/* roulang page: index */
:root {
            --bg-deep: #070C1A;
            --bg-panel: #0B1226;
            --primary: #16D8F5;
            --blue2: #3086FF;
            --blue-glow: rgba(22, 216, 245, 0.25);
            --blue-glow-sm: rgba(22, 216, 245, 0.14);
            --purple: #7A5CFF;
            --amber: #FFC24B;
            --text-main: #EAF2FF;
            --text-muted: #8FA5C8;
            --text-dim: #5F7799;
            --card-bg: rgba(255, 255, 255, 0.06);
            --card-bg-soft: rgba(255, 255, 255, 0.045);
            --card-border: rgba(255, 255, 255, 0.12);
            --divider: rgba(255, 255, 255, 0.08);
            --radius-xl: 22px;
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 10px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.38);
            --shadow-float: 0 14px 40px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(255, 255, 255, 0.06) inset;
            --shadow-glow: 0 0 24px rgba(22, 216, 245, 0.25);
            --gradient-brand: linear-gradient(135deg, #3086FF 0%, #16D8F5 100%);
            --gradient-purple: linear-gradient(135deg, #7A5CFF, #3086FF);
            --section-space: clamp(64px, 8vw, 96px);
        }

        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            background: linear-gradient(165deg, #070C1A 0%, #0B1226 45%, #081020 100%);
            color: var(--text-main);
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;
            line-height: 1.75;
            overflow-x: hidden;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
        }
        h1 {
            letter-spacing: -0.5px;
        }
        p {
            color: var(--text-main);
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.25s ease;
        }
        a:hover {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            border-radius: 16px;
        }
        main {
            overflow: hidden;
        }
        .container {
            max-width: 1200px;
        }

        .btn {
            border-radius: var(--radius-md);
            font-weight: 600;
            padding: 12px 26px;
            border: none;
            transition: all 0.25s ease;
        }
        .btn:focus,
        .btn:focus-visible {
            outline: 2px solid var(--blue2);
            outline-offset: 3px;
            box-shadow: none;
        }
        .btn-primary-custom {
            background: var(--gradient-brand);
            color: #fff !important;
            box-shadow: var(--shadow-glow);
            border-radius: var(--radius-pill);
            padding: 13px 34px;
            letter-spacing: 0.02em;
        }
        .btn-primary-custom:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 30px rgba(22, 216, 245, 0.45);
            color: #fff;
        }
        .btn-primary-custom:active {
            transform: translateY(1px);
            box-shadow: 0 2px 12px rgba(22, 216, 245, 0.28);
        }
        .btn-glass {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text-main) !important;
            border: 1px solid rgba(255, 255, 255, 0.16) !important;
            border-radius: var(--radius-pill);
            padding: 13px 30px;
            backdrop-filter: blur(8px);
        }
        .btn-glass:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(22, 216, 245, 0.5);
            transform: translateY(-2px);
        }

        .section-title-en {
            font-size: 13px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.2em;
            color: var(--primary);
            margin-bottom: 8px;
            display: inline-block;
        }
        .section-title-bar {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 14px;
        }
        .section-title-bar .line {
            width: 42px;
            height: 3px;
            border-radius: 3px;
            background: var(--gradient-brand);
            box-shadow: 0 0 8px rgba(22, 216, 245, 0.55);
        }
        .section-title {
            font-size: clamp(24px, 3vw, 38px);
            font-weight: 800;
            line-height: 1.35;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 720px;
        }
        .text-primary-light {
            color: var(--primary);
        }

        /* ------- Navbar ------- */
        .navbar-area {
            position: sticky;
            top: 0;
            z-index: 1070;
            transition: all 0.3s ease;
            background: linear-gradient(180deg, rgba(7, 12, 26, 0.88), rgba(7, 12, 26, 0.55));
            backdrop-filter: blur(20px);
        }
        .navbar-area.scrolled {
            background: rgba(9, 14, 31, 0.78);
            backdrop-filter: blur(18px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.35);
            border-bottom: 1px solid rgba(22, 216, 245, 0.2);
        }
        .navbar-area .navbar {
            padding-top: 14px;
            padding-bottom: 14px;
        }
        .navbar-brand-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--blue2), var(--primary));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(22, 216, 245, 0.35);
            flex-shrink: 0;
        }
        .brand-icon i {
            font-size: 20px;
            color: #fff;
        }
        .brand-name {
            font-size: 21px;
            font-weight: 800;
            white-space: nowrap;
        }
        .brand-name .cyan {
            background: linear-gradient(120deg, #fff 10%, #16D8F5);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .navbar-area .nav-link {
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0 !important;
            margin: 0 14px;
            position: relative;
            transition: all 0.2s;
        }
        .navbar-area .nav-link:hover {
            color: var(--primary);
        }
        .navbar-area .nav-link.active {
            color: #fff;
        }
        .navbar-area .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            border-radius: 4px;
            background: var(--gradient-brand);
            box-shadow: 0 0 8px rgba(22, 216, 245, 0.7);
        }
        .nav-vip-btn {
            background: var(--gradient-brand);
            color: #fff !important;
            padding: 9px 22px !important;
            border-radius: var(--radius-pill);
            font-weight: 600;
            box-shadow: 0 0 15px rgba(22, 216, 245, 0.28);
            font-size: 14px;
            transition: all 0.25s;
        }
        .nav-vip-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 4px 24px var(--blue-glow);
            color: #fff;
        }
        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 10px;
        }
        .navbar-toggler:focus {
            box-shadow: none;
            border-color: var(--primary);
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='30' height='30' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(234,242,255,0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(7, 12, 26, 0.98);
                border: 1px solid var(--divider);
                border-radius: 16px;
                padding: 20px;
                margin-top: 10px;
            }
            .navbar-area .nav-link {
                padding: 12px 14px !important;
                border-radius: 10px;
                font-size: 16px;
                margin: 3px 0;
            }
            .navbar-area .nav-link:hover,
            .navbar-area .nav-link.active {
                background: rgba(22, 216, 245, 0.06);
                border-left: 4px solid var(--primary);
                color: var(--primary);
            }
            .nav-vip-btn {
                display: inline-block;
                margin-top: 10px;
                padding: 11px 24px !important;
            }
        }

        /* ------- Hero ------- */
        .hero-section {
            position: relative;
            padding: clamp(80px, 10vw, 140px) 0 90px;
            background-image:
                radial-gradient(ellipse at 10% 15%, rgba(22, 216, 245, 0.14), transparent 55%),
                radial-gradient(ellipse at 92% 75%, rgba(122, 92, 255, 0.18), transparent 50%),
                linear-gradient(rgba(7, 12, 26, 0.88), rgba(7, 12, 26, 0.92)),
                url("/assets/images/backpic/back-1.webp");
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 640px;
        }
        .hero-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background-image:
                linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
            background-size: 44px 44px;
            pointer-events: none;
        }
        .hero-section::after {
            content: "";
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 130px;
            background: linear-gradient(to bottom, transparent, rgba(7, 12, 26, 0.95));
            pointer-events: none;
        }
        .hero-section .inner {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(22, 216, 245, 0.35);
            border-radius: var(--radius-pill);
            padding: 7px 18px;
            font-size: 14px;
            color: var(--primary);
            backdrop-filter: blur(12px);
            margin-bottom: 26px;
        }
        .hero-badge i {
            color: var(--amber);
        }
        .hero-title {
            font-size: clamp(30px, 4.4vw, 48px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }
        .text-grad-cyan {
            background: linear-gradient(120deg, #3086FF, #16D8F5);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-sub {
            color: #B9CCE8;
            font-size: 17px;
            line-height: 1.9;
            margin-bottom: 30px;
            max-width: 570px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            margin-bottom: 40px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 34px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 26px;
        }
        .hero-stat .num {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
        }
        .hero-stat .num i {
            color: var(--primary);
            font-size: 20px;
            margin-right: 4px;
        }
        .hero-stat .lbl {
            font-size: 13px;
            color: var(--text-muted);
        }
        .hero-visual-wrap {
            position: relative;
            z-index: 2;
        }
        .hero-card {
            background: rgba(255, 255, 255, 0.09);
            backdrop-filter: blur(24px);
            border: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 22px;
            padding: 18px;
            box-shadow: 0 20px 55px rgba(0, 0, 0, 0.55);
            position: relative;
            transform: perspective(900px) rotateY(-4deg) rotateX(2deg);
        }
        .hero-card img {
            width: 100%;
            border-radius: 14px;
            display: block;
            aspect-ratio: 1.25 / 1;
            object-fit: cover;
        }
        .hero-card-float {
            position: absolute;
            left: -24px;
            bottom: 24px;
            background: rgba(8, 14, 30, 0.72);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(22, 216, 245, 0.4);
            border-radius: 14px;
            padding: 12px 18px;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.35);
            animation: floatY 4s ease-in-out infinite;
        }
        .hero-card-float .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #2AF5B0;
            box-shadow: 0 0 10px #2AF5B0;
        }
        .hero-card-float small {
            color: var(--text-muted);
            display: block;
            font-size: 12px;
        }
        .hero-card-float b {
            font-size: 14px;
        }
        .hero-card-float2 {
            position: absolute;
            right: -16px;
            top: 24px;
            background: rgba(8, 14, 30, 0.7);
            border: 1px solid rgba(255, 194, 75, 0.4);
            backdrop-filter: blur(16px);
            border-radius: 999px;
            padding: 8px 16px;
            font-size: 12px;
            color: var(--amber);
            display: flex;
            align-items: center;
            gap: 6px;
            animation: floatY 5.4s ease-in-out infinite reverse;
        }
        @keyframes floatY {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }
        @media (max-width: 991px) {
            .hero-section {
                padding: 70px 0 70px;
            }
            .hero-visual-wrap {
                margin-top: 54px;
            }
            .hero-card {
                transform: none;
            }
            .hero-card-float {
                left: 12px;
            }
            .hero-card-float2 {
                right: 8px;
            }
        }
        @media (max-width: 575px) {
            .hero-card-float {
                display: none;
            }
            .hero-card-float2 {
                top: 14px;
            }
            .hero-stats {
                gap: 18px;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }

        /* ------- Generic Section ------- */
        .section-pad {
            padding: var(--section-space) 0;
        }
        .section-alt {
            background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), rgba(255, 255, 255, 0.02));
            border-top: 1px solid var(--divider);
            border-bottom: 1px solid var(--divider);
        }
        .glass-card {
            background: var(--card-bg);
            backdrop-filter: blur(16px);
            border: 1px solid var(--card-border);
            border-top: 1px solid rgba(255, 255, 255, 0.18);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

        /* ------- Compare / Tier cards ------- */
        .tier-wrap {
            margin-top: 46px;
        }
        .tier-card {
            background: rgba(255, 255, 255, 0.045);
            backdrop-filter: blur(15px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-top: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 22px;
            padding: 36px 28px 30px;
            height: 100%;
            position: relative;
            transition: all 0.3s ease;
        }
        .tier-card:hover {
            transform: translateY(-8px);
            border-color: rgba(22, 216, 245, 0.35);
            box-shadow: var(--shadow-card), 0 0 30px rgba(22, 216, 245, 0.1);
        }
        .tier-featured {
            background: linear-gradient(160deg, rgba(22, 216, 245, 0.13), rgba(48, 134, 255, 0.05));
            border: 1px solid rgba(22, 216, 245, 0.38);
            border-top: 1px solid rgba(22, 216, 245, 0.42);
            transform: scale(1.02);
            box-shadow: 0 16px 45px rgba(0, 0, 0, 0.4), 0 0 35px rgba(22, 216, 245, 0.12);
            z-index: 2;
        }
        .tier-featured:hover {
            transform: scale(1.02) translateY(-8px);
        }
        .tier-tag {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: linear-gradient(120deg, var(--purple), var(--blue2));
            color: #fff;
            border-radius: 999px;
            font-size: 13px;
            padding: 6px 18px;
            font-weight: 600;
            white-space: nowrap;
            box-shadow: 0 4px 20px rgba(122, 92, 255, 0.3);
        }
        .tier-role {
            font-size: 13px;
            color: var(--primary);
            text-transform: uppercase;
            letter-spacing: 0.12em;
            margin-bottom: 6px;
        }
        .tier-title {
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 8px;
            color: #fff;
        }
        .tier-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 20px;
            min-height: 42px;
        }
        .tier-price {
            display: flex;
            align-items: baseline;
            gap: 8px;
            margin-bottom: 20px;
        }
        .tier-price strong {
            font-size: 28px;
            color: #fff;
        }
        .tier-price span {
            color: var(--text-muted);
            font-size: 13px;
        }
        .tier-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .tier-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 7px 0;
            color: #CFDDF2;
            font-size: 14px;
        }
        .tier-list li i {
            color: var(--primary);
            font-size: 13px;
            margin-top: 5px;
        }
        .tier-list li.muted {
            color: #6B86A8;
        }
        .tier-list li.muted i {
            color: #597497;
        }
        .tier-btn {
            margin-top: 26px;
        }
        .tier-featured .tier-list li i {
            color: var(--amber);
        }
        .tier-btn-mobile {
            width: 100%;
        }
        @media (max-width: 991.98px) {
            .tier-card,
            .tier-featured {
                transform: none;
            }
            .tier-featured {
                margin-top: 8px;
            }
            .tier-card {
                margin-bottom: 8px;
            }
        }
        @media (max-width: 575px) {
            .tier-card {
                padding: 28px 22px;
            }
            .tier-list li {
                font-size: 13px;
            }
        }

        /* ------- Levels ------- */
        .levels-section {
            position: relative;
        }
        .levels-path {
            display: none;
        }
        .level-track {
            position: relative;
            margin-top: 42px;
        }
        .level-track::before {
            content: "";
            position: absolute;
            height: 3px;
            background: linear-gradient(90deg, rgba(48, 134, 255, 0.4), rgba(22, 216, 245, 0.6), rgba(255, 194, 75, 0.4));
            border-radius: 4px;
            top: 30px;
            left: 5%;
            right: 5%;
            display: none;
        }
        .level-item {
            position: relative;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-top: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 20px;
            padding: 26px 24px;
            height: 100%;
            transition: all 0.28s;
        }
        .level-item:hover {
            background: rgba(255, 255, 255, 0.06);
            transform: translateY(-6px);
            border-color: rgba(22, 216, 245, 0.4);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25), 0 0 18px rgba(22, 216, 245, 0.1);
        }
        .level-num {
            font-size: 13px;
            color: var(--primary);
            letter-spacing: 0.1em;
            font-weight: 600;
            display: block;
            margin-bottom: 8px;
        }
        .level-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .level-desc {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .level-features {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .level-features li {
            font-size: 13px;
            color: #B9C9E4;
            padding: 3px 0;
            padding-left: 18px;
            position: relative;
        }
        .level-features li::before {
            content: "▸";
            position: absolute;
            left: 0;
            color: var(--primary);
        }
        .level-reco {
            border: 1px solid rgba(255, 194, 75, 0.5);
            background: linear-gradient(160deg, rgba(255, 194, 75, 0.1), rgba(255, 255, 255, 0.03));
            box-shadow: 0 0 25px rgba(255, 194, 75, 0.15);
        }
        .level-reco .level-num {
            color: var(--amber);
        }
        .level-reco-badge {
            position: absolute;
            top: -11px;
            right: 18px;
            background: linear-gradient(120deg, #FFC24B, #FFAA33);
            color: #111827;
            font-size: 12px;
            font-weight: 700;
            border-radius: 999px;
            padding: 3px 13px;
            box-shadow: 0 4px 14px rgba(255, 194, 75, 0.35);
        }
        @media (min-width: 992px) {
            .level-track::before {
                display: block;
            }
        }
        @media (max-width: 991.98px) {
            .level-item {
                margin-bottom: 0;
            }
        }


        /* ------- Category Quick Entry ------- */
        .cat-entry-card {
            border-radius: 20px;
            padding: 32px 26px;
            height: 100%;
            display: flex;
            flex-direction: column;
            text-align: center;
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            transition: all .3s;
        }
        .cat-entry-card:hover {
            transform: translateY(-8px);
            border-color: rgba(22, 216, 245, 0.35);
            box-shadow: 0 14px 34px rgba(0, 0, 0, 0.35), 0 0 30px rgba(22, 216, 245, 0.12);
        }
        .cat-icon {
            width: 54px;
            height: 54px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 22px;
            background: rgba(22, 216, 245, 0.12);
            color: var(--primary);
            border: 1px solid rgba(22, 216, 245, 0.35);
        }
        .cat-entry-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .cat-entry-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .cat-link-more {
            margin-top: auto;
            padding-top: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            font-size: 14px;
            color: var(--primary);
        }
        .cat-link-more i {
            transition: transform .25s;
        }
        .cat-entry-card:hover .cat-link-more i {
            transform: translateX(4px);
        }

        /* ------- Featured Preview 2+1 ------- */
        .preview-section {
            position: relative;
        }
        .media-card {
            position: relative;
            border-radius: 22px;
            overflow: hidden;
            border: 1px solid var(--card-border);
            box-shadow: var(--shadow-card);
            height: 100%;
            min-height: 340px;
            display: flex;
            align-items: flex-end;
            background-size: cover;
            background-position: center;
            padding: 26px;
            transition: all .3s;
        }
        .media-card::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(7, 12, 26, 0.9), rgba(7, 12, 26, 0.1));
        }
        .media-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card), 0 8px 32px rgba(22, 216, 245, 0.14);
        }
        .media-info {
            position: relative;
            z-index: 2;
        }
        .vip-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(10, 15, 30, 0.6);
            border: 1px solid rgba(22, 216, 245, 0.45);
            color: var(--primary);
            backdrop-filter: blur(12px);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 12px;
            margin-bottom: 12px;
        }
        .vip-tag i {
            font-size: 11px;
            color: var(--amber);
        }
        .media-card .title {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .media-card .summary {
            font-size: 14px;
            color: #C1CEE6;
            max-width: 560px;
        }
        .media-wide {
            min-height: 250px;
            padding: 42px;
        }
        .media-wide .inner-wide {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 26px;
            position: relative;
            z-index: 2;
            flex-wrap: wrap;
        }
        .play-btn {
            width: 58px;
            height: 58px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--gradient-brand);
            color: #fff;
            font-size: 20px;
            box-shadow: 0 0 30px rgba(22, 216, 245, 0.55);
            flex-shrink: 0;
            transition: all .3s;
        }
        .play-btn:hover {
            color: #fff;
            transform: scale(1.08);
        }
        @media (max-width: 767px) {
            .media-card {
                min-height: 300px;
            }
            .media-wide {
                padding: 28px 22px;
            }
            .media-wide .inner-wide {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        /* ------- FAQ ------- */
        .faq-wrap {
            margin-top: 30px;
        }
        .faq-sider {
            position: sticky;
            top: 130px;
            align-self: flex-start;
        }
        .faq-headline {
            font-size: 34px;
            font-weight: 800;
        }
        .faq-contact-note {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: 18px;
            padding: 22px;
        }
        .faq-accordion .accordion-item {
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 18px !important;
            margin-bottom: 14px;
            overflow: hidden;
            transition: all .2s;
        }
        .faq-accordion .accordion-button {
            background: transparent;
            color: #EAF2FF;
            font-weight: 600;
            font-size: 16px;
            padding: 22px 24px;
        }
        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(22, 216, 245, 0.07);
            color: #fff;
            box-shadow: none;
        }
        .faq-accordion .accordion-button:focus {
            box-shadow: none;
        }
        .faq-accordion .accordion-button::after {
            filter: brightness(10);
        }
        .faq-accordion .accordion-body {
            padding: 0 24px 24px;
            color: var(--text-muted);
            line-height: 1.8;
            font-size: 15px;
        }
        .faq-qnum {
            color: var(--primary);
            font-weight: 700;
            margin-right: 8px;
        }
        @media (max-width: 991px) {
            .faq-sider {
                position: static;
            }
        }

        /* ------- Big CTA ------- */
        .cta-banner {
            position: relative;
            border-radius: 28px;
            background-image:
                linear-gradient(110deg, rgba(7, 12, 26, 0.88), rgba(7, 12, 26, 0.62)),
                url("/assets/images/backpic/back-3.webp");
            background-size: cover;
            background-position: center;
            border: 1px solid rgba(255, 255, 255, 0.14);
            padding: clamp(40px, 6vw, 80px);
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(22, 216, 245, 0.06);
            filter: blur(100px);
            bottom: -220px;
            right: -80px;
        }
        .cta-banner .cta-title {
            font-size: clamp(24px, 3vw, 40px);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 10px;
        }
        .cta-banner .cta-sub {
            color: #C6DAF2;
            font-size: 17px;
            max-width: 640px;
            margin-bottom: 26px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 575px) {
            .cta-banner {
                border-radius: 18px;
            }
            .cta-actions .btn {
                width: 100%;
                text-align: center;
            }
        }

        /* ------- News CMS ------- */
        .news-section {
            border-top: 1px solid var(--divider);
        }
        .news-grid {
            margin-top: 38px;
        }
        .news-card-view {
            background: rgba(255, 255, 255, 0.045);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-top: 1px solid rgba(255, 255, 255, 0.16);
            border-radius: 18px;
            padding: 24px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: all .3s;
        }
        .news-card-view:hover {
            background: rgba(255, 255, 255, 0.075);
            transform: translateY(-8px);
            box-shadow: var(--shadow-card), 0 8px 24px rgba(22, 216, 245, 0.08);
            border-color: rgba(22, 216, 245, 0.3);
        }
        .news-card-view .meta-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .news-card-view .badge-cat {
            background: rgba(22, 216, 245, 0.12);
            color: var(--primary);
            border: 1px solid rgba(22, 216, 245, 0.25);
            border-radius: 999px;
            font-size: 12px;
            padding: 3px 10px;
            display: inline-block;
        }
        .news-card-view .date {
            font-size: 12px;
            color: var(--text-dim);
        }
        .news-card-view h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card-view p {
            font-size: 14px;
            color: var(--text-muted);
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 16px;
            flex-grow: 1;
        }
        .news-link-go {
            margin-top: auto;
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }
        .news-link-go i {
            color: var(--primary);
            transition: transform .25s;
        }
        .news-card-view:hover .news-link-go i {
            transform: translateX(5px);
        }
        .news-empty {
            background: rgba(255, 255, 255, 0.025);
            border: 1px dashed rgba(255, 255, 255, 0.2);
            border-radius: 20px;
            min-height: 320px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 16px;
            text-align: center;
            padding: 30px;
            grid-column: 1 / -1;
        }
        .news-empty i {
            font-size: 40px;
            margin-bottom: 14px;
            color: var(--text-dim);
        }

        /* ------- Footer ------- */
        .site-footer {
            background: #050812;
            border-top: 1px solid rgba(22, 216, 245, 0.2);
            margin-top: 0;
            padding: 70px 0 28px;
            position: relative;
        }
        .site-footer::before {
            content: "";
            position: absolute;
            top: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, rgba(22, 216, 245, 0.3), transparent);
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
        }
        .footer-brand .icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: var(--gradient-brand);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
        }
        .footer-brand .name {
            font-size: 18px;
            font-weight: 800;
        }
        .footer-desc {
            color: #7D94B8;
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 0;
            max-width: 260px;
        }
        .footer-subtitle {
            font-size: 15px;
            color: var(--text-main);
            font-weight: 700;
            margin-bottom: 16px;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            flex-direction: column;
            gap: 10px;
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links a {
            color: #8FA3C4;
            font-size: 14px;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .copyright-row {
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            margin-top: 48px;
            padding-top: 24px;
            color: #5E7795;
            font-size: 13px;
        }
        .copyright-row a {
            color: #7FA4BA;
        }
        @media (max-width: 767px) {
            .site-footer {
                padding-top: 50px;
            }
            .copyright-row {
                text-align: center;
            }
            .footer-links {
                flex-direction: row;
                flex-wrap: wrap;
                gap: 10px 18px;
            }
            .footer-subtitle {
                margin-top: 22px;
            }
        }

        .section-cta-divider {
            height: 1px;
            margin: 0;
            border: none;
            background: linear-gradient(90deg, transparent, rgba(22, 216, 245, 0.2), transparent);
        }

/* roulang page: category1 */
:root {
            --bg-deep-1: #070C1A;
            --bg-deep-2: #0B1226;
            --bg-footer: #050812;
            --accent-cyan: #16D8F5;
            --accent-blue: #3086FF;
            --accent-purple: #7A5CFF;
            --accent-gold: #FFC24B;
            --glass-bg: rgba(255, 255, 255, 0.06);
            --glass-hover-bg: rgba(255, 255, 255, 0.12);
            --text-main: #EAF2FF;
            --text-sub: #8FA5C8;
            --text-muted: #7D94B8;
            --border-w: rgba(255, 255, 255, 0.08);
            --border-h: rgba(255, 255, 255, 0.22);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-pill: 999px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
            --shadow-glow: 0 0 24px rgba(22, 216, 245, 0.25);
            --shadow-glow-blue: 0 0 30px rgba(48, 134, 255, 0.22);
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --space-section: 96px;
            --space-section-m: 64px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font-main);
            background: var(--bg-deep-1);
            color: var(--text-main);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: 0.01em;
        }

        p {
            color: var(--text-sub);
            line-height: 1.8;
        }

        a {
            text-decoration: none;
            transition: color .2s ease;
        }

        img {
            max-width: 100%;
        }

        .container {
            max-width: 1200px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding-top: var(--space-section-m);
            padding-bottom: var(--space-section-m);
        }

        @media (min-width: 992px) {
            .section {
                padding-top: var(--space-section);
                padding-bottom: var(--space-section);
            }
        }

        .text-cyan {
            color: var(--accent-cyan);
        }

        .bg-grid {
            background-image: linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 70px 70px;
        }

        .radial-glow {
            background:
                radial-gradient(ellipse 480px 260px at 10% 10%, rgba(22, 216, 245, 0.05), transparent 60%),
                radial-gradient(ellipse 600px 340px at 85% 90%, rgba(122, 92, 255, 0.05), transparent 70%);
        }

        .glass-card {
            background: var(--glass-bg);
            border: 1px solid var(--border-w);
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
        }

        .btn-glow {
            transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, color .2s ease;
            font-weight: 600;
            border: 0;
            border-radius: var(--radius-pill);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-primary-grad {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            box-shadow: 0 6px 22px rgba(22, 216, 245, 0.3);
            padding: 13px 32px;
        }

        .btn-primary-grad:hover {
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 10px 34px rgba(22, 216, 245, 0.45);
        }

        .btn-primary-grad:focus-visible {
            outline: 2px solid var(--accent-blue);
            outline-offset: 3px;
        }

        .btn-secondary-grad {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-main);
            padding: 12px 26px;
            border-radius: var(--radius-pill);
        }

        .btn-secondary-grad:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.12);
            border-color: rgba(22, 216, 245, 0.5);
        }

        .header-marker {
            font-size: 13px;
            font-weight: 400;
            letter-spacing: 0.28em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .header-marker::before {
            content: "";
            width: 32px;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            border-radius: 2px;
        }

        .section-title {
            font-size: clamp(24px, 2.6vw, 36px);
            font-weight: 800;
            line-height: 1.3;
        }

        /* ===== Header Nav ===== */
        .site-nav-wrap {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(7, 12, 26, 0.82);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(22, 216, 245, 0.15);
            padding: 0;
        }

        .navbar-brand-wrap {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.02em;
            padding: 14px 0;
        }

        .navbar-brand-wrap .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(48, 134, 255, 0.85), rgba(22, 216, 245, 0.9));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #fff;
            box-shadow: 0 0 14px rgba(22, 216, 245, 0.35);
        }

        .navbar-brand-wrap .brand-name {
            color: #fff;
            line-height: 1.3;
        }

        .navbar-brand-wrap .cyan {
            background: linear-gradient(90deg, var(--accent-cyan), #9BE8FF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .site-nav-wrap .navbar-nav .nav-link {
            color: rgba(234, 242, 255, 0.78);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0;
            margin: 0 13px;
            position: relative;
            border-bottom: 2px solid transparent;
            transition: color .2s ease;
        }

        .site-nav-wrap .navbar-nav .nav-link:hover {
            color: var(--accent-cyan);
        }

        .site-nav-wrap .navbar-nav .nav-link.active {
            color: #fff;
            font-weight: 600;
            border-bottom-color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(22, 216, 245, 0.3);
        }

        .site-nav-wrap .nav-vip-btn {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff !important;
            border-radius: var(--radius-pill);
            padding: 8px 22px !important;
            border: none;
            font-weight: 600;
            box-shadow: 0 4px 16px rgba(22, 216, 245, 0.28);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin: 0 0 0 8px;
            transition: transform .2s ease, box-shadow .2s ease;
        }

        .site-nav-wrap .nav-vip-btn:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 24px rgba(22, 216, 245, 0.45);
            color: #fff;
        }

        .site-nav-wrap .navbar-toggler {
            border: none;
            padding: 4px;
            box-shadow: none;
        }

        .site-nav-wrap .navbar-toggler .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(234,242,255,0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        @media (max-width: 991.98px) {
            .site-nav-wrap .navbar-collapse {
                background: rgba(9, 14, 31, 0.97);
                border-radius: 18px;
                padding: 12px 16px;
                margin-top: 8px;
                border: 1px solid rgba(255, 255, 255, 0.08);
            }

            .site-nav-wrap .navbar-nav .nav-link {
                padding: 12px 8px;
                margin: 2px 0;
                border-bottom: none;
                border-left: 3px solid transparent;
                border-radius: 0 8px 8px 0;
                font-size: 15px;
            }

            .site-nav-wrap .navbar-nav .nav-link.active {
                border-left-color: var(--accent-cyan);
                background: rgba(22, 216, 245, 0.06);
            }

            .site-nav-wrap .nav-vip-btn {
                margin: 10px 0 4px;
                width: 100%;
                justify-content: center;
                border-radius: var(--radius-pill);
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding-top: 34px;
            margin-bottom: 18px;
        }

        .breadcrumb-custom {
            font-size: 13px;
            color: var(--text-sub);
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: wrap;
        }

        .breadcrumb-custom a {
            color: #8FA5C8;
        }

        .breadcrumb-custom a:hover {
            color: var(--accent-cyan);
        }

        .breadcrumb-custom .sep {
            color: rgba(255, 255, 255, 0.25);
        }

        .breadcrumb-custom .current {
            color: var(--text-main);
            font-weight: 600;
        }

        /* ===== Topic Hero ===== */
        .topic-hero {
            position: relative;
            background: linear-gradient(160deg, #0B1226 0%, #070C1A 60%, #0E162E 100%);
            overflow: hidden;
            padding-top: 48px;
            padding-bottom: 56px;
        }

        .topic-hero .bg-grid {
            position: absolute;
            inset: 0;
            pointer-events: none;
            opacity: 0.5;
        }

        .topic-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                radial-gradient(ellipse 400px 180px at 15% 20%, rgba(22, 216, 245, 0.08), transparent 60%),
                radial-gradient(ellipse 500px 300px at 85% 90%, rgba(122, 92, 255, 0.05), transparent 70%);
            pointer-events: none;
        }

        .topic-hero .container {
            position: relative;
            z-index: 2;
        }

        .topic-hero * {
            position: relative;
            z-index: 1;
        }

        .topic-hero h1 {
            font-size: clamp(24px, 2.6vw, 36px);
            font-weight: 800;
            line-height: 1.4;
            max-width: 760px;
        }

        .topic-hero h1 .hl {
            background: linear-gradient(90deg, var(--accent-cyan), #9BE8FF);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .topic-desc {
            max-width: 780px;
            font-size: 16px;
            line-height: 1.8;
            color: #B6C8E4;
            margin-top: 18px;
        }

        /* ===== Watermark ===== */
        .topic-watermark {
            position: absolute;
            right: -20px;
            bottom: -40px;
            font-size: clamp(64px, 8vw, 128px);
            font-weight: 800;
            color: rgba(255, 255, 255, 0.03);
            pointer-events: none;
            line-height: 1;
            white-space: nowrap;
            z-index: 0;
        }

        /* ===== Live Overview / Feature Cards ===== */
        .feature-item {
            box-shadow: var(--shadow-card);
            transition: transform .2s ease, border-color .2s ease, background .2s ease;
            height: 100%;
            border-radius: var(--radius-lg);
        }

        .feature-item:hover {
            transform: translateY(-4px);
            border-color: rgba(22, 216, 245, 0.25);
        }

        .feature-item .feature-icon {
            width: 42px;
            height: 42px;
            border-radius: 14px;
            background: rgba(22, 216, 245, 0.1);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent-cyan);
            margin-bottom: 14px;
        }

        .feature-item .feature-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-item .feature-text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.7;
        }

        /* ===== Match / Big Card ===== */
        .big-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            height: 100%;
        }

        .big-card-img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .big-card-content {
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .big-card-content .tag-badge {
            align-self: flex-start;
        }

        .big-card-content h3 {
            font-size: 22px;
            font-weight: 800;
        }

        .big-card-content p {
            font-size: 15px;
            line-height: 1.75;
        }

        /* ===== Sub List ===== */
        .sub-item-card {
            border-radius: var(--radius-lg);
            padding: 18px 22px;
            display: flex;
            align-items: center;
            gap: 14px;
            border: 1px solid var(--border-w);
            background: rgba(255, 255, 255, 0.025);
        }

        .sub-item-num {
            font-size: 24px;
            font-weight: 800;
            font-family: "DIN Alternate", "Bahnschrift", sans-serif;
            color: rgba(255, 255, 255, 0.4);
            width: 46px;
            text-align: center;
            flex-shrink: 0;
        }

        .sub-item-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }

        .sub-item-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ===== Side Card ===== */
        .side-card {
            border-radius: var(--radius-lg);
            padding: 26px 24px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            background: rgba(255, 255, 255, 0.025);
        }

        .side-card + .side-card {
            margin-top: 24px;
        }

        .side-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .side-title i {
            color: var(--accent-cyan);
            font-size: 15px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud .tag-item {
            padding: 6px 12px;
            border-radius: var(--radius-pill);
            background: rgba(255, 255, 255, 0.05);
            color: var(--text-sub);
            font-size: 13px;
            border: 1px solid rgba(255, 255, 255, 0.05);
            transition: color .2s, background .2s, border-color .2s;
        }

        .tag-cloud .tag-item:hover {
            color: var(--accent-cyan);
            border-color: rgba(22, 216, 245, 0.4);
        }

        .tag-cloud .tag-hot {
            color: var(--accent-cyan);
            border-color: rgba(22, 216, 245, 0.35);
            background: rgba(22, 216, 245, 0.06);
            font-weight: 700;
            font-size: 15px;
        }

        /* ===== Trending List ===== */
        .hot-list .hot-item {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            padding: 11px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .hot-list .hot-item:last-child {
            border-bottom: none;
        }

        .hot-index {
            font-weight: 800;
            font-size: 16px;
            color: rgba(255, 255, 255, 0.35);
            font-family: "DIN Alternate", "Bahnschrift", sans-serif;
            min-width: 28px;
            text-shadow: none;
        }

        .hot-text {
            font-size: 14px;
            color: var(--text-main);
            font-weight: 500;
            line-height: 1.5;
        }

        .hot-meta {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 5px;
        }

        /* ===== Static placeholder cards ===== */
        .static-card {
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            border: 2px dashed rgba(255, 255, 255, 0.1);
            background: rgba(255, 255, 255, 0.02);
        }

        .static-card .icon {
            font-size: 38px;
            color: rgba(255, 255, 255, 0.4);
            display: block;
            margin-bottom: 12px;
        }

        .static-card .text {
            font-size: 14px;
            color: var(--text-sub);
            line-height: 1.8;
        }

        /* ===== Steps / Access ===== */
        .flow-step {
            text-align: center;
            padding: 22px 30px;
        }

        .flow-step .step-num {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 17px;
            margin-bottom: 14px;
            box-shadow: 0 0 16px rgba(22, 216, 245, 0.2);
        }

        .flow-step h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .flow-step p {
            font-size: 14px;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-item {
            border-radius: var(--radius-md);
            border-left: 2px solid transparent;
            background: rgba(255, 255, 255, 0.02);
            margin-bottom: 14px;
            overflow: hidden;
            transition: background .2s, border .2s;
        }

        .faq-item .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-weight: 600;
            font-size: 15px;
            padding: 16px 18px;
            box-shadow: none;
            border-bottom: 1px solid transparent;
        }

        .faq-item .accordion-button:not(.collapsed) {
            background: rgba(22, 216, 245, 0.04);
            border-left-color: var(--accent-cyan);
        }

        .faq-item .accordion-button::after {
            filter: invert(0.75);
        }

        .faq-item .accordion-body {
            padding: 0 18px 16px;
            color: var(--text-sub);
            font-size: 14px;
            background: transparent;
        }

        .faq-item {
            border-left: 3px solid transparent;
            background: rgba(255, 255, 255, 0.025);
        }

        .faq-item:has(.accordion-button:not(.collapsed)) {
            border-left-color: var(--accent-cyan);
        }

        /* ===== CTA Banner ===== */
        .cta-banner {
            background: linear-gradient(135deg, rgba(206, 53, 78, 0.05), rgba(22, 216, 245, 0.1) 40%, rgba(122, 92, 255, 0.08) 80%);
            border: 1px solid rgba(22, 216, 245, 0.2);
            border-radius: 26px;
            overflow: hidden;
            position: relative;
            color: #fff;
            padding: 56px 30px;
            text-align: center;
        }

        .cta-banner::before {
            content: "";
            background: url('/assets/images/backpic/back-2.webp') center/cover no-repeat fixed;
            opacity: 0.2;
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            pointer-events: none;
        }

        .cta-banner .container {
            position: relative;
            z-index: 2;
        }

        .cta-banner h2 {
            font-size: clamp(24px, 3vw, 32px);
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-banner a.btn-glow {
            margin-top: 10px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background-color: #050812;
            border-top: 1px solid rgba(22, 216, 245, 0.18);
            padding: 56px 0 28px;
            position: relative;
        }

        .site-footer .footer-brand {
            display: inline-flex;
            gap: 10px;
            align-items: center;
            font-size: 19px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .site-footer .footer-brand .icon {
            width: 30px;
            height: 30px;
            border-radius: 10px;
            background: linear-gradient(135deg, #3086FF, #16D8F5);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 13px;
        }

        .site-footer .footer-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 360px;
        }

        .footer-subtitle {
            color: var(--text-main);
            font-weight: 700;
            font-size: 15px;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .site-footer .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer .footer-links li {
            margin-bottom: 10px;
        }

        .site-footer .footer-links a {
            color: #7D94B8;
            font-size: 14px;
            line-height: 1.6;
            transition: color .2s;
        }

        .site-footer .footer-links a:hover {
            color: var(--accent-cyan);
        }

        .copyright-row {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            margin-top: 34px;
            padding-top: 20px;
            color: #7D94B8;
            font-size: 13px;
        }

        .copyright-row div {
            margin-top: 4px;
            margin-bottom: 4px;
        }

        @media (max-width: 576px) {
            .copyright-row {
                display: block;
                text-align: center;
            }
            .copyright-row div {
                margin: 6px auto;
            }
        }

        html {
            scrollbar-color: var(--accent-blue) var(--bg-footer);
        }

        ::-webkit-scrollbar {
            width: 10px;
            height: 10px;
        }

        ::-webkit-scrollbar-track {
            background: var(--bg-footer);
        }

        ::-webkit-scrollbar-thumb {
            background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 99px;
        }

        @media (max-width: 767px) {
            .section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .big-card-content {
                padding: 20px;
            }
            .feature-item {
                padding: 20px;
            }
        }

/* roulang page: article */
:root {
    --bg-deep: #070C1A;
    --bg-body: #0B1226;
    --cyan: #16D8F5;
    --blue: #3086FF;
    --purple: #7A5CFF;
    --gold: #FFC24B;
    --text-main: #EAF2FF;
    --text-sub: #8FA5C8;
    --divider: rgba(255, 255, 255, 0.08);
    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-line: rgba(255, 255, 255, 0.12);
    --radius: 20px;
    --radius-sm: 12px;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
    --glow: 0 0 24px rgba(22, 216, 245, 0.25);
    --container: 1200px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    background:
        radial-gradient(1000px 520px at 92% -10%, rgba(22, 216, 245, 0.08), transparent 60%),
        radial-gradient(900px 480px at -10% 85%, rgba(122, 92, 255, 0.07), transparent 55%),
        linear-gradient(180deg, #070C1A 0%, #0B1226 60%, #070C1A 100%);
    color: var(--text-main);
    line-height: 1.8;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

a {
    color: var(--cyan);
    text-decoration: none;
    transition: color .25s ease;
}

img {
    max-width: 100%;
    display: block;
}

button,
input,
select,
textarea {
    font: inherit;
    outline: none;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

.container-narrow {
    width: 100%;
    max-width: 880px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 24px;
    padding-right: 24px;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-left: -12px;
    margin-right: -12px;
}

.row > [class*="col-"] {
    width: 100%;
    padding-left: 12px;
    padding-right: 12px;
}

.g-4 {
    row-gap: 24px;
}

.d-flex {
    display: flex !important;
}

.flex-wrap {
    flex-wrap: wrap !important;
}

.justify-content-between {
    justify-content: space-between !important;
}

.ms-auto {
    margin-left: auto !important;
}

.ms-lg-2 {
    margin-left: 0.5rem !important;
}

.me-1 {
    margin-right: 0.25rem !important;
}

.align-items-center {
    align-items: center;
}

.align-items-lg-center {
    align-items: center;
}

@media (min-width: 768px) {
    .col-md-6 {
        flex: 0 0 50%;
        max-width: 50%;
    }
    .col-md-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

@media (min-width: 992px) {
    .col-lg-2 {
        flex: 0 0 16.6667%;
        max-width: 16.6667%;
    }
    .col-lg-3 {
        flex: 0 0 25%;
        max-width: 25%;
    }
    .col-lg-4 {
        flex: 0 0 33.3333%;
        max-width: 33.3333%;
    }
    .col-lg-5 {
        flex: 0 0 41.6667%;
        max-width: 41.6667%;
    }
}

@media (max-width: 991.98px) {
    .col-md-12 {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* ===== 按钮 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 0;
    border-radius: 999px;
    font-weight: 700;
    font-size: 15px;
    line-height: 1.2;
    padding: 13px 26px;
    cursor: pointer;
    transition: transform .25s ease, box-shadow .25s ease, background .25s ease, border-color .25s ease;
}

.btn:focus-visible {
    outline: 2px solid var(--blue);
    outline-offset: 3px;
}

.btn-primary {
    background: linear-gradient(120deg, #3086FF, #16D8F5);
    color: #fff;
    box-shadow: 0 0 22px rgba(22, 216, 245, 0.28);
}

.btn-primary:hover {
    transform: translateY(-2px);
    color: #fff;
    box-shadow: 0 0 32px rgba(22, 216, 245, 0.42);
}

.btn-outline {
    background: rgba(255, 255, 255, 0.04);
    color: #DCEAFF;
    border: 1px solid var(--glass-line);
    box-shadow: none;
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
    border-color: rgba(22, 216, 245, 0.5);
    transform: translateY(-2px);
}

/* ===== 导航 ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(7, 12, 26, 0.66);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(22, 216, 245, 0.08);
    padding: 14px 0;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    row-gap: 12px;
}

.navbar-brand-wrap {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    letter-spacing: .3px;
    text-decoration: none;
    padding: 4px 0;
}

.brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(48, 134, 255, 0.2), rgba(22, 216, 245, 0.16));
    color: var(--cyan);
    border: 1px solid rgba(22, 216, 245, 0.28);
    box-shadow: var(--glow);
}

.brand-name .cyan {
    background: linear-gradient(115deg, #3086FF, #16D8F5);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

.navbar-toggler {
    display: none;
    background: transparent;
    border: 1px solid var(--divider);
    width: 44px;
    height: 38px;
    border-radius: 10px;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 6px;
}

.navbar-toggler-icon {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    position: relative;
}

.navbar-toggler-icon::before,
.navbar-toggler-icon::after {
    content: "";
    position: absolute;
    left: 0;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: transform .25s ease;
    transform-origin: center;
}

.navbar-toggler-icon::before {
    top: -7px;
}

.navbar-toggler-icon::after {
    top: 7px;
}

.collapse:not(.show) {
    display: none;
}

@media (max-width: 991.98px) {
    .navbar-toggler {
        display: inline-flex;
        margin-left: auto;
    }

    .navbar-collapse {
        flex-basis: 100%;
    }

    .navbar-nav {
        flex-direction: column;
        gap: 0;
        width: 100%;
        padding: 16px 0 8px;
    }

    .nav-item {
        width: 100%;
    }

    .nav-link {
        display: block;
        min-height: 52px;
        padding: 13px 14px;
        border-left: 2px solid transparent;
        color: rgba(234, 242, 255, 0.68);
    }

    .nav-link:hover,
    .nav-link.active {
        color: #fff;
        border-left-color: var(--cyan);
        background: rgba(22, 216, 245, 0.04);
        padding-left: 18px;
    }

    .nav-vip-btn {
        display: flex;
        justify-content: center;
        align-items: center;
        margin: 12px 0 4px;
        padding: 11px 16px;
        border-left: 0;
        border-radius: 999px;
        background: linear-gradient(120deg, #3086FF, #16D8F5);
        color: #fff;
        box-shadow: var(--glow);
    }

    .nav-vip-btn:hover {
        padding-left: 16px;
        color: #fff;
        background: linear-gradient(120deg, #3b8fff, #25e6ff);
    }
}

@media (min-width: 992px) {
    .navbar-nav {
        list-style: none;
        display: flex;
        align-items: center;
        gap: 4px;
        margin: 0;
        padding: 0;
    }

    .navbar-collapse {
        display: flex;
        align-items: center;
        flex: 1;
        margin-left: 40px;
    }

    .nav-link {
        position: relative;
        display: inline-block;
        padding: 10px 14px;
        font-size: 15px;
        font-weight: 500;
        color: rgba(234, 242, 255, 0.7);
        border-radius: 10px;
        line-height: 1.3;
    }

    .nav-link::after {
        content: "";
        position: absolute;
        left: 50%;
        bottom: 2px;
        width: 0;
        height: 2px;
        border-radius: 2px;
        background: linear-gradient(90deg, var(--blue), var(--cyan));
        transform: translateX(-50%);
        transition: width .25s ease;
        opacity: 0;
    }

    .nav-link:hover,
    .nav-link:focus-visible {
        color: #fff;
    }

    .nav-link:hover::after,
    .nav-link:focus-visible::after,
    .nav-link.active::after {
        width: 22px;
        opacity: 1;
    }

    .nav-link.active {
        color: #fff;
    }

    .nav-vip-btn {
        background: linear-gradient(120deg, #3086FF, #16D8F5);
        color: #fff;
        box-shadow: 0 0 18px rgba(22, 216, 245, 0.28);
        padding: 10px 20px;
        margin-left: 6px;
    }

    .nav-vip-btn::after {
        display: none;
    }

    .nav-vip-btn:hover,
    .nav-vip-btn:focus-visible {
        color: #fff;
        transform: translateY(-2px);
        box-shadow: 0 0 28px rgba(22, 216, 245, 0.42);
    }
}

/* ===== 字体图标回退 ===== */
.fa-solid.fa-bolt::before {
    content: "⚡";
    font-family: "PingFang SC", sans-serif;
    font-style: normal;
}

.fa-solid.fa-crown::before {
    content: "♛";
    font-family: "PingFang SC", sans-serif;
    font-style: normal;
}

/* ===== 面包屑 ===== */
.breadcrumb-wrap {
    margin-bottom: 18px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    list-style: none;
    gap: 6px;
    font-size: 13px;
    color: var(--text-sub);
    padding: 0;
    margin: 0;
}

.breadcrumb a {
    color: var(--text-sub);
}

.breadcrumb a:hover {
    color: var(--cyan);
}

.breadcrumb .current {
    color: #fff;
    font-weight: 600;
}

.breadcrumb .sep {
    opacity: .6;
}

/* ===== 样式化工具（非 Bootstrap） ===== */
.page-bg {
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background:
        radial-gradient(680px 260px at 86% -4%, rgba(22, 216, 245, 0.1), transparent 70%),
        radial-gradient(520px 260px at -5% 88%, rgba(122, 92, 255, 0.07), transparent 65%);
}

/* ===== 内容页顶部 ===== */
.article-hero {
    min-height: 420px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    isolation: isolate;
}

.article-hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image:
        radial-gradient(900px 360px at 80% 20%, rgba(22, 216, 245, 0.14), transparent 60%),
        linear-gradient(180deg, rgba(7, 12, 26, 0.92), rgba(11, 18, 38, 0.65)),
        url('/assets/images/backpic/back-1.webp');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.article-holder {
    position: relative;
    z-index: 5;
    margin-top: -96px;
    padding-bottom: 26px;
}

.article-panel {
    background: rgba(11, 18, 38, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 24px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
    padding: 38px 44px 42px;
}

.article-panel h1 {
    font-size: clamp(24px, 2.6vw, 36px);
    font-weight: 800;
    line-height: 1.35;
    color: #fff;
    margin: 0 0 18px;
    letter-spacing: .2px;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px 22px;
    color: var(--text-sub);
    font-size: 14px;
}

.article-meta .tag {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: rgba(22, 216, 245, 0.1);
    color: var(--cyan);
    border: 1px solid rgba(22, 216, 245, 0.22);
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 12px;
    letter-spacing: .2px;
}

.tag-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--cyan);
    box-shadow: 0 0 10px rgba(22, 216, 245, 0.8);
}

.meta-sep {
    width: 1px;
    height: 16px;
    background: rgba(255, 255, 255, 0.12);
}

.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ===== 正文区 ===== */
.article-body-wrap {
    padding: 56px 0 16px;
}

.article-main {
    max-width: 820px;
    margin: 0 auto;
    width: 100%;
}

.article-start-line {
    position: relative;
    height: 3px;
    border-radius: 3px;
    background: linear-gradient(90deg, rgba(22, 216, 245, 0.1), rgba(22, 216, 245, 0.75), rgba(122, 92, 255, 0.1));
    margin-bottom: 46px;
}

.article-content {
    font-size: 16px;
    line-height: 1.85;
    color: rgba(234, 242, 255, 0.92);
}

.article-content > * + * {
    margin-top: 1.2em;
}

.article-content h2,
.article-content h3,
.article-content h4 {
    color: #fff;
    font-weight: 800;
    line-height: 1.4;
    margin-top: 1.8em;
    margin-bottom: .7em;
}

.article-content h2 {
    font-size: 23px;
    border-left: 4px solid var(--cyan);
    padding-left: 16px;
    border-radius: 2px;
    box-shadow: -12px 0 24px -14px rgba(22, 216, 245, 0.2);
}

.article-content h3 {
    font-size: 19px;
    font-weight: 800;
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    padding-bottom: 10px;
}

.article-content p {
    margin-bottom: 1.4em;
}

.article-content ul,
.article-content ol {
    padding-left: 0;
    list-style: none;
}

.article-content ul li,
.article-content ol li {
    position: relative;
    padding-left: 24px;
    margin-bottom: .55em;
}

.article-content ul li::before {
    content: "";
    position: absolute;
    left: 4px;
    top: .75em;
    width: 7px;
    height: 7px;
    border-radius: 3px;
    background: linear-gradient(120deg, var(--cyan), var(--blue));
    box-shadow: var(--glow);
}

.article-content ol {
    counter-reset: art-cl;
}

.article-content ol li {
    counter-increment: art-cl;
}

.article-content ol li::before {
    content: counter(art-cl);
    position: absolute;
    left: 2px;
    top: 3px;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    border-radius: 8px;
    background: rgba(22, 216, 245, 0.1);
    color: var(--cyan);
    font-size: 11px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
}

.article-content blockquote {
    margin: 26px 0;
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.045);
    border-radius: 0 18px 18px 0;
    border-left: 4px solid var(--cyan);
    color: rgba(234, 242, 255, 0.82);
}

.article-content img {
    margin: 22px 0;
    border-radius: 20px;
    box-shadow: var(--shadow);
    width: 100%;
    height: auto;
}

.article-content table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: 16px;
    overflow: hidden;
    margin: 30px 0;
    font-size: 15px;
}

.article-content table th {
    background: linear-gradient(120deg, rgba(48, 134, 255, 0.24), rgba(22, 216, 245, 0.18));
    color: #fff;
    padding: 14px 16px;
    text-align: left;
    font-weight: 700;
}

.article-content table td {
    padding: 12px 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.065);
    background: rgba(255, 255, 255, 0.025);
}

.article-content table tr:nth-child(even) td {
    background: rgba(255, 255, 255, 0.045);
}

.article-content a {
    color: var(--cyan);
    border-bottom: 1px solid rgba(22, 216, 245, 0.3);
}

.article-content a:hover {
    color: #fff;
    border-bottom-color: #fff;
}

.article-content code {
    background: rgba(22, 216, 245, 0.08);
    color: var(--cyan);
    padding: 2px 8px;
    border-radius: 8px;
    font-size: .9em;
}

/* ===== 无内容状态 ===== */
.not-found-box {
    text-align: center;
    padding: 46px 22px;
    border: 1px dashed rgba(22, 216, 245, 0.28);
    border-radius: 24px;
    background: rgba(22, 216, 245, 0.03);
}

.not-found-icon {
    width: 62px;
    height: 62px;
    margin: 0 auto 16px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(122, 92, 255, 0.1);
    border: 1px solid rgba(122, 92, 255, 0.25);
    color: var(--purple);
    font-size: 28px;
    font-weight: 800;
}

.not-found-box h2 {
    font-size: 23px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 10px;
}

.not-found-box p {
    color: var(--text-sub);
    margin-bottom: 24px;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
}

/* ===== CTA ===== */
.cta-banner {
    padding: 86px 0;
    position: relative;
    isolation: isolate;
    margin-top: 30px;
}

.cta-banner-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
    background-image:
        linear-gradient(rgba(7, 12, 26, 0.82), rgba(7, 12, 26, 0.84)),
        url('/assets/images/backpic/back-2.webp');
    background-size: cover;
    background-position: center;
    border-top: 1px solid rgba(22, 216, 245, 0.12);
    border-bottom: 1px solid rgba(22, 216, 245, 0.1);
}

.cta-wrap {
    text-align: center;
    max-width: 780px;
    margin: 0 auto;
}

.cta-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 6px 16px;
    border-radius: 999px;
    background: rgba(255, 194, 75, 0.08);
    border: 1px solid rgba(255, 194, 75, 0.25);
    color: var(--gold);
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 24px;
}

.cta-wrap h2 {
    font-size: clamp(26px, 3vw, 38px);
    font-weight: 800;
    line-height: 1.4;
    color: #fff;
    margin-bottom: 16px;
}

.cta-wrap p {
    color: var(--text-sub);
    font-size: 16px;
    line-height: 1.8;
    max-width: 640px;
    margin: 0 auto 30px;
}

.cta-btns {
    display: inline-flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
}

.cta-btns .btn-primary {
    padding: 15px 30px;
    min-height: 52px;
}

/* ===== 相关阅读 ===== */
.related-section {
    padding: 84px 0 60px;
}

.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    position: relative;
    margin-bottom: 32px;
}

.heading-main {
    display: flex;
    flex-direction: column;
}

.eyebrow {
    display: block;
    text-transform: uppercase;
    letter-spacing: .46em;
    font-size: 12px;
    color: var(--cyan);
    margin-bottom: 10px;
    font-weight: 700;
}

.eyebrow-line {
    width: 42px;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), transparent);
    margin-bottom: 10px;
}

.heading-main h2 {
    margin: 0;
    font-size: clamp(24px, 2.4vw, 34px);
    font-weight: 800;
    color: #fff;
    line-height: 1.35;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.related-card {
    display: block;
    border-radius: var(--radius);
    background: var(--glass-bg);
    border: 1px solid var(--glass-line);
    overflow: hidden;
    text-decoration: none;
    transition: transform .3s ease, box-shadow .3s ease, background .3s ease;
    position: relative;
}

.related-card:hover {
    transform: translateY(-7px);
    box-shadow: 0 14px 34px rgba(0, 0, 0, 0.4), var(--glow);
    background: rgba(255, 255, 255, 0.1);
}

.related-pic {
    position: relative;
    aspect-ratio: 12 / 8;
    overflow: hidden;
    background-color: #0b142e;
    background-image: linear-gradient(135deg, rgba(48, 134, 255, 0.18), rgba(22, 216, 245, 0.05));
}

.related-pic img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}

.related-card:hover .related-pic img {
    transform: scale(1.04);
}

.related-card-body {
    padding: 20px 20px 22px;
}

.related-card-body h3 {
    font-size: 17px;
    line-height: 1.7;
    font-weight: 800;
    color: #fff;
    margin: 0 0 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-card-meta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-sub);
    font-size: 13px;
}

.arrow-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 600;
    color: var(--cyan);
    font-size: 13px;
}

.arrow-link i {
    transition: transform .25s ease;
}

.related-card:hover .arrow-link i {
    transform: translateX(4px);
}

/* ===== 分类/其他配色 ===== */
.text-cyan {
    color: var(--cyan);
}

.text-gold {
    color: var(--gold);
}

/* ===== 页脚 ===== */
.site-footer {
    background: linear-gradient(180deg, #060913, #04070e 80%);
    position: relative;
    padding: 74px 0 22px;
    margin-top: 20px;
}

.site-footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(22, 216, 245, 0.55), transparent);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 21px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
}

.footer-brand .icon {
    width: 36px;
    height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: rgba(22, 216, 245, 0.1);
    border: 1px solid rgba(22, 216, 245, 0.22);
    color: var(--cyan);
}

.footer-desc {
    color: #7D94B8;
    font-size: 14px;
    line-height: 1.85;
    max-width: 400px;
    margin-bottom: 0;
}

.footer-subtitle {
    font-size: 14px;
    font-weight: 800;
    color: #DEEBFF;
    letter-spacing: .4px;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 10px;
}

.footer-subtitle::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, rgba(22, 216, 245, 0.6), transparent);
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin-bottom: 2px;
}

.footer-links a {
    display: inline-block;
    min-height: 32px;
    line-height: 1.6;
    color: #7D94B8;
    font-size: 14px;
    padding: 4px 0;
}

.footer-links a:hover {
    color: var(--cyan);
    padding-left: 4px;
}

.copyright-row {
    margin-top: 46px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    color: #6c80a0;
    font-size: 14px;
    line-height: 1.8;
    row-gap: 8px;
}

/* ===== 响应式 ===== */
@media (max-width: 1199.98px) {
    .related-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 767.98px) {
    .site-header {
        padding: 10px 0;
    }

    .container {
        padding-left: 20px;
        padding-right: 20px;
    }

    .article-hero {
        min-height: 260px;
    }

    .article-holder {
        margin-top: -60px;
        padding-bottom: 10px;
    }

    .article-panel {
        padding: 24px 20px 28px;
        border-radius: 20px;
    }

    .article-panel h1 {
        font-size: 24px;
        margin-bottom: 18px;
    }

    .article-meta {
        gap: 10px 14px;
        font-size: 13px;
    }

    .article-body-wrap {
        padding-top: 38px;
    }

    .article-start-line {
        margin-bottom: 32px;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }

    .section-heading {
        flex-wrap: wrap;
        gap: 16px;
    }

    .cta-banner {
        padding: 60px 0;
    }

    .cta-btns {
        width: 100%;
        flex-direction: column;
        align-items: stretch;
    }

    .cta-btns .btn {
        width: 100%;
    }

    .site-footer {
        padding: 52px 0 24px;
    }

    .copyright-row {
        margin-top: 30px;
    }
}

@media (max-width: 575.98px) {
    .navbar-brand-wrap {
        font-size: 18px;
    }

    .brand-icon {
        width: 34px;
        height: 34px;
        flex-basis: 34px;
    }

    .related-card-body {
        padding: 18px;
    }

    .article-content {
        font-size: 15.5px;
    }

    .article-content blockquote {
        padding: 16px 18px;
    }
}

/* roulang page: category2 */
:root{
  --bg-deep:#070C1A;
  --bg-main:#0B1226;
  --bg-soft:#0E1830;
  --cyan:#16D8F5;
  --blue:#3086FF;
  --purple:#7A5CFF;
  --gold:#FFC24B;
  --white:#EAF2FF;
  --muted:#8FA5C8;
  --border:rgba(255,255,255,0.08);
  --border-light:rgba(255,255,255,0.14);
  --card-bg:rgba(255,255,255,0.06);
  --card-glass:rgba(255,255,255,0.075);
  --radius:20px;
  --radius-sm:12px;
  --shadow:0 8px 30px rgba(0,0,0,0.35);
  --glow:0 0 24px rgba(22,216,245,0.22);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:linear-gradient(150deg,#070C1A 0%,#0B1226 100%);
  background-attachment:fixed;
  color:var(--white);
  font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  line-height:1.75;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;width:100%}
.row{display:flex;flex-wrap:wrap;margin-left:-12px;margin-right:-12px}
.col-lg-5,.col-lg-2,.col-lg-3,.col-md-12,.col-6{padding-left:12px;padding-right:12px;width:100%}
.mt-2{margin-top:.5rem}
.me-1{margin-right:.25rem}
.ms-lg-2{margin-left:.5rem}
.text-white{color:#fff!important}
/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:11px 26px;border-radius:var(--radius-sm);
  font-weight:800;letter-spacing:.4px;font-size:15px;
  border:1px solid transparent;cursor:pointer;transition:all .25s ease;
}
.btn i,.btn svg{font-size:14px}
.btn-primary{
  background:linear-gradient(135deg,#3086FF,#16D8F5);
  color:#fff;box-shadow:0 6px 20px rgba(48,134,255,.28),0 0 20px rgba(22,216,245,.16);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(48,134,255,.38),0 0 30px rgba(22,216,245,.3);color:#fff}
.btn-ghost{
  background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.16);color:#DCE9FF;
  backdrop-filter:blur(12px);
}
.btn-ghost:hover{background:rgba(255,255,255,.12);border-color:rgba(22,216,245,.55);color:#fff;box-shadow:0 0 18px rgba(22,216,245,.18)}
.btn-block{width:100%}
.btn:focus-visible,.nav-link:focus-visible,.tag:focus-visible,
.acc-btn:focus-visible,.widget-link:focus-visible{
  outline:2px solid var(--blue);outline-offset:3px;border-radius:8px;
}
/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(6,11,24,.55);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(22,216,245,.08);
  transition:background .3s,box-shadow .3s,border-color .3s;
  padding:12px 0;
}
.site-header.scrolled{
  background:rgba(7,12,26,.86);
  box-shadow:0 8px 30px rgba(0,0,0,.26);
  border-bottom:1px solid rgba(22,216,245,.22);
}
.navbar{
  display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;
}
.navbar-brand-wrap{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.brand-icon{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,#3086FF,#16D8F5);
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:17px;box-shadow:0 0 18px rgba(22,216,245,.38);
}
.brand-name{font-size:20px;font-weight:800;letter-spacing:.2px;color:#fff;white-space:nowrap}
.brand-name .cyan{background:linear-gradient(90deg,#16D8F5,#7AE9FF);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.navbar-toggler{
  display:none;width:44px;height:44px;border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.05);border-radius:12px;align-items:center;justify-content:center;
  cursor:pointer;
}
.navbar-toggler-icon{width:18px;height:16px;position:relative}
.navbar-toggler-icon:before,.navbar-toggler-icon:after,.navbar-toggler-icon span{
  content:"";position:absolute;left:0;width:100%;height:2px;background:#fff;border-radius:2px;transition:.3s;
}
.navbar-toggler-icon:before{top:0}
.navbar-toggler-icon span{top:7px}
.navbar-toggler-icon:after{bottom:0}
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:before{top:8px;transform:rotate(45deg)}
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon:after{bottom:6px;transform:rotate(-45deg)}
.navbar-toggler[aria-expanded="true"] .navbar-toggler-icon span{opacity:0}
.navbar-collapse{display:flex;align-items:center;flex:1;justify-content:flex-end}
.navbar-nav{list-style:none;margin:0;padding:0;display:flex;align-items:center;gap:26px}
.ms-auto{margin-left:auto}
.nav-item{list-style:none}
.nav-link{
  color:#B8CAE6;font-weight:600;font-size:15px;padding:10px 0;position:relative;
  transition:color .2s ease;
}
.nav-link:after{
  content:"";position:absolute;left:0;bottom:2px;height:2px;width:0;
  background:linear-gradient(90deg,#16D8F5,#3086FF);
  border-radius:4px;transition:width .25s ease;
}
.nav-link:hover{color:#fff}
.nav-link:hover:after{width:100%}
.nav-link.active{color:#fff}
.nav-link.active:after{width:100%}
.nav-link.nav-vip-btn{
  display:inline-flex;align-items:center;gap:6px;
  background:linear-gradient(135deg,#3086FF,#16D8F5);
  border-radius:999px;padding:9px 22px;font-weight:800;color:#fff;
  box-shadow:0 0 18px rgba(22,216,245,.22);
  transition:.25s;
}
.nav-link.nav-vip-btn:hover{box-shadow:0 0 28px rgba(22,216,245,.44);transform:translateY(-1px)}
.nav-link.nav-vip-btn:after{display:none}
i.fa-bolt:before{content:"\26A1";font-style:normal}
i.fa-crown:before{content:"\265B";font-style:normal}
i.fa-check:before{content:"\2713";font-style:normal;font-weight:bold}
i.fa-chevron-down:before{content:"\276F";font-style:normal}
i.fa-arrow-right:before{content:"\2192";font-style:normal}
/* ===== Category hero ===== */
.cat-hero{
  position:relative;overflow:hidden;
  padding:74px 0 66px;
  background:
    radial-gradient(520px 260px at 10% 10%,rgba(22,216,245,.12),transparent 65%),
    radial-gradient(420px 320px at 88% 20%,rgba(122,92,255,.1),transparent 60%),
    linear-gradient(160deg,#0D1530,#070C1A 70%);
  border-bottom:1px solid rgba(255,255,255,.05);
}
.cat-hero:before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);
  background-size:48px 48px;
  mask-image:radial-gradient(ellipse at center,black,transparent 78%);
}
.cat-hero .watermark{
  position:absolute;right:-1%;bottom:-2%;font-size:130px;font-weight:900;line-height:1;
  color:rgba(255,255,255,.035);white-space:nowrap;pointer-events:none;letter-spacing:4px;
}
.breadcrumb{color:#7D94B8;font-size:13.5px;margin:0 0 22px;display:flex;gap:9px;align-items:center;position:relative;z-index:2}
.breadcrumb a{color:var(--muted);transition:color .2s}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb span{color:#5A7096}
.breadcrumb .current{color:#fff;font-weight:600}
.page-title{margin:0 0 18px;font-size:clamp(28px,3.6vw,42px);font-weight:900;line-height:1.3;position:relative;z-index:2}
.page-title .cyan{color:var(--cyan)}
.page-title .white{color:#fff}
.page-title .slash{color:var(--muted);font-weight:300;margin:0 10px}
.hero-desc{
  max-width:720px;color:#C1D2EC;font-size:16px;line-height:1.9;
  margin:0 0 30px;position:relative;z-index:2;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:16px;position:relative;z-index:2}
.hero-stats{
  display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;
  margin-top:38px;position:relative;z-index:2;max-width:720px;
}
.stat-box{
  background:rgba(255,255,255,.055);border:1px solid rgba(255,255,255,.09);
  border-radius:16px;padding:16px 18px;text-align:left;
}
.stat-num{font-size:26px;font-weight:900;color:#fff;line-height:1.2;letter-spacing:1px}
.stat-num .metric{font-size:15px;margin-left:3px;color:var(--cyan)}
.stat-label{font-size:13px;color:var(--muted);margin-top:4px}
/* ===== Page architecture ===== */
.page-content{padding:60px 0 72px;position:relative}
.content-grid{display:grid;grid-template-columns:minmax(0,1.85fr) minmax(0,.85fr);gap:30px;align-items:start}
.col-main{display:flex;flex-direction:column;gap:32px}
.col-side{display:flex;flex-direction:column;gap:24px;position:sticky;top:96px}
/* ===== module ===== */
.module{width:100%}
.section-head{margin-bottom:22px}
.eyebrow{
  display:flex;align-items:center;gap:12px;font-size:12px;font-weight:800;
  letter-spacing:2.5px;color:var(--cyan);text-transform:uppercase;
}
.eyebrow:before{content:"";width:28px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent);border-radius:2px}
.section-title{margin:8px 0 0;font-size:clamp(22px,2.6vw,30px);font-weight:800;color:#fff;letter-spacing:.4px}
.section-desc{color:#9DB2D4;margin-top:10px;font-size:15px;max-width:680px}
.card{
  background:var(--card-bg);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;position:relative;
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  box-shadow:var(--shadow);overflow:hidden;
}
.card:before{
  content:"";position:absolute;top:0;left:20px;right:20px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(255,255,255,.22),transparent);
}
/* cover card */
.media-card{
  display:grid;grid-template-columns:1.1fr 1fr;gap:24px;align-items:center;
}
.media-copy .desc,.media-copy p{color:#AABFDD;font-size:15px;margin:14px 0}
.dot-list{list-style:none;padding:0;margin:16px 0 0;display:grid;grid-template-columns:1fr;gap:8px}
.dot-list li{padding-left:30px;position:relative;color:#C5D6F0;font-size:15px;line-height:1.65}
.dot-list li:before{content:"\2713";position:absolute;left:0;top:1px;width:20px;height:20px;border-radius:50%;background:rgba(22,216,245,.15);color:var(--cyan);font-size:11px;display:flex;align-items:center;justify-content:center}
.media-figure{border-radius:16px;overflow:hidden;background:linear-gradient(160deg,#123B66,#0B1E3D);position:relative;min-height:190px;display:flex;align-items:center;justify-content:center}
.media-figure img{width:100%;height:100%;object-fit:cover;max-height:330px}
/* double cards */
.duo-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.mini-card{padding:22px;border-radius:var(--radius);background:rgba(255,255,255,.05);border:1px solid var(--border);position:relative;transition:.28s}
.mini-card:hover{transform:translateY(-5px);border-color:rgba(22,216,245,.4);box-shadow:0 12px 30px rgba(0,0,0,.2),0 0 20px rgba(22,216,245,.14)}
.mini-card h4{font-size:17px;color:#fff;font-weight:800;margin:6px 0 10px}
.mini-card p{font-size:14.5px;color:#A2B7D6;margin:0 0 16px}
.mini-ico{width:42px;height:42px;border-radius:12px;background:linear-gradient(135deg,rgba(48,134,255,.3),rgba(22,216,245,.25));display:flex;align-items:center;justify-content:center;color:var(--cyan);font-size:20px}
.link-more{display:inline-flex;align-items:center;gap:7px;color:var(--cyan);font-size:14px;font-weight:700;transition:gap .25s}
.link-more:hover{gap:11px}
/* tier */
.tier-list{display:flex;flex-direction:column;gap:14px}
.tier-item{
  display:grid;grid-template-columns:96px 1fr auto;gap:18px;align-items:center;
  background:rgba(255,255,255,.045);border:1px solid rgba(255,255,255,.08);
  border-left:3px solid rgba(22,216,245,.28);
  padding:20px 22px;border-radius:14px;transition:.25s;
}
.tier-item:hover{background:rgba(255,255,255,.08);border-left-color:var(--cyan);transform:translateX(4px)}
.tier-rank{font-weight:900;font-size:24px;color:#fff;line-height:1.15;letter-spacing:1px}
.tier-rank small{display:block;font-size:11px;color:var(--muted);font-weight:600;letter-spacing:1.5px;margin-top:2px}
.tier-name{font-size:16px;font-weight:800;margin-bottom:4px;color:#fff}
.tier-name .recom{margin-left:7px;font-size:10px;background:rgba(255,194,75,.18);border:1px solid rgba(255,194,75,.45);color:var(--gold);border-radius:999px;padding:2px 8px}
.tier-desc{font-size:13.5px;color:#9FB5D6;margin:0}
.tier-top{display:flex;align-items:center;flex-wrap:wrap}
.tier-top .badge{margin-left:9px}
.badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700}
.badge-gold{background:rgba(255,194,75,.15);color:var(--gold);border:1px solid rgba(255,194,75,.3)}
.badge-cyan{background:rgba(22,216,245,.12);color:var(--cyan);border:1px solid rgba(22,216,245,.28)}
/* perks cards */
.perk-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.perk-card{padding:22px;border-radius:var(--radius);background:rgba(255,255,255,.05);border:1px solid var(--border);transition:.28s}
.perk-card:hover{background:rgba(255,255,255,.09);transform:translateY(-5px);border-color:rgba(22,216,245,.35);box-shadow:0 14px 25px rgba(0,0,0,.18)}
.perk-ico{width:46px;height:46px;border-radius:14px;background:linear-gradient(145deg,rgba(122,92,255,.24),rgba(22,216,245,.16));display:flex;align-items:center;justify-content:center;color:var(--cyan);font-size:22px;margin-bottom:16px}
.perk-card h4{font-size:16.5px;color:#fff;font-weight:800;margin:6px 0 12px}
.perk-card ul{list-style:none;padding:0;margin:0}
.perk-card li{padding-left:22px;position:relative;font-size:14px;color:#AFC2E0;margin-bottom:10px;line-height:1.6}
.perk-card li:before{content:"";position:absolute;left:2px;top:8px;width:6px;height:6px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(22,216,245,.5)}
/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.step-card{position:relative;padding:18px 18px 18px 0}
.step-num{font-size:34px;font-weight:900;color:rgba(22,216,245,.18);line-height:1;font-style:italic;letter-spacing:-1px}
.step-card h4{margin:10px 0 6px;color:#fff;font-size:16px}
.step-card p{color:#93A9C9;font-size:13.5px;margin:0}
.step-line{display:flex;align-items:center;justify-content:center;align-self:center}
.arrow-sep{color:var(--cyan);font-size:20px;line-height:1}
/* FAQ */
.accordion{display:flex;flex-direction:column;gap:12px}
.acc-item{
  background:rgba(255,255,255,.045);
  border:1px solid rgba(255,255,255,.08);
  border-radius:16px;overflow:hidden;transition:.25s;
}
.acc-item.active{background:rgba(22,216,245,.08);border-color:rgba(22,216,245,.35);box-shadow:0 0 20px rgba(22,216,245,.12)}
.acc-btn{
  width:100%;display:flex;align-items:center;gap:16px;text-align:left;
  background:none;border:0;color:#fff;font-size:15.5px;font-weight:700;
  min-height:60px;cursor:pointer;padding:12px 20px 12px 16px;
}
.acc-q{
  flex-shrink:0;width:28px;height:28px;border-radius:50%;
  background:rgba(22,216,245,.15);color:var(--cyan);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:900;
}
.acc-item.active .acc-q{background:var(--cyan);color:#0B1226}
.acc-symbol{margin-left:auto;transition:transform .3s;color:var(--muted);flex-shrink:0}
.acc-item.active .acc-symbol{transform:rotate(45deg);color:var(--cyan)}
.acc-panel{max-height:0;overflow:hidden;transition:max-height .3s ease}
.acc-content{padding:0 20px 20px 62px;color:#AFC2E0;font-size:14.5px;line-height:1.85}
/* Sidebar */
.side-card{
  background:var(--card-bg);border:1px solid var(--border);border-radius:var(--radius);
  padding:20px;backdrop-filter:blur(12px);position:relative;
}
.side-card-title{
  display:flex;align-items:center;gap:9px;
  font-size:15px;font-weight:800;color:#fff;margin:0 0 16px;
  padding-bottom:12px;border-bottom:1px solid rgba(255,255,255,.07);
}
.side-card-title .line{width:4px;height:16px;background:linear-gradient(180deg,var(--cyan),var(--blue));border-radius:4px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  font-size:13px;color:#B7C9E5;background:rgba(255,255,255,.06);
  border:1px solid rgba(255,255,255,.09);border-radius:999px;
  padding:6px 13px;line-height:1.4;cursor:pointer;transition:.2s;
}
.tag:hover,.tag.active{color:#fff;border-color:var(--cyan);background:rgba(22,216,245,.12);box-shadow:0 0 12px rgba(22,216,245,.18)}
.tag.hot{background:rgba(22,216,245,.13);border-color:rgba(22,216,245,.35);color:#fff;font-weight:700}
.widget-list{list-style:none;padding:0;margin:0}
.widget-list li{margin-bottom:14px}
.widget-list a{display:grid;grid-template-columns:34px 1fr;gap:10px;color:#AFC2E0;font-size:14px;transition:.2s}
.widget-list a:hover{color:#fff}
.widget-num{font-size:17px;font-weight:900;color:rgba(22,216,245,.35)}
.side-gift{
  border:1px solid rgba(255,194,75,.28);
  background:linear-gradient(145deg,rgba(255,194,75,.1),rgba(122,92,255,.06) 60%);
  border-radius:var(--radius);padding:22px;position:relative;overflow:hidden;
}
.side-gift .gift-tag{display:inline-block;background:rgba(255,194,75,.16);color:var(--gold);border:1px solid rgba(255,194,75,.3);font-size:12px;font-weight:800;padding:4px 12px;border-radius:999px;margin-bottom:12px}
.side-gift h4{color:#fff;font-size:17px;line-height:1.4;margin:0 0 10px}
.side-gift p{font-size:14px;color:#B9A88C;margin:0 0 18px;line-height:1.7}
/* CTA section */
.cta-banner{
  position:relative;overflow:hidden;padding:74px 0 80px;
  background-image:linear-gradient(rgba(7,11,23,.76),rgba(8,14,31,.86)),url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  text-align:center;
}
.cta-banner:before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(520px 270px at 18% 70%,rgba(22,216,245,.16),transparent 60%),radial-gradient(480px 300px at 85% 20%,rgba(48,134,255,.14),transparent 60%);
  pointer-events:none;
}
.cta-inner{position:relative;z-index:2;max-width:720px;margin:0 auto}
.cta-inner .badge{margin-bottom:16px}
.cta-title{font-size:clamp(25px,3.4vw,40px);line-height:1.3;font-weight:900;color:#fff;margin:6px 0 14px}
.cta-title span{color:var(--cyan)}
.cta-desc{color:#B9CBEA;margin:0 0 30px;font-size:16px;line-height:1.9}
/* Footer */
.site-footer{
  background:#050812;position:relative;margin-top:60px;
  border-top:1px solid rgba(22,216,245,.15);
}
.site-footer:before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(22,216,245,.45),transparent);
}
.site-footer .footer-inner{padding:56px 0 24px}
.site-footer .row{display:flex;justify-content:space-between;gap:10px}
.site-footer .col-lg-5{flex:0 0 39%;width:39%}
.site-footer .col-lg-2{flex:0 0 15%;width:15%}
.site-footer .col-lg-3{flex:0 0 25%;width:25%}
.site-footer .col-md-12{width:auto}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.footer-brand .icon{
  width:40px;height:40px;border-radius:12px;flex-shrink:0;
  background:linear-gradient(135deg,#3086FF,#16D8F5);
  display:flex;align-items:center;justify-content:center;color:#fff;
  box-shadow:0 0 16px rgba(22,216,245,.3);
}
.footer-brand .name{font-weight:900;color:#fff;font-size:19px}
.footer-desc{color:#758BB0;font-size:14px;line-height:1.9;margin:0;max-width:380px}
.footer-subtitle{font-size:15px;font-weight:800;color:#EAEAFF;margin-bottom:15px;position:relative;padding-bottom:7px}
.footer-subtitle:after{content:"";position:absolute;bottom:0;left:0;width:22px;height:2px;background:linear-gradient(90deg,var(--cyan),transparent);border-radius:2px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:#7E96BC;font-size:14px;transition:color .2s,padding-left .2s}
.footer-links a:hover{color:var(--cyan);padding-left:5px}
.copyright-row{
  border-top:1px solid rgba(255,255,255,.06);margin-top:24px;
  color:#62779C;font-size:13px;padding-top:18px;
}
/* responsive */
@media(max-width:1199.98px){
  .navbar-nav{gap:20px}
  .container{padding-left:20px;padding-right:20px}
}
@media(max-width:991.98px){
  .navbar{padding-top:4px}
  .navbar-toggler{display:inline-flex}
  .navbar-collapse{
    display:flex;flex-basis:100%;max-height:0;overflow:hidden;
    width:100%;flex-direction:column;align-items:stretch;
    transition:max-height .3s ease;
  }
  .navbar-collapse.show{max-height:calc(100vh - 90px);overflow-y:auto;margin-top:12px;padding-top:8px;border-top:1px solid rgba(255,255,255,.08)}
  .navbar-nav{flex-direction:column;align-items:stretch;gap:4px}
  .nav-item{width:100%}
  .nav-link{display:block;padding:13px 12px;border-radius:10px}
  .nav-link:after{display:none}
  .nav-link:hover{background:rgba(255,255,255,.05)}
  .nav-link.active{background:rgba(22,216,245,.1);color:var(--cyan)}
  .nav-link.nav-vip-btn{margin-top:12px;justify-content:center;padding:13px 12px;width:100%}
  .content-grid{grid-template-columns:1fr}
  .col-side{position:relative;top:0}
  .col-main,.col-side{gap:22px}
  .cat-hero{padding:45px 0 44px}
  .cat-hero .watermark{font-size:80px}
  .hero-stats{grid-template-columns:repeat(3,1fr)}
  .duo-grid,.media-card{grid-template-columns:1fr}
  .media-figure img{max-height:260px}
  .perk-grid{grid-template-columns:repeat(2,1fr)}
  .steps{display:grid;grid-template-columns:repeat(2,1fr);row-gap:22px}
  .site-footer .row{gap:28px 20px;flex-wrap:wrap}
  .site-footer .col-lg-5{flex:0 0 58%;width:58%}
  .site-footer .col-lg-2{flex:0 0 20%;width:20%}
  .site-footer .col-lg-3{flex:0 0 100%;width:100%}
}
@media(max-width:767.98px){
  body{font-size:15px}
  .container{padding-left:18px;padding-right:18px}
  .brand-name{font-size:18px}
  .brand-icon{width:34px;height:34px}
  .hero-stats{grid-template-columns:1fr;gap:10px;max-width:none}
  h1.page-title{font-size:26px}
  .duo-grid,.perk-grid{grid-template-columns:1fr}
  .tier-item{grid-template-columns:1fr;gap:8px;padding:18px;border-left-width:3px}
  .tier-rank{font-size:20px}
  .steps{grid-template-columns:1fr}
  .content-grid{padding-top:24px}
  .cta-banner{padding:54px 0 58px;background-attachment:scroll}
  .site-footer .footer-top{gap:24px}
  .site-footer .col-lg-5,.site-footer .col-lg-2,.site-footer .col-lg-3{flex:0 0 100%;width:100%}
  .footer-links a,.footer-desc,.footer-links li{font-size:14px}
  .copyright-row{flex-direction:column;gap:5px;align-items:flex-start}
  .meal-grid {grid-template-columns:1fr}
}

/* roulang page: category3 */
:root {
            --bg-deep: #050812;
            --bg-main: #070C1A;
            --bg-main2: #0B1226;
            --cyan: #16D8F5;
            --blue: #3086FF;
            --purple: #7A5CFF;
            --gold: #FFC24B;
            --text-main: #EAF2FF;
            --text-muted: #8FA5C8;
            --border-light: rgba(255, 255, 255, .08);
            --glass-bg: rgba(255, 255, 255, .06);
            --radius-card: 20px;
            --radius-btn: 12px;
            --shadow-card: 0 8px 30px rgba(0, 0, 0, .35);
            --glow-cyan: 0 0 24px rgba(22, 216, 245, .25);
            --grad-main: linear-gradient(135deg, #3086FF 0%, #16D8F5 100%);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: linear-gradient(180deg, var(--bg-main) 0%, var(--bg-main2) 45%, var(--bg-main) 100%);
            background-color: var(--bg-main);
            color: var(--text-main);
            line-height: 1.7;
            overflow-x: hidden;
        }

        a {
            color: var(--cyan);
            text-decoration: none;
            transition: color .2s ease;
        }

        a:hover {
            color: #fff;
        }

        img {
            max-width: 100%;
        }

        .container {
            max-width: 1200px;
        }

        .gradient-text {
            background: linear-gradient(120deg, var(--cyan), var(--blue));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }

        .text-muted {
            color: var(--text-muted) !important;
        }

        .section {
            padding: 80px 0;
        }

        .section-tight {
            padding: 64px 0;
        }

        .section-head {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 40px;
        }

        .section-head .section-en {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            font-weight: 800;
            letter-spacing: .18em;
            color: var(--cyan);
            text-transform: uppercase;
            background: rgba(22, 216, 245, .08);
            border: 1px solid rgba(22, 216, 245, .18);
            padding: 6px 16px;
            border-radius: 999px;
        }

        .section-head .section-bar {
            width: 52px;
            height: 3px;
            border-radius: 99px;
            background: var(--grad-main);
            background: linear-gradient(90deg, var(--cyan), transparent);
        }

        .section-title {
            margin: 0;
            font-size: clamp(24px, 2.8vw, 36px);
            font-weight: 800;
            line-height: 1.35;
            color: var(--text-main);
            letter-spacing: .01em;
        }

        .section-desc {
            max-width: 680px;
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
        }

        .btn-brand {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--grad-main);
            border: 0;
            color: #041528;
            font-weight: 700;
            font-size: 15px;
            line-height: 1;
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            box-shadow: 0 0 18px rgba(22, 216, 245, .22);
            transition: all .22s ease;
        }

        .btn-brand:hover {
            color: #041528;
            transform: translateY(-2px);
            box-shadow: 0 0 28px rgba(22, 216, 245, .38);
        }

        .btn-outline-lite {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .16);
            color: #EAF2FF;
            font-weight: 600;
            font-size: 15px;
            padding: 13px 24px;
            border-radius: var(--radius-btn);
            transition: all .22s ease;
        }

        .btn-outline-lite:hover {
            background: rgba(255, 255, 255, .1);
            border-color: rgba(22, 216, 245, .55);
            color: #fff;
            transform: translateY(-1px);
        }

        .btn:focus-visible,
        .btn-brand:focus-visible,
        .btn-outline-lite:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--blue);
            outline-offset: 3px;
        }

        .navbar {
            padding-top: 14px;
            padding-bottom: 14px;
            background: rgba(7, 12, 26, .48);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(22, 216, 245, .12);
            transition: background .3s ease, border-color .3s ease, box-shadow .3s ease;
            z-index: 1080;
        }

        .navbar.is-scrolled {
            background: rgba(7, 12, 26, .82);
            border-bottom-color: rgba(22, 216, 245, .28);
            box-shadow: 0 8px 32px rgba(0, 0, 0, .38);
        }

        .navbar-brand-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            min-width: 0;
        }

        .navbar-brand-wrap:hover {
            color: #fff;
        }

        .brand-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--grad-main);
            color: #041528;
            font-size: 17px;
            flex: 0 0 40px;
            box-shadow: 0 0 23px rgba(22, 216, 245, .35);
        }

        .brand-name {
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: .02em;
            white-space: nowrap;
        }

        .brand-name .cyan {
            color: var(--cyan);
            font-weight: 800;
        }

        .navbar-nav {
            gap: 6px;
        }

        .navbar-nav .nav-item {
            margin: 0;
        }

        .navbar-nav .nav-link {
            padding: 9px 16px;
            color: #A9BDE0;
            font-size: 15px;
            font-weight: 500;
            border-radius: 999px;
            position: relative;
            border: 1px solid transparent;
            transition: all .22s ease;
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, .05);
        }

        .navbar-nav .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(48, 134, 255, .18), rgba(22, 216, 245, .16));
            border-color: rgba(22, 216, 245, .22);
            box-shadow: inset 0 0 20px rgba(22, 216, 245, .06);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--cyan), var(--blue));
            opacity: .9;
        }

        .navbar .nav-vip-btn {
            background: var(--grad-main) !important;
            color: #041528 !important;
            font-weight: 700;
            border: 0;
            box-shadow: 0 4px 18px rgba(22, 216, 245, .2);
            padding: 10px 21px !important;
            border-radius: 999px;
        }

        .navbar .nav-vip-btn:hover {
            background: linear-gradient(135deg, #16D8F5, #3086FF) !important;
            transform: translateY(-1px);
            box-shadow: 0 7px 25px rgba(22, 216, 245, .35);
        }

        .navbar .nav-vip-btn.active::after,
        .navbar .nav-vip-btn::after {
            display: none !important;
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, .22);
            width: 46px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 0;
            background: transparent;
        }

        .navbar-toggler-icon {
            width: 24px;
            height: 2px;
            background: #fff;
            position: relative;
            border-radius: 10px;
            display: inline-block;
        }

        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: "";
            position: absolute;
            left: 0;
            width: 100%;
            height: 2px;
            background: #fff;
            border-radius: 10px;
            transition: transform .2s ease;
        }

        .navbar-toggler-icon::before {
            top: -8px;
        }

        .navbar-toggler-icon::after {
            top: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--blue);
            outline-offset: 2px;
        }

        @media (min-width: 992px) {
            .nav-link-wrap {
                margin-left: auto;
            }
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(7, 12, 26, .98);
                border: 1px solid rgba(255, 255, 255, .08);
                border-radius: 18px;
                padding: 18px;
                margin-top: 12px;
                box-shadow: 0 18px 50px rgba(0, 0, 0, .55);
            }

            .navbar-nav {
                gap: 2px;
            }

            .navbar-nav .nav-link {
                padding: 13px 16px;
                border-radius: 12px;
                border-left: 4px solid transparent;
            }

            .navbar-nav .nav-link.active {
                border-left-color: var(--cyan);
                background: linear-gradient(90deg, rgba(22, 216, 245, .15), transparent);
            }

            .navbar-nav .nav-link.active::after {
                display: none;
            }

            .navbar-nav .nav-vip-btn {
                text-align: center;
                margin-top: 6px;
                border-radius: 12px !important;
            }
        }

        .category-hero {
            position: relative;
            overflow: hidden;
            padding: 66px 0 76px;
            background-image: linear-gradient(140deg, rgba(5, 8, 18, .9) 30%, rgba(10, 16, 38, .78) 100%), url("/assets/images/backpic/back-1.webp");
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border-light);
        }

        .category-hero::before {
            content: "资讯速递";
            position: absolute;
            right: 2vw;
            top: 10%;
            font-size: clamp(86px, 14vw, 190px);
            font-weight: 900;
            color: rgba(255, 255, 255, .045);
            line-height: 1;
            pointer-events: none;
            user-select: none;
            white-space: nowrap;
        }

        .category-hero::after {
            content: "";
            position: absolute;
            right: -80px;
            bottom: -120px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(22, 216, 245, .16), transparent 68%);
            pointer-events: none;
        }

        .category-breadcrumb {
            position: relative;
            z-index: 2;
            margin-bottom: 28px;
        }

        .category-breadcrumb .breadcrumb {
            margin-bottom: 0;
        }

        .category-breadcrumb .breadcrumb-item {
            font-size: 14px;
            color: var(--text-muted);
        }

        .category-breadcrumb .breadcrumb-item a {
            color: var(--text-muted);
        }

        .category-breadcrumb .breadcrumb-item a:hover {
            color: var(--cyan);
        }

        .category-breadcrumb .breadcrumb-item.active {
            color: #fff;
        }

        .category-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
            color: #4C6187;
        }

        .hero-content {
            position: relative;
            z-index: 2;
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid rgba(22, 216, 245, .28);
            background: rgba(22, 216, 245, .1);
            color: var(--cyan);
            font-size: 13px;
            font-weight: 800;
            padding: 6px 16px;
            border-radius: 999px;
            letter-spacing: .12em;
            text-transform: uppercase;
            margin-bottom: 20px;
        }

        .hero-title {
            margin: 0 0 20px;
            font-size: clamp(28px, 3.6vw, 46px);
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
        }

        .hero-title .cyan {
            color: var(--cyan);
            font-weight: 800;
        }

        .hero-subline {
            display: block;
            margin-top: 10px;
            font-size: clamp(24px, 2.6vw, 36px);
            color: var(--text-main);
            letter-spacing: .06em;
        }

        .hero-para {
            max-width: 610px;
            color: #B6C8E4;
            font-size: 16px;
            line-height: 1.85;
            margin-bottom: 28px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            margin-top: 24px;
        }

        .hero-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #D4E2FF;
            background: var(--glass-bg);
            border: 1px solid rgba(255, 255, 255, .12);
            padding: 8px 15px;
            border-radius: 999px;
            backdrop-filter: blur(10px);
        }

        .hero-meta .meta-item i {
            color: var(--cyan);
            font-size: 14px;
        }

        .hero-card-shell {
            position: relative;
            z-index: 2;
            border-radius: 22px;
            background: rgba(255, 255, 255, .075);
            border: 1px solid rgba(255, 255, 255, .16);
            overflow: hidden;
            box-shadow: 0 18px 44px rgba(0, 0, 0, .42), inset 0 1px 0 rgba(255, 255, 255, .12);
            backdrop-filter: blur(12px);
        }

        .hero-card-pad {
            padding: 24px;
        }

        .hero-card-shell::before {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            top: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(22, 216, 245, .8), transparent);
        }

        .watch-card-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 18px;
        }

        .watch-card-title {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-weight: 700;
            font-size: 17px;
        }

        .watch-card-title i {
            color: var(--cyan);
        }

        .watch-card-note {
            color: var(--text-muted);
            font-size: 13px;
        }

        .watch-line {
            display: flex;
            align-items: center;
            gap: 13px;
            padding: 13px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, .1);
            color: #B9CCE8;
            font-size: 14.5px;
        }

        .watch-line:last-of-type {
            border-bottom: 0;
        }

        .watch-line .line-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, rgba(22, 216, 245, .14), rgba(48, 134, 255, .12));
            color: var(--cyan);
            flex: 0 0 32px;
        }

        .watch-line .line-tag {
            margin-left: auto;
            color: var(--text-muted);
            font-size: 12px;
            border: 1px solid rgba(255, 255, 255, .08);
            padding: 2px 10px;
            border-radius: 999px;
            white-space: nowrap;
        }

        .hero-float-tip {
            position: absolute;
            right: 8px;
            top: 16px;
            background: linear-gradient(135deg, rgba(22, 216, 245, .2), rgba(48, 134, 255, .18));
            backdrop-filter: blur(10px);
            border: 1px solid rgba(22, 216, 245, .35);
            color: #fff;
            font-size: 13px;
            padding: 8px 16px;
            border-radius: 999px;
            box-shadow: var(--glow-cyan);
            z-index: 3;
            display: inline-flex;
            align-items: center;
            gap: 7px;
        }

        .hero-float-tip i {
            color: var(--cyan);
        }

        .category-layout {
            padding: 74px 0;
            position: relative;
        }

        .category-layout::before {
            content: "";
            position: absolute;
            left: -60px;
            top: 10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(122, 92, 255, .09), transparent 68%);
            pointer-events: none;
        }

        .layout-main {
            position: relative;
            z-index: 2;
        }

        .layout-aside {
            position: relative;
            z-index: 2;
        }

        .focus-big-card {
            position: relative;
            height: 100%;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .14);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            transition: transform .25s ease, box-shadow .25s ease;
        }

        .focus-big-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 14px 36px rgba(0, 0, 0, .45), var(--glow-cyan);
        }

        .focus-big-card .top-media {
            position: relative;
            min-height: 220px;
            overflow: hidden;
        }

        .focus-big-card .top-media img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            display: block;
        }

        .focus-big-card .media-shade {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(5, 8, 18, .1) 20%, rgba(5, 8, 18, .85) 100%);
        }

        .top-corner-tag {
            position: absolute;
            left: 16px;
            top: 16px;
            background: rgba(7, 12, 26, .62);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(22, 216, 245, .3);
            color: var(--cyan);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 13px;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .focus-big-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
            gap: 12px;
        }

        .focus-big-card .card-subtitle {
            color: var(--text-muted);
            font-size: 14px;
            letter-spacing: .1em;
            text-transform: uppercase;
        }

        .focus-big-card h3 {
            font-size: 21px;
            line-height: 1.45;
            margin: 0;
            color: #fff;
            font-weight: 700;
        }

        .focus-big-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 0;
        }

        .mini-news-card {
            height: 100%;
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, .055);
            border: 1px solid rgba(255, 255, 255, .13);
            padding: 20px;
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
            gap: 13px;
            transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
        }

        .mini-news-card:hover {
            transform: translateY(-3px);
            border-color: rgba(22, 216, 245, .3);
            box-shadow: 0 14px 34px rgba(0, 0, 0, .4), var(--glow-cyan);
        }

        .mini-news-card .mini-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, rgba(22, 216, 245, .16), rgba(122, 92, 255, .1));
            border: 1px solid rgba(22, 216, 245, .2);
            color: var(--cyan);
            font-size: 17px;
        }

        .mini-news-card h3 {
            font-size: 18px;
            color: #fff;
            font-weight: 700;
            margin: 0;
            line-height: 1.45;
        }

        .mini-news-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .mini-news-card .mini-tip {
            color: var(--cyan);
            font-size: 13px;
            margin-top: auto;
        }

        .track-sheet {
            margin-top: 28px;
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, .045);
            border: 1px solid rgba(255, 255, 255, .1);
            overflow: hidden;
        }

        .track-sheet .track-sheet-head {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 18px;
            padding: 22px 24px;
            background: linear-gradient(135deg, rgba(48, 134, 255, .14), rgba(22, 216, 245, .1));
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }

        .track-sheet .track-sheet-head h3 {
            margin: 0;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        .track-sheet .track-sheet-head span {
            font-size: 13px;
            color: var(--text-muted);
        }

        .track-line {
            display: flex;
            gap: 20px;
            padding: 22px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, .07);
            transition: background .2s ease;
        }

        .track-line:last-child {
            border-bottom: 0;
        }

        .track-line:hover {
            background: rgba(255, 255, 255, .03);
        }

        .track-line .track-index {
            flex: 0 0 38px;
            font-family: "DIN Alternate", "PingFang SC", sans-serif;
            font-size: 30px;
            font-weight: 800;
            color: transparent;
            -webkit-text-stroke: 1px rgba(22, 216, 245, .7);
            line-height: 1;
        }

        .track-line .track-info {
            padding-left: 0;
        }

        .track-line h4 {
            color: #fff;
            font-weight: 700;
            font-size: 17px;
            margin: 0 0 8px;
        }

        .track-line p {
            color: var(--text-muted);
            font-size: 14px;
            margin-bottom: 0;
        }

        .track-line .track-ico {
            margin-left: auto;
            color: rgba(22, 216, 245, .45);
            align-self: center;
        }

        .aside-card {
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, .045);
            border: 1px solid var(--border-light);
            margin-bottom: 24px;
            overflow: hidden;
            backdrop-filter: blur(8px);
        }

        .aside-card .aside-head {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 20px 22px 12px;
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }

        .aside-card .aside-head i {
            color: var(--cyan);
            font-size: 18px;
        }

        .aside-card .aside-head h3 {
            color: #fff;
            font-size: 17px;
            margin: 0;
            font-weight: 700;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            padding: 18px 22px 22px;
        }

        .tag-cloud a {
            display: inline-block;
            background: rgba(255, 255, 255, .055);
            border: 1px solid rgba(255, 255, 255, .09);
            color: #B8CCEA;
            font-size: 13px;
            padding: 7px 13px;
            border-radius: 999px;
            transition: all .2s ease;
        }

        .tag-cloud a:hover {
            color: #fff;
            border-color: rgba(22, 216, 245, .5);
            background: rgba(22, 216, 245, .1);
            box-shadow: 0 0 10px rgba(22, 216, 245, .1);
        }

        .tag-cloud a.hot-tag {
            color: var(--cyan);
            border-color: rgba(22, 216, 245, .25);
            background: rgba(22, 216, 245, .09);
            font-size: 15px;
            font-weight: 600;
        }

        .sidebar-route-card {
            padding: 24px;
            border-radius: var(--radius-card);
            background-image: linear-gradient(150deg, rgba(48, 134, 255, .18), rgba(22, 216, 245, .1)), url("/assets/images/backpic/back-3.webp");
            background-size: cover;
            background-position: center;
            border: 1px solid rgba(22, 216, 245, .2);
            box-shadow: 0 8px 30px rgba(0, 0, 0, .3);
            margin-bottom: 24px;
            position: relative;
            overflow: hidden;
        }

        .sidebar-route-card::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(160deg, rgba(5, 8, 18, .2), rgba(7, 12, 26, .6));
            pointer-events: none;
            z-index: 0;
        }

        .route-inner {
            position: relative;
            z-index: 2;
        }

        .sidebar-route-card .route-title {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .route-step {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #D8E5FA;
            font-size: 13px;
            margin-bottom: 10px;
        }

        .route-step i {
            color: var(--cyan);
            flex: 0 0 24px;
        }

        .sidebar-promo {
            border-radius: var(--radius-card);
            padding: 26px;
            background: linear-gradient(145deg, rgba(122, 92, 255, .12), rgba(48, 134, 255, .09));
            border: 1px solid rgba(255, 255, 255, .12);
            text-align: left;
        }

        .sidebar-promo h4 {
            color: #fff;
            font-weight: 700;
            font-size: 19px;
            margin-bottom: 10px;
        }

        .sidebar-promo p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .cms-section {
            padding: 70px 0 30px;
        }

        .cms-section .cms-item {
            display: block;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, .09);
            background: rgba(255, 255, 255, .04);
            transition: all .2s ease;
            color: inherit;
        }

        .cms-section .cms-list {
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .cms-section .cms-list li {
            padding: 18px 0;
            border-bottom: 1px dashed rgba(255, 255, 255, .08);
        }

        @media (max-width: 991px) {
            .layout-aside {
                margin-top: 12px;
            }

            .category-hero::before {
                display: none;
            }

            .focus-big-card .top-media img {
                height: 210px;
            }
        }

        .faq-section {
            padding: 82px 0;
            position: relative;
            background: linear-gradient(180deg, rgba(5, 8, 18, .5), rgba(10, 15, 34, .4));
        }

        .faq-section::before {
            content: "";
            position: absolute;
            left: 10%;
            bottom: -30px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(48, 134, 255, .08), transparent 65%);
        }

        .faq-section .faq-title-block {
            position: sticky;
            top: 140px;
        }

        .faq-section .faq-kicker {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--cyan);
            font-weight: 700;
            font-size: 13px;
            letter-spacing: .15em;
            margin-bottom: 14px;
        }

        .faq-section .faq-title {
            font-size: clamp(28px, 3vw, 40px);
            font-weight: 800;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 18px;
        }

        .faq-section .faq-tip {
            color: var(--text-muted);
            line-height: 1.85;
            font-size: 15px;
        }

        .accordion {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .accordion-item {
            background: rgba(255, 255, 255, .05);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: 18px !important;
            overflow: hidden;
            box-shadow: none;
        }

        .accordion-button {
            background: transparent;
            color: #E9F1FF;
            font-weight: 600;
            font-size: 16px;
            padding: 20px 22px;
            border: 0;
            border-radius: 18px !important;
            box-shadow: none;
            position: relative;
            transition: background .18s ease, color .18s ease;
        }

        .accordion-button::after {
            background: none;
            font-family: "Font Awesome 6 Free";
            content: "\f078";
            font-weight: 900;
            color: var(--cyan);
            opacity: .75;
            width: 18px;
            height: 18px;
            line-height: 18px;
            transition: transform .18s ease, color .18s ease;
            background-image: none;
            transform: rotate(0deg);
            margin-left: 12px;
            flex: 0 0 18px;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(180deg);
            color: var(--cyan);
        }

        .accordion-button:not(.collapsed) {
            background: linear-gradient(90deg, rgba(22, 216, 245, .14), rgba(22, 216, 245, .02));
            color: #fff;
        }

        .accordion-button:hover {
            background: rgba(22, 216, 245, .06);
        }

        .accordion-button:focus {
            box-shadow: none;
            outline: 2px solid var(--blue);
            outline-offset: 0;
        }

        .accordion-item::before {
            content: "";
            display: block;
            height: 2px;
            background: linear-gradient(90deg, var(--cyan), transparent);
            opacity: 0;
            transition: opacity .18s ease;
        }

        .accordion-item:has(.accordion-button:not(.collapsed))::before {
            opacity: 1;
        }

        .accordion-body {
            padding: 0 22px 22px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, .06);
        }

        .question-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            border-radius: 6px;
            background: linear-gradient(135deg, rgba(22, 216, 245, .22), rgba(48, 134, 255, .2));
            color: var(--cyan);
            font-weight: 800;
            font-size: 13px;
            margin-right: 10px;
        }

        .cta-band {
            position: relative;
            padding: 84px 0;
            overflow: hidden;
            background-image: linear-gradient(120deg, rgba(5, 8, 18, .82), rgba(10, 18, 40, .78)), url("/assets/images/backpic/back-2.webp");
            background-size: cover;
            background-position: center;
            border-top: 1px solid rgba(22, 216, 245, .12);
            border-bottom: 1px solid rgba(255, 255, 255, .06);
        }

        .cta-band::before {
            content: "";
            position: absolute;
            left: 15%;
            top: -70px;
            width: 310px;
            height: 310px;
            background: radial-gradient(circle, rgba(22, 216, 245, .18), transparent 68%);
        }

        .cta-band::after {
            content: "";
            position: absolute;
            right: -80px;
            bottom: -120px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(122, 92, 255, .18), transparent 68%);
        }

        .cta-band .cta-inner {
            position: relative;
            z-index: 3;
            text-align: center;
        }

        .cta-band .cta-kicker {
            display: inline-block;
            background: rgba(22, 216, 245, .12);
            border: 1px solid rgba(22, 216, 245, .25);
            color: var(--cyan);
            font-size: 14px;
            font-weight: 700;
            letter-spacing: .06em;
            padding: 8px 20px;
            border-radius: 999px;
            margin-bottom: 20px;
        }

        .cta-band h2 {
            color: #fff;
            font-size: clamp(26px, 3vw, 40px);
            font-weight: 800;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .cta-band p {
            color: #B7C9E6;
            font-size: 16px;
            max-width: 610px;
            margin: 0 auto 26px;
        }

        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .site-footer {
            background: #050812;
            border-top: 1px solid rgba(22, 216, 245, .14);
            padding-top: 52px;
            padding-bottom: 30px;
        }

        .site-footer .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
        }

        .site-footer .footer-brand .icon {
            width: 36px;
            height: 36px;
            border-radius: 11px;
            background: var(--grad-main);
            color: #041528;
            font-size: 16px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(22, 216, 245, .3);
        }

        .site-footer .footer-brand .name {
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            letter-spacing: .02em;
        }

        .site-footer .footer-desc {
            color: #7D94B8;
            font-size: 14px;
            line-height: 1.85;
            max-width: 420px;
            margin-top: 6px;
        }

        .site-footer .footer-subtitle {
            color: #EAF2FF;
            font-weight: 700;
            font-size: 16px;
            margin: 8px 0 16px;
        }

        .site-footer .footer-links {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-links a {
            color: #7D94B8;
            font-size: 14px;
            line-height: 1.8;
            display: inline-block;
            transition: color .2s ease;
        }

        .site-footer .footer-links a:hover {
            color: var(--cyan);
        }

        .copyright-row {
            border-top: 1px solid rgba(255, 255, 255, .07);
            margin-top: 40px;
            padding-top: 22px;
            color: #5F7593;
            font-size: 13px;
            gap: 12px;
        }

        .back-to-top {
            position: fixed;
            bottom: 30px;
            right: 30px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, #3086FF, #16D8F5);
            display: none;
            align-items: center;
            justify-content: center;
            color: #041528;
            font-size: 16px;
            border: 0;
            box-shadow: 0 6px 24px rgba(22, 216, 245, .3);
            z-index: 1020;
            transition: transform .2s ease, box-shadow .2s ease;
        }

        @media (max-width: 575px) {
            body {
                line-height: 1.75;
            }

            .section {
                padding: 54px 0;
            }

            .section-tight {
                padding: 44px 0;
            }

            .hero-meta .meta-item {
                padding: 6px 10px;
                font-size: 12px;
            }

            .hero-card-shell {
                border-radius: 18px;
            }

            .hero-card-pad {
                padding: 18px;
            }

            .watch-line {
                font-size: 13px;
            }

            .watch-card-note {
                display: none;
            }

            .focus-big-card .card-body {
                padding: 20px;
            }

            .focus-big-card .top-media img {
                height: 190px;
            }

            .track-sheet .track-sheet-head {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 18px;
            }

            .track-line {
                padding: 18px;
                gap: 14px;
            }

            .track-line h4 {
                font-size: 16px;
            }

            .brand-name {
                font-size: 1.05rem;
                white-space: normal;
                line-height: 1.2;
            }

            .copyright-row {
                flex-direction: column;
                text-align: left;
            }
        }

        @media (max-width: 380px) {
            .hero-title {
                font-size: 26px;
            }

            .section-title {
                font-size: 22px;
            }
        }

/* roulang page: category4 */
:root {
        --body-bg: #070C1A;
        --deep-bg: #050812;
        --card-bg: rgba(255, 255, 255, 0.055);
        --card-highlight: rgba(255, 255, 255, 0.1);
        --border-light: rgba(255, 255, 255, 0.09);
        --text-main: #EAF2FF;
        --text-sub: #8FA5C8;
        --brand-cyan: #16D8F5;
        --brand-blue: #3086FF;
        --brand-purple: #7A5CFF;
        --brand-gold: #FFC24B;
        --btn-grad: linear-gradient(135deg, #3086FF 0%, #16D8F5 100%);
        --radius-card: 20px;
        --radius-btn: 999px;
        --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.35);
        --glow: 0 0 24px rgba(22, 216, 245, 0.25);
        --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    }
    * {
        box-sizing: border-box;
    }
    html {
        scroll-behavior: smooth;
    }
    body {
        font-family: var(--font-stack);
        background: var(--body-bg);
        color: var(--text-main);
        line-height: 1.7;
        overflow-x: hidden;
        margin: 0;
        padding: 0;
    }
    a {
        color: inherit;
        text-decoration: none;
        transition: all .25s ease;
    }
    a:hover {
        color: var(--brand-cyan);
    }
    img {
        max-width: 100%;
        height: auto;
        display: block;
    }
    .container {
        max-width: 1200px;
        padding-left: 24px;
        padding-right: 24px;
    }
    .cyan {
        color: var(--brand-cyan) !important;
    }
    .section-gap {
        padding: 96px 0;
    }
    .site-header {
        position: sticky;
        top: 0;
        z-index: 1050;
        background: rgba(7, 12, 26, 0.55);
        backdrop-filter: blur(18px);
        -webkit-backdrop-filter: blur(18px);
        border-bottom: 1px solid rgba(22, 216, 245, 0.14);
        padding: 0;
    }
    .navbar {
        padding: 0;
        min-height: 76px;
    }
    .navbar-brand-wrap {
        display: flex;
        align-items: center;
        gap: 12px;
        font-size: 22px;
        font-weight: 800;
        letter-spacing: 0.4px;
        transition: opacity .2s;
    }
    .navbar-brand-wrap:hover {
        opacity: .9;
        color: #fff;
    }
    .brand-icon {
        width: 40px;
        height: 40px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 12px;
        background: linear-gradient(145deg, rgba(48, 134, 255, .2), rgba(22, 216, 245, .25));
        border: 1px solid rgba(22, 216, 245, .35);
        color: var(--brand-cyan);
        font-size: 18px;
        box-shadow: 0 0 16px rgba(22, 216, 245, .25);
    }
    .brand-name {
        background: linear-gradient(180deg, #fff 0%, #EAF2FF 100%);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .navbar-nav .nav-item {
        margin-left: 6px;
        margin-right: 6px;
    }
    .navbar-nav .nav-link {
        color: rgba(234, 242, 255, 0.75);
        font-size: 15px;
        font-weight: 500;
        padding: 8px 2px;
        position: relative;
        margin-right: 4px;
        margin-left: 4px;
        display: inline-block;
    }
    .navbar-nav .nav-link:hover {
        color: var(--brand-cyan);
    }
    .navbar-nav .nav-link::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 100%;
        height: 2px;
        background: linear-gradient(90deg, var(--brand-blue), var(--brand-cyan));
        border-radius: 2px;
        opacity: 0;
        transform: scaleX(0);
        transform-origin: left center;
        transition: transform .25s ease, opacity .2s ease;
    }
    .navbar-nav .nav-link:hover::after,
    .navbar-nav .nav-link.active::after {
        opacity: 1;
        transform: scaleX(1);
    }
    .navbar-nav .nav-link.active {
        color: #fff;
    }
    .nav-vip-btn {
        background: var(--btn-grad);
        color: #fff !important;
        padding: 8px 20px !important;
        border-radius: 50px;
        box-shadow: 0 0 20px rgba(22, 216, 245, 0.22);
        font-weight: 600;
        min-width: 112px;
        text-align: center;
        transition: all .25s ease;
        margin-left: 8px !important;
    }
    .nav-vip-btn::after {
        display: none;
    }
    .nav-vip-btn:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 28px rgba(22, 216, 245, .4);
        color: #fff !important;
    }
    .navbar-toggler {
        border: 1px solid rgba(255, 255, 255, 0.2);
        border-radius: 10px;
        outline: none;
    }
    .navbar-toggler:focus {
        box-shadow: 0 0 0 2px rgba(48, 134, 255, .35);
    }
    .navbar-toggler-icon {
        background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%28234, 242, 255, 0.85%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
    }
    @media (max-width: 991.98px) {
        .navbar-collapse {
            background: rgba(9, 14, 31, 0.98);
            backdrop-filter: blur(18px);
            border-radius: 18px;
            border: 1px solid rgba(255, 255, 255, .08);
            padding: 16px;
            margin-top: 14px;
        }
        .navbar-nav .nav-link {
            display: block;
            padding: 13px 12px !important;
            margin: 0;
            border-radius: 10px;
        }
        .navbar-nav .nav-link:hover {
            background: rgba(22, 216, 245, .08);
        }
        .navbar-nav .nav-link::after {
            left: 6px;
            width: 3px;
            height: auto;
            top: 20%;
            bottom: 20%;
            transform: none;
            opacity: 0;
        }
        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            opacity: 1;
            transform: none;
        }
        .nav-vip-btn {
            display: inline-block;
            margin-top: 8px;
            text-align: center;
        }
    }
    .category-hero {
        position: relative;
        background-color: #060A18;
        background-image:
            radial-gradient(420px 260px at 12% 28%, rgba(22, 216, 245, 0.12), transparent 60%),
            radial-gradient(380px 240px at 86% 90%, rgba(122, 92, 255, 0.14), transparent 60%),
            linear-gradient(180deg, #0A142C 0%, #070C1A 100%);
        overflow: hidden;
        padding: 74px 0 88px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }
    .category-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background-image:
            linear-gradient(rgba(22, 216, 245, 0.03) 1px, transparent 1px),
            linear-gradient(90deg, rgba(22, 216, 245, 0.03) 1px, transparent 1px);
        background-size: 42px 42px;
        pointer-events: none;
    }
    .category-hero::after {
        content: "安全指引";
        position: absolute;
        right: -20px;
        top: 24px;
        font-size: 120px;
        font-weight: 800;
        line-height: 1;
        color: rgba(255, 255, 255, 0.025);
        letter-spacing: 4px;
        pointer-events: none;
        white-space: nowrap;
        user-select: none;
        z-index: 0;
    }
    .category-hero .container {
        position: relative;
        z-index: 2;
    }
    .breadcrumb-module {
        font-size: 13px;
        color: var(--text-sub);
        margin-bottom: 30px;
        letter-spacing: .3px;
    }
    .breadcrumb-module a {
        color: inherit;
        position: relative;
        margin-right: 12px;
    }
    .breadcrumb-module a:hover {
        color: var(--brand-cyan);
    }
    .breadcrumb-module span {
        color: #fff;
        margin-left: 4px;
    }
    .breadcrumb-module .slash {
        color: rgba(255, 255, 255, 0.35);
        margin-left: 12px;
        margin-right: 2px;
    }
    .category-hero h1 {
        font-size: clamp(30px, 3.6vw, 44px);
        font-weight: 800;
        line-height: 1.32;
        margin: 0 0 22px;
        letter-spacing: .5px;
    }
    .category-hero h1 .gradient-text {
        background: linear-gradient(120deg, #3086FF 0%, #16D8F5 60%, #A8EAFF 100%);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }
    .category-hero .lead-safe {
        font-size: 17px;
        color: rgba(234, 242, 255, .6);
        line-height: 1.9;
        max-width: 760px;
        margin: 0 0 34px;
    }
    .hero-data {
        display: flex;
        flex-wrap: wrap;
        gap: 26px;
        margin: 34px 0 0;
    }
    .hero-data .item {
        border-left: 2px solid rgba(22, 216, 245, .2);
        padding-left: 16px;
    }
    .hero-data .num {
        font-size: 30px;
        font-weight: 800;
        color: var(--brand-cyan);
        line-height: 1.2;
    }
    .hero-data .label {
        font-size: 13px;
        color: var(--text-sub);
        margin-top: 4px;
        letter-spacing: .5px;
    }
    .hero-guide-card {
        border-radius: 22px;
        background: rgba(255, 255, 255, 0.055);
        backdrop-filter: blur(18px);
        border: 1px solid rgba(255, 255, 255, 0.12);
        padding: 26px 28px;
        position: relative;
        overflow: hidden;
        box-shadow: 0 16px 45px rgba(0, 0, 0, 0.3);
        margin-top: 18px;
    }
    .hero-guide-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, rgba(22, 216, 245, .5), transparent 80%);
    }
    .hero-guide-card .card-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(22, 216, 245, 0.1);
        border: 1px solid rgba(22, 216, 245, 0.2);
        color: var(--brand-cyan);
        padding: 5px 14px;
        border-radius: 50px;
        font-size: 12px;
        font-weight: 600;
        letter-spacing: .4px;
        margin-bottom: 16px;
    }
    .hero-guide-card h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 12px;
        line-height: 1.5;
    }
    .hero-guide-card p {
        color: var(--text-sub);
        font-size: 14px;
        margin: 0;
        line-height: 1.8;
    }
    .btn {
        border-radius: 50px;
        padding: 12px 28px;
        font-size: 15px;
        font-weight: 600;
        border: 0;
        transition: all .25s ease;
    }
    .btn:focus,
    .btn-ghost:focus,
    .nav-vip-btn:focus,
    .accordion-button:focus {
        outline: 2px solid var(--brand-blue);
        outline-offset: 3px;
    }
    .btn-primary-custom {
        background: var(--btn-grad);
        color: #fff;
        box-shadow: 0 0 22px rgba(22, 216, 245, .22);
    }
    .btn-primary-custom:hover {
        transform: translateY(-2px);
        box-shadow: 0 0 32px rgba(22, 216, 245, .4);
        color: #fff;
    }
    .btn-ghost {
        background: rgba(255, 255, 255, .04);
        border: 1px solid rgba(255, 255, 255, .18);
        color: rgba(234, 242, 255, .85);
    }
    .btn-ghost:hover {
        background: rgba(255, 255, 255, .1);
        border-color: rgba(22, 216, 245, .4);
        color: #fff;
    }
    .section-head {
        margin-bottom: 44px;
    }
    .section-mark {
        color: var(--brand-cyan);
        text-transform: uppercase;
        letter-spacing: 4px;
        font-size: 12px;
        display: block;
        font-weight: 600;
        margin-bottom: 8px;
    }
    .section-title {
        margin: 0 0 16px;
        font-weight: 700;
        font-size: clamp(24px, 2.4vw, 32px);
        line-height: 1.4;
    }
    .section-title-line {
        width: 64px;
        height: 3px;
        border-radius: 3px;
        background: linear-gradient(90deg, rgba(22, 216, 245, .9), transparent);
    }
    .security-features {
        background: #0A1124;
        position: relative;
    }
    .security-features::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: rgba(255, 255, 255, .04);
    }
    .feature-card {
        background: rgba(255, 255, 255, 0.05);
        border: 1px solid rgba(255, 255, 255, 0.1);
        border-radius: 20px;
        padding: 30px 24px;
        height: 100%;
        position: relative;
        overflow: hidden;
        transition: transform .3s ease, background .3s ease;
    }
    .feature-card::before {
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(22, 216, 245, .45), transparent);
        opacity: 0;
        transition: opacity .3s;
    }
    .feature-card:hover {
        background: rgba(255, 255, 255, 0.08);
        transform: translateY(-4px);
    }
    .feature-card:hover::before {
        opacity: 1;
    }
    .feature-icon {
        width: 48px;
        height: 48px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        border-radius: 14px;
        background: rgba(22, 216, 245, 0.1);
        border: 1px solid rgba(22, 216, 245, .2);
        color: var(--brand-cyan);
        font-size: 20px;
        margin-bottom: 20px;
    }
    .feature-card h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 12px;
    }
    .feature-card p {
        color: var(--text-sub);
        font-size: 14px;
        margin: 0;
        line-height: 1.85;
    }
    .guide-steps-section {
        background: #070C1A;
    }
    .step-card {
        position: relative;
        height: 100%;
        padding: 24px;
    }
    .step-num {
        font-size: 14px;
        letter-spacing: 1px;
        color: var(--brand-cyan);
        font-weight: 600;
        margin-bottom: 8px;
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    .step-num .line {
        flex: 1;
        height: 1px;
        background: linear-gradient(90deg, rgba(22, 216, 245, .2), transparent);
        margin-left: 14px;
    }
    .step-card h3 {
        font-size: 18px;
        font-weight: 700;
        margin-bottom: 12px;
    }
    .step-card p {
        color: var(--text-sub);
        font-size: 14px;
        line-height: 1.8;
        margin: 0;
    }
    .divide-line {
        height: 1px;
        background: rgba(255, 255, 255, .08);
        margin: 10px 0 0;
    }
    .check-grid {
        background: #0A1124;
        border-top: 1px solid rgba(255, 255, 255, .05);
        border-bottom: 1px solid rgba(255, 255, 255, .05);
    }
    .check-cell {
        background: rgba(255, 255, 255, .045);
        border: 1px solid rgba(255, 255, 255, .1);
        border-radius: 18px;
        padding: 26px 22px;
        height: 100%;
        position: relative;
        transition: border-color .25s ease, background .25s ease;
    }
    .check-cell:hover {
        border-color: rgba(22, 216, 245, .3);
        background: rgba(255, 255, 255, .065);
    }
    .check-icon {
        color: var(--brand-cyan);
        font-size: 22px;
        width: 40px;
        height: 40px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(22, 216, 245, .08);
        border-radius: 12px;
        margin-bottom: 16px;
        border: 1px solid rgba(22, 216, 245, .15);
    }
    .check-cell .cell-title {
        font-weight: 700;
        font-size: 17px;
        margin-bottom: 8px;
    }
    .check-cell p {
        color: var(--text-sub);
        font-size: 14px;
        line-height: 1.8;
    }
    .guide-list-row {
        border-bottom: 1px solid rgba(255, 255, 255, .09);
        padding: 24px 0;
        display: flex;
        align-items: flex-start;
        gap: 20px;
        transition: all .2s ease;
    }
    .guide-list-row:first-child {
        padding-top: 0;
    }
    .guide-list-row .index {
        font-size: 15px;
        color: var(--brand-cyan);
        font-weight: 700;
        min-width: 40px;
        line-height: 1.8;
    }
    .guide-list-row h3 {
        font-size: 19px;
        font-weight: 700;
        margin: 0 0 8px;
        line-height: 1.5;
    }
    .guide-list-row p {
        color: var(--text-sub);
        font-size: 15px;
        line-height: 1.85;
        margin: 0;
    }
    .side-panel {
        background: rgba(255, 255, 255, .05);
        border: 1px solid rgba(255, 255, 255, .1);
        border-radius: 20px;
        padding: 22px;
        height: 100%;
    }
    .side-panel-title {
        font-size: 16px;
        font-weight: 700;
        margin-bottom: 18px;
        padding-bottom: 12px;
        border-bottom: 1px solid rgba(255, 255, 255, .09);
    }
    .tag-cloud {
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
        margin-bottom: 24px;
    }
    .tag-cloud span {
        font-size: 13px;
        background: rgba(255, 255, 255, .05);
        border: 1px solid rgba(255, 255, 255, .1);
        color: var(--text-sub);
        border-radius: 50px;
        padding: 6px 14px;
        cursor: default;
        transition: all .2s ease;
    }
    .tag-cloud span:hover {
        color: #fff;
        background: rgba(22, 216, 245, .1);
        border-color: rgba(22, 216, 245, .3);
    }
    .tag-cloud .hot-tag {
        color: var(--brand-cyan);
        border-color: rgba(22, 216, 245, .35);
        font-size: 15px;
        font-weight: 600;
    }
    .side-card-note {
        border-radius: 16px;
        overflow: hidden;
        background: linear-gradient(145deg, #0A1227, #111A38);
        border: 1px solid rgba(255, 255, 255, .1);
        min-height: 120px;
        display: flex;
        flex-direction: column;
        justify-content: flex-end;
        padding: 20px;
        background-image: url('/assets/images/coverpic/cover-8.png');
        background-position: center;
        background-size: cover;
        position: relative;
    }
    .side-card-note::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(180deg, rgba(7, 12, 26, .15), rgba(7, 12, 26, .9));
        border-radius: inherit;
    }
    .side-card-note p,
    .side-card-note a {
        position: relative;
        z-index: 1;
        margin: 0;
        color: #fff;
        font-size: 13px;
    }
    .side-card-note a {
        margin-top: 10px;
        font-weight: 600;
        color: var(--brand-cyan);
    }
    .faq-area {
        background: #070C1A;
    }
    .faq-left-sticky {
        position: sticky;
        top: 90px;
    }
    .faq-list .faq-item {
        background: rgba(255, 255, 255, .04);
        border: 1px solid rgba(255, 255, 255, .09);
        border-radius: 16px;
        padding: 0;
        margin-bottom: 12px;
        overflow: hidden;
        transition: background .25s ease, border-color .25s ease;
    }
    .faq-item details {
        padding: 0;
    }
    .faq-item summary {
        list-style: none;
        cursor: pointer;
        display: flex;
        align-items: center;
        gap: 12px;
        padding: 20px 22px;
        font-weight: 600;
        color: var(--text-main);
        font-size: 16px;
        line-height: 1.5;
        user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
        display: none;
    }
    .faq-q {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-width: 28px;
        height: 28px;
        border-radius: 50%;
        background: rgba(22, 216, 245, .12);
        color: var(--brand-cyan);
        font-size: 13px;
        font-weight: 700;
        flex-shrink: 0;
    }
    .faq-item .faq-answer {
        padding: 0 24px 20px 62px;
        color: var(--text-sub);
        font-size: 14px;
        line-height: 1.85;
    }
    .faq-item .chevron {
        margin-left: auto;
        color: rgba(255, 255, 255, .5);
        font-size: 13px;
        transition: transform .25s ease;
    }
    .faq-item[open] {
        background: rgba(255, 255, 255, .07);
        border-color: rgba(22, 216, 245, .25);
        box-shadow: 4px 0 0 -2px rgba(22, 216, 245, .4) inset;
    }
    .faq-item[open] .chevron {
        transform: rotate(180deg);
    }
    .cta-banner-section {
        background: transparent;
        padding: 80px 0 95px;
        position: relative;
    }
    .cta-banner {
        position: relative;
        overflow: hidden;
        border-radius: 28px;
        background-color: #0A1329;
        border: 1px solid rgba(22, 216, 245, .2);
        padding: 64px 36px;
        text-align: center;
        background-image: url('/assets/images/backpic/back-2.webp');
        background-position: center;
        background-size: cover;
        background-blend-mode: multiply;
    }
    .cta-banner::before {
        content: "";
        position: absolute;
        inset: 0;
        background: radial-gradient(480px 180px at 50% 0%, rgba(22, 216, 245, .2), transparent 70%),
            linear-gradient(135deg, rgba(5, 8, 18, .94), rgba(8, 14, 30, .82));
        border-radius: 28px;
        pointer-events: none;
    }
    .cta-banner .cta-content {
        position: relative;
        z-index: 1;
    }
    .cta-banner h2 {
        font-size: clamp(24px, 3vw, 38px);
        font-weight: 800;
        margin-bottom: 14px;
        letter-spacing: .5px;
    }
    .cta-banner h2 .cyan {
        color: var(--brand-cyan) !important;
    }
    .cta-banner p {
        color: rgba(234, 242, 255, .65);
        font-size: 16px;
        margin-bottom: 28px;
        max-width: 600px;
        margin-left: auto;
        margin-right: auto;
        line-height: 1.8;
    }
    .cta-banner .btn {
        padding: 15px 42px;
        font-size: 17px;
    }
    .site-footer {
        background: #050812;
        color: #a9b7d0;
        padding: 72px 0 30px;
        position: relative;
    }
    .site-footer::before {
        content: "";
        position: absolute;
        top: 0;
        height: 1px;
        background: linear-gradient(90deg,
                transparent, rgba(22, 216, 245, .6), transparent);
        left: 0;
        right: 0;
    }
    .footer-brand {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 14px;
    }
    .footer-brand .icon {
        width: 36px;
        height: 36px;
        display: flex;
        align-items: center;
        justify-content: center;
        border-radius: 10px;
        background: rgba(22, 216, 245, .1);
        border: 1px solid rgba(22, 216, 245, .25);
        color: var(--brand-cyan);
        font-size: 16px;
    }
    .footer-brand .name {
        font-size: 19px;
        font-weight: 800;
        color: #fff;
        letter-spacing: .4px;
    }
    .footer-desc {
        color: #6d85a8;
        font-size: 14px;
        max-width: 360px;
        line-height: 1.85;
        margin-bottom: 0;
    }
    .footer-subtitle {
        font-size: 14px;
        font-weight: 700;
        color: #ffffff;
        margin-bottom: 18px;
        position: relative;
        display: inline-block;
    }
    .footer-subtitle::after {
        content: "";
        display: block;
        width: 42px;
        height: 2px;
        background: var(--brand-cyan);
        margin: 7px 0 0;
        border-radius: 2px;
        opacity: .6;
    }
    .footer-links {
        list-style: none;
        padding: 0;
        margin: 0;
    }
    .footer-links li {
        margin-bottom: 10px;
    }
    .footer-links a {
        font-size: 14px;
        color: #8ba0bd;
        transition: color .2s ease, padding-left .2s ease;
    }
    .footer-links a:hover {
        color: var(--brand-cyan);
        padding-left: 5px;
    }
    .copyright-row {
        border-top: 1px solid rgba(255, 255, 255, .07);
        margin-top: 48px;
        padding-top: 24px;
        color: #607693;
        font-size: 13px;
    }
    @media (max-width: 991.98px) {
        .category-hero {
            padding: 48px 0 60px;
        }
        .category-hero::after {
            font-size: 70px;
            right: 0;
            top: 40px;
        }
        .hero-guide-card {
            margin-top: 36px;
        }
        .section-gap {
            padding: 70px 0;
        }
        .cta-banner {
            padding: 48px 24px;
        }
        .faq-left-sticky {
            position: static;
            margin-bottom: 32px;
        }
    }
    @media (max-width: 767.98px) {
        .container {
            padding-left: 20px;
            padding-right: 20px;
        }
        .category-hero {
            padding: 40px 0 56px;
        }
        .category-hero h1 {
            font-size: 27px;
        }
        .category-hero .lead-safe {
            font-size: 15px;
        }
        .hero-data {
            gap: 16px;
        }
        .hero-data .item {
            min-width: 130px;
        }
        .hero-data .num {
            font-size: 24px;
        }
        .section-gap {
            padding: 58px 0;
        }
        .section-title {
            font-size: 22px;
        }
        .guide-list-row {
            flex-direction: column;
            gap: 4px;
        }
        .faq-item summary {
            padding: 16px;
            font-size: 15px;
        }
        .faq-item .faq-answer {
            padding: 0 16px 18px 46px;
        }
        .cta-banner h2 {
            font-size: 23px;
        }
        .cta-banner {
            padding: 42px 18px;
        }
        .copyright-row {
            flex-direction: column;
            gap: 8px;
            text-align: center;
        }
    }