/* roulang page: index */
:root {
            --bg: #0B0B0F;
            --bg-alt: #0E0E14;
            --card: #14141A;
            --input: #1C1C24;
            --primary: #00FFC8;
            --secondary: #9D5CFF;
            --accent: #FF2D78;
            --gold: #D4AF37;
            --text: #F2F2F7;
            --text-secondary: #A6A6B3;
            --text-muted: #6B6B78;
            --border: rgba(255, 255, 255, 0.08);
            --glow-primary: 0 0 18px rgba(0, 255, 200, 0.28);
            --glow-secondary: 0 0 18px rgba(157, 92, 255, 0.24);
            --radius-card: 12px;
            --radius-small: 6px;
            --radius-img: 16px;
            --radius-btn: 999px;
            --font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg);
            color: var(--text);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            height: auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .25s ease-in-out;
        }
        a:hover {
            color: #fff;
        }
        button,
        input {
            font-family: inherit;
        }
        ::selection {
            background: rgba(0, 255, 200, .25);
        }
        .container {
            max-width: 1200px;
        }
        .section {
            padding: clamp(64px, 8vw, 96px) 0;
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-head {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 48px;
        }
        .section-title {
            font-size: clamp(1.8rem, 3vw, 2.2rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.02em;
            margin-bottom: 12px;
        }
        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1rem;
        }
        .section-line {
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 99px;
            margin: 16px auto 0;
            animation: lineGlow 3s ease-in-out infinite alternate;
        }
        @keyframes lineGlow {
            0% {
                opacity: .6;
                transform: scaleX(.8);
            }
            100% {
                opacity: 1;
                transform: scaleX(1.1);
            }
        }
        .btn {
            border-radius: var(--radius-btn);
            padding: .6rem 1.4rem;
            font-weight: 600;
            transition: all .25s ease-in-out;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            border: 1px solid transparent;
        }
        .btn-primary {
            background: var(--primary);
            color: #0B0B0F;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary);
            color: #0B0B0F;
            box-shadow: var(--glow-primary);
            transform: translateY(-2px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline-primary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline-primary:hover {
            background: rgba(0, 255, 200, 0.08);
            color: var(--primary);
        }
        .btn-outline-primary:active {
            background: rgba(0, 255, 200, 0.14);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 1rem;
        }
        .btn-sm {
            padding: .45rem 1.2rem;
            font-size: .875rem;
        }
        a:focus-visible,
        button:focus-visible,
        .accordion-button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: none;
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation: none !important;
                transition: none !important;
            }
            html {
                scroll-behavior: auto;
            }
        }

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 11, 15, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .site-header::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
            box-shadow: 0 0 12px rgba(0, 255, 200, 0.35);
            z-index: 1;
        }
        .navbar {
            min-height: 68px;
            padding: 0;
        }
        .navbar-brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.01em;
        }
        .navbar-brand:hover {
            color: var(--text);
        }
        .brand-icon {
            width: 32px;
            height: 32px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: rgba(0, 255, 200, 0.08);
            color: var(--primary);
            font-size: 1.1rem;
            animation: iconPulse 2.5s ease-in-out infinite;
        }
        @keyframes iconPulse {
            0%,
            100% {
                box-shadow: 0 0 6px rgba(0, 255, 200, 0.2);
            }
            50% {
                box-shadow: 0 0 16px rgba(0, 255, 200, 0.5);
            }
        }
        .brand-sub {
            color: var(--text-muted);
            font-weight: 400;
            font-size: .8rem;
            margin-left: 2px;
        }
        .navbar-nav {
            margin-left: 32px;
        }
        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            font-size: .95rem;
            padding: 1rem 1rem !important;
            position: relative;
            transition: color .25s ease;
        }
        .nav-link:hover {
            color: #fff !important;
        }
        .nav-link.active {
            color: var(--primary) !important;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 12px;
            right: 12px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            box-shadow: var(--glow-primary);
            animation: activeGlow 2s ease-in-out infinite alternate;
        }
        @keyframes activeGlow {
            0% {
                opacity: .7;
            }
            100% {
                opacity: 1;
            }
        }
        .btn-nav {
            margin-left: 16px;
            white-space: nowrap;
        }
        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 6px 10px;
            color: var(--text);
        }
        .navbar-toggler:focus {
            box-shadow: 0 0 0 2px var(--primary);
        }
        .navbar-toggler .bi-list {
            font-size: 1.4rem;
            color: var(--text);
            line-height: 1;
        }

        /* ========== Hero ========== */
        .hero {
            position: relative;
            padding: clamp(72px, 10vw, 120px) 0;
            overflow: hidden;
            background-color: var(--bg);
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center 30%;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 11, 15, .88) 45%, var(--bg) 100%);
        }
        .hero-inner {
            position: relative;
            z-index: 1;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 255, 200, .08);
            border: 1px solid rgba(0, 255, 200, .25);
            color: var(--primary);
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .02em;
            margin-bottom: 24px;
            animation: fadeUp .5s ease-out both;
        }
        .hero h1 {
            font-size: clamp(2.4rem, 5vw, 3.6rem);
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 0;
            color: var(--text);
            animation: fadeUp .6s ease-out both;
        }
        .hero h1 span {
            color: var(--primary);
            text-shadow: var(--glow-primary);
        }
        .hero-line {
            width: 80px;
            height: 3px;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent));
            background-size: 200% 100%;
            margin: 24px 0;
            animation: gradientSlide 4s linear infinite;
        }
        @keyframes gradientSlide {
            0% {
                background-position: 0% 50%;
            }
            100% {
                background-position: 200% 50%;
            }
        }
        .hero .lead {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.9;
            max-width: 520px;
            margin-bottom: 32px;
            animation: fadeUp .6s ease-out .1s both;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            animation: fadeUp .6s ease-out .2s both;
        }
        .hero-img {
            position: relative;
            border-radius: var(--radius-img);
            overflow: hidden;
            border: 1px solid var(--border);
            animation: fadeUp .8s ease-out .15s both;
        }
        .hero-img::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-img);
            background: linear-gradient(135deg, rgba(0, 255, 200, .12), transparent 40%);
            pointer-events: none;
        }
        .hero-img img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            display: block;
        }
        .hero-img::after {
            content: '';
            position: absolute;
            top: -2px;
            right: -2px;
            width: 80px;
            height: 80px;
            border-top: 3px solid var(--primary);
            border-right: 3px solid var(--primary);
            border-radius: 0 var(--radius-img) 0 0;
            box-shadow: var(--glow-primary);
        }
        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        @media (min-width: 992px) {
            .hero .row {
                min-height: 520px;
                align-items: center;
            }
        }

        /* ========== Plans Table ========== */
        .table-responsive-custom {
            border-radius: var(--radius-card);
            overflow-x: auto;
            border: 1px solid var(--border);
            background: var(--card);
        }
        .table-plans {
            width: 100%;
            min-width: 720px;
            border-collapse: separate;
            border-spacing: 0;
            margin: 0;
            color: var(--text);
        }
        .table-plans thead th {
            background: var(--bg-alt);
            padding: 20px 16px;
            font-weight: 700;
            font-size: .95rem;
            text-align: center;
            border-bottom: 1px solid var(--border);
            color: var(--text);
        }
        .table-plans thead th:first-child {
            text-align: left;
            padding-left: 24px;
            font-size: .85rem;
            color: var(--text-muted);
            font-weight: 400;
        }
        .table-plans td {
            padding: 16px;
            text-align: center;
            border-bottom: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: .9rem;
        }
        .table-plans td:first-child {
            text-align: left;
            padding-left: 24px;
            color: var(--text);
            font-weight: 500;
        }
        .table-plans tr:last-child td {
            border-bottom: none;
        }
        .table-plans .plan-name {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
            font-size: 1rem;
            font-weight: 700;
        }
        .table-plans .plan-name .plan-icon {
            font-size: 1.3rem;
            color: var(--text-muted);
        }
        .table-plans .plan-name.free .plan-icon {
            color: var(--text-muted);
        }
        .table-plans .plan-name.silver .plan-icon {
            color: #C0C0C8;
        }
        .table-plans .plan-name.gold .plan-icon {
            color: var(--gold);
        }
        .table-plans .plan-name.platinum .plan-icon {
            color: var(--secondary);
        }
        .check-icon {
            color: var(--primary);
            font-size: 1.1rem;
        }
        .x-icon {
            color: var(--text-muted);
            font-size: 1.1rem;
            opacity: .5;
        }
        .col-recommend {
            background: rgba(0, 255, 200, 0.04);
            box-shadow: inset 0 0 30px rgba(0, 255, 200, 0.05);
            border-left: 1px solid var(--primary);
            border-right: 1px solid var(--primary);
        }
        .col-recommend thead th {
            border-top: 2px solid var(--primary);
        }
        .recommend-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(212, 175, 55, .12);
            border: 1px solid rgba(212, 175, 55, .4);
            color: var(--gold) !important;
            font-size: .75rem !important;
            font-weight: 700;
            vertical-align: middle;
        }
        .scroll-hint {
            display: none;
            font-size: .8rem;
            color: var(--text-muted);
            text-align: center;
            margin-top: 12px;
        }
        @media (max-width: 767.98px) {
            .scroll-hint {
                display: block;
            }
        }

        /* ========== Ladder ========== */
        .ladder-path {
            display: flex;
            gap: 16px;
            position: relative;
            padding-top: 50px;
        }
        .ladder-path::before {
            content: '';
            position: absolute;
            top: 30px;
            left: 5%;
            right: 5%;
            height: 2px;
            background: repeating-linear-gradient(90deg, var(--primary) 0 8px, transparent 8px 16px);
            opacity: .35;
        }
        .ladder-node {
            flex: 1;
            text-align: center;
            position: relative;
            z-index: 1;
            transition: transform .3s ease;
        }
        .ladder-node:hover {
            transform: translateY(-4px);
        }
        .node-icon {
            width: 60px;
            height: 60px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--card);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--text-secondary);
            transition: all .3s ease;
        }
        .node-title {
            font-weight: 700;
            font-size: .95rem;
            margin-bottom: 4px;
        }
        .node-desc {
            font-size: .8rem;
            color: var(--text-secondary);
            line-height: 1.6;
            padding: 0 6px;
        }
        .ladder-node.featured {
            transform: scale(1.06);
        }
        .ladder-node.featured .node-icon {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: 0 0 24px rgba(0, 255, 200, .35);
        }
        .ladder-node.featured .node-title {
            color: var(--primary);
        }
        .ladder-node.featured .node-desc {
            color: var(--text);
        }
        .node-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(212, 175, 55, .1);
            border: 1px solid rgba(212, 175, 55, .35);
            color: var(--gold);
            font-size: .7rem;
            font-weight: 700;
            margin-top: 8px;
        }
        @media (max-width: 767.98px) {
            .ladder-path {
                flex-direction: column;
                gap: 0;
                padding-left: 34px;
                padding-top: 0;
            }
            .ladder-path::before {
                left: 15px;
                right: auto;
                top: 30px;
                bottom: 30px;
                width: 2px;
                height: auto;
                background: repeating-linear-gradient(180deg, var(--primary) 0 8px, transparent 8px 16px);
            }
            .ladder-node {
                display: flex;
                gap: 20px;
                text-align: left;
                margin-bottom: 32px;
            }
            .ladder-node .node-icon {
                margin: 0;
                flex-shrink: 0;
            }
            .ladder-node-info {
                padding-top: 4px;
            }
            .ladder-node.featured {
                transform: none;
            }
        }

        /* ========== Exclusive ========== */
        .exclusive-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 24px;
            align-items: start;
        }
        .exclusive-card {
            position: relative;
            border-radius: var(--radius-img);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: border-color .25s ease, box-shadow .25s ease;
        }
        .exclusive-card:hover {
            border-color: rgba(0, 255, 200, .4);
            box-shadow: var(--glow-primary);
        }
        .exclusive-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }
        .exclusive-left .exclusive-card {
            height: 320px;
        }
        .exclusive-right {
            display: grid;
            grid-template-rows: 1fr 1fr;
            gap: 24px;
            height: 320px;
        }
        .exclusive-right .exclusive-card {
            height: 148px;
        }
        .exclusive-card img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .badge-premium {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 5;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(11, 11, 15, .7);
            border: 1px solid rgba(255, 45, 120, .5);
            color: var(--accent);
            font-size: .75rem;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .unlock-overlay {
            position: absolute;
            inset: 0;
            background: rgba(11, 11, 15, .5);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 8px;
            transition: background .25s ease;
            z-index: 2;
        }
        .unlock-overlay .bi-lock {
            font-size: 28px;
            color: var(--text-secondary);
            transition: color .25s ease;
        }
        .unlock-text {
            font-size: .8rem;
            color: var(--text);
            opacity: 0;
            transform: translateY(6px);
            transition: opacity .25s ease, transform .25s ease;
            font-weight: 600;
        }
        .unlock-overlay:hover {
            background: rgba(11, 11, 15, .72);
        }
        .unlock-overlay:hover .bi-lock {
            color: var(--primary);
        }
        .unlock-overlay:hover .unlock-text {
            opacity: 1;
            transform: translateY(0);
        }
        .tag-unlocked {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 5;
            padding: 4px 12px;
            border-radius: 999px;
            background: rgba(0, 255, 200, .1);
            border: 1px solid rgba(0, 255, 200, .4);
            color: var(--primary);
            font-size: .75rem;
            font-weight: 600;
        }
        @media (max-width: 991.98px) {
            .exclusive-grid {
                grid-template-columns: 1fr;
            }
            .exclusive-left .exclusive-card {
                height: 240px;
            }
            .exclusive-right {
                grid-template-columns: 1fr 1fr;
                grid-template-rows: none;
                height: auto;
            }
            .exclusive-right .exclusive-card {
                height: 160px;
            }
        }
        @media (max-width: 575.98px) {
            .exclusive-right {
                grid-template-columns: 1fr;
            }
            .exclusive-right .exclusive-card {
                height: 140px;
            }
        }

        /* ========== News List ========== */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .list-card {
            display: flex;
            align-items: stretch;
            gap: 20px;
            padding: 16px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
        }
        .list-card:hover {
            transform: translateY(-4px);
            border-color: rgba(0, 255, 200, .35);
            box-shadow: var(--glow-primary);
        }
        .news-thumb {
            width: 160px;
            height: 100px;
            flex-shrink: 0;
            border-radius: 8px;
            overflow: hidden;
            background: linear-gradient(135deg, var(--input), var(--bg));
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-body {
            flex: 1;
            min-width: 0;
        }
        .news-body h3 {
            font-size: 1rem;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 6px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            color: var(--text);
            transition: color .2s;
        }
        .list-card:hover .news-body h3 {
            color: var(--primary);
        }
        .news-body p {
            font-size: .875rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 10px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .news-tag {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 999px;
            border: 1px solid rgba(0, 255, 200, .35);
            color: var(--primary);
            font-size: .75rem;
            font-weight: 500;
        }
        .news-date {
            font-size: .75rem;
            color: var(--text-muted);
        }
        .empty-state {
            text-align: center;
            padding: 60px 24px;
            background: var(--card);
            border: 1px dashed var(--border);
            border-radius: var(--radius-card);
        }
        .empty-state .bi-inbox {
            font-size: 3rem;
            color: var(--text-muted);
            display: block;
            margin-bottom: 12px;
        }
        .empty-state p {
            color: var(--text-secondary);
            margin-bottom: 16px;
        }
        @media (max-width: 575.98px) {
            .list-card {
                flex-direction: column;
                gap: 12px;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
        }

        /* ========== FAQ ========== */
        .accordion {
            max-width: 820px;
            margin: 0 auto;
        }
        .accordion-item {
            background: transparent;
            border: 1px solid var(--border) !important;
            border-radius: var(--radius-card) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-button {
            background: var(--bg);
            color: var(--text);
            font-weight: 600;
            font-size: .95rem;
            padding: 18px 20px;
            padding-left: 24px;
            border-left: 4px solid var(--primary);
            transition: background .25s ease, color .25s ease;
        }
        .accordion-button::after {
            background-image: none;
            content: '+';
            font-family: var(--font-family);
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--primary);
            width: auto;
            height: auto;
            transition: transform .3s ease;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
        }
        .accordion-button:not(.collapsed) {
            background: var(--card);
            color: var(--text);
            box-shadow: none;
            border-left-color: var(--primary);
        }
        .accordion-button:hover {
            color: var(--primary);
        }
        .accordion-body {
            background: var(--card);
            color: var(--text-secondary);
            font-size: .9rem;
            line-height: 1.8;
            padding: 0 24px 24px;
            border-left: 4px solid rgba(0, 255, 200, .3);
        }

        /* ========== CTA ========== */
        .cta-section {
            position: relative;
            padding: clamp(80px, 10vw, 120px) 0;
            background: url('/assets/images/backpic/back-3.webp') center center / cover no-repeat;
            text-align: center;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 11, 15, .88);
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 640px;
            margin: 0 auto;
            padding: 0 16px;
        }
        .cta-title {
            font-size: clamp(1.8rem, 3.5vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .cta-sub {
            color: var(--text-secondary);
            font-size: 1rem;
            margin-bottom: 36px;
            line-height: 1.9;
        }
        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }
        .cta-note {
            font-size: .8rem;
            color: var(--text-muted);
        }
        @media (max-width: 575.98px) {
            .cta-actions .btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-alt);
            border-top: 2px solid;
            border-image: linear-gradient(90deg, var(--primary), var(--secondary), var(--accent)) 1;
            padding: 64px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
        }
        .footer-brand .brand-icon {
            width: 28px;
            height: 28px;
            font-size: .9rem;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: .875rem;
            line-height: 1.8;
            max-width: 280px;
        }
        .footer-title {
            font-size: .95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-muted);
            font-size: .875rem;
            transition: color .2s, padding-left .2s;
        }
        .footer-links a:hover {
            color: var(--primary);
            padding-left: 4px;
        }
        .footer-contact {
            color: var(--text-muted);
            font-size: .875rem;
            line-height: 2;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 24px 0 28px;
            text-align: center;
            color: var(--text-muted);
            font-size: .825rem;
        }
        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 575.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-desc {
                max-width: 100%;
            }
        }

        /* ========== Responsive Nav ========== */
        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--card);
                border: 1px solid var(--border);
                border-radius: 12px;
                padding: 16px;
                margin-top: 12px;
                margin-bottom: 12px;
                box-shadow: 0 12px 30px rgba(0, 0, 0, .4);
            }
            .navbar-nav {
                margin-left: 0;
            }
            .navbar-nav .nav-link {
                padding: 12px 16px !important;
                border-radius: 8px;
            }
            .navbar-nav .nav-link.active {
                background: rgba(0, 255, 200, .06);
            }
            .navbar-nav .nav-link.active::after {
                left: 4px;
                right: auto;
                width: 3px;
                height: auto;
                bottom: 8px;
                top: 8px;
            }
            .btn-nav {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== Hero responsive ========== */
        @media (max-width: 991.98px) {
            .hero-img {
                margin-top: 40px;
            }
            .hero-img img {
                height: 300px;
            }
        }
        @media (max-width: 575.98px) {
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero h1 {
                font-size: 2.1rem;
            }
        }

/* roulang page: article */
:root{
  --bg:#0B0B0F;
  --bg-alt:#0E0E14;
  --card-bg:#14141A;
  --surface:#1C1C24;
  --primary:#00FFC8;
  --secondary:#9D5CFF;
  --accent:#FF2D78;
  --gold:#D4AF37;
  --text:#F2F2F7;
  --text-secondary:#A6A6B3;
  --text-muted:#6B6B78;
  --border:rgba(255,255,255,0.08);
  --glow-primary:0 0 18px rgba(0,255,200,0.28);
  --glow-secondary:0 0 18px rgba(157,92,255,0.24);
  --radius-card:12px;
  --radius-small:6px;
  --radius-image:16px;
  --radius-pill:999px;
  --transition:0.25s ease-in-out;
  --font-sans:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
}

*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;transition:color var(--transition);}
a:hover{color:var(--primary);}
ul,ol{list-style-position:inside;}
button,input,select,textarea{font-family:var(--font-sans);}
.container{max-width:1200px;margin:0 auto;padding-left:24px;padding-right:24px;}
@media(max-width:575px){
  .container{padding-left:16px;padding-right:16px;}
}

/* ── Header ── */
.site-header{
  position:sticky;top:0;z-index:1050;
  background:rgba(11,11,15,0.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:2px solid transparent;
  background-image:linear-gradient(rgba(11,11,15,0.92),rgba(11,11,15,0.92)),linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));
  background-clip:padding-box,border-box;
  background-origin:padding-box,border-box;
  box-shadow:0 1px 0 rgba(0,255,200,0.08);
}
.site-header .navbar{
  min-height:68px;
  padding-top:0;padding-bottom:0;
}
.navbar-brand{
  display:inline-flex;align-items:center;gap:8px;
  color:var(--text);font-size:1.25rem;font-weight:700;
  letter-spacing:0.02em;padding:10px 0;
}
.navbar-brand:hover{color:var(--text);}
.navbar-brand .brand-icon{
  display:inline-flex;align-items:center;justify-content:center;
  width:30px;height:30px;border-radius:8px;
  background:rgba(0,255,200,0.1);
  border:1px solid rgba(0,255,200,0.35);
  color:var(--primary);
  box-shadow:var(--glow-primary);
}
.navbar-brand .brand-sub{
  color:var(--primary);font-weight:600;font-size:0.9rem;
  margin-left:2px;letter-spacing:0.06em;
}
.navbar-nav{margin-left:24px;gap:4px;}
.navbar-nav .nav-item{position:relative;}
.navbar-nav .nav-link{
  color:var(--text-secondary);
  font-size:0.95rem;font-weight:500;
  padding:10px 14px !important;
  border-radius:var(--radius-small);
  position:relative;
  transition:color var(--transition),text-shadow var(--transition),background var(--transition);
}
.navbar-nav .nav-link::after{
  content:'';position:absolute;left:14px;right:14px;bottom:2px;
  height:2px;border-radius:2px;
  background:var(--primary);
  box-shadow:0 0 8px rgba(0,255,200,0.6);
  opacity:0;transform:scaleX(0.5);
  transition:opacity var(--transition),transform var(--transition);
}
.navbar-nav .nav-link:hover{
  color:var(--text);
  background:rgba(255,255,255,0.04);
}
.navbar-nav .nav-link.active{
  color:var(--primary);
  text-shadow:0 0 10px rgba(0,255,200,0.35);
  background:rgba(0,255,200,0.06);
}
.navbar-nav .nav-link.active::after{
  opacity:1;transform:scaleX(1);
}
.navbar-toggler{
  border:1px solid var(--border);
  border-radius:8px;
  color:var(--text);
  padding:6px 10px;
  background:var(--card-bg);
  font-size:1.2rem;
  line-height:1;
}
.navbar-toggler:focus{
  box-shadow:0 0 0 2px rgba(0,255,200,0.4);
  outline:none;
}
.btn-nav{
  margin-left:16px;
  padding:8px 22px;
  border-radius:var(--radius-pill);
  font-size:0.92rem;
}
@media(max-width:991px){
  .navbar-collapse{
    background:var(--card-bg);
    border:1px solid var(--border);
    border-radius:12px;
    margin-top:10px;
    padding:16px;
  }
  .navbar-nav{margin-left:0;gap:2px;margin-bottom:10px;}
  .navbar-nav .nav-link{border-radius:8px;padding:10px 12px !important;}
  .navbar-nav .nav-link::after{left:12px;right:auto;width:3px;height:auto;top:10px;bottom:10px;transform:scaleY(0.5);}
  .navbar-nav .nav-link.active::after{transform:scaleY(1);}
  .btn-nav{width:100%;margin-left:0;margin-top:4px;text-align:center;}
}

/* ── Buttons ── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:var(--radius-pill);
  font-weight:600;
  border:1px solid transparent;
  transition:all var(--transition);
  padding:10px 28px;
  font-size:0.95rem;
  line-height:1.5;
}
.btn-primary{
  background:var(--primary);
  color:#08130F;
  border-color:var(--primary);
  box-shadow:0 4px 14px rgba(0,255,200,0.2);
}
.btn-primary:hover{
  background:var(--primary);
  color:#08130F;
  transform:translateY(-2px);
  box-shadow:0 6px 22px rgba(0,255,200,0.35);
}
.btn-primary:active{
  transform:translateY(0);
  box-shadow:0 2px 10px rgba(0,255,200,0.25);
}
.btn-primary:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.btn-outline-primary{
  background:transparent;
  color:var(--primary);
  border:1px solid rgba(0,255,200,0.5);
}
.btn-outline-primary:hover{
  background:rgba(0,255,200,0.08);
  color:var(--primary);
  border-color:var(--primary);
  transform:translateY(-2px);
  box-shadow:var(--glow-primary);
}
.btn-outline-primary:active{
  transform:translateY(0);
}
.btn:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
}
.btn-lg{padding:14px 36px;font-size:1rem;}
.btn-sm{padding:8px 22px;font-size:0.9rem;}

/* ── Article Hero ── */
.article-hero-area{
  position:relative;
  padding:60px 0 44px;
  background:
    linear-gradient(rgba(11,11,15,0.9),rgba(11,11,15,0.97)),
    url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
  border-bottom:1px solid var(--border);
}
.article-breadcrumb{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  font-size:0.86rem;color:var(--text-muted);
  margin-bottom:20px;
}
.article-breadcrumb a{
  color:var(--text-muted);
  transition:color var(--transition);
}
.article-breadcrumb a:hover{color:var(--primary);}
.article-breadcrumb i{font-size:0.65rem;color:var(--text-muted);}
.article-breadcrumb .current{
  color:var(--text-secondary);
  max-width:340px;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}
.article-title{
  font-size:clamp(2rem,3vw,2.6rem);
  font-weight:800;
  line-height:1.3;
  letter-spacing:-0.01em;
  color:var(--text);
  margin-bottom:16px;
}
.article-meta{
  display:flex;align-items:center;flex-wrap:wrap;gap:12px;
  font-size:0.85rem;color:var(--text-muted);
}
.article-meta span{display:inline-flex;align-items:center;gap:6px;}
.article-meta i{font-size:0.9rem;color:var(--primary);}
.meta-divider{
  width:4px;height:4px;border-radius:50%;
  background:rgba(255,255,255,0.2);
  display:inline-block;
}

/* ── Article Body ── */
.article-body{
  background:var(--bg);
  padding:56px 0 72px;
}
.article-container{max-width:720px;margin:0 auto;}

.article-content{
  color:var(--text);
  font-size:1rem;
  line-height:1.9;
}
.article-content > p:first-child{
  font-size:1.05rem;
  color:var(--text);
  border-left:4px solid var(--primary);
  padding-left:18px;
  box-shadow:-4px 0 10px rgba(0,255,200,0.08);
  margin-bottom:28px;
}
.article-content h2{
  font-size:1.6rem;
  font-weight:700;
  color:var(--text);
  line-height:1.4;
  margin-top:44px;
  margin-bottom:18px;
  padding-bottom:10px;
  border-bottom:1px solid var(--border);
  position:relative;
}
.article-content h2::before{
  content:'';
  position:absolute;
  left:0;bottom:-1px;
  width:60px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  border-radius:2px;
}
.article-content h3{
  font-size:1.2rem;
  font-weight:600;
  color:var(--text);
  margin-top:32px;
  margin-bottom:14px;
  line-height:1.5;
}
.article-content p{
  margin-bottom:24px;
  color:rgba(242,242,247,0.92);
}
.article-content strong{color:var(--text);font-weight:600;}
.article-content a{
  color:var(--primary);
  border-bottom:1px solid rgba(0,255,200,0.3);
  transition:border-color var(--transition);
}
.article-content a:hover{
  border-bottom-color:var(--primary);
  color:var(--primary);
}
.article-content blockquote{
  margin:28px 0;
  padding:20px 24px;
  border-left:3px solid var(--secondary);
  background:rgba(157,92,255,0.06);
  border-radius:0 12px 12px 0;
  color:var(--text-secondary);
  font-style:normal;
}
.article-content blockquote p{margin-bottom:0;}
.article-content ul,.article-content ol{
  margin:20px 0 24px;
  padding-left:6px;
  color:rgba(242,242,247,0.92);
}
.article-content ul li,.article-content ol li{
  margin-bottom:10px;
  padding-left:6px;
}
.article-content ul li::marker{color:var(--primary);}
.article-content ol li::marker{color:var(--secondary);font-weight:600;}
.article-content img{
  border-radius:var(--radius-image);
  margin:28px 0 10px;
  border:1px solid var(--border);
  box-shadow:0 8px 30px rgba(0,0,0,0.3);
}
.article-content figure{margin:28px 0;}
.article-content figcaption{
  font-size:0.85rem;color:var(--text-muted);
  text-align:center;
  margin-top:10px;
}
.article-content hr{
  border:none;
  height:1px;
  background:var(--border);
  margin:32px 0;
}
.article-content code{
  background:var(--surface);
  color:var(--primary);
  border-radius:4px;
  padding:2px 6px;
  font-size:0.9em;
}
.article-content pre{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:12px;
  padding:18px;
  overflow-x:auto;
  font-size:0.9rem;
  line-height:1.7;
  margin-bottom:24px;
}
.article-content pre code{background:transparent;padding:0;color:inherit;}

/* ── Article Tags ── */
.article-tags{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  margin-top:40px;
  padding-top:24px;
  border-top:1px solid var(--border);
}
.article-tags .tag-label{
  font-size:0.85rem;color:var(--text-muted);
}
.article-tag{
  display:inline-block;
  padding:4px 14px;
  border:1px solid rgba(0,255,200,0.3);
  border-radius:var(--radius-pill);
  color:var(--primary);
  font-size:0.8rem;
  background:rgba(0,255,200,0.04);
  transition:all var(--transition);
}
.article-tag:hover{
  background:rgba(0,255,200,0.1);
  border-color:var(--primary);
  box-shadow:var(--glow-primary);
}

/* ── Article Nav ── */
.article-nav{
  display:flex;align-items:center;justify-content:space-between;
  margin-top:28px;
}
.article-nav .btn{padding:8px 20px;font-size:0.9rem;}
.article-nav .btn i{font-size:0.85rem;}

/* ── Related Section ── */
.related-section{
  margin-top:56px;
  padding-top:40px;
  border-top:1px solid var(--border);
}
.related-section-title{
  font-size:1.4rem;
  font-weight:700;
  color:var(--text);
  margin-bottom:28px;
  display:flex;align-items:center;gap:10px;
}
.related-section-title i{
  color:var(--primary);
  font-size:1.2rem;
}
.related-card{
  display:flex;
  gap:16px;
  align-items:flex-start;
  background:var(--card-bg);
  border:1px solid var(--border);
  border-radius:var(--radius-card);
  padding:16px;
  margin-bottom:16px;
  transition:border-color var(--transition),transform var(--transition),box-shadow var(--transition);
}
.related-card:hover{
  border-color:rgba(0,255,200,0.35);
  transform:translateY(-4px);
  box-shadow:0 8px 24px rgba(0,0,0,0.2),0 0 18px rgba(0,255,200,0.08);
}
.related-thumb{
  flex-shrink:0;
  width:120px;height:90px;
  border-radius:8px;
  overflow:hidden;
  background:linear-gradient(135deg,var(--surface),var(--card-bg));
}
.related-thumb img{
  width:100%;height:100%;
  object-fit:cover;
  transition:transform 0.4s ease;
}
.related-card:hover .related-thumb img{transform:scale(1.05);}
.related-body{flex:1;min-width:0;}
.related-title{
  font-size:1rem;
  font-weight:600;
  color:var(--text);
  line-height:1.5;
  margin-bottom:6px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-title a:hover{color:var(--primary);}
.related-excerpt{
  font-size:0.875rem;
  color:var(--text-secondary);
  line-height:1.6;
  margin-bottom:10px;
  display:-webkit-box;
  -webkit-line-clamp:2;
  -webkit-box-orient:vertical;
  overflow:hidden;
}
.related-meta{
  display:flex;align-items:center;gap:12px;
}
.related-meta .tag{
  display:inline-block;
  padding:2px 10px;
  border:1px solid rgba(0,255,200,0.35);
  border-radius:var(--radius-pill);
  color:var(--primary);
  font-size:0.75rem;
  background:rgba(0,255,200,0.04);
}
.related-meta .date{
  font-size:0.75rem;
  color:var(--text-muted);
}

/* ── Empty State ── */
.article-empty{
  text-align:center;
  padding:80px 24px;
}
.article-empty .empty-icon{
  width:72px;height:72px;
  border-radius:50%;
  margin:0 auto 24px;
  background:rgba(255,255,255,0.05);
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-muted);
  font-size:1.8rem;
}
.article-empty h2{
  font-size:1.5rem;
  font-weight:700;
  margin-bottom:12px;
}
.article-empty p{
  color:var(--text-secondary);
  margin-bottom:28px;
}

/* ── CTA Section ── */
.cta-section{
  position:relative;
  padding:clamp(64px,8vw,96px) 0;
  background:
    linear-gradient(rgba(11,11,15,0.85),rgba(11,11,15,0.95)),
    url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
  text-align:center;
}
.cta-inner{
  max-width:720px;
  margin:0 auto;
  padding:0 24px;
}
.cta-title{
  font-size:clamp(1.8rem,3vw,2.4rem);
  font-weight:800;
  color:var(--text);
  line-height:1.3;
  margin-bottom:20px;
}
.cta-title span{
  color:var(--primary);
  text-shadow:var(--glow-primary);
}
.cta-desc{
  color:var(--text-secondary);
  font-size:1.05rem;
  margin-bottom:36px;
  line-height:1.7;
}
.cta-note{
  margin-top:20px;
  font-size:0.82rem;
  color:var(--text-muted);
}
.cta-note i{
  color:var(--primary);
  margin-right:4px;
}

/* ── Footer ── */
.site-footer{
  background:var(--bg-alt);
  border-top:2px solid transparent;
  background-image:linear-gradient(var(--bg-alt),var(--bg-alt)),linear-gradient(90deg,var(--primary),var(--secondary),var(--accent));
  background-clip:padding-box,border-box;
  background-origin:padding-box,border-box;
  padding:56px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr 1.2fr;
  gap:40px;
  margin-bottom:44px;
}
.footer-brand{
  display:flex;align-items:center;gap:8px;
  font-size:1.2rem;font-weight:700;color:var(--text);
  margin-bottom:16px;
}
.footer-brand .brand-icon{
  width:28px;height:28px;
  display:flex;align-items:center;justify-content:center;
  background:rgba(0,255,200,0.1);
  border:1px solid rgba(0,255,200,0.3);
  border-radius:8px;
  color:var(--primary);
  font-size:0.9rem;
}
.footer-brand .brand-sub{
  color:var(--primary);font-weight:600;font-size:0.85rem;margin-left:2px;
}
.footer-desc{
  color:var(--text-muted);
  font-size:0.9rem;
  line-height:1.7;
  max-width:300px;
}
.footer-title{
  font-size:0.95rem;
  font-weight:600;
  color:var(--text);
  margin-bottom:18px;
  position:relative;
  padding-bottom:8px;
}
.footer-title::after{
  content:'';
  position:absolute;
  left:0;bottom:-2px;
  width:28px;height:2px;
  background:linear-gradient(90deg,var(--primary),var(--secondary));
  border-radius:2px;
}
.footer-links{
  list-style:none;
  padding:0;
  margin:0;
}
.footer-links li{margin-bottom:10px;}
.footer-links a{
  color:var(--text-secondary);
  font-size:0.9rem;
  transition:color var(--transition),padding-left var(--transition);
}
.footer-links a:hover{
  color:var(--primary);
  padding-left:4px;
}
.footer-contact{
  color:var(--text-secondary);
  font-size:0.9rem;
  line-height:2;
}
.footer-contact i{
  color:var(--primary);
  margin-right:8px;
  font-size:0.85rem;
}
.footer-bottom{
  border-top:1px solid var(--border);
  padding-top:24px;
  text-align:center;
  color:var(--text-muted);
  font-size:0.84rem;
}

/* ── Responsive ── */
@media(max-width:991px){
  .footer-grid{
    grid-template-columns:1fr 1fr;
    gap:32px;
  }
}
@media(max-width:767px){
  .article-hero-area{padding:44px 0 36px;}
  .article-body{padding:40px 0 56px;}
  .related-card{flex-direction:row;}
  .related-thumb{width:100px;height:80px;}
}
@media(max-width:575px){
  .article-title{font-size:1.7rem;}
  .article-meta{flex-wrap:wrap;gap:8px 12px;}
  .related-thumb{width:88px;height:72px;}
  .related-title{font-size:0.92rem;}
  .related-excerpt{font-size:0.82rem;}
  .footer-grid{grid-template-columns:1fr;}
  .cta-title{font-size:1.6rem;}
  .btn{width:100%;}
  .article-nav{flex-direction:column;gap:12px;}
  .article-nav .btn{width:100%;}
  .btn-primary,.btn-outline-primary{width:auto;}
  .cta-section .btn{width:auto;}
}

/* ── Reduced Motion ── */
@media(prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
    scroll-behavior:auto !important;
  }
}

/* roulang page: category1 */
:root {
            --bg: #0B0B0F;
            --bg-alt: #0E0E14;
            --card-bg: #14141A;
            --input-bg: #1C1C24;
            --neon-cyan: #00FFC8;
            --neon-purple: #9D5CFF;
            --neon-pink: #FF2D78;
            --gold: #D4AF37;
            --text-primary: #F2F2F7;
            --text-secondary: #A6A6B3;
            --text-muted: #6B6B78;
            --border: rgba(255,255,255,0.08);
            --glow-cyan: 0 0 18px rgba(0,255,200,0.28);
            --glow-purple: 0 0 18px rgba(157,92,255,0.24);
            --radius: 12px;
            --radius-sm: 6px;
            --radius-lg: 16px;
            --radius-btn: 999px;
            --transition: 0.25s ease-in-out;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--text-primary);
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            font-size: 1rem;
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--neon-cyan);
            text-decoration: none;
            transition: color var(--transition);
        }

        a:hover {
            color: #00e6b3;
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            padding-left: 16px;
            padding-right: 16px;
        }

        ::selection {
            background: rgba(0, 255, 200, 0.25);
            color: #fff;
        }

        :focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 2px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(11, 11, 15, 0.9);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

        .site-header::after {
            content: "";
            display: block;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink));
            box-shadow: 0 2px 14px rgba(0, 255, 200, 0.15);
        }

        .navbar {
            min-height: 68px;
            padding-top: 0;
            padding-bottom: 0;
        }

        .navbar-brand {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary) !important;
            letter-spacing: 0.5px;
            padding-top: 0;
            padding-bottom: 0;
        }

        .brand-icon {
            color: var(--neon-cyan);
            font-size: 1.3rem;
            filter: drop-shadow(0 0 6px rgba(0, 255, 200, 0.5));
        }

        .brand-sub {
            font-size: 0.72rem;
            font-weight: 400;
            color: var(--text-secondary);
            margin-left: 2px;
        }

        .navbar-nav {
            align-items: center;
            gap: 4px;
            margin-left: 24px;
        }

        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.55rem 1rem;
            position: relative;
            border-radius: var(--radius-sm);
            transition: color var(--transition), background var(--transition);
        }

        .navbar-nav .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.04);
        }

        .navbar-nav .nav-link.active {
            color: var(--neon-cyan);
        }

        .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 1rem;
            right: 1rem;
            height: 2px;
            border-radius: 2px;
            background: var(--neon-cyan);
            box-shadow: var(--glow-cyan);
            animation: activeBreath 2.4s ease-in-out infinite;
        }

        @keyframes activeBreath {
            0%,
            100% {
                opacity: 0.7;
                box-shadow: 0 0 6px rgba(0, 255, 200, 0.2);
            }
            50% {
                opacity: 1;
                box-shadow: 0 0 14px rgba(0, 255, 200, 0.5);
            }
        }

        .navbar-toggler {
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            padding: 0.25rem 0.5rem;
            background: transparent;
        }

        .navbar-toggler:hover {
            color: var(--neon-cyan);
        }

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

        /* ===== 按钮 ===== */
        .btn {
            border-radius: var(--radius-btn);
            font-weight: 600;
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: var(--neon-cyan);
            color: #0B0B0F;
            border: 1px solid transparent;
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: #00e6b3;
            color: #0B0B0F;
            box-shadow: 0 0 24px rgba(0, 255, 200, 0.4);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(0, 255, 200, 0.25);
        }

        .btn-outline-neon {
            background: transparent;
            border: 1px solid var(--neon-cyan);
            color: var(--neon-cyan);
        }

        .btn-outline-neon:hover,
        .btn-outline-neon:focus {
            background: rgba(0, 255, 200, 0.08);
            color: var(--neon-cyan);
            box-shadow: var(--glow-cyan);
        }

        .btn-nav {
            padding: 0.4rem 1.4rem;
            font-size: 0.88rem;
            margin-left: 12px;
        }

        .btn-lg-neon {
            padding: 0.85rem 2.4rem;
            font-size: 1.05rem;
        }

        /* ===== 分区通用 ===== */
        .section {
            padding: clamp(64px, 8vw, 96px) 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--neon-cyan);
            border: 1px solid rgba(0, 255, 200, 0.35);
            padding: 4px 14px;
            border-radius: var(--radius-btn);
            margin-bottom: 16px;
            letter-spacing: 1px;
            background: rgba(0, 255, 200, 0.04);
        }

        .section-header h2 {
            font-size: clamp(1.6rem, 3vw, 2rem);
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 12px;
        }

        .section-header p {
            color: var(--text-secondary);
            max-width: 640px;
            margin: 0 auto;
            font-size: 0.95rem;
        }

        .neon-line {
            width: 72px;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple));
            margin: 18px auto 0;
            border-radius: 2px;
            position: relative;
            overflow: hidden;
        }

        .neon-line::after {
            content: "";
            position: absolute;
            top: 0;
            left: -40%;
            width: 40%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.7), transparent);
            animation: lineFlow 3s ease-in-out infinite;
        }

        @keyframes lineFlow {
            0% {
                left: -40%;
            }
            50% {
                left: 100%;
            }
            100% {
                left: -40%;
            }
        }

        /* ===== 页面 Hero ===== */
        .page-hero {
            position: relative;
            padding: clamp(80px, 10vw, 120px) 0;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 11, 15, 0.7) 0%, rgba(11, 11, 15, 0.85) 70%, var(--bg) 100%);
        }

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

        .page-hero .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--neon-cyan);
            border: 1px solid rgba(0, 255, 200, 0.3);
            padding: 5px 16px;
            border-radius: var(--radius-btn);
            background: rgba(0, 255, 200, 0.05);
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: clamp(2rem, 4vw, 3rem);
            font-weight: 800;
            line-height: 1.25;
            margin: 0 0 18px;
            max-width: 720px;
        }

        .page-hero h1 .neon-text {
            color: var(--neon-cyan);
            text-shadow: 0 0 18px rgba(0, 255, 200, 0.35);
        }

        .page-hero .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 620px;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        .hero-line {
            width: 100px;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), transparent);
            border-radius: 2px;
            margin-bottom: 28px;
            position: relative;
            overflow: hidden;
        }

        .hero-line::after {
            content: "";
            position: absolute;
            top: 0;
            left: -40%;
            width: 40%;
            height: 100%;
            background: rgba(255, 255, 255, 0.6);
            animation: lineFlow 2.8s ease-in-out infinite;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hero-scroll {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 48px;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .hero-scroll i {
            animation: scrollBounce 1.8s ease-in-out infinite;
        }

        @keyframes scrollBounce {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(6px);
            }
        }

        /* ===== 权益亮点卡片 ===== */
        .perk-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            height: 100%;
            transition: all var(--transition);
        }

        .perk-card:hover {
            border-color: rgba(0, 255, 200, 0.4);
            box-shadow: var(--glow-cyan);
            transform: translateY(-4px);
        }

        .perk-card .perk-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--neon-cyan);
            background: rgba(0, 255, 200, 0.08);
            border: 1px solid rgba(0, 255, 200, 0.2);
            margin-bottom: 18px;
            transition: all var(--transition);
        }

        .perk-card:hover .perk-icon {
            box-shadow: var(--glow-cyan);
            transform: scale(1.06);
        }

        .perk-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin: 0 0 8px;
        }

        .perk-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* ===== 对比区 ===== */
        .compare-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .compare-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            position: relative;
        }

        .compare-image img {
            width: 100%;
            height: 380px;
            object-fit: cover;
        }

        .compare-image .img-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            background: rgba(11, 11, 15, 0.8);
            color: var(--gold);
            border: 1px solid rgba(212, 175, 55, 0.4);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-btn);
            backdrop-filter: blur(6px);
        }

        .compare-content h2 {
            font-size: clamp(1.5rem, 2.5vw, 2rem);
            font-weight: 800;
            margin: 0 0 16px;
        }

        .compare-content .lead-text {
            color: var(--text-secondary);
            margin-bottom: 24px;
            line-height: 1.8;
        }

        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
        }

        .compare-table th,
        .compare-table td {
            padding: 14px 12px;
            text-align: center;
            font-size: 0.88rem;
            border-bottom: 1px solid var(--border);
        }

        .compare-table th {
            background: var(--card-bg);
            color: var(--text-primary);
            font-weight: 600;
        }

        .compare-table th:first-child,
        .compare-table td:first-child {
            text-align: left;
            padding-left: 20px;
            font-weight: 500;
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table .table-highlight {
            background: rgba(0, 255, 200, 0.06);
            box-shadow: inset 0 0 0 1px rgba(0, 255, 200, 0.25);
        }

        .compare-table .bi-check-circle {
            color: var(--neon-cyan);
        }

        .compare-table .bi-x-circle {
            color: var(--text-muted);
        }

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

        /* ===== 适用场景 ===== */
        .scenario-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            height: 100%;
            position: relative;
            overflow: hidden;
            transition: all var(--transition);
        }

        .scenario-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), transparent);
            opacity: 0.5;
            transition: opacity var(--transition);
        }

        .scenario-card:hover {
            border-color: rgba(157, 92, 255, 0.35);
            box-shadow: var(--glow-purple);
            transform: translateY(-4px);
        }

        .scenario-card .scenario-icon {
            font-size: 2rem;
            color: var(--neon-purple);
            margin-bottom: 16px;
        }

        .scenario-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .scenario-card .scenario-type {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }

        .scenario-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .scenario-card .recommend-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--gold);
            border: 1px solid rgba(212, 175, 55, 0.4);
            padding: 3px 10px;
            border-radius: var(--radius-btn);
            background: rgba(212, 175, 55, 0.06);
        }

        /* ===== 开通流程 ===== */
        .process-step {
            text-align: center;
            position: relative;
            padding: 0 16px;
        }

        .process-step .step-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--card-bg);
            border: 1px solid rgba(0, 255, 200, 0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--neon-cyan);
            box-shadow: inset 0 0 12px rgba(0, 255, 200, 0.08);
            transition: all var(--transition);
        }

        .process-step:hover .step-icon {
            box-shadow: var(--glow-cyan);
            transform: scale(1.05);
        }

        .process-step .step-num {
            font-size: 0.75rem;
            color: var(--text-muted);
            letter-spacing: 1px;
            margin-bottom: 6px;
            text-transform: uppercase;
        }

        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        .process-step::after {
            content: "";
            position: absolute;
            top: 32px;
            right: -12px;
            width: 24px;
            height: 1px;
            background: linear-gradient(90deg, var(--neon-purple), transparent);
            border-top: 1px dashed rgba(157, 92, 255, 0.4);
        }

        .process-step:last-child::after {
            display: none;
        }

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .accordion-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition);
        }

        .accordion-item:has(.accordion-button:not(.collapsed)) {
            border-color: rgba(0, 255, 200, 0.3);
        }

        .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 0.95rem;
            font-weight: 600;
            padding: 18px 20px;
            box-shadow: none;
            border: none;
            position: relative;
            transition: color var(--transition);
        }

        .accordion-button::before {
            content: "";
            position: absolute;
            left: 0;
            top: 14px;
            bottom: 14px;
            width: 4px;
            border-radius: 4px;
            background: var(--neon-cyan);
            box-shadow: var(--glow-cyan);
        }

        .accordion-button:not(.collapsed) {
            color: var(--neon-cyan);
            background: rgba(0, 255, 200, 0.02);
        }

        .accordion-button:not(.collapsed)::after {
            filter: brightness(1.5) sepia(1) hue-rotate(130deg) saturate(3);
            transform: rotate(45deg);
        }

        .accordion-button::after {
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%23A6A6B3' viewBox='0 0 16 16'%3E%3Cpath d='M8 4a.5.5 0 0 1 .5.5v3h3a.5.5 0 0 1 0 1h-3v3a.5.5 0 0 1-1 0v-3h-3a.5.5 0 0 1 0-1h3v-3A.5.5 0 0 1 8 4z'/%3E%3C/svg%3E");
            transition: transform var(--transition), filter var(--transition);
        }

        .accordion-body {
            padding: 0 20px 20px 24px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            padding: clamp(72px, 9vw, 110px) 0;
            text-align: center;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, var(--bg) 0%, rgba(11, 11, 15, 0.88) 50%, var(--bg) 100%);
        }

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

        .cta-section h2 {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section .cta-desc {
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

        .cta-section .cta-note {
            margin-top: 16px;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-alt);
            border-top: 2px solid transparent;
            position: relative;
            padding-top: 64px;
            padding-bottom: 0;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink));
            opacity: 0.7;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .footer-desc {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            max-width: 260px;
        }

        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: color var(--transition), padding-left var(--transition);
        }

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

        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-contact div {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.88rem;
        }

        .footer-contact i {
            color: var(--neon-purple);
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .hero-animate {
            animation: fadeInUp 0.8s ease-out both;
        }

        .hero-animate-delay {
            animation: fadeInUp 0.8s ease-out 0.15s both;
        }

        .hero-animate-delay2 {
            animation: fadeInUp 0.8s ease-out 0.3s both;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        /* ===== 响应式 ===== */
        @media (max-width: 991px) {
            .navbar-nav {
                margin-left: 0;
                margin-top: 12px;
                align-items: flex-start;
            }

            .navbar-nav .nav-link {
                padding: 0.5rem 0.75rem;
                width: 100%;
            }

            .navbar-nav .nav-link.active::after {
                left: 0.75rem;
                right: auto;
                width: 32px;
            }

            .btn-nav {
                margin: 12px 0 16px;
                width: 100%;
                text-align: center;
            }

            .navbar-collapse {
                background: var(--bg-alt);
                border: 1px solid var(--border);
                border-radius: var(--radius);
                padding: 16px;
                margin-top: 8px;
            }

            .compare-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .compare-image img {
                height: 280px;
            }

            .process-step::after {
                display: none;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .hero-actions .btn {
                width: 100%;
                text-align: center;
            }

            .page-hero h1 {
                font-size: 1.9rem;
            }

            .scenario-card {
                margin-bottom: 16px;
            }
        }

        @media (max-width: 575px) {
            .section {
                padding: 56px 0;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .compare-table {
                font-size: 0.8rem;
            }

            .compare-table th,
            .compare-table td {
                padding: 10px 8px;
            }

            .compare-table th:first-child,
            .compare-table td:first-child {
                padding-left: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-dark: #0B0B0F;
            --bg-card: #14141A;
            --bg-soft: #1C1C24;
            --neon-cyan: #00FFC8;
            --neon-purple: #9D5CFF;
            --neon-pink: #FF2D78;
            --gold: #D4AF37;
            --text-main: #F2F2F7;
            --text-secondary: #A6A6B3;
            --text-muted: #6B6B78;
            --border-color: rgba(255, 255, 255, 0.08);
            --shadow-cyan: 0 0 18px rgba(0, 255, 200, 0.28);
            --shadow-purple: 0 0 18px rgba(157, 92, 255, 0.24);
            --radius-card: 12px;
            --radius-lg: 16px;
            --radius-btn: 999px;
            --section-pad: clamp(64px, 8vw, 96px);
            --transition: 0.25s ease-in-out;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.8;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            color: var(--neon-cyan);
            text-decoration: none;
            transition: var(--transition);
        }

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

        img {
            max-width: 100%;
        }

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (max-width: 767px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(11, 11, 15, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink)) 1;
        }

        .navbar {
            padding: 0;
            min-height: 68px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-main) !important;
            line-height: 1.2;
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(0, 255, 200, 0.12), rgba(157, 92, 255, 0.12));
            border: 1px solid rgba(0, 255, 200, 0.4);
            border-radius: 9px;
            color: var(--neon-cyan);
            font-size: 1rem;
            box-shadow: var(--shadow-cyan);
        }

        .brand-sub {
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--text-secondary);
            margin-left: 2px;
            letter-spacing: 1px;
        }

        .navbar-nav {
            gap: 4px;
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-size: 0.95rem;
            font-weight: 500;
            padding: 8px 16px !important;
            position: relative;
            border-radius: 6px;
        }

        .nav-link:hover {
            color: #fff !important;
        }

        .nav-link.active {
            color: var(--neon-cyan) !important;
            text-shadow: 0 0 8px rgba(0, 255, 200, 0.35);
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 16px;
            right: 16px;
            bottom: 2px;
            height: 2px;
            background: var(--neon-cyan);
            box-shadow: var(--shadow-cyan);
            border-radius: 2px;
        }

        .btn-nav {
            padding: 8px 22px !important;
            border-radius: var(--radius-btn) !important;
            font-weight: 600;
        }

        .navbar-toggler {
            border: none;
            color: var(--text-main);
            font-size: 1.5rem;
            padding: 4px 10px;
            background: transparent;
        }

        .navbar-toggler:hover {
            color: var(--neon-cyan);
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--neon-cyan);
            outline-offset: 2px;
            border-radius: 6px;
        }

        @media (max-width: 991px) {
            .navbar-collapse {
                background: var(--bg-card);
                padding: 16px 20px;
                border-radius: 12px;
                margin-top: 12px;
                border: 1px solid var(--border-color);
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
            }

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

            .nav-link.active {
                border-left: 2px solid var(--neon-cyan);
                padding-left: 14px !important;
                background: rgba(0, 255, 200, 0.04);
                border-radius: 4px;
            }

            .btn-nav {
                width: 100%;
                text-align: center;
                margin-top: 8px;
            }

            .navbar-nav {
                gap: 0;
            }
        }

        /* ===== 按钮 ===== */
        .btn-primary {
            background: var(--neon-cyan) !important;
            border-color: var(--neon-cyan) !important;
            color: #0B0B0F !important;
            font-weight: 600;
            border-radius: var(--radius-btn);
            padding: 10px 28px;
            transition: var(--transition);
        }

        .btn-primary:hover {
            box-shadow: 0 0 24px rgba(0, 255, 200, 0.5);
            transform: translateY(-2px);
            color: #0B0B0F !important;
        }

        .btn-primary:active {
            transform: translateY(0);
        }

        .btn-outline-cyan {
            background: transparent;
            border: 1px solid var(--neon-cyan);
            color: var(--neon-cyan);
            border-radius: var(--radius-btn);
            padding: 10px 28px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-outline-cyan:hover {
            background: rgba(0, 255, 200, 0.08);
            color: var(--neon-cyan);
            box-shadow: var(--shadow-cyan);
        }

        .btn-lg-hero {
            padding: 14px 40px;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 1rem;
        }

        @media (max-width: 575px) {
            .btn-primary,
            .btn-outline-cyan {
                width: 100%;
                text-align: center;
            }
        }

        /* ===== 焦点状态 ===== */
        a:focus-visible,
        button:focus-visible,
        .btn:focus-visible {
            outline: 2px solid var(--neon-cyan);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            padding: 120px 0 110px;
            background: linear-gradient(180deg, rgba(11, 11, 15, 0.55), rgba(11, 11, 15, 0.88) 75%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border-color);
            overflow: hidden;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            border: 1px solid rgba(0, 255, 200, 0.3);
            border-radius: var(--radius-btn);
            color: var(--neon-cyan);
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 1px;
            background: rgba(0, 255, 200, 0.06);
            margin-bottom: 22px;
        }

        .page-hero h1 {
            font-size: clamp(2rem, 3vw, 2.6rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.3;
        }

        .hero-line {
            width: 84px;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink));
            background-size: 200% 100%;
            border-radius: 2px;
            margin-bottom: 24px;
            animation: flowLine 3.5s ease-in-out infinite;
        }

        @keyframes flowLine {
            0%,
            100% {
                background-position: 0% 50%;
            }
            50% {
                background-position: 100% 50%;
            }
        }

        .page-hero .hero-lead {
            max-width: 660px;
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.9;
            margin-bottom: 32px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb-wrap {
            margin-bottom: 24px;
        }

        .breadcrumb-wrap .breadcrumb {
            margin-bottom: 0;
            background: transparent;
            padding: 0;
        }

        .breadcrumb-wrap .breadcrumb-item {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .breadcrumb-wrap .breadcrumb-item a {
            color: var(--text-secondary);
        }

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

        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--neon-cyan);
        }

        .breadcrumb-wrap .breadcrumb-item+.breadcrumb-item::before {
            color: var(--text-muted);
            content: '/';
            padding: 0 8px;
        }

        @media (max-width: 575px) {
            .page-hero {
                padding: 80px 0 72px;
            }

            .hero-actions {
                flex-direction: column;
            }
        }

        /* ===== 通用区块 ===== */
        .section {
            padding: var(--section-pad) 0;
        }

        .section-alt {
            background: var(--bg-soft);
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 2px;
            color: var(--neon-cyan);
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3vw, 2rem);
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 720px;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        /* ===== 攻略卡片 ===== */
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            transition: var(--transition);
            height: 100%;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            border-color: rgba(0, 255, 200, 0.35);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-4px);
        }

        .card-image {
            height: 192px;
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .guide-card:hover .card-image img {
            transform: scale(1.04);
        }

        .card-image .card-pin {
            position: absolute;
            top: 14px;
            right: 14px;
            background: rgba(11, 11, 15, 0.8);
            border: 1px solid var(--neon-pink);
            color: var(--neon-pink);
            font-size: 0.7rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-btn);
            backdrop-filter: blur(6px);
        }

        .guide-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-tags {
            display: flex;
            gap: 8px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            padding: 3px 10px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--neon-cyan);
            border: 1px solid rgba(0, 255, 200, 0.3);
            border-radius: var(--radius-btn);
            background: rgba(0, 255, 200, 0.05);
        }

        .tag.purple {
            color: var(--neon-purple);
            border-color: rgba(157, 92, 255, 0.3);
            background: rgba(157, 92, 255, 0.05);
        }

        .tag.gold {
            color: var(--gold);
            border-color: rgba(212, 175, 55, 0.3);
            background: rgba(212, 175, 55, 0.05);
        }

        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .card-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .card-link {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--neon-cyan);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .card-link:hover {
            gap: 8px;
            color: #fff;
        }

        /* ===== 场景板块 ===== */
        .scenario-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            height: 100%;
            transition: var(--transition);
        }

        .scenario-card:hover {
            border-color: rgba(157, 92, 255, 0.35);
            box-shadow: var(--shadow-purple);
            transform: translateY(-4px);
        }

        .scenario-icon {
            width: 56px;
            height: 56px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            font-size: 1.6rem;
            margin-bottom: 20px;
            border: 1px solid transparent;
        }

        .scenario-icon.cyan {
            background: rgba(0, 255, 200, 0.1);
            color: var(--neon-cyan);
            border-color: rgba(0, 255, 200, 0.3);
        }

        .scenario-icon.purple {
            background: rgba(157, 92, 255, 0.1);
            color: var(--neon-purple);
            border-color: rgba(157, 92, 255, 0.3);
        }

        .scenario-icon.pink {
            background: rgba(255, 45, 120, 0.1);
            color: var(--neon-pink);
            border-color: rgba(255, 45, 120, 0.3);
        }

        .scenario-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-main);
        }

        .scenario-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.75;
        }

        /* ===== 流程 ===== */
        .process-wrap {
            position: relative;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .process-connector {
            position: absolute;
            top: 32px;
            left: 12%;
            right: 12%;
            height: 2px;
            border-top: 2px dashed rgba(0, 255, 200, 0.25);
            z-index: 1;
            pointer-events: none;
        }

        .process-step {
            text-align: center;
            padding: 0 12px;
            position: relative;
            z-index: 2;
        }

        .process-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            font-size: 1.5rem;
            background: var(--bg-card);
            border: 1px solid rgba(0, 255, 200, 0.35);
            color: var(--neon-cyan);
            box-shadow: var(--shadow-cyan);
        }

        .process-step h3 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-main);
        }

        .process-step p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.7;
        }

        @media (max-width: 991px) {
            .process-wrap {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px 16px;
            }

            .process-connector {
                display: none;
            }
        }

        @media (max-width: 575px) {
            .process-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* ===== FAQ ===== */
        .faq-wrap .accordion-item {
            background: transparent;
            border: 1px solid var(--border-color) !important;
            border-radius: var(--radius-card) !important;
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: none !important;
        }

        .accordion-button {
            background: var(--bg-card) !important;
            color: var(--text-main) !important;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 18px 24px;
            border-left: 4px solid var(--neon-cyan);
            box-shadow: none !important;
            transition: var(--transition);
        }

        .accordion-button:hover {
            background: var(--bg-soft) !important;
        }

        .accordion-button:not(.collapsed) {
            color: var(--neon-cyan) !important;
            border-left-color: var(--neon-cyan);
            background: var(--bg-soft) !important;
        }

        .accordion-button::after {
            font-family: 'bootstrap-icons';
            content: '\F64D';
            background: none;
            color: var(--text-secondary);
            font-size: 1rem;
            transition: transform 0.3s ease;
            width: 1.2em;
            height: 1.2em;
            line-height: 1.2;
        }

        .accordion-button:not(.collapsed)::after {
            transform: rotate(45deg);
            color: var(--neon-cyan);
        }

        .accordion-button:focus {
            box-shadow: none !important;
            outline: 2px solid var(--neon-cyan);
            outline-offset: -2px;
        }

        .accordion-body {
            background: var(--bg-card);
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
            padding: 0 24px 24px;
            border-left: 4px solid var(--neon-cyan);
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            padding: var(--section-pad) 0;
            background: linear-gradient(180deg, rgba(11, 11, 15, 0.7), rgba(11, 11, 15, 0.92)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-top: 1px solid var(--border-color);
        }

        .cta-box {
            max-width: 760px;
            margin: 0 auto;
            border: 1px solid rgba(0, 255, 200, 0.2);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            background: rgba(11, 11, 15, 0.65);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink));
        }

        .cta-box h2 {
            font-size: clamp(1.5rem, 2.5vw, 1.9rem);
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--text-main);
        }

        .cta-box p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1rem;
        }

        .btn-cta-small {
            display: block;
            margin-top: 16px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        @media (max-width: 575px) {
            .cta-box {
                padding: 40px 24px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 2px solid transparent;
            border-image: linear-gradient(90deg, var(--neon-cyan), var(--neon-purple), var(--neon-pink)) 1;
            padding: 64px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 16px;
            color: var(--text-main);
        }

        .footer-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 320px;
            margin-bottom: 0;
        }

        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

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

        .footer-contact {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .footer-contact div {
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-contact i {
            color: var(--neon-cyan);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            text-align: center;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* ===== 减少动效 ===== */
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }