/* roulang page: index */
:root {
            --color-bg: #0B0E14;
            --color-panel: #151B26;
            --color-card: #1B2230;
            --color-text: #F2F5F8;
            --color-text-secondary: #9AA8B9;
            --color-text-muted: #5C6A7E;
            --color-primary: #00E0C6;
            --color-secondary: #FF2E88;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(255, 255, 255, 0.15);
            --radius: 12px;
            --radius-lg: 16px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.4);
            --transition: all 0.2s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text);
            font-size: 15px;
            line-height: 1.8;
            overflow-x: hidden;
        }

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

        img {
            max-width: 100%;
            height: auto;
        }

        ul,
        ol {
            list-style: none;
        }

        .container,
        .container-lg,
        .container-xl,
        .container-xxl {
            max-width: 1240px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: 96px 0;
        }

        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--color-text);
            margin-bottom: 0;
        }

        .section-head p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-top: 14px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
        }

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

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-right: 24px;
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-panel);
            border: 1px solid var(--color-border-light);
            border-radius: 8px;
            color: var(--color-primary);
            font-size: 16px;
        }

        .brand-text {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            letter-spacing: 0.01em;
            white-space: nowrap;
            transition: var(--transition);
        }

        .brand-text:hover {
            color: var(--color-primary);
        }

        .custom-navbar .navbar-nav .nav-link {
            color: var(--color-text-secondary);
            font-size: 15px;
            font-weight: 400;
            padding: 10px 18px;
            margin: 0 4px;
            position: relative;
            transition: var(--transition);
        }

        .custom-navbar .navbar-nav .nav-link:hover {
            color: var(--color-primary);
        }

        .custom-navbar .navbar-nav .nav-link.active {
            color: var(--color-text);
        }

        .custom-navbar .navbar-nav .nav-link.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 224, 198, 0.6);
        }

        .nav-cta {
            padding: 8px 22px;
            font-size: 14px;
            background: linear-gradient(135deg, #FF2E88, #FF6B4A);
            color: #fff;
            border-radius: 6px;
            font-weight: 600;
            border: none;
            margin-left: 16px;
            transition: var(--transition);
        }

        .nav-cta:hover {
            color: #fff;
            filter: brightness(1.1);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid var(--color-border-light);
            padding: 6px 12px;
        }

        .navbar-toggler:focus {
            box-shadow: none;
        }

        .navbar-toggler i {
            color: var(--color-text);
            font-size: 20px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding: 80px 0;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .hero-bg::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 14, 20, 0.96) 0%, rgba(11, 14, 20, 0.82) 45%, rgba(11, 14, 20, 0.55) 100%);
        }

        .hero-glow {
            position: absolute;
            right: 8%;
            top: 18%;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 224, 198, 0.16), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-glow-two {
            position: absolute;
            right: 20%;
            bottom: 10%;
            width: 280px;
            height: 280px;
            background: radial-gradient(circle, rgba(255, 46, 136, 0.10), transparent 65%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(255, 46, 136, 0.12);
            border: 1px solid rgba(255, 46, 136, 0.4);
            color: var(--color-secondary);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: 24px;
        }

        .hero h1 {
            font-size: 50px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text);
            max-width: 720px;
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }

        .hero-sub {
            font-size: 17px;
            color: var(--color-text-secondary);
            max-width: 620px;
            line-height: 1.9;
            margin-bottom: 36px;
        }

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

        /* ===== Buttons ===== */
        .btn-primary {
            background: var(--color-primary);
            color: #0B0E14;
            border: none;
            border-radius: 6px;
            padding: 12px 28px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: #00d0b8;
            color: #0B0E14;
            box-shadow: 0 0 20px rgba(0, 224, 198, 0.35);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 12px rgba(0, 224, 198, 0.2);
        }

        .btn-ghost {
            background: transparent;
            color: var(--color-text);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 6px;
            padding: 12px 28px;
            font-weight: 600;
            transition: var(--transition);
        }

        .btn-ghost:hover {
            border-color: var(--color-secondary);
            color: var(--color-secondary);
        }

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

        /* ===== Features ===== */
        .feature-list {
            padding-top: 8px;
        }

        .feature-row {
            display: flex;
            align-items: center;
            gap: 56px;
            margin-bottom: 72px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-row.reverse {
            flex-direction: row-reverse;
        }

        .feature-text {
            flex: 1;
        }

        .feature-index {
            font-size: 14px;
            color: var(--color-primary);
            font-weight: 600;
            letter-spacing: 0.05em;
        }

        .feature-text h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text);
            margin: 10px 0 14px;
        }

        .feature-text p {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.85;
        }

        .feature-media {
            flex: 1;
        }

        .feature-media img {
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow);
            width: 100%;
            transition: var(--transition);
        }

        .feature-media img:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(0, 224, 198, 0.3);
        }

        /* ===== Benefit Strip ===== */
        .benefit-section {
            background: var(--color-panel);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .benefit-head {
            text-align: center;
            margin-bottom: 48px;
        }

        .benefit-head h2 {
            font-size: 32px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 0;
        }

        .benefit-head p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-top: 12px;
        }

        .benefit-grid {
            display: flex;
            gap: 32px;
        }

        .benefit-item {
            flex: 1;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 36px 28px;
            text-align: center;
            transition: var(--transition);
        }

        .benefit-item:hover {
            border-color: rgba(0, 224, 198, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .benefit-item i {
            font-size: 30px;
            color: var(--color-primary);
            margin-bottom: 16px;
        }

        .benefit-item h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 10px;
        }

        .benefit-item p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== Process ===== */
        .process-track {
            display: flex;
            justify-content: space-between;
            position: relative;
            gap: 24px;
        }

        .process-track::before {
            content: "";
            position: absolute;
            top: 23px;
            left: 90px;
            right: 90px;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            opacity: 0.6;
        }

        .process-node {
            position: relative;
            flex: 1;
            text-align: center;
            padding: 0 12px;
        }

        .node-dot {
            width: 48px;
            height: 48px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--color-panel);
            border: 2px solid var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }

        .process-node.active .node-dot {
            box-shadow: 0 0 16px rgba(0, 224, 198, 0.5);
        }

        .process-node.completed .node-dot {
            background: var(--color-primary);
            border-color: var(--color-primary);
        }

        .node-dot i {
            font-size: 18px;
            color: var(--color-primary);
        }

        .process-node.completed .node-dot i {
            color: var(--color-bg);
        }

        .node-status {
            display: inline-block;
            font-size: 12px;
            color: var(--color-text-muted);
            border: 1px solid var(--color-border-light);
            border-radius: 999px;
            padding: 2px 12px;
            margin-bottom: 10px;
        }

        .process-node.active .node-status {
            color: var(--color-primary);
            border-color: rgba(0, 224, 198, 0.4);
        }

        .process-node.completed .node-status {
            color: var(--color-primary);
            border-color: rgba(0, 224, 198, 0.3);
        }

        .process-node h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .process-node p {
            font-size: 13px;
            color: var(--color-text-secondary);
        }

        /* ===== News List ===== */
        .news-section {
            background: var(--color-panel);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .news-list {
            max-width: 880px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-card {
            position: relative;
            display: flex;
            gap: 24px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 24px 28px;
            transition: var(--transition);
        }

        .news-card:hover {
            border-color: rgba(255, 46, 136, 0.35);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .news-card::before {
            content: "";
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--color-secondary);
            border-radius: 3px;
            opacity: 0;
            transition: var(--transition);
        }

        .news-card:hover::before {
            opacity: 1;
        }

        .news-meta {
            flex: 0 0 130px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .news-meta time {
            font-size: 13px;
            color: var(--color-text-muted);
            font-family: "DIN Alternate", "Arial", sans-serif;
        }

        .badge-tag {
            display: inline-block;
            width: fit-content;
            padding: 2px 10px;
            border-radius: 999px;
            background: rgba(255, 46, 136, 0.10);
            border: 1px solid rgba(255, 46, 136, 0.35);
            color: var(--color-secondary);
            font-size: 12px;
        }

        .news-content {
            flex: 1;
        }

        .news-content h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }

        .news-content h3 a:hover {
            color: var(--color-primary);
        }

        .news-content p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 10px;
        }

        .read-more {
            font-size: 14px;
            color: var(--color-primary);
        }

        .read-more:hover {
            color: var(--color-secondary);
        }

        .empty-note {
            text-align: center;
            color: var(--color-text-muted);
            font-size: 15px;
            padding: 40px 0;
            background: var(--color-card);
            border: 1px dashed var(--color-border-light);
            border-radius: var(--radius);
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 96px 0;
            background-image: url('/assets/images/backpic/back-2.png');
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: rgba(11, 14, 20, 0.85);
        }

        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: 34px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--color-text-secondary);
            margin-bottom: 36px;
        }

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

        /* ===== FAQ ===== */
        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
        }

        .custom-accordion .accordion-item {
            background: transparent;
            border: none;
            border-top: 1px solid var(--color-border);
            border-radius: 0;
        }

        .custom-accordion .accordion-item:last-child {
            border-bottom: 1px solid var(--color-border);
        }

        .custom-accordion .accordion-button {
            background: transparent;
            color: var(--color-text);
            font-size: 16px;
            font-weight: 600;
            padding: 22px 20px;
            box-shadow: none;
            border-radius: 0;
            transition: var(--transition);
        }

        .custom-accordion .accordion-button:hover {
            color: var(--color-primary);
        }

        .custom-accordion .accordion-button:not(.collapsed) {
            color: var(--color-primary);
            background: transparent;
            box-shadow: none;
        }

        .custom-accordion .accordion-button::after {
            background-image: none;
            content: "+";
            font-size: 22px;
            font-weight: 400;
            color: var(--color-text-secondary);
            width: auto;
            height: auto;
            transition: var(--transition);
        }

        .custom-accordion .accordion-button:not(.collapsed)::after {
            content: "−";
            transform: none;
            color: var(--color-primary);
        }

        .custom-accordion .accordion-body {
            padding: 0 20px 24px;
            color: var(--color-text-secondary);
            font-size: 15px;
            line-height: 1.9;
        }

        /* ===== Footer ===== */
        .site-footer {
            position: relative;
            background: var(--color-bg);
            padding: 64px 0 24px;
        }

        .site-footer::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
            opacity: 0.8;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-logo {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .footer-logo:hover {
            color: var(--color-primary);
        }

        .footer-logo-icon {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--color-panel);
            border: 1px solid var(--color-border-light);
            border-radius: 8px;
            color: var(--color-primary);
            font-size: 14px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-top: 16px;
        }

        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 16px;
        }

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

        .footer-col ul li a {
            font-size: 14px;
            color: var(--color-text-secondary);
        }

        .footer-col ul li a:hover {
            color: var(--color-primary);
        }

        .footer-info p {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-bottom: 6px;
        }

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

        .footer-bottom p {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 0;
        }

        /* ===== Responsive ===== */
        @media (max-width: 992px) {
            .custom-navbar .navbar-collapse {
                background: var(--color-bg);
                border: 1px solid var(--color-border);
                border-radius: var(--radius);
                padding: 16px;
                margin-top: 12px;
            }

            .custom-navbar .navbar-nav .nav-link {
                padding: 12px 16px;
            }

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

            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                display: inline-block;
                text-align: center;
            }

            .feature-row,
            .feature-row.reverse {
                flex-direction: column;
                gap: 32px;
            }

            .benefit-grid {
                flex-direction: column;
            }

            .process-track {
                flex-direction: column;
                gap: 32px;
            }

            .process-track::before {
                display: none;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 64px 0;
            }

            .hero {
                min-height: 60vh;
                padding: 60px 0;
            }

            .hero h1 {
                font-size: 36px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .news-card {
                flex-direction: column;
                gap: 16px;
            }

            .news-meta {
                flex: initial;
                flex-direction: row;
                align-items: center;
            }
        }

        @media (max-width: 576px) {
            .section-head h2 {
                font-size: 26px;
            }

            .hero h1 {
                font-size: 30px;
            }

            .hero-sub {
                font-size: 15px;
            }

            .footer-top {
                grid-template-columns: 1fr;
            }

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

            .hero-actions .btn {
                width: 100%;
                text-align: center;
            }

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

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

            .feature-text h3 {
                font-size: 19px;
            }

            .section-head {
                margin-bottom: 40px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #00E0C6;
            --secondary: #FF2E88;
            --bg-dark: #0B0E14;
            --bg-panel: #151B26;
            --bg-card: #1B2230;
            --text-main: #F2F5F8;
            --text-secondary: #9AA8B9;
            --text-muted: #5C6A7E;
            --border: rgba(255, 255, 255, 0.08);
            --border-hover: rgba(0, 224, 198, 0.3);
            --radius: 12px;
            --radius-lg: 16px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.4);
            --transition: all 0.2s ease;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-stack);
            background: var(--bg-dark);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--primary);
        }

        img {
            max-width: 100%;
            height: auto;
        }

        .container {
            max-width: 1240px;
            width: 100%;
            padding-right: 24px;
            padding-left: 24px;
            margin-right: auto;
            margin-left: auto;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
        }

        .custom-navbar {
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            min-height: 68px;
            padding-top: 0;
            padding-bottom: 0;
        }

        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 0;
            padding-bottom: 0;
            margin-right: 32px;
            font-weight: 600;
            font-size: 18px;
            color: var(--text-main);
            line-height: 1.2;
            white-space: nowrap;
        }

        .custom-navbar .navbar-brand:hover {
            color: var(--text-main);
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0E14;
            font-size: 16px;
            flex-shrink: 0;
        }

        .brand-text {
            font-size: 17px;
            letter-spacing: 0.01em;
        }

        .custom-navbar .navbar-nav {
            gap: 4px;
        }

        .custom-navbar .nav-item {
            position: relative;
        }

        .custom-navbar .nav-link {
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            padding: 22px 18px !important;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .custom-navbar .nav-link:hover {
            color: var(--primary);
        }

        .custom-navbar .nav-link.active {
            color: var(--text-main);
        }

        .custom-navbar .nav-link.active::after {
            content: '';
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 2px 2px 0 0;
            box-shadow: 0 0 12px rgba(0, 224, 198, 0.5);
        }

        .nav-cta {
            margin-left: 16px;
            background: linear-gradient(135deg, #FF2E88, #FF6B4A);
            border: none;
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            padding: 10px 24px;
            border-radius: 6px;
            transition: var(--transition);
        }

        .nav-cta:hover {
            filter: brightness(1.1);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 46, 136, 0.3);
        }

        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 6px;
            color: var(--text-main);
            padding: 6px 12px;
            font-size: 18px;
            line-height: 1;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 0.2rem rgba(0, 224, 198, 0.25);
        }

        /* ===== 按钮 ===== */
        .btn-primary-custom {
            background: var(--primary);
            border: none;
            color: #0B0E14;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: 6px;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-custom:hover {
            box-shadow: 0 0 20px rgba(0, 224, 198, 0.35);
            transform: translateY(-2px);
            color: #0B0E14;
        }

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

        .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-main);
            font-size: 15px;
            font-weight: 500;
            padding: 12px 28px;
            border-radius: 6px;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-ghost:hover {
            border-color: var(--secondary);
            color: var(--secondary);
            transform: translateY(-2px);
        }

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

        /* ===== Hero ===== */
        .page-hero {
            position: relative;
            min-height: 80vh;
            display: flex;
            align-items: flex-end;
            padding: 120px 0 160px;
            background: url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
            border-bottom: 1px solid var(--border);
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 14, 20, 0.95) 0%, rgba(11, 14, 20, 0.8) 50%, rgba(11, 14, 20, 0.6) 100%);
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to top, var(--bg-dark), transparent);
        }

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

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 5px 16px;
            border: 1px solid rgba(255, 46, 136, 0.5);
            background: rgba(255, 46, 136, 0.08);
            border-radius: 999px;
            color: var(--secondary);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.02em;
            margin-bottom: 24px;
        }

        .page-hero h1 {
            font-size: 48px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-main);
            margin-bottom: 20px;
            max-width: 760px;
            letter-spacing: 0.01em;
            will-change: transform;
            animation: fadeUp 0.6s ease;
        }

        .page-hero .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-secondary);
            max-width: 620px;
            margin-bottom: 36px;
        }

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

        @keyframes fadeUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== 板块通用 ===== */
        .section-block {
            padding: 96px 0;
        }

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

        .section-header .section-eyebrow {
            display: inline-block;
            font-size: 13px;
            color: var(--primary);
            font-weight: 500;
            letter-spacing: 0.05em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--text-main);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
        }

        .section-divider {
            height: 1px;
            background: linear-gradient(to right, var(--primary), var(--secondary), transparent);
            border: none;
            opacity: 0.3;
            margin: 0;
        }

        /* ===== 登录方式卡片 ===== */
        .login-method-card {
            background: var(--bg-panel);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 28px;
            height: 100%;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .login-method-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: var(--transition);
        }

        .login-method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--border-hover);
        }

        .login-method-card:hover::before {
            opacity: 1;
        }

        .login-method-card .method-icon {
            width: 52px;
            height: 52px;
            background: rgba(0, 224, 198, 0.1);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            margin-bottom: 20px;
        }

        .login-method-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .login-method-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .login-method-card.featured {
            background: linear-gradient(145deg, rgba(0, 224, 198, 0.08), rgba(21, 27, 38, 0.9));
            border-color: rgba(0, 224, 198, 0.25);
        }

        .login-method-card.featured .method-icon {
            background: rgba(255, 46, 136, 0.1);
            color: var(--secondary);
        }

        /* ===== 图文步骤 ===== */
        .step-block {
            padding: 96px 0;
            background: var(--bg-dark);
        }

        .step-block:nth-of-type(even) {
            background: var(--bg-panel);
        }

        .step-media {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .step-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .step-media::after {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: var(--radius-lg);
            box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06);
        }

        .step-content {
            padding: 32px 0;
        }

        .step-content .step-number {
            display: inline-block;
            font-size: 13px;
            color: var(--secondary);
            font-weight: 600;
            letter-spacing: 0.05em;
            margin-bottom: 12px;
        }

        .step-content h2 {
            font-size: 28px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 24px;
        }

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

        .step-list li {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .step-list li:last-child {
            border-bottom: none;
        }

        .step-list li .step-num {
            width: 28px;
            height: 28px;
            background: rgba(255, 46, 136, 0.1);
            border: 1px solid rgba(255, 46, 136, 0.3);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 600;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            margin-top: 4px;
        }

        .step-list li h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .step-list li p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 安全提示 ===== */
        .security-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            padding: 96px 0;
        }

        .security-item {
            text-align: center;
            padding: 28px 20px;
            border-radius: var(--radius);
            background: var(--bg-card);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
        }

        .security-item:hover {
            transform: translateY(-4px);
            border-color: rgba(255, 46, 136, 0.3);
            box-shadow: var(--shadow);
        }

        .security-item .sec-icon {
            width: 46px;
            height: 46px;
            margin: 0 auto 16px;
            background: rgba(255, 46, 136, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--secondary);
            font-size: 18px;
        }

        .security-item h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }

        .security-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== 适用场景 ===== */
        .scenario-card {
            display: flex;
            gap: 18px;
            padding: 24px;
            border-radius: var(--radius);
            background: var(--bg-panel);
            border: 1px solid var(--border);
            transition: var(--transition);
            height: 100%;
        }

        .scenario-card:hover {
            border-color: rgba(0, 224, 198, 0.3);
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }

        .scenario-card .scenario-icon {
            width: 42px;
            height: 42px;
            flex-shrink: 0;
            background: rgba(0, 224, 198, 0.1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 17px;
        }

        .scenario-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .scenario-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-dark);
            padding: 96px 0;
        }

        .faq-accordion .accordion-item {
            background: var(--bg-panel);
            border: 1px solid var(--border);
            border-radius: var(--radius) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            background: var(--bg-panel);
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 24px;
            box-shadow: none;
            border: none;
            transition: var(--transition);
        }

        .faq-accordion .accordion-button:hover {
            color: var(--primary);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: var(--bg-panel);
            color: var(--primary);
            box-shadow: none;
        }

        .faq-accordion .accordion-button::after {
            content: '';
            background-image: none;
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 16px;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            transition: var(--transition);
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            color: var(--primary);
        }

        .faq-accordion .accordion-button.collapsed::after {
            content: '\f067';
            color: var(--text-muted);
        }

        .faq-accordion .accordion-button:not(.collapsed)::after {
            content: '\f068';
            color: var(--primary);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 0.2rem rgba(0, 224, 198, 0.15);
            border-color: transparent;
        }

        .faq-accordion .accordion-body {
            padding: 0 24px 24px;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 18px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 96px 0;
            position: relative;
            overflow: hidden;
            background: url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(11, 14, 20, 0.88);
        }

        .cta-inner {
            position: relative;
            text-align: center;
            padding: 48px 0;
        }

        .cta-inner h2 {
            font-size: 34px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 36px;
        }

        .cta-inner .btn-primary-custom {
            font-size: 16px;
            padding: 14px 36px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-dark);
            border-top: 1px solid var(--border);
            position: relative;
        }

        .site-footer::before {
            content: '';
            display: block;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--secondary), transparent);
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            opacity: 0.4;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            padding: 64px 0 48px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 16px;
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
        }

        .footer-logo-icon {
            width: 32px;
            height: 32px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0B0E14;
            font-size: 14px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
            margin-bottom: 0;
        }

        .footer-col h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }

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

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

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-secondary);
            transition: var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--primary);
        }

        .footer-info p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 2;
            margin-bottom: 0;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1200px) {
            .brand-text {
                font-size: 16px;
            }
        }

        @media (max-width: 992px) {
            .custom-navbar .navbar-collapse {
                background: rgba(11, 14, 20, 0.98);
                padding: 16px 24px 24px;
                border-radius: 0 0 var(--radius) var(--radius);
                border-bottom: 1px solid var(--border);
            }

            .custom-navbar .navbar-nav {
                gap: 0;
                margin-bottom: 12px;
            }

            .custom-navbar .nav-link {
                padding: 14px 16px !important;
                border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            }

            .custom-navbar .nav-link.active::after {
                left: 16px;
                right: auto;
                bottom: auto;
                top: 50%;
                width: 3px;
                height: 20px;
                transform: translateY(-50%);
                border-radius: 3px;
            }

            .nav-cta {
                margin-left: 0;
                display: block;
                text-align: center;
            }

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

            .page-hero h1 {
                font-size: 40px;
            }
        }

        @media (max-width: 768px) {
            .page-hero {
                min-height: 70vh;
                padding: 80px 0 120px;
            }

            .page-hero h1 {
                font-size: 32px;
            }

            .page-hero .hero-subtitle {
                font-size: 15px;
            }

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

            .step-block {
                padding: 64px 0;
            }

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

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

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

            .section-header h2 {
                font-size: 26px;
            }

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

        @media (max-width: 576px) {
            .custom-navbar .navbar-brand {
                font-size: 15px;
                margin-right: 12px;
            }

            .brand-text {
                font-size: 14px;
                max-width: 180px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

            .page-hero {
                padding: 64px 0 96px;
                min-height: 60vh;
            }

            .page-hero h1 {
                font-size: 28px;
            }

            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .step-content {
                padding: 24px 0;
            }

            .step-list li {
                flex-direction: row;
                gap: 12px;
            }

            .footer-top {
                grid-template-columns: 1fr;
                text-align: left;
            }
        }

        /* ===== 表单预留 ===== */
        .form-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .form-control {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 8px;
            color: var(--text-main);
            padding: 12px 16px;
            font-size: 14px;
            transition: var(--transition);
        }

        .form-control:focus {
            background: var(--bg-card);
            border-color: var(--primary);
            box-shadow: 0 0 0 0.2rem rgba(0, 224, 198, 0.15);
            color: var(--text-main);
        }

        .form-control::placeholder {
            color: var(--text-muted);
        }

/* roulang page: article */
:root {
            --bg-primary: #0B0E14;
            --bg-panel: #151B26;
            --bg-card: #1B2230;
            --accent-cyan: #00E0C6;
            --accent-magenta: #FF2E88;
            --accent-orange: #FF6B4A;
            --text-primary: #F2F5F8;
            --text-secondary: #9AA8B9;
            --text-muted: #5C6A7E;
            --border-line: rgba(255, 255, 255, 0.08);
            --card-radius: 12px;
            --shadow-default: 0 4px 20px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.4);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-padding-desktop: 96px;
            --section-padding-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.8;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--text-primary);
            text-decoration: none;
            transition: color .2s ease, border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

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

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

        .container {
            max-width: 1240px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(11, 14, 20, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-line);
        }

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

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
            color: var(--text-primary);
            font-weight: 600;
            font-size: 17px;
        }

        .navbar-brand:hover {
            color: var(--text-primary);
        }

        .brand-icon {
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
            border-radius: 8px;
            font-size: 16px;
            color: #0B0E14;
        }

        .brand-text {
            font-size: 16px;
            letter-spacing: .01em;
            white-space: nowrap;
        }

        .custom-navbar .navbar-toggler {
            border: none;
            color: var(--text-primary);
            font-size: 22px;
            padding: 6px 10px;
        }

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

        .custom-navbar .nav-item {
            margin: 0 6px;
        }

        .custom-navbar .nav-link {
            color: var(--text-secondary);
            font-size: 15px;
            font-weight: 500;
            padding: 10px 16px;
            position: relative;
            border-radius: 4px;
            transition: color .2s ease;
        }

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

        .custom-navbar .nav-link.active {
            color: var(--text-primary);
            font-weight: 600;
        }

        .custom-navbar .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px rgba(0, 224, 198, 0.5);
        }

        .nav-cta {
            background: linear-gradient(135deg, var(--accent-magenta), var(--accent-orange));
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            border: none;
            border-radius: 6px;
            padding: 10px 26px;
            margin-left: 16px;
            transition: filter .2s ease, transform .2s ease, box-shadow .2s ease;
        }

        .nav-cta:hover {
            color: #fff;
            filter: brightness(1.12);
            transform: translateY(-1px);
            box-shadow: 0 4px 18px rgba(255, 46, 136, 0.3);
        }

        .nav-cta:active {
            transform: translateY(1px);
        }

        /* ============ 页面 Banner ============ */
        .page-banner {
            position: relative;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            padding: 110px 0 90px;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, rgba(11, 14, 20, 0.55) 0%, rgba(11, 14, 20, 0.82) 100%);
            z-index: 1;
        }

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

        .page-banner::after {
            content: '';
            position: absolute;
            right: -80px;
            top: 50%;
            transform: translateY(-70%);
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(0, 224, 198, 0.18) 0%, transparent 60%);
            z-index: 1;
            pointer-events: none;
        }

        .breadcrumb-wrap {
            margin-bottom: 48px;
        }

        .breadcrumb-wrap .breadcrumb {
            justify-content: flex-start;
            margin: 0;
            background: transparent;
            padding: 0;
        }

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

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

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

        .breadcrumb-wrap .breadcrumb-item.active {
            color: var(--text-primary);
        }

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

        .page-banner h1 {
            font-size: clamp(30px, 5vw, 46px);
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: .01em;
            max-width: 780px;
            margin-bottom: 24px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .meta-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 46, 136, 0.12);
            border: 1px solid rgba(255, 46, 136, 0.35);
            color: var(--accent-magenta);
            padding: 5px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
        }

        .meta-date {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
            font-size: 14px;
        }

        /* ============ 正文区 ============ */
        .article-section {
            padding: 56px 0 80px;
        }

        .container-article {
            max-width: 820px;
            margin: 0 auto;
        }

        .article-content-card {
            background: var(--bg-panel);
            border: 1px solid var(--border-line);
            border-radius: var(--card-radius);
            box-shadow: var(--shadow-default);
            padding: 56px;
        }

        .article-content {
            font-size: 17px;
            line-height: 2;
            color: var(--text-primary);
        }

        .article-content p {
            margin-bottom: 24px;
        }

        .article-content h2 {
            font-size: 26px;
            font-weight: 600;
            margin: 48px 0 20px;
            padding-bottom: 12px;
            position: relative;
            color: var(--text-primary);
        }

        .article-content h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 48px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), transparent);
            border-radius: 3px;
        }

        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin: 40px 0 16px;
            color: var(--text-primary);
        }

        .article-content ul,
        .article-content ol {
            padding-left: 1.5em;
            margin-bottom: 24px;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: 10px;
        }

        .article-content img {
            border-radius: 8px;
            margin: 32px 0;
        }

        .article-content blockquote {
            background: var(--bg-card);
            border-left: 4px solid var(--accent-cyan);
            padding: 20px 28px;
            border-radius: 0 8px 8px 0;
            margin: 32px 0;
            color: var(--text-secondary);
            font-style: normal;
        }

        .article-content a {
            color: var(--accent-cyan);
            border-bottom: 1px solid rgba(0, 224, 198, 0.3);
        }

        .article-content a:hover {
            border-bottom-color: var(--accent-cyan);
        }

        .article-content code {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            padding: 2px 8px;
            border-radius: 4px;
            font-size: 14px;
            color: var(--accent-cyan);
        }

        .not-found {
            text-align: center;
            padding: 60px 20px;
        }

        .not-found p {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .not-found .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--accent-cyan);
            color: #0B0E14;
            font-weight: 600;
            border: none;
            border-radius: 6px;
            padding: 12px 32px;
            transition: all .2s ease;
        }

        .not-found .btn:hover {
            box-shadow: 0 0 20px rgba(0, 224, 198, 0.35);
            transform: translateY(-2px);
        }

        .article-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 16px;
            border-top: 1px solid var(--border-line);
            margin-top: 48px;
            padding-top: 32px;
        }

        .article-footer-links a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border: 1px solid var(--border-line);
            border-radius: 6px;
            transition: all .2s ease;
        }

        .article-footer-links a:hover {
            color: var(--accent-cyan);
            border-color: var(--accent-cyan);
            background: rgba(0, 224, 198, 0.05);
            transform: translateY(-2px);
        }

        /* ============ 相关推荐 ============ */
        .related-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-primary);
            position: relative;
        }

        .section-head {
            margin-bottom: 52px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 600;
            letter-spacing: .01em;
            margin-bottom: 8px;
        }

        .section-head .section-sub {
            color: var(--text-secondary);
            font-size: 16px;
        }

        .related-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: 12px;
            overflow: hidden;
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .related-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 224, 198, 0.3);
        }

        .related-card .card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
        }

        .related-card .card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .4s ease;
        }

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

        .related-card .card-img-wrap::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(180deg, transparent 60%, rgba(11, 14, 20, 0.5));
        }

        .related-card .card-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .related-card .card-tag {
            align-self: flex-start;
            font-size: 12px;
            color: var(--accent-magenta);
            background: rgba(255, 46, 136, 0.1);
            border: 1px solid rgba(255, 46, 136, 0.3);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            font-weight: 500;
        }

        .related-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .related-card h3 a:hover {
            color: var(--accent-cyan);
        }

        .related-card .card-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .related-card .card-meta a {
            color: var(--accent-cyan);
            font-size: 14px;
            font-weight: 500;
        }

        .related-card .card-meta a:hover {
            color: var(--text-primary);
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-panel);
        }

        .faq-section .section-head {
            text-align: center;
        }

        .faq-section .section-head h2 {
            color: var(--text-primary);
        }

        .faq-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .custom-accordion .accordion-item {
            background: transparent;
            border: none;
            border-bottom: 1px solid var(--border-line);
            border-radius: 0;
        }

        .custom-accordion .accordion-item:first-child {
            border-top: 1px solid var(--border-line);
        }

        .custom-accordion .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-size: 16px;
            font-weight: 600;
            padding: 24px 48px 24px 0;
            box-shadow: none;
            border: none;
            position: relative;
        }

        .custom-accordion .accordion-button:not(.collapsed) {
            background: transparent;
            color: var(--accent-cyan);
            box-shadow: none;
        }

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

        .custom-accordion .accordion-button::after {
            content: '+';
            background: none;
            width: 28px;
            height: 28px;
            font-size: 28px;
            font-weight: 400;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
            transition: transform .2s ease, color .2s ease;
        }

        .custom-accordion .accordion-button:not(.collapsed)::after {
            content: '−';
            color: var(--accent-cyan);
            transform: none;
        }

        .custom-accordion .accordion-body {
            padding: 0 0 28px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.9;
        }

        /* ============ CTA 区 ============ */
        .cta-section {
            padding: var(--section-padding-desktop) 0;
            background: var(--bg-primary);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            left: 50%;
            top: 0;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(0, 224, 198, 0.1), transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: .01em;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: 17px;
            margin-bottom: 40px;
            line-height: 1.8;
        }

        .cta-inner .btn-main {
            background: var(--accent-cyan);
            color: #0B0E14;
            font-weight: 600;
            font-size: 16px;
            border: none;
            border-radius: 6px;
            padding: 14px 44px;
            transition: all .2s ease;
            display: inline-block;
        }

        .cta-inner .btn-main:hover {
            box-shadow: 0 0 24px rgba(0, 224, 198, 0.4);
            transform: translateY(-2px);
            color: #0B0E14;
        }

        .cta-inner .btn-main:active {
            transform: translateY(1px);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--bg-primary);
            border-top: 1px solid var(--border-line);
            position: relative;
        }

        .site-footer::before {
            content: '';
            position: absolute;
            top: -1px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-magenta), transparent);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.1fr;
            gap: 40px;
            padding: 72px 0 56px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

        .footer-logo:hover {
            color: var(--text-primary);
        }

        .footer-logo-icon {
            width: 34px;
            height: 34px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-magenta));
            border-radius: 8px;
            font-size: 15px;
            color: #0B0E14;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.8;
            max-width: 280px;
            margin-bottom: 0;
        }

        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 20px;
        }

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

        .footer-col ul li {
            margin-bottom: 12px;
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 14px;
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-info p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 8px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-line);
            padding: 24px 0;
            text-align: center;
        }

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 13px;
            margin: 0;
        }

        /* ============ 响应式 ============ */
        @media (max-width: 992px) {
            .custom-navbar {
                padding: 10px 0;
            }

            .custom-navbar .navbar-collapse {
                padding: 20px 0 10px;
                border-top: 1px solid var(--border-line);
                margin-top: 12px;
            }

            .custom-navbar .nav-item {
                margin: 4px 0;
            }

            .custom-navbar .nav-link.active::after {
                left: 0;
                right: auto;
                width: 32px;
                bottom: 4px;
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 16px;
                display: block;
                text-align: center;
            }

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

        @media (max-width: 768px) {
            .page-banner {
                padding: 70px 0 50px;
            }

            .page-banner h1 {
                font-size: 30px;
                line-height: 1.3;
            }

            .article-section {
                padding: 32px 0 56px;
            }

            .article-content-card {
                padding: 28px 22px;
            }

            .article-content {
                font-size: 16px;
                line-height: 1.9;
            }

            .article-content h2 {
                font-size: 22px;
                margin-top: 36px;
            }

            .article-content h3 {
                font-size: 18px;
            }

            .related-section,
            .faq-section,
            .cta-section {
                padding: 56px 0;
            }

            .section-head {
                margin-bottom: 36px;
            }

            .section-head h2 {
                font-size: 26px;
            }

            .cta-inner .btn-main {
                width: 100%;
                max-width: 360px;
            }
        }

        @media (max-width: 576px) {
            .custom-navbar .navbar-brand {
                font-size: 15px;
            }

            .brand-text {
                font-size: 14px;
                white-space: normal;
                line-height: 1.3;
            }

            .brand-icon {
                width: 32px;
                height: 32px;
                font-size: 14px;
            }

            .breadcrumb-wrap {
                margin-bottom: 32px;
            }

            .article-meta {
                gap: 10px;
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-top {
                grid-template-columns: 1fr;
                padding: 48px 0 32px;
            }

            .footer-bottom {
                padding: 20px 0;
            }

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

            .custom-accordion .accordion-button {
                font-size: 15px;
                padding: 20px 40px 20px 0;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #0B0E14;
            --bg-panel: #151B26;
            --bg-card: #1B2230;
            --accent-cyan: #00E0C6;
            --accent-pink: #FF2E88;
            --accent-orange: #FF6B4A;
            --text-main: #F2F5F8;
            --text-sub: #9AA8B9;
            --text-dim: #5C6A7E;
            --border: rgba(255, 255, 255, 0.08);
            --radius: 12px;
            --radius-lg: 16px;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
            --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.4);
            --transition: 0.2s ease;
            --font-main: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --section-space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

        img {
            max-width: 100%;
            height: auto;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        button,
        input {
            font-family: inherit;
        }

        .container {
            max-width: 1240px;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* Header / Nav */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1040;
            background: rgba(11, 14, 20, 0.88);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }

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

        .custom-navbar .navbar-nav {
            gap: 2px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 0;
            padding-bottom: 0;
            margin-right: 28px;
        }

        .brand-icon {
            width: 34px;
            height: 34px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-pink));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            color: #0B0E14;
            flex-shrink: 0;
        }

        .brand-text {
            font-weight: 700;
            font-size: 16px;
            color: var(--text-main);
            letter-spacing: 0.01em;
            white-space: nowrap;
        }

        .custom-navbar .nav-item {
            margin: 0 2px;
        }

        .custom-navbar .nav-link {
            color: var(--text-sub);
            font-size: 14.5px;
            font-weight: 500;
            padding: 10px 16px;
            border-bottom: 2px solid transparent;
            border-radius: 0;
            transition: color var(--transition), border-color var(--transition);
        }

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

        .custom-navbar .nav-link.active {
            color: var(--text-main);
            border-bottom-color: var(--accent-cyan);
            font-weight: 600;
        }

        .nav-cta {
            margin-left: 18px;
            background: linear-gradient(135deg, var(--accent-pink), var(--accent-orange));
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 9px 22px;
            border-radius: 6px;
            border: none;
            transition: filter var(--transition), box-shadow var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            color: #fff;
            filter: brightness(1.1);
            box-shadow: 0 0 18px rgba(255, 46, 136, 0.35);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-main);
            padding: 6px 10px;
            border-radius: 6px;
            line-height: 1;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 224, 198, 0.25);
        }

        .navbar-toggler i {
            font-size: 18px;
        }

        /* Page Hero */
        .page-hero {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(135deg, #0B0E14 30%, rgba(21, 27, 38, 0.92) 70%), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            right: -120px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(0, 224, 198, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            bottom: -160px;
            left: -100px;
            width: 380px;
            height: 380px;
            background: radial-gradient(circle, rgba(255, 46, 136, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .hero-tag {
            display: inline-block;
            font-size: 12.5px;
            font-weight: 600;
            color: var(--accent-pink);
            background: rgba(255, 46, 136, 0.08);
            border: 1px solid rgba(255, 46, 136, 0.4);
            border-radius: 999px;
            padding: 4px 16px;
            letter-spacing: 0.05em;
            margin-bottom: 22px;
        }

        .page-hero h1 {
            font-size: 46px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--text-main);
            letter-spacing: 0.01em;
            max-width: 760px;
            margin-bottom: 20px;
        }

        .page-hero .hero-lead {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-sub);
            max-width: 660px;
            margin-bottom: 34px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            align-items: center;
        }

        .btn-neon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: var(--accent-cyan);
            color: #0B0E14;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: 6px;
            border: none;
            transition: box-shadow var(--transition), transform var(--transition), background var(--transition);
            cursor: pointer;
        }

        .btn-neon:hover {
            color: #0B0E14;
            box-shadow: 0 0 24px rgba(0, 224, 198, 0.35);
            transform: translateY(-2px);
        }

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

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.25);
            font-weight: 500;
            font-size: 15px;
            padding: 11px 26px;
            border-radius: 6px;
            transition: border-color var(--transition), color var(--transition), transform var(--transition);
            cursor: pointer;
        }

        .btn-ghost:hover {
            color: var(--accent-pink);
            border-color: var(--accent-pink);
            transform: translateY(-2px);
        }

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

        /* Section */
        .section {
            padding: var(--section-space) 0;
        }

        .section-tight {
            padding: 72px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 12.5px;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 30px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--text-main);
            letter-spacing: 0.01em;
            margin-top: 48px;
            margin-bottom: 20px;
        }

        .section-desc {
            font-size: 15.5px;
            line-height: 1.9;
            color: var(--text-sub);
            max-width: 720px;
        }

        /* Feature split */
        .feature-split {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .feature-split .feature-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .feature-split .feature-media:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .feature-split .feature-media img {
            width: 100%;
            display: block;
            object-fit: cover;
            min-height: 300px;
        }

        .feature-body {
            padding: 20px 0;
        }

        .feature-body h2 {
            font-size: 27px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 18px;
            margin-top: 0;
        }

        .feature-body p {
            font-size: 15.5px;
            line-height: 1.9;
            color: var(--text-sub);
            margin-bottom: 16px;
        }

        .feature-list {
            list-style: none;
            padding: 0;
            margin: 20px 0 0;
        }

        .feature-list li {
            position: relative;
            padding-left: 28px;
            margin-bottom: 12px;
            font-size: 14.5px;
            color: var(--text-main);
            line-height: 1.7;
        }

        .feature-list li::before {
            content: "\f058";
            font-family: "Font Awesome 6 Free";
            font-weight: 400;
            position: absolute;
            left: 0;
            top: 1px;
            color: var(--accent-cyan);
            font-size: 16px;
        }

        /* Steps */
        .steps-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .steps-wrap {
            position: relative;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-top: 34px;
        }

        .steps-wrap::before {
            content: "";
            position: absolute;
            top: 32px;
            left: 60px;
            right: 60px;
            height: 2px;
            background: linear-gradient(90deg, rgba(0, 224, 198, 0.5), rgba(255, 46, 136, 0.5), rgba(0, 224, 198, 0.5));
            border-radius: 2px;
            z-index: 0;
        }

        .step-item {
            position: relative;
            z-index: 1;
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 22px 24px;
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        .step-item:hover {
            border-color: rgba(0, 224, 198, 0.35);
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .step-number {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), rgba(0, 224, 198, 0.3));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            color: #0B0E14;
            box-shadow: 0 0 18px rgba(0, 224, 198, 0.25);
        }

        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 13.5px;
            color: var(--text-sub);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Cards */
        .cards-section {
            background: var(--bg-deep);
        }

        .cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 36px;
        }

        .feature-card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 28px;
            transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
        }

        .feature-card:hover {
            border-color: rgba(0, 224, 198, 0.3);
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }

        .feature-card .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: rgba(0, 224, 198, 0.12);
            color: var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--text-sub);
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-section {
            background: var(--bg-panel);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .faq-wrap {
            max-width: 860px;
            margin: 32px auto 0;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .faq-item:focus-within,
        .faq-item:hover {
            border-color: rgba(0, 224, 198, 0.3);
            box-shadow: var(--shadow);
        }

        .faq-item .accordion-button {
            background: transparent;
            color: var(--text-main);
            font-size: 16px;
            font-weight: 600;
            padding: 20px 22px;
            border: none;
            box-shadow: none;
            text-align: left;
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .faq-item .accordion-button:not(.collapsed) {
            color: var(--accent-cyan);
            background: rgba(0, 224, 198, 0.04);
        }

        .faq-item .accordion-button::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            background-image: none;
            width: auto;
            height: auto;
            color: var(--text-sub);
            margin-left: auto;
            transition: transform var(--transition), color var(--transition);
            flex-shrink: 0;
        }

        .faq-item .accordion-button:not(.collapsed)::after {
            content: "\f068";
            color: var(--accent-cyan);
            transform: none;
        }

        .faq-item .accordion-body {
            padding: 0 22px 20px;
            color: var(--text-sub);
            font-size: 14.5px;
            line-height: 1.9;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            margin-top: 0;
        }

        /* CTA */
        .cta-section {
            position: relative;
            padding: 96px 0;
            background: linear-gradient(135deg, rgba(11, 14, 20, 0.94), rgba(21, 27, 38, 0.9)), url('/assets/images/backpic/back-3.png') center / cover no-repeat;
            border-top: 1px solid var(--border);
            overflow: hidden;
        }

        .cta-section::before {
            content: "";
            position: absolute;
            top: -50%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 300px;
            background: radial-gradient(ellipse, rgba(255, 46, 136, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-inner {
            text-align: center;
            position: relative;
            z-index: 2;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 32px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 16px;
            margin-top: 0;
        }

        .cta-inner p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-sub);
            margin-bottom: 30px;
        }

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

        /* Footer */
        .site-footer {
            background: var(--bg-deep);
            padding: 64px 0 0;
            border-top: 1px solid transparent;
        }

        .site-footer .container {
            position: relative;
        }

        .site-footer .container::before {
            content: "";
            position: absolute;
            top: 0;
            left: 24px;
            right: 24px;
            height: 1px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-pink));
            opacity: 0.6;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 40px;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
        }

        .footer-logo-icon {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-pink));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: #0B0E14;
        }

        .footer-brand .footer-logo span:last-child {
            font-weight: 700;
            font-size: 16px;
            color: var(--text-main);
        }

        .footer-brand p {
            font-size: 13.5px;
            line-height: 1.8;
            color: var(--text-sub);
            margin: 12px 0 0;
            max-width: 280px;
        }

        .footer-col h3 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
        }

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

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul a {
            font-size: 13.5px;
            color: var(--text-sub);
            line-height: 1.6;
        }

        .footer-col ul a:hover {
            color: var(--accent-cyan);
        }

        .footer-info p {
            font-size: 13.5px;
            color: var(--text-sub);
            line-height: 1.8;
            margin-bottom: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            text-align: center;
        }

        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 991px) {
            .brand-text {
                font-size: 15px;
            }

            .custom-navbar .navbar-collapse {
                background: var(--bg-deep);
                padding: 16px 0;
                border-top: 1px solid var(--border);
                margin-top: 8px;
            }

            .custom-navbar .nav-link {
                border-bottom: none;
                border-left: 2px solid transparent;
                padding: 12px 16px;
            }

            .custom-navbar .nav-link.active {
                border-bottom: none;
                border-left-color: var(--accent-cyan);
            }

            .nav-cta {
                margin-left: 0;
                margin-top: 12px;
                width: 100%;
                justify-content: center;
            }

            .page-hero {
                padding: 90px 0 70px;
            }

            .page-hero h1 {
                font-size: 38px;
            }

            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            :root {
                --section-space: 64px;
            }

            .page-hero {
                padding: 70px 0 56px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero .hero-lead {
                font-size: 15px;
            }

            .section-title {
                font-size: 24px;
            }

            .steps-wrap {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .steps-wrap::before {
                display: none;
            }

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

            .cta-inner h2 {
                font-size: 24px;
            }

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

        @media (max-width: 575px) {
            .container {
                padding-left: 18px;
                padding-right: 18px;
            }

            .hero-actions .btn-neon,
            .hero-actions .btn-ghost {
                width: 100%;
            }

            .feature-split .feature-media img {
                min-height: 220px;
            }

            .feature-body {
                padding: 16px 0 0;
            }
        }

        .no-wrap {
            white-space: nowrap;
        }