/* roulang page: index */
:root {
            --primary: #00e5ff;
            --secondary: #a855f7;
            --accent: #fbbf24;
            --bg: #0b0f1a;
            --bg-2: #111827;
            --bg-3: #1e293b;
            --text: #e5e7eb;
            --text-muted: #94a3b8;
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.16);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 12px 35px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.5);
            --transition: all 0.25s ease;
            --gradient: linear-gradient(135deg, #00e5ff, #a855f7);
            --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

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

        ul {
            list-style: none;
        }

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

        .grid-container {
            max-width: 1200px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(11, 15, 26, 0.88);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            transition: var(--transition);
        }

        .site-header:hover {
            border-bottom-color: rgba(0, 229, 255, 0.25);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 74px;
            padding: 0 20px;
        }

        .logo {
            display: flex;
            align-items: baseline;
            gap: 4px;
            white-space: nowrap;
        }

        .logo-main {
            font-size: 24px;
            font-weight: 800;
            letter-spacing: -0.5px;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .logo-sub {
            font-size: 15px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 1px;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 10px;
            margin: 0;
            padding: 0;
        }

        .nav-links > li {
            position: relative;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 18px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border: 1px solid transparent;
            transition: var(--transition);
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--primary);
            background: rgba(0, 229, 255, 0.08);
            border-color: rgba(0, 229, 255, 0.25);
        }

        .nav-link.active {
            font-weight: 600;
            box-shadow: 0 0 20px rgba(0, 229, 255, 0.15);
        }

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

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 22px;
            border-radius: 50px;
            background: var(--gradient);
            color: #0b0f1a;
            font-weight: 700;
            font-size: 14px;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 18px rgba(0, 229, 255, 0.3);
            transition: var(--transition);
        }

        .header-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 229, 255, 0.45);
            color: #0b0f1a;
        }

        /* Mega Panel */
        .mega-panel {
            position: absolute;
            top: calc(100% + 10px);
            right: -10px;
            width: 300px;
            background: var(--bg-2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 18px;
            box-shadow: var(--shadow-lg);
            opacity: 0;
            transform: translateY(12px);
            pointer-events: none;
            transition: var(--transition);
            z-index: 100;
        }

        .nav-links > li:hover .mega-panel {
            opacity: 1;
            transform: translateY(0);
            pointer-events: auto;
        }

        .panel-title {
            font-size: 13px;
            font-weight: 700;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 12px;
            padding-bottom: 8px;
            border-bottom: 1px solid var(--border);
        }

        .panel-grid {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .panel-card {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .panel-card:hover {
            background: rgba(0, 229, 255, 0.06);
            border-color: rgba(0, 229, 255, 0.3);
            transform: translateX(4px);
        }

        .panel-card i {
            font-size: 20px;
            color: var(--primary);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 255, 0.12);
            border-radius: 8px;
        }

        .panel-card-text strong {
            display: block;
            font-size: 14px;
            color: var(--text);
        }

        .panel-card-text span {
            font-size: 12px;
            color: var(--text-muted);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text);
            font-size: 24px;
            cursor: pointer;
        }

        .mobile-menu {
            display: none;
            padding: 16px 20px;
            background: var(--bg-2);
            border-top: 1px solid var(--border);
        }

        .mobile-menu a {
            display: block;
            padding: 14px 12px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            border-radius: 10px;
            border-bottom: 1px solid var(--border);
        }

        .mobile-menu a:hover {
            background: rgba(0, 229, 255, 0.08);
            color: var(--primary);
        }

        .mobile-menu .mobile-cta {
            margin-top: 12px;
            text-align: center;
            background: var(--gradient);
            color: #0b0f1a;
            font-weight: 700;
            border: none;
            border-radius: 50px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 110px 0 90px;
            background: linear-gradient(180deg, rgba(11, 15, 26, 0.75), rgba(11, 15, 26, 0.98)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-bottom: 1px solid var(--border);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -20%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(0, 229, 255, 0.15), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.3);
            border-radius: 50px;
            letter-spacing: 0.5px;
            margin-bottom: 18px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero h1 {
            font-size: clamp(34px, 5vw, 56px);
            font-weight: 900;
            line-height: 1.2;
            margin-bottom: 20px;
            color: #fff;
            text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .hero h1 span {
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero p {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.75);
            max-width: 540px;
            margin-bottom: 32px;
        }

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

        .btn-primary,
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 700;
            transition: var(--transition);
        }

        .btn-primary {
            background: var(--gradient);
            color: #0b0f1a;
            box-shadow: 0 4px 24px rgba(0, 229, 255, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 34px rgba(0, 229, 255, 0.5);
            color: #0b0f1a;
        }

        .btn-secondary {
            background: rgba(255, 255, 255, 0.05);
            color: var(--text);
            border: 1px solid var(--border-strong);
            backdrop-filter: blur(8px);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: var(--primary);
            color: var(--primary);
        }

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

        .hero-visual img {
            border-radius: 24px;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.5);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transform: rotate(2deg);
            transition: var(--transition);
        }

        .hero-visual img:hover {
            transform: rotate(0deg) scale(1.02);
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--bg-2);
            padding: 50px 0;
            border-bottom: 1px solid var(--border);
        }

        .stat-item {
            text-align: center;
            padding: 20px 16px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            transition: var(--transition);
        }

        .stat-item:hover {
            background: rgba(0, 229, 255, 0.05);
            border-color: rgba(0, 229, 255, 0.3);
            transform: translateY(-4px);
        }

        .stat-item strong {
            display: block;
            font-size: 40px;
            font-weight: 900;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }

        .stat-item span {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 4px;
            display: block;
        }

        /* ===== Section Shared ===== */
        .section-padding {
            padding: 90px 0;
        }

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 50px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--primary);
            background: rgba(0, 229, 255, 0.1);
            border: 1px solid rgba(0, 229, 255, 0.25);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-head h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg);
            padding: 90px 0;
        }

        .feature-card {
            height: 100%;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient);
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }

        .feature-card:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(0, 229, 255, 0.35);
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 60px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            background: rgba(0, 229, 255, 0.12);
            color: var(--primary);
            border-radius: 14px;
            margin-bottom: 20px;
            transition: var(--transition);
        }

        .feature-card:hover .feature-icon {
            background: var(--gradient);
            color: #0b0f1a;
            transform: scale(1.08);
        }

        .feature-card h3 {
            font-size: 18px;
            color: #fff;
            margin-bottom: 10px;
            font-weight: 700;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== About ===== */
        .about-section {
            background: var(--bg-2);
            padding: 90px 0;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .about-media img {
            border-radius: 20px;
            box-shadow: var(--shadow-lg);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .about-content {
            padding-left: 30px;
        }

        .about-content h2 {
            font-size: 34px;
            color: #fff;
            font-weight: 800;
            margin: 12px 0 16px;
        }

        .about-content > p {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

        .about-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text);
            font-size: 15px;
        }

        .about-list li i {
            margin-top: 5px;
            color: var(--primary);
            font-size: 16px;
        }

        /* ===== Category ===== */
        .category-section {
            background: var(--bg);
            padding: 90px 0;
        }

        .category-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            transition: var(--transition);
        }

        .category-card:hover {
            transform: translateY(-6px);
            border-color: rgba(168, 85, 247, 0.5);
            box-shadow: var(--shadow-lg);
        }

        .category-card img {
            height: 180px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .category-card:hover img {
            transform: scale(1.05);
        }

        .category-card .category-body {
            padding: 24px;
            flex: 1;
        }

        .category-card h3 {
            font-size: 20px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .category-card p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .category-card .arrow-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 12px;
            color: var(--secondary);
            font-weight: 600;
            font-size: 14px;
        }

        .category-card:hover .arrow-link {
            color: var(--primary);
        }

        /* ===== News ===== */
        .news-section {
            background: var(--bg-2);
            padding: 90px 0;
            border-top: 1px solid var(--border);
        }

        .news-card {
            display: flex;
            flex-direction: column;
            height: 100%;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 22px;
            transition: var(--transition);
        }

        .news-card:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: rgba(0, 229, 255, 0.35);
            transform: translateY(-4px);
            box-shadow: var(--shadow);
        }

        .news-cat {
            align-self: flex-start;
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(251, 191, 36, 0.1);
            border: 1px solid rgba(251, 191, 36, 0.3);
            padding: 3px 12px;
            border-radius: 50px;
            margin-bottom: 14px;
        }

        .news-card h3 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.5;
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }

        .news-card time {
            display: block;
            font-size: 12px;
            color: var(--text-muted);
            opacity: 0.8;
            margin-top: 14px;
        }

        .news-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 10px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
        }

        .news-empty {
            text-align: center;
            padding: 40px;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.03);
            border: 1px dashed var(--border);
            border-radius: var(--radius);
        }

        /* ===== Process ===== */
        .process-section {
            background: var(--bg);
            padding: 90px 0;
        }

        .process-step {
            position: relative;
            text-align: center;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 20px;
            height: 100%;
            transition: var(--transition);
        }

        .process-step:hover {
            border-color: rgba(168, 85, 247, 0.45);
            transform: translateY(-5px);
            box-shadow: var(--shadow);
        }

        .step-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 50px;
            height: 50px;
            margin: 0 auto 16px;
            font-size: 22px;
            font-weight: 900;
            color: #0b0f1a;
            background: var(--gradient);
            border-radius: 50%;
            box-shadow: 0 4px 18px rgba(0, 229, 255, 0.3);
        }

        .process-step h3 {
            font-size: 18px;
            color: #fff;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--bg-2);
            padding: 90px 0;
            border-top: 1px solid var(--border);
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 229, 255, 0.3);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            text-align: left;
            transition: var(--transition);
        }

        .faq-q i {
            font-size: 14px;
            color: var(--primary);
            transition: transform 0.3s ease;
        }

        .faq-item.active .faq-q i {
            transform: rotate(180deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 24px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.active .faq-a {
            max-height: 200px;
            padding-bottom: 20px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(11, 15, 26, 0.85), rgba(17, 24, 39, 0.9)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            text-align: center;
            border-top: 1px solid var(--border);
        }

        .cta-section h2 {
            font-size: clamp(28px, 4vw, 42px);
            color: #fff;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
            max-width: 540px;
            margin: 0 auto 28px;
        }

        .cta-section .btn-primary {
            font-size: 17px;
            padding: 16px 38px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #070a12;
            border-top: 1px solid var(--border);
        }

        .footer-top {
            padding: 60px 0 40px;
        }

        .footer-brand .logo {
            margin-bottom: 14px;
        }

        .footer-brand p {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }

        .site-footer h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

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

        .site-footer ul a {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
            transition: var(--transition);
        }

        .site-footer ul a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            text-align: center;
            color: rgba(255, 255, 255, 0.35);
            font-size: 13px;
        }

        /* ===== Focus ===== */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
            border-radius: 6px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero {
                padding: 80px 0 60px;
            }

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

            .about-content {
                padding-left: 0;
                margin-top: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-links,
            .header-cta {
                display: none;
            }

            .mobile-toggle {
                display: inline-flex;
            }

            .mobile-menu {
                display: block;
            }

            .hero {
                padding: 60px 0 40px;
            }

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

            .stat-item strong {
                font-size: 30px;
            }

            .section-padding,
            .features-section,
            .about-section,
            .category-section,
            .news-section,
            .process-section,
            .faq-section,
            .cta-section {
                padding: 60px 0;
            }

            .section-head {
                margin-bottom: 30px;
            }

            .footer-top {
                padding: 40px 0 20px;
            }

            .site-footer h4 {
                margin-top: 20px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                min-height: 62px;
            }

            .logo-main {
                font-size: 20px;
            }

            .logo-sub {
                font-size: 13px;
            }

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

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn-primary,
            .btn-secondary {
                justify-content: center;
            }

            .faq-q {
                font-size: 14px;
                padding: 16px 16px;
            }

            .faq-a {
                padding: 0 16px;
            }
        }

/* roulang page: category1 */
:root {
            --bg: #0a0e17;
            --bg-soft: #0f1524;
            --panel: #121a2c;
            --card: #151e33;
            --card-hover: #1a2540;
            --border: rgba(255, 255, 255, 0.08);
            --border-strong: rgba(255, 255, 255, 0.16);
            --text: #e8edf7;
            --muted: #9aa7bd;
            --weak: #6b7790;
            --primary: #22d3ee;
            --primary-2: #38bdf8;
            --accent: #a78bfa;
            --hot: #ff4d8f;
            --grad: linear-gradient(135deg, #22d3ee, #a78bfa);
            --grad-hot: linear-gradient(135deg, #ff4d8f, #a78bfa);
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 0 1px rgba(34, 211, 238, 0.25), 0 18px 50px rgba(34, 211, 238, 0.12);
            --space: 96px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            background-image:
                radial-gradient(circle at 15% 10%, rgba(34, 211, 238, 0.08), transparent 40%),
                radial-gradient(circle at 85% 30%, rgba(167, 139, 250, 0.09), transparent 45%),
                radial-gradient(circle at 50% 90%, rgba(255, 77, 143, 0.05), transparent 40%);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
        }

        a:hover {
            color: #fff;
        }

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

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

        ul, ol {
            list-style: none;
        }

        .grid-container {
            max-width: 1220px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(10, 14, 23, 0.86);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }

        .logo {
            display: inline-flex;
            flex-direction: column;
            line-height: 1.25;
            flex-shrink: 0;
        }

        .logo .logo-main {
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(135deg, #22d3ee, #a78bfa);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            letter-spacing: 0.5px;
        }

        .logo .logo-sub {
            font-size: 12px;
            color: var(--muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            margin: 0;
        }

        .nav-links > li {
            position: relative;
            margin: 0;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 16px;
            border-radius: 999px;
            color: var(--muted);
            font-weight: 500;
            font-size: 15px;
            border: 1px solid transparent;
            transition: all 0.25s ease;
        }

        .nav-link i {
            font-size: 14px;
        }

        .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--border);
        }

        .nav-link.active {
            color: #fff;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(167, 139, 250, 0.18));
            border-color: rgba(34, 211, 238, 0.35);
            box-shadow: 0 0 20px rgba(34, 211, 238, 0.12);
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 10px);
            left: 50%;
            transform: translateX(-50%) translateY(8px);
            min-width: 340px;
            background: rgba(18, 26, 44, 0.98);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 18px;
            opacity: 0;
            visibility: hidden;
            transition: all 0.25s ease;
            backdrop-filter: blur(16px);
        }

        .nav-links > li:hover .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateX(-50%) translateY(0);
        }

        .panel-title {
            font-size: 12px;
            color: var(--weak);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .panel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .panel-card {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 12px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid transparent;
            border-radius: var(--radius-sm);
            color: var(--text);
            transition: all 0.25s ease;
        }

        .panel-card i {
            font-size: 16px;
            color: var(--primary);
            margin-top: 3px;
        }

        .panel-card-text {
            display: flex;
            flex-direction: column;
            font-size: 12px;
            color: var(--muted);
        }

        .panel-card-text strong {
            color: var(--text);
            font-size: 13px;
            margin-bottom: 2px;
        }

        .panel-card:hover {
            background: rgba(34, 211, 238, 0.08);
            border-color: rgba(34, 211, 238, 0.25);
            transform: translateY(-2px);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 20px;
            background: var(--grad);
            color: #08111f;
            font-weight: 700;
            border-radius: 999px;
            font-size: 14px;
            box-shadow: 0 6px 22px rgba(34, 211, 238, 0.28);
            transition: all 0.25s ease;
            flex-shrink: 0;
        }

        .header-cta:hover {
            color: #08111f;
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(34, 211, 238, 0.4);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 20px;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }

        .mobile-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .mobile-menu {
            display: none;
            padding: 16px 20px 24px;
            border-top: 1px solid var(--border);
            background: rgba(10, 14, 23, 0.98);
        }

        .mobile-menu a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 13px 4px;
            color: var(--text);
            border-bottom: 1px solid var(--border);
            font-weight: 500;
        }

        .mobile-menu a:last-child {
            border-bottom: none;
        }

        .mobile-menu .mobile-cta {
            margin-top: 12px;
            background: var(--grad);
            color: #08111f;
            justify-content: center;
            border-radius: var(--radius-sm);
            font-weight: 700;
            padding: 13px;
        }

        .mobile-menu.show {
            display: block;
        }

        .page-hero {
            position: relative;
            padding: 110px 0 90px;
            background-size: cover;
            background-position: center;
            border-bottom: 1px solid var(--border);
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 14, 23, 0.94) 0%, rgba(10, 14, 23, 0.82) 50%, rgba(10, 14, 23, 0.72) 100%);
            z-index: 1;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--weak);
            margin-bottom: 24px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb i {
            font-size: 10px;
            color: var(--weak);
        }

        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(34, 211, 238, 0.1);
            border: 1px solid rgba(34, 211, 238, 0.3);
            border-radius: 999px;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .page-hero h1 {
            font-size: clamp(30px, 4.2vw, 48px);
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }

        .page-hero h1 span {
            background: var(--grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-lead {
            font-size: 17px;
            color: var(--muted);
            max-width: 640px;
            line-height: 1.8;
            margin-bottom: 30px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 30px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.25s ease;
        }

        .btn-primary {
            background: var(--grad);
            color: #08111f;
            box-shadow: 0 8px 26px rgba(34, 211, 238, 0.3);
        }

        .btn-primary:hover {
            color: #08111f;
            transform: translateY(-2px);
            box-shadow: 0 12px 34px rgba(34, 211, 238, 0.42);
        }

        .btn-ghost {
            background: rgba(255, 255, 255, 0.04);
            color: var(--text);
            border-color: var(--border-strong);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.09);
            border-color: rgba(34, 211, 238, 0.4);
            transform: translateY(-2px);
        }

        .hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 13px;
            color: var(--muted);
        }

        .tag i {
            color: var(--primary);
            font-size: 11px;
        }

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

        .section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-head {
            max-width: 720px;
            margin: 0 auto 52px;
            text-align: center;
        }

        .section-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }

        .section-eyebrow::before,
        .section-eyebrow::after {
            content: "";
            width: 24px;
            height: 1px;
            background: var(--grad);
        }

        .section-head h2 {
            font-size: clamp(26px, 3vw, 36px);
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-head p {
            color: var(--muted);
            font-size: 16px;
            line-height: 1.8;
        }

        .entry-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px 26px;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .entry-card::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--grad);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .entry-card:hover {
            background: var(--card-hover);
            border-color: rgba(34, 211, 238, 0.3);
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }

        .entry-card:hover::after {
            opacity: 1;
        }

        .card-icon {
            width: 54px;
            height: 54px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: rgba(34, 211, 238, 0.12);
            border: 1px solid rgba(34, 211, 238, 0.2);
            font-size: 20px;
            color: var(--primary);
            margin-bottom: 20px;
            transition: all 0.3s ease;
        }

        .entry-card:hover .card-icon {
            background: var(--grad);
            color: #08111f;
            box-shadow: 0 8px 24px rgba(34, 211, 238, 0.35);
        }

        .entry-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .entry-card p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
            margin-bottom: 18px;
            flex: 1;
        }

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

        .card-link i {
            transition: transform 0.25s ease;
        }

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

        .steps-section .grid-x {
            align-items: center;
        }

        .steps-media {
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            position: relative;
        }

        .steps-media img {
            width: 100%;
            object-fit: cover;
        }

        .steps-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(10, 14, 23, 0.7));
            pointer-events: none;
        }

        .steps-list {
            margin: 0;
            padding: 0;
        }

        .step-item {
            display: flex;
            gap: 20px;
            padding: 22px 0;
            border-bottom: 1px solid var(--border);
            position: relative;
        }

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

        .step-num {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 14px;
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.14), rgba(167, 139, 250, 0.14));
            border: 1px solid rgba(34, 211, 238, 0.25);
            font-weight: 800;
            color: var(--primary);
            font-size: 18px;
        }

        .step-body h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .step-body p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
        }

        .stats-band {
            background: linear-gradient(135deg, rgba(34, 211, 238, 0.08), rgba(167, 139, 250, 0.1), rgba(255, 77, 143, 0.06));
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 24px;
            padding: 44px 34px;
            position: relative;
            overflow: hidden;
        }

        .stats-band::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -80px;
            width: 220px;
            height: 220px;
            background: radial-gradient(circle, rgba(34, 211, 238, 0.2), transparent 70%);
        }

        .stat-block {
            text-align: center;
            padding: 20px 10px;
        }

        .stat-num {
            font-size: 40px;
            font-weight: 800;
            background: var(--grad);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .stat-label {
            color: var(--muted);
            font-size: 14px;
        }

        .platform-wrap {
            margin-top: 36px;
            text-align: center;
        }

        .platform-title {
            font-size: 13px;
            color: var(--weak);
            letter-spacing: 2px;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .platform-badges {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 12px;
        }

        .platform-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 9px 18px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 14px;
            color: var(--text);
            transition: all 0.25s ease;
        }

        .platform-badge i {
            color: var(--primary);
        }

        .platform-badge:hover {
            border-color: rgba(34, 211, 238, 0.4);
            background: rgba(34, 211, 238, 0.08);
            transform: translateY(-2px);
        }

        .guide-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            height: 100%;
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: var(--shadow);
        }

        .guide-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
        }

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

        .guide-card:hover .guide-cover img {
            transform: scale(1.05);
        }

        .guide-cover .cover-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            padding: 4px 12px;
            background: rgba(10, 14, 23, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(34, 211, 238, 0.35);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            border-radius: 999px;
        }

        .guide-body {
            padding: 22px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .guide-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 10px;
        }

        .guide-body p {
            color: var(--muted);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
            margin-bottom: 18px;
        }

        .guide-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-top: 1px solid var(--border);
            padding-top: 16px;
            font-size: 13px;
            color: var(--weak);
        }

        .guide-meta i {
            font-size: 12px;
            margin-right: 4px;
        }

        .guide-meta .read-more {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
        }

        .safety-panel {
            background: linear-gradient(135deg, rgba(255, 77, 143, 0.06), rgba(34, 211, 238, 0.06));
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 24px;
            padding: 44px 40px;
        }

        .safety-panel .section-head {
            text-align: left;
            margin: 0 0 30px;
        }

        .safety-panel .section-eyebrow::before,
        .safety-panel .section-eyebrow::after {
            display: none;
        }

        .safety-list li {
            display: flex;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            align-items: flex-start;
        }

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

        .safety-list .list-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            background: rgba(255, 77, 143, 0.12);
            border: 1px solid rgba(255, 77, 143, 0.25);
            color: #ff6fa9;
            font-size: 14px;
        }

        .safety-list .list-body h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 4px;
        }

        .safety-list .list-body p {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }

        .tips-side {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 30px;
            height: 100%;
        }

        .tips-side .tips-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 18px;
        }

        .tips-side .tips-header i {
            font-size: 22px;
            color: var(--primary);
        }

        .tips-side .tips-header h4 {
            font-size: 17px;
            font-weight: 700;
        }

        .tips-side ul li {
            position: relative;
            padding: 10px 0 10px 26px;
            color: var(--muted);
            font-size: 14px;
            border-bottom: 1px solid var(--border);
            line-height: 1.7;
        }

        .tips-side ul li:last-child {
            border-bottom: none;
        }

        .tips-side ul li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 10px;
            color: var(--primary);
            font-size: 12px;
        }

        .faq-item {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }

        .faq-item.open {
            border-color: rgba(34, 211, 238, 0.3);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
        }

        .faq-q {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 20px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            color: var(--text);
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
        }

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

        .faq-q .faq-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border);
            border-radius: 8px;
            font-size: 13px;
            color: var(--primary);
            transition: all 0.3s ease;
        }

        .faq-item.open .faq-icon i {
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-a-inner {
            padding: 0 22px 20px;
            color: var(--muted);
            font-size: 14px;
            line-height: 1.8;
        }

        .cta-band {
            position: relative;
            border-radius: 28px;
            padding: 60px 40px;
            background-size: cover;
            background-position: center;
            text-align: center;
            overflow: hidden;
            border: 1px solid var(--border);
        }

        .cta-band::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(10, 14, 23, 0.92), rgba(18, 26, 44, 0.84));
            z-index: 1;
        }

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

        .cta-band h2 {
            font-size: clamp(24px, 3vw, 34px);
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-band p {
            color: var(--muted);
            font-size: 16px;
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-band .btn {
            margin: 0 6px;
        }

        .site-footer {
            background: #070b13;
            border-top: 1px solid var(--border);
            padding: 64px 0 0;
            margin-top: 20px;
        }

        .footer-top {
            padding-bottom: 44px;
        }

        .footer-brand .logo {
            margin-bottom: 18px;
        }

        .footer-brand p {
            color: var(--weak);
            font-size: 14px;
            line-height: 1.8;
            max-width: 340px;
        }

        .site-footer h4 {
            color: var(--text);
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 18px;
        }

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

        .site-footer ul li a {
            color: var(--weak);
            font-size: 14px;
            transition: all 0.2s ease;
        }

        .site-footer ul li a:hover {
            color: var(--primary);
            padding-left: 4px;
        }

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

        .footer-bottom p {
            color: var(--weak);
            font-size: 13px;
        }

        button:focus,
        a:focus {
            outline: 2px solid rgba(34, 211, 238, 0.6);
            outline-offset: 2px;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 2px;
            }

            .nav-link {
                padding: 10px 10px;
                font-size: 14px;
            }

            .header-cta {
                padding: 9px 14px;
                font-size: 13px;
            }

            .logo .logo-main {
                font-size: 20px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space: 64px;
            }

            .nav-links,
            .header-cta {
                display: none;
            }

            .mobile-toggle {
                display: flex;
            }

            .page-hero {
                padding: 80px 0 64px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

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

            .step-item {
                padding: 18px 0;
            }

            .safety-panel {
                padding: 30px 24px;
            }

            .cta-band {
                padding: 48px 24px;
            }

            .cta-band .btn {
                margin-bottom: 10px;
            }

            .footer-top .cell {
                margin-bottom: 30px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 66px;
            }

            .logo .logo-main {
                font-size: 18px;
            }

            .logo .logo-sub {
                font-size: 10px;
            }

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

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

            .section-head h2 {
                font-size: 24px;
            }

            .stat-num {
                font-size: 32px;
            }

            .guide-body h3 {
                font-size: 16px;
            }

            .mega-panel {
                display: none;
            }
        }

/* roulang page: article */
/* ============ 设计变量 ============ */
:root {
  --primary: #00e0ff;
  --primary-dark: #0891b2;
  --primary-glow: rgba(0, 224, 255, 0.35);
  --accent: #8b5cf6;
  --accent-glow: rgba(139, 92, 246, 0.3);
  --gold: #f5c451;
  --bg-deep: #060b16;
  --bg-app: #0a111f;
  --bg-card: #101a2e;
  --bg-card-hover: #16253f;
  --bg-soft: #0e1728;
  --border: #1c2a44;
  --border-light: #2b3d60;
  --text-main: #e9eef7;
  --text-weak: #94a3b8;
  --text-faint: #5f6d82;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --shadow-card: 0 12px 36px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 18px 48px rgba(0, 224, 255, 0.10);
  --shadow-cta: 0 12px 40px rgba(139, 92, 246, 0.3);
  --gradient-dark: linear-gradient(150deg, #0a111f 0%, #101a2e 100%);
  --gradient-hero: linear-gradient(140deg, rgba(6, 11, 22, 0.92), rgba(13, 22, 40, 0.82));
  --gradient-primary: linear-gradient(135deg, #0ea5e9, #8b5cf6);
  --gradient-cta: linear-gradient(135deg, #0ea5e9 0%, #8b5cf6 100%);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============ 基础 Reset ============ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-app);
  color: var(--text-main);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

a:hover {
  color: #8ff4ff;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button, input {
  font-family: inherit;
  border: none;
  outline: none;
}

/* ============ 容器 ============ */
.grid-container {
  max-width: 1260px;
  padding-left: 24px;
  padding-right: 24px;
  margin-left: auto;
  margin-right: auto;
}

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  background: rgba(6, 11, 22, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(43, 61, 96, 0.5);
  box-shadow: 0 6px 30px rgba(0, 0, 0, 0.28);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
  gap: 24px;
}

.logo {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.2;
  padding: 4px 0;
  flex-shrink: 0;
}

.logo-main {
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, #ffffff, var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-shadow: 0 0 30px rgba(0, 224, 255, 0.3);
}

.logo-sub {
  font-size: 0.68rem;
  color: var(--text-weak);
  letter-spacing: 0.22em;
  margin-top: 2px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin: 0;
  padding: 0;
}

.nav-links > li {
  position: relative;
  margin-bottom: 0;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 6px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-weak);
  border-radius: 10px;
  transition: color var(--transition), background var(--transition);
  position: relative;
}

.nav-link:hover {
  color: #ffffff;
  background: rgba(0, 224, 255, 0.06);
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  box-shadow: 0 0 12px var(--primary-glow);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--gradient-primary);
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 11px 22px;
  border-radius: 999px;
  box-shadow: 0 6px 20px var(--shadow-cta);
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  white-space: nowrap;
}

.header-cta:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 28px rgba(139, 92, 246, 0.4);
  color: #ffffff;
  opacity: 0.95;
}

.mobile-toggle {
  display: none;
  background: transparent;
  color: var(--text-main);
  font-size: 1.4rem;
  padding: 10px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: background var(--transition);
}

.mobile-toggle:hover {
  background: rgba(0, 224, 255, 0.08);
}

.mobile-menu {
  display: none;
  background: rgba(9, 15, 28, 0.97);
  border-top: 1px solid var(--border);
  padding: 18px 24px 24px;
  gap: 4px;
}

.mobile-menu a {
  display: block;
  padding: 12px 14px;
  color: var(--text-weak);
  font-size: 1rem;
  border-radius: 10px;
  transition: background var(--transition), color var(--transition);
}

.mobile-menu a:hover {
  background: rgba(0, 224, 255, 0.08);
  color: #ffffff;
}

.mobile-menu .mobile-cta {
  margin-top: 10px;
  background: var(--gradient-primary);
  color: #ffffff;
  font-weight: 700;
  text-align: center;
  box-shadow: 0 6px 18px rgba(139, 92, 246, 0.3);
}

/* ============ Mega Panel ============ */
.mega-panel {
  position: absolute;
  top: calc(100% + 14px);
  left: -40px;
  background: rgba(15, 24, 44, 0.98);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  width: 520px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(16px);
  z-index: 50;
}

.nav-links li:hover .mega-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.panel-title {
  font-size: 0.8rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
  margin-bottom: 14px;
  font-weight: 600;
}

.panel-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.panel-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(43, 61, 96, 0.5);
  border-radius: 12px;
  transition: all var(--transition);
}

.panel-card > i {
  font-size: 1.2rem;
  color: var(--primary);
  width: 24px;
  text-align: center;
}

.panel-card:hover {
  background: rgba(0, 224, 255, 0.07);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.panel-card-text {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.panel-card-text strong {
  font-size: 0.86rem;
  color: var(--text-main);
}

.panel-card-text span {
  font-size: 0.75rem;
  color: var(--text-faint);
}

/* ============ 文章 Hero ============ */
.article-hero {
  position: relative;
  padding: 80px 0 70px;
  background: linear-gradient(rgba(6, 11, 22, 0.88), rgba(10, 17, 31, 0.93)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.article-hero::before {
  content: "";
  position: absolute;
  top: -160px;
  right: -160px;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(0, 224, 255, 0.16), transparent 70%);
  pointer-events: none;
}

.article-hero::after {
  content: "";
  position: absolute;
  bottom: -200px;
  left: -100px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.14), transparent 70%);
  pointer-events: none;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-weak);
  margin-bottom: 28px;
  position: relative;
  z-index: 2;
}

.breadcrumbs i {
  font-size: 0.7rem;
  color: var(--text-faint);
}

.breadcrumbs a {
  color: var(--text-weak);
  transition: color var(--transition);
}

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

.breadcrumbs .current {
  color: var(--primary);
  font-weight: 500;
  max-width: 360px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.article-hero-inner {
  position: relative;
  z-index: 2;
  max-width: 860px;
}

.badge-cat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #ffffff;
  background: var(--gradient-primary);
  box-shadow: 0 4px 14px rgba(0, 224, 255, 0.25);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
}

.article-hero h1 {
  font-size: clamp(1.75rem, 3.5vw, 2.7rem);
  font-weight: 800;
  line-height: 1.4;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: -0.01em;
}

.article-hero .lead {
  font-size: 1.08rem;
  color: var(--text-weak);
  max-width: 720px;
  line-height: 1.7;
  margin-bottom: 22px;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 22px;
  font-size: 0.85rem;
  color: var(--text-weak);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.article-meta i {
  color: var(--primary);
  font-size: 0.9rem;
}

/* ============ 文章主体 ============ */
.article-body-section {
  padding: 64px 0 70px;
}

.article-main-col {
  min-width: 0;
}

.article-frame {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3.4vw, 40px);
  box-shadow: var(--shadow-card);
}

.article-cover {
  width: 100%;
  border-radius: var(--radius-md);
  margin-bottom: 32px;
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.35);
}

.article-body {
  font-size: 1.03rem;
  line-height: 1.9;
  color: #dfe7f2;
  word-break: break-word;
}

.article-body h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  margin: 2.2rem 0 1.1rem;
  padding-left: 16px;
  border-left: 4px solid var(--primary);
  border-radius: 0 8px 8px 0;
  background: rgba(0, 224, 255, 0.04);
  padding-top: 8px;
  padding-bottom: 8px;
  line-height: 1.5;
}

.article-body h3 {
  font-size: 1.22rem;
  font-weight: 700;
  color: #ffffff;
  margin: 1.9rem 0 0.9rem;
  line-height: 1.5;
}

.article-body h4 {
  font-size: 1.09rem;
  font-weight: 600;
  color: var(--primary);
  margin: 1.6rem 0 0.7rem;
}

.article-body p {
  margin-bottom: 1.3rem;
  color: #dfe7f2;
}

.article-body strong {
  color: #ffffff;
  font-weight: 600;
}

.article-body em {
  color: #c3d0e2;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.4rem 1.5rem;
  color: #dfe7f2;
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

.article-body li {
  margin-bottom: 0.5rem;
  padding-left: 4px;
}

.article-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(0, 224, 255, 0.4);
  transition: text-decoration-color var(--transition), color var(--transition);
}

.article-body a:hover {
  color: #8ff4ff;
  text-decoration-color: #8ff4ff;
}

.article-body blockquote {
  padding: 18px 22px;
  background: rgba(0, 224, 255, 0.05);
  border-left: 4px solid var(--primary);
  border-radius: 0 12px 12px 0;
  color: #c3d0e2;
  font-style: italic;
  margin: 1.6rem 0;
}

.article-body code {
  background: rgba(0, 224, 255, 0.1);
  color: var(--primary);
  padding: 2px 8px;
  border-radius: 6px;
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: 0.92em;
}

.article-body pre {
  background: #060b16;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
  overflow-x: auto;
  margin: 1.6rem 0;
}

.article-body pre code {
  background: transparent;
  color: #a5f0ff;
  padding: 0;
}

.article-body img {
  border-radius: var(--radius-md);
  margin: 1.6rem auto;
  max-width: 100%;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.article-body table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin: 1.6rem 0;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.article-body th,
.article-body td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
}

.article-body th {
  background: var(--bg-card-hover);
  color: #ffffff;
  font-weight: 600;
  border-top: none;
}

.article-body tr:first-child th {
  border-top: 1px solid var(--border);
}

.article-body td {
  color: #c3d0e2;
}

.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

.article-body .aligncenter {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.article-footer-bar {
  margin-top: 36px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.tags-label {
  font-size: 0.84rem;
  color: var(--text-weak);
  font-weight: 600;
}

.article-tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(0, 224, 255, 0.08);
  color: var(--primary);
  border: 1px solid rgba(0, 224, 255, 0.2);
  font-size: 0.78rem;
  font-weight: 500;
  padding: 5px 14px;
  border-radius: 999px;
  transition: all var(--transition);
}

.tag-chip:hover {
  background: rgba(0, 224, 255, 0.16);
  border-color: var(--primary);
  color: #ffffff;
  transform: translateY(-1px);
}

/* ============ 侧边栏 ============ */
.article-sidebar {
  min-width: 0;
}

.widget {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.widget:hover {
  border-color: var(--border-light);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.widget-head {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.widget-head i {
  color: var(--primary);
  font-size: 1.05rem;
}

.widget-access {
  background: linear-gradient(140deg, #101a2e, #152443);
  border: 1px solid rgba(0, 224, 255, 0.2);
  text-align: center;
  padding: 28px 22px;
}

.widget-access .access-icon {
  width: 58px;
  height: 58px;
  margin: 0 auto 14px;
  border-radius: 16px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #ffffff;
  box-shadow: 0 10px 24px rgba(139, 92, 246, 0.35);
}

.widget-access h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.widget-access p {
  font-size: 0.85rem;
  color: var(--text-weak);
  margin-bottom: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 999px;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 6px 20px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 224, 255, 0.35);
  color: #ffffff;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--border-light);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0, 224, 255, 0.05);
}

.btn-block {
  width: 100%;
}

.widget-nav ul {
  padding: 0;
  margin: 0;
}

.widget-nav ul li {
  margin-bottom: 6px;
}

.widget-nav ul a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 0.9rem;
  color: var(--text-weak);
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid transparent;
  transition: all var(--transition);
}

.widget-nav ul a i {
  font-size: 0.75rem;
  color: var(--text-faint);
  transition: color var(--transition), transform var(--transition);
}

.widget-nav ul a:hover {
  color: var(--primary);
  background: rgba(0, 224, 255, 0.05);
  border-color: rgba(0, 224, 255, 0.15);
  transform: translateX(4px);
}

.widget-nav ul a:hover i {
  color: var(--primary);
  transform: translateX(2px);
}

.widget-tags-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.widget-tags-wrap a {
  display: inline-block;
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text-weak);
  transition: all var(--transition);
}

.widget-tags-wrap a:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.widget-cover {
  padding: 0;
  overflow: hidden;
  border: 1px solid var(--border);
}

.widget-cover img {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.widget-cover-content {
  padding: 20px 22px 24px;
}

.widget-cover-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.widget-cover-content p {
  font-size: 0.84rem;
  color: var(--text-weak);
  margin-bottom: 14px;
}

.widget-cover-content .btn {
  font-size: 0.84rem;
  padding: 9px 20px;
}

/* ============ 推荐阅读 ============ */
.related-section {
  padding: 16px 0 40px;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 30px;
  padding-top: 30px;
  border-top: 1px solid var(--border);
}

.section-head h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  margin: 0;
}

.section-head h2 i {
  color: var(--primary);
  margin-right: 8px;
}

.section-head .section-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--border-light), transparent);
}

.related-grid .cell {
  padding-bottom: 0;
}

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
}

.related-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 224, 255, 0.3);
  box-shadow: var(--shadow-hover);
}

.related-card-img {
  position: relative;
  overflow: hidden;
  height: 180px;
}

.related-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.related-card:hover .related-card-img img {
  transform: scale(1.05);
}

.related-card-img::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 11, 22, 0.7), transparent 60%);
}

.related-card-content {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.related-card-content h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 8px;
  transition: color var(--transition);
}

.related-card:hover .related-card-content h3 {
  color: var(--primary);
}

.related-card-content p {
  font-size: 0.84rem;
  color: var(--text-weak);
  line-height: 1.7;
  margin-bottom: 14px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-faint);
  border-top: 1px solid var(--border);
  padding-top: 12px;
}

.related-card-meta .cat {
  color: var(--primary);
  font-weight: 600;
}

/* ============ 使用流程 ============ */
.process-section {
  padding: 50px 0;
  background: var(--bg-deep);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}

.process-section::before {
  content: "";
  position: absolute;
  top: -120px;
  right: 20%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(0, 224, 255, 0.08), transparent 70%);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.process-item {
  text-align: center;
  padding: 30px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.process-item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  opacity: 0.5;
  transition: opacity var(--transition);
}

.process-item:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 224, 255, 0.3);
  box-shadow: var(--shadow-hover);
}

.process-item:hover::before {
  opacity: 1;
}

.process-num {
  position: absolute;
  top: 12px;
  right: 16px;
  font-size: 2.2rem;
  font-weight: 900;
  color: rgba(0, 224, 255, 0.09);
  line-height: 1;
}

.process-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 16px;
  background: rgba(0, 224, 255, 0.1);
  border: 1px solid rgba(0, 224, 255, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.35rem;
  transition: all var(--transition);
}

.process-item:hover .process-icon {
  background: var(--gradient-primary);
  color: #ffffff;
  box-shadow: 0 8px 24px rgba(139, 92, 246, 0.3);
}

.process-item h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.process-item p {
  font-size: 0.84rem;
  color: var(--text-weak);
  line-height: 1.7;
  margin: 0;
}

/* ============ CTA ============ */
.cta-section {
  padding: 54px 0 70px;
}

.cta-banner {
  background: linear-gradient(140deg, #0ea5e9, #8b5cf6);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(139, 92, 246, 0.35);
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}

.cta-banner::after {
  content: "";
  position: absolute;
  bottom: -100px;
  left: -40px;
  width: 200px;
  height: 200px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 50%;
}

.cta-content {
  position: relative;
  z-index: 2;
  flex: 1;
}

.cta-content h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.cta-content p {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
}

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: #ffffff;
  color: #0ea5e9;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 800;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
  transition: all var(--transition);
  white-space: nowrap;
  position: relative;
  z-index: 2;
}

.cta-btn:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.3);
  color: #0891b2;
}

/* ============ 未找到 ============ */
.not-found-panel {
  padding: 100px 0 120px;
  text-align: center;
}

.nf-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  box-shadow: var(--shadow-card);
}

.nf-icon {
  width: 90px;
  height: 90px;
  margin: 0 auto 26px;
  border-radius: 50%;
  background: rgba(0, 224, 255, 0.1);
  border: 2px solid rgba(0, 224, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 2.2rem;
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 224, 255, 0.2); }
  50% { box-shadow: 0 0 0 18px rgba(0, 224, 255, 0); }
}

.nf-card h1 {
  font-size: 1.9rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 12px;
}

.nf-card p {
  font-size: 1rem;
  color: var(--text-weak);
  margin-bottom: 28px;
}

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

.footer-top {
  padding-bottom: 40px;
}

.footer-brand .logo {
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.86rem;
  color: var(--text-weak);
  line-height: 1.8;
  margin-bottom: 0;
  max-width: 360px;
}

.site-footer h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.site-footer ul {
  margin: 0;
  padding: 0;
}

.site-footer ul li {
  margin-bottom: 9px;
}

.site-footer ul a {
  font-size: 0.85rem;
  color: var(--text-weak);
  transition: all var(--transition);
  display: inline-block;
  position: relative;
  padding-left: 16px;
}

.site-footer ul a::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1rem;
  line-height: 1.2;
}

.site-footer ul a:hover {
  color: var(--primary);
  transform: translateX(4px);
}

.footer-bottom {
  border-top: 1px solid rgba(28, 42, 68, 0.7);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-faint);
  margin: 0;
}

/* ============ 响应式断点 ============ */
@media (max-width: 1023.98px) {
  .nav-links {
    display: none;
  }

  .header-cta {
    display: none;
  }

  .mobile-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .mobile-menu.show {
    display: flex;
    flex-direction: column;
  }

  .process-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .process-item {
    padding: 24px 16px;
  }
}

@media (max-width: 767.98px) {
  .grid-container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .article-hero {
    padding: 56px 0 48px;
  }

  .article-hero h1 {
    font-size: 1.55rem;
  }

  .article-meta {
    gap: 12px;
    font-size: 0.78rem;
  }

  .article-body-section {
    padding: 42px 0 50px;
  }

  .article-frame {
    padding: 20px 16px;
    border-radius: 18px;
  }

  .article-body {
    font-size: 1rem;
    line-height: 1.85;
  }

  .article-body h2 {
    font-size: 1.3rem;
  }

  .article-body h3 {
    font-size: 1.1rem;
  }

  .related-card-img {
    height: 160px;
  }

  .cta-section {
    padding: 36px 0 50px;
  }

  .cta-banner {
    flex-direction: column;
    text-align: center;
    padding: 36px 24px;
  }

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

  .footer-top {
    gap: 30px;
  }

  .footer-brand p {
    max-width: 100%;
  }
}

@media (max-width: 519.98px) {
  .grid-container {
    padding-left: 14px;
    padding-right: 14px;
  }

  .logo-main {
    font-size: 1.25rem;
  }

  .logo-sub {
    font-size: 0.6rem;
    letter-spacing: 0.12em;
  }

  .header-inner {
    padding: 10px 0;
    gap: 12px;
  }

  .breadcrumbs {
    font-size: 0.75rem;
    gap: 6px;
  }

  .breadcrumbs .current {
    max-width: 200px;
  }

  .article-hero {
    padding: 44px 0 40px;
  }

  .article-hero h1 {
    font-size: 1.35rem;
    line-height: 1.5;
  }

  .article-hero .lead {
    font-size: 0.92rem;
  }

  .article-frame {
    padding: 16px 12px;
  }

  .article-body {
    font-size: 0.96rem;
  }

  .article-body h2 {
    font-size: 1.15rem;
    padding-left: 12px;
  }

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

  .cta-banner {
    padding: 28px 18px;
    border-radius: 20px;
  }

  .cta-content h2 {
    font-size: 1.2rem;
  }

  .cta-btn {
    font-size: 0.9rem;
    padding: 12px 20px;
  }

  .widget {
    padding: 20px 16px;
  }

  .related-card-content h3 {
    font-size: 0.94rem;
  }

  .nf-card {
    padding: 40px 24px;
  }

  .nf-card h1 {
    font-size: 1.5rem;
  }
}

/* 聚焦可访问性 */
a:focus-visible,
button:focus-visible {
  outline: 3px solid rgba(0, 224, 255, 0.5);
  outline-offset: 2px;
  border-radius: 6px;
}