/* roulang page: index */
:root {
            --bg-primary: #060B16;
            --bg-secondary: #0D1728;
            --bg-tertiary: #04070D;
            --primary: #1E6FFF;
            --primary-light: #3D8BFF;
            --accent: #00E5A0;
            --highlight: #FF6B35;
            --text-main: #EAF0FF;
            --text-secondary: #8FA3C8;
            --text-muted: #5A6D8E;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-card: 20px;
            --radius-btn: 999px;
            --radius-input: 14px;
            --shadow-glow: 0 0 24px rgba(30, 111, 255, 0.35);
            --shadow-card: 0 8px 30px rgba(10, 15, 30, 0.5);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            background: var(--bg-primary);
            color: var(--text-main);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a {
            color: var(--text-main);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        button:focus,
        a:focus,
        input:focus {
            outline: 2px solid rgba(30, 111, 255, 0.7);
            outline-offset: 3px;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1.25rem;
            }
        }

        .section-padding {
            padding: 5rem 0;
        }

        @media (max-width: 768px) {
            .section-padding {
                padding: 3rem 0;
            }
        }

        .section-title {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.125rem;
            margin-top: 0.75rem;
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* 顶部霓虹线 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(6, 11, 22, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.04);
            transition: background 0.3s ease;
        }

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

        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .site-logo {
            font-size: 1.35rem;
            font-weight: 800;
            color: var(--text-main);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .site-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.8);
            display: inline-block;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
        }

        .nav-menu a {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 6px 2px;
            position: relative;
            transition: color 0.3s ease;
        }

        .nav-menu a:hover {
            color: #fff;
        }

        .nav-menu a.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(30, 111, 255, 0.6);
        }

        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            box-shadow: 0 0 10px rgba(30, 111, 255, 0.5);
        }

        .hamburger {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1100;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-main);
            margin: 5px 0;
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        @media (max-width: 768px) {
            .nav-menu {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(6, 11, 22, 0.97);
                backdrop-filter: blur(16px);
                flex-direction: column;
                gap: 0;
                padding: 0;
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
                border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            }

            .nav-menu.open {
                max-height: 480px;
                padding: 1rem 0;
            }

            .nav-menu li {
                width: 100%;
                text-align: center;
            }

            .nav-menu a {
                display: block;
                padding: 14px 24px;
                font-size: 1rem;
            }

            .nav-menu a.active::after {
                bottom: 8px;
                left: 50%;
                right: auto;
                width: 40%;
                transform: translateX(-50%);
            }

            .header-cta {
                display: none;
            }

            .hamburger {
                display: block;
            }
        }

        /* ===== Button ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border-radius: var(--radius-btn);
            padding: 0.75rem 1.75rem;
            font-weight: 600;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #00b87a);
            color: #060B16;
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(0, 229, 160, 0.55);
            color: #060B16;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border: 1px solid rgba(255, 255, 255, 0.35);
            backdrop-filter: blur(6px);
        }

        .btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            box-shadow: 0 0 16px rgba(30, 111, 255, 0.15);
        }

        .btn-blue {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .btn-blue:hover {
            box-shadow: 0 0 32px rgba(30, 111, 255, 0.5);
            transform: translateY(-2px);
            color: #fff;
        }

        /* ===== Glass card ===== */
        .glass-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-card);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 92vh;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(6, 11, 22, 0.95) 0%, rgba(6, 11, 22, 0.8) 45%, rgba(6, 11, 22, 0.35) 100%);
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 160px;
            background: linear-gradient(to bottom, transparent, var(--bg-primary));
            pointer-events: none;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 660px;
            padding-top: 80px;
            padding-bottom: 60px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 24px;
            backdrop-filter: blur(8px);
        }

        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 10px rgba(0, 229, 160, 0.8);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.6;
                transform: scale(0.8);
            }
        }

        .hero h1 {
            font-size: clamp(2.5rem, 6vw, 4.2rem);
            font-weight: 900;
            line-height: 1.12;
            letter-spacing: -0.03em;
            color: #fff;
            margin-bottom: 1.25rem;
        }

        .hero-subtitle {
            font-size: clamp(1rem, 1.5vw, 1.25rem);
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .hero-glass-info {
            position: absolute;
            right: 3rem;
            bottom: 120px;
            z-index: 2;
            padding: 1.25rem 1.5rem;
            border-radius: var(--radius-card);
            min-width: 200px;
            animation: float 6s ease-in-out infinite;
        }

        @keyframes float {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-10px);
            }
        }

        .hero-glass-info .hi-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .hero-glass-info .hi-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 2px;
        }

        @media (max-width: 1024px) {
            .hero-glass-info {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .hero {
                min-height: 88vh;
            }
            .hero-actions .btn {
                width: 100%;
            }
        }

        /* ===== Story ===== */
        .story-grid {
            display: grid;
            grid-template-columns: 7fr 5fr;
            gap: 4rem;
            align-items: center;
        }

        @media (max-width: 1024px) {
            .story-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        .story-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
        }

        .story-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 320px;
        }

        .story-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(0deg, rgba(6, 11, 22, 0.4), transparent 60%);
        }

        /* ===== Directions ===== */
        .directions {
            position: relative;
            background: var(--bg-secondary);
            clip-path: polygon(0 3%, 100% 0, 100% 97%, 0 100%);
            padding: 5.5rem 0;
        }

        @media (max-width: 768px) {
            .directions {
                clip-path: polygon(0 1.5%, 100% 0, 100% 98.5%, 0 100%);
                padding: 3.5rem 0;
            }
        }

        .direction-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
            margin-bottom: 4rem;
        }

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

        .direction-row.reverse {
            direction: rtl;
        }

        .direction-row.reverse>* {
            direction: ltr;
        }

        .direction-text {
            padding: 1rem;
        }

        .direction-text .dir-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(30, 111, 255, 0.15);
            border: 1px solid rgba(30, 111, 255, 0.3);
            color: var(--primary-light);
            border-radius: 999px;
            padding: 4px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }

        .direction-text h3 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: #fff;
        }

        .direction-text p {
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 1.25rem;
        }

        .direction-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 600;
            font-size: 0.95rem;
            transition: gap 0.3s ease;
        }

        .direction-link:hover {
            gap: 10px;
            color: var(--accent);
        }

        .direction-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            position: relative;
        }

        .direction-image img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: var(--radius-card);
            transition: transform 0.5s ease;
        }

        .direction-image:hover img {
            transform: scale(1.03);
        }

        @media (max-width: 768px) {
            .direction-row,
            .direction-row.reverse {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .direction-image img {
                height: 200px;
            }
        }

        /* ===== Cards ===== */
        .card {
            background: var(--bg-secondary);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .card:hover {
            border-color: rgba(30, 111, 255, 0.5);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .card-cover {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: var(--bg-secondary);
        }

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

        .card:hover .card-cover img {
            transform: scale(1.03);
        }

        .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(6, 11, 22, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid var(--glass-border);
            color: var(--text-main);
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 999px;
            z-index: 2;
        }

        .card-body {
            padding: 1.25rem 1.25rem 1.5rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-main);
            margin-bottom: 0.5rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color 0.3s;
        }

        .card:hover .card-body h3 {
            color: var(--primary-light);
        }

        .card-body p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 1rem;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: auto;
            padding-top: 0.75rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .card-link {
            font-size: 0.85rem;
            color: var(--accent);
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap 0.3s;
        }

        .card-link:hover {
            gap: 8px;
            color: var(--accent);
        }

        /* ===== Filter pills ===== */
        .filter-pills {
            display: flex;
            gap: 0.75rem;
            flex-wrap: wrap;
            margin: 1.5rem 0 2rem;
        }

        .pill {
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--glass-border);
            color: var(--text-secondary);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .pill:hover {
            border-color: var(--primary-light);
            color: var(--text-main);
        }

        .pill.active {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            border-color: transparent;
            box-shadow: 0 0 16px rgba(30, 111, 255, 0.3);
        }

        .more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--text-secondary);
            font-weight: 600;
            font-size: 0.95rem;
            margin-top: 2rem;
            transition: all 0.3s ease;
        }

        .more-link:hover {
            color: var(--accent);
            gap: 10px;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: var(--bg-secondary);
            position: relative;
            overflow: hidden;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(30, 111, 255, 0.15), transparent 70%);
            pointer-events: none;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1rem;
            }
        }

        .stat-card {
            text-align: center;
            padding: 2rem 1.5rem;
            border-radius: var(--radius-card);
            background: var(--bg-primary);
            border: 1px solid var(--glass-border);
            box-shadow: 0 0 20px rgba(30, 111, 255, 0.05);
            transition: all 0.3s ease;
        }

        .stat-card:hover {
            border-color: rgba(30, 111, 255, 0.4);
            box-shadow: 0 0 30px rgba(30, 111, 255, 0.15);
            transform: translateY(-3px);
        }

        .stat-number {
            font-size: clamp(2rem, 3vw, 2.8rem);
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 4px;
            background: linear-gradient(180deg, #fff, var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .stat-unit {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent);
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 6px;
        }

        /* ===== FAQ ===== */
        .faq-item {
            background: var(--bg-secondary);
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            margin-bottom: 1rem;
            overflow: hidden;
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
        }

        .faq-item.open {
            border-color: rgba(30, 111, 255, 0.5);
            box-shadow: 0 0 20px rgba(30, 111, 255, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            cursor: pointer;
            user-select: none;
        }

        .faq-q-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9rem;
            font-weight: 800;
            color: #fff;
            box-shadow: 0 0 12px rgba(30, 111, 255, 0.3);
        }

        .faq-question h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            flex: 1;
            line-height: 1.4;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
            transition: transform 0.3s ease;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            background: var(--text-secondary);
            border-radius: 2px;
            transition: background 0.3s;
        }

        .faq-icon::before {
            left: 4px;
            right: 4px;
            top: 9px;
            height: 2px;
        }

        .faq-icon::after {
            top: 4px;
            bottom: 4px;
            left: 9px;
            width: 2px;
        }

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

        .faq-answer {
            padding: 0 1.5rem;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            color: var(--text-secondary);
            line-height: 1.8;
            font-size: 0.95rem;
        }

        .faq-item.open .faq-answer {
            max-height: 320px;
            padding: 0 1.5rem 1.25rem;
        }

        .faq-a-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 8px;
            background: rgba(0, 229, 160, 0.15);
            border: 1px solid rgba(0, 229, 160, 0.3);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--accent);
            margin-right: 8px;
            vertical-align: middle;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            border-radius: 28px;
            overflow: hidden;
            padding: 4rem 2.5rem;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(6, 11, 22, 0.92), rgba(6, 11, 22, 0.65));
        }

        .cta-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            font-weight: 800;
            margin-bottom: 0.75rem;
            color: #fff;
        }

        .cta-content p {
            color: var(--text-secondary);
            margin-bottom: 2rem;
            font-size: 1.05rem;
        }

        .cta-form {
            display: flex;
            gap: 0.75rem;
            max-width: 460px;
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 0.85rem 1.25rem;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.15);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-main);
            font-size: 0.95rem;
            transition: all 0.3s ease;
            backdrop-filter: blur(8px);
        }

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

        .cta-form input:focus {
            outline: none;
            border-color: var(--primary-light);
            box-shadow: 0 0 16px rgba(30, 111, 255, 0.3);
            background: rgba(255, 255, 255, 0.08);
        }

        @media (max-width: 640px) {
            .cta-form {
                flex-direction: column;
            }
            .cta-form .btn {
                width: 100%;
            }
            .cta-section {
                padding: 3rem 1.25rem;
                border-radius: 20px;
            }
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-tertiary);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 4rem 0 2rem;
            margin-top: 5rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        .footer-brand .site-logo {
            margin-bottom: 1rem;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 1.25rem;
        }

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

        .footer-col ul li {
            margin-bottom: 0.6rem;
        }

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color 0.3s ease, padding-left 0.3s ease;
        }

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

        .footer-contact li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 0.75rem;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            margin-top: 3rem;
            padding-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        @media (max-width: 640px) {
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ===== Empty state ===== */
        .empty-state {
            text-align: center;
            padding: 3rem 2rem;
            border: 1px dashed var(--glass-border);
            border-radius: var(--radius-card);
            color: var(--text-secondary);
            font-size: 1rem;
            background: rgba(255, 255, 255, 0.02);
        }

/* roulang page: article */
:root {
            --bg-main: #060B16;
            --bg-panel: #0D1728;
            --bg-deep: #04070D;
            --primary: #1E6FFF;
            --primary-light: #3D8BFF;
            --accent: #00E5A0;
            --accent-orange: #FF6B35;
            --text-main: #EAF0FF;
            --text-secondary: #8FA3C8;
            --text-muted: #5A6D8E;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-card: 20px;
            --radius-btn: 999px;
            --radius-input: 14px;
            --shadow-primary: 0 0 24px rgba(30, 111, 255, 0.35);
            --shadow-card: 0 8px 30px rgba(10, 15, 30, 0.5);
            --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            background: var(--bg-main);
            color: var(--text-main);
            font-family: var(--font-sans);
            line-height: 1.75;
            font-size: 1rem;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.25s ease;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 1.25rem;
            }
        }

        .container-narrow {
            max-width: 768px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 11, 22, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-header::before {
            content: '';
            display: block;
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
            pointer-events: none;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1.5rem;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-main);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .site-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 14px rgba(0, 229, 160, 0.7);
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
        }

        .nav-menu a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 0.4rem 0.1rem;
            transition: color 0.3s;
        }

        .nav-menu a:hover {
            color: #fff;
        }

        .nav-menu a.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(30, 111, 255, 0.5);
        }

        .nav-menu a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.4);
        }

        .header-cta {
            margin-left: 0.5rem;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 0.65rem 1.6rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn-sm {
            padding: 0.45rem 1.2rem;
            font-size: 0.875rem;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 0 24px rgba(30, 111, 255, 0.35);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 34px rgba(30, 111, 255, 0.5);
        }

        .btn-accent {
            background: linear-gradient(135deg, #00E5A0, #00C98B);
            color: #060B16;
            box-shadow: 0 0 28px rgba(0, 229, 160, 0.35);
        }

        .btn-accent:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 36px rgba(0, 229, 160, 0.55);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: var(--text-main);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary-light);
            box-shadow: 0 0 20px rgba(30, 111, 255, 0.2);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 0.5rem;
            color: var(--text-main);
        }

        @media (max-width: 1024px) {
            .nav-menu {
                gap: 1.2rem;
            }
            .header-cta {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .nav-menu {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(6, 11, 22, 0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 1.5rem 1.25rem;
                gap: 1rem;
                transform: translateY(-140%);
                transition: transform 0.35s ease;
                border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            }
            .nav-menu.open {
                transform: translateY(0);
            }
            .nav-toggle {
                display: flex;
            }
        }

        .article-hero {
            position: relative;
            padding: 5.5rem 0 4rem;
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(6, 11, 22, 0.95) 30%, rgba(6, 11, 22, 0.7) 65%, rgba(6, 11, 22, 0.45) 100%);
        }

        .article-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(transparent, var(--bg-main));
        }

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

        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-bottom: 1.2rem;
        }

        .breadcrumb a {
            transition: color 0.25s;
        }

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

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

        .breadcrumb-current {
            color: var(--text-main);
            max-width: 55vw;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            font-weight: 500;
        }

        .article-title {
            font-size: clamp(1.9rem, 4vw, 2.8rem);
            font-weight: 800;
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin-bottom: 1rem;
            max-width: 840px;
            word-break: break-word;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1.4rem;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .article-meta-item {
            display: inline-flex;
            align-items: center;
            gap: 0.45rem;
        }

        .article-meta-item svg {
            width: 16px;
            height: 16px;
            opacity: 0.7;
        }

        .article-meta-tag {
            display: inline-block;
            padding: 0.2rem 0.75rem;
            border-radius: 999px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            font-size: 0.8rem;
            color: var(--accent);
        }

        .article-section {
            padding: 3.5rem 0 2rem;
            position: relative;
        }

        .article-body-wrap {
            max-width: 768px;
            margin: 0 auto;
            padding: 0 2rem;
        }

        @media (max-width: 768px) {
            .article-body-wrap {
                padding: 0 1.25rem;
            }
        }

        .article-body {
            font-size: 1.0625rem;
            line-height: 1.85;
            color: rgba(234, 240, 255, 0.88);
        }

        .article-body p {
            margin-bottom: 1.5em;
        }

        .article-body h2 {
            font-size: 1.55rem;
            font-weight: 700;
            margin: 2.2rem 0 1rem;
            color: #fff;
            padding-left: 0.85rem;
            border-left: 3px solid var(--accent);
            border-radius: 2px;
        }

        .article-body h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin: 1.8rem 0 0.9rem;
            color: #fff;
        }

        .article-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin: 1.4rem 0 0.7rem;
            color: var(--primary-light);
        }

        .article-body blockquote {
            border-left: 3px solid var(--primary);
            background: rgba(30, 111, 255, 0.08);
            padding: 1rem 1.4rem;
            border-radius: 0 14px 14px 0;
            margin: 1.6rem 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.5em;
        }

        .article-body ul {
            list-style: none;
        }

        .article-body ul li {
            position: relative;
            padding-left: 0.4rem;
            margin-bottom: 0.4rem;
        }

        .article-body ul li::before {
            content: '';
            position: absolute;
            left: -1.1rem;
            top: 0.72em;
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
        }

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

        .article-body ol li {
            margin-bottom: 0.4rem;
            padding-left: 0.3rem;
        }

        .article-body img {
            border-radius: 16px;
            margin: 2rem 0;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
        }

        .article-body pre {
            background: var(--bg-panel);
            border: 1px solid var(--glass-border);
            border-radius: 14px;
            padding: 1.2rem 1.4rem;
            overflow-x: auto;
            font-size: 0.9rem;
            margin: 1.5rem 0;
        }

        .article-body a {
            color: var(--primary-light);
            border-bottom: 1px solid rgba(30, 111, 255, 0.35);
            transition: all 0.25s;
        }

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

        .not-found {
            text-align: center;
            padding: 5rem 1rem;
            max-width: 640px;
            margin: 0 auto;
        }

        .not-found-icon {
            font-size: 3.5rem;
            margin-bottom: 1.2rem;
            opacity: 0.5;
        }

        .not-found h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
        }

        .not-found p {
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }

        .post-nav-section {
            padding: 2.5rem 0 1rem;
        }

        .post-nav-row {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: space-between;
            align-items: center;
        }

        .post-nav-link {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.65rem 1.4rem;
            border-radius: 999px;
            background: var(--glass-bg);
            border: 1px solid var(--glass-border);
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: all 0.3s;
        }

        .post-nav-link:hover {
            border-color: var(--primary);
            color: var(--text-main);
            box-shadow: 0 0 18px rgba(30, 111, 255, 0.2);
            transform: translateY(-2px);
        }

        .section-head {
            margin-bottom: 2.5rem;
        }

        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.3rem);
            font-weight: 800;
            margin-bottom: 0.6rem;
            letter-spacing: 0.02em;
        }

        .section-title span {
            color: var(--accent);
        }

        .section-sub {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
        }

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

        .section-center .section-sub {
            margin: 0 auto;
        }

        .related-section {
            padding: 3.5rem 0 1rem;
        }

        .post-card {
            display: flex;
            flex-direction: column;
            background: linear-gradient(145deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all 0.35s ease;
            height: 100%;
        }

        .post-card:hover {
            border-color: rgba(30, 111, 255, 0.5);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

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

        .post-card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .post-card:hover .post-card-cover img {
            transform: scale(1.03);
        }

        .post-card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
            background: rgba(6, 11, 22, 0.72);
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--accent);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.22rem 0.75rem;
            border-radius: 999px;
        }

        .post-card-body {
            padding: 1.4rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .post-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 0.6rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 3.2em;
            transition: color 0.3s;
        }

        .post-card:hover .post-card-title {
            color: var(--primary-light);
        }

        .post-card-excerpt {
            font-size: 0.875rem;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 1.2rem;
            flex: 1;
        }

        .post-card-foot {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            padding-top: 0.9rem;
        }

        .post-card-more {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            color: var(--primary-light);
            font-weight: 500;
            transition: all 0.3s;
        }

        .post-card:hover .post-card-more {
            color: var(--accent);
            gap: 0.55rem;
        }

        .faq-section {
            padding: 4rem 0;
            background: linear-gradient(180deg, transparent, rgba(13, 23, 40, 0.5) 20%, rgba(13, 23, 40, 0.5) 80%, transparent);
        }

        .faq-list {
            max-width: 768px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            border-radius: 16px;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            overflow: hidden;
            transition: border-color 0.3s;
        }

        .faq-item.active {
            border-color: rgba(30, 111, 255, 0.5);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 0.9rem;
            width: 100%;
            padding: 1.1rem 1.3rem;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.3s;
        }

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

        .faq-q-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 800;
            color: var(--accent);
        }

        .faq-arrow {
            margin-left: auto;
            width: 18px;
            height: 18px;
            flex-shrink: 0;
            transition: transform 0.35s;
            color: var(--text-secondary);
        }

        .faq-item.active .faq-arrow {
            transform: rotate(180deg);
            color: var(--accent);
        }

        .faq-answer-wrap {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }

        .faq-item.active .faq-answer-wrap {
            max-height: 400px;
        }

        .faq-answer {
            display: flex;
            gap: 0.9rem;
            padding: 0 1.3rem 1.2rem 1.3rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.8;
        }

        .faq-a-icon {
            width: 30px;
            height: 30px;
            flex-shrink: 0;
            border-radius: 50%;
            background: rgba(30, 111, 255, 0.12);
            border: 1px solid rgba(30, 111, 255, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.85rem;
            font-weight: 800;
            color: var(--primary-light);
        }

        .cta-section {
            position: relative;
            padding: 5rem 0;
            background-image: url('/assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(6, 11, 22, 0.92) 10%, rgba(6, 11, 22, 0.8) 50%, rgba(6, 11, 22, 0.6) 90%);
        }

        .cta-inner {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }

        .cta-title {
            font-size: clamp(1.8rem, 3.4vw, 2.5rem);
            font-weight: 800;
            margin-bottom: 1rem;
            line-height: 1.35;
        }

        .cta-title span {
            color: var(--accent);
        }

        .cta-sub {
            color: var(--text-secondary);
            font-size: 1.05rem;
            margin-bottom: 2rem;
        }

        .cta-form {
            display: flex;
            gap: 0.6rem;
            max-width: 460px;
            margin: 0 auto;
            flex-wrap: wrap;
        }

        .cta-input {
            flex: 1;
            min-width: 180px;
            padding: 0.7rem 1.2rem;
            border-radius: var(--radius-input);
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-main);
            font-size: 0.95rem;
            outline: none;
            transition: all 0.3s;
            height: 46px;
        }

        .cta-input::placeholder {
            color: var(--text-muted);
        }

        .cta-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 18px rgba(30, 111, 255, 0.3);
        }

        .site-footer {
            background: var(--bg-deep);
            padding: 4.5rem 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            position: relative;
        }

        .site-footer::before {
            content: '';
            display: block;
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 1px;
            background: linear-gradient(90deg, transparent, rgba(30, 111, 255, 0.4), rgba(0, 229, 160, 0.4), transparent);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            margin-bottom: 3rem;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.8;
            margin-top: 1rem;
            max-width: 320px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1.1rem;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }

        .footer-col ul a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: all 0.25s;
        }

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

        .footer-contact {
            gap: 0.8rem;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: var(--text-secondary);
            font-size: 0.88rem;
        }

        .footer-contact svg {
            color: var(--primary-light);
            flex-shrink: 0;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.8rem;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 1.4rem 0;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        .footer-bottom-right {
            display: flex;
            gap: 1.2rem;
        }

        .footer-bottom-right a {
            color: var(--text-muted);
            transition: color 0.25s;
        }

        .footer-bottom-right a:hover {
            color: var(--accent);
        }

/* roulang page: category1 */
/* ========== 设计变量 ========== */
        :root {
            --bg-deep: #060B16;
            --bg-surface: #0D1728;
            --bg-footer: #04070D;
            --primary: #1E6FFF;
            --primary-light: #3D8BFF;
            --accent: #00E5A0;
            --accent-dim: rgba(0, 229, 160, 0.14);
            --orange: #FF6B35;
            --text-main: #EAF0FF;
            --text-secondary: #8FA3C8;
            --text-muted: #5A6D8E;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-card: 20px;
            --radius-btn: 999px;
            --radius-input: 14px;
            --shadow-btn: 0 0 24px rgba(30, 111, 255, 0.35);
            --shadow-card: 0 8px 30px rgba(10, 15, 30, 0.5);
            --transition: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background: var(--bg-deep);
            color: var(--text-main);
            line-height: 1.7;
            font-size: 16px;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
        }

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        /* ========== 按钮 ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.75rem 1.75rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 0.9375rem;
            line-height: 1.4;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent), #00c98a);
            color: #06101a;
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 32px rgba(0, 229, 160, 0.45);
            filter: brightness(1.08);
        }

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

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-main);
        }

        .btn-outline:hover {
            border-color: var(--primary-light);
            color: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 0 20px rgba(30, 111, 255, 0.18);
        }

        .btn-blue {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: var(--shadow-btn);
        }

        .btn-blue:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 0 30px rgba(30, 111, 255, 0.45);
        }

        /* ========== 标签 / 徽章 ========== */
        .badge-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.375rem;
            padding: 0.25rem 0.85rem;
            font-size: 0.75rem;
            font-weight: 600;
            border-radius: 999px;
            background: var(--accent-dim);
            color: var(--accent);
            border: 1px solid rgba(0, 229, 160, 0.25);
            letter-spacing: 0.02em;
        }

        .badge-tag-orange {
            background: rgba(255, 107, 53, 0.12);
            color: var(--orange);
            border-color: rgba(255, 107, 53, 0.25);
        }

        .badge-tag-blue {
            background: rgba(30, 111, 255, 0.12);
            color: var(--primary-light);
            border-color: rgba(30, 111, 255, 0.25);
        }

        /* ========== 头部导航 ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(6, 11, 22, 0.85);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-header::before {
            content: "";
            display: block;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            opacity: 0.7;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 1rem;
        }

        .site-logo {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.375rem;
            font-weight: 800;
            letter-spacing: 0.01em;
            color: var(--text-main);
            flex-shrink: 0;
        }

        .logo-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 12px rgba(0, 229, 160, 0.7);
            position: relative;
            flex-shrink: 0;
        }

        .logo-dot::after {
            content: "";
            position: absolute;
            inset: -4px;
            border-radius: 50%;
            border: 1px solid rgba(0, 229, 160, 0.4);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0% {
                transform: scale(0.8);
                opacity: 0.8;
            }
            70% {
                transform: scale(1.4);
                opacity: 0;
            }
            100% {
                opacity: 0;
            }
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 0.25rem;
            list-style: none;
        }

        .nav-menu a {
            display: block;
            padding: 0.5rem 1.1rem;
            font-size: 0.9375rem;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 999px;
            position: relative;
            transition: var(--transition);
        }

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

        .nav-menu a.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(30, 111, 255, 0.5);
            background: rgba(30, 111, 255, 0.1);
        }

        .nav-menu a.active::after {
            content: "";
            position: absolute;
            left: 50%;
            bottom: 0;
            transform: translateX(-50%);
            width: 28px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .nav-cta {
            padding: 0.5rem 1.5rem;
            font-size: 0.875rem;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 42px;
            height: 42px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid rgba(255, 255, 255, 0.12);
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: var(--transition);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== Hero ========== */
        .page-hero {
            position: relative;
            padding: 110px 0 100px;
            background: url('/assets/images/backpic/back-1.webp') center 30% / cover no-repeat;
            overflow: hidden;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(6, 11, 22, 0.95) 30%, rgba(6, 11, 22, 0.65) 70%, rgba(6, 11, 22, 0.3));
            z-index: 1;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 75% 40%, rgba(30, 111, 255, 0.18), transparent 60%);
            z-index: 1;
        }

        .page-hero .hero-glow-line {
            position: absolute;
            top: 20%;
            right: -5%;
            width: 45%;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
            transform: rotate(-12deg);
            opacity: 0.5;
            z-index: 2;
            pointer-events: none;
        }

        .page-hero .hero-glow-line2 {
            position: absolute;
            bottom: 18%;
            right: 8%;
            width: 30%;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--accent), transparent);
            transform: rotate(20deg);
            opacity: 0.35;
            z-index: 2;
            pointer-events: none;
        }

        .page-hero-content {
            position: relative;
            z-index: 3;
            max-width: 760px;
        }

        .page-hero .hero-kicker {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--accent-dim);
            border: 1px solid rgba(0, 229, 160, 0.25);
            padding: 0.4rem 1.1rem;
            border-radius: 999px;
            margin-bottom: 1.5rem;
        }

        .page-hero h1 {
            font-size: clamp(2.5rem, 6vw, 4rem);
            font-weight: 800;
            line-height: 1.15;
            letter-spacing: 0.01em;
            margin-bottom: 1.1rem;
            background: linear-gradient(120deg, #fff, #b8ccf0);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero .hero-sub {
            font-size: 1.125rem;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 2rem;
            max-width: 560px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
        }

        .hero-glass-card {
            position: absolute;
            right: 5%;
            bottom: -40px;
            z-index: 4;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: 18px;
            padding: 1.25rem 1.5rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            box-shadow: 0 8px 32px rgba(10, 15, 30, 0.4);
        }

        .hero-glass-card .g-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1;
        }

        .hero-glass-card .g-label {
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        /* ========== Timeline 内容区 ========== */
        .timeline-section {
            position: relative;
            padding: 100px 0 80px;
        }

        .timeline-section::before {
            content: "";
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 1px;
            height: 100%;
            background: linear-gradient(180deg, transparent, rgba(30, 111, 255, 0.4), rgba(0, 229, 160, 0.4), transparent);
            opacity: 0.45;
        }

        .section-head {
            text-align: center;
            margin-bottom: 4rem;
        }

        .section-head .section-kicker {
            display: inline-block;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 0.75rem;
            background: var(--accent-dim);
            border: 1px solid rgba(0, 229, 160, 0.2);
            padding: 0.3rem 1.1rem;
            border-radius: 999px;
        }

        .section-head h2 {
            font-size: clamp(1.9rem, 3.5vw, 2.6rem);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-main);
        }

        .section-head p {
            color: var(--text-secondary);
            max-width: 540px;
            margin: 0.75rem auto 0;
            font-size: 1rem;
        }

        .timeline-item {
            position: relative;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3.5rem;
            align-items: center;
            margin-bottom: 5rem;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-item .tl-num {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 56px;
            height: 56px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.0625rem;
            font-weight: 800;
            color: var(--accent);
            background: var(--bg-deep);
            border: 2px solid rgba(0, 229, 160, 0.6);
            box-shadow: 0 0 24px rgba(0, 229, 160, 0.25);
            z-index: 3;
        }

        .timeline-media {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            aspect-ratio: 4/3;
            box-shadow: var(--shadow-card);
        }

        .timeline-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .timeline-media:hover img {
            transform: scale(1.04);
        }

        .timeline-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(6, 11, 22, 0.45));
            pointer-events: none;
        }

        .timeline-info {
            padding: 1.5rem 0;
        }

        .timeline-info .tl-header {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 1rem;
        }

        .timeline-info h3 {
            font-size: 1.5rem;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 0.75rem;
            color: var(--text-main);
        }

        .timeline-info p {
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.8;
            margin-bottom: 1.25rem;
        }

        .timeline-info .tl-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin-bottom: 1.25rem;
        }

        .timeline-info .tl-meta span {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .tl-link {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--primary-light);
            transition: var(--transition);
        }

        .tl-link:hover {
            color: var(--accent);
            gap: 0.6rem;
        }

        .timeline-item.reversed .timeline-media {
            order: 2;
        }

        .timeline-item.reversed .timeline-info {
            order: 1;
        }

        /* ========== 热门专题横向滚动 ========== */
        .topic-section {
            padding: 80px 0;
            background: var(--bg-surface);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            position: relative;
        }

        .topic-scroll {
            display: flex;
            gap: 1.25rem;
            overflow-x: auto;
            padding-bottom: 1rem;
            scrollbar-width: none;
        }

        .topic-scroll::-webkit-scrollbar {
            display: none;
        }

        .topic-card {
            flex: 0 0 280px;
            border-radius: var(--radius-card);
            overflow: hidden;
            background: var(--bg-deep);
            border: 1px solid var(--glass-border);
            transition: var(--transition);
            position: relative;
        }

        .topic-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 8px 30px rgba(10, 15, 30, 0.5);
            border-color: rgba(30, 111, 255, 0.4);
        }

        .topic-card .topic-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }

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

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

        .topic-card .topic-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 40%, rgba(6, 11, 22, 0.7));
        }

        .topic-card .topic-badge {
            position: absolute;
            top: 0.9rem;
            left: 0.9rem;
            z-index: 2;
        }

        .topic-card .topic-body {
            padding: 1.25rem;
        }

        .topic-card .topic-body h4 {
            font-size: 1.0625rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .topic-card .topic-body p {
            font-size: 0.8125rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0.9rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .topic-card .topic-more {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.8125rem;
            color: var(--accent);
            font-weight: 600;
        }

        .topic-card .topic-more:hover {
            gap: 0.5rem;
        }

        /* ========== 数据指标 ========== */
        .stats-section {
            padding: 90px 0;
            background: url('/assets/images/backpic/back-3.webp') center / cover no-repeat;
            position: relative;
        }

        .stats-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(6, 11, 22, 0.94), rgba(13, 23, 40, 0.86));
        }

        .stats-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }

        .stat-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            border-radius: 18px;
            padding: 1.75rem 1.5rem;
            text-align: center;
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            transition: var(--transition);
        }

        .stat-card:hover {
            border-color: rgba(0, 229, 160, 0.35);
            box-shadow: 0 0 32px rgba(0, 229, 160, 0.12);
            transform: translateY(-4px);
        }

        .stat-card .stat-num {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent);
            line-height: 1.2;
        }

        .stat-card .stat-label {
            font-size: 0.875rem;
            color: var(--text-secondary);
            margin-top: 0.5rem;
        }

        /* ========== FAQ ========== */
        .faq-section {
            padding: 90px 0 70px;
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .faq-item {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item.open {
            border-color: rgba(30, 111, 255, 0.4);
            box-shadow: 0 4px 20px rgba(30, 111, 255, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 1.25rem 1.5rem;
            width: 100%;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-main);
        }

        .faq-question .q-icon {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: rgba(30, 111, 255, 0.15);
            color: var(--primary-light);
            font-weight: 800;
            font-size: 0.8125rem;
            flex-shrink: 0;
        }

        .faq-question .faq-arrow {
            margin-left: auto;
            width: 18px;
            height: 18px;
            border-right: 2px solid var(--text-muted);
            border-bottom: 2px solid var(--text-muted);
            transform: rotate(45deg);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-arrow {
            transform: rotate(-135deg);
            border-color: var(--accent);
        }

        .faq-answer {
            max-height: 0;
            padding: 0 1.5rem;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            color: var(--text-secondary);
            font-size: 0.9375rem;
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 1.5rem 1.25rem;
        }

        .faq-answer .a-icon {
            display: inline-block;
            font-weight: 800;
            color: var(--accent);
            margin-right: 0.5rem;
        }

        /* ========== CTA ========== */
        .cta-section {
            padding: 90px 0 100px;
        }

        .cta-box {
            position: relative;
            border-radius: 28px;
            overflow: hidden;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            padding: 4rem 2.5rem;
            text-align: center;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .cta-box::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(6, 11, 22, 0.92), rgba(13, 23, 40, 0.75), rgba(30, 111, 255, 0.35));
        }

        .cta-box > * {
            position: relative;
            z-index: 2;
        }

        .cta-box h2 {
            font-size: clamp(1.8rem, 3vw, 2.4rem);
            font-weight: 800;
            margin-bottom: 0.75rem;
        }

        .cta-box p {
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 2rem;
            font-size: 1rem;
            line-height: 1.8;
        }

        .cta-form {
            display: flex;
            max-width: 480px;
            margin: 0 auto;
            gap: 0.75rem;
            flex-wrap: wrap;
            justify-content: center;
        }

        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 0.85rem 1.25rem;
            border-radius: var(--radius-input);
            border: 1px solid rgba(255, 255, 255, 0.18);
            background: rgba(6, 11, 22, 0.6);
            color: var(--text-main);
            font-size: 0.9375rem;
            transition: var(--transition);
        }

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

        .cta-form input:focus {
            border-color: var(--primary-light);
            box-shadow: 0 0 0 3px rgba(30, 111, 255, 0.2);
        }

        /* ========== 页脚 ========== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.04);
            padding: 4rem 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 2.5rem;
            padding-bottom: 3rem;
        }

        .footer-brand .site-logo {
            margin-bottom: 1rem;
        }

        .footer-brand p {
            color: var(--text-secondary);
            font-size: 0.875rem;
            line-height: 1.8;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 0.9375rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 1.1rem;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
        }

        .footer-col a {
            font-size: 0.875rem;
            color: var(--text-secondary);
            transition: var(--transition);
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 0.875rem;
            color: var(--text-secondary);
        }

        .footer-contact svg {
            flex-shrink: 0;
            color: var(--primary-light);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 1.5rem 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.75rem;
            font-size: 0.8125rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-muted);
        }

        .footer-bottom a:hover {
            color: var(--text-secondary);
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .nav-menu {
                display: none;
            }

            .nav-menu.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 72px;
                left: 1rem;
                right: 1rem;
                background: rgba(6, 11, 22, 0.97);
                border: 1px solid var(--glass-border);
                border-radius: 16px;
                padding: 1rem;
                gap: 0.5rem;
                box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
                z-index: 100;
            }

            .nav-menu.open a {
                padding: 0.75rem 1rem;
            }

            .nav-toggle {
                display: flex;
            }

            .nav-cta {
                display: none;
            }

            .hero-glass-card {
                display: none;
            }

            .timeline-section::before {
                left: 28px;
            }

            .timeline-item {
                grid-template-columns: 1fr;
                gap: 1.5rem;
                margin-left: 60px;
            }

            .timeline-item .tl-num {
                left: 28px;
                transform: translate(-50%, -50%);
                width: 44px;
                height: 44px;
                font-size: 0.9375rem;
            }

            .timeline-item.reversed .timeline-media,
            .timeline-item.reversed .timeline-info {
                order: initial;
            }

            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

        @media (max-width: 640px) {
            .page-hero {
                padding: 70px 0 64px;
            }

            .page-hero h1 {
                font-size: 2.2rem;
            }

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

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

            .timeline-section {
                padding: 70px 0 48px;
            }

            .timeline-item {
                margin-left: 36px;
                gap: 1rem;
            }

            .timeline-section::before {
                left: 16px;
            }

            .timeline-item .tl-num {
                left: 16px;
                width: 38px;
                height: 38px;
                font-size: 0.8125rem;
                transform: translate(-50%, -50%);
            }

            .section-head {
                margin-bottom: 2.5rem;
            }

            .topic-scroll {
                gap: 0.875rem;
            }

            .topic-card {
                flex-basis: 240px;
            }

            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 0.875rem;
            }

            .stat-card {
                padding: 1.25rem 1rem;
            }

            .stat-card .stat-num {
                font-size: 1.75rem;
            }

            .cta-box {
                padding: 2.5rem 1.25rem;
            }

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

            .cta-form input,
            .cta-form .btn {
                width: 100%;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ========== 通用滚动条 ========== */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }

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

        ::-webkit-scrollbar-thumb {
            background: #1e2c44;
            border-radius: 4px;
        }

        ::-webkit-scrollbar-thumb:hover {
            background: #2c3f5e;
        }

        /* ========== 图片装饰线 ========== */
        .img-deco-line {
            position: absolute;
            top: -12px;
            left: -12px;
            width: 60px;
            height: 60px;
            border-left: 2px solid var(--accent);
            border-top: 2px solid var(--accent);
            border-radius: 12px 0 0 0;
            opacity: 0.5;
            z-index: 2;
            pointer-events: none;
        }

/* roulang page: category2 */
:root {
    --bg-primary: #060B16;
    --bg-raised: #0D1728;
    --bg-deep: #04070D;
    --brand: #1E6FFF;
    --brand-light: #3D8BFF;
    --accent: #00E5A0;
    --accent-dark: #00B57F;
    --orange: #FF6B35;
    --text-main: #EAF0FF;
    --text-secondary: #8FA3C8;
    --text-muted: #5A6D8E;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.12);
    --radius-card: 20px;
    --radius-btn: 999px;
    --radius-input: 14px;
    --shadow-glow: 0 0 24px rgba(30, 111, 255, 0.35);
    --shadow-card: 0 8px 30px rgba(10, 15, 30, 0.5);
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}
a {
    color: inherit;
    text-decoration: none;
}
img {
    max-width: 100%;
    display: block;
}
button,
input {
    font-family: inherit;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 2rem;
}
@media (max-width: 768px) {
    .container {
        padding: 0 1.25rem;
    }
}

/* ============ 导航 ============ */
.site-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(6, 11, 22, 0.85);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.site-nav::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--brand), var(--accent), transparent);
}
.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}
.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 0.02em;
    color: #fff;
    white-space: nowrap;
}
.logo-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px rgba(0, 229, 160, 0.8);
    flex-shrink: 0;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 2.25rem;
    list-style: none;
}
.nav-menu a {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.2s, text-shadow 0.2s;
    position: relative;
    padding: 0.25rem 0;
}
.nav-menu a:hover {
    color: #fff;
}
.nav-menu a.active {
    color: #fff;
    text-shadow: 0 0 12px rgba(30, 111, 255, 0.5);
}
.nav-menu a.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 2px;
    border-radius: 2px;
    background: linear-gradient(90deg, var(--brand), var(--accent));
    box-shadow: 0 0 8px rgba(0, 229, 160, 0.5);
}
.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #04070D;
    font-weight: 700;
    font-size: 0.875rem;
    padding: 0.625rem 1.5rem;
    border-radius: var(--radius-btn);
    box-shadow: 0 0 20px rgba(0, 229, 160, 0.35);
    transition: all 0.2s;
    border: none;
    cursor: pointer;
}
.nav-cta:hover {
    box-shadow: 0 0 28px rgba(0, 229, 160, 0.55);
    transform: translateY(-1px);
}
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: #fff;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 8px;
}
.nav-toggle:focus {
    outline: 2px solid rgba(0, 229, 160, 0.4);
    outline-offset: 2px;
}
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }
    .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(6, 11, 22, 0.97);
        flex-direction: column;
        gap: 0;
        padding: 0.5rem 1.25rem 1.25rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        backdrop-filter: blur(16px);
    }
    .nav-menu.open {
        display: flex;
    }
    .nav-menu li {
        width: 100%;
    }
    .nav-menu a {
        display: block;
        padding: 0.875rem 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    }
    .nav-menu a.active::after {
        display: none;
    }
    .nav-cta {
        display: none;
    }
}

/* ============ 按钮 ============ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border-radius: var(--radius-btn);
    font-weight: 700;
    font-size: 0.9375rem;
    transition: all 0.2s;
    cursor: pointer;
    border: none;
    line-height: 1.4;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #04070D;
    box-shadow: 0 0 24px rgba(0, 229, 160, 0.35);
}
.btn-primary:hover {
    box-shadow: 0 0 32px rgba(0, 229, 160, 0.55);
    transform: translateY(-2px);
}
.btn-primary:active {
    transform: translateY(0);
}
.btn-ghost {
    background: transparent;
    color: var(--text-main);
    border: 1px solid rgba(255, 255, 255, 0.35);
}
.btn-ghost:hover {
    border-color: var(--brand-light);
    color: var(--brand-light);
    transform: translateY(-2px);
}
.btn-brand {
    background: linear-gradient(135deg, var(--brand), var(--brand-light));
    color: #fff;
    box-shadow: var(--shadow-glow);
}
.btn-brand:hover {
    box-shadow: 0 0 32px rgba(30, 111, 255, 0.55);
    transform: translateY(-2px);
}

/* ============ 标签 / 徽章 ============ */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: 0.375rem 1.125rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.06em;
}
.tag-accent {
    color: var(--accent);
    border-color: rgba(0, 229, 160, 0.3);
    background: rgba(0, 229, 160, 0.08);
}
.tag-brand {
    color: var(--brand-light);
    border-color: rgba(30, 111, 255, 0.3);
    background: rgba(30, 111, 255, 0.08);
}
.tag-orange {
    color: var(--orange);
    border-color: rgba(255, 107, 53, 0.3);
    background: rgba(255, 107, 53, 0.08);
}

/* ============ 通用卡片 ============ */
.card {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--radius-card);
    padding: 2rem;
    transition: all 0.3s;
}
.card:hover {
    box-shadow: var(--shadow-card);
    border-color: rgba(30, 111, 255, 0.25);
    transform: translateY(-4px);
}

/* ============ 板块标题 ============ */
.sec-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 0.75rem;
}
.sec-title {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}
.sec-desc {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    max-width: 42rem;
    line-height: 1.7;
}
.section {
    padding: 5.5rem 0;
}
@media (max-width: 768px) {
    .section {
        padding: 3.5rem 0;
    }
}

/* ============ Hero ============ */
.data-hero {
    position: relative;
    min-height: 88vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}
.data-hero-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 0;
}
.data-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(6, 11, 22, 0.92) 0%, rgba(6, 11, 22, 0.55) 55%, rgba(6, 11, 22, 0.1) 100%);
    z-index: 1;
}
.data-hero-overlay::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 160px;
    background: linear-gradient(180deg, transparent, var(--bg-primary));
}
.data-hero-inner {
    position: relative;
    z-index: 2;
    padding-top: 3rem;
    padding-bottom: 5rem;
    max-width: 640px;
    margin-left: 0;
}
.data-hero-inner h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.08;
    letter-spacing: -0.02em;
    margin: 1.25rem 0 1.5rem;
}
.data-hero-inner .hero-sub {
    font-size: clamp(1.0625rem, 2vw, 1.375rem);
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}
.data-hero-inner .hero-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 2rem;
    max-width: 34rem;
}
.data-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}
.data-hero-metrics {
    display: flex;
    gap: 2.5rem;
    flex-wrap: wrap;
}
.metric-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}
.metric-num {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.1;
    font-variant-numeric: tabular-nums;
}
.metric-label {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}
.data-hero-card {
    position: absolute;
    right: 3rem;
    bottom: 6rem;
    z-index: 2;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.03));
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 18px;
    padding: 1.5rem 1.75rem;
    max-width: 280px;
}
.data-hero-card .card-title {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--accent);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}
.data-hero-card .card-text {
    font-size: 0.9375rem;
    color: var(--text-main);
    line-height: 1.6;
}
@media (max-width: 768px) {
    .data-hero {
        min-height: auto;
        padding: 6rem 0 4rem;
    }
    .data-hero-overlay {
        background: linear-gradient(180deg, rgba(6, 11, 22, 0.8), rgba(6, 11, 22, 0.35));
    }
    .data-hero-inner {
        padding: 1rem 0 2rem;
    }
    .data-hero-card {
        display: none;
    }
    .data-hero-metrics {
        gap: 1.75rem;
    }
}

/* ============ 能力卡片 ============ */
.ability-card {
    padding: 2.25rem 2rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.ability-icon {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    background: rgba(30, 111, 255, 0.12);
    border: 1px solid rgba(30, 111, 255, 0.3);
    color: var(--brand-light);
}
.ability-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}
.ability-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    flex-grow: 1;
}

/* ============ 数据亮点 ============ */
.metrics-band {
    background: linear-gradient(135deg, rgba(13, 23, 40, 0.8), rgba(6, 11, 22, 0.6));
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: 24px;
    padding: 3rem 2.5rem;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}
.metrics-band-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.5rem;
}
.metrics-band-num {
    font-size: clamp(2.25rem, 4vw, 3rem);
    font-weight: 900;
    background: linear-gradient(135deg, var(--accent), var(--brand-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    line-height: 1.1;
}
.metrics-band-label {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    font-weight: 500;
}
@media (max-width: 768px) {
    .metrics-band {
        grid-template-columns: 1fr 1fr;
        padding: 2rem 1.5rem;
        gap: 1.5rem;
    }
}

/* ============ 应用场景 ============ */
.scene-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
}
.scene-row:last-child {
    margin-bottom: 0;
}
.scene-img {
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
}
.scene-img img {
    width: 100%;
    height: 320px;
    object-fit: cover;
    transition: transform 0.5s;
}
.scene-img:hover img {
    transform: scale(1.03);
}
.scene-img::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(6, 11, 22, 0.4));
    border-radius: 20px;
    pointer-events: none;
}
.scene-content .scene-tag {
    margin-bottom: 1rem;
}
.scene-content h3 {
    font-size: 1.625rem;
    font-weight: 800;
    margin-bottom: 0.875rem;
    line-height: 1.3;
}
.scene-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.75;
    margin-bottom: 1.25rem;
}
.scene-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: gap 0.2s;
}
.scene-link:hover {
    gap: 0.625rem;
}
@media (max-width: 1024px) {
    .scene-row {
        gap: 2.5rem;
        margin-bottom: 3.5rem;
    }
}
@media (max-width: 768px) {
    .scene-row {
        grid-template-columns: 1fr;
        gap: 1.75rem;
        margin-bottom: 3rem;
    }
    .scene-img img {
        height: 220px;
    }
}

/* ============ 流程 ============ */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    position: relative;
}
.process-item {
    position: relative;
    padding: 2rem 1.5rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    transition: all 0.3s;
}
.process-item:hover {
    border-color: rgba(30, 111, 255, 0.35);
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-4px);
}
.process-num {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}
.process-item h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.process-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
}
@media (max-width: 1024px) {
    .process-grid {
        grid-template-columns: 1fr 1fr;
    }
}
@media (max-width: 520px) {
    .process-grid {
        grid-template-columns: 1fr;
    }
}

/* ============ 专题卡片 ============ */
.feature-card {
    border-radius: 20px;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    transition: all 0.3s;
}
.feature-card:hover {
    border-color: rgba(30, 111, 255, 0.35);
    box-shadow: var(--shadow-card);
    transform: translateY(-4px);
}
.feature-card-img {
    position: relative;
    overflow: hidden;
}
.feature-card-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.5s;
}
.feature-card:hover .feature-card-img img {
    transform: scale(1.03);
}
.feature-card-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
}
.feature-card-body {
    padding: 1.5rem;
}
.feature-card-body h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.625rem;
    line-height: 1.4;
}
.feature-card-body p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.65;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.feature-card-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8125rem;
    color: var(--text-muted);
}
.feature-card-meta a {
    color: var(--accent);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    transition: gap 0.2s;
}
.feature-card-meta a:hover {
    gap: 0.5rem;
}

/* ============ FAQ ============ */
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.faq-item {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: border-color 0.3s;
}
.faq-item.active {
    border-color: rgba(30, 111, 255, 0.35);
}
.faq-q {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    border: none;
    background: none;
    color: var(--text-main);
    width: 100%;
    text-align: left;
}
.faq-q:focus-visible {
    outline: 2px solid rgba(30, 111, 255, 0.5);
    outline-offset: -2px;
}
.faq-q-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    border-radius: 50%;
    background: rgba(0, 229, 160, 0.12);
    border: 1px solid rgba(0, 229, 160, 0.3);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8125rem;
    font-weight: 700;
}
.faq-a {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows 0.35s ease;
}
.faq-item.active .faq-a {
    grid-template-rows: 1fr;
}
.faq-a-inner {
    overflow: hidden;
}
.faq-a-inner p {
    padding: 0 1.5rem 1.25rem 3.5rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.75;
}
.faq-arrow {
    margin-left: auto;
    transition: transform 0.3s;
    color: var(--text-secondary);
    flex-shrink: 0;
}
.faq-item.active .faq-arrow {
    transform: rotate(180deg);
}

/* ============ CTA ============ */
.cta-section {
    position: relative;
    overflow: hidden;
}
.cta-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center 70%;
    z-index: 0;
}
.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6, 11, 22, 0.95), rgba(13, 23, 40, 0.8));
    z-index: 1;
}
.cta-inner {
    position: relative;
    z-index: 2;
    max-width: 640px;
    margin: 0 auto;
    text-align: center;
    padding: 5rem 0;
}
.cta-inner h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1rem;
}
.cta-inner p {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}
.cta-form {
    display: flex;
    gap: 0.75rem;
    max-width: 460px;
    margin: 0 auto;
}
.cta-form input {
    flex: 1;
    height: 50px;
    padding: 0 1.25rem;
    border-radius: var(--radius-input);
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-main);
    font-size: 0.9375rem;
    outline: none;
    transition: all 0.25s;
    min-width: 0;
}
.cta-form input::placeholder {
    color: var(--text-muted);
}
.cta-form input:focus {
    border-color: var(--brand-light);
    box-shadow: 0 0 0 3px rgba(30, 111, 255, 0.25);
}
.cta-form .btn {
    height: 50px;
    white-space: nowrap;
}
@media (max-width: 520px) {
    .cta-form {
        flex-direction: column;
    }
    .cta-form .btn {
        width: 100%;
    }
}

/* ============ 页脚 ============ */
.site-footer {
    background: var(--bg-deep);
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding: 4rem 0 2rem;
    margin-top: auto;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 3rem;
    margin-bottom: 3rem;
}
.footer-brand .site-logo {
    font-size: 1.25rem;
}
.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-top: 1rem;
}
.footer-col h5 {
    font-size: 0.9375rem;
    font-weight: 700;
    margin-bottom: 1.125rem;
    color: #fff;
}
.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}
.footer-col a {
    color: var(--text-secondary);
    font-size: 0.875rem;
    transition: color 0.2s;
}
.footer-col a:hover {
    color: var(--accent);
}
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}
.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    font-size: 0.8125rem;
}
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}
@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 1.75rem;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
    }
}

/* ============ 杂项 ============ */
.text-gradient {
    background: linear-gradient(120deg, var(--accent), var(--brand-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
::selection {
    background: rgba(30, 111, 255, 0.35);
    color: #fff;
}

/* roulang page: category3 */
:root {
            --bg-primary: #060B16;
            --bg-float: #0D1728;
            --bg-footer: #04070D;
            --brand-primary: #1E6FFF;
            --brand-light: #3D8BFF;
            --accent-green: #00E5A0;
            --accent-orange: #FF6B35;
            --text-main: #EAF0FF;
            --text-secondary: #8FA3C8;
            --text-muted: #5A6D8E;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glass-bg-strong: rgba(255, 255, 255, 0.08);
            --glass-border: rgba(255, 255, 255, 0.12);
            --radius-card: 20px;
            --radius-btn: 999px;
            --radius-input: 14px;
            --shadow-glow-blue: 0 0 24px rgba(30, 111, 255, 0.35);
            --shadow-glow-green: 0 0 24px rgba(0, 229, 160, 0.35);
            --shadow-card: 0 8px 30px rgba(10, 15, 30, 0.5);
            --transition-base: all 0.3s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-main);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

        input {
            font-family: inherit;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }

        /* ====== Header / Nav ====== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(6, 11, 22, 0.88);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }

        .site-header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--brand-primary), var(--accent-green), transparent);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.4rem;
            font-weight: 900;
            letter-spacing: 0.02em;
            color: var(--text-main);
            white-space: nowrap;
        }

        .site-logo .logo-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-green);
            box-shadow: var(--shadow-glow-green);
            flex-shrink: 0;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
        }

        .nav-menu a {
            display: block;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: transparent;
            position: relative;
        }

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

        .nav-menu a.active {
            color: #fff;
            text-shadow: 0 0 12px rgba(61, 139, 255, 0.6);
        }

        .nav-menu a.active::after {
            content: "";
            position: absolute;
            left: 18px;
            right: 18px;
            bottom: 4px;
            height: 2px;
            border-radius: 2px;
            background: linear-gradient(90deg, var(--brand-primary), var(--accent-green));
            box-shadow: 0 0 8px rgba(61, 139, 255, 0.5);
        }

        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--accent-green), #00C488);
            color: #04120B;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: var(--shadow-glow-green);
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .header-cta:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 6px 28px rgba(0, 229, 160, 0.45);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: 10px;
            border: 1px solid var(--glass-border);
            background: rgba(255, 255, 255, 0.04);
            z-index: 1002;
        }

        .nav-toggle span {
            position: relative;
            display: block;
            width: 18px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .nav-toggle span::before,
        .nav-toggle span::after {
            content: "";
            position: absolute;
            left: 0;
            width: 18px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .nav-toggle span::before {
            top: -6px;
        }

        .nav-toggle span::after {
            top: 6px;
        }

        .nav-toggle.open span {
            background: transparent;
        }

        .nav-toggle.open span::before {
            top: 0;
            transform: rotate(45deg);
        }

        .nav-toggle.open span::after {
            top: 0;
            transform: rotate(-45deg);
        }

        @media (max-width: 940px) {
            .nav-toggle {
                display: flex;
            }

            .nav-menu {
                position: fixed;
                top: 0;
                right: -320px;
                width: 280px;
                height: 100vh;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                padding: 90px 24px 30px;
                background: rgba(6, 11, 22, 0.97);
                backdrop-filter: blur(20px);
                border-left: 1px solid var(--glass-border);
                transition: right 0.35s ease;
                z-index: 1001;
            }

            .nav-menu.open {
                right: 0;
            }

            .nav-menu a {
                font-size: 1.05rem;
                padding: 14px 18px;
                border-radius: 14px;
            }

            .nav-menu a.active::after {
                left: 18px;
                right: auto;
                width: 30px;
                bottom: 8px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 64px;
            }

            .site-logo {
                font-size: 1.15rem;
            }

            .header-cta {
                display: none;
            }

            .nav-menu {
                width: 100%;
                right: -100%;
                border-left: none;
                border-bottom: 1px solid var(--glass-border);
            }
        }

        /* ====== Hero ====== */
        .page-hero {
            position: relative;
            padding: 160px 0 90px;
            background: linear-gradient(135deg, rgba(6, 11, 22, 0.92), rgba(30, 111, 255, 0.25)), url('/assets/images/backpic/back-2.png') no-repeat center center / cover;
            overflow: hidden;
        }

        .page-hero::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: 0;
            height: 120px;
            background: linear-gradient(to bottom, transparent, var(--bg-primary));
            pointer-events: none;
        }

        .page-hero::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 160px;
            background: linear-gradient(to bottom, rgba(6, 11, 22, 0.9), transparent);
            pointer-events: none;
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 760px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            border-radius: var(--radius-btn);
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(8px);
            font-size: 0.85rem;
            color: var(--accent-green);
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 22px;
        }

        .hero-badge .pulse-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--accent-green);
            box-shadow: 0 0 10px var(--accent-green);
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.5;
                transform: scale(1.4);
            }
        }

        .page-hero h1 {
            font-size: clamp(2rem, 5vw, 3.6rem);
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: 0.01em;
            margin-bottom: 20px;
            color: #fff;
        }

        .page-hero h1 .gradient-text {
            background: linear-gradient(90deg, var(--accent-green), #7AFFD4);
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .hero-sub {
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-secondary);
            max-width: 620px;
            margin-bottom: 34px;
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--accent-green), #00C488);
            color: #04120B;
            font-weight: 800;
            font-size: 1rem;
            box-shadow: var(--shadow-glow-green);
            transition: var(--transition-base);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
            box-shadow: 0 8px 32px rgba(0, 229, 160, 0.5);
        }

        .btn-ghost {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.35);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            backdrop-filter: blur(6px);
            transition: var(--transition-base);
        }

        .btn-ghost:hover {
            border-color: var(--brand-light);
            color: var(--brand-light);
            box-shadow: 0 0 20px rgba(61, 139, 255, 0.2);
            transform: translateY(-2px);
        }

        .hero-glass-card {
            position: absolute;
            right: 40px;
            bottom: 80px;
            padding: 26px 30px;
            border-radius: var(--radius-card);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(14px);
            z-index: 2;
            max-width: 240px;
        }

        .hero-glass-card .stat {
            display: flex;
            align-items: baseline;
            gap: 6px;
            margin-bottom: 10px;
        }

        .hero-glass-card .stat:last-child {
            margin-bottom: 0;
        }

        .hero-glass-card .stat strong {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-green);
            line-height: 1;
        }

        .hero-glass-card .stat span {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        @media (max-width: 820px) {
            .page-hero {
                padding: 130px 0 70px;
            }

            .hero-glass-card {
                position: static;
                margin-top: 30px;
                max-width: 260px;
            }
        }

        /* ====== Feature article grid ====== */
        .section-block {
            padding: 80px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.08em;
            text-transform: uppercase;
            color: var(--accent-green);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.6rem);
            font-weight: 900;
            color: #fff;
            line-height: 1.25;
            letter-spacing: 0.01em;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.7;
        }

        .tech-feature-card {
            display: flex;
            gap: 0;
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .tech-feature-card:hover {
            border-color: rgba(30, 111, 255, 0.5);
            box-shadow: var(--shadow-card);
            transform: translateY(-3px);
        }

        .tech-feature-card .card-media {
            width: 40%;
            min-height: 200px;
            overflow: hidden;
            position: relative;
        }

        .tech-feature-card .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform 0.45s ease;
        }

        .tech-feature-card:hover .card-media img {
            transform: scale(1.04);
        }

        .tech-feature-card .card-body {
            flex: 1;
            padding: 28px 30px;
        }

        .tech-card-tag {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 999px;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.3);
            color: var(--accent-green);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
        }

        .tech-card-tag.orange {
            background: rgba(255, 107, 53, 0.12);
            border-color: rgba(255, 107, 53, 0.3);
            color: var(--accent-orange);
        }

        .tech-card-tag.blue {
            background: rgba(30, 111, 255, 0.14);
            border-color: rgba(30, 111, 255, 0.4);
            color: var(--brand-light);
        }

        .tech-feature-card h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .tech-feature-card p {
            font-size: 0.93rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .tech-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--brand-light);
            transition: var(--transition-base);
        }

        .tech-card-link:hover {
            color: var(--accent-green);
            gap: 10px;
        }

        @media (max-width: 768px) {
            .tech-feature-card {
                flex-direction: column;
            }

            .tech-feature-card .card-media {
                width: 100%;
                height: 180px;
                position: relative;
            }
        }

        /* ====== Article list row (单栏) ====== */
        .article-list-item {
            display: flex;
            align-items: flex-start;
            gap: 22px;
            padding: 24px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition-base);
        }

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

        .article-list-item .index-num {
            font-size: 2rem;
            font-weight: 900;
            line-height: 1;
            color: rgba(255, 255, 255, 0.15);
            font-family: "SF Mono", "Consolas", monospace;
            min-width: 48px;
        }

        .article-list-item:hover .index-num {
            color: var(--accent-green);
        }

        .article-list-item .item-content h4 {
            font-size: 1.1rem;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 6px;
            transition: var(--transition-base);
        }

        .article-list-item:hover .item-content h4 {
            color: var(--brand-light);
        }

        .article-list-item .item-content p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 10px;
        }

        .article-list-item .item-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .article-list-item .item-meta .separator {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--text-muted);
        }

        /* ====== Sidebar ====== */
        .sidebar-card {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.01));
            border: 1px solid var(--glass-border);
            border-radius: 18px;
            padding: 26px;
            margin-bottom: 24px;
        }

        .sidebar-card h5 {
            font-size: 1rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-card h5::before {
            content: "";
            width: 4px;
            height: 18px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--brand-primary), var(--accent-green));
        }

        .hot-tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .hot-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 7px 16px;
            border-radius: 999px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition-base);
        }

        .hot-tag:hover {
            color: var(--accent-orange);
            border-color: rgba(255, 107, 53, 0.4);
            background: rgba(255, 107, 53, 0.08);
            transform: translateY(-2px);
        }

        .hot-tag .tag-icon {
            font-size: 0.7rem;
        }

        .sidebar-guide-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

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

        .sidebar-guide-item .guide-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(30, 111, 255, 0.12);
            border: 1px solid rgba(30, 111, 255, 0.2);
            flex-shrink: 0;
        }

        .sidebar-guide-item .guide-text {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
        }

        .sidebar-guide-item .guide-text small {
            display: block;
            font-size: 0.75rem;
            font-weight: 400;
            color: var(--text-muted);
            margin-top: 2px;
        }

        .sidebar-subscribe {
            background: linear-gradient(135deg, rgba(30, 111, 255, 0.18), rgba(0, 229, 160, 0.08));
            border: 1px solid rgba(30, 111, 255, 0.25);
        }

        .sidebar-subscribe p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .sidebar-subscribe input {
            width: 100%;
            padding: 12px 16px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--glass-border);
            color: #fff;
            font-size: 0.88rem;
            outline: none;
            transition: var(--transition-base);
            margin-bottom: 12px;
        }

        .sidebar-subscribe input::placeholder {
            color: var(--text-muted);
        }

        .sidebar-subscribe input:focus {
            border-color: var(--brand-primary);
            box-shadow: 0 0 0 3px rgba(30, 111, 255, 0.25);
        }

        .sidebar-subscribe .btn-submit {
            width: 100%;
            padding: 12px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--brand-primary), var(--brand-light));
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition-base);
        }

        .sidebar-subscribe .btn-submit:hover {
            filter: brightness(1.1);
            box-shadow: var(--shadow-glow-blue);
        }

        @media (max-width: 1024px) {
            .article-sidebar {
                margin-top: 50px;
            }
        }

        /* ====== Capability cards ====== */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .capability-card {
            padding: 30px;
            border-radius: var(--radius-card);
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .capability-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--brand-primary), transparent);
            opacity: 0.4;
            transition: var(--transition-base);
        }

        .capability-card:hover {
            transform: translateY(-5px);
            border-color: rgba(30, 111, 255, 0.4);
            box-shadow: var(--shadow-card);
        }

        .capability-card:hover::before {
            opacity: 1;
            background: linear-gradient(90deg, transparent, var(--accent-green), transparent);
        }

        .capability-icon {
            width: 50px;
            height: 50px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(30, 111, 255, 0.14);
            border: 1px solid rgba(30, 111, 255, 0.3);
            margin-bottom: 18px;
        }

        .capability-card h3 {
            font-size: 1.15rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

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

        @media (max-width: 768px) {
            .capability-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (min-width: 769px) and (max-width: 1100px) {
            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        /* ====== Stats ====== */
        .stats-section {
            background: linear-gradient(135deg, rgba(13, 23, 40, 0.9), rgba(6, 11, 22, 0.95)), url('/assets/images/backpic/back-1.webp') no-repeat center / cover;
            padding: 80px 0;
            border-top: 1px solid var(--glass-border);
            border-bottom: 1px solid var(--glass-border);
        }

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

        .stats-item {
            text-align: center;
            padding: 30px 20px;
            border-radius: var(--radius-card);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(6px);
            transition: var(--transition-base);
        }

        .stats-item:hover {
            border-color: rgba(0, 229, 160, 0.3);
            box-shadow: 0 0 30px rgba(0, 229, 160, 0.1);
        }

        .stats-item strong {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--accent-green);
            display: block;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .stats-item span {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 8px;
            display: block;
        }

        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 420px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ====== FAQ ====== */
        .faq-wrapper {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.02));
            border: 1px solid var(--glass-border);
            border-radius: 16px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-item.active {
            border-color: rgba(0, 229, 160, 0.35);
            box-shadow: 0 0 20px rgba(0, 229, 160, 0.08);
        }

        .faq-question {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            user-select: none;
        }

        .faq-question .q-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(30, 111, 255, 0.15);
            border: 1px solid rgba(30, 111, 255, 0.3);
            color: var(--brand-light);
            font-size: 0.8rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .faq-question h4 {
            flex: 1;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.5;
        }

        .faq-question .arrow {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s ease;
            flex-shrink: 0;
            color: var(--text-secondary);
        }

        .faq-item.active .faq-question .arrow {
            transform: rotate(180deg);
            color: var(--accent-green);
        }

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

        .faq-answer-inner {
            display: flex;
            gap: 14px;
            padding: 0 24px 22px 66px;
        }

        .faq-answer-inner .a-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(0, 229, 160, 0.12);
            border: 1px solid rgba(0, 229, 160, 0.25);
            color: var(--accent-green);
            font-size: 0.8rem;
            font-weight: 800;
            flex-shrink: 0;
        }

        .faq-answer-inner p {
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ====== CTA ====== */
        .cta-section {
            position: relative;
            padding: 90px 0;
            background: linear-gradient(135deg, rgba(6, 11, 22, 0.88), rgba(30, 111, 255, 0.35)), url('/assets/images/backpic/back-3.webp') no-repeat center / cover;
            overflow: hidden;
        }

        .cta-section::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to bottom, var(--bg-primary), transparent);
        }

        .cta-inner {
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
            position: relative;
            z-index: 2;
        }

        .cta-inner h2 {
            font-size: clamp(1.9rem, 4vw, 2.8rem);
            font-weight: 900;
            color: #fff;
            margin-bottom: 16px;
        }

        .cta-inner p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto 24px;
        }

        .cta-form input {
            flex: 1;
            padding: 14px 20px;
            border-radius: var(--radius-input);
            background: rgba(255, 255, 255, 0.07);
            border: 1px solid var(--glass-border);
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition-base);
        }

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

        .cta-form input:focus {
            border-color: var(--accent-green);
            box-shadow: 0 0 0 3px rgba(0, 229, 160, 0.15);
        }

        .cta-form button {
            padding: 14px 28px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--accent-green), #00C488);
            color: #04120B;
            font-weight: 800;
            font-size: 0.95rem;
            box-shadow: var(--shadow-glow-green);
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .cta-form button:hover {
            transform: translateY(-2px);
            filter: brightness(1.08);
        }

        @media (max-width: 520px) {
            .cta-form {
                flex-direction: column;
            }

            .cta-form button {
                width: 100%;
            }
        }

        /* ====== Footer ====== */
        .site-footer {
            background: var(--bg-footer);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 70px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 50px;
        }

        .footer-brand .site-logo {
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 0.92rem;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: 0.04em;
        }

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

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

        .footer-col ul a {
            font-size: 0.88rem;
            color: var(--text-muted);
            transition: var(--transition-base);
        }

        .footer-col ul a:hover {
            color: var(--accent-green);
            padding-left: 4px;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding: 22px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 560px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        /* ====== Reveal animation ====== */
        .reveal {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        @media (prefers-reduced-motion: reduce) {
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
        }