/* roulang page: index */
/* ===== Design Variables ===== */
        :root {
            --primary: #0a1628;
            --primary-light: #162d50;
            --accent: #4d8bf7;
            --accent-glow: rgba(77, 139, 247, 0.5);
            --gradient-btn: linear-gradient(135deg, #4d8bf7 0%, #6ee7b7 100%);
            --gradient-bg: linear-gradient(145deg, #0a1628 0%, #162d50 100%);
            --text-white: #ffffff;
            --text-light: rgba(255, 255, 255, 0.85);
            --text-muted: rgba(255, 255, 255, 0.55);
            --glass-bg: rgba(10, 22, 40, 0.65);
            --glass-border: rgba(255, 255, 255, 0.1);
            --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-nav: 50px;
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --font-en: 'Inter', 'PingFang SC', sans-serif;
            --spacing-section: 100px;
            --max-width: 1280px;
            --container-pad: 24px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            background: var(--primary);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.3s, transform 0.3s;
        }
        a:hover {
            color: #6ee7b7;
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 4px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input,
        textarea {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
            color: inherit;
        }
        button {
            cursor: pointer;
        }

        ul {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        /* ===== Container ===== */
        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--container-pad);
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: calc(100% - 48px);
            max-width: 1200px;
            border-radius: var(--radius-nav);
            background: rgba(10, 22, 40, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            box-shadow: var(--glass-shadow);
            transition: background 0.4s, box-shadow 0.4s;
        }

        .site-header.scrolled {
            background: rgba(10, 22, 40, 0.95);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 60px;
            padding: 0 24px;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
            font-family: var(--font-en);
        }
        .nav-logo i {
            color: var(--accent);
            font-size: 26px;
        }
        .nav-logo span {
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .nav-logo:hover {
            opacity: 0.9;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-links a {
            color: var(--text-light);
            font-size: 15px;
            font-weight: 500;
            position: relative;
            padding: 4px 0;
            transition: color 0.3s;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--gradient-btn);
            border-radius: 2px;
            transition: width 0.3s ease;
        }
        .nav-links a:hover {
            color: var(--text-white);
        }
        .nav-links a:hover::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--accent);
        }
        .nav-links a.active::after {
            width: 100%;
            background: var(--accent);
        }

        .nav-cta {
            background: var(--gradient-btn);
            color: var(--text-white) !important;
            padding: 8px 20px !important;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 14px !important;
            box-shadow: 0 0 20px var(--accent-glow);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .nav-cta:hover {
            transform: scale(1.04);
            box-shadow: 0 0 30px rgba(77, 139, 247, 0.8);
            color: #fff !important;
        }
        .nav-cta::after {
            display: none !important;
        }

        /* Hamburger */
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            background: none;
            border: none;
        }
        .hamburger span {
            display: block;
            width: 26px;
            height: 2px;
            background: var(--text-white);
            border-radius: 2px;
            transition: all 0.3s;
        }
        .hamburger.active span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        /* Mobile Nav */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            background: rgba(10, 22, 40, 0.98);
            backdrop-filter: blur(24px);
            z-index: 999;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.4s ease;
        }
        .mobile-nav.open {
            opacity: 1;
            pointer-events: all;
        }
        .mobile-nav a {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-light);
            transition: color 0.3s;
        }
        .mobile-nav a:hover,
        .mobile-nav a.active {
            color: var(--accent);
        }
        .mobile-nav .nav-cta {
            font-size: 20px !important;
            padding: 14px 40px !important;
        }
        .mobile-close {
            position: absolute;
            top: 28px;
            right: 28px;
            font-size: 32px;
            color: var(--text-white);
            background: none;
            border: none;
            cursor: pointer;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            background: var(--gradient-bg);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            opacity: 0.25;
            mix-blend-mode: overlay;
            z-index: 0;
        }
        .hero::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -20%;
            width: 80%;
            height: 100%;
            background: radial-gradient(circle at 60% 40%, rgba(77, 139, 247, 0.15), transparent 70%);
            z-index: 0;
            pointer-events: none;
        }
        .hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            padding-top: 100px;
            padding-bottom: 80px;
        }
        .hero-content {
            max-width: 640px;
        }
        .hero-content h1 {
            font-size: 64px;
            font-weight: 800;
            line-height: 1.1;
            letter-spacing: -0.02em;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #ffffff 40%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-content .subtitle {
            font-size: 28px;
            font-weight: 400;
            color: var(--text-light);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .hero-content .desc {
            font-size: 18px;
            color: var(--text-muted);
            margin-bottom: 36px;
            max-width: 520px;
        }
        .hero-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: var(--gradient-btn);
            color: #fff !important;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            font-size: 18px;
            font-weight: 600;
            box-shadow: 0 0 20px var(--accent-glow);
            transition: transform 0.3s, box-shadow 0.3s;
            border: none;
        }
        .btn-primary:hover {
            transform: scale(1.04);
            box-shadow: 0 0 30px rgba(77, 139, 247, 0.8);
            color: #fff !important;
        }
        .btn-primary:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 4px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: transparent;
            color: var(--text-white) !important;
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            font-size: 18px;
            font-weight: 500;
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(8px);
            transition: background 0.3s, border-color 0.3s, transform 0.3s;
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--accent);
            transform: scale(1.02);
            color: #fff !important;
        }

        .hero-tags {
            display: flex;
            gap: 24px;
            margin-top: 40px;
            flex-wrap: wrap;
        }
        .hero-tags span {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            background: rgba(255, 255, 255, 0.04);
            padding: 8px 16px;
            border-radius: 50px;
            border: 1px solid var(--glass-border);
            backdrop-filter: blur(6px);
        }
        .hero-tags span i {
            color: var(--accent);
            font-size: 16px;
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
            position: relative;
        }
        .hero-visual img {
            max-width: 100%;
            border-radius: var(--radius-card);
            box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
            border: 1px solid var(--glass-border);
            transform: perspective(1200px) rotateY(-6deg) rotateX(2deg);
            transition: transform 0.8s ease;
        }
        .hero-visual img:hover {
            transform: perspective(1200px) rotateY(0deg) rotateX(0deg);
        }
        .hero-glow {
            position: absolute;
            width: 60%;
            height: 60%;
            background: radial-gradient(circle, rgba(77, 139, 247, 0.2), transparent 70%);
            top: 20%;
            right: 10%;
            pointer-events: none;
            z-index: -1;
        }

        /* ===== Section Shared ===== */
        .section {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-title {
            text-align: center;
            margin-bottom: 56px;
        }
        .section-title h2 {
            font-size: 40px;
            font-weight: 700;
            letter-spacing: -0.02em;
            background: linear-gradient(135deg, #fff 60%, var(--accent) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 12px;
        }
        .section-title p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
        }

        /* ===== Brand Story ===== */
        .brand-story {
            background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
        }
        .story-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .story-image img {
            width: 100%;
            border-radius: var(--radius-card);
            box-shadow: var(--glass-shadow);
            border: 1px solid var(--glass-border);
        }
        .story-text h2 {
            font-size: 38px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        .story-text p {
            font-size: 18px;
            color: var(--text-light);
            margin-bottom: 20px;
            line-height: 1.8;
        }
        .story-text .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent);
            font-weight: 600;
            font-size: 16px;
            margin-top: 8px;
            transition: gap 0.3s;
        }
        .story-text .btn-link:hover {
            gap: 14px;
            color: #6ee7b7;
        }

        /* ===== Services / Cards ===== */
        .services {
            background: var(--primary);
        }
        .cards-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .cards-grid .card:first-child {
            grid-column: 1 / -1;
            max-width: 100%;
        }
        .card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            padding: 32px;
            box-shadow: var(--glass-shadow);
            transition: transform 0.4s, box-shadow 0.4s, border-color 0.4s;
            position: relative;
            overflow: hidden;
        }
        .card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 20% 30%, rgba(77, 139, 247, 0.06), transparent 70%);
            pointer-events: none;
            opacity: 0;
            transition: opacity 0.5s;
        }
        .card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
            border-color: rgba(77, 139, 247, 0.3);
        }
        .card:hover::before {
            opacity: 1;
        }
        .card-icon {
            font-size: 36px;
            color: var(--accent);
            margin-bottom: 16px;
            display: inline-block;
        }
        .card h3 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .card p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .card .btn-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent);
            font-weight: 500;
            font-size: 15px;
            transition: gap 0.3s;
        }
        .card .btn-link:hover {
            gap: 12px;
            color: #6ee7b7;
        }

        /* ===== Latest News (CMS) ===== */
        .latest-news {
            background: var(--primary-light);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .news-card {
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: transform 0.4s, box-shadow 0.4s;
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
        }
        .news-thumb {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .news-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-body .badge {
            display: inline-block;
            background: rgba(77, 139, 247, 0.15);
            color: var(--accent);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 12px;
            border-radius: 50px;
            margin-bottom: 10px;
            align-self: flex-start;
            border: 1px solid rgba(77, 139, 247, 0.2);
        }
        .news-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.3;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body h3 a {
            color: var(--text-white);
            transition: color 0.3s;
        }
        .news-body h3 a:hover {
            color: var(--accent);
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--text-muted);
            border-top: 1px solid var(--glass-border);
            padding-top: 12px;
            margin-top: auto;
        }
        .news-meta .date {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .news-meta .read-link {
            color: var(--accent);
            font-weight: 500;
            transition: color 0.3s;
        }
        .news-meta .read-link:hover {
            color: #6ee7b7;
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-card);
            border: 1px dashed var(--glass-border);
        }
        .news-empty i {
            font-size: 48px;
            color: var(--text-muted);
            margin-bottom: 16px;
        }
        .news-empty p {
            font-size: 18px;
            color: var(--text-muted);
        }

        /* ===== Trust / Stats ===== */
        .trust-section {
            background: var(--primary);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 60px;
        }
        .stat-item {
            text-align: center;
            padding: 32px 16px;
            background: var(--glass-bg);
            backdrop-filter: blur(8px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            transition: transform 0.3s, box-shadow 0.3s;
        }
        .stat-item:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
        }
        .stat-number {
            font-size: 48px;
            font-weight: 800;
            background: var(--gradient-btn);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.1;
        }
        .stat-label {
            font-size: 16px;
            color: var(--text-muted);
            margin-top: 8px;
        }

        .partner-logos {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
            padding: 40px 0;
            border-top: 1px solid var(--glass-border);
        }
        .partner-logos span {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
            opacity: 0.6;
            transition: opacity 0.3s;
        }
        .partner-logos span:hover {
            opacity: 1;
        }
        .partner-logos i {
            font-size: 32px;
            margin-right: 8px;
            color: var(--text-muted);
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: var(--primary-light);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--glass-bg);
            backdrop-filter: blur(8px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color 0.3s;
        }
        .faq-item:hover {
            border-color: rgba(77, 139, 247, 0.2);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-white);
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            transition: color 0.3s;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            font-size: 20px;
            transition: transform 0.3s;
            color: var(--accent);
            flex-shrink: 0;
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(145deg, #0a1628, #162d50);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 70%;
            height: 200%;
            background: radial-gradient(circle, rgba(77, 139, 247, 0.08), transparent 70%);
            pointer-events: none;
        }
        .cta-box {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-box h2 {
            font-size: 38px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-box p {
            font-size: 18px;
            color: var(--text-light);
            margin-bottom: 32px;
        }
        .cta-form {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            background: rgba(0, 0, 0, 0.3);
            border: 1px solid var(--glass-border);
            border-radius: 8px;
            color: var(--text-white);
            font-size: 16px;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        .cta-form input::placeholder {
            color: var(--text-muted);
        }
        .cta-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(77, 139, 247, 0.2);
        }
        .cta-form .btn-primary {
            padding: 14px 36px;
            font-size: 16px;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #070f1e;
            padding: 60px 0 0;
            border-top: 1px solid var(--glass-border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .nav-logo {
            font-size: 20px;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--text-white);
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            padding: 4px 0;
            transition: color 0.3s, padding-left 0.3s;
        }
        .footer-col a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 8px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: rgba(255, 255, 255, 0.05);
            border-radius: 50%;
            color: var(--text-muted);
            font-size: 16px;
            transition: background 0.3s, color 0.3s, transform 0.3s;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            transform: scale(1.1);
        }

        .footer-bottom {
            border-top: 1px solid var(--glass-border);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-muted);
        }
        .footer-bottom a {
            font-size: 13px;
            color: var(--text-muted);
            margin-left: 16px;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero .container {
                grid-template-columns: 1fr;
                text-align: center;
                gap: 40px;
            }
            .hero-content {
                max-width: 100%;
            }
            .hero-content .desc {
                margin: 0 auto 36px;
            }
            .hero-btns {
                justify-content: center;
            }
            .hero-tags {
                justify-content: center;
            }
            .hero-visual img {
                transform: none;
                max-width: 80%;
                margin: 0 auto;
            }
            .hero-visual img:hover {
                transform: none;
            }
            .story-grid {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            .story-text h2 {
                font-size: 32px;
            }
            .cards-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cards-grid .card:first-child {
                grid-column: auto;
            }
            .news-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .section-title h2 {
                font-size: 32px;
            }
            .hero-content h1 {
                font-size: 48px;
            }
            .hero-content .subtitle {
                font-size: 22px;
            }
        }

        @media (max-width: 768px) {
            .site-header {
                top: 12px;
                width: calc(100% - 24px);
            }
            .nav-links {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: flex;
            }
            .mobile-nav.open {
                display: flex;
            }
            .hero {
                min-height: 90vh;
            }
            .hero-content h1 {
                font-size: 36px;
            }
            .hero-content .subtitle {
                font-size: 18px;
            }
            .hero-content .desc {
                font-size: 16px;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-secondary {
                padding: 12px 24px;
                font-size: 15px;
            }
            .hero-tags span {
                font-size: 12px;
                padding: 6px 12px;
            }
            .section {
                padding: 60px 0;
            }
            .section-title h2 {
                font-size: 28px;
            }
            .section-title p {
                font-size: 16px;
            }
            .story-text h2 {
                font-size: 28px;
            }
            .story-text p {
                font-size: 16px;
            }
            .cards-grid {
                grid-template-columns: 1fr;
            }
            .card {
                padding: 24px;
            }
            .card h3 {
                font-size: 20px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .news-body h3 {
                font-size: 18px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .stat-number {
                font-size: 36px;
            }
            .partner-logos {
                gap: 24px;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-item.open .faq-answer {
                padding: 0 18px 16px;
            }
            .cta-box h2 {
                font-size: 28px;
            }
            .cta-form {
                flex-direction: column;
                align-items: center;
            }
            .cta-form input {
                width: 100%;
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                text-align: center;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .footer-social {
                justify-content: center;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom a {
                margin: 0 8px;
            }
            :root {
                --spacing-section: 60px;
                --container-pad: 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 28px;
            }
            .hero-content .subtitle {
                font-size: 16px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: center;
            }
            .hero-tags {
                flex-direction: column;
                align-items: center;
                gap: 12px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .stat-number {
                font-size: 32px;
            }
            .cta-box h2 {
                font-size: 24px;
            }
            .cta-box p {
                font-size: 16px;
            }
            .nav-logo {
                font-size: 18px;
            }
            .nav-logo i {
                font-size: 22px;
            }
        }

        /* ===== Scrollbar ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

        /* ===== Smooth fade-in ===== */
        .fade-in {
            opacity: 0;
            transform: translateY(20px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }

/* roulang page: article */
/* ===== Design Variables ===== */
        :root {
            --primary: #0a1628;
            --primary-light: #162d50;
            --accent: #4d8bf7;
            --accent-green: #6ee7b7;
            --accent-gradient: linear-gradient(135deg, #4d8bf7 0%, #6ee7b7 100%);
            --text-white: #ffffff;
            --text-light: rgba(255,255,255,0.85);
            --text-muted: rgba(255,255,255,0.55);
            --glass-bg: rgba(10,22,40,0.65);
            --glass-border: rgba(255,255,255,0.1);
            --glass-shadow: 0 8px 32px rgba(0,0,0,0.3);
            --card-radius: 16px;
            --btn-radius: 12px;
            --nav-radius: 50px;
            --font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
            --container-max: 1280px;
            --content-max: 800px;
            --spacer: 100px;
            --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
        }

        /* ===== Reset & Base ===== */
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
        body {
            font-family: var(--font-family);
            background: var(--primary);
            color: var(--text-light);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
        }
        a { color: var(--accent); text-decoration: none; transition: var(--transition); }
        a:hover { color: var(--accent-green); }
        img { max-width: 100%; height: auto; display: block; border-radius: 12px; }
        button, input, textarea { font-family: inherit; font-size: inherit; outline: none; border: none; }
        ul, ol { list-style: none; }
        h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; color: var(--text-white); }

        /* ===== Container ===== */
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .container-narrow {
            max-width: var(--content-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Navigation ===== */
        .site-header {
            position: fixed;
            top: 16px;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            justify-content: center;
            padding: 0 24px;
        }
        .nav-bar {
            background: rgba(10,22,40,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--glass-border);
            border-radius: var(--nav-radius);
            padding: 0 24px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--container-max);
            box-shadow: 0 4px 30px rgba(0,0,0,0.4);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-white);
            font-size: 22px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .nav-logo i { font-size: 28px; color: var(--accent); }
        .nav-logo span { background: var(--accent-gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .nav-logo:hover { opacity: 0.9; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            color: var(--text-light);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 30px;
            position: relative;
            transition: var(--transition);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent-gradient);
            border-radius: 2px;
            transition: transform 0.3s ease;
        }
        .nav-links a:hover { color: var(--text-white); background: rgba(77,139,247,0.1); }
        .nav-links a:hover::after { transform: translateX(-50%) scaleX(1); }
        .nav-links a.active { color: var(--accent); background: rgba(77,139,247,0.12); }
        .nav-links a.active::after { transform: translateX(-50%) scaleX(1); }
        .nav-links a.nav-cta {
            background: var(--accent-gradient);
            color: #fff;
            padding: 8px 22px;
            border-radius: 30px;
            font-weight: 600;
            box-shadow: 0 0 20px rgba(77,139,247,0.3);
            transition: var(--transition);
        }
        .nav-links a.nav-cta::after { display: none; }
        .nav-links a.nav-cta:hover {
            box-shadow: 0 0 30px rgba(77,139,247,0.6);
            transform: scale(1.02);
            background: linear-gradient(135deg, #5c97f8 0%, #7eefc5 100%);
        }
        .nav-toggle { display: none; background: none; color: var(--text-white); font-size: 24px; cursor: pointer; padding: 8px; border-radius: 8px; }
        .nav-toggle:hover { background: rgba(255,255,255,0.05); }

        /* ===== Reading Progress ===== */
        .reading-progress {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            z-index: 1001;
            background: rgba(255,255,255,0.05);
        }
        .reading-progress-bar {
            height: 100%;
            width: 0%;
            background: var(--accent-gradient);
            transition: width 0.1s linear;
            border-radius: 0 3px 3px 0;
            box-shadow: 0 0 12px rgba(77,139,247,0.5);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-area {
            padding-top: 100px;
            padding-bottom: 20px;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .breadcrumb a { color: var(--text-muted); }
        .breadcrumb a:hover { color: var(--accent); }
        .breadcrumb .sep { color: var(--text-muted); margin: 0 4px; }
        .breadcrumb .current { color: var(--text-light); }

        /* ===== Article Header ===== */
        .article-header {
            padding: 40px 0 30px;
            border-bottom: 1px solid var(--glass-border);
            margin-bottom: 40px;
        }
        .article-header h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: -0.5px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #fff 60%, rgba(77,139,247,0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 24px;
            font-size: 14px;
            color: var(--text-muted);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item i { color: var(--accent); font-size: 13px; }
        .article-meta .category-badge {
            display: inline-block;
            background: rgba(77,139,247,0.15);
            color: var(--accent);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            border: 1px solid rgba(77,139,247,0.2);
        }

        /* ===== Article Content ===== */
        .article-body {
            padding-bottom: 60px;
        }
        .article-body .cms-content {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-light);
        }
        .article-body .cms-content p {
            margin-bottom: 28px;
        }
        .article-body .cms-content h2 {
            font-size: 30px;
            margin: 48px 0 20px;
            color: var(--text-white);
            font-weight: 700;
        }
        .article-body .cms-content h3 {
            font-size: 24px;
            margin: 36px 0 16px;
            color: var(--text-white);
            font-weight: 600;
        }
        .article-body .cms-content blockquote {
            border-left: 4px solid var(--accent);
            background: rgba(77,139,247,0.08);
            backdrop-filter: blur(8px);
            padding: 20px 28px;
            margin: 24px 0;
            border-radius: 0 12px 12px 0;
            font-style: italic;
            color: var(--text-light);
        }
        .article-body .cms-content pre {
            background: rgba(0,0,0,0.4);
            border: 1px solid var(--glass-border);
            border-radius: 12px;
            padding: 20px 24px;
            overflow-x: auto;
            font-family: 'Fira Code','Consolas',monospace;
            font-size: 14px;
            line-height: 1.6;
            color: #e4e4e4;
            margin: 24px 0;
        }
        .article-body .cms-content code {
            background: rgba(77,139,247,0.1);
            padding: 2px 8px;
            border-radius: 6px;
            font-size: 0.9em;
            color: var(--accent-green);
        }
        .article-body .cms-content pre code {
            background: transparent;
            padding: 0;
            border-radius: 0;
            color: inherit;
        }
        .article-body .cms-content img {
            border-radius: 16px;
            margin: 32px auto;
            box-shadow: var(--glass-shadow);
            max-width: 100%;
        }
        .article-body .cms-content ul, 
        .article-body .cms-content ol {
            padding-left: 24px;
            margin-bottom: 28px;
        }
        .article-body .cms-content ul li {
            list-style-type: disc;
            margin-bottom: 8px;
        }
        .article-body .cms-content ol li {
            list-style-type: decimal;
            margin-bottom: 8px;
        }
        .article-body .cms-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body .cms-content a:hover { color: var(--accent-green); }

        /* ===== Article Not Found ===== */
        .article-not-found {
            text-align: center;
            padding: 80px 24px;
        }
        .article-not-found .icon {
            font-size: 64px;
            color: var(--text-muted);
            margin-bottom: 24px;
            opacity: 0.5;
        }
        .article-not-found h2 {
            font-size: 28px;
            margin-bottom: 16px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 16px;
        }
        .article-not-found .btn-back {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            border-radius: var(--btn-radius);
            background: var(--accent-gradient);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            box-shadow: 0 0 20px rgba(77,139,247,0.3);
            transition: var(--transition);
        }
        .article-not-found .btn-back:hover {
            box-shadow: 0 0 30px rgba(77,139,247,0.6);
            transform: scale(1.02);
            color: #fff;
        }

        /* ===== Related Posts ===== */
        .related-section {
            padding: 60px 0 80px;
            border-top: 1px solid var(--glass-border);
        }
        .related-section .section-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 36px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .related-section .section-title i {
            color: var(--accent);
            font-size: 24px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .related-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--card-radius);
            overflow: hidden;
            transition: var(--transition);
            box-shadow: var(--glass-shadow);
        }
        .related-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 40px rgba(0,0,0,0.5);
            border-color: rgba(77,139,247,0.3);
        }
        .related-card .card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .related-card .card-body {
            padding: 20px 24px 24px;
        }
        .related-card .card-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a {
            color: var(--text-white);
        }
        .related-card .card-body h3 a:hover { color: var(--accent); }
        .related-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            line-height: 1.6;
        }
        .related-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
        }
        .related-card .card-footer .tag {
            background: rgba(77,139,247,0.12);
            color: var(--accent);
            padding: 2px 12px;
            border-radius: 12px;
            font-weight: 500;
            font-size: 11px;
        }
        .related-card .read-more {
            font-size: 13px;
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }
        .related-card .read-more i { font-size: 12px; transition: transform 0.3s; }
        .related-card .read-more:hover i { transform: translateX(4px); }

        /* ===== Bottom Return ===== */
        .bottom-return {
            text-align: center;
            padding: 40px 0 80px;
        }
        .btn-return {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 34px;
            border-radius: var(--btn-radius);
            background: rgba(77,139,247,0.12);
            color: var(--accent);
            font-weight: 600;
            font-size: 15px;
            border: 1px solid rgba(77,139,247,0.2);
            transition: var(--transition);
        }
        .btn-return:hover {
            background: rgba(77,139,247,0.25);
            border-color: var(--accent);
            color: var(--text-white);
            transform: translateY(-2px);
            box-shadow: 0 0 20px rgba(77,139,247,0.2);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #070f1e;
            padding: 60px 0 0;
            border-top: 1px solid var(--glass-border);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .nav-logo { font-size: 20px; margin-bottom: 16px; }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            color: var(--text-white);
            font-weight: 600;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 10px;
            transition: var(--transition);
        }
        .footer-col a:hover { color: var(--accent); padding-left: 4px; }
        .footer-social {
            display: flex;
            gap: 12px;
            margin-top: 12px;
        }
        .footer-social a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255,255,255,0.05);
            color: var(--text-muted);
            font-size: 16px;
            transition: var(--transition);
            margin-bottom: 0;
        }
        .footer-social a:hover {
            background: var(--accent);
            color: #fff;
            padding-left: 0;
            transform: translateY(-2px);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            border-top: 1px solid var(--glass-border);
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom a {
            color: var(--text-muted);
            margin-left: 20px;
            font-size: 13px;
        }
        .footer-bottom a:hover { color: var(--accent); }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .article-header h1 { font-size: 34px; }
            .related-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            .site-header { top: 12px; padding: 0 16px; }
            .nav-bar { padding: 0 16px; height: 54px; }
            .nav-links { display: none; }
            .nav-links.open {
                display: flex;
                flex-direction: column;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(10,22,40,0.98);
                backdrop-filter: blur(24px);
                -webkit-backdrop-filter: blur(24px);
                padding: 80px 32px 32px;
                gap: 12px;
                z-index: 999;
                align-items: center;
                justify-content: center;
            }
            .nav-links.open a {
                font-size: 20px;
                padding: 12px 24px;
                width: auto;
                text-align: center;
            }
            .nav-links.open a.nav-cta { margin-top: 16px; }
            .nav-toggle { display: block; z-index: 1000; }
            .breadcrumb-area { padding-top: 80px; }
            .article-header h1 { font-size: 28px; }
            .article-header { padding: 24px 0 20px; }
            .article-meta { gap: 16px; font-size: 13px; }
            .article-body .cms-content { font-size: 16px; }
            .article-body .cms-content h2 { font-size: 24px; }
            .article-body .cms-content h3 { font-size: 20px; }
            .related-grid { grid-template-columns: 1fr; gap: 20px; }
            .related-section { padding: 40px 0 60px; }
            .related-section .section-title { font-size: 22px; }
            .footer-grid { grid-template-columns: 1fr; gap: 28px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .footer-bottom a { margin: 0 10px; }
            .container { padding: 0 16px; }
            .container-narrow { padding: 0 16px; }
            .bottom-return { padding: 20px 0 40px; }
        }

        @media (max-width: 520px) {
            .article-header h1 { font-size: 24px; }
            .nav-logo { font-size: 18px; }
            .nav-logo i { font-size: 22px; }
            .related-card .card-img { height: 160px; }
            .article-body .cms-content blockquote { padding: 16px 20px; }
            .breadcrumb { font-size: 12px; }
        }

        /* ===== Utility ===== */
        .sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
        .fade-in { animation: fadeIn 0.6s ease forwards; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

/* roulang page: category1 */
:root {
            --primary: #0a1628;
            --primary-light: #162d50;
            --accent: #4d8bf7;
            --accent2: #6ee7b7;
            --bg-card: rgba(10, 22, 40, 0.65);
            --bg-glass: rgba(255, 255, 255, 0.06);
            --border-glass: 1px solid rgba(255, 255, 255, 0.1);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
            --shadow-glow: 0 0 20px rgba(77, 139, 247, 0.5);
            --shadow-glow-hover: 0 0 30px rgba(77, 139, 247, 0.8);
            --radius-card: 16px;
            --radius-btn: 12px;
            --radius-nav: 50px;
            --radius-badge: 4px;
            --text-white: #ffffff;
            --text-muted: rgba(255, 255, 255, 0.7);
            --text-dim: rgba(255, 255, 255, 0.45);
            --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --max-width: 1280px;
            --gap-section: 100px;
            --gap-card: 32px;
            --pad-container: 24px;
            --pad-card: 32px;
            --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.6;
            color: var(--text-white);
            background: var(--primary);
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: var(--accent);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--accent2);
        }
        a:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: var(--radius-card);
        }

        button,
        input,
        textarea {
            font-family: var(--font-sans);
            font-size: 1rem;
            border: none;
            outline: none;
        }

        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--pad-container);
            width: 100%;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 1000;
            width: 90%;
            max-width: 1200px;
            background: rgba(10, 22, 40, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-radius: var(--radius-nav);
            padding: 0 24px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: var(--shadow-card);
            border: var(--border-glass);
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-white);
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            transition: color var(--transition);
        }
        .nav-logo i {
            font-size: 26px;
            color: var(--accent);
        }
        .nav-logo:hover {
            color: var(--accent);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a {
            color: var(--text-muted);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 18px;
            border-radius: 50px;
            transition: all var(--transition);
            position: relative;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
            transition: transform var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-links a:hover {
            color: var(--text-white);
        }
        .nav-links a.active {
            color: var(--accent);
        }
        .nav-links a.nav-cta {
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            color: #fff;
            box-shadow: var(--shadow-glow);
            padding: 8px 22px;
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-links a.nav-cta::after {
            display: none;
        }
        .nav-links a.nav-cta:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: scale(1.02);
            color: #fff;
        }

        .nav-toggle {
            display: none;
            background: none;
            color: var(--text-white);
            font-size: 24px;
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-glass);
        }

        @media (max-width: 768px) {
            .site-header {
                top: 12px;
                padding: 0 16px;
                height: 54px;
                width: 94%;
            }
            .nav-links {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(10, 22, 40, 0.98);
                backdrop-filter: blur(30px);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 24px;
                border-radius: 0;
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                font-size: 20px;
                padding: 14px 32px;
            }
            .nav-links a.nav-cta {
                font-size: 18px;
                padding: 14px 36px;
            }
            .nav-toggle {
                display: block;
                z-index: 1001;
            }
        }

        /* ===== 面包屑 ===== */
        .breadcrumb {
            padding: 100px 0 20px;
            font-size: 14px;
            color: var(--text-dim);
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: var(--pad-container);
            padding-right: var(--pad-container);
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--accent);
        }
        .breadcrumb span {
            color: var(--accent);
        }
        .breadcrumb .sep {
            margin: 0 8px;
            color: var(--text-dim);
        }

        /* ===== Hero ===== */
        .hero-cloud {
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 50%, #0d1f3c 100%);
            overflow: hidden;
            padding: 140px 0 80px;
        }
        .hero-cloud::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            opacity: 0.2;
            mix-blend-mode: overlay;
            z-index: 0;
        }
        .hero-cloud::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(77, 139, 247, 0.15), transparent 70%);
            z-index: 0;
        }
        .hero-cloud .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .hero-cloud h1 {
            font-size: 64px;
            font-weight: 700;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(to right, #fff, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-cloud h1 .highlight {
            -webkit-text-fill-color: var(--accent);
        }
        .hero-cloud .subtitle {
            font-size: 26px;
            font-weight: 400;
            color: var(--text-muted);
            max-width: 720px;
            margin: 0 auto 40px;
            line-height: 1.5;
        }
        .hero-cloud .hero-actions {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .hero-cloud .hero-actions .btn-primary {
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            color: #fff;
            padding: 16px 42px;
            border-radius: var(--radius-btn);
            font-size: 18px;
            font-weight: 600;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
            border: none;
        }
        .hero-cloud .hero-actions .btn-primary:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: scale(1.02);
        }
        .hero-cloud .hero-actions .btn-outline {
            background: transparent;
            color: var(--text-white);
            padding: 16px 42px;
            border-radius: var(--radius-btn);
            font-size: 18px;
            font-weight: 600;
            border: 1px solid rgba(255, 255, 255, 0.25);
            transition: all var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            cursor: pointer;
        }
        .hero-cloud .hero-actions .btn-outline:hover {
            border-color: var(--accent);
            background: rgba(77, 139, 247, 0.1);
            box-shadow: var(--shadow-glow);
        }

        .hero-stats {
            display: flex;
            justify-content: center;
            gap: 60px;
            margin-top: 60px;
            flex-wrap: wrap;
        }
        .hero-stats .stat-item {
            text-align: center;
        }
        .hero-stats .stat-item .number {
            font-size: 40px;
            font-weight: 700;
            color: var(--accent);
            display: block;
            line-height: 1.2;
        }
        .hero-stats .stat-item .label {
            font-size: 14px;
            color: var(--text-dim);
            margin-top: 4px;
        }

        @media (max-width: 768px) {
            .hero-cloud h1 {
                font-size: 36px;
            }
            .hero-cloud .subtitle {
                font-size: 18px;
                padding: 0 12px;
            }
            .hero-stats {
                gap: 30px;
            }
            .hero-stats .stat-item .number {
                font-size: 30px;
            }
        }
        @media (max-width: 520px) {
            .hero-cloud {
                min-height: 60vh;
                padding: 120px 0 60px;
            }
            .hero-cloud h1 {
                font-size: 28px;
            }
            .hero-cloud .subtitle {
                font-size: 16px;
            }
            .hero-cloud .hero-actions .btn-primary,
            .hero-cloud .hero-actions .btn-outline {
                padding: 14px 28px;
                font-size: 16px;
            }
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: var(--gap-section) 0;
        }
        .section-title {
            font-size: 40px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 16px;
            line-height: 1.2;
        }
        .section-sub {
            font-size: 18px;
            color: var(--text-muted);
            text-align: center;
            max-width: 680px;
            margin: 0 auto 60px;
            line-height: 1.7;
        }

        @media (max-width: 768px) {
            .section {
                --gap-section: 60px;
                padding: 60px 0;
            }
            .section-title {
                font-size: 30px;
            }
            .section-sub {
                font-size: 16px;
                margin-bottom: 40px;
            }
        }

        /* ===== 能力矩阵 ===== */
        .capabilities-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: var(--gap-card);
        }
        .cap-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: var(--border-glass);
            border-radius: var(--radius-card);
            padding: var(--pad-card);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .cap-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent2));
            opacity: 0;
            transition: opacity var(--transition);
        }
        .cap-card:hover::before {
            opacity: 1;
        }
        .cap-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
            border-color: rgba(77, 139, 247, 0.3);
        }
        .cap-card .icon {
            font-size: 36px;
            color: var(--accent);
            margin-bottom: 18px;
            display: inline-block;
        }
        .cap-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text-white);
        }
        .cap-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .cap-card .tag {
            display: inline-block;
            margin-top: 16px;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            background: rgba(77, 139, 247, 0.15);
            color: var(--accent);
            font-size: 12px;
            font-weight: 500;
        }

        /* ===== 架构流程 ===== */
        .flow-section {
            background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 100%);
            position: relative;
        }
        .flow-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.08;
            mix-blend-mode: overlay;
            z-index: 0;
        }
        .flow-section .container {
            position: relative;
            z-index: 1;
        }
        .flow-steps {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            position: relative;
        }
        .flow-steps::before {
            content: '';
            position: absolute;
            top: 44px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent), var(--accent2), var(--accent));
            opacity: 0.3;
            z-index: 0;
        }
        .flow-step {
            flex: 1;
            min-width: 160px;
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--bg-card);
            backdrop-filter: blur(8px);
            border: var(--border-glass);
            border-radius: var(--radius-card);
            padding: 28px 16px;
            transition: all var(--transition);
        }
        .flow-step:hover {
            transform: translateY(-4px);
            border-color: rgba(77, 139, 247, 0.3);
        }
        .flow-step .step-num {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 16px;
            color: #fff;
            box-shadow: 0 0 20px rgba(77, 139, 247, 0.3);
        }
        .flow-step h4 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .flow-step p {
            font-size: 14px;
            color: var(--text-muted);
        }

        @media (max-width: 768px) {
            .flow-steps::before {
                display: none;
            }
            .flow-step {
                min-width: 140px;
                flex: 1 1 40%;
            }
        }
        @media (max-width: 520px) {
            .flow-step {
                flex: 1 1 100%;
            }
        }

        /* ===== 场景卡片 ===== */
        .scenes-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--gap-card);
        }
        .scene-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            border: var(--border-glass);
            border-radius: var(--radius-card);
            padding: var(--pad-card);
            box-shadow: var(--shadow-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
            border-color: rgba(77, 139, 247, 0.25);
        }
        .scene-card .scene-icon {
            font-size: 42px;
            color: var(--accent);
            margin-bottom: 16px;
        }
        .scene-card h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 10px;
        }
        .scene-card p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
        }
        .scene-card .scene-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 18px;
        }
        .scene-card .scene-tags span {
            padding: 4px 12px;
            border-radius: 50px;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-dim);
            font-size: 12px;
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        /* ===== 数据指标 ===== */
        .metrics-section {
            background: var(--primary-light);
            position: relative;
        }
        .metrics-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .metrics-section .container {
            position: relative;
            z-index: 1;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            text-align: center;
        }
        .metric-item .metric-number {
            font-size: 52px;
            font-weight: 700;
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }
        .metric-item .metric-label {
            font-size: 16px;
            color: var(--text-muted);
            margin-top: 6px;
        }

        @media (max-width: 768px) {
            .metrics-grid {
                gap: 28px;
            }
            .metric-item .metric-number {
                font-size: 38px;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--bg-card);
            backdrop-filter: blur(8px);
            border: var(--border-glass);
            border-radius: var(--radius-card);
            padding: 0;
            overflow: hidden;
            transition: border-color var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(77, 139, 247, 0.2);
        }
        .faq-item summary {
            padding: 20px 24px;
            font-size: 17px;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            list-style: none;
            transition: background var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: '+';
            font-size: 24px;
            color: var(--accent);
            font-weight: 300;
            transition: transform var(--transition);
            flex-shrink: 0;
            margin-left: 16px;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-item[open] summary {
            background: rgba(77, 139, 247, 0.06);
        }
        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: 16px;
            margin-top: 0;
        }

        @media (max-width: 520px) {
            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #0d1f3c 100%);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/coverpic/cover-5.png') center/cover no-repeat;
            opacity: 0.06;
            mix-blend-mode: overlay;
        }
        .cta-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 18px;
            color: var(--text-muted);
            max-width: 560px;
            margin: 0 auto 36px;
            line-height: 1.7;
        }
        .cta-form {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 20px;
            border-radius: var(--radius-btn);
            background: rgba(0, 0, 0, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-white);
            font-size: 16px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .cta-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(77, 139, 247, 0.2);
        }
        .cta-form input::placeholder {
            color: var(--text-dim);
        }
        .cta-form button {
            padding: 14px 36px;
            border-radius: var(--radius-btn);
            background: linear-gradient(135deg, var(--accent), var(--accent2));
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            box-shadow: var(--shadow-glow);
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .cta-form button:hover {
            box-shadow: var(--shadow-glow-hover);
            transform: scale(1.02);
        }

        @media (max-width: 520px) {
            .cta-section h2 {
                font-size: 28px;
            }
            .cta-form input {
                min-width: 100%;
            }
            .cta-form button {
                width: 100%;
                justify-content: center;
            }
        }

        /* ===== 图文区块 ===== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse>* {
            direction: ltr;
        }
        .feature-text h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .feature-text p {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-text ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .feature-text ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            color: var(--text-muted);
        }
        .feature-text ul li i {
            color: var(--accent);
            font-size: 18px;
            margin-top: 2px;
            flex-shrink: 0;
        }
        .feature-image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--bg-card);
            min-height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-card);
        }

        @media (max-width: 1024px) {
            .feature-row {
                gap: 40px;
            }
            .feature-text h2 {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            .feature-row {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .feature-row.reverse {
                direction: ltr;
            }
            .feature-text h2 {
                font-size: 26px;
            }
            .feature-image {
                min-height: 220px;
            }
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: #070f1e;
            padding: 80px 0 0;
            border-top: 1px solid rgba(255, 255, 255, 0.04);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .footer-brand .nav-logo {
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 15px;
            color: var(--text-dim);
            max-width: 320px;
            line-height: 1.7;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--text-dim);
            margin-bottom: 12px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-social {
            display: flex;
            gap: 16px;
            margin-top: 16px;
        }
        .footer-social a {
            font-size: 20px;
            color: var(--text-dim);
            margin-bottom: 0;
            transition: color var(--transition);
        }
        .footer-social a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 24px 0;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: var(--text-dim);
        }
        .footer-bottom div {
            display: flex;
            gap: 20px;
        }
        .footer-bottom div a {
            font-size: 13px;
            color: var(--text-dim);
        }
        .footer-bottom div a:hover {
            color: var(--accent);
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
            .footer-brand p {
                max-width: 100%;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom div {
                justify-content: center;
            }
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: var(--primary);
        }
        ::-webkit-scrollbar-thumb {
            background: var(--primary-light);
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: var(--accent);
        }

        /* ===== 辅助 ===== */
        .text-center {
            text-align: center;
        }
        .mt-20 {
            margin-top: 20px;
        }
        .mb-20 {
            margin-bottom: 20px;
        }
        .gap-16 {
            gap: 16px;
        }
        .flex-center {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        @media (max-width: 520px) {
            :root {
                --pad-container: 16px;
                --pad-card: 20px;
                --gap-card: 20px;
            }
        }