/* roulang page: index */
:root {
            --primary: #1a3c34;
            --primary-light: #2a5c4f;
            --primary-dark: #0f2a24;
            --primary-soft: #e8f0ed;
            --accent: #c9a227;
            --accent-light: #e0bc4d;
            --accent-soft: #faf3df;
            --bg: #f7f5f0;
            --bg-warm: #fdfcf9;
            --bg-dark: #16211e;
            --text: #2c2c2c;
            --text-muted: #5f6b67;
            --text-light: #8a9691;
            --text-on-dark: #f4f7f5;
            --text-on-dark-muted: #b8c5c0;
            --border: #e5e0d5;
            --border-light: #edeae2;
            --card-bg: #ffffff;
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.16);
            --space-xs: 4px;
            --space-sm: 8px;
            --space-md: 16px;
            --space-lg: 24px;
            --space-xl: 32px;
            --space-xxl: 48px;
            --space-xxxl: 64px;
            --font-size-sm: 14px;
            --font-size-base: 16px;
            --font-size-md: 18px;
            --font-size-lg: 20px;
            --font-size-xl: 24px;
            --font-size-xxl: 32px;
            --font-size-hero: 42px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
        }

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

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

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            font-size: var(--font-size-base);
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

        button {
            cursor: pointer;
            background: none;
        }

        ul,
        ol {
            list-style: none;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .container-wide {
            width: 100%;
            max-width: 1360px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 20px;
            color: var(--primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .site-logo-icon {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 18px;
            flex-shrink: 0;
        }

        .site-logo-text {
            display: flex;
            flex-direction: column;
            line-height: 1.2;
        }

        .site-logo-text .logo-name {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .site-logo-text .logo-sub {
            font-size: 10px;
            font-weight: 400;
            color: var(--text-muted);
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }

        .main-nav-link:hover {
            color: var(--primary);
            background-color: var(--primary-soft);
        }

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

        .main-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 18px;
            right: 18px;
            height: 2px;
            background-color: var(--accent);
            border-radius: 2px;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            background-color: var(--primary);
            border-radius: 50px;
            transition: var(--transition);
            white-space: nowrap;
            margin-left: 8px;
        }

        .nav-cta:hover {
            background-color: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(26, 60, 52, 0.3);
        }

        .nav-cta:active {
            transform: translateY(0);
        }

        .nav-cta:focus-visible,
        .main-nav-link:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        /* ============ Hero ============ */
        .hero {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            background-image: linear-gradient(135deg, rgba(15, 42, 36, 0.88) 0%, rgba(26, 60, 52, 0.78) 40%, rgba(26, 60, 52, 0.65) 100%),
                url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: var(--space-xxl) 0 var(--space-xl);
            overflow: hidden;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 120px;
            background: linear-gradient(to bottom, transparent 0%, var(--bg) 100%);
            pointer-events: none;
        }

        .hero .container {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 0;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-light);
            background-color: rgba(201, 162, 39, 0.15);
            border: 1px solid rgba(201, 162, 39, 0.35);
            border-radius: 50px;
            margin-bottom: var(--space-lg);
            letter-spacing: 1px;
        }

        .hero-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--accent);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.5); }
        }

        .hero h1 {
            font-size: var(--font-size-hero);
            font-weight: 700;
            color: #fff;
            letter-spacing: 2px;
            line-height: 1.3;
            margin-bottom: var(--space-md);
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
            max-width: 800px;
        }

        .hero-description {
            font-size: 16.5px;
            color: rgba(255, 255, 255, 0.88);
            line-height: 1.8;
            max-width: 680px;
            margin-bottom: var(--space-xl);
            letter-spacing: 0.3px;
        }

        .hero-search-wrapper {
            width: 100%;
            max-width: 620px;
            margin: 0 auto var(--space-lg);
        }

        .hero-search-form {
            display: flex;
            align-items: center;
            gap: 0;
            background-color: #fff;
            border-radius: 50px;
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
            overflow: hidden;
            transition: var(--transition);
        }

        .hero-search-form:focus-within {
            box-shadow: 0 12px 48px rgba(0, 0, 0, 0.35), 0 0 0 3px var(--accent);
        }

        .hero-search-icon {
            padding-left: 20px;
            font-size: 18px;
            color: var(--text-light);
            flex-shrink: 0;
        }

        .hero-search-input {
            flex: 1;
            padding: 16px 12px;
            font-size: 15px;
            color: var(--text);
            background: transparent;
        }

        .hero-search-input::placeholder {
            color: var(--text-light);
            letter-spacing: 0.5px;
        }

        .hero-search-btn {
            padding: 14px 28px;
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            background-color: var(--primary);
            border-radius: 0 50px 50px 0;
            transition: var(--transition);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

        .hero-search-btn:hover {
            background-color: var(--primary-light);
        }

        .hero-search-btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: -2px;
        }

        .hero-quick-tags {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 10px;
            margin-bottom: var(--space-xl);
        }

        .hero-quick-tags-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            letter-spacing: 1px;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            padding: 7px 18px;
            font-size: 14px;
            font-weight: 500;
            color: #fff;
            background-color: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 50px;
            transition: var(--transition);
            cursor: pointer;
            letter-spacing: 0.5px;
        }

        .hero-tag:hover {
            background-color: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.45);
            transform: translateY(-2px);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 40px;
            margin-top: var(--space-sm);
        }

        .hero-stat {
            text-align: center;
        }

        .hero-stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent-light);
            letter-spacing: 0.5px;
        }

        .hero-stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            letter-spacing: 1px;
            margin-top: 4px;
        }

        .hero-stat-divider {
            width: 1px;
            height: 40px;
            background-color: rgba(255, 255, 255, 0.2);
        }

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

        .section-header {
            margin-bottom: var(--space-xl);
        }

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

        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 2px;
            text-transform: uppercase;
            margin-bottom: var(--space-sm);
        }

        .section-tag::before {
            content: '';
            width: 24px;
            height: 2px;
            background-color: var(--accent);
            border-radius: 2px;
        }

        .section-title {
            font-size: var(--font-size-xxl);
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            line-height: 1.35;
            margin-bottom: var(--space-sm);
        }

        .section-description {
            font-size: 15.5px;
            color: var(--text-muted);
            line-height: 1.8;
            max-width: 720px;
        }

        .section-header.center .section-description {
            margin-left: auto;
            margin-right: auto;
        }

        /* ============ Entrance Matrix (入口矩阵) ============ */
        .entrance-matrix {
            background-color: var(--bg-warm);
        }

        .entrance-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .entrance-card {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            background-color: var(--card-bg);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
            aspect-ratio: 4/5;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
        }

        .entrance-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }

        .entrance-card-image {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .entrance-card:hover .entrance-card-image {
            transform: scale(1.06);
        }

        .entrance-card-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 42, 36, 0.88) 0%, rgba(15, 42, 36, 0.35) 45%, transparent 75%);
            z-index: 1;
        }

        .entrance-card-content {
            position: relative;
            z-index: 2;
            padding: 20px 18px;
            text-align: left;
        }

        .entrance-card-name {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .entrance-card-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.6;
            max-height: 0;
            overflow: hidden;
            opacity: 0;
            transition: var(--transition);
        }

        .entrance-card:hover .entrance-card-desc {
            max-height: 80px;
            opacity: 1;
        }

        .entrance-card-arrow {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 13px;
            font-weight: 500;
            color: var(--accent-light);
            margin-top: 8px;
            opacity: 0;
            transform: translateX(-8px);
            transition: var(--transition);
        }

        .entrance-card:hover .entrance-card-arrow {
            opacity: 1;
            transform: translateX(0);
        }

        /* ============ Milestone / Data Board ============ */
        .milestone {
            background-color: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .milestone::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(201, 162, 39, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .milestone::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(201, 162, 39, 0.1) 0%, transparent 70%);
            pointer-events: none;
        }

        .milestone .container {
            position: relative;
            z-index: 1;
        }

        .milestone-header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }

        .milestone-header .section-title {
            color: #fff;
        }

        .milestone-header .section-description {
            color: var(--text-on-dark-muted);
            margin-left: auto;
            margin-right: auto;
        }

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

        .milestone-card {
            text-align: center;
            padding: 28px 20px;
            background-color: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
        }

        .milestone-card:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: rgba(201, 162, 39, 0.35);
            transform: translateY(-4px);
        }

        .milestone-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--accent-light);
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        .milestone-number span {
            font-size: 18px;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.5);
            margin-left: 2px;
        }

        .milestone-label {
            font-size: 15px;
            font-weight: 500;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .milestone-desc {
            font-size: 13px;
            color: var(--text-on-dark-muted);
            line-height: 1.6;
        }

        /* ============ News / Information ============ */
        .news-section {
            background-color: var(--bg);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 36px;
        }

        .news-list-col {
            display: flex;
            flex-direction: column;
        }

        .news-list-title-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--border);
            margin-bottom: 16px;
        }

        .news-list-title-bar h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
        }

        .news-list-title-bar a {
            font-size: 13px;
            color: var(--text-muted);
            letter-spacing: 0.5px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-list-title-bar a:hover {
            color: var(--accent);
        }

        .news-link-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 15px 8px;
            border-bottom: 1px solid var(--border-light);
            transition: var(--transition);
            cursor: pointer;
        }

        .news-link-item:hover {
            background-color: var(--bg-warm);
            padding-left: 16px;
        }

        .news-link-text {
            flex: 1;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-link-item:hover .news-link-text {
            color: var(--primary);
        }

        .news-link-date {
            font-size: 12.5px;
            color: var(--text-light);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.5px;
        }

        .news-link-arrow {
            font-size: 14px;
            color: var(--text-light);
            transition: var(--transition);
            flex-shrink: 0;
        }

        .news-link-item:hover .news-link-arrow {
            color: var(--accent);
            transform: translateX(4px);
        }

        .news-recommend-col {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-recommend-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--border);
            margin-bottom: 0;
        }

        .news-recommend-card {
            display: flex;
            align-items: center;
            gap: 16px;
            background-color: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 14px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
        }

        .news-recommend-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .news-recommend-image {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
        }

        .news-recommend-info {
            flex: 1;
            min-width: 0;
        }

        .news-recommend-category {
            font-size: 11px;
            font-weight: 600;
            color: var(--accent);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 4px;
        }

        .news-recommend-name {
            font-size: 14.5px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-recommend-card:hover .news-recommend-name {
            color: var(--primary);
        }

        /* ============ Comparison (结果对比) ============ */
        .comparison-section {
            background-color: var(--bg-warm);
        }

        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            margin-top: var(--space-lg);
        }

        .comparison-card {
            border-radius: var(--radius-lg);
            padding: 28px 26px;
            background-color: #fff;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            transition: var(--transition);
        }

        .comparison-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .comparison-card.highlight {
            border: 2px solid var(--accent);
            background: linear-gradient(135deg, #fffdf6 0%, #fff 100%);
            position: relative;
        }

        .comparison-card.highlight::before {
            content: '推荐';
            position: absolute;
            top: -12px;
            right: 20px;
            padding: 4px 14px;
            font-size: 12px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
            border-radius: 50px;
            letter-spacing: 1px;
        }

        .comparison-card-title {
            font-size: 19px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-light);
        }

        .comparison-card.highlight .comparison-card-title {
            color: var(--accent);
            border-bottom-color: var(--accent-soft);
        }

        .comparison-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
        }

        .comparison-item-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .comparison-item-icon.check {
            background-color: #e8f5ee;
            color: #2e7d32;
        }

        .comparison-item-icon.cross {
            background-color: #fbe9e7;
            color: #c62828;
        }

        .comparison-item-text {
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .comparison-item-text strong {
            color: var(--text);
            font-weight: 600;
        }

        /* ============ Platform Guarantee (平台保障) ============ */
        .guarantee-section {
            background-color: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .guarantee-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(201, 162, 39, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .guarantee-section .container {
            position: relative;
            z-index: 1;
        }

        .guarantee-header {
            text-align: center;
            margin-bottom: var(--space-xl);
        }

        .guarantee-header .section-title {
            color: #fff;
        }

        .guarantee-header .section-description {
            color: var(--text-on-dark-muted);
            margin-left: auto;
            margin-right: auto;
        }

        .guarantee-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .guarantee-card {
            padding: 28px 24px;
            background-color: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-lg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            transition: var(--transition);
            text-align: center;
        }

        .guarantee-card:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: rgba(201, 162, 39, 0.4);
            transform: translateY(-5px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
        }

        .guarantee-icon {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            margin-bottom: 16px;
        }

        .guarantee-card-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        .guarantee-card-desc {
            font-size: 14px;
            color: var(--text-on-dark-muted);
            line-height: 1.7;
        }

        /* ============ FAQ ============ */
        .faq-section {
            background-color: var(--bg);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background-color: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-item.open {
            border-color: var(--accent);
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            cursor: pointer;
            font-size: 15.5px;
            font-weight: 600;
            color: var(--text);
            letter-spacing: 0.5px;
            transition: var(--transition);
            user-select: none;
        }

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

        .faq-toggle-icon {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 500;
            transition: var(--transition);
            flex-shrink: 0;
        }

        .faq-item.open .faq-toggle-icon {
            background-color: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer-inner {
            padding: 0 22px 18px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        /* ============ CTA / Form (转化表单) ============ */
        .cta-section {
            background-color: var(--bg-warm);
        }

        .cta-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .cta-info {
            padding: var(--space-lg) 0;
        }

        .cta-info .section-title {
            margin-bottom: var(--space-md);
        }

        .cta-info-list {
            margin-top: var(--space-lg);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .cta-info-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .cta-info-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background-color: var(--primary-soft);
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            flex-shrink: 0;
            margin-top: 2px;
        }

        .cta-form-card {
            background-color: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
            padding: 32px 28px;
            border: 1px solid var(--border-light);
        }

        .cta-form-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .cta-form-subtitle {
            font-size: 13.5px;
            color: var(--text-muted);
            margin-bottom: 20px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-label {
            display: block;
            font-size: 13.5px;
            font-weight: 600;
            color: var(--text);
            letter-spacing: 0.5px;
            margin-bottom: 6px;
        }

        .form-label .required {
            color: #c62828;
        }

        .form-input,
        .form-select,
        .form-textarea {
            width: 100%;
            padding: 12px 14px;
            font-size: 14.5px;
            color: var(--text);
            background-color: var(--bg-warm);
            border: 1.5px solid var(--border);
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }

        .form-input:focus,
        .form-select:focus,
        .form-textarea:focus {
            border-color: var(--accent);
            background-color: #fff;
            box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.15);
        }

        .form-input::placeholder,
        .form-textarea::placeholder {
            color: var(--text-light);
            letter-spacing: 0.3px;
        }

        .form-textarea {
            min-height: 90px;
            resize: vertical;
        }

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

        .form-submit-btn {
            width: 100%;
            padding: 14px;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            border-radius: var(--radius-sm);
            transition: var(--transition);
            letter-spacing: 2px;
            cursor: pointer;
        }

        .form-submit-btn:hover {
            background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
            box-shadow: 0 8px 24px rgba(26, 60, 52, 0.3);
            transform: translateY(-2px);
        }

        .form-submit-btn:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .form-submit-btn:focus-visible {
            outline: 3px solid var(--accent);
            outline-offset: 2px;
        }

        .form-success-msg {
            display: none;
            padding: 14px 18px;
            background-color: #e8f5ee;
            color: #2e7d32;
            border-radius: var(--radius-sm);
            font-size: 14px;
            font-weight: 500;
            text-align: center;
            letter-spacing: 0.5px;
            margin-top: 12px;
        }

        .form-success-msg.show {
            display: block;
            animation: fadeInUp 0.4s ease;
        }

        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(8px); }
            to { opacity: 1; transform: translateY(0); }
        }

        /* ============ App / Contact Block ============ */
        .app-section {
            background-color: var(--primary);
            position: relative;
            overflow: hidden;
        }

        .app-section::before {
            content: '';
            position: absolute;
            top: -80px;
            left: -80px;
            width: 350px;
            height: 350px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(201, 162, 39, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .app-section .container {
            position: relative;
            z-index: 1;
            text-align: center;
        }

        .app-section .section-title {
            color: #fff;
        }

        .app-section .section-description {
            color: var(--text-on-dark-muted);
            margin-left: auto;
            margin-right: auto;
            margin-bottom: var(--space-xl);
        }

        .app-contact-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: var(--space-lg);
        }

        .app-contact-card {
            padding: 24px;
            background-color: rgba(255, 255, 255, 0.07);
            border-radius: var(--radius-md);
            border: 1px solid rgba(255, 255, 255, 0.12);
            transition: var(--transition);
        }

        .app-contact-card:hover {
            background-color: rgba(255, 255, 255, 0.12);
            border-color: rgba(201, 162, 39, 0.4);
            transform: translateY(-4px);
        }

        .app-contact-icon {
            font-size: 28px;
            color: var(--accent-light);
            margin-bottom: 10px;
        }

        .app-contact-label {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 6px;
        }

        .app-contact-value {
            font-size: 14px;
            color: var(--text-on-dark-muted);
            line-height: 1.7;
        }

        /* ============ Footer ============ */
        .site-footer {
            background-color: #0f1a17;
            padding: var(--space-xl) 0 var(--space-md);
            color: var(--text-on-dark-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: var(--space-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand .site-logo {
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-brand .site-logo-icon {
            background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
            color: var(--primary);
        }

        .footer-brand-desc {
            font-size: 13.5px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }

        .footer-col-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 14px;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-link {
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.55);
            transition: var(--transition);
            cursor: pointer;
        }

        .footer-link:hover {
            color: var(--accent-light);
            transform: translateX(2px);
        }

        .footer-contact-item {
            display: flex;
            align-items: flex-start;
            gap: 8px;
            font-size: 13.5px;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 8px;
        }

        .footer-bottom {
            padding-top: var(--space-md);
            text-align: center;
            font-size: 12.5px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.5px;
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        /* ============ Responsive Breakpoints ============ */
        @media (max-width: 1024px) {
            :root {
                --font-size-hero: 34px;
            }

            .hero {
                min-height: 540px;
            }

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

            .entrance-card {
                aspect-ratio: 16/11;
            }

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

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

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

            .footer-grid {
                grid-template-columns: 1.2fr 1fr 1fr;
                gap: 24px;
            }

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

            .comparison-wrapper {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .cta-wrapper {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .cta-info {
                padding: var(--space-md) 0 0;
            }
        }

        @media (max-width: 768px) {
            :root {
                --font-size-hero: 28px;
                --font-size-xxl: 24px;
                --space-xxl: 36px;
                --space-xxxl: 48px;
            }

            .site-header .container {
                height: 58px;
                padding-left: 14px;
                padding-right: 14px;
            }

            .site-logo-text .logo-name {
                font-size: 16px;
                letter-spacing: 0.5px;
            }

            .site-logo-text .logo-sub {
                display: none;
            }

            .site-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }

            .main-nav-link {
                padding: 6px 12px;
                font-size: 14px;
            }

            .nav-cta {
                padding: 8px 16px;
                font-size: 13px;
                margin-left: 4px;
            }

            .hero {
                min-height: 480px;
                padding: var(--space-lg) 0 var(--space-xl);
            }

            .hero h1 {
                font-size: 24px;
                letter-spacing: 1px;
            }

            .hero-description {
                font-size: 14.5px;
                max-width: 100%;
            }

            .hero-search-wrapper {
                max-width: 100%;
            }

            .hero-search-btn {
                padding: 12px 18px;
                font-size: 13px;
            }

            .hero-search-input {
                padding: 12px 10px;
                font-size: 13.5px;
            }

            .hero-search-icon {
                padding-left: 14px;
                font-size: 15px;
            }

            .hero-quick-tags {
                gap: 6px;
            }

            .hero-tag {
                padding: 5px 12px;
                font-size: 12px;
            }

            .hero-stats {
                gap: 20px;
            }

            .hero-stat-number {
                font-size: 22px;
            }

            .hero-stat-label {
                font-size: 11.5px;
            }

            .hero-stat-divider {
                height: 30px;
            }

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

            .section-title {
                font-size: 20px;
                letter-spacing: 0.5px;
            }

            .section-description {
                font-size: 14px;
            }

            .entrance-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .entrance-card {
                aspect-ratio: 16/10;
            }

            .entrance-card-desc {
                max-height: 60px;
                opacity: 1;
            }

            .entrance-card-arrow {
                opacity: 1;
                transform: translateX(0);
            }

            .milestone-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .milestone-card {
                padding: 20px 16px;
            }

            .milestone-number {
                font-size: 30px;
            }

            .news-layout {
                gap: 22px;
            }

            .news-link-item {
                padding: 12px 4px;
                gap: 10px;
            }

            .news-link-text {
                font-size: 14px;
            }

            .news-link-date {
                font-size: 11px;
            }

            .news-recommend-card {
                padding: 10px;
                gap: 10px;
            }

            .news-recommend-image {
                width: 60px;
                height: 60px;
            }

            .news-recommend-name {
                font-size: 13px;
            }

            .guarantee-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }

            .guarantee-card {
                padding: 20px 16px;
            }

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

            .faq-toggle-icon {
                width: 22px;
                height: 22px;
                font-size: 15px;
            }

            .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 13.5px;
                padding-top: 10px;
            }

            .cta-form-card {
                padding: 20px 16px;
            }

            .form-row {
                grid-template-columns: 1fr;
                gap: 0;
            }

            .app-contact-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .app-contact-card {
                padding: 18px 16px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

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

        @media (max-width: 520px) {
            :root {
                --font-size-hero: 22px;
            }

            .site-header .container {
                height: 52px;
                padding-left: 10px;
                padding-right: 10px;
            }

            .site-logo-text .logo-name {
                font-size: 14px;
            }

            .main-nav-link {
                padding: 5px 10px;
                font-size: 13px;
            }

            .nav-cta {
                padding: 7px 12px;
                font-size: 12px;
            }

            .hero {
                min-height: 440px;
                padding: var(--space-md) 0 var(--space-lg);
            }

            .hero h1 {
                font-size: 20px;
                letter-spacing: 0.5px;
            }

            .hero-description {
                font-size: 13.5px;
                line-height: 1.7;
            }

            .hero-badge {
                font-size: 11.5px;
                padding: 5px 12px;
            }

            .hero-search-form {
                border-radius: 30px;
            }

            .hero-search-btn {
                padding: 10px 14px;
                font-size: 12px;
                border-radius: 0 30px 30px 0;
            }

            .hero-search-input {
                padding: 10px 8px;
                font-size: 12.5px;
            }

            .hero-quick-tags {
                gap: 4px;
            }

            .hero-tag {
                padding: 4px 10px;
                font-size: 11px;
            }

            .hero-quick-tags-label {
                font-size: 11px;
                width: 100%;
                text-align: center;
            }

            .hero-stats {
                gap: 14px;
                flex-wrap: wrap;
            }

            .hero-stat-number {
                font-size: 19px;
            }

            .hero-stat-divider {
                display: none;
            }

            .comparison-card {
                padding: 20px 16px;
            }

            .comparison-card-title {
                font-size: 16px;
            }

            .comparison-item-text {
                font-size: 13px;
            }
        }