/* roulang page: index */
:root {
            --color-primary: #e63946;
            --color-primary-dark: #c1121f;
            --color-primary-light: #ff6b6b;
            --color-secondary: #1d3557;
            --color-accent: #f4a261;
            --color-accent-glow: #ffb347;
            --color-bg: #0a0e17;
            --color-bg-alt: #111827;
            --color-bg-card: #1a1f2e;
            --color-bg-glass: rgba(13, 17, 28, 0.75);
            --color-text: #f1f5f9;
            --color-text-soft: #cbd5e1;
            --color-text-muted: #94a3b8;
            --color-border: rgba(255, 255, 255, 0.08);
            --color-border-light: rgba(255, 255, 255, 0.14);
            --color-success: #10b981;
            --color-live: #ef4444;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
            --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.4);
            --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.55);
            --shadow-glow: 0 0 40px rgba(230, 57, 70, 0.3);
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --nav-height: 68px;
            --section-gap: 80px;
            --section-gap-mobile: 48px;
        }

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

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

        body {
            font-family: var(--font-body);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
            font-size: 16px;
        }

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

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

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

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

        :focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
        }

        .grid-container {
            max-width: 1240px;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-padding {
            padding-top: var(--section-gap);
            padding-bottom: var(--section-gap);
        }

        .section-padding-top {
            padding-top: var(--section-gap);
        }

        .section-padding-bottom {
            padding-bottom: var(--section-gap);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2.5px;
            color: var(--color-primary);
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            display: inline-block;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
            animation: pulse-dot 2s infinite;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.25;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-soft);
            max-width: 620px;
            line-height: 1.7;
        }

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                box-shadow: 0 0 0 0 rgba(230, 57, 70, 0.7);
            }
            50% {
                opacity: 0.5;
                box-shadow: 0 0 0 10px rgba(230, 57, 70, 0);
            }
        }

        /* ========== HEADER / 透明玻璃导航 ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--nav-height);
            display: flex;
            align-items: center;
            background: var(--color-bg-glass);
            backdrop-filter: blur(18px) saturate(140%);
            -webkit-backdrop-filter: blur(18px) saturate(140%);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
            transition: background var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-smooth);
        }

        .site-header.scrolled {
            background: rgba(10, 14, 23, 0.94);
            box-shadow: 0 4px 32px rgba(0, 0, 0, 0.5);
            border-bottom-color: rgba(255, 255, 255, 0.12);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }

        .logo-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            font-weight: 900;
            color: #fff;
            box-shadow: 0 4px 14px rgba(230, 57, 70, 0.35);
        }

        .logo-text {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 800;
            color: #fff;
            letter-spacing: 0.01em;
            white-space: nowrap;
            text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
        }

        .logo-text span {
            color: var(--color-primary-light);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text-soft);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
            letter-spacing: 0.02em;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: #fff;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width var(--transition-smooth);
        }

        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            border-radius: 30px;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
            white-space: nowrap;
            letter-spacing: 0.02em;
        }

        .nav-cta-btn:hover {
            background: var(--color-primary-dark);
            box-shadow: 0 6px 24px rgba(230, 57, 70, 0.5);
            transform: translateY(-1px);
            color: #fff;
        }

        .nav-cta-btn i {
            font-size: 0.8rem;
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.5rem;
            padding: 8px;
            cursor: pointer;
            transition: color var(--transition-fast);
            line-height: 1;
        }

        .nav-toggle:hover {
            color: var(--color-primary-light);
        }

        .mobile-menu-overlay {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.7);
            z-index: 999;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .mobile-menu-overlay.active {
            display: block;
            opacity: 1;
        }

        .mobile-menu-panel {
            position: fixed;
            top: 0;
            right: -320px;
            width: 300px;
            height: 100vh;
            background: var(--color-bg-alt);
            z-index: 1001;
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 20px;
            transition: right var(--transition-smooth);
            box-shadow: -8px 0 32px rgba(0, 0, 0, 0.5);
            border-left: 1px solid var(--color-border);
        }

        .mobile-menu-panel.active {
            right: 0;
        }

        .mobile-menu-panel .close-btn {
            align-self: flex-end;
            background: transparent;
            border: none;
            color: #fff;
            font-size: 1.4rem;
            cursor: pointer;
            padding: 6px;
            transition: color var(--transition-fast);
        }

        .mobile-menu-panel .close-btn:hover {
            color: var(--color-primary-light);
        }

        .mobile-menu-panel a {
            display: block;
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-soft);
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            transition: color var(--transition-fast);
        }

        .mobile-menu-panel a:hover,
        .mobile-menu-panel a.active {
            color: #fff;
        }

        .mobile-menu-panel .mobile-cta {
            margin-top: auto;
            display: block;
            text-align: center;
            padding: 14px 24px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            border-radius: 30px;
            font-size: 1rem;
            box-shadow: 0 4px 16px rgba(230, 57, 70, 0.35);
            transition: all var(--transition-smooth);
        }

        .mobile-menu-panel .mobile-cta:hover {
            background: var(--color-primary-dark);
            color: #fff;
        }

        /* ========== HERO ========== */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--color-bg);
            padding-top: var(--nav-height);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            object-position: center 30%;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg,
                    rgba(10, 14, 23, 0.55) 0%,
                    rgba(10, 14, 23, 0.7) 40%,
                    rgba(10, 14, 23, 0.9) 80%,
                    var(--color-bg) 100%);
            z-index: 1;
        }

        .hero-glow {
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.25) 0%, transparent 70%);
            top: 20%;
            left: 50%;
            transform: translate(-50%, -50%);
            z-index: 1;
            pointer-events: none;
            animation: hero-glow-pulse 4s ease-in-out infinite;
        }

        @keyframes hero-glow-pulse {
            0%,
            100% {
                opacity: 0.6;
                transform: translate(-50%, -50%) scale(1);
            }
            50% {
                opacity: 1;
                transform: translate(-50%, -50%) scale(1.2);
            }
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            padding: 40px 20px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 18px;
            background: rgba(230, 57, 70, 0.2);
            border: 1px solid rgba(230, 57, 70, 0.35);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary-light);
            margin-bottom: 24px;
            letter-spacing: 0.03em;
            animation: badge-shimmer 3s ease-in-out infinite;
        }

        @keyframes badge-shimmer {
            0%,
            100% {
                border-color: rgba(230, 57, 70, 0.35);
            }
            50% {
                border-color: rgba(230, 57, 70, 0.7);
            }
        }

        .hero-badge .live-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-live);
            animation: live-pulse 1.5s infinite;
        }

        @keyframes live-pulse {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.8);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(239, 68, 68, 0);
            }
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: 3.8rem;
            font-weight: 900;
            color: #fff;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            text-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
        }

        .hero-title .highlight {
            color: var(--color-primary);
            position: relative;
        }

        .hero-desc {
            font-size: 1.2rem;
            color: var(--color-text-soft);
            max-width: 560px;
            margin: 0 auto 36px;
            line-height: 1.8;
            text-shadow: 0 1px 6px rgba(0, 0, 0, 0.5);
        }

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

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 32px;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            border-radius: 50px;
            transition: all var(--transition-smooth);
            box-shadow: 0 6px 28px rgba(230, 57, 70, 0.4);
            letter-spacing: 0.02em;
            border: none;
            cursor: pointer;
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 30px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            border-radius: 50px;
            border: 2px solid rgba(255, 255, 255, 0.35);
            transition: all var(--transition-smooth);
            letter-spacing: 0.02em;
            cursor: pointer;
        }

        .btn-secondary:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-scroll-hint {
            position: absolute;
            bottom: 30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            color: var(--color-text-muted);
            font-size: 0.8rem;
            animation: scroll-bounce 2s infinite;
            cursor: pointer;
        }

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

        .hero-scroll-hint i {
            font-size: 1.2rem;
        }

        /* ========== 板块通用 ========== */
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-title {
            margin-bottom: 12px;
        }

        .section-header .section-subtitle {
            margin: 0 auto;
        }

        /* ========== 核心优势板块 ========== */
        .features-section {
            background: var(--color-bg-alt);
            position: relative;
        }

        .feature-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            text-align: center;
            transition: all var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 16px;
        }

        .feature-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }

        .feature-icon-wrap {
            width: 64px;
            height: 64px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            flex-shrink: 0;
        }

        .feature-icon-wrap.red {
            background: rgba(230, 57, 70, 0.15);
            color: var(--color-primary-light);
        }
        .feature-icon-wrap.blue {
            background: rgba(59, 130, 246, 0.15);
            color: #60a5fa;
        }
        .feature-icon-wrap.green {
            background: rgba(16, 185, 129, 0.15);
            color: #34d399;
        }
        .feature-icon-wrap.amber {
            background: rgba(244, 162, 97, 0.15);
            color: var(--color-accent-glow);
        }

        .feature-card h4 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
        }

        .feature-card p {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.7;
        }

        /* ========== 赛事直播板块 ========== */
        .matches-section {
            background: var(--color-bg);
            position: relative;
        }

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

        .match-card:hover {
            border-color: var(--color-border-light);
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

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

        .match-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-smooth);
        }

        .match-card:hover .match-card-img img {
            transform: scale(1.06);
        }

        .match-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            z-index: 2;
        }

        .match-card-badge.live {
            background: var(--color-live);
            color: #fff;
            animation: live-pulse-badge 2s infinite;
        }

        @keyframes live-pulse-badge {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.6);
            }
            50% {
                box-shadow: 0 0 0 8px rgba(239, 68, 68, 0);
            }
        }

        .match-card-badge.upcoming {
            background: rgba(244, 162, 97, 0.85);
            color: #1a1a1a;
        }

        .match-card-badge.ended {
            background: rgba(148, 163, 184, 0.7);
            color: #fff;
        }

        .match-card-body {
            padding: 20px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .match-card-body h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
            margin: 0;
            line-height: 1.4;
        }

        .match-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
        }

        .match-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .match-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary-light);
            margin-top: auto;
            transition: color var(--transition-fast);
        }

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

        /* ========== 数据统计板块 ========== */
        .stats-section {
            background: linear-gradient(180deg, var(--color-bg-alt) 0%, var(--color-bg) 100%);
            position: relative;
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 300px;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--color-primary-light), transparent);
            opacity: 0.5;
        }

        .stat-item {
            text-align: center;
            padding: 20px 16px;
        }

        .stat-number {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 900;
            color: #fff;
            line-height: 1;
            margin-bottom: 8px;
            letter-spacing: -0.02em;
        }

        .stat-number .plus {
            color: var(--color-primary);
        }

        .stat-label {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* ========== 观看步骤板块 ========== */
        .steps-section {
            background: var(--color-bg);
            position: relative;
        }

        .step-card {
            text-align: center;
            padding: 28px 20px;
            position: relative;
        }

        .step-number {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 900;
            font-size: 1.3rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            box-shadow: 0 4px 18px rgba(230, 57, 70, 0.35);
            position: relative;
            z-index: 2;
        }

        .step-card h4 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .step-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin: 0;
        }

        .step-connector {
            display: none;
        }

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

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

        .faq-item {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--color-border-light);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: transparent;
            border: none;
            color: #fff;
            font-weight: 700;
            font-size: 1.05rem;
            text-align: left;
            cursor: pointer;
            transition: background var(--transition-fast);
            gap: 12px;
            font-family: var(--font-heading);
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.03);
        }

        .faq-question i {
            flex-shrink: 0;
            transition: transform var(--transition-smooth);
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary-light);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-smooth), padding var(--transition-smooth);
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }

        .faq-answer p {
            font-size: 0.95rem;
            color: var(--color-text-soft);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== CTA板块 ========== */
        .cta-section {
            background: var(--color-bg);
            position: relative;
            text-align: center;
        }

        .cta-card {
            background: linear-gradient(135deg, var(--color-secondary) 0%, #1a2744 100%);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-xl);
            padding: 52px 36px;
            position: relative;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(230, 57, 70, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(244, 162, 97, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .cta-card h3 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .cta-card p {
            font-size: 1.05rem;
            color: var(--color-text-soft);
            margin-bottom: 28px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background: var(--color-bg-alt);
            border-top: 1px solid var(--color-border);
            padding: 40px 0 28px;
            text-align: center;
        }

        .footer-logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

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

        .footer-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 20px;
            line-height: 1.6;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .footer-links {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 20px;
            list-style: none;
            padding: 0;
        }

        .footer-links a {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            transition: color var(--transition-fast);
            font-weight: 500;
        }

        .footer-links a:hover {
            color: var(--color-primary-light);
        }

        .footer-copy {
            font-size: 0.82rem;
            color: var(--color-text-muted);
            opacity: 0.7;
            line-height: 1.6;
        }

        /* ========== 响应式 ========== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.8rem;
            }
            .section-title {
                font-size: 2rem;
            }
            .stat-number {
                font-size: 2.4rem;
            }
            .cta-card {
                padding: 40px 24px;
            }
            .cta-card h3 {
                font-size: 1.7rem;
            }
            .nav-links {
                gap: 20px;
            }
            .logo-text {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-gap: 48px;
                --nav-height: 58px;
            }
            .nav-links {
                display: none;
            }
            .nav-cta-btn {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-desc {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 12px;
            }
            .btn-primary,
            .btn-secondary {
                width: 100%;
                justify-content: center;
                padding: 14px 24px;
                font-size: 0.95rem;
            }
            .feature-card {
                padding: 24px 18px;
            }
            .match-card-body {
                padding: 16px 14px;
            }
            .stat-item {
                padding: 14px 8px;
            }
            .stat-number {
                font-size: 2rem;
            }
            .cta-card {
                padding: 32px 18px;
                border-radius: var(--radius-lg);
            }
            .cta-card h3 {
                font-size: 1.5rem;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.open .faq-answer {
                padding: 0 16px 14px;
            }
            .grid-container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .section-header {
                margin-bottom: 32px;
            }
            .logo-text {
                font-size: 1rem;
            }
            .site-footer {
                padding: 28px 0 20px;
            }
            .hero-scroll-hint {
                bottom: 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.75rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .section-title {
                font-size: 1.45rem;
            }
            .section-subtitle {
                font-size: 0.85rem;
            }
            .stat-number {
                font-size: 1.7rem;
            }
            .feature-card h4 {
                font-size: 1.05rem;
            }
            .match-card-body h4 {
                font-size: 0.95rem;
            }
            .cta-card h3 {
                font-size: 1.3rem;
            }
            .cta-card p {
                font-size: 0.9rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 6px 14px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .logo-text {
                font-size: 0.9rem;
            }
        }