/* roulang page: index */
:root {
            --racer-cyan: #0AB5A7;
            --racer-cyan-light: #0DC9BA;
            --racer-cyan-dark: #089B8F;
            --ink-black: #1E1E2C;
            --ink-dark: #141420;
            --sport-orange: #FF6F3C;
            --sport-orange-dark: #E85D2C;
            --sport-orange-light: #FF8A5F;
            --bg-light: #F9FAFC;
            --bg-card: rgba(255, 255, 255, 0.72);
            --text-primary: #1E1E2C;
            --text-secondary: #4A4A5E;
            --text-muted: #7A7A90;
            --border-light: #E8ECF1;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 2px 20px rgba(0, 0, 0, 0.08);
            --radius-card: 16px;
            --radius-btn: 32px;
            --radius-input: 8px;
            --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-bounce: 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
        }

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

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 80px;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-primary);
            background-color: var(--bg-light);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-smooth);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
            border: none;
        }
        input:focus-visible,
        textarea:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--sport-orange);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* 导航 */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(249, 250, 252, 0.78);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(200, 208, 218, 0.35);
            transition: all var(--transition-smooth);
            height: 68px;
        }
        .site-header.scrolled {
            background: rgba(249, 250, 252, 0.92);
            box-shadow: var(--shadow-nav);
            height: 60px;
        }
        .header-inner {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-weight: 700;
            font-size: 22px;
            color: var(--ink-black);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            flex-shrink: 0;
        }
        .nav-menu {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-menu li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 24px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .nav-menu li a::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%) scaleX(0);
            width: 60%;
            height: 2.5px;
            background: var(--racer-cyan);
            border-radius: 2px;
            transition: transform var(--transition-smooth);
        }
        .nav-menu li a:hover,
        .nav-menu li a.active {
            color: var(--racer-cyan-dark);
            background: rgba(10, 181, 167, 0.06);
        }
        .nav-menu li a:hover::after,
        .nav-menu li a.active::after {
            transform: translateX(-50%) scaleX(1);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-icon-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: rgba(200, 208, 218, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            font-size: 15px;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .nav-icon-btn:hover {
            background: rgba(10, 181, 167, 0.14);
            color: var(--racer-cyan-dark);
        }
        .hamburger-btn {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(200, 208, 218, 0.25);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            cursor: pointer;
            border: none;
            z-index: 1001;
            transition: all var(--transition-smooth);
        }
        .hamburger-btn span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--ink-black);
            border-radius: 2px;
            transition: all var(--transition-smooth);
        }
        .hamburger-btn.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger-btn.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger-btn.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-nav-overlay {
            position: fixed;
            inset: 0;
            background: var(--ink-dark);
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 28px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }
        .mobile-nav-overlay.open {
            opacity: 1;
            pointer-events: auto;
        }
        .mobile-nav-overlay a {
            font-size: 22px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 1px;
            transition: all var(--transition-smooth);
            padding: 10px 24px;
            border-radius: 28px;
        }
        .mobile-nav-overlay a:hover {
            color: var(--sport-orange-light);
            background: rgba(255, 255, 255, 0.06);
        }

        /* 容器 */
        .container-main {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
        }
        .section-padding {
            padding: 100px 0;
        }
        @media(max-width:768px) {
            .section-padding {
                padding: 64px 0;
            }
        }

        /* Hero */
        #hero {
            min-height: 100vh;
            padding-top: 100px;
            padding-bottom: 60px;
            position: relative;
            display: flex;
            align-items: center;
            background: linear-gradient(160deg, #f0f6f5 0%, #e8f4f3 25%, #f9fafc 55%, #fefefe 100%);
            overflow: hidden;
        }
        #hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .hero-left {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .hero-eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(10, 181, 167, 0.1);
            color: var(--racer-cyan-dark);
            font-weight: 600;
            font-size: 14px;
            padding: 6px 16px;
            border-radius: 24px;
            letter-spacing: 0.6px;
            width: fit-content;
        }
        .hero-eyebrow .pulse-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--racer-cyan);
            animation: pulse-dot 1.8s ease-in-out infinite;
        }
        @keyframes pulse-dot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(10, 181, 167, 0.5);
            }
            50% {
                box-shadow: 0 0 0 12px rgba(10, 181, 167, 0);
            }
        }
        .hero-h1 {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 48px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--ink-black);
            margin: 0;
            letter-spacing: 0.3px;
        }
        .hero-subtitle {
            font-size: 18px;
            line-height: 1.7;
            color: var(--text-secondary);
            margin: 0;
            max-width: 480px;
        }
        .hero-subtitle-secondary {
            font-size: 15px;
            color: var(--text-muted);
            margin: 0;
            max-width: 440px;
        }
        .hero-metrics-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-metric-card {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            text-align: center;
            min-width: 100px;
            flex: 1;
            transition: all var(--transition-smooth);
            border: 1px solid rgba(200, 208, 218, 0.3);
        }
        .hero-metric-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .hero-metric-value {
            font-size: 30px;
            font-weight: 700;
            color: var(--racer-cyan-dark);
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'PingFang SC', 'Menlo', monospace;
            letter-spacing: -0.5px;
        }
        .hero-metric-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: 4px;
            letter-spacing: 0.3px;
        }
        .hero-right {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        .ring-chart-wrap {
            position: relative;
            width: 160px;
            height: 160px;
            flex-shrink: 0;
        }
        .ring-chart-wrap svg {
            width: 100%;
            height: 100%;
            transform: rotate(-90deg);
        }
        .ring-center-text {
            position: absolute;
            inset: 0;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--ink-black);
            font-size: 15px;
            text-align: center;
            line-height: 1.3;
        }
        .ring-center-text .ring-val {
            font-size: 28px;
            color: var(--racer-cyan-dark);
            font-variant-numeric: tabular-nums;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--sport-orange);
            color: #fff;
            font-weight: 600;
            font-size: 16px;
            padding: 14px 32px;
            border-radius: var(--radius-btn);
            transition: all var(--transition-bounce);
            box-shadow: 0 6px 20px rgba(255, 111, 60, 0.3);
            letter-spacing: 0.4px;
            white-space: nowrap;
        }
        .btn-primary:hover {
            background: var(--sport-orange-dark);
            transform: scale(1.03);
            box-shadow: 0 10px 28px rgba(255, 111, 60, 0.42);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            border: 2px solid var(--racer-cyan);
            color: var(--racer-cyan-dark);
            font-weight: 600;
            font-size: 15px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            background: transparent;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }
        .btn-outline:hover {
            background: rgba(10, 181, 167, 0.08);
            border-color: var(--racer-cyan-dark);
        }
        .hero-scroll-hint {
            position: absolute;
            bottom: 28px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            animation: bounce-down 2s ease-in-out infinite;
            color: var(--text-muted);
            font-size: 22px;
            cursor: pointer;
        }
        @keyframes bounce-down {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
            }
            50% {
                transform: translateX(-50%) translateY(10px);
            }
        }

        /* 指标看板 */
        #performance {
            background: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1.5px;
            text-transform: uppercase;
            color: var(--racer-cyan-dark);
            margin-bottom: 8px;
        }
        .section-title {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 36px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--ink-black);
            margin: 0 0 12px;
            letter-spacing: 0.2px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 0 40px;
            line-height: 1.7;
        }
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: #fff;
            border-radius: var(--radius-card);
            padding: 28px 24px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-light);
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .metric-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--racer-cyan);
            transform: scaleX(0);
            transition: transform var(--transition-smooth);
            border-radius: 0 0 16px 16px;
        }
        .metric-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
        }
        .metric-card:hover::after {
            transform: scaleX(1);
        }
        .metric-icon {
            font-size: 32px;
            color: var(--racer-cyan);
            margin-bottom: 12px;
        }
        .metric-number {
            font-size: 42px;
            font-weight: 700;
            color: var(--ink-black);
            font-variant-numeric: tabular-nums;
            font-family: 'SF Mono', 'PingFang SC', 'Menlo', monospace;
            letter-spacing: -1px;
            line-height: 1;
        }
        .metric-number .suffix {
            font-size: 22px;
            color: var(--racer-cyan-dark);
        }
        .metric-label-text {
            font-size: 14px;
            color: var(--text-muted);
            margin-top: 6px;
            letter-spacing: 0.2px;
        }

        /* 服务矩阵 */
        #solutions {
            background: var(--bg-light);
            position: relative;
        }
        #solutions::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(10, 181, 167, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .solutions-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .solution-card {
            background: rgba(255, 255, 255, 0.68);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-card);
            padding: 32px 28px;
            box-shadow: var(--shadow-card);
            border: 1px solid rgba(200, 208, 218, 0.25);
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .solution-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(10, 181, 167, 0.25);
        }
        .solution-card .card-img-top {
            width: 100%;
            height: 130px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 16px;
        }
        .solution-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(10, 181, 167, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            font-size: 22px;
            color: var(--racer-cyan-dark);
        }
        .solution-card h3 {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 20px;
            font-weight: 600;
            color: var(--ink-black);
            margin: 0 0 8px;
            letter-spacing: 0.2px;
        }
        .solution-card p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0 0 12px;
            line-height: 1.65;
        }
        .solution-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }
        .solution-card ul li {
            font-size: 12px;
            background: rgba(10, 181, 167, 0.07);
            color: var(--racer-cyan-dark);
            padding: 4px 10px;
            border-radius: 14px;
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

        /* 对比区 */
        #compare {
            background: #fff;
        }
        .compare-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: stretch;
        }
        .compare-col {
            border-radius: var(--radius-card);
            padding: 36px 30px;
            transition: all var(--transition-smooth);
        }
        .compare-col.traditional {
            background: #f5f5f8;
            border: 1px solid #e0e0e6;
        }
        .compare-col.wiki {
            background: linear-gradient(135deg, rgba(10, 181, 167, 0.06) 0%, rgba(10, 181, 167, 0.01) 100%);
            border: 1px solid rgba(10, 181, 167, 0.25);
            box-shadow: var(--shadow-card);
        }
        .compare-col h3 {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 22px;
            font-weight: 700;
            margin: 0 0 20px;
            letter-spacing: 0.2px;
        }
        .compare-col.traditional h3 {
            color: #888;
        }
        .compare-col.wiki h3 {
            color: var(--racer-cyan-dark);
        }
        .compare-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 12px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            gap: 12px;
        }
        .compare-row .dim-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-primary);
            flex-shrink: 0;
            min-width: 80px;
        }
        .compare-bar-wrap {
            flex: 1;
            height: 8px;
            background: #e8ecf1;
            border-radius: 4px;
            overflow: hidden;
        }
        .compare-bar-fill {
            height: 100%;
            border-radius: 4px;
            transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .compare-col.traditional .compare-bar-fill {
            background: #c0c4cc;
        }
        .compare-col.wiki .compare-bar-fill {
            background: var(--racer-cyan);
        }
        .compare-val {
            font-weight: 700;
            font-size: 13px;
            flex-shrink: 0;
            min-width: 44px;
            text-align: right;
        }
        .compare-col.traditional .compare-val {
            color: #999;
        }
        .compare-col.wiki .compare-val {
            color: var(--racer-cyan-dark);
        }

        /* FAQ */
        #faq {
            background: var(--bg-light);
        }
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-card);
            border: 1px solid var(--border-light);
            overflow: hidden;
            transition: all var(--transition-smooth);
            cursor: pointer;
        }
        .faq-item.open {
            border-color: rgba(10, 181, 167, 0.3);
            box-shadow: 0 6px 22px rgba(10, 181, 167, 0.1);
            background: rgba(10, 181, 167, 0.02);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            font-weight: 600;
            font-size: 16px;
            color: var(--ink-black);
            letter-spacing: 0.2px;
            user-select: none;
            gap: 12px;
        }
        .faq-toggle {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(200, 208, 218, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
            transition: all var(--transition-smooth);
            color: var(--text-muted);
        }
        .faq-item.open .faq-toggle {
            background: var(--racer-cyan);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 200px;
            padding: 0 24px 20px;
        }

        /* CTA */
        #contact {
            background: var(--ink-dark);
            position: relative;
            overflow: hidden;
        }
        #contact::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            pointer-events: none;
        }
        .cta-grid {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .cta-left h2 {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 12px;
            letter-spacing: 0.3px;
            line-height: 1.35;
        }
        .cta-left p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            line-height: 1.7;
            margin: 0 0 20px;
        }
        .cta-trust-badges {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-trust-badge {
            background: rgba(255, 255, 255, 0.08);
            border-radius: 24px;
            padding: 8px 16px;
            color: rgba(255, 255, 255, 0.8);
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .cta-right {
            background: rgba(255, 255, 255, 0.06);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: var(--radius-card);
            padding: 36px 32px;
            border: 1px solid rgba(255, 255, 255, 0.12);
        }
        .form-group {
            margin-bottom: 16px;
            position: relative;
        }
        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 6px;
            letter-spacing: 0.3px;
            transition: all var(--transition-smooth);
        }
        .form-group input,
        .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: var(--radius-input);
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.18);
            color: #fff;
            font-size: 15px;
            transition: all var(--transition-smooth);
        }
        .form-group input:focus,
        .form-group textarea:focus {
            border-color: var(--sport-orange);
            background: rgba(255, 255, 255, 0.16);
            box-shadow: 0 0 0 3px rgba(255, 111, 60, 0.2);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 80px;
        }
        .btn-submit {
            width: 100%;
            padding: 14px;
            background: var(--sport-orange);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            border-radius: var(--radius-btn);
            letter-spacing: 0.5px;
            transition: all var(--transition-bounce);
            box-shadow: 0 8px 24px rgba(255, 111, 60, 0.35);
            cursor: pointer;
        }
        .btn-submit:hover {
            background: var(--sport-orange-dark);
            transform: scale(1.02);
            box-shadow: 0 12px 32px rgba(255, 111, 60, 0.5);
        }

        /* 页脚 */
        .site-footer {
            background: var(--ink-dark);
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding: 48px 0 28px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
        }
        .footer-brand .logo-link {
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand p {
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.6;
            margin: 0;
        }
        .footer-col h4 {
            color: rgba(255, 255, 255, 0.8);
            font-weight: 700;
            font-size: 15px;
            margin: 0 0 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.5);
            transition: color var(--transition-smooth);
            font-size: 14px;
        }
        .footer-col ul li a:hover {
            color: var(--sport-orange-light);
        }
        .footer-social {
            display: flex;
            gap: 10px;
            margin-top: 8px;
        }
        .footer-social a {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: rgba(255, 255, 255, 0.5);
            font-size: 15px;
            transition: all var(--transition-smooth);
        }
        .footer-social a:hover {
            background: var(--sport-orange);
            color: #fff;
        }
        .footer-bottom {
            margin-top: 36px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            text-align: center;
            color: rgba(255, 255, 255, 0.4);
            font-size: 13px;
        }

        /* 响应式 */
        @media(max-width:1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-right {
                justify-content: center;
            }
            .hero-h1 {
                font-size: 36px;
                line-height: 1.3;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .solutions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .compare-wrapper {
                grid-template-columns: 1fr;
            }
            .cta-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .section-title {
                font-size: 28px;
            }
        }
        @media(max-width:768px) {
            .nav-menu {
                display: none;
            }
            .hamburger-btn {
                display: flex;
            }
            .nav-actions .nav-icon-btn:first-child {
                display: none;
            }
            #hero {
                padding-top: 80px;
                min-height: auto;
                padding-bottom: 40px;
            }
            .hero-h1 {
                font-size: 28px;
                line-height: 1.35;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-metrics-row {
                gap: 8px;
            }
            .hero-metric-card {
                padding: 12px 14px;
                min-width: 70px;
            }
            .hero-metric-value {
                font-size: 22px;
            }
            .ring-chart-wrap {
                width: 120px;
                height: 120px;
            }
            .ring-center-text .ring-val {
                font-size: 22px;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .metric-number {
                font-size: 30px;
            }
            .solutions-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section-title {
                font-size: 24px;
                line-height: 1.4;
            }
            .section-padding {
                padding: 48px 0;
            }
            .container-main {
                padding: 0 16px;
            }
            .btn-primary {
                padding: 12px 22px;
                font-size: 14px;
            }
            .cta-left h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .compare-col {
                padding: 24px 18px;
            }
            .solution-card {
                padding: 22px 18px;
            }
            .hero-scroll-hint {
                bottom: 12px;
                font-size: 18px;
            }
        }
        @media(max-width:520px) {
            .hero-metrics-row {
                flex-direction: column;
                gap: 8px;
            }
            .hero-metric-card {
                display: flex;
                align-items: center;
                justify-content: space-between;
                text-align: left;
                padding: 12px 16px;
            }
            .hero-metric-label {
                margin-top: 0;
                font-size: 13px;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .hero-right {
                gap: 16px;
            }
            .ring-chart-wrap {
                width: 100px;
                height: 100px;
            }
        }
        .fade-in-section {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.7s ease, transform 0.7s ease;
        }
        .fade-in-section.visible {
            opacity: 1;
            transform: translateY(0);
        }