/* roulang page: index */
:root {
            --bg-primary: #0D1117;
            --bg-secondary: #161B22;
            --bg-card: #1C2128;
            --text-title: #F0F6FC;
            --text-body: #8B949E;
            --text-muted: #6E7681;
            --gold-light: #E5C396;
            --gold-base: #C5A880;
            --gold-dark: #9E835E;
            --gold-glow: rgba(197, 168, 128, 0.25);
            --jade: #1B4D3E;
            --crimson: #8B0000;
            --border-color: rgba(197, 168, 128, 0.18);
            --border-hover: rgba(229, 195, 150, 0.45);
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.4);
            --shadow-card: 0 10px 30px rgba(0, 0, 0, 0.55);
            --shadow-gold: 0 0 25px rgba(197, 168, 128, 0.2);
            --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-stack);
            background-color: var(--bg-primary);
            color: var(--text-body);
            line-height: 1.8;
            letter-spacing: 0.02em;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航与功能条 */
        .top-bar {
            background-color: #07090D;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 0.8125rem;
            color: var(--text-muted);
            padding: 7px 0;
        }
        .top-bar-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .top-info span {
            margin-right: 20px;
        }
        .top-info span:last-child {
            margin-right: 0;
        }
        .top-bar a:hover {
            color: var(--gold-light);
        }

        header.site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(13, 17, 23, 0.88);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-color);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 74px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-title);
            letter-spacing: 0.05em;
        }
        .logo-emblem {
            width: 36px;
            height: 36px;
            border: 1.5px solid var(--gold-base);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, rgba(197, 168, 128, 0.15), rgba(27, 77, 62, 0.25));
            color: var(--gold-light);
            font-size: 1.1rem;
            font-weight: bold;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .main-nav a {
            font-size: 0.9375rem;
            color: var(--text-title);
            font-weight: 500;
            position: relative;
            padding: 8px 0;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--gold-light);
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--gold-base);
            transition: var(--transition);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }

        .btn-gold {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            background: linear-gradient(135deg, var(--gold-base), var(--gold-dark));
            color: #0D1117;
            font-size: 0.9375rem;
            font-weight: 700;
            border-radius: var(--radius-sm);
            box-shadow: 0 4px 15px rgba(197, 168, 128, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.2);
            cursor: pointer;
            transition: var(--transition);
            white-space: nowrap;
        }
        .btn-gold:hover {
            background: linear-gradient(135deg, var(--gold-light), var(--gold-base));
            box-shadow: 0 6px 20px rgba(197, 168, 128, 0.4);
            transform: translateY(-2px);
            color: #05070A;
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            background: transparent;
            color: var(--gold-light);
            font-size: 0.9375rem;
            font-weight: 600;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-color);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline:hover {
            border-color: var(--gold-base);
            background: rgba(197, 168, 128, 0.08);
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border-color);
            color: var(--text-title);
            font-size: 1.4rem;
            padding: 6px 10px;
            border-radius: var(--radius-sm);
            cursor: pointer;
        }

        /* 基础 Section 排版规范 */
        section {
            padding: 85px 0;
            position: relative;
        }
        .section-alt {
            background-color: var(--bg-secondary);
        }
        .section-header {
            text-align: center;
            max-width: 860px;
            margin: 0 auto 50px auto;
        }
        .section-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.15em;
            color: var(--gold-light);
            background: rgba(197, 168, 128, 0.1);
            padding: 4px 14px;
            border-radius: 50px;
            border: 1px solid var(--border-color);
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 2.15rem;
            font-weight: 700;
            color: var(--text-title);
            margin-bottom: 16px;
            line-height: 1.35;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--text-body);
            line-height: 1.8;
        }

        /* 板块 1：Hero 会员俱乐部黑金感 */
        #hero {
            padding: 110px 0 90px 0;
            background: radial-gradient(circle at 80% 20%, rgba(27, 77, 62, 0.25) 0%, rgba(13, 17, 23, 0.95) 70%),
                        url('/assets/images/c823f9df7601d782.jpg') center/cover no-repeat;
            border-bottom: 1px solid var(--border-color);
            position: relative;
        }
        #hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(13, 17, 23, 0.85);
            pointer-events: none;
        }
        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 40px;
            align-items: center;
        }
        .hero-badge-wrap {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 20px;
        }
        .vip-crest {
            background: linear-gradient(135deg, var(--gold-base), var(--crimson));
            color: #FFF;
            font-size: 0.75rem;
            font-weight: 800;
            padding: 3px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.05em;
        }
        h1.hero-h1 {
            font-size: 2.85rem;
            font-weight: 800;
            color: var(--text-title);
            line-height: 1.25;
            margin-bottom: 22px;
            letter-spacing: -0.01em;
        }
        .hero-desc {
            font-size: 1.05rem;
            color: #C0C8D2;
            margin-bottom: 34px;
            line-height: 1.85;
            max-width: 620px;
        }
        .hero-actions {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
        }
        .hero-vip-card {
            background: linear-gradient(145deg, rgba(28, 33, 40, 0.95), rgba(22, 27, 34, 0.95));
            border: 1px solid var(--border-hover);
            border-radius: var(--radius-md);
            padding: 34px;
            box-shadow: var(--shadow-card), 0 0 30px rgba(197, 168, 128, 0.1);
            position: relative;
            overflow: hidden;
        }
        .hero-vip-card::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 120px;
            height: 120px;
            background: radial-gradient(circle, rgba(197, 168, 128, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }
        .vip-card-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding-bottom: 16px;
            margin-bottom: 20px;
        }
        .vip-tier-title {
            color: var(--gold-light);
            font-size: 1.15rem;
            font-weight: 700;
        }
        .vip-status-dot {
            display: inline-flex;
            align-items: center;
            font-size: 0.8125rem;
            color: #48C774;
            gap: 6px;
        }
        .vip-status-dot::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: #48C774;
            border-radius: 50%;
            display: inline-block;
        }
        .vip-spec-list {
            list-style: none;
            margin-bottom: 24px;
        }
        .vip-spec-list li {
            font-size: 0.9rem;
            color: #BAC2CB;
            margin-bottom: 12px;
            display: flex;
            justify-content: space-between;
            border-bottom: 1px dashed rgba(255, 255, 255, 0.05);
            padding-bottom: 6px;
        }
        .vip-spec-list li span:last-child {
            color: var(--gold-light);
            font-weight: 600;
        }

        /* 板块 2：搜索与能力快速检索入口 */
        #search-portal {
            padding: 45px 0;
            background: #0A0D12;
            border-bottom: 1px solid var(--border-color);
        }
        .search-strip {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 16px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }
        .search-keywords {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .search-tag-label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--gold-light);
        }
        .kw-chip {
            font-size: 0.8125rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-body);
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            transition: var(--transition);
        }
        .kw-chip:hover {
            color: var(--gold-light);
            border-color: var(--gold-base);
            background: rgba(197, 168, 128, 0.08);
        }

        /* 板块 3：品牌与体系概览 (ID: overview) */
        .overview-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .overview-text h3 {
            font-size: 1.75rem;
            color: var(--text-title);
            margin-bottom: 20px;
            line-height: 1.4;
        }
        .overview-text p {
            margin-bottom: 18px;
            color: #9DA7B3;
        }
        .standard-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            box-shadow: var(--shadow-card);
        }
        .standard-card h4 {
            color: var(--gold-light);
            font-size: 1.15rem;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .standard-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.875rem;
        }
        .standard-table th, .standard-table td {
            padding: 10px 12px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .standard-table th {
            color: var(--text-muted);
            font-weight: 600;
        }
        .standard-table td {
            color: #C0C8D2;
        }

        /* 板块 4：核心优势看板 (ID: advantages) */
        .grid-6 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .adv-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            transition: var(--transition);
            position: relative;
        }
        .adv-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card), var(--shadow-gold);
        }
        .adv-icon {
            font-size: 1.8rem;
            color: var(--gold-light);
            margin-bottom: 18px;
            display: inline-block;
        }
        .adv-card h3 {
            font-size: 1.25rem;
            color: var(--text-title);
            margin-bottom: 12px;
        }
        .adv-card p {
            font-size: 0.9375rem;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* 板块 5：热门产品与内容矩阵 (ID: services) */
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .service-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow: hidden;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .service-card:hover {
            transform: translateY(-5px);
            border-color: var(--border-hover);
            box-shadow: var(--shadow-card);
        }
        .service-media {
            height: 200px;
            overflow: hidden;
            position: relative;
        }
        .service-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .service-card:hover .service-media img {
            transform: scale(1.05);
        }
        .service-body {
            padding: 28px 24px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        .service-body h3 {
            font-size: 1.25rem;
            color: var(--text-title);
            margin-bottom: 12px;
        }
        .service-body p {
            font-size: 0.9375rem;
            color: var(--text-body);
            margin-bottom: 20px;
            line-height: 1.7;
            flex-grow: 1;
        }
        .service-specs {
            list-style: none;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 16px;
            margin-bottom: 22px;
        }
        .service-specs li {
            font-size: 0.85rem;
            color: #A0ABB7;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .service-specs li::before {
            content: '▪';
            color: var(--gold-base);
        }

        /* 板块 6：深色合规与技术理念区 (ID: compliance) */
        .flow-container {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            position: relative;
        }
        .flow-step {
            background: linear-gradient(180deg, #161B22 0%, #101419 100%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px 22px;
            text-align: center;
            position: relative;
        }
        .step-number {
            width: 44px;
            height: 44px;
            line-height: 44px;
            margin: 0 auto 18px auto;
            border-radius: 50%;
            background: rgba(197, 168, 128, 0.1);
            border: 1.5px solid var(--gold-base);
            color: var(--gold-light);
            font-weight: 700;
            font-size: 1.1rem;
        }
        .flow-step h3 {
            font-size: 1.15rem;
            color: var(--text-title);
            margin-bottom: 12px;
        }
        .flow-step p {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* 板块 7：数据驱动指标看板 (ID: metrics) */
        .metrics-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .metric-box {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            padding: 36px 20px;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-subtle);
        }
        .metric-val {
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--gold-light);
            margin-bottom: 8px;
            line-height: 1.1;
            font-feature-settings: "tnum";
        }
        .metric-label {
            font-size: 0.9375rem;
            color: var(--text-title);
            font-weight: 600;
            margin-bottom: 6px;
        }
        .metric-sub {
            font-size: 0.8125rem;
            color: var(--text-muted);
        }

        /* 板块 8：行业解决方案场景 (ID: solutions) */
        .solution-stream {
            display: flex;
            flex-direction: column;
            gap: 40px;
        }
        .solution-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 36px;
        }
        .solution-row.reverse {
            direction: rtl;
        }
        .solution-row.reverse .solution-text {
            direction: ltr;
        }
        .solution-row.reverse .solution-media {
            direction: ltr;
        }
        .solution-media {
            border-radius: var(--radius-md);
            overflow: hidden;
            height: 280px;
        }
        .solution-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .solution-text h3 {
            font-size: 1.5rem;
            color: var(--text-title);
            margin-bottom: 14px;
        }
        .solution-text p {
            font-size: 0.95rem;
            color: var(--text-body);
            margin-bottom: 18px;
            line-height: 1.8;
        }

        /* 板块 9：全案交付结果对比 (ID: comparison) */
        .comp-table-wrap {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            overflow-x: auto;
            box-shadow: var(--shadow-card);
        }
        .comp-table {
            width: 100%;
            border-collapse: collapse;
            text-align: left;
            min-width: 650px;
        }
        .comp-table th, .comp-table td {
            padding: 18px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            font-size: 0.9375rem;
        }
        .comp-table th {
            background: #12161D;
            color: var(--text-title);
            font-weight: 700;
        }
        .comp-table th.highlight-col {
            background: rgba(197, 168, 128, 0.12);
            color: var(--gold-light);
            border-left: 1px solid var(--border-color);
            border-right: 1px solid var(--border-color);
        }
        .comp-table td.highlight-col {
            background: rgba(197, 168, 128, 0.04);
            color: #E2E8F0;
            font-weight: 500;
            border-left: 1px solid var(--border-color);
            border-right: 1px solid var(--border-color);
        }
        .comp-table td.dim-col {
            color: var(--text-muted);
        }

        /* 板块 10：里程碑与交付路线图 (ID: roadmap) */
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
        }
        .timeline::after {
            content: '';
            position: absolute;
            width: 2px;
            background: var(--border-color);
            top: 0;
            bottom: 0;
            left: 50%;
            margin-left: -1px;
        }
        .timeline-item {
            padding: 10px 40px;
            position: relative;
            width: 50%;
        }
        .timeline-item.left {
            left: 0;
            text-align: right;
        }
        .timeline-item.right {
            left: 50%;
            text-align: left;
        }
        .timeline-item::after {
            content: '';
            position: absolute;
            width: 14px;
            height: 14px;
            right: -7px;
            background-color: var(--gold-base);
            border: 3px solid var(--bg-primary);
            top: 22px;
            border-radius: 50%;
            z-index: 1;
        }
        .timeline-item.right::after {
            left: -7px;
        }
        .timeline-content {
            padding: 20px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
        }
        .timeline-content h3 {
            font-size: 1.15rem;
            color: var(--gold-light);
            margin-bottom: 8px;
        }
        .timeline-content p {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.7;
        }

        /* 板块 11：真实合作案例与反馈 (ID: stories) */
        .story-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 30px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }
        .story-meta {
            margin-bottom: 16px;
        }
        .client-tag {
            display: inline-block;
            font-size: 0.75rem;
            color: var(--gold-light);
            background: rgba(197, 168, 128, 0.1);
            padding: 3px 10px;
            border-radius: 4px;
            margin-bottom: 10px;
        }
        .story-quote {
            font-size: 0.9375rem;
            color: #C8D1DC;
            line-height: 1.75;
            margin-bottom: 20px;
            font-style: italic;
        }
        .story-rating {
            color: var(--gold-light);
            font-size: 0.875rem;
            letter-spacing: 2px;
        }

        /* 板块 12：行业前沿资讯内嵌摘要 (ID: insights) */
        .insight-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 28px;
            display: flex;
            flex-direction: column;
            transition: var(--transition);
        }
        .insight-card:hover {
            border-color: var(--border-hover);
            transform: translateY(-4px);
        }
        .insight-date {
            font-size: 0.8125rem;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .insight-card h3 {
            font-size: 1.15rem;
            color: var(--text-title);
            margin-bottom: 12px;
            line-height: 1.45;
        }
        .insight-card p {
            font-size: 0.875rem;
            color: var(--text-body);
            line-height: 1.75;
            margin-bottom: 18px;
            flex-grow: 1;
        }
        .insight-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .tag-pill {
            font-size: 0.75rem;
            color: var(--gold-dark);
            background: rgba(197, 168, 128, 0.06);
            padding: 3px 8px;
            border-radius: 3px;
        }

        /* 板块 13：专家答疑 FAQ 手风琴 (ID: faq) */
        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
        }
        .faq-toggle {
            width: 100%;
            padding: 20px 24px;
            text-align: left;
            background: none;
            border: none;
            color: var(--text-title);
            font-size: 1.05rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-toggle:hover {
            color: var(--gold-light);
        }
        .faq-icon {
            font-size: 1.25rem;
            transition: transform 0.3s ease;
            color: var(--gold-base);
        }
        .faq-content {
            padding: 0 24px 20px 24px;
            font-size: 0.9375rem;
            color: #A6B1BD;
            line-height: 1.8;
            display: none;
        }
        .faq-item.active .faq-content {
            display: block;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }

        /* 需求表单区 (ID: contact) */
        .contact-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 48px;
        }
        .contact-info h3 {
            font-size: 1.85rem;
            color: var(--text-title);
            margin-bottom: 18px;
        }
        .contact-info p {
            color: #9DA7B3;
            margin-bottom: 24px;
            line-height: 1.8;
        }
        .contact-direct-item {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 0.9375rem;
            color: var(--text-title);
        }
        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }
        .form-group {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .form-group label {
            font-size: 0.875rem;
            font-weight: 600;
            color: var(--text-title);
        }
        .form-control {
            width: 100%;
            padding: 12px 16px;
            background: #12161D;
            border: 1px solid var(--border-color);
            border-radius: var(--radius-sm);
            color: var(--text-title);
            font-size: 0.9375rem;
            transition: var(--transition);
        }
        .form-control:focus {
            outline: none;
            border-color: var(--gold-light);
            box-shadow: 0 0 10px rgba(197, 168, 128, 0.25);
        }
        select.form-control {
            color: #CBD5E1;
        }

        /* 页脚规范 (Footer) */
        footer.site-footer {
            background-color: #07090D;
            border-top: 1px solid var(--border-color);
            padding: 70px 0 30px 0;
            font-size: 0.875rem;
            color: var(--text-muted);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.9fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-col h4 {
            color: var(--text-title);
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 20px;
            letter-spacing: 0.05em;
        }
        .footer-col p {
            line-height: 1.8;
            margin-bottom: 14px;
            color: #8B949E;
        }
        .footer-links {
            list-style: none;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a:hover {
            color: var(--gold-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: 26px;
            text-align: center;
            font-size: 0.8125rem;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .footer-bottom a {
            color: var(--text-muted);
        }
        .footer-bottom a:hover {
            color: var(--gold-light);
        }

        /* 响应式断点控制 */
        @media (max-width: 1024px) {
            .grid-6 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .flow-container {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-inner {
                grid-template-columns: 1fr;
            }
            .overview-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            section {
                padding: 60px 0;
            }
            .nav-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 74px;
                left: 0;
                width: 100%;
                background: #0D1117;
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 16px;
            }
            .main-nav.active {
                display: flex;
            }
            .top-bar {
                display: none;
            }
            h1.hero-h1 {
                font-size: 2.15rem;
            }
            .grid-6, .grid-3, .metrics-strip, .flow-container {
                grid-template-columns: 1fr;
            }
            .solution-row {
                grid-template-columns: 1fr;
                padding: 24px;
            }
            .solution-row.reverse {
                direction: ltr;
            }
            .timeline::after {
                left: 20px;
            }
            .timeline-item {
                width: 100%;
                padding-left: 50px;
                padding-right: 0;
                text-align: left;
            }
            .timeline-item.left {
                left: 0;
                text-align: left;
            }
            .timeline-item.right {
                left: 0;
            }
            .timeline-item::after {
                left: 13px;
                right: auto;
            }
            .timeline-item.right::after {
                left: 13px;
            }
            .contact-wrap {
                grid-template-columns: 1fr;
                padding: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }