/* roulang page: index */
:root {
            --bg-canvas: #090c10;
            --bg-subtle: #0d1117;
            --bg-card: #161b22;
            --bg-card-hover: #1c2128;
            --border-line: rgba(255, 255, 255, 0.1);
            --border-active: rgba(0, 220, 130, 0.4);
            --text-heading: #f0f6fc;
            --text-body: #c9d1d9;
            --text-muted: #8b949e;
            --accent-emerald: #00dc82;
            --accent-cyan: #0ea5e9;
            --accent-amber: #f59e0b;
            --font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;
            --container-width: 1240px;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            background-color: var(--bg-canvas);
            color: var(--text-body);
        }

        body {
            font-family: var(--font-sans);
            line-height: 1.7;
            background-color: var(--bg-canvas);
            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: var(--container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* 顶部导航体系 */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(9, 12, 16, 0.85);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-line);
        }

        .top-status-bar {
            background-color: #040608;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            font-size: 12px;
            padding: 6px 0;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        .status-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .status-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .status-dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background-color: var(--accent-emerald);
            box-shadow: 0 0 8px var(--accent-emerald);
        }

        .header-main {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.01em;
        }

        .brand-icon {
            width: 32px;
            height: 32px;
            border-radius: var(--radius-sm);
            background: linear-gradient(135deg, var(--accent-emerald), var(--accent-cyan));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #000;
            font-weight: 900;
            font-size: 14px;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-body);
            position: relative;
        }

        .nav-link:hover, .nav-link.active {
            color: var(--accent-emerald);
        }

        .header-action .btn-terminal {
            font-family: var(--font-mono);
            font-size: 13px;
            padding: 8px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--accent-emerald);
            color: var(--accent-emerald);
            background: transparent;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition);
        }

        .header-action .btn-terminal:hover {
            background: rgba(0, 220, 130, 0.1);
            box-shadow: 0 0 15px rgba(0, 220, 130, 0.2);
        }

        /* 移动端汉堡按钮 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-heading);
            font-size: 20px;
            cursor: pointer;
        }

        /* Section 通用规范 */
        .page-section {
            padding: 88px 0;
            position: relative;
            border-bottom: 1px solid var(--border-line);
        }

        .section-subtle {
            background-color: var(--bg-subtle);
        }

        .section-header {
            margin-bottom: 48px;
        }

        .section-tag {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--accent-emerald);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            display: inline-block;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2.1rem;
            font-weight: 700;
            color: var(--text-heading);
            letter-spacing: -0.02em;
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 680px;
            line-height: 1.75;
        }

        /* 板块 1: Hero 无大图图标矩阵版式 */
        .hero-section {
            padding: 96px 0 72px;
            background: radial-gradient(circle at 80% 20%, rgba(14, 165, 233, 0.08) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(0, 220, 130, 0.05) 0%, transparent 40%),
                        var(--bg-canvas);
        }

        .hero-status-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-line);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-family: var(--font-mono);
            color: var(--accent-emerald);
            margin-bottom: 24px;
        }

        .hero-title {
            font-size: 3.2rem;
            line-height: 1.15;
            font-weight: 800;
            color: var(--text-heading);
            margin-bottom: 24px;
            letter-spacing: -0.03em;
        }

        .hero-title span {
            color: var(--accent-emerald);
        }

        .hero-description {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-body);
            max-width: 820px;
            margin-bottom: 40px;
        }

        .hero-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 56px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background-color: var(--accent-emerald);
            color: #000;
            font-weight: 600;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition);
        }

        .btn-primary:hover {
            background-color: #05f08f;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 220, 130, 0.25);
        }

        .btn-outline {
            border: 1px solid var(--border-line);
            background: rgba(255, 255, 255, 0.03);
            color: var(--text-heading);
            font-weight: 500;
            padding: 13px 26px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            transition: var(--transition);
        }

        .btn-outline:hover {
            border-color: rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.07);
        }

        /* Hero 底部的图标矩阵网格 */
        .hero-protocol-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            padding-top: 32px;
            border-top: 1px solid var(--border-line);
        }

        .protocol-badge {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            padding: 16px;
            border-radius: var(--radius-md);
            display: flex;
            flex-direction: column;
            gap: 6px;
            transition: var(--transition);
        }

        .protocol-badge:hover {
            border-color: var(--border-active);
            transform: translateY(-3px);
        }

        .protocol-code {
            font-family: var(--font-mono);
            font-size: 13px;
            font-weight: 700;
            color: var(--text-heading);
        }

        .protocol-note {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* 佣金与收益亮点 (变体结构) */
        .tier-commission-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .commission-box {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 32px;
            position: relative;
            overflow: hidden;
            transition: var(--transition);
        }

        .commission-box:hover {
            border-color: var(--accent-emerald);
        }

        .commission-box.featured {
            border-color: var(--accent-emerald);
            background: linear-gradient(180deg, rgba(0, 220, 130, 0.06) 0%, var(--bg-card) 60%);
        }

        .commission-num {
            font-family: var(--font-mono);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-emerald);
            line-height: 1;
            margin-bottom: 12px;
        }

        .commission-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 12px;
        }

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

        /* 推广物料与套件交付 */
        .materials-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }

        .materials-image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-line);
            background: var(--bg-card);
        }

        .materials-image-wrap img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            filter: grayscale(15%) contrast(105%);
            transition: var(--transition);
        }

        .materials-image-wrap:hover img {
            filter: grayscale(0%);
            transform: scale(1.02);
        }

        .materials-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .material-item {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            display: flex;
            align-items: flex-start;
            gap: 18px;
            transition: var(--transition);
        }

        .material-item:hover {
            border-color: rgba(255, 255, 255, 0.25);
            transform: translateX(4px);
        }

        .item-mono-tag {
            font-family: var(--font-mono);
            font-size: 13px;
            color: var(--accent-cyan);
            background: rgba(14, 165, 233, 0.1);
            padding: 4px 8px;
            border-radius: var(--radius-sm);
        }

        /* 结算说明与清算流程 */
        .settlement-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .settlement-step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 24px;
            position: relative;
        }

        .step-index {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--accent-emerald);
            border-bottom: 1px solid var(--border-line);
            padding-bottom: 8px;
            margin-bottom: 14px;
            display: flex;
            justify-content: space-between;
        }

        .step-card-title {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .step-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 核心能力矩阵 */
        .capabilities-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .capability-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition);
        }

        .capability-card:hover {
            border-color: var(--accent-emerald);
            transform: translateY(-4px);
        }

        .cap-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 16px;
        }

        .cap-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--text-heading);
        }

        .cap-meta {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--accent-emerald);
        }

        .cap-body {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* 误区澄清板块 */
        .misconception-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .misconception-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 24px;
        }

        .mis-label {
            font-size: 12px;
            font-family: var(--font-mono);
            color: #ef4444;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-bottom: 8px;
        }

        .mis-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 10px;
        }

        .mis-correct {
            border-top: 1px dashed var(--border-line);
            margin-top: 12px;
            padding-top: 12px;
            font-size: 13.5px;
            color: var(--accent-emerald);
            line-height: 1.6;
        }

        /* 卖点三连 */
        .triple-pitch {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pitch-card {
            background: linear-gradient(145deg, #161b22, #0d1117);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            text-align: left;
            position: relative;
        }

        .pitch-metric {
            font-family: var(--font-mono);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-heading);
            margin-bottom: 8px;
        }

        .pitch-title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--accent-emerald);
            margin-bottom: 10px;
        }

        .pitch-desc {
            font-size: 13.5px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* 成功案例证明 */
        .case-study-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .case-item {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .case-thumb {
            height: 220px;
            width: 100%;
            overflow: hidden;
            position: relative;
        }

        .case-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .case-item:hover .case-thumb img {
            transform: scale(1.04);
        }

        .case-content {
            padding: 28px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .case-header {
            margin-bottom: 12px;
        }

        .case-type {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--accent-cyan);
            margin-bottom: 6px;
        }

        .case-title {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.4;
        }

        .case-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .case-stats-row {
            display: flex;
            gap: 24px;
            border-top: 1px solid var(--border-line);
            padding-top: 16px;
            font-family: var(--font-mono);
            font-size: 13px;
        }

        .case-stats-row span strong {
            color: var(--accent-emerald);
            display: block;
            font-size: 16px;
        }

        /* 资讯与工程日志 */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .news-card {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            transition: var(--transition);
        }

        .news-card:hover {
            border-color: rgba(255, 255, 255, 0.3);
            transform: translateY(-3px);
        }

        .news-date {
            font-family: var(--font-mono);
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .news-heading {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-heading);
            line-height: 1.45;
            margin-bottom: 12px;
        }

        .news-excerpt {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .news-link {
            font-size: 13px;
            color: var(--accent-emerald);
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        /* 口碑气泡墙 */
        .quotes-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .quote-bubble {
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 28px;
            position: relative;
        }

        .bubble-text {
            font-size: 14px;
            color: var(--text-body);
            line-height: 1.7;
            margin-bottom: 20px;
            position: relative;
        }

        .bubble-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .bubble-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #21262d;
            border: 1px solid var(--border-line);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--accent-cyan);
            font-family: var(--font-mono);
            font-size: 14px;
        }

        .bubble-meta h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
        }

        .bubble-meta p {
            font-size: 12px;
            color: var(--text-muted);
            font-family: var(--font-mono);
        }

        /* 常见异议解答 */
        .faq-accordion-container {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-accordion-item {
            border: 1px solid var(--border-line);
            background: var(--bg-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
        }

        .faq-trigger {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-heading);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            outline: none;
        }

        .faq-trigger span:first-child {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .faq-icon-arrow {
            font-family: var(--font-mono);
            font-size: 16px;
            color: var(--accent-emerald);
            transition: var(--transition);
        }

        .faq-body {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1);
            background: rgba(0, 0, 0, 0.2);
        }

        .faq-body-inner {
            padding: 0 24px 20px;
            font-size: 14.5px;
            color: var(--text-muted);
            line-height: 1.75;
        }

        .faq-accordion-item.open .faq-body {
            max-height: 240px;
        }

        .faq-accordion-item.open .faq-icon-arrow {
            transform: rotate(45deg);
        }

        /* 接入入口与工程接入表单 (唯一收口行动区) */
        .cta-enroll-section {
            background: linear-gradient(180deg, var(--bg-subtle) 0%, #040608 100%);
            border-top: 1px solid var(--border-line);
        }

        .enroll-box {
            display: grid;
            grid-template-columns: 1.1fr 1fr;
            gap: 48px;
            background: var(--bg-card);
            border: 1px solid var(--border-line);
            border-radius: var(--radius-lg);
            padding: 48px;
        }

        .enroll-info h3 {
            font-size: 2rem;
            color: var(--text-heading);
            font-weight: 700;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .enroll-info p {
            font-size: 15px;
            color: var(--text-muted);
            margin-bottom: 24px;
            line-height: 1.7;
        }

        .spec-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
            font-size: 13.5px;
            color: var(--text-body);
        }

        .spec-list li {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .spec-list li::before {
            content: "✓";
            color: var(--accent-emerald);
            font-family: var(--font-mono);
            font-weight: bold;
        }

        .enroll-form {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .form-group {
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .form-group label {
            font-size: 13px;
            font-family: var(--font-mono);
            color: var(--text-body);
        }

        .form-control {
            background: #0d1117;
            border: 1px solid var(--border-line);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            color: var(--text-heading);
            font-size: 14px;
            outline: none;
            transition: var(--transition);
        }

        .form-control:focus {
            border-color: var(--accent-emerald);
            box-shadow: 0 0 10px rgba(0, 220, 130, 0.15);
        }

        .form-checkboxes {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-top: 4px;
        }

        .check-item {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            cursor: pointer;
        }

        .form-btn-submit {
            background-color: var(--accent-emerald);
            color: #000;
            border: none;
            padding: 14px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 15px;
            transition: var(--transition);
            margin-top: 10px;
        }

        .form-btn-submit:hover {
            background-color: #05f08f;
        }

        /* 页脚体系 */
        .site-footer {
            background-color: #040608;
            border-top: 1px solid var(--border-line);
            padding: 64px 0 32px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1.2fr 1.5fr 1.8fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-col h5 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-heading);
            margin-bottom: 18px;
            letter-spacing: -0.01em;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a:hover {
            color: var(--accent-emerald);
        }

        .footer-bottom-bar {
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-family: var(--font-mono);
            font-size: 12px;
        }

        /* 响应式断点控制 */
        @media (max-width: 1024px) {
            .hero-title { font-size: 2.6rem; }
            .hero-protocol-grid { grid-template-columns: repeat(2, 1fr); }
            .tier-commission-grid { grid-template-columns: 1fr; }
            .materials-layout { grid-template-columns: 1fr; }
            .settlement-steps { grid-template-columns: repeat(2, 1fr); }
            .capabilities-grid { grid-template-columns: repeat(2, 1fr); }
            .misconception-grid { grid-template-columns: 1fr; }
            .triple-pitch { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .quotes-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .enroll-box { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .site-nav {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: var(--bg-card);
                flex-direction: column;
                padding: 24px;
                border-bottom: 1px solid var(--border-line);
                gap: 16px;
            }
            .site-nav.open { display: flex; }
            .mobile-toggle { display: block; }
            .header-action { display: none; }
            .hero-title { font-size: 2.1rem; }
            .case-study-showcase { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .capabilities-grid { grid-template-columns: 1fr; }
            .settlement-steps { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .footer-bottom-bar { flex-direction: column; gap: 12px; text-align: center; }
            .form-checkboxes { grid-template-columns: 1fr 1fr; }
        }