/* roulang page: index */
:root {
      --bg-page: #F3F5F9;
      --bg-card: #FFFFFF;
      --bg-dark: #111419;
      --bg-dark-card: #1A202C;
      --bg-subtle: #EAEFF5;
      --primary: #1E293B;
      --accent-cyan: #00A389;
      --accent-blue: #0284C7;
      --accent-gold: #D97706;
      --text-main: #0F172A;
      --text-muted: #475569;
      --text-light: #94A3B8;
      --border-light: #E2E8F0;
      --border-dark: rgba(255, 255, 255, 0.1);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 2px 6px rgba(0, 0, 0, 0.02);
      --shadow-md: 0 4px 16px -2px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12);
      --font-mono: ui-monospace, "SFMono-Regular", "Roboto Mono", Consolas, monospace;
      --font-sans: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --transition: 200ms 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;
    }

    body {
      font-family: var(--font-sans);
      color: var(--text-main);
      background-color: var(--bg-page);
      line-height: 1.7;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
    }

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

    /* 顶部双行导航系统 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
      border-bottom: 1px solid var(--border-light);
    }

    .header-topbar {
      background: #0B111A;
      color: #94A3B8;
      font-size: 0.78rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 6px 0;
    }

    .topbar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    .topbar-info {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .status-indicator {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      color: #34D399;
      font-weight: 500;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      background: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 8px #10B981;
    }

    .topbar-contacts {
      display: flex;
      gap: 20px;
    }

    .topbar-contacts a:hover {
      color: #FFFFFF;
    }

    .nav-main {
      padding: 14px 0;
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.25rem;
      color: var(--primary);
      letter-spacing: -0.01em;
    }

    .brand-icon-box {
      width: 38px;
      height: 38px;
      background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-size: 1.1rem;
      font-family: var(--font-mono);
      font-weight: 800;
      box-shadow: 0 2px 8px rgba(0, 163, 137, 0.3);
    }

    .brand-title-wrap {
      display: flex;
      flex-direction: column;
    }

    .brand-subtext {
      font-size: 0.72rem;
      font-weight: 500;
      color: var(--text-muted);
      letter-spacing: 0.04em;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 28px;
      list-style: none;
    }

    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-muted);
      position: relative;
      padding: 6px 0;
    }

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

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-cyan);
      transition: width var(--transition);
    }

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

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      font-weight: 600;
      font-size: 0.9rem;
      padding: 10px 22px;
      border-radius: var(--radius-sm);
      border: 1px solid transparent;
      cursor: pointer;
      transition: all var(--transition);
      white-space: nowrap;
    }

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

    .btn-primary {
      background: var(--accent-cyan);
      color: #FFFFFF;
      box-shadow: 0 2px 8px rgba(0, 163, 137, 0.25);
    }

    .btn-primary:hover {
      background: #008f78;
      transform: translateY(-2px);
      box-shadow: 0 4px 14px rgba(0, 163, 137, 0.35);
    }

    .btn-secondary {
      background: #FFFFFF;
      color: var(--primary);
      border-color: var(--border-light);
    }

    .btn-secondary:hover {
      background: #F8FAFC;
      border-color: #CBD5E1;
      transform: translateY(-2px);
    }

    .btn-dark {
      background: #1E293B;
      color: #FFFFFF;
    }

    .btn-dark:hover {
      background: #0F172A;
      transform: translateY(-2px);
    }

    .btn-sm {
      padding: 6px 14px;
      font-size: 0.82rem;
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      color: var(--text-main);
      font-size: 1.5rem;
      cursor: pointer;
      padding: 6px;
    }

    /* 板块通用规范 */
    .sec-block {
      padding: 84px 0;
      position: relative;
    }

    .sec-header {
      text-align: center;
      max-width: 820px;
      margin: 0 auto 52px auto;
    }

    .sec-kicker {
      display: inline-block;
      font-size: 0.8rem;
      font-weight: 700;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--accent-cyan);
      margin-bottom: 10px;
      background: rgba(0, 163, 137, 0.08);
      padding: 3px 12px;
      border-radius: 999px;
      border: 1px solid rgba(0, 163, 137, 0.2);
    }

    .sec-title {
      font-size: clamp(1.6rem, 2.8vw, 2.25rem);
      font-weight: 800;
      color: var(--primary);
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: -0.015em;
    }

    .sec-desc {
      font-size: 1.02rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 板块 1: Hero 试用申请与先导工程流 */
    .hero-section {
      background: #0F172A;
      color: #FFFFFF;
      padding: 96px 0 80px 0;
      position: relative;
      overflow: hidden;
      background-image: radial-gradient(circle at 80% 20%, rgba(2, 132, 199, 0.15) 0%, transparent 50%),
                        radial-gradient(circle at 20% 80%, rgba(0, 163, 137, 0.12) 0%, transparent 60%);
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 52px;
      align-items: center;
    }

    .hero-h1 {
      font-size: clamp(2.1rem, 3.8vw, 3.2rem);
      font-weight: 800;
      line-height: 1.22;
      letter-spacing: -0.02em;
      margin-bottom: 22px;
      color: #FFFFFF;
    }

    .hero-h1 .text-highlight {
      background: linear-gradient(135deg, #2DD4BF, #38BDF8);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-desc {
      font-size: 1.08rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 30px;
    }

    .hero-badge-group {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-bottom: 34px;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.14);
      padding: 6px 14px;
      border-radius: var(--radius-sm);
      font-size: 0.82rem;
      color: #E2E8F0;
      font-family: var(--font-mono);
    }

    .hero-badge-icon {
      color: #2DD4BF;
      font-weight: bold;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }

    .hero-trust-bar {
      display: flex;
      align-items: center;
      gap: 24px;
      padding-top: 24px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      font-size: 0.84rem;
      color: #94A3B8;
    }

    .hero-card-panel {
      background: rgba(30, 41, 59, 0.85);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 32px;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
      position: relative;
    }

    .panel-header {
      margin-bottom: 22px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding-bottom: 14px;
    }

    .panel-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: #FFFFFF;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .panel-tag {
      font-size: 0.75rem;
      background: rgba(0, 163, 137, 0.25);
      color: #2DD4BF;
      padding: 2px 8px;
      border-radius: 4px;
    }

    .flow-steps {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .flow-item {
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }

    .flow-num {
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: #0284C7;
      color: #FFF;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.78rem;
      font-family: var(--font-mono);
      font-weight: bold;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .flow-content h4 {
      font-size: 0.95rem;
      color: #F8FAFC;
      margin-bottom: 2px;
    }

    .flow-content p {
      font-size: 0.82rem;
      color: #94A3B8;
      line-height: 1.5;
    }

    /* 板块 2: 安全主张 */
    .sec-security {
      background: #FFFFFF;
      border-bottom: 1px solid var(--border-light);
    }

    .security-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .sec-card {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 30px;
      background: #F8FAFC;
      transition: all var(--transition);
      position: relative;
    }

    .sec-card:hover {
      border-color: #CBD5E1;
      transform: translateY(-3px);
      box-shadow: var(--shadow-md);
    }

    .sec-card-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--radius-sm);
      background: rgba(0, 163, 137, 0.1);
      color: var(--accent-cyan);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 20px;
      font-weight: bold;
    }

    .sec-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .sec-card p {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块 3: 核心优势矩阵 (6卡片) */
    .sec-advantages {
      background: var(--bg-page);
    }

    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .adv-card {
      background: var(--bg-card);
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

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

    .adv-top {
      display: flex;
      justify-content: space-between;
      align-items: flex-start;
      margin-bottom: 16px;
    }

    .adv-code {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--accent-blue);
      background: rgba(2, 132, 199, 0.08);
      padding: 2px 8px;
      border-radius: 4px;
      font-weight: 600;
    }

    .adv-title {
      font-size: 1.12rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .adv-desc {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.68;
      margin-bottom: 18px;
    }

    .adv-footer {
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .adv-metric {
      font-family: var(--font-mono);
      font-weight: 700;
      color: var(--accent-cyan);
    }

    /* 板块 4: 检查项清单 */
    .sec-checklist {
      background: #FFFFFF;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }

    .table-container {
      overflow-x: auto;
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }

    .spec-table {
      width: 100%;
      border-collapse: collapse;
      text-align: left;
      font-size: 0.92rem;
    }

    .spec-table th {
      background: #F8FAFC;
      color: var(--primary);
      font-weight: 700;
      padding: 16px 20px;
      border-bottom: 2px solid var(--border-light);
      white-space: nowrap;
    }

    .spec-table td {
      padding: 16px 20px;
      border-bottom: 1px solid var(--border-light);
      color: var(--text-muted);
    }

    .spec-table tr:last-child td {
      border-bottom: none;
    }

    .spec-table tr:hover td {
      background: #F8FAFC;
    }

    .badge-pass {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      background: rgba(16, 185, 129, 0.1);
      color: #059669;
      padding: 2px 8px;
      border-radius: 4px;
      font-size: 0.78rem;
      font-weight: 600;
    }

    /* 板块 5: 热门方案展示 (3卡片) */
    .sec-products {
      background: var(--bg-page);
    }

    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .pkg-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
    }

    .pkg-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-lg);
      border-color: #CBD5E1;
    }

    .pkg-img-wrap {
      height: 200px;
      overflow: hidden;
      background: #0B111A;
      position: relative;
    }

    .pkg-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .pkg-card:hover .pkg-img-wrap img {
      transform: scale(1.04);
    }

    .pkg-tag {
      position: absolute;
      top: 14px;
      right: 14px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(4px);
      color: #38BDF8;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 4px;
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .pkg-body {
      padding: 26px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .pkg-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .pkg-summary {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 20px;
    }

    .pkg-params {
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      padding: 14px;
      border: 1px solid var(--border-light);
      margin-bottom: 22px;
    }

    .param-row {
      display: flex;
      justify-content: space-between;
      font-size: 0.82rem;
      padding: 4px 0;
      border-bottom: 1px dashed #E2E8F0;
    }

    .param-row:last-child {
      border-bottom: none;
    }

    .param-label {
      color: #64748B;
    }

    .param-value {
      font-family: var(--font-mono);
      font-weight: 600;
      color: var(--text-main);
    }

    /* 板块 6: 深色沉浸式工艺流程 */
    .sec-dark-process {
      background: var(--bg-dark);
      color: #FFFFFF;
      padding: 92px 0;
      background-image: linear-gradient(180deg, #111419 0%, #161B22 100%);
    }

    .sec-dark-process .sec-title {
      color: #FFFFFF;
    }

    .sec-dark-process .sec-desc {
      color: #94A3B8;
    }

    .process-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
      margin-top: 48px;
    }

    .proc-step {
      background: var(--bg-dark-card);
      border: 1px solid var(--border-dark);
      border-radius: var(--radius-md);
      padding: 26px;
      position: relative;
      transition: all var(--transition);
    }

    .proc-step:hover {
      border-color: rgba(0, 163, 137, 0.4);
      transform: translateY(-3px);
    }

    .proc-step-num {
      font-family: var(--font-mono);
      font-size: 2.2rem;
      font-weight: 800;
      color: rgba(255, 255, 255, 0.12);
      line-height: 1;
      margin-bottom: 14px;
    }

    .proc-step h4 {
      font-size: 1.1rem;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 10px;
    }

    .proc-step p {
      font-size: 0.86rem;
      color: #94A3B8;
      line-height: 1.65;
    }

    .proc-step .tech-point {
      margin-top: 14px;
      padding-top: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.78rem;
      color: #2DD4BF;
      font-family: var(--font-mono);
    }

    /* 板块 7: 边界说明与工艺极限 */
    .sec-boundary {
      background: #FFFFFF;
    }

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

    .boundary-content h3 {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 18px;
      line-height: 1.35;
    }

    .boundary-content p {
      font-size: 0.96rem;
      color: var(--text-muted);
      line-height: 1.75;
      margin-bottom: 24px;
    }

    .boundary-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
    }

    .boundary-list li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.92rem;
      color: var(--text-main);
    }

    .boundary-bullet {
      width: 6px;
      height: 6px;
      background: var(--accent-cyan);
      border-radius: 50%;
    }

    .boundary-box {
      background: #F8FAFC;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 32px;
    }

    .boundary-box h4 {
      font-size: 1.1rem;
      color: var(--primary);
      margin-bottom: 18px;
      border-bottom: 1px solid var(--border-light);
      padding-bottom: 10px;
    }

    .limit-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
    }

    .limit-item {
      background: #FFFFFF;
      padding: 14px;
      border-radius: var(--radius-sm);
      border: 1px solid #E2E8F0;
    }

    .limit-name {
      font-size: 0.78rem;
      color: #64748B;
      margin-bottom: 4px;
    }

    .limit-val {
      font-family: var(--font-mono);
      font-weight: 700;
      font-size: 1.15rem;
      color: var(--accent-blue);
    }

    /* 板块 8: 统计数据条 */
    .sec-stats {
      background: var(--bg-subtle);
      border-top: 1px solid #E2E8F0;
      border-bottom: 1px solid #E2E8F0;
      padding: 56px 0;
    }

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

    .stat-item {
      padding: 0 16px;
      border-right: 1px solid #CBD5E1;
    }

    .stat-item:last-child {
      border-right: none;
    }

    .stat-num {
      font-family: var(--font-mono);
      font-size: 2.7rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.15;
      margin-bottom: 8px;
    }

    .stat-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }

    .stat-sub {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块 9: 场景应用与客户案例 */
    .sec-cases {
      background: #FFFFFF;
    }

    .cases-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
    }

    .case-card {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: #FFFFFF;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
    }

    .case-card:hover {
      box-shadow: var(--shadow-lg);
      border-color: #CBD5E1;
    }

    .case-img {
      height: 240px;
      position: relative;
      background: #0B111A;
    }

    .case-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

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

    .case-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .case-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .case-meta {
      background: #F8FAFC;
      border-radius: var(--radius-sm);
      padding: 14px;
      font-size: 0.82rem;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      border: 1px solid var(--border-light);
    }

    /* 板块 10: 合规徽章与质检体系 */
    .sec-compliance {
      background: var(--bg-page);
    }

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

    .comp-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
    }

    .comp-card:hover {
      border-color: var(--accent-blue);
      transform: translateY(-2px);
    }

    .comp-badge-name {
      font-family: var(--font-mono);
      font-weight: 800;
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .comp-desc {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 板块 11: 资讯与前沿动态 (首页内嵌) */
    .sec-news {
      background: #FFFFFF;
      border-top: 1px solid var(--border-light);
    }

    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all var(--transition);
      display: flex;
      flex-direction: column;
    }

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

    .news-thumb {
      height: 180px;
      overflow: hidden;
      background: #0B111A;
    }

    .news-thumb img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s;
    }

    .news-card:hover .news-thumb img {
      transform: scale(1.05);
    }

    .news-body {
      padding: 22px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .news-date {
      font-family: var(--font-mono);
      font-size: 0.78rem;
      color: #64748B;
      margin-bottom: 8px;
    }

    .news-card-title {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 10px;
      line-height: 1.4;
    }

    .news-snippet {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }

    .news-trigger {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--accent-cyan);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      cursor: pointer;
    }

    .news-trigger:hover {
      color: #008f78;
    }

    /* 板块 12: 信任背书与评价 */
    .sec-testimonials {
      background: var(--bg-page);
    }

    .testi-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 28px;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-stars {
      color: #F59E0B;
      font-size: 0.95rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }

    .testi-quote {
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      font-style: normal;
    }

    .testi-author {
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
    }

    .author-name {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--primary);
    }

    .author-org {
      font-size: 0.78rem;
      color: #64748B;
    }

    /* 板块 13: FAQ 手风琴 */
    .sec-faq {
      background: #FFFFFF;
      border-top: 1px solid var(--border-light);
    }

    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .faq-item {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-sm);
      background: #FFFFFF;
      transition: all var(--transition);
      overflow: hidden;
    }

    .faq-item[open] {
      border-color: var(--accent-cyan);
      box-shadow: var(--shadow-sm);
    }

    .faq-summary {
      padding: 18px 24px;
      font-size: 1.05rem;
      font-weight: 600;
      color: var(--primary);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }

    .faq-summary::-webkit-details-marker {
      display: none;
    }

    .faq-icon-arrow {
      font-size: 1.1rem;
      transition: transform var(--transition);
      color: #64748B;
    }

    .faq-item[open] .faq-icon-arrow {
      transform: rotate(180deg);
      color: var(--accent-cyan);
    }

    .faq-body {
      padding: 0 24px 20px 24px;
      font-size: 0.94rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      margin-top: 4px;
      padding-top: 14px;
    }

    /* 板块 14: 需求评估表单 CTA */
    .sec-cta-form {
      background: #0F172A;
      color: #FFFFFF;
      padding: 88px 0;
      position: relative;
      background-image: radial-gradient(circle at 90% 10%, rgba(2, 132, 199, 0.18) 0%, transparent 60%);
    }

    .cta-container {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 48px;
      align-items: center;
    }

    .cta-intro h2 {
      font-size: clamp(1.8rem, 3vw, 2.5rem);
      font-weight: 800;
      line-height: 1.3;
      margin-bottom: 20px;
      color: #FFFFFF;
    }

    .cta-intro p {
      font-size: 1.02rem;
      color: #CBD5E1;
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .cta-contacts-mini {
      display: flex;
      flex-direction: column;
      gap: 14px;
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding-top: 24px;
    }

    .contact-item {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 0.92rem;
      color: #E2E8F0;
    }

    .contact-badge {
      background: rgba(0, 163, 137, 0.2);
      color: #2DD4BF;
      padding: 4px 10px;
      border-radius: 4px;
      font-size: 0.8rem;
      font-family: var(--font-mono);
    }

    .form-card {
      background: #1E293B;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 36px;
      box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
    }

    .form-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 18px;
    }

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

    .form-group.full {
      grid-column: span 2;
    }

    .form-label {
      font-size: 0.85rem;
      font-weight: 600;
      color: #E2E8F0;
    }

    .form-control {
      background: #0F172A;
      border: 1px solid rgba(255, 255, 255, 0.15);
      border-radius: var(--radius-sm);
      padding: 10px 14px;
      color: #FFFFFF;
      font-size: 0.9rem;
      outline: none;
      transition: border-color var(--transition);
    }

    .form-control:focus {
      border-color: var(--accent-cyan);
      box-shadow: 0 0 0 2px rgba(0, 163, 137, 0.2);
    }

    .form-control option {
      background: #0F172A;
      color: #FFF;
    }

    textarea.form-control {
      resize: vertical;
      min-height: 84px;
    }

    .btn-submit {
      width: 100%;
      background: var(--accent-cyan);
      color: #FFF;
      padding: 13px;
      font-size: 1rem;
      font-weight: 700;
      border-radius: var(--radius-sm);
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(0, 163, 137, 0.3);
      transition: all var(--transition);
      margin-top: 6px;
    }

    .btn-submit:hover {
      background: #008f78;
      transform: translateY(-2px);
    }

    .form-note {
      font-size: 0.78rem;
      color: #94A3B8;
      text-align: center;
      margin-top: 12px;
    }

    /* 移动端常驻吸底固定条 */
    .mobile-fixed-bar {
      display: none;
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: #0F172A;
      border-top: 1px solid rgba(255, 255, 255, 0.15);
      padding: 10px 16px;
      z-index: 999;
      box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.3);
    }

    .mobile-bar-inner {
      display: flex;
      gap: 12px;
      align-items: center;
    }

    .mobile-btn-call {
      flex: 1;
      background: #1E293B;
      color: #F8FAFC;
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: var(--radius-sm);
      padding: 10px;
      font-size: 0.88rem;
      font-weight: 600;
      text-align: center;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 6px;
    }

    .mobile-btn-cta {
      flex: 1.5;
      background: var(--accent-cyan);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-sm);
      padding: 10px;
      font-size: 0.88rem;
      font-weight: 700;
      text-align: center;
      box-shadow: 0 2px 8px rgba(0, 163, 137, 0.3);
    }

    /* 页脚设计 */
    .site-footer {
      background: #0A0E14;
      color: #94A3B8;
      padding: 72px 0 28px 0;
      font-size: 0.9rem;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1.2fr 1fr;
      gap: 40px;
      margin-bottom: 56px;
    }

    .footer-col h4 {
      color: #F8FAFC;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
      letter-spacing: 0.02em;
    }

    .footer-desc {
      font-size: 0.86rem;
      line-height: 1.7;
      margin-top: 12px;
      color: #64748B;
    }

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

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

    .footer-info-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 0.86rem;
    }

    .footer-certs {
      display: flex;
      flex-direction: column;
      gap: 8px;
      font-size: 0.82rem;
      font-family: var(--font-mono);
      color: #CBD5E1;
    }

    .footer-cert-pill {
      background: rgba(255, 255, 255, 0.05);
      padding: 6px 10px;
      border-radius: 4px;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
      font-size: 0.82rem;
      color: #64748B;
    }

    .footer-bottom a {
      color: #64748B;
    }

    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 原生轻量模态框 (纯页内查看) */
    .modal-overlay {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(4px);
      z-index: 1000;
      align-items: center;
      justify-content: center;
      padding: 20px;
    }

    .modal-box {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      max-width: 640px;
      width: 100%;
      padding: 32px;
      position: relative;
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
      max-height: 85vh;
      overflow-y: auto;
    }

    .modal-close {
      position: absolute;
      top: 20px;
      right: 20px;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: #64748B;
    }

    .modal-title {
      font-size: 1.3rem;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 14px;
    }

    .modal-content {
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.75;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
      }
      .security-grid, .advantage-grid, .product-grid, .news-grid, .testi-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .process-timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
      .stat-item {
        border-right: none;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
      }
      .cta-container {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .header-topbar {
        display: none;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border-light);
        gap: 16px;
      }
      .nav-links.show-mobile {
        display: flex;
      }
      .mobile-menu-btn {
        display: block;
      }
      .nav-actions .btn {
        display: none;
      }
      .security-grid, .advantage-grid, .product-grid, .news-grid, .testi-grid, .compliance-grid, .cases-grid, .process-timeline {
        grid-template-columns: 1fr;
      }
      .boundary-layout {
        grid-template-columns: 1fr;
      }
      .form-grid {
        grid-template-columns: 1fr;
      }
      .form-group.full {
        grid-column: span 1;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .mobile-fixed-bar {
        display: block;
      }
      body {
        padding-bottom: 60px;
      }
      .sec-block {
        padding: 60px 0;
      }
    }

    @media (max-width: 480px) {
      .stats-grid {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
        width: 100%;
      }
      .hero-actions .btn {
        width: 100%;
      }
    }