/* roulang page: index */
:root {
      --primary-dark: #090D16;
      --primary: #0F172A;
      --secondary: #1E293B;
      --muted: #64748B;
      --light-bg: #F8FAFC;
      --white: #FFFFFF;
      --accent: #0EA5E9;
      --accent-deep: #2563EB;
      --border-color: #E2E8F0;
      --border-dark: #1E293B;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 10px 25px -5px rgba(0,0,0,0.03);
      --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 20px 25px -5px rgba(0,0,0,0.05);
      --font-stack: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      --radius: 6px;
      --radius-sm: 4px;
      --transition: all 0.2s 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);
      color: var(--secondary);
      background-color: var(--white);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

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

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

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

    .container {
      width: 100%;
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    /* Top Meta Bar */
    .top-meta-bar {
      background: #0B1120;
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      position: relative;
      z-index: 100;
    }

    .top-meta-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 38px;
    }

    .meta-status {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .status-dot {
      width: 7px;
      height: 7px;
      background: #10B981;
      border-radius: 50%;
      box-shadow: 0 0 6px #10B981;
    }

    .meta-contacts {
      display: flex;
      align-items: center;
      gap: 20px;
    }

    /* Main Navbar */
    .site-header {
      position: sticky;
      top: 0;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      z-index: 99;
      transition: var(--transition);
    }

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

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 700;
      font-size: 1.18rem;
      color: var(--primary);
      letter-spacing: -0.02em;
    }

    .logo-badge {
      background: var(--primary);
      color: #FFF;
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      font-size: 0.75rem;
      letter-spacing: 0.05em;
    }

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

    .nav-link {
      font-size: 0.9375rem;
      font-weight: 500;
      color: #334155;
      position: relative;
      padding: 6px 0;
    }

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

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

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

    .nav-cta {
      display: inline-flex;
      align-items: center;
      padding: 10px 20px;
      background: var(--accent-deep);
      color: #FFF;
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: var(--radius);
      border: 1px solid transparent;
      box-shadow: 0 2px 4px rgba(37,99,235,0.2);
    }

    .nav-cta:hover {
      background: #1D4ED8;
      transform: translateY(-1px);
    }

    .mobile-menu-btn {
      display: none;
      background: transparent;
      border: 1px solid var(--border-color);
      padding: 8px 12px;
      border-radius: var(--radius-sm);
      cursor: pointer;
    }

    /* Section Foundations */
    section {
      padding: 96px 0;
      position: relative;
    }

    .section-title-wrap {
      margin-bottom: 56px;
      max-width: 760px;
    }

    .section-tag {
      display: inline-block;
      font-size: 0.75rem;
      text-transform: uppercase;
      font-weight: 700;
      letter-spacing: 0.12em;
      color: var(--accent-deep);
      margin-bottom: 12px;
      padding: 3px 10px;
      background: rgba(14, 165, 233, 0.08);
      border-radius: var(--radius-sm);
      border-left: 3px solid var(--accent);
    }

    .section-h2 {
      font-size: 2.25rem;
      line-height: 1.25;
      font-weight: 700;
      letter-spacing: -0.02em;
      color: var(--primary);
      margin-bottom: 18px;
    }

    .section-desc {
      font-size: 1.0625rem;
      color: var(--muted);
      line-height: 1.8;
    }

    /* Hero Section (Blueprinted: 试用申请, 权益徽章 + 资格说明 + 申请按钮) */
    .hero-section {
      padding: 80px 0 100px;
      background: #0B0F19;
      color: #FFF;
      position: relative;
      overflow: hidden;
    }

    .hero-bg-cover {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.18;
      filter: saturate(1.2) contrast(1.1);
      pointer-events: none;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
      position: relative;
      z-index: 2;
    }

    .hero-badge-wrap {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 6px 14px;
      border-radius: 30px;
      margin-bottom: 24px;
      font-size: 0.84rem;
      color: #38BDF8;
    }

    .hero-h1 {
      font-size: 3.15rem;
      line-height: 1.18;
      font-weight: 800;
      letter-spacing: -0.03em;
      margin-bottom: 24px;
      color: #F8FAFC;
    }

    .hero-h1 span {
      background: linear-gradient(135deg, #38BDF8 0%, #60A5FA 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-intro {
      font-size: 1.08rem;
      line-height: 1.85;
      color: #CBD5E1;
      margin-bottom: 36px;
    }

    .hero-rights-matrix {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
      margin-bottom: 36px;
      padding-top: 16px;
      border-top: 1px solid rgba(255,255,255,0.1);
    }

    .right-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 0.875rem;
      color: #94A3B8;
    }

    .right-item strong {
      color: #F1F5F9;
      display: block;
      margin-bottom: 2px;
    }

    /* Bento Hero Box */
    .hero-action-card {
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255, 255, 255, 0.14);
      padding: 36px;
      border-radius: 8px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }

    .action-card-header {
      margin-bottom: 22px;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding-bottom: 18px;
    }

    .action-card-header h3 {
      font-size: 1.35rem;
      color: #FFF;
      margin-bottom: 6px;
    }

    .action-card-header p {
      font-size: 0.875rem;
      color: #94A3B8;
    }

    .eligibility-note {
      background: rgba(14, 165, 233, 0.08);
      border: 1px solid rgba(14, 165, 233, 0.2);
      border-radius: var(--radius-sm);
      padding: 12px 14px;
      font-size: 0.84rem;
      color: #7DD3FC;
      line-height: 1.6;
      margin-bottom: 24px;
    }

    .btn-apply-full {
      width: 100%;
      background: #0284C7;
      color: #FFF;
      padding: 14px;
      font-size: 1rem;
      font-weight: 600;
      border-radius: var(--radius);
      border: none;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: var(--transition);
      box-shadow: 0 4px 12px rgba(2, 132, 199, 0.35);
    }

    .btn-apply-full:hover {
      background: #0369A1;
      transform: translateY(-2px);
    }

    .hero-card-meta {
      margin-top: 18px;
      display: flex;
      justify-content: space-between;
      font-size: 0.78rem;
      color: #64748B;
    }

    /* Section 2: Audience (适用人群) */
    .audience-section {
      background: var(--light-bg);
      border-bottom: 1px solid var(--border-color);
    }

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

    .audience-card {
      background: var(--white);
      padding: 32px 28px;
      border-radius: var(--radius);
      border: 1px solid var(--border-color);
      transition: var(--transition);
    }

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

    .audience-role {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--accent-deep);
      text-transform: uppercase;
      letter-spacing: 0.08em;
      margin-bottom: 10px;
    }

    .audience-card h3 {
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 14px;
    }

    .audience-card p {
      font-size: 0.9375rem;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 20px;
    }

    .audience-focus-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }

    .audience-tag {
      background: #F1F5F9;
      font-size: 0.75rem;
      color: #475569;
      padding: 3px 8px;
      border-radius: 3px;
    }

    /* Section 3: Fit vs Not Fit (谁适合 / 谁不适合) */
    .fit-section {
      background: var(--white);
    }

    .fit-contrast-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }

    .fit-column {
      border-radius: var(--radius);
      padding: 40px;
      border: 1px solid var(--border-color);
    }

    .fit-column.positive {
      background: #F8FAFC;
      border-top: 4px solid #10B981;
    }

    .fit-column.negative {
      background: #FAFAFA;
      border-top: 4px solid #94A3B8;
    }

    .fit-title-bar {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 24px;
    }

    .fit-icon-tag {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.95rem;
      font-weight: 700;
    }

    .positive .fit-icon-tag {
      background: #D1FAE5;
      color: #065F46;
    }

    .negative .fit-icon-tag {
      background: #E2E8F0;
      color: #475569;
    }

    .fit-title-bar h3 {
      font-size: 1.375rem;
      color: var(--primary);
    }

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

    .fit-list li {
      font-size: 0.9375rem;
      line-height: 1.65;
      color: #334155;
      padding-left: 24px;
      position: relative;
    }

    .fit-list li::before {
      content: '—';
      position: absolute;
      left: 0;
      color: var(--muted);
      font-weight: 700;
    }

    .positive .fit-list li::before {
      content: '✓';
      color: #10B981;
    }

    /* Section 4: Brand & Architecture Overview (底座微内核架构) */
    .arch-overview-section {
      background: #F1F5F9;
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .arch-overview-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }

    .arch-content h3 {
      font-size: 1.65rem;
      color: var(--primary);
      margin-bottom: 18px;
      line-height: 1.3;
    }

    .arch-content p {
      font-size: 0.98rem;
      color: #475569;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .param-verify-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .param-verify-title {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--secondary);
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 10px;
      margin-bottom: 14px;
      display: flex;
      justify-content: space-between;
    }

    .param-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 16px;
    }

    .param-unit {
      font-size: 0.8125rem;
      color: var(--muted);
    }

    .param-unit strong {
      display: block;
      font-size: 1.15rem;
      color: var(--accent-deep);
      margin-bottom: 2px;
    }

    /* Section 5: Core Advantages 6 Matrices (核心技术六矩阵) */
    .advantages-section {
      background: var(--white);
    }

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

    .adv-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px 26px;
      background: var(--white);
      transition: var(--transition);
      position: relative;
    }

    .adv-card:hover {
      border-color: #94A3B8;
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }

    .adv-index {
      font-size: 0.8125rem;
      font-weight: 800;
      color: #94A3B8;
      margin-bottom: 14px;
      letter-spacing: 0.05em;
    }

    .adv-card h3 {
      font-size: 1.25rem;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .adv-card p {
      font-size: 0.925rem;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 18px;
    }

    .adv-proof {
      font-size: 0.8125rem;
      color: #475569;
      background: #F8FAFC;
      padding: 8px 12px;
      border-radius: 4px;
      border-left: 2px solid var(--accent);
    }

    /* Section 6: Product Lineup & Suites (产品主干套件) */
    .suites-section {
      background: var(--light-bg);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .suites-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }

    .suite-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }

    .suite-card:hover {
      border-color: var(--accent);
      box-shadow: var(--shadow-md);
    }

    .suite-badge {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 3px 8px;
      background: #E0F2FE;
      color: #0369A1;
      border-radius: 3px;
      margin-bottom: 16px;
    }

    .suite-card h3 {
      font-size: 1.35rem;
      color: var(--primary);
      margin-bottom: 12px;
    }

    .suite-card p {
      font-size: 0.9375rem;
      color: var(--muted);
      margin-bottom: 24px;
      line-height: 1.7;
    }

    .suite-specs {
      list-style: none;
      margin-bottom: 28px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .suite-specs li {
      font-size: 0.85rem;
      color: #334155;
      display: flex;
      justify-content: space-between;
    }

    .suite-btn {
      display: block;
      text-align: center;
      padding: 10px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.875rem;
      color: var(--secondary);
      background: #F8FAFC;
    }

    .suite-btn:hover {
      background: var(--primary);
      color: #FFF;
      border-color: var(--primary);
    }

    /* Section 7: Dark Architecture Philosophy (深色架构纵深) */
    .dark-topology-section {
      background: var(--primary-dark);
      color: #FFF;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }

    .dark-topology-section .section-h2 {
      color: #FFF;
    }

    .dark-topology-section .section-desc {
      color: #94A3B8;
    }

    .topo-flow-wrapper {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      margin-top: 40px;
    }

    .topo-node {
      background: #111827;
      border: 1px solid rgba(255,255,255,0.1);
      border-radius: var(--radius);
      padding: 24px 20px;
      position: relative;
    }

    .node-level {
      font-size: 0.75rem;
      color: var(--accent);
      font-family: monospace;
      margin-bottom: 8px;
    }

    .topo-node h4 {
      font-size: 1.05rem;
      color: #F3F4F6;
      margin-bottom: 10px;
    }

    .topo-node p {
      font-size: 0.85rem;
      color: #9CA3AF;
      line-height: 1.6;
    }

    /* Section 8: Match Plans / Scenarios (匹配方案与落地矩阵) */
    .scenario-matrix-section {
      background: var(--white);
    }

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

    .scenario-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      background: var(--white);
      transition: var(--transition);
    }

    .scenario-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-2px);
    }

    .scenario-thumb {
      height: 160px;
      width: 100%;
      object-fit: cover;
    }

    .scenario-body {
      padding: 24px 20px;
    }

    .scenario-body h3 {
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .scenario-body p {
      font-size: 0.88rem;
      color: var(--muted);
      line-height: 1.65;
      margin-bottom: 16px;
    }

    .scenario-fit-point {
      font-size: 0.8rem;
      color: #2563EB;
      background: #EFF6FF;
      padding: 4px 8px;
      border-radius: 3px;
      display: inline-block;
    }

    /* Section 9: Performance Metrics Bar (关键效能指标) */
    .metrics-bar-section {
      background: #0F172A;
      color: #FFF;
      padding: 60px 0;
    }

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

    .metric-item {
      padding: 10px 20px;
      border-right: 1px solid rgba(255,255,255,0.1);
    }

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

    .metric-num {
      font-size: 2.6rem;
      font-weight: 800;
      color: #38BDF8;
      letter-spacing: -0.03em;
      margin-bottom: 6px;
      line-height: 1.1;
    }

    .metric-label {
      font-size: 0.9rem;
      color: #E2E8F0;
      font-weight: 600;
      margin-bottom: 4px;
    }

    .metric-sub {
      font-size: 0.78rem;
      color: #94A3B8;
    }

    /* Section 10: User Story & In-depth Evidence (标杆实践与落地证据) */
    .story-evidence-section {
      background: var(--light-bg);
    }

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

    .story-image-wrap {
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
    }

    .story-content h3 {
      font-size: 1.85rem;
      line-height: 1.3;
      color: var(--primary);
      margin-bottom: 20px;
    }

    .story-content p {
      font-size: 0.98rem;
      color: #475569;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .story-results-card {
      background: var(--white);
      border-left: 3px solid var(--accent-deep);
      padding: 16px 20px;
      border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
      margin-bottom: 24px;
      box-shadow: var(--shadow-sm);
    }

    .story-results-card strong {
      display: block;
      color: var(--primary);
      font-size: 0.92rem;
      margin-bottom: 4px;
    }

    .story-results-card span {
      font-size: 0.85rem;
      color: var(--muted);
    }

    /* Section 11: Portal & Routing 分流入口 */
    .routing-hub-section {
      background: var(--white);
      border-top: 1px solid var(--border-color);
    }

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

    .routing-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 28px;
      background: #FAFAFA;
      transition: var(--transition);
    }

    .routing-card:hover {
      background: var(--white);
      border-color: var(--accent-deep);
      box-shadow: var(--shadow-sm);
    }

    .routing-type {
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--accent-deep);
      margin-bottom: 8px;
    }

    .routing-card h3 {
      font-size: 1.2rem;
      color: var(--primary);
      margin-bottom: 10px;
    }

    .routing-card p {
      font-size: 0.88rem;
      color: var(--muted);
      line-height: 1.65;
      margin-bottom: 18px;
    }

    .routing-anchor {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--accent-deep);
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* Section 12: Pricing / Package Matrix (套餐对比与规划) */
    .tier-matrix-section {
      background: var(--light-bg);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

    .tier-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
      align-items: stretch;
    }

    .tier-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 36px 30px;
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .tier-card.featured {
      border-color: var(--accent-deep);
      box-shadow: 0 10px 30px -10px rgba(37,99,235,0.15);
    }

    .tier-featured-tag {
      position: absolute;
      top: -12px;
      right: 24px;
      background: var(--accent-deep);
      color: #FFF;
      font-size: 0.72rem;
      font-weight: 700;
      padding: 2px 10px;
      border-radius: 12px;
      text-transform: uppercase;
    }

    .tier-card h3 {
      font-size: 1.35rem;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .tier-tagline {
      font-size: 0.875rem;
      color: var(--muted);
      margin-bottom: 24px;
      min-height: 42px;
    }

    .tier-price-box {
      border-bottom: 1px solid var(--border-color);
      padding-bottom: 20px;
      margin-bottom: 24px;
    }

    .tier-scale {
      font-size: 1.8rem;
      font-weight: 800;
      color: var(--primary);
    }

    .tier-scale span {
      font-size: 0.85rem;
      font-weight: 400;
      color: var(--muted);
    }

    .tier-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-bottom: 32px;
      flex-grow: 1;
    }

    .tier-features li {
      font-size: 0.875rem;
      color: #334155;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .tier-features li::before {
      content: '✓';
      color: #10B981;
      font-weight: 700;
    }

    .tier-btn {
      display: block;
      text-align: center;
      padding: 12px;
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      font-weight: 600;
      background: #F1F5F9;
      color: var(--secondary);
      transition: var(--transition);
    }

    .tier-card.featured .tier-btn {
      background: var(--accent-deep);
      color: #FFF;
    }

    .tier-btn:hover {
      filter: brightness(0.95);
    }

    /* Section 13: Testimonials / Word of Mouth (用户口碑与评价墙) */
    .testimonials-section {
      background: var(--white);
    }

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

    .testi-card {
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      background: #FAFAFA;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .testi-stars {
      color: #F59E0B;
      font-size: 0.85rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }

    .testi-quote {
      font-size: 0.925rem;
      line-height: 1.75;
      color: #334155;
      margin-bottom: 24px;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
      border-top: 1px solid #E2E8F0;
      padding-top: 16px;
    }

    .testi-avatar-placeholder {
      width: 40px;
      height: 40px;
      background: #CBD5E1;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: #475569;
      font-size: 0.85rem;
    }

    .testi-author h4 {
      font-size: 0.875rem;
      color: var(--primary);
    }

    .testi-author p {
      font-size: 0.75rem;
      color: var(--muted);
    }

    /* Section 14: News & Insights Hub (资讯列表与更新动态) */
    .news-section {
      background: var(--light-bg);
      border-top: 1px solid var(--border-color);
    }

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

    .news-card {
      background: var(--white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .news-card:hover {
      box-shadow: var(--shadow-sm);
      transform: translateY(-2px);
    }

    .news-thumb {
      height: 170px;
      width: 100%;
      object-fit: cover;
    }

    .news-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .news-meta-date {
      font-size: 0.75rem;
      color: #94A3B8;
      margin-bottom: 8px;
      display: block;
    }

    .news-body h3 {
      font-size: 1.15rem;
      color: var(--primary);
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .news-body p {
      font-size: 0.875rem;
      color: var(--muted);
      line-height: 1.7;
      margin-bottom: 18px;
      flex-grow: 1;
    }

    .news-link {
      font-size: 0.85rem;
      color: var(--accent-deep);
      font-weight: 600;
    }

    /* Section 15: Technical Guarantee & Compliance (技术保障与合规承诺) */
    .guarantee-section {
      background: var(--white);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }

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

    .guarantee-box {
      padding: 24px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      background: #FAFAFA;
    }

    .guarantee-code {
      font-size: 0.75rem;
      font-family: monospace;
      color: var(--accent-deep);
      margin-bottom: 8px;
      display: block;
    }

    .guarantee-box h3 {
      font-size: 1.1rem;
      color: var(--primary);
      margin-bottom: 8px;
    }

    .guarantee-box p {
      font-size: 0.85rem;
      color: var(--muted);
      line-height: 1.6;
    }

    /* Section 16: Bottom Onboarding CTA (全周期开通与咨询入口) */
    .onboarding-cta-section {
      background: #090D16;
      color: #FFF;
      position: relative;
      padding: 100px 0;
    }

    .cta-card-box {
      background: #111827;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 8px;
      padding: 48px;
      max-width: 960px;
      margin: 0 auto;
    }

    .cta-flex {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 40px;
      align-items: center;
    }

    .cta-text-side h2 {
      font-size: 2.1rem;
      font-weight: 700;
      color: #FFF;
      margin-bottom: 16px;
      line-height: 1.3;
    }

    .cta-text-side p {
      font-size: 0.98rem;
      color: #94A3B8;
      line-height: 1.8;
      margin-bottom: 24px;
    }

    .cta-sla-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 0.82rem;
      color: #38BDF8;
      background: rgba(14, 165, 233, 0.12);
      padding: 6px 12px;
      border-radius: var(--radius-sm);
    }

    .cta-form-side {
      background: rgba(255, 255, 255, 0.03);
      padding: 24px;
      border-radius: var(--radius);
      border: 1px solid rgba(255,255,255,0.06);
    }

    .form-group {
      margin-bottom: 14px;
    }

    .form-input {
      width: 100%;
      padding: 12px 14px;
      background: #1F2937;
      border: 1px solid #374151;
      border-radius: var(--radius-sm);
      color: #FFF;
      font-size: 0.875rem;
    }

    .form-input:focus {
      outline: none;
      border-color: var(--accent);
    }

    .form-submit-btn {
      width: 100%;
      padding: 13px;
      background: #2563EB;
      color: #FFF;
      border: none;
      border-radius: var(--radius-sm);
      font-weight: 600;
      font-size: 0.95rem;
      cursor: pointer;
      transition: var(--transition);
    }

    .form-submit-btn:hover {
      background: #1D4ED8;
    }

    /* Footer */
    .site-footer {
      background: #06090F;
      color: #94A3B8;
      font-size: 0.875rem;
      padding-top: 80px;
      border-top: 1px solid #1E293B;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.9fr 0.9fr 1.2fr;
      gap: 40px;
      margin-bottom: 60px;
    }

    .footer-col h4 {
      color: #F8FAFC;
      font-size: 0.98rem;
      margin-bottom: 20px;
      font-weight: 600;
    }

    .footer-col p {
      line-height: 1.75;
      color: #64748B;
      margin-bottom: 16px;
    }

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

    .footer-links a:hover {
      color: #38BDF8;
    }

    .footer-bottom-bar {
      border-top: 1px solid rgba(255,255,255,0.08);
      padding: 24px 0;
      font-size: 0.8125rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    .footer-legal-links {
      display: flex;
      gap: 20px;
    }

    /* Responsive Queries */
    @media (max-width: 1024px) {
      .hero-grid, .arch-overview-grid, .story-grid, .cta-flex {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .advantages-grid, .suites-grid, .routing-grid, .tier-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .topo-flow-wrapper, .scenario-grid, .metrics-grid, .guarantee-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .top-meta-bar {
        display: none;
      }
      .main-nav {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-h1 {
        font-size: 2.3rem;
      }
      .section-h2 {
        font-size: 1.85rem;
      }
      .audience-grid, .fit-contrast-grid, .advantages-grid, .suites-grid, .routing-grid, .tier-grid, .testimonials-grid, .news-grid, .topo-flow-wrapper, .scenario-grid, .metrics-grid, .guarantee-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom-bar {
        flex-direction: column;
        text-align: center;
      }
      .hero-rights-matrix {
        grid-template-columns: 1fr;
      }
      .metric-item {
        border-right: none;
        border-bottom: 1px solid rgba(255,255,255,0.1);
        padding-bottom: 20px;
      }
    }