/* roulang page: index */
:root {
      --color-dark: #0C0E12;
      --color-dark-panel: #12151B;
      --color-dark-border: rgba(255, 255, 255, 0.12);
      --color-accent: #00E599;
      --color-accent-hover: #00C282;
      --color-warn: #FF5722;
      --color-bg-light: #F8FAFC;
      --color-card-bg: #FFFFFF;
      --color-border: rgba(12, 14, 18, 0.08);
      --color-text-primary: #0C0E12;
      --color-text-secondary: #4B5563;
      --color-text-muted: #9CA3AF;
      --radius-sm: 4px;
      --radius-md: 6px;
      --shadow-sm: 0 2px 8px rgba(12, 14, 18, 0.04);
      --shadow-hover: 0 12px 32px rgba(12, 14, 18, 0.08);
      --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
      --font-mono: "JetBrains Mono", "Roboto Mono", Consolas, monospace;
      --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

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

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

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

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

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

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

    .section-spacing {
      padding-top: 100px;
      padding-bottom: 100px;
    }

    .section-header {
      margin-bottom: 56px;
    }

    .section-header.text-center {
      text-align: center;
      max-width: 820px;
      margin-left: auto;
      margin-right: auto;
    }

    .section-tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      font-family: var(--font-mono);
      font-size: 0.8125rem;
      letter-spacing: 0.08em;
      text-transform: uppercase;
      color: var(--color-dark);
      background: rgba(0, 229, 153, 0.15);
      border: 1px solid rgba(0, 229, 153, 0.3);
      padding: 4px 12px;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      font-weight: 600;
    }

    .section-tag .pulse-dot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--color-accent);
      box-shadow: 0 0 8px var(--color-accent);
      animation: pulse 1.6s infinite ease-in-out;
    }

    @keyframes pulse {
      0%, 100% { opacity: 0.4; transform: scale(0.9); }
      50% { opacity: 1; transform: scale(1.2); }
    }

    .section-title {
      font-size: clamp(1.75rem, 3.2vw, 2.5rem);
      font-weight: 700;
      line-height: 1.28;
      letter-spacing: -0.02em;
      margin-bottom: 18px;
      color: var(--color-dark);
    }

    .section-desc {
      font-size: 1.0625rem;
      color: var(--color-text-secondary);
      line-height: 1.75;
    }

    /* 顶部双行导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 999;
      width: 100%;
      background: rgba(255, 255, 255, 0.94);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--color-border);
    }

    .top-meta-bar {
      background: var(--color-dark);
      color: #D1D5DB;
      font-size: 0.8125rem;
      padding: 6px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .top-meta-wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .top-meta-links {
      display: flex;
      gap: 20px;
    }

    .main-nav-bar {
      height: 74px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      font-size: 1.25rem;
      letter-spacing: -0.01em;
      color: var(--color-dark);
    }

    .brand-mark {
      width: 32px;
      height: 32px;
      background: var(--color-dark);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--color-accent);
      font-family: var(--font-mono);
      font-weight: 800;
      border: 1px solid var(--color-accent);
    }

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

    .nav-links a {
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      font-weight: 500;
      padding: 6px 0;
      position: relative;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--color-dark);
    }

    .nav-links a.active::after {
      content: "";
      position: absolute;
      bottom: -4px;
      left: 0;
      right: 0;
      height: 2px;
      background: var(--color-accent);
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 22px;
      background: var(--color-dark);
      color: #FFFFFF;
      font-size: 0.875rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      border: 1px solid var(--color-dark);
    }

    .nav-cta:hover {
      background: var(--color-accent);
      color: var(--color-dark);
      border-color: var(--color-accent);
      transform: translateY(-1px);
    }

    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      cursor: pointer;
      color: var(--color-dark);
    }

    /* 按钮规范 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 26px;
      font-size: 0.9375rem;
      font-weight: 600;
      border-radius: var(--radius-sm);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      text-align: center;
    }

    .btn-primary {
      background: var(--color-accent);
      color: var(--color-dark);
      border-color: var(--color-accent);
    }

    .btn-primary:hover {
      background: var(--color-accent-hover);
      border-color: var(--color-accent-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(0, 229, 153, 0.25);
    }

    .btn-dark {
      background: var(--color-dark);
      color: #FFFFFF;
      border-color: var(--color-dark);
    }

    .btn-dark:hover {
      background: #1F242D;
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(12, 14, 18, 0.2);
    }

    .btn-outline {
      background: transparent;
      color: var(--color-dark);
      border-color: rgba(12, 14, 18, 0.2);
    }

    .btn-outline:hover {
      border-color: var(--color-dark);
      background: rgba(12, 14, 18, 0.03);
    }

    /* 01. 首屏 Banner 轮播交互区 */
    .hero-section {
      position: relative;
      background-color: var(--color-dark);
      color: #FFFFFF;
      padding: 90px 0 100px;
      overflow: hidden;
      background-image: linear-gradient(135deg, rgba(12, 14, 18, 0.95) 0%, rgba(18, 21, 27, 0.88) 100%), url('/assets/images/14da6037b3e5d0bf.webp');
      background-size: cover;
      background-position: center;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
    }

    .hero-content h1 {
      font-size: clamp(2.3rem, 4.4vw, 3.6rem);
      line-height: 1.18;
      font-weight: 800;
      letter-spacing: -0.025em;
      margin-bottom: 24px;
    }

    .hero-content h1 span {
      color: var(--color-accent);
    }

    .hero-lead {
      font-size: 1.125rem;
      color: #9CA3AF;
      line-height: 1.8;
      margin-bottom: 36px;
    }

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

    .hero-meta-badges {
      display: flex;
      gap: 24px;
      padding-top: 24px;
      border-top: 1px solid var(--color-dark-border);
      font-family: var(--font-mono);
      font-size: 0.8125rem;
      color: #9CA3AF;
    }

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

    .hero-meta-item .meta-val {
      color: var(--color-accent);
      font-weight: 700;
    }

    .hero-interactive-card {
      background: rgba(18, 21, 27, 0.9);
      border: 1px solid var(--color-dark-border);
      border-radius: var(--radius-md);
      padding: 32px;
      backdrop-filter: blur(16px);
      box-shadow: 0 20px 48px rgba(0, 0, 0, 0.4);
    }

    .card-terminal-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding-bottom: 16px;
      border-bottom: 1px solid var(--color-dark-border);
      margin-bottom: 20px;
      font-family: var(--font-mono);
      font-size: 0.8125rem;
      color: #9CA3AF;
    }

    .terminal-dots {
      display: flex;
      gap: 6px;
    }

    .terminal-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.2);
    }

    .terminal-dot.active {
      background: var(--color-accent);
    }

    .poll-selector label {
      display: block;
      font-size: 0.875rem;
      font-weight: 600;
      color: #E5E7EB;
      margin-bottom: 8px;
    }

    .poll-selector select {
      width: 100%;
      padding: 12px 14px;
      background: #0C0E12;
      border: 1px solid var(--color-dark-border);
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 0.9375rem;
      outline: none;
      margin-bottom: 20px;
    }

    .live-stream-preview {
      background: #0C0E12;
      border: 1px solid var(--color-dark-border);
      border-radius: var(--radius-sm);
      padding: 16px;
      margin-bottom: 20px;
    }

    .wave-line-sim {
      height: 52px;
      display: flex;
      align-items: flex-end;
      gap: 4px;
      padding-top: 8px;
    }

    .wave-bar {
      flex: 1;
      background: rgba(0, 229, 153, 0.4);
      border-radius: 2px 2px 0 0;
      transition: height 0.4s ease;
    }

    .wave-bar:nth-child(even) {
      background: var(--color-accent);
    }

    .wave-bar:nth-child(5n) {
      background: var(--color-warn);
    }

    /* 02. 痛点诊断区 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .pain-card {
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      padding: 30px 24px;
      position: relative;
      transition: var(--transition);
    }

    .pain-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(12, 14, 18, 0.2);
    }

    .pain-card-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 18px;
    }

    .pain-indicator {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-warn);
      box-shadow: 0 0 0 4px rgba(255, 87, 34, 0.15);
    }

    .pain-code {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      font-weight: 700;
      color: var(--color-text-muted);
    }

    .pain-card h3 {
      font-size: 1.1875rem;
      font-weight: 700;
      margin-bottom: 12px;
      line-height: 1.4;
    }

    .pain-card p {
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      line-height: 1.65;
    }

    .pain-meter {
      margin-top: 24px;
      padding-top: 16px;
      border-top: 1px solid var(--color-border);
      display: flex;
      justify-content: space-between;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--color-text-muted);
    }

    /* 03. 平台架构与核心检测介绍区 */
    .arch-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 64px;
      align-items: center;
    }

    .arch-lead-list {
      list-style: none;
      margin-top: 28px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .arch-lead-item {
      display: flex;
      gap: 16px;
    }

    .arch-lead-num {
      flex-shrink: 0;
      width: 32px;
      height: 32px;
      background: var(--color-dark);
      color: var(--color-accent);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-mono);
      font-weight: 700;
      font-size: 0.875rem;
    }

    .arch-lead-text h4 {
      font-size: 1.0625rem;
      font-weight: 700;
      margin-bottom: 6px;
    }

    .arch-lead-text p {
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      line-height: 1.6;
    }

    .arch-media-card {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }

    .arch-media-caption {
      padding: 20px 24px;
      background: #FFFFFF;
      border-top: 1px solid var(--color-border);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 04. 六维核心优势 */
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .feature-card {
      background: var(--color-card-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      padding: 32px 28px;
      position: relative;
      transition: var(--transition);
    }

    .feature-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: rgba(12, 14, 18, 0.25);
    }

    .feature-head {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 20px;
    }

    .feature-tag-id {
      font-family: var(--font-mono);
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--color-accent);
      background: var(--color-dark);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
    }

    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .feature-card p {
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      line-height: 1.65;
    }

    /* 05. 热门硬件与分析终端区 */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

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

    .product-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-4px);
    }

    .product-thumb {
      height: 220px;
      background: #E5E7EB;
      overflow: hidden;
      position: relative;
    }

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

    .product-card:hover .product-thumb img {
      transform: scale(1.04);
    }

    .product-badge-abs {
      position: absolute;
      top: 14px;
      left: 14px;
      background: var(--color-dark);
      color: #FFFFFF;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
    }

    .product-body {
      padding: 28px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
    }

    .product-body h3 {
      font-size: 1.25rem;
      font-weight: 700;
      margin-bottom: 10px;
    }

    .product-body p {
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      margin-bottom: 20px;
      line-height: 1.6;
    }

    .product-specs {
      list-style: none;
      margin-top: auto;
      margin-bottom: 24px;
      border-top: 1px solid var(--color-border);
      padding-top: 16px;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .product-specs li {
      display: flex;
      justify-content: space-between;
      font-size: 0.875rem;
    }

    .product-specs span:first-child {
      color: var(--color-text-muted);
    }

    .product-specs span:last-child {
      font-family: var(--font-mono);
      font-weight: 600;
      color: var(--color-dark);
    }

    /* 06. 深色反差理念区 */
    .dark-academic-section {
      background: var(--color-dark);
      color: #FFFFFF;
      padding: 110px 0;
      border-top: 1px solid var(--color-dark-border);
      border-bottom: 1px solid var(--color-dark-border);
    }

    .academic-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 60px;
      align-items: center;
    }

    .academic-content h2 {
      font-size: clamp(2rem, 3.5vw, 2.8rem);
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 24px;
    }

    .academic-content p {
      font-size: 1.0625rem;
      color: #9CA3AF;
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .academic-points {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 16px;
      margin-bottom: 36px;
    }

    .academic-points li {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.9375rem;
      color: #E5E7EB;
    }

    .academic-bullet {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: var(--color-accent);
      margin-top: 10px;
      flex-shrink: 0;
    }

    .academic-visual {
      background: var(--color-dark-panel);
      border: 1px solid var(--color-dark-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      padding: 12px;
    }

    .academic-visual img {
      border-radius: var(--radius-sm);
      width: 100%;
    }

    /* 07. 多维执行步骤区 */
    .steps-timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }

    .steps-timeline::before {
      content: "";
      position: absolute;
      top: 40px;
      left: 10%;
      right: 10%;
      height: 2px;
      background: repeating-linear-gradient(90deg, var(--color-border), var(--color-border) 6px, transparent 6px, transparent 12px);
      z-index: 1;
    }

    .step-node {
      position: relative;
      z-index: 2;
      background: var(--color-bg-light);
      padding: 10px;
    }

    .step-circle {
      width: 64px;
      height: 64px;
      background: #FFFFFF;
      border: 2px solid var(--color-dark);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 24px;
      font-family: var(--font-mono);
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--color-dark);
      box-shadow: 0 4px 12px rgba(12, 14,18, 0.06);
      transition: var(--transition);
    }

    .step-node:hover .step-circle {
      background: var(--color-accent);
      border-color: var(--color-accent);
      transform: scale(1.08);
    }

    .step-node h3 {
      font-size: 1.125rem;
      font-weight: 700;
      margin-bottom: 12px;
    }

    .step-node p {
      font-size: 0.875rem;
      color: var(--color-text-secondary);
      line-height: 1.65;
    }

    /* 08. 成果数据条 */
    .metrics-bar-section {
      background: #FFFFFF;
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
      padding: 60px 0;
    }

    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
    }

    .metric-item {
      border-left: 2px solid var(--color-accent);
      padding-left: 24px;
    }

    .metric-tag {
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--color-text-muted);
      text-transform: uppercase;
      margin-bottom: 8px;
    }

    .metric-val {
      font-family: var(--font-mono);
      font-size: clamp(2.2rem, 3.8vw, 3.2rem);
      font-weight: 800;
      line-height: 1.1;
      color: var(--color-dark);
      margin-bottom: 6px;
    }

    .metric-desc {
      font-size: 0.875rem;
      color: var(--color-text-secondary);
    }

    /* 09. 用户故事区 */
    .case-story-card {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: grid;
      grid-template-columns: 1fr 1.2fr;
    }

    .case-story-media {
      background: #0C0E12;
      overflow: hidden;
    }

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

    .case-story-body {
      padding: 48px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }

    .case-badge {
      display: inline-block;
      align-self: flex-start;
      background: rgba(0, 229, 153, 0.15);
      color: var(--color-dark);
      font-size: 0.8125rem;
      font-weight: 700;
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
    }

    .case-story-body h3 {
      font-size: 1.75rem;
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 18px;
    }

    .case-story-body p {
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      line-height: 1.75;
      margin-bottom: 24px;
    }

    .case-radar-metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      padding-top: 24px;
      border-top: 1px solid var(--color-border);
    }

    .crm-item {
      font-family: var(--font-mono);
    }

    .crm-label {
      font-size: 0.75rem;
      color: var(--color-text-muted);
      margin-bottom: 4px;
    }

    .crm-value {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--color-dark);
    }

    /* 10. 客户证言区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

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

    .testi-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .testi-quote {
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      line-height: 1.8;
      margin-bottom: 28px;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--color-border);
      padding-top: 20px;
    }

    .testi-avatar-placeholder {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: var(--color-dark);
      color: var(--color-accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 0.875rem;
      flex-shrink: 0;
    }

    .testi-meta h4 {
      font-size: 0.9375rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .testi-meta p {
      font-size: 0.8125rem;
      color: var(--color-text-muted);
    }

    /* 11. 前沿资讯区 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      padding: 30px;
      display: flex;
      flex-direction: column;
      transition: var(--transition);
    }

    .news-card:hover {
      box-shadow: var(--shadow-hover);
      border-color: rgba(12, 14, 18, 0.2);
    }

    .news-meta {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 16px;
      font-family: var(--font-mono);
      font-size: 0.75rem;
      color: var(--color-text-muted);
    }

    .news-tag {
      background: rgba(12, 14, 18, 0.05);
      padding: 2px 8px;
      border-radius: var(--radius-sm);
      color: var(--color-dark);
      font-weight: 600;
    }

    .news-card h3 {
      font-size: 1.1875rem;
      font-weight: 700;
      line-height: 1.45;
      margin-bottom: 12px;
    }

    .news-card p {
      font-size: 0.875rem;
      color: var(--color-text-secondary);
      line-height: 1.65;
      margin-bottom: 24px;
      flex-grow: 1;
    }

    .news-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--color-dark);
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    .news-link:hover {
      color: var(--color-accent-hover);
    }

    /* 12. FAQ 手风琴区 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }

    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      margin-bottom: 16px;
      overflow: hidden;
      transition: var(--transition);
    }

    .faq-item:hover {
      border-color: rgba(12, 14, 18, 0.2);
    }

    .faq-question {
      padding: 22px 28px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-weight: 700;
      font-size: 1.0625rem;
      user-select: none;
    }

    .faq-icon {
      font-family: var(--font-mono);
      font-size: 1.25rem;
      transition: transform 0.25s ease;
      color: var(--color-text-muted);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
      background: #FAFAFA;
      padding: 0 28px;
      font-size: 0.9375rem;
      color: var(--color-text-secondary);
      line-height: 1.75;
      border-top: 0 solid var(--color-border);
    }

    .faq-item.active .faq-answer {
      max-height: 220px;
      padding: 20px 28px 24px;
      border-top: 1px solid var(--color-border);
    }

    .faq-item.active .faq-icon {
      transform: rotate(45deg);
      color: var(--color-accent-hover);
    }

    /* 转化表单区 */
    .conversion-section {
      background: #FFFFFF;
      border-top: 1px solid var(--color-border);
      padding: 100px 0;
    }

    .conv-box {
      background: var(--color-dark);
      color: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 60px;
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 60px;
      align-items: center;
    }

    .conv-info h2 {
      font-size: clamp(1.8rem, 3.2vw, 2.5rem);
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 20px;
    }

    .conv-info p {
      font-size: 1rem;
      color: #9CA3AF;
      line-height: 1.75;
      margin-bottom: 30px;
    }

    .conv-spec-list {
      display: flex;
      flex-direction: column;
      gap: 12px;
      font-size: 0.875rem;
      color: #E5E7EB;
    }

    .conv-form {
      background: #181B22;
      border: 1px solid var(--color-dark-border);
      padding: 32px;
      border-radius: var(--radius-sm);
    }

    .form-group {
      margin-bottom: 18px;
    }

    .form-group label {
      display: block;
      font-size: 0.8125rem;
      color: #D1D5DB;
      margin-bottom: 8px;
    }

    .form-control {
      width: 100%;
      padding: 12px 14px;
      background: #0C0E12;
      border: 1px solid var(--color-dark-border);
      border-radius: var(--radius-sm);
      color: #FFFFFF;
      font-size: 0.9375rem;
      outline: none;
      transition: var(--transition);
    }

    .form-control:focus {
      border-color: var(--color-accent);
    }

    /* 统一页脚 */
    .site-footer {
      background: var(--color-dark);
      color: #9CA3AF;
      padding: 80px 0 32px;
      border-top: 1px solid var(--color-dark-border);
      font-size: 0.875rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.6fr 1fr 1fr 1fr;
      gap: 48px;
      margin-bottom: 60px;
    }

    .footer-col h4 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }

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

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

    .footer-brand-p {
      margin-top: 16px;
      line-height: 1.7;
      max-width: 340px;
    }

    .footer-bottom {
      border-top: 1px solid var(--color-dark-border);
      padding-top: 30px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.8125rem;
      color: #6B7280;
    }

    .footer-bottom a {
      color: #9CA3AF;
    }

    /* 移动端响应式 */
    @media (max-width: 1024px) {
      .hero-grid,
      .arch-wrapper,
      .academic-grid,
      .conv-box {
        grid-template-columns: 1fr;
        gap: 40px;
      }

      .pain-grid,
      .steps-timeline,
      .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .features-grid,
      .products-grid,
      .testimonial-grid,
      .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .case-story-card {
        grid-template-columns: 1fr;
      }

      .case-story-media {
        height: 280px;
      }

      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .steps-timeline::before {
        display: none;
      }
    }

    @media (max-width: 768px) {
      .top-meta-bar {
        display: none;
      }

      .mobile-menu-btn {
        display: block;
      }

      .nav-links {
        display: none;
        position: absolute;
        top: 74px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-hover);
        gap: 16px;
      }

      .nav-links.active {
        display: flex;
      }

      .features-grid,
      .products-grid,
      .testimonial-grid,
      .news-grid,
      .pain-grid,
      .steps-timeline,
      .metrics-grid,
      .footer-grid {
        grid-template-columns: 1fr;
      }

      .conv-box {
        padding: 32px 20px;
      }

      .section-spacing {
        padding-top: 64px;
        padding-bottom: 64px;
      }

      .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
      }
    }