/* roulang page: index */
:root {
      --bg-dark: #0A0D14;
      --bg-deep: #05070B;
      --bg-card: #141923;
      --bg-card-hover: #1A2232;
      --bg-alt: #0F1420;
      --primary: #10B981;
      --primary-hover: #059669;
      --primary-glow: rgba(16, 185, 129, 0.25);
      --secondary: #06B6D4;
      --text-white: #FFFFFF;
      --text-primary: #F1F5F9;
      --text-secondary: #CBD5E1;
      --text-muted: #94A3B8;
      --border-dark: rgba(255, 255, 255, 0.08);
      --border-glow: rgba(16, 185, 129, 0.4);
      --accent-red: #EF4444;
      --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
      -webkit-font-smoothing: antialiased;
    }

    html {
      scroll-behavior: smooth;
      background-color: var(--bg-dark);
      color: var(--text-primary);
      font-family: var(--font-sans);
    }

    body {
      overflow-x: hidden;
      line-height: 1.7;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.25s ease;
    }

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

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

    /* 顶部通栏 */
    .top-bar {
      background-color: #030508;
      border-bottom: 1px solid var(--border-dark);
      font-size: 13px;
      color: var(--text-muted);
      padding: 8px 0;
    }
    .top-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-bar-tags {
      display: flex;
      gap: 16px;
    }
    .top-bar-tags span {
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }
    .top-bar-dot {
      width: 6px;
      height: 6px;
      background: var(--primary);
      border-radius: 50%;
    }

    /* 主导航 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(10, 13, 20, 0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-dark);
    }
    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 19px;
      font-weight: 800;
      letter-spacing: -0.02em;
      color: var(--text-white);
    }
    .brand-logo-icon {
      width: 36px;
      height: 36px;
      background: linear-gradient(135deg, var(--primary), var(--secondary));
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
      color: #000;
      font-size: 16px;
      box-shadow: 0 0 16px var(--primary-glow);
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-links a {
      color: var(--text-secondary);
      font-size: 14.5px;
      font-weight: 500;
    }
    .nav-links a:hover {
      color: var(--primary);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .btn-nav {
      background: var(--primary);
      color: #04130c;
      padding: 10px 20px;
      border-radius: 9999px;
      font-size: 14px;
      font-weight: 700;
      box-shadow: 0 4px 18px var(--primary-glow);
    }
    .btn-nav:hover {
      background: #34d399;
      transform: translateY(-1px);
    }

    /* 移动端汉堡按钮 */
    .menu-toggle {
      display: none;
      background: transparent;
      border: 1px solid var(--border-dark);
      color: var(--text-white);
      padding: 8px 12px;
      border-radius: 6px;
      font-size: 18px;
      cursor: pointer;
    }

    /* 核心视觉通用类 */
    .section-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: rgba(16, 185, 129, 0.1);
      border: 1px solid rgba(16, 185, 129, 0.25);
      color: var(--primary);
      font-size: 12px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      padding: 5px 14px;
      border-radius: 9999px;
      margin-bottom: 16px;
    }
    .section-title {
      font-size: 34px;
      font-weight: 800;
      line-height: 1.3;
      color: var(--text-white);
      margin-bottom: 16px;
      letter-spacing: -0.02em;
    }
    .section-desc {
      font-size: 16px;
      color: var(--text-secondary);
      max-width: 780px;
      line-height: 1.8;
      margin-bottom: 40px;
    }
    .text-center {
      text-align: center;
    }
    .text-center .section-desc {
      margin-left: auto;
      margin-right: auto;
    }

    /* 板块容器公用 */
    .content-section {
      padding: 96px 0;
      position: relative;
    }
    .section-alt {
      background-color: var(--bg-alt);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
    }

    /* 板块 1: 首屏 HERO */
    .hero-section {
      position: relative;
      padding: 90px 0 110px 0;
      background: radial-gradient(circle at 75% 20%, rgba(16, 185, 129, 0.12), transparent 50%),
                  radial-gradient(circle at 20% 80%, rgba(6, 182, 212, 0.08), transparent 40%),
                  var(--bg-dark);
      border-bottom: 1px solid var(--border-dark);
      overflow: hidden;
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 56px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 46px;
      font-weight: 900;
      line-height: 1.25;
      color: var(--text-white);
      margin-bottom: 22px;
      letter-spacing: -0.03em;
    }
    .hero-h1 span {
      background: linear-gradient(135deg, #10B981 0%, #38BDF8 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-intro {
      font-size: 16.5px;
      color: var(--text-secondary);
      line-height: 1.85;
      margin-bottom: 34px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 40px;
    }
    .btn-primary {
      background: var(--primary);
      color: #03140c;
      font-weight: 700;
      padding: 15px 32px;
      border-radius: 10px;
      font-size: 15.5px;
      display: inline-flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 8px 24px var(--primary-glow);
    }
    .btn-primary:hover {
      background: #34D399;
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-dark);
      color: var(--text-white);
      font-weight: 600;
      padding: 15px 30px;
      border-radius: 10px;
      font-size: 15.5px;
    }
    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: rgba(255, 255, 255, 0.2);
    }
    .hero-trust-bar {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
      padding-top: 24px;
      border-top: 1px solid var(--border-dark);
    }
    .trust-metric-item {
      display: flex;
      flex-direction: column;
    }
    .trust-metric-num {
      font-size: 20px;
      font-weight: 800;
      color: var(--text-white);
      letter-spacing: -0.01em;
    }
    .trust-metric-desc {
      font-size: 12.5px;
      color: var(--text-muted);
      margin-top: 2px;
    }

    .hero-visual-card {
      position: relative;
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 20px;
      padding: 18px;
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
    }
    .hero-visual-card img {
      border-radius: 12px;
      width: 100%;
      height: 380px;
      object-fit: cover;
    }
    .hero-visual-hud {
      position: absolute;
      bottom: 32px;
      left: 32px;
      right: 32px;
      background: rgba(10, 13, 20, 0.85);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(16, 185, 129, 0.3);
      border-radius: 12px;
      padding: 14px 18px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .hud-title {
      font-size: 13px;
      color: var(--text-muted);
    }
    .hud-val {
      font-size: 16px;
      font-weight: 700;
      color: var(--primary);
    }

    /* 板块 2: 运动表现痛点与认知分歧 */
    .pain-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .pain-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 16px;
      padding: 32px 28px;
      position: relative;
      transition: all 0.3s ease;
    }
    .pain-card:hover {
      border-color: rgba(239, 68, 68, 0.4);
      transform: translateY(-4px);
    }
    .pain-indicator {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 38px;
      height: 38px;
      background: rgba(239, 68, 68, 0.12);
      border: 1px solid rgba(239, 68, 68, 0.3);
      color: var(--accent-red);
      font-weight: 800;
      border-radius: 10px;
      font-size: 16px;
      margin-bottom: 20px;
    }
    .pain-card h3 {
      font-size: 19px;
      color: var(--text-white);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .pain-card p {
      font-size: 14.5px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* 板块 3: 架构体系 */
    .arch-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .arch-media img {
      border-radius: 16px;
      border: 1px solid var(--border-dark);
      width: 100%;
      height: 440px;
      object-fit: cover;
    }
    .arch-specs-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .spec-item {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 12px;
      padding: 20px 24px;
      border-left: 4px solid var(--secondary);
    }
    .spec-title-bar {
      display: flex;
      justify-content: space-between;
      margin-bottom: 6px;
    }
    .spec-name {
      font-weight: 700;
      font-size: 16px;
      color: var(--text-white);
    }
    .spec-param {
      font-weight: 800;
      color: var(--primary);
      font-size: 14px;
      background: rgba(16, 185, 129, 0.1);
      padding: 2px 8px;
      border-radius: 4px;
    }
    .spec-item p {
      font-size: 13.5px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 4: 六宫格技术优势 */
    .grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 16px;
      padding: 30px;
      transition: all 0.3s ease;
    }
    .adv-card:hover {
      border-color: var(--border-glow);
      background: var(--bg-card-hover);
      transform: translateY(-4px);
      box-shadow: 0 12px 32px rgba(16, 185, 129, 0.1);
    }
    .adv-icon {
      font-size: 24px;
      margin-bottom: 18px;
      display: inline-block;
      width: 48px;
      height: 48px;
      line-height: 48px;
      text-align: center;
      background: rgba(16, 185, 129, 0.08);
      border-radius: 12px;
      border: 1px solid rgba(16, 185, 129, 0.2);
    }
    .adv-card h3 {
      font-size: 18px;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 10px;
    }
    .adv-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    /* 板块 5: 核心硬件与分析套件 */
    .product-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
    }
    .product-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 18px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .product-card:hover {
      border-color: var(--secondary);
      transform: translateY(-5px);
    }
    .product-img-wrap {
      height: 220px;
      overflow: hidden;
      position: relative;
    }
    .product-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }
    .product-card:hover .product-img-wrap img {
      transform: scale(1.05);
    }
    .product-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .product-tag {
      font-size: 12px;
      color: var(--secondary);
      font-weight: 700;
      margin-bottom: 8px;
    }
    .product-content h3 {
      font-size: 18px;
      color: var(--text-white);
      margin-bottom: 12px;
    }
    .product-content p {
      font-size: 13.5px;
      color: var(--text-secondary);
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .product-specs-list {
      list-style: none;
      font-size: 12.5px;
      color: var(--text-muted);
      border-top: 1px solid var(--border-dark);
      padding-top: 14px;
      margin-bottom: 20px;
    }
    .product-specs-list li {
      margin-bottom: 6px;
      display: flex;
      justify-content: space-between;
    }
    .btn-product {
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border-dark);
      color: var(--text-white);
      text-align: center;
      padding: 10px;
      border-radius: 8px;
      font-size: 13.5px;
      font-weight: 600;
    }
    .btn-product:hover {
      background: var(--primary);
      color: #04130c;
      border-color: var(--primary);
    }

    /* 板块 6: 极客动力学实验室 */
    .lab-section {
      background-color: var(--bg-deep);
      background-image: 
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
      background-size: 40px 40px;
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 100px 0;
    }
    .lab-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 48px;
      align-items: center;
    }
    .lab-terminal {
      background: #090C12;
      border: 1px solid rgba(6, 182, 212, 0.25);
      border-radius: 16px;
      padding: 24px;
      box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
      font-family: monospace;
    }
    .terminal-header {
      display: flex;
      gap: 6px;
      margin-bottom: 16px;
      border-bottom: 1px solid rgba(255,255,255,0.05);
      padding-bottom: 10px;
    }
    .terminal-dot {
      width: 10px;
      height: 10px;
      border-radius: 50%;
      background: #334155;
    }
    .terminal-body {
      color: #38BDF8;
      font-size: 13px;
      line-height: 1.8;
    }
    .terminal-body .keyword { color: #F43F5E; }
    .terminal-body .value { color: var(--primary); }
    .terminal-body .comment { color: #64748B; }

    /* 板块 7: 四步工作流 */
    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
    }
    .flow-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 16px;
      padding: 28px 22px;
      position: relative;
    }
    .flow-num {
      font-size: 32px;
      font-weight: 900;
      color: rgba(255, 255, 255, 0.08);
      margin-bottom: 12px;
      line-height: 1;
    }
    .flow-card h3 {
      font-size: 17px;
      color: var(--text-white);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .flow-card p {
      font-size: 13.5px;
      color: var(--text-secondary);
      line-height: 1.65;
    }

    /* 板块 8: 核心效能数据看板 */
    .metrics-section {
      background: linear-gradient(180deg, #0A0D14 0%, #111726 100%);
      border-top: 1px solid var(--border-dark);
      border-bottom: 1px solid var(--border-dark);
      padding: 70px 0;
    }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 32px;
      text-align: center;
    }
    .metric-val {
      font-size: 52px;
      font-weight: 900;
      line-height: 1.1;
      margin-bottom: 8px;
      background: linear-gradient(135deg, #10B981, #06B6D4);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      letter-spacing: -0.02em;
    }
    .metric-label {
      font-size: 16px;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 6px;
    }
    .metric-sub {
      font-size: 13px;
      color: var(--text-muted);
    }

    /* 板块 9: 竞技场与俱乐部故事 */
    .story-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 20px;
      overflow: hidden;
      display: grid;
      grid-template-columns: 0.9fr 1.1fr;
    }
    .story-img-col img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      min-height: 380px;
    }
    .story-content-col {
      padding: 44px;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .quote-box {
      font-size: 17px;
      color: var(--text-primary);
      font-style: italic;
      line-height: 1.8;
      margin-bottom: 24px;
      position: relative;
    }
    .quote-author {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-white);
    }
    .quote-title {
      font-size: 13px;
      color: var(--secondary);
      margin-top: 4px;
    }
    .story-diff-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 24px;
      padding-top: 20px;
      border-top: 1px solid var(--border-dark);
    }
    .diff-item {
      background: rgba(0,0,0,0.25);
      padding: 12px 16px;
      border-radius: 8px;
      font-size: 13px;
    }
    .diff-title {
      color: var(--text-muted);margin-bottom: 4px;
    }
    .diff-val {
      font-weight: 700;
      color: var(--primary);
    }

    /* 板块 10: 梯队与人群方案 */
    .persona-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .persona-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 16px;
      padding: 34px 28px;
      display: flex;
      flex-direction: column;
      position: relative;
    }
    .persona-card.featured {
      border-color: var(--primary);
      box-shadow: 0 0 30px var(--primary-glow);
    }
    .persona-badge {
      display: inline-block;
      align-self: flex-start;
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 6px;
      background: rgba(255,255,255,0.08);
      color: var(--text-white);
      margin-bottom: 16px;
    }
    .persona-card.featured .persona-badge {
      background: var(--primary);
      color: #03140c;
      font-weight: 700;
    }
    .persona-card h3 {
      font-size: 20px;
      color: var(--text-white);
      margin-bottom: 12px;
    }
    .persona-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .persona-features {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
      margin-bottom: 28px;
      flex-grow: 1;
    }
    .persona-features li {
      font-size: 13.5px;
      color: var(--text-muted);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .persona-features li::before {
      content: "✓";
      color: var(--primary);
      font-weight: bold;
    }

    /* 板块 11: 深度行业资讯 */
    .insights-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .insight-card {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 16px;
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
    }
    .insight-card:hover {
      border-color: var(--secondary);
      transform: translateY(-4px);
    }
    .insight-card-img {
      height: 190px;
      overflow: hidden;
    }
    .insight-card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .insight-card-body {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .insight-meta {
      font-size: 12.5px;
      color: var(--secondary);
      margin-bottom: 10px;
      display: flex;
      justify-content: space-between;
    }
    .insight-card h3 {
      font-size: 17.5px;
      color: var(--text-white);
      line-height: 1.5;
      margin-bottom: 12px;
    }
    .insight-card p {
      font-size: 13.5px;
      color: var(--text-secondary);
      line-height: 1.65;
      margin-bottom: 20px;
      flex-grow: 1;
    }
    .insight-link {
      font-size: 13.5px;
      color: var(--primary);
      font-weight: 700;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块 12: FAQ 手风琴 */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-card);
      border: 1px solid var(--border-dark);
      border-radius: 12px;
      overflow: hidden;
      transition: border-color 0.25s ease;
    }
    .faq-item[open] {
      border-color: var(--primary);
    }
    .faq-item summary {
      padding: 20px 24px;
      font-size: 16.5px;
      font-weight: 700;
      color: var(--text-white);
      cursor: pointer;
      list-style: none;
      display: flex;
      justify-content: space-between;
      align-items: center;
      user-select: none;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-icon-arrow {
      width: 18px;
      height: 18px;
      fill: none;
      stroke: var(--primary);
      stroke-width: 2.5;
      stroke-linecap: round;
      stroke-linejoin: round;
      transition: transform 0.25s ease;
    }
    .faq-item[open] .faq-icon-arrow {
      transform: rotate(180deg);
    }
    .faq-content {
      padding: 0 24px 22px 24px;
      font-size: 14.5px;
      color: var(--text-secondary);
      line-height: 1.8;
      border-top: 1px solid rgba(255,255,255,0.04);
      margin-top: 6px;
      padding-top: 16px;
    }

    /* 板块 13: 咨询与预约 CTA */
    .cta-wrapper {
      background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.15), transparent 60%),
                  radial-gradient(circle at bottom left, rgba(6, 182, 212, 0.1), transparent 60%),
                  #101522;
      border: 1px solid rgba(16, 185, 129, 0.3);
      border-radius: 24px;
      padding: 56px 48px;
      box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    }
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1.1fr;
      gap: 48px;
      align-items: center;
    }
    .cta-info h2 {
      font-size: 32px;
      font-weight: 800;
      color: var(--text-white);
      line-height: 1.3;
      margin-bottom: 16px;
    }
    .cta-info p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
      margin-bottom: 24px;
    }
    .cta-trust-items {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .cta-trust-item {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 13.5px;
      color: var(--text-muted);
    }
    .cta-form {
      background: rgba(10, 13, 20, 0.7);
      border: 1px solid var(--border-dark);
      border-radius: 16px;
      padding: 32px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .form-group {
      display: flex;
      flex-direction: column;
      gap: 6px;
    }
    .form-group label {
      font-size: 13px;
      color: var(--text-secondary);
      font-weight: 600;
    }
    .form-control {
      background: #141923;
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: 8px;
      padding: 12px 14px;
      color: var(--text-white);
      font-size: 14px;
      outline: none;
      transition: border-color 0.25s ease;
    }
    .form-control:focus {
      border-color: var(--primary);
    }
    .btn-submit {
      background: var(--primary);
      color: #04130c;
      font-size: 15px;
      font-weight: 700;
      padding: 14px;
      border-radius: 8px;
      border: none;
      cursor: pointer;
      margin-top: 8px;
      transition: all 0.25s ease;
    }
    .btn-submit:hover {
      background: #34D399;
      transform: translateY(-2px);
    }
    .form-terms {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
      text-align: center;
    }

    /* 页脚标准体系 */
    .site-footer {
      background-color: #05070B;
      border-top: 1px solid var(--border-dark);
      padding: 70px 0 30px 0;
      font-size: 13.5px;
      color: var(--text-muted);
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 40px;
      margin-bottom: 50px;
    }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 700;
      color: var(--text-white);
      margin-bottom: 18px;
      letter-spacing: -0.01em;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .footer-contact-item {
      margin-bottom: 10px;
      line-height: 1.6;
    }
    .footer-contact-item strong {
      color: var(--text-secondary);
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 12.5px;
    }
    .footer-bottom-links {
      display: flex;
      gap: 20px;
    }

    /* 移动端抽屉与响应式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .arch-wrapper, .lab-grid, .story-card, .cta-grid {
        grid-template-columns: 1fr;
      }
      .pain-grid, .grid-6, .product-grid, .persona-grid, .insights-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .flow-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .metrics-row {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }

    @media (max-width: 768px) {
      .content-section {
        padding: 64px 0;
      }
      .menu-toggle {
        display: block;
      }
      .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #0A0D14;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-dark);
        gap: 18px;
      }
      .nav-links.active {
        display: flex;
      }
      .header-actions .btn-nav {
        display: none;
      }
      .hero-h1 {
        font-size: 32px;
      }
      .section-title {
        font-size: 26px;
      }
      .pain-grid, .grid-6, .product-grid, .flow-grid, .persona-grid, .insights-grid, .metrics-row, .footer-grid {
        grid-template-columns: 1fr;
      }
      .story-card {
        grid-template-columns: 1fr;
      }
      .story-content-col {
        padding: 28px 20px;
      }
      .cta-wrapper {
        padding: 32px 20px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }