/* roulang page: index */
:root {
      --primary-gradient: linear-gradient(135deg, #4F46E5 0%, #7C3AED 100%);
      --accent-color: #06B6D4;
      --accent-green: #10B981;
      --accent-glow: rgba(79, 70, 229, 0.25);
      --dark-bg: #0F172A;
      --dark-card: #1E293B;
      --light-bg: #F8FAFC;
      --surface-white: #FFFFFF;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-light: #E2E8F0;
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
      --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
      --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
      --shadow-xl: 0 20px 35px -5px rgba(79, 70, 229, 0.15);
      --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
    }

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

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

    body {
      font-family: var(--font-stack);
      background-color: var(--light-bg);
      color: var(--text-body);
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

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

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

    ul, ol {
      list-style: none;
    }

    .container {
      width: 100%;
      max-width: 1240px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 顶部促销通告条 */
    .top-promo-bar {
      background: var(--primary-gradient);
      color: #FFFFFF;
      font-size: 0.875rem;
      padding: 8px 0;
      position: relative;
      z-index: 101;
    }
    .promo-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .promo-badge {
      background: rgba(255, 255, 255, 0.2);
      padding: 2px 8px;
      border-radius: 999px;
      font-weight: 600;
      margin-right: 8px;
      font-size: 0.75rem;
      letter-spacing: 0.5px;
    }
    .promo-links a {
      color: #E0E7FF;
      margin-left: 16px;
      font-size: 0.8rem;
    }
    .promo-links a:hover {
      color: #FFFFFF;
      text-decoration: underline;
    }

    /* 主导航 */
    .site-header {
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-light);
      position: sticky;
      top: 0;
      z-index: 100;
      box-shadow: 0 2px 10px rgba(0,0,0,0.02);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .site-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.5px;
    }
    .logo-badge {
      width: 36px;
      height: 36px;
      background: var(--primary-gradient);
      border-radius: var(--radius-sm);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #FFF;
      font-weight: 900;
      font-size: 1rem;
      box-shadow: 0 4px 10px rgba(124, 58, 237, 0.3);
    }
    .nav-menu {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-link {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--text-body);
      position: relative;
    }
    .nav-link:hover, .nav-link.active {
      color: #4F46E5;
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }
    .icon-action-btn {
      width: 38px;
      height: 38px;
      border-radius: 50%;
      border: 1px solid var(--border-light);
      background: #FFFFFF;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      color: var(--text-muted);
      transition: all 0.2s;
    }
    .icon-action-btn:hover {
      color: #4F46E5;
      border-color: #4F46E5;
      background: #F5F3FF;
    }
    .btn-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.925rem;
      background: var(--primary-gradient);
      color: #FFFFFF;
      border: none;
      cursor: pointer;
      box-shadow: 0 6px 16px rgba(79, 70, 229, 0.25);
      transition: transform 0.2s ease, box-shadow 0.2s ease;
    }
    .btn-cta:hover {
      transform: translateY(-2px);
      box-shadow: 0 10px 24px rgba(79, 70, 229, 0.35);
    }
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 10px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.925rem;
      background: #FFFFFF;
      color: var(--text-main);
      border: 1px solid var(--border-light);
      cursor: pointer;
      transition: all 0.2s ease;
    }
    .btn-secondary:hover {
      border-color: #4F46E5;
      color: #4F46E5;
      background: #F8FAFC;
    }

    /* 移动端汉堡菜单 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      cursor: pointer;
      padding: 8px;
    }
    .mobile-toggle span {
      display: block;
      width: 24px;
      height: 2px;
      background: var(--text-main);
      margin: 5px 0;
      transition: 0.3s;
    }

    /* 板块共有规范 */
    .section-py {
      padding: 88px 0;
      position: relative;
    }
    .section-header {
      margin-bottom: 48px;
    }
    .section-header.text-center {
      text-align: center;
      max-width: 760px;
      margin-left: auto;
      margin-right: auto;
    }
    .section-tag {
      display: inline-block;
      padding: 4px 14px;
      background: #EEF2FF;
      color: #4F46E5;
      font-size: 0.8rem;
      font-weight: 700;
      border-radius: 999px;
      margin-bottom: 14px;
      letter-spacing: 0.5px;
      text-transform: uppercase;
    }
    .section-title {
      font-size: 2.15rem;
      font-weight: 800;
      color: var(--text-main);
      line-height: 1.3;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* 板块一：Hero */
    #hero {
      padding: 70px 0 90px;
      background: radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.08) 0%, rgba(248, 250, 252, 0) 60%), #F8FAFC;
      border-bottom: 1px solid var(--border-light);
    }
    .hero-grid {
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 48px;
      align-items: center;
    }
    .hero-h1 {
      font-size: 2.85rem;
      font-weight: 800;
      line-height: 1.25;
      color: var(--text-main);
      margin-bottom: 20px;
      letter-spacing: -1px;
    }
    .hero-h1 span {
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-lead {
      font-size: 1.125rem;
      color: var(--text-body);
      line-height: 1.8;
      margin-bottom: 32px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      margin-bottom: 40px;
      flex-wrap: wrap;
    }
    .hero-icon-matrix {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      border-top: 1px solid var(--border-light);
      padding-top: 28px;
    }
    .matrix-item {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }
    .matrix-title {
      font-weight: 700;
      font-size: 0.95rem;
      color: var(--text-main);
    }
    .matrix-desc {
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    .hero-banner-visual {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-xl);
      background: var(--dark-bg);
      border: 1px solid rgba(255,255,255,0.1);
    }
    .hero-banner-visual img {
      width: 100%;
      height: 380px;
      object-fit: cover;
      opacity: 0.88;
      transition: transform 0.5s ease;
    }
    .hero-banner-visual:hover img {
      transform: scale(1.02);
    }
    .hero-overlay-tag {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(10px);
      padding: 14px 20px;
      border-radius: var(--radius-md);
      border: 1px solid rgba(255, 255, 255, 0.15);
      color: #FFF;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.85rem;
    }

    /* 板块二：产品与解决方案 */
    #platform-intro {
      background: #FFFFFF;
    }
    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }
    .intro-visual {
      position: relative;
    }
    .intro-visual img {
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-md);
      width: 100%;
      height: 420px;
      object-fit: cover;
    }
    .param-float-card {
      position: absolute;
      bottom: -24px;
      right: -24px;
      background: #FFFFFF;
      padding: 20px 24px;
      border-radius: var(--radius-md);
      box-shadow: 0 15px 30px rgba(0,0,0,0.1);
      border: 1px solid var(--border-light);
      max-width: 260px;
    }
    .param-value {
      font-size: 1.75rem;
      font-weight: 800;
      color: var(--accent-green);
      font-family: monospace;
    }
    .param-label {
      font-size: 0.825rem;
      color: var(--text-muted);
      margin-top: 4px;
    }
    .feature-point-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
      margin-top: 28px;
    }
    .feature-point-item {
      display: flex;
      gap: 16px;
    }
    .point-dot {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: #EEF2FF;
      color: #4F46E5;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: bold;
      flex-shrink: 0;
      font-size: 0.85rem;
    }

    /* 板块三：核心技术网格 6 张大卡 */
    #core-features {
      background: var(--light-bg);
    }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .feature-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 32px 28px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
    }
    .feature-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 4px;
      background: var(--primary-gradient);
      opacity: 0;
      transition: opacity 0.3s ease;
    }
    .feature-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-md);
      border-color: #C7D2FE;
    }
    .feature-card:hover::before {
      opacity: 1;
    }
    .card-icon-box {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: #EEF2FF;
      color: #4F46E5;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.4rem;
      margin-bottom: 20px;
      font-weight: bold;
    }
    .feature-card h3 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .feature-card p {
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.65;
    }

    /* 板块四：热门模版 */
    #templates {
      background: #FFFFFF;
    }
    .templates-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .template-card {
      border-radius: var(--radius-lg);
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
    }
    .template-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
    }
    .template-thumb {
      height: 190px;
      width: 100%;
      object-fit: cover;
      background: #E2E8F0;
    }
    .template-body {
      padding: 24px;
    }
    .template-tags {
      display: flex;
      gap: 8px;
      margin-bottom: 12px;
      flex-wrap: wrap;
    }
    .template-badge {
      background: #F1F5F9;
      color: var(--text-muted);
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 6px;
      font-weight: 500;
    }
    .template-title {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .template-text {
      font-size: 0.88rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 18px;
    }
    .template-footer {
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-top: 1px solid var(--border-light);
      padding-top: 14px;
      font-size: 0.825rem;
      color: var(--text-muted);
    }

    /* 板块五：深色沉浸式案例与架构体系 */
    #architecture {
      background: var(--dark-bg);
      color: #E2E8F0;
    }
    #architecture .section-title {
      color: #FFFFFF;
    }
    #architecture .section-desc {
      color: #94A3B8;
    }
    .arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .code-console-block {
      background: #0B0F19;
      border: 1px solid #334155;
      border-radius: var(--radius-md);
      padding: 24px;
      font-family: Consolas, "Courier New", monospace;
      font-size: 0.85rem;
      line-height: 1.7;
      color: #38BDF8;
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    }
    .console-header {
      display: flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 16px;
      padding-bottom: 12px;
      border-bottom: 1px solid #1E293B;
    }
    .dot-red { width: 10px; height: 10px; border-radius: 50%; background: #EF4444; }
    .dot-yellow { width: 10px; height: 10px; border-radius: 50%; background: #F59E0B; }
    .dot-green { width: 10px; height: 10px; border-radius: 50%; background: #10B981; }
    .arch-layers {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .arch-layer-card {
      background: var(--dark-card);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 20px 24px;
      transition: border-color 0.2s ease;
    }
    .arch-layer-card:hover {
      border-color: #4F46E5;
    }
    .arch-layer-card h4 {
      font-size: 1.05rem;
      color: #FFF;
      margin-bottom: 6px;
    }
    .arch-layer-card p {
      font-size: 0.875rem;
      color: #94A3B8;
      line-height: 1.6;
    }

    /* 板块六：开发者故事与客群 */
    #developer-stories {
      background: var(--light-bg);
    }
    .stories-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 36px;
    }
    .story-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 36px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .audience-category {
      font-weight: 700;
      color: #4F46E5;
      font-size: 0.85rem;
      margin-bottom: 10px;
    }
    .story-card h3 {
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .story-card p {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 24px;
    }
    .story-meta {
      display: flex;
      align-items: center;
      gap: 14px;
      border-top: 1px solid var(--border-light);
      padding-top: 20px;
    }
    .meta-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E0E7FF;
      color: #4F46E5;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    .meta-info-name {
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--text-main);
    }
    .meta-info-role {
      font-size: 0.775rem;
      color: var(--text-muted);
    }

    /* 板块七：关键数据统计条 */
    #metrics {
      background: #FFFFFF;
      border-top: 1px solid var(--border-light);
      border-bottom: 1px solid var(--border-light);
    }
    .metrics-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      text-align: center;
    }
    .metric-box {
      padding: 24px 16px;
      border-radius: var(--radius-md);
      background: #F8FAFC;
      border: 1px solid var(--border-light);
    }
    .metric-number {
      font-size: 2.75rem;
      font-weight: 800;
      background: var(--primary-gradient);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 6px;
      font-family: monospace;
    }
    .metric-label {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .metric-sub {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块八：开发者评价卡片 */
    #testimonials {
      background: var(--light-bg);
    }
    .testimonials-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .testi-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      padding: 30px;
      border: 1px solid var(--border-light);
      box-shadow: var(--shadow-sm);
    }
    .stars {
      color: #F59E0B;
      margin-bottom: 14px;
      font-size: 1.1rem;
    }
    .testi-card p {
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .testi-author {
      font-size: 0.875rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .testi-company {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 板块九：行业资讯与生态更新 */
    #news {
      background: #FFFFFF;
    }
    .news-top-bar {
      display: flex;
      justify-content: space-between;
      align-items: flex-end;
      margin-bottom: 40px;
    }
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 30px;
    }
    .news-card {
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all 0.3s ease;
      background: #FFFFFF;
    }
    .news-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #C7D2FE;
    }
    .news-thumb {
      height: 180px;
      width: 100%;
      object-fit: cover;
    }
    .news-content {
      padding: 24px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }
    .news-date {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.45;
    }
    .news-card p {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.65;
      margin-bottom: 16px;
    }
    .news-link {
      margin-top: auto;
      font-size: 0.875rem;
      font-weight: 600;
      color: #4F46E5;
      display: inline-flex;
      align-items: center;
      gap: 6px;
    }

    /* 板块十：FAQ 手风琴 */
    #faq {
      background: var(--light-bg);
    }
    .faq-wrapper {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: #FFFFFF;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: all 0.25s ease;
    }
    .faq-item.active {
      border-color: #A5B4FC;
      box-shadow: var(--shadow-sm);
    }
    .faq-trigger {
      width: 100%;
      padding: 20px 24px;
      background: none;
      border: none;
      text-align: left;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
    }
    .faq-icon {
      width: 24px;
      height: 24px;
      border-radius: 50%;
      background: #F1F5F9;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      transition: transform 0.3s ease;
    }
    .faq-item.active .faq-icon {
      transform: rotate(180deg);
      background: #EEF2FF;
      color: #4F46E5;
    }
    .faq-answer {
      display: none;
      padding: 0 24px 20px;
      font-size: 0.925rem;
      color: var(--text-body);
      line-height: 1.7;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }
    .faq-item.active .faq-answer {
      display: block;
    }

    /* 板块十一：接入指南 */
    #guide {
      background: #FFFFFF;
    }
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      position: relative;
      margin-bottom: 48px;
    }
    .step-card {
      background: #F8FAFC;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-lg);
      padding: 30px 22px;
      position: relative;
    }
    .step-badge {
      width: 36px;
      height: 36px;
      background: var(--primary-gradient);
      color: #FFFFFF;
      font-weight: 800;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 18px;
      box-shadow: 0 4px 10px rgba(124, 58, 237, 0.3);
    }
    .step-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 10px;
    }
    .step-card p {
      font-size: 0.875rem;
      color: var(--text-body);
      line-height: 1.6;
    }
    .env-specs-box {
      background: #F8FAFC;
      border: 1px solid var(--border-light);
      border-radius: var(--radius-md);
      padding: 24px;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
      text-align: center;
    }
    .spec-item-name {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 4px;
    }
    .spec-item-val {
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--text-main);
    }

    /* 板块十二：收口转化卡片 */
    #cta {
      background: #FFFFFF;
      padding-bottom: 96px;
    }
    .cta-big-card {
      background: var(--primary-gradient);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      color: #FFFFFF;
      text-align: center;
      position: relative;
      overflow: hidden;
      box-shadow: var(--shadow-xl);
    }
    .cta-big-card::before {
      content: "";
      position: absolute;
      top: -50%;
      left: -20%;
      width: 140%;
      height: 200%;
      background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, rgba(255,255,255,0) 65%);
      pointer-events: none;
    }
    .cta-big-card h2 {
      font-size: 2.4rem;
      font-weight: 800;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }
    .cta-big-card p {
      font-size: 1.05rem;
      color: #E0E7FF;
      max-width: 680px;
      margin: 0 auto 36px;
      line-height: 1.7;
    }
    .inline-join-form {
      display: flex;
      justify-content: center;
      gap: 12px;
      max-width: 520px;
      margin: 0 auto;
      flex-wrap: wrap;
    }
    .inline-join-form input {
      flex: 1;
      min-width: 260px;
      padding: 14px 20px;
      border-radius: 999px;
      border: 1px solid rgba(255, 255, 255, 0.4);
      background: rgba(255, 255, 255, 0.15);
      color: #FFFFFF;
      outline: none;
      font-size: 0.95rem;
      backdrop-filter: blur(8px);
    }
    .inline-join-form input::placeholder {
      color: #C7D2FE;
    }
    .inline-join-form button {
      padding: 14px 32px;
      border-radius: 999px;
      background: #FFFFFF;
      color: #4F46E5;
      font-weight: 700;
      font-size: 0.95rem;
      border: none;
      cursor: pointer;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
      transition: all 0.2s;
    }
    .inline-join-form button:hover {
      background: #F8FAFC;
      transform: translateY(-2px);
    }

    /* 页脚 Footer */
    .site-footer {
      background: #0B0F19;
      color: #94A3B8;
      padding-top: 72px;
      padding-bottom: 40px;
      border-top: 1px solid #1E293B;
      font-size: 0.9rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
      gap: 48px;
      margin-bottom: 56px;
    }
    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 1.25rem;
      font-weight: 800;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .footer-brand p {
      line-height: 1.7;
      margin-bottom: 20px;
      font-size: 0.875rem;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 20px;
    }
    .footer-col ul {
      display: flex;
      flex-direction: column;
      gap: 12px;
    }
    .footer-col a:hover {
      color: #FFFFFF;
    }
    .footer-contact-item {
      display: flex;
      flex-direction: column;
      gap: 6px;
      margin-bottom: 12px;
      font-size: 0.85rem;
    }
    .footer-bottom {
      border-top: 1px solid #1E293B;
      padding-top: 32px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      font-size: 0.825rem;
      flex-wrap: wrap;
      gap: 16px;
    }
    .footer-bottom a {
      color: #64748B;
      margin-left: 16px;
    }
    .footer-bottom a:hover {
      color: #94A3B8;
    }

    /* 响应式样式断点 */
    @media (max-width: 1024px) {
      .hero-grid, .intro-grid, .arch-grid {
        grid-template-columns: 1fr;
      }
      .features-grid, .templates-grid, .testimonials-grid, .news-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .param-float-card {
        right: 16px;
        bottom: 16px;
      }
    }

    @media (max-width: 768px) {
      .top-promo-bar .promo-links {
        display: none;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 24px;
        border-bottom: 1px solid var(--border-light);
        box-shadow: var(--shadow-md);
        gap: 18px;
      }
      .nav-menu.open {
        display: flex;
      }
      .mobile-toggle {
        display: block;
      }
      .hero-h1 {
        font-size: 2.15rem;
      }
      .section-title {
        font-size: 1.75rem;
      }
      .features-grid, .templates-grid, .stories-grid, .testimonials-grid, .news-grid, .metrics-row, .steps-grid, .env-specs-box {
        grid-template-columns: 1fr;
      }
      .cta-big-card {
        padding: 40px 20px;
      }
      .cta-big-card h2 {
        font-size: 1.85rem;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-bottom a {
        margin-left: 0;
        margin-right: 16px;
      }
    }