/* roulang page: index */
:root {
      --primary: #4F46E5;
      --primary-hover: #4338CA;
      --secondary: #0F172A;
      --accent: #10B981;
      --warning: #F59E0B;
      --bg-main: #F8FAFC;
      --bg-white: #FFFFFF;
      --bg-dark: #090D16;
      --text-main: #0F172A;
      --text-body: #334155;
      --text-muted: #64748B;
      --border-color: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 12px;
      --radius-lg: 20px;
      --radius-full: 9999px;
      --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
      --shadow-md: 0 10px 15px -3px rgba(15,23,42,0.08), 0 4px 6px -4px rgba(15,23,42,0.04);
      --shadow-lg: 0 20px 25px -5px rgba(15,23,42,0.12), 0 8px 10px -6px rgba(15,23,42,0.06);
      --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    }
    *, *::before, *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    html {
      scroll-behavior: smooth;
      font-size: 16px;
    }
    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      background-color: var(--bg-main);
      color: var(--text-body);
      line-height: 1.7;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-sm);
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition);
    }
    button, input, select, textarea {
      font-family: inherit;
      font-size: inherit;
      outline: none;
    }
    .container {
      width: 100%;
      max-width: 1280px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 1.25rem;
      padding-right: 1.25rem;
    }
    .tabular {
      font-variant-numeric: tabular-nums;
    }

    /* 顶部导航 */
    .top-bar {
      background-color: #0F172A;
      color: #94A3B8;
      font-size: 0.8125rem;
      border-bottom: 1px solid rgba(255,255,255,0.08);
      padding: 0.45rem 0;
    }
    .top-bar-content {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .top-meta-group {
      display: flex;
      gap: 1.5rem;
    }
    .main-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.95);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-wrapper {
      display: flex;
      justify-content: space-between;
      align-items: center;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
    }
    .brand-badge {
      width: 38px;
      height: 38px;
      border-radius: var(--radius-md);
      background: linear-gradient(135deg, var(--primary), #818CF8);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 1.1rem;
      font-weight: 800;
      box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
    }
    .nav-menu {
      display: flex;
      gap: 1.75rem;
      list-style: none;
    }
    .nav-link {
      font-weight: 500;
      color: var(--text-body);
      font-size: 0.9375rem;
      position: relative;
      padding: 0.5rem 0;
    }
    .nav-link:hover, .nav-link.active {
      color: var(--primary);
    }
    .nav-link.active::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--primary);
      border-radius: var(--radius-full);
    }
    .header-actions {
      display: flex;
      align-items: center;
      gap: 1rem;
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 600;
      font-size: 0.9375rem;
      padding: 0.65rem 1.4rem;
      border-radius: var(--radius-full);
      cursor: pointer;
      transition: var(--transition);
      border: 1px solid transparent;
      white-space: nowrap;
    }
    .btn-primary {
      background-color: var(--primary);
      color: #ffffff;
      box-shadow: 0 4px 12px rgba(79,70,229,0.25);
    }
    .btn-primary:hover {
      background-color: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 16px rgba(79,70,229,0.35);
    }
    .btn-outline {
      background-color: transparent;
      border-color: #CBD5E1;
      color: var(--text-main);
    }
    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background-color: rgba(79,70,229,0.04);
    }
    .btn-accent {
      background-color: var(--accent);
      color: #ffffff;
    }
    .btn-accent:hover {
      background-color: #059669;
    }
    .mobile-menu-btn {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--text-main);
      cursor: pointer;
    }

    /* 板块通用规范 */
    .section-block {
      padding: 5rem 0;
      border-bottom: 1px solid #EEF2F6;
    }
    .section-block.bg-alt {
      background-color: var(--bg-white);
    }
    .section-block.bg-dark {
      background-color: var(--bg-dark);
      color: #F8FAFC;
    }
    .section-header {
      max-width: 780px;
      margin: 0 auto 3.5rem auto;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      font-size: 0.8125rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--primary);
      background: rgba(79,70,229,0.08);
      padding: 0.35rem 0.85rem;
      border-radius: var(--radius-full);
      margin-bottom: 1rem;
    }
    .section-tag.light {
      background: rgba(255,255,255,0.1);
      color: #38BDF8;
    }
    .section-title {
      font-size: 2.125rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.3;
      margin-bottom: 1rem;
      color: var(--text-main);
    }
    .section-block.bg-dark .section-title {
      color: #FFFFFF;
    }
    .section-desc {
      font-size: 1.0625rem;
      color: var(--text-muted);
      line-height: 1.75;
    }
    .section-block.bg-dark .section-desc {
      color: #94A3B8;
    }

    /* 板块 1: Hero (直播预告封面 + 开播倒计时 + 提醒订阅) */
    .hero-section {
      position: relative;
      background: linear-gradient(to bottom right, #090D16, #1E1B4B);
      color: #FFFFFF;
      padding: 5rem 0 6rem 0;
      overflow: hidden;
      border-bottom: 1px solid rgba(255,255,255,0.08);
    }
    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/517321b8c67870e9.jpg');
      background-size: cover;
      background-position: center;
      opacity: 0.18;
      mix-blend-mode: luminosity;
    }
    .hero-grid {
      position: relative;
      z-index: 2;
      display: grid;
      grid-template-columns: 1.15fr 0.85fr;
      gap: 3.5rem;
      align-items: center;
    }
    .hero-h1 {
      font-size: 2.75rem;
      font-weight: 800;
      line-height: 1.25;
      letter-spacing: -0.02em;
      margin-bottom: 1.25rem;
      color: #FFFFFF;
    }
    .hero-h1 span {
      background: linear-gradient(90deg, #818CF8, #34D399);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }
    .hero-subtext {
      font-size: 1.1rem;
      line-height: 1.8;
      color: #CBD5E1;
      margin-bottom: 2rem;
    }
    .hero-card-live {
      background: rgba(15, 23, 42, 0.75);
      backdrop-filter: blur(16px);
      border: 1px solid rgba(255,255,255,0.12);
      border-radius: var(--radius-lg);
      padding: 2rem;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    }
    .live-badge-row {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 1.5rem;
    }
    .live-status {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      font-size: 0.8125rem;
      font-weight: 700;
      background: rgba(239, 68, 68, 0.2);
      color: #F87171;
      border: 1px solid rgba(239, 68, 68, 0.3);
      padding: 0.25rem 0.75rem;
      border-radius: var(--radius-full);
    }
    .live-dot {
      width: 8px;
      height: 8px;
      background-color: #EF4444;
      border-radius: 50%;
      animation: pulse 1.5s infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.4; transform: scale(1.2); }
    }
    .live-cover-wrap {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      margin-bottom: 1.5rem;
      border: 1px solid rgba(255,255,255,0.1);
    }
    .live-cover-wrap img {
      width: 100%;
      height: 200px;
      object-fit: cover;
    }
    .live-cover-label {
      position: absolute;
      bottom: 10px;
      left: 10px;
      background: rgba(15, 23, 42, 0.8);
      font-size: 0.8125rem;
      padding: 0.25rem 0.65rem;
      border-radius: var(--radius-sm);
      color: #F8FAFC;
    }
    .countdown-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 0.75rem;
      margin-bottom: 1.5rem;
      text-align: center;
    }
    .countdown-item {
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.08);
      padding: 0.75rem 0.5rem;
      border-radius: var(--radius-sm);
    }
    .countdown-num {
      font-size: 1.5rem;
      font-weight: 700;
      color: #38BDF8;
      display: block;
    }
    .countdown-unit {
      font-size: 0.75rem;
      color: #94A3B8;
    }
    .subscribe-box {
      display: flex;
      gap: 0.5rem;
    }
    .subscribe-input {
      flex: 1;
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: var(--radius-full);
      padding: 0.65rem 1rem;
      color: #fff;
      font-size: 0.875rem;
    }
    .subscribe-input::placeholder {
      color: #64748B;
    }

    /* 板块 2: 卖点三连 */
    .selling-points-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .sp-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2.25rem 1.75rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      position: relative;
      overflow: hidden;
    }
    .sp-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-md);
      border-color: #CBD5E1;
    }
    .sp-card::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 4px;
      background: linear-gradient(90deg, var(--primary), var(--accent));
      opacity: 0;
      transition: var(--transition);
    }
    .sp-card:hover::before {
      opacity: 1;
    }
    .sp-icon {
      width: 52px;
      height: 52px;
      border-radius: var(--radius-md);
      background: rgba(79, 70, 229, 0.08);
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.5rem;
      font-weight: bold;
      margin-bottom: 1.25rem;
    }
    .sp-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .sp-text {
      font-size: 0.9375rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 3: 入口矩阵 */
    .portal-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .portal-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .portal-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .portal-badge {
      align-self: flex-start;
      font-size: 0.75rem;
      font-weight: 600;
      background: #F1F5F9;
      color: var(--text-muted);
      padding: 0.2rem 0.6rem;
      border-radius: var(--radius-full);
      margin-bottom: 1rem;
    }
    .portal-name {
      font-size: 1.125rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .portal-desc {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
      margin-bottom: 1.25rem;
    }
    .portal-link {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
    }
    .portal-link:hover {
      color: var(--primary-hover);
    }

    /* 板块 4: 最新发布 */
    .release-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2.5rem;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 2.5rem;
      box-shadow: var(--shadow-sm);
    }
    .release-media img {
      width: 100%;
      height: 320px;
      object-fit: cover;
      border-radius: var(--radius-md);
    }
    .release-body {
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .release-meta {
      display: flex;
      gap: 1rem;
      font-size: 0.8125rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
    }
    .release-title {
      font-size: 1.65rem;
      font-weight: 800;
      color: var(--text-main);
      margin-bottom: 1rem;
      line-height: 1.35;
    }
    .release-desc {
      font-size: 0.95rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .release-tags {
      display: flex;
      gap: 0.5rem;
      margin-bottom: 1.75rem;
      flex-wrap: wrap;
    }
    .tag-item {
      font-size: 0.75rem;
      background: #F1F5F9;
      color: #475569;
      padding: 0.25rem 0.65rem;
      border-radius: var(--radius-full);
    }

    /* 板块 5: 热门专题 */
    .topic-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .topic-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: var(--transition);
      box-shadow: var(--shadow-sm);
    }
    .topic-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }
    .topic-img-wrap {
      position: relative;
      height: 180px;
    }
    .topic-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      border-radius: 0;
    }
    .topic-chip {
      position: absolute;
      top: 12px;
      left: 12px;
      background: rgba(15,23,42,0.8);
      color: #fff;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.2rem 0.6rem;
      border-radius: var(--radius-full);
      backdrop-filter: blur(4px);
    }
    .topic-content {
      padding: 1.5rem;
    }
    .topic-h {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.6rem;
    }
    .topic-p {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 6: 资讯列表 */
    .intel-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .intel-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: var(--transition);
    }
    .intel-item:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-sm);
    }
    .intel-time {
      font-size: 0.75rem;
      color: #94A3B8;
      margin-bottom: 0.5rem;
    }
    .intel-headline {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
      line-height: 1.4;
    }
    .intel-summary {
      font-size: 0.85rem;
      color: var(--text-body);
      line-height: 1.6;
      margin-bottom: 1.25rem;
    }
    .intel-action {
      font-size: 0.8125rem;
      font-weight: 600;
      color: var(--primary);
    }

    /* 板块 7: 数据指标 */
    .metrics-wall {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .metric-box {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem 1.5rem;
      box-shadow: var(--shadow-sm);
      position: relative;
    }
    .metric-label {
      font-size: 0.875rem;
      font-weight: 600;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
    }
    .metric-value {
      font-size: 2.25rem;
      font-weight: 800;
      color: var(--text-main);
      letter-spacing: -0.02em;
      margin-bottom: 0.5rem;
    }
    .metric-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.25rem;
      font-size: 0.75rem;
      font-weight: 600;
      padding: 0.15rem 0.5rem;
      border-radius: var(--radius-full);
    }
    .metric-badge.green {
      background: #ECFDF5;
      color: #059669;
    }
    .metric-desc {
      font-size: 0.8125rem;
      color: #94A3B8;
      margin-top: 0.75rem;
      line-height: 1.5;
    }

    /* 板块 8: 核心能力优势 (扩板块 1) */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 1.75rem;
    }
    .adv-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      transition: var(--transition);
    }
    .adv-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-md);
    }
    .adv-num {
      font-size: 1.5rem;
      font-weight: 800;
      color: #CBD5E1;
      margin-bottom: 0.75rem;
    }
    .adv-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.5rem;
    }
    .adv-text {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块 9: 结果对比 (传统 vs 平台驱动) (扩板块 2) */
    .benchmark-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid rgba(255,255,255,0.1);
      background: #111827;
      font-size: 0.9375rem;
    }
    .benchmark-table th, .benchmark-table td {
      padding: 1.25rem 1.5rem;
      text-align: left;
    }
    .benchmark-table th {
      background: #1F2937;
      color: #F9FAFB;
      font-weight: 700;
      border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    .benchmark-table tr:not(:last-child) td {
      border-bottom: 1px solid rgba(255,255,255,0.06);
    }
    .col-legacy {
      color: #9CA3AF;
    }
    .col-platform {
      color: #34D399;
      font-weight: 600;
    }

    /* 板块 10: 典型业务场景用户故事 (扩板块 3) */
    .persona-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .persona-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
    }
    .persona-role {
      font-size: 0.8125rem;
      font-weight: 700;
      color: var(--primary);
      text-transform: uppercase;
      margin-bottom: 0.5rem;
    }
    .persona-title {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.75rem;
    }
    .persona-body {
      font-size: 0.875rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    /* 板块 11: 平台保障与合规认证 (扩板块 4) */
    .trust-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 1.5rem;
    }
    .trust-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 1.75rem;
      text-align: center;
    }
    .trust-badge-icon {
      width: 48px;
      height: 48px;
      margin: 0 auto 1rem auto;
      border-radius: 50%;
      background: rgba(16, 185, 129, 0.1);
      color: var(--accent);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      font-weight: bold;
    }
    .trust-name {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 0.4rem;
    }
    .trust-desc {
      font-size: 0.8125rem;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块 12: 用户口碑 */
    .review-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }
    .review-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 2rem;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .review-stars {
      color: #F59E0B;
      font-size: 1.1rem;
      margin-bottom: 1rem;
    }
    .review-text {
      font-size: 0.9375rem;
      color: var(--text-body);
      line-height: 1.7;
      margin-bottom: 1.5rem;
    }
    .review-author {
      display: flex;
      align-items: center;
      gap: 0.75rem;
    }
    .author-avatar {
      width: 42px;
      height: 42px;
      border-radius: 50%;
      background: #E2E8F0;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      color: var(--primary);
    }
    .author-info h4 {
      font-size: 0.9375rem;
      color: var(--text-main);
    }
    .author-info p {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 板块 13: 常见问题快速解答 (扩板块 5) */
    .faq-container {
      max-width: 860px;
      margin: 0 auto;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      margin-bottom: 1rem;
      overflow: hidden;
    }
    .faq-header {
      width: 100%;
      padding: 1.25rem 1.5rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: none;
      border: none;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--text-main);
      cursor: pointer;
      text-align: left;
    }
    .faq-body {
      padding: 0 1.5rem 1.25rem 1.5rem;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      display: none;
    }
    .faq-item.active .faq-body {
      display: block;
    }
    .faq-item.active .faq-toggle {
      transform: rotate(180deg);
    }
    .faq-toggle {
      transition: var(--transition);
      font-size: 0.85rem;
    }

    /* 板块 14: 联系入口与试用表单 */
    .contact-card-box {
      background: linear-gradient(135deg, #1E1B4B, #0F172A);
      border-radius: var(--radius-lg);
      padding: 3.5rem;
      color: #FFFFFF;
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 3.5rem;
      align-items: center;
    }
    .contact-content h3 {
      font-size: 2rem;
      font-weight: 800;
      margin-bottom: 1rem;
      line-height: 1.3;
    }
    .contact-content p {
      font-size: 0.95rem;
      color: #CBD5E1;
      line-height: 1.75;
      margin-bottom: 2rem;
    }
    .contact-points {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
      font-size: 0.875rem;
      color: #94A3B8;
    }
    .contact-points li {
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }
    .contact-form {
      background: #FFFFFF;
      padding: 2.25rem;
      border-radius: var(--radius-md);
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 1.25rem;
    }
    .form-label {
      display: block;
      font-size: 0.8125rem;
      font-weight: 600;
      margin-bottom: 0.4rem;
      color: var(--text-main);
    }
    .form-control {
      width: 100%;
      padding: 0.75rem 1rem;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      transition: var(--transition);
    }
    .form-control:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
    }
    .form-disclaimer {
      font-size: 0.75rem;
      color: #94A3B8;
      margin-top: 0.75rem;
      line-height: 1.4;
    }

    /* 全局页脚 */
    .site-footer {
      background-color: #090D16;
      color: #94A3B8;
      padding: 4.5rem 0 2rem 0;
      border-top: 1px solid rgba(255,255,255,0.08);
      font-size: 0.875rem;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
      gap: 3rem;
      margin-bottom: 3.5rem;
    }
    .footer-col-title {
      font-size: 0.95rem;
      font-weight: 700;
      color: #F8FAFC;
      margin-bottom: 1.25rem;
      letter-spacing: 0.02em;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-brand p {
      line-height: 1.75;
      margin-top: 1rem;
      color: #64748B;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.06);
      padding-top: 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 1rem;
      font-size: 0.8125rem;
      color: #64748B;
    }

    /* 移动端与自适应断点 */
    @media (max-width: 1024px) {
      .hero-grid, .release-container, .contact-card-box {
        grid-template-columns: 1fr;
        gap: 2.5rem;
      }
      .portal-grid, .intel-grid, .metrics-wall, .trust-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .selling-points-grid, .topic-grid, .advantage-grid, .persona-grid, .review-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .nav-menu {
        display: none;
      }
      .mobile-menu-btn {
        display: block;
      }
      .hero-h1 {
        font-size: 2.1rem;
      }
      .selling-points-grid, .portal-grid, .topic-grid, .intel-grid, .metrics-wall, .advantage-grid, .persona-grid, .trust-grid, .review-grid {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .contact-card-box {
        padding: 2rem 1.5rem;
      }
      .subscribe-box {
        flex-direction: column;
      }
    }