/* roulang page: index */
:root {
      --primary: #FF5A1F;
      --primary-hover: #E04810;
      --secondary: #00C882;
      --secondary-dark: #009E66;
      --dark-slate: #0F172A;
      --dark-card: #1E293B;
      --text-main: #1E293B;
      --text-muted: #64748B;
      --text-light: #94A3B8;
      --bg-light: #F8FAFC;
      --bg-white: #FFFFFF;
      --border-color: #E2E8F0;
      --border-dark: #334155;
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
      --shadow-lg: 0 20px 35px -10px rgba(15, 23, 42, 0.12);
      --container-max: 1240px;
      --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

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

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

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
      color: var(--text-main);
      background-color: var(--bg-light);
      line-height: 1.75;
      -webkit-font-smoothing: antialiased;
    }

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

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

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

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

    /* 顶部双行导航系统 */
    .top-bar {
      background-color: #0B1120;
      color: #94A3B8;
      font-size: 0.825rem;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
      padding: 6px 0;
    }

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

    .top-bar-left span {
      margin-right: 20px;
    }

    .top-bar-right a {
      color: #CBD5E1;
      margin-left: 18px;
    }

    .top-bar-right a:hover {
      color: var(--primary);
    }

    .header-main {
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      position: sticky;
      top: 0;
      z-index: 1000;
      border-bottom: 1px solid var(--border-color);
      box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    }

    .header-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 12px;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--dark-slate);
      letter-spacing: -0.5px;
    }

    .logo-badge {
      background: linear-gradient(135deg, var(--primary), #FF8540);
      color: #FFF;
      padding: 6px 10px;
      border-radius: var(--radius-sm);
      font-size: 1rem;
      font-weight: 900;
      box-shadow: 0 4px 10px rgba(255, 90, 31, 0.35);
    }

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

    .nav-link {
      font-size: 0.98rem;
      font-weight: 600;
      color: #475569;
      position: relative;
      padding: 6px 0;
    }

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

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

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      border-radius: var(--radius-sm);
      padding: 11px 24px;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      transition: var(--transition);
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--primary);
      color: #FFFFFF;
      box-shadow: 0 6px 16px rgba(255, 90, 31, 0.28);
    }

    .btn-primary:hover {
      background: var(--primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 10px 20px rgba(255, 90, 31, 0.38);
    }

    .btn-outline {
      border-color: #CBD5E1;
      background: #FFFFFF;
      color: var(--dark-slate);
    }

    .btn-outline:hover {
      border-color: var(--primary);
      color: var(--primary);
      background: #FFF7F4;
    }

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

    .btn-secondary:hover {
      background: var(--secondary-dark);
      transform: translateY(-2px);
    }

    .btn-ghost-dark {
      border: 1px solid var(--border-dark);
      background: rgba(255, 255, 255, 0.05);
      color: #F8FAFC;
    }

    .btn-ghost-dark:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: #FFF;
    }

    /* 移动端汉堡按钮 */
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 1.5rem;
      color: var(--dark-slate);
      cursor: pointer;
      padding: 8px;
    }

    /* 通用板块样式 */
    .section-wrap {
      padding: 85px 0;
      position: relative;
    }

    .section-white {
      background-color: var(--bg-white);
    }

    .section-gray {
      background-color: var(--bg-light);
    }

    .section-dark {
      background-color: var(--dark-slate);
      color: #F1F5F9;
    }

    .section-head {
      margin-bottom: 50px;
    }

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

    .badge-sub {
      display: inline-block;
      font-size: 0.825rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 1px;
      padding: 6px 14px;
      border-radius: 99px;
      margin-bottom: 14px;
      background-color: #FFF0EB;
      color: var(--primary);
    }

    .badge-sub.dark {
      background: rgba(255, 90, 31, 0.18);
      color: #FF8540;
    }

    .section-title {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--dark-slate);
      line-height: 1.35;
      margin-bottom: 16px;
      letter-spacing: -0.5px;
    }

    .section-dark .section-title {
      color: #FFFFFF;
    }

    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      line-height: 1.8;
    }

    .section-dark .section-desc {
      color: var(--text-light);
    }

    /* 1. 首屏双栏门户 Hero */
    .hero-banner {
      position: relative;
      background: linear-gradient(135deg, #0A0F1D 0%, #151F33 100%);
      color: #FFF;
      padding: 85px 0 90px;
      overflow: hidden;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

    .hero-bg-overlay {
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      opacity: 0.15;
      background-position: center center;
      background-size: cover;
      pointer-events: none;
    }

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

    .hero-left h1 {
      font-size: 3rem;
      font-weight: 900;
      line-height: 1.25;
      letter-spacing: -1px;
      margin-bottom: 22px;
      color: #FFFFFF;
    }

    .hero-left h1 span {
      background: linear-gradient(90deg, #FF7235, #FFA14A);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
    }

    .hero-lead {
      font-size: 1.1rem;
      color: #CBD5E1;
      margin-bottom: 32px;
      line-height: 1.85;
      max-width: 620px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      margin-bottom: 36px;
    }

    .hero-actions .btn {
      padding: 13px 28px;
      font-size: 1.025rem;
    }

    .hero-quick-features {
      display: flex;
      gap: 20px;
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding-top: 24px;
    }

    .quick-feat-item {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 0.9rem;
      color: #94A3B8;
    }

    .quick-feat-item svg {
      width: 18px;
      height: 18px;
      fill: var(--secondary);
    }

    /* 首屏右侧快捷入口网格 */
    .hero-portal-card {
      background: rgba(30, 41, 59, 0.7);
      backdrop-filter: blur(14px);
      border: 1px solid rgba(255, 255, 255, 0.12);
      border-radius: var(--radius-lg);
      padding: 30px;
      box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    }

    .portal-header {
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 18px;
      margin-bottom: 22px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .portal-header h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: #FFFFFF;
    }

    .portal-header span {
      background: rgba(0, 200, 130, 0.2);
      color: var(--secondary);
      font-size: 0.75rem;
      padding: 3px 10px;
      border-radius: 20px;
      font-weight: 600;
    }

    .portal-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 14px;
    }

    .portal-item {
      background: rgba(15, 23, 42, 0.6);
      border: 1px solid rgba(255, 255, 255, 0.08);
      border-radius: var(--radius-md);
      padding: 18px 14px;
      transition: var(--transition);
      cursor: pointer;
      display: block;
    }

    .portal-item:hover {
      border-color: var(--primary);
      background: rgba(255, 90, 31, 0.12);
      transform: translateY(-3px);
    }

    .portal-icon {
      width: 38px;
      height: 38px;
      border-radius: 8px;
      background: rgba(255, 255, 255, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 12px;
      color: var(--primary);
      font-size: 1.1rem;
      font-weight: bold;
    }

    .portal-item h4 {
      font-size: 0.95rem;
      color: #FFFFFF;
      margin-bottom: 5px;
    }

    .portal-item p {
      font-size: 0.8rem;
      color: #94A3B8;
      line-height: 1.45;
    }

    /* 贴合 Hero 底部即时看板条 */
    .metrics-bar-wrap {
      margin-top: -36px;
      position: relative;
      z-index: 10;
    }

    .metrics-dashboard {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-md);
      border: 1px solid var(--border-color);
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      padding: 24px 32px;
    }

    .metric-card {
      text-align: center;
      position: relative;
    }

    .metric-card:not(:last-child)::after {
      content: '';
      position: absolute;
      right: 0;
      top: 15%;
      height: 70%;
      width: 1px;
      background-color: var(--border-color);
    }

    .metric-val {
      font-size: 2.2rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }

    .metric-val span {
      font-size: 1.25rem;
      font-weight: 700;
    }

    .metric-title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 4px;
    }

    .metric-desc {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* 2. 品牌与产品定位介绍区 */
    .brand-arch-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 50px;
      align-items: center;
    }

    .arch-img-wrap {
      position: relative;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      border: 1px solid var(--border-color);
    }

    .arch-img-wrap img {
      width: 100%;
      height: 420px;
      object-fit: cover;
    }

    .arch-tag-float {
      position: absolute;
      bottom: 20px;
      left: 20px;
      right: 20px;
      background: rgba(15, 23, 42, 0.85);
      backdrop-filter: blur(8px);
      padding: 16px 20px;
      border-radius: var(--radius-md);
      color: #FFF;
      border: 1px solid rgba(255, 255, 255, 0.15);
    }

    .arch-tag-float h5 {
      font-size: 0.95rem;
      color: #00C882;
      margin-bottom: 4px;
    }

    .arch-tag-float p {
      font-size: 0.825rem;
      color: #CBD5E1;
      margin: 0;
    }

    .param-list {
      margin-top: 24px;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

    .param-item {
      background: #F8FAFC;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      padding: 14px 18px;
      display: flex;
      align-items: flex-start;
      gap: 14px;
    }

    .param-num {
      background: var(--dark-slate);
      color: #FFF;
      width: 26px;
      height: 26px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 0.8rem;
      font-weight: 700;
      flex-shrink: 0;
      margin-top: 2px;
    }

    .param-text strong {
      display: block;
      font-size: 0.95rem;
      color: var(--dark-slate);
      margin-bottom: 2px;
    }

    .param-text p {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin: 0;
    }

    /* 3. 核心功能与服务矩阵（6 卡网格） */
    .feature-grid-6 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .feat-card {
      background: var(--bg-white);
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      padding: 30px 26px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .feat-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-md);
      border-color: #FED7AA;
    }

    .feat-icon-box {
      width: 48px;
      height: 48px;
      border-radius: 12px;
      background: #FFF0EB;
      color: var(--primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      margin-bottom: 20px;
    }

    .feat-card h4 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 10px;
    }

    .feat-card p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.65;
      flex-grow: 1;
    }

    .feat-foot-tag {
      margin-top: 18px;
      font-size: 0.8rem;
      color: var(--primary);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* 4. 解决方案与终端产品（3 柱状卡片） */
    .solution-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .sol-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-lg);
      padding: 34px 28px;
      transition: var(--transition);
      display: flex;
      flex-direction: column;
      position: relative;
    }

    .sol-card.featured {
      border-color: var(--primary);
      box-shadow: 0 12px 30px rgba(255, 90, 31, 0.12);
    }

    .sol-badge-popular {
      position: absolute;
      top: -13px;
      left: 28px;
      background: var(--primary);
      color: #FFF;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 4px 12px;
      border-radius: 12px;
    }

    .sol-card h4 {
      font-size: 1.3rem;
      font-weight: 800;
      color: var(--dark-slate);
      margin-bottom: 8px;
    }

    .sol-card .sol-target {
      font-size: 0.85rem;
      color: var(--primary);
      font-weight: 600;
      margin-bottom: 18px;
    }

    .sol-card p.sol-desc {
      font-size: 0.92rem;
      color: var(--text-muted);
      margin-bottom: 24px;
      line-height: 1.65;
    }

    .sol-feature-list {
      list-style: none;
      margin-bottom: 28px;
      flex-grow: 1;
    }

    .sol-feature-list li {
      font-size: 0.88rem;
      color: #475569;
      padding: 8px 0;
      display: flex;
      align-items: center;
      gap: 10px;
      border-bottom: 1px dashed var(--border-color);
    }

    .sol-feature-list li::before {
      content: '✓';
      color: var(--secondary);
      font-weight: 800;
    }

    /* 5. 深色对比区块（Results Comparison） */
    .compare-container {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      margin-top: 20px;
    }

    .compare-box {
      border-radius: var(--radius-lg);
      padding: 36px 32px;
    }

    .compare-box.traditional {
      background: rgba(255, 255, 255, 0.04);
      border: 1px solid rgba(255, 255, 255, 0.1);
    }

    .compare-box.digital {
      background: linear-gradient(145deg, rgba(255, 90, 31, 0.08), rgba(0, 200, 130, 0.08));
      border: 1px solid rgba(255, 90, 31, 0.35);
    }

    .compare-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 24px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
      padding-bottom: 16px;
    }

    .compare-header h4 {
      font-size: 1.25rem;
      font-weight: 700;
    }

    .compare-traditional-tag {
      color: #EF4444;
      font-size: 0.85rem;
      font-weight: 600;
    }

    .compare-digital-tag {
      color: var(--secondary);
      font-size: 0.85rem;
      font-weight: 600;
    }

    .compare-item-list {
      display: flex;
      flex-direction: column;
      gap: 18px;
    }

    .compare-row {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      font-size: 0.92rem;
      line-height: 1.6;
    }

    .compare-row.bad svg {
      width: 20px;
      height: 20px;
      fill: #EF4444;
      flex-shrink: 0;
      margin-top: 3px;
    }

    .compare-row.good svg {
      width: 20px;
      height: 20px;
      fill: var(--secondary);
      flex-shrink: 0;
      margin-top: 3px;
    }

    /* 6. 行业赋能里程碑（Milestones） */
    .timeline-wrap {
      position: relative;
      max-width: 960px;
      margin: 40px auto 0;
    }

    .timeline-wrap::before {
      content: '';
      position: absolute;
      top: 0;
      bottom: 0;
      left: 50%;
      width: 2px;
      background: var(--border-color);
      transform: translateX(-50%);
    }

    .timeline-step {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 40px;
      position: relative;
    }

    .timeline-step:nth-child(even) {
      flex-direction: row-reverse;
    }

    .timeline-content {
      width: 44%;
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-sm);
    }

    .timeline-dot {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%, -50%);
      width: 22px;
      height: 22px;
      border-radius: 50%;
      background: var(--bg-white);
      border: 4px solid var(--primary);
      z-index: 2;
    }

    .timeline-year {
      font-size: 0.85rem;
      font-weight: 800;
      color: var(--primary);
      margin-bottom: 6px;
    }

    .timeline-content h4 {
      font-size: 1.1rem;
      color: var(--dark-slate);
      margin-bottom: 8px;
    }

    .timeline-content p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 7. 标杆场馆用户故事 */
    .cases-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 32px;
    }

    .case-card {
      background: #FFFFFF;
      border-radius: var(--radius-lg);
      border: 1px solid var(--border-color);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }

    .case-cover {
      height: 220px;
      overflow: hidden;
    }

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

    .case-card:hover .case-cover img {
      transform: scale(1.04);
    }

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

    .case-header-tag {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 14px;
    }

    .case-type {
      background: #F1F5F9;
      color: #475569;
      font-size: 0.75rem;
      padding: 4px 10px;
      border-radius: 6px;
      font-weight: 600;
    }

    .case-quote-icon {
      font-size: 1.4rem;
      color: var(--primary);
      line-height: 1;
    }

    .case-body h4 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 12px;
    }

    .case-body p {
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .case-stats-row {
      display: flex;
      gap: 20px;
      border-top: 1px solid var(--border-color);
      padding-top: 16px;
    }

    .case-stat-num {
      font-size: 1.25rem;
      font-weight: 800;
      color: var(--primary);
    }

    .case-stat-label {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    /* 8. 核心运营数据统计条 */
    .impact-stats-section {
      background: linear-gradient(90deg, #111827 0%, #1E293B 100%);
      color: #FFF;
      padding: 50px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }

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

    .impact-item h3 {
      font-size: 2.4rem;
      font-weight: 900;
      color: var(--secondary);
      line-height: 1.1;
      margin-bottom: 8px;
    }

    .impact-item p {
      font-size: 0.9rem;
      color: #94A3B8;
    }

    /* 9. 口碑评价区 */
    .testimonial-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 26px;
    }

    .testi-card {
      background: #FFFFFF;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 26px;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
    }

    .testi-stars {
      color: #F59E0B;
      font-size: 0.95rem;
      margin-bottom: 14px;
      letter-spacing: 2px;
    }

    .testi-text {
      font-size: 0.92rem;
      color: #475569;
      line-height: 1.7;
      margin-bottom: 20px;
      flex-grow: 1;
    }

    .testi-author {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .testi-avatar {
      width: 44px;
      height: 44px;
      border-radius: 50%;
      background: #E2E8F0;
      color: #64748B;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
    }

    .testi-info h5 {
      font-size: 0.92rem;
      color: var(--dark-slate);
      font-weight: 700;
    }

    .testi-info p {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    /* 10. 资讯动态摘要 */
    .news-grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }

    .news-card {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-color);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
    }

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

    .news-thumb {
      height: 180px;
      overflow: hidden;
    }

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

    .news-content {
      padding: 22px;
      display: flex;
      flex-direction: column;
      flex-grow: 1;
    }

    .news-meta {
      font-size: 0.78rem;
      color: var(--text-light);
      margin-bottom: 8px;
      display: flex;
      gap: 12px;
    }

    .news-content h4 {
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-slate);
      margin-bottom: 10px;
      line-height: 1.5;
    }

    .news-content p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.6;
      flex-grow: 1;
    }

    .news-link-inline {
      margin-top: 14px;
      font-size: 0.825rem;
      font-weight: 700;
      color: var(--primary);
      display: inline-block;
    }

    /* 11. 合规安全与保障生态 */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 22px;
    }

    .sec-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius-md);
      padding: 24px 20px;
      text-align: center;
    }

    .sec-icon {
      width: 46px;
      height: 46px;
      border-radius: 50%;
      background: rgba(0, 200, 130, 0.1);
      color: var(--secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.25rem;
      margin: 0 auto 16px;
    }

    .sec-card h4 {
      font-size: 1rem;
      color: var(--dark-slate);
      margin-bottom: 6px;
    }

    .sec-card p {
      font-size: 0.825rem;
      color: var(--text-muted);
      line-height: 1.55;
    }

    /* 12. 常见问题解答手风琴 */
    .faq-list-wrap {
      max-width: 860px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }

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

    .faq-item summary {
      padding: 20px 24px;
      font-size: 1.05rem;
      font-weight: 700;
      color: var(--dark-slate);
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      user-select: none;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary::after {
      content: '+';
      font-size: 1.4rem;
      color: var(--primary);
      transition: var(--transition);
    }

    .faq-item[open] summary::after {
      content: '−';
    }

    .faq-body {
      padding: 0 24px 22px;
      font-size: 0.92rem;
      color: var(--text-muted);
      line-height: 1.75;
      border-top: 1px solid #F1F5F9;
      padding-top: 16px;
    }

    /* 13. 底部预约演示表单 */
    .conversion-box {
      background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
      border-radius: var(--radius-lg);
      padding: 60px 48px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      box-shadow: var(--shadow-lg);
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 50px;
      align-items: center;
      color: #FFF;
    }

    .form-info h3 {
      font-size: 2rem;
      font-weight: 800;
      line-height: 1.35;
      margin-bottom: 18px;
    }

    .form-info p {
      font-size: 0.98rem;
      color: #CBD5E1;
      margin-bottom: 24px;
      line-height: 1.7;
    }

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

    .form-perks li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 0.9rem;
      color: #94A3B8;
    }

    .form-perks li span {
      color: var(--secondary);
      font-weight: bold;
    }

    .demo-form {
      background: #FFFFFF;
      border-radius: var(--radius-md);
      padding: 34px 28px;
      box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25);
    }

    .demo-form h4 {
      font-size: 1.25rem;
      color: var(--dark-slate);
      margin-bottom: 6px;
      font-weight: 800;
      text-align: center;
    }

    .demo-form .form-subtitle {
      text-align: center;
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-bottom: 22px;
    }

    .form-group {
      margin-bottom: 16px;
    }

    .form-label {
      display: block;
      font-size: 0.85rem;
      font-weight: 600;
      color: #334155;
      margin-bottom: 6px;
    }

    .form-control {
      width: 100%;
      padding: 11px 14px;
      border: 1px solid var(--border-color);
      border-radius: var(--radius-sm);
      font-size: 0.9rem;
      color: var(--dark-slate);
      transition: var(--transition);
      background-color: #F8FAFC;
    }

    .form-control:focus {
      outline: none;
      border-color: var(--primary);
      background-color: #FFFFFF;
      box-shadow: 0 0 0 3px rgba(255, 90, 31, 0.15);
    }

    .form-submit-btn {
      width: 100%;
      padding: 13px;
      margin-top: 10px;
      font-size: 1rem;
    }

    /* 页脚系统 */
    .site-footer {
      background-color: #070B14;
      color: #94A3B8;
      padding: 70px 0 30px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.88rem;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 50px;
    }

    .footer-col h5 {
      color: #FFFFFF;
      font-size: 1rem;
      font-weight: 700;
      margin-bottom: 18px;
    }

    .footer-col p {
      line-height: 1.7;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

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

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 25px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
      font-size: 0.8rem;
    }

    .footer-bottom a {
      color: #CBD5E1;
    }

    .footer-bottom a:hover {
      color: var(--primary);
    }

    /* 响应式断点适配 */
    @media (max-width: 1024px) {
      .hero-grid,
      .brand-arch-grid,
      .compare-container,
      .conversion-box {
        grid-template-columns: 1fr;
        gap: 36px;
      }
      .metrics-dashboard {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
      }
      .metric-card:nth-child(2)::after {
        display: none;
      }
      .feature-grid-6,
      .solution-grid-3,
      .testimonial-grid,
      .news-grid-3 {
        grid-template-columns: repeat(2, 1fr);
      }
      .security-grid,
      .impact-stats-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      .top-bar {
        display: none;
      }
      .mobile-toggle {
        display: block;
      }
      .nav-menu {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        padding: 20px;
        box-shadow: var(--shadow-md);
        border-bottom: 1px solid var(--border-color);
        gap: 16px;
      }
      .nav-menu.open {
        display: flex;
      }
      .header-actions {
        display: none;
      }
      .hero-banner {
        padding: 50px 0 70px;
      }
      .hero-left h1 {
        font-size: 2.1rem;
      }
      .section-wrap {
        padding: 55px 0;
      }
      .section-title {
        font-size: 1.7rem;
      }
      .portal-grid {
        grid-template-columns: 1fr;
      }
      .timeline-wrap::before {
        left: 20px;
      }
      .timeline-step {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 45px;
      }
      .timeline-content {
        width: 100%;
      }
      .timeline-dot {
        left: 20px;
      }
      .cases-grid,
      .feature-grid-6,
      .solution-grid-3,
      .testimonial-grid,
      .news-grid-3 {
        grid-template-columns: 1fr;
      }
      .conversion-box {
        padding: 36px 20px;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
    }