/* roulang page: index */
:root {
      --bg-base: #F8F9FA;
      --bg-white: #FFFFFF;
      --bg-dark: #111418;
      --text-main: #1A1D20;
      --text-muted: #5A626A;
      --brand-indigo: #1D3557;
      --brand-accent: #C59B27;
      --brand-accent-hover: #b0891e;
      --border-color: rgba(15, 17, 18, 0.08);
      --border-dark: rgba(255, 255, 255, 0.1);
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
      --shadow-md: 0 8px 24px -4px rgba(0, 0, 0, 0.07);
      --radius: 6px;
    }

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

    body {
      font-family: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
      background-color: var(--bg-base);
      color: var(--text-main);
      line-height: 1.75;
      font-size: 15px;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: all 0.2s ease;
    }

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

    .container {
      width: 100%;
      max-width: 1240px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 20px;
      padding-right: 20px;
    }

    /* 顶部服务通报条 */
    .top-bar {
      background-color: var(--brand-indigo);
      color: rgba(255, 255, 255, 0.85);
      font-size: 13px;
      padding: 8px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    }
    .top-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 10px;
    }
    .top-bar-info span {
      margin-right: 18px;
    }

    /* 导航栏 */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.96);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-color);
      box-shadow: var(--shadow-sm);
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 72px;
    }
    .brand-logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 20px;
      font-weight: 700;
      color: var(--brand-indigo);
      letter-spacing: -0.02em;
    }
    .brand-logo-badge {
      font-size: 11px;
      background: var(--bg-base);
      border: 1px solid var(--border-color);
      color: var(--text-muted);
      padding: 2px 6px;
      border-radius: 4px;
      font-weight: 500;
    }
    .nav-links {
      display: flex;
      align-items: center;
      list-style: none;
      gap: 28px;
    }
    .nav-links a {
      font-weight: 500;
      font-size: 15px;
      color: var(--text-main);
    }
    .nav-links a:hover {
      color: var(--brand-accent);
    }
    .header-btn {
      background: var(--brand-indigo);
      color: #fff;
      font-size: 14px;
      font-weight: 500;
      padding: 10px 20px;
      border-radius: var(--radius);
      border: none;
      cursor: pointer;
      display: inline-block;
    }
    .header-btn:hover {
      background: #13243c;
      color: #fff;
    }

    /* 通用组件 */
    .section-padding {
      padding: 72px 0;
    }
    .section-alt {
      background: var(--bg-white);
      border-top: 1px solid var(--border-color);
      border-bottom: 1px solid var(--border-color);
    }
    .section-dark {
      background: var(--bg-dark);
      color: #FFFFFF;
    }
    .section-header {
      margin-bottom: 40px;
    }
    .section-header h2 {
      font-size: 32px;
      font-weight: 700;
      color: var(--brand-indigo);
      margin-bottom: 14px;
      line-height: 1.3;
    }
    .section-dark .section-header h2 {
      color: #FFFFFF;
    }
    .section-header p {
      font-size: 16px;
      color: var(--text-muted);
      max-width: 800px;
    }
    .section-dark .section-header p {
      color: rgba(255, 255, 255, 0.7);
    }
    .badge {
      display: inline-block;
      font-size: 12px;
      padding: 4px 10px;
      background: rgba(29, 53, 87, 0.08);
      color: var(--brand-indigo);
      border-radius: 4px;
      font-weight: 600;
      margin-bottom: 12px;
    }
    .section-dark .badge {
      background: rgba(197, 155, 39, 0.15);
      color: var(--brand-accent);
    }

    /* 蓝图：Hero 无大图首屏，图标矩阵 + 状态条 + 短标题 */
    .hero-section {
      background: #FFFFFF;
      padding: 56px 0 64px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .hero-status-bar {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      background: var(--bg-base);
      border: 1px solid var(--border-color);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 13px;
      color: var(--text-main);
      margin-bottom: 24px;
    }
    .status-dot {
      width: 8px;
      height: 8px;
      background-color: #22c55e;
      border-radius: 50%;
      box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
    }
    .hero-title {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 800;
      color: var(--brand-indigo);
      letter-spacing: -0.02em;
      margin-bottom: 20px;
      max-width: 900px;
    }
    .hero-desc {
      font-size: 16px;
      line-height: 1.8;
      color: var(--text-muted);
      max-width: 860px;
      margin-bottom: 36px;
    }
    .hero-actions {
      display: flex;
      gap: 16px;
      align-items: center;
      margin-bottom: 48px;
      flex-wrap: wrap;
    }
    .btn-accent {
      background: var(--brand-accent);
      color: #FFFFFF;
      font-size: 15px;
      font-weight: 600;
      padding: 13px 28px;
      border-radius: var(--radius);
      box-shadow: 0 4px 14px rgba(197, 155, 39, 0.25);
    }
    .btn-accent:hover {
      background: var(--brand-accent-hover);
    }
    .btn-outline {
      border: 1px solid var(--border-color);
      background: #FFFFFF;
      color: var(--brand-indigo);
      font-size: 15px;
      font-weight: 600;
      padding: 13px 26px;
      border-radius: var(--radius);
    }
    .btn-outline:hover {
      border-color: var(--brand-indigo);
    }
    .hero-matrix {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 18px;
      border-top: 1px solid var(--border-color);
      padding-top: 36px;
    }
    .matrix-item {
      background: var(--bg-base);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 20px;
      transition: all 0.2s ease;
    }
    .matrix-item:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-sm);
    }
    .matrix-item .matrix-index {
      font-size: 13px;
      font-weight: 700;
      color: var(--brand-accent);
      margin-bottom: 6px;
    }
    .matrix-item h3 {
      font-size: 16px;
      font-weight: 700;
      color: var(--brand-indigo);
      margin-bottom: 8px;
    }
    .matrix-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块二：KPI 看板条 */
    .kpi-section {
      background: var(--bg-white);
      padding: 40px 0;
      border-bottom: 1px solid var(--border-color);
    }
    .kpi-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }
    .kpi-card {
      border-left: 3px solid var(--brand-accent);
      padding-left: 20px;
    }
    .kpi-number {
      font-size: 36px;
      font-weight: 800;
      color: var(--brand-indigo);
      line-height: 1.1;
      margin-bottom: 6px;
      font-feature-settings: "tnum";
    }
    .kpi-label {
      font-size: 14px;
      font-weight: 600;
      color: var(--text-main);
      margin-bottom: 4px;
    }
    .kpi-desc {
      font-size: 12px;
      color: var(--text-muted);
      line-height: 1.5;
    }

    /* 板块三：服务矩阵（专利类型卡片） */
    .products-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .product-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 30px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      transition: all 0.25s ease;
      box-shadow: var(--shadow-sm);
    }
    .product-card:hover {
      box-shadow: var(--shadow-md);
      border-color: var(--brand-indigo);
      transform: translateY(-3px);
    }
    .product-card h3 {
      font-size: 20px;
      color: var(--brand-indigo);
      margin-bottom: 12px;
      font-weight: 700;
    }
    .product-card .scope-desc {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      margin-bottom: 20px;
      min-height: 70px;
    }
    .meta-list {
      border-top: 1px dashed var(--border-color);
      padding-top: 16px;
      margin-bottom: 24px;
      display: flex;
      flex-direction: column;
      gap: 10px;
      font-size: 13px;
    }
    .meta-item {
      display: flex;
      justify-content: space-between;
    }
    .meta-item span:first-child {
      color: var(--text-muted);
    }
    .meta-item span:last-child {
      font-weight: 600;
      color: var(--text-main);
    }

    /* 板块四：结果对比（自主规范体系 vs 传统粗放代办） */
    .comparison-table-wrapper {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
    }
    .comparison-grid {
      display: grid;
      grid-template-columns: 2fr 3fr 3fr;
    }
    .comp-col-header {
      padding: 18px 24px;
      font-weight: 700;
      font-size: 15px;
      background: var(--bg-base);
      border-bottom: 1px solid var(--border-color);
    }
    .comp-col-header.highlight {
      background: var(--brand-indigo);
      color: #FFFFFF;
    }
    .comp-row {
      display: contents;
    }
    .comp-cell {
      padding: 18px 24px;
      border-bottom: 1px solid var(--border-color);
      font-size: 14px;
      line-height: 1.6;
    }
    .comp-row:last-child .comp-cell {
      border-bottom: none;
    }
    .comp-cell.feature-name {
      font-weight: 600;
      background: var(--bg-base);
      color: var(--brand-indigo);
    }
    .comp-cell.positive {
      background: rgba(29, 53, 87, 0.02);
      font-weight: 500;
      color: var(--text-main);
    }
    .comp-cell.negative {
      color: var(--text-muted);
    }

    /* 板块五：里程碑（专利申请标准化全链路） */
    .timeline-container {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
      position: relative;
    }
    .timeline-node {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 22px 18px;
      position: relative;
      transition: all 0.2s ease;
    }
    .timeline-node:hover {
      border-color: var(--brand-accent);
      transform: translateY(-2px);
    }
    .timeline-step {
      font-size: 11px;
      font-weight: 700;
      color: var(--brand-accent);
      margin-bottom: 8px;
      text-transform: uppercase;
    }
    .timeline-node h3 {
      font-size: 16px;
      color: var(--brand-indigo);
      font-weight: 700;
      margin-bottom: 10px;
    }
    .timeline-node p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块六：深色技术审查理念与授权案例背书 */
    .case-cards-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .case-dark-card {
      background: #1A1F26;
      border: 1px solid var(--border-dark);
      border-radius: var(--radius);
      padding: 26px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .case-tag {
      font-size: 12px;
      color: var(--brand-accent);
      margin-bottom: 8px;
      font-weight: 600;
    }
    .case-dark-card h3 {
      font-size: 18px;
      color: #FFFFFF;
      margin-bottom: 12px;
      font-weight: 600;
    }
    .case-dark-card p {
      font-size: 13px;
      color: rgba(255, 255, 255, 0.7);
      line-height: 1.7;
      margin-bottom: 20px;
    }
    .case-stat-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 12px;
      background: rgba(255, 255, 255, 0.06);
      padding: 6px 12px;
      border-radius: 4px;
      color: #FFFFFF;
      width: fit-content;
    }

    /* 板块七：图文叙事与专利前置审查规范 */
    .narrative-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      align-items: center;
    }
    .narrative-img-box {
      border-radius: var(--radius);
      overflow: hidden;
      border: 1px solid var(--border-color);
      box-shadow: var(--shadow-md);
    }
    .narrative-text-box h3 {
      font-size: 24px;
      color: var(--brand-indigo);
      margin-bottom: 16px;
      font-weight: 700;
    }
    .narrative-text-box p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 18px;
    }
    .check-list {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 12px;
      margin-top: 20px;
    }
    .check-item {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      font-size: 14px;
      color: var(--text-main);
    }
    .check-icon {
      color: var(--brand-accent);
      font-weight: 800;
      line-height: 1.4;
    }

    /* 板块八：资讯与实务指南 */
    .news-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .news-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      display: flex;
      flex-direction: column;
    }
    .news-img-box {
      height: 180px;
      overflow: hidden;
    }
    .news-img-box img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.3s ease;
    }
    .news-card:hover .news-img-box img {
      transform: scale(1.03);
    }
    .news-content {
      padding: 24px;
      flex-grow: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }
    .news-date {
      font-size: 12px;
      color: var(--text-muted);
      margin-bottom: 8px;
    }
    .news-content h3 {
      font-size: 17px;
      color: var(--brand-indigo);
      margin-bottom: 12px;
      font-weight: 700;
      line-height: 1.4;
    }
    .news-content p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块九：行业场景落地矩阵 */
    .scene-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .scene-card {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 22px;
    }
    .scene-card h3 {
      font-size: 16px;
      color: var(--brand-indigo);
      margin-bottom: 8px;
      font-weight: 700;
    }
    .scene-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块十：平台保障机制 */
    .guarantee-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .guarantee-item {
      background: var(--bg-base);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 24px;
      text-align: left;
    }
    .guarantee-badge {
      font-size: 12px;
      font-weight: 700;
      color: var(--brand-accent);
      margin-bottom: 8px;
    }
    .guarantee-item h3 {
      font-size: 17px;
      color: var(--brand-indigo);
      margin-bottom: 10px;
      font-weight: 700;
    }
    .guarantee-item p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块十一：安全与合规审计摘要列表 */
    .audit-box {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 32px;
      box-shadow: var(--shadow-sm);
    }
    .audit-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .audit-card h3 {
      font-size: 15px;
      color: var(--brand-indigo);
      margin-bottom: 8px;
      font-weight: 700;
    }
    .audit-card p {
      font-size: 13px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* 板块十二：快速解答（FAQ） */
    .faq-list {
      max-width: 900px;
      margin: 0 auto;
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .faq-item {
      background: var(--bg-white);
      border: 1px solid var(--border-color);
      border-radius: var(--radius);
      padding: 22px 26px;
    }
    .faq-q {
      font-size: 16px;
      font-weight: 700;
      color: var(--brand-indigo);
      margin-bottom: 10px;
      display: flex;
      align-items: center;
      gap: 10px;
    }
    .faq-q::before {
      content: "Q";
      color: var(--brand-accent);
      font-weight: 800;
      font-size: 18px;
    }
    .faq-a {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.75;
      padding-left: 24px;
    }

    /* 板块十三：终极可行性评估表单收口 */
    .action-panel {
      background: linear-gradient(135deg, #1D3557 0%, #112239 100%);
      border-radius: var(--radius);
      padding: 48px;
      color: #FFFFFF;
      display: grid;
      grid-template-columns: 3fr 2fr;
      gap: 40px;
      align-items: center;
    }
    .action-panel-text h2 {
      font-size: 28px;
      font-weight: 700;
      margin-bottom: 14px;
      line-height: 1.3;
      color: #FFFFFF;
    }
    .action-panel-text p {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.8);
      line-height: 1.7;
    }
    .form-container {
      background: #FFFFFF;
      padding: 28px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-md);
      color: var(--text-main);
    }
    .form-group {
      margin-bottom: 16px;
    }
    .form-group label {
      display: block;
      font-size: 13px;
      font-weight: 600;
      color: var(--brand-indigo);
      margin-bottom: 6px;
    }
    .form-control {
      width: 100%;
      padding: 10px 14px;
      border: 1px solid var(--border-color);
      border-radius: 4px;
      font-size: 14px;
      outline: none;
    }
    .form-control:focus {
      border-color: var(--brand-indigo);
    }
    .btn-submit {
      width: 100%;
      background: var(--brand-accent);
      color: #FFFFFF;
      padding: 12px;
      border: none;
      border-radius: 4px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      transition: background 0.2s ease;
    }
    .btn-submit:hover {
      background: var(--brand-accent-hover);
    }

    /* 底部固定转化条 */
    .fixed-floating-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background: rgba(17, 20, 24, 0.95);
      backdrop-filter: blur(10px);
      border-top: 1px solid rgba(255, 255, 255, 0.12);
      padding: 12px 0;
      z-index: 999;
      box-shadow: 0 -4px 16px rgba(0, 0, 0, 0.15);
    }
    .floating-bar-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 16px;
    }
    .floating-text {
      color: #FFFFFF;
      font-size: 14px;
    }
    .floating-text strong {
      color: var(--brand-accent);
    }
    .floating-actions {
      display: flex;
      gap: 12px;
      align-items: center;
    }
    .floating-btn {
      background: var(--brand-accent);
      color: #FFFFFF;
      font-size: 13px;
      font-weight: 600;
      padding: 8px 18px;
      border-radius: var(--radius);
    }
    .floating-close {
      color: rgba(255, 255, 255, 0.6);
      background: none;
      border: none;
      font-size: 16px;
      cursor: pointer;
      padding: 4px;
    }

    /* 页脚 */
    .site-footer {
      background: #0B0E11;
      color: rgba(255, 255, 255, 0.7);
      padding: 56px 0 88px 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 13px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 40px;
    }
    .footer-brand h4 {
      color: #FFFFFF;
      font-size: 18px;
      margin-bottom: 12px;
      font-weight: 700;
    }
    .footer-brand p {
      line-height: 1.7;
      max-width: 480px;
      margin-bottom: 14px;
    }
    .footer-col h5 {
      color: #FFFFFF;
      font-size: 14px;
      margin-bottom: 14px;
      font-weight: 600;
    }
    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 8px;
    }
    .footer-links a:hover {
      color: #FFFFFF;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 12px;
    }

    /* 响应式断点 */
    @media (max-width: 1024px) {
      .hero-matrix { grid-template-columns: repeat(2, 1fr); }
      .kpi-grid { grid-template-columns: repeat(2, 1fr); }
      .timeline-container { grid-template-columns: repeat(3, 1fr); }
      .scene-grid { grid-template-columns: repeat(2, 1fr); }
      .guarantee-grid { grid-template-columns: repeat(2, 1fr); }
      .narrative-split { grid-template-columns: 1fr; }
      .action-panel { grid-template-columns: 1fr; }
    }

    @media (max-width: 768px) {
      .hero-title { font-size: 30px; }
      .section-header h2 { font-size: 24px; }
      .nav-links { display: none; }
      .products-grid { grid-template-columns: 1fr; }
      .case-cards-grid { grid-template-columns: 1fr; }
      .news-grid { grid-template-columns: 1fr; }
      .audit-grid { grid-template-columns: 1fr; }
      .comparison-grid { grid-template-columns: 1fr; }
      .comp-col-header { display: none; }
      .timeline-container { grid-template-columns: 1fr; }
      .kpi-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr; }
      .floating-text { display: none; }
    }