/* roulang page: index */
:root {
      --bg-dark-1: #080C16;
      --bg-dark-2: #0D1527;
      --bg-card: rgba(16, 26, 48, 0.72);
      --bg-card-hover: rgba(22, 37, 68, 0.88);
      --primary-blue: #1A8CFF;
      --neon-cyan: #00F2FE;
      --accent-purple: #7B2CBF;
      --text-white: #FFFFFF;
      --text-muted: #B4C5E4;
      --border-glow: rgba(26, 140, 255, 0.24);
      --border-cyan: rgba(0, 242, 254, 0.35);
      --radius-sm: 8px;
      --radius-md: 14px;
      --radius-lg: 20px;
    }

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

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

    body {
      background: linear-gradient(180deg, var(--bg-dark-1) 0%, var(--bg-dark-2) 100%);
      background-color: var(--bg-dark-1);
      color: var(--text-muted);
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
      line-height: 1.75;
      overflow-x: hidden;
      min-height: 100vh;
    }

    a {
      color: var(--primary-blue);
      text-decoration: none;
      transition: all 0.3s ease;
    }
    a:hover, a:focus {
      color: var(--neon-cyan);
    }

    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-md);
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(8, 12, 22, 0.92);
      backdrop-filter: blur(16px);
      border-bottom: 1px solid var(--border-glow);
    }

    .top-notice-bar {
      background: rgba(26, 140, 255, 0.08);
      border-bottom: 1px solid rgba(26, 140, 255, 0.15);
      padding: 6px 0;
      font-size: 0.82rem;
      color: var(--neon-cyan);
    }

    .main-nav-bar {
      padding: 14px 0;
    }

    .brand-logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 1.35rem;
      font-weight: 700;
      color: var(--text-white);
      letter-spacing: 0.5px;
    }

    .brand-logo i {
      color: var(--neon-cyan);
      font-size: 1.5rem;
      filter: drop-shadow(0 0 8px rgba(0, 242, 254, 0.6));
    }

    .nav-links {
      display: flex;
      list-style: none;
      gap: 22px;
      margin: 0;
      align-items: center;
    }

    .nav-links a {
      color: var(--text-muted);
      font-size: 0.92rem;
      font-weight: 500;
      padding: 6px 4px;
      position: relative;
    }

    .nav-links a:hover, .nav-links a.active {
      color: var(--text-white);
    }

    .nav-links a::after {
      content: "";
      position: absolute;
      bottom: 0;
      left: 50%;
      width: 0;
      height: 2px;
      background: var(--neon-cyan);
      transition: all 0.3s ease;
      transform: translateX(-50%);
    }

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

    .sub-breadcrumb-strip {
      background: rgba(13, 21, 39, 0.85);
      border-bottom: 1px solid rgba(255, 255, 255, 0.05);
      padding: 8px 0;
      font-size: 0.8rem;
    }

    .btn-glow-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 28px;
      background: linear-gradient(135deg, var(--primary-blue) 0%, #00b4d8 100%);
      color: var(--text-white);
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 30px;
      box-shadow: 0 0 20px rgba(0, 242, 254, 0.35);
      border: 1px solid rgba(255, 255, 255, 0.2);
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    }

    .btn-glow-primary:hover {
      transform: translateY(-2px);
      box-shadow: 0 0 28px rgba(0, 242, 254, 0.6);
      color: var(--text-white);
    }

    .btn-glow-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 26px;
      background: rgba(16, 26, 48, 0.8);
      color: var(--neon-cyan);
      font-weight: 600;
      font-size: 0.95rem;
      border-radius: 30px;
      border: 1px solid var(--border-cyan);
      box-shadow: 0 0 12px rgba(26, 140, 255, 0.2);
      transition: all 0.3s ease;
    }

    .btn-glow-outline:hover {
      background: rgba(26, 140, 255, 0.2);
      color: var(--text-white);
      box-shadow: 0 0 20px rgba(26, 140, 255, 0.4);
    }

    .section-wrap {
      padding: 85px 0;
      position: relative;
    }

    .section-alt {
      background: rgba(13, 21, 39, 0.45);
      border-top: 1px solid rgba(26, 140, 255, 0.08);
      border-bottom: 1px solid rgba(26, 140, 255, 0.08);
    }

    .section-header {
      margin-bottom: 45px;
    }

    .section-badge {
      display: inline-block;
      padding: 4px 14px;
      background: rgba(0, 242, 254, 0.1);
      border: 1px solid var(--border-cyan);
      border-radius: 20px;
      font-size: 0.8rem;
      color: var(--neon-cyan);
      letter-spacing: 1px;
      text-transform: uppercase;
      margin-bottom: 12px;
    }

    .section-title {
      font-size: 2.1rem;
      color: var(--text-white);
      font-weight: 700;
      line-height: 1.35;
      margin-bottom: 14px;
    }

    .section-desc {
      font-size: 1rem;
      color: var(--text-muted);
      max-width: 860px;
      line-height: 1.8;
      margin: 0 auto;
    }

    .glass-card {
      background: var(--bg-card);
      backdrop-filter: blur(16px);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      padding: 30px 24px;
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4), 0 0 15px rgba(26, 140, 255, 0.08);
      transition: all 0.35s ease;
      height: 100%;
      position: relative;
      overflow: hidden;
    }

    .glass-card:hover {
      background: var(--bg-card-hover);
      transform: translateY(-5px);
      border-color: rgba(0, 242, 254, 0.4);
      box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 24px rgba(0, 242, 254, 0.2);
    }

    /* 英雄区特别样式 */
    .hero-section {
      padding: 90px 0 80px;
      position: relative;
      background-image: radial-gradient(circle at 50% 20%, rgba(26, 140, 255, 0.22) 0%, transparent 60%), url('/assets/images/ea0d257609f86752.jpg');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }

    .hero-overlay {
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(8, 12, 22, 0.88);
      z-index: 1;
    }

    .hero-content {
      position: relative;
      z-index: 2;
    }

    .hero-title {
      font-size: 3rem;
      font-weight: 800;
      color: var(--text-white);
      line-height: 1.25;
      margin-bottom: 22px;
      text-shadow: 0 0 25px rgba(26, 140, 255, 0.4);
    }

    .hero-p {
      font-size: 1.12rem;
      color: var(--text-muted);
      line-height: 1.85;
      max-width: 820px;
      margin: 0 auto 30px;
    }

    .hero-bullet-list {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 18px;
      margin-bottom: 35px;
    }

    .hero-bullet-item {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid rgba(255, 255, 255, 0.12);
      padding: 6px 16px;
      border-radius: 20px;
      font-size: 0.88rem;
      color: var(--text-white);
    }

    .hero-bullet-item i {
      color: var(--neon-cyan);
    }

    /* KPI 指标看板 */
    .kpi-row {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }

    .kpi-block {
      background: rgba(16, 26, 48, 0.8);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: center;
      position: relative;
    }

    .kpi-block::before {
      content: "";
      position: absolute;
      top: 0; left: 20%; right: 20%;
      height: 2px;
      background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
    }

    .kpi-num {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--neon-cyan);
      line-height: 1.2;
      margin-bottom: 6px;
      text-shadow: 0 0 15px rgba(0, 242, 254, 0.3);
    }

    .kpi-label {
      color: var(--text-muted);
      font-size: 0.9rem;
    }

    /* 工作流步骤条 */
    .flow-steps-grid {
      display: grid;
      grid-template-columns: repeat(5, 1fr);
      gap: 16px;
      position: relative;
    }

    .step-box {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      padding: 24px 18px;
      position: relative;
      text-align: center;
    }

    .step-box .step-idx {
      width: 42px;
      height: 42px;
      margin: 0 auto 16px;
      background: linear-gradient(135deg, var(--primary-blue), var(--accent-purple));
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-weight: 700;
      font-size: 1.1rem;
      box-shadow: 0 0 12px rgba(26, 140, 255, 0.4);
    }

    .step-box h4 {
      font-size: 1.05rem;
      color: var(--text-white);
      margin-bottom: 10px;
    }

    .step-box p {
      font-size: 0.86rem;
      line-height: 1.6;
      color: var(--text-muted);
    }

    /* 案例卡片与分类 */
    .case-card {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .case-card-img-wrap {
      height: 190px;
      overflow: hidden;
      position: relative;
    }

    .case-card-img-wrap img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
      border-radius: 0;
    }

    .case-card:hover .case-card-img-wrap img {
      transform: scale(1.06);
    }

    .case-badge {
      position: absolute;
      top: 12px;
      right: 12px;
      background: rgba(8, 12, 22, 0.85);
      border: 1px solid var(--neon-cyan);
      color: var(--neon-cyan);
      padding: 3px 10px;
      font-size: 0.75rem;
      border-radius: 12px;
    }

    .case-card-body {
      padding: 22px;
      flex: 1;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
    }

    .case-card-body h4 {
      font-size: 1.15rem;
      color: var(--text-white);
      margin-bottom: 10px;
    }

    .case-card-body p {
      font-size: 0.88rem;
      color: var(--text-muted);
      line-height: 1.65;
    }

    .case-stat-pill {
      margin-top: 14px;
      padding-top: 12px;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      font-size: 0.82rem;
      color: var(--neon-cyan);
      display: flex;
      justify-content: space-between;
    }

    /* 对比表格 */
    .compare-table {
      width: 100%;
      border-collapse: separate;
      border-spacing: 0;
      background: var(--bg-card);
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-glow);
    }

    .compare-table th {
      background: rgba(26, 140, 255, 0.15);
      color: var(--text-white);
      padding: 16px 20px;
      font-size: 0.95rem;
      font-weight: 600;
      text-align: left;
    }

    .compare-table td {
      padding: 16px 20px;
      font-size: 0.88rem;
      color: var(--text-muted);
      border-top: 1px solid rgba(255, 255, 255, 0.06);
    }

    .compare-table tr:hover td {
      background: rgba(26, 140, 255, 0.05);
    }

    .compare-highlight {
      color: var(--neon-cyan);
      font-weight: 600;
    }

    /* FAQ 手风琴美化 */
    .accordion-item-wrap {
      background: var(--bg-card);
      border: 1px solid var(--border-glow);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
    }

    .faq-question-btn {
      width: 100%;
      text-align: left;
      padding: 18px 22px;
      background: transparent;
      border: none;
      color: var(--text-white);
      font-size: 1.02rem;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .faq-question-btn i {
      color: var(--neon-cyan);
      transition: transform 0.3s ease;
    }

    .faq-answer-block {
      padding: 0 22px 20px;
      font-size: 0.9rem;
      color: var(--text-muted);
      line-height: 1.75;
      display: none;
      border-top: 1px solid rgba(255, 255, 255, 0.04);
    }

    .faq-answer-block.is-active {
      display: block;
    }

    /* 表单与保障区 */
    .contact-card-box {
      background: var(--bg-card);
      border: 1px solid var(--border-cyan);
      box-shadow: 0 0 35px rgba(26, 140, 255, 0.15);
      border-radius: var(--radius-lg);
      padding: 40px 35px;
    }

    .form-custom-control {
      background: rgba(8, 12, 22, 0.7);
      border: 1px solid rgba(26, 140, 255, 0.3);
      border-radius: 8px;
      padding: 12px 16px;
      color: #fff;
      font-size: 0.9rem;
      margin-bottom: 18px;
      width: 100%;
      outline: none;
    }

    .form-custom-control:focus {
      border-color: var(--neon-cyan);
      box-shadow: 0 0 10px rgba(0, 242, 254, 0.4);
    }

    /* 合作伙伴矩阵 */
    .partner-grid-box {
      display: grid;
      grid-template-columns: repeat(6, 1fr);
      gap: 16px;
    }

    .partner-cell {
      background: rgba(16, 26, 48, 0.4);
      border: 1px solid rgba(255, 255, 255, 0.07);
      padding: 18px 10px;
      border-radius: var(--radius-sm);
      text-align: center;
      font-size: 0.88rem;
      color: var(--text-muted);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      gap: 8px;
      transition: all 0.3s ease;
    }

    .partner-cell i {
      font-size: 1.6rem;
      color: rgba(255, 255, 255, 0.6);
    }

    .partner-cell:hover {
      border-color: var(--neon-cyan);
      color: #fff;
    }

    .partner-cell:hover i {
      color: var(--neon-cyan);
    }

    /* 页脚 */
    .site-footer {
      background: #04070D;
      border-top: 1px solid rgba(26, 140, 255, 0.18);
      padding: 60px 0 30px;
      font-size: 0.88rem;
    }

    .footer-col h5 {
      color: var(--text-white);
      font-size: 1.05rem;
      margin-bottom: 18px;
      font-weight: 600;
    }

    .footer-col ul {
      list-style: none;
      margin: 0;
    }

    .footer-col li {
      margin-bottom: 10px;
    }

    .footer-col a {
      color: var(--text-muted);
      font-size: 0.88rem;
    }

    .footer-col a:hover {
      color: var(--neon-cyan);
    }

    .copyright-strip {
      border-top: 1px solid rgba(255, 255, 255, 0.06);
      padding-top: 25px;
      margin-top: 40px;
      font-size: 0.82rem;
      color: #7184A3;
      text-align: center;
    }

    /* 响应式断点控制 */
    @media (max-width: 1024px) {
      .kpi-row { grid-template-columns: repeat(2, 1fr); }
      .flow-steps-grid { grid-template-columns: repeat(3, 1fr); }
      .partner-grid-box { grid-template-columns: repeat(3, 1fr); }
    }

    @media (max-width: 768px) {
      .hero-title { font-size: 2.1rem; }
      .section-title { font-size: 1.65rem; }
      .flow-steps-grid { grid-template-columns: 1fr; }
      .kpi-row { grid-template-columns: 1fr; }
      .partner-grid-box { grid-template-columns: repeat(2, 1fr); }
      .nav-links { display: none; }
      .contact-card-box { padding: 25px 18px; }
    }