/* roulang page: index */
:root {
      --primary-deep: #1A1A1A;
      --gold-accent: #D4AF37;
      --gold-hover: #C49B2A;
      --bg-warm: #FAFAFA;
      --card-bg: #FFFFFF;
      --dark-section: #2C2C2C;
      --text-body: #5A5A5A;
      --text-muted: #8A8A8A;
      --border-light: #E0E0E0;
      --shadow-card: 0 2px 12px rgba(0,0,0,0.04);
      --shadow-hover: 0 8px 24px rgba(0,0,0,0.08);
      --radius-card: 8px;
      --radius-btn: 4px;
      --font-sans: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
      --font-number: 'Inter', 'Roboto', 'PingFang SC', sans-serif;
      --transition-smooth: 0.25s ease;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-body);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 导航杂志频道式 */
    .brand-bar {
      background: #fff;
      border-bottom: 1px solid #f0f0f0;
      padding: 12px 0;
    }
    .brand-bar .container {
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .logo {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--gold-accent);
      letter-spacing: 1px;
      text-decoration: none;
      line-height: 1.2;
    }
    .logo span {
      font-weight: 400;
      color: var(--primary-deep);
    }
    .brand-actions {
      display: flex;
      gap: 20px;
      align-items: center;
      color: var(--text-muted);
    }
    .brand-actions i {
      font-size: 1.2rem;
      cursor: pointer;
      transition: color var(--transition-smooth);
    }
    .brand-actions i:hover {
      color: var(--gold-accent);
    }
    .channel-bar {
      background: #fff;
      border-bottom: 1px solid #f0f0f0;
      padding: 8px 0;
      box-shadow: 0 2px 4px rgba(0,0,0,0.02);
    }
    .channel-links {
      display: flex;
      gap: 32px;
      flex-wrap: wrap;
    }
    .channel-links a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--primary-deep);
      text-decoration: none;
      padding-bottom: 4px;
      border-bottom: 2px solid transparent;
      transition: all var(--transition-smooth);
      letter-spacing: 0.3px;
    }
    .channel-links a:hover,
    .channel-links a.active {
      color: var(--gold-accent);
      border-bottom-color: var(--gold-accent);
    }
    .hamburger {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      color: var(--primary-deep);
      cursor: pointer;
    }
    /* Hero */
    #hero {
      background: linear-gradient(rgba(26,26,26,0.82), rgba(26,26,26,0.88)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      color: #fff;
      padding: 140px 0 120px;
      text-align: left;
      position: relative;
    }
    .hero-content {
      max-width: 700px;
    }
    h1 {
      font-size: 2.8rem;
      font-weight: 700;
      letter-spacing: -0.5px;
      color: #fff;
      line-height: 1.3;
      margin-bottom: 1.2rem;
    }
    .hero-sub {
      font-size: 1.2rem;
      color: rgba(255,255,255,0.85);
      margin-bottom: 2.5rem;
      line-height: 1.6;
    }
    .btn-group {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--gold-accent);
      color: var(--primary-deep);
      font-weight: 600;
      padding: 14px 32px;
      border-radius: var(--radius-btn);
      text-decoration: none;
      text-transform: uppercase;
      letter-spacing: 1px;
      font-size: 0.9rem;
      border: none;
      transition: background var(--transition-smooth), transform var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-primary:hover {
      background: var(--gold-hover);
      color: #000;
      transform: translateY(-1px);
    }
    .btn-outline-light {
      background: transparent;
      border: 1px solid #fff;
      color: #fff;
      font-weight: 600;
      padding: 14px 28px;
      border-radius: var(--radius-btn);
      text-decoration: none;
      letter-spacing: 1px;
      font-size: 0.9rem;
      transition: all var(--transition-smooth);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-outline-light:hover {
      background: #fff;
      color: var(--primary-deep);
    }
    /* 板块间距 */
    section {
      padding: 100px 0;
    }
    h2 {
      font-size: 2rem;
      font-weight: 600;
      color: var(--primary-deep);
      margin-bottom: 2.5rem;
      text-align: center;
    }
    /* 指标看板 */
    .metrics-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
      margin-top: 2rem;
    }
    .metric-card {
      background: #F5F5F5;
      padding: 28px 20px;
      border-radius: var(--radius-card);
      text-align: center;
      transition: all var(--transition-smooth);
      border: 1px solid transparent;
    }
    .metric-card:hover {
      border-color: var(--gold-accent);
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }
    .metric-number {
      font-family: var(--font-number);
      font-size: 3rem;
      font-weight: 700;
      color: var(--gold-accent);
      line-height: 1.1;
    }
    .metric-label {
      font-size: 0.9rem;
      color: var(--text-muted);
      margin-top: 8px;
    }
    /* 服务矩阵 2x3 */
    .service-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
    }
    .service-card {
      background: var(--card-bg);
      padding: 32px 24px;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-card);
      transition: all var(--transition-smooth);
      border-bottom: 3px solid var(--gold-accent);
      display: flex;
      flex-direction: column;
    }
    .service-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-5px);
      border-bottom-color: var(--gold-hover);
    }
    .service-icon {
      width: 64px;
      height: 64px;
      margin-bottom: 20px;
      border-radius: 12px;
      object-fit: cover;
      background: #f0f0f0;
    }
    .service-card h3 {
      font-size: 1.4rem;
      font-weight: 600;
      color: var(--primary-deep);
      margin-bottom: 12px;
    }
    .service-desc {
      color: var(--text-body);
      font-size: 0.95rem;
      margin-bottom: 20px;
      flex: 1;
    }
    .fake-link {
      color: var(--gold-accent);
      font-weight: 600;
      font-size: 0.9rem;
      text-decoration: none;
      display: inline-flex;
      align-items: center;
      gap: 4px;
      transition: gap var(--transition-smooth);
    }
    .fake-link:hover {
      gap: 8px;
      color: var(--gold-hover);
    }
    /* 对比表 */
    .compare-wrapper {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      background: #fff;
      border-radius: var(--radius-card);
      padding: 40px;
      box-shadow: var(--shadow-card);
    }
    .compare-col {
      padding: 24px;
      border-radius: 12px;
    }
    .compare-col.left {
      background: #f9f9f9;
      border: 1px solid #eee;
    }
    .compare-col.right {
      background: #FFFBF0;
      border: 1px solid var(--gold-accent);
    }
    .compare-col h3 {
      font-size: 1.5rem;
      margin-bottom: 20px;
      color: var(--primary-deep);
    }
    .compare-list {
      list-style: none;
    }
    .compare-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      font-size: 0.95rem;
    }
    .icon-fail {
      color: #C0392B;
    }
    .icon-success {
      color: var(--gold-accent);
    }
    .compare-note {
      margin-top: 20px;
      font-size: 0.8rem;
      color: var(--text-muted);
    }
    /* FAQ */
    .accordion {
      max-width: 860px;
      margin: 0 auto;
    }
    .accordion-item {
      background: #fff;
      border-radius: 8px;
      margin-bottom: 12px;
      box-shadow: 0 1px 4px rgba(0,0,0,0.02);
    }
    .accordion-title {
      font-weight: 600;
      font-size: 1.05rem;
      color: var(--primary-deep);
      padding: 18px 24px;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      border-bottom: 1px solid transparent;
      transition: all var(--transition-smooth);
    }
    .accordion-title:hover {
      color: var(--gold-accent);
    }
    .accordion-title[aria-expanded="true"] {
      color: var(--gold-accent);
      border-bottom-color: #f0f0f0;
    }
    .accordion-content {
      padding: 0 24px 20px;
      color: var(--text-body);
      display: none;
    }
    .accordion-content.show {
      display: block;
    }
    /* 转化CTA */
    .cta-dark {
      background: var(--dark-section);
      color: #fff;
      padding: 80px 0;
    }
    .cta-card {
      background: #fff;
      border-radius: var(--radius-card);
      padding: 48px;
      box-shadow: 0 12px 28px rgba(0,0,0,0.15);
      display: grid;
      grid-template-columns: 1fr 1.3fr;
      gap: 40px;
      align-items: center;
    }
    .cta-left h3 {
      font-size: 1.8rem;
      color: var(--primary-deep);
      font-weight: 600;
    }
    .cta-left p {
      color: var(--text-body);
    }
    .contact-form input {
      margin-bottom: 16px;
      border: 1px solid #ddd;
      border-radius: var(--radius-btn);
      padding: 12px;
      width: 100%;
      transition: border var(--transition-smooth);
    }
    .contact-form input:focus {
      border-color: var(--gold-accent);
      outline: none;
    }
    .btn-full {
      width: 100%;
      background: var(--gold-accent);
      color: #000;
      font-weight: 700;
      padding: 14px;
      border: none;
      border-radius: var(--radius-btn);
      text-transform: uppercase;
      letter-spacing: 1px;
      cursor: pointer;
      transition: background var(--transition-smooth);
    }
    .btn-full:hover {
      background: var(--gold-hover);
    }
    /* 页脚 */
    .footer {
      background: #fff;
      padding: 60px 0 20px;
      border-top: 1px solid #eee;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 30px;
      margin-bottom: 40px;
    }
    .footer-logo {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--gold-accent);
    }
    .social-icons i {
      font-size: 1.3rem;
      margin-right: 16px;
      color: var(--text-muted);
      transition: color var(--transition-smooth);
    }
    .social-icons i:hover {
      color: var(--gold-accent);
    }
    .copyright {
      text-align: center;
      color: var(--text-muted);
      font-size: 0.85rem;
      border-top: 1px solid #f0f0f0;
      padding-top: 20px;
    }
    @media (max-width: 1024px) {
      .metrics-grid { grid-template-columns: repeat(2,1fr); }
      .service-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 768px) {
      .channel-links { display: none; flex-direction: column; background: #fff; position: absolute; top: 100%; left: 0; width: 100%; padding: 20px; box-shadow: 0 8px 16px rgba(0,0,0,0.1); }
      .channel-links.open { display: flex; }
      .hamburger { display: block; }
      .channel-bar .container { position: relative; }
      .metrics-grid { grid-template-columns: 1fr 1fr; }
      .service-grid { grid-template-columns: 1fr; }
      .compare-wrapper { grid-template-columns: 1fr; }
      .cta-card { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }
    @media (max-width: 520px) {
      .metrics-grid { grid-template-columns: 1fr; }
      .btn-group { flex-direction: column; }
    }