/* roulang page: index */
/* 全局设计变量与重置 */
    :root {
      --warm-stone: #F5F0EB;
      --deep-charcoal: #2C2C2C;
      --bronze-gold: #B8864D;
      --pale-ivory: #FAF7F2;
      --forest-green: #2F4F4F;
      --text-muted: #6B625A;
      --border-light: rgba(184, 134, 77, 0.2);
      --shadow-sm: 0px 4px 20px rgba(44, 44, 44, 0.04);
      --shadow-md: 0px 8px 30px rgba(44, 44, 44, 0.08);
      --radius-card: 12px;
      --radius-button: 8px;
      --radius-pill: 40px;
      --radius-dashboard: 16px;
      --transition-smooth: 0.2s ease;
      --font-serif: 'Cormorant Garamond', 'Noto Serif SC', serif;
      --font-sans: 'Inter', 'Noto Sans SC', sans-serif;
      --font-mono: 'DM Mono', 'JetBrains Mono', monospace;
      --max-width: 1280px;
      --section-gap: 120px;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--warm-stone);
      color: var(--deep-charcoal);
      line-height: 1.75;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      background-image: radial-gradient(circle at 20% 30%, rgba(245, 240, 235, 0.4) 0%, transparent 50%);
      background-attachment: fixed;
    }

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

    h1, h2, h3 {
      font-family: var(--font-serif);
      font-weight: 600;
    }

    h1 {
      font-size: clamp(3rem, 6vw, 4.5rem);
      line-height: 1.2;
      color: var(--deep-charcoal);
      letter-spacing: -0.5px;
    }

    h2 {
      font-size: 2.5rem;
      margin-bottom: 1.5rem;
      color: var(--deep-charcoal);
      position: relative;
      display: inline-block;
    }

    h2::after {
      content: '';
      position: absolute;
      bottom: -8px;
      left: 0;
      width: 60px;
      height: 2px;
      background-color: var(--bronze-gold);
    }

    h3 {
      font-size: 1.5rem;
      color: var(--deep-charcoal);
    }

    p {
      max-width: 68ch;
      color: var(--text-muted);
    }

    a {
      color: var(--bronze-gold);
      text-decoration: none;
      transition: var(--transition-smooth);
    }

    a:hover {
      text-decoration: underline;
    }

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

    button, .btn {
      cursor: pointer;
      font-family: var(--font-sans);
      font-weight: 500;
      transition: var(--transition-smooth);
    }

    /* 导航悬浮胶囊 */
    .nav-capsule {
      position: fixed;
      top: 20px;
      left: 50%;
      transform: translateX(-50%);
      width: auto;
      max-width: 90%;
      background: rgba(245, 240, 235, 0.85);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: var(--radius-pill);
      padding: 8px 32px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      box-shadow: 0px 10px 25px rgba(44, 44, 44, 0.05);
      z-index: 1000;
      border: 1px solid rgba(184, 134, 77, 0.15);
    }

    .logo {
      font-family: var(--font-serif);
      font-size: 1.8rem;
      font-weight: 600;
      color: var(--bronze-gold);
      letter-spacing: 1px;
      margin-right: 24px;
    }

    .nav-links {
      display: flex;
      gap: 28px;
      align-items: center;
    }

    .nav-links a {
      color: var(--deep-charcoal);
      font-weight: 500;
      font-size: 0.95rem;
      position: relative;
      padding: 4px 0;
      text-decoration: none;
    }

    .nav-links a:hover {
      color: var(--bronze-gold);
      text-decoration: none;
    }

    .nav-links a.active {
      color: var(--bronze-gold);
    }

    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 50%;
      transform: translateX(-50%);
      width: 6px;
      height: 6px;
      background: var(--bronze-gold);
      border-radius: 50%;
    }

    .hamburger {
      display: none;
      background: none;
      border: none;
      font-size: 1.6rem;
      color: var(--deep-charcoal);
      padding: 8px;
    }

    /* 按钮系统 */
    .btn-primary {
      background: var(--bronze-gold);
      color: #FFFFFF;
      border: none;
      border-radius: var(--radius-button);
      padding: 14px 32px;
      font-weight: 600;
      font-size: 1rem;
      display: inline-block;
      box-shadow: 0 4px 12px rgba(184, 134, 77, 0.25);
      text-decoration: none;
    }

    .btn-primary:hover {
      background: #9A6D3D;
      text-decoration: none;
      color: #fff;
    }

    .btn-secondary {
      background: transparent;
      color: var(--bronze-gold);
      border: 1.5px solid var(--bronze-gold);
      border-radius: var(--radius-button);
      padding: 12px 28px;
      font-weight: 600;
      display: inline-block;
      text-decoration: none;
    }

    .btn-secondary:hover {
      background: rgba(184, 134, 77, 0.1);
      text-decoration: none;
    }

    .text-link {
      color: var(--bronze-gold);
      font-weight: 500;
      border-bottom: 1px solid transparent;
      transition: var(--transition-smooth);
    }

    .text-link:hover {
      border-bottom: 1px solid var(--bronze-gold);
      text-decoration: none;
    }

    /* 板块通用间距 */
    section {
      padding: var(--section-gap) 0;
    }

    /* Hero 区域 */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      background-blend-mode: overlay;
      background-color: rgba(245, 240, 235, 0.7);
      position: relative;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }

    .hero-left h1 {
      margin-bottom: 1.5rem;
    }

    .hero-left .subtitle {
      font-size: 1.25rem;
      color: var(--text-muted);
      margin-bottom: 2rem;
      max-width: 90%;
    }

    .dashboard {
      background: var(--deep-charcoal);
      border-radius: var(--radius-dashboard);
      padding: 40px;
      color: var(--pale-ivory);
      box-shadow: var(--shadow-md);
    }

    .metric-row {
      display: flex;
      justify-content: space-between;
      margin-bottom: 28px;
    }

    .metric-row:last-child {
      margin-bottom: 0;
    }

    .metric-value {
      font-family: var(--font-mono);
      font-size: 2.4rem;
      color: var(--bronze-gold);
      font-weight: 400;
      line-height: 1.2;
    }

    .metric-label {
      font-size: 0.9rem;
      color: var(--pale-ivory);
      opacity: 0.8;
      text-transform: uppercase;
      letter-spacing: 0.5px;
    }

    /* 服务矩阵卡片 */
    .services-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 3rem;
    }

    .service-card {
      background: var(--pale-ivory);
      padding: 32px;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-sm);
      transition: var(--transition-smooth);
      border-bottom: 3px solid transparent;
      display: flex;
      flex-direction: column;
    }

    .service-card:hover {
      box-shadow: var(--shadow-md);
      border-bottom: 3px solid var(--bronze-gold);
      transform: translateY(-4px);
    }

    .service-icon {
      font-size: 2.2rem;
      color: var(--bronze-gold);
      margin-bottom: 1.5rem;
    }

    .service-card h3 {
      margin-bottom: 0.75rem;
    }

    .service-desc {
      color: var(--text-muted);
      margin-bottom: 1.5rem;
      flex-grow: 1;
    }

    .service-data {
      font-family: var(--font-mono);
      color: var(--bronze-gold);
      font-weight: 500;
      margin-bottom: 1.5rem;
      font-size: 1.1rem;
    }

    /* 结果对比 */
    .comparison-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      margin-top: 2rem;
      position: relative;
    }

    .comparison-col {
      padding: 32px;
      background: var(--pale-ivory);
      border-radius: var(--radius-card);
    }

    .comparison-col h3 {
      margin-bottom: 1.5rem;
    }

    .comparison-list {
      list-style: none;
    }

    .comparison-list li {
      margin-bottom: 1rem;
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .pain-point li i {
      color: #A9A9A9;
    }

    .solution-point li i {
      color: var(--bronze-gold);
    }

    .divider-vertical {
      position: absolute;
      left: 50%;
      top: 10%;
      height: 80%;
      width: 1px;
      background: linear-gradient(to bottom, transparent, var(--bronze-gold), transparent);
      display: block;
    }

    /* 流程步骤 */
    .steps-container {
      display: flex;
      justify-content: space-between;
      margin-top: 3rem;
      gap: 24px;
    }

    .step-item {
      text-align: center;
      flex: 1;
    }

    .step-icon {
      font-size: 2.5rem;
      color: var(--bronze-gold);
      margin-bottom: 1rem;
    }

    .step-number {
      font-family: var(--font-mono);
      color: var(--bronze-gold);
      font-weight: 600;
    }

    /* FAQ 手风琴 */
    .faq-container {
      max-width: 800px;
      margin: 3rem auto 0;
    }

    .faq-item {
      border-bottom: 1px solid var(--border-light);
      padding: 18px 0;
    }

    .faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      font-family: var(--font-serif);
      font-size: 1.4rem;
      font-weight: 600;
      padding-left: 16px;
      border-left: 3px solid var(--bronze-gold);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
      background: rgba(250, 247, 242, 0.6);
      border-radius: 8px;
      margin-top: 8px;
    }

    .faq-answer.open {
      max-height: 300px;
    }

    .faq-answer p {
      padding: 20px;
      margin: 0;
    }

    .faq-icon {
      font-size: 1.5rem;
      color: var(--bronze-gold);
    }

    /* CTA 表单区 */
    .cta-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 48px;
      margin-top: 2rem;
    }

    .form-group {
      margin-bottom: 1.5rem;
    }

    .form-group input, .form-group textarea {
      width: 100%;
      border: none;
      border-bottom: 1px solid #D1C7BD;
      padding: 12px 0;
      font-family: var(--font-sans);
      background: transparent;
      transition: var(--transition-smooth);
      font-size: 1rem;
    }

    .form-group input:focus, .form-group textarea:focus {
      outline: none;
      border-bottom: 2px solid var(--bronze-gold);
    }

    .trust-badges img {
      width: 80px;
      height: auto;
      opacity: 0.8;
      margin-right: 16px;
      display: inline-block;
    }

    /* 页脚 */
    .footer {
      background: var(--deep-charcoal);
      color: var(--pale-ivory);
      padding: 60px 0 30px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 32px;
    }

    .footer-logo {
      font-family: var(--font-serif);
      font-size: 2rem;
      color: var(--bronze-gold);
    }

    /* 响应式 */
    @media (max-width: 1024px) {
      .hero-grid, .services-grid, .comparison-grid, .cta-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .divider-vertical {
        display: none;
      }
      .nav-links {
        display: none;
      }
      .hamburger {
        display: block;
      }
      .mobile-menu.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(245,240,235,0.95);
        border-radius: 24px;
        padding: 24px;
        gap: 16px;
      }
      .steps-container {
        flex-direction: column;
      }
    }

    @media (max-width: 640px) {
      .nav-capsule {
        padding: 8px 20px;
      }
      .dashboard {
        padding: 24px;
      }
      .metric-value {
        font-size: 1.8rem;
      }
      section {
        padding: 80px 0;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
    }