/* roulang page: index */
:root {
      --primary-deep: #3B3534;
      --accent-terra: #C2765B;
      --cta-gold: #D49A3E;
      --bg-warm: #FAF7F2;
      --card-white: #FFFFFF;
      --card-alt-bg: #F5F1EC;
      --text-dark: #2C2827;
      --text-muted: #7A726E;
      --border-soft: #E5E0DA;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-pill: 6px;
      --shadow-light: 0 2px 16px rgba(59, 53, 52, 0.06);
      --shadow-hover: 0 12px 28px rgba(59, 53, 52, 0.1);
      --transition-smooth: all 0.25s ease;
      --font-serif: 'Noto Serif SC', 'Source Han Serif SC', serif;
      --font-sans: 'Noto Sans SC', 'Source Han Sans SC', 'PingFang SC', sans-serif;
      --font-number: 'Inter', 'SF Pro Display', sans-serif;
    }

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

    body {
      font-family: var(--font-sans);
      background-color: var(--bg-warm);
      color: var(--text-dark);
      line-height: 1.7;
      font-size: 1rem;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

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

    button {
      font-family: inherit;
      cursor: pointer;
      border: none;
      background: transparent;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* 导航栏双层结构 */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: #FFFFFF;
      z-index: 100;
      border-bottom: 1px solid var(--border-soft);
      box-shadow: 0 1px 6px rgba(59, 53, 52, 0.04);
    }

    .nav-row-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 56px;
      padding: 0 1.5rem;
      max-width: 1200px;
      margin: 0 auto;
    }

    .logo {
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 1.6rem;
      letter-spacing: -0.5px;
      color: var(--primary-deep);
    }
    .logo span {
      font-weight: 400;
      color: var(--text-muted);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 1.2rem;
    }

    .search-icon {
      color: var(--text-muted);
      font-size: 1.2rem;
      background: transparent;
      border: none;
      cursor: pointer;
      transition: var(--transition-smooth);
    }
    .search-icon:hover {
      color: var(--accent-terra);
    }

    .btn-cta-nav {
      background: var(--cta-gold);
      color: white;
      padding: 0.45rem 1.3rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      font-size: 0.9rem;
      transition: var(--transition-smooth);
      display: inline-block;
    }
    .btn-cta-nav:hover {
      background: #B8832E;
      transform: translateY(-1px);
      box-shadow: 0 4px 10px rgba(212, 154, 62, 0.3);
    }

    .nav-row-channels {
      background: #FFFFFF;
      border-top: 1px solid var(--border-soft);
      padding: 0 1.5rem;
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      align-items: center;
      height: 44px;
      overflow-x: auto;
      white-space: nowrap;
      gap: 0.5rem;
      scrollbar-width: thin;
      -webkit-overflow-scrolling: touch;
    }

    .channel-pill {
      display: inline-block;
      padding: 0.35rem 1rem;
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-muted);
      background: transparent;
      border-radius: 20px;
      transition: var(--transition-smooth);
      position: relative;
    }
    .channel-pill:hover {
      background: #F5F1EC;
      color: var(--primary-deep);
    }
    .channel-pill.active {
      color: var(--accent-terra);
      font-weight: 600;
    }
    .channel-pill.active::after {
      content: '';
      position: absolute;
      bottom: -9px;
      left: 50%;
      transform: translateX(-50%);
      width: 18px;
      height: 2px;
      background: var(--accent-terra);
      border-radius: 2px;
    }

    /* Hero */
    #hero {
      padding: 130px 0 70px;
      min-height: 85vh;
      display: flex;
      align-items: center;
      background: var(--bg-warm);
    }
    .hero-grid {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 2.5rem;
    }
    .hero-text {
      flex: 1 1 55%;
    }
    .hero-image {
      flex: 1 1 40%;
    }
    .hero-image img {
      border-radius: 16px;
      box-shadow: var(--shadow-light);
    }
    h1 {
      font-family: var(--font-serif);
      font-size: 3.2rem;
      font-weight: 700;
      line-height: 1.15;
      color: var(--primary-deep);
      margin-bottom: 1rem;
    }
    .hero-sub {
      font-size: 1.25rem;
      color: var(--text-muted);
      margin-bottom: 1.8rem;
      max-width: 500px;
    }
    .hero-stats {
      display: flex;
      gap: 2rem;
      margin: 2rem 0 2.2rem;
      flex-wrap: wrap;
    }
    .stat-item {
      display: flex;
      align-items: baseline;
      gap: 0.2rem;
    }
    .stat-number {
      font-family: var(--font-number);
      font-size: 2rem;
      font-weight: 600;
      color: var(--cta-gold);
    }
    .stat-label {
      font-size: 0.9rem;
      color: var(--text-muted);
    }
    .btn-group {
      display: flex;
      gap: 1rem;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--cta-gold);
      color: white;
      padding: 0.8rem 2rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: var(--transition-smooth);
      display: inline-block;
    }
    .btn-primary:hover {
      background: #B8832E;
      transform: translateY(-2px);
      box-shadow: 0 8px 18px rgba(212, 154, 62, 0.35);
    }
    .btn-outline {
      background: transparent;
      border: 1px solid var(--accent-terra);
      color: var(--accent-terra);
      padding: 0.8rem 2rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: var(--transition-smooth);
    }
    .btn-outline:hover {
      background: var(--accent-terra);
      color: white;
      transform: translateY(-2px);
    }

    /* 通用板块 */
    section {
      padding: 90px 0;
    }
    .section-title {
      font-family: var(--font-serif);
      font-size: 2.4rem;
      font-weight: 600;
      color: var(--primary-deep);
      margin-bottom: 0.75rem;
    }
    .section-desc {
      color: var(--text-muted);
      max-width: 600px;
      margin-bottom: 3rem;
    }

    /* 痛点卡片 */
    .pain-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 1.5rem;
      margin-top: 1.5rem;
    }
    .pain-card {
      background: var(--card-white);
      padding: 1.8rem;
      border-radius: var(--radius-card);
      box-shadow: var(--shadow-light);
      flex: 1 1 250px;
      display: flex;
      align-items: center;
      gap: 1rem;
      transition: var(--transition-smooth);
    }
    .pain-card i {
      font-size: 2rem;
      color: var(--accent-terra);
    }

    /* 解决方案卡片 */
    .solution-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
    }
    .solution-card {
      background: var(--card-white);
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-light);
      flex: 1 1 260px;
      transition: var(--transition-smooth);
    }
    .solution-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .solution-img {
      height: 200px;
      background-size: cover;
      background-position: center;
    }
    .solution-content {
      padding: 1.8rem;
    }
    .solution-content h3 {
      font-family: var(--font-serif);
      font-weight: 600;
    }
    .micro-cta {
      color: var(--accent-terra);
      font-weight: 600;
      margin-top: 0.8rem;
      display: inline-block;
    }

    /* 成果数据 */
    .outcome-board {
      background: var(--card-white);
      border-radius: var(--radius-card);
      padding: 2.5rem;
      display: flex;
      flex-wrap: wrap;
      justify-content: space-around;
      gap: 2rem;
      box-shadow: var(--shadow-light);
      margin-top: 1rem;
    }
    .big-number {
      font-family: var(--font-number);
      font-size: 3.8rem;
      font-weight: 300;
      color: var(--cta-gold);
    }

    /* 证言错落 */
    .testimonial-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      align-items: flex-start;
    }
    .testimonial-card {
      background: var(--card-white);
      border-radius: var(--radius-card);
      padding: 2rem;
      box-shadow: var(--shadow-light);
    }
    .testimonial-card.large {
      flex: 2 1 400px;
    }
    .testimonial-card.small {
      flex: 1 1 280px;
      margin-top: 2rem;
    }
    .quote-icon {
      color: var(--accent-terra);
      font-size: 2rem;
      opacity: 0.7;
    }

    /* FAQ */
    .accordion-item {
      border-bottom: 1px solid var(--border-soft);
    }
    .accordion-title {
      background: transparent;
      padding: 1.2rem 0;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
      align-items: center;
      color: var(--primary-deep);
    }
    .accordion-content {
      padding: 0 0 1.5rem;
      color: var(--text-muted);
    }

    /* CTA final */
    #cta-final {
      background: url('/assets/images/backpic/cta-bg.webp') center/cover no-repeat;
      position: relative;
    }
    #cta-final::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(59,53,52,0.7);
    }
    .cta-inner {
      position: relative;
      z-index: 2;
      text-align: center;
      color: white;
      padding: 3rem 1rem;
    }

    /* 页脚 */
    .site-footer {
      background: var(--primary-deep);
      color: #D5CFC9;
      padding: 3rem 0 1.5rem;
    }
    .footer-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
    }

    @media (max-width: 1024px) {
      h1 { font-size: 2.8rem; }
      .hero-image { margin-top: 2rem; }
    }
    @media (max-width: 640px) {
      h1 { font-size: 2.2rem; }
      .nav-row-channels { gap: 0.2rem; }
      .big-number { font-size: 2.6rem; }
    }