/* roulang page: index */
:root {
      --primary-dark: #0B3D2E;
      --primary-mid: #1A6B4F;
      --primary-light: #2E8B6A;
      --accent-gold: #C49A6C;
      --accent-deep-gold: #A87B4B;
      --bg-warm: #FAF8F5;
      --bg-soft-green: #EEF4F1;
      --card-bg: #FFFFFF;
      --text-heading: #1E1E1E;
      --text-body: #4A4A4A;
      --text-muted: #8A8A8A;
      --cta-amber: #E87A3E;
      --cta-amber-hover: #C96A32;
      --footer-bg: #1E1E1E;
      --border-light: #E6E2DD;
      --shadow-card: 0 2px 16px rgba(0,0,0,0.06);
      --shadow-card-hover: 0 8px 28px rgba(0,0,0,0.10);
      --radius-xl: 16px;
      --radius-md: 12px;
      --radius-sm: 8px;
      --font-heading: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
      --transition-smooth: 0.3s ease;
      --section-gap: 5rem;
      --card-padding: 2rem;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-heading);
      background-color: var(--bg-warm);
      color: var(--text-body);
      margin: 0;
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4 {
      font-family: var(--font-heading);
      color: var(--text-heading);
      font-weight: 600;
      letter-spacing: -0.02em;
      margin-top: 0;
    }
    h1 {
      font-size: 3.2rem;
      font-weight: 700;
      line-height: 1.2;
    }
    h2 {
      font-size: 2.2rem;
      margin-bottom: 2.5rem;
    }
    h3 {
      font-size: 1.4rem;
      font-weight: 600;
      margin-bottom: 0.75rem;
    }
    p {
      margin-bottom: 1.2rem;
      color: var(--text-body);
    }
    a {
      color: var(--primary-mid);
      text-decoration: none;
      transition: color 0.2s;
    }
    a:hover {
      color: var(--primary-dark);
      text-decoration: underline;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
      border-radius: var(--radius-md);
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 2rem;
    }
    /* 导航栏 */
    .header-nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      background: rgba(255,255,255,0.96);
      backdrop-filter: blur(6px);
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      z-index: 100;
      padding: 0.75rem 0;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 2rem;
    }
    .brand-logo {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--primary-dark);
      display: flex;
      align-items: baseline;
      gap: 0.5rem;
    }
    .brand-tag {
      font-size: 0.8rem;
      background: var(--accent-gold);
      color: white;
      padding: 0.2rem 0.6rem;
      border-radius: 20px;
      font-weight: 500;
      letter-spacing: 0.5px;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 2rem;
    }
    .nav-links a {
      color: var(--text-body);
      font-weight: 500;
      font-size: 1rem;
      position: relative;
      padding: 0.3rem 0;
    }
    .nav-links a:hover {
      color: var(--primary-mid);
      text-decoration: none;
    }
    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -2px;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--accent-gold);
      transition: width 0.25s ease;
    }
    .nav-links a:hover::after {
      width: 100%;
    }
    .cta-nav-btn {
      background: var(--accent-gold);
      color: #1E1E1E !important;
      font-weight: 600;
      padding: 0.6rem 1.6rem;
      border-radius: var(--radius-sm);
      box-shadow: 0 4px 10px rgba(196,154,108,0.25);
      transition: background 0.2s, transform 0.2s;
      margin-left: 0.5rem;
    }
    .cta-nav-btn:hover {
      background: var(--accent-deep-gold);
      transform: scale(1.02);
      text-decoration: none;
    }
    .menu-icon {
      display: none;
      font-size: 1.8rem;
      color: var(--primary-dark);
      cursor: pointer;
    }
    /* 移动端导航 */
    @media (max-width: 1024px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: white;
        padding: 1.5rem 2rem;
        box-shadow: 0 9px 20px rgba(0,0,0,0.08);
        gap: 1.2rem;
        border-radius: 0 0 16px 16px;
      }
      .nav-links.active {
        display: flex;
      }
      .menu-icon {
        display: block;
      }
      .nav-container {
        flex-wrap: wrap;
      }
    }
    /* Hero */
    .hero {
      background: linear-gradient(135deg, #0B3D2E 0%, #1A6B4F 70%);
      min-height: 90vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
      padding: 7rem 0 5rem;
    }
    .hero::before {
      content: "";
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.2;
      mix-blend-mode: overlay;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 700px;
    }
    .hero h1 {
      color: white;
      margin-bottom: 1.5rem;
    }
    .hero-sub {
      color: rgba(255,255,255,0.9);
      font-size: 1.25rem;
      margin-bottom: 2.2rem;
      max-width: 600px;
    }
    .btn-primary {
      background: white;
      color: var(--primary-dark);
      font-weight: 700;
      padding: 0.9rem 2.4rem;
      border-radius: var(--radius-sm);
      display: inline-block;
      transition: all 0.25s;
      border: none;
      font-size: 1.1rem;
    }
    .btn-primary:hover {
      background: var(--accent-gold);
      color: white;
      transform: scale(1.03);
      box-shadow: 0 10px 20px rgba(0,0,0,0.15);
      text-decoration: none;
    }
    .btn-outline-gold {
      background: transparent;
      border: 2px solid var(--accent-gold);
      color: var(--primary-dark);
      font-weight: 600;
      padding: 0.7rem 1.8rem;
      border-radius: var(--radius-sm);
      transition: 0.25s;
    }
    .btn-outline-gold:hover {
      background: var(--accent-gold);
      color: white;
      text-decoration: none;
    }
    /* 通用区块 */
    section {
      padding: var(--section-gap) 0;
    }
    .bg-soft {
      background-color: var(--bg-soft-green);
    }
    .card-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
      margin-top: 2rem;
    }
    .card {
      background: var(--card-bg);
      border-radius: var(--radius-xl);
      padding: var(--card-padding);
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
      position: relative;
    }
    .card:hover {
      box-shadow: var(--shadow-card-hover);
      transform: translateY(-4px);
    }
    .badge-data {
      background: var(--accent-gold);
      color: #1E1E1E;
      font-weight: 700;
      font-size: 0.8rem;
      padding: 0.3rem 1rem;
      border-radius: 20px;
      display: inline-block;
      margin-bottom: 1rem;
    }
    .stat-number {
      font-size: 2.8rem;
      font-weight: 700;
      color: var(--cta-amber);
      line-height: 1.1;
    }
    .testimonial-card {
      background: white;
      border-radius: var(--radius-xl);
      padding: 2.2rem;
      box-shadow: var(--shadow-card);
      margin-bottom: 1.5rem;
      position: relative;
    }
    .quote-mark {
      font-size: 3rem;
      color: var(--accent-gold);
      line-height: 0.8;
      margin-bottom: 0.5rem;
    }
    .footer {
      background: var(--footer-bg);
      color: #B0B0B0;
      padding: 3rem 0 2rem;
    }
    .footer a {
      color: #CCC;
    }
    .footer-bottom {
      border-top: 1px solid #333;
      margin-top: 2rem;
      padding-top: 1.5rem;
      font-size: 0.9rem;
    }
    @media (max-width: 1024px) {
      h1 { font-size: 2.5rem; }
      h2 { font-size: 1.9rem; }
      .card-grid { grid-template-columns: repeat(2,1fr); }
    }
    @media (max-width: 640px) {
      .card-grid { grid-template-columns: 1fr; }
      h1 { font-size: 2rem; }
      section { padding: 3.5rem 0; }
      .hero { min-height: 80vh; }
    }

.faq-answer.show { display: block !important; }
    @media (max-width:640px) {
      .hero h1 { font-size: 1.9rem; }
    }