/* roulang page: index */
:root {
      --deep-brown: #3E2723;
      --champagne-gold: #C5A46B;
      --dark-champagne: #b8924a;
      --matte-black: #1A1A1A;
      --cream-white: #F9F6F0;
      --pure-white: #FFFFFF;
      --dark-wine: #722F37;
      --soft-gold: #e8d5b0;
      --text-primary: #2C2C2C;
      --text-secondary: #6B6B6B;
      --border-light: rgba(197, 164, 107, 0.25);
      --shadow-card: 0 12px 32px -12px rgba(62, 39, 35, 0.18);
      --shadow-elevated: 0 20px 40px -16px rgba(62, 39, 35, 0.25);
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 14px;
      --transition-smooth: all 0.28s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }

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

    body {
      font-family: 'Inter', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
      background-color: var(--cream-white);
      color: var(--text-primary);
      line-height: 1.7;
      letter-spacing: 0.01em;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

    h1, h2, h3, .serif-font {
      font-family: 'Playfair Display', 'Cormorant Garamond', 'Times New Roman', serif;
      font-weight: 600;
      letter-spacing: 0.03em;
      color: var(--deep-brown);
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 导航栏 - 品牌活动风格 */
    .top-nav {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(26, 26, 26, 0.25);
      backdrop-filter: blur(15px);
      -webkit-backdrop-filter: blur(15px);
      border-bottom: 1px solid rgba(197, 164, 107, 0.15);
      transition: var(--transition-smooth);
      padding: 0.8rem 0;
    }

    .top-nav.scrolled {
      background: rgba(26, 26, 26, 0.96);
      border-bottom: 1px solid rgba(197, 164, 107, 0.3);
      box-shadow: 0 4px 20px rgba(0,0,0,0.25);
      padding: 0.5rem 0;
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
    }

    .logo {
      font-family: 'Playfair Display', 'Cormorant Garamond', serif;
      font-size: 1.9rem;
      font-weight: 700;
      color: var(--champagne-gold);
      letter-spacing: 0.08em;
      text-shadow: 0 2px 5px rgba(0,0,0,0.4);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .logo i {
      font-size: 1.8rem;
      color: var(--champagne-gold);
    }

    .nav-links {
      display: flex;
      gap: 2.2rem;
      align-items: center;
    }

    .nav-links a {
      color: rgba(255,255,255,0.9);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      letter-spacing: 0.06em;
      text-transform: uppercase;
      transition: color 0.2s;
      position: relative;
    }

    .nav-links a::after {
      content: '';
      position: absolute;
      bottom: -5px;
      left: 0;
      width: 0%;
      height: 2px;
      background: var(--champagne-gold);
      transition: width 0.25s ease;
    }

    .nav-links a:hover {
      color: var(--champagne-gold);
    }

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

    .nav-cta {
      background: var(--champagne-gold);
      color: var(--deep-brown) !important;
      padding: 0.65rem 1.8rem;
      border-radius: 30px;
      font-weight: 700;
      letter-spacing: 0.08em;
      display: flex;
      align-items: center;
      gap: 8px;
      box-shadow: 0 5px 15px rgba(197, 164, 107, 0.3);
      transition: var(--transition-smooth);
      border: none;
    }

    .nav-cta:hover {
      background: #d9b872;
      box-shadow: 0 8px 22px rgba(197, 164, 107, 0.5);
      transform: translateY(-1px);
      color: var(--deep-brown) !important;
    }

    .status-dot {
      width: 8px;
      height: 8px;
      background: #ff5252;
      border-radius: 50%;
      display: inline-block;
      animation: pulse 1.5s infinite;
    }

    @keyframes pulse {
      0% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(1.3); }
      100% { opacity: 1; transform: scale(1); }
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      background: linear-gradient(135deg, rgba(26,26,26,0.85) 0%, rgba(62,39,35,0.75) 100%), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      color: white;
      padding: 6rem 20px 4rem;
    }

    .hero h1 {
      font-size: 3.8rem;
      color: #FFFFFF;
      text-shadow: 0 4px 20px rgba(0,0,0,0.5);
      margin-bottom: 1.5rem;
      letter-spacing: 0.05em;
    }

    .gold-shimmer {
      background: linear-gradient(90deg, #C5A46B, #f3e1b9, #C5A46B);
      background-size: 200% auto;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      animation: shimmer 4s infinite linear;
    }

    @keyframes shimmer {
      to { background-position: -200% center; }
    }

    .hero-sub {
      font-size: 1.3rem;
      color: rgba(255,255,255,0.85);
      max-width: 680px;
      margin: 0 auto 2.5rem;
      font-weight: 400;
    }

    .btn-group {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
    }

    .btn-primary {
      background: var(--champagne-gold);
      color: var(--deep-brown);
      padding: 0.9rem 2.5rem;
      border-radius: 4px;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.1em;
      box-shadow: 0 8px 20px rgba(197, 164, 107, 0.4);
      transition: var(--transition-smooth);
      border: none;
      cursor: pointer;
    }

    .btn-primary:hover {
      background: #dbb860;
      box-shadow: 0 12px 28px rgba(197, 164, 107, 0.65);
    }

    .btn-outline {
      background: transparent;
      border: 2px solid var(--champagne-gold);
      color: var(--champagne-gold);
      padding: 0.9rem 2.5rem;
      border-radius: 4px;
      font-weight: 600;
      letter-spacing: 0.1em;
      transition: var(--transition-smooth);
    }

    .btn-outline:hover {
      background: rgba(197, 164, 107, 0.12);
      color: #fff;
    }

    section {
      padding: 5rem 0;
    }

    .section-title {
      font-size: 2.5rem;
      margin-bottom: 1rem;
      text-align: center;
      color: var(--deep-brown);
    }

    .gold-underline {
      width: 70px;
      height: 3px;
      background: var(--champagne-gold);
      margin: 0.5rem auto 2.5rem;
    }

    /* 核心优势 - 编号风格 */
    .advantage-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2.2rem;
    }

    .adv-card {
      background: var(--pure-white);
      padding: 2.8rem 2rem;
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
      text-align: left;
      border-top: 4px solid transparent;
    }

    .adv-card:hover {
      transform: translateY(-10px);
      box-shadow: var(--shadow-elevated);
      border-top-color: var(--champagne-gold);
    }

    .adv-number {
      font-size: 3.2rem;
      font-family: 'Playfair Display', serif;
      color: var(--champagne-gold);
      font-weight: 700;
      line-height: 1;
    }

    .adv-title {
      font-size: 1.5rem;
      margin: 0.8rem 0;
      color: var(--deep-brown);
    }

    .divider {
      width: 40px;
      height: 2px;
      background: var(--champagne-gold);
      margin: 0.8rem 0;
    }

    /* 数据区 */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 2rem;
      text-align: center;
    }

    .stat-number {
      font-size: 2.8rem;
      font-family: 'Playfair Display', serif;
      color: var(--champagne-gold);
      font-weight: 700;
    }

    /* 服务图文交替 */
    .service-row {
      display: flex;
      align-items: center;
      gap: 4rem;
      margin-bottom: 4rem;
    }

    .service-img {
      flex: 1;
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
    }

    .service-text {
      flex: 1;
    }

    /* 案例卡片 */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 2rem;
    }

    .case-card {
      background: white;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
    }

    .case-img {
      height: 220px;
      background-size: cover;
      transition: transform 0.4s;
    }

    .case-card:hover .case-img {
      transform: scale(1.05);
    }

    /* FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: white;
      border-radius: var(--radius-sm);
      margin-bottom: 1rem;
      box-shadow: 0 4px 12px rgba(0,0,0,0.03);
    }

    .faq-question {
      padding: 1.5rem 2rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 1rem;
      cursor: pointer;
    }

    /* CTA 区块 */
    .cta-section {
      background: var(--matte-black);
      color: white;
      text-align: center;
    }

    .footer {
      background: var(--deep-brown);
      color: #ddd;
      padding: 3rem 0 1.5rem;
    }

    @media (max-width: 1024px) {
      .advantage-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
      .stats-grid { grid-template-columns: repeat(2, 1fr); }
    }

    @media (max-width: 768px) {
      .nav-links { display: none; }
      .hero h1 { font-size: 2.3rem; }
      .service-row { flex-direction: column; }
      .advantage-grid, .case-grid { grid-template-columns: 1fr; }
    }