/* roulang page: index */
:root {
      --red: #C8102E;
      --red-dark: #A00D25;
      --black: #1A1A1A;
      --warm-light: #F5F5F0;
      --gold: #D4AF37;
      --gold-light: #E5C158;
      --white: #FFFFFF;
      --gray-text: #555555;
      --gray-mid: #999999;
      --light-border: #E5E5E5;
      --shadow-sm: 0 2px 16px rgba(0, 0, 0, 0.06);
      --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
      --radius-card: 16px;
      --radius-btn: 8px;
      --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1.2);
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Inter", "SF Pro Display", sans-serif;
      background: var(--white);
      color: var(--gray-text);
      line-height: 1.75;
      font-size: 16px;
      scroll-behavior: smooth;
    }
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }
    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-weight: 700;
      color: var(--black);
    }
    a {
      text-decoration: none;
      color: inherit;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    .section {
      padding: 100px 0;
    }
    @media (max-width: 1024px) {
      .section { padding: 80px 0; }
    }
    @media (max-width: 768px) {
      .section { padding: 60px 0; }
    }

    /* 导航 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(12px);
      height: 80px;
      display: flex;
      align-items: center;
      border-bottom: 1px solid transparent;
      transition: background 0.3s, box-shadow 0.3s;
    }
    .navbar.scrolled {
      box-shadow: 0 4px 20px rgba(0,0,0,0.04);
      background: rgba(255,255,255,0.96);
    }
    .nav-container {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
    }
    .logo {
      font-size: 28px;
      font-weight: 700;
      color: var(--red);
      letter-spacing: 2px;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo span {
      font-weight: 800;
    }
    .nav-links {
      display: flex;
      gap: 32px;
      align-items: center;
    }
    .nav-links a {
      font-weight: 500;
      color: var(--black);
      font-size: 16px;
      position: relative;
      padding: 8px 0;
      transition: color 0.2s;
    }
    .nav-links a:hover, .nav-links a.active {
      color: var(--red);
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--gold);
    }
    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: none;
      border: none;
    }
    .hamburger span {
      width: 28px;
      height: 2px;
      background: var(--black);
      transition: 0.3s;
    }
    .primary-btn {
      background: var(--red);
      color: white;
      border: none;
      font-weight: 600;
      padding: 12px 28px;
      border-radius: var(--radius-btn);
      font-size: 16px;
      cursor: pointer;
      transition: var(--transition);
      display: inline-block;
      text-align: center;
      box-shadow: 0 2px 8px rgba(199,16,46,0.2);
    }
    .primary-btn:hover {
      background: var(--red-dark);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(160,13,37,0.3);
    }
    @media (max-width: 1024px) {
      .nav-links { display: none; }
      .hamburger { display: flex; }
    }
    .mobile-menu {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100vh;
      background: rgba(26,26,26,0.95);
      backdrop-filter: blur(20px);
      display: none;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      gap: 36px;
      z-index: 999;
    }
    .mobile-menu.active {
      display: flex;
    }
    .mobile-menu a {
      color: white;
      font-size: 26px;
      font-weight: 600;
      border-bottom: 2px solid transparent;
    }
    .mobile-menu a:hover {
      border-bottom-color: var(--gold);
    }
    .close-mobile {
      position: absolute;
      top: 30px;
      right: 30px;
      background: none;
      border: none;
      color: white;
      font-size: 32px;
      cursor: pointer;
    }

    /* Hero */
    .hero {
      background: linear-gradient(rgba(26,26,26,0.8), rgba(26,26,26,0.4)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      min-height: 90vh;
      display: flex;
      align-items: center;
      padding-top: 100px;
      color: white;
    }
    .hero-content {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 40px;
    }
    .hero-text {
      flex: 1 1 500px;
    }
    .hero h1 {
      font-size: 3.4rem;
      font-weight: 800;
      line-height: 1.2;
      color: white;
      margin-bottom: 18px;
    }
    .hero .subtitle {
      font-size: 1.2rem;
      opacity: 0.9;
      margin-bottom: 32px;
    }
    .hero-buttons {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }
    .secondary-btn {
      border: 2px solid white;
      background: transparent;
      color: white;
      padding: 12px 28px;
      font-weight: 600;
      border-radius: var(--radius-btn);
      cursor: pointer;
      transition: var(--transition);
    }
    .secondary-btn:hover {
      background: white;
      color: var(--red);
    }
    .stats-column {
      flex: 1 1 300px;
      display: flex;
      flex-direction: column;
      gap: 28px;
    }
    .stat-item {
      border-left: 4px solid var(--gold);
      padding-left: 20px;
    }
    .stat-number {
      font-size: 3rem;
      font-weight: 800;
      color: var(--gold);
    }
    .stat-label {
      color: rgba(255,255,255,0.8);
    }

    /* 通用标题 */
    .section-title {
      font-size: 2.6rem;
      margin-bottom: 16px;
      display: flex;
      align-items: center;
      gap: 16px;
      flex-wrap: wrap;
    }
    .gold-line {
      width: 60px;
      height: 4px;
      background: var(--gold);
      transition: width 0.3s;
    }
    .section-title:hover .gold-line { width: 80px; }
    .grid-3 {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card {
      background: white;
      border-radius: var(--radius-card);
      padding: 32px;
      box-shadow: var(--shadow-sm);
      transition: var(--transition);
      border: 1px solid var(--light-border);
    }
    .card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .gold-highlight {
      color: var(--gold);
      font-weight: 800;
    }

    @media (max-width: 768px) {
      .grid-3 { grid-template-columns: 1fr; }
      .hero h1 { font-size: 2.5rem; }
    }

    .bg-warm { background: var(--warm-light); }
    .count-up {
      transition: 0.2s;
    }
    footer {
      background: var(--black);
      color: var(--gray-mid);
      padding: 60px 0 24px;
    }
    footer a:hover { color: var(--gold); }