/* roulang page: index */
:root {
      --bronze: #B87333;
      --bronze-light: #C8843D;
      --gunpowder: #1C1410;
      --dust: #F5EDE3;
      --rust: #A63C2F;
      --white: #FFFFFF;
      --border-light: #E0D6CC;
      --text-on-dark: #F5EDE3;
      --text-on-light: #2B1F18;
      --shadow-sm: 0 2px 8px rgba(28, 20, 16, 0.12);
      --shadow-hover: 0 6px 20px rgba(28, 20, 16, 0.22);
      --radius: 4px;
      --transition: 0.25s ease;
    }

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

    body {
      font-family: 'Noto Sans SC', system-ui, -apple-system, 'Segoe UI', sans-serif;
      font-size: 16px;
      line-height: 1.75;
      background-color: var(--dust);
      color: var(--text-on-light);
      scroll-behavior: smooth;
    }

    h1, h2, h3 {
      font-family: 'Noto Serif SC', 'Times New Roman', serif;
      font-weight: 700;
      letter-spacing: 0.5px;
    }

    h1 {
      font-size: 48px;
      line-height: 1.2;
    }

    h2 {
      font-size: 36px;
      margin-bottom: 24px;
    }

    h3 {
      font-size: 22px;
      font-family: 'Noto Sans SC', sans-serif;
      font-weight: 600;
    }

    p {
      margin-bottom: 16px;
      color: #4A3B33;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      width: 100%;
    }

    /* 按钮系统 */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-family: 'Oswald', 'Noto Sans SC', sans-serif;
      font-weight: 500;
      font-size: 16px;
      padding: 14px 32px;
      border-radius: var(--radius);
      text-decoration: none;
      transition: background-color var(--transition), color var(--transition), box-shadow var(--transition), border-color var(--transition);
      min-height: 48px;
      cursor: pointer;
      border: 2px solid transparent;
      letter-spacing: 0.8px;
    }

    .btn-primary {
      background-color: var(--bronze);
      color: var(--white);
      border-color: var(--bronze);
    }

    .btn-primary:hover {
      background-color: var(--bronze-light);
      border-color: var(--bronze-light);
      box-shadow: 0 0 8px var(--bronze-light);
    }

    .btn-outline {
      background: transparent;
      color: var(--bronze);
      border-color: var(--bronze);
    }

    .btn-outline:hover {
      background-color: rgba(184, 115, 51, 0.1);
    }

    .btn-large {
      padding: 18px 40px;
      font-size: 18px;
    }

    .text-link {
      color: var(--rust);
      font-weight: 500;
      text-decoration: underline;
      text-underline-offset: 4px;
      transition: text-decoration-thickness 0.2s;
    }

    .text-link:hover {
      text-decoration-thickness: 3px;
    }

    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 72px;
      background-color: rgba(28, 20, 16, 0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid var(--bronze);
      z-index: 100;
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0 32px;
      transition: background-color 0.3s;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 12px;
      text-decoration: none;
      color: var(--bronze);
      font-family: 'Noto Serif SC', serif;
      font-weight: 700;
      font-size: 24px;
    }

    .logo-icon {
      width: 36px;
      height: 36px;
      background: var(--bronze);
      clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--gunpowder);
      font-size: 18px;
      font-weight: bold;
      transform: rotate(0deg);
      transition: transform 3s linear infinite;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
    }

    .nav-links a {
      color: var(--text-on-dark);
      text-decoration: none;
      font-weight: 500;
      font-size: 16px;
      position: relative;
      padding: 8px 0;
      transition: color 0.2s;
      letter-spacing: 0.3px;
    }

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

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

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

    .mega-trigger {
      position: relative;
      cursor: pointer;
      color: var(--text-on-dark);
      font-weight: 500;
      display: flex;
      align-items: center;
      gap: 4px;
    }

    .mega-panel {
      position: absolute;
      top: 60px;
      right: 0;
      width: 600px;
      background: var(--white);
      box-shadow: var(--shadow-hover);
      border-radius: var(--radius);
      padding: 28px;
      display: flex;
      gap: 32px;
      opacity: 0;
      visibility: hidden;
      transform: translateY(10px);
      transition: opacity 0.2s ease-out, visibility 0.2s, transform 0.2s;
      z-index: 200;
      color: var(--text-on-light);
    }

    .mega-trigger:hover .mega-panel {
      opacity: 1;
      visibility: visible;
      transform: translateY(0);
    }

    .mega-col {
      flex: 1;
    }

    .mega-col h4 {
      font-family: 'Noto Serif SC', serif;
      color: var(--bronze);
      margin-bottom: 16px;
      font-size: 18px;
    }

    .mega-card {
      background: #F9F6F1;
      padding: 12px;
      border-radius: var(--radius);
      margin-bottom: 12px;
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      transition: background 0.2s;
      text-decoration: none;
      color: var(--text-on-light);
    }

    .mega-card:hover {
      background: #EDE4D9;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      background: transparent;
      border: none;
    }

    .hamburger span {
      width: 25px;
      height: 2px;
      background: var(--text-on-dark);
    }

    /* 区块通用 */
    section {
      padding: 100px 0;
    }

    /* Hero */
    .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      background: radial-gradient(circle at 70% 30%, rgba(184, 115, 51, 0.18), var(--gunpowder) 80%);
      color: var(--text-on-dark);
      margin-top: 0;
      padding-top: 72px;
    }

    .hero-grid {
      display: grid;
      grid-template-columns: 7fr 5fr;
      gap: 48px;
      align-items: center;
    }

    .hero-tag {
      color: var(--rust);
      font-weight: 600;
      font-size: 14px;
      letter-spacing: 2px;
      margin-bottom: 20px;
    }

    .hero h1 {
      background: linear-gradient(to right, var(--bronze), var(--rust));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 20px;
    }

    .hero-sub {
      font-size: 18px;
      opacity: 0.8;
      margin-bottom: 40px;
    }

    .hero-buttons {
      display: flex;
      gap: 20px;
      flex-wrap: wrap;
    }

    .hero-visual {
      display: flex;
      justify-content: center;
      align-items: center;
      position: relative;
    }

    .badge-rotate {
      width: 180px;
      height: 180px;
      background: conic-gradient(from 0deg, var(--bronze), #6b4c2a, var(--bronze));
      clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
      animation: spinBadge 12s linear infinite;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 0 30px rgba(184,115,51,0.4);
    }

    .star-center {
      width: 40px;
      height: 40px;
      background: var(--white);
      clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
    }

    @keyframes spinBadge {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }

    /* 亮点网格 六边形风格 */
    .highlights {
      background: var(--dust);
    }

    .hex-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 48px;
    }

    .hex-card {
      background: var(--white);
      border: 1px solid var(--border-light);
      padding: 36px 24px;
      text-align: center;
      transition: all 0.25s;
      position: relative;
      border-radius: 8px;
      clip-path: polygon(5% 0%, 95% 0%, 100% 10%, 100% 90%, 95% 100%, 5% 100%, 0% 90%, 0% 10%);
      box-shadow: var(--shadow-sm);
    }

    .hex-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
      border-bottom: 3px solid var(--bronze);
    }

    .hex-card .icon-place {
      font-size: 32px;
      margin-bottom: 16px;
      color: var(--bronze);
    }

    /* 瀑布流展示 */
    .waterfall-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 32px;
      margin-top: 48px;
    }

    .wf-card {
      background: var(--white);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      transition: all 0.25s;
      overflow: hidden;
      border: 1px solid var(--border-light);
    }

    .wf-card:nth-child(even) {
      margin-top: 60px;
    }

    .wf-card:hover {
      box-shadow: var(--shadow-hover);
      border-bottom: 3px solid var(--bronze);
    }

    .wf-card img {
      width: 100%;
      height: 200px;
      object-fit: cover;
      border-radius: var(--radius) var(--radius) 0 0;
    }

    .wf-content {
      padding: 20px;
    }

    .tag-group {
      display: flex;
      gap: 8px;
      flex-wrap: wrap;
      margin-top: 12px;
    }

    .tag {
      background: rgba(184, 115, 51, 0.15);
      color: var(--bronze);
      padding: 4px 12px;
      border-radius: 20px;
      font-size: 12px;
      font-weight: 600;
    }

    /* 数据看板 */
    .stats-board {
      background: var(--gunpowder);
      color: var(--text-on-dark);
    }

    .stats-flex {
      display: flex;
      justify-content: space-around;
      align-items: center;
      flex-wrap: wrap;
    }

    .stat-item {
      text-align: center;
      padding: 24px;
    }

    .stat-number {
      font-family: 'Oswald', sans-serif;
      font-size: 56px;
      color: var(--bronze);
      font-weight: bold;
    }

    .stat-divider {
      width: 1px;
      height: 60px;
      background: rgba(184, 115, 51, 0.3);
    }

    /* 对决对比 */
    .versus-grid {
      display: grid;
      grid-template-columns: 1fr auto 1fr;
      gap: 32px;
      align-items: center;
      margin-top: 48px;
    }

    .plan-card {
      background: var(--white);
      padding: 40px 32px;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      border: 1px solid var(--border-light);
      text-align: center;
    }

    .plan-premium {
      border-top: 4px solid var(--bronze);
      position: relative;
    }

    .plan-premium::before {
      content: '推荐';
      position: absolute;
      top: 12px;
      right: 12px;
      background: var(--bronze);
      color: white;
      padding: 4px 16px;
      font-size: 12px;
      border-radius: 20px;
    }

    .vs-badge {
      font-family: 'Oswald', sans-serif;
      font-size: 36px;
      color: var(--rust);
      background: #F9F3EC;
      width: 80px;
      height: 80px;
      display: flex;
      align-items: center;
      justify-content: center;
      clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
      font-weight: bold;
      animation: pulse 2s infinite;
    }

    @keyframes pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    .feature-list {
      list-style: none;
      text-align: left;
      margin: 24px 0;
    }

    .feature-list li {
      margin: 12px 0;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    /* 画廊 */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
      margin-top: 48px;
    }

    .gallery-card {
      position: relative;
      overflow: hidden;
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
    }

    .gallery-card img {
      width: 100%;
      height: 280px;
      object-fit: cover;
      display: block;
    }

    .gallery-overlay {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      background: linear-gradient(transparent, var(--gunpowder) 80%);
      color: white;
      padding: 32px 20px 20px;
      transform: translateY(40%);
      transition: transform 0.3s;
    }

    .gallery-card:hover .gallery-overlay {
      transform: translateY(0);
    }

    /* FAQ */
    .faq-layout {
      display: grid;
      grid-template-columns: 3fr 9fr;
      gap: 40px;
      margin-top: 48px;
    }

    .faq-cats {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .faq-cat {
      background: transparent;
      border: none;
      padding: 12px 16px;
      text-align: left;
      font-weight: 600;
      color: var(--text-on-light);
      cursor: pointer;
      border-radius: var(--radius);
      transition: 0.2s;
    }

    .faq-cat.active, .faq-cat:hover {
      background: var(--bronze);
      color: white;
    }

    .accordion-item {
      border-bottom: 1px solid var(--border-light);
      padding: 16px 0;
    }

    .accordion-title {
      font-weight: 700;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      color: var(--bronze);
    }

    /* CTA 横幅 */
    .cta-banner {
      background: var(--gunpowder);
      text-align: center;
      color: var(--text-on-dark);
    }

    .cta-banner h2 {
      color: var(--bronze);
    }

    .social-proof {
      margin-top: 16px;
      font-size: 14px;
      opacity: 0.8;
    }

    /* 页脚 */
    .footer {
      background: var(--gunpowder);
      color: rgba(245, 237, 227, 0.7);
      padding: 60px 0 30px;
    }

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

    .footer a {
      color: rgba(245, 237, 227, 0.7);
      text-decoration: none;
      transition: color 0.2s;
    }

    .footer a:hover {
      color: var(--bronze);
    }

    .copyright {
      border-top: 1px solid rgba(184,115,51,0.2);
      margin-top: 40px;
      padding-top: 20px;
      display: flex;
      justify-content: space-between;
    }

    @media (max-width: 992px) {
      .hero-grid { grid-template-columns: 1fr; }
      .hex-grid { grid-template-columns: repeat(2,1fr); }
      .waterfall-grid { grid-template-columns: 1fr 1fr; }
      .wf-card:nth-child(even) { margin-top: 0; }
      .versus-grid { grid-template-columns: 1fr; }
      .vs-badge { margin: 20px auto; }
      .gallery-grid { grid-template-columns: 1fr 1fr; }
      .faq-layout { grid-template-columns: 1fr; }
      .mega-panel { width: 90vw; right: -20px; }
      .nav-links { display: none; }
      .hamburger { display: flex; }
    }

    @media (max-width: 768px) {
      h1 { font-size: 32px; }
      h2 { font-size: 26px; }
      .stat-number { font-size: 40px; }
      .hex-grid, .waterfall-grid, .gallery-grid { grid-template-columns: 1fr; }
      .stats-flex { flex-direction: column; }
      .stat-divider { display: none; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
    }