/* roulang page: index */
:root {
      --primary: #E3402A;
      --primary-hover: #C83020;
      --dark: #1A1C20;
      --light-bg: #F5F0EB;
      --accent: #FFB800;
      --text-main: #1A1C20;
      --text-muted: #5A5D63;
      --border-soft: #E0DCD5;
      --white: #FFFFFF;
      --card-bg: #FFFFFF;
      --dark-card: #25272B;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-pill: 24px;
      --shadow-card: 0 2px 12px rgba(26,28,32,0.06);
      --shadow-hover: 0 8px 28px rgba(227,64,42,0.12);
      --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
      --font-number: 'DIN Alternate', 'Bebas Neue', 'PingFang SC', sans-serif;
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: var(--font-body);
      background-color: var(--light-bg);
      color: var(--text-main);
      line-height: 1.7;
      font-size: 16px;
      margin: 0;
      overflow-x: hidden;
    }
    h1, h2, h3, h4, .h1, .h2, .h3 {
      font-family: var(--font-title);
      letter-spacing: -0.2px;
    }
    h1 {
      font-size: 48px;
      line-height: 1.15;
      font-weight: 800;
      letter-spacing: -0.5px;
    }
    h2 {
      font-size: 36px;
      line-height: 1.2;
      font-weight: 700;
    }
    h3 {
      font-size: 22px;
      line-height: 1.35;
      font-weight: 600;
    }
    .text-muted-custom {
      color: var(--text-muted);
    }
    .container-custom {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 20px;
    }
    /* 导航栏 */
    .navbar-v {
      background: rgba(255,255,255,0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(224,220,213,0.6);
      padding: 12px 0;
      transition: background 0.2s;
      position: sticky;
      top: 0;
      z-index: 1020;
    }
    .navbar-v.scrolled {
      background: #FFFFFF;
    }
    .logo-text {
      font-family: var(--font-title);
      font-weight: 800;
      font-size: 1.8rem;
      color: var(--primary);
      letter-spacing: -0.5px;
      display: flex;
      align-items: center;
      gap: 6px;
      text-decoration: none;
    }
    .logo-icon {
      display: inline-block;
      width: 28px;
      height: 28px;
      background: var(--primary);
      mask: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M13 2L3 14h6l-1 8 10-12h-6l1-8z"/></svg>') center/contain no-repeat;
      background: var(--primary);
    }
    .search-wrapper {
      position: relative;
      width: 380px;
      margin: 0 auto;
    }
    .search-wrapper input {
      width: 100%;
      background: var(--light-bg);
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-pill);
      padding: 10px 20px 10px 44px;
      font-size: 15px;
      transition: all 0.2s;
      outline: none;
    }
    .search-wrapper input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(227,64,42,0.1);
      background: #fff;
    }
    .search-icon {
      position: absolute;
      left: 18px;
      top: 50%;
      transform: translateY(-50%);
      color: var(--text-muted);
      font-size: 16px;
    }
    .nav-link-anchor {
      color: var(--text-main);
      font-weight: 500;
      margin: 0 10px;
      text-decoration: none;
      transition: color 0.2s;
      font-size: 15px;
      white-space: nowrap;
    }
    .nav-link-anchor:hover {
      color: var(--primary);
    }
    /* 移动端汉堡菜单 */
    @media (max-width: 992px) {
      .search-wrapper {
        width: 100%;
        order: 3;
        margin-top: 8px;
      }
      .navbar-v .container-custom {
        flex-wrap: wrap;
      }
      .navbar-nav-mobile {
        display: flex;
        align-items: center;
        gap: 15px;
      }
    }
    /* Hero 双栏 */
    .hero-section {
      background: var(--light-bg);
      padding: 60px 0 80px;
      position: relative;
      overflow: hidden;
    }
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 40px;
    }
    .hero-left {
      flex: 0 0 55%;
    }
    .hero-right {
      flex: 0 0 45%;
      position: relative;
    }
    .hero-image {
      width: 100%;
      border-radius: 16px;
      transform: rotate(1.5deg);
      box-shadow: 0 20px 35px rgba(26,28,32,0.15);
      background: linear-gradient(135deg, rgba(227,64,42,0.12) 0%, rgba(26,28,32,0.03) 100%);
    }
    .hero-image img {
      width: 100%;
      display: block;
      border-radius: 16px;
    }
    .micro-data {
      display: flex;
      gap: 20px;
      margin-top: 24px;
      font-size: 14px;
      color: var(--text-muted);
      font-weight: 500;
    }
    .btn-primary-v {
      background: var(--primary);
      color: white;
      border-radius: var(--radius-btn);
      padding: 14px 32px;
      font-weight: 600;
      border: none;
      transition: 0.2s;
    }
    .btn-primary-v:hover {
      background: var(--primary-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 20px rgba(227,64,42,0.3);
      color: white;
    }
    .btn-outline-dark-v {
      background: transparent;
      border: 2px solid var(--text-main);
      color: var(--text-main);
      border-radius: var(--radius-btn);
      padding: 12px 30px;
      font-weight: 600;
      transition: 0.2s;
    }
    .btn-outline-dark-v:hover {
      background: var(--text-main);
      color: white;
    }
    .btn-accent {
      background: var(--accent);
      color: var(--text-main);
      font-weight: 700;
      border: none;
    }
    .btn-accent:hover {
      background: white;
      color: var(--primary);
    }
    /* 亮点网格不对称 */
    .highlights-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 24px;
    }
    .highlight-card {
      background: var(--white);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-soft);
      padding: 28px;
      transition: all 0.25s;
      box-shadow: var(--shadow-card);
      position: relative;
    }
    .highlight-card.large {
      border-left: 4px solid var(--primary);
    }
    .highlight-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--primary);
    }
    .highlight-card.large:hover {
      border-left-width: 8px;
    }
    .icon-red {
      color: var(--primary);
      font-size: 36px;
      margin-bottom: 16px;
    }
    /* 瀑布流案例 */
    .masonry-grid {
      columns: 3;
      column-gap: 24px;
    }
    .case-card {
      break-inside: avoid;
      margin-bottom: 24px;
      background: var(--white);
      border-radius: var(--radius-card);
      border: 1px solid var(--border-soft);
      overflow: hidden;
      transition: 0.25s;
    }
    .case-card:hover {
      border-color: var(--primary);
      box-shadow: var(--shadow-hover);
    }
    .case-img {
      width: 100%;
      height: auto;
      display: block;
      transition: 0.3s;
    }
    .case-card:hover .case-img {
      transform: scale(1.03);
      filter: brightness(1.05);
    }
    .tag-sport {
      background: rgba(255,184,0,0.2);
      color: var(--primary);
      font-size: 12px;
      padding: 4px 10px;
      border-radius: 20px;
      font-weight: 600;
    }
    /* 方案对比 */
    .compare-card {
      background: #F0EDE8;
      border-radius: var(--radius-card);
      padding: 28px;
    }
    .compare-card.vstation {
      background: white;
      border-left: 3px solid var(--primary);
    }
    /* 深色数据 */
    .dark-section {
      background: var(--dark);
      color: white;
    }
    .stat-number {
      font-family: var(--font-number);
      font-size: 56px;
      color: var(--accent);
    }
    /* FAQ */
    .accordion-button:not(.collapsed) {
      background-color: var(--light-bg);
      color: var(--text-main);
      box-shadow: none;
      border-bottom: 2px solid var(--primary);
    }
    .accordion-button:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 2px rgba(227,64,42,0.2);
    }
    .accordion-body {
      border-left: 3px solid var(--primary);
      background: white;
    }
    /* CTA */
    .cta-banner {
      background: linear-gradient(135deg, #E3402A, #C83020);
      border-radius: 20px;
      padding: 60px 40px;
      position: relative;
      overflow: hidden;
    }
    /* 页脚 */
    .footer-dark {
      background: var(--dark);
      color: #ccc;
    }
    .footer-dark a {
      color: #9A9DA3;
      text-decoration: none;
    }
    .footer-dark a:hover {
      color: var(--accent);
    }
    @media (max-width: 992px) {
      .hero-grid { flex-direction: column; }
      .hero-left, .hero-right { flex: 0 0 100%; }
      .highlights-grid { grid-template-columns: 1fr 1fr; }
      .masonry-grid { columns: 2; }
    }
    @media (max-width: 768px) {
      h1 { font-size: 32px; }
      h2 { font-size: 26px; }
      .highlights-grid { grid-template-columns: 1fr; }
      .masonry-grid { columns: 1; }
      .search-wrapper { width: 100%; }
      .navbar-nav-mobile { flex-wrap: wrap; }
    }