/* roulang page: index */
:root {
      --primary: #C8102E;
      --primary-dark: #A00D24;
      --secondary-gray: #F2F2F2;
      --deep-black: #1A1A1A;
      --champion-gold: #D4AF37;
      --text-body: #333333;
      --text-muted: #555555;
      --white: #FFFFFF;
      --off-white: #FAFAFA;
      --border-light: #E6E6E6;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.04);
      --shadow-hover: 0 12px 32px rgba(0,0,0,0.1);
      --radius-sm: 8px;
      --radius-md: 12px;
      --radius-lg: 30px;
      --transition-smooth: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
      --font-en: 'Montserrat', 'Impact', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    }

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

    body {
      font-family: var(--font-cn);
      background-color: var(--white);
      color: var(--text-body);
      line-height: 1.65;
      -webkit-font-smoothing: antialiased;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* 导航栏 SaaS 命令栏风格 */
    .main-header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 70px;
      background: rgba(255,255,255,0.88);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      box-shadow: 0 4px 20px rgba(0,0,0,0.02);
      z-index: 100;
      display: flex;
      align-items: center;
      border-bottom: 1px solid rgba(0,0,0,0.02);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    .logo {
      font-family: var(--font-en);
      font-weight: 700;
      font-size: 1.7rem;
      letter-spacing: -0.5px;
      color: var(--deep-black);
      text-decoration: none;
      display: flex;
      align-items: center;
      gap: 6px;
    }
    .logo i {
      color: var(--primary);
      font-size: 1.9rem;
    }
    .logo span {
      font-weight: 800;
      background: linear-gradient(135deg, #1A1A1A 0%, #C8102E 90%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .nav-links {
      display: flex;
      gap: 2rem;
      list-style: none;
      margin: 0;
    }
    .nav-links a {
      text-decoration: none;
      color: var(--text-muted);
      font-weight: 500;
      font-size: 0.95rem;
      transition: color 0.2s, transform 0.2s;
      display: inline-block;
      padding: 0.25rem 0;
    }
    .nav-links a:hover {
      color: var(--primary);
      transform: translateY(-1px);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 1.2rem;
    }
    .search-box {
      background: #F0F0F0;
      border-radius: 30px;
      padding: 0.5rem 1.2rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      color: #777;
      transition: all 0.3s ease;
      width: 170px;
      border: 1px solid transparent;
    }
    .search-box i {
      font-size: 0.9rem;
    }
    .search-box input {
      border: none;
      background: transparent;
      outline: none;
      font-size: 0.85rem;
      width: 100%;
      color: #333;
    }
    .search-box:focus-within {
      background: #fff;
      border-color: #ddd;
      box-shadow: 0 2px 12px rgba(0,0,0,0.04);
      width: 200px;
    }
    .icon-btn {
      color: #444;
      font-size: 1.2rem;
      transition: color 0.2s;
    }
    .icon-btn:hover {
      color: var(--primary);
    }
    .btn-primary {
      background: var(--primary);
      color: white;
      border-radius: 30px;
      padding: 0.6rem 1.8rem;
      font-weight: 600;
      font-size: 0.9rem;
      text-decoration: none;
      transition: all var(--transition-smooth);
      border: none;
      display: inline-block;
      letter-spacing: 0.3px;
      box-shadow: 0 4px 12px rgba(200,16,46,0.2);
    }
    .btn-primary:hover {
      background: var(--primary-dark);
      box-shadow: 0 0 18px rgba(200,16,46,0.45);
      transform: translateY(-1px);
      color: white;
    }

    .mobile-menu-toggle {
      display: none;
      font-size: 1.6rem;
      color: var(--deep-black);
    }

    /* Hero */
    #hero {
      height: 100vh;
      min-height: 650px;
      background: linear-gradient(90deg, rgba(0,0,0,0.75) 0%, rgba(20,20,20,0.5) 60%, rgba(0,0,0,0.2) 100%), url('/assets/images/backpic/back-1.webp') center center/cover no-repeat;
      display: flex;
      align-items: center;
      margin-top: 0;
      position: relative;
    }
    .hero-content {
      max-width: 700px;
      color: white;
    }
    .hero-content h1 {
      font-family: var(--font-en);
      font-size: 3.8rem;
      font-weight: 900;
      line-height: 1.1;
      letter-spacing: -0.02em;
      margin-bottom: 1.5rem;
    }
    .hero-content h1 .gold {
      color: var(--champion-gold);
    }
    .hero-sub {
      font-size: 1.25rem;
      opacity: 0.9;
      margin-bottom: 2.2rem;
      font-weight: 400;
    }
    .btn-outline-light {
      border: 1.5px solid white;
      background: transparent;
      color: white;
      border-radius: 30px;
      padding: 0.7rem 2rem;
      font-weight: 600;
      margin-left: 1rem;
      transition: 0.3s;
      text-decoration: none;
      display: inline-block;
    }
    .btn-outline-light:hover {
      background: white;
      color: #1A1A1A;
    }

    /* 区块通用 */
    section {
      padding: 5rem 0;
    }
    .section-title {
      font-size: 2.4rem;
      font-weight: 700;
      margin-bottom: 0.5rem;
      color: var(--deep-black);
    }
    .title-decor {
      width: 50px;
      height: 3px;
      background: var(--primary);
      margin: 0.8rem 0 2rem;
    }

    /* 大数字编号卡片 */
    .feature-card {
      background: #FAFAFA;
      border-radius: var(--radius-md);
      padding: 2rem 1.8rem;
      transition: all var(--transition-smooth);
      box-shadow: var(--shadow-card);
      height: 100%;
    }
    .feature-card:hover {
      transform: translateY(-8px);
      box-shadow: var(--shadow-hover);
    }
    .feature-number {
      font-family: var(--font-en);
      font-size: 3rem;
      font-weight: 800;
      color: var(--primary);
      opacity: 0.15;
      line-height: 1;
    }
    .feature-title {
      font-size: 1.6rem;
      font-weight: 700;
      margin: 0.5rem 0 0.8rem;
      color: var(--deep-black);
    }
    .divider {
      width: 35px;
      height: 3px;
      background: var(--champion-gold);
      margin: 0.8rem 0;
    }

    /* 战队非对称网格 */
    .asymmetric-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr;
      gap: 1.5rem;
    }
    .player-card {
      position: relative;
      border-radius: var(--radius-md);
      overflow: hidden;
      background: #111;
      transition: all 0.3s;
    }
    .player-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      opacity: 0.85;
      transition: 0.4s;
    }
    .player-card:hover img {
      transform: scale(1.05);
      opacity: 0.7;
    }
    .player-info {
      position: absolute;
      bottom: 20px;
      left: 20px;
      color: white;
      z-index: 2;
    }
    .player-info h4 {
      font-weight: 700;
      font-size: 1.5rem;
    }
    .player-card.large {
      grid-row: span 2;
    }
    .stack-cards {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
    }

    /* 数据滚动 */
    .stat-number {
      font-family: var(--font-en);
      font-size: 3.4rem;
      font-weight: 800;
      color: var(--primary);
    }

    /* 新闻卡片 */
    .news-card {
      background: white;
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: var(--transition-smooth);
    }
    .news-card:hover {
      transform: translateY(-5px);
      box-shadow: var(--shadow-hover);
    }
    .news-img {
      height: 200px;
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .date-tag {
      position: absolute;
      top: 15px;
      left: 15px;
      background: var(--primary);
      color: white;
      font-weight: 600;
      font-size: 0.8rem;
      padding: 0.2rem 0.8rem;
      border-radius: 20px;
    }

    /* FAQ */
    .accordion-item {
      border-bottom: 1px solid #e0e0e0;
    }
    .accordion-btn {
      background: transparent;
      border: none;
      width: 100%;
      text-align: left;
      padding: 1.2rem 0;
      font-weight: 600;
      font-size: 1.1rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      color: var(--deep-black);
    }
    .accordion-btn i {
      transition: transform 0.3s;
      color: var(--primary);
    }
    .accordion-content {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.4s ease;
    }

    /* 页脚 */
    .site-footer {
      background: #0D0D0D;
      color: #ccc;
      padding: 3.5rem 0 2rem;
    }
    .footer-subscribe {
      display: flex;
      gap: 0;
      max-width: 320px;
      margin-top: 1rem;
    }
    .footer-subscribe input {
      flex: 1;
      border-radius: 30px 0 0 30px;
      border: none;
      padding: 0.7rem 1.2rem;
      background: #222;
      color: white;
    }
    .footer-subscribe button {
      border-radius: 0 30px 30px 0;
      background: var(--primary);
      border: none;
      color: white;
      padding: 0 1.5rem;
      font-weight: 600;
    }

    @media (max-width: 1024px) {
      .hero-content h1 { font-size: 2.8rem; }
      .asymmetric-grid { grid-template-columns: 1fr; }
      .player-card.large { grid-row: span 1; }
    }
    @media (max-width: 768px) {
      .nav-links, .nav-actions .search-box, .nav-actions .btn-primary {
        display: none;
      }
      .mobile-menu-toggle {
        display: block;
      }
      .hero-content h1 { font-size: 2.4rem; }
      section { padding: 3.5rem 0; }
    }