/* roulang page: index */
:root {
      --deepblue: #0A0E27;
      --surface-dark: #141832;
      --gold: #D4AF37;
      --esport-red: #FF4655;
      --red-hover: #E63240;
      --bg-main: #F8F9FC;
      --text-dark: #1A1F36;
      --text-muted: #5B6178;
      --white: #FFFFFF;
      --card-bg: #FFFFFF;
      --border-light: #E8ECF2;
      --radius-card: 12px;
      --radius-btn: 8px;
      --radius-tag: 6px;
      --shadow-sm: 0 2px 12px rgba(10,14,39,0.06);
      --shadow-hover: 0 8px 28px rgba(10,14,39,0.12);
      --max-width: 1280px;
      --gap-section: 120px;
      --mobile-padding: 1.5rem;
    }
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }
    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
      color: var(--text-dark);
      background-color: var(--bg-main);
      line-height: 1.7;
      font-size: 16px;
      -webkit-font-smoothing: antialiased;
      scroll-behavior: smooth;
      TABULAR-NUMS: 1;
    }
    a, button, input {
      font-family: inherit;
    }
    img {
      max-width: 100%;
      display: block;
      height: auto;
    }
    .container {
      max-width: var(--max-width);
      margin: 0 auto;
      padding: 0 2rem;
      width: 100%;
    }
    /* ----- 导航组件 ----- */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 100;
      background: transparent;
      backdrop-filter: blur(0px);
      transition: background 0.25s ease, box-shadow 0.25s ease, backdrop-filter 0.25s ease;
    }
    .header.scrolled {
      background: rgba(255, 255, 255, 0.92);
      backdrop-filter: blur(16px);
      box-shadow: 0 4px 20px rgba(0,0,0,0.04);
    }
    .nav-bar {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 1.2rem 2rem;
      max-width: var(--max-width);
      margin: 0 auto;
    }
    .logo {
      display: flex;
      align-items: center;
      text-decoration: none;
      font-weight: 700;
      font-size: 1.5rem;
      color: inherit;
      letter-spacing: -0.5px;
    }
    .logo-icon {
      display: inline-flex;
      align-items: center;
      margin-right: 6px;
      width: 24px;
      height: 24px;
      filter: drop-shadow(0 0 4px rgba(212,175,55,0.6));
    }
    .logo-icon svg {
      width: 100%;
      height: 100%;
      fill: var(--gold);
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 2.2rem;
      list-style: none;
    }
    .nav-links a {
      text-decoration: none;
      color: var(--text-dark);
      font-weight: 500;
      font-size: 0.95rem;
      position: relative;
      padding: 0.25rem 0;
      transition: color 0.2s;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--esport-red);
    }
    .nav-cta {
      background: var(--esport-red);
      color: white;
      padding: 0.8rem 1.8rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      letter-spacing: 0.3px;
      text-decoration: none;
      transition: background 0.25s ease, box-shadow 0.25s ease;
      font-size: 0.9rem;
      white-space: nowrap;
    }
    .nav-cta:hover {
      background: var(--red-hover);
      box-shadow: 0 8px 18px rgba(255,70,85,0.3);
    }
    .mobile-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 2rem;
      cursor: pointer;
      color: var(--text-dark);
    }
    /* 移动端底部/遮罩处理 */
    @media (max-width: 768px) {
      .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(10,14,39,0.97);
        flex-direction: column;
        justify-content: center;
        gap: 2.5rem;
        transform: translateX(100%);
        transition: transform 0.35s ease;
        backdrop-filter: blur(20px);
      }
      .nav-links.active {
        transform: translateX(0);
      }
      .nav-links a {
        color: white;
        font-size: 1.4rem;
      }
      .mobile-toggle {
        display: block;
        position: relative;
        z-index: 101;
      }
      .nav-cta.desktop-cta {
        display: none;
      }
    }
    /* 区块间距 */
    section:not(.hero) {
      padding: var(--gap-section) 0;
    }
    /* ----- 首屏 Hero ----- */
    .hero {
      min-height: 90vh;
      display: flex;
      align-items: center;
      padding-top: 5rem;
      padding-bottom: 3rem;
      background: var(--bg-main);
    }
    .hero .container {
      display: flex;
      align-items: center;
      gap: 3rem;
      width: 100%;
    }
    .hero-left {
      flex: 0 0 58%;
    }
    .hero-right {
      flex: 0 0 42%;
      position: relative;
      overflow: hidden;
      border-radius: 28px;
      box-shadow: 0 18px 35px rgba(0,0,0,0.2);
    }
    .hero-cover-img {
      width: 100%;
      height: auto;
      aspect-ratio: 16 / 12;
      object-fit: cover;
      display: block;
      filter: brightness(0.7);
    }
    .hero-right::after {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: linear-gradient(135deg, rgba(10,14,39,0.65) 0%, rgba(20,24,50,0.55) 100%);
      pointer-events: none;
    }
    .hero-data-card {
      position: absolute;
      bottom: 16px;
      left: 16px;
      right: 16px;
      background: rgba(10,14,39,0.8);
      backdrop-filter: blur(8px);
      padding: 1.2rem 1.5rem;
      border-radius: 16px;
      color: white;
      display: flex;
      justify-content: space-around;
      z-index: 2;
    }
    .stat-number {
      font-size: 1.8rem;
      font-weight: 700;
      color: var(--esport-red);
      line-height: 1.2;
    }
    .hero-left h1 {
      font-size: clamp(2.4rem, 5.5vw, 3.6rem);
      font-weight: 700;
      letter-spacing: -0.02em;
      line-height: 1.15;
      margin-bottom: 1.2rem;
      color: var(--deepblue);
    }
    .hero-left h1 .accent {
      color: var(--esport-red);
      position: relative;
    }
    .hero-desc {
      font-size: 1.15rem;
      color: var(--text-muted);
      margin-bottom: 2rem;
      max-width: 440px;
    }
    .hero-cta-group {
      display: flex;
      gap: 1.2rem;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--esport-red);
      color: white;
      border: none;
      border-radius: var(--radius-btn);
      padding: 0.9rem 2rem;
      font-weight: 600;
      text-decoration: none;
      display: inline-block;
      transition: background 0.25s ease, box-shadow 0.25s ease;
    }
    .btn-primary:hover {
      background: var(--red-hover);
      box-shadow: 0 10px 22px rgba(255,70,85,0.4);
    }
    .btn-outline {
      background: transparent;
      color: var(--deepblue);
      border: 1.5px solid var(--deepblue);
      border-radius: var(--radius-btn);
      padding: 0.9rem 2rem;
      font-weight: 600;
      text-decoration: none;
      transition: 0.25s ease;
    }
    .btn-outline:hover {
      background: rgba(10,14,39,0.05);
    }
    @media (max-width: 768px) {
      .hero .container {
        flex-direction: column;
        text-align: center;
      }
      .hero-left, .hero-right {
        flex: 1 1 auto;
      }
      .hero-desc {
        max-width: 100%;
      }
    }
    /* 亮点网格 2x3 */
    .advantages-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .adv-card {
      background: var(--card-bg);
      border-radius: var(--radius-card);
      padding: 2rem 1.6rem;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
    }
    .adv-card:hover {
      transform: translateY(-6px);
      box-shadow: var(--shadow-hover);
    }
    .adv-icon {
      font-size: 2.2rem;
      color: var(--gold);
      margin-bottom: 1rem;
    }
    .adv-card h3 {
      font-size: 1.3rem;
      margin-bottom: 0.5rem;
    }
    @media (max-width: 1024px) {
      .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
      }
    }
    @media (max-width: 520px) {
      .advantages-grid {
        grid-template-columns: 1fr;
      }
    }
    /* 赛事/案例瀑布 */
    .cases-waterfall {
      column-count: 3;
      column-gap: 20px;
    }
    .case-card {
      break-inside: avoid;
      margin-bottom: 24px;
      background: white;
      border-radius: var(--radius-card);
      overflow: hidden;
      box-shadow: var(--shadow-sm);
      transition: transform 0.3s, box-shadow 0.3s;
    }
    .case-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
    }
    .case-img {
      width: 100%;
      aspect-ratio: 16/9;
      object-fit: cover;
      transition: transform 0.4s;
    }
    .case-card:hover .case-img {
      transform: scale(1.03);
    }
    .case-text {
      padding: 1.2rem;
    }
    @media (max-width: 1024px) {
      .cases-waterfall {
        column-count: 2;
      }
    }
    @media (max-width: 600px) {
      .cases-waterfall {
        column-count: 1;
      }
    }
    /* 方案对比 */
    .plans-row {
      display: flex;
      gap: 1.8rem;
      align-items: stretch;
    }
    .plan-card {
      flex:1;
      background: white;
      border-radius: var(--radius-card);
      padding: 2rem 1.5rem;
      text-align: center;
      box-shadow: var(--shadow-sm);
      transition: 0.3s;
    }
    .plan-card.featured {
      border-top: 4px solid var(--gold);
      transform: scale(1.02);
    }
    @media (max-width: 768px) {
      .plans-row {
        flex-direction: column;
      }
      .plan-card.featured {
        transform: none;
      }
    }
    /* FAQ */
    .faq-item {
      background: white;
      border-radius: 12px;
      margin-bottom: 8px;
      box-shadow: 0 1px 6px rgba(0,0,0,0.03);
    }
    .faq-question {
      background: none;
      border: none;
      width: 100%;
      text-align: left;
      font-weight: 600;
      padding: 1.2rem 1.5rem;
      display: flex;
      justify-content: space-between;
      cursor: pointer;
    }
    /* CTA横幅 */
    .cta-banner {
      background: var(--deepblue);
      position: relative;
      overflow: hidden;
      color: white;
    }
    /* 数字滚动组件简单处理 */
    .count-up {
      font-weight: 700;
      color: var(--esport-red);
    }
    footer {
      background: #0A0E27;
      color: #C0C4D3;
    }