/* roulang page: index */
:root {
      --deep-space: #0B0C10;
      --champion-gold: #D4AF37;
      --data-blue: #00D2FF;
      --titanium-silver: #B0B8C1;
      --light-bg: #F8F9FA;
      --card-bg: #ffffff;
      --dark-card-bg: rgba(11, 12, 16, 0.7);
      --glass-border: rgba(255, 255, 255, 0.15);
      --radius-xl: 24px;
      --radius-pill: 50px;
      --shadow-sm: 0 10px 25px -8px rgba(0,0,0,0.08);
      --shadow-hover: 0 22px 35px -12px rgba(0,0,0,0.15);
      --transition-smooth: all 0.3s cubic-bezier(0.2, 0.9, 0.4, 1);
    }
    * {
      box-sizing: border-box;
    }
    body {
      font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', system-ui, -apple-system, sans-serif;
      background-color: var(--light-bg);
      color: #1e1e2f;
      line-height: 1.8;
      margin: 0;
      padding: 0;
      scroll-behavior: smooth;
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      text-decoration: none;
      color: inherit;
      transition: var(--transition-smooth);
    }
    .grid-container {
      max-width: 1200px;
    }
    /* 玻璃导航 */
    .glass-nav {
      background: rgba(11, 12, 16, 0.45);
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--glass-border);
      box-shadow: 0 10px 30px -10px rgba(0,0,0,0.2);
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 99;
      transition: var(--transition-smooth);
      padding: 0.75rem 0;
    }
    .glass-nav.scrolled {
      background: rgba(11, 12, 16, 0.92);
      backdrop-filter: blur(24px);
      -webkit-backdrop-filter: blur(24px);
      border-bottom: 1px solid rgba(212, 175, 55, 0.25);
    }
    .nav-logo {
      font-weight: 700;
      font-size: 1.8rem;
      letter-spacing: 1px;
      color: #fff;
      display: flex;
      align-items: center;
      gap: 0.25rem;
    }
    .nav-logo i {
      color: var(--champion-gold);
      font-size: 2rem;
    }
    .nav-logo span {
      background: linear-gradient(135deg, #fff 0%, #D4AF37 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .glass-nav .menu li a {
      color: rgba(255,255,255,0.9);
      font-weight: 500;
      font-size: 1rem;
      padding: 0.5rem 1rem;
      border-radius: 30px;
      transition: var(--transition-smooth);
    }
    .glass-nav .menu li a:hover {
      background: rgba(255,255,255,0.12);
      color: #fff;
    }
    .cta-nav-btn {
      background: var(--champion-gold);
      color: #0B0C10 !important;
      font-weight: 700;
      padding: 0.6rem 1.6rem !important;
      border-radius: 50px;
      letter-spacing: 0.5px;
      box-shadow: 0 8px 18px rgba(212,175,55,0.35);
      transition: var(--transition-smooth);
      border: none;
    }
    .cta-nav-btn:hover {
      background: #e6c468;
      box-shadow: 0 12px 24px rgba(212,175,55,0.55);
      transform: translateY(-2px);
    }
    /* Hero */
    #hero {
      background: radial-gradient(circle at 30% 30%, #1a1f2b, #0B0C10);
      min-height: 100vh;
      display: flex;
      align-items: center;
      position: relative;
      overflow: hidden;
      padding-top: 90px;
    }
    .hero-bg-img {
      position: absolute;
      right: 0;
      top: 0;
      width: 55%;
      height: 100%;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      opacity: 0.18;
      mask-image: linear-gradient(to left, rgba(0,0,0,0.9) 0%, transparent 100%);
      -webkit-mask-image: linear-gradient(to left, rgba(0,0,0,0.9) 0%, transparent 100%);
    }
    .hero-title {
      font-size: clamp(2.8rem, 7vw, 4.5rem);
      font-weight: 800;
      line-height: 1.2;
      color: #fff;
      text-shadow: 0 4px 20px rgba(0,0,0,0.5);
    }
    .hero-title span {
      color: var(--champion-gold);
      display: inline-block;
    }
    .hero-sub {
      font-size: 1.25rem;
      color: var(--titanium-silver);
      max-width: 600px;
      margin: 1.5rem 0 2rem;
    }
    .data-badge-card {
      background: rgba(255,255,255,0.07);
      backdrop-filter: blur(12px);
      -webkit-backdrop-filter: blur(12px);
      border-radius: 32px;
      padding: 2rem 1.8rem;
      border: 1px solid rgba(212,175,55,0.23);
      display: flex;
      flex-wrap: wrap;
      gap: 2rem;
      justify-content: space-around;
    }
    .badge-item {
      text-align: center;
    }
    .badge-number {
      font-size: 2.8rem;
      font-weight: 800;
      color: #fff;
      font-feature-settings: "tnum";
      letter-spacing: 1px;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.3rem;
    }
    .badge-number i {
      color: var(--data-blue);
      font-size: 1.8rem;
    }
    .badge-label {
      color: #ccc;
      font-size: 0.95rem;
      text-transform: uppercase;
      letter-spacing: 1px;
    }
    .primary-btn {
      background: var(--champion-gold);
      color: #0B0C10;
      font-weight: 700;
      padding: 0.9rem 2.4rem;
      border-radius: 50px;
      display: inline-block;
      box-shadow: 0 6px 20px rgba(212,175,55,0.45);
      transition: var(--transition-smooth);
      border: none;
      cursor: pointer;
      font-size: 1rem;
    }
    .primary-btn:hover {
      background: #f0d47c;
      box-shadow: 0 0 25px rgba(212,175,55,0.8);
      transform: translateY(-3px);
      color: #0B0C10;
    }
    .ghost-btn {
      background: transparent;
      border: 2px solid var(--data-blue);
      color: var(--data-blue);
      font-weight: 600;
      padding: 0.85rem 2.2rem;
      border-radius: 50px;
      transition: var(--transition-smooth);
      margin-left: 1rem;
    }
    .ghost-btn:hover {
      background: var(--data-blue);
      color: #0B0C10;
      border-color: var(--data-blue);
    }
    /* 卡片系统 */
    .service-card {
      background: var(--card-bg);
      border-radius: var(--radius-xl);
      padding: 2rem 1.8rem;
      box-shadow: var(--shadow-sm);
      transition: var(--transition-smooth);
      height: 100%;
      border: 1px solid rgba(0,0,0,0.03);
    }
    .service-card:hover {
      transform: translateY(-12px);
      box-shadow: var(--shadow-hover);
    }
    .service-card img {
      width: 70px;
      height: 70px;
      object-fit: cover;
      border-radius: 20px;
      margin-bottom: 1.5rem;
    }
    .text-link {
      color: var(--data-blue);
      font-weight: 600;
      display: inline-flex;
      align-items: center;
      gap: 0.3rem;
      transition: var(--transition-smooth);
    }
    .text-link i {
      transition: transform 0.2s;
    }
    .text-link:hover i {
      transform: translateX(6px);
    }
    /* 数据对比看板 */
    #data {
      background: linear-gradient(135deg, #0f1119 0%, #0B0C10 100%);
      border-radius: 60px 60px 0 0;
    }
    .compare-card {
      background: rgba(255,255,255,0.04);
      backdrop-filter: blur(8px);
      border-radius: 28px;
      padding: 2rem;
      border: 1px solid rgba(255,255,255,0.08);
    }
    .icon-fail {
      color: #e55b5b;
    }
    .icon-check {
      color: var(--champion-gold);
    }
    .top1-badge {
      background: var(--champion-gold);
      width: 90px;
      height: 90px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      color: #0B0C10;
      font-size: 1.3rem;
      box-shadow: 0 0 35px #D4AF37;
    }
    /* FAQ */
    .accordion-item {
      border-radius: 18px !important;
      margin-bottom: 1rem;
      background: white;
      border: 1px solid #eee;
    }
    .accordion-title {
      font-weight: 600;
      font-size: 1.1rem;
      background: #fff;
      border-radius: 18px;
      padding: 1.2rem 1.8rem;
    }
    .accordion-content {
      background: #fdfdfd;
      border-radius: 0 0 18px 18px;
    }
    /* 表单 */
    #contact .card {
      background: white;
      border-radius: 36px;
      padding: 2.5rem;
    }
    .input-field {
      border-radius: 30px;
      padding: 0.8rem 1.5rem;
      border: 1px solid #ddd;
      background: #f9f9fc;
    }
    .submit-btn {
      background: var(--champion-gold);
      border-radius: 50px;
      font-weight: 700;
      padding: 0.9rem;
      box-shadow: 0 8px 22px rgba(212,175,55,0.5);
      transition: 0.3s;
    }
    .submit-btn:hover {
      box-shadow: 0 0 32px rgba(212,175,55,0.9);
    }
    footer {
      background: #0B0C10;
      color: #aaa;
    }
    @media (max-width: 640px) {
      .hero-title {
        font-size: 2.5rem;
      }
      .ghost-btn {
        margin-left: 0;
        margin-top: 1rem;
        display: block;
        width: fit-content;
      }
    }