/* roulang page: index */
:root {
      --deep-space: #1A0B2E;
      --starlight-gold: #D4AF37;
      --neon-cyan: #00F0FF;
      --charcoal: #0D0D0D;
      --white: #FFFFFF;
      --white-70: rgba(255,255,255,0.7);
      --white-10: rgba(255,255,255,0.1);
      --white-05: rgba(255,255,255,0.05);
      --glass-bg: rgba(255,255,255,0.03);
      --border-light: rgba(255,255,255,0.25);
      --radius-card: 24px;
      --radius-pill: 50px;
      --shadow-neon: 0 0 20px rgba(0,240,255,0.2);
      --shadow-gold: 0 0 25px #D4AF37;
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }
    body {
      font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", "PingFang SC", "Microsoft YaHei", sans-serif;
      background: radial-gradient(circle at 30% 10%, #1A0B2E, #0D0D0D 90%);
      color: var(--white);
      line-height: 1.7;
      font-weight: 400;
      overflow-x: hidden;
    }
    .grid-container {
      max-width: 1200px;
      padding-left: 1.5rem;
      padding-right: 1.5rem;
    }
    /* 导航栏 */
    .top-bar {
      background: var(--charcoal);
      border-bottom: 2px solid var(--neon-cyan);
      padding: 0.5rem 0;
      position: sticky;
      top: 0;
      z-index: 99;
      backdrop-filter: blur(12px);
      background: rgba(13,13,13,0.85);
    }
    .top-bar .menu {
      background: transparent;
    }
    .top-bar .menu li a {
      color: var(--white-70);
      font-weight: 500;
      font-size: 0.95rem;
      letter-spacing: 0.5px;
      padding: 0.8rem 1rem;
      transition: var(--transition);
      text-transform: uppercase;
    }
    .top-bar .menu li a:hover,
    .top-bar .menu li a.active {
      color: var(--starlight-gold);
      text-shadow: 0 0 8px var(--starlight-gold);
    }
    .logo-text {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--starlight-gold);
      letter-spacing: 1px;
      text-decoration: none;
      display: flex;
      align-items: center;
    }
    .logo-text i {
      margin-right: 8px;
      color: var(--neon-cyan);
    }
    .vip-btn {
      background: var(--starlight-gold);
      color: var(--deep-space) !important;
      border-radius: var(--radius-pill);
      padding: 0.6rem 1.8rem !important;
      font-weight: 700;
      letter-spacing: 1px;
      box-shadow: 0 0 12px rgba(212,175,55,0.6);
      transition: var(--transition);
    }
    .vip-btn:hover {
      background: #f0da6e;
      box-shadow: 0 0 28px var(--starlight-gold);
      color: #0D0D0D !important;
    }
    .hamburger .menu-icon::after {
      background: var(--neon-cyan);
      box-shadow: 0 7px 0 var(--neon-cyan), 0 14px 0 var(--neon-cyan);
    }
    /* Hero */
    .hero {
      min-height: 90vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
      position: relative;
      background: url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      background-color: rgba(26,11,46,0.65);
      padding: 2rem;
    }
    .hero::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: radial-gradient(circle at 20% 30%, rgba(0,240,255,0.08) 0%, transparent 60%);
      pointer-events: none;
    }
    .hero-content {
      position: relative;
      z-index: 2;
      max-width: 900px;
    }
    .hero h1 {
      font-size: 3.5rem;
      font-weight: 700;
      letter-spacing: -0.02em;
      background: linear-gradient(180deg, #F9E076 0%, #D4AF37 80%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      margin-bottom: 1.5rem;
      text-shadow: 0 0 25px rgba(212,175,55,0.3);
    }
    .hero .sub {
      font-size: 1.3rem;
      color: var(--white-70);
      margin-bottom: 2.5rem;
      font-weight: 300;
    }
    .btn-ghost-neon {
      border: 2px solid var(--neon-cyan);
      background: transparent;
      color: var(--neon-cyan);
      padding: 0.9rem 2.8rem;
      border-radius: var(--radius-pill);
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 2px;
      transition: var(--transition);
      display: inline-block;
      margin: 0 0.5rem;
    }
    .btn-ghost-neon:hover {
      background: var(--neon-cyan);
      color: var(--deep-space);
      box-shadow: var(--shadow-neon);
    }
    .text-link {
      color: var(--white-70);
      text-decoration: underline;
      margin-left: 1rem;
      font-weight: 400;
    }
    /* 板块标题 */
    .section-title {
      font-weight: 600;
      font-size: 2.5rem;
      margin-bottom: 0.5rem;
      color: var(--white);
    }
    .title-decor {
      width: 70px;
      height: 4px;
      background: var(--neon-cyan);
      margin: 0.8rem auto 2.5rem;
      box-shadow: 0 0 18px var(--neon-cyan);
    }
    /* 数据看板 */
    .stat-card {
      background: var(--glass-bg);
      backdrop-filter: blur(10px);
      border-radius: var(--radius-card);
      padding: 2rem 1rem;
      text-align: center;
      border: 1px solid var(--white-10);
      transition: var(--transition);
    }
    .stat-number {
      font-size: 3rem;
      font-weight: 700;
      color: var(--neon-cyan);
      text-shadow: 0 0 15px #00F0FF;
    }
    /* 服务卡片 */
    .service-card {
      background: var(--glass-bg);
      backdrop-filter: blur(12px);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--white-05);
      transition: var(--transition);
      height: 100%;
    }
    .service-card:hover {
      box-shadow: 0 20px 40px rgba(0,240,255,0.2);
      transform: translateY(-5px);
    }
    .card-img {
      height: 180px;
      background-size: cover;
      background-position: center;
      position: relative;
    }
    .card-img::after {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0; bottom: 0;
      background: linear-gradient(0deg, rgba(26,11,46,0.7) 0%, transparent 60%);
    }
    .service-content {
      padding: 1.8rem;
    }
    .ghost-btn {
      border: 1px solid var(--white-70);
      color: var(--white);
      padding: 0.5rem 1.8rem;
      border-radius: var(--radius-pill);
      font-size: 0.9rem;
      transition: var(--transition);
      background: transparent;
      display: inline-block;
      margin-top: 1rem;
    }
    .service-card:hover .ghost-btn {
      border-color: var(--neon-cyan);
      color: var(--neon-cyan);
    }
    /* 对比 */
    .compare-col {
      padding: 2rem;
      border-radius: var(--radius-card);
    }
    .dim-side {
      background: rgba(255,255,255,0.03);
      border: 1px solid rgba(255,255,255,0.1);
    }
    .gold-side {
      background: rgba(212,175,55,0.08);
      border: 1px solid var(--starlight-gold);
      box-shadow: 0 0 18px rgba(212,175,55,0.15);
    }
    /* FAQ */
    .accordion-title {
      background: var(--white-05);
      border-radius: 12px;
      font-weight: 500;
      color: var(--white);
      border: none;
      padding: 1.2rem 1.5rem;
    }
    .accordion-title::before {
      color: var(--neon-cyan);
    }
    .is-active .accordion-title {
      background: rgba(0,240,255,0.08);
    }
    .faq-dot {
      display: inline-block;
      width: 10px;
      height: 10px;
      background: var(--neon-cyan);
      border-radius: 50%;
      margin-right: 12px;
      box-shadow: 0 0 12px var(--neon-cyan);
    }
    /* CTA表单 */
    .cta-block {
      background: rgba(255,255,255,0.02);
      backdrop-filter: blur(15px);
      border-radius: var(--radius-card);
      padding: 2.5rem;
    }
    .input-line {
      background: transparent;
      border: none;
      border-bottom: 2px solid rgba(255,255,255,0.3);
      color: white;
      padding: 0.7rem 0.2rem;
      margin-bottom: 1.5rem;
      width: 100%;
      transition: var(--transition);
    }
    .input-line:focus {
      outline: none;
      border-bottom-color: var(--neon-cyan);
      box-shadow: 0 4px 12px rgba(0,240,255,0.2);
    }
    .btn-gold {
      background: var(--starlight-gold);
      color: var(--deep-space);
      font-weight: 700;
      border-radius: var(--radius-pill);
      padding: 0.9rem 2rem;
      border: none;
      width: 100%;
      transition: var(--transition);
    }
    .btn-gold:hover {
      box-shadow: 0 0 30px var(--starlight-gold);
    }
    footer {
      background: var(--charcoal);
      padding: 2.5rem 0;
      color: var(--white-70);
    }
    @media (max-width: 768px) {
      .hero h1 { font-size: 2.5rem; }
      .section-title { font-size: 2rem; }
      .stat-number { font-size: 2.2rem; }
    }