/* roulang page: index */
:root {
      --bg-deep: #0A0E17;
      --primary-neon: #00F0A8;
      --secondary-purple: #A855F7;
      --energy-orange: #FF6B35;
      --glass-bg: rgba(255,255,255,0.03);
      --glass-border: rgba(255,255,255,0.06);
      --text-primary: rgba(255,255,255,0.92);
      --text-secondary: rgba(255,255,255,0.65);
      --text-muted: rgba(255,255,255,0.38);
      --card-radius-lg: 20px;
      --card-radius: 16px;
      --card-radius-sm: 14px;
      --btn-radius: 50px;
      --shadow-card: 0 4px 20px rgba(0,0,0,0.4);
      --shadow-glow: 0 8px 30px rgba(0,240,168,0.25);
      --transition: all 0.25s ease;
    }
    * {
      box-sizing: border-box;
    }
    body {
      background-color: var(--bg-deep);
      font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
      color: var(--text-primary);
      line-height: 1.5;
      margin: 0;
      padding: 0;
      position: relative;
      overflow-x: hidden;
    }
    body::before {
      content: "";
      position: fixed;
      top:0;left:0;width:100%;height:100%;
      background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M30 5 L55 20 L55 45 L30 60 L5 45 L5 20 Z' fill='none' stroke='rgba(255,255,255,0.02)' stroke-width='1'/%3E%3C/svg%3E");
      background-size: 60px 60px;
      pointer-events: none;
      z-index: 0;
    }
    .container-main {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
      position: relative;
      z-index: 2;
    }
    h1, h2, h3, h4 {
      font-weight: 700;
      letter-spacing: -0.01em;
    }
    h1 {
      font-size: 3.5rem;
      font-weight: 800;
      letter-spacing: -0.02em;
      line-height: 1.15;
    }
    h2 {
      font-size: 2.25rem;
      position: relative;
      display: inline-block;
      margin-bottom: 2.5rem;
    }
    h2::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -12px;
      width: 48px;
      height: 4px;
      background: var(--primary-neon);
      box-shadow: 0 0 12px var(--primary-neon);
      border-radius: 4px;
    }
    h3 {
      font-size: 1.4rem;
      font-weight: 600;
    }
    .section {
      padding: 5rem 0;
    }
    /* 导航 */
    .navbar-custom {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      z-index: 1000;
      background: rgba(10,14,23,0.82);
      backdrop-filter: blur(18px);
      border-bottom: 1px solid rgba(255,255,255,0.05);
      height: 72px;
      display: flex;
      align-items: center;
    }
    .nav-inner {
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }
    .logo {
      font-size: 1.5rem;
      font-weight: 700;
      color: white;
      display: flex;
      align-items: center;
      gap: 0.5rem;
      text-decoration: none;
    }
    .logo svg {
      width: 28px;
      height: 28px;
      fill: var(--primary-neon);
    }
    .menu-links {
      display: flex;
      gap: 2rem;
      align-items: center;
    }
    .menu-links a {
      color ब्लকquote: rgba(255,255,255,0.7);
      text-decoration: none;
      font-weight: 500;
      font-size: 0.95rem;
      transition: var(--transition);
      position: relative;
      padding: 0.25rem 0;
    }
    .menu-links a:hover, .menu-links a.active {
      color: var(--primary-neon);
    }
    .menu-links a.active::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 20%;
      width: 60%;
      height: 3px;
      background: var(--primary-neon);
      box-shadow: 0 0 10px var(--primary-neon);
      border-radius: 3px;
    }
    .btn-nav {
      background: var(--primary-neon);
      color: #0A0E17 !important;
      padding: 0.5rem 1.6rem;
      border-radius: 50px;
      font-weight: 700;
      box-shadow: 0 4px 15px rgba(0,240,168,0.35);
    }
    .btn-nav:hover {
      background: #00e09c;
      box-shadow: 0 6px 22px rgba(0,240,168,0.55);
    }
    /* 汉堡菜单隐藏桌面 */
    .hamburger {
      display: none;
      font-size: 1.8rem;
      color: var(--primary-neon);
      cursor: pointer;
    }
    /* Hero */
    .hero-grid {
      display: flex;
      align-items: center;
      gap: 3rem;
      min-height: 90vh;
      padding-top: 4rem;
    }
    .hero-left {
      flex: 0 0 55%;
    }
    .hero-right {
      flex: 0 0 45%;
      position: relative;
      height: 420px;
    }
    .glass-card-stack {
      position: relative;
      width: 100%;
      height: 100%;
    }
    .float-card {
      position: absolute;
      width: 280px;
      height: 180px;
      background: rgba(20,25,40,0.5);
      backdrop-filter: blur(16px);
      border-radius: 22px;
      border: 1px solid rgba(0,240,168,0.2);
      box-shadow: 0 20px 40px rgba(0,0,0,0.5);
      display: flex;
      align-items: center;
      justify-content: center;
      overflow: hidden;
    }
    .float-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }
    .float-card:nth-child(1) { top: 10px; right: 10px; transform: rotate(-3deg); animation: floatA 6s infinite; }
    .float-card:nth-child(2) { top: 120px; right: 110px; transform: rotate(0deg); animation: floatB 8s infinite; }
    .float-card:nth-child(3) { top: 220px; right: 30px; transform: rotate(4deg); animation: floatC 10s infinite; }
    @keyframes floatA { 0%{transform:translateY(0) rotate(-3deg);} 50%{transform:translateY(-12px) rotate(-2deg);} 100%{transform:translateY(0) rotate(-3deg);} }
    @keyframes floatB { 0%{transform:translateY(0);} 50%{transform:translateY(-18px);} 100%{transform:translateY(0);} }
    @keyframes floatC { 0%{transform:translateY(0) rotate(4deg);} 50%{transform:translateY(-10px) rotate(5deg);} 100%{transform:translateY(0) rotate(4deg);} }
    .btn-primary {
      background: linear-gradient(135deg, #00F0A8, #00C98A);
      border: none;
      color: #0A0E17;
      font-weight: 700;
      border-radius: 50px;
      padding: 0.9rem 2.6rem;
      letter-spacing: 0.02em;
      box-shadow: 0 4px 15px rgba(0,240,168,0.3);
      transition: all 0.2s;
      display: inline-block;
    }
    .btn-primary:hover {
      transform: scale(1.03);
      box-shadow: 0 10px 28px rgba(0,240,168,0.5);
      color:#0A0E17;
    }
    .btn-outline {
      background: transparent;
      border: 1.5px solid rgba(0,240,168,0.5);
      color: var(--primary-neon);
      border-radius: 50px;
      padding: 0.9rem 2.6rem;
      font-weight: 600;
      transition: 0.2s;
    }
    .btn-outline:hover {
      background: rgba(0,240,168,0.08);
      border-color: var(--primary-neon);
      box-shadow: 0 0 20px rgba(0,240,168,0.25);
    }
    .glass-card {
      background: var(--glass-bg);
      backdrop-filter: blur(16px);
      border: 1px solid var(--glass-border);
      border-radius: var(--card-radius);
      padding: 2rem;
      transition: all 0.3s;
    }
    .glass-card:hover {
      border-color: rgba(0,240,168,0.25);
      box-shadow: 0 12px 30px rgba(0,240,168,0.1);
    }
    .advantages-grid {
      display: grid;
      grid-template-columns: 1.2fr 0.8fr;
      gap: 2rem;
    }
    .right-stack {
      display: flex;
      flex-direction: column;
      gap: 2rem;
    }
    .highlight-magazine {
      display: grid;
      grid-template-columns: repeat(2,1fr);
      gap: 2.2rem;
    }
    .magazine-card {
      display: flex;
      background: rgba(255,255,255,0.02);
      border-radius: 16px;
      overflow: hidden;
      border:1px solid rgba(255,255,255,0.04);
      transition: 0.3s;
    }
    .magazine-card:hover {
      border-color: rgba(0,240,168,0.4);
      transform: translateY(-5px);
    }
    .magazine-img {
      width: 45%;
      min-height: 200px;
      object-fit: cover;
    }
    .magazine-content {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      justify-content: center;
    }
    .timeline-case {
      position: relative;
      max-width: 900px;
      margin: 0 auto;
    }
    .case-item {
      display: flex;
      align-items: center;
      margin-bottom: 3rem;
    }
    .case-card {
      background: rgba(255,255,255,0.03);
      border-left: 4px solid var(--primary-neon);
      border-radius: 14px;
      padding: 1.5rem;
      backdrop-filter: blur(10px);
      width: 70%;
    }
    .compare-table {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
    .compare-col {
      background: rgba(255,255,255,0.02);
      border-radius: 20px;
      padding: 2rem;
      border:1px solid rgba(255,255,255,0.05);
    }
    .compare-col.recommended {
      border: 2px solid var(--primary-neon);
      box-shadow: 0 0 35px rgba(0,240,168,0.15);
    }
    .faq-accordion .accordion-item {
      background: rgba(255,255,255,0.02);
      border:1px solid rgba(255,255,255,0.04);
      border-radius: 12px;
      margin-bottom: 0.8rem;
    }
    .faq-accordion .accordion-title {
      background: transparent;
      color: white;
      font-weight: 600;
      padding: 1.3rem;
      border-left: 3px solid transparent;
    }
    .faq-accordion .is-active .accordion-title {
      border-left: 4px solid var(--primary-neon);
      box-shadow: 0 0 12px var(--primary-neon);
    }
    .cta-banner {
      background: linear-gradient(135deg, #0A0E17 0%, #1A1040 60%, #0A0E17 100%);
      border-radius: 28px;
      padding: 4rem 2rem;
      text-align: center;
      position: relative;
    }
    footer {
      background: #060A10;
      border-top:1px solid rgba(0,240,168,0.2);
      padding: 3rem 0 2rem;
    }
    @media (max-width: 1024px) {
      .hero-grid { flex-direction: column; }
      .hero-left, .hero-right { flex: auto; width: 100%; }
      .hero-right { height: 320px; }
      h1 { font-size: 2.5rem; }
      .advantages-grid { grid-template-columns: 1fr; }
      .highlight-magazine { grid-template-columns: 1fr; }
      .magazine-card { flex-direction: column; }
      .magazine-img { width: 100%; height: 200px; }
      .compare-table { grid-template-columns: 1fr; }
      .menu-links { display: none; }
      .hamburger { display: block; }
    }
    .mobile-menu {
      display: none;
      flex-direction: column;
      background: #0A0E17;
      position: absolute;
      top:72px;
      left:0;
      width:100%;
      padding:1.5rem;
    }
    .mobile-menu a { padding:0.8rem 0; color:white; border-bottom:1px solid rgba(255,255,255,0.05); }