/* roulang page: index */
@import url('/assets/css/vendor/0b67347532-css2.css');
    
    :root {
      --primary: #E5004F;
      --primary-soft: rgba(229,0,79,0.18);
      --secondary: #00E5A0;
      --accent: #FFB800;
      --bg: #0A0C10;
      --surface: #14171E;
      --surface-border: rgba(255,255,255,0.06);
      --text: #F2F4F8;
      --text-muted: #9CA3AF;
      --radius-card: 12px;
      --radius-btn: 8px;
      --glow-primary: 0 0 30px rgba(229,0,79,0.25);
      --font-title: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', system-ui, sans-serif;
      --font-body: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', 'Inter', sans-serif;
    }

    * {
      box-sizing: border-box;
    }

    body {
      margin: 0;
      background-color: var(--bg);
      color: var(--text);
      font-family: var(--font-body);
      line-height: 1.8;
      -webkit-font-smoothing: antialiased;
    }

    h1, h2, h3, .stats-number {
      font-family: var(--font-title);
      font-weight: 700;
      line-height: 1.2;
      margin: 0 0 0.5rem 0;
    }

    h1 { font-size: clamp(2.5rem, 8vw, 3.5rem); letter-spacing: -0.02em; }
    h2 { font-size: clamp(2rem, 6vw, 2.5rem); }
    h3 { font-size: 1.35rem; }

    .container-main {
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }

    /* 小屏 padding */
    @media (max-width: 720px) {
      .container-main {
        padding: 0 16px;
      }
    }

    /* ---- 通用组件 ---- */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      padding: 0.7rem 1.8rem;
      border-radius: var(--radius-btn);
      font-weight: 600;
      transition: all 0.25s ease;
      font-family: var(--font-title);
      letter-spacing: 0.3px;
      background: transparent;
      border: 1px solid transparent;
      cursor: pointer;
    }
    .btn-primary {
      background: var(--primary);
      color: #fff;
      border-color: var(--primary);
    }
    .btn-primary:hover {
      background: #ff145a;
      box-shadow: var(--glow-primary), 0 8px 18px rgba(229,0,79,0.4);
      transform: translateY(-1px);
    }
    .btn-secondary {
      border: 1px solid var(--primary);
      color: var(--primary);
      background: transparent;
    }
    .btn-secondary:hover {
      background: var(--primary-soft);
      border-color: var(--primary);
      color: #fff;
    }
    .btn-cta {
      background: var(--secondary);
      color: #0A0C10;
      font-weight: 700;
      animation: pulse2 2s infinite;
    }
    @keyframes pulse2 {
      0% { box-shadow: 0 0 0 0 rgba(0,229,160,0.6); }
      70% { box-shadow: 0 0 0 12px rgba(0,229,160,0); }
      100% { box-shadow: 0 0 0 0 rgba(0,229,160,0); }
    }
    .section {
      padding: 4.5rem 0;
    }
    @media (max-width: 768px) {
      .section { padding: 3rem 0; }
    }

    /* 导航栏 */
    .navbar {
      position: fixed;
      top: 0;
      width: 100%;
      z-index: 50;
      background: rgba(10,12,16,0.85);
      backdrop-filter: blur(12px);
      border-bottom: 1px solid rgba(255,184,0,0.2);
      transition: background 0.3s;
    }
    .nav-container {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
      max-width: 1280px;
      margin: 0 auto;
      padding: 0 24px;
    }
    .logo {
      font-family: var(--font-title);
      font-weight: 800;
      font-size: 1.7rem;
      color: #fff;
      background: linear-gradient(135deg, var(--primary), var(--accent));
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    .nav-links {
      display: flex;
      gap: 2rem;
      font-weight: 500;
    }
    .nav-links a {
      color: var(--text-muted);
      text-decoration: none;
      font-size: 0.95rem;
      position: relative;
    }
    .nav-links a:hover, .nav-links a.active {
      color: #fff;
    }
    .nav-links a.active::after {
      content: '';
      position: absolute;
      bottom: -6px;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--secondary);
    }
    .menu-toggle {
      display: none;
      font-size: 1.8rem;
      color: #fff;
      background: none;
      border: none;
    }
    @media (max-width: 768px) {
      .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background: rgba(10,12,16,0.96);
        backdrop-filter: blur(10px);
        padding: 1.5rem 2rem;
        gap: 1.5rem;
        font-size: 1.2rem;
      }
      .nav-links.open { display: flex; }
      .menu-toggle { display: block; }
    }

    /* hero双栏 */
    .hero-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      min-height: 100vh;
      align-items: center;
    }
    .hero-left { padding-right: 2rem; }
    .hero-right {
      position: relative;
      height: 100%;
      min-height: 500px;
      background: url('/assets/images/coverpic/hero-bg.webp') center/cover no-repeat;
      background-blend-mode: overlay;
      border-radius: 28px;
      overflow: hidden;
    }
    .hero-gradient {
      position: absolute;
      inset: 0;
      background: linear-gradient(135deg, rgba(229,0,79,0.4), rgba(255,184,0,0.3));
    }
    .particles {
      position: absolute;
      width: 350px;
      height: 350px;
      background: radial-gradient(circle, rgba(0,229,160,0.3) 5%, transparent 30%);
      animation: floatParticle 8s infinite alternate;
      top: 20%;
      left: 10%;
    }
    @keyframes floatParticle {
      0%{ transform: translate(0, 0) scale(1);}
      100%{ transform: translate(30px, -30px) scale(1.2);}
    }
    @media (max-width: 768px) {
      .hero-grid { grid-template-columns: 1fr; }
      .hero-right { min-height: 350px; order: -1; }
    }

    /* 亮点网格卡 */
    .grid-highlights {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .card-feature {
      background: var(--surface);
      border: 1px solid var(--surface-border);
      border-radius: var(--radius-card);
      padding: 2rem 1.5rem;
      transition: all 0.25s;
      position: relative;
    }
    .col-span-1-5 { grid-column: span 1; }
    @media (min-width: 1025px) {
      .aw-1 { grid-column: span 1.5; }
      .aw-2 { grid-column: span 1.5; }
    }
    .card-feature:hover {
      border-color: rgba(229,0,79,0.6);
      box-shadow: var(--glow-primary);
    }
    .card-feature .top-line {
      height: 4px;
      width: 60px;
      background: linear-gradient(90deg, var(--primary), var(--secondary));
      margin-bottom: 1rem;
      border-radius: 2px;
    }
    .stat-big {
      font-size: 2.5rem;
      font-weight: 800;
      color: var(--secondary);
      font-family: 'Inter', sans-serif;
    }

    /* 案例瀑布 */
    .masonry-cases {
      columns: 3;
      column-gap: 20px;
    }
    .case-card {
      break-inside: avoid;
      margin-bottom: 20px;
      background: var(--surface);
      border-radius: var(--radius-card);
      overflow: hidden;
      border: 1px solid var(--surface-border);
      transition: 0.2s;
    }
    .case-card:hover { border-color: var(--primary); }
    .case-img {
      width: 100%;
      display: block;
      transition: filter 0.3s;
    }
    .case-card:hover .case-img { filter: brightness(0.85) saturate(1.2); }
    @media (max-width: 1024px) { .masonry-cases { columns: 2; } }
    @media (max-width: 640px) { .masonry-cases { columns: 1; } }

    /* 对比表 */
    .compare-table {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 2rem;
    }
    .vs-card {
      background: var(--surface);
      padding: 2rem;
      border-radius: var(--radius-card);
    }
    .vs-left { opacity: 0.8; }
    .line-item { display: flex; justify-content: space-between; padding: 0.75rem 0; border-bottom: 1px solid var(--surface-border); }
    .badge-win { color: var(--secondary); font-weight: bold; }

    /* FAQ 手风琴 */
    .faq-item {
      background: var(--surface);
      border-radius: var(--radius-card);
      margin-bottom: 12px;
    }
    .faq-question {
      width: 100%;
      background: transparent;
      border: none;
      color: #fff;
      padding: 1.2rem;
      font-size: 1.1rem;
      font-weight: 600;
      display: flex;
      justify-content: space-between;
    }
    .faq-answer {
      padding: 0 1.2rem 1.2rem;
      color: var(--text-muted);
      display: none;
    }
    .faq-item.open .faq-answer { display: block; }

    footer { border-top: 1px solid rgba(255,184,0,0.25); margin-top: 2rem; }