/* roulang page: index */
:root {
      --color-primary: #121826;
      --color-accent: #2563EB;
      --color-accent-hover: #1D4ED8;
      --color-text-main: #1E293B;
      --color-text-muted: #475569;
      --color-bg-base: #FFFFFF;
      --color-bg-alt: #F8FAFC;
      --color-border: #E2E8F0;
      --radius-sm: 6px;
      --radius-md: 10px;
      --radius-lg: 16px;
      --shadow-subtle: 0 4px 20px -2px rgba(15, 23, 42, 0.05);
      --shadow-hover: 0 10px 25px -4px rgba(15, 23, 42, 0.08);
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    body {
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Inter", sans-serif;
      color: var(--color-text-main);
      background-color: var(--color-bg-base);
      line-height: 1.7;
      text-rendering: optimizeLegibility;
      -webkit-font-smoothing: antialiased;
      overflow-x: hidden;
    }

    html {
      scroll-behavior: smooth;
    }

    .container-custom {
      max-width: 1200px;
      margin-left: auto;
      margin-right: auto;
      padding-left: 24px;
      padding-right: 24px;
    }

    .section-spacing {
      padding-top: 90px;
      padding-bottom: 90px;
    }

    .card-base {
      background: #FFFFFF;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      box-shadow: var(--shadow-subtle);
      transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    }
    .card-base:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow-hover);
      border-color: #CBD5E1;
    }

    .coupon-ticket {
      position: relative;
      background: #FFFFFF;
      border: 1px dashed #CBD5E1;
      border-radius: var(--radius-md);
      overflow: hidden;
    }
    .coupon-ticket::before, .coupon-ticket::after {
      content: '';
      position: absolute;
      width: 16px;
      height: 16px;
      background: var(--color-bg-alt);
      border-radius: 50%;
      top: 50%;
      transform: translateY(-50%);
    }
    .coupon-ticket::before { left: -8px; border-right: 1px solid #CBD5E1; }
    .coupon-ticket::after { right: -8px; border-left: 1px solid #CBD5E1; }

    .btn-solid {
      background-color: var(--color-accent);
      color: #FFFFFF;
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 500;
    }
    .btn-solid:hover {
      background-color: var(--color-accent-hover);
      box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    }

    .btn-outline {
      border: 1px solid var(--color-border);
      background-color: #FFFFFF;
      color: var(--color-text-main);
      transition: all 0.2s ease;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 500;
    }
    .btn-outline:hover {
      border-color: #94A3B8;
      background-color: #F8FAFC;
    }

    /* Modal Toast */
    #toast-notice {
      display: none;
      position: fixed;
      top: 24px;
      left: 50%;
      transform: translateX(-50%);
      z-index: 9999;
      background: #121826;
      color: #ffffff;
      padding: 12px 24px;
      border-radius: 9999px;
      box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
      font-size: 14px;
      animation: fadeIn 0.3s ease;
    }
    @keyframes fadeIn {
      from { opacity: 0; transform: translate(-50%, -10px); }
      to { opacity: 1; transform: translate(-50%, 0); }
    }