:root {
      --primary: #4f46e5;
      --accent: #7c3aed;
      --bg: #f5f3ff;
      --text: #1e1b4b;
      --soft: #e4e0fa;
      --white: #ffffff;
      --border: #c7bff7;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      background: var(--bg);
      color: var(--text);
      font-family: 'Inter', sans-serif;
      line-height: 1.6;
      letter-spacing: 0.2px;
      overflow-x: hidden;
    }
    h1, h2, h3, .hand-font {
      font-family: 'Comic Sans MS', 'Chalkboard SE', 'Segoe Print', cursive, sans-serif;
      font-weight: 700;
      letter-spacing: 0.02em;
    }
    /* 渐变光晕背景 */
    .glow-overlay {
      position: fixed;
      top: 0; left: 0;
      width: 100%; height: 100%;
      pointer-events: none;
      z-index: 0;
      background: 
        radial-gradient(circle at 20% 30%, rgba(124, 58, 237, 0.12) 0%, transparent 25%),
        radial-gradient(circle at 80% 10%, rgba(79, 70, 229, 0.15) 0%, transparent 30%),
        radial-gradient(circle at 40% 90%, rgba(124, 58, 237, 0.08) 0%, transparent 20%);
    }
    .container-custom {
      position: relative;
      z-index: 2;
    }
    /* 导航吸顶 */
    .sticky-nav {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(245, 243, 255, 0.75);
      backdrop-filter: blur(10px);
      border-bottom: 2px solid var(--primary);
    }
    .navbar-toggler:focus { box-shadow: none; }
    .navbar-brand {
      font-weight: 800;
      font-size: 1.6rem;
      color: var(--primary) !important;
      letter-spacing: -0.5px;
    }
    .navbar-brand i { margin-right: 8px; }
    .nav-link {
      color: var(--text) !important;
      font-weight: 600;
      margin: 0 10px;
      border-bottom: 2px solid transparent;
      transition: 0.2s;
    }
    .nav-link:hover { border-bottom-color: var(--accent); color: var(--accent) !important; }
    .btn-outline-primary { border-color: var(--primary); color: var(--primary); }
    .btn-outline-primary:hover { background: var(--primary); color: white; }
    .btn-primary-custom { background: var(--primary); border: none; color: white; border-radius: 30px; padding: 10px 24px; font-weight: 600; }
    .btn-primary-custom:hover { background: var(--accent); transform: translateY(-2px); }
    /* 卡片 hover 上浮+阴影 */
    .hover-card {
      transition: transform 0.35s ease, box-shadow 0.35s ease;
      border: 2px solid var(--border);
      background: rgba(255,255,255,0.6);
      border-radius: 1rem;
    }
    .hover-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 14px 28px rgba(79, 70, 229, 0.12), 0 6px 12px rgba(124, 58, 237, 0.08);
    }
    /* 双色块左右分屏 */
    .split-block {
      display: flex;
      flex-wrap: wrap;
      align-items: stretch;
      border: 2px solid var(--primary);
      border-radius: 2rem;
      overflow: hidden;
      background: white;
    }
    .split-left, .split-right {
      padding: 2.5rem 2rem;
    }
    .split-left {
      background: linear-gradient(145deg, var(--bg), #ffffff);
      flex: 1 1 45%;
    }
    .split-right {
      background: var(--primary);
      color: white;
      flex: 1 1 55%;
    }
    .list-steps {
      list-style: none;
      counter-reset: step-counter;
    }
    .list-steps li {
      counter-increment: step-counter;
      padding: 0.8rem 0 0.8rem 3rem;
      position: relative;
      font-size: 1.05rem;
      border-bottom: 1px dashed var(--border);
    }
    .list-steps li::before {
      content: counter(step-counter);
      position: absolute;
      left: 0;
      top: 0.6rem;
      width: 2rem;
      height: 2rem;
      background: var(--accent);
      color: white;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
    }
    /* 对比表格 */
    .compare-table {
      width: 100%;
      border-collapse: collapse;
      border: 2px solid var(--border);
      background: white;
    }
    .compare-table th, .compare-table td {
      padding: 1rem;
      border: 1px solid var(--border);
      text-align: center;
    }
    .compare-table th {
      background: var(--primary);
      color: white;
      font-weight: 700;
    }
    .compare-table tr:nth-child(even) { background: #f3f0ff; }
    .stat-number {
      font-size: 3rem;
      font-weight: 800;
      color: var(--primary);
      line-height: 1.2;
      display: inline-block;
    }
    .stat-label { font-size: 0.9rem; font-weight: 500; letter-spacing: 1px; }
    /* 数字滚动 */
    .count-up { transition: all 0.3s; }
    /* 底部友情链接 */
    .friend-links {
      border-top: 2px solid var(--primary);
      padding-top: 2rem;
      margin-top: 3rem;
      text-align: center;
    }
    .friend-links a {
      color: var(--primary);
      margin: 0 1rem;
      text-decoration: none;
      font-weight: 500;
    }
    .friend-links a:hover { text-decoration: underline; color: var(--accent); }
    footer {
      border-top: 2px solid var(--border);
      background: white;
      color: var(--text);
    }
    /* 锚点偏移 */
    section { scroll-margin-top: 90px; }
    /* 错落动画 */
    .reveal-card {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.8s cubic-bezier(0.2, 0.7, 0.3, 1), transform 0.8s cubic-bezier(0.2, 0.7, 0.3, 1);
    }
    .reveal-card.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .delay-1 { transition-delay: 0.1s; }
    .delay-2 { transition-delay: 0.2s; }
    .delay-3 { transition-delay: 0.3s; }
    .delay-4 { transition-delay: 0.4s; }

/* --- 子页面追加 --- */
/* 本页专属样式 - 关于页 */
        .about-hero {
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            padding: 80px 0 60px;
            position: relative;
            overflow: hidden;
            color: var(--white);
        }
.about-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 16px;
        }
.about-hero .lead {
            font-size: 1.1rem;
            opacity: .92;
            max-width: 700px;
        }
.about-section {
            padding: 70px 0;
        }
.about-section.alt {
            background: var(--white);
        }
.about-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 32px;
            height: 100%;
            transition: transform .3s, box-shadow .3s;
        }
.about-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 30px rgba(79,70,229,.08);
        }
.about-card .icon-box {
            width: 52px;
            height: 52px;
            border-radius: 12px;
            background: var(--soft);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 18px;
            color: var(--primary);
            font-size: 1.3rem;
        }
.about-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 12px;
        }
.about-card p {
            color: var(--text);
            font-size: .95rem;
            line-height: 1.7;
            opacity: .85;
        }
.timeline {
            position: relative;
            padding-left: 32px;
            margin: 20px 0;
        }
.timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 4px;
            bottom: 4px;
            width: 2px;
            background: var(--soft);
        }
.timeline-item {
            position: relative;
            padding: 0 0 28px 20px;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--primary);
            border: 2px solid var(--white);
            box-shadow: 0 0 0 2px var(--primary);
        }
.timeline-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }
.timeline-item p {
            color: var(--text);
            font-size: .92rem;
            line-height: 1.6;
            opacity: .8;
        }
.quote-block {
            background: var(--soft);
            border-radius: 16px;
            padding: 32px;
            position: relative;
            margin: 30px 0;
        }
.quote-block i {
            color: var(--primary);
            font-size: 1.5rem;
            margin-bottom: 12px;
            display: block;
        }
.quote-block p {
            font-size: 1.1rem;
            line-height: 1.8;
            color: var(--text);
            font-style: italic;
        }
.quote-block .quote-author {
            margin-top: 16px;
            font-style: normal;
            font-weight: 600;
            color: var(--primary);
        }
.value-list li {
            padding: 8px 0;
            border-bottom: 1px dashed var(--border);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: .95rem;
            color: var(--text);
        }
.value-list li:last-child {
            border-bottom: none;
        }
.value-list li i {
            color: var(--primary);
            margin-top: 3px;
            font-size: .9rem;
        }
.stat-inline {
            background: var(--soft);
            border-radius: 12px;
            padding: 20px;
            text-align: center;
            margin-bottom: 20px;
        }
.stat-inline .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary);
            display: block;
            line-height: 1.2;
        }
.stat-inline .stat-label {
            font-size: .85rem;
            color: var(--text);
            opacity: .7;
        }
.about-hero h1 {
                font-size: 2rem;
            }
.about-section {
                padding: 50px 0;
            }

/* --- 子页面追加 --- */
h1, h2, h3, h4, .navbar-brand { font-weight: 700; letter-spacing: -0.01em; }
.glow-overlay::before {
      content: '';
      position: absolute; top: -10%; left: -20%; width: 60%; height: 80%;
      background: radial-gradient(circle at left top, rgba(79,70,229,.15), transparent 60%);
      pointer-events: none; z-index: 0;
    }
/* 导航栏 */
    .sticky-nav {
      position: sticky; top: 0; z-index: 100;
      background: rgba(245, 243, 255, 0.85);
      backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border);
      padding: 16px 0;
    }
.navbar-toggler { border: 1px solid var(--border); color: var(--text); }
/* 按钮 */
    .btn-primary-custom {
      background: var(--primary);
      border: none;
      color: white;
      padding: 12px 32px;
      border-radius: 40px;
      font-weight: 600;
      box-shadow: 0 8px 20px rgba(79, 70, 229, 0.25);
      transition: all 0.2s;
    }
/* 卡片 / 区块 */
    .hover-card {
      background: var(--white);
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 28px 24px;
      transition: 0.2s;
    }
/* 列表 */
    .list-steps { list-style: none; padding: 0; margin: 0; }
/* 表格样式 */
    .compare-table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: 20px; overflow: hidden; box-shadow: 0 4px 20px rgba(0,0,0,0.03); }
/* 统计 */
    .stat-number { font-size: 2.8rem; font-weight: 800; color: var(--primary); line-height: 1.2; }
/* 友情链接 */
    .friend-links { border-top: 1px solid var(--border); padding-top: 28px; margin-top: 40px; text-align: center; color: var(--text); opacity: 0.8; }
/* 表单 */
    .register-form .form-group { margin-bottom: 24px; }
.register-form .form-label { font-weight: 600; color: var(--text); }
.register-form .form-control {
      background: rgba(255, 255, 255, 0.7);
      border: 1px solid var(--border);
      border-radius: 40px;
      padding: 14px 18px;
      font-size: 1rem;
      color: var(--text);
      transition: 0.2s;
    }
.register-form .form-control:focus {
      border-color: var(--accent);
      outline: none;
      background: white;
      box-shadow: 0 0 0 4px rgba(124, 58, 237, 0.1);
    }
.form-check-input { border: 1px solid var(--border); }
.form-check-input:checked { background-color: var(--primary); border-color: var(--primary); }
/* 延迟动画 */
    .reveal-card { opacity: 0; transform: translateY(20px); animation: fadeUp 0.6s forwards; }
to { opacity: 1; transform: none; }