:root {
    --primary: #818cf8;
    --accent: #c084fc;
    --bg: #1e1b4b;
    --text: #e0e7ff;
    --text-dim: rgba(224, 231, 255, 0.7);
    --card-bg: rgba(255, 255, 255, 0.04);
    --card-border: rgba(129, 140, 248, 0.2);
    --grid-line: rgba(129, 140, 248, 0.08);
    --radius-card: 16px;
    --radius-pill: 50px;
  }

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

  body {
    background-color: var(--bg);
    color: var(--text);
    font-family: 'Inter', 'Noto Sans SC', '思源黑体', sans-serif;
    line-height: 1.8;
    font-size: 16px;
    background-image: 
      linear-gradient(var(--grid-line) 1px, transparent 1px),
      linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
    background-size: 40px 40px;
    overflow-x: hidden;
  }

  /* 标题字体 - 思源宋体 */
  h1, h2, h3, .serif-font {
    font-family: 'Source Han Serif SC', 'Noto Serif SC', '思源宋体', serif;
    font-weight: 700;
  }

  /* 导航 */
  .navbar-custom {
    background: rgba(30, 27, 75, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(129, 140, 248, 0.15);
    padding: 16px 0;
    transition: all 0.3s ease;
  }

  .navbar-custom .navbar-brand {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text);
    letter-spacing: 1px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Source Han Serif SC', serif;
  }

  .navbar-custom .nav-link {
    color: var(--text-dim);
    font-weight: 500;
    margin: 0 6px;
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    transition: all 0.3s ease;
  }

  .navbar-custom .nav-link:hover {
    color: var(--text);
    background: rgba(129, 140, 248, 0.1);
  }

  .navbar-toggler {
    border: none;
    outline: none;
  }

  .navbar-toggler:focus {
    box-shadow: none;
  }

  .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(224,231,255,0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
  }

  /* Hero */
  .hero-section {
    position: relative;
    padding: 120px 0 100px;
    background: 
      radial-gradient(ellipse at 20% 50%, rgba(192, 132, 252, 0.15) 0%, transparent 60%),
      radial-gradient(ellipse at 80% 20%, rgba(129, 140, 248, 0.15) 0%, transparent 60%);
    overflow: hidden;
  }

  .hero-magazine {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0,0,0,0.4);
    transform: rotate(-2deg) scale(0.98);
    transition: all 0.5s ease;
  }

  .hero-magazine:hover {
    transform: rotate(0deg) scale(1);
  }

  .hero-magazine img {
    width: 100%;
    height: auto;
    min-height: 400px;
    object-fit: cover;
    display: block;
  }

  .hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(30,27,75,0.95) 0%, rgba(30,27,75,0.3) 50%, rgba(30,27,75,0.1) 100%);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 50px;
  }

  .hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: 2px;
    text-shadow: 0 4px 30px rgba(0,0,0,0.5);
  }

  .hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-dim);
    max-width: 500px;
    margin-bottom: 32px;
    font-weight: 300;
    letter-spacing: 0.5px;
  }

  .hero-buttons .btn {
    padding: 14px 40px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: none;
    margin-right: 12px;
    margin-bottom: 10px;
  }

  .btn-primary-custom {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    box-shadow: 0 8px 25px rgba(129, 140, 248, 0.4);
  }

  .btn-primary-custom:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(192, 132, 252, 0.5);
    color: #fff;
  }

  .btn-outline-custom {
    background: transparent;
    color: var(--text);
    border: 2px solid rgba(224, 231, 255, 0.4) !important;
    backdrop-filter: blur(10px);
  }

  .btn-outline-custom:hover {
    border-color: var(--accent) !important;
    color: var(--accent);
    transform: translateY(-3px);
  }

  /* 区块 */
  .section-padding {
    padding: 90px 0;
  }

  .section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    letter-spacing: 1px;
  }

  .section-subtitle {
    color: var(--text-dim);
    font-size: 1.05rem;
    margin-bottom: 50px;
    font-weight: 300;
  }

  /* 长文 */
  .longread-wrapper {
    max-width: 800px;
    margin: 0 auto;
  }

  .longread-wrapper p {
    font-size: 1.05rem;
    line-height: 2;
    color: var(--text-dim);
    margin-bottom: 1.8rem;
    font-weight: 300;
    letter-spacing: 0.3px;
  }

  .longread-wrapper p strong {
    color: var(--text);
    font-weight: 600;
  }

  .numbered-list {
    counter-reset: item;
    list-style: none;
    padding: 0;
    margin: 30px 0;
  }

  .numbered-list li {
    counter-increment: item;
    position: relative;
    padding-left: 60px;
    padding-top: 8px;
    padding-bottom: 8px;
    font-size: 1.05rem;
    color: var(--text);
    margin-bottom: 18px;
  }

  .numbered-list li::before {
    content: counter(item, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 8px;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(129, 140, 248, 0.4);
  }

  /* 对比表格 */
  .comparison-wrapper {
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-card);
    padding: 40px;
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    overflow-x: auto;
  }

  .comparison-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
  }

  .comparison-table th,
  .comparison-table td {
    padding: 18px 24px;
    text-align: left;
    border-bottom: 1px solid rgba(224, 231, 255, 0.1);
  }

  .comparison-table th {
    font-family: 'Source Han Serif SC', serif;
    font-size: 1.1rem;
    color: var(--accent);
    font-weight: 600;
    background: rgba(129, 140, 248, 0.05);
    border-bottom: 2px solid rgba(129, 140, 248, 0.3);
  }

  .comparison-table td {
    color: var(--text-dim);
  }

  .comparison-table tr:last-child td {
    border-bottom: none;
  }

  .comparison-table .highlight-col {
    color: var(--text);
    font-weight: 500;
  }

  /* FAQ */
  .faq-item {
    background: rgba(255,255,255,0.03);
    border-radius: var(--radius-card);
    padding: 28px 30px;
    margin-bottom: 20px;
    border: 1px solid var(--card-border);
    transition: all 0.3s ease;
  }

  .faq-item:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  }

  .faq-question {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text);
    font-family: 'Source Han Serif SC', serif;
  }

  .faq-answer {
    color: var(--text-dim);
    font-size: 0.98rem;
  }

  /* 特色卡片 */
  .feature-card {
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-card);
    padding: 36px 28px;
    transition: all 0.3s ease;
    height: 100%;
    backdrop-filter: blur(5px);
  }

  .feature-card:hover {
    transform: scale(1.03);
    border-color: var(--primary);
    box-shadow: 0 15px 40px rgba(0,0,0,0.25);
  }

  .feature-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 18px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  .feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 12px;
    font-family: 'Source Han Serif SC', serif;
  }

  .feature-desc {
    color: var(--text-dim);
    font-size: 0.95rem;
    font-weight: 300;
  }

  /* CTA */
  .cta-section {
    background: linear-gradient(135deg, rgba(129,140,248,0.15), rgba(192,132,252,0.15));
    border-radius: 32px;
    padding: 70px 50px;
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(129,140,248,0.2);
  }

  .cta-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(129,140,248,0.1) 0%, transparent 60%);
    animation: pulse 6s ease infinite alternate;
  }

  @keyframes pulse {
    0% { opacity: 0.5; }
    100% { opacity: 1; }
  }

  .cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
  }

  .cta-text {
    color: var(--text-dim);
    font-size: 1.1rem;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
  }

  /* 友情链接 */
  .friends-section {
    padding: 60px 0 30px;
    border-top: 1px solid rgba(129,140,248,0.1);
    background: rgba(30,27,75,0.5);
  }

  .friends-title {
    font-size: 1.2rem;
    color: var(--text-dim);
    margin-bottom: 20px;
    font-weight: 500;
    letter-spacing: 2px;
  }

  .friends-links {
    color: var(--text-dim);
    font-size: 0.95rem;
    word-break: break-all;
  }

  /* 页脚 */
  .footer {
    padding: 40px 0;
    border-top: 1px solid rgba(129,140,248,0.08);
    background: rgba(30,27,75,0.8);
  }

  .footer-text {
    color: var(--text-dim);
    font-size: 0.9rem;
  }

  .footer-links a {
    color: var(--text-dim);
    text-decoration: none;
    margin: 0 10px;
    transition: color 0.3s;
  }

  .footer-links a:hover {
    color: var(--accent);
  }

  /* 动效 */
  .reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .reveal.active {
    opacity: 1;
    transform: translateY(0);
  }

  .reveal-delay-1 { transition-delay: 0.1s; }
  .reveal-delay-2 { transition-delay: 0.2s; }
  .reveal-delay-3 { transition-delay: 0.3s; }
  .reveal-delay-4 { transition-delay: 0.4s; }
  .reveal-delay-5 { transition-delay: 0.5s; }

  /* 图片懒加载 */
  .lazy-img {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
    background: linear-gradient(110deg, rgba(129,140,248,0.1) 30%, rgba(192,132,252,0.1) 50%, rgba(129,140,248,0.1) 70%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    min-height: 200px;
  }

  .lazy-img.loaded {
    opacity: 1;
    animation: none;
    background: none;
  }

  @keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
  }

  /* 响应式 */
  @media (max-width: 768px) {
    .hero-section {
      padding: 80px 0 60px;
    }
    .hero-title {
      font-size: 2.2rem;
    }
    .hero-overlay {
      padding: 30px;
    }
    .section-title {
      font-size: 1.8rem;
    }
    .comparison-wrapper {
      padding: 20px;
    }
    .comparison-table th,
    .comparison-table td {
      padding: 12px 15px;
      font-size: 0.9rem;
    }
    .cta-section {
      padding: 40px 20px;
    }
    .cta-title {
      font-size: 1.8rem;
    }
  }

  .bg-dots {
    position: absolute;
    width: 300px;
    height: 300px;
    background-image: radial-gradient(circle, rgba(129,140,248,0.3) 1px, transparent 1px);
    background-size: 20px 20px;
    z-index: 0;
  }

  .position-relative {
    position: relative;
    z-index: 1;
  }

/* --- 子页面追加 --- */
/* 本页专属样式 —— 补充站点样式表未覆盖的细节 */
        .about-hero {
            padding: 120px 0 80px;
            position: relative;
        }
.about-hero .hero-title {
            font-size: 3.2rem;
            font-weight: 800;
            margin-bottom: 1.5rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
.about-hero .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-dim);
            max-width: 800px;
            margin: 0 auto 2rem;
            line-height: 1.8;
        }
.about-story {
            position: relative;
            padding: 80px 0;
            background: rgba(30, 27, 75, 0.4);
        }
.story-card {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 2.5rem;
            margin-bottom: 2rem;
            backdrop-filter: blur(8px);
        }
.story-card h3 {
            color: var(--primary);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.8rem;
        }
.story-card h3 i {
            font-size: 1.3rem;
        }
.story-card p {
            color: var(--text);
            line-height: 1.9;
            margin-bottom: 1rem;
        }
.story-card .highlight {
            color: var(--accent);
            font-weight: 600;
        }
.values-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin-top: 2.5rem;
        }
.value-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 2rem;
            text-align: center;
            transition: all 0.3s ease;
        }
.value-item:hover {
            transform: translateY(-5px);
            border-color: var(--primary);
            box-shadow: 0 10px 30px rgba(129, 140, 248, 0.1);
        }
.value-item .value-icon {
            font-size: 2.5rem;
            color: var(--primary);
            margin-bottom: 1rem;
        }
.value-item h4 {
            color: var(--text);
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }
.value-item p {
            color: var(--text-dim);
            font-size: 0.95rem;
            line-height: 1.6;
        }
.stats-section {
            padding: 60px 0;
            background: linear-gradient(135deg, rgba(129, 140, 248, 0.08), rgba(192, 132, 252, 0.08));
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
        }
.stats-wrapper {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2rem;
            text-align: center;
        }
.stat-item h3 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            margin-bottom: 0.5rem;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
.stat-item p {
            color: var(--text-dim);
            font-size: 1rem;
            font-weight: 500;
        }
.timeline-wrapper {
            position: relative;
            padding: 40px 0;
        }
.timeline-item {
            position: relative;
            padding-left: 40px;
            margin-bottom: 2.5rem;
            border-left: 2px solid var(--card-border);
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -9px;
            top: 5px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--primary);
            border: 3px solid var(--bg);
        }
.timeline-item .timeline-date {
            color: var(--accent);
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }
.timeline-item h4 {
            color: var(--text);
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 0.8rem;
        }
.timeline-item p {
            color: var(--text-dim);
            line-height: 1.7;
            font-size: 0.95rem;
        }
.team-note {
            background: linear-gradient(135deg, rgba(129, 140, 248, 0.05), rgba(192, 132, 252, 0.05));
            border-radius: var(--radius-card);
            padding: 2rem;
            margin-top: 2.5rem;
            border: 1px solid var(--card-border);
        }
.about-hero {
                padding: 90px 0 50px;
            }
.about-hero .hero-title {
                font-size: 2.2rem;
            }
.story-card {
                padding: 1.5rem;
            }
.stats-wrapper {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
.stat-item h3 {
                font-size: 2rem;
            }

/* --- 子页面追加 --- */
.disclaimer-content {
            max-width: 900px;
            margin: 0 auto;
            padding: 2rem 0;
        }
.disclaimer-content h2 {
            color: var(--primary);
            font-weight: 700;
            margin-top: 2.5rem;
            margin-bottom: 1.2rem;
            font-size: 1.6rem;
            position: relative;
            padding-left: 1.2rem;
        }
.disclaimer-content h2::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0.3rem;
            width: 4px;
            height: 1.4rem;
            background: var(--accent);
            border-radius: 2px;
        }
.disclaimer-content p {
            color: var(--text-dim);
            line-height: 1.9;
            margin-bottom: 1.2rem;
            font-size: 0.98rem;
        }
.disclaimer-content ul {
            color: var(--text-dim);
            line-height: 1.9;
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }
.disclaimer-content ul li {
            margin-bottom: 0.5rem;
            position: relative;
        }
.disclaimer-content ul li::marker {
            color: var(--accent);
        }
.disclaimer-highlight {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-card);
            padding: 1.8rem;
            margin: 2rem 0;
        }
.disclaimer-highlight h3 {
            color: var(--primary);
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 1rem;
        }
.disclaimer-highlight p {
            margin-bottom: 0.8rem;
        }
.last-updated {
            color: var(--text-dim);
            font-size: 0.9rem;
            text-align: right;
            margin-top: 3rem;
            padding-top: 1rem;
            border-top: 1px solid var(--card-border);
        }
.hero-disclaimer {
            padding: 4rem 0 2rem;
            text-align: center;
        }
.hero-disclaimer .page-badge {
            display: inline-block;
            background: rgba(129, 140, 248, 0.15);
            color: var(--primary);
            padding: 0.4rem 1.2rem;
            border-radius: var(--radius-pill);
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 1rem;
            border: 1px solid var(--card-border);
        }
.hero-disclaimer h1 {
            color: var(--text);
            font-weight: 800;
            font-size: 2.2rem;
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
.hero-disclaimer p {
            color: var(--text-dim);
            font-size: 1.1rem;
            max-width: 700px;
            margin: 0 auto;
        }
.footer-link {
            color: var(--text-dim);
            text-decoration: none;
            transition: color 0.3s;
            margin: 0 0.5rem;
        }
.footer-link:hover {
            color: var(--primary);
        }
.active-nav {
            color: var(--primary) !important;
            font-weight: 600;
        }

/* --- 子页面追加 --- */
/* 为了保持与首页完全一致的深色视觉，覆盖 bootstrap 默认白底卡片/表单/手风琴 */
    .card, .card-body, .card-header, .card-footer,
    .accordion-item, .accordion-button, .accordion-body,
    .list-group-item, .dropdown-menu, .dropdown-item {
      background: var(--card-bg);
      color: var(--text);
      border-color: var(--card-border);
    }
.accordion-button:not(.collapsed) {
      background: rgba(129, 140, 248, 0.12);
      color: var(--text);
      box-shadow: none;
    }
.accordion-button:focus {
      box-shadow: 0 0 0 0.2rem rgba(129, 140, 248, 0.2);
    }
.form-control, .form-select {
      background: rgba(0, 0, 0, 0.35);
      border: 1px solid var(--card-border);
      color: var(--text);
    }
.form-control::placeholder {
      color: rgba(224, 231, 255, 0.5);
    }
.form-control:focus {
      background: rgba(0, 0, 0, 0.5);
      color: var(--text);
      border-color: var(--primary);
    }
/* 页内小标题微调 */
    .privacy-subtitle {
      color: var(--accent);
      font-weight: 600;
      letter-spacing: -0.02em;
      margin-bottom: 1rem;
      border-left: 3px solid var(--primary);
      padding-left: 0.75rem;
    }
.privacy-lead {
      font-size: 1.1rem;
      color: var(--text-dim);
    }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.card-title { color:#e0e7ff !important; }
.card-text { color:#e0e7ff !important; }
.table { color:#e0e7ff !important; border-color:rgba(255,255,255,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#e0e7ff !important; }