:root {
    --primary: #0891b2;
    --accent: #0ea5e9;
    --bg: #ecfeff;
    --text: #083344;
    --border-color: #67e8f9;
    --light-bg: #f0fdfa;
    --white: #ffffff;
  }

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

  body {
    font-family: 'Inter', 'Source Han Sans SC', '思源黑体', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.75;
    font-weight: 300;
    letter-spacing: 0.01em;
  }

  h1, h2, h3, h4, .serif-title {
    font-family: 'Source Han Serif SC', '思源宋体', 'Songti SC', serif;
    font-weight: 800;
    color: var(--text);
  }

  a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
  }
  a:hover { color: var(--accent); }

  /* 导航栏 */
  .navbar {
    background-color: var(--white);
    border-bottom: 2px solid var(--border-color);
    padding: 0.8rem 0;
  }
  .navbar-brand {
    font-family: 'Source Han Serif SC', '思源宋体', serif;
    font-size: 2rem;
    font-weight: 900;
    color: var(--primary) !important;
    letter-spacing: 0.02em;
  }
  .navbar-toggler {
    border: 2px solid var(--primary);
    border-radius: 0;
    padding: 0.25rem 0.5rem;
  }
  .navbar-toggler:focus { box-shadow: none; }
  .nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text) !important;
    padding: 0.5rem 1rem !important;
    margin: 0 0.1rem;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s;
  }
  .nav-link:hover {
    border-bottom-color: var(--primary);
  }
  @media (max-width: 768px) {
    .navbar-brand { font-size: 1.5rem; }
    .nav-link { padding: 0.5rem 0 !important; }
  }

  /* Hero 区域 */
  .hero-section {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background-image: url('{随机图片}');
    background-size: cover;
    background-position: center;
    overflow: hidden;
    border-bottom: 3px solid var(--primary);
  }
  .hero-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(135deg, rgba(8, 51, 68, 0.92) 0%, rgba(8, 51, 68, 0.75) 50%, rgba(8, 51, 68, 0.85) 100%);
  }
  .hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 3rem 1.5rem;
    max-width: 900px;
  }
  .hero-title {
    font-size: clamp(2.8rem, 8vw, 5rem);
    font-weight: 900;
    color: var(--bg);
    letter-spacing: 0.02em;
    margin-bottom: 1.2rem;
    text-shadow: 0 2px 12px rgba(0,0,0,0.3);
  }
  .hero-subtitle {
    font-size: 1.3rem;
    font-weight: 300;
    color: var(--bg);
    opacity: 0.9;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
  }
  .hero-btn {
    background-color: var(--primary);
    color: var(--white);
    border: 2px solid var(--white);
    padding: 0.8rem 2.5rem;
    font-weight: 600;
    font-size: 1rem;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    border-radius: 0;
    display: inline-block;
  }
  .hero-btn:hover {
    background-color: var(--accent);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(14, 165, 233, 0.4);
  }

  /* 区块通用 */
  .section {
    padding: 5rem 0;
    position: relative;
  }
  .section-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    margin-bottom: 2.5rem;
    position: relative;
    display: inline-block;
  }
  .section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: var(--primary);
  }
  .section-subtitle {
    font-size: 1.1rem;
    font-weight: 300;
    margin-bottom: 3rem;
    color: var(--text);
    opacity: 0.8;
  }

  /* 长文介绍 */
  .intro-section {
    background-color: var(--white);
    border-top: 3px solid var(--border-color);
    border-bottom: 3px solid var(--border-color);
  }
  .intro-text {
    font-size: 1.05rem;
    line-height: 2;
    color: var(--text);
    max-width: 800px;
  }
  .numbered-list {
    margin-top: 2rem;
    padding-left: 0;
    list-style: none;
    counter-reset: intro-counter;
  }
  .numbered-list li {
    counter-increment: intro-counter;
    position: relative;
    padding-left: 3.5rem;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.9;
  }
  .numbered-list li::before {
    content: counter(intro-counter, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0.1rem;
    font-family: 'Source Han Serif SC', serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--primary);
  }

  /* 对比表格 */
  .compare-section {
    background-color: var(--light-bg);
    border-bottom: 3px solid var(--border-color);
  }
  .table-custom {
    width: 100%;
    border-collapse: collapse;
    font-size: 1rem;
  }
  .table-custom th,
  .table-custom td {
    border: 2px solid var(--border-color);
    padding: 1.2rem 1.5rem;
    text-align: left;
    background-color: var(--white);
  }
  .table-custom th {
    background-color: var(--primary);
    color: var(--white);
    font-weight: 700;
    font-size: 1.05rem;
    letter-spacing: 0.03em;
  }
  .table-custom td:first-child {
    font-weight: 600;
    background-color: #f8fafc;
  }
  .table-custom .fa-check { color: var(--primary); margin-right: 0.3rem; }
  .table-custom .fa-xmark { color: #dc2626; margin-right: 0.3rem; }

  /* FAQ */
  .faq-section {
    background-color: var(--white);
    border-bottom: 3px solid var(--border-color);
  }
  .faq-item {
    border: 2px solid var(--border-color);
    margin-bottom: 1.5rem;
    padding: 1.5rem 2rem;
    background-color: var(--light-bg);
    transition: border-color 0.2s;
  }
  .faq-item:hover { border-color: var(--primary); }
  .faq-question {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: 'Source Han Serif SC', serif;
    margin-bottom: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
  }
  .faq-question i {
    color: var(--primary);
    font-size: 1.1rem;
  }
  .faq-answer {
    font-size: 1rem;
    line-height: 1.9;
    opacity: 0.85;
  }

  /* 特色区块 */
  .features-section {
    background-color: var(--light-bg);
    border-bottom: 3px solid var(--border-color);
  }
  .feature-card {
    border: 2px solid var(--border-color);
    background-color: var(--white);
    padding: 2rem 1.5rem;
    height: 100%;
    transition: border-color 0.3s;
  }
  .feature-card:hover { border-color: var(--primary); }
  .feature-icon {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1.2rem;
  }
  .feature-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.8rem;
  }
  .feature-card p {
    font-size: 0.95rem;
    opacity: 0.85;
  }

  /* CTA */
  .cta-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    padding: 5rem 0;
    border-bottom: 3px solid var(--text);
    position: relative;
    overflow: hidden;
  }
  .cta-section::before {
    content: '';
    position: absolute;
    top: 0; left: -20%;
    width: 140%; height: 100%;
    background: repeating-linear-gradient(
      45deg,
      transparent,
      transparent 20px,
      rgba(255,255,255,0.03) 20px,
      rgba(255,255,255,0.03) 40px
    );
  }
  .cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 1.2rem;
  }
  .cta-text {
    color: var(--white);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.95;
  }
  .cta-btn {
    background-color: var(--white);
    color: var(--primary);
    border: none;
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    transition: all 0.3s ease;
    border-radius: 0;
    position: relative;
    overflow: hidden;
    display: inline-block;
  }
  .cta-btn::after {
    content: '';
    position: absolute;
    top: 0; left: -100%;
    width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s ease;
  }
  .cta-btn:hover {
    background-color: var(--bg);
    transform: translateY(-2px);
  }
  .cta-btn:hover::after { left: 100%; }

  /* 友情链接 */
  .friends-section {
    background-color: var(--white);
    padding: 3rem 0;
    border-bottom: 2px solid var(--border-color);
  }
  .friends-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    font-family: 'Inter', sans-serif;
  }

  /* 页脚 */
  .footer {
    background-color: var(--text);
    color: var(--bg);
    padding: 3rem 0;
  }
  .footer .brand {
    font-family: 'Source Han Serif SC', serif;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--bg);
    margin-bottom: 1rem;
  }
  .footer a {
    color: var(--border-color);
  }
  .footer a:hover { color: var(--white); }

  /* 回到顶部 */
  .back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background-color: var(--primary);
    color: var(--white);
    border: 2px solid var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  }
  .back-to-top.show {
    opacity: 1;
    visibility: visible;
  }
  .back-to-top:hover {
    background-color: var(--accent);
    transform: translateY(-3px);
  }

  /* 滚动动效 */
  .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
  }
  .reveal.active {
    opacity: 1;
    transform: translateY(0);
  }

  /* 波浪斜切 */
  .wave-divider {
    position: relative;
    height: 60px;
    background-color: transparent;
    overflow: hidden;
  }
  .wave-divider svg {
    position: absolute;
    bottom: 0;
    width: 100%;
    height: 60px;
  }

  @media (max-width: 768px) {
    .section { padding: 3.5rem 0; }
    .hero-section { min-height: 60vh; }
    .hero-title { font-size: 2.5rem; }
    .cta-title { font-size: 2rem; }
    .table-custom th, .table-custom td { padding: 0.8rem; font-size: 0.9rem; }
    .faq-question { font-size: 1.05rem; }
  }

/* --- 子页面追加 --- */
.about-hero { padding: 120px 0 60px; background: linear-gradient(135deg, #ecfeff 0%, #cffafe 100%); }
.about-hero h1 { font-size: 2.5rem; font-weight: 800; color: var(--text); margin-bottom: 1rem; }
.about-hero p.lead { font-size: 1.1rem; color: #155e75; max-width: 700px; }
.story-section { padding: 60px 0; }
.story-section h2 { font-size: 1.75rem; font-weight: 700; color: var(--text); margin-bottom: 1.5rem; }
.story-section p { line-height: 1.8; color: #155e75; margin-bottom: 1rem; }
.value-card { background: var(--white); border: 1px solid var(--border-color); border-radius: 12px; padding: 24px; margin-bottom: 20px; transition: box-shadow 0.3s ease; }
.value-card:hover { box-shadow: 0 4px 20px rgba(8, 145, 178, 0.1); }
.value-card i { font-size: 2rem; color: var(--primary); margin-bottom: 12px; }
.value-card h3 { font-size: 1.1rem; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.value-card p { font-size: 0.9rem; color: #155e75; line-height: 1.6; margin: 0; }
.timeline { padding: 60px 0; }
.timeline h2 { font-size: 1.75rem; font-weight: 700; color: var(--text); margin-bottom: 2rem; }
.timeline-item { display: flex; gap: 20px; margin-bottom: 24px; }
.timeline-dot { width: 16px; height: 16px; background: var(--primary); border-radius: 50%; margin-top: 6px; flex-shrink: 0; }
.timeline-content { flex: 1; }
.timeline-content h3 { font-size: 1.05rem; font-weight: 600; color: var(--text); margin-bottom: 6px; }
.timeline-content p { font-size: 0.9rem; color: #155e75; line-height: 1.6; margin: 0; }
.team-section { padding: 60px 0; background: var(--light-bg); }
.team-section h2 { font-size: 1.75rem; font-weight: 700; color: var(--text); margin-bottom: 2rem; }
.team-card { text-align: center; padding: 24px 16px; background: var(--white); border: 1px solid var(--border-color); border-radius: 12px; transition: transform 0.3s ease; }
.team-card:hover { transform: translateY(-4px); }
.team-avatar { width: 72px; height: 72px; background: var(--primary); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; font-weight: 700; color: #fff; margin: 0 auto 12px; }
.team-card h3 { font-size: 1rem; font-weight: 600; color: var(--text); margin-bottom: 4px; }
.team-card p { font-size: 0.85rem; color: #155e75; margin: 0; }
.cta-box { background: var(--primary); border-radius: 16px; padding: 40px; text-align: center; color: #fff; }
.cta-box h2 { font-size: 1.5rem; font-weight: 700; margin-bottom: 12px; }
.cta-box p { font-size: 1rem; opacity: 0.9; margin-bottom: 24px; }
.btn-light-custom { background: #fff; color: var(--primary); border: none; padding: 12px 32px; border-radius: 8px; font-weight: 600; text-decoration: none; display: inline-block; transition: opacity 0.3s ease; }
.btn-light-custom:hover { opacity: 0.9; color: var(--primary); }

/* --- 子页面追加 --- */
/* 本页专属小范围补充样式（自动合并进站点 CSS） */
        .subscribe-hero {
            background: linear-gradient(135deg, rgba(8,145,178,.08) 0%, rgba(14,165,233,.05) 50%, rgba(236,254,255,.5) 100%);
            border-bottom: 1px solid var(--border-color);
        }
.price-card {
            background: var(--white);
            border: 2px solid var(--border-color);
            border-radius: 16px;
            padding: 2rem 1.8rem;
            transition: all .3s ease;
            height: 100%;
            position: relative;
        }
.price-card:hover {
            border-color: var(--primary);
            box-shadow: 0 8px 30px rgba(8,145,178,.12);
            transform: translateY(-4px);
        }
.price-card.highlight {
            border-color: var(--primary);
            background: var(--light-bg);
            box-shadow: 0 8px 30px rgba(8,145,178,.15);
        }
.price-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: var(--white);
            padding: 4px 18px;
            border-radius: 20px;
            font-size: .85rem;
            font-weight: 600;
            white-space: nowrap;
        }
.price-card .price {
            font-size: 3rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            margin-bottom: .3rem;
        }
.price-card .price-period {
            font-size: .9rem;
            color: var(--text);
            opacity: .7;
        }
.price-card .feature-list {
            list-style: none;
            padding: 0;
            margin: 1.5rem 0 0;
        }
.price-card .feature-list li {
            padding: .55rem 0;
            font-size: .95rem;
            color: var(--text);
            border-bottom: 1px dashed var(--border-color);
            display: flex;
            align-items: center;
            gap: .5rem;
        }
.price-card .feature-list li:last-child { border-bottom: none; }
.price-card .feature-list li i {
            color: var(--primary);
            font-size: .8rem;
            width: 20px;
            text-align: center;
        }
.subscribe-btn {
            display: inline-block;
            background: var(--primary);
            color: var(--white) !important;
            padding: .7rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all .3s;
            margin-top: 1.5rem;
            border: none;
            width: 100%;
            text-align: center;
        }
.subscribe-btn:hover {
            background: var(--accent);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(8,145,178,.3);
        }
.subscribe-btn.outline {
            background: transparent;
            color: var(--primary) !important;
            border: 2px solid var(--primary);
        }
.subscribe-btn.outline:hover {
            background: var(--primary);
            color: var(--white) !important;
        }
.perk-item {
            text-align: center;
            padding: 1.5rem 1rem;
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            transition: all .3s;
            height: 100%;
        }
.perk-item:hover {
            border-color: var(--primary);
            box-shadow: 0 4px 20px rgba(8,145,178,.1);
        }
.perk-item .perk-icon {
            font-size: 2rem;
            color: var(--primary);
            margin-bottom: .8rem;
            display: inline-block;
        }
.perk-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: .4rem;
        }
.perk-item p {
            font-size: .85rem;
            color: var(--text);
            opacity: .75;
            margin-bottom: 0;
            line-height: 1.5;
        }
.faq-box {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 1.8rem;
            margin-bottom: 1rem;
        }
.faq-box h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: .5rem;
            display: flex;
            align-items: center;
            gap: .5rem;
        }
.faq-box h4 i {
            font-size: .8rem;
            color: var(--primary);
        }
.faq-box p {
            font-size: .9rem;
            color: var(--text);
            line-height: 1.6;
            margin-bottom: 0;
            opacity: .85;
        }
.price-card { margin-bottom: 1.5rem; }

/* --- 子页面追加 --- */
.disclaimer-hero {
            background: linear-gradient(135deg, #ecfeff 0%, #cffafe 50%, #a5f3fc 100%);
            padding: 100px 0 60px;
            border-bottom: 2px solid var(--border-color);
        }
.disclaimer-hero h1 {
            color: var(--text);
            font-weight: 800;
            font-size: 2.5rem;
            position: relative;
            display: inline-block;
        }
.disclaimer-hero h1::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--primary);
            border-radius: 2px;
        }
.disclaimer-hero p {
            color: var(--text);
            opacity: .75;
            font-size: 1.1rem;
            margin-top: 20px;
            max-width: 720px;
        }
.legal-section {
            padding: 70px 0;
        }
.legal-section:nth-child(even) {
            background: var(--light-bg);
        }
.legal-card {
            background: var(--white);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 35px 40px;
            margin-bottom: 30px;
            box-shadow: 0 4px 20px rgba(8, 145, 178, .08);
            transition: transform .3s ease, box-shadow .3s ease;
        }
.legal-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 30px rgba(8, 145, 178, .15);
        }
.legal-card h2 {
            color: var(--primary);
            font-weight: 700;
            font-size: 1.4rem;
            margin-bottom: 18px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-color);
            position: relative;
        }
.legal-card h2 i {
            margin-right: 10px;
            color: var(--accent);
        }
.legal-card p, .legal-card li {
            color: var(--text);
            line-height: 1.8;
            font-size: .95rem;
        }
.legal-card ul {
            padding-left: 20px;
            margin-bottom: 10px;
        }
.legal-card li {
            margin-bottom: 8px;
            position: relative;
            padding-left: 6px;
        }
.legal-card li::marker {
            color: var(--primary);
        }
.notice-box {
            background: #f0fdfa;
            border-left: 4px solid var(--primary);
            padding: 20px 25px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
        }
.notice-box p {
            margin: 0;
            font-style: italic;
        }
.contact-note {
            background: var(--white);
            border: 2px dashed var(--border-color);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
        }
.contact-note h3 {
            color: var(--primary);
            font-weight: 700;
            margin-bottom: 15px;
        }
.contact-note p {
            color: var(--text);
            margin-bottom: 20px;
        }
.contact-note .btn {
            background: var(--primary);
            color: #fff;
            border: none;
            padding: 10px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: all .3s ease;
        }
.contact-note .btn:hover {
            background: var(--accent);
            transform: scale(1.05);
        }
.disclaimer-hero {
                padding: 70px 0 40px;
            }
.disclaimer-hero h1 {
                font-size: 2rem;
            }
.legal-card {
                padding: 25px 20px;
            }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#083344 !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#083344 !important; }