:root{
  --primary:#2563eb;
  --accent:#06b6d4;
  --bg:#f8fafc;
  --text:#0f172a;
  --border:rgba(37,99,235,.15);
  --card-bg:#ffffff;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:'Noto Sans SC',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
  font-size:16px;
  overflow-x:hidden;
}
h1,h2,h3,h4,.font-serif{
  font-family:'Noto Serif SC',serif;
  font-weight:700;
}
/* 滚动进度条 */
.progress-bar-top{
  position:fixed;top:0;left:0;height:3px;width:0%;
  background:linear-gradient(90deg,var(--primary),var(--accent));
  z-index:9999;transition:width .1s linear;
}
/* 顶部导航 */
.navbar-banana{
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  padding:14px 0;
  position:sticky;top:0;z-index:1000;
}
.navbar-banana .navbar-brand{
  font-size:1.5rem;font-weight:900;
  color:var(--primary);
  display:flex;align-items:center;gap:8px;
}
.navbar-banana .navbar-brand i{color:var(--accent);font-size:1.3rem}
.navbar-banana .nav-link{
  color:var(--text);font-weight:500;
  margin:0 6px;padding:8px 14px !important;
  border-radius:8px;transition:all .3s;
  font-size:.95rem;
}
.navbar-banana .nav-link:hover{
  color:var(--primary);background:rgba(37,99,235,.06);
}
.navbar-toggler{border:2px solid var(--primary);color:var(--primary)}
.navbar-toggler:focus{box-shadow:none}
/* Hero 关键词标签云 */
.hero-tags{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:center;
  max-width:900px;margin:0 auto 60px;
}
.hero-tag{
  display:inline-block;padding:8px 20px;
  background:#fff;border:1.5px solid var(--border);
  border-radius:40px;font-size:.9rem;font-weight:500;
  color:var(--text);transition:all .3s ease;
  animation:tagFloat 6s ease-in-out infinite;
}
.hero-tag:nth-child(odd){animation-delay:0s}
.hero-tag:nth-child(even){animation-delay:2s}
.hero-tag:hover{
  border-color:var(--primary);color:var(--primary);
  transform:translateY(-3px);
}
@keyframes tagFloat{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-8px)}
}
/* 区块 */
.section-block{
  padding:80px 0;
  border-bottom:1px solid var(--border);
}
.section-title{
  font-size:2rem;
  margin-bottom:10px;
  position:relative;
  display:inline-block;
}
.section-title::after{
  content:'';position:absolute;bottom:-8px;left:0;
  width:60px;height:3px;background:linear-gradient(90deg,var(--primary),var(--accent));
}
.section-sub{
  color:#64748b;font-size:.95rem;margin-bottom:50px;
}
/* 几何色块背景 */
.geo-bg{position:relative}
.geo-bg::before,.geo-bg::after{
  content:'';position:absolute;z-index:-1;opacity:.15;
}
.geo-bg::before{
  width:300px;height:300px;border-radius:50%;
  background:var(--primary);top:10%;left:-100px;
  filter:blur(60px);
}
.geo-bg::after{
  width:200px;height:200px;background:var(--accent);
  bottom:10%;right:-80px;border-radius:30px;
  transform:rotate(45deg);
}
/* 时间线 */
.timeline{
  position:relative;max-width:800px;margin:0 auto;padding-left:30px;
}
.timeline::before{
  content:'';position:absolute;left:8px;top:0;width:2px;height:100%;
  background:linear-gradient(to bottom,var(--primary),var(--accent));
}
.timeline-item{
  position:relative;margin-bottom:50px;padding-left:20px;
  opacity:0;transform:translateY(30px);
  transition:all .6s ease;
}
.timeline-item.visible{opacity:1;transform:translateY(0)}
.timeline-item::before{
  content:'';position:absolute;left:-27px;top:5px;
  width:16px;height:16px;border-radius:50%;
  background:#fff;border:3px solid var(--primary);
}
.timeline-item h4{font-size:1.2rem;margin-bottom:8px;color:var(--primary)}
.timeline-item p{color:#475569;font-size:.95rem}
/* 对比表格 */
.compare-table{
  width:100%;border-collapse:collapse;background:#fff;
  border:1px solid var(--border);border-radius:12px;overflow:hidden;
  max-width:800px;margin:0 auto;
}
.compare-table th,.compare-table td{
  padding:18px 24px;text-align:left;border-bottom:1px solid var(--border);
}
.compare-table th{
  background:rgba(37,99,235,.04);font-weight:700;font-size:1rem;
}
.compare-table tr:last-child td{border-bottom:none}
.compare-table td i.fa-check{color:#10b981;margin-right:8px}
.compare-table td i.fa-xmark{color:#ef4444;margin-right:8px}
.compare-table tr:hover td{background:rgba(6,182,212,.03)}
/* FAQ */
.faq-item{
  max-width:800px;margin:0 auto 16px;
  background:#fff;border:1px solid var(--border);
  border-radius:12px;overflow:hidden;
  transition:border-color .3s;
}
.faq-item:hover{border-color:var(--primary)}
.faq-q{
  padding:22px 28px;font-weight:600;font-size:1.05rem;
  display:flex;justify-content:space-between;align-items:center;
  cursor:pointer;font-family:'Noto Sans SC',sans-serif;
}
.faq-q i{color:var(--primary);transition:transform .3s;font-size:.9rem}
.faq-item.active .faq-q i{transform:rotate(180deg)}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .4s ease;
  padding:0 28px;color:#475569;font-size:.95rem;
  line-height:1.8;
}
.faq-item.active .faq-a{max-height:500px;padding:0 28px 24px}
/* 特色卡片-标签页 */
.feature-tabs{
  display:flex;gap:8px;justify-content:center;flex-wrap:wrap;
  margin-bottom:50px;
}
.feature-tab-btn{
  padding:10px 24px;border-radius:40px;border:2px solid var(--border);
  background:#fff;font-weight:600;font-size:.9rem;
  transition:all .3s;cursor:pointer;color:var(--text);
}
.feature-tab-btn.active{
  background:var(--primary);border-color:var(--primary);color:#fff;
}
.feature-panel{
  display:none;max-width:800px;margin:0 auto;
  animation:fadeUp .5s ease;
}
.feature-panel.active{display:block}
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.feature-card{
  background:#fff;border:1px solid var(--border);border-radius:16px;
  padding:36px;text-align:center;
  transition:transform .3s ease,border-color .3s ease;
  height:100%;
}
.feature-card:hover{
  transform:scale(1.03);
  border-color:var(--primary);
  box-shadow:0 0 0 3px rgba(37,99,235,.05);
}
.feature-card i{
  font-size:2.5rem;color:var(--primary);margin-bottom:18px;
  background:rgba(37,99,235,.08);width:80px;height:80px;
  display:inline-flex;align-items:center;justify-content:center;
  border-radius:50%;
}
.feature-card h4{font-size:1.1rem;margin-bottom:12px}
.feature-card p{color:#64748b;font-size:.9rem;margin-bottom:0}
/* CTA 区块 */
.cta-section{
  padding:100px 0;text-align:center;
  background:linear-gradient(135deg,rgba(37,99,235,.03),rgba(6,182,212,.03));
}
.cta-section h2{font-size:2.5rem;margin-bottom:16px}
.cta-section p{color:#64748b;max-width:600px;margin:0 auto 40px}
.btn-banana{
  background:var(--primary);color:#fff;padding:14px 40px;
  border-radius:40px;font-weight:600;font-size:1rem;
  border:none;transition:all .3s;display:inline-block;
  text-decoration:none;
}
.btn-banana:hover{
  background:#1d4ed8;transform:translateY(-2px);
  box-shadow:0 8px 25px rgba(37,99,235,.25);
}
/* 友情链接 */
.friend-links{
  padding:50px 0 60px;
  border-top:1px solid var(--border);
  background:#fff;
}
.friend-links h5{
  font-size:1.1rem;margin-bottom:20px;color:var(--text);
  display:flex;align-items:center;gap:8px;
}
.friend-links h5 i{color:var(--primary)}
.friend-links .links-row{
  display:flex;flex-wrap:wrap;gap:8px 24px;
  font-size:.9rem;color:#64748b;
}
.friend-links a{color:#64748b;text-decoration:none;transition:color .3s}
.friend-links a:hover{color:var(--primary)}
/* 页脚 */
.footer-banana{
  padding:40px 0 30px;background:var(--text);color:#94a3b8;
}
.footer-banana .brand{
  font-size:1.3rem;font-weight:900;color:#fff;margin-bottom:10px;
  display:inline-flex;align-items:center;gap:8px;
}
.footer-banana .brand i{color:var(--accent)}
.footer-banana p{font-size:.85rem;margin-bottom:8px}
.footer-banana .footer-links a{
  color:#94a3b8;text-decoration:none;margin-right:20px;font-size:.9rem;
  transition:color .3s;
}
.footer-banana .footer-links a:hover{color:#fff}
/* 通用动画 */
.reveal{
  opacity:0;transform:translateY(30px);
  transition:opacity .7s ease,transform .7s ease;
}
.reveal.visible{opacity:1;transform:translateY(0)}
/* 长文 */
.long-text{
  max-width:800px;margin:0 auto;font-size:1.02rem;color:#334155;
  line-height:2;
}
.long-text p{margin-bottom:24px}
/* 时间线区块按钮 */
.tag-cloud-btn{
  font-size:1rem;padding:6px 14px;margin:4px;
  background:rgba(37,99,235,.06);border-radius:8px;
  border:1px solid var(--border);
  transition:all .3s;cursor:pointer;color:var(--text);
}
.tag-cloud-btn:hover{background:var(--primary);color:#fff}
/* 响应式 */
@media(max-width:768px){
  .section-block{padding:60px 0}
  .section-title{font-size:1.6rem}
  .cta-section h2{font-size:1.8rem}
  .hero-tags{gap:8px}
  .hero-tag{padding:6px 14px;font-size:.8rem}
  .timeline{padding-left:20px}
}

/* --- 子页面追加 --- */
/* 本页专属微调 - 补充站点样式表未覆盖的细节 */
        .about-hero {
            background: linear-gradient(135deg, rgba(37,99,235,.08) 0%, rgba(6,182,212,.12) 100%);
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 4rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
.about-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(6,182,212,.12) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
.about-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(37,99,235,.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
.about-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 1;
        }
.about-hero h1 .brand-highlight {
            background: linear-gradient(120deg, var(--primary), var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
.about-hero p {
            font-size: 1.15rem;
            color: rgba(15,23,42,.65);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.8;
            position: relative;
            z-index: 1;
        }
.about-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            background: rgba(37,99,235,.1);
            border: 1px solid var(--border);
            color: var(--primary);
            padding: .35rem 1rem;
            border-radius: 100px;
            font-size: .85rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
            position: relative;
            z-index: 1;
        }
.about-hero .hero-badge i {
            font-size: .8rem;
        }
/* 价值卡片 */
        .value-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 2rem 1.5rem;
            height: 100%;
            transition: transform .3s ease, box-shadow .3s ease;
            position: relative;
            overflow: hidden;
        }
.value-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 40px rgba(37,99,235,.08);
        }
.value-card .icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 1.2rem;
            background: linear-gradient(135deg, rgba(37,99,235,.12), rgba(6,182,212,.12));
            border: 1px solid var(--border);
        }
.value-card .icon-wrap i {
            color: var(--primary);
        }
.value-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: .8rem;
        }
.value-card p {
            color: rgba(15,23,42,.6);
            font-size: .95rem;
            line-height: 1.75;
            margin-bottom: 0;
        }
/* 时间线增强 */
        .timeline {
            position: relative;
            padding-left: 2rem;
        }
.timeline-item .timeline-date {
            font-size: .8rem;
            font-weight: 600;
            color: var(--accent);
            text-transform: uppercase;
            letter-spacing: .05em;
            margin-bottom: .25rem;
        }
.timeline-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: .5rem;
        }
/* 数据区块 */
        .stat-block {
            background: linear-gradient(135deg, var(--primary), var(--accent));
            border-radius: 20px;
            padding: 3rem 2rem;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
.stat-block::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255,255,255,.1) 0%, transparent 70%);
            border-radius: 50%;
        }
.stat-block .stat-item {
            text-align: center;
            position: relative;
            z-index: 1;
            padding: 1rem;
        }
.stat-block .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: .25rem;
            letter-spacing: -0.02em;
        }
.stat-block .stat-label {
            font-size: .9rem;
            opacity: .85;
            font-weight: 500;
        }
/* 创始人卡片 */
        .founder-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 2.5rem 2rem;
            text-align: center;
            position: relative;
            overflow: hidden;
            transition: transform .3s ease;
        }
.founder-card:hover {
            transform: translateY(-4px);
        }
.founder-card .founder-avatar {
            width: 88px;
            height: 88px;
            border-radius: 50%;
            margin: 0 auto 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            background: linear-gradient(135deg, rgba(37,99,235,.15), rgba(6,182,212,.15));
            border: 2px solid var(--border);
        }
.founder-card .founder-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: .25rem;
        }
.founder-card .founder-role {
            font-size: .85rem;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 1rem;
        }
.founder-card .founder-quote {
            font-size: .95rem;
            color: rgba(15,23,42,.65);
            line-height: 1.7;
            font-style: italic;
        }
/* 使命区块 */
        .mission-block {
            background: linear-gradient(135deg, rgba(37,99,235,.05), rgba(6,182,212,.05));
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 2.5rem;
            margin-top: 2rem;
        }
.mission-block h3 {
            color: var(--text);
            font-weight: 700;
            font-size: 1.25rem;
            margin-bottom: 1rem;
        }
.mission-block p {
            color: rgba(15,23,42,.7);
            line-height: 1.8;
            margin-bottom: 0;
        }
/* 团队网格 */
        .team-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }
.team-member {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: 16px;
            padding: 1.5rem;
            text-align: center;
            transition: all .3s ease;
        }
.team-member:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 24px rgba(37,99,235,.08);
        }
.team-member .member-emoji {
            font-size: 2.2rem;
            margin-bottom: .8rem;
            display: block;
        }
.team-member .member-name {
            font-weight: 700;
            color: var(--text);
            font-size: 1rem;
            margin-bottom: .2rem;
        }
.team-member .member-role {
            font-size: .8rem;
            color: rgba(15,23,42,.55);
        }
.about-hero {
                padding: 3rem 1.5rem;
            }
.about-hero h1 {
                font-size: 1.8rem;
            }
.about-hero p {
                font-size: 1rem;
            }
.stat-block .stat-number {
                font-size: 1.8rem;
            }
.founder-card {
                padding: 1.5rem;
            }

/* --- 子页面追加 --- */
.terms-section { max-width: 900px; margin: 0 auto; }
.terms-section h2 { margin-top: 2.5rem; margin-bottom: 1rem; }
.terms-section p { line-height: 1.9; margin-bottom: 1.2rem; }
.terms-list li { margin-bottom: .8rem; line-height: 1.8; }
.update-tag { display: inline-block; background: rgba(37,99,235,.1); color: var(--primary); padding: .3rem 1rem; border-radius: 20px; font-size: .85rem; border: 1px solid var(--border); margin-bottom: 2rem; }

/* --- 子页面追加 --- */
/* 补充隐私页特有排版，不影响全局风格 */
    .privacy-hero {
      background: linear-gradient(135deg, rgba(37,99,235,.06) 0%, rgba(6,182,212,.05) 100%);
      border-bottom: 1px solid var(--border);
      padding: 4rem 0 2.5rem;
    }
.privacy-hero h1 {
      font-weight: 800;
      letter-spacing: -0.01em;
    }
.privacy-hero .lead {
      color: #334155;
      font-weight: 400;
    }
.policy-block {
      padding: 2.2rem 0 1rem;
    }
.policy-card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: 24px;
      padding: 2rem 2rem 1.8rem;
      margin-bottom: 2rem;
      box-shadow: 0 8px 24px rgba(37,99,235,.05);
    }
.policy-card h2 {
      font-size: 1.55rem;
      font-weight: 700;
      margin-bottom: 1.25rem;
      color: var(--text);
      display: flex;
      align-items: center;
      gap: .6rem;
    }
.policy-card h2 i {
      color: var(--primary);
      font-size: 1.4rem;
      width: 1.8rem;
    }
.policy-card p, .policy-card li {
      color: #1e293b;
      line-height: 1.8;
      font-size: .98rem;
    }
.policy-card ul {
      padding-left: 1.2rem;
      list-style: none;
    }
.policy-card ul li {
      position: relative;
      margin-bottom: .55rem;
      padding-left: 1.6rem;
    }
.policy-card ul li::before {
      content: "🍌";
      position: absolute;
      left: 0;
      top: 0;
      font-size: 1rem;
      opacity: .8;
    }
.policy-card .small-note {
      font-size: .9rem;
      color: #475569;
      background: rgba(37,99,235,.03);
      border-radius: 16px;
      padding: 1rem 1.3rem;
      border-left: 3px solid var(--primary);
      margin-top: 1.2rem;
    }
.updated-tag {
      display: inline-block;
      background: var(--primary);
      color: #fff;
      padding: .2rem 1rem;
      border-radius: 40px;
      font-size: .8rem;
      font-weight: 500;
      letter-spacing: .02em;
      margin-left: .5rem;
      vertical-align: middle;
    }