:root{
  --primary:#2563eb;
  --accent:#06b6d4;
  --bg:#f8fafc;
  --text:#0f172a;
  --light:#ffffff;
  --muted:#64748b;
  --border:#e2e8f0;
  --shadow:0 8px 30px rgba(37,99,235,0.08);
  --shadow-heavy:0 12px 40px rgba(37,99,235,0.14);
  --grad-primary:linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
}
*{margin:0;padding:0;box-sizing:border-box;}
body{
  background:var(--bg);
  color:var(--text);
  font-family:'Inter','PingFang SC','Microsoft YaHei',sans-serif;
  line-height:1.75;
  overflow-x:hidden;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.02'/%3E%3C/svg%3E");
}
h1,h2,h3,h4,h5{
  font-family:'Noto Serif SC','Source Han Serif SC','Songti SC',serif;
  font-weight:700;
  line-height:1.4;
}
a{text-decoration:none;color:inherit;transition:all 0.3s;}
.btn-custom{
  background:var(--grad-primary);
  color:#fff;
  border:none;
  padding:14px 34px;
  border-radius:50px;
  font-weight:600;
  font-size:1.05rem;
  position:relative;
  overflow:hidden;
  display:inline-block;
  box-shadow:0 4px 15px rgba(37,99,235,0.3);
  transition:all 0.4s;
}
.btn-custom::after{
  content:'';
  position:absolute;
  top:0;left:-100%;
  width:100%;height:100%;
  background:linear-gradient(120deg, transparent, rgba(255,255,255,0.4), transparent);
  transition:left 0.5s;
}
.btn-custom:hover{
  transform:translateY(-3px);
  box-shadow:0 8px 25px rgba(37,99,235,0.4);
  color:#fff;
}
.btn-custom:hover::after{left:100%;}
.navbar{
  background:rgba(255,255,255,0.9);
  backdrop-filter:blur(12px);
  box-shadow:0 2px 20px rgba(15,23,42,0.08);
  padding:14px 0;
  border-bottom:1px solid var(--border);
}
.navbar-brand{
  font-family:'Noto Serif SC',serif;
  font-weight:800;
  font-size:1.45rem;
  color:var(--primary);
}
.navbar-brand i{color:var(--accent);margin-right:8px;}
.nav-link{
  font-weight:500;
  color:var(--text);
  margin:0 10px;
  padding:6px 14px !important;
  border-radius:30px;
  font-size:0.95rem;
}
.nav-link:hover{
  background:rgba(37,99,235,0.08);
  color:var(--primary);
}
.hero{
  padding:80px 0 60px;
  background:radial-gradient(ellipse at top, rgba(6,182,212,0.08), transparent 60%);
}
.stat-number{
  font-family:'Noto Serif SC',serif;
  font-size:3.8rem;
  font-weight:900;
  background:var(--grad-primary);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  line-height:1.1;
}
.stat-label{color:var(--muted);font-size:0.95rem;letter-spacing:2px;}
.hero-badge{
  display:inline-block;
  background:rgba(6,182,212,0.1);
  color:var(--accent);
  border:1px solid rgba(6,182,212,0.3);
  border-radius:30px;
  padding:4px 18px;
  font-size:0.85rem;
  font-weight:600;
  margin-bottom:16px;
  letter-spacing:1px;
}
.section-title{
  font-size:2rem;
  margin-bottom:40px;
  position:relative;
  display:inline-block;
}
.section-title::after{
  content:'';
  position:absolute;
  bottom:-8px;left:0;
  width:60%;height:4px;
  background:var(--grad-primary);
  border-radius:4px;
}
.bento-grid{
  display:grid;
  grid-template-columns:repeat(4, 1fr);
  grid-auto-rows:auto;
  gap:24px;
  margin-top:40px;
}
.bento-item{
  background:var(--light);
  border-radius:20px;
  padding:32px 28px;
  box-shadow:var(--shadow);
  border:1px solid rgba(255,255,255,0.8);
  transition:all 0.4s;
  position:relative;
  overflow:hidden;
}
.bento-item:hover{
  transform:translateY(-6px);
  box-shadow:var(--shadow-heavy);
}
.bento-item::before{
  content:'';
  position:absolute;
  top:0;left:0;
  width:100%;height:4px;
  background:var(--grad-primary);
  opacity:0;
  transition:opacity 0.3s;
}
.bento-item:hover::before{opacity:1;}
.bento-large{grid-column:span 2;grid-row:span 2;}
.bento-wide{grid-column:span 2;}
.bento-tall{grid-row:span 2;}
.bento-icon{
  font-size:2rem;
  color:var(--primary);
  margin-bottom:16px;
  display:inline-block;
  padding:12px;
  background:rgba(37,99,235,0.08);
  border-radius:14px;
  border:1px solid rgba(37,99,235,0.15);
}
.long-intro{
  padding:70px 0;
}
.intro-list{
  counter-reset:intro-item;
  list-style:none;
  padding:0;
}
.intro-list li{
  counter-increment:intro-item;
  position:relative;
  padding:14px 0 14px 60px;
  margin-bottom:8px;
  font-size:1.02rem;
  color:var(--text);
  border-bottom:1px dashed var(--border);
}
.intro-list li::before{
  content:counter(intro-item, decimal-leading-zero);
  position:absolute;
  left:0;top:12px;
  width:40px;height:40px;
  background:var(--grad-primary);
  color:#fff;
  border-radius:10px;
  display:flex;align-items:center;justify-content:center;
  font-weight:700;
  font-size:0.9rem;
  box-shadow:0 4px 12px rgba(37,99,235,0.3);
}
.compare-section{
  padding:70px 0;
  background:#fff;
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.table-custom{
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow);
  border:none;
}
.table-custom thead th{
  background:var(--grad-primary);
  color:#fff;
  border:none;
  font-weight:600;
  padding:18px 16px;
  font-size:1rem;
  letter-spacing:0.5px;
}
.table-custom tbody td{
  padding:18px 16px;
  border-bottom:1px solid var(--border);
  vertical-align:middle;
  font-size:0.97rem;
}
.table-custom tbody tr:last-child td{border-bottom:none;}
.table-custom tbody tr:hover{background:rgba(37,99,235,0.03);}
.table-custom .fa-check-circle{color:var(--primary);font-size:1.2rem;}
.table-custom .fa-times-circle{color:#94a3b8;font-size:1.2rem;}
.table-custom .fa-minus-circle{color:#cbd5e1;font-size:1.2rem;}
.table-custom .highlight-col{
  background:rgba(6,182,212,0.05);
  border-left:3px solid var(--accent);
  border-right:3px solid var(--accent);
}
.table-custom .highlight-col:first-child{border-left:none;}
.table-custom .highlight-col:last-child{border-right:none;}
.faq-section{
  padding:70px 0;
}
.accordion-item{
  border:1px solid var(--border);
  border-radius:14px !important;
  margin-bottom:14px;
  overflow:hidden;
  box-shadow:0 2px 10px rgba(15,23,42,0.04);
}
.accordion-button{
  font-family:'Noto Serif SC',serif;
  font-weight:600;
  font-size:1.05rem;
  padding:20px 24px;
  background:#fff;
}
.accordion-button:not(.collapsed){
  background:rgba(37,99,235,0.04);
  color:var(--primary);
  box-shadow:none;
}
.accordion-body{
  padding:20px 24px;
  color:var(--muted);
  font-size:0.98rem;
}
.feature-section{
  padding:70px 0;
  background:#fff;
  border-top:1px solid var(--border);
}
.feature-card{
  background:var(--bg);
  border-radius:16px;
  padding:30px 24px;
  text-align:center;
  border:1px solid var(--border);
  transition:all 0.4s;
  height:100%;
}
.feature-card:hover{
  transform:translateY(-8px);
  box-shadow:var(--shadow-heavy);
  border-color:transparent;
}
.feature-card .icon-circle{
  width:60px;height:60px;
  background:var(--grad-primary);
  border-radius:16px;
  display:inline-flex;align-items:center;justify-content:center;
  color:#fff;font-size:1.5rem;
  margin-bottom:16px;
  box-shadow:0 6px 18px rgba(37,99,235,0.3);
}
.feature-card h5{font-size:1.1rem;margin-bottom:10px;}
.feature-card p{color:var(--muted);font-size:0.9rem;margin-bottom:0;}
.cta-section{
  padding:80px 0;
  background:var(--grad-primary);
  color:#fff;
  text-align:center;
  position:relative;
  overflow:hidden;
}
.cta-section::before{
  content:'';
  position:absolute;
  width:400px;height:400px;
  background:rgba(255,255,255,0.05);
  border-radius:50%;
  top:-200px;right:-100px;
}
.cta-section::after{
  content:'';
  position:absolute;
  width:300px;height:300px;
  background:rgba(255,255,255,0.04);
  border-radius:50%;
  bottom:-150px;left:-80px;
}
.cta-section h2{font-size:2.2rem;margin-bottom:16px;position:relative;z-index:1;}
.cta-section p{font-size:1.1rem;opacity:0.9;margin-bottom:30px;position:relative;z-index:1;}
.cta-btn{
  background:#fff;
  color:var(--primary);
  padding:14px 40px;
  border-radius:50px;
  font-weight:700;
  display:inline-block;
  font-size:1.05rem;
  box-shadow:0 8px 25px rgba(0,0,0,0.15);
  position:relative;
  z-index:1;
  transition:all 0.4s;
}
.cta-btn:hover{
  transform:translateY(-4px) scale(1.02);
  box-shadow:0 12px 35px rgba(0,0,0,0.2);
  color:var(--accent);
}
.friend-links{
  padding:40px 0;
  background:var(--bg);
  border-top:1px solid var(--border);
}
.friend-links .link-title{
  font-size:1.1rem;
  font-weight:600;
  margin-bottom:16px;
  color:var(--text);
  font-family:'Noto Serif SC',serif;
}
.footer{
  background:#0f172a;
  color:#94a3b8;
  padding:40px 0 20px;
}
.footer .footer-brand{
  font-family:'Noto Serif SC',serif;
  font-size:1.3rem;
  color:#fff;
  margin-bottom:8px;
  font-weight:700;
}
.footer a{color:#94a3b8;}
.footer a:hover{color:var(--accent);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.1);
  padding-top:20px;
  margin-top:30px;
  font-size:0.9rem;
}
.fade-up{
  opacity:0;
  transform:translateY(30px);
  transition:all 0.7s ease;
}
.fade-up.visible{
  opacity:1;
  transform:translateY(0);
}
@media (max-width: 768px){
  .bento-grid{grid-template-columns:1fr;}
  .bento-large,.bento-wide,.bento-tall{grid-column:span 1;grid-row:span 1;}
  .hero{padding:50px 0;}
  .stat-number{font-size:2.8rem;}
  .navbar-collapse{padding:14px 0;}
  .nav-link{margin:5px 0;}
}

/* --- 子页面追加 --- */
/* 本页专属补充样式 */
        .about-hero {
            padding: 80px 0 60px;
            background: linear-gradient(180deg, var(--bg) 0%, var(--light) 100%);
        }
.about-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(37,99,235,0.08);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.9rem;
            font-weight: 500;
            margin-bottom: 20px;
        }
.about-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text);
            line-height: 1.2;
            margin-bottom: 20px;
        }
.about-hero h1 .gradient-text {
            background: var(--grad-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
.about-hero .lead {
            font-size: 1.15rem;
            color: var(--muted);
            max-width: 720px;
            margin: 0 auto;
            line-height: 1.8;
        }
.about-section {
            padding: 60px 0;
        }
.about-section .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }
.about-section .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 50px;
            height: 4px;
            background: var(--grad-primary);
            border-radius: 2px;
        }
.about-section .content-text {
            font-size: 1.05rem;
            line-height: 1.9;
            color: var(--text);
            opacity: 0.9;
        }
.about-section .content-text p {
            margin-bottom: 16px;
        }
.about-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
            margin-top: 40px;
        }
.about-grid-item {
            background: var(--light);
            border-radius: 16px;
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.about-grid-item:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-heavy);
        }
.about-grid-item .icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(37,99,235,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 16px;
        }
.about-grid-item h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 10px;
        }
.about-grid-item p {
            font-size: 0.95rem;
            color: var(--muted);
            line-height: 1.7;
            margin: 0;
        }
.timeline-section {
            padding: 60px 0;
            background: var(--light);
        }
.timeline {
            position: relative;
            max-width: 800px;
            margin: 40px auto 0;
            padding-left: 40px;
        }
.timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            opacity: 0.3;
        }
.timeline-item {
            position: relative;
            margin-bottom: 36px;
        }
.timeline-item::before {
            content: '';
            position: absolute;
            left: -36px;
            top: 4px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--light);
            border: 3px solid var(--primary);
            box-shadow: 0 0 0 4px rgba(37,99,235,0.1);
        }
.timeline-item .year {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
        }
.timeline-item h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
.timeline-item p {
            font-size: 0.95rem;
            color: var(--muted);
            line-height: 1.7;
            margin: 0;
        }
.about-values {
            padding: 60px 0;
        }
.values-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }
.value-card {
            text-align: center;
            padding: 30px 20px;
            background: var(--light);
            border-radius: 16px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: transform 0.3s ease;
        }
.value-card:hover {
            transform: translateY(-4px);
        }
.value-card .icon {
            font-size: 2rem;
            margin-bottom: 12px;
            display: block;
        }
.value-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }
.value-card p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.6;
            margin: 0;
        }
.about-footer-cta {
            padding: 60px 0;
            text-align: center;
            background: var(--bg);
        }
.about-footer-cta h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 16px;
        }
.about-footer-cta p {
            color: var(--muted);
            max-width: 600px;
            margin: 0 auto 24px;
            font-size: 1.05rem;
        }
.about-hero h1 {
                font-size: 2rem;
            }
.about-section .section-title {
                font-size: 1.6rem;
            }
.about-grid {
                grid-template-columns: 1fr;
            }
.values-grid {
                grid-template-columns: 1fr 1fr;
            }
.timeline {
                padding-left: 30px;
            }
.timeline-item::before {
                left: -26px;
            }
.values-grid {
                grid-template-columns: 1fr;
            }

/* --- 子页面追加 --- */
/* 本页专属样式 */
        .privacy-section {
            padding: 4rem 0;
        }
.privacy-section .section-title {
            margin-bottom: 2.5rem;
        }
.privacy-card {
            background: var(--light);
            border-radius: 16px;
            padding: 2rem;
            margin-bottom: 1.5rem;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
.privacy-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-heavy);
        }
.privacy-card h3 {
            color: var(--primary);
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
.privacy-card h3 i {
            color: var(--accent);
            font-size: 1.25rem;
        }
.privacy-card p, .privacy-card li {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
        }
.privacy-card ul, .privacy-card ol {
            padding-left: 1.25rem;
            margin-top: 0.75rem;
        }
.privacy-card li {
            margin-bottom: 0.5rem;
        }
.privacy-card .highlight {
            color: var(--primary);
            font-weight: 600;
        }
.privacy-update {
            background: var(--grad-primary);
            color: #fff;
            border-radius: 12px;
            padding: 1.5rem;
            margin-top: 2rem;
            text-align: center;
        }
.privacy-update p {
            margin-bottom: 0;
            font-size: 0.95rem;
        }
.privacy-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.1);
            color: var(--primary);
            padding: 0.35rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 1.5rem;
        }
.privacy-section {
                padding: 2.5rem 0;
            }
.privacy-card {
                padding: 1.5rem;
            }

/* --- 子页面追加 --- */
.terms-hero {
            background: var(--grad-primary);
            color: #fff;
            padding: 4rem 0 3rem;
            text-align: center;
        }
.terms-hero h1 {
            font-weight: 800;
            font-size: 2.2rem;
            margin-bottom: 0.8rem;
        }
.terms-hero p {
            opacity: 0.9;
            max-width: 720px;
            margin: 0 auto;
        }
.terms-section {
            padding: 2.5rem 0;
            border-bottom: 1px solid var(--border);
        }
.terms-section:last-child {
            border-bottom: none;
        }
.terms-section h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 1.2rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
.terms-section h2 i {
            font-size: 1.2rem;
            color: var(--accent);
        }
.terms-section h3 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text);
            margin-top: 1.5rem;
            margin-bottom: 0.6rem;
        }
.terms-section p, .terms-section li {
            color: var(--text);
            line-height: 1.8;
            font-size: 0.95rem;
        }
.terms-section ul, .terms-section ol {
            padding-left: 1.5rem;
            margin-bottom: 1rem;
        }
.terms-section li {
            margin-bottom: 0.5rem;
        }
.terms-section strong {
            color: var(--primary);
            font-weight: 600;
        }
.terms-badge {
            display: inline-block;
            background: var(--grad-primary);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 600;
            padding: 0.15rem 0.7rem;
            border-radius: 20px;
            margin-left: 0.5rem;
            vertical-align: middle;
        }
.terms-date {
            font-size: 0.85rem;
            color: var(--muted);
            margin-top: 1rem;
        }
.terms-summary {
            background: rgba(37,99,235,0.04);
            border-left: 4px solid var(--primary);
            padding: 1.2rem 1.5rem;
            border-radius: 0 8px 8px 0;
            margin: 1.5rem 0;
        }
.terms-summary p {
            margin-bottom: 0.3rem;
        }
.terms-summary p:last-child {
            margin-bottom: 0;
        }
.table-custom th, .table-custom td {
            padding: 0.8rem 1rem;
        }
.terms-hero h1 {
                font-size: 1.7rem;
            }
.terms-section {
                padding: 2rem 0;
            }

/* --- Bootstrap 组件配色适配(程序自动补,避免白底黑字) --- */
.table { color:#0f172a !important; border-color:rgba(0,0,0,.12) !important; --bs-table-bg:transparent !important; --bs-table-color:#0f172a !important; }
.accordion-header { background:transparent !important; }