:root{
  --brand:#5b3df5;
  --brand-2:#8a5cff;
  --accent:#ff6b9d;
  --bg:#ffffff;
  --bg-soft:#f6f5ff;
  --text:#1f1d2b;
  --muted:#5f5c73;
  --line:#e8e6f5;
  --shadow:0 12px 32px rgba(91,61,245,.10);
  --radius:16px;
}
html[data-theme="dark"]{
  --bg:#14121f;
  --bg-soft:#1c1930;
  --text:#eceaf7;
  --muted:#a8a4c2;
  --line:#2d2946;
  --shadow:0 12px 32px rgba(0,0,0,.45);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.8;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img,svg{display:block;max-width:100%}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(1160px,92%);margin:0 auto}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--brand);color:#fff;padding:10px 16px;z-index:999}
.skip-link:focus{left:12px;top:12px}
header.site-header{
  position:sticky;top:0;z-index:100;
  background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .3s;
}
header.site-header.scrolled{box-shadow:var(--shadow)}
.nav-wrap{display:flex;align-items:center;gap:20px;padding:14px 0}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px;color:var(--text);white-space:nowrap}
.logo:hover{text-decoration:none}
.logo svg{width:36px;height:36px}
.nav-links{display:flex;gap:6px;flex-wrap:wrap;margin-left:auto}
.nav-links a{padding:8px 12px;border-radius:10px;color:var(--muted);font-size:15px;font-weight:500}
.nav-links a:hover{background:var(--bg-soft);color:var(--brand);text-decoration:none}
.nav-tools{display:flex;align-items:center;gap:8px}
.icon-btn{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg);color:var(--text);cursor:pointer;display:grid;place-items:center;
  transition:.2s;
}
.icon-btn:hover{border-color:var(--brand);color:var(--brand)}
.icon-btn svg{width:20px;height:20px}
.menu-toggle{display:none}
.search-box{position:relative;display:flex;align-items:center}
.search-box input{
  width:200px;padding:9px 12px 9px 36px;border-radius:12px;border:1px solid var(--line);
  background:var(--bg-soft);color:var(--text);font-size:14px;outline:none;transition:.25s;
}
.search-box input:focus{border-color:var(--brand);width:240px;background:var(--bg)}
.search-box svg{position:absolute;left:11px;width:16px;height:16px;color:var(--muted)}
.hero{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#5b3df5 0%,#8a5cff 50%,#ff6b9d 100%);
  color:#fff;padding:64px 0 72px;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 80% 20%,rgba(255,255,255,.22),transparent 55%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(28px,4vw,44px);line-height:1.25;font-weight:900;letter-spacing:.5px}
.hero h1 em{font-style:normal;color:#ffe36b}
.hero .lead{margin-top:18px;font-size:17px;opacity:.95;max-width:620px}
.hero-actions{display:flex;gap:14px;margin-top:26px;flex-wrap:wrap}
.btn{
  display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:14px;
  font-weight:700;font-size:15px;border:none;cursor:pointer;transition:.2s;
}
.btn-primary{background:#fff;color:#5b3df5}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.2);text-decoration:none}
.btn-ghost{background:rgba(255,255,255,.16);color:#fff;border:1px solid rgba(255,255,255,.5)}
.btn-ghost:hover{background:rgba(255,255,255,.26);text-decoration:none}
.hero-stats{display:flex;gap:28px;margin-top:34px;flex-wrap:wrap}
.hero-stats div{min-width:96px}
.hero-stats strong{display:block;font-size:26px;font-weight:900;color:#ffe36b}
.hero-stats span{font-size:13px;opacity:.9}
.carousel{
  position:relative;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
  border-radius:22px;padding:22px;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);min-height:280px;
}
.slide{display:none;animation:fade .6s}
.slide.active{display:block}
@keyframes fade{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
.slide h3{font-size:19px;margin-bottom:8px;color:#fff}
.slide p{font-size:14px;opacity:.92;margin-bottom:14px}
.slide-art{height:120px;border-radius:14px;background:linear-gradient(120deg,#ffe36b,#ff6b9d,#8a5cff);display:grid;place-items:center;color:#1f1d2b;font-weight:800}
.dots{display:flex;gap:8px;margin-top:16px}
.dot{width:9px;height:9px;border-radius:50%;background:rgba(255,255,255,.4);border:none;cursor:pointer;transition:.25s}
.dot.active{background:#ffe36b;width:24px;border-radius:5px}
section{padding:64px 0}
.section-head{text-align:center;max-width:760px;margin:0 auto 42px}
.section-head h2{font-size:clamp(24px,3vw,34px);font-weight:900;letter-spacing:.3px}
.section-head p{color:var(--muted);margin-top:12px;font-size:16px}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);
  padding:26px;transition:.25s;box-shadow:0 2px 8px rgba(0,0,0,.02);
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--brand) 35%,var(--line))}
.card h3{font-size:18px;margin-bottom:10px}
.card h4{font-size:15px;margin:14px 0 6px;color:var(--brand)}
.card p{color:var(--muted);font-size:15px}
.icon-circle{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;margin-bottom:16px;
  background:linear-gradient(135deg,rgba(91,61,245,.14),rgba(255,107,157,.14));color:var(--brand);
}
.icon-circle svg{width:24px;height:24px}
.soft-bg{background:var(--bg-soft)}
.article-list{display:grid;gap:18px;grid-template-columns:repeat(2,1fr)}
.article-item{
  background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:22px;transition:.25s;
}
.article-item:hover{border-color:var(--brand);box-shadow:var(--shadow)}
.article-item .meta{font-size:13px;color:var(--muted);display:flex;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.article-item h3{font-size:17px;margin-bottom:8px;line-height:1.5}
.article-item p{font-size:14.5px;color:var(--muted)}
.article-item .more{display:inline-block;margin-top:12px;font-size:14px;font-weight:600}
.faq-list{max-width:900px;margin:0 auto;display:grid;gap:12px}
.faq-item{border:1px solid var(--line);border-radius:14px;background:var(--bg);overflow:hidden;transition:border-color .25s,box-shadow .25s}
.faq-item.open{border-color:var(--brand);box-shadow:var(--shadow)}
.faq-q{
  width:100%;text-align:left;padding:18px 22px;background:none;border:none;cursor:pointer;
  font-size:16px;font-weight:700;color:var(--text);display:flex;justify-content:space-between;gap:14px;align-items:center;
}
.faq-q svg{width:20px;height:20px;flex-shrink:0;transition:transform .3s;color:var(--brand)}
.faq-item.open .faq-q svg{transform:rotate(180deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;padding:0 22px}
.faq-a p{padding-bottom:18px;color:var(--muted);font-size:15px}
.howto-steps{display:grid;gap:16px;counter-reset:step}
.howto-step{
  display:grid;grid-template-columns:52px 1fr;gap:18px;align-items:start;
  background:var(--bg);border:1px solid var(--line);border-radius:14px;padding:20px 22px;
  transition:.25s;
}
.howto-step:hover{box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--brand) 35%,var(--line))}
.howto-step .num{
  width:44px;height:44px;border-radius:12px;background:linear-gradient(135deg,#5b3df5,#8a5cff);
  color:#fff;font-weight:900;display:grid;place-items:center;font-size:18px;
}
.howto-step h3{font-size:16px;margin-bottom:4px}
.howto-step p{font-size:14.5px;color:var(--muted)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--bg)}
table{width:100%;border-collapse:collapse;font-size:14.5px;min-width:640px}
th,td{padding:14px 16px;text-align:left;border-bottom:1px solid var(--line)}
th{background:var(--bg-soft);font-weight:700}
tr:last-child td{border-bottom:none}
tbody tr{transition:background .2s}
tbody tr:hover{background:var(--bg-soft)}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.contact-info{display:grid;gap:14px}
.contact-info div{display:flex;gap:12px;align-items:flex-start;font-size:15px}
.contact-info svg{width:20px;height:20px;color:var(--brand);flex-shrink:0;margin-top:3px}
.contact-info strong{display:block;font-size:14px;color:var(--muted);font-weight:600}
footer.site-footer{background:#1a1730;color:#c9c5e0;padding:56px 0 24px;font-size:14.5px}
footer.site-footer a{color:#c9c5e0}
footer.site-footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:36px}
.footer-grid h4{color:#fff;font-size:15px;margin-bottom:14px}
.footer-grid ul{list-style:none;display:grid;gap:8px}
.footer-bottom{border-top:1px solid #2d2946;padding-top:22px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;color:#8f8ab0}
.footer-bottom nav{display:flex;gap:16px;flex-wrap:wrap}
.back-top{
  position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:14px;
  background:var(--brand);color:#fff;border:none;cursor:pointer;display:grid;place-items:center;
  opacity:0;visibility:hidden;transition:.3s;z-index:90;box-shadow:0 8px 20px rgba(91,61,245,.4);
}
.back-top.show{opacity:1;visibility:visible}
.back-top:hover{transform:translateY(-3px)}
.back-top svg{width:22px;height:22px}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}
.tag-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.tag{padding:6px 14px;border-radius:999px;background:rgba(91,61,245,.1);color:var(--brand);font-size:13px;font-weight:600}
.team-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.team-card{text-align:center;padding:26px 20px}
.avatar{width:76px;height:76px;border-radius:50%;margin:0 auto 14px;display:grid;place-items:center;font-weight:900;font-size:22px;color:#fff}
.team-card h3{font-size:16px}
.team-card span{font-size:13px;color:var(--muted)}
.timeline{position:relative;padding-left:28px;display:grid;gap:22px}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;background:var(--line)}
.timeline-item{position:relative}
.timeline-item::before{content:"";position:absolute;left:-26px;top:6px;width:14px;height:14px;border-radius:50%;background:var(--brand);border:3px solid var(--bg);box-shadow:0 0 0 2px var(--brand)}
.timeline-item h4{font-size:15px;color:var(--brand);margin-bottom:4px}
.timeline-item p{font-size:14.5px;color:var(--muted)}
.breadcrumb{font-size:13.5px;color:var(--muted);padding:16px 0;display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span{color:var(--brand);font-weight:600}
@media (max-width:980px){
  .hero-inner{grid-template-columns:1fr}
  .grid-3,.grid-4,.team-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .article-list{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}
@media (max-width:720px){
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg);border-bottom:1px solid var(--line);flex-direction:column;padding:12px;gap:4px;box-shadow:var(--shadow)}
  .nav-links.open{display:flex}
  .menu-toggle{display:grid}
  .search-box input{width:150px}
  .search-box input:focus{width:180px}
  .grid-3,.grid-4,.grid-2,.team-grid{grid-template-columns:1fr}
  .hero{padding:44px 0 52px}
  .hero-stats{gap:20px}
  section{padding:48px 0}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
  .reveal{opacity:1;transform:none}
}
@media print{
  header.site-header,.back-top,.hero-actions,.carousel,.dots,footer.site-footer{display:none !important}
  body{color:#000;background:#fff}
  .card,.article-item,.faq-item{border-color:#ccc;box-shadow:none}
}