:root{
  --bg:#F6F4FC;--deep:#E8F2FA;--card:#FFFFFF;--ink:#2A2D4A;--text:#3A3E58;--muted:#6A6E88;--soft:#8A8EAA;
  --purple:#7B6BB5;--blue:#6BA3D6;--lilac:#C9B8E8;--mist:#B8D4F0;--peach:#E8B4B8;
  --border:rgba(42,45,74,.12);--shadow:0 14px 34px rgba(42,45,74,.09);--radius:14px;--max:1140px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;overflow-x:hidden}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;font-size:16px;line-height:1.75;overflow-x:hidden}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{cursor:pointer}
img{max-width:100%;display:block}
.site-header{position:fixed;z-index:80;top:0;left:0;right:0;background:#fff;box-shadow:0 6px 20px rgba(42,45,74,.05)}
.guoline{height:7px;padding:0 max(16px,calc((100vw - var(--max))/2));display:flex;align-items:center;justify-content:space-between;background:linear-gradient(90deg,var(--lilac),var(--mist));color:#fff;font-size:0;position:relative}
.guoline-brand,.line-action{position:absolute;top:7px;z-index:4;height:32px;display:flex;align-items:center;font-size:12px}
.guoline-brand{left:max(16px,calc((100vw - var(--max))/2));color:var(--ink);font-weight:700;letter-spacing:.04em}
.line-action{right:max(16px,calc((100vw - var(--max))/2));border:0;background:transparent;color:var(--purple);font-weight:700;padding:0 10px}
.guotai{height:48px;border-bottom:1px solid rgba(201,184,232,.65);display:flex;align-items:center;justify-content:space-between;padding:0 max(16px,calc((100vw - var(--max))/2));background:#fff}
.brand-link{height:48px;display:flex;align-items:center;max-width:240px}
.brand-logo{height:24px;width:auto;object-fit:contain}.brand-text{font-weight:800;color:var(--ink);font-size:20px;letter-spacing:.03em}
.guotai-actions{display:flex;gap:8px;align-items:center}.top-button{min-height:36px;padding:7px 14px;border-radius:10px;border:1px solid var(--blue);font-weight:700;display:inline-flex;align-items:center;justify-content:center}
.top-button.primary{background:var(--purple);color:#fff;border-color:var(--purple)}.top-button.secondary{background:#fff;color:var(--ink)}
.guolan{height:44px;background:#fff;display:flex;align-items:center;justify-content:center;border-bottom:1px solid var(--border)}
.guolan-group{display:flex;align-items:center;gap:0;height:100%}.guolan a{height:100%;padding:0 22px;display:flex;align-items:center;position:relative;color:var(--text);font-weight:650}
.guolan a+a:before{content:"";position:absolute;left:0;width:1px;height:15px;background:var(--mist)}.guolan a.active{color:var(--purple)}.guolan a.active:after{content:"";height:2px;background:var(--blue);left:20px;right:20px;bottom:0;position:absolute}
.site-main{padding-top:99px;min-height:62vh}.shell{width:min(var(--max),calc(100% - 32px));margin:0 auto}.page-hero{padding:44px 0 24px}.eyebrow{color:var(--purple);font-weight:800;letter-spacing:.08em;font-size:13px;text-transform:uppercase}.page-hero h1,.home-hero h1{font-size:clamp(28px,4vw,32px);line-height:1.3;color:var(--ink);margin:8px 0 14px}.lead{font-size:17px;color:var(--text);max-width:780px}.muted{color:var(--muted)}
.section{padding:26px 0}.section-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.card h2,.section h2{color:var(--ink);font-size:22px;line-height:1.35;margin:0 0 12px}.card h3{color:var(--ink);font-size:18px;margin:0 0 8px}.card p,.section p{margin:0 0 14px}.card p:last-child,.section p:last-child{margin-bottom:0}.soft-card{background:linear-gradient(135deg,#fff,#f1f5fb)}
.media-slot{min-height:160px;border-radius:var(--radius);background:linear-gradient(135deg,#efe9fb,#e5f1fb);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden}.media-slot img{width:100%;height:170px;object-fit:contain;object-position:center}.media-fallback{color:var(--ink);font-weight:800;letter-spacing:.05em;padding:24px;text-align:center}.cover-slot{min-height:180px;max-height:210px}.cover-slot img{height:min(210px,28vw);max-height:210px;object-fit:contain}.app-slot img{max-height:420px;height:auto;width:auto;object-fit:contain;margin:auto}.mark-slot{min-height:110px}.mark-slot img{width:72px;height:72px;object-fit:contain}
.home-hero{padding:32px 0 28px;text-align:center}.home-hero .hero-copy{max-width:800px;margin:18px auto 0}.kicker{font-weight:800;color:var(--purple);margin-bottom:6px}.button-row{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:20px}.btn{min-height:44px;border-radius:10px;padding:9px 16px;display:inline-flex;align-items:center;justify-content:center;font-weight:800}.btn.primary{background:var(--purple);color:#fff}.btn.secondary{background:#fff;color:var(--ink);border:1px solid var(--blue)}
.split-feature{display:grid;grid-template-columns:1fr 1fr;gap:22px}.feature-panel{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px}.feature-panel .media-slot{margin-bottom:18px}.feature-panel h2{margin:0 0 10px;color:var(--ink);font-size:22px}.text-link{color:var(--purple);font-weight:800;display:inline-flex;min-height:44px;align-items:center}
.four-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.mini-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}.mini-card .media-slot{min-height:138px;margin-bottom:14px}.mini-card .media-slot img{height:150px}.mini-card h3{color:var(--ink);font-size:19px;margin:0 0 8px}.mini-card p{font-size:15px;margin:0 0 8px}.band{background:var(--deep);border-block:1px solid rgba(107,163,214,.2)}
.article-flow{display:grid;gap:20px;padding-bottom:44px}.article-flow article,.info-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}.article-flow h2{color:var(--ink);font-size:22px;margin:0 0 10px}.article-flow h3{color:var(--ink);font-size:18px;margin:18px 0 8px}.article-flow p{margin:0 0 12px}.article-flow ul{padding-left:20px;margin:10px 0}.article-flow li{margin:7px 0}.tagline{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}.tag{border:1px solid var(--mist);background:#fff;border-radius:9px;padding:6px 10px;color:var(--ink);font-size:14px}
.notice{border-left:4px solid var(--peach);background:#fff;padding:16px 18px;border-radius:0 12px 12px 0;color:var(--text)}.fact-box{border-left:4px solid var(--blue)}.opinion-box{border-left:4px solid var(--purple)}
.table-wrap{overflow-x:auto;border-radius:12px;border:1px solid var(--border)}table{width:100%;border-collapse:collapse;background:#fff;min-width:640px}th,td{text-align:left;padding:13px 14px;border-bottom:1px solid var(--border);vertical-align:top}th{color:var(--ink);background:#eef5fb}tr:last-child td{border-bottom:0}
.faq-list{display:grid;gap:14px;padding-bottom:44px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px}.faq-item h2{font-size:18px;color:var(--ink);margin:0 0 8px}.faq-item p{margin:0}
.site-footer{background:var(--ink);color:#E8E4F6;margin-top:32px;padding:38px 0 calc(28px + env(safe-area-inset-bottom))}.footer-inner{width:min(var(--max),calc(100% - 32px));margin:0 auto}.footer-brand{display:grid;grid-template-columns:280px 1fr;gap:28px;align-items:start;padding-bottom:24px;border-bottom:1px solid rgba(232,228,246,.14)}.footer-brand-link{display:flex;align-items:center;gap:12px;color:#fff}.footer-logo{height:24px;width:auto;object-fit:contain}.footer-brand-link span{display:grid;line-height:1.25}.footer-brand-link small{color:var(--lilac);font-size:11px;letter-spacing:.08em}.footer-brand p{margin:0;color:#E8E4F6}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;padding:24px 0}.footer-links h2{font-size:15px;color:#fff;margin:0 0 10px}.footer-links a{display:block;color:#E8E4F6;padding:5px 0}.footer-bottom{padding-top:16px;border-top:1px solid rgba(232,228,246,.14);display:flex;gap:16px;flex-wrap:wrap;color:var(--lilac);font-size:14px}.footer-bottom a{color:#fff}
.screen-overlay{position:fixed;z-index:89;inset:55px 0 0;background:rgba(42,45,74,.26);opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.screen-overlay.open{opacity:1;visibility:visible;pointer-events:auto}.guobox,.search-layer{position:fixed;z-index:90;top:55px;left:50%;transform:translate(-50%,-10px);background:#fff;border:1px solid var(--border);box-shadow:0 24px 54px rgba(42,45,74,.2);opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.guobox.open,.search-layer.open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%,0)}
.guobox{width:min(640px,calc(100% - 32px));max-height:360px;border-radius:0 0 16px 16px;border-top:3px solid transparent;background:linear-gradient(#fff,#fff) padding-box,linear-gradient(90deg,var(--purple),var(--blue)) border-box;overflow:auto}.guobox-head,.search-head{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border)}.guobox-brand{display:flex;align-items:center;gap:10px;color:var(--ink)}.guobox-brand img{height:22px;width:auto;object-fit:contain}.icon-close{min-height:44px;border:0;background:#fff;color:var(--purple);font-weight:800;padding:8px 10px}.guobox-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;padding:18px}.guobox-grid section{border:1px solid var(--border);border-radius:12px;padding:13px}.guobox-grid h2{font-size:14px;margin:0 0 8px;color:var(--purple)}.guobox-grid a{display:block;padding:7px 0;border-top:1px solid rgba(42,45,74,.08)}.guobox-grid a:first-of-type{border-top:0}.guobox-grid b{display:block;color:var(--ink);font-size:15px}.guobox-grid span{display:block;color:var(--muted);font-size:12px;line-height:1.45;margin-top:2px}
.search-layer{width:min(420px,calc(100% - 32px));padding-bottom:18px;border-radius:0 0 16px 16px}.search-layer label{display:block;color:var(--muted);font-size:14px;padding:16px 18px 8px}.search-layer input{display:block;width:calc(100% - 36px);margin:0 18px;border:1px solid var(--mist);border-radius:10px;min-height:44px;padding:10px 12px;color:var(--ink);background:#fff}.search-presets{display:flex;flex-wrap:wrap;gap:8px;padding:14px 18px 0}.search-presets a{min-height:40px;display:inline-flex;align-items:center;border:1px solid var(--mist);border-radius:9px;padding:6px 10px;color:var(--ink);background:#f8fbff}.layer-open{overflow:hidden}.mobile-bottom{display:none}
a:hover,.top-button:hover,.icon-close:hover,.line-action:hover{filter:brightness(.96)}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(107,163,214,.45);outline-offset:2px}
@media(max-width:900px){.four-grid{grid-template-columns:1fr 1fr}.footer-brand{grid-template-columns:1fr}.footer-links{grid-template-columns:1fr 1fr}}
@media(max-width:720px){
  body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.site-main{padding-top:55px}.guolan{display:none}.guoline-brand{max-width:58vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.guotai{padding-left:16px;padding-right:16px}.guotai-actions{gap:6px}.top-button{min-height:44px;padding:8px 11px}.brand-link{max-width:42vw}.brand-logo{max-width:100%;height:22px}.brand-text{font-size:18px}
  .page-hero{padding-top:32px}.section-grid,.split-feature{grid-template-columns:1fr}.four-grid{grid-template-columns:1fr}.cover-slot img{height:auto;max-height:210px}.media-slot img{height:auto;max-height:180px}
  .guobox{width:calc(100% - 20px);max-height:60vh}.guobox-grid{grid-template-columns:1fr;gap:10px}.screen-overlay{inset:55px 0 0}.footer-links{grid-template-columns:1fr 1fr}.site-footer{padding-bottom:calc(80px + env(safe-area-inset-bottom))}
  .mobile-bottom{position:fixed;z-index:70;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(5,1fr);box-shadow:0 -8px 24px rgba(42,45,74,.08)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;min-height:50px;font-size:13px;color:var(--ink);font-weight:700}.mobile-bottom a.active{background:var(--purple);color:#fff}
}
@media(max-width:460px){.shell,.footer-inner{width:calc(100% - 32px)}.home-hero{padding-top:24px}.card,.article-flow article,.info-box{padding:19px}.footer-links{grid-template-columns:1fr 1fr;gap:14px}.guoline-brand{font-size:11px}}