:root{
  --bg:#EEF5FB;--deep:#E3EEF7;--card:#FFFFFF;--sub:#D7E8F4;--title:#10263A;--text:#243848;--muted:#5A7388;--soft:#7E93A6;
  --brand:#3B9FE0;--bright:#62B7EE;--steel:#1E6FB8;--ice:#A9D6F2;--mint:#2FA8A0;--border:rgba(30,111,184,.16);--strong:rgba(59,159,224,.38);--shadow:0 16px 40px rgba(16,38,58,.08);
}
*{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}.shell{width:min(1220px,calc(100% - 32px));margin:0 auto}a{color:var(--steel);text-decoration:none}a:hover{text-decoration:none}a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid rgba(59,159,224,.35);outline-offset:2px}button{font:inherit}.site-header{position:fixed;inset:0 0 auto 0;z-index:50}.window-bar{height:22px;background:var(--steel);color:#fff;font-size:12px}.window-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.window-brand{white-space:nowrap}.icon-button{border:0;background:transparent;color:#fff;min-height:22px;padding:0 8px;cursor:pointer}.viewport-bar{height:70px;background:#fff;border-bottom:1px solid var(--border)}.viewport-inner{height:70px;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:16px}.brand-link{justify-self:start;display:inline-flex;align-items:center;min-height:44px;max-width:280px}.brand-logo{height:34px;width:auto;max-width:230px;object-fit:contain}.brand-fallback{font-size:22px;font-weight:800;color:var(--title);letter-spacing:.02em}.tool-button{min-height:44px;padding:0 22px;border:1px solid var(--strong);background:var(--deep);color:var(--steel);border-radius:10px;cursor:pointer;font-weight:700}.app-link{justify-self:end;display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:10px;color:#fff;background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);font-weight:700}.tab-rail{height:44px;background:var(--deep);border-bottom:1px solid rgba(30,111,184,.22)}.tab-inner{height:44px;display:flex;align-items:center;gap:8px;overflow:hidden}.tab-inner a{display:inline-flex;align-items:center;min-height:30px;padding:0 12px;border-radius:8px;color:var(--text);white-space:nowrap;font-size:14px}.tab-inner a.active{background:var(--brand);color:#fff}.site-main{padding-top:154px;min-height:70vh}.page-wrap{padding:42px 0 72px}.hero-slot,.media-slot{background:linear-gradient(145deg,var(--deep),#f8fcff);border:1px solid var(--border);border-radius:16px;display:flex;align-items:center;justify-content:center;overflow:hidden}.hero-slot{min-height:220px;max-height:300px}.hero-slot img{width:100%;max-height:300px;object-fit:contain;object-position:center}.media-slot{min-height:180px}.media-slot img{width:100%;max-height:240px;object-fit:contain;object-position:center}.media-slot.tall img{max-height:420px}.fallback-art{width:100%;min-height:220px;display:grid;place-items:center;padding:24px;text-align:center;color:var(--steel);font-size:28px;font-weight:800;background:linear-gradient(135deg,var(--ice),#f8fcff 65%,var(--deep))}.eyebrow{display:inline-flex;align-items:center;min-height:30px;padding:4px 10px;border-radius:8px;background:var(--deep);color:var(--steel);font-size:13px;font-weight:700}.hero-copy{padding:26px 0 8px;max-width:900px}.hero-copy h1,.inner-hero h1{margin:.35em 0 .45em;font-size:clamp(28px,4vw,32px);line-height:1.22;color:var(--title)}.hero-copy p,.inner-hero p{margin:0;color:var(--muted);font-size:17px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:0 18px;border-radius:10px;font-weight:700;border:1px solid transparent}.btn.primary{background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);color:#fff}.btn.secondary{background:#fff;color:var(--steel);border-color:var(--strong)}.section{padding:34px 0}.section + .section{border-top:1px solid var(--border)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-head h2{margin:0;color:var(--title);font-size:24px}.section-head p{margin:0;color:var(--muted);max-width:640px}.grid{display:grid;gap:16px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.grid-6{grid-template-columns:repeat(3,minmax(0,1fr))}.card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px;box-shadow:var(--shadow)}.card h3{margin:0 0 8px;color:var(--title);font-size:19px}.card p{margin:0;color:var(--muted)}.card .mini-link{display:inline-flex;margin-top:14px;font-weight:700}.tone-bright{border-top:4px solid var(--bright)}.tone-mint{border-top:4px solid var(--mint)}.tone-steel{border-top:4px solid var(--steel)}.number-list{display:grid;gap:12px}.number-item{display:grid;grid-template-columns:68px 1fr;gap:16px;padding:18px;background:#fff;border:1px solid var(--border);border-radius:14px}.number{font-size:30px;line-height:1;color:var(--steel);font-weight:900}.number-item h3{margin:0 0 4px;color:var(--title)}.number-item p{margin:0;color:var(--muted)}.view-card{padding:0;overflow:hidden}.view-card .media-slot{border:0;border-radius:0;border-bottom:1px solid var(--border)}.view-copy{padding:18px}.view-copy p{color:var(--muted)}.list-lines{display:grid;gap:10px}.list-line{background:#fff;border:1px solid var(--border);border-radius:12px;padding:16px 18px;display:flex;gap:14px;align-items:flex-start}.list-line b{color:var(--steel);min-width:72px}.topic-grid .card{min-height:170px}.shelf{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border:1px solid var(--border);border-radius:14px;overflow:hidden;background:#fff}.shelf-item{padding:20px;border-right:1px solid var(--border);border-bottom:1px solid var(--border)}.shelf-item:nth-child(2n){border-right:0}.shelf-item:nth-last-child(-n+2){border-bottom:0}.shelf-item h3{margin:0 0 6px;color:var(--title)}.shelf-item p{margin:0;color:var(--muted)}.timeline{position:relative;margin-left:12px;padding-left:28px;border-left:2px solid var(--ice);display:grid;gap:18px}.timeline article{position:relative;background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px}.timeline article:before{content:"";position:absolute;left:-37px;top:23px;width:14px;height:14px;border-radius:50%;background:var(--brand);border:3px solid var(--bg)}.status{display:inline-flex;padding:3px 9px;border-radius:8px;background:var(--deep);color:var(--steel);font-size:12px;font-weight:800}.split{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.8fr);gap:20px;align-items:start}.prose{background:#fff;border:1px solid var(--border);border-radius:14px;padding:24px}.prose h2{color:var(--title);font-size:22px;margin:1.4em 0 .45em}.prose h2:first-child{margin-top:0}.prose h3{color:var(--title);font-size:18px;margin:1.2em 0 .35em}.prose p{margin:.6em 0;color:var(--text)}.prose ul{padding-left:1.2em}.prose li{margin:.45em 0}.aside-card{position:sticky;top:176px;background:var(--deep);border:1px solid var(--border);border-radius:14px;padding:20px}.aside-card h2{margin:0 0 10px;color:var(--title);font-size:18px}.aside-card a{display:flex;align-items:center;min-height:42px;border-top:1px solid var(--border);font-weight:700}.aside-card a:first-of-type{border-top:0}.note-box{border-left:4px solid var(--mint);background:#f7fbfc;padding:16px 18px;border-radius:0 12px 12px 0;color:var(--text)}.qa{display:grid;gap:14px}.qa article{background:#fff;border:1px solid var(--border);border-radius:14px;padding:20px}.qa h2{margin:0 0 8px;font-size:19px;color:var(--title)}.qa p{margin:0;color:var(--text)}.contact-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.contact-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:22px}.contact-card h2{font-size:20px;margin:0 0 8px;color:var(--title)}.contact-card p{margin:0;color:var(--muted)}.site-footer{background:var(--title);color:#C7D8E6;padding:50px 0 24px}.footer-grid{display:grid;grid-template-columns:1.7fr repeat(4,1fr);gap:28px}.footer-grid h2{font-size:14px;color:#fff;margin:0 0 12px}.footer-grid a{display:block;color:#C7D8E6;min-height:34px;font-size:14px}.footer-brand{display:inline-flex;align-items:center;gap:10px;color:#fff}.footer-brand strong,.footer-brand small{display:block}.footer-brand small{font-size:11px;letter-spacing:.08em;color:#C7D8E6}.footer-logo{height:30px;max-width:180px;object-fit:contain}.footer-brand-block p{font-size:14px;max-width:350px;color:#C7D8E6}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:18px;margin-top:28px;display:flex;gap:18px;flex-wrap:wrap;font-size:13px}.footer-bottom a{color:#fff}.tool-drawer{position:fixed;z-index:90;top:0;right:0;width:min(420px,86vw);height:100vh;background:#fff;box-shadow:-20px 0 50px rgba(16,38,58,.18);transform:translateX(102%);visibility:hidden;pointer-events:none;transition:transform .22s ease,visibility .22s;overflow-y:auto}.tool-drawer.open{transform:translateX(0);visibility:visible;pointer-events:auto}.drawer-head{position:sticky;top:0;background:#fff;border-bottom:1px solid var(--border);padding:14px 18px;display:flex;align-items:center;justify-content:space-between;z-index:2}.drawer-brand{display:flex;align-items:center;gap:10px}.drawer-brand img{height:30px;max-width:160px;object-fit:contain}.drawer-brand strong,.drawer-brand small{display:block}.drawer-brand small{font-size:10px;color:var(--muted)}.drawer-close,.search-close{min-height:44px;padding:0 14px;border:1px solid var(--strong);border-radius:10px;background:#fff;color:var(--steel);cursor:pointer}.drawer-groups{padding:10px 18px 32px}.drawer-groups section{padding:12px 0}.drawer-groups h2{font-size:14px;color:var(--soft);margin:0 0 6px}.drawer-groups a{display:block;padding:12px 0;border-top:1px solid var(--border)}.drawer-groups a:first-of-type{border-top:0}.drawer-groups strong{display:block;color:var(--title)}.drawer-groups span{display:block;color:var(--muted);font-size:13px}.site-overlay{position:fixed;inset:0;background:rgba(16,38,58,.34);z-index:80;opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.site-overlay.open{opacity:1;visibility:visible;pointer-events:auto}.overlay-open{overflow:hidden}.search-layer{position:fixed;z-index:91;top:92px;left:0;right:0;visibility:hidden;pointer-events:none}.search-layer.open{visibility:visible;pointer-events:auto}.search-card{width:min(760px,calc(100% - 32px));margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:0 0 16px 16px;box-shadow:var(--shadow);padding:22px}.search-head{display:flex;align-items:center;justify-content:space-between}.search-head h2{margin:0;color:var(--title);font-size:22px}.search-field{display:block;margin-top:16px}.search-field span{display:block;color:var(--muted);font-size:13px;margin-bottom:6px}.search-field input{width:100%;height:48px;border:1px solid var(--strong);border-radius:10px;padding:0 14px;background:var(--bg);color:var(--text);font-size:16px}.search-presets{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.search-presets a{display:inline-flex;align-items:center;min-height:42px;padding:0 13px;border:1px solid var(--border);border-radius:9px;background:var(--deep);font-weight:700}.search-card p{margin:14px 0 0;color:var(--muted);font-size:14px}.mobile-bottom{display:none}.app-feature{display:grid;grid-template-columns:minmax(230px,.72fr) minmax(0,1.28fr);gap:24px;align-items:center}.icon-line{display:flex;gap:14px;align-items:center}.app-icon{width:64px;height:64px;object-fit:contain}.brand-statement{padding:24px;background:linear-gradient(145deg,#fff,var(--deep));border:1px solid var(--border);border-radius:14px}.brand-statement h2{margin:0 0 8px;color:var(--title)}
@media (max-width:900px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3,.grid-6{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.footer-brand-block{grid-column:1/-1}.split{grid-template-columns:1fr}.aside-card{position:static}.app-feature{grid-template-columns:1fr}}
@media (max-width:700px){body{padding-bottom:calc(50px + env(safe-area-inset-bottom))}.site-main{padding-top:92px}.tab-rail{display:none}.viewport-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-link{min-width:0;overflow:hidden}.brand-logo{max-width:150px;height:30px}.brand-fallback{font-size:18px}.tool-button,.app-link{padding:0 11px;font-size:14px}.page-wrap{padding:28px 0 52px}.hero-slot{min-height:180px}.grid-2,.grid-3,.grid-4,.grid-6{grid-template-columns:1fr}.shelf{grid-template-columns:1fr}.shelf-item{border-right:0}.shelf-item:nth-last-child(-n+2){border-bottom:1px solid var(--border)}.shelf-item:last-child{border-bottom:0}.number-item{grid-template-columns:52px 1fr}.section{padding:28px 0}.section-head{display:block}.section-head p{margin-top:6px}.contact-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr 1fr;gap:20px}.search-layer{inset:0;background:var(--deep);overflow:auto}.search-card{width:100%;min-height:100vh;border:0;border-radius:0;margin:0;background:var(--deep);padding:calc(22px + env(safe-area-inset-top)) 16px 30px}.search-field input{background:#fff}.mobile-bottom{position:fixed;z-index:60;left:0;right:0;bottom:0;height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);display:grid;grid-template-columns:repeat(5,1fr);background:#fff;border-top:1px solid var(--border)}.mobile-bottom a{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:13px;min-height:50px}.mobile-bottom a.active{background:var(--brand);color:#fff;font-weight:800}.tool-drawer{z-index:90}.site-overlay{z-index:80}.hero-copy p,.inner-hero p{font-size:16px}.prose{padding:20px}.fallback-art{font-size:23px}.app-link{white-space:nowrap}}
@media (max-width:420px){.shell{width:min(100% - 32px,1220px)}.window-brand{font-size:11px}.brand-logo{max-width:120px}.brand-fallback{font-size:17px}.tool-button,.app-link{padding:0 9px}.footer-grid{grid-template-columns:1fr}.number-item{grid-template-columns:44px 1fr}.number{font-size:25px}}