:root{
  --bg:#EEF5FB;--deep:#E3EEF7;--card:#FFFFFF;--soft:#D7E8F4;--ink:#10263A;--text:#243848;--muted:#5A7388;--quiet:#7E93A6;
  --brand:#3B9FE0;--bright:#62B7EE;--steel:#1E6FB8;--ice:#A9D6F2;--mint:#2FA8A0;--border:rgba(30,111,184,.16);--border-strong:rgba(59,159,224,.38);--shadow:0 16px 40px rgba(16,38,58,.08);
  --top-desktop:136px;--top-mobile:92px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}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}img{display:block;max-width:100%;height:auto}a{color:var(--steel);text-decoration:none}a:hover{text-decoration:underline}button,a{touch-action:manipulation}button{font:inherit}.skip-link{position:fixed;left:16px;top:-60px;z-index:1000;background:#fff;color:var(--ink);padding:10px 14px;border:1px solid var(--brand);border-radius:10px}.skip-link:focus{top:8px}.shell-inner{width:min(1220px,calc(100% - 32px));margin:0 auto}
.browser-shell{position:fixed;inset:0 0 auto 0;z-index:80}.frame-bar{height:22px;background:var(--steel);color:#fff;font-size:12px}.frame-inner{height:22px;display:flex;align-items:center;justify-content:space-between}.frame-brand{letter-spacing:.05em}.frame-search{height:22px;border:0;background:transparent;color:#fff;padding:0 6px;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:flex;align-items:center;min-height:44px}.brand-logo{height:34px;width:auto;max-width:210px;object-fit:contain}.brand-fallback{font-weight:800;color:var(--ink);font-size:22px;letter-spacing:.03em}.toolbox-button{justify-self:center;min-height:44px;padding:8px 18px;border:1px solid var(--border-strong);border-radius:12px;background:var(--deep);color:var(--ink);cursor:pointer}.app-link{justify-self:end;display:inline-flex;align-items:center;min-height:44px;padding:8px 16px;border-radius:10px;background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);color:#fff;font-weight:700}.app-link:hover{text-decoration:none;filter:brightness(.98)}.tab-rail{height:44px;background:var(--soft);border-bottom:1px solid rgba(30,111,184,.26)}.tab-inner{height:44px;display:flex;align-items:center;gap:6px;overflow:hidden}.tab-link{display:inline-flex;align-items:center;height:32px;padding:0 12px;border-radius:8px;color:var(--ink);font-size:14px;white-space:nowrap}.tab-link.is-current{background:var(--brand);color:#fff;text-decoration:none}.site-main{padding-top:var(--top-desktop);min-height:70vh}.content-wrap{width:min(1220px,calc(100% - 32px));margin:0 auto;padding:34px 0 68px}.page-hero{padding:28px 0 20px}.eyebrow{display:inline-flex;align-items:center;min-height:30px;padding:4px 10px;border-radius:8px;background:var(--soft);color:var(--steel);font-weight:700;font-size:13px;letter-spacing:.04em}h1,h2,h3{color:var(--ink);line-height:1.25;margin-top:0}h1{font-size:clamp(28px,3vw,32px);margin:14px 0 12px}h2{font-size:22px;margin-bottom:12px}h3{font-size:18px;margin-bottom:8px}.lead{max-width:820px;color:var(--muted);font-size:17px}.hero-actions,.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:20px}.btn-primary,.btn-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border-radius:10px;font-weight:700}.btn-primary{background:linear-gradient(135deg,#62B7EE 0%,#3B9FE0 48%,#1E6FB8 100%);color:#fff}.btn-secondary{background:#fff;color:var(--steel);border:1px solid var(--border-strong)}.btn-primary:hover,.btn-secondary:hover{text-decoration:none;transform:translateY(-1px)}.media-slot{width:100%;min-height:190px;max-height:300px;border-radius:16px;background:linear-gradient(145deg,var(--soft),#f9fcff);border:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden;box-shadow:var(--shadow)}.media-slot img{width:100%;height:100%;max-height:300px;object-fit:contain;object-position:center}.media-slot.compact{min-height:180px;max-height:220px}.media-slot.compact img{max-height:220px}.media-slot.app-visual{min-height:260px;max-height:420px}.media-slot.app-visual img{max-height:420px;object-fit:contain}.media-fallback{color:var(--steel);font-weight:800;font-size:24px;letter-spacing:.08em}.app-icon-slot{width:72px;height:72px;min-height:72px;max-height:72px;border-radius:16px;background:#fff;border:1px solid var(--border);display:flex;align-items:center;justify-content:center;overflow:hidden}.app-icon-slot img{width:64px;height:64px;object-fit:contain;object-position:center}.app-icon-slot.media-fallback{font-size:11px;letter-spacing:0;text-align:center;padding:6px}.section{margin-top:28px;padding:28px;background:#fff;border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow)}.section.soft{background:var(--deep)}.section.no-card{background:transparent;border:0;box-shadow:none;padding:10px 0}.section-intro{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:18px}.section-intro p{margin:0;color:var(--muted);max-width:720px}.tag-grid,.card-grid,.theme-grid,.index-grid,.feature-grid{display:grid;gap:16px}.tag-grid{grid-template-columns:repeat(3,1fr)}.tag-card{padding:18px;border:1px solid var(--border);border-radius:12px;background:#fff}.tag-card::before{content:"";display:block;width:34px;height:5px;border-radius:3px;background:var(--bright);margin-bottom:12px}.tag-card:nth-child(even)::before{background:var(--mint)}.tag-card p{margin:0 0 8px;color:var(--muted)}.card-grid{grid-template-columns:repeat(3,1fr)}.view-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px}.view-card p{color:var(--muted)}.number-list{display:grid;gap:10px;margin:18px 0 0;padding:0;list-style:none}.number-list li{display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:start;padding:14px 0;border-top:1px solid var(--border)}.number-list li:first-child{border-top:0}.number{font-size:28px;font-weight:900;color:var(--steel);line-height:1}.index-grid{grid-template-columns:repeat(2,1fr)}.index-item{padding:18px;border-left:4px solid var(--brand);background:var(--deep);border-radius:0 12px 12px 0}.index-item p{margin-bottom:0;color:var(--muted)}.theme-grid{grid-template-columns:repeat(3,1fr)}.theme-tile{min-height:160px;padding:22px;border-radius:14px;background:var(--soft);border:1px solid var(--border);display:flex;flex-direction:column;justify-content:space-between}.theme-tile:nth-child(2n){background:#e8f6f3}.theme-tile a{font-weight:700}.shelf-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.shelf-row{display:grid;grid-template-columns:130px 1fr;gap:14px;padding:16px;border:1px solid var(--border);background:#fff;border-radius:12px}.shelf-label{font-weight:800;color:var(--steel)}.timeline{position:relative;margin:12px 0 0 10px;padding-left:30px;border-left:2px solid var(--ice)}.timeline-item{position:relative;padding:0 0 24px}.timeline-item::before{content:"";position:absolute;left:-38px;top:4px;width:14px;height:14px;border-radius:50%;background:var(--brand);border:3px solid #fff;box-shadow:0 0 0 1px var(--brand)}.status{display:inline-flex;padding:3px 8px;border-radius:7px;background:var(--soft);color:var(--steel);font-size:13px;font-weight:700}.lab-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.lab-card{padding:20px;border-radius:14px;background:#fff;border:1px solid var(--border)}.lab-card p{color:var(--muted)}.prose{max-width:860px}.prose p{margin:0 0 16px}.prose strong{color:var(--ink)}.quote-note{padding:18px 20px;border-left:4px solid var(--mint);background:#eef9f7;border-radius:0 12px 12px 0;color:var(--text)}.policy-list{display:grid;gap:14px}.policy-item{padding:18px;border-radius:12px;background:#fff;border:1px solid var(--border)}.faq-list{display:grid;gap:12px}.faq-item{padding:20px;border-radius:12px;background:#fff;border:1px solid var(--border)}.faq-item h2{font-size:18px}.app-layout{display:grid;grid-template-columns:minmax(260px,.8fr) minmax(0,1.2fr);gap:26px;align-items:center}.metric-free{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.metric-free article{padding:18px;background:#fff;border:1px solid var(--border);border-radius:12px}.notice{padding:16px 18px;background:#fff7e8;border:1px solid rgba(143,104,24,.18);border-radius:12px;color:#644d1f}.mini-nav{display:flex;flex-wrap:wrap;gap:8px}.mini-nav a{padding:8px 10px;background:#fff;border:1px solid var(--border);border-radius:8px}.site-footer{background:#10263A;color:#C7D8E6;padding:42px 0 calc(26px + env(safe-area-inset-bottom))}.footer-grid{display:grid;grid-template-columns:1.15fr 1.85fr;gap:36px}.footer-brand-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}.footer-logo{height:32px;width:auto;max-width:180px;object-fit:contain;filter:brightness(1.15)}.footer-brand-row div{display:flex;flex-direction:column}.footer-brand strong{color:#fff;font-size:18px}.footer-brand span{font-size:12px;letter-spacing:.08em}.footer-brand p{max-width:430px;margin:0;color:#C7D8E6}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.footer-links div{display:flex;flex-direction:column;gap:6px}.footer-links strong{color:#fff;margin-bottom:4px}.footer-links a,.footer-bottom a{color:#C7D8E6}.footer-bottom{display:flex;flex-wrap:wrap;gap:16px;border-top:1px solid rgba(199,216,230,.16);margin-top:28px;padding-top:18px;font-size:14px}.toolbox{position:fixed;z-index:120;top:0;right:0;width:min(420px,86vw);height:100dvh;background:#fff;box-shadow:-24px 0 50px rgba(16,38,58,.18);transform:translateX(105%);visibility:hidden;pointer-events:none;transition:transform .25s ease,visibility .25s}.toolbox.is-open{transform:translateX(0);visibility:visible;pointer-events:auto}.toolbox-head{height:76px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;border-bottom:1px solid var(--border);background:var(--deep)}.toolbox-brand{display:flex;align-items:center;gap:10px}.toolbox-brand img{height:30px;width:auto;max-width:150px;object-fit:contain}.icon-close{width:44px;height:44px;border:1px solid var(--border);border-radius:10px;background:#fff;color:var(--ink);font-size:26px;line-height:1;cursor:pointer}.toolbox-scroll{height:calc(100dvh - 76px);overflow:auto;padding:18px}.toolbox-scroll section+section{margin-top:18px}.toolbox-scroll h2{font-size:14px;color:var(--quiet);letter-spacing:.08em;margin:0 0 8px}.toolbox-scroll a{display:block;padding:11px 8px;border-radius:10px}.toolbox-scroll a:hover{background:var(--deep);text-decoration:none}.toolbox-scroll a strong{display:block;color:var(--ink)}.toolbox-scroll a span{display:block;color:var(--muted);font-size:13px;line-height:1.5;margin-top:2px}.search-layer{position:fixed;z-index:115;top:92px;left:0;right:0;visibility:hidden;pointer-events:none;opacity:0;transition:opacity .2s,visibility .2s}.search-layer.is-open{visibility:visible;pointer-events:auto;opacity:1}.search-card{width:min(760px,calc(100% - 32px));margin:16px auto;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow);border-radius:14px;padding:18px}.search-head{display:flex;align-items:center;justify-content:space-between;gap:12px;color:var(--ink)}.search-box{min-height:52px;display:flex;align-items:center;gap:10px;margin:16px 0;padding:0 14px;background:var(--deep);border:1px solid var(--border);border-radius:10px;color:var(--muted)}.preset-links{display:flex;flex-wrap:wrap;gap:8px}.preset-links a{min-height:44px;display:inline-flex;align-items:center;padding:8px 12px;border:1px solid var(--border);border-radius:10px;background:#fff}.page-overlay{position:fixed;z-index:105;inset:0;background:rgba(16,38,58,.34);opacity:0;visibility:hidden;pointer-events:none;transition:.2s}.page-overlay.is-active{opacity:1;visibility:visible;pointer-events:auto}.ui-locked{overflow:hidden}.mobile-nav{display:none}a:focus-visible,button:focus-visible{outline:3px solid rgba(59,159,224,.45);outline-offset:2px}
@media (max-width:900px){.tag-grid,.theme-grid,.card-grid{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:1fr}.app-layout{grid-template-columns:1fr}.media-slot.app-visual{max-height:360px}.metric-free{grid-template-columns:1fr}.footer-links{grid-template-columns:repeat(2,1fr)}}
@media (max-width:700px){:root{--top-desktop:92px}.tab-rail{display:none}.viewport-bar,.viewport-inner{height:70px}.viewport-inner{grid-template-columns:minmax(0,1fr) auto auto;gap:8px}.brand-logo{height:28px;max-width:128px}.brand-fallback{font-size:18px}.toolbox-button{padding:8px 11px}.app-link{padding:8px 11px}.site-main{padding-top:var(--top-mobile)}.content-wrap{padding:24px 0 84px}.section{padding:20px;margin-top:20px}.tag-grid,.theme-grid,.card-grid,.index-grid,.lab-grid,.shelf-grid{grid-template-columns:1fr}.shelf-row{grid-template-columns:1fr}.section-intro{display:block}.section-intro p{margin-top:8px}.media-slot{min-height:160px}.media-slot.compact{min-height:150px}.footer-links{grid-template-columns:repeat(2,1fr)}.site-footer{padding-bottom:calc(78px + env(safe-area-inset-bottom))}.mobile-nav{display:grid;position:fixed;z-index:70;left:0;right:0;bottom:0;grid-template-columns:repeat(5,1fr);height:calc(50px + env(safe-area-inset-bottom));padding-bottom:env(safe-area-inset-bottom);background:#fff;border-top:1px solid var(--border);box-shadow:0 -8px 24px rgba(16,38,58,.08)}.mobile-nav a{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px;min-width:0}.mobile-nav a.is-current{background:var(--brand);color:#fff}.search-layer{top:0;bottom:0;background:var(--soft);padding-top:calc(18px + env(safe-area-inset-top));overflow:auto}.search-card{margin:0 auto;background:transparent;border:0;box-shadow:none}.preset-links a{background:#fff}.toolbox{width:86vw}.frame-brand{max-width:70vw;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}}
@media (max-width:420px){.shell-inner,.content-wrap{width:calc(100% - 32px)}.frame-brand{font-size:11px}.toolbox-button span{font-size:14px}.app-link{font-size:14px}.footer-links{grid-template-columns:1fr 1fr}.number-list li{grid-template-columns:46px 1fr}.number{font-size:24px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}