:root{--bg:#F3F6F9;--surface:#fff;--soft:#E8EEF5;--title:#0B1220;--text:#1E293B;--muted:#475569;--quiet:#64748B;--blue:#2563EB;--lightblue:#60A5FA;--deepblue:#1D4ED8;--lime:#65A30D;--slate:#334155;--border:rgba(37,99,235,.16);--shadow:0 14px 36px rgba(11,18,32,.08);--radius:18px;--header-desktop:136px;--header-mobile:92px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;overflow-x:hidden}body.locked{overflow:hidden}a{color:inherit;text-decoration:none}button,input{font:inherit}.shell{width:min(1180px,calc(100% - 32px));margin:0 auto}.sr-only,.skip-link{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link:focus{clip:auto;width:auto;height:auto;margin:8px;z-index:300;padding:10px 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span{font-size:12px;opacity:.74}.footer-logo img{filter:brightness(0) invert(1)}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;padding:28px 0}.footer-grid h2{font-size:14px;color:#fff;margin:0 0 10px}.footer-grid a{display:block;color:#D6E4FF;padding:5px 0;font-size:14px}.footer-grid a:hover,.footer-grid a:focus-visible{color:#fff;text-decoration:underline}.footer-note{padding-top:20px;border-top:1px solid rgba(214,228,255,.16);font-size:13px;color:#a9bad7}.overlay{position:fixed;inset:0;background:rgba(11,18,32,.38);z-index:180;opacity:0;visibility:hidden;pointer-events:none;transition:.18s}.overlay.active{opacity:1;visibility:visible;pointer-events:auto}.mosaic-menu{position:fixed;inset:0;z-index:210;background:#f5f8fc;overflow-y:auto;transform:translateY(-18px);opacity:0;visibility:hidden;pointer-events:none;transition:.2s 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a:first-of-type{border-top:0}.mosaic-grid b{display:block;color:var(--title)}.mosaic-grid span{display:block;color:var(--muted);font-size:13px;line-height:1.6;margin-top:3px}.search-layer{position:fixed;z-index:205;left:0;right:0;top:92px;opacity:0;visibility:hidden;pointer-events:none}.search-layer[aria-hidden="false"]{opacity:1;visibility:visible;pointer-events:auto}.search-card{width:min(780px,calc(100% - 32px));margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:20px;box-shadow:0 22px 60px rgba(11,18,32,.18);padding:22px}.search-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.search-card label{display:block;font-weight:800;color:var(--title);margin-bottom:8px}.search-card input{width:100%;min-height:50px;border:1px solid rgba(37,99,235,.28);border-radius:14px;padding:0 14px;color:var(--title);background:#f8fbff}.search-card input:focus{outline:3px solid rgba(37,99,235,.16);border-color:var(--blue)}.search-presets{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.search-presets a{min-height:44px;display:inline-flex;align-items:center;padding:0 14px;border:1px solid var(--border);border-radius:999px;color:var(--blue);font-weight:800}.search-presets a:hover,.search-presets a:focus-visible{background:var(--soft);outline:none}.search-help{color:var(--quiet);font-size:13px;margin:12px 0 0}.mobile-nav{display:none}
@media(max-width:900px){.numbered-grid,.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mosaic-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.product-panel{grid-template-columns:1fr}.product-panel .placeholder{min-height:220px}.footer-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){:root{--header-mobile:92px}.tab-bar{display:none}.site-main{padding-top:calc(var(--header-mobile) + 20px)}.command-inner{grid-template-columns:52px minmax(0,1fr) 104px}.brand-mark{max-width:100%;overflow:hidden}.brand-mark img{max-width:126px}.app-link{padding:0 13px;font-size:14px}.page-hero .shell,.content-section .shell,.legal-section .shell,.faq-section .shell{padding:24px 20px}.theme-strips,.numbered-grid,.card-grid,.mural-grid,.index-list,.contact-cards{grid-template-columns:1fr}.feature-row,.feature-row.reverse{grid-template-columns:1fr}.file-row{grid-template-columns:48px 1fr}.file-row>a{grid-column:2}.meter-row{grid-template-columns:60px 1fr}.meter-num{font-size:34px}.footer-grid{grid-template-columns:1fr 1fr}.mosaic-top{grid-template-columns:1fr auto}.mosaic-top strong{display:none}.mosaic-grid{grid-template-columns:1fr 1fr;gap:10px}.mosaic-grid section{padding:14px}.mosaic-grid span{font-size:12px}.search-layer{inset:0;top:0;background:var(--bg);padding-top:14px;overflow-y:auto}.search-card{min-height:calc(100vh - 28px);box-shadow:none;border-radius:18px}.mobile-nav{position:fixed;z-index:160;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-nav a{display:flex;align-items:center;justify-content:center;min-width:0;font-size:12px;font-weight:800;color:var(--muted)}.mobile-nav a.active{color:var(--blue)}.site-footer{padding-bottom:calc(84px + env(safe-area-inset-bottom))}}
@media(max-width:480px){.shell{width:min(100% - 32px,1180px)}.mosaic-grid{grid-template-columns:1fr 1fr}.mosaic-grid a{padding:10px 0}.mosaic-grid b{font-size:14px}.mosaic-grid span{line-height:1.5}.theme-strip{grid-template-columns:18px 1fr}.theme-strip a{grid-column:2}.footer-grid{grid-template-columns:1fr 1fr;gap:18px}.page-hero h1{font-size:29px}}