:root{--bg:#F4F6FB;--card:#FFFFFF;--card2:#EEF2F9;--txt:#14213D;--mut:#55668A;--acc:#1F4E9C;--acc2:#2C6FD1;--gold:#B8791A;--ok:#15803D;--warn:#B45309;--bad:#B91C1C;--line:#DCE3EF;--soft:#F7F9FD}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--txt);font:16px/1.68 -apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;display:flex;flex-direction:column;min-height:100vh}
h1,h2,h3{line-height:1.25;font-weight:800}
a{color:var(--acc)}
:focus-visible{outline:2px solid var(--gold);outline-offset:2px;border-radius:4px}
.topnav{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.navin{max-width:1080px;margin:0 auto;display:flex;align-items:center;gap:18px;padding:9px 16px}
.brand{display:flex;align-items:center;gap:9px;color:var(--txt);text-decoration:none;font-weight:800;font-size:17px}
.nav-links{display:flex;gap:2px;overflow-x:auto;flex:1;margin-left:auto}
.nav-links a{color:var(--mut);text-decoration:none;font:500 13.5px -apple-system,'Segoe UI',sans-serif;padding:8px 10px;border-radius:8px;white-space:nowrap;transition:background .15s,color .15s}
.nav-links a:hover{color:var(--txt);background:var(--card2)}
.nav-links a.on{color:var(--acc);background:var(--card2)}
.wrap{max-width:1080px;margin:0 auto;padding:16px 16px 40px;flex:1;width:100%}
.hero{display:flex;gap:28px;align-items:center;padding:26px 0 20px}
.hero.slim{padding:30px 0 8px;align-items:flex-start}
.hero-txt{flex:1;min-width:0}
.hero h1{font-size:38px;margin:0 0 12px;letter-spacing:-.5px}
.hero.slim h1{font-size:32px}
.cillo{width:320px;height:200px;max-width:100%;flex-shrink:0;object-fit:contain}
.kicker{display:inline-block;font:800 12px -apple-system,'Segoe UI',sans-serif;letter-spacing:1.6px;text-transform:uppercase;color:var(--gold);margin:0 0 10px}
.lead{color:var(--mut);font-size:17.5px;margin:0 0 14px;max-width:660px}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:6px 0 10px}
.btn{display:inline-block;background:var(--acc);color:#fff;text-decoration:none;font:600 15px -apple-system,'Segoe UI',sans-serif;padding:12px 22px;border-radius:10px;border:1px solid var(--acc);cursor:pointer;transition:transform .15s,background .15s}
.btn:hover{background:#1A4488}
.btn:active{transform:scale(.98)}
.btn.ghost{background:#fff;border:1px solid var(--acc);color:var(--acc)}
.btn.ghost:hover{background:var(--card2)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.trustrow{color:var(--mut);font:500 13px -apple-system,'Segoe UI',sans-serif;margin:8px 0 0}
.hero-illo{width:min(360px,32vw);height:auto;flex-shrink:0}
.prose{max-width:780px}
.prose h2{font-size:23px;margin:30px 0 8px}
.prose h3{font-size:18px;margin:22px 0 6px}
.prose p{color:#2C3A57;margin:8px 0 14px}
.prose ul{color:#2C3A57;margin:8px 0 14px;padding-left:22px}
.prose li{margin:5px 0}
.prose table{margin:14px 0}
.disclaimer{border-left:3px solid var(--line);padding:8px 14px;color:var(--mut);font-size:13.5px;background:var(--soft);border-radius:0 8px 8px 0}
.faq{max-width:780px}
.faq h2{font-size:23px;margin:26px 0 10px}
.faq .qa{margin:12px 0;border-bottom:1px solid var(--line);padding-bottom:12px}
.faq h3{font-size:16.5px;margin:0 0 4px}
.faq p{color:#2C3A57;margin:0;font-size:15px}
.dtable{width:100%;border-collapse:collapse;font:14px -apple-system,'Segoe UI',sans-serif;margin:12px 0;background:#fff}
.dtable caption{text-align:left;color:var(--mut);font-size:13px;padding:4px 0}
.dtable th{text-align:left;color:var(--mut);font-weight:700;border-bottom:1px solid var(--line);padding:9px 10px;white-space:nowrap}
.dtable td{border-bottom:1px solid var(--line);padding:9px 10px}
.dtable.striped tr:nth-child(even) td{background:var(--soft)}
.tbl-wrap{overflow-x:auto;margin:0 -4px;padding:0 4px}
.tbl-wrap .dtable{min-width:560px}
.tablewide .tbl-wrap .dtable{min-width:660px}
.related h2,.tools h2,.guides h2,.how h2{font-size:24px;margin:34px 0 14px}
.rgrid,.tgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.rcard,.tcard{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:16px;text-decoration:none;color:var(--txt);display:flex;flex-direction:column;gap:5px;transition:transform .15s,border-color .15s,box-shadow .15s}
.rcard b,.tcard b{font:700 15.5px -apple-system,'Segoe UI',sans-serif}
.rcard span,.tcard span{color:var(--mut);font:13px -apple-system,'Segoe UI',sans-serif}
.rcard:hover,.tcard:hover{border-color:var(--acc2);transform:translateY(-2px);box-shadow:0 6px 18px rgba(31,78,156,.08)}
.rcard:active,.tcard:active{transform:translateY(0)}
.gwrap{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.grow{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:16px;text-decoration:none;color:var(--txt);display:flex;flex-direction:column;gap:5px}
.grow b{font:700 15.5px -apple-system,'Segoe UI',sans-serif}
.grow span{color:var(--mut);font:13px -apple-system,'Segoe UI',sans-serif}
.grow:hover{border-color:var(--acc2)}
.hgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.hcard{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:18px}
.hcard b{font:700 15.5px -apple-system,'Segoe UI',sans-serif;display:block;margin-bottom:6px}
.hcard p{color:var(--mut);font-size:13.5px;margin:0}
.site{border-top:1px solid var(--line);margin-top:44px;background:#fff}
.foot-grid{max-width:1080px;margin:0 auto;padding:28px 16px;display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:26px}
.foot-brand{display:flex;align-items:center;gap:8px;margin-bottom:8px}
.site p{max-width:760px;color:var(--mut);font:13.5px -apple-system,'Segoe UI',sans-serif;margin:6px 0}
.site b{font:700 13px -apple-system,'Segoe UI',sans-serif;color:var(--txt);display:block;margin:6px 0}
.site a{display:block;color:var(--mut);text-decoration:none;font:13px -apple-system,'Segoe UI',sans-serif;padding:3px 0}
.site a:hover{color:var(--acc)}
.foot-note{max-width:1080px;margin:0 auto;padding:14px 16px 22px;border-top:1px solid var(--line)}

/* ---------- checker tool ---------- */
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;display:grid;grid-template-columns:1.05fr .95fr;gap:22px;margin:18px 0}
.tool-card>*{min-width:0}
.cform .frow{margin-bottom:13px}
.cform label{display:block;font:700 13px -apple-system,'Segoe UI',sans-serif;margin-bottom:5px}
.cform .hint{display:block;font-weight:400;color:var(--mut);font-size:11.5px;margin-top:2px}
.cform select,.cform input[type=number],.cform input[type=text]{width:100%;background:#fff;border:1px solid var(--line);color:var(--txt);border-radius:9px;padding:10px 12px;font:15px -apple-system,'Segoe UI',sans-serif;transition:border-color .15s}
.cform select:hover,.cform input:hover{border-color:var(--acc2)}
.dropzone{border:2px dashed var(--line);border-radius:12px;background:var(--soft);padding:22px 16px;text-align:center;transition:border-color .15s,background .15s}
.dropzone.hot{border-color:var(--acc2);background:#EAF1FC}
.dropzone p{margin:6px 0 0;color:var(--mut);font-size:13px}
.dropzone .big{font-weight:700;font-size:15px}
.cres{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:16px;align-self:start}
.verdict{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:11px;font:700 15px -apple-system,'Segoe UI',sans-serif;margin-bottom:12px;border:1px solid transparent}
.verdict.pass{background:#E7F5EC;color:var(--ok);border-color:#BFE3CB}
.verdict.warn{background:#FDF3E2;color:var(--warn);border-color:#F2DDB4}
.verdict.fail{background:#FCEBEA;color:var(--bad);border-color:#F1C9C6}
.verdict.idle{background:var(--card2);color:var(--mut);border-color:var(--line)}
.chk{list-style:none;margin:0;padding:0}
.chk li{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid var(--line);font:14px -apple-system,'Segoe UI',sans-serif}
.chk li:last-child{border-bottom:none}
.chk .k{color:var(--mut)}
.chk .v{font-weight:700;white-space:nowrap;text-align:right}
.chk .v.ok{color:var(--ok)}
.chk .v.warn{color:var(--warn)}
.chk .v.bad{color:var(--bad)}
.rnote{color:var(--mut);font:12.5px -apple-system,'Segoe UI',sans-serif;margin-top:10px;line-height:1.5}
.canvwrap{position:relative;background:#0F172A;border-radius:12px;overflow:hidden;display:flex;align-items:center;justify-content:center;min-height:240px}
.canvwrap canvas{max-width:100%;height:auto;display:block}
.guidelegend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px;font:12.5px -apple-system,'Segoe UI',sans-serif;color:var(--mut)}
.guidelegend i{display:inline-block;width:16px;height:0;border-top:3px solid;vertical-align:middle;margin-right:5px}
.kbhint{color:var(--mut);font:12px -apple-system,'Segoe UI',sans-serif;margin:6px 0 0}
.actrow{margin-top:12px;display:flex;gap:10px;flex-wrap:wrap}
.pill{display:inline-grid;background:#fff;border:1px solid var(--line);color:var(--txt);border-radius:9px;padding:9px 14px;font:700 13px -apple-system,'Segoe UI',sans-serif;cursor:pointer;transition:transform .15s,border-color .15s;min-width:150px}
.pill:hover{border-color:var(--acc2)}
.pill:active{transform:scale(.97)}
.pill>span{grid-area:1/1;display:flex;align-items:center;justify-content:center;opacity:1;transition:opacity .18s;pointer-events:none}
.pill>span.alt{opacity:0}
.pill.did>span{opacity:0}
.pill.did>span.alt{opacity:1}
.err-inline{color:var(--bad);font:13px -apple-system,'Segoe UI',sans-serif;margin:6px 0 0;min-height:44px;visibility:hidden}
.err-inline.on{visibility:visible}
.steps{counter-reset:s;list-style:none;padding:0;margin:14px 0}
.steps li{counter-increment:s;position:relative;padding:0 0 16px 44px;margin:0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--acc);color:#fff;font:800 14px -apple-system,sans-serif;display:flex;align-items:center;justify-content:center}
.steps li b{display:block;margin-bottom:2px}
.callout{background:var(--soft);border:1px solid var(--line);border-left:4px solid var(--acc2);border-radius:0 10px 10px 0;padding:12px 16px;margin:16px 0}
.callout b{display:block;margin-bottom:4px}

/* ---------- search ---------- */
.site-search{position:relative;margin-left:auto}
.site-search-input{width:150px;background:var(--soft);border:1px solid var(--line);border-radius:9px;padding:7px 10px;font:13.5px -apple-system,'Segoe UI',sans-serif;color:var(--txt)}
.site-search-panel{display:none;position:absolute;top:calc(100% + 6px);right:0;width:330px;max-height:340px;overflow:auto;background:#fff;border:1px solid var(--line);border-radius:11px;box-shadow:0 12px 30px rgba(20,33,61,.16);z-index:60;padding:4px}
.site-search-panel.on{display:block}
.site-search-item{display:block;padding:8px 10px;border-radius:8px;text-decoration:none;color:var(--txt)}
.site-search-item b{display:block;font:700 13.5px -apple-system,sans-serif}
.site-search-item span{display:block;color:var(--mut);font:12px -apple-system,sans-serif;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.site-search-item.on,.site-search-item:hover{background:var(--card2)}

@media (max-width:920px){
.hero{flex-direction:column;align-items:flex-start;padding:24px 0 14px}
.hero-illo{width:min(400px,80vw)}
.cillo{height:280px}
.hero h1{font-size:34px}
.hero.slim h1{font-size:32px}
.tool-card{grid-template-columns:1fr;padding:14px;gap:16px}
.cform .frow{margin-bottom:8px}
.dropzone{padding:14px 12px}
.dropzone .big{font-size:14px}
.dropzone p{font-size:12.5px}
/* 单列布局下报告行必须可换行——nowrap 的值列会把列宽撑出视口，
   报告出现/消失时上方按钮被重排（点击审计布局零位移红线） */
.chk li{flex-wrap:wrap}
.chk .v{white-space:normal;text-align:left}
/* D01 首屏即工具：工具页移动端压缩 hero，让检查器在 390×844 首屏内可见可用。
   hero 内仍保留插图（≥hero 高 35%，ui_premium_audit hero-asset-scale 红线）；
   信任行在首页 hero 内让位给工具，同一组信任信息页脚原样保留。 */
.hero.toolhero{padding:16px 0 8px;gap:10px}
.hero.toolhero h1{font-size:30px;margin:0 0 8px}
.hero.toolhero .lead{font-size:15px;line-height:1.5;margin:0 0 8px}
.hero.toolhero .cillo{height:162px}
.hero.toolhero .cta-row{display:none}
.hero.toolhero .trustline{display:none}
.hero.toolhero .hero-illo{width:min(180px,46vw)}
.tgrid,.rgrid,.gwrap,.hgrid{grid-template-columns:repeat(2,1fr)}
.foot-grid{grid-template-columns:1fr 1fr}
.site-search-input{width:120px}
}
@media (max-width:768px){
.hero h1{font-size:30px}
.hero.slim h1{font-size:30px}
}
@media (max-width:560px){
.hero h1{font-size:30px}
.tgrid,.rgrid,.gwrap,.hgrid{grid-template-columns:1fr}
.foot-grid{grid-template-columns:1fr}
.site-search{display:none}
}
@media (prefers-reduced-motion:reduce){
*,*::before,*::after{animation:none!important;transition:none!important}
}
@media (min-width:1600px){
.wrap,.navin,.foot-grid,.foot-note{max-width:1240px}
.hero-txt{padding-right:24px}
}

/* ---------- spec matrix ---------- */
.specgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:16px 0}
.speccard{background:var(--card);border:1px solid var(--line);border-radius:13px;padding:15px;display:flex;flex-direction:column;gap:6px}
.speccard b{font:700 15px -apple-system,'Segoe UI',sans-serif}
.speccard .dim{font:800 20px -apple-system,'Segoe UI',sans-serif;color:var(--acc)}
.speccard span{color:var(--mut);font:12.5px -apple-system,'Segoe UI',sans-serif}
.speccard a{font:700 12.5px -apple-system,'Segoe UI',sans-serif;text-decoration:none;margin-top:auto}
.speccard a:hover{text-decoration:underline}
.guideband{display:flex;gap:22px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px;margin:18px 0}
.guideband .gtxt{flex:1;min-width:0}
.guideband h2{margin:0 0 8px;font-size:21px}
.guideband p{color:#2C3A57;margin:6px 0}
.guideband ul{color:#2C3A57;margin:6px 0;padding-left:20px}
.guideband img{width:min(300px,34vw);height:auto;flex-shrink:0}
.pricetable td.num{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
.badge{display:inline-block;font:700 11px -apple-system,'Segoe UI',sans-serif;letter-spacing:.4px;text-transform:uppercase;padding:3px 8px;border-radius:20px;background:var(--card2);color:var(--mut)}
.badge.ok{background:#E7F5EC;color:var(--ok)}
.badge.gold{background:#FBF0DC;color:var(--gold)}
.steps.small li{padding-bottom:12px}
.note{color:var(--mut);font:12.5px -apple-system,'Segoe UI',sans-serif;margin:8px 0 0}
.srcline{color:var(--mut);font:12.5px -apple-system,'Segoe UI',sans-serif;margin:6px 0 0;max-width:780px}
.srcline a{color:var(--mut);text-decoration:underline}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0}
.trustline{display:flex;gap:18px;flex-wrap:wrap;color:var(--mut);font:13px -apple-system,'Segoe UI',sans-serif;margin:10px 0 0;max-width:780px}
.specbar{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0 0}
.specbar a{font:600 12.5px -apple-system,'Segoe UI',sans-serif;text-decoration:none;background:var(--card2);border:1px solid var(--line);border-radius:20px;padding:6px 13px;color:var(--txt);transition:border-color .15s,background .15s}
.specbar a:hover{border-color:var(--acc2);background:#EAF1FC}
@media (max-width:920px){
.specgrid{grid-template-columns:repeat(2,1fr)}
.guideband{flex-direction:column}
.guideband img{width:min(340px,80vw)}
}
@media (max-width:560px){
.specgrid{grid-template-columns:1fr}
}

.ig{margin:26px auto;background:#fff;border:1px solid #E5E7EB;border-radius:16px;padding:14px;max-width:100%;width:fit-content}.ig{overflow-x:auto}.ig img{min-width:560px}.ig img{width:auto;max-width:100%;height:auto;display:block}.ig figcaption{text-align:center;font-size:13px;color:#6B7280;margin-top:8px}