.s404-check{--s404-accent:#d6fb00;--s404-bg:#090909;--s404-card:#101010;--s404-line:#292929;--s404-muted:#858585;--s404-good:#d6fb00;--s404-warn:#f2c14e;--s404-bad:#ff5a67;background:var(--s404-bg);color:#f5f5f5;border:1px solid #222;padding:clamp(24px,4vw,54px);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;max-width:1180px;margin:40px auto;box-sizing:border-box}.s404-check *{box-sizing:border-box}.s404-check__eyebrow,.s404-kicker{font:700 11px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.16em;color:var(--s404-accent)}.s404-check h2{font-size:clamp(34px,6vw,72px);letter-spacing:-.055em;line-height:.95;margin:12px 0 16px;max-width:900px}.s404-check__intro{color:#a9a9a9;font-size:16px;max-width:740px;margin:0 0 30px}.s404-check__urlrow{display:flex;border:1px solid #343434;background:#101010}.s404-check input,.s404-check select,.s404-check textarea{font:inherit;background:#111;color:#fff;border:1px solid #303030;outline:none}.s404-check__urlrow input{flex:1;border:0;padding:19px 20px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:16px}.s404-check button{border:0;background:var(--s404-accent);color:#080808;font-weight:850;padding:0 24px;cursor:pointer;min-height:56px}.s404-check button:hover{filter:brightness(.92)}.s404-check button:disabled{opacity:.55;cursor:wait}.s404-check__hint{font-size:12px;color:#686868;margin-top:10px}.s404-scan{margin-top:34px;border-top:1px solid #272727;padding-top:20px}.s404-scan__head,.s404-section-title{display:flex;justify-content:space-between;gap:20px;font:650 11px/1.2 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.13em;color:#777}.s404-section-title--spaced{margin-top:42px}.s404-progress{height:2px;background:#222;margin:12px 0 20px}.s404-progress i{display:block;height:100%;width:0;background:var(--s404-accent);transition:width .35s}.s404-console{font:12px/1.8 ui-monospace,SFMono-Regular,Menlo,monospace;color:#888;max-height:190px;overflow:hidden}.s404-console span{color:#4c4c4c}.s404-console .ok{color:var(--s404-accent)}.s404-results{margin-top:38px}.s404-report-head{display:flex;justify-content:space-between;align-items:flex-end;gap:30px;border-top:1px solid #2b2b2b;padding-top:26px}.s404-report-head h3{font-size:clamp(32px,5vw,64px);line-height:1;margin:8px 0;word-break:break-word}.s404-report-head p{color:#777;margin:0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-all}.s404-overall{text-align:right}.s404-overall>span{display:block;font:700 10px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.14em;color:#777;margin-bottom:8px}.s404-overall div{display:flex;align-items:baseline;justify-content:flex-end}.s404-overall strong{font-size:clamp(68px,10vw,120px);letter-spacing:-.08em;line-height:.8}.s404-overall em{font-style:normal;color:#777;font-size:18px}.s404-overall.good strong,.s404-category__score.good strong{color:var(--s404-good)}.s404-overall.mid strong,.s404-category__score.mid strong{color:var(--s404-warn)}.s404-overall.bad strong,.s404-category__score.bad strong{color:var(--s404-bad)}.s404-facts{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border:1px solid var(--s404-line);margin:30px 0 14px}.s404-facts>div{padding:17px 18px;border-right:1px solid var(--s404-line);min-width:0}.s404-facts>div:last-child{border-right:0}.s404-facts span{display:block;color:#666;font:650 9px ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.12em;margin-bottom:7px}.s404-facts strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.s404-summaryline{display:flex;gap:26px;align-items:center;margin:0 0 36px;color:#777}.s404-summaryline div{display:flex;gap:7px;align-items:baseline}.s404-summaryline strong{font-size:24px;color:#fff}.s404-summaryline span{font-size:12px}.s404-scoregrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:14px 0 0}.s404-scorecard{background:var(--s404-card);border:1px solid var(--s404-line);padding:18px;min-width:0}.s404-scorecard__top{display:flex;justify-content:space-between;gap:20px;align-items:flex-start}.s404-scorecard__top>div span{display:block;font-size:15px;font-weight:750}.s404-scorecard__top small{display:block;color:#666;font:9px ui-monospace,SFMono-Regular,Menlo,monospace;text-transform:uppercase;letter-spacing:.09em;margin-top:4px}.s404-scorecard__top>strong{font:800 32px/1 ui-monospace,SFMono-Regular,Menlo,monospace}.s404-scorecard.good .s404-scorecard__top>strong{color:var(--s404-good)}.s404-scorecard.mid .s404-scorecard__top>strong{color:var(--s404-warn)}.s404-scorecard.bad .s404-scorecard__top>strong{color:var(--s404-bad)}.s404-meter{height:4px;background:#202020;overflow:hidden;margin:13px 0}.s404-meter i{height:100%;display:block;background:var(--s404-accent)}.s404-scorecard.good .s404-meter i{background:var(--s404-good)}.s404-scorecard.mid .s404-meter i{background:var(--s404-warn)}.s404-scorecard.bad .s404-meter i{background:var(--s404-bad)}.s404-scorecard__meta{display:flex;justify-content:space-between;gap:10px;color:#666;font-size:10px}.s404-subscores{margin-top:14px;border-top:1px solid #232323;padding-top:10px}.s404-subscore{display:flex;justify-content:space-between;gap:10px;padding:4px 0;color:#888;font-size:10px}.s404-subscore strong{color:#bbb;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.s404-priorities{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}.s404-priority{display:grid;grid-template-columns:42px 1fr;background:#101010;border:1px solid var(--s404-line);min-height:200px}.s404-priority.fail{border-top-color:var(--s404-bad)}.s404-priority.warn{border-top-color:var(--s404-warn)}.s404-priority__num{padding:18px 0 0 14px;color:#444;font:700 11px ui-monospace,SFMono-Regular,Menlo,monospace}.s404-priority__body{padding:18px 18px 18px 6px}.s404-priority__meta{display:flex;justify-content:space-between;gap:8px;font:700 9px ui-monospace,SFMono-Regular,Menlo,monospace;color:#6c6c6c;letter-spacing:.07em}.s404-priority h4{font-size:18px;margin:25px 0 9px}.s404-priority p{font-size:12px;color:#9a9a9a;line-height:1.55;margin:0}.s404-priority__action{margin-top:13px;color:var(--s404-accent);font-size:11px;line-height:1.45}.s404-empty,.s404-allgood{border:1px solid var(--s404-line);padding:18px;color:#888}.s404-unlock,.s404-leadbox{display:grid;grid-template-columns:1.1fr 1fr;gap:40px;background:#111;border:1px solid #323232;margin-top:28px;padding:30px}.s404-unlock h3,.s404-leadbox h3{font-size:28px;margin:8px 0}.s404-unlock p,.s404-leadbox p{color:#999;line-height:1.55}.s404-unlock form{display:flex;flex-direction:column;gap:12px}.s404-unlock input[type=email]{padding:15px}.s404-checkline{display:flex;gap:9px;font-size:11px;color:#777;line-height:1.4}.s404-checkline input{width:auto}.s404-unlock small{font-size:10px;color:#666}.s404-unlock a{color:#999}.s404-full{margin-top:50px;border-top:1px solid #2b2b2b;padding-top:26px}.s404-full__head{display:flex;justify-content:space-between;gap:30px;align-items:flex-start}.s404-full__head h3{font-size:clamp(28px,4vw,46px);margin:8px 0}.s404-full__head p{color:#888;max-width:650px;line-height:1.55}.s404-reportdate{font:10px ui-monospace,SFMono-Regular,Menlo,monospace;color:#666}.s404-actionplan{margin:26px 0 34px;border:1px solid var(--s404-line);padding:18px}.s404-actionitem{display:grid;grid-template-columns:45px 1fr;gap:10px;border-top:1px solid #232323;padding:15px 0}.s404-actionitem:first-of-type{margin-top:10px}.s404-actionitem>b{font:700 11px ui-monospace,SFMono-Regular,Menlo,monospace;color:var(--s404-accent)}.s404-actionitem span{display:flex;flex-direction:column;gap:4px}.s404-actionitem strong{font-size:14px}.s404-actionitem small{color:#888;font-size:12px;line-height:1.45}.s404-categorylist{display:flex;flex-direction:column;gap:8px}.s404-category{border:1px solid var(--s404-line);background:#0d0d0d}.s404-category>summary{list-style:none;cursor:pointer;display:flex;justify-content:space-between;gap:20px;align-items:center;padding:18px 20px}.s404-category>summary::-webkit-details-marker{display:none}.s404-category>summary>div:first-child{display:flex;flex-direction:column;gap:4px}.s404-category__name{font-size:17px;font-weight:780}.s404-category>summary small{color:#666;font-size:10px}.s404-category__score{display:flex;align-items:baseline;gap:3px}.s404-category__score strong{font:800 26px ui-monospace,SFMono-Regular,Menlo,monospace}.s404-category__score span{color:#666;font-size:10px}.s404-category__body{border-top:1px solid #232323;padding:18px 20px 20px}.s404-subchiprow{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:18px}.s404-subchip{border:1px solid #2b2b2b;padding:8px 10px;display:flex;gap:12px;font-size:10px;color:#777}.s404-subchip strong{color:#ddd;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.s404-issue-list{display:flex;flex-direction:column;gap:8px}.s404-checkrow{display:grid;grid-template-columns:30px 1fr;gap:12px;border:1px solid #252525;background:#101010;padding:14px}.s404-checkrow__icon{width:24px;height:24px;border:1px solid #333;display:flex;align-items:center;justify-content:center;font:800 12px ui-monospace,SFMono-Regular,Menlo,monospace}.s404-checkrow.fail .s404-checkrow__icon{border-color:var(--s404-bad);color:var(--s404-bad)}.s404-checkrow.warn .s404-checkrow__icon{border-color:var(--s404-warn);color:var(--s404-warn)}.s404-checkrow.pass .s404-checkrow__icon{border-color:var(--s404-good);color:var(--s404-good)}.s404-checkrow__head{display:flex;justify-content:space-between;gap:15px;align-items:flex-start}.s404-checkrow__head h4{font-size:14px;margin:1px 0 6px}.s404-checkrow__head span{font:700 8px ui-monospace,SFMono-Regular,Menlo,monospace;color:#666;letter-spacing:.08em}.s404-checkrow p{margin:0;color:#929292;font-size:12px;line-height:1.45}.s404-recommendation{display:grid;grid-template-columns:85px 1fr;gap:10px;margin-top:10px;padding-top:10px;border-top:1px solid #232323;font-size:11px}.s404-recommendation b{color:var(--s404-accent)}.s404-recommendation span{color:#aaa}.s404-tags{display:flex;gap:7px;margin-top:10px}.s404-tags span{border:1px solid #292929;padding:4px 7px;font:8px ui-monospace,SFMono-Regular,Menlo,monospace;color:#666;text-transform:uppercase}.s404-passed{margin-top:12px;border-top:1px solid #222;padding-top:10px}.s404-passed>summary{cursor:pointer;color:#777;font-size:11px}.s404-passed>div{display:flex;flex-direction:column;gap:6px;margin-top:10px}.s404-secondary{background:transparent!important;color:#fff!important;border:1px solid #3a3a3a!important}.s404-leadform{margin-top:14px;border:1px solid #303030;padding:30px;background:#0f0f0f}.s404-leadform label{display:flex;flex-direction:column;gap:7px;color:#999;font-size:12px;margin-bottom:14px}.s404-leadform input,.s404-leadform select,.s404-leadform textarea{padding:12px}.s404-grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 14px}.s404-hp{position:absolute!important;left:-10000px!important;width:1px!important;height:1px!important}.s404-error,.s404-success{padding:18px;border:1px solid #3a3a3a;background:#111}.s404-success{border-color:var(--s404-accent)}.s404-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@media(max-width:900px){.s404-scoregrid{grid-template-columns:repeat(2,minmax(0,1fr))}.s404-priorities{grid-template-columns:1fr}.s404-facts{grid-template-columns:repeat(2,1fr)}.s404-facts>div:nth-child(2){border-right:0}.s404-facts>div:nth-child(-n+2){border-bottom:1px solid var(--s404-line)}}@media(max-width:760px){.s404-check{margin:20px auto;padding:24px 18px}.s404-check__urlrow{flex-direction:column}.s404-check__urlrow button{width:100%}.s404-report-head,.s404-full__head{align-items:flex-start;flex-direction:column}.s404-overall{text-align:left}.s404-overall div{justify-content:flex-start}.s404-overall strong{font-size:74px}.s404-scoregrid,.s404-unlock,.s404-leadbox,.s404-grid2{grid-template-columns:1fr}.s404-summaryline{gap:14px;flex-wrap:wrap}.s404-unlock,.s404-leadbox{padding:22px;gap:16px}.s404-category>summary,.s404-category__body{padding-left:14px;padding-right:14px}.s404-checkrow{grid-template-columns:26px 1fr}.s404-recommendation{grid-template-columns:1fr}.s404-section-title{gap:12px}.s404-section-title span:last-child{text-align:right}}

.s404-leadbox__actions{display:flex;flex-direction:column;gap:10px;justify-content:center}.s404-leadbox__actions button{width:100%}.s404-leadform__head{margin-bottom:22px}.s404-leadform__head h3{font-size:30px;margin:8px 0}.s404-leadform__head p{color:#888;margin:0}.s404-optional{font-size:10px;color:#666;font-weight:400}.s404-formnote{display:block;color:#666;font-size:10px;margin-top:10px}.s404-success strong{color:var(--s404-accent)}


/* v0.4 theme + customer UX */
.s404-check__topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:8px}
.s404-theme-switch{display:inline-flex;gap:3px;padding:3px;border:1px solid var(--s404-line);background:var(--s404-card)}
.s404-check .s404-theme-btn{min-height:30px;padding:0 9px;background:transparent;color:#8a8a8a;border:0;font:700 9px/1 ui-monospace,SFMono-Regular,Menlo,monospace;letter-spacing:.07em;text-transform:uppercase}
.s404-check .s404-theme-btn[aria-pressed="true"]{background:var(--s404-accent);color:#080808}
.s404-more-note{margin-top:12px;padding:10px 12px;border:1px dashed var(--s404-line);color:var(--s404-muted);font-size:11px}

.s404-check[data-s404-theme="light"]{--s404-bg:#f7f7f4;--s404-card:#fff;--s404-line:#d9d9d3;--s404-muted:#666;--s404-good:#557800;--s404-warn:#9a6500;--s404-bad:#c83246;background:var(--s404-bg);color:#151515;border-color:#dadad5}
.s404-check[data-s404-theme="light"] .s404-check__intro,
.s404-check[data-s404-theme="light"] .s404-check__hint,
.s404-check[data-s404-theme="light"] .s404-scan__head,
.s404-check[data-s404-theme="light"] .s404-section-title,
.s404-check[data-s404-theme="light"] .s404-console,
.s404-check[data-s404-theme="light"] .s404-report-head p,
.s404-check[data-s404-theme="light"] .s404-overall>span,
.s404-check[data-s404-theme="light"] .s404-overall em,
.s404-check[data-s404-theme="light"] .s404-summaryline,
.s404-check[data-s404-theme="light"] .s404-scorecard__top small,
.s404-check[data-s404-theme="light"] .s404-scorecard__meta,
.s404-check[data-s404-theme="light"] .s404-priority p,
.s404-check[data-s404-theme="light"] .s404-priority__meta,
.s404-check[data-s404-theme="light"] .s404-full__head p,
.s404-check[data-s404-theme="light"] .s404-reportdate,
.s404-check[data-s404-theme="light"] .s404-category>summary small,
.s404-check[data-s404-theme="light"] .s404-checkrow p,
.s404-check[data-s404-theme="light"] .s404-tags span,
.s404-check[data-s404-theme="light"] .s404-leadform label,
.s404-check[data-s404-theme="light"] .s404-formnote{color:#666}
.s404-check[data-s404-theme="light"] .s404-check__urlrow,
.s404-check[data-s404-theme="light"] .s404-scorecard,
.s404-check[data-s404-theme="light"] .s404-priority,
.s404-check[data-s404-theme="light"] .s404-category,
.s404-check[data-s404-theme="light"] .s404-checkrow,
.s404-check[data-s404-theme="light"] .s404-unlock,
.s404-check[data-s404-theme="light"] .s404-leadbox,
.s404-check[data-s404-theme="light"] .s404-leadform,
.s404-check[data-s404-theme="light"] .s404-error,
.s404-check[data-s404-theme="light"] .s404-success{background:#fff;border-color:var(--s404-line)}
.s404-check[data-s404-theme="light"] input,
.s404-check[data-s404-theme="light"] select,
.s404-check[data-s404-theme="light"] textarea{background:#fff;color:#111;border-color:#cfcfc9}
.s404-check[data-s404-theme="light"] .s404-report-head,
.s404-check[data-s404-theme="light"] .s404-full,
.s404-check[data-s404-theme="light"] .s404-category__body,
.s404-check[data-s404-theme="light"] .s404-recommendation,
.s404-check[data-s404-theme="light"] .s404-actionitem,
.s404-check[data-s404-theme="light"] .s404-subscores,
.s404-check[data-s404-theme="light"] .s404-scan{border-color:var(--s404-line)}
.s404-check[data-s404-theme="light"] .s404-summaryline strong,
.s404-check[data-s404-theme="light"] .s404-secondary{color:#151515!important}
.s404-check[data-s404-theme="light"] .s404-secondary{border-color:#bdbdb7!important}
.s404-check[data-s404-theme="light"] .s404-meter,
.s404-check[data-s404-theme="light"] .s404-progress{background:#e5e5df}
.s404-check[data-s404-theme="light"] .s404-subchip{border-color:#d7d7d1;color:#666;background:#fafaf8}
.s404-check[data-s404-theme="light"] .s404-subchip strong{color:#222}
.s404-check[data-s404-theme="light"] .s404-checkrow__head span{color:#777}
.s404-check[data-s404-theme="light"] .s404-checkrow__icon{border-color:#c9c9c3}
.s404-check[data-s404-theme="light"] .s404-theme-switch{background:#fff}
.s404-check[data-s404-theme="light"] .s404-theme-btn{color:#666}

@media(max-width:620px){.s404-check__topbar{align-items:flex-start;flex-direction:column}.s404-theme-switch{align-self:flex-end}.s404-check .s404-theme-btn{padding:0 8px}}