:root{color-scheme:dark;--bg:#0d0f10;--text:#f3f3ef;--muted:#9ba29f;--line:#2a2f2d;--accent:#b8f36b;--danger:#ff8a78;--warn:#f5cf6d;--max:1120px}*{box-sizing:border-box}html{background:var(--bg)}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}.topbar{height:76px;max-width:var(--max);margin:auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:11px;color:var(--text);text-decoration:none;font-weight:680;letter-spacing:-.02em}.brand-mark{display:grid;place-items:center;width:29px;height:29px;border:1px solid #59605c;border-radius:50%;font-size:13px}.product{font-size:13px;color:var(--muted)}main{max-width:var(--max);margin:auto;padding:0 28px}.hero{padding:108px 0 86px;max-width:860px}.eyebrow{font-size:11px;letter-spacing:.18em;font-weight:700;color:var(--accent);margin:0 0 18px}.hero h1{font-size:clamp(46px,7vw,82px);line-height:.98;letter-spacing:-.055em;margin:0 0 28px;font-weight:650}.lede{font-size:clamp(18px,2vw,23px);max-width:780px;color:#c4c8c5;margin:0;line-height:1.5}.verify-area,.result-section,.explain,.reference-section{border-top:1px solid var(--line);padding:48px 0 70px}.section-heading{display:grid;grid-template-columns:64px 1fr;gap:20px;margin-bottom:34px}.step{margin:5px 0 0;color:#69706c;font:600 12px/1 ui-monospace,SFMono-Regular,Menlo,monospace}.section-heading h2,.reference-section h2{margin:0 0 7px;font-size:26px;letter-spacing:-.03em}.section-heading p:not(.step),.reference-section p{margin:0;color:var(--muted)}.dropzone{min-height:235px;border:1px dashed #59615d;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;cursor:pointer;background:linear-gradient(180deg,rgba(255,255,255,.012),rgba(255,255,255,.025));transition:border-color .2s,background .2s}.dropzone:hover,.dropzone.drag{border-color:var(--accent);background:rgba(184,243,107,.035)}.dropzone strong{font-size:18px}.dropzone span{color:var(--muted)}.drop-icon{font-size:28px!important;color:var(--accent)!important;margin-bottom:10px}.hash-manual{margin-top:28px;display:grid;grid-template-columns:minmax(240px,330px) 1fr;gap:25px;align-items:center}.hash-manual label{font-size:13px;color:var(--muted)}.hash-line{display:flex;border-bottom:1px solid #555c58}.hash-line input{flex:1;background:none;border:0;color:var(--text);outline:0;padding:12px 0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;min-width:0}.hash-line button{border:0;background:none;color:var(--accent);font-weight:700;cursor:pointer;padding:0 0 0 20px}.status-banner{padding:26px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:clamp(24px,3vw,38px);font-weight:620;letter-spacing:-.035em}.status-banner.ok{color:var(--accent)}.status-banner.bad{color:var(--danger)}.status-banner.warn{color:var(--warn)}.facts{margin:0}.facts>div{display:grid;grid-template-columns:minmax(180px,31%) 1fr;gap:24px;padding:17px 0;border-bottom:1px solid var(--line)}.facts dt{color:var(--muted);font-size:13px}.facts dd{margin:0;overflow-wrap:anywhere}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.explain-grid{margin-left:84px;display:grid;grid-template-columns:repeat(3,1fr);gap:36px}.explain-grid p{margin:0;color:#b9beba}.explain-grid strong{color:var(--text)}.muted{color:var(--muted)!important}.reference-section{padding-left:84px}.reference-section h2{font-size:32px}footer{max-width:var(--max);margin:0 auto;padding:32px 28px 50px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:25px;color:#707672;font-size:12px}@media(max-width:720px){.topbar{padding:0 18px}.product{display:none}main{padding:0 18px}.hero{padding:72px 0 58px}.section-heading{grid-template-columns:38px 1fr}.hash-manual{grid-template-columns:1fr}.explain-grid{margin-left:0;grid-template-columns:1fr}.reference-section{padding-left:0}.facts>div{grid-template-columns:1fr;gap:4px}footer{padding-left:18px;padding-right:18px;flex-direction:column}.dropzone{min-height:190px}}