:root{color-scheme:light;--bg:#f7f9fc;--paper:#fff;--ink:#18283e;--muted:#57677d;--line:#dce4ef;--brand:#4559ce;--soft:#eef1ff;--green:#167864;--code:#f0f4ff;--shadow:0 16px 42px #1d365b09;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}
:root[data-theme=dark]{color-scheme:dark;--bg:#101722;--paper:#192333;--ink:#edf2ff;--muted:#b0bed3;--line:#34435a;--brand:#a8b7ff;--soft:#283653;--green:#7bdcc3;--code:#222e47;--shadow:0 16px 42px #0002}
@media(prefers-color-scheme:dark){:root:not([data-theme=light]){color-scheme:dark;--bg:#101722;--paper:#192333;--ink:#edf2ff;--muted:#b0bed3;--line:#34435a;--brand:#a8b7ff;--soft:#283653;--green:#7bdcc3;--code:#222e47;--shadow:0 16px 42px #0002}}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);line-height:1.65}a{color:var(--brand);text-underline-offset:4px}button,input,select{font:inherit}button,select{cursor:pointer}button,a,input,select,summary{touch-action:manipulation}button{color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:9px;padding:10px 16px;font-weight:600}button:hover{border-color:var(--brand)}button:disabled{cursor:default;opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--brand);outline-offset:4px}.shell{width:min(1140px,calc(100% - 48px));margin:auto}.skip{position:absolute;top:-100px;z-index:10;background:var(--paper);padding:12px}.skip:focus{top:0}header{background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{min-height:80px;display:flex;align-items:center;gap:30px;flex-wrap:wrap;padding-block:12px}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font-size:23px;font-weight:750;letter-spacing:-.6px}.brand svg{width:35px;height:35px;color:var(--brand)}.brand em{color:var(--brand);font-style:normal}nav{display:flex;gap:24px;margin-inline-start:auto}nav a{font-size:14px;font-weight:600;text-decoration:none;color:var(--muted)}.preferences{display:flex;gap:9px;align-items:center}.preferences select{max-width:155px;font-size:13px;background:var(--paper);color:var(--ink);padding:9px;border:1px solid var(--line);border-radius:8px}#theme{width:39px;padding:6px;font-size:20px}.hero{text-align:center;padding:53px 0 30px}.eyebrow{color:var(--brand);font-size:12px;letter-spacing:2px;text-transform:uppercase;font-weight:750;display:flex;justify-content:center;align-items:center;gap:8px}.dot{width:7px;height:7px;border-radius:50%;background:var(--green)}h1{font-size:clamp(30px,4vw,46px);line-height:1.22;letter-spacing:-1.5px;margin:18px 0}h2{font-size:23px;line-height:1.35;letter-spacing:-.6px}h3{font-size:17px;line-height:1.4}.hero p{max-width:620px;margin:0 auto;color:var(--muted);font-size:16px}.trust{display:flex;justify-content:center;gap:26px;flex-wrap:wrap;margin:22px 0 0;color:var(--muted);font-size:12px}.trust span:before{content:'✓';margin-inline-end:7px;color:var(--green);font-weight:700}.workspace{display:grid;grid-template-columns:1.3fr 1fr;border:1px solid var(--line);border-radius:18px;background:var(--paper);box-shadow:var(--shadow);overflow:hidden}.entry{padding:30px;border-inline-end:1px solid var(--line)}.section-label{font-size:11px;letter-spacing:1.8px;color:var(--muted);font-weight:700;text-transform:uppercase;margin:0 0 20px}.step{display:inline-grid;place-items:center;width:22px;height:22px;border:1px solid var(--line);border-radius:6px;margin-inline-end:8px;font-size:11px;color:var(--brand)}label{display:block;font-size:13px;font-weight:650;margin-bottom:8px}.secret-row{display:flex;border:1px solid var(--line);border-radius:9px;overflow:hidden;background:var(--bg)}.secret-row:focus-within{outline:2px solid var(--brand);outline-offset:2px}#secret{width:100%;min-width:0;background:transparent;border:0;color:var(--ink);padding:14px;font:13px ui-monospace,Consolas,monospace;outline:0}#secret[aria-invalid=true]{box-shadow:inset 0 -2px #bd4242}#reveal{border:0;border-radius:0;background:transparent;padding:9px;font-size:11px;color:var(--muted)}.hint{font-size:11px;color:var(--muted);margin:9px 0 17px}details{margin:20px 0}summary{font-size:12px;font-weight:650;cursor:pointer;color:var(--muted)}.settings{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:12px;margin-top:16px}.settings select{width:100%;border:1px solid var(--line);border-radius:7px;padding:8px;background:var(--paper);color:var(--ink);font-size:12px}.settings label{font-size:11px}.actions{display:flex;gap:10px;flex-wrap:wrap}.primary{background:var(--brand);border-color:var(--brand);color:var(--paper)}:root[data-theme=dark] .primary{color:#111b30}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .primary{color:#111b30}}.actions button{font-size:12px}.demo{padding:0;border:0;color:var(--brand);background:transparent;font-size:12px;margin-top:19px}.demo:after{content:' ↗'}.warning{font-size:11px;color:var(--muted);line-height:1.65;margin:15px 0 0}.result{padding:30px;text-align:center;display:flex;flex-direction:column;justify-content:center;align-items:center;background:linear-gradient(145deg,var(--paper),var(--code))}.result .section-label{align-self:flex-start}.code-box{padding:15px 0;width:100%}#code{font:600 clamp(34px,4vw,48px)/1.2 ui-monospace,Consolas,monospace;letter-spacing:3px;color:var(--brand);white-space:nowrap;direction:ltr;unicode-bidi:isolate;user-select:all}#copy{color:var(--brand);border-color:var(--line);font-size:12px;width:100%;max-width:245px;margin-top:22px;background:var(--paper)}.timer{display:flex;align-items:center;justify-content:space-between;gap:10px;width:100%;max-width:245px;color:var(--muted);font-size:11px;margin-top:21px}.timer strong{color:var(--green);font-variant-numeric:tabular-nums;direction:ltr}progress{display:block;width:100%;max-width:245px;height:4px;appearance:none;border:0;border-radius:4px;background:var(--line);margin-top:8px}progress::-webkit-progress-bar{background:var(--line);border-radius:4px}progress::-webkit-progress-value{background:var(--green);border-radius:4px}progress::-moz-progress-bar{background:var(--green)}.result-note{font-size:10px;color:var(--muted);min-height:17px;margin:12px 0 0}#status{font-size:12px;min-height:20px;color:var(--brand);margin:12px 0 0;max-width:350px}.privacy-note{display:flex;align-items:flex-start;gap:10px;font-size:11px;max-width:820px;margin:20px auto 45px;color:var(--muted)}.privacy-note svg{width:18px;min-width:18px;color:var(--green);margin-top:2px}.guide-top{display:flex;justify-content:space-between;align-items:center;gap:15px}.guide-top p{font-size:11px;color:var(--muted)}.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:17px 0 45px}.card{display:block;text-decoration:none;color:var(--ink);border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:23px;transition:transform .15s,border-color .15s}.card:hover{transform:translateY(-3px);border-color:var(--brand)}.card .card-icon{color:var(--brand);background:var(--soft);border-radius:8px;display:inline-grid;place-items:center;width:35px;height:35px;font-size:18px}.card h3{margin:15px 0 7px}.card p{color:var(--muted);font-size:12px;margin:0}.card .arrow{display:block;color:var(--brand);margin-top:18px;font-size:18px}.demo-notice{border:1px dashed var(--line);border-radius:9px;padding:11px 15px;font-size:11px;color:var(--muted);margin:0 0 45px}.prose{max-width:780px;margin:42px auto 60px;background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:38px}.prose h1{font-size:34px}.prose p{color:var(--muted);line-height:1.9}.prose .lead{font-size:19px;color:var(--ink)}.prose li{margin-bottom:10px}.sources{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;display:flex;gap:20px;font-size:12px}.back{font-size:12px}.diagram{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding:25px;background:var(--soft);border-radius:10px;font-family:ui-monospace,monospace;font-size:12px;color:var(--brand);direction:ltr}.diagram span{padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:var(--paper)}footer{border-top:1px solid var(--line);background:var(--paper);padding:28px 0}.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.footer-brand strong{font-size:16px}.footer-brand p{font-size:11px;color:var(--muted);margin:5px 0}.footer-links{display:flex;gap:16px;flex-wrap:wrap;align-items:center}.footer-links a{font-size:11px;color:var(--muted);text-decoration:none}.copyright{font-size:10px;color:var(--muted);margin:18px 0 0}.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}[hidden]{display:none!important}
@media(max-width:800px){.workspace{grid-template-columns:1fr}.entry{border-inline-end:0;border-bottom:1px solid var(--line)}.cards{grid-template-columns:1fr}.header-inner{gap:16px}nav{display:none}.preferences{margin-inline-start:auto}.hero{padding-top:35px}.hero h1{letter-spacing:-.8px}.shell{width:calc(100% - 32px)}.result{min-height:300px}#code{font-size:44px}.trust{gap:10px 18px}.prose{padding:23px}.guide-top p{display:none}.footer-links{gap:12px}.brand{font-size:20px}.preferences select{max-width:115px}.entry,.result{padding:24px}}@media(prefers-reduced-motion:reduce){.card{transition:none}}@media print{header,.preferences,footer,.entry,.actions,#copy{display:none}.workspace{display:block}.result{background:#fff;color:#111}.prose{border:0}body{background:white}}