:root{--bg:#f4f1ea;--paper:#fffdf8;--ink:#10141a;--muted:#626872;--line:#d8d0c4;--blue:#2154d8;--blue-soft:#edf2ff;--green:#08765a;--green-soft:#eaf7f1;--amber:#9a5a00;--amber-soft:#fff3d9;--red:#a03232;--red-soft:#fff0f0;--dark:#111827;--radius:18px;--shadow:0 20px 60px rgba(16,20,26,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.55}a{color:inherit}button,select{font:inherit}button{cursor:pointer}.shell{width:min(1180px,calc(100% - 40px));margin-inline:auto}.skip-link{position:absolute;left:-9999px;top:0;background:white;padding:10px;z-index:99}.skip-link:focus{left:10px}
.topbar{min-height:68px;display:flex;align-items:center;gap:28px;padding:0 max(20px,calc((100vw - 1180px)/2));border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(244,241,234,.94);backdrop-filter:blur(12px);z-index:20}.brand{font-weight:850;text-decoration:none;letter-spacing:-.03em}.topbar nav{display:flex;gap:20px;margin-right:auto}.topbar nav a{text-decoration:none;color:var(--muted);font-size:.92rem}.status-pill{font-size:.7rem;font-weight:850;letter-spacing:.09em;border:1px solid var(--line);border-radius:999px;padding:7px 10px}
.hero{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(340px,.72fr);gap:64px;align-items:center;padding-block:92px 82px}.eyebrow{font-size:.74rem;font-weight:850;letter-spacing:.14em;color:var(--blue);margin:0 0 16px}.eyebrow.light{color:#a7c2ff}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(3rem,6vw,6.2rem);line-height:.92;letter-spacing:-.065em;margin-bottom:28px;max-width:12ch}h2{font-size:clamp(2rem,3.5vw,3.6rem);line-height:1.02;letter-spacing:-.045em}h3{letter-spacing:-.025em}.lede{font-size:1.22rem;color:#363b43;max-width:720px}.hero-actions,.proof-actions,.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 18px;border-radius:999px;border:1px solid transparent;font-weight:780;text-decoration:none}.primary{background:var(--ink);color:white}.primary:hover{background:#2a3038}.secondary{border-color:var(--ink);background:transparent}.quiet{border-color:var(--line);background:transparent;color:var(--muted)}.trust-row{display:flex;gap:16px;flex-wrap:wrap;margin-top:26px;color:var(--muted);font-size:.86rem}
.preview{background:var(--dark);color:#edf4ff;border-radius:26px;padding:22px;box-shadow:var(--shadow);transform:rotate(.8deg)}.preview-head{display:flex;justify-content:space-between;color:#94a3b8;font:700 .72rem ui-monospace,monospace;text-transform:uppercase;letter-spacing:.07em}.dot{color:#8be0bf}.preview ol{list-style:none;padding:0;margin:26px 0 18px;border-top:1px solid #334155}.preview li{display:grid;grid-template-columns:32px 1fr auto;gap:10px;padding:14px 0;border-bottom:1px solid #334155;font:700 .8rem ui-monospace,monospace}.preview li span{color:#64748b}.preview em{font-style:normal;color:#cbd5e1}.preview .warn{color:#ffd089}.preview .good{color:#9ce4c7}.preview .blocked{color:#ffadad}.preview p{margin:0;color:#aab8c8;font:500 .8rem/1.55 ui-monospace,monospace}.preview strong{color:white}
.why-band{background:var(--dark);color:white;padding:68px 0}.why-grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid #334155;border-radius:22px;overflow:hidden}.why-grid article{padding:24px;border-right:1px solid #334155}.why-grid article:last-child{border-right:0}.why-grid span{font:700 .78rem ui-monospace,monospace;color:#8fa3bd}.why-grid h2{font-size:1.28rem;letter-spacing:-.025em;margin:16px 0 8px}.why-grid p{margin:0;color:#b8c2cf;font-size:.94rem}
.lab,.proof{padding-block:94px}.section-heading{display:grid;grid-template-columns:1.15fr .85fr;gap:60px;align-items:end;margin-bottom:40px}.section-heading h2{max-width:16ch;margin-bottom:0}.section-heading>p{color:var(--muted);font-size:1.04rem;margin-bottom:3px}.presets{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:22px}.preset{text-align:left;border:1px solid var(--line);background:rgba(255,255,255,.35);border-radius:14px;padding:14px}.preset b{display:block;margin-bottom:4px}.preset span{display:block;color:var(--muted);font-size:.84rem;line-height:1.35}.preset[aria-pressed="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink);background:var(--paper)}
.lab-grid{display:grid;grid-template-columns:minmax(300px,.72fr) minmax(0,1.28fr);gap:22px}.controls,.result{border:1px solid var(--line);border-radius:var(--radius);background:rgba(255,255,255,.45)}.controls{padding:22px;display:grid;gap:16px;align-content:start}.panel-title{font-size:.72rem;font-weight:850;letter-spacing:.12em;color:var(--muted);padding-bottom:7px;border-bottom:1px solid var(--line)}.controls label{display:grid;gap:5px}.controls label>span{font-weight:760}.controls small{color:var(--muted)}select{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:10px;background:var(--paper);color:var(--ink)}.validation{min-height:1.2rem;margin:0;color:var(--red);font-size:.9rem}
.result{min-height:590px;padding:28px;background:var(--paper)}.empty-state{display:grid;place-content:center;min-height:530px;max-width:520px;margin:auto;text-align:center}.empty-state h3{font-size:2rem;margin-bottom:10px}.empty-state p:last-child{color:var(--muted)}.result-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;padding-bottom:20px;border-bottom:1px solid var(--line)}.decision-label{font:.75rem ui-monospace,monospace;color:var(--muted);letter-spacing:.08em}.decision{font-size:2rem;margin:8px 0}.decision.verified{color:var(--green)}.decision.unknown{color:var(--amber)}.decision.failed{color:var(--red)}.result-head p{color:var(--muted);margin:0;max-width:560px}.badge{border-radius:999px;padding:8px 10px;font-size:.74rem;font-weight:850;white-space:nowrap;border:1px solid var(--line)}.badge.verified{background:var(--green-soft);color:var(--green);border-color:#b7dccc}.badge.unknown{background:var(--amber-soft);color:var(--amber);border-color:#ead29c}.badge.failed{background:var(--red-soft);color:var(--red);border-color:#e1b4b4}.safe-action{margin:20px 0;padding:16px 18px;border-left:4px solid var(--blue);background:var(--blue-soft);border-radius:0 12px 12px 0}.safe-action b{display:block;margin-bottom:4px}.comparison{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:20px}.comparison article{border:1px solid var(--line);border-radius:14px;padding:16px}.comparison h4{margin:0 0 6px}.comparison p{margin:0;color:var(--muted)}.comparison .guarded{background:#f1faf6;border-color:#abd3c2}
.trace{border-top:1px solid var(--line)}.trace-step{display:grid;grid-template-columns:26px 90px 92px 1fr;gap:10px;align-items:start;padding:12px 0;border-bottom:1px solid #e4ddd2;font-size:.86rem}.trace-step>span{font-family:ui-monospace,monospace;color:#8a8f96}.trace-step b{font-size:.78rem}.trace-step em{font-style:normal;text-transform:uppercase;font:750 .68rem ui-monospace,monospace}.trace-step p{margin:0;color:var(--muted)}.match,.complete,.verified,.bound{color:var(--green)}.mismatch,.failed,.blocked{color:var(--red)}.unknown,.hold,.incomplete{color:var(--amber)}.attempted{color:var(--blue)}details{margin-top:18px}summary{cursor:pointer;font-weight:800}pre{white-space:pre-wrap;word-break:break-word;background:var(--dark);color:#dce7f3;border-radius:14px;padding:16px;font-size:.76rem;overflow:auto}
.proof{border-top:1px solid var(--line)}.proof-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.proof-grid article{border-top:2px solid var(--ink);padding:17px 4px}.proof-grid span{font:700 .74rem ui-monospace,monospace;color:var(--blue)}.proof-grid h3{margin:13px 0 7px}.proof-grid p{color:var(--muted)}footer{border-top:1px solid var(--line);padding:28px 0}.footer-inner{display:flex;justify-content:space-between;gap:20px;align-items:center}.footer-inner div{display:grid}.footer-inner span{color:var(--muted);font-size:.84rem}.footer-inner a{font-weight:700}
@media(max-width:920px){.topbar nav{display:none}.status-pill{margin-left:auto}.hero{grid-template-columns:1fr;padding-block:68px 56px}.preview{transform:none}.why-grid{grid-template-columns:1fr 1fr}.why-grid article:nth-child(2){border-right:0}.why-grid article:nth-child(-n+2){border-bottom:1px solid #334155}.section-heading,.lab-grid{grid-template-columns:1fr}.presets{grid-template-columns:1fr 1fr}.proof-grid{grid-template-columns:1fr 1fr}}
@media(max-width:580px){.shell{width:min(100% - 26px,1180px)}.topbar{padding:0 13px;min-height:60px}.status-pill{display:none}.hero{padding-block:52px 44px;gap:34px}h1{font-size:clamp(2.7rem,14vw,4.2rem)}.lede{font-size:1.08rem}.hero-actions .button,.proof-actions .button{width:100%}.trust-row{display:grid;grid-template-columns:1fr 1fr;gap:7px}.why-grid,.presets,.comparison,.proof-grid{grid-template-columns:1fr}.why-grid article{border-right:0!important;border-bottom:1px solid #334155}.why-grid article:last-child{border-bottom:0}.lab,.proof{padding-block:66px}.section-heading{gap:16px}.section-heading h2{font-size:2.25rem}.result{padding:18px}.result-head{display:grid}.badge{width:max-content}.trace-step{grid-template-columns:24px 78px 76px 1fr;font-size:.8rem}.footer-inner{display:grid}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation:none!important;transition:none!important}}