:root{--ink:#0e0f0c;--green:#9fe870;--deep:#163300;--mint:#e2f6d5;--paper:#f7f7f4;--line:rgba(14,15,12,.15);--muted:#5d625b;--danger:#a9232b;--warning:#805d00;--radius:28px;--orange:#f7931a;--blue:#1a73e8;--orange-light:#fef3e2;--blue-light:#e8f0fe;--orange-text:#b36500;--blue-text:#1557b0}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;font-feature-settings:"calt";line-height:1.5}.nav,main,footer{width:min(1120px,calc(100% - 40px));margin-inline:auto}.nav{height:80px;display:flex;align-items:center;justify-content:space-between}.brand{color:var(--ink);text-decoration:none;font-size:20px;font-weight:850;letter-spacing:-.04em}.brand span{display:inline-grid;place-items:center;background:var(--green);width:34px;height:34px;border-radius:50%;margin-right:8px}.experiment,.pill{font-size:13px;font-weight:750;border:1px solid var(--line);border-radius:999px;padding:7px 12px}.hero{padding:76px 0 80px;border-bottom:1px solid var(--line)}.eyebrow{font-size:12px;font-weight:850;letter-spacing:.13em;color:var(--deep);margin:0 0 18px}.hero h1{font-size:clamp(54px,9vw,104px);line-height:.9;letter-spacing:-.075em;margin:0;max-width:950px;font-weight:900}.hero h1 em{font-style:normal;color:var(--deep)}.lede{font-size:clamp(18px,2.2vw,25px);max-width:710px;margin:32px 0;color:#343832}.audit-form{margin-top:42px;max-width:920px}.audit-form label{display:block;font-weight:750;margin-bottom:10px}.input-row{display:grid;grid-template-columns:1fr auto;padding:7px;background:#fff;border:1px solid var(--line);border-radius:18px}.input-row:focus-within{outline:3px solid rgba(159,232,112,.55);border-color:var(--deep)}input{min-width:0;border:0;background:transparent;padding:13px 14px;font:inherit;font-size:17px;outline:none}button,.primary-button{font:inherit;font-weight:750;cursor:pointer}.input-row button,.primary-button{border:0;background:var(--green);color:var(--deep);border-radius:13px;padding:14px 22px;text-decoration:none;transition:transform .14s ease}.input-row button:hover,.primary-button:hover{transform:translateY(-1px)}.input-row button:disabled{opacity:.5;cursor:not-allowed;transform:none}.form-note{font-size:14px;color:var(--muted);margin-top:10px}

.rail-selector{margin-top:20px}.rail-selector label{display:block;font-weight:750;margin-bottom:10px}.rail-options{display:flex;gap:10px;flex-wrap:wrap}.rail-option{display:inline-flex;align-items:center;gap:8px;padding:12px 20px;border:2px solid var(--line);border-radius:999px;background:#fff;font-weight:600;font-size:14px;cursor:pointer;transition:all .14s ease}.rail-option:hover{border-color:var(--deep);transform:translateY(-1px)}.rail-option.selected{border-color:var(--green);background:var(--mint);color:var(--deep)}.rail-option[data-rail="btc-onchain"].selected{border-color:var(--orange);background:var(--orange-light);color:var(--orange-text)}.rail-option[data-rail="usdc-base"].selected{border-color:var(--blue);background:var(--blue-light);color:var(--blue-text)}

.message{margin-top:18px;padding:16px 20px;border-radius:14px;font-weight:600}.message:not([hidden]){background:#fff3e0;border:1px solid var(--orange);color:var(--orange-text)}.results{padding-top:42px}.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.pill{background:#fff}.pill.paid{background:var(--mint);border-color:var(--green);color:var(--deep)}.fact-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:16px;margin-bottom:32px}.fact{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px}.fact span{display:block;font-size:13px;color:var(--muted);margin-bottom:4px}.fact strong{font-size:22px;font-weight:750}.finding-list{display:grid;gap:16px}.finding{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start}.finding .severity{font-size:11px;font-weight:800;padding:4px 10px;border-radius:999px;text-transform:uppercase;white-space:nowrap}.finding .severity.high{background:#fee;border-color:var(--danger);color:var(--danger)}.finding .severity.medium{background:#ffecc7;border-color:var(--warning);color:var(--warning)}.finding .severity.low{background:var(--mint);border-color:var(--green);color:var(--deep)}.finding h3{margin:0 0 6px;font-size:16px;font-weight:750}.finding p{margin:0;color:var(--muted);font-size:14px}.finding p.fix{color:var(--deep);font-weight:600}.finding.detailed .severity{font-size:12px}

.payment-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:32px;margin-top:32px}.payment-card > div > p.eyebrow{margin:0 0 8px}.payment-card > div > h2{margin:0 0 12px;font-size:24px}.payment-card > div > p{margin:0 0 24px;color:var(--muted)}.payment-method{margin-top:24px}.address-wrap,.invoice-wrap{position:relative;background:#f8f8f8;border:1px solid var(--line);border-radius:12px;padding:16px;margin:16px 0}.address-wrap code,.invoice-wrap code{font-family:'SF Mono',Monaco,monospace;font-size:13px;word-break:break-all;display:block}.copy-button{position:absolute;top:8px;right:8px;background:var(--ink);color:#fff;border:0;padding:6px 12px;border-radius:6px;font-size:12px;font-weight:600;cursor:pointer}.copy-button:hover{background:#333}.primary-button{display:inline-block;width:auto}.payment-note{font-size:13px;color:var(--muted);margin-top:12px}.payment-state{margin-top:16px;padding:12px 16px;background:#f8f8f8;border:1px solid var(--line);border-radius:10px;font-size:14px;color:var(--muted)}

.score-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:16px;margin-bottom:32px}.score{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;text-align:center}.score span{display:block;font-size:13px;color:var(--muted);margin-bottom:8px}.score strong{font-size:32px;font-weight:800;color:var(--deep)}

.how{margin-top:80px;padding-top:48px;border-top:1px solid var(--line)}.how h2{margin:0 0 32px;font-size:32px}.three{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}.three article{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px}.three span{display:inline-block;background:var(--green);color:var(--deep);width:36px;height:36px;border-radius:50%;text-align:center;line-height:36px;font-weight:800;margin-bottom:16px}.three h3{margin:0 0 8px;font-size:18px}.three p{margin:0;color:var(--muted)}.terms{margin-top:80px;padding-top:48px;border-top:1px solid var(--line)}.terms h2{margin:0 0 24px}.terms-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px;font-size:14px;color:var(--muted)}.terms-grid p{margin:0 0 16px}footer{display:flex;align-items:center;justify-content:space-between;padding:32px 0;font-size:14px;color:var(--muted)}footer a{color:var(--deep);text-decoration:none}footer a:hover{text-decoration:underline}

@media (max-width: 720px){.input-row{grid-template-columns:1fr;grid-template-rows:auto auto}.input-row button{border-radius:12px;margin-top:8px}.finding{grid-template-columns:1fr;gap:8px}.rail-options{flex-direction:column}.rail-option{width:100%;justify-content:center}}