:root{--ink:#0f2740;--ink2:#1c3d5e;--paper:#f1f4f8;--card:#ffffff;--gold:#c8922b;--ok:#1c7d6b;--bad:#b23b3b;--line:#d3dce6;--muted:#5b6b7b;--danger:#a3271f}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:linear-gradient(180deg,#eef2f7,var(--paper)) fixed,repeating-linear-gradient(0deg,transparent 0 31px,rgba(15,39,64,.03) 31px 32px) fixed;color:var(--ink);font-family:Space Grotesk,ui-sans-serif,system-ui,Apple SD Gothic Neo,Malgun Gothic,sans-serif;-webkit-font-smoothing:antialiased}.page{max-width:760px;margin:0 auto;padding:0 20px 64px}.top{display:flex;align-items:baseline;gap:14px;padding:26px 0 18px;border-bottom:2px solid var(--ink)}.brand{font-size:26px;font-weight:700;letter-spacing:-.5px;color:var(--ink)}.brand:after{content:"";display:inline-block;width:8px;height:8px;margin-left:6px;border-radius:50%;background:var(--gold);vertical-align:middle}.tag{font-size:12.5px;color:var(--muted)}.hero{padding:40px 0 8px}.hero h1{font-size:34px;line-height:1.18;font-weight:700;letter-spacing:-.6px;margin:0 0 18px}.hero .mark{color:var(--bad);border-bottom:3px solid var(--bad);padding-bottom:1px}.lede{font-size:15px;line-height:1.7;color:var(--ink2);max-width:64ch;margin:0 0 30px}.domain-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.domain-card{display:flex;flex-direction:column;gap:6px;text-align:left;cursor:pointer;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--ink);border-radius:3px;padding:14px 15px;font:inherit;color:var(--ink);transition:border-color .12s,transform .12s}.domain-card:hover{border-left-color:var(--gold);transform:translateY(-1px)}.dc-title{font-size:14.5px;font-weight:500;line-height:1.35}.dc-meta{font-family:IBM Plex Mono,monospace;font-size:11.5px;color:var(--muted)}.crumbs{display:flex;align-items:center;gap:12px;padding:22px 0 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6px}.g-L3{color:var(--danger);border-color:var(--danger)}.fb-desc{color:var(--muted)}.submit-bar{display:flex;align-items:center;gap:14px;margin-top:20px;flex-wrap:wrap}.count{font-family:IBM Plex Mono,monospace;font-size:13px;color:var(--muted)}.btn{background:var(--ink);color:#fff;border:0;border-radius:3px;padding:11px 22px;font:inherit;font-size:15px;cursor:pointer}.btn:hover{background:var(--ink2)}.btn:disabled{opacity:.5;cursor:default}.btn.ghost{background:none;color:var(--ink2);border:1px solid var(--line)}.hint{font-size:12px;color:var(--muted)}.result{background:var(--card);border:1px solid var(--line);border-top:3px solid var(--gold);border-radius:4px;padding:20px;margin:6px 0 4px}.result-head{display:flex;gap:24px;align-items:center;flex-wrap:wrap}.gauge{flex:0 0 auto}.gauge-track{fill:none;stroke:var(--line);stroke-width:10}.gauge-fill{fill:none;stroke:var(--gold);stroke-width:10;stroke-linecap:round;transition:stroke-dashoffset 1s 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