:root{--bg:#080b0f;--panel:#111821;--panel2:#17212d;--line:#293544;--text:#f5f7fa;--muted:#9ca9b7;--orange:#ff9f1c;--orange2:#ffb84d;--cyan:#65d7ee;--green:#4ade80;--red:#fb7185;--radius:20px;--tap:48px;--shadow:0 18px 50px rgba(0,0,0,.28)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:radial-gradient(circle at 75% 0,#162435 0,transparent 32%),var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}button,a{touch-action:manipulation}a{color:inherit}.wrap{width:min(1180px,calc(100% - 36px));margin-inline:auto}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:26px;padding:14px max(18px,calc((100vw - 1180px)/2));background:rgba(8,11,15,.9);border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:blur(18px)}.brand{text-decoration:none;font-weight:950;letter-spacing:.12em;font-size:1.12rem;white-space:nowrap}.brand span,footer span{color:var(--orange)}.brand em{font-style:normal;font-size:.64rem;color:var(--muted);letter-spacing:.04em}.topbar nav{display:flex;gap:22px;margin-left:auto}.topbar nav 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14px;margin-top:12px;border-radius:8px}.formula{margin-top:12px;color:#cbd5e1}.formula ol{padding-left:20px}.good{color:var(--green)}.err{color:var(--red)}.badge{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:4px 8px;font-size:.66rem;font-weight:900}.visual-section{display:grid;grid-template-columns:.7fr 1.3fr;gap:28px;align-items:center}canvas{display:block;width:100%;height:min(52vw,440px);min-height:280px;background:#0b1016;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}.current-card{border:1px solid #76501f;background:linear-gradient(135deg,#21170b,#111821);border-radius:var(--radius);padding:24px;font-size:1.25rem}.current-card b{font-size:1.75rem;text-transform:capitalize}.history-head{display:flex;align-items:center;justify-content:space-between;margin-top:24px}.text-button{min-height:36px;border:0;color:var(--muted)}.history-list{display:grid;gap:8px}.history-item,.jobrow,.fitrow{display:flex;justify-content:space-between;gap:12px;align-items:center;border:1px solid var(--line);border-radius:12px;background:#0c1218;padding:13px}.history-item span,.jobrow span,.fitrow span{display:block}.local-badge{color:var(--green)}hr{border:0;border-top:1px solid var(--line);margin:22px 0}.file-button input{display:none}.danger-button{color:var(--red);border-color:#66303b}.mini{min-height:36px;padding:0 11px;margin-left:5px}.mini.danger{color:var(--red)}.qa-section{display:grid;grid-template-columns:.7fr 1.3fr;gap:28px;align-items:start}.qa-summary{padding:10px;border:1px solid var(--green);border-radius:10px;margin:14px 0}.badborder{border-color:var(--red)}.qa-line{padding:5px 0}pre{white-space:pre-wrap;color:var(--muted);font:13px/1.6 ui-monospace,monospace}footer{border-top:1px solid var(--line);padding:42px 0 110px;color:var(--muted)}footer b{color:#fff;letter-spacing:.12em}.mobile-dock{display:none}#printArea{display:none}
body.field-mode{--tap:58px;font-size:18px}body.field-mode .muted{color:#c4ced8}body.field-mode input,body.field-mode textarea,body.field-mode select{font-size:1.15rem;border-width:2px}body.field-mode .result{font-size:1.08rem}body.field-mode .answer-main b{font-size:2.1rem}
@media(max-width:800px){.wrap{width:min(100% - 24px,680px)}.topbar{padding:11px 12px}.topbar nav{display:none}.field-toggle{margin-left:auto;min-height:42px;padding-inline:12px}.hero{grid-template-columns:1fr;gap:26px;padding-block:46px;min-height:0}.hero h1{font-size:clamp(3rem,16vw,5.5rem)}.hero-card{padding:22px}.section{padding-block:44px}.section-title{align-items:start;flex-direction:column}.sync{text-align:left}.tool-tabs{top:65px}.tool-grid,.split,.visual-section,.qa-section{grid-template-columns:1fr}.card{padding:18px}.form-grid{grid-template-columns:1fr 1fr}.visual-section>div{order:2}.visual-section canvas{order:1}.mobile-dock{position:fixed;z-index:30;bottom:0;left:0;right:0;display:grid;grid-template-columns:repeat(4,1fr);padding:8px max(8px,env(safe-area-inset-right)) calc(8px + env(safe-area-inset-bottom)) max(8px,env(safe-area-inset-left));background:rgba(8,11,15,.95);border-top:1px solid var(--line);backdrop-filter:blur(18px)}.mobile-dock a{text-decoration:none;text-align:center;padding:10px 4px;color:#d6dee7;font-size:.78rem;font-weight:850}footer{padding-bottom:130px}}
@media(max-width:430px){.hero h1{font-size:14.5vw}.form-grid{grid-template-columns:1fr}.answer-grid{grid-template-columns:1fr}.answer-grid .answer-main{grid-column:auto}.actions>*{flex:1}.history-item,.jobrow,.fitrow{align-items:flex-start;flex-direction:column}.topbar .brand{font-size:1rem}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
@media print{body>*:not(#printArea){display:none!important}#printArea{display:block!important;color:#000;background:#fff;font:12pt/1.4 Arial,sans-serif;padding:20px}#printArea table{width:100%;border-collapse:collapse;margin:20px 0}#printArea td{border:1px solid #333;padding:8px}.print-final{font-size:18pt;font-weight:bold}}