:root{--bg:#f4fafc;--card:#fff;--ink:#0f2733;--ink-muted:#52707c;--ink-faint:#87a2ac;--line:#dcebf1;--line-strong:#bfd8e2;--accent:#0b8fb4;--accent-bright:#05b6e6;--accent-hover:#086f8c;--accent-soft:#e3f6fc;--accent-ring:rgba(5,182,230,.3);--danger:#b3372f;--danger-soft:#faeceb;--success:#2e7d4f;--warn:#a8690b;--radius:10px;--radius-sm:7px;--sp-1:4px;--sp-2:8px;--sp-3:12px;--sp-4:16px;--sp-5:24px;--sp-6:32px;--sp-7:48px;--shadow-card:0 1px 2px rgba(15,39,51,.05),0 4px 16px rgba(15,39,51,.06);--shadow-pop:0 8px 32px rgba(15,39,51,.18);--font-sans:Manrope,Avenir Next,Segoe UI Variable,Segoe UI,system-ui,sans-serif;--font-mono:JetBrains Mono,ui-monospace,Cascadia 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a:hover{border-color:var(--accent);color:var(--accent)}.layout{display:grid;grid-template-columns:minmax(0,1fr) 400px;grid-gap:var(--sp-5);gap:var(--sp-5);align-items:start}.form-col{display:flex;flex-direction:column;gap:var(--sp-5);min-width:0}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-card);scroll-margin-top:76px}.card__head{padding:var(--sp-4) var(--sp-5);border-bottom:1px solid var(--line)}.card__head h2{font-size:16px;letter-spacing:-.01em}.card__head p{margin:3px 0 0;font-size:13px;color:var(--ink-muted)}.card__body{padding:var(--sp-5);display:flex;flex-direction:column;gap:var(--sp-5)}.frow{display:grid;grid-template-columns:1fr 1fr;grid-gap:var(--sp-4) var(--sp-5);gap:var(--sp-4) var(--sp-5)}.frow--3{grid-template-columns:1fr 1fr 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var(--line);font-size:12px;color:var(--ink-faint)}.savebar{position:fixed;left:50%;bottom:18px;transform:translate(-50%,90px);transition:transform .25s cubic-bezier(.2,.9,.3,1.2);z-index:80;display:flex;align-items:center;gap:var(--sp-4);background:var(--ink);color:var(--bg);border-radius:999px;padding:9px 10px 9px 20px;box-shadow:var(--shadow-pop)}.savebar.is-visible{transform:translate(-50%)}.savebar__msg{font-size:13.5px;font-weight:700}.savebar__msg small{font-weight:500;opacity:.7;font-feature-settings:"tnum";font-variant-numeric:tabular-nums}.savebar__msg.is-error{color:var(--danger)}.btn{border:none;border-radius:999px;font-weight:700;font-size:13.5px;padding:8px 18px;cursor:pointer;transition:background .15s}.btn--primary{background:var(--accent);color:#fff}.btn--primary:hover{background:var(--accent-hover)}.btn--primary:disabled{opacity:.45;cursor:not-allowed}.btn--ghost{background:transparent;color:inherit;opacity:.75}.btn--ghost:hover{opacity:1}.spinner{width:14px;height:14px;border:2px solid hsla(0,0%,100%,.35);border-top-color:#fff;border-radius:50%;display:inline-block;vertical-align:-2px;margin-right:7px;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.toast{position:fixed;right:22px;bottom:22px;z-index:90;background:var(--card);border:1px solid var(--line);border-left:4px solid var(--success);border-radius:var(--radius-sm);box-shadow:var(--shadow-pop);padding:12px 18px;font-size:13.5px;font-weight:600;transform:translateY(90px);opacity:0;transition:all .3s}.toast.is-visible{transform:none;opacity:1}.toast small{display:block;font-weight:500;color:var(--ink-muted);margin-top:2px}@media(max-width:1080px){.layout{grid-template-columns:1fr}.preview-col{position:static;order:-1}.preview-stage{height:480px}}@media(max-width:640px){.topnav{display:none}.frow,.frow--3,.optcards,.togglegrid{grid-template-columns:1fr}.page{padding:var(--sp-4) var(--sp-4) 120px}}