:root{--bg:#f4f6f9;--surface:#fff;--text:#101418;--text-soft:#33404d;--brand:#0f3a5f;--brand-2:#155a8a;--brand-text:#fff;--accent:#f59e0b;--line:#8b99a9;--line-soft:#c3ccd6;--link:#0b4d8c;--ok-bg:#ecfdf3;--ok-border:#14532d;--ok-text:#14532d;--warn-bg:#fffbeb;--warn-border:#92400e;--warn-text:#6b3405;--danger-bg:#fef2f2;--danger-border:#991b1b;--danger-text:#7f1d1d;--radius:14px;--tap:48px;--gap:8px;--shadow:0 1px 2px #0f1e3214, 0 2px 8px #0f1e3212;--acc-hydro:#0369a1;--acc-hydro-tint:#e3f2fb;--acc-vvs:#c2410c;--acc-vvs-tint:#feede3;--acc-struct:#475569;--acc-struct-tint:#e9edf2;--acc-elec:#b45309;--acc-elec-tint:#fdf1dc;--acc-vib:#6d28d9;--acc-vib-tint:#f0e9fc;--result-ink:#0f3a5f}[data-theme=dark]{--bg:#0b1626;--surface:#121f33;--text:#f2f6fa;--text-soft:#b9c6d3;--brand:#0d1b2e;--brand-2:#123a5c;--brand-text:#f2f6fa;--accent:#fbbf24;--line:#5d7590;--line-soft:#33465c;--link:#7db8e8;--ok-bg:#0c2418;--ok-border:#4ade80;--ok-text:#bbf7d0;--warn-bg:#2a1d05;--warn-border:#fbbf24;--warn-text:#fde68a;--danger-bg:#2a0d0d;--danger-border:#f87171;--danger-text:#fecaca;--shadow:0 1px 2px #00000080, 0 2px 10px #00000059;--acc-hydro:#4db6e8;--acc-hydro-tint:#12293c;--acc-vvs:#f0824d;--acc-vvs-tint:#34200f;--acc-struct:#94a7bd;--acc-struct-tint:#1d2836;--acc-elec:#eab308;--acc-elec-tint:#2c2208;--acc-vib:#b794f6;--acc-vib-tint:#251a3d;--result-ink:#8ec8f0}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;background:var(--bg);--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}html[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}::placeholder{color:var(--text-soft);opacity:1}body{background:var(--bg);color:var(--text);margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Noto Sans,Ubuntu,Cantarell,Helvetica Neue,sans-serif;font-size:17.5px;line-height:1.5}.app-header{background:linear-gradient(120deg, var(--brand) 0%, var(--brand-2) 100%);color:var(--brand-text);padding:env(safe-area-inset-top) 0 0;border-bottom:3px solid var(--accent)}.app-header 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