:root{--bg:#f6f9f7;--bg-2:#eef4f1;--surface:#fff;--teal:#0d9488;--teal-600:#0f766e;--teal-700:#115e59;--teal-900:#06302c;--green:#2dd4bf;--green-soft:#99f6e4;--tint:#e8f6f1;--ink:#0b1f1c;--ink-2:#14302b;--muted:#5b6b67;--muted-2:#8a9893;--line:#e4ece9;--danger:#dc2626;--radius:22px;--radius-sm:14px;--shadow-sm:0 1px 2px rgba(11,31,28,.05);--shadow:0 2px 8px rgba(11,31,28,.05),0 12px 36px rgba(13,148,136,.07);--shadow-lg:0 20px 60px rgba(13,148,136,.16);--max:1160px;--ease:cubic-bezier(0.22,1,0.36,1)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Inter,Segoe UI,Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased;line-height:1.55;letter-spacing:-.011em}a{color:inherit;text-decoration:none}::selection{background:var(--green-soft)}.container{max-width:var(--max);margin:0 auto;padding:0 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var(--line);color:var(--ink)}.calc-shell,.grid-2,.grid-3,.grid-4,.stats,.tool-list{grid-template-columns:1fr}.calc-nav{position:static;display:flex;gap:8px;overflow-x:auto;padding-bottom:8px}.calc-nav .group-label{display:none}.calc-nav button{white-space:nowrap;width:auto}.calc-main{grid-template-columns:1fr}.result-panel{position:static}}