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var(--line);border-radius:var(--radius);color:var(--text);flex-direction:column;justify-content:space-between;padding:20px;text-decoration:none;transition:border-color .15s,box-shadow .15s;display:flex}.tool-card:hover{border-color:var(--accent);box-shadow:0 4px 14px #117a721f}.tool-card h3{color:var(--accent-strong);margin:0 0 8px;font-size:1.25rem}.tool-card-problem{color:var(--text);margin:0 0 6px;font-size:.95rem;font-weight:600}.tool-card-outputs{color:var(--muted);flex:1;margin:0 0 16px;font-size:.9rem}.tool-card-action{color:var(--accent);align-items:center;gap:4px;font-size:.95rem;font-weight:700;display:inline-flex}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);margin:20px 0;padding:6px 22px 18px}.steps-grid{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin:16px 0;display:grid}.step-card{border:1px solid var(--line);background:#fafcfb;border-radius:8px;padding:14px}.step-num{color:var(--accent);margin-bottom:4px;font-size:1.1rem;font-weight:800;display:inline-block}.prose{max-width:72ch}.prose pre,.prose code{font-family:ui-monospace,Cascadia Mono,Consolas,monospace;font-size:.9em}.prose pre{background:#eef2f4;border-radius:8px;padding:12px;overflow-x:auto}@media (width<=640px){.layout{padding:10px 12px 0}.header-inner{min-height:48px;padding:4px 14px}main>h1{margin:6px 0 4px;font-size:1.6rem}.lead{margin:2px 0 4px;font-size:.96rem}.scenario-tabs{gap:6px;margin:8px 0}.compare-nav{margin:6px 0}.tool-form,.tool-top{margin:8px 0;padding:10px 12px}.hint{margin:2px 0 4px;font-size:.84rem;line-height:1.35}.tab{min-height:38px;padding:4px 12px}.btn-row .btn{flex:auto}.card-value{font-size:1.25rem}.card-featured .card-value{font-size:1.45rem}}@media 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.15s;display:inline-flex}.btn-unit:hover{background:#0000000d}.btn-unit.active{background:var(--primary);color:#fff;font-weight:700}.unit-equiv{color:var(--muted);margin-left:8px;font-size:.85rem;font-weight:400}.compare-badge{color:var(--muted);margin-top:2px;font-size:.78rem;font-weight:400;display:block}.compare-row-diff{background:#eab3080f}.diff-tag{color:#b45309;margin-left:4px;font-size:.75rem;font-weight:600;display:inline-block}