.calc-card-simple{background:var(--bg-2);border:1px solid var(--line);border-radius:16px;padding:32px 36px 36px;box-shadow:0 1px 3px #0000000a}.calc-header-simple{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:24px}.calc-step{font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--amber-2);font-weight:600;font-family:Geist Mono,monospace;margin-bottom:4px}.calc-h2{font-family:"Instrument Serif",serif;font-size:32px;line-height:1.1;margin:0;font-weight:400;letter-spacing:-.01em;color:var(--ink)}.unit-toggle{display:inline-flex;background:var(--bg-3);border:1px solid var(--line);border-radius:999px;padding:4px}.unit-toggle button{background:transparent;border:none;padding:8px 16px;border-radius:999px;font:inherit;font-size:13px;font-weight:500;color:var(--muted);cursor:pointer;transition:all .15s}.unit-toggle button.active{background:var(--bg-2);color:var(--ink);box-shadow:0 1px 2px #0000000f}.calc-step-divider{height:1px;background:var(--line);margin:36px -36px}.calc-step-head{margin-bottom:24px}.shape-picker{display:flex;flex-wrap:wrap;gap:10px}.shape-btn{flex:1 1 0;min-width:140px;display:flex;flex-direction:row;align-items:center;gap:12px;padding:12px 14px;background:var(--bg-3);border:2px solid var(--line);border-radius:10px;cursor:pointer;font:inherit;color:var(--muted);transition:all .15s;text-align:left}.shape-btn:hover{border-color:var(--muted-2);color:var(--ink-2)}.shape-btn.active{border-color:var(--amber);background:var(--amber-soft);color:var(--ink)}.shape-btn svg{flex:0 0 auto}.shape-btn>div.shape-text{display:flex;flex-direction:column;min-width:0}.shape-label{font-size:14px;font-weight:600;color:var(--ink);line-height:1.2}.shape-btn:not(.active) .shape-label{color:var(--ink-2)}.shape-desc{font-size:11px;color:var(--muted);line-height:1.3}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px 24px}.big-field{display:flex;flex-direction:column;gap:2px}.big-label{font-size:14px;font-weight:600;color:var(--ink)}.big-hint{font-size:12px;color:var(--muted);margin-bottom:4px}.big-input-wrap{display:flex;align-items:stretch;background:var(--bg-3);border:1px solid var(--line);border-radius:8px;transition:border-color .12s,box-shadow .12s;overflow:hidden;max-width:280px}.big-input-wrap:focus-within{border-color:var(--amber);box-shadow:0 0 0 3px var(--amber-soft)}.big-input-wrap input{flex:1;min-width:0;background:transparent;border:none;outline:none;padding:9px 12px;font:inherit;font-size:15px;font-weight:500;color:var(--ink);font-family:Geist,sans-serif}.big-input-wrap input::-webkit-outer-spin-button,.big-input-wrap input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.big-suffix{display:flex;align-items:center;padding:0 12px;background:var(--bg-2);border-left:1px solid var(--line);font-size:13px;font-weight:500;color:var(--muted);font-family:Geist Mono,monospace}.stepper{display:flex;background:var(--bg-3);border:1px solid var(--line);border-radius:8px;overflow:hidden;max-width:180px}.stepper button{width:38px;background:var(--bg-2);border:none;cursor:pointer;font:inherit;font-size:16px;font-weight:500;color:var(--ink);transition:background .12s}.stepper button:hover{background:var(--line-soft)}.stepper button:first-child{border-right:1px solid var(--line)}.stepper button:last-child{border-left:1px solid var(--line)}.stepper input{flex:1;min-width:0;background:transparent;border:none;outline:none;text-align:center;padding:9px 6px;font:inherit;font-size:15px;font-weight:500;color:var(--ink);font-family:Geist,sans-serif}.stepper input::-webkit-outer-spin-button,.stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}.result-friendly{background:linear-gradient(180deg,var(--amber-soft),transparent);border:1px solid var(--line);border-radius:14px;padding:32px}.result-friendly.empty{text-align:center;padding:40px;color:var(--muted);font-size:16px;background:var(--bg-3)}.result-headline{text-align:center;margin-bottom:28px}.result-eyebrow{font-size:13px;color:var(--muted);margin-bottom:8px}.result-big{display:flex;flex-direction:column;align-items:center;gap:6px}.result-num{font-family:"Instrument Serif",serif;font-size:80px;line-height:.95;letter-spacing:-.025em;color:var(--ink);font-weight:400;display:block}.result-unit{font-size:22px;color:var(--muted-2);font-family:"Instrument Serif",serif;font-style:italic;display:block}.result-also{margin-top:10px;font-size:14px;color:var(--muted)}.result-also strong{color:var(--ink-2);font-weight:500}.result-cards{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:22px}.result-card{flex:1 1 0;min-width:140px;display:flex;align-items:center;gap:12px;background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:14px 16px;text-align:left}.rc-icon{font-size:22px;flex:0 0 auto}.rc-text{display:flex;flex-direction:column;min-width:0}.rc-num{font-family:"Instrument Serif",serif;font-size:24px;line-height:1.05;color:var(--ink)}.rc-label{font-size:13px;font-weight:600;color:var(--ink-2)}.rc-sub{font-size:11px;color:var(--muted);margin-top:2px}.result-details{background:var(--bg-2);border:1px solid var(--line-soft);border-radius:10px;padding:14px 18px;margin-bottom:16px}.result-details summary{cursor:pointer;font-size:14px;font-weight:500;color:var(--ink-2);list-style:none}.result-details summary::-webkit-details-marker{display:none}.result-details summary:before{content:"▸ ";color:var(--amber-2);transition:transform .2s;display:inline-block;margin-right:4px}.result-details[open] summary:before{content:"▾ "}.rd-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 24px;margin-top:14px;padding-top:14px;border-top:1px solid var(--line-soft);font-size:13px}.rd-grid>div{display:flex;justify-content:space-between;padding:6px 0;font-family:Geist Mono,monospace}.rd-grid>div span{color:var(--muted);font-family:Geist,sans-serif}.rd-grid>div strong{color:var(--ink);font-weight:500}.result-tip{margin:0;padding:14px 18px;background:var(--bg-2);border:1px solid var(--line-soft);border-radius:10px;font-size:14px;color:var(--muted);line-height:1.5}.result-tip strong{color:var(--ink-2)}.calc-two-col{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}.calc-col{min-width:0}.calc-two-col .form-grid{grid-template-columns:1fr}.calc-two-col .result-cards{grid-template-columns:1fr;gap:10px}.calc-two-col .rd-grid{grid-template-columns:1fr}.calc-two-col .result-num{font-size:56px}@media (max-width: 860px){.calc-two-col{grid-template-columns:1fr;gap:24px}.calc-two-col .result-cards{grid-template-columns:1fr}}@media (max-width: 720px){.calc-card-simple{padding:24px 20px}.calc-step-divider{margin:28px -20px}.shape-picker{grid-template-columns:repeat(2,1fr)}.form-grid,.result-cards{grid-template-columns:1fr}.result-num{font-size:56px}.calc-h2{font-size:26px}.rd-grid{grid-template-columns:1fr}}