:root{color-scheme:dark;--bg:#0a0d13;--panel:#111722;--panel2:#171f2c;--line:#2a3545;--text:#f4f6f8;--muted:#9aa6b6;--accent:#d8dee7;--accentText:#0c1118}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.55 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,select{font:inherit}button,summary,select{cursor:pointer}button{color:inherit}button:focus-visible,summary:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button{min-height:44px;border:1px solid var(--line);background:transparent;border-radius:10px}button:hover{background:var(--panel2)}header{max-width:1220px;margin:auto;padding:24px 40px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{color:var(--text);text-decoration:none;display:flex;gap:12px;align-items:center;font-weight:750;letter-spacing:3px}.brand img{width:54px;height:54px;border-radius:50%;object-fit:cover}.brand small{display:block;color:var(--muted);font-size:9px;letter-spacing:4px}.header-note,.eyebrow{font-size:10px;font-weight:650;letter-spacing:2px;color:var(--muted)}main{max-width:1140px;margin:auto;padding:50px 40px 0}.intro{margin-bottom:36px}h1{font-size:clamp(30px,4vw,46px);line-height:1.16;letter-spacing:-1.6px;margin:15px 0}h1 span{color:var(--muted);font-weight:450}.intro p{color:var(--muted)}h2{font-size:19px;font-weight:600;margin:0}.workspace{display:grid;grid-template-columns:1.15fr 1fr;gap:24px;align-items:start}.entry{padding:28px;background:var(--panel);border:1px solid var(--line);border-radius:20px}.section-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.units,.tabs{display:flex;padding:4px;border:1px solid var(--line);border-radius:12px;gap:4px}.units button{border:0;min-width:48px;min-height:36px}.units button[aria-pressed=true],.tabs button[aria-pressed=true]{background:var(--accent);color:var(--accentText);font-weight:650}.exercise{display:block;font-size:12px;color:var(--muted);margin-bottom:24px}.exercise span{font-size:10px;margin-left:5px}input,select{display:block;width:100%;min-width:0;background:var(--bg);border:1px solid var(--line);color:var(--text);border-radius:10px;padding:12px;min-height:48px}.exercise input{margin-top:7px}.series-item{border-top:1px solid var(--line);padding:22px 0 4px}.series-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;font-size:12px;font-weight:650;letter-spacing:1px}.series-title button{border:0;color:var(--muted);font-size:12px;letter-spacing:0;padding:0 8px;min-height:32px}.fields{display:grid;grid-template-columns:1.35fr 1fr 1fr;gap:12px}.fields label{font-size:12px;color:var(--muted);display:block}.stepper{display:grid;grid-template-columns:28px minmax(0,1fr) 28px;background:var(--bg);border:1px solid var(--line);border-radius:10px;margin-top:8px;overflow:hidden}.stepper input{border:0;text-align:center;font-size:21px;font-weight:550;padding:11px 0;border-radius:0}.stepper button{border:0;border-radius:0;font-size:18px;min-width:0;min-height:50px;color:var(--muted)}.error{color:var(--accent);font-size:11px;min-height:0;margin:5px 0}.field-invalid input{outline:1px solid var(--accent)}.rir-help{font-size:11px;color:var(--muted);margin:12px 0}.series-value{font-size:12px;color:var(--muted);min-height:20px}.series-value.winner{color:var(--text);font-weight:650}.add{width:100%;border-style:dashed;margin-top:16px;color:var(--accent);min-height:48px}.entry-foot{margin-top:16px;display:flex;gap:16px;align-items:center;justify-content:space-between}.entry-foot span{font-size:10px;color:var(--muted);max-width:230px}.quiet{border:0;font-size:12px;padding:0 8px;color:var(--muted)}.result{border:1px solid var(--line);border-radius:20px;padding:30px;background:linear-gradient(145deg,var(--panel2),var(--panel))}.result h2{margin-top:20px;color:var(--accent);font-weight:450}.result-number{display:flex;align-items:baseline;gap:12px;margin:0;min-height:110px}.result-number>span{font-size:clamp(58px,7vw,88px);letter-spacing:-4px;font-weight:600;line-height:1.3;font-variant-numeric:tabular-nums}.result-number small{font-size:22px;color:var(--muted)}.result p{font-size:13px;color:var(--muted);margin:8px 0 20px}.result-footer{border-top:1px solid var(--line);padding-top:18px;font-size:10px;display:flex;align-items:center;gap:7px;color:var(--muted)}.dot{width:5px;height:5px;background:var(--accent);border-radius:50%}.best{font-size:12px;margin-bottom:16px}.result .caution{font-size:11px;border-left:2px solid var(--muted);padding-left:10px}.target{margin-top:16px;border:1px solid var(--line);border-radius:16px;background:var(--panel)}summary{list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px;min-height:64px;padding:18px 22px;font-size:14px;font-weight:550}summary::-webkit-details-marker{display:none}summary span{color:var(--muted)}.target-content{padding:0 22px 24px}.muted{color:var(--muted);font-size:12px}.target-content>p{margin-top:0}.tabs{margin:20px 0}.tabs button{flex:1;border:0;font-size:12px;padding:8px}.target label{font-size:12px;color:var(--muted);display:block}.simple{position:relative;margin-top:7px}.simple span{position:absolute;right:14px;top:12px}.simple input{padding-right:40px}.presets{display:flex;gap:8px;margin-top:10px}.presets button{flex:1;min-height:36px;font-size:12px}.target-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.target-grid input{margin-top:7px}.increment{margin-top:20px}.increment>span{float:right}.increment select{margin-top:7px}.target-results{margin:20px 0 12px;padding:16px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.target-results>div{display:flex;justify-content:space-between;align-items:center;padding:5px 0;gap:12px}.target-results span{font-size:12px;color:var(--muted)}.target-results strong{font-size:18px;font-weight:550}.target-results>div:last-child strong{font-size:24px}.method{border-top:1px solid var(--line);margin-top:32px}.method summary{padding-left:0;padding-right:0;color:var(--muted);font-size:12px}.method>div{max-width:760px;color:var(--muted);font-size:13px;padding-bottom:16px}.formula{color:var(--text)}footer{border-top:1px solid var(--line);padding:24px 0 32px;font-size:9px;color:var(--muted);letter-spacing:1.5px;display:flex;justify-content:space-between}footer span{letter-spacing:0}[hidden]{display:none!important}@media(min-width:1000px){aside{position:sticky;top:24px}}@media(max-width:760px){header{padding:16px 22px}.header-note{display:none}main{padding:30px 20px 0}.intro{margin-bottom:28px}h1{letter-spacing:-1px}.workspace{grid-template-columns:1fr;gap:18px}.entry{padding:22px}.result{padding:24px}.result-number{min-height:90px}.result-number>span{font-size:72px}.fields{gap:8px}.stepper{grid-template-columns:26px minmax(0,1fr) 26px}.stepper input{font-size:19px}.brand img{width:45px;height:45px}.intro p{font-size:13px}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s ease}}