:root{--bg: #f6f3ef;--surface: #ffffff;--surface-2: #efebe5;--text: #1c1916;--muted: #6d655d;--line: #e2dcd4;--accent: #d9481f;--accent-ink: #ffffff;--accent-soft: #fbe3da;--error: #b42318;--z-E: #2f9e5a;--z-M: #2f6fd6;--z-T: #c99400;--z-I: #e0661f;--z-R: #c8283a;--radius: 14px;--font-num: "Barlow Condensed", ui-sans-serif, system-ui, sans-serif;--font-body: "Barlow", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;color-scheme:light}@media(prefers-color-scheme:dark){:root{--bg: #14110f;--surface: #1e1a17;--surface-2: #29231f;--text: #f3eee8;--muted: #a39a90;--line: #362f2a;--accent: #ff6a3d;--accent-ink: #1a0d07;--accent-soft: #3a2117;--error: #ff8a7a;--z-E: #4cc47b;--z-M: #5b95f0;--z-T: #e8b730;--z-I: #ff8a45;--z-R: #ff5c6c;color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.5 var(--font-body);-webkit-font-smoothing:antialiased}.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;letter-spacing:.01em}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}[hidden]{display:none!important}.top{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}.top-inner{max-width:760px;margin:0 auto;padding:10px 16px;display:flex;align-items:center;justify-content:space-between}.brand{display:flex;align-items:center;gap:10px;color:inherit;text-decoration:none;font:700 1.3rem/1 var(--font-num);text-transform:uppercase;letter-spacing:.04em}.wrap{max-width:760px;margin:0 auto;padding:8px 16px 40px}.intro{color:var(--muted);margin:14px 0 12px}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:14px}.card-title{margin:0;font:600 1.15rem/1.2 var(--font-num);text-transform:uppercase;letter-spacing:.04em}fieldset.race{border:0;margin:0;padding:0;min-width:0}fieldset.race legend{padding:0;margin-bottom:10px;font:600 1.15rem/1.2 var(--font-num);text-transform:uppercase;letter-spacing:.04em}#race2{margin-top:12px}#race2 legend{font-size:1rem;color:var(--muted)}.race-row{display:flex;gap:10px;flex-wrap:wrap}.field-distance{flex:1 1 200px}.field-custom{flex:0 1 150px}.time-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:10px}.field{display:flex;flex-direction:column;gap:4px;min-width:0}.field>span{font-size:.8rem;font-weight:500;color:var(--muted)}select,input[type=number]{width:100%;min-height:48px;padding:8px 12px;border:1.5px solid var(--line);border-radius:10px;background:var(--surface-2);color:var(--text);font:500 1.05rem var(--font-body)}.time-row input{font:600 1.6rem/1 var(--font-num);text-align:center;font-variant-numeric:tabular-nums}select:focus-visible,input:focus-visible,button:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px}fieldset.invalid input[name=h],fieldset.invalid input[name=m],fieldset.invalid input[name=s]{border-color:var(--error)}.hero{display:grid;grid-template-columns:1fr 1fr;gap:1px;border-radius:var(--radius);overflow:hidden;margin-bottom:18px;background:var(--accent);background-image:repeating-linear-gradient(180deg,transparent 0 31px,rgb(255 255 255 / .09) 31px 33px);color:#fff}.stat{padding:16px;display:flex;flex-direction:column;gap:2px;min-width:0}.stat+.stat{border-left:2px solid rgb(255 255 255 / .35)}.stat-label{font:600 .85rem/1.2 var(--font-num);text-transform:uppercase;letter-spacing:.08em;opacity:.9}.stat-value{font-size:clamp(2.6rem,11vw,3.8rem);font-weight:700;line-height:1;margin:4px 0}.stat-sub{font-size:.85rem;opacity:.92}.hero .error{grid-column:1 / -1;margin:0;padding:16px;background:var(--surface);color:var(--error);border:0}@media(prefers-color-scheme:dark){.hero{color:var(--accent-ink)}.stat+.stat{border-left-color:#00000040}}.seg{display:inline-flex;background:var(--surface-2);border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px;flex-wrap:wrap}.seg button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:transparent;color:var(--muted);font:600 .95rem var(--font-body);min-height:40px;padding:6px 14px;border-radius:999px;cursor:pointer}.seg button[aria-checked=true]{background:var(--surface);color:var(--text);box-shadow:0 1px 3px #00000026}.seg-small button{min-height:34px;padding:4px 12px}.tabs{display:grid;grid-template-columns:1fr 1fr;border-bottom:2px solid var(--line);margin-bottom:16px}.tabs button{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:none;cursor:pointer;color:var(--muted);font:700 1.2rem/1.1 var(--font-num);text-transform:uppercase;letter-spacing:.04em;padding:12px 6px;margin-bottom:-2px;border-bottom:3px solid transparent}.tabs button small{display:block;font:500 .75rem var(--font-body);text-transform:none;letter-spacing:0;margin-top:2px}.tabs button[aria-selected=true]{color:var(--text);border-bottom-color:var(--accent)}.section-title{font:600 1.15rem/1.2 var(--font-num);text-transform:uppercase;letter-spacing:.04em;margin:22px 0 10px}.hint{font:500 .8rem var(--font-body);text-transform:none;letter-spacing:0;color:var(--muted)}.zones{list-style:none;margin:0;padding:0;display:grid;gap:10px}.zone{display:flex;gap:12px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px}.zone-E{--zc: var(--z-E)}.zone-M{--zc: var(--z-M)}.zone-T{--zc: var(--z-T)}.zone-I{--zc: var(--z-I)}.zone-R{--zc: var(--z-R)}.zone-badge{flex:none;width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--zc);color:#fff;font:700 1.2rem/1 var(--font-num)}.zone-main{flex:1;min-width:0}.zone-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px;flex-wrap:wrap}.zone h3{margin:0;font:600 1.2rem/1.2 var(--font-num);text-transform:uppercase;letter-spacing:.03em}.zone-pace{margin:0;white-space:nowrap}.zone-pace .num{font-size:1.7rem;font-weight:700;line-height:1}.zone-pace small{color:var(--muted);margin-left:2px}.zone-what{margin:4px 0 0;font-size:.9rem;color:var(--muted)}.zone-splits{margin:8px 0 0;display:flex;gap:6px;flex-wrap:wrap}.zone-splits span{font-size:.8rem;color:var(--muted);background:var(--surface-2);border-radius:6px;padding:3px 8px}.zone-splits b{color:var(--text);font-size:1.05rem;font-weight:600;margin-left:2px}.table-wrap{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}table.results{width:100%;border-collapse:collapse}.results th,.results td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}.results tbody tr:last-child>*{border-bottom:0}.results thead th{font:600 .8rem var(--font-body);color:var(--muted);text-transform:uppercase;letter-spacing:.05em;background:var(--surface-2)}.results thead .hint{display:block;text-transform:none;font-size:.75rem}.results tbody th{font-weight:500}.results td.num,.results td .num{font-size:1.25rem;font-weight:600}.results td small,.results td small.num{display:block;color:var(--muted);font-size:.95rem;font-weight:500;line-height:1.1}.results .muted{color:var(--muted);font-weight:500!important;font-size:1.05rem!important}.results-compare td.delta{color:var(--muted);font-size:1rem;white-space:nowrap}.results tr.is-you{background:var(--accent-soft)}.results tr.is-marathon th{font-weight:700}.tag{display:inline-block;font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;background:var(--accent);color:var(--accent-ink);padding:1px 6px;border-radius:5px;vertical-align:2px}.k-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:10px}.k-value{font-size:1.8rem;font-weight:700;color:var(--accent)}.mode-box{margin-top:12px}.hint-text{color:var(--muted);font-size:.9rem;margin:8px 0 0}.slider input{width:100%;accent-color:var(--accent);height:32px}.slider-scale{display:flex;justify-content:space-between;font-size:.75rem;color:var(--muted)}.explain{margin-top:14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px}.explain summary{cursor:pointer;font-weight:600}.explain p{font-size:.92rem;color:var(--muted)}.explain b{color:var(--text)}code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.85em;background:var(--surface-2);padding:1px 5px;border-radius:5px;color:var(--text)}.error{color:var(--error);background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px 16px;font-weight:500}.foot{max-width:760px;margin:0 auto;padding:0 16px 32px;color:var(--muted);font-size:.8rem}@media(max-width:420px){.hero{grid-template-columns:1fr}.stat+.stat{border-left:0;border-top:2px solid rgb(255 255 255 / .35)}.results th,.results td{padding:9px 8px}.results td.num,.results td .num{font-size:1.15rem}.seg button{padding:6px 11px;font-size:.9rem}}