:root {
  --bg: #f6f7f5; --surface: #ffffff; --surface2: #eef1ee; --text: #17201d; --muted: #5b6862;
  --line: #d9dfdb; --grid: #e7ebe8; --accent: #0f766e; --accent-ink: #ffffff; --accent-soft: #d5efeb;
  --warn: #a15c07; --warn-soft: #fdf0d9; --bad: #b42318; --bad-soft: #fde7e4; --good: #157f3c;
  --s1: #2a78d6; --s2: #eb6834; --s3: #1baf7a; --s4: #eda100; --s5: #e87ba4; --s6: #008300; --s7: #4a3aa7; --s8: #8a8f8c;
  --raw: #a3aba7; --clean: #0f766e; --best: #eb6834;
  --radius: 12px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 16px rgba(0,0,0,.05);
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: #0f1412; --surface: #171e1b; --surface2: #1f2824; --text: #e6ece9; --muted: #9aa8a1;
  --line: #2c3833; --grid: #24302b; --accent: #2dd4bf; --accent-ink: #062a26; --accent-soft: #123b36;
  --warn: #f5b94a; --warn-soft: #36270c; --bad: #ff8a7a; --bad-soft: #3a1714; --good: #5ee08f;
  --s1: #3987e5; --s2: #d95926; --s3: #199e70; --s4: #c98500; --s5: #d55181; --s6: #008300; --s7: #9085e9; --s8: #7d8682;
  --raw: #5d6964; --clean: #2dd4bf; --best: #f08a5d;
  --shadow: none;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--text); font: 15px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; overflow-x: hidden; }
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.25; margin: 0 0 .5em; }
h1 { font-size: clamp(1.55rem, 4vw, 2.3rem); letter-spacing: -.01em; }
h2 { font-size: 1.12rem; }
h3 { font-size: .98rem; }
.mt { margin-top: 1.1em; }
.hidden { display: none !important; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--surface); padding: 6px 10px; border-radius: 8px; z-index: 50; }
.skip:focus { left: 8px; }
.muted { color: var(--muted); }
.small { font-size: .86rem; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.topbar { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--surface); position: sticky; top: 0; z-index: 20; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; min-width: 0; }
.backlink { text-decoration: none; color: var(--muted); }
.sep { color: var(--line); }
.chip { font-size: .75rem; padding: 2px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); white-space: nowrap; }
.topctl { display: flex; align-items: center; gap: 8px; }
.iconbtn { border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 8px; min-width: 36px; height: 36px; font-size: 1.05rem; cursor: pointer; }
.iconbtn:hover { background: var(--surface2); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; background: var(--surface); }
.segbtn { border: 0; background: transparent; color: var(--muted); padding: 6px 10px; font: inherit; font-size: .85rem; cursor: pointer; min-height: 34px; }
.segbtn + .segbtn { border-left: 1px solid var(--line); }
.segbtn[aria-pressed="true"] { background: var(--accent-soft); color: var(--accent); font-weight: 600; }
.seg.small .segbtn { padding: 4px 9px; min-height: 30px; font-size: .8rem; }

.tabs { display: flex; gap: 6px; max-width: 1180px; margin: 14px auto 0; padding: 0 16px; overflow-x: auto; scrollbar-width: none; }
.tab { flex: 1 1 0; min-width: 150px; text-align: left; border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 12px; padding: 10px 14px; cursor: pointer; font: inherit; display: flex; flex-direction: column; gap: 1px; }
.tab:hover { background: var(--surface2); }
.tab[aria-selected="true"] { border-color: var(--accent); box-shadow: inset 0 -3px 0 var(--accent); }
.tab-t { font-weight: 650; }
.tab-s { font-size: .8rem; color: var(--muted); }

main { max-width: 1180px; margin: 0 auto; padding: 0 16px 24px; }
.intro { padding: 30px 0 14px; text-align: center; }
.intro.left { text-align: left; padding-bottom: 6px; }
.lede { max-width: 660px; margin: 0 auto 20px; color: var(--muted); font-size: 1.04rem; }
.intro.left .lede { margin-left: 0; }
.dropzone { max-width: 720px; margin: 0 auto; padding: 36px 16px; border: 2px dashed var(--line); border-radius: 18px; background: var(--surface); cursor: pointer; transition: border-color .15s, background .15s; }
.dropzone:hover, .dropzone.over { border-color: var(--accent); background: var(--accent-soft); }
.dz-main { font-size: 1.2rem; font-weight: 600; margin: 0 0 4px; }
.dz-sub { margin: 0; color: var(--muted); }
.linkish { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; cursor: pointer; font: inherit; text-align: left; }
.examples { margin: 14px auto 0; color: var(--muted); max-width: 720px; }
.intro.left .examples { margin-left: 0; }
.howto { max-width: 720px; margin: 12px auto 0; text-align: left; color: var(--muted); font-size: .92rem; }
.howto summary { cursor: pointer; }
.alert { max-width: 720px; margin: 14px auto 0; padding: 10px 14px; border-radius: 10px; background: var(--bad-soft); color: var(--bad); text-align: left; }
.note { padding: 9px 13px; border-radius: 10px; background: var(--warn-soft); color: var(--text); border-left: 3px solid var(--warn); margin: 10px 0; font-size: .92rem; }
.empty { color: var(--muted); font-style: italic; margin: 8px 0; }

.btn { border: 1px solid var(--line); background: var(--surface); color: var(--text); border-radius: 10px; padding: 8px 14px; font: inherit; font-weight: 600; cursor: pointer; min-height: 40px; }
.btn:hover:not(:disabled) { background: var(--surface2); }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.btn.primary:hover:not(:disabled) { background: var(--accent); filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.small { padding: 5px 10px; min-height: 34px; font-size: .85rem; }
.muted-inv { font-weight: 400; opacity: .8; }

.filebar { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 18px 0 6px; }
.filebar-actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.controls { display: flex; flex-wrap: wrap; gap: 10px 18px; align-items: flex-end; margin: 6px 0 14px; padding: 12px 14px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
label { display: block; font-size: .88rem; color: var(--muted); margin-bottom: 10px; }
label > input:not([type="checkbox"]), label > select { display: block; margin-top: 4px; }
label.inline { display: flex; flex-direction: row; align-items: center; gap: 8px; margin: 0; }
label.inline > select, label.inline > input { margin-top: 0; }
label.check { display: flex; flex-direction: row; align-items: center; gap: 8px; color: var(--text); }
.controls label { margin: 0; }
input[type="text"], input[type="number"], input[type="date"], select {
  font: inherit; font-size: .95rem; color: var(--text); background: var(--bg); border: 1px solid var(--line); border-radius: 8px; padding: 7px 9px; min-height: 38px; max-width: 100%; }
input[type="number"] { width: 7.5em; }
input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--accent); }
input[type="range"] { accent-color: var(--accent); width: 100%; }
.field-row { display: flex; gap: 12px; flex-wrap: wrap; }
.field-row > label { flex: 1 1 130px; }
.field-row.wrap > label { flex: 1 1 240px; }
.card label > input[type="number"], .card label > input[type="text"], .card label > select { width: 100%; }
.gpx-settings .sub label input[type="number"] { width: 4.5em; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; box-shadow: var(--shadow); margin-bottom: 16px; min-width: 0; }
.card-h { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.card-h h2 { margin: 0; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.grid2 { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 16px; }
.grid2.tight { gap: 20px; margin-top: 8px; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 10px; margin-bottom: 16px; }
.tiles.small { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); margin-bottom: 8px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 12px 14px; min-width: 0; }
.card .tile { background: var(--bg); }
.tile .k { font-size: .8rem; color: var(--muted); }
.tile .v { font-size: 1.45rem; font-weight: 700; letter-spacing: -.01em; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.tiles.small .tile .v { font-size: 1.2rem; }
.tile .s { font-size: .8rem; color: var(--muted); }

.chart { width: 100%; min-height: 60px; }
.chart svg, .map svg { display: block; }
.chart .grid { stroke: var(--grid); stroke-width: 1; }
.chart .base { stroke: var(--line); stroke-width: 1; }
.chart .ax { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart .hit { fill: transparent; cursor: pointer; }
.chart .hit.on, .chart .hit:hover { fill: var(--text); fill-opacity: .06; }
.chart .hitarea { fill: transparent; cursor: crosshair; }
.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .line.main { stroke: var(--s1); }
.chart .line.best { stroke: var(--best); stroke-dasharray: 5 4; stroke-width: 1.6; }
.chart .line.raw { stroke: var(--raw); stroke-width: 1.4; }
.chart .line.clean { stroke: var(--clean); }
.chart .dot { fill: var(--s1); stroke: var(--surface); stroke-width: 2; }
.chart .cross { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.chart .hl { fill: none; stroke: var(--text); stroke-width: 2; }
.bar.g0, .sw.g0 { fill: var(--s1); background: var(--s1); }
.bar.g1, .sw.g1 { fill: var(--s2); background: var(--s2); }
.bar.g2, .sw.g2 { fill: var(--s3); background: var(--s3); }
.bar.g3, .sw.g3 { fill: var(--s4); background: var(--s4); }
.bar.g4, .sw.g4 { fill: var(--s5); background: var(--s5); }
.bar.g5, .sw.g5 { fill: var(--s6); background: var(--s6); }
.bar.g6, .sw.g6 { fill: var(--s7); background: var(--s7); }
.bar.g7, .sw.g7 { fill: var(--s8); background: var(--s8); }
.sw.gc { background: var(--raw); }
.sw { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: 6px; vertical-align: -1px; }
.bar { rx: 2px; }

.tip { position: fixed; z-index: 60; pointer-events: none; background: var(--surface); color: var(--text); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; font-size: .84rem; box-shadow: 0 6px 24px rgba(0,0,0,.18); max-width: 260px; }
.tip strong { display: block; margin-bottom: 3px; }
.tip .tr { display: flex; align-items: center; gap: 4px; }
.tip .tr b { margin-left: auto; padding-left: 12px; font-variant-numeric: tabular-nums; }
.tip .tr.tot { border-top: 1px solid var(--line); margin-top: 3px; padding-top: 3px; }

.tbl { width: 100%; border-collapse: collapse; font-size: .9rem; }
.tbl th, .tbl td { padding: 7px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.tbl th { font-size: .78rem; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
.tbl .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.tbl.compact th, .tbl.compact td { padding: 5px 6px; }
.tbl tr.tot td { font-weight: 700; }
.scrollbox { max-height: 340px; overflow: auto; }
.scrollbox.wide { max-height: 480px; }

.prlist { list-style: none; margin: 0; padding: 0; }
.prlist li + li { border-top: 1px solid var(--line); }
.prbtn { display: grid; grid-template-columns: 58px 1fr; gap: 0 10px; width: 100%; text-align: left; background: none; border: 0; padding: 8px 4px; font: inherit; color: var(--text); cursor: pointer; border-radius: 8px; }
.prbtn:hover { background: var(--surface2); }
.prd { grid-row: span 2; color: var(--muted); font-size: .84rem; font-variant-numeric: tabular-nums; }
.pre { font-weight: 600; overflow-wrap: anywhere; }
.prt { font-size: .86rem; color: var(--muted); }

.pace-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.result { border-color: var(--accent); }
.result-main { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin-bottom: 14px; }
.result .k, .breakdown .k { font-size: .82rem; color: var(--muted); }
.big { font-size: clamp(1.8rem, 5vw, 2.5rem); font-weight: 750; letter-spacing: -.02em; font-variant-numeric: tabular-nums; line-height: 1.1; }
.mid { font-size: 1.35rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.breakdown { margin-bottom: 12px; }
.brow { display: grid; grid-template-columns: 76px 1fr 72px; align-items: center; gap: 10px; margin: 6px 0; }
.btrack { position: relative; height: 14px; background: var(--surface2); border-radius: 7px; overflow: hidden; }
.bmid { position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: var(--muted); }
.bfill { position: absolute; top: 2px; bottom: 2px; border-radius: 4px; }
.bfill.slow { background: var(--s2); }
.bfill.fast { background: var(--s1); }
.bv { text-align: right; font-variant-numeric: tabular-nums; font-size: .9rem; }
.settings summary { cursor: pointer; font-weight: 600; }
.settings[open] summary { margin-bottom: 12px; }
.models ol { padding-left: 1.2em; margin: 0; }
.models li { margin-bottom: 10px; }

.gpx-grid { display: grid; grid-template-columns: minmax(250px, 320px) minmax(0, 1fr); gap: 16px; align-items: start; }
.gpx-settings .sub { margin: -4px 0 10px 26px; }
.gpx-settings .sub label input[type="number"] { width: 4.5em; display: inline-block; }
.gpx-settings .sub label:first-child > input { display: inline-block; margin: 0 2px; }
.legend { font-size: .82rem; color: var(--muted); display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.legend .sw { margin: 0 2px 0 8px; }
.legend .sw.raw { background: var(--raw); height: 3px; width: 16px; }
.legend .sw.clean { background: var(--clean); height: 3px; width: 16px; }
.legend .sw.stopdot { background: var(--s4); border-radius: 50%; }
.legend .sw.spikedot { background: var(--bad); border-radius: 50%; }
.map { width: 100%; background: var(--bg); border-radius: 10px; border: 1px solid var(--line); margin-bottom: 10px; overflow: hidden; }
.trk { fill: none; stroke-linejoin: round; stroke-linecap: round; }
.trk.raw { stroke: var(--raw); stroke-width: 1.5; }
.trk.clean { stroke: var(--clean); stroke-width: 2.5; }
.trk.clean.p1 { stroke: var(--s2); }
.trk.clean.p2 { stroke: var(--s7); }
.trk.clean.p3 { stroke: var(--s4); }
.stopm circle { fill: var(--s4); fill-opacity: .35; stroke: var(--s4); stroke-width: 2; }
.spike circle { fill: none; stroke: var(--bad); stroke-width: 2.5; }
.startm { fill: var(--good); stroke: var(--surface); stroke-width: 2; }
.endm { fill: var(--text); stroke: var(--surface); stroke-width: 2; }
.downloads { display: flex; flex-wrap: wrap; gap: 10px; }
.loglist { margin: 0 0 10px; padding-left: 1.2em; }
.loglist li { margin-bottom: 4px; }

.foot { max-width: 1180px; margin: 0 auto; padding: 18px 16px 40px; color: var(--muted); font-size: .86rem; border-top: 1px solid var(--line); }

@media (max-width: 900px) {
  .grid2, .pace-grid, .gpx-grid { grid-template-columns: minmax(0, 1fr); }
  .result-main { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
}
@media (max-width: 560px) {
  .tab { min-width: 128px; padding: 8px 10px; }
  .tab-s { display: none; }
  .result-main { grid-template-columns: minmax(0, 1fr); }
  .chip { display: none; }
  .tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .scrollbox.wide { max-height: none; }
  .tbl { font-size: .84rem; }
}
@media print {
  .topbar, .tabs, .foot, .dropzone, .btn { display: none !important; }
}
.cellnote { display: block; white-space: normal; font-size: .78rem; color: var(--muted); }
#rSplits, #volTable, #repMax, #gStats, #exSessions { overflow-x: auto; }
@media (max-width: 560px) { .tbl .num { white-space: normal; } }
.chartlegend { margin: 0 0 6px; gap: 4px 12px; }
.chartlegend .li { display: inline-flex; align-items: center; }
.chartlegend .sw { margin: 0 5px 0 0; }

.faq { max-width: 760px; margin: 28px auto 0; padding: 0 16px; }
.faq h2 { font-size: 1.1rem; margin: 0 0 8px; }
.faq details { border-top: 1px solid var(--line); padding: 10px 0; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin: 8px 0 0; color: var(--muted); font-size: .92rem; }