:root {
  --bg: #f6f6f4; --surface: #ffffff; --text: #1f2328; --muted: #6a737d; --line: #e1e4e8;
  --accent: #e8590c; --accent-text: #ffffff; --danger: #c92a2a; --notice-bg: #fff4e0; --error-bg: #fde8e8;
  --chart-ele: #6b7280; --chart-speed: #1c7ed6; --chart-hr: #e03131; --chart-cad: #2f9e44; --chart-power: #7048e8;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a; --surface: #1d2024; --text: #e6e8eb; --muted: #9aa3ad; --line: #30353b;
    --accent: #ff8a3d; --accent-text: #1a1a1a; --danger: #ff6b6b; --notice-bg: #3a2e16; --error-bg: #3d1f1f;
    --chart-ele: #9ca3af; --chart-speed: #4dabf7; --chart-hr: #ff8787; --chart-cad: #69db7c; --chart-power: #9775fa;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
h1 { font-size: 1.6rem; margin: 0.2em 0 0.4em; }
h2 { font-size: 1.15rem; margin: 1.2em 0 0.5em; }
main { max-width: 1000px; margin: 0 auto; padding: 16px; }
footer { max-width: 1000px; margin: 0 auto; padding: 8px 16px 24px; color: var(--muted); font-size: 0.8rem; }
.top { display: flex; align-items: center; gap: 16px; padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--line); }
.top .brand { font-weight: 700; color: var(--text); text-decoration: none; }
.top nav { flex: 1; }
.top form { margin: 0; }
button.link { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; cursor: pointer; }
.muted { color: var(--muted); }
.error { background: var(--error-bg); border-radius: 8px; padding: 10px 12px; }
.notice { background: var(--notice-bg); border-radius: 8px; padding: 10px 12px; font-size: 0.92rem; }
.card, .stats > div { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.label { color: var(--muted); font-size: 0.82rem; }
.big { font-size: 1.35rem; font-weight: 650; }
.totals { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 8px 0 16px; }
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 12px 0; }
.upload { background: var(--surface); border: 2px dashed var(--line); border-radius: 10px; padding: 12px 16px; margin: 0 0 16px; }
.upload.drag { border-color: var(--accent); }
.upload p { margin: 0 0 8px; }
.upload input[type=file] { min-width: 0; width: 100%; }
.upload-log { list-style: none; padding: 0; margin: 8px 0 0; font-size: 0.9rem; }
.upload-log .ok { color: var(--chart-cad); } .upload-log .dup { color: var(--muted); } .upload-log .err { color: var(--danger); }
table.list { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
table.list th, table.list td { padding: 8px 10px; text-align: left; border-bottom: 1px solid var(--line); font-size: 0.93rem; }
table.list th { color: var(--muted); font-weight: 600; font-size: 0.8rem; }
table.list tr:last-child td { border-bottom: 0; }
.num { text-align: right !important; font-variant-numeric: tabular-nums; }
.pager { display: flex; gap: 16px; justify-content: center; margin: 16px 0; }
.map { height: 420px; border-radius: 10px; overflow: hidden; border: 1px solid var(--line); margin: 12px 0; }
.ride-head h1 { font-size: 2rem; margin-bottom: 0.1em; }
.hero { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 16px 0 6px; }
.hero-num { font-size: 2.2rem; font-weight: 700; line-height: 1.15; font-variant-numeric: tabular-nums; }
.minor { display: flex; flex-wrap: wrap; gap: 6px 22px; margin: 0 0 16px; padding-bottom: 14px; border-bottom: 1px solid var(--line); font-size: 0.95rem; }
.minor .label { margin-right: 4px; }
.ride-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(300px, 1fr); gap: 16px; align-items: start; }
.ride-grid .map { height: 460px; margin: 0; }
.top nav { display: flex; gap: 16px; }
.profile-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(260px, 1fr); gap: 24px; align-items: start; }
.week-card { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; margin-bottom: 16px; }
.streak-num { font-size: 2.6rem; font-weight: 700; line-height: 1; color: var(--accent); }
.dots { display: flex; gap: 10px; }
.dot-day { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.dot-mark { width: 22px; height: 22px; border-radius: 50%; border: 2px solid var(--line); }
.dot-mark.on { background: var(--accent); border-color: var(--accent); }
.dot-day.today .label { color: var(--text); font-weight: 700; }
.dot-day.today .dot-mark:not(.on) { border-color: var(--text); }
.dot-day.future { opacity: 0.45; }
.period-head { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; }
.period-head h2 { margin: 0; }
.period-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.bars-note { min-height: 1.6em; margin: 6px 0 0; font-size: 0.9rem; }
.bars { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 6px 8px 0; }
.bars svg { display: block; width: 100%; overflow: visible; }
.bars text { fill: var(--muted); font-size: 11px; }
.side-block { margin-bottom: 22px; }
.side-block h2 { margin: 0 0 6px; font-size: 1.05rem; }
table.kv { width: 100%; border-collapse: collapse; }
table.kv td { padding: 5px 0; border-bottom: 1px solid var(--line); font-size: 0.93rem; }
table.kv td:last-child { text-align: right; font-variant-numeric: tabular-nums; }
.small { font-size: 0.8rem; }
.splits h2 { margin-top: 0; }
.splits-scroll { max-height: 460px; overflow-y: auto; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); }
.splits-scroll table.list { border: 0; border-radius: 0; }
.splits-scroll th { position: sticky; top: 0; background: var(--surface); }
.spd { width: 90px; }
.spd .bar { display: block; height: 8px; border-radius: 4px; background: var(--chart-speed); opacity: 0.75; }
.analysis { margin: 22px 0 0; }
.analysis-head { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px; }
.analysis-head h2 { margin: 0; }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; }
.tabs button { padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--surface); color: var(--text); font: inherit; font-size: 0.9rem; cursor: pointer; }
.tabs button[aria-selected="true"] { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
.charts { display: grid; gap: 10px; margin: 10px 0 12px; }
.chart[hidden] { display: none; }
.chart { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px 4px; }
.chart .head { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--muted); }
.chart .head .val { color: var(--text); font-variant-numeric: tabular-nums; }
.chart svg { display: block; width: 100%; overflow: visible; touch-action: pan-y; }
.chart text { fill: var(--muted); font-size: 11px; }
.dot { width: 14px; height: 14px; border-radius: 50%; background: var(--accent); border: 2px solid #fff; box-shadow: 0 0 0 1px rgba(0,0,0,.3); }
.actions { display: flex; gap: 10px; flex-wrap: wrap; margin: 16px 0; }
.button, button.primary, details button { display: inline-block; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--line); background: var(--surface); color: var(--text); font: inherit; text-decoration: none; cursor: pointer; }
button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); font-weight: 600; }
button.danger { color: var(--danger); border-color: var(--danger); }
details.edit { margin: 8px 0 24px; }
details.edit summary { cursor: pointer; color: var(--muted); }
form.inline { display: flex; gap: 12px; flex-wrap: wrap; align-items: end; margin: 12px 0; }
label { display: block; font-size: 0.9rem; color: var(--muted); }
.description { white-space: pre-wrap; }
label.wide { flex: 1 1 100%; }
textarea { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--text); font: inherit; }
input, select { display: block; margin-top: 4px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); color: var(--text); font: inherit; min-width: 220px; }
.auth { max-width: 380px; margin: 40px auto; }
.auth form { display: grid; gap: 14px; margin: 16px 0; }
.auth input { width: 100%; }
.crumbs { margin: 0; font-size: 0.9rem; }

@media (max-width: 720px) {
  .totals { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .map, .ride-grid .map { height: 300px; }
  .ride-grid, .profile-grid { grid-template-columns: 1fr; }
  .hero { gap: 8px; }
  .hero-num { font-size: 1.45rem; }
  .ride-head h1 { font-size: 1.5rem; }
  .splits-scroll { max-height: 320px; }
  table.cards thead { display: none; }
  table.cards, table.cards tbody, table.cards tr, table.cards td { display: block; width: 100%; }
  table.cards tr { padding: 8px 4px; border-bottom: 1px solid var(--line); }
  table.cards td { border: 0; padding: 2px 10px; text-align: left; }
  table.cards td::before { content: attr(data-label) ": "; color: var(--muted); font-size: 0.8rem; }
  table.cards .num { text-align: left !important; }
}
}