:root {
  --ink: #17212b;
  --blue: #1f4e5f;
  --blue-deep: #153743;
  --track: #c84c3a;
  --amber: #d69c2f;
  --green: #2e7d5b;
  --paper: #f4f7f7;
  --white: #ffffff;
  --line: #cbd5d8;
  --muted: #647278;
  --danger-bg: #fff0ed;
  --shadow: 0 10px 28px rgba(23, 33, 43, 0.08);
  font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { min-width: 320px; scroll-behavior: smooth; }
body { margin: 0; min-height: 100vh; background: var(--paper); }
button, input, select { font: inherit; }
button { cursor: pointer; }
button:disabled { cursor: not-allowed; opacity: .45; }

.skip-link {
  position: fixed; z-index: 100; top: .5rem; left: .5rem; transform: translateY(-150%);
  background: var(--white); color: var(--ink); padding: .65rem 1rem; border: 2px solid var(--amber);
}
.skip-link:focus { transform: none; }

.app-shell { min-height: 100vh; display: grid; grid-template-columns: 272px minmax(0, 1fr); }
.sidebar {
  position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column;
  padding: 28px 22px 22px; color: var(--white); background: var(--ink); border-right: 6px solid var(--track);
}
.brand-block { display: flex; gap: 14px; align-items: center; padding-bottom: 28px; border-bottom: 1px solid rgba(255,255,255,.18); }
.meet-year {
  writing-mode: vertical-rl; transform: rotate(180deg); letter-spacing: .16em; color: var(--amber);
  font: 700 13px/1 "Bahnschrift", "Consolas", monospace;
}
.brand-kicker { margin: 0 0 2px; color: #b9c8cc; font-size: 12px; letter-spacing: .09em; }
.brand-block h1 { margin: 0; font: 700 32px/1.1 "Noto Serif SC", "SimSun", serif; letter-spacing: .08em; }

.primary-nav { display: grid; gap: 4px; margin: 28px 0; }
.nav-item {
  display: grid; grid-template-columns: 34px 1fr; align-items: center; width: 100%; padding: 12px 10px;
  border: 0; border-left: 3px solid transparent; color: #cedadd; background: transparent; text-align: left;
}
.nav-item:hover { background: rgba(255,255,255,.07); color: var(--white); }
.nav-item.is-active { color: var(--white); background: var(--blue); border-left-color: var(--amber); }
.nav-code { color: var(--amber); font: 700 11px/1 "Bahnschrift", "Consolas", monospace; }

.session-panel { margin-top: auto; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.18); }
.session-heading { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.session-heading h2 { margin: 0; font-size: 14px; }
.login-form { margin-top: 12px; }
.login-form label { color: #b9c8cc; font-size: 12px; }
.inline-control { display: flex; align-items: stretch; gap: 8px; margin-top: 7px; }
.inline-control input { min-width: 0; flex: 1; }
.source-note { margin: 20px 0 0; color: #91a4aa; font-size: 11px; line-height: 1.7; }

.workspace { min-width: 0; padding: 28px clamp(18px, 3vw, 48px) 56px; }
.timing-rail {
  display: grid; grid-template-columns: 98px 1fr auto; min-height: 78px; margin-bottom: 34px;
  color: var(--white); background: var(--blue); border-top: 5px solid var(--track); box-shadow: var(--shadow);
}
.lane-marker { display: grid; place-content: center; text-align: center; background: var(--track); }
.lane-marker span, .rail-clock span { font: 700 10px/1.3 "Bahnschrift", "Consolas", monospace; letter-spacing: .14em; text-transform: uppercase; }
.lane-marker strong { font: 700 30px/1 "Bahnschrift", "Consolas", monospace; }
.rail-title { display: grid; align-content: center; gap: 3px; padding: 14px 24px; border-right: 1px solid rgba(255,255,255,.25); }
.rail-title span { color: #c1d1d5; font-size: 12px; }
.rail-title strong { font: 700 18px/1.4 "Noto Serif SC", "SimSun", serif; }
.rail-clock { display: grid; align-content: center; gap: 5px; padding: 14px 22px; text-align: right; }
.rail-clock time { color: var(--amber); font: 700 21px/1 "Bahnschrift", "Consolas", monospace; }

.view[hidden] { display: none; }
.view { animation: view-in .18s ease-out; }
@keyframes view-in { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }
.view-heading { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 26px; }
.eyebrow { margin: 0 0 7px; color: var(--track); font: 700 11px/1.2 "Bahnschrift", "Consolas", monospace; letter-spacing: .14em; text-transform: uppercase; }
.view-heading h2 { margin: 0; font: 700 clamp(25px, 3vw, 38px)/1.18 "Noto Serif SC", "SimSun", serif; }
.view-heading p:not(.eyebrow) { max-width: 680px; margin: 8px 0 0; color: var(--muted); font-size: 14px; }

.group-tabs { display: flex; border: 1px solid var(--line); background: var(--white); }
.group-tab { min-width: 64px; padding: 9px 13px; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--muted); }
.group-tab:last-child { border-right: 0; }
.group-tab.is-active { color: var(--white); background: var(--ink); }

.scoreboards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.scoreboard { min-width: 0; background: var(--white); border-top: 4px solid var(--blue); box-shadow: var(--shadow); }
.scoreboard-overall { border-top-color: var(--track); }
.scoreboard > header { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 19px 20px 15px; border-bottom: 1px solid var(--line); }
.scoreboard > header div { display: flex; align-items: center; gap: 12px; }
.scoreboard h3 { margin: 0; font-size: 18px; }
.scoreboard header p { margin: 0; color: var(--muted); font-size: 12px; }
.board-index, .panel-code { color: var(--track); font: 700 11px/1 "Bahnschrift", "Consolas", monospace; letter-spacing: .12em; }

.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th { padding: 11px 14px; color: var(--muted); background: #edf2f3; font-weight: 600; text-align: left; white-space: nowrap; }
td { padding: 12px 14px; border-top: 1px solid #e4eaec; vertical-align: middle; }
tbody tr:hover { background: #f7fafa; }
.rank-number { color: var(--track); font: 700 18px/1 "Bahnschrift", "Consolas", monospace; }
.score-number { font: 700 20px/1 "Bahnschrift", "Consolas", monospace; }
.empty-cell { padding: 34px 14px; color: var(--muted); text-align: center; }

.filter-row { display: flex; gap: 12px; }
label { display: grid; gap: 6px; color: var(--muted); font-size: 12px; font-weight: 600; }
input, select {
  min-height: 40px; padding: 8px 10px; color: var(--ink); background: var(--white); border: 1px solid #aebdc1; border-radius: 0;
}
input:focus, select:focus { border-color: var(--blue); outline: 2px solid rgba(31,78,95,.18); outline-offset: 1px; }
.progress-summary { display: grid; grid-template-columns: repeat(3, minmax(120px, 1fr)); margin-bottom: 20px; border: 1px solid var(--line); background: var(--white); }
.progress-summary div { display: flex; align-items: baseline; gap: 10px; padding: 16px 20px; border-right: 1px solid var(--line); }
.progress-summary div:last-child { border-right: 0; }
.progress-summary strong { font: 700 28px/1 "Bahnschrift", "Consolas", monospace; }
.progress-summary span { color: var(--muted); font-size: 12px; }
.table-frame { background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }

.status-pill { display: inline-flex; align-items: center; width: fit-content; padding: 4px 8px; border: 1px solid currentColor; font-size: 11px; font-weight: 700; white-space: nowrap; }
.status-neutral { color: #627278; }
.status-not-started { color: #69777b; background: #f0f3f4; }
.status-pending { color: #8d6411; background: #fff6df; }
.status-reviewed { color: var(--green); background: #e9f6ef; }

.notice { margin-bottom: 18px; padding: 12px 14px; border-left: 4px solid; font-size: 13px; }
.notice-amber { color: #714f0f; background: #fff6df; border-color: var(--amber); }
.entry-controls { display: grid; grid-template-columns: minmax(160px, .45fr) minmax(260px, 1fr); gap: 16px; margin-bottom: 18px; }
.format-strip { display: grid; grid-template-columns: minmax(220px, .7fr) 2fr; gap: 20px; padding: 17px 20px; color: var(--white); background: var(--ink); border-left: 6px solid var(--amber); }
.format-strip > div { display: grid; gap: 5px; align-content: center; }
.format-label { color: #9eb0b5; font-size: 11px; }
.format-strip strong { font: 700 18px/1.3 "Bahnschrift", "Consolas", monospace; }
.format-strip dl { display: grid; grid-template-columns: repeat(4, 1fr); margin: 0; }
.format-strip dl div { padding: 0 16px; border-left: 1px solid rgba(255,255,255,.2); }
.format-strip dt { color: #9eb0b5; font-size: 10px; }
.format-strip dd { margin: 5px 0 0; font-size: 13px; font-weight: 700; }
.result-sheet { margin-top: 18px; background: var(--white); border: 1px solid var(--line); box-shadow: var(--shadow); }
.result-sheet-header { display: flex; justify-content: space-between; align-items: center; gap: 14px; padding: 13px 16px; border-bottom: 1px solid var(--line); }
.result-sheet-header > span { font-weight: 700; }
.result-actions { display: flex; gap: 8px; }
.empty-state { padding: 46px 18px; color: var(--muted); text-align: center; }
.result-rows { display: grid; }
.result-row { display: grid; grid-template-columns: minmax(210px, 1.5fr) minmax(200px, 1fr) 90px 74px 70px; gap: 12px; align-items: center; padding: 12px 16px; border-top: 1px solid #e4eaec; }
.result-row:first-child { border-top: 0; }
.competitor strong, .competitor span { display: block; }
.competitor span { margin-top: 2px; color: var(--muted); font-size: 11px; }
.performance-control { display: grid; grid-template-columns: 1fr auto; }
.performance-control input { min-width: 0; font: 700 16px/1 "Bahnschrift", "Consolas", monospace; }
.unit-badge { display: grid; place-items: center; min-width: 48px; padding: 0 9px; color: var(--white); background: var(--blue); font-size: 11px; }
.performance-error { grid-column: 2; color: var(--track); font-size: 11px; }
.record-toggle { display: flex; gap: 6px; align-items: center; color: var(--muted); font-size: 11px; }
.record-toggle input { min-height: auto; }
.calculated-value { text-align: center; }
.calculated-value strong { display: block; font: 700 17px/1 "Bahnschrift", "Consolas", monospace; }
.calculated-value span { color: var(--muted); font-size: 10px; }

.button { min-height: 38px; padding: 8px 13px; border: 1px solid transparent; font-weight: 700; }
.button-primary { color: var(--white); background: var(--track); border-color: var(--track); }
.button-secondary { color: var(--white); background: var(--blue); border-color: var(--blue); }
.button-success { color: var(--white); background: var(--green); border-color: var(--green); }
.button-quiet { width: 100%; margin-top: 10px; color: #d8e1e3; background: transparent; border-color: #64777c; }
.button:hover:not(:disabled) { filter: brightness(.92); }

.data-tools { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; margin-bottom: 20px; }
.upload-panel, .search-panel { padding: 22px; background: var(--white); border-top: 4px solid var(--blue); box-shadow: var(--shadow); }
.upload-panel { border-top-color: var(--track); }
.data-tools h3 { margin: 8px 0; }
.data-tools p { margin: 0 0 16px; color: var(--muted); font-size: 13px; }
.file-control { display: flex; justify-content: space-between; align-items: center; min-height: 44px; margin-bottom: 10px; padding: 10px 12px; border: 1px dashed #93a7ac; }
.file-control input { width: 110px; min-height: auto; padding: 0; border: 0; }
.form-errors { margin-top: 12px; color: var(--track); font-size: 12px; line-height: 1.6; }
.search-count { margin-top: 14px !important; }
.toast { position: fixed; right: 22px; bottom: 22px; z-index: 50; max-width: min(420px, calc(100vw - 44px)); padding: 13px 16px; color: var(--white); background: var(--ink); border-left: 5px solid var(--green); box-shadow: 0 12px 32px rgba(0,0,0,.2); }
.toast.is-error { border-left-color: var(--track); }

button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible {
  outline: 3px solid var(--amber); outline-offset: 2px;
}

@media (max-width: 980px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; padding: 18px; border-right: 0; border-bottom: 5px solid var(--track); }
  .brand-block { padding-bottom: 16px; }
  .primary-nav { grid-template-columns: repeat(4, 1fr); margin: 16px 0; }
  .nav-item { grid-template-columns: 1fr; justify-items: center; gap: 4px; padding: 9px 4px; border-left: 0; border-bottom: 3px solid transparent; text-align: center; font-size: 12px; }
  .nav-item.is-active { border-bottom-color: var(--amber); }
  .session-panel { margin-top: 0; }
  .source-note { display: none; }
  .scoreboards { grid-template-columns: 1fr; }
}

@media (max-width: 680px) {
  .workspace { padding: 16px 12px 40px; }
  .timing-rail { grid-template-columns: 64px 1fr; margin-bottom: 24px; }
  .rail-clock { display: none; }
  .rail-title { padding: 12px 15px; border-right: 0; }
  .view-heading { align-items: stretch; flex-direction: column; gap: 16px; }
  .group-tabs { display: grid; grid-template-columns: repeat(4, 1fr); }
  .group-tab { min-width: 0; padding-inline: 7px; }
  .filter-row, .result-actions { flex-wrap: wrap; }
  .progress-summary { grid-template-columns: 1fr; }
  .progress-summary div { border-right: 0; border-bottom: 1px solid var(--line); }
  .progress-summary div:last-child { border-bottom: 0; }
  .entry-controls, .data-tools, .format-strip { grid-template-columns: 1fr; }
  .format-strip dl { grid-template-columns: repeat(2, 1fr); gap: 12px 0; }
  .result-sheet-header { align-items: stretch; flex-direction: column; }
  .result-actions .button { flex: 1; }
  .result-row { grid-template-columns: 1fr 76px 58px; }
  .performance-control { grid-column: 1 / -1; grid-row: 2; }
  .performance-error { grid-column: 1 / -1; }
  .record-toggle { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}