/* pitboard — editorial design system.
   Warm palette aligned with the product line (moonbeam/taskly values),
   full dark theme, zero dependencies. The masthead is a pit board. */

:root {
  --bg: #faf7f2;
  --surface: #fffdf9;
  --ink: #211e1a;
  --muted: #6f6960;
  --faint: #a89f92;
  --line: #e9e2d8;
  --line-strong: #d8cfbf;
  --accent: #c15f3c;
  --accent-deep: #a0431f;
  --accent-soft: #f7e5dd;
  --chip-bg: #f1ece2;
  --chip-line: #e2dacb;
  --new-bg: #e6f1e2;
  --new-ink: #2f6b36;
  --rising-bg: #fdeed2;
  --rising-ink: #92610c;
  --board-bg: #17140f;
  --board-line: #3a332a;
  --board-ink: #f5efe2;
  --radius: 16px;
  --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}
:root[data-theme="dark"] {
  --bg: #161411;
  --surface: #1f1c18;
  --ink: #ece7de;
  --muted: #a49d92;
  --faint: #6f6960;
  --line: #2e2a25;
  --line-strong: #413a31;
  --accent: #d08a6e;
  --accent-deep: #e2ab90;
  --accent-soft: #382920;
  --chip-bg: #28241f;
  --chip-line: #38322a;
  --new-bg: #233020;
  --new-ink: #a5cf90;
  --rising-bg: #382e18;
  --rising-ink: #e0b45c;
  --board-bg: #0c0a08;
  --board-line: #332c24;
  --board-ink: #f5efe2;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.7 ui-sans-serif, -apple-system, "PingFang SC", "Segoe UI", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
/* finish-line stripe */
body::before {
  content: "";
  display: block;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--accent) 0 14px, var(--ink) 14px 28px);
}
::selection { background: var(--accent-soft); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
code {
  background: var(--chip-bg);
  border: 1px solid var(--chip-line);
  border-radius: 6px;
  padding: 1px 7px;
  font: 12.5px/1.6 var(--mono);
}
main { max-width: 840px; margin: 0 auto; padding: 0 22px 72px; }

/* ---- nav ---- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: blur(12px) saturate(1.4);
  -webkit-backdrop-filter: blur(12px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  max-width: 840px; margin: 0 auto; padding: 13px 22px;
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.brand {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--ink); font-weight: 750; font-size: 18px; letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; color: var(--accent); }
.brand-mark { display: block; color: var(--ink); }
.brand:hover .brand-mark { color: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; }
.nav-links a {
  color: var(--muted); font-size: 14px; font-weight: 500;
  padding: 5px 11px; border-radius: 999px;
}
.nav-links a:hover { color: var(--ink); background: var(--chip-bg); text-decoration: none; }
.nav-links a.active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.theme-btn {
  margin-left: 6px;
  border: 1px solid var(--line); background: var(--surface); color: var(--muted);
  border-radius: 999px; width: 30px; height: 30px; cursor: pointer; font-size: 13px;
  transition: color .15s, border-color .15s;
}
.theme-btn:hover { color: var(--accent); border-color: var(--accent); }

/* ---- hero / masthead ---- */
.hero { padding: 46px 0 4px; }
.hero-slim { padding: 44px 0 2px; }
.hero-grid { display: flex; justify-content: space-between; align-items: stretch; gap: 32px; }
.hero-copy { min-width: 0; display: flex; flex-direction: column; justify-content: flex-end; }
.kicker {
  margin: 0 0 14px;
  font: 600 11px/1 var(--mono);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent);
}
.hero-date {
  margin: 0 0 12px;
  font-size: clamp(30px, 4.6vw, 42px);
  font-weight: 800;
  letter-spacing: -0.022em;
  line-height: 1.15;
}
.hero-date-s { font-size: clamp(26px, 3.6vw, 34px); }
.hero-wd { font-size: 0.44em; font-weight: 600; color: var(--muted); letter-spacing: 0.1em; }
.hero-meta {
  margin: 0;
  font: 500 13px/1.7 var(--mono);
  color: var(--muted);
  display: flex; gap: 9px; flex-wrap: wrap; align-items: center;
}
.hero-meta .dot { color: var(--faint); }
.hero-meta .chip { margin-left: 2px; }

/* the pit board */
.board {
  flex: none;
  align-self: center;
  background: var(--board-bg);
  color: var(--board-ink);
  border: 1px solid var(--board-line);
  border-radius: 14px;
  padding: 18px 26px 15px;
  min-width: 168px;
  text-align: center;
  box-shadow: 0 18px 40px -22px rgba(23, 20, 15, 0.55);
}
.board-label {
  font: 700 9.5px/1 var(--mono);
  letter-spacing: 0.34em;
  opacity: 0.5;
  margin-bottom: 9px;
}
.board-num {
  font: 750 56px/0.95 var(--mono);
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.board-sub {
  font: 600 9.5px/1.5 var(--mono);
  letter-spacing: 0.22em;
  opacity: 0.42;
  margin-top: 9px;
}

/* ---- cards ---- */
.cards { display: flex; flex-direction: column; gap: 16px; padding-top: 30px; }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 24px 18px;
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease;
}
.card:hover {
  transform: translateY(-2px);
  border-color: var(--line-strong);
  box-shadow: 0 2px 4px rgba(45, 33, 22, 0.05), 0 16px 36px -20px rgba(45, 33, 22, 0.28);
}
.card-top { display: flex; align-items: baseline; gap: 14px; }
.rank {
  font: 700 21px/1 var(--mono);
  color: var(--faint);
  font-variant-numeric: tabular-nums;
  min-width: 36px;
  transition: color .16s ease;
}
.card:hover .rank { color: var(--accent); }
.labels { display: flex; align-items: baseline; gap: 7px; flex-wrap: wrap; margin-left: auto; }
.heat {
  font: 700 13px/1 var(--mono);
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin-right: 4px;
}
.heatbar {
  height: 3px;
  background: var(--chip-bg);
  border-radius: 99px;
  margin: 12px 0 0;
  overflow: hidden;
}
.heatbar-fill {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--accent-soft), var(--accent));
}
.card-title {
  margin: 11px 0 6px;
  font-size: 20px;
  line-height: 1.42;
  font-weight: 680;
  letter-spacing: -0.014em;
}
.card-title a { color: var(--ink); }
.card-title a:hover { color: var(--accent-deep); text-decoration: none; }
.card-summary { margin: 0 0 14px; color: var(--muted); font-size: 15px; }
.chips { display: flex; flex-wrap: wrap; gap: 7px; }
.chip {
  display: inline-block;
  font: 500 12px/1 ui-sans-serif, -apple-system, "PingFang SC", sans-serif;
  color: var(--muted);
  background: var(--chip-bg);
  border: 1px solid var(--chip-line);
  border-radius: 999px;
  padding: 4px 11px;
  white-space: nowrap;
}
a.chip:hover { text-decoration: none; border-color: var(--accent); color: var(--accent); }
.chip-new { background: var(--new-bg); border-color: transparent; color: var(--new-ink); font-weight: 650; }
.chip-rising { background: var(--rising-bg); border-color: transparent; color: var(--rising-ink); font-weight: 650; }
.chip-llm { background: var(--accent-soft); border-color: transparent; color: var(--accent); font-weight: 650; }
.stars { color: var(--faint); font-family: var(--mono); font-size: 11.5px; }

/* ---- archive ---- */
.archive-list { list-style: none; margin: 26px 0 0; padding: 0; border-top: 1px solid var(--line); }
.arch-link {
  display: grid;
  grid-template-columns: 64px 148px 1fr auto;
  gap: 18px;
  align-items: baseline;
  padding: 15px 10px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  border-radius: 10px;
  transition: background .14s ease;
}
.arch-link:hover { background: var(--surface); text-decoration: none; }
.arch-ed {
  font: 600 12px/1.4 var(--mono);
  color: var(--accent);
  white-space: nowrap;
}
.arch-date { font-weight: 650; font-size: 15px; white-space: nowrap; }
.arch-title {
  color: var(--muted); font-size: 14px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.arch-count {
  font: 500 12px/1.4 var(--mono);
  color: var(--faint);
  white-space: nowrap;
}

/* ---- prose (about) ---- */
.prose { max-width: 720px; }
.prose h2 {
  margin: 40px 0 12px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 19px;
  letter-spacing: -0.01em;
}
.prose li { margin-bottom: 7px; }
.prose p { margin: 0 0 14px; }

.empty { color: var(--muted); padding: 36px 0; }

/* ---- footer ---- */
.footer {
  border-top: 1px solid var(--line);
  margin-top: 56px;
  padding: 30px 22px 46px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
  line-height: 2;
}
.footer-brand {
  font-weight: 750; font-size: 15px; color: var(--ink);
  letter-spacing: -0.02em; margin-bottom: 2px;
}
.muted { color: var(--faint); }
.footer .muted { font-size: 12.5px; }

/* ---- edition banner (SSE) ---- */
#edition-bar {
  display: none; position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; border-radius: 999px;
  padding: 10px 18px; font-size: 14px; gap: 12px; align-items: center;
  box-shadow: 0 10px 28px rgba(30, 20, 12, 0.3); z-index: 60;
}
#edition-bar button {
  border: none; background: rgba(255,255,255,.24); color: inherit;
  border-radius: 999px; padding: 4px 12px; cursor: pointer; font-size: 13px;
}

@media (max-width: 480px) {
  .nav-inner { padding: 10px 14px; }
  .brand { font-size: 16px; gap: 7px; }
  .brand-mark { width: 17px; height: 17px; }
  .nav-links a { padding: 4px 8px; font-size: 13px; }
  .theme-btn { margin-left: 2px; }
}

@media (max-width: 680px) {
  .hero-grid { flex-direction: column-reverse; align-items: flex-start; gap: 20px; }
  .board { align-self: flex-start; padding: 13px 20px 11px; min-width: 132px; }
  .board-num { font-size: 42px; }
  .hero { padding-top: 34px; }
  .card { padding: 17px 18px 15px; }
  .rank { min-width: 28px; font-size: 18px; }
  .arch-link { grid-template-columns: 1fr auto; grid-template-areas: "ed count" "date count" "title title"; gap: 4px 12px; }
  .arch-ed { grid-area: ed; }
  .arch-date { grid-area: date; }
  .arch-title { grid-area: title; white-space: normal; }
  .arch-count { grid-area: count; align-self: start; }
}

/* ---- quick strip (current hot top-5) ---- */
.quick { padding-top: 26px; }
.quick-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 12px; }
.quick-head .kicker { margin: 0; }
.quick-label { font-weight: 700; font-size: 15px; }
.quick-count {
  font: 600 11px/1 var(--mono); color: var(--faint); letter-spacing: 0.12em;
}
.quick-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px;
}
.quick-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  transition: transform .15s ease, border-color .15s ease;
}
.quick-item:hover { transform: translateY(-2px); border-color: var(--accent); }
.quick-link {
  display: flex; flex-direction: column; gap: 6px;
  color: inherit; text-decoration: none; height: 100%;
}
.quick-rank {
  font: 700 18px/1 var(--mono); color: var(--faint);
  transition: color .15s ease;
}
.quick-item:hover .quick-rank { color: var(--accent); }
.quick-name {
  font-size: 13px; font-weight: 600; line-height: 1.45; flex: 1;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.quick-heat { font: 600 11.5px/1 var(--mono); color: var(--accent); }

/* ---- toolbar: filter tabs + search ---- */
.toolbar {
  display: flex; justify-content: space-between; align-items: center;
  gap: 14px; flex-wrap: wrap;
  margin-top: 14px; padding: 10px 0 2px;
  border-top: 1px solid var(--line);
}
.tabs { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.tab {
  border: 1px solid var(--chip-line);
  background: var(--surface); color: var(--muted);
  border-radius: 999px; padding: 5px 13px;
  font: 500 13px/1.4 ui-sans-serif, -apple-system, "PingFang SC", sans-serif;
  cursor: pointer; transition: all .14s ease;
}
.tab:hover { color: var(--ink); border-color: var(--accent); }
.tab.active {
  background: var(--ink); border-color: var(--ink); color: var(--bg);
  font-weight: 650;
}
.tab-n {
  font: 600 10.5px/1 var(--mono);
  margin-left: 5px; opacity: 0.65;
  font-variant-numeric: tabular-nums;
}
.toolbar-hint { font: 500 11px/1.4 var(--mono); color: var(--faint); }
.search {
  flex: 1 1 220px; max-width: 320px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
  border-radius: 999px; padding: 8px 16px;
  font: 500 13.5px/1.4 ui-sans-serif, -apple-system, "PingFang SC", sans-serif;
  outline: none; transition: border-color .15s ease, box-shadow .15s ease;
}
.search::placeholder { color: var(--faint); }
.search:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

/* ---- card extras ---- */
.card-kind {
  font: 600 11px/1 ui-sans-serif, -apple-system, "PingFang SC", sans-serif;
  color: var(--faint);
  border: 1px solid var(--chip-line);
  border-radius: 6px; padding: 2px 7px;
  white-space: nowrap;
}
.card-kind.kind-github { color: var(--accent); border-color: var(--accent-soft); }
.card-time {
  margin-left: 2px;
  font: 500 11.5px/1 var(--mono);
  color: var(--faint);
  font-variant-numeric: tabular-nums;
}
.more-src { margin-top: 10px; }
.more-src summary {
  cursor: pointer; color: var(--accent); font-size: 13px; font-weight: 550;
  list-style: none; display: inline-block;
}
.more-src summary::before { content: "▸ "; }
.more-src[open] summary::before { content: "▾ "; }
.more-src summary:hover { text-decoration: underline; text-underline-offset: 3px; }
.src-list {
  margin: 10px 0 2px; padding: 0 0 0 4px;
  list-style: none;
  border-left: 2px solid var(--chip-line);
}
.src-list li { padding: 5px 0 5px 12px; font-size: 13.5px; }
.src-list a { color: var(--ink); }
.src-list a:hover { color: var(--accent); }
.src-dom { color: var(--faint); font: 400 11.5px/1.4 var(--mono); margin-left: 7px; }

@media (max-width: 860px) {
  .quick-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .quick-list { grid-template-columns: 1fr; }
  .quick-item { padding: 10px 12px; }
  .toolbar { flex-direction: column; align-items: stretch; }
  .search { max-width: none; }
  .toolbar-hint { display: none; }
}

/* ---- open source radar lane ---- */
.lane-head {
  margin-top: 44px; padding-top: 22px;
  border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 8px;
}
.lane-title { margin: 0; font-size: 24px; font-weight: 750; letter-spacing: -0.02em; }

/* ---- topic radar ---- */
.topics-grid { grid-template-columns: repeat(4, 1fr); }
.topic-list { list-style: none; margin: 24px 0 0; padding: 0; border-top: 1px solid var(--line); }
.topic-row {
  display: grid; grid-template-columns: 110px 1fr auto;
  gap: 16px; align-items: baseline;
  padding: 12px 6px; border-bottom: 1px solid var(--line);
}
.topic-date { font: 500 12px/1.5 var(--mono); color: var(--faint); }
.topic-row a { color: var(--ink); font-size: 14.5px; font-weight: 550; }
.topic-row a:hover { color: var(--accent); text-decoration: none; }
@media (max-width: 680px) {
  .topics-grid { grid-template-columns: repeat(2, 1fr); }
  .topic-row { grid-template-columns: 1fr; gap: 3px; }
}

.chip-progress { background: var(--accent-soft); border-color: transparent; color: var(--accent); font-weight: 650; }
.chip-seen { background: transparent; color: var(--faint); font-family: var(--mono); font-size: 11px; }

.bookmark-btn {
  margin-left: 8px; border: none; background: transparent; color: var(--faint);
  cursor: pointer; font-size: 15px; padding: 2px 4px;
}
.bookmark-btn:hover { color: var(--accent); }