:root {
  --paper: #f7f5f0;
  --ink: #17150f;
  --ink-soft: #5c574b;
  --ink-faint: #9a9384;
  --rule: #d8d3c6;
  --vermilion: #b5382a;
  --green: #2e6f4e;
  --serif: "Songti SC", "Noto Serif SC", "STSong", Georgia, "Times New Roman", serif;
  --sans: -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

.masthead {
  border-bottom: 3px double var(--ink);
  padding: 56px 24px 28px;
  text-align: center;
}
.masthead-inner { max-width: 860px; margin: 0 auto; }
.kicker {
  font-size: 12px;
  letter-spacing: 0.35em;
  color: var(--ink-soft);
  margin-bottom: 18px;
}
.masthead h1 {
  font-family: var(--serif);
  font-size: clamp(44px, 9vw, 84px);
  font-weight: 900;
  letter-spacing: 0.04em;
  line-height: 1;
}
.masthead h1 .star {
  color: var(--vermilion);
  font-size: 0.55em;
  vertical-align: 0.28em;
  padding: 0 0.12em;
}
.dateline {
  margin-top: 18px;
  font-family: var(--serif);
  font-size: 14px;
  color: var(--ink-soft);
  letter-spacing: 0.12em;
}

.tabs {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--paper);
  border-bottom: 1px solid var(--rule);
  display: flex;
  gap: 4px;
  padding: 0 16px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.tabs::-webkit-scrollbar { display: none; }
/* 居中但可滚动：justify-content center 在溢出时会把最左侧裁出可视区滑不回来 */
.tab:first-child { margin-left: auto; }
.tab:last-child { margin-right: auto; }
.tab {
  font-family: var(--serif);
  font-size: 16px;
  padding: 14px 16px 12px;
  border: none;
  border-bottom: 3px solid transparent;
  background: none;
  color: var(--ink-soft);
  cursor: pointer;
  white-space: nowrap;
}
.tab:hover { color: var(--ink); }
.tab.active {
  color: var(--ink);
  font-weight: 700;
  border-bottom-color: var(--vermilion);
}

.toolbar {
  max-width: 860px;
  margin: 28px auto 6px;
  padding: 0 24px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}
#search {
  flex: 1;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink);
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--rule);
  padding: 8px 2px;
  outline: none;
}
#search:focus { border-bottom-color: var(--ink); }
#search::placeholder { color: var(--ink-faint); }
.count {
  font-family: var(--serif);
  font-size: 13px;
  color: var(--ink-faint);
  white-space: nowrap;
}

main { max-width: 860px; margin: 0 auto; padding: 8px 24px 48px; }

.ranking { list-style: none; }
.row {
  border-bottom: 1px solid var(--rule);
}
.row-grid {
  display: grid;
  grid-template-columns: 84px 1fr auto;
  gap: 20px;
  align-items: baseline;
  padding: 22px 8px;
  transition: background 0.15s;
}
.row:hover .row-grid { background: rgba(23, 21, 15, 0.035); }

.repo-link { display: inline-block; }
.repo-link .repo-name { border-bottom: 2px solid rgba(181, 56, 42, 0.4); }
.repo-link .go {
  font-size: 13px;
  color: var(--vermilion);
  padding-left: 4px;
  vertical-align: 0.3em;
}
.repo-link:hover .repo-name {
  color: var(--vermilion);
  border-bottom-color: var(--vermilion);
}

.num {
  font-family: var(--serif);
  font-size: 40px;
  font-weight: 300;
  color: var(--ink-faint);
  text-align: right;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.row.top3 .num {
  font-weight: 700;
  color: var(--vermilion);
  font-size: 48px;
}

.body-col { min-width: 0; }
.repo-name {
  font-family: var(--serif);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.35;
  word-break: break-all;
}
.row.top3 .repo-name { font-size: 24px; }
.desc {
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.meta-col {
  text-align: right;
  white-space: nowrap;
}
.stars {
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}
.stars::after {
  content: " ★";
  font-size: 12px;
  color: var(--ink-faint);
}
.sub-meta {
  margin-top: 5px;
  font-size: 12px;
  color: var(--ink-faint);
}
.bili {
  display: inline-block;
  margin-top: 7px;
  font-size: 12px;
  color: var(--ink-soft);
  border: 1px solid var(--rule);
  border-radius: 2px;
  padding: 2px 8px;
  letter-spacing: 0.05em;
}
.bili:hover {
  color: #fff;
  background: var(--vermilion);
  border-color: var(--vermilion);
}
.delta-up { color: var(--vermilion); font-weight: 600; }
.delta-down { color: var(--green); font-weight: 600; }
.delta-new { color: var(--vermilion); letter-spacing: 0.1em; }
.lang-tag { padding-left: 8px; }

.empty {
  text-align: center;
  padding: 64px 0;
  color: var(--ink-faint);
  font-family: var(--serif);
}

footer {
  border-top: 3px double var(--ink);
  padding: 28px 24px 48px;
  text-align: center;
  font-size: 12.5px;
  line-height: 2;
  color: var(--ink-soft);
}
footer a { border-bottom: 1px solid var(--rule); }
footer a:hover { color: var(--ink); border-bottom-color: var(--ink); }

@media (max-width: 560px) {
  .masthead { padding-top: 36px; }
  .row-grid {
    grid-template-columns: 44px 1fr;
    gap: 12px;
    padding: 18px 2px;
  }
  .num { font-size: 26px; }
  .row.top3 .num { font-size: 30px; }
  .repo-name { font-size: 18px; }
  .row.top3 .repo-name { font-size: 19px; }
  .meta-col {
    grid-column: 2;
    text-align: left;
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-top: 4px;
  }
  .sub-meta { margin-top: 0; }
  .bili { margin-top: 0; margin-left: auto; }
}