:root {
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-soft: #f9fafb;
  --line: #e4e7ec;
  --line-strong: #cbd5e1;
  --text: #111827;
  --muted: #667085;
  --faint: #98a2b3;
  --accent: #0f766e;
  --accent-2: #2563eb;
  --warning: #b45309;
  --danger: #c2410c;
  --success: #15803d;
  --shadow: 0 18px 48px rgba(15, 23, 42, 0.08), 0 1px 2px rgba(15, 23, 42, 0.04);
  --radius: 8px;
  --sans: "Avenir Next", "Segoe UI", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f141b;
    --panel: #171d25;
    --panel-soft: #111821;
    --line: #293344;
    --line-strong: #3b4758;
    --text: #f8fafc;
    --muted: #a1aab8;
    --faint: #737f91;
    --accent: #2dd4bf;
    --accent-2: #60a5fa;
    --warning: #f59e0b;
    --danger: #fb923c;
    --success: #4ade80;
    --shadow: 0 18px 58px rgba(0, 0, 0, 0.32);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  font-family: var(--sans);
  line-height: 1.55;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.08), transparent 34%),
    linear-gradient(315deg, rgba(15, 118, 110, 0.08), transparent 34%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
}

button,
a {
  font: inherit;
}

button {
  min-height: 2.5rem;
}

.app-shell {
  width: min(1240px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 42px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 92%, transparent);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.eyebrow {
  margin: 0 0 3px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2 {
  letter-spacing: -0.03em;
}

h1 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.05;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.875rem;
}

.stat-line,
.user-badge {
  display: inline-flex;
  align-items: center;
  min-height: 2.35rem;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-soft);
  white-space: nowrap;
}

.user-badge {
  color: var(--text);
  font-weight: 800;
}

.ghost-link,
.ghost-button,
.sync-button,
.primary-tabs button,
.filter-tabs button,
.load-more {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.14s, border-color 0.14s, background 0.14s, color 0.14s, box-shadow 0.14s;
}

.ghost-link,
.ghost-button {
  display: inline-flex;
  align-items: center;
  min-height: 2.35rem;
  padding: 0 12px;
  font-weight: 800;
}

.ghost-button {
  color: var(--muted);
}

.sync-button {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 2.35rem;
  padding: 0 13px;
  border-color: color-mix(in srgb, var(--accent) 38%, var(--line));
  color: var(--accent);
  font-weight: 900;
}

.sync-button:hover:not(:disabled),
.ghost-link:hover,
.ghost-button:hover,
.primary-tabs button:hover,
.filter-tabs button:hover,
.load-more:hover:not(:disabled) {
  transform: translateY(-1px);
  border-color: var(--accent);
  box-shadow: 0 10px 24px rgba(15, 118, 110, 0.1);
}

.sync-button:disabled,
.load-more:disabled {
  cursor: not-allowed;
  opacity: 0.58;
  transform: none;
  box-shadow: none;
}

.workspace {
  display: grid;
  grid-template-columns: 248px minmax(0, 1fr);
  gap: 18px;
  margin-top: 18px;
  align-items: start;
}

.rail {
  position: sticky;
  top: 16px;
  display: grid;
  gap: 12px;
}

.primary-tabs,
.source-panel,
.content {
  background: color-mix(in srgb, var(--panel) 94%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.primary-tabs {
  display: grid;
  gap: 6px;
  padding: 8px;
}

.primary-tabs button {
  width: 100%;
  padding: 0 12px;
  text-align: left;
  color: var(--muted);
  font-weight: 900;
}

.primary-tabs button[aria-selected="true"] {
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  border-color: transparent;
  color: #fff;
  box-shadow: 0 12px 26px color-mix(in srgb, var(--accent) 20%, transparent);
}

.source-panel {
  padding: 12px;
}

.filter-title {
  margin-bottom: 9px;
  color: var(--faint);
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.filter-tabs {
  display: grid;
  gap: 7px;
  max-height: calc(100dvh - 250px);
  overflow: auto;
  padding-right: 2px;
}

.filter-tabs button {
  width: 100%;
  padding: 8px 10px;
  text-align: left;
  color: var(--muted);
  background: transparent;
}

.filter-tabs button[aria-selected="true"] {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: color-mix(in srgb, var(--accent) 9%, var(--panel));
  font-weight: 900;
}

.content {
  overflow: hidden;
}

.content-head {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 20px 22px 16px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel-soft) 68%, transparent), var(--panel));
}

.section-kicker {
  margin: 0 0 4px;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.11em;
}

.content h2 {
  margin: 0;
  font-size: clamp(1.35rem, 2.5vw, 2rem);
  line-height: 1.15;
}

.result-meta {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.875rem;
  text-align: right;
  white-space: nowrap;
}

.feed,
.gh-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.feed li,
.gh-list > li {
  border-bottom: 1px solid var(--line);
}

.feed li:last-child,
.gh-list > li:last-child {
  border-bottom: none;
}

.row-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px 18px;
  padding: 17px 22px;
  min-height: 74px;
  color: inherit;
  text-decoration: none;
  background: var(--panel);
}

.row-link:hover {
  background: color-mix(in srgb, var(--accent) 6%, var(--panel));
}

.row-title {
  min-width: 0;
  color: var(--text);
  font-size: 1rem;
  font-weight: 850;
  line-height: 1.45;
}

.row-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  align-items: center;
  color: var(--muted);
  font-size: 0.8125rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.45rem;
  padding: 0 8px;
  border: 1px solid color-mix(in srgb, var(--accent) 26%, var(--line));
  border-radius: 999px;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, var(--panel));
  font-size: 0.75rem;
  font-weight: 900;
  white-space: nowrap;
}

.time {
  white-space: nowrap;
}

.gh-panel {
  background: var(--panel);
}

.batch-note {
  margin: 0;
  padding: 12px 22px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.875rem;
}

.gh-row {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 14px;
  padding: 18px 22px;
}

.gh-rank {
  color: var(--accent-2);
  font-size: 1.55rem;
  font-weight: 950;
  line-height: 1;
}

.gh-title {
  color: var(--text);
  font-weight: 900;
  text-decoration: none;
}

.gh-title:hover {
  color: var(--accent);
}

.gh-desc {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.94rem;
}

.gh-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  margin-top: 9px;
  color: var(--faint);
  font-size: 0.8125rem;
}

.state-msg {
  margin: 0;
  padding: 52px 20px;
  color: var(--muted);
  text-align: center;
}

.state-msg.err {
  color: var(--danger);
  border-bottom: 1px solid var(--line);
}

.pager {
  display: flex;
  justify-content: center;
  padding: 16px;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.load-more {
  min-width: 164px;
  padding: 0 18px;
  color: var(--accent);
  font-weight: 900;
}

@media (max-width: 760px) {
  .app-shell {
    width: min(100% - 24px, 680px);
    padding-top: 12px;
  }

  .topbar {
    align-items: start;
    flex-direction: column;
  }

  .actions {
    justify-content: flex-start;
  }

  .workspace {
    display: block;
    margin-top: 14px;
  }

  .rail {
    position: sticky;
    top: 0;
    z-index: 20;
    display: block;
    margin: 0 -12px 14px;
    padding: 8px 12px 10px;
    background: color-mix(in srgb, var(--bg) 90%, transparent);
    backdrop-filter: blur(14px);
  }

  .primary-tabs {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    box-shadow: none;
  }

  .primary-tabs button {
    text-align: center;
    padding: 0 6px;
  }

  .source-panel {
    margin-top: 8px;
    box-shadow: none;
  }

  .filter-tabs {
    display: flex;
    overflow-x: auto;
    max-height: none;
    padding-bottom: 2px;
    scrollbar-width: none;
  }

  .filter-tabs::-webkit-scrollbar {
    display: none;
  }

  .filter-tabs button {
    flex: 0 0 auto;
    width: auto;
    white-space: nowrap;
  }

  .content-head,
  .row-link,
  .gh-row {
    padding-left: 16px;
    padding-right: 16px;
  }

  .content-head {
    align-items: flex-start;
    flex-direction: column;
    gap: 8px;
  }

  .result-meta {
    text-align: left;
  }

  .row-link {
    display: block;
  }

  .row-meta {
    margin-top: 8px;
  }
}