:root {
  --bg: #081014;
  --surface: #0c151a;
  --surface-raised: #101c22;
  --border: #314047;
  --border-soft: #202e34;
  --text: #f2f5f3;
  --muted: #89979b;
  --muted-strong: #b7c0c1;
  --accent: #45d39b;
  --accent-soft: #102c24;
  --danger: #ff8179;
  --warning: #e5b96f;
  --radius: 0.375rem;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", ui-sans-serif, system-ui, sans-serif;
  color: var(--text);
  background: var(--bg);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 20rem; min-height: 100vh; background: var(--bg); color: var(--text); }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; }
a { color: inherit; }

.skip-link {
  position: fixed;
  z-index: 30;
  top: var(--space-3);
  left: var(--space-3);
  padding: var(--space-2) var(--space-3);
  transform: translateY(-180%);
  border-radius: var(--radius);
  background: var(--text);
  color: var(--bg);
}
.skip-link:focus { transform: translateY(0); }

.shell { width: min(90rem, calc(100% - 2rem)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--border-soft); background: #091217; }
.header-inner { display: flex; min-height: 4.75rem; align-items: center; justify-content: space-between; gap: var(--space-5); }
.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand strong { font-size: 1.5rem; letter-spacing: -0.025em; }
.header-status { display: flex; align-items: center; gap: var(--space-6); color: var(--muted-strong); font-size: 0.875rem; }
.header-status time { padding-left: var(--space-6); border-left: 1px solid var(--border); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.connection { display: inline-flex; align-items: center; gap: var(--space-2); }
.status-dot { width: 0.625rem; height: 0.625rem; border-radius: 50%; background: var(--warning); box-shadow: 0 0 0 0.25rem rgba(229, 185, 111, 0.12); }
.connection.online .status-dot { background: var(--accent); box-shadow: 0 0 0 0.25rem rgba(69, 211, 155, 0.12); }
.connection.error .status-dot { background: var(--danger); box-shadow: 0 0 0 0.25rem rgba(255, 129, 121, 0.12); }

.page { display: grid; gap: var(--space-4); padding-block: 1.125rem 2rem; }
.panel { border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); }
.panel-heading { display: flex; align-items: center; justify-content: space-between; gap: var(--space-5); padding: 1.5rem 2rem 1.25rem; }
.heading-line { display: flex; align-items: center; gap: var(--space-3); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 { margin-bottom: 0; font-size: 1.35rem; line-height: 1.2; letter-spacing: -0.02em; }
h3 { margin-bottom: 0; font-size: 1rem; }
.panel-heading p { margin: var(--space-2) 0 0 2rem; color: var(--muted); font-size: 0.8125rem; }
.refresh-button, .raw-status-link {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 0.8125rem;
  text-decoration: none;
  cursor: pointer;
}
.refresh-button:hover, .raw-status-link:hover { color: var(--accent); }

.scan-control { padding-bottom: 1.5rem; }
.scan-heading { border-bottom: 1px solid var(--border-soft); }
.scan-summary { display: grid; grid-template-columns: minmax(0, 1fr) 18rem; gap: 3rem; align-items: center; padding: 2rem; }
.scan-kicker { margin-bottom: var(--space-3); color: var(--muted); font-size: 0.8125rem; }
.scan-value { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--space-4); }
.scan-value strong { font-size: clamp(1.5rem, 3vw, 2.15rem); letter-spacing: -0.025em; }
.scan-value > span { color: var(--accent); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: clamp(1.2rem, 2.5vw, 1.75rem); font-weight: 700; }
.scan-value .scan-percent { padding-left: var(--space-4); border-left: 1px solid var(--border); }
.scan-action { min-width: 0; }
.update-button {
  display: flex;
  width: 100%;
  min-height: 4rem;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: 0.875rem 1.25rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: var(--accent);
  color: #04110c;
  text-align: left;
  cursor: pointer;
}
.update-button strong { font-size: 0.95rem; }
.update-button small { margin-top: 0.25rem; color: #123a2d; font-size: 0.72rem; }
.update-button:hover:not(:disabled) { background: #62dfad; }
.update-button:disabled { border-color: var(--border); background: #182126; color: var(--muted); cursor: wait; }
.update-button:disabled small { color: #78878b; }
.scan-action p { margin: var(--space-2) 0 0; color: var(--muted); font-size: 0.75rem; line-height: 1.45; }
.scan-action p.error { color: var(--danger); }

.progress-track { height: 0.625rem; margin: 0 2rem; overflow: hidden; border-radius: 999px; background: #283238; }
.progress-track span { display: block; width: var(--progress, 0%); height: 100%; border-radius: inherit; background: var(--accent); transition: width 300ms ease; }
.phase-list { display: grid; grid-template-columns: repeat(4, 1fr); margin: 1.75rem 2rem 0; padding: 0; list-style: none; }
.phase-list li { position: relative; display: flex; align-items: center; gap: var(--space-3); color: var(--muted); font-size: 0.8125rem; }
.phase-list li:not(:last-child)::after { position: absolute; z-index: 0; top: 50%; right: 1rem; left: 3.2rem; height: 1px; background: var(--border); content: ""; }
.phase-list li > * { position: relative; z-index: 1; background: var(--surface); }
.phase-list li span { display: grid; width: 2rem; height: 2rem; place-items: center; border: 1px solid var(--border); border-radius: 50%; font-family: ui-monospace, monospace; }
.phase-list li strong { padding-right: var(--space-3); font-weight: 600; }
.phase-list li.done, .phase-list li.current { color: var(--text); }
.phase-list li.done span, .phase-list li.current span { border-color: var(--accent); background: var(--accent); color: #07150f; }
.phase-list li.done:not(:last-child)::after { background: var(--accent); }
.scan-meta { display: flex; align-items: center; gap: 3rem; margin: 1.75rem 2rem 0; padding-top: 1.25rem; border-top: 1px solid var(--border-soft); }
.scan-meta div { display: flex; align-items: baseline; gap: var(--space-3); }
.scan-meta .meta-end { margin-left: auto; }
.scan-meta dt { color: var(--muted); font-size: 0.75rem; }
.scan-meta dd { margin: 0; color: var(--muted-strong); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.8125rem; }

.playlist-list { border-top: 1px solid var(--border-soft); }
.playlist-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: var(--space-6); align-items: center; min-height: 6rem; padding: 1.125rem 1.5rem; border-bottom: 1px solid var(--border-soft); }
.playlist-row:last-child { border-bottom: 0; }
.playlist-row.featured { margin: 0 1.5rem; padding-inline: 1.5rem; border: 1px solid var(--border); border-left: 0.375rem solid var(--accent); background: var(--surface-raised); }
.playlist-row.featured + .playlist-row { margin-top: 1rem; }
.playlist-title { display: flex; flex-wrap: wrap; align-items: center; gap: var(--space-3); margin-bottom: var(--space-3); }
.playlist-row.featured h3 { font-size: 1.35rem; }
.tag { padding: 0.2rem 0.55rem; border: 1px solid #2e5c4b; border-radius: var(--radius); background: var(--accent-soft); color: var(--accent); font-size: 0.6875rem; }
.playlist-note { color: var(--muted); font-size: 0.75rem; }
.playlist-copy { min-width: 0; }
.playlist-description { margin: 0; color: var(--muted-strong); font-size: 0.8125rem; line-height: 1.55; }
.playlist-actions { display: flex; align-items: center; gap: var(--space-2); }
.copy-button, .download-link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-size: 0.8125rem;
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
}
.copy-button:hover, .download-link:hover { border-color: var(--accent); color: var(--accent); }
.copy-button.primary { min-width: 8.75rem; border-color: var(--accent); background: var(--accent); color: #06140e; }
.copy-button.format-primary { border-color: #2e5c4b; background: var(--accent-soft); color: var(--accent); }
.copy-button.copied { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.copy-button.copy-failed { border-color: var(--danger); color: var(--danger); }
.download-link { color: var(--muted); }

.results-heading { border-bottom: 1px solid var(--border-soft); }
.result-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.result-item { min-width: 0; min-height: 8rem; padding: 1.5rem 2rem; border-right: 1px solid var(--border-soft); }
.result-item:last-child { border-right: 0; }
.result-item strong, .result-item span, .result-item small { display: block; }
.result-item strong { margin-bottom: var(--space-2); color: var(--accent); font-size: clamp(1.8rem, 3vw, 2.6rem); line-height: 1; letter-spacing: -0.04em; }
.result-item span { color: var(--muted-strong); font-size: 0.875rem; }
.result-item small { margin-top: var(--space-3); color: var(--muted); font-size: 0.75rem; }
.published-at strong { margin-top: var(--space-3); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 1.25rem; letter-spacing: 0; }
.resolution-strip { display: flex; flex-wrap: wrap; gap: var(--space-2); padding: 0 2rem 1.5rem; }
.resolution-strip span { padding: 0.35rem 0.65rem; border: 1px solid var(--border); border-radius: 999px; color: var(--muted-strong); font-family: ui-monospace, monospace; font-size: 0.7rem; }
.release-banner { margin: 0 2rem 1.25rem; padding: 0.875rem 1rem; border: 1px solid #735d38; border-left: 0.25rem solid var(--warning); border-radius: var(--radius); background: #231d14; color: #f0d29d; font-size: 0.8125rem; line-height: 1.55; }
.release-banner[hidden] { display: none; }
.stability-strip { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--border-soft); }
.stability-strip > div { min-width: 0; padding: 1.125rem 2rem; border-right: 1px solid var(--border-soft); }
.stability-strip > div:last-child { border-right: 0; }
.stability-strip span, .stability-strip small { display: block; color: var(--muted); font-size: 0.72rem; }
.stability-strip strong { display: block; margin-top: var(--space-2); color: var(--text); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 1.15rem; }
.stability-strip small { margin-top: var(--space-2); line-height: 1.4; }
.governance-strip { display: grid; grid-template-columns: repeat(3, minmax(6rem, 0.7fr)) minmax(12rem, 1.5fr) auto; align-items: stretch; border-top: 1px solid var(--border-soft); }
.governance-strip > div { min-width: 0; padding: 1.125rem 2rem; border-right: 1px solid var(--border-soft); }
.governance-strip span, .governance-strip small { display: block; color: var(--muted); font-size: 0.72rem; }
.governance-strip strong { display: block; margin-top: var(--space-2); color: var(--muted-strong); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 1.15rem; }
.governance-strip small { margin-top: var(--space-2); }
.feed-health-link { display: grid; min-width: 9rem; place-items: center; padding: 1rem 1.5rem; color: var(--muted); font-size: 0.75rem; text-align: center; text-decoration: none; }
.feed-health-link:hover { color: var(--accent); }

.site-footer { border-top: 1px solid var(--border-soft); background: #091217; }
.footer-inner { display: flex; min-height: 4.5rem; align-items: center; gap: var(--space-6); color: var(--muted); font-size: 0.75rem; }
.footer-inner span { margin-right: auto; }
.footer-inner a { text-decoration: none; }
.footer-inner a:hover { color: var(--accent); }
.toast { position: fixed; z-index: 40; right: 1.25rem; bottom: 1.25rem; max-width: min(22rem, calc(100% - 2rem)); padding: 0.75rem 1rem; transform: translateY(1rem); border: 1px solid var(--border); border-radius: var(--radius); background: #172229; color: var(--text); font-size: 0.8125rem; opacity: 0; pointer-events: none; transition: opacity 160ms ease, transform 160ms ease; }
.toast.visible { transform: translateY(0); opacity: 1; }
.toast.error { border-color: var(--danger); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

@media (max-width: 900px) {
  .scan-summary { grid-template-columns: 1fr; gap: 1.5rem; }
  .scan-action { max-width: 24rem; }
  .playlist-row { grid-template-columns: 1fr; }
  .playlist-actions { justify-content: flex-start; }
  .result-grid { grid-template-columns: repeat(2, 1fr); }
  .result-item:nth-child(2) { border-right: 0; }
  .result-item:nth-child(-n + 2) { border-bottom: 1px solid var(--border-soft); }
  .governance-strip { grid-template-columns: repeat(3, 1fr); }
  .stability-strip { grid-template-columns: repeat(2, 1fr); }
  .stability-strip > div:nth-child(2) { border-right: 0; }
  .stability-strip > div:nth-child(-n + 2) { border-bottom: 1px solid var(--border-soft); }
  .governance-strip .feed-summary { grid-column: span 2; border-top: 1px solid var(--border-soft); }
  .feed-health-link { border-top: 1px solid var(--border-soft); }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 1rem, 90rem); }
  .header-inner { min-height: 4rem; }
  .brand strong { font-size: 1.15rem; }
  .header-status { gap: var(--space-3); }
  .header-status time { display: none; }
  .page { gap: var(--space-2); padding-block: var(--space-2) var(--space-4); }
  .panel-heading, .scan-summary { padding: 1.25rem; }
  .panel-heading { align-items: flex-start; }
  .panel-heading p { margin-left: 0; }
  .refresh-button { padding-top: 0.25rem; }
  .scan-value { gap: var(--space-2) var(--space-3); }
  .scan-value .scan-percent { padding-left: var(--space-3); }
  .progress-track { margin-inline: 1.25rem; }
  .phase-list { margin: 1.4rem 1.25rem 0; }
  .phase-list li { flex-direction: column; align-items: flex-start; gap: var(--space-2); }
  .phase-list li:not(:last-child)::after { top: 1rem; right: 0.5rem; left: 2.25rem; }
  .phase-list li strong { padding-right: var(--space-2); font-size: 0.7rem; }
  .scan-meta { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); margin: 1.25rem; }
  .scan-meta div { display: block; }
  .scan-meta dt { margin-bottom: var(--space-2); }
  .scan-meta .meta-end { margin-left: 0; }
  .playlist-row, .playlist-row.featured { margin-inline: 0.75rem; padding: 1rem; }
  .playlist-row.featured + .playlist-row { margin-top: 0.75rem; }
  .playlist-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .copy-button, .download-link { width: 100%; }
  .result-grid { grid-template-columns: 1fr 1fr; }
  .result-item { min-height: 7rem; padding: 1.25rem; }
  .result-item strong { font-size: 1.8rem; }
  .resolution-strip { padding-inline: 1.25rem; }
  .release-banner { margin-inline: 1.25rem; }
  .stability-strip > div { padding: 1rem 1.25rem; }
  .governance-strip { grid-template-columns: 1fr 1fr; }
  .governance-strip > div { padding: 1rem 1.25rem; }
  .governance-strip > div:nth-child(2) { border-right: 0; }
  .governance-strip > div:nth-child(-n + 2) { border-bottom: 1px solid var(--border-soft); }
  .governance-strip .feed-summary { grid-column: auto; border-top: 0; }
  .feed-health-link { grid-column: 1 / -1; min-width: 0; border-top: 1px solid var(--border-soft); }
  .footer-inner { flex-wrap: wrap; gap: var(--space-4); padding-block: var(--space-4); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; }
}