:root {
  --bg: #000000;
  --bg-elev: #050505;
  --panel: #0a0a0a;
  --panel-2: #121212;
  --ink: #f4f4f4;
  --ink-soft: #c8c8c8;
  --ink-faint: #8a8a8a;
  --line: #1f1f1f;
  --line-soft: #2a2a2a;
  --yellow: #fff16a;
  --yellow-soft: #f1e25d;
  --yellow-ink: #131313;
  --op: #f29c38;
  --op-bg: rgba(242, 156, 56, 0.14);
  --gt: #74d89a;
  --gt-bg: rgba(116, 216, 154, 0.14);
  --pt: #f2cb51;
  --pt-bg: rgba(242, 203, 81, 0.14);
  --qg: #77a9ff;
  --qg-bg: rgba(119, 169, 255, 0.14);
  --qo: #bb9cff;
  --qo-bg: rgba(187, 156, 255, 0.14);
  --serif: "Cormorant Garamond", "Noto Serif SC", Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  --zh-serif: "Noto Serif SC", "Songti SC", "Source Han Serif SC", serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: #000;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  padding-bottom: 80px;
  -webkit-font-smoothing: antialiased;
}

.hero {
  background: #000;
  border-bottom: 1px solid var(--line);
  padding: 64px 32px 40px;
}
.hero-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 460px);
  gap: 28px;
  align-items: start;
}
.hero-copy {
  text-align: left;
  padding-top: 8px;
}
.hero h1 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 56px;
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}
.hero h1 em { color: var(--yellow); font-style: italic; }
.hero .subtitle {
  font-family: var(--zh-serif);
  font-size: 18px;
  color: var(--ink-soft);
  margin-bottom: 4px;
}
.hero .meta {
  font-size: 13px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-top: 12px;
}
.converter {
  background: #0a0a0a;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.35);
}
.converter-kicker {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--yellow);
  margin-bottom: 10px;
}
.converter h2 {
  font-size: 28px;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}
.converter-note {
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 14px;
}
.converter textarea {
  width: 100%;
  resize: vertical;
  min-height: 118px;
  background: #050505;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 16px;
  font: inherit;
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.converter textarea:focus {
  border-color: var(--yellow);
  box-shadow: 0 0 0 3px rgba(255, 241, 106, 0.12);
}
.converter-actions {
  display: flex;
  gap: 10px;
  margin-top: 12px;
}
.converter-actions button {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 9px 14px;
  background: var(--yellow);
  color: var(--yellow-ink);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}
.converter-actions .ghost {
  background: transparent;
  color: var(--ink);
}
.converter-output {
  margin-top: 14px;
  min-height: 92px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 14px 16px;
  background: #050505;
  color: var(--ink);
  line-height: 1.55;
  white-space: pre-wrap;
}
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.94);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
  padding: 14px 32px;
}
.nav-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.search {
  flex: 1;
  min-width: 220px;
  position: relative;
}
.search input {
  width: 100%;
  background: #0a0a0a;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px 10px 40px;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink);
  outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.search input:focus {
  border-color: var(--yellow);
  box-shadow: 0 0 0 3px rgba(255, 241, 106, 0.16);
}
.search svg {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-faint);
}
.search kbd {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: var(--ink-faint);
  background: #050505;
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 6px;
}

.pills,
.syns {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
.pill,
.syn,
.audio-toggle button {
  font-family: var(--sans);
  border: 1px solid var(--line);
  background: var(--panel);
  cursor: pointer;
  transition: all .18s ease;
}
.pill {
  font-size: 12px;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 999px;
  color: var(--ink-soft);
  user-select: none;
  white-space: nowrap;
}
.pill:hover { border-color: var(--yellow); color: var(--ink); }
.pill.active[data-cat="all"] { background: var(--yellow); color: var(--yellow-ink); border-color: var(--yellow); }
.pill.active[data-cat="op"] { background: var(--op); color: #161616; border-color: var(--op); }
.pill.active[data-cat="gt"] { background: var(--gt); color: #161616; border-color: var(--gt); }
.pill.active[data-cat="pt"] { background: var(--pt); color: #161616; border-color: var(--pt); }
.pill.active[data-cat="qg"] { background: var(--qg); color: #161616; border-color: var(--qg); }
.pill.active[data-cat="qo"] { background: var(--qo); color: #161616; border-color: var(--qo); }
.pill .count {
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
  margin-left: 4px;
}

main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 32px;
}
.section {
  margin-top: 56px;
  scroll-margin-top: 80px;
}
.section:first-child { margin-top: 32px; }
.section-header {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.section-header h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 36px;
  letter-spacing: -0.01em;
}
.section-header .zh {
  font-family: var(--zh-serif);
  font-size: 18px;
  color: var(--ink-soft);
}
.section-header .count {
  margin-left: auto;
  font-size: 13px;
  color: var(--ink-faint);
  letter-spacing: 0.08em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}
.card {
  background: #0a0a0a;
  border: 1px solid #1f1f1f;
  border-radius: 20px;
  padding: 16px 16px 14px;
  position: relative;
  overflow: hidden;
  min-height: 248px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.card:hover {
  background: var(--yellow);
  border-color: var(--yellow);
  color: var(--yellow-ink);
  transform: translateY(-4px) rotate(-0.3deg);
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.55);
}
.card::before {
  content: "";
  position: absolute;
  inset: auto 14px 0 14px;
  height: 4px;
  border-radius: 999px;
  opacity: 0.95;
}
.card[data-cat="op"]::before { background: var(--op); }
.card[data-cat="gt"]::before { background: var(--gt); }
.card[data-cat="pt"]::before { background: var(--pt); }
.card[data-cat="qg"]::before { background: var(--qg); }
.card[data-cat="qo"]::before { background: var(--qo); }

.card-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mini-label {
  font-size: 10px;
  line-height: 1;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.mini-dot {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  background: var(--ink-faint);
  opacity: 0.75;
}

.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.word-cluster {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  min-width: 0;
}

.word-copy {
  min-width: 0;
}

.word-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.word-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 999px;
  border: 1.5px solid var(--ink-soft);
  margin-top: 3px;
  flex-shrink: 0;
}

.word-mark-ring {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  border: 1.5px solid currentColor;
  opacity: 0.72;
}
.word {
  font-family: var(--sans);
  font-weight: 700;
  font-size: 28px;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 6px;
}
.tag {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 8px;
  border-radius: 999px;
  border: 1px solid currentColor;
}
.card[data-cat="op"] .tag { background: var(--op-bg); color: var(--op); }
.card[data-cat="gt"] .tag { background: var(--gt-bg); color: var(--gt); }
.card[data-cat="pt"] .tag { background: var(--pt-bg); color: var(--pt); }
.card[data-cat="qg"] .tag { background: var(--qg-bg); color: var(--qg); }
.card[data-cat="qo"] .tag { background: var(--qo-bg); color: var(--qo); }

.def-zh {
  font-family: var(--zh-serif);
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}
.def-en {
  font-size: 12px;
  color: var(--ink-faint);
  margin-bottom: 0;
  line-height: 1.4;
}
.example {
  position: relative;
  border: 1px solid #1d1d1d;
  background: #111;
  padding: 12px 38px 12px 12px;
  border-radius: 14px;
  margin-top: auto;
}
.example .en {
  font-family: var(--sans);
  font-style: normal;
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
}
.example .zh {
  font-family: var(--zh-serif);
  font-size: 12px;
  color: var(--ink-soft);
  margin-top: 4px;
  line-height: 1.4;
}

.syn {
  font-size: 11px;
  color: var(--ink-soft);
  background: #101010;
  border-color: var(--line-soft);
  padding: 5px 10px;
  border-radius: 999px;
  user-select: none;
  font-weight: 500;
}
.syn:hover {
  border-color: var(--yellow);
  color: var(--ink);
}
.card[data-cat="op"] .syn.active { background: var(--op); color: #fff; border-color: var(--op); }
.card[data-cat="gt"] .syn.active { background: var(--gt); color: #fff; border-color: var(--gt); }
.card[data-cat="pt"] .syn.active { background: var(--pt); color: #fff; border-color: var(--pt); }
.card[data-cat="qg"] .syn.active { background: var(--qg); color: #fff; border-color: var(--qg); }
.card[data-cat="qo"] .syn.active { background: var(--qo); color: #fff; border-color: var(--qo); }

.syn-panel {
  margin-top: 10px;
  padding: 10px 12px;
  background: #111;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  animation: fadeIn .18s ease-out;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-2px); }
  to { opacity: 1; transform: translateY(0); }
}
.syn-panel-head {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px dashed var(--line);
}
.sp-word {
  font-family: var(--sans);
  font-size: 16px;
  font-weight: 700;
}
.sp-vs,
.sp-label {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
  text-transform: uppercase;
}
.sp-row {
  display: flex;
  gap: 8px;
  margin-bottom: 4px;
  font-size: 12.5px;
  line-height: 1.45;
}
.sp-row:last-child { margin-bottom: 0; }
.sp-label {
  flex-shrink: 0;
  width: 28px;
  padding-top: 2px;
  font-weight: 600;
}
.card[data-cat="op"] .sp-label { color: var(--op); }
.card[data-cat="gt"] .sp-label { color: var(--gt); }
.card[data-cat="pt"] .sp-label { color: var(--pt); }
.card[data-cat="qg"] .sp-label { color: var(--qg); }
.card[data-cat="qo"] .sp-label { color: var(--qo); }
.sp-val,
.sp-empty {
  font-family: var(--zh-serif);
}
.sp-empty {
  font-size: 12px;
  color: var(--ink-faint);
  font-style: italic;
}

.speak {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: none;
  background: #111;
  color: var(--ink-soft);
  cursor: pointer;
  padding: 0;
  margin-left: 4px;
  transition: all .15s;
  vertical-align: middle;
  flex-shrink: 0;
}
.speak:hover { background: #181818; color: var(--ink); }
.card[data-cat="op"] .speak:hover { color: var(--op); }
.card[data-cat="gt"] .speak:hover { color: var(--gt); }
.card[data-cat="pt"] .speak:hover { color: var(--pt); }
.card[data-cat="qg"] .speak:hover { color: var(--qg); }
.card[data-cat="qo"] .speak:hover { color: var(--qo); }
.speak svg { width: 14px; height: 14px; pointer-events: none; }
.example .speak {
  position: absolute;
  top: 8px;
  right: 8px;
}
.speak.playing { animation: pulse 1.2s ease-in-out infinite; }
.card[data-cat="op"] .speak.playing { color: var(--op); background: var(--op-bg); }
.card[data-cat="gt"] .speak.playing { color: var(--gt); background: var(--gt-bg); }
.card[data-cat="pt"] .speak.playing { color: var(--pt); background: var(--pt-bg); }
.card[data-cat="qg"] .speak.playing { color: var(--qg); background: var(--qg-bg); }
.card[data-cat="qo"] .speak.playing { color: var(--qo); background: var(--qo-bg); }
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.18); opacity: 0.7; }
}

.audio-toggle {
  display: flex;
  align-items: center;
  background: #050505;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 3px;
  gap: 2px;
}
.audio-toggle button {
  padding: 4px 10px;
  border-radius: 999px;
  color: var(--ink-faint);
  font-size: 11px;
  font-weight: 500;
  border-color: transparent;
}
.audio-toggle button:hover { color: var(--ink); }
.audio-toggle button.active {
  background: var(--yellow);
  color: var(--yellow-ink);
}

.empty {
  text-align: center;
  padding: 80px 32px;
  color: var(--ink-faint);
  font-family: var(--serif);
  font-style: italic;
  font-size: 20px;
  display: none;
}
.empty.show { display: block; }

footer {
  max-width: 1280px;
  margin: 64px auto 0;
  padding: 32px;
  border-top: 1px solid var(--line);
  text-align: center;
  font-size: 12px;
  color: var(--ink-faint);
  letter-spacing: 0.05em;
}
footer a {
  color: var(--yellow);
  text-decoration: none;
}
footer a:hover { text-decoration: underline; }

.card:hover .mini-label,
.card:hover .mini-dot,
.card:hover .def-en,
.card:hover .example .zh,
.card:hover .syn,
.card:hover .sp-vs,
.card:hover .sp-label,
.card:hover .sp-empty {
  color: rgba(19, 19, 19, 0.72);
}

.card:hover .def-zh,
.card:hover .word,
.card:hover .example .en,
.card:hover .sp-word,
.card:hover .sp-val {
  color: var(--yellow-ink);
}

.card:hover .word-mark,
.card:hover .example,
.card:hover .syn,
.card:hover .syn-panel,
.card:hover .speak {
  border-color: rgba(19, 19, 19, 0.18);
}

.card:hover .example,
.card:hover .syn-panel,
.card:hover .syn,
.card:hover .speak {
  background: rgba(19, 19, 19, 0.06);
}

.card:hover .tag {
  color: var(--yellow-ink);
  background: rgba(19, 19, 19, 0.08);
}

.card:hover .speak,
.card:hover .speak:hover {
  color: var(--yellow-ink);
}

.card:hover .syn:hover {
  background: rgba(19, 19, 19, 0.12);
  color: var(--yellow-ink);
}

@media print {
  .nav,
  .hero .meta { display: none; }
  body { background: white; }
  .card { break-inside: avoid; border: 1px solid #ddd; box-shadow: none; }
  .grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .hero { padding: 48px 20px 32px; }
  .hero h1 { font-size: 38px; }
  main { padding: 20px; }
  .nav { padding: 12px 16px; }
  .section-header h2 { font-size: 26px; }
  .grid { grid-template-columns: 1fr; }
}

@media (max-width: 920px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }
}