@font-face {
  font-family: "Ark Pixel";
  src: url("/assets/fonts/ark-pixel-12px-zh.woff2") format("woff2");
  font-display: swap;
  font-style: normal;
  font-weight: 400;
  unicode-range: U+3000-303F, U+4E00-9FFF, U+3400-4DBF, U+F900-FAFF, U+FF00-FFEF, U+2E80-2EFF;
}

:root {
  color-scheme: light;
  --paper: #faf8f3;
  --paper-warm: #f4efe5;
  --paper-soft: #fbfaf6;
  --ink: #1a1814;
  --ink-soft: #2d2924;
  --muted: #6b6358;
  --quiet: #a89e8e;
  --line: #d9d1c0;
  --line-soft: #e6decc;
  --chestnut: #8b5a3b;
  --chestnut-dim: #6f4730;
  --signal: #5a7d5a;
  --lamp: #c4b89d;
  --glow-rgb: 255, 240, 210;
  --mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --pixel: "VT323", "Ark Pixel", "IBM Plex Mono", ui-monospace, monospace;
  --serif: "Fraunces", Georgia, serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  overflow-x: hidden;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.65;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: 0.46;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='200' height='200'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.1 0 0 0 0 0.09 0 0 0 0 0.08 0 0 0 0.07 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: 0.75;
  background: repeating-linear-gradient(
    0deg,
    transparent 0,
    transparent 2px,
    rgba(26, 24, 20, 0.014) 2px,
    rgba(26, 24, 20, 0.014) 3px
  );
}

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

button,
input,
select {
  font: inherit;
}

.lamp {
  position: fixed;
  top: 0;
  left: 0;
  width: 620px;
  height: 620px;
  z-index: 2;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(var(--glow-rgb), 0.36) 0%, rgba(var(--glow-rgb), 0.12) 34%, rgba(var(--glow-rgb), 0) 62%);
  transform: translate(45vw, 20vh) translate(-50%, -50%);
  mix-blend-mode: multiply;
}

.scan-beam {
  position: fixed;
  inset: 0 0 auto;
  height: 70px;
  z-index: 2;
  pointer-events: none;
  opacity: 0.3;
  transform: translateY(-120%);
  background: linear-gradient(180deg, transparent 0%, rgba(139, 90, 59, 0.05) 50%, transparent 100%);
  animation: scanBeam 18s ease-in-out infinite;
}

@keyframes scanBeam {
  0%, 78%, 100% { transform: translateY(-120%); opacity: 0; }
  83% { opacity: 0.35; }
  92% { transform: translateY(120vh); opacity: 0.35; }
  94% { opacity: 0; }
}

.site-shell {
  position: relative;
  z-index: 5;
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 22px 0 56px;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto minmax(210px, 1fr);
  gap: 16px;
  align-items: center;
  padding: 12px 0 14px;
  border-bottom: 1px dashed var(--line);
  background: rgba(250, 248, 243, 0.92);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 236px;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-warm) 100%);
  color: var(--chestnut-dim);
  font-family: var(--pixel);
  font-size: 24px;
  line-height: 1;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    2px 2px 0 0 var(--chestnut);
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  color: var(--ink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.brand small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.06em;
}

.site-home {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 4px 9px 3px;
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--muted);
  background: var(--paper-warm);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-home:hover {
  border-color: var(--ink);
  color: var(--ink);
}

.category-nav {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.category-nav a {
  flex: 0 0 auto;
  padding: 6px 10px 5px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(250, 248, 243, 0.75);
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
}

.category-nav a.active,
.category-nav a:hover {
  border-color: var(--chestnut-dim);
  background: var(--paper);
  color: var(--chestnut-dim);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    2px 2px 0 0 var(--chestnut);
}

.dashboard-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 292px;
  gap: 28px;
  align-items: end;
  padding: 48px 0 20px;
}

.bootline,
.section-label,
.card-kicker,
.meta-label {
  color: var(--quiet);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.prompt {
  color: var(--chestnut);
  margin-right: 7px;
}

.dashboard-head h1 {
  max-width: 780px;
  margin: 8px 0 0;
  color: var(--ink);
  font-family: var(--pixel);
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.02em;
}

.dashboard-head p {
  max-width: 760px;
  margin: 16px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.85;
}

.scan-card,
.mode-panel,
.quick-route,
.stats-grid > div,
.resource-card,
.featured-card,
.picked-note,
.empty-state {
  border: 1px solid var(--line);
  border-radius: 2px;
  background: rgba(250, 248, 243, 0.82);
}

.scan-card {
  position: relative;
  padding: 18px;
  background:
    repeating-linear-gradient(135deg, transparent 0, transparent 10px, rgba(139, 90, 59, 0.035) 10px, rgba(139, 90, 59, 0.035) 11px),
    var(--paper-warm);
}

.scan-card::before,
.scan-card::after {
  content: "";
  position: absolute;
  width: 8px;
  height: 8px;
  border-color: var(--quiet);
  border-style: solid;
}

.scan-card::before {
  top: -1px;
  left: -1px;
  border-width: 1px 0 0 1px;
}

.scan-card::after {
  right: -1px;
  bottom: -1px;
  border-width: 0 1px 1px 0;
}

.scan-card span,
.scan-card small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.scan-card strong {
  display: block;
  margin: 8px 0 6px;
  color: var(--chestnut-dim);
  font-family: var(--pixel);
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
}

.controls {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) 145px 145px 160px;
  gap: 12px;
  margin: 14px 0 14px;
}

.controls label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.controls input,
.controls select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--paper-soft);
  color: var(--ink);
  outline: none;
  padding: 0 11px;
  font-size: 13px;
}

.controls input:focus,
.controls select:focus {
  border-color: var(--chestnut-dim);
  box-shadow: 2px 2px 0 0 rgba(139, 90, 59, 0.28);
}

.mode-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  margin: 14px 0 18px;
  padding: 12px;
  background: rgba(244, 239, 229, 0.72);
}

.ai-track-panel {
  display: grid;
  gap: 10px;
  margin: -4px 0 18px;
  padding: 12px;
  border: 1px dashed var(--line);
  background: rgba(250, 248, 243, 0.72);
}

.mode-tabs,
.ai-track-tabs,
.action-row,
.card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.mode-tab,
.ai-track-tab,
.btn-retro,
.card-footer a,
.copy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 30px;
  padding: 5px 11px 4px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-warm) 100%);
  color: var(--ink);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    2px 2px 0 0 var(--ink);
  cursor: pointer;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: transform 0.08s cubic-bezier(0.5, 0, 0.5, 1), box-shadow 0.08s ease, background 0.15s ease, color 0.15s ease;
}

.mode-tab:hover,
.ai-track-tab:hover,
.btn-retro:hover,
.card-footer a:hover,
.copy-btn:hover {
  background: var(--ink);
  color: var(--paper);
}

.mode-tab:active,
.ai-track-tab:active,
.btn-retro:active,
.card-footer a:active,
.copy-btn:active {
  transform: translate(2px, 2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    0 0 0 0 var(--ink);
}

.mode-tab.is-active,
.ai-track-tab.is-active,
.btn-primary {
  border-color: var(--chestnut-dim);
  color: var(--chestnut-dim);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    2px 2px 0 0 var(--chestnut);
}

.mode-tab.is-active:hover,
.ai-track-tab.is-active:hover,
.btn-primary:hover {
  background: var(--chestnut);
  color: var(--paper);
}

.ai-track-tab {
  min-height: 28px;
  padding-inline: 9px;
  border-color: var(--line);
  color: var(--muted);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    2px 2px 0 0 var(--line);
  text-transform: none;
  letter-spacing: 0.02em;
}

.ai-track-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
}

.picked-note {
  display: none;
  margin: 12px 0 18px;
  padding: 12px 14px;
  color: var(--ink-soft);
  background: var(--paper-soft);
}

.picked-note.is-visible {
  display: block;
}

.picked-note strong {
  color: var(--chestnut-dim);
}

.quick-route {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr) 300px;
  gap: 18px;
  align-items: start;
  margin: 18px 0;
  padding: 16px;
}

.route-title {
  color: var(--chestnut-dim);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.quick-route ol {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 20px;
}

.quick-route li {
  color: var(--ink-soft);
  line-height: 1.55;
}

.quick-route p {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
}

.section-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 24px 0 12px;
  color: var(--ink);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-head .marker {
  color: var(--chestnut);
  font-size: 10px;
}

.section-head .rule {
  flex: 1;
  height: 1px;
  background: repeating-linear-gradient(90deg, var(--line) 0, var(--line) 2px, transparent 2px, transparent 4px);
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.featured-card {
  display: grid;
  grid-template-columns: 116px minmax(0, 1fr);
  gap: 12px;
  min-height: 112px;
  padding: 10px;
  background: rgba(250, 248, 243, 0.9);
}

.featured-cover {
  position: relative;
  display: block;
}

.featured-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--line-soft);
  filter: saturate(0.82) contrast(1.02);
}

.featured-card h3 {
  margin: 4px 0 8px;
  color: var(--ink);
  font-size: 13px;
  line-height: 1.35;
}

.featured-card p {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.5;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 20px 0 26px;
}

.stats-grid > div {
  min-height: 104px;
  padding: 14px;
  background: var(--paper-soft);
}

.stats-grid span,
.stats-grid small {
  display: block;
  color: var(--muted);
  font-size: 11px;
}

.stats-grid strong {
  display: block;
  margin: 9px 0;
  color: var(--ink);
  font-family: var(--pixel);
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
}

.stats-grid .stat-title {
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.25;
}

.masonry {
  column-width: 322px;
  column-gap: 16px;
}

.resource-card {
  display: inline-block;
  width: 100%;
  overflow: hidden;
  margin: 0 0 16px;
  break-inside: avoid;
  background: var(--paper-soft);
  box-shadow: 2px 2px 0 0 rgba(26, 24, 20, 0.12);
}

.resource-card.is-picked {
  border-color: var(--chestnut-dim);
  box-shadow: 2px 2px 0 0 var(--chestnut);
}

.cover-link {
  position: relative;
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--paper-warm);
  border-bottom: 1px solid var(--line);
}

.cover-link img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  filter: saturate(0.82) contrast(1.02);
  transition: transform 180ms ease, filter 180ms ease;
}

.resource-card:hover .cover-link img {
  transform: scale(1.025);
  filter: saturate(0.95) contrast(1.03);
}

.cover-link .level-badge {
  position: absolute;
  right: 9px;
  bottom: 9px;
  padding: 4px 7px;
  border: 1px solid rgba(250, 248, 243, 0.7);
  border-radius: 2px;
  background: rgba(26, 24, 20, 0.82);
  color: var(--paper);
  font-size: 11px;
  font-weight: 700;
}

.source-badge {
  position: absolute;
  left: 9px;
  top: 9px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  min-height: 24px;
  padding: 3px 7px 3px 4px;
  border: 1px solid rgba(250, 248, 243, 0.72);
  border-radius: 2px;
  background: rgba(250, 248, 243, 0.9);
  color: var(--ink);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1;
  text-transform: uppercase;
  box-shadow: 2px 2px 0 0 rgba(26, 24, 20, 0.16);
}

.featured-cover .source-badge {
  left: 6px;
  top: 6px;
  min-height: 20px;
  padding: 2px 6px 2px 3px;
  font-size: 9px;
}

.source-icon {
  display: grid;
  width: 16px;
  height: 16px;
  place-items: center;
  border: 1px solid currentColor;
  border-radius: 2px;
  font-family: var(--pixel);
  font-size: 13px;
  font-weight: 400;
  line-height: 1;
}

.source-youtube {
  color: #8a2f2a;
}

.source-bilibili {
  color: #356f7e;
}

.card-body {
  padding: 14px;
}

.card-kicker {
  color: var(--chestnut-dim);
}

.card-body h2 {
  margin: 8px 0 8px;
  color: var(--ink);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.34;
  letter-spacing: 0;
}

.meta,
.reason,
.watch {
  margin: 0;
  line-height: 1.62;
}

.meta {
  color: var(--muted);
  font-size: 12px;
}

.source-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin: 12px 0;
  color: var(--muted);
  font-size: 11px;
}

.reason {
  color: var(--ink-soft);
  font-size: 13px;
}

.watch {
  margin-top: 10px;
  padding: 9px 10px;
  border-left: 2px solid var(--chestnut);
  background: var(--paper-warm);
  color: var(--chestnut-dim);
  font-size: 12px;
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 13px;
}

.tag-row span {
  padding: 4px 7px 3px;
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  background: var(--paper);
  color: var(--muted);
  font-size: 11px;
}

.card-footer {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line);
  color: var(--muted);
  font-size: 11px;
}

.copy-btn {
  border-color: var(--line);
  color: var(--muted);
  background: var(--paper);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    2px 2px 0 0 var(--line);
}

.empty-state {
  display: block;
  padding: 28px;
  border-style: dashed;
  color: var(--muted);
  background: rgba(250, 248, 243, 0.74);
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  margin-top: 36px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  color: var(--quiet);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.backtop {
  position: fixed;
  right: 20px;
  bottom: 18px;
  z-index: 30;
  min-width: 42px;
  min-height: 34px;
  border: 1px solid var(--ink);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--paper) 0%, var(--paper-warm) 100%);
  color: var(--chestnut-dim);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.75),
    2px 2px 0 0 var(--chestnut);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.backtop:hover {
  background: var(--ink);
  color: var(--paper);
}

.backtop:active {
  transform: translate(2px, 2px);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.15),
    0 0 0 0 var(--chestnut);
}

@media (max-width: 1020px) {
  .topbar,
  .dashboard-head,
  .controls,
  .mode-panel,
  .quick-route,
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .category-nav {
    justify-content: flex-start;
  }

  .dashboard-head {
    padding-top: 34px;
  }

  .featured-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .site-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 12px;
  }

  .topbar {
    position: relative;
  }

  .brand {
    min-width: 0;
  }

  .dashboard-head h1 {
    font-size: 36px;
  }

  .dashboard-head p {
    font-size: 13px;
  }

  .featured-card {
    grid-template-columns: 92px minmax(0, 1fr);
  }

  .masonry {
    column-width: auto;
    columns: 1;
  }

  .card-footer {
    grid-template-columns: 1fr;
  }

  .footer {
    flex-direction: column;
  }
}

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

  .lamp,
  .scan-beam {
    display: none;
  }
}