:root {
  color-scheme: light;
  --bg: #f6f9f7;
  --surface: #ffffff;
  --surface-soft: #edf4f0;
  --surface-muted: #e6efea;
  --text: #14231c;
  --muted: #53665c;
  --subtle: #61756a;
  --line: #d5e1da;
  --line-strong: #b8cbc0;
  --accent: #087748;
  --accent-strong: #055f39;
  --accent-soft: #e3f2e9;
  --accent-soft-text: #075f3a;
  --focus: rgba(8, 119, 72, 0.2);
  --shadow: 0 18px 42px rgba(24, 63, 43, 0.09);
  --shadow-soft: 0 10px 28px rgba(24, 63, 43, 0.06);
  --radius-card: 14px;
  --radius-control: 10px;
  --content-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100dvh;
  color: var(--text);
  font-family:
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    sans-serif;
  background: var(--bg);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

button,
input,
textarea,
a {
  font: inherit;
  -webkit-tap-highlight-color: transparent;
}

button,
input,
textarea {
  color: inherit;
}

button {
  appearance: none;
}

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

img {
  max-width: 100%;
}

[hidden] {
  display: none !important;
}

h1,
h2,
p {
  margin: 0;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 10;
  min-height: 44px;
  padding: 11px 14px;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  background: var(--accent-strong);
  border-radius: var(--radius-control);
  transform: translateY(-160%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.page-shell {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 16px calc(32px + env(safe-area-inset-bottom));
}

.site-header {
  padding-top: max(24px, env(safe-area-inset-top));
  border-bottom: 1px solid var(--line);
}

.brand-row {
  display: grid;
  gap: 18px;
  padding: 10px 0 26px;
}

.brand-main {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  min-width: 0;
}

.brand-avatar {
  display: block;
  width: 56px;
  height: 56px;
  object-fit: cover;
  object-position: center;
  border: 2px solid var(--surface);
  border-radius: 16px;
  box-shadow: 0 10px 24px rgba(24, 63, 43, 0.12);
  margin-top: 2px;
}

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

h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 850;
  line-height: 1.08;
  letter-spacing: -0.045em;
  text-wrap: balance;
}

.subtitle {
  max-width: 36rem;
  margin-top: 7px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
  text-wrap: balance;
}

.search-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 14px;
  align-items: center;
  padding: 20px 0;
}

.search-box {
  position: relative;
  display: block;
  min-width: 0;
}

.search-box input {
  width: 100%;
  min-width: 0;
  min-height: 52px;
  padding: 0 16px;
  color: var(--text);
  font-size: 15px;
  line-height: 1;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  outline: 0;
  transition:
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.search-box input::placeholder {
  color: var(--subtle);
  opacity: 1;
}

.search-box input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--focus);
}

.search-box input:disabled {
  cursor: wait;
  background: var(--surface-soft);
}

.category-tabs {
  display: flex;
  min-height: 44px;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.category-tab {
  min-width: 64px;
  min-height: 44px;
  flex: 0 0 auto;
  padding: 0 15px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
  line-height: 42px;
  white-space: nowrap;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-control);
  cursor: pointer;
  transition:
    color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.category-tab:hover:not(:disabled) {
  color: var(--accent-strong);
  border-color: var(--accent);
}

.category-tab:active:not(:disabled) {
  transform: translateY(1px) scale(0.98);
}

.category-tab.is-active {
  color: #ffffff;
  background: var(--accent);
  border-color: var(--accent);
}

.category-tab:disabled {
  cursor: wait;
  opacity: 0.58;
}

.results-head {
  display: flex;
  min-height: 54px;
  align-items: center;
  padding: 16px 2px 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.resource-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.resource-card {
  position: relative;
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease;
}

.resource-card:focus-within,
.resource-card:hover {
  border-color: var(--line-strong);
  box-shadow: var(--shadow-soft);
}

.new-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  z-index: 2;
  display: inline-flex;
  min-width: 48px;
  min-height: 30px;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  color: #ffffff;
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1;
  background: #e35b3f;
  border: 2px solid var(--surface);
  border-radius: 999px;
  box-shadow: 0 6px 16px rgba(179, 58, 36, 0.26);
  transform: rotate(4deg);
}

.cover-link {
  display: block;
  overflow: hidden;
  height: 116px;
  background: var(--surface-soft);
}

a.cover-link:focus-visible {
  outline-offset: -4px;
}

.cover-image {
  display: block;
  width: 100%;
  height: 100%;
  padding: 8px;
  object-fit: contain;
  object-position: center;
  transition: transform 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

.cover-image[src$=".svg"] {
  padding: 14px;
  object-fit: contain;
  background: var(--accent-soft);
}

.resource-card:hover .cover-image {
  transform: scale(1.015);
}

.card-body {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
}

.card-meta {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.category-label {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0 9px;
  overflow: hidden;
  color: var(--accent-soft-text);
  font-size: 12px;
  font-weight: 780;
  line-height: 28px;
  text-overflow: ellipsis;
  white-space: nowrap;
  background: var(--accent-soft);
  border-radius: 7px;
}

.card-meta time {
  color: var(--subtle);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  line-height: 1.4;
  white-space: nowrap;
}

.card-body h2 {
  color: var(--text);
  font-size: clamp(1.1rem, 2.4vw, 1.3rem);
  font-weight: 820;
  line-height: 1.35;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.description {
  display: -webkit-box;
  overflow: hidden;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
  text-wrap: pretty;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tag {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  padding: 0 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 650;
  line-height: 28px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.action-list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  align-items: center;
  margin-top: auto;
  padding-top: 4px;
}

.action-button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 720;
  line-height: 1;
  white-space: nowrap;
}

.action-button {
  transition:
    color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.action-button.is-primary,
.action-article {
  padding: 0 14px;
  color: #ffffff;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-control);
}

.action-button.is-primary:hover,
.action-article:hover {
  background: var(--accent-strong);
  border-color: var(--accent-strong);
}

.action-button.is-secondary,
.action-baidu,
.action-quark {
  padding: 0 12px;
  color: var(--accent-strong);
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-control);
}

.action-button.is-secondary:hover,
.action-baidu:hover,
.action-quark:hover {
  color: var(--accent-strong);
  background: var(--accent-soft);
  border-color: var(--accent);
}

.action-button:active {
  transform: translateY(1px) scale(0.98);
}

.state-panel {
  margin-top: 4px;
  padding: 52px 20px;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
}

.state-panel h2 {
  font-size: 21px;
  line-height: 1.35;
}

.state-panel p {
  max-width: 34rem;
  margin: 8px auto 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
}

.retry-button {
  min-height: 44px;
  margin-top: 20px;
  padding: 0 16px;
  color: #ffffff;
  font-size: 14px;
  font-weight: 750;
  background: var(--accent);
  border: 1px solid var(--accent);
  border-radius: var(--radius-control);
  cursor: pointer;
  transition:
    background-color 160ms ease,
    transform 160ms ease;
}

.retry-button:hover {
  background: var(--accent-strong);
}

.retry-button:active {
  transform: translateY(1px) scale(0.98);
}

.skeleton-card {
  min-height: 332px;
}

.skeleton-media,
.skeleton-line {
  position: relative;
  overflow: hidden;
  background: var(--surface-muted);
}

.skeleton-media {
  height: 116px;
}

.skeleton-body {
  display: flex;
  flex-direction: column;
  gap: 13px;
  padding: 18px;
}

.skeleton-line {
  display: block;
  width: 100%;
  height: 14px;
  border-radius: 5px;
}

.skeleton-line-short {
  width: 24%;
  height: 26px;
}

.skeleton-line-title {
  width: 64%;
  height: 22px;
}

.skeleton-line-actions {
  width: 54%;
  height: 44px;
  margin-top: 8px;
  border-radius: var(--radius-control);
}

.skeleton-media::after,
.skeleton-line::after {
  position: absolute;
  inset: 0;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.58), transparent);
  transform: translateX(-100%);
  animation: skeleton-shimmer 1.4s ease-in-out infinite;
}

@keyframes skeleton-shimmer {
  to {
    transform: translateX(100%);
  }
}

.site-footer {
  padding: 36px 0 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
  line-height: 1.6;
  text-align: center;
}

.noscript {
  margin: 16px;
  padding: 14px;
  color: #794500;
  font-size: 14px;
  background: #fff6df;
  border: 1px solid #e4c47f;
  border-radius: var(--radius-control);
}

@media (min-width: 760px) {
  .page-shell {
    padding-right: 28px;
    padding-left: 28px;
  }

  .site-header {
    padding-top: max(32px, env(safe-area-inset-top));
  }

  .brand-row {
    grid-template-columns: minmax(0, 1fr);
  }

  .brand-main {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 17px;
  }

  .brand-avatar {
    width: 64px;
    height: 64px;
    border-radius: 18px;
  }

  .resource-card {
    display: grid;
    min-height: 212px;
    grid-template-columns: minmax(156px, 0.48fr) minmax(0, 1fr);
  }

  .cover-link {
    height: 100%;
    min-height: 210px;
    aspect-ratio: auto;
  }

  .resource-card.is-featured {
    min-height: 230px;
    grid-template-columns: minmax(300px, 0.5fr) minmax(0, 1fr);
  }

  .resource-card.is-featured .cover-link {
    min-height: 228px;
  }

  .resource-card.is-featured .card-body {
    gap: 10px;
    padding: 22px;
  }

  .resource-card.is-featured .card-body h2 {
    font-size: 27px;
    line-height: 1.25;
  }

  .resource-card.is-featured .description {
    font-size: 15px;
  }

  .skeleton-card {
    min-height: 212px;
  }

  .skeleton-card.is-featured {
    min-height: 230px;
  }

  .skeleton-media {
    height: 100%;
    min-height: 210px;
    aspect-ratio: auto;
  }
}

@media (min-width: 960px) {
  .resource-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .resource-card.is-featured {
    grid-column: 1 / -1;
  }

  .card-body {
    padding: 18px;
  }

  .resource-card:not(.is-featured) .action-list {
    gap: 4px 7px;
  }

  .resource-card:not(.is-featured) .action-button {
    font-size: 12px;
  }

  .resource-card:not(.is-featured) .action-button.is-primary {
    padding: 0 12px;
  }
}

@media (max-width: 759px) {
  .search-panel {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .category-tabs {
    width: 100%;
  }

  .resource-card,
  .resource-card.is-featured {
    display: block;
    min-height: 0;
  }

  .resource-card.is-featured .card-body {
    gap: 8px;
    padding: 16px;
  }

  .resource-card.is-featured .card-body h2 {
    font-size: 21px;
  }

  .skeleton-card,
  .skeleton-card.is-featured {
    min-height: 332px;
  }

  .resource-card.is-featured .cover-link,
  .skeleton-card.is-featured .skeleton-media {
    height: 132px;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #101713;
    --surface: #17211b;
    --surface-soft: #1c2a22;
    --surface-muted: #223229;
    --text: #eef6f1;
    --muted: #b4c3ba;
    --subtle: #a5b6ac;
    --line: #314239;
    --line-strong: #4a6154;
    --accent: #42b77a;
    --accent-strong: #63c98f;
    --accent-soft: #1d3c2c;
    --accent-soft-text: #9ee0ba;
    --focus: rgba(99, 201, 143, 0.3);
    --shadow: 0 18px 42px rgba(0, 0, 0, 0.24);
    --shadow-soft: 0 10px 28px rgba(0, 0, 0, 0.18);
  }

  .brand-avatar {
    border-color: #25352c;
  }

  .category-tab.is-active,
  .action-button.is-primary,
  .action-article,
  .retry-button {
    color: #0d1a13;
  }

  .skeleton-media::after,
  .skeleton-line::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  }

  .noscript {
    color: #f2d196;
    background: #352815;
    border-color: #6e5730;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .resource-card:hover {
    transform: translateY(-2px);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}