:root {
  color-scheme: dark;
  --bg: #111310;
  --bg-veil: rgba(17, 19, 16, 0.96);
  --surface: #191c18;
  --surface-raised: #20241f;
  --surface-hover: #272c26;
  --surface-sunken: #161915;
  --surface-deep: #0b0d0b;
  --surface-skeleton: #242823;
  --border: #343a32;
  --border-strong: #485144;
  --text: #f0f2ed;
  --text-soft: #d5dad2;
  --muted: #a5ada1;
  --faint: #7d857a;
  --accent: #91c49a;
  --accent-strong: #b1d8b6;
  --accent-ink: #111811;
  --accent-surface: #202a20;
  --gold: #d0ad69;
  --gold-ink: #17140e;
  --danger: #ef8b82;
  --focus-ring: rgba(145, 196, 154, 0.16);
  --shimmer: rgba(240, 242, 237, 0.05);
  --scrim: rgba(0, 0, 0, 0.42);
  --shadow-lift: 0 8px 22px rgba(0, 0, 0, 0.35);
  --radius: 6px;
  --radius-sm: 4px;
  --duration-fast: 150ms;
  --duration-normal: 240ms;
  --duration-slow: 300ms;
  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --font: "SF Pro Text", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }
html {
  min-width: 320px;
  scroll-behavior: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  letter-spacing: 0;
}
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 8px;
  border: 2px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--border-strong); }
button, input { font: inherit; letter-spacing: 0; }
button { color: inherit; }
a { color: inherit; text-decoration: none; }
svg { width: 18px; height: 18px; stroke-width: 2; }
.hidden { display: none !important; }
#app { min-height: 100vh; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  background: var(--bg-veil);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}
.topbar-inner {
  width: min(1280px, 100%);
  min-height: 62px;
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  border: 0;
  padding: 0;
  background: transparent;
  cursor: pointer;
  flex: 0 0 auto;
}
.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--gold);
  color: var(--gold-ink);
  font-size: 12px;
  font-weight: 800;
}
.brand-text { font-size: 17px; font-weight: 700; }
.search-form {
  width: min(420px, 56vw);
  display: flex;
  gap: 8px;
}
.search-field {
  flex: 1;
  min-width: 0;
  height: 40px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 0 11px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--muted);
  transition: border-color var(--duration-fast) var(--ease-out), box-shadow var(--duration-fast) var(--ease-out);
}
.search-field:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--focus-ring);
}
.search-field input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: 0;
  color: var(--text);
  background: transparent;
}
.search-field input::placeholder { color: var(--faint); }
.btn-primary, .btn-secondary, .icon-command, .back-link {
  min-height: 38px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; }
.btn-secondary, .icon-command, .back-link { background: var(--surface); }
.btn-primary:hover { background: var(--accent-strong); border-color: var(--accent-strong); }
.btn-secondary:hover, .icon-command:hover, .back-link:hover { background: var(--surface-hover); border-color: var(--border-strong); }
.btn-primary:active, .btn-secondary:active, .icon-command:active, .back-link:active { transform: translateY(1px); }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
button:disabled { opacity: 0.38; cursor: default; transform: none; }

.category-bar {
  width: min(1280px, 100%);
  min-height: 44px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: stretch;
  gap: 6px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scroll-snap-type: x proximity;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) transparent;
}
.category-tab {
  width: max-content;
  min-width: max-content;
  flex: 0 0 auto;
  height: 44px;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 0 10px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-size: 13px;
  white-space: nowrap;
  word-break: keep-all;
  writing-mode: horizontal-tb;
  scroll-snap-align: start;
  transition: color var(--duration-fast) var(--ease-out), border-color var(--duration-fast) var(--ease-out);
}
.category-tab:hover { color: var(--text); }
.category-tab:focus-visible { outline-offset: -2px; }
.category-tab.active { color: var(--accent-strong); border-bottom-color: var(--accent); }
.category-skeleton {
  align-self: center;
  width: 56px;
  height: 13px;
  flex: 0 0 auto;
  border-radius: var(--radius-sm);
}
.category-skeleton:nth-child(odd) { width: 38px; }

.main {
  width: min(1280px, 100%);
  margin: 0 auto;
  padding: 22px 20px calc(48px + env(safe-area-inset-bottom, 0px));
  padding-left: max(20px, env(safe-area-inset-left, 0px));
  padding-right: max(20px, env(safe-area-inset-right, 0px));
}
.view { animation: view-enter var(--duration-normal) var(--ease-out-expo) both; }
@keyframes view-enter {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}
.list-toolbar {
  min-height: 38px;
  margin-bottom: 18px;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.view-title {
  position: relative;
  margin: 0;
  padding-left: 13px;
  font-size: 21px;
  font-weight: 760;
  line-height: 1.3;
  letter-spacing: 0.01em;
}
.view-title::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  width: 4px;
  height: 1.05em;
  transform: translateY(-50%);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent-strong), var(--accent) 72%);
}
.view-status { color: var(--muted); font-size: 12px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(205px, 1fr));
  gap: 12px;
  min-height: 280px;
}
.post-card {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
  background: var(--surface);
  text-align: left;
  cursor: pointer;
  transition: border-color var(--duration-fast) var(--ease-out),
    transform 200ms var(--ease-out),
    box-shadow 200ms var(--ease-out);
}
.post-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lift), 0 0 0 1px rgba(145, 196, 154, 0.22);
}
.post-card:hover .post-title { color: var(--accent-strong); }
.post-card:active { transform: translateY(0); }
.post-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@keyframes card-enter {
  from { opacity: 0; transform: translateY(8px); }
}
.post-cover { position: relative; width: 100%; aspect-ratio: 4 / 3; overflow: hidden; background: var(--surface-deep); }
.post-cover img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out), opacity var(--duration-slow) var(--ease-out);
}
.post-cover img.is-loading { opacity: 0; }
.post-card:hover .post-cover img { transform: scale(1.04); }
.image-fallback { position: absolute; inset: 0; display: grid; place-items: center; color: var(--faint); background: var(--surface-sunken); }
.image-fallback svg { width: 28px; height: 28px; }
.post-body { padding: 10px 11px 11px; }
.post-title {
  min-height: 2.8em;
  margin: 0;
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  font-size: 14px;
  line-height: 1.4;
  font-weight: 650;
  transition: color var(--duration-fast) var(--ease-out);
}
.post-meta {
  min-height: 20px;
  margin-top: 9px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  color: var(--faint);
  font-size: 11px;
}
.post-meta span, .post-meta time { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.post-chip {
  flex: 0 1 auto;
  padding: 2px 7px;
  border: 1px solid rgba(145, 196, 154, 0.28);
  border-radius: 999px;
  background: var(--accent-surface);
  color: var(--accent-strong);
  font-size: 10px;
  font-weight: 600;
  line-height: 1.5;
}
.post-meta-info {
  flex: 1 1 auto;
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}
.post-meta-info time { flex: 0 0 auto; font-variant-numeric: tabular-nums; }
.post-author { color: var(--muted); }
.pager { margin-top: 24px; display: flex; align-items: center; justify-content: center; gap: 12px; }
.page-label { min-width: 72px; text-align: center; color: var(--muted); font-size: 12px; }

.skeleton-block, .skeleton-card span, .detail-skeleton span {
  position: relative;
  overflow: hidden;
  background: var(--surface-skeleton);
}
.skeleton-card { pointer-events: none; }
.skeleton-card .post-body span { display: block; height: 12px; margin: 4px 0 10px; border-radius: 3px; }
.skeleton-card .post-body span:last-child { width: 58%; margin-bottom: 2px; }
@keyframes shimmer { to { transform: translateX(100%); } }

@media (prefers-reduced-motion: no-preference) {
  .post-card {
    animation: card-enter var(--duration-normal) var(--ease-out-expo) backwards;
    animation-delay: min(calc(var(--stagger, 0) * 28ms), 224ms);
  }
  .skeleton-block::after, .skeleton-card span::after, .detail-skeleton span::after,
  .post-cover:has(img.is-loading)::after,
  .detail-image:has(img.is-loading)::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, transparent 30%, var(--shimmer) 50%, transparent 70%);
    transform: translateX(-100%);
    animation: shimmer 1.4s ease-in-out infinite;
  }
}

.feedback {
  grid-column: 1 / -1;
  min-height: 220px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--muted);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  animation: view-enter var(--duration-normal) var(--ease-out-expo) both;
}
.feedback p { margin: 0; }
.feedback svg { width: 26px; height: 26px; }
.feedback .btn-secondary { min-height: 44px; min-width: 108px; }
.empty-state::before { content: '空'; display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--border); border-radius: 50%; font-size: 15px; color: var(--faint); }
.error-state { color: var(--danger); }
.back-link { margin-bottom: 16px; }
.article { min-height: 420px; }
.article-header { margin-bottom: 18px; }
.article-header h1 { max-width: 980px; margin: 0 0 10px; font-size: 24px; line-height: 1.38; overflow-wrap: anywhere; }
.article-meta { display: flex; flex-wrap: wrap; gap: 7px 14px; color: var(--muted); font-size: 12px; }
.article-meta span:last-child { color: var(--gold); }
.detail-skeleton { display: grid; gap: 14px; }
.detail-skeleton span { display: block; height: 28px; border-radius: var(--radius-sm); }
.detail-skeleton span:first-child { width: 68%; }
.detail-skeleton span:nth-child(2) { width: 34%; height: 16px; }
.detail-skeleton span:last-child { width: 100%; height: min(62vw, 620px); }

.player-section { width: 100%; margin-bottom: 24px; }
.player-heading { min-height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--muted); font-size: 12px; }
.player-label { max-width: 80%; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.player-layout { display: grid; grid-template-columns: minmax(0, 1fr); align-items: stretch; }
.player-layout.has-options { grid-template-columns: minmax(0, 1fr) minmax(280px, 320px); gap: 12px; }
.player-frame { position: relative; width: 100%; aspect-ratio: 16 / 9; max-height: 72vh; background: #000; overflow: hidden; border-radius: var(--radius); }
.player-frame video { width: 100%; height: 100%; display: block; object-fit: contain; background: #000; }
.artplayer-mount { width: 100%; height: 100%; }
.player-feedback {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 9px;
  pointer-events: none;
  color: #f5f5f2;
  background: var(--scrim);
  font-size: 13px;
}
.player-feedback.active { display: flex; }
.player-feedback svg { animation: spin 900ms linear infinite; }
.player-feedback.is-error { color: var(--danger); pointer-events: auto; }
.player-feedback.is-error svg { animation: none; }
.player-retry { display: none; min-height: 44px; min-width: 108px; margin-top: 2px; color: var(--text); }
.player-feedback.is-error .player-retry { display: inline-flex; }
.media-interaction-hint {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 4;
  max-width: calc(100% - 32px);
  padding: 8px 12px;
  transform: translate(-50%, -50%) scale(0.96);
  border-radius: var(--radius);
  background: rgba(0, 0, 0, 0.72);
  color: #fff;
  font-size: 13px;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-fast) var(--ease-out), transform var(--duration-fast) var(--ease-out);
}
.media-interaction-hint.is-visible { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.player-frame:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }
.video-list-panel {
  position: relative;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}
.video-options {
  position: absolute;
  inset: 0;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 7px;
  overflow-y: auto;
  overscroll-behavior-y: contain;
  scrollbar-width: thin;
  scrollbar-color: var(--border-strong) var(--surface);
}
.video-option {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  flex: 0 0 auto;
  padding: 7px 9px;
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  cursor: pointer;
  text-align: left;
  transition: border-color var(--duration-fast) var(--ease-out), background-color var(--duration-fast) var(--ease-out);
}
.video-option:hover { border-color: var(--border-strong); background: var(--surface-hover); }
.video-option:active { background: var(--surface-raised); }
.video-option.active { border-color: var(--accent); background: var(--accent-surface); }
.video-number {
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border-radius: var(--radius-sm);
  background: var(--surface-raised);
  color: var(--muted);
  font-size: 11px;
  transition: background-color var(--duration-fast) var(--ease-out), color var(--duration-fast) var(--ease-out);
}
.video-option.active .video-number { background: var(--accent); color: var(--accent-ink); }
.video-option-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12px; }
.article-text { width: min(920px, 100%); margin: 24px 0; }
.article-text p { margin: 0 0 12px; color: var(--text-soft); font-size: 14px; line-height: 1.75; overflow-wrap: anywhere; }
.image-section { margin-top: 24px; }
.image-section h2 { margin: 0 0 10px; font-size: 15px; }
.image-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; align-items: start; }
.detail-image {
  position: relative;
  min-height: 160px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface-deep);
  transition: border-color var(--duration-fast) var(--ease-out);
}
.detail-image:hover { border-color: var(--border-strong); }
.detail-image:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.detail-image img { width: 100%; height: auto; display: block; transition: opacity var(--duration-slow) var(--ease-out); }
.detail-image img.is-loading { opacity: 0; }
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(22px + env(safe-area-inset-bottom, 0px));
  z-index: 100;
  max-width: calc(100vw - 32px);
  padding: 9px 13px;
  transform: translateX(-50%);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  background: var(--surface-hover);
  color: var(--text);
  font-size: 12px;
  animation: toast-in 220ms var(--ease-out) both;
}
.toast.is-leaving { animation: toast-out 200ms var(--ease-out) both; }
@keyframes toast-in {
  from { opacity: 0; transform: translate(-50%, 10px); }
  to { opacity: 1; transform: translate(-50%, 0); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translate(-50%, 0); }
  to { opacity: 0; transform: translate(-50%, 8px); }
}

@media (max-width: 960px) {
  .player-layout.has-options { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .video-list-panel { height: 176px; }
  .video-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); align-content: start; }
}

@media (max-width: 760px) {
  .topbar-inner { min-height: auto; padding: 9px 12px; gap: 10px; }
  .brand-text { display: none; }
  .search-form { width: auto; flex: 1; }
  .category-bar { padding: 0 12px; gap: 2px; }
  .category-tab { padding: 0 9px; }
  .category-skeleton { margin: 0 6px; }
  .main {
    padding: 16px 12px calc(36px + env(safe-area-inset-bottom, 0px));
    padding-left: max(12px, env(safe-area-inset-left, 0px));
    padding-right: max(12px, env(safe-area-inset-right, 0px));
  }
  .post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .post-body { padding: 8px; }
  .post-title { font-size: 13px; }
  .post-meta-info time { display: none; }
  .article-header h1 { font-size: 20px; }
  .player-frame { width: calc(100% + 24px); margin-left: -12px; border-radius: 0; }
  .video-list-panel { height: 160px; }
  .video-options { grid-template-columns: 1fr; }
  .image-grid { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .btn-primary { width: 46px; padding: 8px 6px; font-size: 12px; }
  .brand-mark { width: 32px; height: 32px; }
  .search-field { height: 40px; }
}

@media (pointer: coarse) {
  .btn-primary, .btn-secondary, .icon-command, .back-link { min-height: 44px; }
  .search-field { height: 44px; }
  .category-bar { min-height: 46px; }
  .category-tab { height: 46px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
  .skeleton-block::after, .skeleton-card span::after, .detail-skeleton span::after { animation: none; }
  .player-feedback svg { animation: none; }
}