/* ============ Material Design 3 tokens (seed #415F91) ============ */
:root {
  color-scheme: light;
  --primary: #415f91;
  --on-primary: #ffffff;
  --primary-container: #d6e3ff;
  --on-primary-container: #001b3e;
  --secondary: #565f71;
  --secondary-container: #dae2f9;
  --on-secondary-container: #131c2b;
  --tertiary-container: #fad8fd;
  --on-tertiary-container: #28132e;
  --success-container: #c8f0d0;
  --on-success-container: #00210d;
  --error: #ba1a1a;
  --surface: #f9f9ff;
  --on-surface: #191c20;
  --on-surface-variant: #44474e;
  --outline: #74777f;
  --outline-variant: #c4c6d0;
  --surface-lowest: #ffffff;
  --surface-low: #f3f3fa;
  --surface-container: #ededf4;
  --surface-high: #e7e8ee;
  --surface-highest: #e2e2e9;
  --inverse-surface: #2e3036;
  --inverse-on-surface: #f0f0f7;
  --scrim: rgba(0, 0, 0, .32);

  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 28px;
  --ease: cubic-bezier(.2, 0, 0, 1);
  --font: "Roboto", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "HarmonyOS Sans SC", system-ui, -apple-system, sans-serif;
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, "SFMono-Regular", monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --primary: #aac7ff;
    --on-primary: #0a305f;
    --primary-container: #284777;
    --on-primary-container: #d6e3ff;
    --secondary: #bec6dc;
    --secondary-container: #3e4759;
    --on-secondary-container: #dae2f9;
    --tertiary-container: #573e5c;
    --on-tertiary-container: #fad8fd;
    --success-container: #0f5227;
    --on-success-container: #c8f0d0;
    --error: #ffb4ab;
    --surface: #111318;
    --on-surface: #e2e2e9;
    --on-surface-variant: #c4c6d0;
    --outline: #8e9099;
    --outline-variant: #44474e;
    --surface-lowest: #0c0e13;
    --surface-low: #191c20;
    --surface-container: #1d2024;
    --surface-high: #282a2f;
    --surface-highest: #33353a;
    --inverse-surface: #e2e2e9;
    --inverse-on-surface: #2e3036;
    --scrim: rgba(0, 0, 0, .55);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --primary: #aac7ff;
  --on-primary: #0a305f;
  --primary-container: #284777;
  --on-primary-container: #d6e3ff;
  --secondary: #bec6dc;
  --secondary-container: #3e4759;
  --on-secondary-container: #dae2f9;
  --tertiary-container: #573e5c;
  --on-tertiary-container: #fad8fd;
  --success-container: #0f5227;
  --on-success-container: #c8f0d0;
  --error: #ffb4ab;
  --surface: #111318;
  --on-surface: #e2e2e9;
  --on-surface-variant: #c4c6d0;
  --outline: #8e9099;
  --outline-variant: #44474e;
  --surface-lowest: #0c0e13;
  --surface-low: #191c20;
  --surface-container: #1d2024;
  --surface-high: #282a2f;
  --surface-highest: #33353a;
  --inverse-surface: #e2e2e9;
  --inverse-on-surface: #2e3036;
  --scrim: rgba(0, 0, 0, .55);
}

/* ============ Base ============ */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--surface);
  color: var(--on-surface);
  font-family: var(--font);
  font-size: 14px;
  line-height: 20px;
  letter-spacing: .25px;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
button, input, select { font: inherit; color: inherit; letter-spacing: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; flex: 1; }
@media (max-width: 600px) { .container { padding: 0 16px; } }

/* ============ Top app bar ============ */
.top-app-bar {
  position: sticky; top: 0; z-index: 10;
  background: var(--surface);
  transition: background-color .2s var(--ease);
}
.top-app-bar.is-scrolled { background: var(--surface-container); }
.top-app-bar__inner {
  max-width: 1200px; margin: 0 auto; height: 64px;
  padding: 0 12px 0 24px;
  display: flex; align-items: center; justify-content: space-between;
}
@media (max-width: 600px) { .top-app-bar__inner { padding: 0 4px 0 16px; } }
.brand { display: flex; align-items: center; gap: 12px; color: var(--on-surface); }
.brand:hover { text-decoration: none; }
.brand__logo {
  width: 36px; height: 36px; border-radius: var(--radius-md);
  display: grid; place-items: center;
  background: var(--primary); color: var(--on-primary);
}
.brand__logo svg { width: 20px; height: 20px; stroke-width: 2.4; }
.brand__title { font-size: 22px; line-height: 28px; font-weight: 400; }

.icon-btn {
  position: relative; width: 48px; height: 48px; border: 0; border-radius: 50%;
  background: transparent; color: var(--on-surface-variant);
  display: inline-grid; place-items: center; cursor: pointer; overflow: hidden;
}
.icon-btn::before, .btn::before, .chip::before, .card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit;
  background: currentColor; opacity: 0; transition: opacity .15s var(--ease);
  pointer-events: none;
}
.icon-btn:hover::before, .btn:hover::before, .chip:hover::before { opacity: .08; }
.icon-btn:active::before, .btn:active::before, .chip:active::before { opacity: .12; }
.icon-btn svg { width: 22px; height: 22px; }
.icon-btn--sm { width: 40px; height: 40px; }
.icon-btn--sm svg { width: 20px; height: 20px; }

.i-moon { display: none; }
:root[data-theme="dark"] .i-sun { display: none; }
:root[data-theme="dark"] .i-moon { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .i-sun { display: none; }
  :root:not([data-theme="light"]) .i-moon { display: block; }
}

/* ============ Hero ============ */
.hero { padding: 40px 0 24px; text-align: center; }
.display { margin: 0; font-size: 45px; line-height: 52px; font-weight: 400; letter-spacing: 0; }
.hero__sub { margin: 12px 0 32px; font-size: 16px; line-height: 24px; color: var(--on-surface-variant); }
@media (max-width: 600px) {
  .hero { padding: 24px 0 16px; }
  .display { font-size: 32px; line-height: 40px; }
  .hero__sub { margin-bottom: 24px; }
}

.search-bar {
  max-width: 720px; height: 56px; margin: 0 auto;
  display: flex; align-items: center; gap: 16px; padding: 0 16px;
  background: var(--surface-high); border-radius: var(--radius-xl);
  color: var(--on-surface-variant); cursor: text;
  transition: box-shadow .2s var(--ease), background-color .2s var(--ease);
}
.search-bar:focus-within { background: var(--surface-highest); box-shadow: 0 0 0 2px var(--primary); }
.search-bar input {
  flex: 1; min-width: 0; height: 100%; border: 0; outline: 0; background: transparent;
  font-size: 16px; color: var(--on-surface);
}
.search-bar input::placeholder { color: var(--on-surface-variant); }
.search-bar input::-webkit-search-cancel-button { cursor: pointer; }
.search-bar__kbd {
  font-family: var(--mono); font-size: 12px; line-height: 1;
  padding: 4px 8px; border-radius: var(--radius-xs);
  border: 1px solid var(--outline-variant); color: var(--on-surface-variant);
}
@media (hover: none) { .search-bar__kbd { display: none; } }

.notice {
  max-width: 720px; margin: 16px auto 0; padding: 12px 16px;
  display: flex; align-items: flex-start; gap: 12px; text-align: left;
  background: var(--secondary-container); color: var(--on-secondary-container);
  border-radius: var(--radius-md);
}
.notice svg { width: 20px; height: 20px; margin-top: 0; }

/* ============ Toolbar / chips ============ */
.toolbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  flex-wrap: wrap; padding: 16px 0;
}
.chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  position: relative; height: 32px; padding: 0 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--outline-variant); background: transparent;
  color: var(--on-surface-variant); font-weight: 500; letter-spacing: .1px;
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer; overflow: hidden;
  transition: background-color .15s var(--ease);
}
.chip svg { width: 18px; height: 18px; display: none; }
.chip[aria-selected="true"] {
  border-color: transparent; background: var(--secondary-container);
  color: var(--on-secondary-container); padding-left: 8px;
}
.chip[aria-selected="true"] svg { display: block; }
.chip__count { opacity: .7; font-weight: 400; }

.toolbar__right { display: flex; align-items: center; gap: 12px; }
.count { color: var(--on-surface-variant); }
.select { position: relative; display: inline-flex; align-items: center; }
.select select {
  appearance: none; height: 32px; padding: 0 36px 0 12px;
  border: 1px solid var(--outline-variant); border-radius: var(--radius-sm);
  background: transparent; color: var(--on-surface-variant); font-weight: 500; cursor: pointer;
}
.select select option { background: var(--surface-container); color: var(--on-surface); }
.select svg { position: absolute; right: 8px; width: 18px; height: 18px; pointer-events: none; color: var(--on-surface-variant); }

/* ============ Grid / cards ============ */
.grid {
  display: grid; gap: 16px; padding-bottom: 48px;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}
@media (max-width: 400px) { .grid { grid-template-columns: 1fr; } }

.card {
  position: relative; display: flex; flex-direction: column; gap: 16px;
  padding: 20px; border-radius: var(--radius-md);
  background: var(--surface-low); color: var(--on-surface);
  cursor: pointer; overflow: hidden;
  transition: background-color .2s var(--ease);
  animation: fade-in .3s var(--ease) both;
}
.card::before { color: var(--on-surface); }
.card:hover::before { opacity: .04; }
.card:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
@keyframes fade-in { from { opacity: 0; transform: translateY(6px); } }

.card__head { display: flex; gap: 16px; align-items: center; }
.card__titles { min-width: 0; flex: 1; }
.card__name { margin: 0; font-size: 16px; line-height: 24px; font-weight: 500; letter-spacing: .15px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card__sub { margin: 0; color: var(--on-surface-variant); font-size: 12px; line-height: 16px; letter-spacing: .4px; }
/* 描述固定两行：不能用 flex: 1 拉伸，否则高度变大，省略号出现在中间而下面还露出文字 */
.card__desc {
  margin: 0; color: var(--on-surface-variant); flex: none;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
  height: 40px;
}
.card__meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.card__actions { display: flex; gap: 12px; align-items: center; justify-content: flex-end; }
/* 左侧说明文字过长时单行省略，按钮保持完整宽度 */
.card__actions > .card__sub { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card__actions > .btn, .card__actions > .tag { flex: none; }

.avatar {
  width: 48px; height: 48px; border-radius: var(--radius-md); flex: none;
  display: grid; place-items: center; overflow: hidden;
  font-size: 20px; font-weight: 500;
  background: var(--primary-container); color: var(--on-primary-container);
}
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar--img { background: transparent; border-radius: 0; }
.avatar--img img { object-fit: contain; }
.avatar--lg { width: 56px; height: 56px; border-radius: var(--radius-lg); font-size: 24px; }

.tag {
  display: inline-flex; align-items: center; gap: 4px; height: 24px; padding: 0 8px;
  border-radius: var(--radius-sm); background: var(--surface-highest);
  color: var(--on-surface-variant); font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: .5px;
  white-space: nowrap;
}
.tag svg { width: 14px; height: 14px; }
.tag--link { color: var(--primary); text-decoration: none !important; }
.tag--link:hover { background: color-mix(in srgb, var(--primary) 14%, var(--surface-highest)); }
.tag--primary { background: var(--primary-container); color: var(--on-primary-container); }

/* 徽标：竹纸自有 / 开源 */
.badges { display: inline-flex; gap: 6px; flex-wrap: wrap; vertical-align: middle; }
.card__titles .badges { display: flex; margin: 4px 0 2px; }
.dialog__titles h2 .badges { margin-left: 8px; position: relative; top: -2px; }
.badge {
  display: inline-flex; align-items: center; gap: 4px; height: 22px; padding: 0 8px 0 6px;
  border-radius: 11px; white-space: nowrap;
  font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: .4px;
}
.badge svg { width: 14px; height: 14px; }
.badge--own { background: var(--success-container); color: var(--on-success-container); }
.badge--open { background: var(--tertiary-container); color: var(--on-tertiary-container); }
.badge--source { background: transparent; color: var(--on-surface-variant); box-shadow: inset 0 0 0 1px var(--outline-variant); }
.card--own { box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--on-success-container) 25%, transparent); }
.chip svg + svg { display: block; width: 16px; height: 16px; }
.chip--own svg + svg { color: var(--on-success-container); }
.chip--own[aria-selected="true"] { background: var(--success-container); color: var(--on-success-container); }
.chip--open[aria-selected="true"] { background: var(--tertiary-container); color: var(--on-tertiary-container); }
.dialog__note { display: inline-flex; align-items: center; gap: 6px; color: var(--on-surface-variant); font-size: 13px; }
.dialog__note svg { width: 16px; height: 16px; }

/* ============ Buttons ============ */
.btn {
  position: relative; height: 40px; padding: 0 24px; border: 0; border-radius: 20px;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-weight: 500; letter-spacing: .1px; cursor: pointer; overflow: hidden; white-space: nowrap;
  text-decoration: none !important;
}
.btn svg { width: 18px; height: 18px; }
.btn--filled { background: var(--primary); color: var(--on-primary); padding-left: 16px; }
.btn--tonal { background: var(--secondary-container); color: var(--on-secondary-container); padding-left: 16px; }
.btn--text { background: transparent; color: var(--primary); padding: 0 12px; }
.btn--outlined { background: transparent; color: var(--primary); border: 1px solid var(--outline); }

/* ============ Skeleton / empty ============ */
.skeleton {
  height: 220px; border-radius: var(--radius-md); background: var(--surface-low);
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: .5; } }
.empty { padding: 64px 0 96px; text-align: center; color: var(--on-surface-variant); }
.empty svg { width: 48px; height: 48px; stroke-width: 1.5; }
.empty p { margin: 12px 0 0; font-size: 16px; }

/* ============ Dialog ============ */
.dialog {
  width: min(640px, calc(100vw - 32px)); max-height: min(86vh, 900px);
  padding: 0; border: 0; border-radius: var(--radius-xl);
  background: var(--surface-high); color: var(--on-surface);
  overflow: hidden; display: none; flex-direction: column;
}
.dialog[open] { display: flex; animation: dlg-in .25s var(--ease); }
.dialog::backdrop { background: var(--scrim); }
@keyframes dlg-in { from { opacity: 0; transform: scale(.96); } }
@media (max-width: 600px) {
  .dialog { width: 100vw; max-width: 100vw; height: 100%; max-height: 100%; border-radius: 0; margin: 0; }
}
.dialog__head { display: flex; gap: 16px; align-items: center; padding: 24px 12px 16px 24px; }
.dialog__titles { flex: 1; min-width: 0; }
.dialog__titles h2 { margin: 0; font-size: 24px; line-height: 32px; font-weight: 400; }
.dialog__titles p { margin: 2px 0 0; color: var(--on-surface-variant); }
.dialog__body { padding: 0 24px 24px; overflow-y: auto; }
.dialog__desc { margin: 0 0 16px; color: var(--on-surface-variant); white-space: pre-wrap; }
.dialog__links { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }

.tag--soon { height: 32px; padding: 0 14px; border-radius: 16px; background: var(--secondary-container); color: var(--on-secondary-container); }
.empty-version { display: flex; align-items: center; gap: 8px; margin: 16px 0 0; padding: 16px; border-radius: var(--radius-lg); background: var(--surface-container); color: var(--on-surface-variant); }
.empty-version svg { width: 18px; height: 18px; }
.badge--group { background: var(--primary-container); color: var(--on-primary-container); }
.group-names { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
#dlgBack { margin: 0 -4px 0 -12px; }
.member-list { display: flex; flex-direction: column; gap: 8px; }
.member {
  position: relative; display: flex; align-items: center; gap: 16px; width: 100%; padding: 14px 12px 14px 16px;
  border: 0; border-radius: var(--radius-lg); background: var(--surface-container); color: var(--on-surface);
  text-align: left; cursor: pointer; overflow: hidden; font: inherit;
}
.member::before { content: ""; position: absolute; inset: 0; background: currentColor; opacity: 0; transition: opacity .15s var(--ease); pointer-events: none; }
.member:hover::before { opacity: .06; }
.member:active::before { opacity: .1; }
.member .avatar { width: 44px; height: 44px; font-size: 18px; }
.member__body { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.member__title { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 16px; line-height: 24px; font-weight: 500; }
.member__desc { color: var(--on-surface-variant); font-size: 13px; line-height: 18px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.member__meta { color: var(--on-surface-variant); font-size: 12px; line-height: 16px; }
.member__chev { color: var(--on-surface-variant); flex: none; }
.limit-note {
  display: flex; align-items: center; gap: 8px; margin: 12px 0 0; padding: 8px 12px;
  border-radius: var(--radius-sm); background: var(--surface-container); color: var(--on-surface-variant); font-size: 13px;
}
.limit-note svg { width: 16px; height: 16px; }
.section-label { margin: 24px 0 8px; font-size: 14px; line-height: 20px; font-weight: 500; color: var(--primary); letter-spacing: .1px; }

.version {
  border-radius: var(--radius-lg); background: var(--surface-container);
  margin-bottom: 12px; overflow: hidden;
}
.version > summary {
  list-style: none; cursor: pointer; padding: 16px;
  display: flex; align-items: center; gap: 12px;
}
.version > summary::-webkit-details-marker { display: none; }
.version > summary:hover { background: color-mix(in srgb, var(--on-surface) 5%, transparent); }
.version__name { font-weight: 500; font-size: 16px; }
.version__date { color: var(--on-surface-variant); margin-left: auto; font-size: 12px; }
.version__chev { width: 20px; height: 20px; color: var(--on-surface-variant); transition: transform .2s var(--ease); }
.version[open] .version__chev { transform: rotate(180deg); }
.version__notes code { font-family: var(--mono); font-size: 12px; }
.version__notes .md-h { color: var(--on-surface); }
.version__notes {
  margin: 4px 16px 16px; padding: 12px 16px; border-radius: var(--radius-md);
  background: var(--surface-lowest); color: var(--on-surface-variant);
  white-space: pre-wrap; font-size: 13px;
}

.file {
  display: grid; grid-template-columns: auto 1fr auto; gap: 4px 12px; align-items: center;
  padding: 12px 8px 12px 16px; border-top: 1px solid var(--outline-variant);
}
.file__icon {
  width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center;
  background: var(--surface-highest); color: var(--on-surface-variant);
}
.file__icon svg { width: 20px; height: 20px; }
.file__info { min-width: 0; }
.file__name { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file__meta { color: var(--on-surface-variant); font-size: 12px; line-height: 16px; display: flex; gap: 8px; flex-wrap: wrap; }
.file__actions { grid-column: 2 / -1; display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.btn__tag {
  margin-left: 2px; padding: 0 6px; border-radius: 8px; font-size: 11px; line-height: 16px; font-weight: 500;
  background: color-mix(in srgb, var(--on-primary) 22%, transparent);
}
.file__hash {
  grid-column: 2 / -1; display: flex; align-items: center; gap: 4px; min-width: 0;
  font-family: var(--mono); font-size: 11px; color: var(--on-surface-variant);
}
.file__hash code { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.file__hash button {
  border: 0; background: transparent; color: var(--primary); cursor: pointer;
  font: 500 12px var(--font); padding: 2px 6px; border-radius: var(--radius-xs); flex: none;
}
.file__hash button:hover { background: color-mix(in srgb, var(--primary) 10%, transparent); }
.file__icon { position: relative; width: 44px; height: 44px; border-radius: var(--radius-md); }
.file__ext {
  position: absolute; bottom: -4px; left: 50%; transform: translateX(-50%);
  padding: 0 4px; border-radius: 4px; font: 700 9px/14px var(--font); letter-spacing: .3px;
  background: var(--surface-container); color: inherit; white-space: nowrap;
}
.file--installer .file__icon { background: var(--primary-container); color: var(--on-primary-container); }
.file--archive .file__icon { background: var(--tertiary-container); color: var(--on-tertiary-container); }
.file--app .file__icon { background: var(--secondary-container); color: var(--on-secondary-container); }
.file--image .file__icon { background: var(--success-container); color: var(--on-success-container); }
.file__kind { font-weight: 500; color: var(--on-surface); }
.btn--sm { height: 32px; padding: 0 12px 0 10px !important; font-size: 13px; }
.version--latest { box-shadow: inset 0 0 0 2px var(--primary-container); }

/* ============ Snackbar / footer ============ */
.snackbar {
  position: fixed; left: 50%; bottom: 24px; z-index: 100;
  transform: translate(-50%, 24px); opacity: 0; pointer-events: none;
  min-width: 200px; max-width: calc(100vw - 32px); padding: 14px 16px;
  border-radius: var(--radius-xs); background: var(--inverse-surface); color: var(--inverse-on-surface);
  box-shadow: 0 3px 8px rgba(0,0,0,.2);
  transition: transform .25s var(--ease), opacity .25s var(--ease);
}
.snackbar.show { transform: translate(-50%, 0); opacity: 1; }

.footer {
  padding: 24px; text-align: center; color: var(--on-surface-variant); font-size: 12px;
  border-top: 1px solid var(--outline-variant);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}