/* ============ 设计令牌 ============ */
:root {
  --bg: #f5f6f8;
  --bg-soft: #eef0f4;
  --surface: #ffffff;
  --surface-2: #fbfcfd;

  --border: #e8eaef;
  --border-strong: #dcdfe7;

  --text: #1c2230;
  --text-2: #545e6e;
  --text-3: #8b93a3;

  --primary: #2f62f0;
  --primary-hover: #2451d0;

  --amber-bg: #fff8ec;
  --amber-border: #f2dcae;
  --amber-label: #9a6a10;
  --amber-value: #8a4b06;

  --radius: 15px;
  --radius-sm: 9px;

  --shadow-sm: 0 1px 2px rgba(20, 28, 48, .05), 0 1px 3px rgba(20, 28, 48, .05);
  --shadow-md: 0 2px 4px rgba(20, 28, 48, .05), 0 8px 20px -8px rgba(20, 28, 48, .12);
  --shadow-lg: 0 10px 24px -10px rgba(20, 28, 48, .18), 0 22px 46px -18px rgba(20, 28, 48, .14);

  --ease: cubic-bezier(.34, .8, .36, 1);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  /* 轻量等宽：全部使用系统内置字体，零网络下载
   * 注意：中文字体必须排在通用族 monospace 之前，否则会被通用族截断，
   * Windows 上会回退到宋体点阵字形，出现锯齿感 */
  font-family: ui-monospace, "SF Mono", SFMono-Regular, "Cascadia Mono", Consolas,
    "Liberation Mono", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei",
    "Hiragino Sans GB", "DejaVu Sans Mono", monospace;
  font-size: 15.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
  /* 不使用 text-rendering: geometricPrecision —— 它会关闭字形微调(hinting)，
   * 在 Windows ClearType 下反而使笔画发虚、发毛 */
}

/* 顶部带一层极淡的氛围色，避免纯白单调 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background:
    radial-gradient(900px 420px at 12% -6%, #e8eeff 0%, rgba(232, 238, 255, 0) 62%),
    radial-gradient(820px 400px at 92% 4%, #f0eafa 0%, rgba(240, 234, 250, 0) 60%);
}

h1, h2, h3, p { margin: 0; }
button { font: inherit; color: inherit; }
a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

::selection { background: #c9d6ff; }

/* ============ 顶部栏 ============ */
.topbar {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(245, 246, 248, .82);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--border);
}

.topbar__inner {
  max-width: 1560px;
  margin: 0 auto;
  padding: 12px 26px 10px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.brand__mark {
  font-size: 26px;
  line-height: 1;
  filter: drop-shadow(0 2px 3px rgba(20, 28, 48, .14));
}

.brand__text h1 {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .01em;
  white-space: nowrap;
}

.brand__sub {
  font-size: 12.5px;
  color: var(--text-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.brand__sub b {
  color: var(--text-2);
  font-weight: 600;
}

.topbar__actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

/* 搜索框 */
.search {
  position: relative;
  display: flex;
  align-items: center;
  width: 330px;
  max-width: 40vw;
  background: var(--surface);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
  transition: border-color .18s var(--ease), box-shadow .18s var(--ease);
}

.search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(47, 98, 240, .14), var(--shadow-sm);
}

.search__icon {
  margin-left: 13px;
  color: var(--text-3);
  flex: 0 0 auto;
}

.search input {
  flex: 1 1 auto;
  min-width: 0;
  border: 0;
  background: transparent;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--text);
}

.search input:focus { outline: none; }
.search input::placeholder { color: var(--text-3); }
.search input::-webkit-search-cancel-button { display: none; }

.search__clear {
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  margin-right: 8px;
  border: 0;
  border-radius: 50%;
  background: var(--bg-soft);
  color: var(--text-2);
  cursor: pointer;
  transition: background .15s, transform .15s;
}
.search__clear:hover { background: #e3e7ee; transform: scale(1.08); }
.search__clear:active { transform: scale(.92); }

/* 分类筛选条 */
.chips {
  max-width: 1560px;
  margin: 0 auto;
  padding: 0 26px 13px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}
.chips::-webkit-scrollbar { display: none; }

.chip {
  flex: 0 0 auto;
  height: 32px;
  padding: 0 13px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  transition: all .16s var(--ease);
}
.chip:hover { border-color: var(--border-strong); color: var(--text); transform: translateY(-1px); }
.chip:active { transform: translateY(0) scale(.96); }
.chip--active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
  box-shadow: 0 3px 10px -3px rgba(47, 98, 240, .55);
}
.chip--active:hover { background: var(--primary-hover); color: #fff; }

/* ============ 主区 ============ */
.wrap {
  max-width: 1560px;
  margin: 0 auto;
  padding: 14px 26px 40px;
}

.resultbar {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-3);
}
.resultbar b { color: var(--text-2); font-weight: 600; }
.resultbar .dot { color: var(--border-strong); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(278px, 1fr));
  gap: 16px;
}

/* ============ 卡片 ============ */
.card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 15px 15px 13px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform .2s var(--ease), box-shadow .2s var(--ease), border-color .2s var(--ease);
}

/* 首次加载时逐张发牌，后续筛选不重复播放 */
.grid--animate .card {
  animation: cardDeal .52s var(--ease) both;
  animation-delay: var(--deal-delay, 0ms);
}

@keyframes cardDeal {
  0% {
    opacity: 0;
    transform: translate3d(0, 28px, 0) rotate(2deg) scale(.96);
  }
  58% {
    opacity: 1;
    transform: translate3d(0, -3px, 0) rotate(-.35deg) scale(1.01);
  }
  100% {
    opacity: 1;
    transform: translate3d(0, 0, 0) rotate(0) scale(1);
  }
}

/* 切换分类：新卡片从下方进入；旧卡片由 JS 生成固定定位副本后离开 */
.card--category-enter {
  animation: cardCategoryEnter .42s var(--ease) both;
  animation-delay: var(--category-delay, 0ms);
}

@keyframes cardCategoryEnter {
  from {
    opacity: 0;
    transform: translate3d(0, 24px, 0) scale(.96);
  }
  to {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1);
  }
}

.card--leaving {
  position: fixed;
  z-index: 20;
  margin: 0;
  pointer-events: none;
  transform-origin: center center;
  animation: cardLeave .42s var(--ease) both;
}

@keyframes cardLeave {
  from {
    opacity: 1;
    transform: translate3d(0, 0, 0) scale(1) rotate(0);
  }
  to {
    opacity: 0;
    transform: translate3d(0, -22px, 0) scale(.94) rotate(-1.5deg);
  }
}

.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  pointer-events: none;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transition: opacity .2s var(--ease);
}

/* 荐徽标：金属质感挂签 + 微光扫过 */
.card__pick {
  position: absolute;
  top: -9px;
  left: 14px;
  z-index: 3;
  min-width: 32px;
  height: 30px;
  padding: 0 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9px 9px 11px 11px;
  background: linear-gradient(180deg, #ffe7a3 0%, #f4c34e 48%, #d9941a 100%);
  border: 1px solid #b87f0e;
  color: #5a3a05;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 1px;
  text-shadow: 0 1px 0 rgba(255, 255, 255, .55);
  box-shadow: 0 4px 10px -3px rgba(160, 105, 5, .65), inset 0 1px 0 rgba(255, 255, 255, .75);
  overflow: hidden;
  pointer-events: none;
}
.card__pick::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 32%, rgba(255, 255, 255, .9) 48%, rgba(255, 255, 255, .2) 56%, transparent 72%);
  transform: translateX(-130%);
  animation: pickShine 3.4s var(--ease) infinite;
}
@keyframes pickShine {
  0%, 58% { transform: translateX(-130%); }
  100% { transform: translateX(130%); }
}

.card:hover {
  transform: translateY(-4px);
  border-color: #d8dce6;
}
.card:hover::after { opacity: 1; }

.card__head {
  display: flex;
  align-items: center;
  gap: 11px;
}

.logo {
  position: relative;
  flex: 0 0 auto;
  width: 42px;
  height: 42px;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: .02em;
  color: #fff;
  background: var(--c, #5b6b8c);
  box-shadow: 0 3px 8px -2px color-mix(in srgb, var(--c, #5b6b8c) 65%, transparent);
  user-select: none;
  overflow: hidden;
}
.logo--glyph { font-size: 19px; font-weight: 700; }
.logo--img { background: var(--surface); box-shadow: var(--shadow-sm); }
/* 绝对定位让图片盒子恒等于图标框尺寸：
 * 若用 height:100%，遇到竖长比例的图标（如 130×150 的 SVG）百分比高度无法解析，
 * 浏览器会退回按宽高比推算高度，导致图片超出图标框被裁切 */
.logo__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.card__title { min-width: 0; flex: 1 1 auto; }
.card__title h3 {
  font-size: 16px;
  font-weight: 650;
  letter-spacing: .01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.card__cat {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: var(--text-3);
  background: var(--bg-soft);
  border-radius: 5px;
  padding: 1px 7px;
  margin-top: 3px;
}

/* 分享按钮 */
.share {
  flex: 0 0 auto;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
  color: var(--text-3);
  cursor: pointer;
  transition: all .18s var(--ease);
}
.share:hover {
  border-color: #b9c8f5;
  color: var(--primary);
  background: #eef2fe;
  transform: translateY(-1px);
}
.share:active { transform: scale(.9); }
.share.pop { animation: sharePop .4s var(--ease); }
@keyframes sharePop {
  0% { transform: scale(1); }
  35% { transform: scale(1.28); }
  60% { transform: scale(.94); }
  100% { transform: scale(1); }
}

/* 简介：固定两行高度，超出省略 */
.desc {
  margin-top: 10px;
  height: 42px; /* 2 行 × 1.5 行距 */
  font-size: 14px;
  color: var(--text-2);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 福利高亮区：所有卡片等高 */
.perk {
  margin-top: 10px;
  /* flex 撑满卡片剩余空间，让同一行卡片的福利框底边对齐；
   * 用 min-height 而非固定 height，说明较长的卡片才不会把邀请码挤出框外 */
  flex: 1 0 auto;
  min-height: 158px;
  padding: 11px 12px;
  background: var(--amber-bg);
  border: 1px solid var(--amber-border);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
}

.perk__label {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .03em;
  color: var(--amber-label);
}

.perk__value {
  margin-top: 5px;
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -.01em;
  color: var(--amber-value);
  line-height: 1.25;
}

.perk__note {
  margin-top: 3px;
  flex: 1 1 auto;
  font-size: 12.8px;
  color: #8d7440;
  line-height: 1.45;
}

.perk__code {
  margin-top: 9px;
  padding-top: 9px;
  border-top: 1px dashed #e8d5a8;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--amber-label);
}
.code__label { flex: none; }
/* 邀请码滚动视口：占据标签与复制按钮之间的空间，超长时裁剪并滚动 */
.code__clip {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}
.code__track {
  display: flex;
  width: max-content;
}
.code__chunk { flex: none; }
.perk__code--scroll .code__chunk { padding-right: 2ch; }
.perk__code code {
  font-family: "SF Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .05em;
  white-space: nowrap;
  color: #6d3b04;
  background: #fff;
  border: 1px solid var(--amber-border);
  border-radius: 6px;
  padding: 2px 8px;
}
.copy {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 24px;
  padding: 0 9px;
  border: 1px solid var(--amber-border);
  border-radius: 6px;
  background: #fff;
  color: #8a5a10;
  font-size: 11.5px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
  transition: all .16s var(--ease);
}
.copy__text { white-space: nowrap; }
.copy:hover { background: #fdf3df; border-color: #e0bd76; color: #6d3b04; }
.copy:active { transform: scale(.95); }
.copy.copied {
  background: #eaf7ee;
  border-color: #a8d8b8;
  color: #25834a;
}

/* 标签 */
.tags {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tag {
  font-size: 12.5px;
  cursor: default;
  color: var(--text-2);
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-soft) 100%);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 2px 8px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 1px 2px -1px rgba(20, 28, 48, .1);
  transition: color .15s, background .15s, border-color .15s, box-shadow .15s;
}
.card:hover .tag { border-color: #dde1ea; }

/* —— 主分类标签（层级体系，固定位于各卡片标签列最前）—— */
/* API：父级标签，涵盖官方 API 与公益/中转 API */
.tag--api {
  background: linear-gradient(180deg, #f5f3ff 0%, #ede9fe 60%, #ddd6fe 100%);
  border-color: #b9a8f5;
  color: #4c1d95;
  font-weight: 650;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .85), 0 1px 2px -1px rgba(76, 29, 149, .3);
}
.tag--api:hover { background: linear-gradient(180deg, #f7f5ff 0%, #f0ecff 60%, #e2dbff 100%); }

/* 官方应用：官方出品，非中转站 */
.tag--official {
  background: linear-gradient(180deg, #f0fdfa 0%, #ccfbf1 60%, #99f6e4 100%);
  border-color: #5eead4;
  color: #115e59;
  font-weight: 600;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .85), 0 1px 2px -1px rgba(17, 94, 89, .25);
}
.tag--official:hover { background: linear-gradient(180deg, #f2fdfb 0%, #d6fdf3 60%, #a9f8e8 100%); }

/* —— 特色标签：每个平台独立配色 —— */
.tag--github {
  background: linear-gradient(180deg, #2b3038 0%, #1c1f24 100%);
  border-color: #0f1216;
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .14), 0 1px 2px -1px rgba(0, 0, 0, .4);
}
.tag--github:hover { background: linear-gradient(180deg, #353b45 0%, #23272e 100%); }

.tag--linuxdo {
  background: linear-gradient(180deg, #4a4f57 0%, #3d4148 100%);
  border-color: #2d3036;
  color: #f5c518;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12), 0 1px 2px -1px rgba(0, 0, 0, .35);
}
.tag--linuxdo:hover { background: linear-gradient(180deg, #565c66 0%, #474c54 100%); }

/* 金卡标签：金属渐变 + 微光扫过（保留备选，当前未启用） */
.tag--gold {
  background: linear-gradient(135deg, #f6e0a8 0%, #d4a84b 45%, #b8860b 55%, #f3e2b3 100%);
  border-color: #c9a45c;
  color: #4a3408;
  font-weight: 650;
  position: relative;
  overflow: hidden;
}
.tag--gold::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 30%, rgba(255, 255, 255, .75) 48%, rgba(255, 255, 255, .2) 52%, transparent 70%);
  transform: translateX(-120%);
  animation: goldShine 3.2s var(--ease) infinite;
}
@keyframes goldShine {
  0%, 60% { transform: translateX(-120%); }
  100% { transform: translateX(120%); }
}

/* 公益标签：绿色卡片质感 */
.tag--green {
  background: linear-gradient(180deg, #f0faf4 0%, #d6f0e1 60%, #c4e8d3 100%);
  border-color: #9bd8b8;
  color: #14532d;
  font-weight: 600;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .8), 0 1px 2px -1px rgba(20, 83, 45, .25);
}

/* 免费标签：黑金卡特效 */
.tag--blackgold {
  background: linear-gradient(180deg, #3a3218 0%, #1c180c 60%, #2a2410 100%);
  border-color: #a8780f;
  color: #f5d98a;
  font-weight: 650;
  position: relative;
  overflow: hidden;
  text-shadow: 0 1px 1px rgba(0, 0, 0, .5);
  box-shadow: inset 0 1px 0 rgba(255, 220, 140, .22), 0 2px 4px -1px rgba(0, 0, 0, .5);
}
.tag--blackgold::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 32%, rgba(255, 215, 130, .55) 48%, rgba(255, 235, 190, .25) 54%, transparent 70%);
  transform: translateX(-120%);
  animation: goldShine 3.6s var(--ease) infinite;
}

/* 炫彩标签：流动渐变底 */
.tag--holographic {
  background: linear-gradient(120deg, #e879f9, #818cf8, #38bdf8, #f472b6, #e879f9);
  background-size: 220% 100%;
  border-color: rgba(255, 255, 255, .35);
  color: #fff;
  font-weight: 650;
  animation: holoFlow 5s linear infinite;
  text-shadow: 0 1px 2px rgba(0, 0, 0, .3);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .4), 0 2px 5px -1px rgba(124, 58, 237, .45);
}
@keyframes holoFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 220% 50%; }
}

.tag--free {
  background: #e9f7ef;
  border-color: #b8e2c9;
  color: #1d7a44;
}

/* 国产模型标签：蓝色卡片质感 */
.tag--model {
  background: linear-gradient(180deg, #f0f6ff 0%, #d9e7ff 60%, #c8dcff 100%);
  border-color: #9dbdf5;
  color: #1e3a8a;
  font-weight: 600;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .85), 0 1px 2px -1px rgba(30, 58, 138, .25);
}
.tag--email {
  background: linear-gradient(180deg, #fffcf3 0%, #fdf0d8 100%);
  border-color: #ecd9a8;
  color: #92600a;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .85), 0 1px 2px -1px rgba(146, 96, 10, .22);
}
.tag--edu {
  background: linear-gradient(180deg, #f6faff 0%, #e2effe 100%);
  border-color: #bcd6f5;
  color: #1e5aab;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .85), 0 1px 2px -1px rgba(30, 90, 171, .22);
}
.tag--vip {
  background: linear-gradient(180deg, #2b3748 0%, #1f2937 100%);
  border-color: #111827;
  color: #fbbf24;
  font-weight: 650;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .12), 0 1px 2px -1px rgba(0, 0, 0, .4);
}
.tag--nolimit {
  background: linear-gradient(180deg, #fafbfc 0%, #f0f2f5 100%);
  border-color: #d8dde5;
  color: #6b7280;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .9), 0 1px 2px -1px rgba(0, 0, 0, .1);
}

/* 付费标签：红色立体按钮 */
.tag--paid {
  background: linear-gradient(180deg, #f05252 0%, #dc2626 55%, #b91c1c 100%);
  border-color: #991b1b;
  color: #fff;
  font-weight: 650;
  text-shadow: 0 1px 1px rgba(0, 0, 0, .28);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .35), 0 2px 4px -1px rgba(185, 28, 28, .5);
}
.tag--paid:hover { background: linear-gradient(180deg, #f26262 0%, #e23434 55%, #c12121 100%); }

/* 限制条件：过长时不换行也不省略，超出部分以滚动字幕呈现（逻辑见 app.js）*/
.cond {
  margin-top: 10px;
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 12.5px;
  color: var(--text-3);
  line-height: 1.45;
}
.cond > svg { flex: none; }
/* 裁剪视口从图标右侧开始，文字滚动时才不会压到图标上 */
.cond__clip {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
}
/* 滚动轨道：宽度取内容实际宽度，不受裁剪视口约束 */
.cond__track {
  display: flex;
  width: max-content;
}
/* 单份文案 + 尾部间隔（4 个空格宽），两份首尾相接即可无缝循环 */
.cond__chunk {
  flex: none;
  padding-right: 4ch;
}
.cond__text { white-space: nowrap; }
/* 无障碍：系统开启「减少动态效果」时回退为折行显示，保证内容仍可读 */
.cond--wrap .cond__clip { overflow: visible; }
.cond--wrap .cond__track { display: block; width: auto; }
.cond--wrap .cond__chunk { padding-right: 0; }
.cond--wrap .cond__text { white-space: normal; }
.cond svg { flex: 0 0 auto; margin-top: 2px; }

/* 卡片底部：CTA */
.card__foot {
  margin-top: auto;
  padding-top: 11px;
  display: flex;
  align-items: center;
  gap: 9px;
}

.btn {
  flex: 1 1 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 38px;
  border: 0;
  border-radius: 10px;
  background: var(--primary);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 2px 6px -2px rgba(47, 98, 240, .5);
  transition: background .16s var(--ease), transform .12s var(--ease), box-shadow .16s var(--ease);
}
.btn:hover { background: var(--primary-hover); transform: translateY(-1px); box-shadow: 0 5px 14px -4px rgba(47, 98, 240, .6); }
.btn:active { transform: translateY(0) scale(.975); }
.btn svg { transition: transform .16s var(--ease); }
.btn:hover svg { transform: translateX(2px); }

.btn--ghost {
  flex: 0 0 auto;
  background: var(--surface);
  color: var(--text-2);
  border: 1px solid var(--border-strong);
  box-shadow: var(--shadow-sm);
}
.btn--ghost:hover { background: var(--surface-2); color: var(--text); border-color: var(--border-strong); box-shadow: var(--shadow-md); }

/* ============ 空状态 ============ */
.empty {
  min-height: calc(100vh - 240px);
  padding: 40px 20px 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}
/* display:flex 会覆盖 hidden 属性，需显式声明 */
.empty[hidden] { display: none; }
.empty svg { display: block; margin: 0 auto 14px; }
.empty h3 {
  font-size: 17px;
  font-weight: 650;
  color: var(--text);
}
.empty p {
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--text-3);
}
.empty .btn { margin-top: 18px; padding: 0 22px; flex: 0 0 auto; }

/* ============ 页脚 ============ */
.foot {
  border-top: 1px solid var(--border);
  padding: 22px 26px 30px;
  text-align: center;
  color: var(--text-3);
  font-size: 12.5px;
}
.foot p + p { margin-top: 4px; }
/* 隐蔽入口：看起来只是个装饰图标，连续点按 5 下才进入管理台 */
.foot__secret {
  display: inline-block;
  margin-top: 6px;
  font-size: 15px;
  opacity: .55;
  cursor: default;
  user-select: none;
  -webkit-user-select: none;
  transition: opacity .2s, transform .15s;
}
.foot__secret:hover { opacity: .9; }
.foot__secret.tap { transform: scale(1.25); opacity: 1; }
.foot__secret.ready {
  opacity: 1;
  animation: secretPulse .7s var(--ease) infinite;
}
@keyframes secretPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.18); }
}

/* ============ Toast：右上角浅色小气泡 ============ */
.toasts {
  position: fixed;
  z-index: 100;
  top: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}
.toast {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: min(92vw, 340px);
  padding: 9px 14px;
  background: rgba(255, 255, 255, .96);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  box-shadow: 0 6px 20px -6px rgba(20, 28, 48, .18), 0 2px 6px -2px rgba(20, 28, 48, .1);
  animation: toastIn .26s var(--ease) both;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.toast.out { animation: toastOut .22s var(--ease) both; }
.toast .ico { font-size: 14px; line-height: 1; }
@keyframes toastIn {
  from { opacity: 0; transform: translateX(24px) scale(.96); }
  to { opacity: 1; transform: none; }
}
@keyframes toastOut {
  to { opacity: 0; transform: translateX(20px) scale(.97); }
}

/* ============ 友情提醒：右下角常驻气泡 ============ */
.notice-bubble {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 200;
  width: 384px;
  max-width: calc(100vw - 24px);
  background: rgba(255, 255, 255, .97);
  border: 1px solid #e4e8f0;
  border-radius: 16px;
  box-shadow: 0 18px 44px -16px rgba(20, 28, 48, .3), 0 6px 16px -8px rgba(20, 28, 48, .16);
  padding: 18px 18px 0;
  overflow: hidden;
  /* 入场：右下滑入回弹 → 落位 → 左右摇摆；同时叠四轮红色扩散环抓余光 */
  animation:
    noticeIn 2.1s var(--ease) both,
    noticePulse 1s ease-out .4s 4 forwards;
}
.notice-bubble[hidden] { display: none; }
.notice-bubble.out { animation: noticeOut .22s var(--ease) both; }

@keyframes noticeIn {
  /* 1. 从右下角滑入，带弹性过冲 */
  0%   { opacity: 0; transform: translate(44px, 30px) scale(.88); }
  36%  { opacity: 1; transform: translate(-8px, -4px) scale(1.045); }
  44%  { transform: translate(3px, 1px) scale(.995); }
  50%  { transform: none; }
  /* 2. 停顿一拍后左右摇摆，余光也能察觉 */
  58%  { transform: translateX(-14px) rotate(-2deg); }
  65%  { transform: translateX(12px) rotate(1.7deg); }
  72%  { transform: translateX(-8px) rotate(-1.1deg); }
  79%  { transform: translateX(5px) rotate(.7deg); }
  86%  { transform: translateX(-2.5px) rotate(-.35deg); }
  100% { transform: none; }
}

/* 扩散环：红色柔光向外扩散两轮，最容易被余光捕捉 */
@keyframes noticePulse {
  0% {
    box-shadow:
      0 18px 44px -16px rgba(20, 28, 48, .3),
      0 6px 16px -8px rgba(20, 28, 48, .16),
      0 0 0 0 rgba(220, 38, 38, .45);
  }
  45% {
    box-shadow:
      0 18px 44px -16px rgba(20, 28, 48, .3),
      0 6px 16px -8px rgba(20, 28, 48, .16),
      0 0 26px 9px rgba(220, 38, 38, .62);
  }
  100% {
    box-shadow:
      0 18px 44px -16px rgba(20, 28, 48, .3),
      0 6px 16px -8px rgba(20, 28, 48, .16),
      0 0 34px 16px rgba(220, 38, 38, 0);
  }
}
@keyframes noticeOut {
  to { opacity: 0; transform: translateY(10px) scale(.98); }
}

.notice__close {
  position: absolute;
  top: 11px;
  right: 11px;
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text-3);
  cursor: pointer;
  transition: all .15s var(--ease);
}
.notice__close:hover { color: #dc2626; border-color: #f3b8b8; background: #fef2f2; transform: scale(1.08); }
.notice__close:active { transform: scale(.92); }

.notice__head {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}
/* 盾牌图标：与气泡摇摆同步晃一下，像敲响铃铛 */
.notice__icon {
  flex: none;
  width: 23px;
  height: 23px;
  transform-origin: 50% 16%;
  animation: noticeBell 1.05s var(--ease) .95s;
}
@keyframes noticeBell {
  0%, 100% { transform: rotate(0) scale(1); }
  12%  { transform: rotate(-17deg) scale(1.18); }
  28%  { transform: rotate(14deg) scale(1.13); }
  44%  { transform: rotate(-10deg) scale(1.08); }
  60%  { transform: rotate(6deg) scale(1.03); }
  76%  { transform: rotate(-3deg) scale(1.01); }
  90%  { transform: rotate(1.5deg) scale(1); }
}
.notice__body {
  margin-top: 11px;
  font-size: 13.6px;
  line-height: 1.75;
  color: var(--text-2);
}
.notice__body b {
  color: #dc2626;
  font-weight: 700;
}
.notice__body .muted { color: var(--text-3); }
.notice__link {
  color: var(--primary);
  text-decoration: none;
  border-bottom: 1px dashed rgba(47, 98, 240, .4);
  padding-bottom: 1px;
  transition: color .15s, border-color .15s;
}
.notice__link:hover { color: var(--primary-hover); border-color: var(--primary); }

.notice__bar {
  margin-top: 13px;
  height: 3px;
  background: var(--bg-soft);
}
.notice__bar i {
  display: block;
  height: 100%;
  width: 100%;
  background: linear-gradient(90deg, #2f62f0, #6d8bf5);
  transform-origin: left center;
  animation: noticeCountdown 30s linear both;
}
@keyframes noticeCountdown {
  from { transform: scaleX(1); }
  to { transform: scaleX(0); }
}

@media (max-width: 560px) {
  .notice-bubble { right: 10px; bottom: 10px; width: calc(100vw - 20px); }
}

/* ============ 联系站长：QQ 头像悬浮气泡 ============ */
.qq-fab {
  position: fixed;
  right: 22px;
  /* 底部偏移交给 JS 控制：默认贴角，弹窗出现时上移让位 */
  bottom: 20px;
  z-index: 190; /* 略低于提醒弹窗(200)，让弹窗始终压在上层 */
  width: 56px;
  height: 56px;
  /* 底部偏移由 JS 直接写 inline bottom（弹窗出现时上移让位），transition 负责平滑过渡。
     注意：本元素不能挂 keyframes 动画，否则运行中的动画会压制 inline bottom 无法定位；
     漂浮动画放到内层 .qq-fab__ava 上。 */
  transition: bottom .34s var(--ease);
}
.qq-fab__link {
  display: block;
  width: 100%;
  height: 100%;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: none;
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s var(--ease);
}
.qq-fab__link:hover { transform: translateY(-3px) scale(1.06); }
.qq-fab__link:hover .qq-fab__ava,
.qq-fab:hover .qq-fab__ava { animation-play-state: paused; }
.qq-fab__link:active { transform: scale(.96); }
.qq-fab__link:focus-visible { outline: 2px solid var(--primary); outline-offset: 4px; }

.qq-fab__ava {
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  overflow: hidden;
  background: #12b7f5; /* QQ 蓝，兼作图片加载前/失败的兜底底色 */
  border: 2.5px solid #fff;
  box-shadow: 0 10px 26px -8px rgba(18, 122, 210, .55), 0 4px 10px -4px rgba(20, 28, 48, .2);
  animation: qqFloat 3.4s ease-in-out infinite;
}
.qq-fab__ava img { width: 100%; height: 100%; object-fit: cover; display: block; }
/* 头像加载失败时，用 QQ 蓝底 + 企鹅字样兜底 */
.qq-fab__ava--fallback::after {
  content: "QQ";
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: #fff;
  font-weight: 800;
  font-size: 18px;
  letter-spacing: .04em;
}

/* 右下角小徽标：一枚对话气泡，暗示「点击可聊天」 */
.qq-fab__badge {
  position: absolute;
  right: -2px;
  bottom: -2px;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #12b7f5;
  color: #fff;
  border: 2px solid #fff;
  box-shadow: 0 2px 6px -1px rgba(18, 122, 210, .5);
}

/* 悬停弹出的二维码卡片：从右下角（头像处）缓缓展开，移开时缓缓收回 */
.qq-fab__card {
  position: absolute;
  right: 0;
  bottom: calc(100% + 14px);
  width: 200px;
  padding: 14px 14px 11px;
  background: #fff;
  border: 1px solid #e4e8f0;
  border-radius: 14px;
  box-shadow: 0 18px 44px -16px rgba(20, 28, 48, .32), 0 6px 16px -8px rgba(20, 28, 48, .18);
  text-align: center;
  transform-origin: bottom right;
  /* 收起态：缩小、透明、不可交互 */
  opacity: 0;
  transform: scale(.6) translateY(10px);
  pointer-events: none;
  transition: opacity .26s var(--ease), transform .26s var(--ease);
}
/* 卡片底部朝向头像的小三角 */
.qq-fab__card::after {
  content: "";
  position: absolute;
  right: 20px;
  bottom: -7px;
  width: 14px;
  height: 14px;
  background: #fff;
  border-right: 1px solid #e4e8f0;
  border-bottom: 1px solid #e4e8f0;
  transform: rotate(45deg);
}
.qq-fab__card-title {
  margin: 0 0 9px;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-1, #1c2438);
}
.qq-fab__qr {
  display: block;
  width: 100%;
  border-radius: 8px;
  background: #f5f7fa;
}
.qq-fab__card-sub {
  margin: 9px 0 0;
  font-size: 11px;
  line-height: 1.5;
  color: var(--text-3, #8a92a6);
}
/* 悬停头像或卡片本身、键盘聚焦、或点击常驻(.qq-fab--pinned)时展开 */
.qq-fab:hover .qq-fab__card,
.qq-fab:focus-within .qq-fab__card,
.qq-fab--pinned .qq-fab__card {
  opacity: 1;
  transform: scale(1) translateY(0);
  pointer-events: auto;
}
@media (prefers-reduced-motion: reduce) {
  .qq-fab__card { transition: opacity .2s linear; transform: none; }
  .qq-fab:hover .qq-fab__card,
  .qq-fab:focus-within .qq-fab__card,
  .qq-fab--pinned .qq-fab__card { transform: none; }
}

@keyframes qqFloat {
  0%, 100% { translate: 0 0; }
  50% { translate: 0 -6px; }
}

@media (prefers-reduced-motion: reduce) {
  .qq-fab { animation: none; }
}

@media (max-width: 560px) {
  .qq-fab { right: 14px; width: 50px; height: 50px; }
  .qq-fab__tip { display: none; }
}

/* ============ 响应式 ============ */
@media (max-width: 1080px) {
  .search { width: 250px; }
}

@media (max-width: 860px) {
  .topbar__inner {
    flex-wrap: wrap;
    padding: 12px 18px 10px;
    gap: 12px;
  }
  .topbar__actions { margin-left: 0; width: 100%; }
  .search { width: 100%; max-width: none; flex: 1 1 auto; }
  .wrap { padding: 14px 18px 36px; }
  .chips { padding: 0 18px 12px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(255px, 1fr)); gap: 13px; }
}

@media (max-width: 560px) {
  body { font-size: 14.5px; }
  .brand__sub { display: none; }
  .grid { grid-template-columns: 1fr; }
  .toasts { bottom: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
  .grid--animate .card,
  .card--category-enter,
  .card--leaving {
    animation-delay: 0ms !important;
    animation-duration: .01ms !important;
    opacity: 1 !important;
    transform: none !important;
  }
}

/* —— 渲染性能优化（不改变视觉）—— */
/* 卡片进入视口时毫秒级悬停提示，降低 GPU 合成开销 */
@media (hover: hover) {
  .card { will-change: transform; }
  .card:not(:hover) { will-change: auto; }
}