/* ── Reset & Base ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f5f5f7;
  --surface:#fff;
  --text:#1d1d1f;
  --text-secondary:#86868b;
  --accent:#0071e3;
  --accent-bg:#e8f0fe;
  --border:#e5e5ea;
  --radius:14px;
  --radius-sm:10px;
  --card-shadow:0 1px 4px rgba(0,0,0,.04),0 2px 8px rgba(0,0,0,.06);
  --max-w:680px;
  --header-h:auto
}
html{font-size:16px;-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.5;
  min-height:100vh;
  padding-bottom:60px
}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* ── Header ── */
.header{
  background:rgba(255,255,255,.85);
  backdrop-filter:blur(16px);
  -webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:100
}
.header-inner{max-width:var(--max-w);margin:0 auto;padding:12px 16px 0}
.header-row{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.site-logo{font-size:1.25rem;font-weight:800;color:var(--text);letter-spacing:-.03em}
.site-logo:hover{text-decoration:none}
.today-badge{font-size:.72rem;color:var(--text-secondary);background:var(--bg);padding:4px 12px;border-radius:14px}

/* ── Tabs ── */
.tabs{display:flex;gap:0;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tab{
  flex-shrink:0;
  padding:8px 14px;
  border:none;
  background:transparent;
  font-size:.85rem;
  font-weight:500;
  color:var(--text-secondary);
  cursor:pointer;
  border-bottom:2px solid transparent;
  transition:all .2s;
  -webkit-tap-highlight-color:transparent;
  white-space:nowrap
}
.tab:active{opacity:.7}
.tab.active{color:var(--accent);border-bottom-color:var(--accent)}

/* ── Hero Bar ── */
.hero-bar{
  max-width:var(--max-w);
  margin:16px auto 0;
  padding:0 16px;
  display:flex;
  align-items:baseline;
  gap:10px
}
.hero-bar span{font-size:1rem;font-weight:600}
.hero-bar small{font-size:.75rem;color:var(--text-secondary)}

/* ── Featured Card ── */
.featured{
  max-width:var(--max-w);
  margin:8px auto 0;
  padding:0 16px
}
.featured-item{
  display:block;
  background:linear-gradient(135deg,#f0f4ff,#e8f0fe);
  border-radius:var(--radius);
  padding:16px;
  position:relative;
  overflow:hidden
}
.featured-item:hover{text-decoration:none}
.featured-emoji{font-size:1.6rem;margin-bottom:6px}
.featured-item h3{font-size:.95rem;font-weight:600;line-height:1.35;margin-bottom:4px;color:var(--text)}
.featured-item p{font-size:.8rem;color:var(--text-secondary);line-height:1.5}
.featured-link{font-size:.75rem;color:var(--accent);margin-top:6px;display:block}

/* ── Section Title ── */
.section-title{
  max-width:var(--max-w);
  margin:16px auto 8px;
  padding:0 16px;
  display:flex;
  align-items:center;
  justify-content:space-between
}
.section-title span{font-size:.88rem;font-weight:600}
.section-title .count{font-size:.72rem;color:var(--text-secondary);font-weight:400;background:var(--surface);padding:2px 10px;border-radius:10px}

/* ── Card List ── */
.card-list{
  max-width:var(--max-w);
  margin:0 auto;
  padding:0 16px;
  display:flex;
  flex-direction:column;
  gap:10px
}

/* ── Card ── */
.card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  cursor:pointer;
  transition:all .2s;
  box-shadow:var(--card-shadow);
  -webkit-tap-highlight-color:transparent
}
.card:active{opacity:.85;transform:scale(.98)}

.card-top{
  display:flex;
  align-items:flex-start;
  gap:12px;
  padding:14px
}
.card-emoji{
  width:36px;height:36px;
  border-radius:10px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:1rem;
  flex-shrink:0
}
.card-emoji.blue{background:#e8f0fe;color:#0071e3}
.card-emoji.orange{background:#fef3c7;color:#d97706}
.card-emoji.green{background:#e6f7e6;color:#059669}
.card-emoji.pink{background:#fce7f3;color:#db2777}
.card-emoji.purple{background:#ede9fe;color:#7c3aed}
.card-emoji.teal{background:#ccfbf1;color:#0d9488}
.card-emoji.red{background:#fee2e2;color:#dc2626}
.card-emoji.gray{background:#f3f4f6;color:#6b7280}
.card-emoji.yellow{background:#fef9c3;color:#ca8a04}

.card-info{flex:1;min-width:0}
.card-info h4{font-size:.88rem;font-weight:600;line-height:1.35}
.card-info .meta{font-size:.72rem;color:var(--text-secondary);margin-top:4px;display:flex;gap:4px;flex-wrap:wrap}
.card-info .preview{font-size:.78rem;color:var(--text-secondary);margin-top:5px;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-expand{max-height:0;overflow:hidden;transition:all .3s ease}
.card.open .card-expand{max-height:1000px}
.card-expand-inner{
  padding:0 14px 14px;
  border-top:1px solid var(--border);
  padding-top:10px
}
.card-expand-inner p{font-size:.8rem;line-height:1.6;color:var(--text-secondary);margin-bottom:8px}
.card-expand-inner .tag{
  display:inline-block;
  font-size:.68rem;
  background:var(--accent-bg);
  color:var(--accent);
  padding:2px 10px;
  border-radius:10px;
  margin:1px 3px
}
.card-link{font-size:.75rem;margin-top:6px;display:inline-block}

/* ── Tab Sections ── */
.tab-section{display:none}
.tab-section.active{display:block}

/* ── Loading ── */
.loading-toast{
  position:fixed;
  bottom:20px;
  left:50%;
  transform:translateX(-50%);
  background:rgba(0,0,0,.75);
  color:#fff;
  padding:8px 20px;
  border-radius:20px;
  font-size:.8rem;
  z-index:999;
  opacity:0;
  transition:opacity .3s;
  pointer-events:none
}
.loading-toast.show{opacity:1}

/* ── Footer ── */
.footer{
  text-align:center;
  padding:24px 16px;
  font-size:.72rem;
  color:var(--text-secondary);
  max-width:var(--max-w);
  margin:0 auto
}

/* ── Empty State ── */
.empty-state{
  grid-column:1/-1;
  text-align:center;
  padding:40px 20px;
  color:var(--text-secondary);
  font-size:.88rem
}

/* ── Tablet+ ── */
@media(min-width:768px){
  .card-list{flex-direction:row;flex-wrap:wrap}
  .card{flex:1 1 calc(50% - 5px);min-width:280px}
  .featured-item{padding:24px}
  .card-top{padding:16px}
}