*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:#fff;color:#1a1a1a;
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.5;
  -webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
button{font:inherit}

/* header */
.hd{
  position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);
  backdrop-filter:saturate(180%) blur(12px);-webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid #f0f0f0;
  padding-top:env(safe-area-inset-top);
}
.hd-in{padding:10px 16px 10px}
.brand{display:flex;align-items:center;justify-content:center;margin-bottom:10px}
/* 圆点用伪元素绝对定位，不参与排版 —— 站名才是真正居中 */
.brand-t{position:relative;font-size:15px;font-weight:700;letter-spacing:.2px}
.brand-t::before{content:"";position:absolute;left:-15px;top:50%;transform:translateY(-50%);width:8px;height:8px;border-radius:50%;background:#ff2e4d}

/* search */
.sb{display:flex;align-items:center;background:#f5f5f7;border-radius:12px;padding:0 6px 0 14px;height:44px}
.sb input{
  flex:1;min-width:0;border:0;background:transparent;outline:none;
  font-size:16px;color:#1a1a1a;padding:0;margin:0;
}
.sb input::placeholder{color:#a8a8ad}
.sb input::-webkit-search-cancel-button{-webkit-appearance:none}
.sb button{
  border:0;background:transparent;color:#8b8b90;padding:6px;display:flex;
  align-items:center;justify-content:center;cursor:pointer;border-radius:8px;
}
.sb button:active{background:#e8e8ec}
.sb svg{fill:currentColor}

main{padding-bottom:calc(32px + env(safe-area-inset-bottom))}

/* home */
.home{padding:24px 16px 0}

.groups{display:flex;flex-direction:column;gap:22px}
.grp-t{display:flex;align-items:center;gap:8px;margin:0 0 10px;font-size:13px;color:#8b8b90;font-weight:600}
.grp-t::after{content:"";flex:1;height:1px;background:#f0f0f0}
.chips{display:flex;flex-wrap:wrap;gap:9px}
.chip{
  display:inline-flex;align-items:baseline;gap:5px;
  background:#f6f6f8;border-radius:999px;padding:8px 14px;
  font-size:15px;font-weight:600;color:#1a1a1a;line-height:1.2;
  transition:background .12s;
}
.chip:active{background:#ececf0}
.chip b{font-size:12px;font-weight:500;color:#a8a8ad}

.foot{margin:34px 0 0;color:#b0b0b5;font-size:12px;text-align:center}
.foot b{font-weight:600;color:#8b8b90}

/* results */
.result{padding:0 0 0}
.rhead{padding:14px 16px 6px}
.rsum{margin:0;font-size:13px;color:#8b8b90}
.rsum b{color:#1a1a1a;font-weight:700}

.list{display:flex;flex-direction:column}
.item{
  display:block;padding:13px 16px;border-bottom:1px solid #f4f4f5;
  transition:background .12s;
}
.item:active{background:#fafafa}
.item-m{display:flex;align-items:center;gap:8px;margin-bottom:5px;font-size:12px;color:#a0a0a5}
.item-date{font-variant-numeric:tabular-nums;letter-spacing:.2px}
.item-sep{color:#d8d8dc}
.item-acct{font-weight:600;color:#8b8b90}
.item-like{margin-left:auto;color:#ff2e4d;font-weight:600;white-space:nowrap}
.item-t{font-size:15.5px;line-height:1.5;font-weight:500;color:#1a1a1a;word-break:break-word}
.item-t mark{background:none;color:#ff2e4d;font-weight:700}

.more{padding:20px 16px 8px;text-align:center}
.more button{
  width:100%;max-width:420px;border:1px solid #e8e8ec;background:#fff;color:#1a1a1a;
  font-size:15px;font-weight:600;padding:12px;border-radius:12px;cursor:pointer;
}
.more button:active{background:#fafafa}

.empty{padding:56px 24px;text-align:center;color:#a8a8ad;font-size:14px}

@media (min-width:640px){
  .hd-in{max-width:720px;margin:0 auto;padding:12px 20px}
  .home,.result{max-width:720px;margin:0 auto}
  .home{padding:36px 20px 0}
  .hero{font-size:34px}
  .item{padding:15px 20px;border-radius:0}
  .rhead{padding:18px 20px 8px}
}