:root{
  --bg:#FFFFFF; --card:#F2F2F4; --fg:#1C1C1E; --muted:#636366; --faint:#8A8A8E;
  --pill:#FFFFFF; --picked:#D6E6FB; --shadow:0 2px 12px rgba(0,0,0,.08); --bar-shadow:0 4px 24px rgba(0,0,0,.10);
  --boost:#FFF3D1; --boost-fg:#8A5A00; --ok-bg:#E4F4E8; --ok-fg:#1E7A3A;
  --good:#34A853; --meh:#E0A100; --bad:#C0582B; --new:#B0B0B5; --send:#1C1C1E; --send-fg:#FFFFFF; --off:#E5E5EA;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#000000; --card:#1C1C1E; --fg:#F2F2F7; --muted:#AEAEB2; --faint:#8E8E93;
    --pill:#2C2C2E; --picked:#1F3A5F; --shadow:0 2px 12px rgba(0,0,0,.6); --bar-shadow:0 4px 24px rgba(0,0,0,.7);
    --boost:#3A2E10; --boost-fg:#F2C94C; --ok-bg:#16301F; --ok-fg:#7FD69A;
    --new:#636366; --send:#F2F2F7; --send-fg:#000000; --off:#3A3A3C;
  }
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--fg);font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;-webkit-font-smoothing:antialiased}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:none}
a{color:inherit}

.top{position:sticky;top:0;z-index:5;display:flex;justify-content:space-between;align-items:center;gap:12px;padding:16px 24px;background:linear-gradient(var(--bg) 70%,transparent)}
.chip{height:48px;padding:0 20px;display:inline-flex;align-items:center;gap:10px;background:var(--pill);border-radius:24px;box-shadow:var(--shadow);font-size:17px;font-weight:600;letter-spacing:-.01em}
.chip small{display:block;font-weight:400;font-size:13px;color:var(--muted);margin-top:-2px}
.chip.lang{height:40px;padding:0 16px;font-size:15px;font-weight:500;box-shadow:none;background:transparent;color:var(--muted)}
.chip.lang:hover{background:var(--card)}

main{position:relative;z-index:1;max-width:800px;margin:0 auto;padding:8px 16px 180px}

.head{display:flex;flex-direction:column;align-items:flex-start;gap:16px;margin-bottom:20px}
h1{margin:0;font-size:28px;font-weight:600}
.sub{margin-top:4px;font-size:15px;color:var(--muted);display:flex;align-items:center;gap:8px}

/* ---- system + sort tabs: one row, horizontally scrollable when crowded ---- */
/* tabbar holds the system tabs and the sort tabs. System tabs scroll
   horizontally when crowded; the sort group stays pinned and scrolls inside. */
.tabbar{position:sticky;top:0;z-index:4;display:flex;gap:8px;align-items:center;padding:8px 0;background:linear-gradient(var(--bg) 75%,transparent)}
.sysrow{flex:1;min-width:0;display:flex;gap:8px;overflow-x:auto;scrollbar-width:none}
/* [hidden] from the UA sheet loses to the display rule above, so restate it */
.sysrow[hidden]{display:none}
.sysrow::-webkit-scrollbar{display:none}
.seg{display:flex;gap:2px;padding:4px;background:var(--card);border-radius:22px;flex-shrink:0}
.seg.sys{gap:4px}
.seg button{height:40px;padding:0 18px;border-radius:20px;background:transparent;font-size:15px;white-space:nowrap;color:var(--fg)}
.seg button[aria-selected=true]{background:var(--pill);box-shadow:0 1px 4px rgba(0,0,0,.08);font-weight:500}

.list{display:flex;flex-direction:column;gap:12px}
.card{padding:20px 20px 20px 28px;background:var(--card);border-radius:24px;display:flex;align-items:center;gap:16px}
.card .info{flex:1;min-width:0;display:flex;flex-direction:column;gap:6px}
.row{display:flex;align-items:center;gap:12px}
.code{font-size:26px;font-weight:500;letter-spacing:.08em;font-variant-numeric:tabular-nums;word-break:break-all}
.card.dead .code{color:var(--faint);text-decoration:line-through}
.card.pinned{background:var(--picked)}
.card.pinned .copy{background:var(--send);color:var(--send-fg)}
.status{display:flex;align-items:center;gap:8px;font-size:15px;flex-wrap:wrap}
.status .meta{color:var(--muted)}
.dot{width:10px;height:10px;border-radius:5px;flex-shrink:0}
.copy{height:36px;padding:0 14px;display:inline-flex;align-items:center;gap:6px;background:var(--pill);border-radius:18px;font-size:14px}
.votes{display:flex;gap:8px;flex-shrink:0}
.vote{height:44px;padding:0 16px;display:inline-flex;align-items:center;gap:6px;background:var(--pill);border-radius:22px;font-size:15px;white-space:nowrap}
.vote[aria-pressed=true]{background:var(--picked)}
.vote:disabled{opacity:.45;cursor:default}

.label{padding:6px 4px 0;font-size:14px;color:var(--muted)}
.empty{padding:48px 24px;text-align:center;color:var(--muted);background:var(--card);border-radius:24px;line-height:1.7}
.rules{padding:16px 8px 0}
.rules h2{margin:20px 0 8px;font-size:16px;font-weight:600}
.rules h2:first-child{margin-top:0}
.rules ol{margin:0;padding-left:22px;display:flex;flex-direction:column;gap:6px;font-size:15px;line-height:1.65;color:var(--muted)}
.rules .fine{margin:20px 0 0;font-size:13px;color:var(--faint)}
.stats{margin-top:8px;padding:16px;background:var(--card);border-radius:24px}
.stats table{width:100%;border-collapse:collapse;font-size:15px}
.stats td{padding:6px 0;border-bottom:1px solid var(--card)}
.stats td:last-child{text-align:right;font-variant-numeric:tabular-nums;color:var(--muted)}
.code-sm{font-weight:600;letter-spacing:.08em;font-variant-numeric:tabular-nums}
.meta{font-size:14px;color:var(--muted)}

/* ---- "your codes" block, rendered inline above the list ---- */
.own{padding:16px 24px;background:var(--card);border-radius:24px;display:flex;flex-direction:column;gap:8px}
.own + .own{margin-top:-4px}
.own-t{font-size:15px;font-weight:600}
.own-r{display:flex;gap:12px;align-items:baseline;flex-wrap:wrap;font-size:15px}
.own-close{margin-left:auto;height:32px;padding:0 12px;border-radius:16px;background:var(--off);color:var(--muted);font-size:13px;white-space:nowrap}
.own-close.armed{background:var(--bad);color:#FFFFFF}
.boost-btn{height:34px;padding:0 14px;flex-shrink:0;display:inline-flex;align-items:center;gap:6px;border-radius:17px;background:var(--boost);color:var(--boost-fg);font-size:14px;font-weight:600}

/* ---- composer: always-visible bottom bar, inherits the selected tab's system ---- */
.composer{position:fixed;z-index:6;left:0;right:0;bottom:0;padding:0 16px calc(24px + env(safe-area-inset-bottom));pointer-events:none}
.composer form{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:8px;pointer-events:auto}
.hint{min-height:20px;padding-left:24px;font-size:14px;color:var(--muted)}
.bar{height:64px;padding:0 10px 0 24px;display:flex;align-items:center;gap:14px;background:var(--pill);border-radius:32px;box-shadow:var(--bar-shadow)}
.bar input{flex:1;min-width:0;height:44px;border:none;outline:none;background:transparent;font-size:17px;letter-spacing:.04em}
.bar input::placeholder{color:var(--faint);letter-spacing:0}
.send{width:44px;height:44px;flex-shrink:0;display:flex;align-items:center;justify-content:center;border-radius:22px;background:var(--off);color:var(--faint)}
.send.ready{background:var(--send);color:var(--send-fg)}

.toast{position:fixed;left:50%;top:80px;transform:translate(-50%,-8px);opacity:0;transition:.2s;z-index:10;padding:12px 20px;background:var(--fg);color:var(--bg);border-radius:22px;font-size:15px;pointer-events:none;max-width:calc(100% - 32px)}
.toast.on{opacity:1;transform:translate(-50%,0)}

@media (max-width:640px){
  .top{padding:16px}
  .chip{height:44px;padding:0 16px;font-size:16px}
  main{padding-top:0}
  h1{font-size:24px}
  .tabbar{padding:6px 0}
  .seg button{padding:0 14px;font-size:14px}
  .card{flex-direction:column;align-items:stretch;padding:18px;gap:12px;border-radius:22px}
  .code{font-size:22px}
  .status{font-size:13px}
  .votes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
  .vote{justify-content:center}
  .composer{padding:0 12px calc(16px + env(safe-area-inset-bottom))}
  .bar{height:56px;padding:0 6px 0 20px;gap:12px}
}