:root {
  --bg: #f5f6f8; --card: #ffffff; --ink: #14181f; --muted: #5b6573; --line: #d9dde3;
  --accent: #14181f; --accent-ink: #ffffff; --danger: #b42318; --warn-bg: #fff4e5; --warn-ink: #8a4b00;
  --pill: #eef0f3; --link: #1d4ed8; --tap: 52px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0f1216; --card: #181c22; --ink: #e8ebef; --muted: #9aa4b1; --line: #2a3038;
    --accent: #e8ebef; --accent-ink: #0f1216; --danger: #f97066; --warn-bg: #3a2a12; --warn-ink: #fdc77a;
    --pill: #232931; --link: #8ab4ff; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 17px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
a { color: var(--link); }
.wrap { max-width: 1100px; margin: 0 auto; padding: 12px 16px calc(96px + env(safe-area-inset-bottom)); }
.top { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; justify-content: space-between;
  gap: 12px; padding: 10px 16px; padding-top: calc(10px + env(safe-area-inset-top));
  background: var(--card); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; color: var(--ink); text-decoration: none; font-size: 18px; }
.topnav { display: flex; gap: 4px; align-items: center; }
.topnav a, .linkbtn { display: inline-flex; align-items: center; min-height: 44px; padding: 0 10px;
  color: var(--muted); text-decoration: none; font-size: 15px; }
.topnav form { margin: 0; }
.linkbtn { background: none; border: 0; font: inherit; font-size: 15px; cursor: pointer; }
.banner { background: var(--pill); padding: 10px 14px; border-radius: 10px; font-size: 15px; margin: 0 0 10px; }
.banner.warn, .warn { background: var(--warn-bg); color: var(--warn-ink); }
.tabs, .chips { display: flex; gap: 8px; overflow-x: auto; padding: 4px 0 10px; scrollbar-width: none; }
.tab, .chip { flex: none; display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 0 14px;
  border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  text-decoration: none; font-size: 15px; }
.tab.on, .chip.on { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
.n { font-variant-numeric: tabular-nums; opacity: .75; font-size: 13px; }
.list { list-style: none; margin: 0; padding: 0; }
.list li { margin: 0 0 10px; }
.item { display: block; padding: 14px 16px; background: var(--card); border: 1px solid var(--line);
  border-radius: 14px; color: var(--ink); text-decoration: none; }
.meta { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 13px; color: var(--muted); }
.mb { text-transform: uppercase; letter-spacing: .05em; font-weight: 600; }
.when { margin-left: auto; }
.pill { background: var(--pill); border-radius: 999px; padding: 2px 8px; font-size: 12px; }
.pill.bad { color: var(--danger); }
.subj { font-weight: 600; font-size: 17px; margin: 4px 0 2px; overflow-wrap: anywhere; }
.from { font-size: 15px; color: var(--muted); overflow-wrap: anywhere; }
.snip { font-size: 14px; color: var(--muted); margin-top: 6px; overflow-wrap: anywhere; }
.empty { color: var(--muted); padding: 20px 0; }
.back { margin: 4px 0 8px; }
.back a { display: inline-flex; min-height: 44px; align-items: center; text-decoration: none; }
.h { font-size: 22px; margin: 0 0 4px; overflow-wrap: anywhere; }
.sub { color: var(--muted); font-size: 14px; margin: 0 0 12px; }
.split { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; align-items: start; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 14px 16px; }
.card h2 { font-size: 16px; margin: 0 0 10px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.card h3 { font-size: 15px; margin: 14px 0 6px; }
.hdrs { display: grid; grid-template-columns: auto 1fr; gap: 2px 10px; font-size: 14px; margin: 0 0 10px; }
.hdrs dt { color: var(--muted); }
.hdrs dd { margin: 0; overflow-wrap: anywhere; }
pre.body { white-space: pre-wrap; overflow-wrap: anywhere; font: 16px/1.5 inherit; font-family: inherit; margin: 0; }
.atts { padding-left: 18px; font-size: 14px; }
.atts a { display: inline-block; min-height: 32px; }
details.thread { margin-top: 12px; }
details.thread summary { min-height: 44px; display: flex; align-items: center; cursor: pointer; color: var(--link); }
.tmsg { border-top: 1px solid var(--line); padding: 10px 0; }
.tmsg.out { opacity: .85; }
.notes { background: var(--pill); border-radius: 10px; padding: 10px 12px; font-size: 15px; }
.cites { font-size: 14px; }
textarea, input { width: 100%; font: inherit; font-size: 16px; color: var(--ink); background: var(--bg);
  border: 1px solid var(--line); border-radius: 10px; padding: 12px; }
input { min-height: var(--tap); }
label { display: block; font-size: 14px; color: var(--muted); margin: 0 0 12px; }
label input, label textarea { margin-top: 6px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.sig { font-size: 14px; color: var(--muted); }
.sig span { color: var(--ink); white-space: pre-line; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: var(--tap); padding: 0 18px;
  border-radius: 12px; border: 1px solid var(--line); background: var(--card); color: var(--ink);
  font: inherit; font-weight: 600; cursor: pointer; touch-action: manipulation; }
.btn.block { width: 100%; }
.btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-size: 18px; }
.btn.danger { color: var(--danger); }
.row, .stack { margin-top: 12px; }
.snooze { display: flex; gap: 8px; align-items: center; margin-top: 12px; flex-wrap: wrap; }
.snooze span { color: var(--muted); font-size: 14px; margin-right: 4px; }
.snooze .btn { flex: 1; min-width: 72px; }
.sticky { position: sticky; bottom: 0; padding: 10px 0 calc(10px + env(safe-area-inset-bottom));
  background: linear-gradient(to top, var(--card) 75%, transparent); }
.login { max-width: 420px; margin: 10vh auto 0; }
.login h1 { font-size: 22px; margin: 0 0 16px; }
.error { color: var(--danger); }
.log { list-style: none; padding: 0; font-size: 14px; }
.log li { padding: 10px 0; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.log code { font-size: 12px; color: var(--muted); }