:root{--bg:#f7f7f5;--surface:#fff;--text:#1d2125;--muted:#5c6670;--line:#d9dcdf;--accent:#1f5f7a;--accent-text:#fff;--danger:#a32020;--ok-bg:#e7f4ea;--ok-text:#1c5a2d;--warn-bg:#fdf3dc;--warn-text:#6a4b00;--err-bg:#fbe7e7;--err-text:#8a1c1c;color-scheme:light}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#15181b;--surface:#1e2226;--text:#e8eaec;--muted:#a0a8b0;--line:#363c42;--accent:#6fb5d4;--accent-text:#0d1417;--danger:#ef8c8c;--ok-bg:#1c3324;--ok-text:#a4dfb4;--warn-bg:#3a2f12;--warn-text:#f2d794;--err-bg:#3d1d1d;--err-text:#f5b5b5;color-scheme:dark}}
:root[data-theme=dark]{--bg:#15181b;--surface:#1e2226;--text:#e8eaec;--muted:#a0a8b0;--line:#363c42;--accent:#6fb5d4;--accent-text:#0d1417;--danger:#ef8c8c;--ok-bg:#1c3324;--ok-text:#a4dfb4;--warn-bg:#3a2f12;--warn-text:#f2d794;--err-bg:#3d1d1d;--err-text:#f5b5b5;color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent)}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:var(--surface);padding:8px;z-index:10}
.top{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;padding:10px 16px;background:var(--surface);border-bottom:1px solid var(--line)}
.brand{font-weight:700;text-decoration:none;color:var(--text);font-size:18px}
.top nav{display:flex;flex-wrap:wrap;gap:4px 14px;align-items:center;flex:1}
.top nav a{text-decoration:none;padding:4px 2px}.top nav a.on{font-weight:600;border-bottom:2px solid var(--accent)}
.nav-toggle{display:none}
.theme{background:none;border:1px solid var(--line);color:var(--text);border-radius:6px;min-width:36px;min-height:36px;cursor:pointer}
main{max-width:1000px;margin:0 auto;padding:20px 16px 48px}
main:focus{outline:none}
h1{font-size:26px;line-height:1.25;margin:8px 0 16px}h2{font-size:19px;margin:28px 0 10px}h3{font-size:16px;margin:0 0 6px}
.foot{display:flex;flex-wrap:wrap;gap:14px;padding:16px;justify-content:center;border-top:1px solid var(--line);font-size:14px}
.narrow{max-width:420px;margin:0 auto}
.stack{display:flex;flex-direction:column;gap:12px;max-width:640px;margin:12px 0}
.row{display:flex;gap:10px;align-items:center}.wrap{flex-wrap:wrap}.between{justify-content:space-between}.grow{flex:1;min-width:0}
.inline{display:inline}.indent{margin-left:24px}
.actions{margin:14px 0}
label{display:block;font-weight:500}
label.check{font-weight:400;display:flex;gap:8px;align-items:flex-start}
input:not([type=checkbox]):not([type=color]):not([type=file]),select,textarea{display:block;width:100%;margin-top:4px;padding:9px 10px;font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:6px}
input[type=checkbox]{margin-top:5px;width:18px;height:18px}
fieldset{border:1px solid var(--line);border-radius:8px;padding:10px 14px}legend{font-weight:600;padding:0 6px}
.btn{display:inline-block;padding:8px 14px;min-height:40px;font:inherit;font-weight:500;color:var(--text);background:var(--surface);border:1px solid var(--line);border-radius:6px;text-decoration:none;cursor:pointer}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}
.btn.danger{color:var(--danger);border-color:var(--danger)}
.btn[disabled]{opacity:.6;cursor:progress}
.link{background:none;border:0;color:var(--accent);font:inherit;text-decoration:underline;cursor:pointer;padding:4px 2px}
.alert{padding:10px 14px;border-radius:8px;margin:12px 0}.alert ul{margin:0;padding-left:18px}.alert p{margin:4px 0}
.alert.ok{background:var(--ok-bg);color:var(--ok-text)}.alert.warn{background:var(--warn-bg);color:var(--warn-text)}.alert.err{background:var(--err-bg);color:var(--err-text)}
.err-text{color:var(--err-text)}
.muted{color:var(--muted)}.small{font-size:14px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin:8px 0}
.grid3{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px}
.grid2{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:10px}
.stat{text-decoration:none;color:var(--text);margin:0}.stat strong{display:block;font-size:26px}
.hero{padding:16px 0}.hero h1{font-size:32px}
.empty{padding:28px;text-align:center;border:1px dashed var(--line);border-radius:8px;color:var(--muted)}
.mailbox{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.dot{width:12px;height:12px;border-radius:50%;background:var(--accent);flex:none}
.table-wrap{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:15px}th,td{text-align:left;padding:8px;border-bottom:1px solid var(--line);vertical-align:top}th{font-weight:600}
.badge{display:inline-block;padding:2px 8px;border-radius:12px;font-size:13px;font-weight:600;background:var(--line);color:var(--text)}
.state-uncertain,.state-pending_approval,.check-warning{background:var(--warn-bg);color:var(--warn-text)}
.state-smtp_accepted,.check-ok{background:var(--ok-bg);color:var(--ok-text)}
.state-failed,.check-error{background:var(--err-bg);color:var(--err-text)}
.messages{list-style:none;padding:0;margin:0;background:var(--surface);border:1px solid var(--line);border-radius:8px}
.messages li+li{border-top:1px solid var(--line)}
.messages a{display:grid;grid-template-columns:200px 1fr auto;gap:10px;padding:10px 14px;text-decoration:none;color:var(--text)}
.messages .from,.messages .subject{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.messages .meta{font-size:13px;color:var(--muted)}.messages .unread .from,.messages .unread .subject{font-weight:700}
.search{align-items:flex-end;margin-bottom:6px}
.meta-list{display:grid;grid-template-columns:max-content 1fr;gap:4px 12px;margin:10px 0}.meta-list dt{font-weight:600}.meta-list dd{margin:0;overflow-wrap:anywhere}
.body{white-space:pre-wrap;overflow-wrap:anywhere;background:var(--surface);border:1px solid var(--line);border-radius:8px;padding:14px;font:15px/1.5 system-ui,sans-serif}
.html{width:100%;height:480px;border:1px solid var(--line);border-radius:8px;background:#fff}
code{font-family:ui-monospace,Consolas,monospace;font-size:.92em}.break{word-break:break-all}
.codes{columns:2;list-style:none;padding:0}.qr svg{max-width:220px;height:auto;background:#fff;padding:8px}
.prose{max-width:720px}
.shortcuts{position:fixed;right:16px;bottom:16px;z-index:5;max-width:280px}.shortcuts ul{margin:6px 0 0;padding-left:0;list-style:none;font-size:14px}
kbd{font:12px ui-monospace,Consolas,monospace;border:1px solid var(--line);border-radius:4px;padding:1px 5px;background:var(--bg)}
[hidden]{display:none!important}
@media (max-width:640px){
  .nav-toggle{display:block;margin-left:auto;background:none;border:1px solid var(--line);color:var(--text);padding:6px 10px;border-radius:6px}
  .top nav#nav{display:none;flex-basis:100%;flex-direction:column;align-items:flex-start}.top nav#nav.open{display:flex}
  .messages a{grid-template-columns:1fr}.hero h1{font-size:26px}
}