:root{--bg:#f4f6f8;--card:#fff;--fg:#1f2328;--muted:#6b7280;--line:#e2e6ea;--accent:#1e5aa8;--accent2:#e8f0fb;--danger:#b42318;--warn:#fff4e5}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--fg);font:14px/1.45 -apple-system,"Segoe UI",Roboto,sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
header.top{background:#fff;border-bottom:1px solid var(--line);padding:10px 20px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
header.top .brand{font-weight:600;font-size:16px}header.top .brand small{color:var(--muted);font-weight:400;margin-left:8px}
header.top .sp{flex:1}header.top nav a{margin-left:14px}header.top .lang a{margin-left:6px;color:var(--muted)}header.top .lang a.on{color:var(--fg);font-weight:600}
main{max-width:1200px;margin:20px auto;padding:0 16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:16px 20px;margin-bottom:16px}
.login{max-width:380px;margin:60px auto}.login h1{font-size:18px;margin:0 0 12px}
label{display:block;font-size:12px;color:var(--muted);margin:10px 0 4px}
input[type=text],input[type=password],input[type=number],input[type=search]{width:100%;padding:8px 10px;border:1px solid #c9d1d9;border-radius:6px;font:inherit}
button,.btn{display:inline-block;background:var(--accent);color:#fff;border:0;border-radius:6px;padding:8px 14px;font:inherit;cursor:pointer;text-decoration:none}
button.secondary,.btn.secondary{background:#fff;color:var(--fg);border:1px solid #c9d1d9}button.danger{background:var(--danger)}
.msg{padding:8px 12px;border-radius:6px;margin:8px 0}.msg.err{background:#fde8e8;color:var(--danger)}.msg.ok{background:#e6f6ea;color:#166534}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:10px}.toolbar form{display:flex;gap:6px;flex:1;min-width:240px}
.tabs a{padding:6px 10px;border-radius:6px}.tabs a.on{background:var(--accent2);color:var(--accent);font-weight:600}
table.list{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:8px;overflow:hidden}
table.list th,table.list td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}table.list th{background:#fafbfc;font-size:12px;color:var(--muted)}
table.list tr.unread td{font-weight:600}table.list tr:hover td{background:#f7f9fc}table.list td.nowrap{white-space:nowrap}table.list td.muted{color:var(--muted)}
.badge{display:inline-block;font-size:11px;padding:1px 6px;border-radius:10px;background:#eef1f4;color:#374151;margin-left:6px}.badge.spam{background:#fde8e8;color:var(--danger)}.badge.att{background:#eef1f4}
.pager{display:flex;gap:12px;align-items:center;margin:12px 0;color:var(--muted)}
.view h1{font-size:18px;margin:0 0 10px}.meta{color:var(--muted);font-size:13px}.meta b{color:var(--fg);font-weight:600}.meta div{margin:2px 0}
iframe.body{width:100%;min-height:480px;border:1px solid var(--line);border-radius:6px;background:#fff}
pre.text{white-space:pre-wrap;word-break:break-word;background:#fafbfc;border:1px solid var(--line);border-radius:6px;padding:12px;font:13px/1.5 Consolas,monospace}
ul.att{list-style:none;padding:0;margin:8px 0}ul.att li{margin:4px 0}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:12px 0}
details summary{cursor:pointer;color:var(--accent)}
.kv td{padding:3px 8px 3px 0;vertical-align:top;font-size:13px}.kv td:first-child{color:var(--muted);white-space:nowrap}
@media (max-width:720px){table.list .hide-m{display:none}main{padding:0 8px}header.top{padding:10px 12px}}