:root{--bg:#f5f6f8;--card:#fff;--fg:#1c2230;--muted:#6a7387;--line:#e3e6ee;--accent:#2f6df6;--warn:#d9480f}
@media (prefers-color-scheme:dark){:root{--bg:#10131a;--card:#181c26;--fg:#e6e9f0;--muted:#8d96ab;--line:#272d3b;--accent:#6d9bff;--warn:#ff8a5c}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}
header,main{max-width:980px;margin:0 auto;padding:0 16px}
header{padding-top:28px}
h1{margin:0;font-size:1.5rem}
.sub{margin:.25rem 0 1.25rem;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:16px}
.addr-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
#addr{flex:1;min-width:200px;font-size:1.15rem;font-weight:600;word-break:break-all}
button{font:inherit;border:0;border-radius:8px;padding:8px 14px;background:var(--accent);color:#fff;cursor:pointer}
button.ghost{background:transparent;color:var(--accent);border:1px solid var(--line)}
button:hover{filter:brightness(1.08)}
.timer-row{display:flex;gap:12px;align-items:baseline;margin-top:12px}
.timer{font-variant-numeric:tabular-nums;font-size:1.6rem;font-weight:700}
.timer.low{color:var(--warn)}
.muted{color:var(--muted)}.center{text-align:center}
.bar{height:4px;background:var(--line);border-radius:4px;margin-top:10px;overflow:hidden}
#bar-fill{height:100%;width:100%;background:var(--accent);transition:width 1s linear}
.notice{border-color:var(--warn);display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}
[hidden]{display:none!important}
.welcome h2{margin:0 0 8px}
.welcome p{margin:8px 0}
.welcome code{background:var(--bg);padding:4px 8px;border-radius:6px;word-break:break-all}
.small{font-size:.85rem}
.name-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:12px}
.name-form input{font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);min-width:220px}
a.btn{display:inline-block;font:inherit;border-radius:8px;padding:8px 14px;background:var(--accent);color:#fff;text-decoration:none;cursor:pointer}
a.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--line)}
.notice-actions{display:flex;gap:8px;flex-wrap:wrap}
.open-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-top:14px;padding-top:12px;border-top:1px solid var(--line)}
.open-form input{font:inherit;padding:7px 10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--fg);min-width:200px}
code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
h1 a{color:inherit;text-decoration:none}
h1 a:hover{color:var(--accent)}
.boxes{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.chip{display:inline-flex;align-items:stretch;border:1px solid var(--line);border-radius:999px;background:var(--card);overflow:hidden}
.chip.cur{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.chip a.chip-go{color:var(--fg);text-decoration:none;padding:6px 12px;font-size:.85rem;font-variant-numeric:tabular-nums}
.chip a.chip-go:hover{background:color-mix(in srgb,var(--accent) 14%,transparent)}
.chip button{background:transparent;color:var(--fg);border-radius:0;padding:6px 12px;font-size:.85rem;font-variant-numeric:tabular-nums}
.chip button.chip-x{padding:6px 10px;color:var(--muted);border-left:1px solid var(--line)}
.chip button:hover{background:color-mix(in srgb,var(--accent) 14%,transparent);filter:none}
.mail{display:grid;grid-template-columns:320px 1fr;gap:16px;align-items:start}
.mail .card{margin:0}
.list{list-style:none;padding:0;overflow:hidden;min-height:60px}
.list li{padding:12px 14px;border-bottom:1px solid var(--line);cursor:pointer}
.list li:last-child{border-bottom:0}
.list li:hover,.list li.sel{background:color-mix(in srgb,var(--accent) 12%,transparent)}
.list .from{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.list .subj{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.list .meta{font-size:.8rem;color:var(--muted)}
.list .empty{cursor:default;color:var(--muted);text-align:center}
.view h2{margin:0 0 6px;font-size:1.15rem}
.view .hdr{color:var(--muted);font-size:.85rem;margin-bottom:12px;word-break:break-word}
.view iframe{width:100%;min-height:340px;border:1px solid var(--line);border-radius:8px;background:#fff}
.view pre.text{white-space:pre-wrap;word-break:break-word;margin:0;font:inherit}
.atts{margin:12px 0 0;padding:0;list-style:none;display:flex;gap:8px;flex-wrap:wrap}
.atts a{display:inline-block;padding:6px 10px;border:1px solid var(--line);border-radius:8px;color:var(--accent);text-decoration:none;font-size:.85rem}
.actions{margin-top:12px;font-size:.85rem}
.actions a{color:var(--accent)}
.api summary{cursor:pointer;font-weight:600}
.api pre{overflow:auto;background:var(--bg);padding:12px;border-radius:8px;font-size:.8rem;margin:12px 0 0}
@media (max-width:760px){.mail{grid-template-columns:1fr}}