:root{color-scheme:dark;--bg:#08131d;--surface:#0e2330;--panel:#102938;--line:#284653;--text:#f3f7f6;--muted:#a8bac0;--teal:#53ddc7;--blue:#27b7ef;--orange:#ff914d}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font:15px/1.45 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}button,input,textarea{font:inherit}button{cursor:pointer;border:1px solid var(--line);background:#153341;color:var(--text);border-radius:10px;padding:.65rem .9rem}button:hover,button:focus-visible{border-color:var(--teal)}.primary{background:var(--teal);color:#08232a;border:0;font-weight:750}.primary:hover{background:#82efdd}.top{height:70px;display:flex;justify-content:space-between;align-items:center;padding:0 22px;border-bottom:1px solid var(--line);background:#0a1c27}.brand{display:flex;gap:11px;align-items:center}.brand strong,.brand small{display:block}.brand small{color:var(--muted);font-size:12px}.mark{display:grid;place-items:center;width:36px;height:36px;border:2px solid var(--teal);border-radius:50%;color:var(--teal);font-weight:900}.mark.large{width:60px;height:60px;font-size:30px}.address{color:var(--muted)}.layout{display:grid;grid-template-columns:200px minmax(260px,340px) minmax(0,1fr);min-height:calc(100vh - 70px)}.sidebar,.list-pane{border-right:1px solid var(--line)}.sidebar{padding:20px 13px}.sidebar .primary{width:100%;padding:13px}.sidebar nav{display:grid;gap:5px;margin-top:22px}.folder{border:0;text-align:left;background:transparent;color:var(--muted)}.folder.active{background:#17453f;color:var(--teal);font-weight:700}.side-note{padding:16px 8px;color:var(--muted);font-size:12px}.list-head{padding:18px 16px 10px;display:flex;align-items:center;justify-content:space-between}.list-head h1{font-size:19px;margin:0}.search{display:block;padding:0 16px 13px}.search input{width:100%;background:#091923;color:var(--text);border:1px solid var(--line);border-radius:9px;padding:10px}.message-list{border-top:1px solid var(--line)}.message-item{display:block;width:100%;border:0;border-bottom:1px solid var(--line);border-radius:0;text-align:left;padding:15px 17px;background:transparent}.message-item:hover,.message-item.selected{background:#173544}.message-item.unread{border-left:3px solid var(--orange)}.message-item strong,.message-item span{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.message-item strong{font-size:14px}.message-item .meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:12px}.message-item .subject{font-size:13px;margin-top:4px}.empty{padding:20px;color:var(--muted)}.more{margin:15px;width:calc(100% - 30px)}.reader{padding:25px;min-width:0}.reader-empty{display:grid;place-items:center;align-content:center;min-height:55vh;color:var(--muted);gap:8px}.reader-head{border-bottom:1px solid var(--line);padding-bottom:16px}.reader-head h2{margin:0 0 15px;font-size:23px;overflow-wrap:anywhere}.actions{display:flex;flex-wrap:wrap;gap:8px}.mail{padding:20px 0;border-bottom:1px solid var(--line)}.mail-head{color:var(--muted);font-size:13px;overflow-wrap:anywhere}.mail-head strong{color:var(--text)}.mail-body{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.6}.mail iframe{width:100%;min-height:300px;border:1px solid var(--line);border-radius:10px;background:white}.mail .html-toggle{font-size:12px;margin-top:8px}.attachment-list{display:flex;gap:8px;flex-wrap:wrap;margin-top:10px}.attachment{border:1px solid var(--line);padding:6px 10px;border-radius:8px;color:var(--muted)}dialog{width:min(680px,calc(100vw - 30px));max-height:calc(100vh - 30px);padding:0;background:var(--panel);color:var(--text);border:1px solid var(--line);border-radius:15px;box-shadow:0 20px 80px #0008}dialog::backdrop{background:#000a}#compose-form{padding:18px;overflow:auto;max-height:calc(100vh - 30px)}.compose-head,.compose-foot{display:flex;justify-content:space-between;align-items:center;gap:10px}.compose-head h2{margin:0 0 10px;font-size:18px}.compose-head button{background:transparent;border:0;font-size:24px}#compose-form label{display:block;color:var(--muted);font-size:13px;margin:8px 0}#compose-form input,#compose-form textarea{display:block;width:100%;margin-top:5px;background:#081c27;color:var(--text);border:1px solid var(--line);padding:10px;border-radius:8px}#compose-form textarea{resize:vertical}.compose-foot{margin-top:16px}#compose-status{color:var(--muted);font-size:13px}#toast{position:fixed;bottom:16px;right:16px;max-width:350px;background:#174039;color:white;padding:12px 15px;border-radius:10px;opacity:0;pointer-events:none;transition:opacity .2s}#toast.show{opacity:1}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}@media(max-width:850px){.layout{grid-template-columns:160px minmax(0,1fr)}.reader{grid-column:2;grid-row:1;border-bottom:1px solid var(--line);min-height:200px}.list-pane{grid-column:2;grid-row:2}.sidebar{grid-row:1/span 2}.reader-empty{min-height:130px}}@media(max-width:600px){.top{height:60px;padding:0 14px}.address{font-size:11px}.layout{display:block}.sidebar{padding:10px;border-bottom:1px solid var(--line)}.sidebar .primary{width:auto}.sidebar nav{display:flex;overflow:auto;margin:8px 0 0;gap:4px}.folder{flex:0 0 auto;font-size:12px;padding:8px}.side-note{display:none}.list-pane{border-right:0}.reader{display:none;padding:16px;min-height:calc(100vh - 60px)}.reader.open{display:block}.layout.reading .sidebar,.layout.reading .list-pane{display:none}}

.mobile-back{display:none;margin-bottom:12px}@media(max-width:600px){.mobile-back{display:block}}
.login-page{min-height:100vh;display:grid;place-items:center;padding:20px;background:radial-gradient(circle at 70% 0%,#123b4b,#08131d 60%)}.login-card{width:min(440px,100%);border:1px solid var(--line);border-radius:18px;background:var(--surface);padding:32px;box-shadow:0 25px 80px #0005}.login-card h1{font-size:27px;margin:30px 0 8px}.login-card p{color:var(--muted)}.login-card form{display:grid;gap:14px;margin-top:24px}.login-card label{display:grid;gap:7px;font-weight:600}.login-card input{width:100%;padding:12px;border:1px solid var(--line);border-radius:9px;color:var(--text);background:var(--bg)}.login-card button{padding:12px}.login-card #login-status{min-height:1.5em;font-size:13px;margin-bottom:0}
.top-right,.compose-buttons{display:flex;align-items:center;gap:10px}.top-right button{font-size:12px;padding:7px 10px}@media(max-width:600px){.compose-foot{align-items:flex-start;flex-direction:column}.compose-buttons{width:100%}.compose-buttons button{flex:1}}