:root{--bg:#fefaf1;--panel:#fff;--ink:#1b204d;--muted:#6b6f8f;--line:#e6e3f2;--brand:#5a6ccf;--brand-ink:#fff;--brown:#1b204d;--accent:#faae45;--unread:#eef0fb;--danger:#c2412d}@media (prefers-color-scheme:dark){:root{--bg:#12142b;--panel:#1b204d;--ink:#f3f1fb;--muted:#a9acd0;--line:#2e3470;--brand:#8d9cf0;--brand-ink:#12142b;--brown:#f3f1fb;--accent:#faae45;--unread:#262b62;--danger:#f08a76}}*{box-sizing:border-box}body,html{margin:0;height:100%}body{background:var(--bg);color:var(--ink);font:14px/1.5 Inter,system-ui,-apple-system,Segoe UI,sans-serif}a{color:var(--brand)}button{cursor:pointer}button,input{font:inherit}.logo img{border-radius:8px}.logo{display:inline-flex;align-items:center;gap:8px;font-weight:800;font-size:20px;letter-spacing:-.5px;color:var(--brown)}.btn{border:1px solid var(--line);background:var(--panel);color:var(--ink);padding:8px 14px;border-radius:8px;text-decoration:none;display:inline-block}.btn-primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink);font-weight:600}.btn:disabled{opacity:.6;cursor:default}.shell{display:grid;grid-template-columns:240px minmax(320px,420px) 1fr;height:100vh}.sidebar{border-right:1px solid var(--line);padding:16px;display:flex;flex-direction:column;gap:4px;overflow-y:auto}.sidebar .logo{margin-bottom:16px}.nav-item{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:7px 10px;border-radius:8px;border:0;background:none;color:var(--ink);text-align:left;text-decoration:none;width:100%;overflow:hidden}.nav-item span:first-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.nav-item.active,.nav-item:hover{background:var(--unread)}.nav-label{text-transform:uppercase;letter-spacing:.06em;margin:14px 10px 4px}.count,.nav-label{font-size:12px;color:var(--muted)}.sidebar-footer{margin-top:auto;gap:4px}.list,.sidebar-footer{display:flex;flex-direction:column}.list{border-right:1px solid var(--line);min-height:0}.list-head{padding:12px;border-bottom:1px solid var(--line);display:flex;gap:8px}.list-head input{flex:1 1;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--ink)}.list-body{overflow-y:auto;flex:1 1}.row{display:block;width:100%;text-align:left;border:0;border-bottom:1px solid var(--line);background:var(--panel);color:var(--ink);padding:10px 14px}.row.unread{background:var(--unread)}.row.unread .from,.row.unread .subject{font-weight:700}.row.selected{outline:2px solid var(--brand);outline-offset:-2px}.row-top{display:flex;justify-content:space-between;gap:8px}.from,.snippet,.subject{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.meta,.snippet{color:var(--muted);font-size:13px}.chip{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:0 6px}.reader{overflow-y:auto;padding:20px 28px}.reader h1{font-size:20px;margin:0 0 8px}.reader iframe{width:100%;min-height:70vh;border:1px solid var(--line);border-radius:8px;background:#fff}.reader pre{white-space:pre-wrap;font:inherit}.empty{color:var(--muted);padding:40px 20px;text-align:center}.empty img{width:160px;display:block;margin:0 auto 12px}.center{min-height:100vh;display:grid;place-items:center;padding:16px}.card{background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:28px;width:100%;max-width:380px;display:flex;flex-direction:column;gap:12px}.card input{padding:10px 12px;border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--ink)}.error{color:var(--danger);font-size:13px}.notice{background:var(--unread);border:1px solid var(--line);padding:10px 12px;border-radius:8px}.page{max-width:760px;margin:0 auto;padding:24px 16px}.acc{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line);flex-wrap:wrap}.status-active{color:var(--brand)}.status-error{color:var(--danger)}@media (max-width:900px){.shell{grid-template-columns:1fr;height:auto}.list,.sidebar{border-right:0;border-bottom:1px solid var(--line)}.list-body{max-height:60vh}}