:root{--bg: #ffffff;--bg-sunken: #f6f7f9;--bg-raised: #ffffff;--bg-hover: #eef0f3;--bg-active: #e3e8ef;--border: #e2e5ea;--border-strong: #cbd2dc;--text: #16191d;--text-muted: #6b7280;--text-faint: #9aa1ac;--accent: #2563eb;--accent-text: #ffffff;--danger: #dc2626;--warn: #b45309;--success: #15803d;--shadow: 0 1px 2px rgb(0 0 0 / .06), 0 8px 24px rgb(0 0 0 / .08);--radius: 8px;--list-width: 400px;--sidebar-width: 250px;font-synthesis-weight:none}@media(prefers-color-scheme:dark){:root{--bg: #14171a;--bg-sunken: #101315;--bg-raised: #1b1f23;--bg-hover: #22272c;--bg-active: #2b3138;--border: #282d33;--border-strong: #3a4149;--text: #e8eaed;--text-muted: #9aa4b0;--text-faint: #6e7883;--accent: #5b9cff;--accent-text: #0b1220;--danger: #f87171;--warn: #fbbf24;--success: #4ade80;--shadow: 0 1px 2px rgb(0 0 0 / .4), 0 8px 24px rgb(0 0 0 / .45)}}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:var(--bg-sunken);color:var(--text);font:14px/1.5 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8px;border-radius:6px;color:var(--text-muted)}.btn-ghost:hover{background:var(--bg-hover);color:var(--text)}.btn:disabled{opacity:.5;cursor:not-allowed}.login{display:grid;place-items:center;height:100%;padding:20px}.login form{background:var(--bg-raised);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow);padding:32px;width:min(360px,100%);display:grid;gap:14px}.login h1{margin:0;font-size:19px}.login p{margin:0;color:var(--text-muted);font-size:13px}.app{display:grid;grid-template-columns:var(--sidebar-width) var(--list-width) 1fr;height:100%;background:var(--bg)}.sidebar{background:var(--bg-sunken);border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden}.sidebar-head{padding:14px 14px 10px;display:flex;align-items:center;gap:8px}.sidebar-head strong{font-size:15px;flex:1}.sidebar-scroll{overflow-y:auto;padding:0 8px 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.nav-item{padding-left:22px}.status-dot{width:7px;height:7px;border-radius:50%;flex-shrink:0}.status-online{background:var(--success)}.status-syncing,.status-connecting{background:var(--warn)}.status-error{background:var(--danger)}.status-idle{background:var(--text-faint)}.list{border-right:1px solid var(--border);display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}.list-head{padding:10px 12px;border-bottom:1px solid var(--border);display:flex;gap:8px;align-items:center}.list-head input[type=search]{padding:6px 10px}.list-scroll{overflow-y:auto;flex:1}.row{display:grid;grid-template-columns:3px 1fr;gap:10px;padding:0;border-bottom:1px solid var(--border);background:none;border-left:none;border-right:none;border-top:none;width:100%;text-align:left;align-items:stretch}.row:hover{background:var(--bg-hover)}.row.selected{background:var(--bg-active)}.row .stripe{border-radius:0 2px 2px 0}.row .body{padding:9px 12px 10px 4px;min-width:0}.row .top{display:flex;align-items:baseline;gap:8px}.row .sender{font-weight:600;font-size:13.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}.row.unread .sender:before{content:"";display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:6px;vertical-align:1px}.row .date{font-size:11.5px;color:var(--text-faint);white-space:nowrap;font-variant-numeric:tabular-nums}.row .subject{font-size:13px;margin-top:1px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.row.unread .subject{font-weight:600}.row .snippet{font-size:12.5px;color:var(--text-muted);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.row .badges{display:flex;gap:5px;align-items:center;margin-top:4px;font-size:11px;color:var(--text-faint)}.account-tag{font-size:11px;padding:1px 6px;border-radius:4px;font-weight:500;white-space:nowrap}.empty{padding:48px 24px;text-align:center;color:var(--text-muted);font-size:13px}.reader{display:flex;flex-direction:column;overflow:hidden;background:var(--bg)}.reader-head{padding:16px 20px 12px;border-bottom:1px solid var(--border)}.reader-head h2{margin:0 0 10px;font-size:18px;line-height:1.35}.reader-meta{display:flex;gap:10px;align-items:center;font-size:13px;flex-wrap:wrap}.reader-meta .who{font-weight:600}.reader-meta .addr{color:var(--text-muted)}.reader-actions{display:flex;gap:6px;margin-top:12px;flex-wrap:wrap}.reader-body{flex:1;overflow:auto;padding:0}.reader-body iframe{width:100%;border:none;display:block;background:#fff}.notice{margin:12px 20px;padding:9px 12px;border-radius:6px;background:color-mix(in srgb,var(--warn) 12%,transparent);border:1px solid color-mix(in srgb,var(--warn) 35%,transparent);font-size:12.5px;display:flex;align-items:center;gap:10px}.notice.error{background:color-mix(in srgb,var(--danger) 12%,transparent);border-color:color-mix(in srgb,var(--danger) 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20px;overflow-y:auto;display:grid;gap:14px}.dialog-foot{padding:14px 20px;border-top:1px solid var(--border);display:flex;gap:8px;justify-content:flex-end;align-items:center}.dialog-foot .grow{flex:1}.field{display:grid;gap:5px}.field label{font-size:12.5px;color:var(--text-muted);font-weight:500}.field .hint{font-size:12px;color:var(--text-faint)}.field-row{display:grid;grid-template-columns:1fr 120px 120px;gap:10px;align-items:end}.checkbox{display:flex;align-items:center;gap:8px;font-size:13px}.checkbox input{width:auto}textarea.compose{min-height:260px;resize:vertical;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;line-height:1.6}.account-card{border:1px solid var(--border);border-radius:8px;padding:12px 14px;display:flex;align-items:center;gap:12px}.account-card .info{flex:1;min-width:0}.account-card .name{font-weight:600;display:flex;align-items:center;gap:7px}.account-card .sub{font-size:12.5px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-card .err{font-size:12px;color:var(--danger);margin-top:3px}.spinner{width:15px;height:15px;border:2px solid var(--border-strong);border-top-color:var(--accent);border-radius:50%;animation:spin .7s linear infinite;flex-shrink:0}@keyframes spin{to{transform:rotate(360deg)}}.back-btn{display:none}@media(max-width:1100px){:root{--list-width: 340px;--sidebar-width: 210px}}@media(max-width:860px){.app{grid-template-columns:1fr}.sidebar,.list,.reader{display:none}.app[data-pane=sidebar] .sidebar,.app[data-pane=list] .list,.app[data-pane=reader] .reader{display:flex}.back-btn{display:inline-flex}.field-row{grid-template-columns:1fr}}