@font-face{font-family:MailSans;src:local("Segoe UI Variable"),local("Segoe UI"),local("Arial")}*{box-sizing:border-box}[hidden]{display:none!important}:root{--ink:#1d1d1f;--muted:#6e6e73;--line:#e4e4e7;--surface:#fff;--wash:#f5f5f7;--accent:#0071e3;--accent-dark:#0062c4;--soft:#eaf4ff;--danger:#b42318;--shadow:0 18px 55px rgba(0,0,0,.09)}html,body{margin:0;min-height:100%;background:#f5f5f7;color:var(--ink);font-family:MailSans,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif}button{font:inherit}.app-shell{min-height:100vh;display:grid;grid-template-rows:auto 1fr auto}.topbar{height:64px;display:flex;align-items:center;justify-content:space-between;padding:0 clamp(20px,4vw,64px);background:rgba(255,255,255,.82);border-bottom:1px solid rgba(0,0,0,.08);backdrop-filter:saturate(180%) blur(20px)}.brand{display:flex;gap:10px;align-items:center;font-weight:650;letter-spacing:-.02em}.brand-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--ink);color:#fff}.brand-mark svg{width:19px;fill:none;stroke:currentColor;stroke-width:1.8}.privacy-note{display:flex;gap:8px;align-items:center;color:var(--muted);font-size:13px}.status-dot{width:7px;height:7px;border-radius:50%;background:#2fa56e;box-shadow:0 0 0 4px rgba(47,165,110,.12)}main{min-height:0;display:grid;place-items:center;padding:28px clamp(16px,3vw,44px)}.page-state{text-align:center;max-width:520px;padding:64px 24px}.page-state h1{font-size:28px;letter-spacing:-.035em;margin:18px 0 8px}.page-state p{color:var(--muted);line-height:1.6;margin:0 0 22px}.state-spinner{display:inline-block;width:30px;height:30px;border:3px solid #d7d7dc;border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.page-state.is-error .state-spinner{display:none}.primary-button,.refresh-button{border:0;cursor:pointer;transition:background .18s,transform .12s}.primary-button{background:var(--accent);color:#fff;border-radius:980px;padding:10px 18px}.primary-button:hover,.refresh-button:hover{background:var(--accent-dark)}.primary-button:active,.refresh-button:active{transform:scale(.97)}.mail-view{width:min(1380px,100%);height:min(800px,calc(100vh - 156px));min-height:560px;display:grid;grid-template-columns:360px minmax(0,1fr);background:var(--surface);border-radius:18px;overflow:hidden;box-shadow:var(--shadow);border:1px solid rgba(0,0,0,.06)}.mail-sidebar{min-width:0;display:flex;flex-direction:column;background:#fbfbfd;border-right:1px solid var(--line)}.mailbox-heading{display:flex;align-items:center;gap:12px;padding:22px 20px 18px}.mailbox-avatar,.sender-avatar{display:grid;place-items:center;flex:0 0 auto;border-radius:50%;font-weight:650}.mailbox-avatar{width:42px;height:42px;color:#fff;background:linear-gradient(145deg,#1888f2,#0062c4);box-shadow:inset 0 0 0 1px rgba(255,255,255,.25)}.mailbox-identity{min-width:0;display:grid;gap:3px}.mailbox-identity strong{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.mailbox-identity small{color:var(--muted);font-size:12px}.sidebar-toolbar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px 12px 20px;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.sidebar-toolbar>div{display:grid;gap:3px}.sidebar-toolbar strong{font-size:15px}.sidebar-toolbar span[role=status]{font-size:11px;color:var(--muted)}.refresh-button{display:flex;align-items:center;gap:6px;min-height:36px;padding:7px 12px;border-radius:980px;color:#fff;background:var(--accent);font-size:13px;font-weight:600}.refresh-button svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}.refresh-button.is-loading svg{animation:spin .7s linear infinite}.refresh-button:disabled{cursor:default;opacity:.65}.message-list{min-height:0;overflow:auto;padding:8px}.message-item{position:relative;width:100%;display:block;text-align:left;border:0;background:transparent;border-radius:11px;padding:14px 13px;cursor:pointer;color:inherit}.message-item+.message-item{margin-top:2px}.message-item:hover{background:#f0f0f3}.message-item.active{background:var(--soft)}.message-item.unread:before{content:"";position:absolute;left:5px;top:20px;width:6px;height:6px;border-radius:50%;background:var(--accent)}.message-row{display:flex;justify-content:space-between;align-items:baseline;gap:10px}.message-sender{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:650}.message-time{flex:none;color:var(--muted);font-size:11px}.message-subject{font-size:13px;font-weight:550;margin-top:5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-preview{font-size:12px;line-height:1.45;color:var(--muted);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.last-updated{padding:10px 18px 14px;border-top:1px solid var(--line);color:var(--muted);font-size:11px}.message-detail{min-width:0;overflow:auto;background:#fff}.mail-paper{min-height:100%;padding:clamp(30px,5vw,70px) clamp(30px,6vw,90px)}.detail-back{display:none}.detail-subject{max-width:900px;margin:0 0 26px;font-size:clamp(27px,3vw,40px);line-height:1.15;letter-spacing:-.035em;overflow-wrap:anywhere}.detail-meta{display:grid;grid-template-columns:48px minmax(0,1fr) auto;align-items:center;gap:13px;max-width:900px;padding-bottom:24px;border-bottom:1px solid var(--line)}.sender-avatar{width:48px;height:48px;background:#1d1d1f;color:#fff;font-size:18px}.sender-info{min-width:0;display:grid;gap:3px}.sender-info strong{font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.sender-info span{font-size:12px;color:var(--muted);overflow-wrap:anywhere}.detail-date{color:var(--muted);font-size:12px;text-align:right;white-space:nowrap}.detail-body{max-width:760px;margin:34px 0 0;padding:30px 32px;background:var(--wash);border-radius:12px;color:#2c2c2e;font-size:16px;line-height:1.8;letter-spacing:-.01em;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word}.empty-detail{height:100%;display:grid;place-items:center;color:var(--muted);font-size:14px}.empty-mailbox{display:grid;place-items:center;text-align:center;gap:7px;min-height:220px;padding:24px;color:var(--muted)}.empty-mailbox strong{color:var(--ink);font-size:15px}.refresh-error{color:var(--danger)!important}footer{display:flex;justify-content:space-between;padding:15px clamp(20px,4vw,64px);font-size:11px;color:var(--muted)}@keyframes spin{to{transform:rotate(360deg)}}@media(max-width:780px){.topbar{height:58px;padding:0 16px}.brand-mark{width:32px;height:32px}.privacy-note{font-size:12px}main{padding:12px}.mail-view{height:calc(100vh - 104px);min-height:500px;border-radius:14px;grid-template-columns:1fr}.mail-sidebar{border-right:0}.message-detail{display:none}.mail-view.detail-open .mail-sidebar{display:none}.mail-view.detail-open .message-detail{display:block}.mail-paper{padding:20px}.detail-back{display:inline-flex;align-items:center;border:0;background:transparent;color:var(--accent);padding:4px 0 20px;font-weight:600;cursor:pointer}.detail-subject{font-size:27px;margin-bottom:20px}.detail-meta{grid-template-columns:42px minmax(0,1fr);gap:11px}.sender-avatar{width:42px;height:42px}.detail-date{grid-column:2;text-align:left}.detail-body{margin-top:24px;padding:22px 18px;font-size:15px}footer{display:none}}@media(max-width:420px){.refresh-button span{display:none}.refresh-button{width:36px;justify-content:center;padding:0}.mailbox-heading{padding:18px 16px}.sidebar-toolbar{padding-left:16px}}