:root{--ck-primary:#2563EB;--ck-primary-hover:#1D4ED8;--ck-accent:#0891B2;--ck-ink:#0F172A;--ck-text:#334155;--ck-muted:#475569;--ck-canvas:#F6F8FC;--ck-surface:#FFFFFF;--ck-border:#E2E8F0;--ck-selected:#EFF6FF;--ck-success:#047857;--ck-warning:#92400E;--ck-danger:#B91C1C;--ck-focus:#1D4ED8;
--ck-font:Inter,system-ui,-apple-system,"Segoe UI",sans-serif;--ck-control-border:#64748B;
--ck-space-1:4px;--ck-space-2:8px;--ck-space-3:12px;--ck-space-4:16px;--ck-space-5:24px;--ck-space-6:32px;
--ck-radius-control:8px;--ck-radius-card:12px;--ck-radius-panel:16px;
--ck-app-bg:var(--ck-canvas);--ck-panel-bg:var(--ck-surface);--ck-body-text:var(--ck-text);color-scheme:light}
/* Semantic aliases above are the theme boundary. No incomplete dark toggle is exposed. */
*{box-sizing:border-box}body.ck-app{margin:0;background:var(--ck-app-bg);color:var(--ck-body-text);font:15px/1.5 var(--ck-font)}
.ck-app button,.ck-app input,.ck-app textarea{font:inherit}.ck-app button{min-height:44px;padding:10px 14px;border:1px solid var(--ck-control-border);border-radius:var(--ck-radius-control);color:var(--ck-text);background:var(--ck-surface);cursor:pointer;transition:background-color 140ms,border-color 140ms}
.ck-app button:hover{background:var(--ck-selected)}.ck-app button:disabled{opacity:.65;cursor:wait}.ck-app .primary{background:var(--ck-primary);border-color:var(--ck-primary);color:var(--ck-surface);font-weight:600}.ck-app .primary:hover{background:var(--ck-primary-hover);border-color:var(--ck-primary-hover)}
.ck-app :is(button,input,textarea,a,[tabindex]):focus-visible{outline:3px solid var(--ck-focus);outline-offset:3px}.ck-app input,.ck-app textarea{width:100%;min-height:44px;padding:12px;border:1px solid var(--ck-control-border);border-radius:var(--ck-radius-control);background:var(--ck-surface);color:var(--ck-ink)}
.ck-app textarea{resize:vertical}.ck-app label{display:block;font-weight:600;margin:12px 0 6px}.ck-app h1,.ck-app h2,.ck-app h3{color:var(--ck-ink);line-height:1.25}.ck-app h1{font-size:28px}.ck-app h2{font-size:20px}.ck-app h3{font-size:16px}.ck-app p{line-height:1.65}
.ck-app svg{width:20px;height:20px;flex-shrink:0}.ck-app [hidden]{display:none!important}.ck-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.ck-skip{position:fixed;left:16px;top:-100px;background:var(--ck-surface);color:var(--ck-primary);padding:12px;z-index:100}.ck-skip:focus{top:8px}
.ck-topbar{height:64px;display:flex;align-items:center;gap:16px;padding:0 24px;border-bottom:1px solid var(--ck-border);background:var(--ck-surface)}
.ck-brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ck-ink);font-size:22px;white-space:nowrap}.ck-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:10px;background:var(--ck-primary);color:white;font-size:14px;font-weight:800;letter-spacing:-1px}.ck-brand strong{font-weight:750}
.ck-top-context{font-size:13px;color:var(--ck-muted);padding-left:20px;border-left:1px solid var(--ck-border)}.ck-top-account{margin-left:auto;display:flex;align-items:center;gap:10px;min-width:0}.ck-top-account-copy{display:grid;min-width:0}.ck-top-account-copy small{font-size:11px;color:var(--ck-muted)}#account{font-size:13px;font-weight:600;color:var(--ck-ink);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:300px}.ck-avatar{width:34px;height:34px;display:grid;place-items:center;background:var(--ck-selected);color:var(--ck-primary-hover);border-radius:50%;font-weight:700;font-size:13px}
.ck-app #logout{border-color:var(--ck-border);display:flex;align-items:center;gap:8px}.ck-app #nav-toggle{padding:10px;display:none}.ck-main{max-width:1920px;margin:auto;padding:24px}.ck-feedback{min-height:34px;display:flex;align-items:center;gap:12px;flex-wrap:wrap;font-size:13px;color:var(--ck-muted);margin-bottom:8px}.ck-feedback p{margin:0}.ck-app #error{padding:12px 16px;background:#FEF2F2;color:var(--ck-danger);border-left:3px solid var(--ck-danger);border-radius:8px;overflow-wrap:anywhere;flex-basis:100%}
.ck-login{min-height:calc(100vh - 180px);display:grid;grid-template-columns:minmax(0,1fr) minmax(340px,440px);align-items:center;gap:80px;max-width:1080px;margin:auto;padding:40px 0}.ck-login-copy h1{font-size:48px;line-height:1.12;letter-spacing:-1.8px;max-width:510px;margin:20px 0}.ck-login-copy>p{font-size:17px;max-width:460px;color:var(--ck-muted)}.ck-eyebrow{font-size:11px;letter-spacing:1.6px;font-weight:700;color:var(--ck-primary-hover)}.ck-login-art{width:80px;height:80px;border-radius:24px;display:grid;place-items:center;background:var(--ck-selected);color:var(--ck-primary);border:1px solid var(--ck-border)}.ck-login-art svg{width:40px;height:40px}.ck-login-features{list-style:none;padding:0;margin:24px 0;display:grid;gap:12px;font-size:14px}.ck-login-features li{display:flex;align-items:center;gap:10px}.ck-login-features svg{color:var(--ck-success)}
.ck-login-card{padding:32px;border:1px solid var(--ck-border);border-radius:var(--ck-radius-panel);background:var(--ck-surface);box-shadow:0 8px 32px #0F172A05}.ck-login-card h2{font-size:24px;margin:10px 0}.ck-login-card .helper{font-size:13px;color:var(--ck-muted)}.ck-app #login{display:grid;gap:4px}.ck-app #login .primary{margin-top:20px}.ck-platform-note{margin-top:24px;padding-top:20px;border-top:1px solid var(--ck-border)}.ck-platform-note h3{margin:0 0 6px}.ck-platform-note p{font-size:13px;color:var(--ck-muted);margin:0}.ck-tag{display:inline-block;font-size:11px;padding:3px 8px;border-radius:6px;background:var(--ck-canvas);color:var(--ck-muted);margin-left:8px;font-weight:500}
.ck-workspace{display:grid;grid-template-columns:244px minmax(320px,360px) minmax(0,1fr);min-height:calc(100vh - 150px);border:1px solid var(--ck-border);border-radius:var(--ck-radius-panel);background:var(--ck-surface);overflow:hidden}.ck-sidebar{grid-column:1;grid-row:1;background:var(--ck-canvas);border-right:1px solid var(--ck-border);display:flex;flex-direction:column;padding:20px 16px;gap:24px;min-width:0}.ck-sidebar-actions{display:grid;gap:8px}.ck-sidebar-actions button{display:flex;align-items:center;justify-content:center;gap:10px}.ck-sidebar-section{font-size:11px;text-transform:uppercase;letter-spacing:1px;font-weight:650;color:var(--ck-muted);margin:0 0 10px 10px}.ck-sidebar nav{display:grid;gap:4px}.ck-sidebar nav button{display:flex;align-items:center;gap:10px;width:100%;text-align:left;border:1px solid transparent;background:transparent;padding:10px;overflow-wrap:anywhere;font-size:14px}.ck-sidebar nav button:hover{background:var(--ck-surface)}.ck-sidebar nav button[aria-current=page]{background:var(--ck-selected);color:var(--ck-primary-hover);border-color:var(--ck-primary);font-weight:650}.ck-sidebar-account{margin-top:auto;border-top:1px solid var(--ck-border);padding-top:20px}.ck-sidebar-account strong{display:block;overflow-wrap:anywhere;font-size:13px;color:var(--ck-ink);padding:0 10px}.ck-sidebar-account p{font-size:12px;color:var(--ck-muted);padding:0 10px;margin:6px 0}.ck-drawer-title{display:none}.ck-app #nav-backdrop{position:fixed;inset:0;z-index:20;background:#0F172A66;border:0;border-radius:0}
.ck-workspace-content{grid-column:2/-1;grid-row:1;min-width:0}.ck-inbox-grid{display:grid;grid-template-columns:minmax(320px,360px) minmax(0,1fr);min-height:100%;height:100%}.list-pane{padding:20px 12px;border-right:1px solid var(--ck-border);min-width:0}.ck-list-heading{display:flex;gap:10px;align-items:center;padding:0 8px 16px}.ck-list-heading h2{font-size:19px;margin:0;overflow-wrap:anywhere}.ck-list-heading button{margin-left:auto;border-color:var(--ck-border);padding:10px}.ck-list-subtitle{font-size:12px;color:var(--ck-muted);padding:0 8px;margin:0 0 16px}.message{width:100%;text-align:left;display:grid;gap:5px;margin-bottom:6px;overflow-wrap:anywhere;min-height:86px}.ck-app .message{border-color:transparent;border-radius:10px;padding:12px}.ck-app .message:hover{background:var(--ck-canvas)}.ck-app .message.unread{font-weight:650}.ck-app .message.selected{background:var(--ck-selected);border-color:var(--ck-primary)}.message small{font-size:12px;color:var(--ck-muted);font-weight:400}.ck-app #more{width:100%;margin-top:12px}.ck-message-sender{font-size:13px;color:var(--ck-ink)}.ck-message-subject{font-size:14px}.ck-message-meta{display:flex;gap:8px;align-items:center;justify-content:space-between}.ck-unread-label{font-size:11px;color:var(--ck-primary-hover);font-weight:650}
.ck-reader{padding:28px;min-width:0;overflow-wrap:anywhere}.ck-reader #reader-content>h2{font-size:24px;letter-spacing:-.4px;margin-top:4px}.ck-reader dl{font-size:13px;color:var(--ck-muted);display:grid;grid-template-columns:60px minmax(0,1fr);gap:8px 12px}.ck-reader dt{font-weight:600}.ck-reader dd{margin:0}.ck-reader pre{white-space:pre-wrap;font:15px/1.75 var(--ck-font);padding-top:24px;margin:24px 0;border-top:1px solid var(--ck-border);color:var(--ck-text)}.ck-empty{display:grid;justify-items:center;align-content:center;min-height:350px;max-width:400px;margin:auto;text-align:center;color:var(--ck-muted);padding:24px}.ck-empty-icon{width:64px;height:64px;background:var(--ck-canvas);border-radius:20px;display:grid;place-items:center;color:var(--ck-primary);margin-bottom:16px}.ck-empty-icon svg{width:28px;height:28px}.ck-empty h3{margin:0;font-size:18px}.ck-empty p{font-size:14px}.ck-app #reader-back{display:none;margin-bottom:16px}.ck-skeleton{padding:12px 8px}.ck-skeleton span{display:block;background:var(--ck-border);border-radius:6px;height:12px;margin-bottom:12px}.ck-skeleton span:nth-child(2){width:75%}.ck-skeleton span:nth-child(3){width:45%}
.ck-app #composer,.ck-app #draft-panel{padding:24px;min-width:0}.ck-app #composer .toolbar{display:flex;align-items:center;justify-content:space-between;gap:16px}.ck-app #composer .toolbar h2{margin:0}.ck-app #compose-form{display:grid;gap:6px}.recipient-columns{display:grid;grid-template-columns:1fr 1fr;gap:16px}.compose-actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}.ck-app #compose-attachments button{margin:4px}.ck-app #draft-state{font-size:13px;background:var(--ck-canvas);padding:12px;border-radius:8px}.ck-compose-origin{font-size:13px;color:var(--ck-muted)}.ck-footer{text-align:center;font-size:12px;color:var(--ck-muted);padding:16px}.ck-badge{font-size:11px;background:var(--ck-selected);color:var(--ck-primary-hover);padding:5px 8px;border-radius:6px;white-space:nowrap}
@media(max-width:1279px){.ck-topbar{padding:0 20px}.ck-top-context{display:none}.ck-app #nav-toggle{display:inline-flex}.ck-workspace{grid-template-columns:minmax(0,1fr)}.ck-workspace-content{grid-column:1}.ck-sidebar{display:none;position:fixed;left:0;top:0;bottom:0;width:280px;max-width:calc(100vw - 40px);z-index:30;border-right:1px solid var(--ck-border);overflow:auto}.ck-sidebar[data-open=true]{display:flex}.ck-drawer-title{display:flex;align-items:center;justify-content:space-between}.ck-drawer-title h2{margin:0}.ck-app #nav-close{display:flex;padding:10px}.ck-inbox-grid{grid-template-columns:minmax(300px,38%) minmax(0,1fr)}.ck-login{gap:40px}.ck-login-copy h1{font-size:40px}}
@media(max-width:767px){.ck-main{padding:12px}.ck-topbar{padding:0 12px;gap:10px}.ck-brand{font-size:19px}.ck-mark{width:30px;height:30px}.ck-top-account{gap:8px}.ck-top-account-copy small,.ck-avatar,.ck-app #logout span{display:none}#account{font-size:11px;max-width:120px}.ck-app #logout{padding:10px;border-color:transparent}.ck-login{grid-template-columns:minmax(0,1fr);gap:24px;min-height:0;padding:24px 4px}.ck-login-copy h1{font-size:32px;letter-spacing:-1px;margin:12px 0}.ck-login-copy>p{font-size:15px}.ck-login-art,.ck-login-features{display:none}.ck-login-card{padding:24px}.ck-feedback{font-size:12px;min-height:24px}.ck-workspace{min-height:calc(100vh - 135px)}.ck-inbox-grid{display:block}.list-pane{border-right:0;padding:16px 8px}.ck-reader{padding:20px}.ck-reader #reader-content>h2{font-size:22px}.ck-inbox-grid[data-view=list]>.ck-reader{display:none}.ck-inbox-grid[data-view=reader]>.list-pane{display:none}.ck-app #reader-back{display:inline-flex;align-items:center;gap:8px}.ck-empty{min-height:260px}.recipient-columns{grid-template-columns:minmax(0,1fr)}.ck-app #composer,.ck-app #draft-panel{padding:16px}.ck-app #composer .toolbar{align-items:flex-start;flex-wrap:wrap}.ck-topbar .ck-badge{display:none}}

/* UI-2: bounded list viewport, keyed rows and an explicit non-virtual alternative. */
.ck-list-help{font-size:12px;color:var(--ck-muted);margin:0 8px 8px}.ck-app #list-mode{font-size:12px;margin:0 8px 12px;min-height:44px}.ck-app #row-measure{position:absolute;height:7.5rem;width:0;pointer-events:none;visibility:hidden}
.ck-app #message-viewport{height:clamp(240px,calc(100dvh - 350px),620px);overflow:auto;position:relative;overscroll-behavior:contain;padding:4px;scrollbar-gutter:stable}
.ck-app #messages{position:relative;list-style:none;margin:0;padding:0}.ck-app .ck-message-row{position:absolute;left:0;right:0;height:7.5rem;padding:4px 0}.ck-app .ck-message-row .message{height:100%;min-height:0;margin:0;grid-template-rows:20px 24px 20px;align-content:center;gap:5px}.ck-message-row .ck-message-sender,.ck-message-row .ck-message-subject{display:block;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.ck-message-row .ck-message-meta{min-width:0;gap:4px}.ck-message-row small{white-space:nowrap;font-size:11px}.ck-message-row .ck-unread-label{white-space:nowrap}
.ck-app .ck-list-all .ck-message-row{position:static;height:auto;min-height:7.5rem}.ck-app .ck-list-all .message{height:auto;min-height:7rem;grid-template-rows:auto auto auto}.ck-list-all .ck-message-sender,.ck-list-all .ck-message-subject{white-space:normal;overflow-wrap:anywhere}.ck-list-all .ck-message-meta{flex-wrap:wrap}
.ck-reader-origin,.ck-reader-state{font-size:12px;color:var(--ck-muted);margin:0 0 12px}.ck-reader-attachments{margin-top:24px;border-top:1px solid var(--ck-border);padding-top:16px}.ck-reader-attachments ul{list-style:none;padding:0;display:grid;gap:8px}.ck-reader-attachments button{max-width:100%;overflow-wrap:anywhere;text-align:left}.ck-reader{max-height:calc(100dvh - 160px);overflow:auto}
@media(min-width:768px) and (max-width:1023px){.ck-inbox-grid{display:block}.ck-inbox-grid[data-view=list]>.ck-reader{display:none}.ck-inbox-grid[data-view=reader]>.list-pane{display:none}.ck-app #reader-back{display:inline-flex;align-items:center;gap:8px}}
@media(max-width:1023px){.ck-reader{max-height:none;overflow:visible}.list-pane{border-right:0}.ck-app #message-viewport{height:clamp(240px,calc(100dvh - 330px),620px)}}

/* UI-3: resize handle has an explicit keyboard alternative. */
.ck-app #composer{width:min(100%,900px);max-width:100%;min-width:min(100%,480px);height:calc(100dvh - 190px);min-height:320px;max-height:calc(100dvh - 150px);resize:both;overflow:auto;margin:16px auto;border:1px solid var(--ck-border);border-radius:12px;background:var(--ck-surface)}
.ck-app #composer.ck-compose-expanded{width:100%;height:calc(100dvh - 150px)}.ck-app #composer .toolbar{flex-wrap:wrap}.ck-app #composer .toolbar h2{margin-right:auto}.ck-app #compose-save-state,.ck-app #compose-upload-state{font-size:13px;color:var(--ck-muted)}.ck-app #compose-attachments{list-style:none;padding:0;overflow-wrap:anywhere}.ck-app #compose-attachments li{padding:8px;border-bottom:1px solid var(--ck-border)}.ck-app #compose-form .compose-actions{padding:12px 0}.ck-app #draft-list{display:grid;gap:8px}
@media(max-width:767px){.ck-app #composer,.ck-app #composer.ck-compose-expanded{width:100%;min-width:0;height:auto;max-height:none;min-height:calc(100dvh - 150px);resize:none;margin:0;border:0;border-radius:0}.ck-app #compose-size{display:none}.ck-app #compose-form textarea{min-height:240px}.ck-app #composer .toolbar button{font-size:13px}}

.ck-app #appearance{padding:24px;max-width:680px}.ck-app #appearance select{font:inherit;min-height:44px;width:100%;padding:10px;border:1px solid var(--ck-control-border);border-radius:8px;background:var(--ck-surface);color:var(--ck-text)}.ck-app #appearance button{margin:16px 8px 0 0}.ck-app select:focus-visible{outline:3px solid var(--ck-focus);outline-offset:3px}
.ck-app[data-density=compact] .ck-message-row .message{padding:8px;grid-template-rows:18px 22px 18px;gap:3px}.ck-app[data-density=compact] #row-measure,.ck-app[data-density=compact] .ck-message-row{height:6rem}.ck-app[data-layout=single] .ck-inbox-grid{display:block}.ck-app[data-layout=single] .ck-inbox-grid[data-view=list]>.ck-reader{display:none}.ck-app[data-layout=single] .ck-inbox-grid[data-view=reader]>.list-pane{display:none}.ck-app[data-layout=single] #reader-back{display:inline-flex}.ck-app[data-layout=single] .list-pane{border-right:0}.ck-app[data-layout=single] .ck-reader{max-height:none}
@media(max-width:767px){.ck-app #appearance-open{font-size:11px;padding:8px}.ck-topbar{gap:6px}.ck-brand{font-size:16px}.ck-mark{display:none}.ck-app #appearance{padding:16px}.ck-topbar:has(#account-panel:not([hidden])){height:auto;min-height:100px;flex-wrap:wrap;padding-block:8px}.ck-topbar .ck-brand{min-width:0;flex:1}.ck-topbar .ck-brand strong{max-width:190px;overflow:hidden;text-overflow:ellipsis}.ck-topbar #account-panel{flex-basis:100%;margin:0;justify-content:space-between}.ck-topbar #account{max-width:270px}}

.ck-brand .ck-logo{display:block;width:220px;height:64px;object-fit:cover;flex-shrink:0}.ck-brand:not([data-custom-brand=true]) strong{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}.ck-brand[data-custom-brand=true]{gap:8px}.ck-brand[data-custom-brand=true] .ck-logo{width:150px;height:52px}.ck-brand[data-custom-brand=true] strong{font-size:12px;max-width:140px;white-space:normal}
@media(max-width:767px){.ck-brand .ck-logo,.ck-brand[data-custom-brand=true] .ck-logo{width:180px;height:52px}.ck-brand[data-custom-brand=true] strong{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}}

.ck-app #platform-form{margin-top:16px;display:grid;gap:4px}.ck-app #platform-form button{margin-top:16px}.ck-app #platform-home{max-width:780px;margin:32px auto;padding:32px;border:1px solid var(--ck-border);border-radius:16px;background:var(--ck-surface);overflow-wrap:anywhere}
@media(max-width:767px){.ck-app #platform-home{padding:20px;margin:16px auto}.ck-app #platform-home .compose-actions{display:grid}}

.ck-app #accounts-panel{border-top:1px solid var(--ck-border);margin-top:24px;padding-top:16px}.ck-app #accounts-list{list-style:none;padding:0;display:grid;gap:16px}.ck-app #accounts-list>li{padding:16px;background:var(--ck-canvas);border:1px solid var(--ck-border);border-radius:12px;overflow-wrap:anywhere}.ck-app #accounts-list h3{margin:0 0 8px}.ck-app #accounts-list p,.ck-app #account-help{font-size:13px;color:var(--ck-muted)}.ck-app #accounts-title{margin-right:auto}.ck-app #account-email:read-only{background:var(--ck-canvas)}
@media(prefers-reduced-motion:reduce){.ck-app *,.ck-app *::before,.ck-app *::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.ck-unified-status{font-size:11px;line-height:1.5;margin:0 8px 8px;color:var(--ck-muted)}.ck-row-origin{display:block;min-width:0;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--ck-primary-hover);font-size:10px;font-weight:500}.ck-message-meta:has(.ck-row-origin){display:grid;grid-template-columns:minmax(0,1fr) auto}.ck-message-meta .ck-row-origin{grid-column:1/-1;grid-row:2}.ck-message-meta:has(.ck-row-origin) .ck-unread-label{grid-column:2;grid-row:1}
.ck-app #mailbox-switcher label{font-size:11px;color:var(--ck-muted)}.ck-app #mailbox-selector{font:inherit;font-size:12px;width:100%;min-height:44px;padding:8px;border:1px solid var(--ck-control-border);border-radius:8px;background:var(--ck-surface);color:var(--ck-text)}.ck-app #mailbox-selector:focus-visible{outline:3px solid var(--ck-focus);outline-offset:3px}.ck-app #mail-platform-back{margin-top:8px;width:100%;font-size:12px}
body.ck-app{background:linear-gradient(135deg,#edf3fa 0%,var(--ck-canvas) 55%,#edf4fc 100%)}
.ck-topbar{height:76px;background:transparent;border:0;padding:0 20px;gap:20px}
.ck-top-context{border:0;padding:0}.ck-app #appearance-open{display:inline-flex;align-items:center;gap:8px;background:#ffffffb8}
.ck-app #logout{background:#ffffffb8;border-color:var(--ck-control-border)}
.ck-main:has(#mail:not([hidden])){padding:0 12px 12px;max-width:1920px}
.ck-main:has(#mail:not([hidden])) .ck-feedback{margin:0 8px;min-height:24px;font-size:12px}
.ck-app:has(#mail:not([hidden])) .ck-footer{display:none}
.ck-workspace{grid-template-columns:236px minmax(0,1fr);gap:10px;height:calc(100dvh - 112px);min-height:540px;background:transparent;border:0;border-radius:0;overflow:visible}
.ck-sidebar{border:0;border-radius:18px;background:#ffffff80;padding:18px 12px;gap:24px;min-height:0;overflow:auto}
.ck-sidebar[data-open=true]{background:var(--ck-surface)}
.ck-sidebar-actions .primary{background:linear-gradient(115deg,#087af1,var(--ck-primary));box-shadow:0 5px 15px #2563eb18;min-height:48px;justify-content:flex-start;padding-left:18px}
.ck-sidebar-actions>button:not(.primary){background:transparent;border-color:var(--ck-control-border);justify-content:flex-start}
.ck-sidebar nav{gap:3px}.ck-sidebar nav button{border-radius:8px;padding:9px 12px;min-height:44px;font-size:13px}
.ck-sidebar nav button[aria-current=page]{box-shadow:inset 3px 0 var(--ck-primary);border-color:transparent;background:#e5edff}
.ck-sidebar-section{letter-spacing:.5px;font-size:10px}.ck-sidebar-account{padding-top:14px}
.ck-workspace-content{position:relative;grid-column:2;min-width:0;min-height:0;height:100%}
.ck-inbox-grid{grid-template-columns:minmax(330px,390px) minmax(0,1fr);gap:10px;align-items:stretch;min-height:0}
.list-pane,.ck-reader{background:#ffffffed;border:1px solid #fff;border-radius:18px;min-width:0}
.list-pane{padding:18px 8px 12px;display:flex;flex-direction:column;min-height:0;height:100%}
.ck-list-heading{padding:0 8px 8px;gap:6px}.ck-list-heading h2{font-size:17px;letter-spacing:-.3px}
.ck-list-heading button{background:transparent}.ck-list-subtitle{margin-bottom:8px}
.ck-list-help{font-size:11px;margin-bottom:6px;line-height:1.45}
.ck-app #list-mode{align-self:flex-start;margin-bottom:8px;min-height:44px;padding:8px 10px;background:transparent;font-size:11px}
.ck-app #message-viewport{height:auto;flex:1 1 0;min-height:0;padding:3px}
.ck-app #row-measure,.ck-app .ck-message-row{height:5.5rem}
.ck-app .ck-message-row{padding:0;border-bottom:1px solid var(--ck-border)}
.ck-app .ck-message-row .message{display:grid;grid-template-columns:38px minmax(0,1fr);grid-template-rows:auto;align-items:center;align-content:center;gap:12px;padding:12px 8px;border-radius:0;border:0;border-left:3px solid transparent;background:transparent}
.ck-app .ck-message-row .message:hover{background:var(--ck-canvas)}
.ck-app .ck-message-row .message.selected{background:linear-gradient(90deg,#e7efff,#f1f6ff);border-left-color:var(--ck-primary)}
.ck-row-avatar,.ck-reader-avatar{border-radius:50%;display:grid;place-items:center;flex-shrink:0;background:#dde8ff;color:var(--ck-primary-hover);font-weight:650}
.ck-row-avatar{width:38px;height:38px;font-size:14px}.ck-message-row:nth-child(3n+2) .ck-row-avatar{background:#d8f2fa;color:#155e75}
.ck-row-copy{display:grid;gap:3px;min-width:0}.ck-message-row .ck-message-sender{font-size:13px;line-height:1.3;font-weight:600}
.ck-message-row .unread .ck-message-sender{font-weight:750}.ck-message-row .ck-message-subject{font-size:12px;line-height:1.4;font-weight:400}
.ck-message-row .ck-message-meta{font-weight:400;line-height:1.4}.ck-message-row .ck-message-meta small{font-size:10px}
.ck-app[data-density=compact] #row-measure,.ck-app[data-density=compact] .ck-message-row{height:5rem}
.ck-app[data-density=compact] .ck-message-row .message{grid-template-rows:auto;gap:10px;padding:8px}
.ck-app .ck-list-all .ck-message-row{min-height:5.5rem;height:auto}.ck-app .ck-list-all .message{min-height:5.5rem;height:auto;grid-template-rows:auto}
.ck-reader{padding:24px;max-height:100%;height:100%}
.ck-reader-origin{display:inline-block;padding:4px 9px;background:var(--ck-selected);border-radius:6px;font-size:11px;margin-bottom:16px}
.ck-reader #reader-content>h2{font-size:24px;line-height:1.35;letter-spacing:-.6px;margin:0 0 10px}
.ck-reader-state{font-size:11px;margin-bottom:20px}
.ck-reader-meta{display:flex;align-items:flex-start;gap:12px}.ck-reader-avatar{width:42px;height:42px;font-size:15px;margin-top:3px}
.ck-reader dl{margin:0;flex:1;min-width:0;grid-template-columns:40px minmax(0,1fr);gap:5px 8px;font-size:12px}
.ck-reader pre{font-size:14px;line-height:1.8;margin:22px 0 28px;padding-top:22px}
.ck-reader-attachments{margin-top:20px;padding-top:16px}.ck-reader-attachments h3{font-size:13px;font-weight:600}
.ck-reader-attachments ul{grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),240px));gap:10px}
.ck-app .ck-attachment-card{display:grid;grid-template-columns:28px minmax(0,1fr);grid-template-rows:auto auto;column-gap:10px;align-items:center;width:100%;padding:14px;text-align:left;border-radius:10px}
.ck-attachment-card svg{grid-row:1/3;width:26px;height:30px;color:var(--ck-primary-hover)}
.ck-attachment-card span{font-size:12px;overflow-wrap:anywhere}.ck-attachment-card small{font-size:11px;color:var(--ck-muted)}
.ck-reader-actions{padding:16px 0;margin-top:12px}.ck-reader-actions button{border-radius:24px;font-size:12px;min-height:44px;padding:10px 18px}
.ck-empty{min-height:460px}.ck-empty-icon{background:linear-gradient(135deg,#e6efff,#e0f4fc)}
.ck-app #composer{border-radius:14px;border-color:#b4c4dc;box-shadow:0 16px 54px #19395c2b;padding:0 20px 20px;background:var(--ck-surface)}
.ck-app #composer>.toolbar{position:sticky;top:0;z-index:1;margin:0 -20px;padding:12px 16px;background:linear-gradient(105deg,#eaf3fc,#f5f9ff);gap:8px;border-bottom:1px solid var(--ck-border)}
.ck-app #composer .toolbar h2{font-size:14px}.ck-app #composer .toolbar button{font-size:11px;padding:6px 10px;background:#ffffffb8}
.ck-app #compose-form label{font-size:12px;margin-top:8px}.ck-app #compose-form input:not([type=file]){padding:8px 10px;border-radius:5px}
.ck-app #compose-form textarea{min-height:180px;font-size:14px}.ck-compose-origin{font-size:11px;margin:10px 0 6px}
.ck-app #draft-state{padding:6px 10px;margin:6px 0;font-size:11px}.ck-app #compose-save-state,.ck-app #compose-upload-state{font-size:11px;margin:4px 0}
.ck-app #compose-form .helper{font-size:11px}.ck-app #compose-form .compose-actions{gap:8px}
.ck-app #compose-form .compose-actions button{font-size:12px;padding:8px 12px}.ck-app #compose-send{order:-1;min-width:100px}
@media(min-width:1024px){
 .ck-app #composer{position:absolute;right:12px;bottom:12px;z-index:10;width:min(560px,calc(100% - 24px));min-width:360px;height:min(650px,calc(100dvh - 150px));max-height:calc(100dvh - 140px);margin:0}
 .ck-app #composer.ck-compose-expanded{inset:8px;width:calc(100% - 16px);height:calc(100% - 16px);max-height:none}
}
@media(min-width:1024px) and (max-width:1279px){.ck-workspace{grid-template-columns:minmax(0,1fr)}.ck-workspace-content{grid-column:1}.ck-inbox-grid{grid-template-columns:minmax(320px,38%) minmax(0,1fr)}}
@media(max-width:1023px){
 .ck-workspace{grid-template-columns:minmax(0,1fr);height:auto}.ck-workspace-content{grid-column:1;height:auto}.ck-inbox-grid{display:block;height:auto}
 .ck-reader{max-height:none;height:auto}.list-pane{height:auto}.ck-app #message-viewport{height:clamp(240px,calc(100dvh - 360px),900px);flex:none}
 .ck-app #composer,.ck-app #composer.ck-compose-expanded{position:relative;width:100%;height:auto;min-width:0;max-height:none;resize:none;margin:0}
 .ck-app #compose-size{display:none}.ck-empty{min-height:300px}
}
@media(max-width:767px){
 .ck-topbar{padding-inline:12px;gap:8px}.ck-top-context,.ck-toolbar-label{display:none}
 .ck-main:has(#mail:not([hidden])){padding:0 6px 8px}.ck-main:has(#mail:not([hidden])) .ck-feedback{min-height:22px;font-size:11px}
 .ck-workspace{min-height:calc(100dvh - 160px)}.ck-sidebar{border-radius:0}.ck-app #appearance-open{padding:10px}
 .list-pane,.ck-reader{border-radius:14px}.list-pane{padding:14px 6px 10px}.ck-reader{padding:20px 16px}
 .ck-reader #reader-content>h2{font-size:21px}.ck-reader-meta{gap:8px}.ck-reader dl{font-size:11px;grid-template-columns:32px minmax(0,1fr)}
 .ck-reader-avatar{width:34px;height:34px;font-size:12px}.ck-reader-actions button{padding:8px 12px}
 .ck-app #composer{padding:0 16px 16px}.ck-app #composer>.toolbar{margin:0 -16px;padding:10px 12px}.ck-app #composer .toolbar h2{font-size:14px}
 .ck-app #compose-form textarea{min-height:240px}.ck-footer{padding:8px;font-size:11px}
}