:root{
  --s1:8px;--s2:12px;--s3:16px;--s4:24px;--s5:40px;--s6:64px;--s7:88px;
  --h1:clamp(40px,5vw,48px);--h2:clamp(28px,3.2vw,32px);--h3:22px;--body:16px;--small:14px;--micro:12px;
  --radius-sm:8px;--radius-control:12px;--radius-card:16px;--radius-stage:24px;
  --paper:#fff;--ink:#111827;--night:#0b0f19;--muted:#6b7280;--line:#e5e7eb;--soft:#f7f7f8;--brand:#ffd21e;--brand-hot:#ff9d00;--danger:#b93831;--success:#177245;
  --max:1240px;--header-h:68px;font-family:"Source Sans 3","Source Sans Pro","Noto Sans SC","Microsoft YaHei",Arial,sans-serif;color:var(--ink);background:var(--paper)
}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:84px}body{margin:0;min-height:100vh;display:flex;flex-direction:column;font-size:var(--body);line-height:1.6;background:var(--paper)}main{flex:1 0 auto}body>footer{margin-top:auto}body>footer>:last-child{margin-bottom:0}a{color:inherit}button,input,textarea{font:inherit}[hidden],.hidden{display:none!important}.wrap{width:min(calc(100% - 40px),var(--max));margin-inline:auto}h1,h2,h3,p{overflow-wrap:anywhere}h2{font-size:var(--h2)}h3{font-size:var(--h3)}button{cursor:pointer}
.site-header{position:sticky;top:0;z-index:30;background:#fff;border-bottom:1px solid var(--line)}.nav-shell{min-height:var(--header-h);display:flex;align-items:center;gap:var(--s3)}.brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-size:var(--small);font-weight:700;white-space:nowrap;flex:none}.nav-shell button,.nav-shell a{font-size:var(--small)}.brand img{width:34px;height:34px}.primary-nav{display:flex;align-items:center;gap:6px;margin-left:auto}.primary-nav a,.mobile-drawer a{padding:7px 10px;border-radius:var(--radius-sm);text-decoration:none;font-size:var(--small);font-weight:600}.primary-nav a:hover,.primary-nav a[aria-current]{background:#f2f3f5;color:var(--ink)}.nav-actions{display:flex;align-items:center;gap:var(--s1)}.nav-button,.button{min-height:42px;padding:9px 16px;border:1px solid transparent;border-radius:var(--radius-control);display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;font-weight:650;background:var(--brand);color:#2d2500}.nav-button:hover,.button:hover{background:#e9bd00;color:#221c00}.button-light{background:#fff;color:var(--ink);border-color:var(--line)}.button-light:hover{background:var(--soft);color:var(--ink)}.button-dark{background:var(--night);color:#fff}.button-dark:hover{background:#242b38;color:#fff}.lang-switch{position:relative;flex:none}.lang-button{height:42px;padding:0 12px;border:1px solid var(--line);border-radius:var(--radius-control);background:#fff;color:var(--ink);display:flex;align-items:center;gap:8px;font-size:var(--small);font-weight:600;white-space:nowrap}.lang-button:hover{background:var(--soft);color:var(--ink)}.lang-button svg{width:18px;height:18px}.lang-menu{position:absolute;top:calc(100% + 8px);right:0;z-index:35;width:176px;padding:8px;background:#fff;color:var(--ink);border:1px solid var(--line);border-radius:var(--radius-control);box-shadow:0 12px 30px rgba(17,24,39,.10)}.lang-menu a{display:block;padding:8px 10px;border-radius:8px;text-decoration:none;font-size:var(--small)}.lang-menu a:hover,.lang-menu a[aria-current]{background:#fff5bd;color:#302700}.lang-menu a[aria-current]::after{content:"";float:right;width:8px;height:4px;border-left:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(-45deg) translateY(5px)}.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:var(--radius-control);background:#fff;place-items:center;padding:0}.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{display:block;width:18px;height:2px;background:var(--ink);content:""}.nav-toggle span::before{transform:translateY(-6px)}.nav-toggle span::after{transform:translateY(4px)}.mobile-drawer{padding:12px 20px 20px;background:#fff;border-top:1px solid var(--line);display:grid;gap:6px}.mobile-drawer .nav-create{margin-top:6px;background:var(--brand)}
.hero{padding:var(--s5) 0 var(--s4)}.hero-stage{min-height:350px;padding:var(--s5);border-radius:var(--radius-stage);background:var(--night);color:#fff;display:grid;grid-template-columns:minmax(0,4fr) minmax(0,6fr);gap:var(--s5);align-items:center}.hero-copy{min-width:0}.hero-face{width:82px;height:82px;border-radius:24px;background:var(--brand);display:grid;place-items:center;margin-bottom:var(--s4)}.hero-face svg{width:58px;height:58px}.eyebrow,.page-kicker{display:flex;width:max-content;min-width:0;max-width:calc(100vw - 40px);margin:0 0 20px;padding:5px 10px;border-radius:999px;background:#fff4b8;color:#3e3300;font-size:var(--micro);font-weight:700}.eyebrow+h1,.eyebrow+h2,.page-kicker+h1{margin-top:20px}.hero h1{font-size:var(--h1);line-height:1.12;letter-spacing:0;font-weight:700;margin:0;max-width:610px}.hero-stage h1+p{margin:20px 0 0;color:#c4c9d2;font-size:18px}.stage-feed{min-width:0;padding:var(--s2);border:1px solid #343b49;border-radius:var(--radius-card);background:#131925}.stage-row{min-width:0;display:grid;grid-template-columns:10px minmax(0,1fr) auto;align-items:center;gap:var(--s2);padding:12px}.stage-row+.stage-row{border-top:1px solid #2b3240}.stage-row strong,.stage-row small{display:block}.stage-row strong{font-size:14px}.stage-row small{color:#9ba3b2;font-size:11px}.dot{width:9px;height:9px;border-radius:50%;display:block}.orange{background:#ff9d00}.blue{background:#4ea1ff}.violet{background:#8c73ff}.red{background:#ff624d}.tag{padding:3px 8px;border-radius:999px;background:#2a3140;color:#d7dbe3;font-size:11px}
.workspace-section{padding:0 0 var(--s7)}.tool-tabs{display:flex;gap:var(--s2);margin-bottom:var(--s3)}.tool-tabs .button{flex:0 1 190px}.tool-tabs [aria-selected="true"]{background:var(--night);color:#fff}.mail-workbench{height:740px;min-height:628px;border-radius:var(--radius-stage);background:var(--night);color:#fff;padding:var(--s4);display:flex;flex-direction:column;gap:var(--s4)}.mail-toolbar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:var(--s2);align-items:stretch}.address-bar{min-width:0;display:flex;align-items:stretch;background:#171d29;border:1px solid #333b4b;border-radius:var(--radius-control);overflow:hidden}.address-bar input{flex:1;min-width:0;height:52px;border:0;border-radius:0;padding:0 16px;background:transparent;color:#fff;font-size:18px;font-weight:650}.address-bar input:focus{outline:none;border:0}.address-bar:focus-within{border-color:#fff}.address-bar button,.mail-actions button{min-height:52px;border:0;border-left:1px solid #333b4b;background:#202735;color:#fff;padding:0 18px;font-weight:650}.address-bar button:hover,.mail-actions button:hover{background:#323b4b;color:#fff}.mail-actions{display:flex;gap:8px}.mail-actions button{border:1px solid #333b4b;border-radius:var(--radius-control)}.workbench-status{display:flex;align-items:center;justify-content:space-between;gap:var(--s3);font-size:var(--small);color:#b9c0cc}.status-live{display:inline-flex;align-items:center;gap:8px;color:#fff}.status-live::before{content:"";width:8px;height:8px;border-radius:50%;background:#39c47c}.inbox-grid{min-height:0;flex:1;display:grid;grid-template-columns:minmax(260px,34%) minmax(0,1fr);border:1px solid #303746;border-radius:var(--radius-card);overflow:hidden;background:#141a25}.message-list,.reader-pane{min-width:0;min-height:0;overflow:auto;background:#141a25;color:#fff}.message-list{border-right:1px solid #303746}.list-head{padding:18px 20px;display:flex;align-items:end;justify-content:space-between;gap:12px}.list-head h2{font-size:22px;line-height:1.2;margin:0}.list-head span{font-size:12px;color:#aeb6c3}.message-row{width:100%;min-width:0;padding:15px 18px;border:0;border-top:1px solid #303746;background:#141a25;color:#fff;display:grid;grid-template-columns:10px minmax(0,1fr) auto;gap:12px;text-align:left;align-items:start}.message-row:hover,.message-row[aria-selected="true"]{background:#202735;color:#fff}.message-row>span:nth-child(2),.sender,.subject,.preview{min-width:0;display:block}.sender{font-size:13px;font-weight:700}.subject{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.preview{font-size:12px;color:#9ea7b5;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.message-row time{font-size:11px;color:#9ea7b5}.reader-pane{display:flex;flex-direction:column}.reader-inner{padding:24px 26px;min-width:0}.reader-head{padding-bottom:18px;border-bottom:1px solid #303746}.reader-head h2{font-size:22px;line-height:1.3;margin:0}.reader-meta{margin-top:8px;color:#aeb6c3;font-size:13px}.mail-demo{margin-top:24px;border-radius:var(--radius-card);overflow:hidden;background:#fff;color:var(--ink)}.demo-brand-head{padding:16px 20px;display:flex;align-items:center;gap:12px;color:#fff}.demo-brand-head.zoom{background:#2d6cdf}.demo-brand-head.github{background:#24292f}.demo-brand-head svg{width:34px;height:34px}.demo-body{padding:24px}.demo-body h3{font-size:22px;margin:0 0 12px}.code-card,.notice-card{margin:20px 0;padding:18px;border-radius:12px;background:#f3f4f6}.code-card{font:700 28px/1.2 ui-monospace,SFMono-Regular,monospace;letter-spacing:5px;text-align:center}.fake-action{display:flex;width:max-content;max-width:100%;padding:10px 16px;border-radius:10px;background:var(--night);color:#fff;font-weight:700}.demo-disclaimer{margin:24px 0 0;padding-top:16px;border-top:1px solid var(--line);color:var(--muted);font-size:13px}.mail-frame{width:100%;min-width:0;max-width:100%;border:0;background:#fff;flex:0 0 auto}.inline-note{display:flex;width:max-content;max-width:100%;margin:16px 0 0;padding:9px 12px;border-radius:10px;background:#fff4b8;color:#473900;font-size:13px}
.content-section{padding:var(--s7) 0}.content-section.compact{padding-top:var(--s6)}.section-head{text-align:center;max-width:720px;margin:0 auto var(--s5)}.section-head .eyebrow{margin-left:auto;margin-right:auto}.section-head h2{line-height:1.2;margin:0}.section-head h2+p,.section-intro{margin:20px auto 0;color:var(--muted)}.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--s4);align-items:start}.info-card{min-width:0;padding:var(--s4);border:1px solid var(--line);border-radius:var(--radius-card);background:#fff}.feature-mark{width:42px;height:42px;border-radius:12px;display:grid;place-items:center;background:#fff4b8;margin-bottom:var(--s3)}.feature-mark svg{width:22px;height:22px}.info-card h3{font-size:var(--h3);line-height:1.3;margin:0}.info-card p{margin:12px 0 0;color:var(--muted)}.scenario-strip{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--s3)}.scenario{padding:20px;border:1px solid #eadf9c;border-radius:var(--radius-card);background:#fffbea}.scenario p{margin:8px 0 0;color:#5f5a43;font-size:var(--small)}.split-feature{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s4)}.feature-panel{padding:var(--s5);border-radius:var(--radius-stage);background:var(--soft)}.feature-panel.dark{background:var(--night);color:#fff}.feature-panel h2{margin:0;font-size:30px;line-height:1.2}.feature-panel p{margin:16px 0 0;color:var(--muted)}.feature-panel.dark p,.feature-panel.dark li{color:#c7ccd5}.mini-list{margin:24px 0 0;padding-left:20px}.mini-list li+li{margin-top:8px}.faq-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--s3);align-items:start}.faq-grid details{border:1px solid var(--line);border-radius:var(--radius-card);background:#fff}.faq-grid summary{padding:18px 48px 18px 20px;cursor:pointer;font-weight:700;position:relative;list-style:none}.faq-grid summary::-webkit-details-marker{display:none}.faq-grid summary::after{content:"";position:absolute;right:20px;top:50%;width:8px;height:8px;border-right:2px solid var(--ink);border-bottom:2px solid var(--ink);transform:translateY(-70%) rotate(45deg)}.faq-grid details[open] summary::after{transform:translateY(-20%) rotate(225deg)}.faq-grid details p{margin:0;padding:0 20px 18px;color:var(--muted)}.pre-footer{padding:0 0 var(--s6)}.pre-footer-card{padding:var(--s5);border-radius:var(--radius-stage);background:var(--brand);display:flex;align-items:center;justify-content:space-between;gap:var(--s4)}.pre-footer-card h2{font-size:30px;line-height:1.2;margin:0}.pre-footer-card p{margin:8px 0 0;color:#524500}
.site-footer{background:var(--night);color:#fff;padding:var(--s6) 0}.footer-layout{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:var(--s5)}.footer-languages{display:flex;align-items:center;flex-wrap:wrap;gap:8px 18px;grid-column:1/-1;order:-1;padding-bottom:var(--s4);border-bottom:1px solid #303746;margin-bottom:var(--s2)}.footer-languages span{color:#9fa7b4;font-size:13px}.footer-languages a{color:#c8cdd6;font-size:var(--small)}.footer-languages a:hover{color:var(--brand)}.footer-languages a[aria-current]{color:var(--brand);font-weight:700}.footer-five{grid-template-columns:minmax(180px,1.2fr) repeat(3,minmax(110px,1fr));grid-template-areas:"brand tools learn site"}.footer-five .footer-brand{grid-area:brand}.footer-five .footer-column:nth-of-type(2){grid-area:tools}.footer-five .footer-column:nth-of-type(3){grid-area:learn}.footer-five .footer-column:nth-of-type(4){grid-area:site}.footer-brand p{color:#aeb5c1;max-width:320px}.emoji-pile{font-size:24px;letter-spacing:7px}.footer-column{display:grid;align-content:start;gap:9px}.footer-column strong{margin-bottom:4px}.footer-column a{color:#c8cdd6;text-decoration:none;font-size:var(--small)}.footer-column a:hover{color:var(--brand)}.footer-bottom{margin-top:var(--s5);padding-top:var(--s4);border-top:1px solid #303746;display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;color:#9fa7b4;font-size:13px}
input,textarea{border:1px solid #4b5563;border-radius:var(--radius-control);min-height:44px;padding:0 14px;background:#171d29;color:#fff}textarea{padding-block:12px}input:focus,textarea:focus{outline:none;border-color:var(--ink);box-shadow:none}.prose table,.data-table{width:100%;border-collapse:collapse;font-size:14px}.prose th,.prose td,.data-table th,.data-table td{padding:13px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}.prose th,.data-table th{background:#f6f7f8;font-size:12px}.table-scroll{min-width:0;overflow-x:auto}.empty-state{margin-top:24px;padding:20px;border:1px dashed #cbd0d8;border-radius:var(--radius-card);background:#fafafa;color:var(--muted)}.toast{position:fixed;z-index:80;left:50%;bottom:24px;transform:translate(-50%,18px);width:max-content;max-width:min(430px,calc(100% - 32px));padding:11px 16px;border-radius:16px;background:var(--night);color:#fff;opacity:0;pointer-events:none;transition:opacity .18s,transform .18s}.toast.show{opacity:1;transform:translate(-50%,0)}
.relay-main{padding:56px 0 88px;background:#fff}.access-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:36px}.relay-head h1{margin:16px 0 0;font-size:38px;line-height:1.14}.relay-head p{max-width:720px;margin:16px 0 0;color:var(--muted)}.auth-step-list{margin-top:20px;display:flex;flex-wrap:wrap;gap:10px}.auth-step-list span{padding:9px 13px;border-radius:999px;background:#f1f3f7;color:#5a6272;font-size:13px;font-weight:600}.auth-step-list span[aria-current]{background:var(--brand);color:#2d2500}.access-sheet{width:min(620px,100%);padding:32px;border:1px solid var(--line);border-radius:24px;background:#fff;box-shadow:0 14px 40px rgba(15,20,30,.06)}.access-sheet h2{margin:0;font-size:24px}.auth-copy{margin:12px 0 24px;color:var(--muted)}.auth-notice{margin-bottom:24px;padding:12px 14px;border-radius:12px;background:#f4f5f6;color:#4b5563}.auth-notice.is-error{background:#fff0ef;color:#8f2822}.auth-notice.is-success{background:#eaf8f0;color:#145d39}.field-stack{display:grid;gap:8px}.field-stack+*{margin-top:24px}.field-stack label{font-size:14px;font-weight:700}.field-stack input{width:100%}.auth-actions,.form-actions{display:flex;align-items:center;flex-wrap:wrap;gap:10px;margin-top:24px}.auth-actions .button,.form-actions .button{min-height:44px}.console-view{display:grid;gap:32px}.session-surface{padding:24px;border-radius:24px;background:var(--brand);display:flex;align-items:center;justify-content:space-between;gap:20px}.session-surface p{margin:4px 0 0}.session-email{font-weight:700;overflow-wrap:anywhere}.task-surface{min-width:0;padding:28px;border-radius:var(--radius-card)}.alias-section{border:1px solid var(--line);background:#fff}.archive-section{background:#f5f6f7}.twofa-section{background:var(--night);color:#fff;border-radius:24px}.task-surface h2{font-size:24px;line-height:1.25;margin:0}.task-surface>p{margin:12px 0 0;color:var(--muted)}.twofa-section>p{color:#c5cad3}.alias-compose{margin-top:20px;display:flow-root}.composer{display:flex;align-items:stretch;border:1px solid #cfd4da;border-radius:12px;background:#fff;overflow:hidden}.composer:focus-within{border-color:var(--ink)}.composer input{flex:1;min-width:0;border:0;border-radius:0}.composer input:focus{outline:none;border:0}.composer-suffix{flex:none;display:flex;align-items:center;padding:0 14px;background:#f3f4f6;border-left:1px solid var(--line);font-size:13px}.alias-compose .form-actions{margin-bottom:40px}.console-empty{margin-top:24px}.alias-table{margin-top:40px}.row-actions{display:flex;flex-wrap:wrap;gap:8px}.row-actions button,.console-ctrl{min-height:36px;padding:7px 11px;border:1px solid #d2d6dc;border-radius:9px;background:#fff;color:var(--ink);font-weight:650}.row-actions button:hover,.console-ctrl:hover{background:#fff4b8;color:#302700}.archive-head{display:flex;align-items:center;justify-content:space-between;gap:20px}.filter-wrap{position:relative;margin-top:16px;width:max-content;max-width:100%}.filter-trigger{position:relative;min-height:42px;padding:8px 44px 8px 14px;border:1px solid #cfd4da;border-radius:11px;background:#fff;color:var(--ink);font-weight:650}.filter-trigger::after{content:"";position:absolute;right:16px;top:50%;width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-70%) rotate(45deg)}.filter-menu{position:absolute;z-index:12;top:calc(100% + 8px);left:0;min-width:190px;padding:7px;border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:0 12px 30px rgba(17,24,39,.1)}.filter-menu button{width:100%;padding:9px 10px;border:0;border-radius:8px;background:#fff;color:var(--ink);text-align:left}.filter-menu button:hover,.filter-menu button[aria-selected="true"]{background:#fff4b8;color:#302700}.archive-list{margin-top:24px;display:grid;gap:1px;background:#d9dde2;border:1px solid #d9dde2;border-radius:14px;overflow:hidden}.archive-row{width:100%;padding:16px;border:0;background:#fff;color:var(--ink);display:grid;grid-template-columns:minmax(0,1fr) auto;gap:20px;text-align:left}.archive-row:hover{background:#fffbea;color:var(--ink)}.archive-row strong,.archive-row span{display:block}.archive-row-meta{display:flex;align-items:center;gap:10px;white-space:nowrap}.status-pill,.lock-badge{display:flex;width:max-content;max-width:100%;padding:5px 9px;border-radius:999px;background:#e8f5ed;color:#145d39;font-size:12px;font-weight:700}.archive-detail{margin-top:40px;min-width:0;max-width:100%;padding:24px;border:1px solid #d7dbe0;border-radius:14px;background:#fff}.archive-detail-head{display:flex;justify-content:space-between;gap:20px;padding-bottom:16px;border-bottom:1px solid var(--line)}.archive-detail h3{margin:0;font-size:22px}.attachment-list{margin-top:16px;display:grid;gap:8px}.attachment-list button{width:max-content;max-width:100%}.twofa-top{display:flex;align-items:start;justify-content:space-between;gap:20px}.twofa-section .lock-badge{margin-top:20px;background:#353d4c;color:#fff}.twofa-timeline{margin-top:24px;display:grid;gap:10px}.twofa-timeline div{padding-left:18px;border-left:1px solid #596273;color:#d1d5dc}.twofa-setup{margin-top:24px;padding:24px;border-radius:14px;background:#1a2130}.twofa-setup img{display:block;width:180px;height:180px;padding:10px;border-radius:12px;background:#fff}.secret-line{margin-top:12px;display:flex;align-items:center;flex-wrap:wrap;gap:10px}.twofa-code{margin-top:16px;display:grid;gap:8px}.twofa-code input{max-width:260px;background:#111724;border-color:#424b5b;color:#fff}.twofa-confirm{margin-top:24px}.twofa-disable{margin-top:24px;padding-top:24px;border-top:1px solid #353d4c}.dialog-backdrop{position:fixed;inset:0;z-index:70;display:grid;place-items:center;padding:20px;background:rgba(11,15,25,.58)}.dialog{width:min(440px,100%);padding:24px;border-radius:16px;background:#fff;color:var(--ink)}.dialog h2{font-size:22px;margin:0}.dialog p{color:var(--muted)}.dialog-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:24px}
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.alias-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap}
.alias-head h2{margin:0}
.alias-head p{margin:10px 0 0;color:var(--muted);max-width:640px}
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.usage-pill strong{font-size:15px}
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.twofa-setup .twofa-code{grid-column:2;margin-top:14px}
.twofa-setup .twofa-confirm{grid-column:2;justify-self:start;margin-top:14px}
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.secret-line .console-ctrl{margin-top:10px}
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