:root{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:#192b38;background:#f4f6f8;font-synthesis:none;--ink:#192b38;--muted:#586b79;--accent:#176b5b;--line:#dce3e8}
*{box-sizing:border-box}body{margin:0}button,input{font:inherit}button{cursor:pointer;min-height:42px;padding:10px 15px;border:1px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);white-space:nowrap;font-size:14px;font-weight:550}button:hover{background:#edf2f4}button:disabled{opacity:.55;cursor:wait}button:focus-visible,input:focus-visible{outline:3px solid #4d9e8c;outline-offset:3px}input{min-width:0;width:100%;border:1px solid #b9c7d0;border-radius:10px;min-height:44px;padding:11px 12px;background:#fff;color:var(--ink);font-size:14px}input::placeholder{color:#687987}label{display:block;font-size:13px;font-weight:600;margin-bottom:9px}h1,h2,h3,p{margin:0}h1{font-size:26px;letter-spacing:-.02em;line-height:1.4}h2{font-size:21px;line-height:1.5}h3{font-size:17px;line-height:1.5}.primary{background:var(--accent);color:#fff;border-color:transparent}.primary:hover{background:#0d5748}.quiet{border-color:transparent;background:transparent;color:var(--muted)}.quiet:hover{background:#e9eff2;color:var(--ink)}.icon-button{font-size:23px;min-width:42px;padding:4px;border:0;background:transparent}.muted,.helper{color:var(--muted)}.helper{font-size:13px;line-height:1.7}.eyebrow{font-size:12px;font-weight:600;color:var(--muted);line-height:1.5}.brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:10px;background:var(--accent);color:#fff;font-size:24px;font-family:Georgia,serif;font-style:italic;flex-shrink:0}[hidden]{display:none!important}.app{display:grid;grid-template-columns:218px minmax(0,1fr);height:100dvh;min-height:500px}.sidebar{padding:32px 20px 20px;background:#edf1f4;border-right:1px solid var(--line);display:flex;flex-direction:column}.brand{display:flex;gap:10px;align-items:center;margin-bottom:42px}.brand strong{display:block;font-size:17px}.brand div>span{display:block;font-size:11px;letter-spacing:.02em;color:var(--muted);margin-top:4px}.sidebar nav{display:grid;gap:8px}.nav-button{text-align:left;border:0;background:transparent;color:var(--muted);min-height:46px}.nav-button>span{font-size:20px;margin-right:10px;vertical-align:-1px}.nav-button.active{background:#dcebe5;color:#155b4d}.sidebar-bottom{margin-top:auto;font-size:12px;line-height:1.9;color:var(--muted)}.sidebar-bottom p+p{margin-top:14px}.sidebar-bottom button{margin-top:22px;padding-left:0}main{min-width:0;display:flex;flex-direction:column;overflow:hidden}.topbar{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:28px 32px 24px;background:#fff;border-bottom:1px solid var(--line)}.topbar h1{margin-top:3px}.top-actions{display:flex;align-items:center;gap:20px}.sync-status{font-size:12px;color:var(--muted)}.sync-status::before{content:"";display:inline-block;width:6px;height:6px;margin-right:7px;border-radius:50%;background:#688c7f}.inbox-layout{display:grid;grid-template-columns:360px minmax(0,1fr);flex:1;min-height:0}.mail-column{display:flex;flex-direction:column;min-height:0;background:#fafbfc;border-right:1px solid var(--line)}.list-tools{padding:24px 22px 8px;border-bottom:1px solid var(--line)}.input-row{display:flex;gap:8px}.filter-button{padding:8px 12px}.list-summary{display:flex;align-items:center;justify-content:space-between;margin-top:12px;color:var(--muted);font-size:12px}.list-summary button{font-size:12px;padding-right:0}.mail-list{overflow:auto;flex:1}.mail-row{width:100%;min-height:130px;text-align:left;border:0;border-radius:0;border-bottom:1px solid var(--line);background:transparent;padding:18px 22px;white-space:normal;position:relative;display:block;font-weight:400}.mail-row:hover{background:#f0f5f3}.mail-row.selected{background:#e8f1ed}.mail-row.selected::before{content:"";position:absolute;left:8px;top:23px;width:5px;height:5px;background:var(--accent);border-radius:50%}.row-top{display:flex;justify-content:space-between;gap:14px;font-size:12px;color:var(--muted);margin-bottom:9px}.row-address{overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.row-time{flex-shrink:0}.row-subject{display:block;font-size:14px;line-height:1.5;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:650}.mail-row.read .row-subject{font-weight:450}.row-preview{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-height:1.6;font-size:12px;color:var(--muted);margin-top:7px;overflow-wrap:anywhere}.load-more{margin:12px 20px}.list-empty{padding:44px 24px;text-align:center}.list-empty h2{font-size:16px;margin-bottom:9px}.list-empty p{font-size:13px;line-height:1.8;color:var(--muted)}.detail{background:#fff;overflow:auto;min-width:0}.detail-empty{min-height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;text-align:center}.empty-symbol{font-size:40px;color:#688c7f;margin-bottom:20px;font-weight:300}.detail-empty h2{font-size:20px;margin-bottom:12px}.detail-empty p{font-size:14px;line-height:1.85;color:var(--muted)}.quiet-note{font-size:12px;color:var(--muted);margin-top:48px}.detail-toolbar{padding:12px 30px;border-bottom:1px solid var(--line);display:flex;justify-content:flex-end;gap:8px}.back-button{display:none;margin-right:auto}.message-content{padding:32px 36px 48px;max-width:940px;margin:0 auto}.message-title{font-size:24px;font-weight:650;overflow-wrap:anywhere;line-height:1.5}.message-meta{margin:20px 0 30px;display:grid;grid-template-columns:58px minmax(0,1fr);row-gap:9px;font-size:12px;line-height:1.6}.message-meta dt{color:var(--muted)}.message-meta dd{margin:0;overflow-wrap:anywhere}.message-body{font-family:inherit;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.95;color:#293f4d;margin:0;max-width:75ch}.message-foot{margin-top:40px;padding-top:18px;border-top:1px solid var(--line);font-size:12px;color:var(--muted)}.address-panel{display:flex;align-items:center;gap:12px;padding:18px 30px;background:#edf7f2;border-bottom:1px solid #cfe1d8}.address-panel>div{margin-right:auto;min-width:0}.address-panel strong{display:block;font-size:16px;margin:5px 0;overflow-wrap:anywhere}.address-panel .muted{font-size:12px}.error-banner{padding:12px 30px;color:#8b352d;background:#fff1ed;font-size:13px}.error{color:#963c31;font-size:13px;line-height:1.6}.api-view{padding:36px 40px 60px;overflow:auto;background:#fff;flex:1}.api-view>*{max-width:760px}.api-view h2{font-size:28px;margin:10px 0 14px}.api-view p{font-size:14px;line-height:1.85;color:var(--muted)}.steps{padding-left:20px;margin-top:22px;margin-bottom:30px;font-size:14px;line-height:2.2}.api-view code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;overflow-wrap:anywhere}.code-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;border:1px solid var(--line);border-bottom:0;padding:8px 18px;border-radius:12px 12px 0 0;font-size:13px}.api-view pre{margin:0 0 28px;background:#f1f4f6;padding:22px;border:1px solid var(--line);border-radius:0 0 12px 12px;overflow:auto;font-size:12px;line-height:1.9}.api-note{padding:0 0 24px}.api-note strong{font-size:14px}.api-note p{margin-top:6px}.api-view table{width:100%;border-collapse:collapse;font-size:13px;margin:0 0 30px}.api-view th,.api-view td{text-align:left;padding:13px 12px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7}.api-view th{background:#f6f8f9;font-size:12px}.api-view h3{margin:26px 0 10px}.api-view p+p{margin-top:12px}.toast{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);z-index:5;background:#213c34;color:#fff;border-radius:12px;padding:9px 17px;min-height:44px;display:flex;align-items:center;gap:18px;font-size:13px;box-shadow:0 8px 28px #172b3826;max-width:90vw}.toast button{color:#fff;background:transparent;border:0;text-decoration:underline;min-height:32px;padding:4px}.login-screen{min-height:100dvh;position:relative;background:#f3f6f4;padding:46px 6vw 36px}.login-brand{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:600}.login-form{max-width:380px;margin:7vh auto 8vh}.login-form h1{font-size:48px;line-height:1.3;letter-spacing:-.035em;margin:16px 0 20px}.intro{font-size:15px;color:var(--muted);line-height:1.8;margin-bottom:38px}.login-form .primary{width:100%;margin:16px 0 20px;display:flex;justify-content:space-between;align-items:center}.login-form .error{margin-top:10px}.login-foot{font-size:12px;text-align:center;color:var(--muted)}
@media(max-width:1100px){.app{grid-template-columns:182px minmax(0,1fr)}.sidebar{padding:28px 14px 20px}.brand strong{font-size:15px}.inbox-layout{grid-template-columns:320px minmax(0,1fr)}.topbar{padding:24px}.sync-status{display:none}.message-content{padding:28px 24px}.address-panel .helper{display:none}}
@media(max-width:800px){.app{grid-template-columns:1fr;height:100dvh}.sidebar{padding:12px 18px;flex-direction:row;align-items:center;border-right:0;border-bottom:1px solid var(--line);gap:20px}.brand{margin:0;flex:1}.brand div>span{display:none}.brand-mark{width:30px;height:30px;font-size:21px}.sidebar nav{display:flex;gap:4px}.nav-button{padding:8px 10px;font-size:12px;min-height:40px}.nav-button>span{display:none}.sidebar-bottom{margin:0}.sidebar-bottom p{display:none}.sidebar-bottom button{margin:0;font-size:12px;padding:8px}.app{grid-template-rows:auto minmax(0,1fr)}.topbar{padding:20px}.topbar h1{font-size:23px}.top-actions button{font-size:12px;padding:10px}.inbox-layout{display:block}.mail-column{height:100%;border-right:0}.detail{display:none;height:100%}.inbox-layout.detail-open .mail-column{display:none}.inbox-layout.detail-open .detail{display:block}.back-button{display:block}.detail-toolbar{padding:8px 16px}.message-content{padding:24px 22px}.message-title{font-size:22px}.address-panel{padding:14px 20px;flex-wrap:wrap;gap:8px}.address-panel>div{width:100%}.address-panel .icon-button{margin-left:auto}.api-view{padding:26px 22px 50px}.api-view h2{font-size:23px}.api-view th,.api-view td{padding:11px 7px}.list-tools{padding-top:18px}.mail-row{min-height:126px}.login-screen{padding:30px 24px}.login-form{margin:8vh auto}.login-form h1{font-size:42px}}
@media(prefers-reduced-motion:no-preference){.address-panel{animation:reveal .25s cubic-bezier(.16,1,.3,1)}@keyframes reveal{from{clip-path:inset(0 0 100% 0)}to{clip-path:inset(0)}}}