@font-face{font-family:systemfallback;src:local("Microsoft YaHei")}
:root{color-scheme:light;--ink:#1c2937;--muted:#77838f;--line:#e9edef;--soft:#f6f8f9;--green:#188963;--green-dark:#11664c;--pale:#eaf6ef;--font:Inter,"Segoe UI",systemfallback,"PingFang SC",system-ui,sans-serif}
*{box-sizing:border-box}body{margin:0;font:14px/1.6 var(--font);color:var(--ink);background:#fff}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}a{color:inherit;text-decoration:none}button{cursor:pointer;border:0;background:none;color:inherit}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible{outline:3px solid #8dd0b8;outline-offset:3px}input,textarea,select{color:var(--ink);border:1px solid #dde4e7;background:white;padding:12px 14px;border-radius:9px;outline:none;min-width:0}input:focus,textarea:focus{border-color:#4caf89;box-shadow:0 0 0 3px #18896312}textarea{resize:vertical}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.3}img{max-width:100%}.muted{color:var(--muted)}.tiny{font-size:12px}.eyebrow{font-size:11px;letter-spacing:.16em;text-transform:uppercase;font-weight:700;color:var(--green)}.brand{display:flex;align-items:center;gap:11px;font-weight:750;font-size:19px;letter-spacing:-.4px}.brand img{width:32px;height:32px;object-fit:contain}.brand small{font-weight:400;color:#8d969e;font-size:11px;display:block;letter-spacing:1px;line-height:1.2}.primary{background:var(--green);color:white;padding:11px 22px;border-radius:8px;font-weight:600}.primary:hover{background:var(--green-dark)}.secondary{border:1px solid #dce4e4;background:white;padding:10px 20px;border-radius:8px}.secondary:hover{background:var(--soft)}.danger{color:#ba3c48}.danger.primary{background:#bb3e4c;color:white}.icon-button{width:36px;height:36px;display:inline-flex;align-items:center;justify-content:center;border-radius:8px;font-size:20px}.icon-button:hover{background:#edf2f1}.initial-loading{display:grid;min-height:100vh;place-content:center;color:var(--muted)}
.site-nav{height:88px;display:flex;align-items:center;justify-content:space-between;gap:30px;max-width:1220px;margin:auto;padding:0 40px}.site-nav .links{display:flex;align-items:center;gap:30px;color:#65727c}.site-nav .links a:hover{color:var(--green)}.hero{max-width:1220px;margin:auto;padding:90px 40px 95px;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:64px}.hero h1{font-size:56px;letter-spacing:-2px;font-weight:750;line-height:1.25;margin:20px 0}.hero h1 span{color:var(--green)}.hero .lead{font-size:17px;line-height:1.9;color:#6c7a85;max-width:440px}.hero-actions{display:flex;align-items:center;gap:18px;margin:30px 0 26px}.hero .note{font-size:12px;color:#88969d}.hero-demo{border:1px solid #e2e9e7;border-radius:18px;box-shadow:0 24px 80px #233b3210;overflow:hidden;transform:rotate(-2deg);background:white}.demo-bar{display:flex;align-items:center;padding:17px 20px;border-bottom:1px solid var(--line);gap:6px}.demo-bar i{width:7px;height:7px;border-radius:100%;background:#d7e1dc}.demo-bar span{font-size:11px;color:#8c9993;margin-left:14px}.demo-main{display:flex;height:325px}.demo-side{width:110px;background:#f5f8f6;padding:22px 14px;border-right:1px solid var(--line)}.demo-row{background:#e4efe8;height:39px;border-radius:6px;margin-bottom:15px}.demo-row:nth-child(2){background:#eef1ef}.demo-row:nth-child(3){background:#eef1ef;width:72%}.demo-convo{flex:1;padding:25px 22px;display:flex;flex-direction:column;gap:21px}.demo-heading{border-bottom:1px solid var(--line);padding-bottom:15px;font-weight:600;font-size:13px}.demo-bubble{border:1px solid #edf0ee;background:#f7f9f7;border-radius:3px 12px 12px;max-width:88%;padding:12px;font-size:12px}.demo-bubble.own{background:#e4f5e8;align-self:flex-end;border-radius:12px 3px 12px 12px}.demo-status{align-self:center;color:#8a9d90;font-size:10px}.demo-label{text-align:right;font-size:11px;color:#a2aaa6;margin-top:18px}
.section{max-width:1220px;margin:auto;padding:65px 40px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:36px}.section h2{font-size:28px;letter-spacing:-.8px;margin:10px 0}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:40px}.feature{border-top:1px solid #dce8e1;padding-top:27px}.feature .n{color:#65a58b;font-size:12px;font-weight:700}.feature h3{margin:14px 0 10px;font-size:17px}.feature p{color:var(--muted);font-size:13px}.soft-section{background:#f6f9f7}.article-list{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.article-card{padding:26px;border:1px solid var(--line);background:white;border-radius:10px}.article-card:hover{border-color:#a2c6b8}.article-card time{font-size:11px;color:#94a198}.article-card h3{font-size:17px;margin:15px 0 25px}.article-card span{color:var(--green);font-size:12px}.site-footer{border-top:1px solid var(--line);padding:30px 40px;display:flex;gap:24px;justify-content:space-between;color:#8b979b;font-size:12px;flex-wrap:wrap}.footer-links{display:flex;gap:22px;flex-wrap:wrap}.article-page{max-width:780px;margin:70px auto 110px;padding:0 28px}.article-page h1{font-size:35px;margin:25px 0}.article-body{white-space:pre-wrap;overflow-wrap:anywhere;line-height:2;color:#52616d;margin:35px 0}.empty{padding:40px 22px;text-align:center;color:#8b969f}.empty .big-symbol{font-size:42px;margin-bottom:14px;color:#a9c2b5}.empty h3{color:#43554d;font-size:18px;font-weight:500}.empty p{font-size:13px}.full-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;background:#fbfcfc;min-width:0}
.modal-shade{position:fixed;inset:0;background:#102b2545;backdrop-filter:blur(4px);display:grid;place-items:center;z-index:20;padding:22px}.modal{background:white;width:460px;max-width:100%;border-radius:16px;box-shadow:0 30px 100px #0d211c30;max-height:92vh;overflow:auto;padding:30px}.modal.wide{width:680px}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.modal-header h2{font-size:23px;margin:0}.modal form,.stack{display:flex;flex-direction:column;gap:15px}.modal label,.settings-form label{font-size:12px;font-weight:600;display:flex;flex-direction:column;gap:7px}.form-row{display:flex;gap:10px;align-items:center}.form-row>*{min-width:0}.form-row input{flex:1;width:50px}.form-row .secondary{white-space:nowrap;padding:11px 14px}.captcha-img{width:136px;height:44px;object-fit:contain;cursor:pointer;background:#edf4f4;border-radius:8px}.auth-tabs{display:flex;gap:7px;padding:4px;background:var(--soft);border-radius:9px;margin-bottom:22px}.auth-tabs button{flex:1;padding:9px;border-radius:7px;color:#839087}.auth-tabs button.active{background:white;box-shadow:0 1px 4px #143c1d10;color:var(--green);font-weight:600}.form-error{font-size:12px;color:#b93946;background:#fff3f3;border-radius:6px;padding:10px;white-space:pre-wrap}.form-error:empty{display:none}.auth-notice{color:#8a959b;font-size:11px;margin:2px 0;line-height:1.8}.form-bottom{text-align:center;font-size:12px;color:#7d8990}.text-link{color:var(--green)}#toast{position:fixed;bottom:28px;left:50%;transform:translateX(-50%);z-index:100;background:#263b33;color:white;border-radius:9px;padding:12px 20px;max-width:90vw;box-shadow:0 5px 20px #182d2430;display:none;white-space:pre-wrap}
.chat-shell{height:100dvh;display:flex;min-height:440px;overflow:hidden;background:white}.app-rail{width:72px;flex-shrink:0;background:#f5f8f6;border-right:1px solid var(--line);display:flex;flex-direction:column;align-items:center;gap:15px;padding:24px 0 18px}.app-rail .rail-brand{margin-bottom:17px}.rail-brand img{width:32px;height:32px}.rail-action{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;color:#829089;position:relative}.rail-action:hover{background:#e9f0eb}.rail-action.active{color:var(--green);background:#e2f0e7}.rail-action svg{width:23px;height:23px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.rail-spacer{flex:1}.avatar{width:40px;height:40px;flex-shrink:0;border-radius:11px;background:#e4eee9;color:#43886b;display:flex;align-items:center;justify-content:center;font-weight:600;overflow:hidden;object-fit:cover}.avatar img{width:100%;height:100%;object-fit:cover}.avatar.small{width:32px;height:32px;border-radius:9px;font-size:12px}.avatar.large{width:72px;height:72px;border-radius:18px;font-size:25px}.avatar.group{background:#e9edf4;color:#6880a6}.list-pane{width:306px;flex-shrink:0;border-right:1px solid var(--line);display:flex;flex-direction:column;background:#fbfcfc}.list-head{padding:25px 22px 15px}.list-title{display:flex;justify-content:space-between;align-items:center;margin-bottom:19px}.list-title h2{font-size:21px;margin:0;letter-spacing:-.5px}.connection{display:inline-flex;align-items:center;gap:5px;font-size:10px;color:#8b9991}.connection i{height:5px;width:5px;border-radius:50%;background:#b9c1bd}.connection.online i{background:#49ad7f}.connection.online{color:#569478}.search-box{position:relative}.search-box input{width:100%;background:#f0f3f2;border:0;padding:10px 12px;font-size:12px}.list-tabs{display:flex;padding:0 22px 14px;gap:20px;color:#8e9a93;font-size:12px}.list-tabs button{padding:3px 0}.list-tabs button.active{color:var(--green);font-weight:650;border-bottom:2px solid var(--green)}.conversation-list{overflow:auto;flex:1;padding:2px 10px 15px}.conversation-item{width:100%;display:flex;align-items:center;gap:12px;padding:15px 12px;border-radius:10px;text-align:left;margin-bottom:3px;position:relative}.conversation-item:hover{background:#f0f4f2}.conversation-item.active{background:#eaf3ed}.item-copy{flex:1;min-width:0}.item-top{display:flex;gap:5px;justify-content:space-between;align-items:center}.item-name{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.item-time{font-size:10px;color:#9aa79f;white-space:nowrap}.item-preview{font-size:11px;color:#93a097;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:5px;padding-right:14px}.unread{background:var(--green);color:white;position:absolute;right:16px;bottom:17px;border-radius:10px;font-size:9px;min-width:16px;height:16px;padding:0 4px;text-align:center}.list-footer{font-size:10px;padding:14px 22px;color:#abb3ad;border-top:1px solid var(--line)}
.chat-pane{flex:1;display:flex;flex-direction:column;min-width:0}.chat-header{height:86px;flex-shrink:0;border-bottom:1px solid var(--line);padding:19px 30px;display:flex;align-items:center;justify-content:space-between;gap:10px}.chat-header h2{font-size:17px;margin:0 0 3px;font-weight:600}.chat-header .meta{font-size:11px;color:#94a099}.chat-header .actions{display:flex;align-items:center;gap:10px;color:#728176}.message-list{flex:1;overflow:auto;overscroll-behavior:contain;background:#f8faf9;padding:24px 30px;display:flex;flex-direction:column;gap:20px;scroll-behavior:smooth}.message-row{display:flex;gap:11px;align-items:flex-start;max-width:84%;flex-shrink:0}.message-row.own{align-self:flex-end;flex-direction:row-reverse}.message-content{display:flex;flex-direction:column;min-width:0;align-items:flex-start}.message-row.own .message-content{align-items:flex-end}.message-author{font-size:10px;color:#93a097;margin:0 2px 6px}.bubble{padding:11px 15px;border:1px solid #e6ece8;border-radius:3px 12px 12px;background:white;overflow-wrap:anywhere;white-space:pre-wrap;font-size:13px;line-height:1.75;max-width:100%}.own .bubble{background:#dff1e4;border-color:#dff1e4;border-radius:12px 3px 12px 12px}.bubble img{max-width:260px;max-height:280px;display:block;border-radius:5px;cursor:pointer;object-fit:contain}.bubble video{max-width:310px;max-height:260px;display:block;border-radius:5px}.bubble audio{max-width:250px;height:38px}.message-time{font-size:9px;color:#abb6af;display:flex;gap:8px;margin:5px 2px 0;align-items:center}.message-time button{font-size:9px;padding:0;color:#9aa79d}.day-divider{font-size:10px;color:#a5b1aa;text-align:center;padding:5px;align-self:center}.composer{border-top:1px solid var(--line);padding:13px 25px 17px;background:white;flex-shrink:0}.composer-tools{display:flex;align-items:center;gap:5px;color:#86948a;margin-bottom:3px}.composer-tools .icon-button{width:31px;height:30px;font-size:17px}.composer textarea{border:0;box-shadow:none;padding:8px 4px;background:white;width:100%;min-height:75px;max-height:200px;resize:none;font-size:13px}.compose-bottom{display:flex;align-items:center;justify-content:space-between;color:#b0b9b3;font-size:10px}.compose-bottom .primary{font-size:12px;padding:8px 25px}.typing{font-size:10px;color:var(--green);height:16px}.contact-row{display:flex;align-items:center;gap:12px;padding:14px 0;border-bottom:1px solid var(--line)}.contact-row .copy{flex:1;min-width:0}.contact-row .copy strong{font-size:13px}.contact-row .copy p{margin:2px 0 0;color:#97a398;font-size:11px}.contact-row .secondary{font-size:11px;padding:7px 12px}.context-menu{display:flex;flex-direction:column;gap:5px}.context-menu button{text-align:left;padding:14px 16px;border-radius:8px;background:#f8faf9}.context-menu button:hover{background:#eaf3ed}.context-menu button span{display:block;color:#94a196;font-size:11px;margin-top:4px}.profile-head{display:flex;align-items:center;gap:20px;margin-bottom:24px}.profile-id{font-size:10px;color:#97a197;overflow-wrap:anywhere}.member-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(85px,1fr));gap:15px;max-height:260px;overflow:auto;padding:10px 0}.member-card{font-size:11px;display:flex;align-items:center;flex-direction:column;gap:6px;min-width:0}.member-card span{max-width:80px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.info-line{font-size:12px;padding:13px 0;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:10px}.recording{color:#c44b58;font-size:12px;margin-left:10px}.call-dialog{text-align:center}.call-dialog .avatar{margin:15px auto}.call-actions{display:flex;gap:16px;justify-content:center;margin-top:28px}.call-status{font-size:12px;color:var(--muted);margin:14px 0}.call-note{font-size:10px;color:#98a49c;margin-top:22px}.call-active-badge{background:#e5f4ea;color:var(--green);padding:7px 12px;border-radius:8px;font-size:11px;cursor:pointer}
.admin-shell{display:flex;min-height:100vh;background:#f7f9f8}.admin-sidebar{width:230px;background:white;border-right:1px solid var(--line);padding:30px 20px;display:flex;flex-direction:column;gap:9px;flex-shrink:0}.admin-sidebar .brand{font-size:17px;margin-bottom:30px}.admin-sidebar>button{padding:13px 16px;text-align:left;border-radius:8px;color:#7b8981}.admin-sidebar>button.active{background:var(--pale);color:var(--green);font-weight:600}.admin-sidebar .back-home{margin-top:40px;color:#9ba69f;font-size:12px}.admin-main{flex:1;min-width:0;padding:45px 50px;max-width:1300px}.admin-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:34px}.admin-top h1{font-size:27px;margin:0}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-bottom:30px}.stat{background:white;padding:24px;border:1px solid var(--line);border-radius:11px}.stat .value{font-size:29px;font-weight:650;margin-top:10px}.stat .label{font-size:11px;color:#96a097}.panel{background:white;border:1px solid var(--line);border-radius:12px;padding:25px;margin-bottom:25px}.panel h3{font-size:16px;margin-bottom:20px}.table-scroll{overflow:auto}table{width:100%;border-collapse:collapse;text-align:left;font-size:12px}th{font-weight:500;color:#98a19b;padding:12px 10px;border-bottom:1px solid var(--line);white-space:nowrap}td{padding:16px 10px;border-bottom:1px solid #f1f3f2;max-width:360px;overflow-wrap:anywhere}.table-action{font-size:11px;color:var(--green);padding:4px 7px}.table-action.danger{color:#bd4852}.settings-form{display:grid;grid-template-columns:1fr 1fr;gap:18px}.settings-form .span2{grid-column:1/-1}.settings-form textarea{min-height:100px}.settings-form label input[type=checkbox]{align-self:flex-start}.provider-badge{display:inline-block;padding:3px 8px;border-radius:5px;background:#edf6ef;color:#579771;font-size:11px}.provider-badge.off{background:#f4f1eb;color:#a48c60}.admin-search{max-width:380px;width:100%;margin-bottom:16px}.admin-warning{background:#fffbef;color:#a18b57;padding:16px 20px;border-radius:8px;font-size:12px;margin-bottom:25px}
@media(min-width:1550px){.list-pane{width:340px}.message-list{padding-left:55px;padding-right:55px}.composer{padding-left:45px;padding-right:45px}}
@media(max-width:1000px){.hero{gap:35px;padding-top:60px}.hero h1{font-size:43px}.hero-demo{transform:none}.list-pane{width:268px}.app-rail{width:62px}.admin-sidebar{width:190px}.admin-main{padding:30px 25px}.stats-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:720px){.site-nav{height:75px;padding:0 22px}.site-nav .links a:not(.primary){display:none}.site-nav .links{gap:12px}.brand{font-size:17px}.hero{grid-template-columns:1fr;padding:50px 25px;gap:40px}.hero h1{font-size:43px;letter-spacing:-1.5px}.hero-demo{max-width:460px}.section{padding:45px 25px}.feature-grid,.article-list{grid-template-columns:1fr;gap:25px}.section-head{align-items:start;flex-direction:column;gap:0}.site-footer{padding:28px 25px;gap:12px}.list-pane{width:calc(100vw - 59px)}.app-rail{width:59px;padding-top:18px}.chat-shell:not(.mobile-conversation) .chat-pane{display:none}.chat-shell.mobile-conversation .list-pane{display:none}.chat-shell.mobile-conversation .app-rail{display:none}.chat-header{height:74px;padding:14px 18px}.message-list{padding:20px 15px;gap:17px}.message-row{max-width:94%}.bubble img{max-width:210px}.bubble video{max-width:230px}.composer{padding:10px 17px 15px}.bubble audio{max-width:205px}.mobile-back{display:inline-flex}.admin-sidebar{width:145px;padding:23px 10px}.admin-sidebar .brand{font-size:13px}.admin-sidebar .brand img{width:24px;height:24px}.admin-sidebar>button{font-size:12px;padding:12px}.admin-main{padding:25px 15px}.admin-top h1{font-size:21px}.stats-grid{grid-template-columns:1fr 1fr;gap:10px}.stat{padding:15px}.stat .value{font-size:23px}.panel{padding:16px}.settings-form{grid-template-columns:1fr}.settings-form .span2{grid-column:auto}.modal{padding:24px}.hero .lead{font-size:15px}.article-page{margin:40px auto}}
@media(min-width:721px){.mobile-back{display:none}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
.oauth-buttons{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px}.oauth-buttons a{font-size:11px;padding:8px 13px}.callback-url{font-family:ui-monospace,monospace;font-size:12px;overflow-wrap:anywhere;padding:12px;background:#f5f8f6;border-radius:6px;margin:7px 0}