:root{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:#2d3b31;background:#f6f5ef;font-synthesis:none}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{margin:0;min-height:100%;height:100%}
button,input,textarea{font:inherit}
button{cursor:pointer}
.shell{height:100dvh;max-width:1900px;margin:auto;display:grid;grid-template-columns:340px minmax(0,1fr);background:#f6f5ef}
.rail{background:#202e27;color:#f5f3eb;display:flex;flex-direction:column;min-height:0;padding:31px 33px;overflow:hidden;position:relative}
.rail:after{content:"";position:absolute;width:490px;height:490px;border:1px solid #ffffff0a;border-radius:50%;right:-380px;top:23%;pointer-events:none}
.rail-brand{display:flex;gap:13px;align-items:center;position:relative;z-index:1}
.brand-symbol{width:45px;height:45px;border:1px solid #c8b49169;border-radius:13px;color:#d1bb94;display:grid;place-items:center;font:italic 32px Georgia,serif}
.rail-brand strong{font-weight:600;font-size:12px;letter-spacing:.15em}
.rail-brand small{display:block;margin-top:5px;font-size:9px;letter-spacing:.12em;color:#8b9e91}
.rail-main{margin:auto 0;position:relative;z-index:1;padding:25px 0}
.eyebrow{font-size:10px;color:#b1a07b;letter-spacing:.19em;font-weight:600}
.rail h1{font-family:"Songti SC","SimSun",serif;font-size:40px;line-height:1.62;letter-spacing:-.04em;font-weight:400;margin:16px 0 18px}
.rail h1 em{font-style:normal;color:#d7ba91}
.intro{color:#a5b4aa;font-size:13px;line-height:2;max-width:250px;margin:0}
.members{display:flex;flex-direction:column;gap:22px;margin-top:47px}
.member{display:flex;align-items:center;gap:14px}
.portrait{width:38px;height:38px;border-radius:14px;display:grid;place-items:center;flex:none;font-size:14px;background:#405c4c;color:#d8ebd9}
.portrait.guest{background:#654c3f;color:#f3dec8}
.portrait.ai{background:#464c71;color:#e4e5ff;font-size:12px;font-weight:700}
.member b{display:block;font-weight:500;font-size:13px}
.member small{display:block;color:#82968a;font-size:11px;margin-top:5px}
.member small.online{color:#aad1a6}
.rail-footer{z-index:1;font-size:12px;line-height:2;color:#a3b2a5}
.rail-rule{display:block;width:27px;border-top:1px solid #6e826f;margin-bottom:18px}
.rail-footer .note{font-size:10px;color:#7c9483;margin-top:18px}
.main{display:flex;flex-direction:column;min-height:0;min-width:0}
.topbar{flex:none;height:75px;padding:0 45px;border-bottom:1px solid #e0e5dd;display:flex;align-items:center;justify-content:space-between}
.top-left{display:flex;align-items:center;gap:11px}
.top-left strong{font-size:14px;letter-spacing:.05em;font-weight:600;display:block}
.top-left span{display:block;color:#929e91;font-size:11px;margin-top:5px}
.mobile-logo{display:none}
.top-actions{display:flex;align-items:center;gap:22px}
.connection{font-size:12px;color:#839186;display:flex;align-items:center;gap:9px}
.connection i{display:inline-block;width:7px;height:7px;background:#b7bdb8;border-radius:50%}
.connection i.connected{background:#75aa7a;box-shadow:0 0 0 3px #75aa7a1f}
.leave{border:0;background:none;color:#7c8a7e;font-size:12px;padding:10px}
.leave:hover{color:#b16b5b}
.entry{flex:1;display:grid;place-items:center;padding:24px;overflow:auto}
.entry-card{max-width:470px;width:100%;text-align:center;background:#fffefa;padding:48px 42px;border:1px solid #e5e7df;border-radius:24px;box-shadow:0 22px 85px #263b2c0b}
.entry-orbit{display:flex;align-items:center;justify-content:center;gap:10px;margin:24px 0 28px}
.entry-orbit span{width:55px;height:55px;border-radius:21px;display:grid;place-items:center;color:white;font-weight:600;background:#334b3e}
.entry-orbit span:nth-child(2){background:#76584b}
.entry-orbit span:nth-child(3){background:#555a85;font-size:13px}
.entry-card h2{font-family:"Songti SC","SimSun",serif;font-size:30px;font-weight:500;color:#2a3b30;margin:0 0 18px}
.entry-card p:not(.eyebrow){font-size:13px;color:#859087;line-height:2;margin:0 0 24px}
.entry-card form{display:flex;flex-direction:column;gap:11px}
.entry-card input{width:100%;border:1px solid #e1e6dd;border-radius:11px;background:#fbfaf6;padding:13px;outline:none;font-size:13px;min-width:0}
.entry-card input:focus{border-color:#8fa993}
.entry-card button{border:0;border-radius:11px;padding:13px;color:#f9faf6;background:#324c3b;font-size:13px}
.entry-card button:disabled{opacity:.5}
.entry-card button span{margin-left:7px}
.entry-card small{display:block;color:#9ca79e;font-size:10px;margin-top:22px}
.entry-error{min-height:18px;color:#b26c5c;font-size:12px;margin-top:10px}
.room{flex:1;min-height:0;display:flex;flex-direction:column}
.scroll{flex:1;min-height:0;overflow-y:auto;overscroll-behavior:contain;scrollbar-color:#d4ded2 transparent;scrollbar-width:thin}
.timeline{max-width:850px;margin:auto;padding:25px 42px 30px;min-height:100%}
.room-start{text-align:center;padding:42px 10px 34px}
.room-start .room-mark{font-size:35px;color:#c5b396;margin:0 auto 16px}
.room-start p:last-child{font-size:12px;color:#9da59c;line-height:2}
.message{display:flex;align-items:flex-start;gap:13px;margin:0 0 24px;animation:appear .2s ease-out}
.message.mine{flex-direction:row-reverse}
.message-avatar{display:grid;place-items:center;border-radius:11px;width:35px;height:35px;flex:none;font-size:12px;color:#f2f5ef;background:#415e4e}
.message-avatar.xiaolai{background:#76584b}
.message-avatar.ds{background:#585d82;font-weight:700;font-size:11px}
.message-content{min-width:0;max-width:80%}
.message-meta{display:flex;gap:10px;align-items:center;color:#6d7d70;font-size:11px;margin-bottom:7px}
.message-meta time{font-size:10px;color:#abb6a9}
.message.mine .message-meta{justify-content:flex-end}
.bubble{border:1px solid #e4e7e0;background:#fffefa;border-radius:5px 15px 15px 15px;padding:12px 16px;color:#324238;line-height:1.85;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}
.message.mine .bubble{background:#e3eee4;border-color:#d6e5d7;border-radius:15px 5px 15px 15px}
.message.ds .bubble{background:#f0f0f8;border-color:#e5e6f3}
.reasoning{margin-top:9px;max-width:100%;font-size:12px;color:#85869b}
.reasoning summary{cursor:pointer;list-style:none;display:inline-flex;align-items:center;gap:7px;padding:5px 7px 5px 0;border-radius:5px;user-select:none}
.reasoning summary::-webkit-details-marker{display:none}
.reasoning summary:before{content:"";width:0;height:0;border-left:5px solid #8b8ea5;border-top:4px solid transparent;border-bottom:4px solid transparent;transition:transform .15s}
.reasoning[open] summary:before{transform:rotate(90deg)}
.reasoning summary:hover{color:#585d83}
.reasoning summary:focus-visible{outline:2px solid #7c83a9;outline-offset:3px}
.reasoning-text{border-left:2px solid #d6d8e6;padding:10px 12px;margin:6px 0 6px 3px;white-space:pre-wrap;overflow-wrap:anywhere;max-height:340px;overflow-y:auto;line-height:1.7;color:#687184;font-size:12px}
.compose-wrap{flex:none;padding:10px 42px calc(18px + env(safe-area-inset-bottom))}
.compose{background:#fffefa;border:1px solid #dfe6dc;border-radius:16px;padding:13px 16px 11px;max-width:770px;margin:auto;box-shadow:0 10px 25px #263c2c0b}
.compose:focus-within{border-color:#9eae9f}
.compose textarea{resize:none;width:100%;height:34px;min-height:34px;max-height:150px;overflow:auto;background:transparent;border:0;outline:none;font-size:14px;color:#2c4033;line-height:1.7}
.compose textarea::placeholder{color:#b1b9b0}
.compose-row{display:flex;align-items:center;justify-content:space-between;margin-top:7px}
.compose-row small{font-size:10px;color:#afb7ac}
.compose-row button{width:35px;height:35px;border:0;border-radius:11px;background:#2c4936;color:#fff;font-size:20px}
.compose-row button:disabled{background:#dce3da;color:#aab5ac;cursor:default}
.disclaimer{text-align:center;margin:12px auto 0;color:#a4afa3;font-size:10px}
.toast{position:fixed;z-index:99;left:50%;bottom:100px;transform:translateX(-50%);padding:13px 19px;background:#2c4034;color:#fff;border-radius:10px;font-size:13px;box-shadow:0 10px 30px #213d2b29;max-width:90vw}
.visually-hidden{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
@keyframes appear{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:950px){
.shell{grid-template-columns:280px minmax(0,1fr)}
.rail{padding:26px 23px}.rail h1{font-size:34px}
.topbar{padding:0 25px}.timeline{padding:20px 25px}.compose-wrap{padding-left:25px;padding-right:25px}
}
@media(max-width:680px){
.shell{display:block;height:100dvh}.rail{display:none}.main{height:100dvh}
.topbar{height:64px;padding:0 16px}
.mobile-logo{display:grid;width:29px;height:29px;border-radius:10px;place-items:center;background:#283b30;color:#e4ca9f;font:italic 23px Georgia,serif}
.top-left strong{font-size:12px}.top-left span{font-size:10px}
.top-actions{gap:7px}.connection{font-size:10px}.leave{font-size:11px;padding:10px 3px}
.timeline{padding:16px 15px 24px}
.room-start{padding:28px 8px 25px}
.message{gap:8px;margin-bottom:20px}
.message-avatar{width:30px;height:30px;border-radius:10px}
.message-content{max-width:83%}
.bubble{font-size:13px;padding:10px 12px}
.compose-wrap{padding:7px 11px calc(12px + env(safe-area-inset-bottom))}
.compose{padding:11px 12px 9px}.disclaimer{font-size:9px;line-height:1.6}
.entry{padding:14px}.entry-card{padding:38px 22px}
.entry-card h2{font-size:26px}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}