:root{--paper:#f2eee4;--paper-light:#fbf9f3;--ink:#20231f;--muted:#706d64;--line:#d7d0c3;--moss:#283129;--moss-soft:#445146;--clay:#bb6046;--clay-soft:#ead4c8;--serif:"Noto Serif SC", "Source Han Serif SC", "Songti SC", STSong, serif;--sans:"LXGW WenKai", "Kaiti SC", "PingFang SC", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;background:var(--paper)}body{color:var(--ink);background:var(--paper);font-family:var(--sans);-webkit-font-smoothing:antialiased;margin:0}body:before{content:"";pointer-events:none;opacity:.28;z-index:20;background-image:radial-gradient(circle at 20% 10%,#41372709 0 1px,#0000 1.4px),radial-gradient(circle at 75% 65%,#41372706 0 1px,#0000 1.3px);background-size:17px 19px,23px 29px;position:fixed;inset:0}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{color:inherit}button,a{-webkit-tap-highlight-color:transparent}:focus-visible{outline:3px solid color-mix(in srgb, var(--clay) 55%, transparent);outline-offset:3px}.landing-shell{min-height:100vh;overflow:hidden}.site-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;width:min(1380px,100% - 64px);height:92px;margin:0 auto;display:flex}.wordmark{font-family:var(--serif);letter-spacing:-.05em;font-size:22px;font-weight:700}.site-header nav{color:var(--muted);align-items:center;gap:34px;font-size:13px;display:flex}.site-header nav a:not(.header-cta):hover{color:var(--ink)}.header-cta{color:var(--paper-light);background:var(--moss);border-radius:99px;padding:11px 18px}.hero{grid-template-columns:1.04fr .96fr;align-items:center;gap:7vw;width:min(1380px,100% - 64px);min-height:720px;margin:0 auto;padding:76px 3vw 86px;display:grid}.eyebrow{color:#8b5947;letter-spacing:.18em;align-items:center;gap:10px;margin:0 0 24px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:10px;font-weight:800;display:flex}.eyebrow span{background:var(--clay);width:26px;height:1px}.hero h1,.section-heading h2,.invitation h2,.chat-welcome h1,.admin-title h1,.admin-login h1{font-family:var(--serif);letter-spacing:-.065em;margin:0;font-weight:500}.hero h1{max-width:680px;font-size:clamp(54px,6.2vw,92px);line-height:1.12}.hero-intro{color:#5f5d56;letter-spacing:.02em;max-width:610px;margin:34px 0 0;font-size:17px;line-height:2}.hero-actions{align-items:center;gap:30px;margin-top:38px;display:flex}.primary-button{color:#fff;background:var(--clay);border-radius:4px;align-items:center;gap:32px;min-width:180px;padding:16px 18px 16px 23px;transition:transform .2s,box-shadow .2s;display:inline-flex;box-shadow:0 12px 30px #82412c2e}.primary-button span{font-size:20px}.primary-button:hover{transform:translateY(-2px);box-shadow:0 17px 38px #82412c3d}.text-link{color:var(--muted);border-bottom:1px solid #aaa397;padding-bottom:5px;font-size:14px}.text-link span{margin-left:8px}.privacy-line{color:#969085;margin:22px 0 0;font-size:11px}.conversation-preview{background:#fcfaf4d1;border:1px solid #cfc7b9;min-height:535px;padding:27px 26px;position:relative;transform:rotate(.7deg);box-shadow:0 26px 70px #473e2e1f}.conversation-preview:before{content:"";z-index:-1;border:1px solid #cfc7b9;position:absolute;inset:10px -10px -10px 10px}.preview-topline{border-bottom:1px solid var(--line);color:#8d877c;letter-spacing:.08em;justify-content:space-between;padding-bottom:22px;font-size:10px;display:flex}.preview-topline i{color:#637764;font-style:normal}.preview-topline i:before{content:"";background:#728a74;border-radius:50%;width:6px;height:6px;margin-right:6px;display:inline-block}.preview-message{margin-top:27px;font-size:14px;line-height:1.8}.preview-user{color:#4e4d48;background:#ebe6dc;border-radius:14px 14px 3px;max-width:70%;margin-left:auto;padding:13px 16px}.preview-user.short{margin-top:24px}.preview-assistant{padding-left:50px;position:relative}.speaker-mark,.message-avatar{color:#fff;background:var(--moss);width:34px;height:34px;font-family:var(--serif);border-radius:50%;place-items:center;font-size:13px;display:grid}.speaker-mark{position:absolute;top:2px;left:0}.preview-assistant p{color:#454640;margin:0}.preview-assistant small{color:var(--clay);border-top:1px solid #e5ded1;margin-top:13px;padding-top:11px;font-size:10px;display:block}.preview-composer{border:1px solid var(--line);color:#817b71;background:#fff;justify-content:space-between;align-items:flex-end;gap:16px;min-height:74px;margin-top:27px;padding:15px 14px;font-size:11px;line-height:1.5;display:flex}.preview-composer b{color:#fff;background:var(--clay);border-radius:50%;flex:0 0 28px;place-items:center;width:28px;height:28px;display:grid}.stages{color:#f2eee4;background:var(--moss);padding:108px max(32px,50vw - 690px)}.section-heading{grid-template-columns:.8fr 1.2fr;align-items:end;gap:30px;margin-bottom:65px;display:grid}.section-heading .eyebrow{color:#dda58f}.section-heading h2{font-size:clamp(38px,5vw,67px);line-height:1.25}.stage-grid{border-top:1px solid #596159;grid-template-columns:repeat(3,1fr);display:grid}.stage-card{border-right:1px solid #596159;min-height:350px;padding:36px 36px 30px 0}.stage-card+.stage-card{padding-left:36px}.stage-card:last-child{border-right:0}.stage-number{color:#be8b77;font-family:var(--serif);font-size:28px}.stage-card h3{font-family:var(--serif);margin:75px 0 18px;font-size:28px;font-weight:500}.stage-card p{color:#bbc0b8;max-width:340px;margin:0;font-size:14px;line-height:1.9}.stage-card b{color:#d9ddd6;letter-spacing:.12em;border:1px solid #697269;border-radius:99px;margin-top:31px;padding:5px 9px;font-size:9px;display:inline-block}.invitation{text-align:center;flex-direction:column;justify-content:center;align-items:center;min-height:560px;display:flex;position:relative}.invitation:before,.invitation:after{content:"";background:var(--line);width:220px;height:1px;position:absolute;transform:rotate(-35deg)}.invitation:before{top:130px;left:-35px}.invitation:after{bottom:130px;right:-35px}.invitation p{color:var(--muted);font-size:14px}.invitation h2{margin-top:9px;font-size:clamp(42px,6vw,76px)}.round-arrow{color:#fff;background:var(--clay);border-radius:50%;place-items:center;width:66px;height:66px;margin-top:38px;font-size:28px;transition:transform .2s;display:grid}.round-arrow:hover{transform:rotate(8deg)scale(1.05)}footer{border-top:1px solid var(--line);color:#827d74;justify-content:space-between;width:min(1380px,100% - 64px);margin:0 auto;padding:24px 0 30px;font-size:10px;display:flex}.reveal{animation:.7s both reveal}.reveal-1{animation-delay:80ms}.reveal-2{animation-delay:.16s}.reveal-3{animation-delay:.24s}@keyframes reveal{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.chat-app{background:var(--paper-light);grid-template-columns:284px 1fr;height:100vh;display:grid;overflow:hidden}.history-panel{color:#e9e8df;background:var(--moss);z-index:11;flex-direction:column;min-width:0;padding:25px 18px 18px;display:flex}.history-head{justify-content:space-between;align-items:flex-start;height:48px;padding:0 7px;display:flex}.history-head .wordmark{font-size:21px}.mobile-close{color:#fff;background:0 0;border:0;font-size:26px;display:none}.new-chat{color:#f4f0e8;cursor:pointer;text-align:left;background:0 0;border:1px solid #586158;border-radius:5px;align-items:center;gap:9px;width:100%;padding:12px 13px;display:flex}.new-chat:hover{background:#343e35}.new-chat span{color:#d9a08a;font-size:18px}.history-label{color:#8f998f;letter-spacing:.14em;text-transform:uppercase;margin:29px 10px 10px;font-size:9px}.history-list{flex:1;overflow:auto}.history-list button{color:#cdd1ca;cursor:pointer;text-align:left;background:0 0;border:0;border-radius:5px;width:100%;padding:12px 11px;position:relative}.history-list button:hover,.history-list button.active{color:#fff;background:#343e35}.history-list button.active:before{content:"";background:#d2876c;width:2px;position:absolute;top:10px;bottom:10px;left:0}.history-list button span{white-space:nowrap;text-overflow:ellipsis;font-size:12px;display:block;overflow:hidden}.history-list button small{color:#879087;margin-top:4px;font-size:9px;display:block}.empty-history{color:#879087;margin:26px 11px;font-size:11px;line-height:1.8}.history-account{border-top:1px solid #485149;align-items:center;gap:10px;min-height:60px;padding:13px 7px 0;display:flex}.avatar{color:#f2c4b1;width:34px;height:34px;font-family:var(--serif);background:#3c493e;border-radius:50%;flex:0 0 34px;place-items:center;display:grid}.history-account div{flex:1;min-width:0}.history-account b,.history-account small{white-space:nowrap;text-overflow:ellipsis;display:block;overflow:hidden}.history-account b{font-size:11px}.history-account small{color:#8f998f;margin-top:4px;font-size:8px}.history-account>button{color:#919990;cursor:pointer;background:0 0;border:0;font-size:9px}.history-account .login-row{color:#fff;text-align:left;align-items:center;gap:10px;width:100%;padding:0;display:flex}.login-row i{color:#d79a81}.chat-main{flex-direction:column;min-width:0;display:flex;position:relative}.chat-header{-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);background:#fbf9f3e0;border-bottom:1px solid #e5dfd3;justify-content:space-between;align-items:center;min-height:72px;padding:0 30px;display:flex}.chat-header>div:first-of-type{gap:5px;display:grid}.chat-header b{font-family:var(--serif);font-size:14px}.chat-header small{color:#898378;font-size:9px}.chat-header small i{background:#6e8b70;border-radius:50%;width:6px;height:6px;margin-right:5px;display:inline-block}.chat-header-actions{align-items:center;gap:18px;display:flex}.chat-header-actions button,.chat-header-actions a{color:#777167;cursor:pointer;background:0 0;border:0;font-size:10px}.history-toggle{background:0 0;border:0;font-size:20px;display:none}.messages{scroll-behavior:smooth;flex:1;padding:38px max(28px,50% - 430px) 150px;overflow-y:auto}.chat-welcome{max-width:780px;margin:7vh auto 0}.chat-welcome h1{font-size:clamp(43px,5.2vw,68px);line-height:1.18}.chat-welcome>p:not(.eyebrow){max-width:600px;color:var(--muted);margin:24px 0 34px;font-size:14px;line-height:1.9}.prompt-grid{grid-template-columns:1fr 1fr;gap:10px;display:grid}.prompt-grid button{border:1px solid var(--line);color:#53534e;cursor:pointer;text-align:left;background:#ffffff94;border-radius:4px;justify-content:space-between;align-items:flex-end;gap:15px;min-height:76px;padding:16px;font-size:11px;line-height:1.5;transition:border-color .2s,transform .2s;display:flex}.prompt-grid button:hover{border-color:#aaa092;transform:translateY(-2px)}.prompt-grid span{color:var(--clay);font-size:18px}.message{align-items:flex-start;gap:15px;max-width:820px;margin:0 auto 32px;display:flex}.message.user{justify-content:flex-end}.message.user .message-content{background:#e8e3d8;border-radius:16px 16px 3px;max-width:75%;padding:13px 17px}.message.assistant .message-content{flex:1;max-width:calc(100% - 50px)}.message-avatar{flex:0 0 34px}.message-content>p{white-space:pre-wrap;color:#343630;margin:0;font-size:14px;line-height:1.9}.answer-meta{align-items:center;gap:8px;margin:2px 0 12px;display:flex}.answer-meta span,.answer-meta em{letter-spacing:.05em;border-radius:99px;padding:4px 7px;font-size:8px;font-style:normal}.answer-meta span{color:#5d765f;background:#e2ebe1}.answer-meta em{color:#9a654f;background:#f1ded5}.owner-note-tag{color:var(--clay);margin-top:9px;font-size:9px;display:block}.citation-list{gap:7px;margin-top:17px;display:grid}.citation-list details{background:#ffffff85;border:1px solid #ddd6ca}.citation-list summary{cursor:pointer;align-items:center;gap:10px;padding:10px 12px;list-style:none;display:flex}.citation-list summary::-webkit-details-marker{display:none}.citation-list summary b{color:#fff;background:#7b866f;border-radius:50%;place-items:center;width:25px;height:25px;font-size:8px;display:grid}.citation-list summary span{font-family:var(--serif);flex:1;font-size:11px}.citation-list summary i{color:#9a9488;font-style:normal}.citation-list details>p{color:#666258;margin:0;padding:2px 12px 8px 47px;font-size:10px;line-height:1.7}.citation-list details>small{color:#9b9388;padding:0 12px 12px 47px;font-size:8px;display:block}.thinking{align-items:center;gap:4px;min-height:34px;display:flex}.thinking i{background:#7f897d;border-radius:50%;width:5px;height:5px;animation:1.1s infinite pulse}.thinking i:nth-child(2){animation-delay:.16s}.thinking i:nth-child(3){animation-delay:.32s}.thinking span{color:#8e887d;margin-left:7px;font-size:9px}@keyframes pulse{0%,70%,to{opacity:.25;transform:translateY(0)}35%{opacity:1;transform:translateY(-3px)}}.chat-error{border-left:3px solid var(--clay);color:#8c4c3a;background:#f2e1d9;max-width:820px;margin:10px auto;padding:11px 13px;font-size:11px}.composer-wrap{background:linear-gradient(transparent, var(--paper-light) 24%);padding:18px max(28px,50% - 430px) 16px;position:absolute;bottom:0;left:0;right:0}.composer{background:#fff;border:1px solid #cbc3b6;border-radius:7px;padding:13px 14px 10px;box-shadow:0 12px 40px #4239291c}.composer textarea{resize:none;color:#30322d;background:0 0;border:0;outline:0;width:100%;max-height:150px;font-size:13px;line-height:1.55}.composer textarea::placeholder{color:#aaa397}.composer-bottom{justify-content:space-between;align-items:center;margin-top:8px;display:flex}.composer-bottom label{color:#8b857b;cursor:pointer;align-items:center;gap:7px;font-size:9px;display:flex}.composer-bottom input{accent-color:var(--clay)}.composer-bottom button{color:#fff;background:var(--clay);cursor:pointer;border:0;border-radius:50%;width:32px;height:32px}.composer-bottom button:disabled{opacity:.35;cursor:default}.composer-wrap>p{color:#aaa399;text-align:center;margin:7px 0 0;font-size:8px}.dialog-backdrop{-webkit-backdrop-filter:blur(9px);backdrop-filter:blur(9px);z-index:50;background:#191d199e;place-items:center;padding:22px;display:grid;position:fixed;inset:0}.auth-dialog{background:var(--paper-light);border:1px solid #d5cdc0;width:min(440px,100%);max-height:92vh;padding:34px;position:relative;overflow:auto;box-shadow:0 30px 100px #1419154d}.dialog-close{cursor:pointer;color:#8d877d;background:0 0;border:0;font-size:25px;position:absolute;top:14px;right:17px}.auth-dialog h2{font-family:var(--serif);margin:0;font-size:31px;font-weight:500}.dialog-intro{color:var(--muted);margin:10px 0 23px;font-size:11px;line-height:1.7}.segmented{background:#e9e4da;border-radius:5px;grid-template-columns:1fr 1fr;padding:3px;display:grid}.segmented button{cursor:pointer;background:0 0;border:0;border-radius:3px;padding:9px;font-size:11px}.segmented button.active{background:#fff;box-shadow:0 2px 8px #3e362814}.auth-ways{gap:18px;margin:21px 0 14px;display:flex}.auth-ways button{color:#969087;cursor:pointer;background:0 0;border:0;border-bottom:2px solid #0000;padding:0 0 5px;font-size:11px}.auth-ways button.active{border-color:var(--clay);color:var(--ink)}.auth-dialog label{color:#68645b;gap:7px;margin-bottom:13px;font-size:10px;display:grid}.auth-dialog input{background:#fff;border:1px solid #d5cec2;border-radius:3px;outline:0;width:100%;padding:11px 12px;font-size:12px}.auth-dialog input:focus{border-color:#958c7f}.code-field{grid-template-columns:1fr auto;gap:7px;display:grid}.code-field button{cursor:pointer;background:0 0;border:1px solid #b7ad9f;border-radius:3px;padding:0 12px;font-size:9px}.inline-switch{gap:10px;margin:-4px 0 12px;display:flex}.inline-switch button{color:#999288;cursor:pointer;background:0 0;border:0;font-size:9px}.inline-switch button.active{color:var(--clay)}.form-error{color:#a34835;margin:0 0 12px;font-size:10px}.submit-button{color:#fff;background:var(--moss);cursor:pointer;border:0;border-radius:3px;width:100%;padding:13px;font-size:12px}.admin-login{background:var(--moss);color:#fff;min-height:100vh;padding:30px 5vw}.admin-login>.wordmark{display:inline-block}.admin-login form{width:min(430px,100%);margin:15vh auto 0}.admin-login .eyebrow{color:#d9a18a}.admin-login h1{font-size:58px}.admin-login p:not(.eyebrow){color:#b7bdb5;font-size:12px;line-height:1.8}.admin-login input{color:#fff;background:#313a32;border:1px solid #596259;outline:0;width:100%;margin-top:20px;padding:13px}.admin-login button{background:var(--clay);color:#fff;cursor:pointer;border:0;width:100%;margin-top:10px;padding:13px}.admin-shell{min-height:100vh;padding:0 max(28px,50vw - 690px) 60px}.admin-shell>header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;height:78px;display:flex}.admin-shell>header div{align-items:baseline;gap:18px;display:flex}.admin-shell>header span{color:#898378;font-size:10px}.admin-shell>header button{color:#817a70;cursor:pointer;background:0 0;border:0;font-size:10px}.admin-title{grid-template-columns:1fr 1fr;align-items:end;gap:40px;padding:56px 0 40px;display:grid}.admin-title h1{font-size:clamp(48px,5vw,72px)}.admin-title>p{max-width:480px;color:var(--muted);justify-self:end;font-size:12px;line-height:1.9}.stat-grid{border:1px solid var(--line);background:#fff6;grid-template-columns:repeat(4,1fr);display:grid}.stat-grid article{border-right:1px solid var(--line);min-height:116px;padding:18px}.stat-grid article:last-child{border:0}.stat-grid span,.stat-grid small{color:#8e887e;font-size:9px;display:block}.stat-grid b{font-family:var(--serif);margin-top:16px;font-size:28px;display:block}.stat-grid small{margin-top:5px}.admin-filters{grid-template-columns:1fr 170px 180px 80px;gap:8px;margin:24px 0 14px;display:grid}.admin-filters input,.admin-filters select{border:1px solid var(--line);background:var(--paper-light);min-height:40px;padding:0 12px;font-size:10px}.admin-filters label{align-items:center;gap:7px;font-size:9px;display:flex}.admin-filters button{color:#fff;background:var(--moss);cursor:pointer;border:0}.admin-content{border:1px solid var(--line);background:var(--paper-light);grid-template-columns:330px 1fr;min-height:560px;display:grid}.admin-list{border-right:1px solid var(--line);max-height:680px;overflow:auto}.admin-list>button{cursor:pointer;text-align:left;background:0 0;border:0;border-bottom:1px solid #e5dfd4;width:100%;padding:15px}.admin-list>button:hover,.admin-list>button.active{background:#eee9df}.admin-list div{align-items:center;gap:7px;display:flex}.admin-list b{white-space:nowrap;text-overflow:ellipsis;font-family:var(--serif);font-size:12px;overflow:hidden}.admin-list em{color:#a04f39;background:#f0d8cf;border-radius:99px;padding:3px 5px;font-size:7px;font-style:normal}.admin-list p,.admin-list small{color:#8c867c;margin:6px 0 0;font-size:8px}.admin-detail{min-width:0}.admin-detail>header{border-bottom:1px solid var(--line);padding:22px}.admin-detail h2{font-family:var(--serif);margin:0;font-size:21px}.admin-detail header p{color:#918a80;margin:6px 0 0;font-size:9px}.admin-messages{max-height:600px;padding:22px;overflow:auto}.admin-messages article{max-width:82%;margin-bottom:18px}.admin-messages article.user{background:#e9e4da;border-radius:12px 12px 2px;margin-left:auto;padding:12px 14px}.admin-messages article.assistant{border-left:2px solid #899484;padding-left:14px}.admin-messages small{color:#918a80;font-size:8px}.admin-messages p{white-space:pre-wrap;margin:7px 0 0;font-size:11px;line-height:1.75}.detail-empty{color:#a39c91;place-items:center;min-height:500px;font-size:11px;display:grid}@media (max-width:850px){.site-header{width:calc(100% - 36px);height:72px}.site-header nav>a:not(.header-cta){display:none}.hero{grid-template-columns:1fr;width:calc(100% - 36px);min-height:auto;padding:65px 0 85px}.hero h1{font-size:clamp(48px,14vw,68px)}.hero-intro{font-size:15px}.conversation-preview{min-height:470px;margin:30px 7px 0 0}.section-heading,.stage-grid{grid-template-columns:1fr}.stage-card,.stage-card+.stage-card{border-bottom:1px solid #596159;border-right:0;min-height:auto;padding:32px 0}.stage-card h3{margin-top:35px}.invitation{min-height:450px}.invitation:before,.invitation:after{width:120px}footer{gap:8px;width:calc(100% - 36px);display:grid}.chat-app{grid-template-columns:1fr}.history-panel{width:min(86vw,320px);transition:transform .25s;position:fixed;top:0;bottom:0;left:0;transform:translate(-105%)}.history-panel.open{transform:translate(0)}.mobile-close,.history-toggle{display:block}.history-scrim{z-index:10;background:#14181480;border:0;position:fixed;inset:0}.chat-header{gap:12px;padding:0 16px}.chat-header>div:first-of-type{flex:1}.chat-header-actions button{display:none}.messages{padding:28px 16px 148px}.chat-welcome{margin-top:4vh}.chat-welcome h1{font-size:43px}.prompt-grid{grid-template-columns:1fr}.prompt-grid button{min-height:62px}.message.user .message-content{max-width:88%}.composer-wrap{padding:18px 12px 10px}.composer-wrap>p{font-size:7px}.admin-shell{padding-inline:16px}.admin-title{grid-template-columns:1fr}.admin-title>p{justify-self:start}.stat-grid{grid-template-columns:1fr 1fr}.stat-grid article:nth-child(2){border-right:0}.stat-grid article:nth-child(-n+2){border-bottom:1px solid var(--line)}.admin-filters{grid-template-columns:1fr 1fr}.admin-content{grid-template-columns:1fr}.admin-list{border-right:0;border-bottom:1px solid var(--line);max-height:330px}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}