:root{--bg:#fafafa;--surface:#fff;--rail:#f4f4f5;--ink:#18181b;--muted:#71717a;--line:#e4e4e7;--accent:#2563eb;--soft:#eff6ff;--radius:18px}*{box-sizing:border-box}body{margin:0;display:flex;height:100dvh;background:var(--bg);color:var(--ink);font-family:"PingFang SC","Helvetica Neue",sans-serif;font-size:16px}button,textarea{font:inherit}button{cursor:pointer;color:inherit}button:disabled{cursor:wait;opacity:.5}button:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:3px}aside{width:256px;flex-shrink:0;background:var(--rail);padding:32px 20px 20px;display:flex;flex-direction:column;border-right:1px solid var(--line)}.brand{font-size:27px;font-weight:650;letter-spacing:-1px}.brand span{color:#a1a1aa;font-weight:300}.brand-sub{font-size:12px;color:var(--muted);margin:9px 0 32px;letter-spacing:2px}.new{background:var(--accent);border:0;color:white;text-align:left;padding:13px 14px;border-radius:10px;font-size:14px}.new kbd{float:right;color:#dbeafe;font-size:11px;margin-top:3px}.caption{color:var(--muted);font-size:11px;letter-spacing:2px;margin:32px 10px 12px}nav{overflow:auto;flex:1}nav button{display:block;width:100%;text-align:left;border:0;background:transparent;border-radius:8px;padding:12px;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-bottom:4px}nav button:hover,nav button.active{background:#e4e4e7}.sidebar-bottom{display:flex;align-items:center;font-size:12px;color:var(--muted);gap:7px;padding-top:18px;border-top:1px solid var(--line)}.sidebar-bottom button{margin-left:auto;border:0;background:none;font-size:12px}.dot{width:6px;height:6px;background:var(--accent);border-radius:50%}main{flex:1;min-width:0;display:flex;flex-direction:column}header{display:flex;align-items:center;justify-content:space-between;padding:24px 38px;border-bottom:1px solid var(--line);font-size:13px;height:78px;gap:15px}header>div{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.header-label{color:var(--muted)}.separator{margin:0 14px;color:#d4d4d8}.model-pill{white-space:nowrap;color:var(--accent);background:var(--soft);border:1px solid #dbeafe;border-radius:30px;padding:7px 12px;font-size:12px}#scroll{flex:1;overflow:auto;padding:0 36px}#welcome{max-width:850px;margin:clamp(60px,13vh,150px) auto 40px}.eyebrow{font-size:11px;letter-spacing:3px;color:var(--accent);font-weight:600}h1{font-size:clamp(30px,3.6vw,48px);font-weight:550;letter-spacing:-1.6px;margin:20px 0 16px}#welcome>p{font-size:15px;color:var(--muted);line-height:1.8}.suggestions{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:48px}.suggestions button{border:1px solid var(--line);border-radius:12px;text-align:left;background:var(--surface);padding:22px 18px;transition:transform .18s,border-color .18s}.suggestions button:hover{transform:translateY(-3px);border-color:#93c5fd}.suggestions span{display:block;color:var(--muted);font-size:10px;letter-spacing:1px;margin-bottom:22px}.suggestions strong{font-size:15px;font-weight:550;display:block}.suggestions small{display:block;font-size:11px;color:var(--muted);margin-top:10px}#messages{max-width:850px;margin:30px auto}.message{margin:32px 0}.role{font-size:10px;color:var(--muted);letter-spacing:2px;margin-bottom:12px}.message.user{margin-left:12%;background:var(--soft);border-radius:16px;padding:18px 22px}.message.user .role{display:none}.body{font-size:15px;line-height:1.9;overflow-wrap:anywhere;text-wrap:pretty}.body p:first-child{margin-top:0}.body p:last-child{margin-bottom:0}.body pre{overflow:auto;background:#f4f4f5;padding:18px;border-radius:10px;font-size:13px}.body code{font-family:Menlo,monospace;font-size:.88em}.body a{color:var(--accent)}.body table{border-collapse:collapse;display:block;overflow:auto}.body td,.body th{border:1px solid var(--line);padding:8px 12px}.composer-area{width:100%;max-width:922px;padding:10px 36px 24px;margin:0 auto}#composer{background:var(--surface);border:1px solid #e4e4e7;border-radius:var(--radius);padding:18px;box-shadow:0 8px 32px #18181b08}textarea{display:block;width:100%;border:none;resize:none;background:transparent;color:var(--ink);line-height:1.6;font-size:15px;min-height:62px;max-height:180px}textarea:focus{outline:none}.composer-bottom{display:flex;justify-content:space-between;align-items:center;margin-top:12px;font-size:11px;color:var(--muted)}.composer-bottom i{padding:0 8px;font-style:normal}#send{border:0;border-radius:10px;background:var(--accent);color:white;width:38px;height:38px;font-size:23px}.hint{font-size:10px;color:var(--muted);margin:12px 4px 0}.hint span{float:right}#activity{font-size:12px;color:var(--accent);min-height:24px;padding:0 4px 8px}dialog{border:1px solid var(--line);border-radius:20px;padding:32px;width:min(480px,90vw);color:var(--ink);background:var(--bg)}dialog::backdrop{background:#18181b55;backdrop-filter:blur(3px)}dialog p{font-size:13px;line-height:1.8;color:var(--muted)}dialog dl{font-size:14px}dt{color:var(--muted);margin-top:18px}dd{margin:6px 0}.close{float:right;background:none;border:0;font-size:24px}body.compact #messages{max-width:720px}@media(max-width:850px){aside{width:200px;padding:24px 14px}.suggestions{grid-template-columns:1fr}.suggestions button{padding:16px}.suggestions span{margin-bottom:10px}.suggestions small{display:none}#welcome{margin-top:45px}.suggestions{margin-top:25px}header{padding:18px 24px}}@media(max-width:600px){aside{width:64px;padding:20px 8px}.brand{font-size:18px}.brand span,.brand-sub,.caption,nav,.sidebar-bottom,.new kbd{display:none}.new{font-size:0;padding:10px;margin-top:26px;text-align:center}.new:first-letter{font-size:22px}.brand{font-size:0}.brand:first-letter{font-size:24px}header{padding:16px;font-size:12px}.header-label,.separator{display:none}.model-pill{font-size:10px}#scroll{padding:0 20px}.composer-area{padding:10px 15px 18px}h1{font-size:30px}#welcome>p{font-size:13px}.suggestions{gap:8px}.hint span{display:none}}
.account-controls{display:flex;gap:12px;align-items:center;flex-shrink:0}#account{font-size:12px;max-width:90px;overflow:hidden;text-overflow:ellipsis}#logout{background:transparent;border:1px solid var(--line);padding:6px 10px;border-radius:8px;font-size:12px}#logout:hover{background:var(--soft)}.login-page{align-items:center;justify-content:center;padding:24px}.login-card{width:440px;background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:38px;box-shadow:0 16px 60px #18181b08}.login-card h1{font-size:30px;margin:24px 0 12px}.login-card p{color:var(--muted);font-size:14px;line-height:1.7}.login-card label{display:block;font-size:13px;margin:24px 0 9px}.login-card input{width:100%;padding:13px 14px;border:1px solid var(--line);border-radius:10px;font:inherit;background:var(--bg)}.login-card input:focus{outline:2px solid var(--accent);outline-offset:2px}.login-card button{width:100%;border:0;background:var(--accent);color:white;padding:14px;border-radius:10px}.login-card small{display:block;color:var(--muted);line-height:1.7;font-size:11px;margin-top:24px}#login-error{color:#b91c1c;min-height:20px}@media(max-width:600px){header{flex-wrap:wrap;height:auto;min-height:78px}.account-controls{gap:8px}#account{max-width:64px}.login-card{padding:28px;width:100%}}
[hidden]{display:none!important}.main-menu{display:flex;flex-direction:column;gap:6px;margin:0 0 24px}.main-menu button{text-align:left;padding:13px 14px;border:0;background:transparent;border-radius:9px;font-size:14px;font-weight:550}.main-menu button:hover,.main-menu button.selected{background:var(--soft);color:var(--accent)}#agent-nav{min-height:0;display:flex;flex:1;flex-direction:column}aside .sidebar-bottom{margin-top:auto}#agent-view{display:flex;flex:1;flex-direction:column;min-height:0}#agent-view #scroll{min-height:0}.module-view{overflow:auto;flex:1;padding:42px clamp(24px,4vw,64px)}.module-intro{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:32px}.module-intro h1{font-size:34px;margin:12px 0}.module-intro p{font-size:14px;color:var(--muted)}.subtle-link{font-size:12px;color:var(--muted);text-decoration:none;white-space:nowrap}.filterbar{display:flex;gap:12px;margin-bottom:22px}.filterbar input{min-width:0;flex:1;max-width:580px;padding:12px 16px;border:1px solid var(--line);border-radius:10px;font:inherit;font-size:14px;background:var(--surface)}.filterbar select,.filterbar button{border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:10px 14px;font:inherit;font-size:13px}.filterbar button[aria-pressed=true]{background:var(--soft);color:var(--accent)}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:20px 0}.tabs button{border:0;border-radius:7px;background:transparent;padding:8px 12px;font-size:13px;color:var(--muted)}.tabs .selected{background:var(--soft);color:var(--accent)}.result-count{color:var(--muted);font-size:12px;margin:20px 0 16px}.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:18px}.directory-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:22px;display:flex;flex-direction:column;min-height:180px}.directory-card:hover{border-color:#a1a1aa}.card-top{display:flex;justify-content:space-between;align-items:center}.category-tag{font-size:10px;letter-spacing:1px;color:var(--muted)}.star{border:0;background:none;font-size:22px;color:var(--accent);padding:0 3px}.directory-card h3{font-size:17px;font-weight:550;margin:14px 0 8px;overflow-wrap:anywhere}.directory-card p{font-size:13px;color:var(--muted);line-height:1.7;margin:0 0 20px;overflow-wrap:anywhere}.environment-links{display:flex;gap:9px;margin-top:auto}.environment-links a,.detail-actions a,.detail-actions button{font-size:12px;text-decoration:none;color:var(--accent);background:var(--soft);padding:7px 11px;border-radius:7px;border:0}.environment-links .production{background:#fff7ed;color:#9a3412}.muted-note{color:var(--muted);font-size:11px;line-height:1.8;margin-top:24px}.primary{border:0;border-radius:9px;padding:12px 18px;background:var(--accent)!important;color:white!important;font-size:13px;white-space:nowrap;text-decoration:none}.detail-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.skill-card .detail-actions{margin-top:auto}.skill-meta{font-size:11px;color:var(--muted);margin:0 0 20px}.empty{grid-column:1/-1;text-align:center;padding:65px 20px;color:var(--muted);border:1px dashed var(--line);border-radius:14px}.empty h3{font-size:18px;color:var(--ink)}.empty p{font-size:13px}.wide-dialog{width:min(820px,92vw);max-height:85vh;overflow:auto}.upload-choices{display:flex;gap:12px}.upload-choice{padding:16px;border:1px dashed #a1a1aa;border-radius:10px;flex:1;font-size:13px;cursor:pointer;text-align:center}.upload-choice input{display:block;width:100%;margin-top:12px;font-size:11px}#upload-error{color:#b91c1c}#upload-preview{margin-top:20px;overflow-wrap:anywhere}#detail-files{padding-left:20px;font-size:13px;line-height:2.2;overflow-wrap:anywhere}.detail-actions .danger{color:#b91c1c;background:#fef2f2}#module-error{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);max-width:80vw;padding:14px 20px;border-radius:10px;background:#b91c1c;color:white;z-index:10;font-size:13px}@media(max-width:850px){.module-view{padding:28px 22px}.module-intro h1{font-size:29px}.filterbar{flex-wrap:wrap}.filterbar input{flex-basis:100%}.module-intro{align-items:flex-start}}@media(max-width:600px){aside{width:88px;padding:20px 8px}.main-menu{margin-top:24px}.main-menu button{font-size:12px;padding:12px 4px;text-align:center}.module-intro{flex-direction:column;gap:10px}.module-view{padding:24px 16px}.card-grid{grid-template-columns:1fr}.sidebar-bottom #settings{display:block}.upload-choices{flex-direction:column}#agent-nav nav{display:block}#agent-nav nav button{font-size:10px;padding:8px 2px}.new{font-size:0}.new:first-letter{font-size:22px}}

/* Site directory: compact, visibly grouped entries. */
.site-groups{display:flex;flex-direction:column;gap:26px}
.site-group-heading{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.site-group-heading h2{font-size:16px;margin:0;font-weight:650;color:var(--ink)}
.site-group-heading>span{font-size:12px;color:var(--muted);background:var(--soft);padding:2px 8px;border-radius:12px}
.site-rows{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:0 16px}
.site-row{display:flex;align-items:center;gap:12px;min-width:0;padding:13px 0;border-bottom:1px solid var(--line)}
.site-row:nth-last-child(-n+2){border-bottom:0}
.site-info{flex:1;min-width:0}.site-info h3{font-size:14px;line-height:1.5;margin:0 0 3px;font-weight:600}.site-info p{font-size:12px;line-height:1.5;color:var(--muted);margin:0}
.site-row .environment-links{margin-top:0;flex-shrink:0;gap:6px}.site-row .environment-links a{padding:5px 8px;white-space:nowrap}
.site-row .star{padding:4px;flex-shrink:0;font-size:19px}.site-row:hover .site-info h3{color:var(--accent)}
@media(max-width:1100px){.site-rows{grid-template-columns:1fr}.site-row:nth-last-child(2){border-bottom:1px solid var(--line)}}
@media(max-width:540px){.site-row{gap:7px;flex-wrap:wrap}.site-info{flex-basis:calc(100% - 40px)}.site-row .star{order:1}.site-row .environment-links{order:2;width:100%}.site-info{order:0}.site-rows{padding:0 12px}}
#quick-toggle{position:fixed;right:24px;bottom:22px;z-index:80;width:52px;height:52px;border:0;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;box-shadow:0 5px 20px #18181b20;cursor:pointer}
#quick-panel{position:fixed;z-index:79;right:24px;bottom:86px;width:410px;max-width:calc(100vw - 32px);height:min(610px,calc(100dvh - 110px));background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:0 12px 60px #18181b1a;display:flex;flex-direction:column;overflow:hidden}
#quick-panel[hidden]{display:none}.quick-heading{display:flex;align-items:center;gap:10px;padding:17px 18px;border-bottom:1px solid var(--line)}.quick-heading>div{flex:1}.quick-heading strong{font-size:15px}.quick-heading p{font-size:11px;color:var(--muted);margin:5px 0 0}.quick-heading button{background:none;border:0;color:var(--muted);cursor:pointer}#quick-hide{font-size:23px}
#quick-messages{flex:1;min-height:0;overflow-y:auto;padding:18px}.quick-empty{font-size:13px;line-height:1.9;color:var(--muted);text-align:center;padding-top:45px}.quick-message{margin-bottom:20px}.quick-message small{display:block;color:var(--muted);font-size:10px;margin-bottom:6px}.quick-message .body{font-size:13px;line-height:1.8;overflow-wrap:anywhere}.quick-message.user .body{background:var(--soft);border-radius:10px;padding:8px 12px}.quick-message .body p{margin:0 0 8px}.quick-message pre{max-width:100%;overflow:auto}
#quick-form{border-top:1px solid var(--line);padding:12px 16px}#quick-input{resize:none;width:100%;box-sizing:border-box;border:0;background:transparent;font:inherit;font-size:13px;padding:6px 0;outline:none}#quick-status{font-size:11px;color:var(--muted);min-height:17px}.quick-actions{display:flex;justify-content:space-between;align-items:center;gap:8px;margin-top:7px}.quick-actions span{font-size:10px;color:var(--muted)}#quick-send{border:0;border-radius:8px;padding:8px 12px;background:var(--accent);color:white;cursor:pointer}#quick-send:disabled{opacity:.5}
@media(max-width:540px){#quick-panel{right:16px;bottom:82px}#quick-toggle{right:16px;bottom:16px}}

/* Dedicated login and registration pages. */
.auth-page{background:#fff}.auth-card{width:360px;max-width:100%;padding:0;border:0;border-radius:0;box-shadow:none;background:transparent}
.auth-brand{font-size:24px;font-weight:700;letter-spacing:-.8px;color:var(--accent);margin-bottom:36px}.auth-brand span{font-size:17px;font-weight:400;letter-spacing:0;color:var(--muted)}
.auth-card h1{font-size:27px;margin:0 0 10px;letter-spacing:-.5px}.auth-card .auth-description{margin:0 0 30px;color:var(--muted);font-size:14px}
.auth-card label{margin:20px 0 8px}.auth-card input{height:48px;background:#fff;border-radius:8px}.auth-card #login-submit{height:48px;padding:0;border-radius:8px;font-size:15px;font-weight:600;cursor:pointer}.auth-card #login-submit:disabled{opacity:.6}
.auth-card #login-error{color:#b91c1c;font-size:12px;margin:8px 0 16px;min-height:18px}.auth-card .auth-switch{text-align:center;font-size:13px;margin:22px 0 0}.auth-switch a{color:var(--accent);font-weight:600;text-decoration:none;margin-left:4px}.auth-switch a:hover{text-decoration:underline}.auth-card small{text-align:center;font-size:11px;margin-top:42px;color:var(--muted)}
@media(max-width:540px){.auth-page{padding:32px}.auth-card{width:100%;max-width:360px;padding:0}}

/* Shared visual hierarchy: neutral surfaces, blue for actions and selection. */
:root{--accent-hover:#1d4ed8;--focus:#93c5fd;--error:#b91c1c}
button,a,input,select{transition:background-color 150ms ease,border-color 150ms ease,color 150ms ease,box-shadow 150ms ease}
a:focus-visible,input:focus-visible,select:focus-visible,button:focus-visible{outline:2px solid var(--focus);outline-offset:3px}
input::placeholder,textarea::placeholder{color:#a1a1aa}
.brand{color:var(--ink)}.brand-sub{letter-spacing:1px}.eyebrow{color:var(--muted);letter-spacing:2px}
header{background:var(--surface)}.main-menu button:hover{background:#e4e4e7;color:var(--ink)}.main-menu button.selected{background:#eaf1ff;color:var(--accent)}
nav button.active{background:var(--soft);color:var(--accent)}.model-pill{background:#f4f4f5;color:var(--muted);border-color:var(--line)}
.module-intro{margin-bottom:36px}.module-intro h1{font-size:32px;letter-spacing:-.8px}.module-intro p{line-height:1.7}.module-intro .eyebrow{font-size:10px}.site-groups{gap:32px}.site-group-heading{margin-bottom:12px}.site-group-heading>span{background:#f4f4f5}.site-row{padding:15px 0}.star{color:#a1a1aa}.star[aria-pressed=true],.star:hover{color:var(--accent)}
.environment-links a{background:#f4f4f5;color:#52525b}.environment-links a:hover{background:var(--soft);color:var(--accent)}.environment-links .production{background:#fff7ed;color:#9a3412}
.tabs button:hover{background:#f4f4f5;color:var(--ink)}.tabs button.selected{color:var(--accent);background:var(--soft)}
.primary:hover,.new:hover,#send:hover,#quick-send:hover,#quick-toggle:hover,.auth-card #login-submit:hover{background:var(--accent-hover)!important}
#composer:focus-within{border-color:var(--focus);box-shadow:0 0 0 3px #2563eb0a}.message.user,.quick-message.user .body{background:#f4f4f5}
#quick-toggle{width:48px;height:48px}#quick-panel{border-radius:14px}.quick-heading{padding:20px}.quick-heading p{margin-top:6px}.quick-heading button:hover{color:var(--ink)}
.auth-page{background:var(--bg);min-height:100dvh;height:auto;overflow:auto;padding:112px 24px 72px;align-items:center}
.auth-brand{position:absolute;top:32px;left:40px;margin:0;font-size:25px;letter-spacing:-1px;color:var(--ink)}.auth-brand span{font-size:14px;margin-left:5px}
.auth-card{margin:auto;width:360px;transform:translateY(-16px)}.auth-card h1{font-size:30px;font-weight:600;line-height:1.3;letter-spacing:-.6px;margin:0 0 12px}.auth-card .auth-description{margin:0 0 32px;line-height:1.6}.auth-card label{font-size:13px;font-weight:500;margin:20px 0 8px}.auth-card input{font-size:16px;border-radius:8px;background:white;outline:none}.auth-card input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px #2563eb12}.auth-card input[aria-invalid=true]{border-color:var(--error)}
.auth-card #login-submit{margin-top:20px}.auth-card #login-error{min-height:0;margin:10px 0 0;line-height:1.5}.auth-card #login-error:empty{display:none}.auth-card .auth-switch{margin-top:24px}.auth-card small{margin-top:40px;line-height:1.6;font-size:12px}
@media(max-width:540px){.auth-page{padding:104px 24px 48px}.auth-brand{top:28px;left:24px}.auth-card{transform:none}.module-intro h1{font-size:28px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}

.system-filter-toggle{display:inline-flex;align-items:center;gap:8px;white-space:nowrap;flex-shrink:0}
.system-filter-track{width:30px;height:18px;border-radius:12px;background:#94a3b8;position:relative;transition:background .15s}
.system-filter-track::after{content:"";position:absolute;width:14px;height:14px;top:2px;left:2px;border-radius:50%;background:white;transition:transform .15s}
.system-filter-toggle[aria-checked="true"] .system-filter-track{background:#2563eb}
.system-filter-toggle[aria-checked="true"] .system-filter-track::after{transform:translateX(12px)}