:root{--ink:#17202a;--muted:#647080;--paper:#f5f3ee;--card:#fff;--accent:#7d2882;--accent2:#b65abb;--line:#ded9d0}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;background:var(--paper);color:var(--ink);font-family:Inter,"PingFang SC","Microsoft YaHei",sans-serif}body{padding-top:72px}.topbar{position:fixed;z-index:1000;top:0;right:0;left:0;height:72px;padding:0 max(5vw,24px);display:flex;align-items:center;justify-content:space-between;background:#17202a;color:#fff;box-shadow:0 4px 18px #17202a24}.brand{font-weight:800;font-size:20px;color:#fff;text-decoration:none}.brand span{color:#dc8ee0}.topbar nav{display:flex;gap:24px}.topbar nav a{color:#dfe4e8;text-decoration:none;font-size:14px}main{max-width:1180px;margin:auto;padding:42px 28px 72px}.hero{padding:56px 0 38px;max-width:820px}.eyebrow{color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.16em}.hero h1,.admin-head h1,.panel h1{font-family:Georgia,"Noto Serif SC",serif;font-size:clamp(38px,6vw,70px);line-height:1.06;margin:14px 0}.hero>p:last-child{font-size:18px;color:var(--muted)}.chat-shell,.panel{background:var(--card);border:1px solid var(--line);box-shadow:0 18px 50px #17202a12;padding:26px}.messages{min-height:260px;max-height:540px;overflow:auto;display:flex;flex-direction:column;gap:14px;padding:8px}.message{max-width:82%;padding:14px 17px;border-radius:16px;white-space:pre-wrap;line-height:1.65;background:#f0edf1}.message.user{align-self:flex-end;background:var(--accent);color:#fff}.message.error{border:1px solid #bd4b4b}.composer{display:grid;grid-template-columns:1fr auto;gap:12px;margin-top:20px}.composer textarea,input,select{width:100%;border:1px solid var(--line);border-radius:8px;padding:12px;background:#fff;font:inherit}.composer textarea{resize:vertical}button{border:0;border-radius:8px;padding:12px 22px;background:var(--accent);color:#fff;font-weight:700;cursor:pointer}button:disabled{opacity:.5}.status{color:var(--muted);font-size:13px}.narrow{max-width:520px;margin:70px auto}.narrow h1{font-size:42px}.alert{padding:12px 16px;border-radius:8px;background:#ffe8e8;color:#8d2424}.alert.success{background:#e7f6ec;color:#246738}.admin-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:28px}.admin-head h1{font-size:48px}.admin-head a,.section-title a{color:var(--accent)}.metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:22px}.metrics article{background:#17202a;color:#fff;padding:22px}.metrics span{display:block;color:#aeb8c2;font-size:13px}.metrics strong{display:block;font-size:30px;margin-top:8px}.panel{margin-bottom:22px}.panel h2{margin-top:0}.settings-form{display:grid;gap:16px}.settings-form.grid{grid-template-columns:repeat(2,1fr)}.settings-form label{font-size:13px;font-weight:700;color:#47515e}.settings-form label input,.settings-form label select{margin-top:7px;font-weight:400}.settings-form button{justify-self:start}.section-title{display:flex;justify-content:space-between;align-items:center}.table-wrap{overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px}th,td{text-align:left;border-bottom:1px solid var(--line);padding:11px 9px}th{color:var(--muted)}
@media(max-width:760px){.topbar nav{gap:12px}.metrics,.settings-form.grid{grid-template-columns:1fr 1fr}.composer{grid-template-columns:1fr}.message{max-width:94%}}@media(max-width:520px){main{padding:28px 16px}.metrics,.settings-form.grid{grid-template-columns:1fr}.topbar{padding:0 16px}.topbar nav a:first-child{display:none}}
.quick-prompts{margin:22px 8px 0;padding-top:18px;border-top:1px solid var(--line)}
.quick-prompts>p{margin:0 0 11px;color:var(--muted);font-size:13px}
.prompt-list{display:flex;flex-wrap:wrap;gap:9px}
.prompt-chip{padding:9px 13px;border:1px solid #d8c2da;border-radius:999px;background:#fbf7fb;color:var(--accent);font-size:13px;font-weight:600;transition:background .15s,border-color .15s,transform .15s}
.prompt-chip:hover{background:#f1e4f2;border-color:var(--accent);transform:translateY(-1px)}
.prompt-chip:focus-visible{outline:3px solid #d8a6dc;outline-offset:2px}
.composer textarea:focus{outline:3px solid #e5c6e7;border-color:var(--accent)}
.message.assistant{white-space:normal}
.message.assistant h1,.message.assistant h2,.message.assistant h3,.message.assistant h4{margin:1em 0 .45em;line-height:1.3;color:#27182a}
.message.assistant h1:first-child,.message.assistant h2:first-child,.message.assistant h3:first-child{margin-top:0}
.message.assistant h1{font-size:1.45rem}.message.assistant h2{font-size:1.25rem}.message.assistant h3{font-size:1.08rem}
.message.assistant p{margin:.55em 0}.message.assistant ul,.message.assistant ol{margin:.55em 0;padding-left:1.4em}.message.assistant li{margin:.3em 0}
.message.assistant strong{color:#512056}.message.assistant code{padding:.12em .36em;border-radius:4px;background:#e6e0e7;font-family:"SFMono-Regular",Consolas,monospace;font-size:.9em}
.message.assistant a{color:var(--accent);font-weight:650;text-decoration:underline;text-underline-offset:2px}
.message.assistant.generating{width:max-content;min-width:132px}
.generating-indicator{display:inline-flex;align-items:center;gap:9px;color:var(--muted);font-size:14px}
.spinner{width:17px;height:17px;border:2px solid #d7c9d8;border-top-color:var(--accent);border-radius:50%;animation:message-spin .75s linear infinite}
@keyframes message-spin{to{transform:rotate(360deg)}}
@media(prefers-reduced-motion:reduce){.spinner{animation-duration:1.8s}}
.message.assistant pre{overflow:auto;margin:.8em 0;padding:14px;border-radius:9px;background:#1e1820;color:#f8eef9}.message.assistant pre code{padding:0;background:none;color:inherit}
.message.assistant blockquote{margin:.8em 0;padding:.4em .9em;border-left:4px solid var(--accent);background:#fff;color:#59616c}
.md-table-wrap{max-width:100%;overflow:auto;margin:.85em 0}.message.assistant table{min-width:480px;background:#fff}.message.assistant th{background:#eee5ef;color:#512056}.message.assistant th,.message.assistant td{padding:8px 10px}
.chat-page{height:100vh;overflow:hidden}
.chat-page main{height:calc(100vh - 72px);padding:18px 28px 22px;display:grid;grid-template-rows:auto minmax(0,1fr);gap:14px}
.chat-page .hero{padding:0;max-width:none}
.chat-page .hero .eyebrow{margin:0 0 5px}
.chat-page .hero h1{margin:0;font-size:clamp(25px,3.4vw,43px)}
.chat-page .hero>p:last-child{margin:7px 0 0;font-size:15px}
.chat-page .chat-shell{min-height:0;padding:18px;display:flex;flex-direction:column;overflow:hidden}
.chat-page .messages{min-height:0;max-height:none;flex:1;overscroll-behavior:contain;scrollbar-gutter:stable}
.chat-page .quick-prompts{flex:none;margin-top:12px;padding-top:12px}
.chat-page .composer{flex:none;margin-top:12px}
.chat-page .composer textarea{min-height:62px;max-height:96px}
.chat-page .status{flex:none;min-height:18px;margin:7px 4px 0}
@media(max-height:760px){.chat-page .hero>p:last-child{display:none}.chat-page .hero h1 br{display:none}.chat-page .quick-prompts>p{display:none}.chat-page .prompt-chip{padding:7px 10px}.chat-page main{padding-top:12px;gap:10px}}
@media(max-width:500px){.chat-page .hero{display:none}.chat-page main{grid-template-rows:minmax(0,1fr);padding-top:12px}}