:root{--bg:#f6f8fc;--surface:#fff;--surface2:#f8fafc;--text:#101828;--muted:#667085;--line:#e4e7ec;--primary:#635bff;--cyan:#06b6d4;--green:#10b981;--red:#ef4444;--shadow:0 8px 28px rgba(16,24,40,.07);--radius:20px;color-scheme:light}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;background:var(--bg);color:var(--text)}body.dark{--bg:#0b111a;--surface:#121a25;--surface2:#172231;--text:#f8fafc;--muted:#98a6b8;--line:rgba(255,255,255,.1);--shadow:0 12px 35px rgba(0,0,0,.24);color-scheme:dark}a{color:inherit;text-decoration:none}.topbar{height:72px;position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:26px;padding:0 max(20px,calc((100% - 1180px)/2));background:color-mix(in srgb,var(--surface) 88%,transparent);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;font-size:19px;min-width:max-content}.brand span{width:40px;height:40px;border-radius:13px;display:grid;place-items:center;color:#fff;background:linear-gradient(135deg,var(--primary),var(--cyan))}.topbar nav{display:flex;align-items:center;gap:5px;flex:1}.topbar nav a{padding:9px 12px;border-radius:11px;color:var(--muted);font-weight:700;font-size:14px}.topbar nav a:hover,.topbar nav a.active{background:var(--surface2);color:var(--text)}.top-actions{display:flex;align-items:center;gap:8px}.top-actions button{width:40px;height:40px;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:12px;cursor:pointer}.login-link{padding:10px 15px;border-radius:11px;background:var(--text);color:var(--surface);font-weight:800;font-size:14px}.forum-page{width:min(1120px,calc(100% - 32px));margin:0 auto;padding:42px 0 56px}.forum-head{display:flex;justify-content:space-between;align-items:end;gap:20px;margin-bottom:22px}.eyebrow{font-size:11px;font-weight:900;letter-spacing:.12em;color:var(--primary)}h1{font-size:clamp(30px,5vw,44px);line-height:1.05;margin:8px 0 10px;letter-spacing:-.04em}.forum-head p{margin:0;color:var(--muted);max-width:680px}.online-pill{padding:9px 13px;border:1px solid var(--line);background:var(--surface);border-radius:999px;color:var(--muted);font-size:13px;font-weight:800;white-space:nowrap}.online-pill i{font-size:8px;color:var(--green);margin-right:6px}.chat-shell{display:grid;grid-template-columns:290px minmax(0,1fr);min-height:650px;background:var(--surface);border:1px solid var(--line);border-radius:24px;box-shadow:var(--shadow);overflow:hidden}.chat-info{padding:28px;border-right:1px solid var(--line);background:linear-gradient(180deg,var(--surface2),var(--surface))}.community-avatar{width:58px;height:58px;border-radius:18px;display:grid;place-items:center;color:#fff;font-size:24px;background:linear-gradient(135deg,var(--primary),var(--cyan));box-shadow:0 12px 28px rgba(99,91,255,.2)}.chat-info h2{font-size:19px;margin:18px 0 7px}.chat-info p{font-size:13px;line-height:1.6;color:var(--muted);margin:0 0 13px}.status-pill{display:inline-flex;padding:7px 10px;border-radius:999px;background:rgba(16,185,129,.1);color:var(--green);font-size:12px;font-weight:800}.status-pill.closed{background:rgba(239,68,68,.1);color:var(--red)}.info-list{display:grid;gap:12px;margin-top:28px;padding-top:22px;border-top:1px solid var(--line)}.info-list div{display:flex;gap:10px;color:var(--muted);font-size:12px;line-height:1.4}.info-list 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12px;background:var(--surface2);border:1px solid var(--line);border-radius:5px 15px 15px 15px;font-size:13px;line-height:1.55;white-space:pre-wrap;word-break:break-word}.message.mine .body{background:rgba(99,91,255,.09);border-color:rgba(99,91,255,.16)}.message-actions{display:flex;gap:6px;margin-top:5px}.message-actions button{border:0;background:transparent;color:var(--muted);font-size:10px;cursor:pointer;padding:3px}.message-actions button:hover{color:var(--primary)}.loading-state,.empty-state{height:100%;min-height:300px;display:grid;place-items:center;align-content:center;gap:10px;color:var(--muted);font-size:13px}.loading-state i{font-size:20px;color:var(--primary)}.reply-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:9px 16px;background:var(--surface2);border-top:1px solid var(--line)}.reply-bar small{display:block;color:var(--muted);font-size:10px}.reply-bar 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a{margin-left:auto;font-weight:900;color:var(--primary)}.hidden{display:none!important}.closed-notice{margin:14px 16px 0;padding:12px 14px;border-radius:13px;background:rgba(239,68,68,.08);color:var(--red);font-size:12px;font-weight:700}.toast{position:fixed;right:18px;bottom:18px;z-index:50;padding:11px 14px;border-radius:12px;background:var(--text);color:var(--surface);font-size:12px;font-weight:700;box-shadow:var(--shadow);opacity:0;transform:translateY(10px);pointer-events:none;transition:.2s}.toast.show{opacity:1;transform:none}@media(max-width:780px){.topbar{padding:0 14px;gap:10px}.topbar nav{display:none}.forum-page{width:min(100% - 20px,1120px);padding-top:24px}.forum-head{align-items:start;flex-direction:column}.chat-shell{grid-template-columns:1fr;min-height:calc(100vh - 190px);border-radius:19px}.chat-info{display:none}.chat-panel{min-height:600px}.login-link{padding:9px 11px}.messages{padding:16px}.composer{padding:10px}.composer button span{display:none}.composer button{width:44px;padding:0}.bubble{max-width:calc(100vw - 105px)}}