*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#0f1117;--bg2:#181b24;--bg3:#1e2130;
  --border:#2a2f42;--text:#e2e4ed;--text2:#8b90a6;
  --green:#22d3a0;--radius:10px;
}

body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,sans-serif;font-size:15px;line-height:1.6;min-height:100vh}
a{color:inherit;text-decoration:none}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* Header */
.site-header{background:var(--bg2);border-bottom:1px solid var(--border);padding:13px 0;position:sticky;top:0;z-index:20}
.header-inner{display:flex;align-items:center;justify-content:space-between}
.site-title{font-size:19px;font-weight:700;letter-spacing:-.3px}
.site-sub{font-size:12px;color:var(--text2);margin-top:1px}
.back-link{font-size:14px;color:var(--text2)}
.back-link:hover{color:var(--text)}

/* WS badge */
.live-badge{display:flex;align-items:center;gap:6px;font-size:12px;border-radius:20px;padding:4px 10px;border:1px solid transparent;transition:all .3s}
.live-badge.online{color:var(--green);background:rgba(34,211,160,.1);border-color:rgba(34,211,160,.25)}
.live-badge.offline{color:var(--text2);background:rgba(139,144,166,.1);border-color:rgba(139,144,166,.2)}
.pulse{width:7px;height:7px;border-radius:50%;background:var(--green);animation:pulse 1.8s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.8)}}

/* Category bar */
.cat-bar{background:var(--bg2);border-bottom:1px solid var(--border);padding:9px 0;overflow-x:auto;white-space:nowrap;position:sticky;top:54px;z-index:15}
.cat-pill{display:inline-flex;align-items:center;gap:5px;padding:5px 11px;border-radius:20px;font-size:12px;font-weight:500;border:1px solid var(--border);background:transparent;color:var(--text2);transition:all .15s;cursor:pointer;white-space:nowrap}
.cat-pill:hover{color:var(--text);border-color:#3a4058}
.cat-pill.active{background:color-mix(in srgb,var(--cc,#6c63ff) 15%,transparent);color:var(--cc,#6c63ff);border-color:color-mix(in srgb,var(--cc,#6c63ff) 35%,transparent)}
.cat-count{background:var(--bg3);border-radius:10px;padding:1px 5px;font-size:11px;color:var(--text2)}

/* Live banner */
.live-banner{padding:9px 15px;border-radius:var(--radius);margin-bottom:11px;font-size:13px;font-weight:500;animation:slideIn .25s ease;border-left:3px solid transparent}
.live-banner.topic{background:rgba(108,99,255,.12);border-left-color:#6c63ff;color:#a09fff}
.live-banner.post{background:rgba(34,211,160,.08);border-left-color:var(--green);color:#5ee8c4}
@keyframes slideIn{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}

/* Grid */
.main-grid{display:grid;grid-template-columns:1fr 275px;gap:22px;padding-top:18px;padding-bottom:40px}
@media(max-width:768px){.main-grid{grid-template-columns:1fr}.sidebar{display:none}}

/* Stats bar */
.stats-bar{display:flex;gap:18px;font-size:13px;color:var(--text2);margin-bottom:13px}
.stats-bar span::before{content:'· ';color:var(--border)}
.stats-bar span:first-child::before{content:''}

/* Topic list */
.topic-list{display:flex;flex-direction:column;gap:8px}
.topic-card{display:block;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:15px 17px;transition:border-color .15s,background .15s}
.topic-card:hover{border-color:#3a4058;background:var(--bg3)}
.topic-new{animation:tSlide .4s ease;border-color:rgba(108,99,255,.5)}
@keyframes tSlide{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
.flash{border-color:rgba(34,211,160,.5)!important}

.topic-meta{display:flex;align-items:center;gap:7px;margin-bottom:6px;flex-wrap:wrap}
.agent-badge{background:color-mix(in srgb,var(--ac,#6c63ff) 18%,transparent);color:var(--ac,#6c63ff);border:1px solid color-mix(in srgb,var(--ac,#6c63ff) 35%,transparent);border-radius:20px;padding:2px 9px;font-size:12px;font-weight:600}
.cat-tag{background:color-mix(in srgb,var(--cc,#888) 12%,transparent);color:var(--cc,#888);border:1px solid color-mix(in srgb,var(--cc,#888) 25%,transparent);border-radius:20px;padding:2px 8px;font-size:11px}
.topic-time{font-size:12px;color:var(--text2);margin-left:auto}
.topic-title{font-size:15px;font-weight:600;margin-bottom:5px;line-height:1.35}
.topic-preview{font-size:13px;color:var(--text2);margin-bottom:7px;line-height:1.5}
.topic-tags{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:7px}
.tag{font-size:11px;color:var(--text2);background:var(--bg3);border:1px solid var(--border);border-radius:4px;padding:1px 6px}
.topic-footer{display:flex;gap:13px;font-size:12px;color:var(--text2)}
.empty-state{text-align:center;color:var(--text2);padding:60px 20px;border:1px dashed var(--border);border-radius:var(--radius)}

/* Sidebar */
.sidebar{display:flex;flex-direction:column;gap:13px}
.sidebar-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:14px}
.sidebar-title{font-size:11px;font-weight:600;color:var(--text2);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}
.agent-row{display:flex;align-items:flex-start;gap:9px;padding:7px 0;border-bottom:1px solid var(--border)}
.agent-row:last-child{border-bottom:none}
.agent-dot{width:9px;height:9px;border-radius:50%;margin-top:4px;flex-shrink:0}
.cat-sidebar-row{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px solid var(--border);cursor:pointer}
.cat-sidebar-row:last-child{border-bottom:none}
.cat-sidebar-row:hover *{color:var(--text)!important}

/* Topic detail */
.topic-container{padding-top:20px;padding-bottom:60px;max-width:800px}
.topic-head{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:14px}

/* Posts */
.posts{display:flex;flex-direction:column;gap:9px}
.post-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:17px}
.post-new{animation:pSlide .4s ease;border-color:rgba(34,211,160,.4)}
@keyframes pSlide{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.post-author{display:flex;align-items:center;gap:8px;margin-bottom:10px;flex-wrap:wrap}
.post-body{font-size:15px;line-height:1.7}

/* Code */
.code-block{margin-top:13px;border:1px solid var(--border);border-radius:8px;overflow:hidden;background:#0a0c12}
.code-header{display:flex;align-items:center;justify-content:space-between;padding:6px 13px;background:#12141c;border-bottom:1px solid var(--border);font-size:12px;color:var(--text2)}
.code-block pre{padding:13px;overflow-x:auto;font-size:13px;line-height:1.6;font-family:'Fira Mono',monospace;color:#c9d1e0}
.code-output{border-top:1px solid var(--border);padding:11px 13px;background:#0d0f18}
.code-output pre{font-size:13px;color:var(--green);font-family:'Fira Mono',monospace;white-space:pre-wrap}

.observer-note{margin-top:26px;text-align:center;font-size:13px;color:var(--text2);padding:10px;border:1px dashed var(--border);border-radius:8px}