:root{--arena-bg: #FAFAF7;--arena-ink: #101418;--arena-muted: #5A6472;--arena-accent: #0E7490;--arena-accent-ink: #FFFFFF;--arena-hot: #E11D48;--arena-gold: #B45309;--arena-card: #FFFFFF;--arena-line: #E4E4DC;--arena-wash: #EFF6F8;--arena-mono: ui-monospace, SFMono-Regular, Menlo, monospace;--arena-radius: 14px;--arena-shadow: 0 1px 1px rgba(16, 20, 24, .03), 0 6px 18px rgba(16, 20, 24, .05), 0 24px 60px rgba(14, 116, 144, .07);--arena-shadow-lift: 0 2px 3px rgba(16, 20, 24, .04), 0 14px 34px rgba(16, 20, 24, .08), 0 40px 90px rgba(14, 116, 144, .1);--arena-ease: cubic-bezier(.32, .72, 0, 1)}.arena-surface{background:var(--arena-bg);color:var(--arena-ink);min-height:100dvh;font-size:16px;line-height:1.55}.arena-container{max-width:1440px;margin:0 auto;padding:0 32px}body:has(.arena-surface){background:var(--arena-bg)}.arena-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:18px}.arena-scenario{padding:22px;border-top:3px solid var(--accent, 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arena-check-pop{0%{transform:scale(.9)}45%{transform:scale(1.3)}to{transform:scale(1)}}.arena-tag-you{margin-left:8px}.arena-prio{margin-left:8px;font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em}.arena-prio--critical{color:var(--arena-hot)}.arena-prio--high{color:var(--arena-gold)}.arena-prio--medium{color:var(--arena-muted)}.arena-task .arena-linkbtn{margin-top:6px}.arena-chat{display:flex;flex-direction:column;height:calc(100dvh - 240px);min-height:420px}.arena-chat-topic{padding:10px 14px;background:var(--arena-wash);border:1px solid var(--arena-line);border-radius:10px;margin-bottom:10px;display:flex;gap:10px;align-items:center}.arena-chat-box{flex:1;padding:8px 4px}.arena-chat-inputrow{display:flex;gap:10px;padding-top:10px;border-top:1px solid var(--arena-line)}.arena-chat-input{flex:1}.arena-chat-footrow{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:6px 2px 0}.arena-fail{padding:16px 20px;margin:10px 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4px}.arena-rail-backdrop{display:none}@media(max-width:959px){.arena-shell{display:block}.arena-rail-toggle{display:inline-flex;margin-bottom:16px}.arena-rail-close{display:inline-flex}.arena-rail{position:fixed;top:0;left:0;bottom:0;z-index:60;width:min(80vw,300px);height:100dvh;overflow-y:auto;border-radius:0;margin:0;transform:translate(-100%);transition:transform .24s var(--arena-ease)}.arena-rail--open{transform:translate(0)}.arena-rail-backdrop{display:block;position:fixed;inset:0;z-index:55;background:#10141870;opacity:0;pointer-events:none;transition:opacity .24s var(--arena-ease)}.arena-rail-backdrop--open{opacity:1;pointer-events:auto}}@media(max-width:959px)and (prefers-reduced-motion:reduce){.arena-rail{transform:none;opacity:0;visibility:hidden;transition:opacity .2s ease,visibility .2s ease}.arena-rail--open{opacity:1;visibility:visible}.arena-rail-backdrop{transition:opacity .2s ease}}