:root{--bh-bg: #07070a;--bh-bg-elev: #0b0c10;--bh-card: #0f1016;--bh-card-2: #13141c;--bh-border: rgba(255, 255, 255, .08);--bh-border-2: rgba(255, 255, 255, .12);--bh-text: #e7e7ee;--bh-text-2: rgba(231, 231, 238, .78);--bh-text-3: rgba(231, 231, 238, .56);--bh-accent: #fc4d50;--bh-accent-2: #ff3d7f;--bh-r-lg: 18px;--bh-r-xl: 24px;--bh-shadow: 0 20px 60px rgba(0, 0, 0, .55);--bh-shadow-soft: 0 12px 30px rgba(0, 0, 0, .38)}.bh-surface{background:linear-gradient(180deg,#0f101694,#0f10166b);border:1px solid rgba(255,255,255,.1);box-shadow:0 18px 46px #0000006b;-webkit-backdrop-filter:blur(16px) saturate(1.15);backdrop-filter:blur(16px) saturate(1.15)}.bh-surface-strong{background:linear-gradient(180deg,#0f1016b8,#0f10168f);border:1px solid rgba(255,255,255,.12);box-shadow:var(--bh-shadow);-webkit-backdrop-filter:blur(20px) saturate(1.25);backdrop-filter:blur(20px) saturate(1.25)}.bh-card{background:linear-gradient(180deg,#13141cd9,#0f1016d9);border:1px solid var(--bh-border);border-radius:var(--bh-r-xl);box-shadow:var(--bh-shadow-soft)}.bh-card:hover{border-color:#fc4d5052;box-shadow:0 18px 46px #0000007a,0 0 0 1px #fc4d5024}.bh-chip{background:#ffffff0a;border:1px solid rgba(255,255,255,.08);color:var(--bh-text-2);border-radius:999px}.bh-badge{background:#0000008c;border:1px solid rgba(255,255,255,.1);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:10px}.bh-icon-btn{border-radius:14px;border:1px solid rgba(255,255,255,.08);background:#ffffff08;transition:background .18s ease,border-color .18s ease,transform .18s ease}.bh-icon-btn:hover{background:#ffffff0f;border-color:#ffffff1f}.bh-btn-primary{background:linear-gradient(135deg,#fc4d50f5,#ff3d7fc7);border:1px solid rgba(252,77,80,.25);box-shadow:0 16px 40px #fc4d502e;transition:filter .18s ease,box-shadow .18s ease,transform .18s ease}.bh-btn-primary:hover{filter:brightness(1.05);box-shadow:0 18px 46px #fc4d5038}.bh-btn-primary:disabled{filter:grayscale(.2)}.bh-btn-secondary{background:#ffffff0a;border:1px solid rgba(255,255,255,.1);transition:background .18s ease,border-color .18s ease}.bh-btn-secondary:hover{background:#ffffff0f;border-color:#ffffff29}.bh-input{background:#0f1016b3;border:1px solid rgba(255,255,255,.1);box-shadow:inset 0 1px #ffffff0a}.bh-input:focus{border-color:#fc4d508c}.bh-bubble-model{background:#0f1016b8;border:1px solid rgba(255,255,255,.1);box-shadow:0 14px 34px #0006;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.bh-bubble-user{background:#ffffff0f;border:1px solid rgba(255,255,255,.1);box-shadow:0 14px 34px #00000052}.bh-avatar-accent{background:linear-gradient(135deg,#fc4d50f5,#ff3d7fc7);box-shadow:0 14px 38px #fc4d5024}html,body{height:100%}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,"Apple Color Emoji","Segoe UI Emoji";background:radial-gradient(1200px 700px at 20% 10%,rgba(252,77,80,.18),transparent 55%),radial-gradient(1100px 650px at 90% 25%,rgba(255,61,127,.1),transparent 58%),radial-gradient(900px 550px at 50% 90%,rgba(252,77,80,.08),transparent 62%),linear-gradient(180deg,rgba(255,255,255,.03),transparent 30%),var(--bh-bg);color:var(--bh-text);overflow:hidden}::selection{background:#fc4d5059;color:#fff}:focus-visible{outline:2px solid rgba(252,77,80,.8);outline-offset:2px}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#e7e7ee29;border-radius:999px;border:2px solid rgba(0,0,0,0);background-clip:padding-box}::-webkit-scrollbar-thumb:hover{background:#e7e7ee47;border:2px solid rgba(0,0,0,0);background-clip:padding-box}*{scrollbar-width:thin;scrollbar-color:rgba(231,231,238,.22) transparent}.scrollbar-hide::-webkit-scrollbar{display:none}.scrollbar-hide{-ms-overflow-style:none;scrollbar-width:none}.bh-clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.bh-clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}@keyframes bh-fade-up{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@keyframes bh-fade-left{0%{opacity:0;transform:translate(-10px)}to{opacity:1;transform:translate(0)}}@keyframes bh-pop{0%{opacity:0;transform:scale(.98)}to{opacity:1;transform:scale(1)}}@keyframes bh-shimmer{0%{transform:translate(-120%)}to{transform:translate(120%)}}.bh-anim-fade-up{animation:bh-fade-up .26s cubic-bezier(.2,.8,.2,1) both}.bh-anim-fade-left{animation:bh-fade-left .26s cubic-bezier(.2,.8,.2,1) both}.bh-anim-pop{animation:bh-pop .22s cubic-bezier(.2,.8,.2,1) both}.bh-skeleton{position:relative;overflow:hidden;background:#ffffff0a;border:1px solid rgba(255,255,255,.06);border-radius:14px}.bh-skeleton:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(90deg,#fff0,#ffffff14 45%,#fff0);width:60%;transform:translate(-120%);animation:bh-shimmer 1.1s ease-in-out infinite}.bh-skeleton-line{height:12px;border-radius:999px}.bh-skeleton-bubble{border-radius:24px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}}.markdown-body ul{list-style-type:disc;padding-left:1.5em;margin-bottom:.5em}.markdown-body ol{list-style-type:decimal;padding-left:1.5em;margin-bottom:.5em}.markdown-body strong{font-weight:700;color:#fff}.markdown-body a{color:var(--bh-accent);text-decoration:underline}.markdown-body p{margin-bottom:.75em}.cursor-grabbing{cursor:grabbing!important}