:root,[data-theme=light]{--bg: #f4f5f7;--surface: #ffffff;--text: #0f172a;--muted: #64748b;--border: #e2e8f0;--accent: #2563eb;--accent-hover: #1d4ed8;--danger: #dc2626;--sidebar: #ecfdf5}[data-theme=dark]{--bg: #0b1120;--surface: #111827;--text: #f1f5f9;--muted: #94a3b8;--border: #1e293b;--accent: #34d399;--accent-hover: #6ee7b7;--danger: #f87171;--sidebar: #064e3b}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}a{color:var(--accent);text-decoration:none}a:hover{color:var(--accent-hover)}.app-shell{min-height:100%;display:flex;flex-direction:column}.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 1.25rem;border-bottom:1px solid var(--border);background:var(--surface)}.topbar-brand{min-width:0}.boyko-mark__plate{fill:color-mix(in srgb,var(--accent) 28%,transparent)}.boyko-mark__glyph{fill:var(--accent)}.boyko-brand{display:inline-flex;align-items:center;gap:.55rem}.boyko-brand--hero{flex-direction:column;align-items:center;gap:.45rem}.boyko-brand__mark{width:1.85rem;height:1.85rem;flex-shrink:0}.boyko-brand--hero .boyko-brand__mark{width:3rem;height:3rem}.boyko-brand__titles{display:flex;flex-direction:column;align-items:flex-start;gap:.05rem;line-height:1.15;text-align:left}.boyko-brand--hero .boyko-brand__titles{align-items:center;text-align:center}.boyko-brand--inline .boyko-brand__titles{flex-direction:row;flex-wrap:wrap;align-items:baseline;gap:.35rem .5rem}.boyko-brand__company{font-weight:700;font-size:1rem;letter-spacing:-.03em;color:var(--text)}.boyko-brand--hero .boyko-brand__company{font-size:1.35rem}.boyko-brand__dot{color:var(--accent)}.boyko-brand__product{font-size:.78rem;font-weight:500;color:var(--muted)}.boyko-brand--inline .boyko-brand__product:before{content:"·";margin-right:.35rem;color:var(--muted);font-weight:400}.boyko-brand--hero .boyko-brand__product{font-size:.9rem}.boyko-brand--hero .boyko-brand__product:before{display:none}.login-brand{margin-bottom:1.25rem}.login-brand .boyko-brand--hero{justify-content:center}.topbar nav{display:flex;gap:1rem;align-items:center}.topbar nav a.active{font-weight:600;color:var(--text)}.layout-main{flex:1;display:flex;min-height:0}.sidebar{width:220px;flex-shrink:0;padding:1rem;border-right:1px solid var(--border);background:var(--sidebar)}.content{flex:1;padding:1.25rem;overflow:auto}.panel{background:var(--surface);border:1px solid var(--border);border-radius:8px;padding:1rem;max-width:720px}.muted{color:var(--muted);font-size:.9rem}.btn{display:inline-flex;align-items:center;gap:.35rem;padding:.45rem .85rem;border-radius:6px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;font-size:.875rem}.btn-primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.list-placeholder{list-style:none;padding:0;margin:0}.list-placeholder li{padding:.75rem;border-bottom:1px solid var(--border)}.list-placeholder li:last-child{border-bottom:none}.home-hero{max-width:560px;margin:3rem auto;text-align:center}.home-hero h2{margin-top:0}.field{display:flex;flex-direction:column;gap:.35rem;margin-bottom:.85rem}.field span{font-size:.85rem;color:var(--muted)}.field input{padding:.5rem .65rem;border-radius:6px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:.95rem}.field-password-wrap{position:relative;width:100%}.field-password-wrap input{width:100%;padding:.5rem 2.5rem .5rem .65rem;border-radius:6px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:.95rem}.btn-password-toggle{position:absolute;right:.25rem;top:50%;transform:translateY(-50%);display:inline-flex;align-items:center;justify-content:center;width:2.25rem;height:2.25rem;padding:0;border:none;border-radius:6px;background:transparent;color:var(--muted);cursor:pointer}.btn-password-toggle:hover{color:var(--text);background:color-mix(in srgb,var(--border) 50%,transparent)}.form-error{color:var(--danger);font-size:.9rem;margin:0 0 .75rem}.form-actions{margin-top:.5rem}.btn-ghost{background:transparent;border:none;color:var(--accent);cursor:pointer;font-size:.875rem;padding:.35rem .5rem}.btn-ghost:hover{color:var(--accent-hover)}.conv-list{list-style:none;padding:0;margin:0}.conv-list li{padding:.65rem 0;border-bottom:1px solid var(--border)}.chat-panel{max-width:720px}.chat-messages{border:1px solid var(--border);border-radius:8px;padding:.75rem;min-height:200px;max-height:55vh;overflow:auto;background:var(--bg);margin-bottom:.75rem}.chat-bubble{margin-bottom:.75rem;padding:.5rem .65rem;border-radius:8px;max-width:92%}.chat-bubble.user{background:var(--sidebar);margin-right:auto}.chat-bubble.op{background:color-mix(in srgb,var(--accent) 18%,var(--surface));margin-left:auto}.chat-meta{font-size:.75rem;color:var(--muted);margin-bottom:.25rem}.chat-body{white-space:pre-wrap;word-break:break-word}.chat-form{display:flex;gap:.5rem}.chat-form input{flex:1;padding:.5rem .65rem;border-radius:6px;border:1px solid var(--border);background:var(--surface);color:var(--text)}