:root{--bg: #f6f7f9;--surface: #ffffff;--surface-2: #eef0f4;--surface-hover: #e7eaf0;--surface-sunken: #f0f2f5;--text: #171b22;--text-dim: #5b6472;--text-muted: #838d9c;--border: #e2e5ec;--border-strong: #ccd2dc;--accent: #4f46e5;--accent-hover: #4338ca;--accent-soft: #eef0fe;--accent-text: #ffffff;--ok: #14804a;--warn: #9a6400;--danger: #c02626;--error-bg: #fdeeee;--error-text: #a81f1f;--user-bubble: #4f46e5;--user-text: #ffffff;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 22px;--shadow-sm: 0 1px 2px rgba(16, 24, 40, .05);--shadow-md: 0 4px 14px rgba(16, 24, 40, .08);--shadow-lg: 0 12px 32px rgba(16, 24, 40, .12);--shadow: var(--shadow-sm);--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--content-width: 1180px;--sidebar-width: 272px;--sidebar-rail-width: 68px;--topbar-height: 56px;--composer-max-width: 768px;--chat-max-width: 768px;--font-message: 17px;--font-message-user: 16px;--font-ui: 14.5px;--font-conv-title: 14.5px;--font-secondary: 13px;--font-meta: 12.5px;--font-section: 12px;--line-message: 1.62;--motion-instant: 90ms;--motion-fast: .15s;--motion-normal: .22s;--motion-slow: .3s;--ease-standard: cubic-bezier(.2, 0, 0, 1);--ease-emphasized: cubic-bezier(.05, .7, .1, 1);--ease-spring: cubic-bezier(.34, 1.32, .5, 1);color-scheme:light}:root[data-theme=dark]{--bg: #0f1115;--surface: #191c22;--surface-2: #21252d;--surface-hover: #272c35;--surface-sunken: #131620;--text: #e9ecf1;--text-dim: #9aa3b2;--text-muted: #79828f;--border: #2a2f39;--border-strong: #3a414d;--accent: #7c74ff;--accent-hover: #8f88ff;--accent-soft: #21203a;--accent-text: #ffffff;--ok: #4ecb8d;--warn: #e0a83a;--danger: #ff6b6b;--error-bg: #2e1c1c;--error-text: #ff9d94;--user-bubble: #4c46c9;--user-text: #ffffff;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .4);--shadow-md: 0 4px 16px rgba(0, 0, 0, .45);--shadow-lg: 0 12px 34px rgba(0, 0, 0, .55);--shadow: var(--shadow-sm);color-scheme:dark}*{box-sizing:border-box}html,body{margin:0;padding:0;max-width:100%}body{background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;line-height:1.55;overflow-x:hidden}html:has(.shell),html:has(.shell) body{height:100%;overflow:hidden;overscroll-behavior:none}.shell{max-width:100%;width:100%;margin:0 auto;height:100dvh;display:flex;flex-direction:column;min-width:0;overflow:hidden}.shell.drag{outline:3px dashed var(--accent);outline-offset:-6px;border-radius:12px}html[data-vv=on] .shell{height:var(--app-h, 100dvh)}.layout{flex:1;display:flex;min-height:0;min-width:0;max-width:100%}.main-col{flex:1;display:flex;flex-direction:column;min-width:0;min-height:0;max-width:100%;overflow:hidden}.main-col .chat{overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain}.sidebar{width:var(--sidebar-width);flex:none;border-right:1px solid var(--border);display:flex;flex-direction:column;background:var(--surface-sunken);min-height:0;overflow:hidden}.sidebar-brand{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);padding:14px var(--space-3) var(--space-2)}.btn.icon.sidebar-toggle,.btn.icon.sidebar-rail-btn{display:inline-grid;place-items:center;flex:none;min-width:44px;min-height:44px;height:44px;padding:0;background:none;color:var(--text-dim)}.btn.icon.sidebar-toggle:hover:not(:disabled),.btn.icon.sidebar-rail-btn:hover:not(:disabled){background:var(--surface-hover);color:var(--text)}.btn.icon.sidebar-toggle:focus-visible,.btn.icon.sidebar-rail-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn.icon.sidebar-toggle .action-icon,.btn.icon.sidebar-rail-btn .action-icon{width:19px;height:19px}.sidebar-rail{display:none;flex-direction:column;align-items:center;gap:4px;padding:0 8px var(--space-2)}.btn.icon.sidebar-rail-account{margin-top:auto;margin-bottom:var(--space-2)}@keyframes rail-in{0%{opacity:0}to{opacity:1}}.brand-button{display:inline-flex;align-items:center;min-width:0;max-width:100%;background:none;border:1px solid transparent;border-radius:var(--radius-md);color:var(--text);cursor:pointer;font:inherit;padding:4px 6px;transition:background var(--motion-fast) ease}.brand-button:hover:not(:disabled){background:var(--surface-hover)}.brand-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.brand-button:disabled{cursor:default;opacity:.6}.brand-lockup{display:inline-flex;align-items:center;gap:var(--space-2);min-width:0}.brand-mark{width:26px;height:26px;flex:none;color:var(--accent)}.brand-wordmark{font-size:16.5px;font-weight:650;letter-spacing:.1px;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.btn.sidebar-new-chat{display:flex;align-items:center;justify-content:center;gap:var(--space-2);margin:0 var(--space-3) var(--space-3);min-height:40px;padding:9px 14px;background:var(--accent);color:var(--accent-text);border-radius:var(--radius-md);font-size:14px;font-weight:600}.btn.sidebar-new-chat:hover:not(:disabled){background:var(--accent-hover)}.btn.sidebar-new-chat:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.btn.sidebar-new-chat .action-icon{width:17px;height:17px}.sidebar-head{display:flex;align-items:center;justify-content:space-between;padding:6px 14px 8px;font-size:var(--font-section);font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}.sidebar-foot{flex:none;border-top:1px solid var(--border);padding:var(--space-2) var(--space-3) var(--space-3);display:flex;flex-direction:column;gap:2px}.account-balance{display:flex;align-items:baseline;justify-content:space-between;gap:var(--space-2);padding:6px;min-width:0}.account-balance-label{color:var(--text-muted);font-size:var(--font-meta)}.account-balance-value{color:var(--text);font-size:var(--font-secondary);font-weight:600;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.account-section{min-width:0}.account-disclosure{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);width:100%;box-sizing:border-box;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-dim);cursor:pointer;font:inherit;font-size:var(--font-secondary);padding:8px 6px;text-align:left;list-style:none}.account-disclosure::-webkit-details-marker{display:none}.account-disclosure:hover{background:var(--surface-hover);color:var(--text)}.account-disclosure:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.account-disclosure .action-icon{width:15px;height:15px;flex:none}.account-section-body,.account-docs[open] .sidebar-links{padding-top:2px}.account-docs summary{cursor:pointer}.account-identity{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);padding:6px 6px 2px;min-width:0}.account-link-btn{background:none;border:none;border-radius:var(--radius-sm);color:var(--text-dim);cursor:pointer;font:inherit;font-size:var(--font-secondary);padding:8px 6px;text-align:left;width:100%}.account-link-btn:hover{background:var(--surface-hover);color:var(--text)}.account-link-btn:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.billing-slot{display:flex;flex-direction:column;gap:4px}.billing-note{color:var(--text-muted);font-size:var(--font-meta);line-height:1.35;padding:0 4px}.small-icon{font-size:15px;padding:4px 9px;height:auto}.sidebar-empty{color:var(--text-dim);font-size:13.5px;padding:8px 14px}.conv-search{padding:0 8px 8px}.conv-search-input{width:100%;box-sizing:border-box;min-width:0;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;color:var(--text);font:inherit;font-size:13.5px;padding:7px 10px}.conv-search-input::placeholder{color:var(--text-dim)}.conv-search-input:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.conv-search-status{color:var(--text-dim);font-size:12.5px;padding:0 14px 6px}.conv-found-head{color:var(--text-dim);font-size:11.5px;text-transform:uppercase;letter-spacing:.4px;padding:8px 10px 4px}.conv-found{display:flex;flex-direction:column;gap:2px;align-items:stretch;width:100%;box-sizing:border-box;min-width:0;border:none;background:none;cursor:pointer;text-align:left;font:inherit;color:var(--text);border-radius:10px;padding:8px 10px}.conv-found:hover{background:var(--surface-2)}.conv-found.active{background:var(--accent-soft)}.conv-found:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.conv-found:disabled{cursor:default;opacity:.6}.conv-found-title{min-width:0;font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-snippet{min-width:0;color:var(--text-dim);font-size:12px;line-height:1.35;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-list{flex:1 1 auto;min-height:0;overflow-y:auto;overflow-x:hidden;overscroll-behavior:contain;display:flex;flex-direction:column;gap:2px;padding:0 8px 12px}.conv-item{position:relative;display:flex;align-items:center;min-height:40px;border-radius:10px;transition:background var(--motion-fast) var(--ease-standard),box-shadow var(--motion-fast) var(--ease-standard)}.conv-item:hover{background:var(--surface-2)}.conv-item.active{background:var(--accent-soft);box-shadow:inset 3px 0 0 var(--accent)}.conv-title{flex:1;min-width:0;display:flex;align-items:center;gap:6px;text-align:left;border:none;background:none;cursor:pointer;font:inherit;font-size:var(--font-conv-title);color:var(--text);padding:9px 10px}.conv-title-text{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-pinned-dot{flex:none;color:var(--accent);font-size:11px;line-height:1}.conv-item.active .conv-title{font-weight:600}.conv-title:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.conv-delete{border:none;background:none;cursor:pointer;color:var(--text-dim);font-size:12px;padding:8px 10px;visibility:hidden;opacity:0;transition:opacity var(--motion-fast) var(--ease-standard)}.conv-delete:hover{color:var(--error-text)}.conv-more{position:static;flex:none}.conv-more-trigger{display:inline-grid;place-items:center;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-dim);cursor:pointer;padding:8px}.conv-more-trigger:hover:not(:disabled){color:var(--text);background:var(--surface-hover)}.conv-more-trigger:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.conv-more-trigger:disabled{cursor:default;opacity:.5}.conv-more-menu{position:absolute;z-index:30;right:6px;top:calc(100% - 4px);transform-origin:top right;animation:menu-in var(--motion-fast) var(--ease-standard);display:flex;flex-direction:column;gap:2px;min-width:176px;max-width:calc(100vw - 32px);padding:6px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg)}.conv-more-item{background:none;border:none;border-radius:var(--radius-sm);color:var(--text);cursor:pointer;font:inherit;font-size:var(--font-ui);min-height:44px;padding:8px 10px;text-align:left;width:100%}.conv-more-item:hover:not(:disabled){background:var(--surface-2)}.conv-more-item:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.conv-more-item:disabled{cursor:default;opacity:.5}.conv-more-item.danger{color:var(--error-text)}.chat-tools{display:flex;flex-direction:column;gap:6px;padding:6px max(var(--space-4),calc((100% - var(--chat-max-width)) / 2)) 0;max-width:100%;min-width:0}.chat-tools-row{display:flex;align-items:center;gap:2px;flex-wrap:wrap;min-width:0}.chat-tool{display:inline-flex;align-items:center;gap:6px;background:none;border:none;border-radius:var(--radius-sm);color:var(--text-muted);cursor:pointer;font:inherit;font-size:var(--font-meta);line-height:1.2;padding:6px 8px;transition:color var(--motion-fast) ease,background var(--motion-fast) ease}.chat-tool .action-icon{width:15px;height:15px;flex:none}.chat-tool:hover:not(:disabled){color:var(--text);background:var(--surface-2)}.chat-tool:focus-visible{outline:2px solid var(--accent);outline-offset:-2px;color:var(--text)}.chat-tool:disabled{cursor:default;opacity:.55}.chat-tool[aria-expanded=true]{color:var(--text);background:var(--surface-2)}.msg-search{display:flex;align-items:center;flex-wrap:wrap;gap:6px;max-width:100%;min-width:0}.msg-search-input{flex:1 1 180px;min-width:0;box-sizing:border-box;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;color:var(--text);font:inherit;font-size:13px;padding:6px 10px}.msg-search-input::placeholder{color:var(--text-dim)}.msg-search-input:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.msg-search-count{flex:0 0 auto;font-size:12.5px;color:var(--text-dim);white-space:nowrap}.msg-search-nav{flex:0 0 auto;background:var(--surface-2);border:1px solid var(--border);border-radius:8px;color:var(--text-dim);cursor:pointer;font:inherit;font-size:13px;padding:5px 9px}.msg-search-nav:hover:not(:disabled){border-color:var(--accent);color:var(--text)}.msg-search-nav:focus-visible{outline:2px solid var(--accent);outline-offset:2px;color:var(--text)}.msg-search-nav:disabled{cursor:default;opacity:.5}.msg.message-search-match{background:var(--accent-soft);border-radius:12px;padding:6px 8px;margin-left:-8px;margin-right:-8px}.msg.message-search-current{outline:2px solid var(--accent);outline-offset:2px}.conv-pin{flex:0 0 auto;border:none;background:none;cursor:pointer;color:var(--text-dim);font-size:13px;padding:8px 4px;min-width:24px;text-align:center;visibility:hidden;opacity:0;transition:opacity var(--motion-fast) var(--ease-standard)}.conv-item:hover .conv-pin,.conv-item:focus-within .conv-pin,.conv-item.active .conv-pin,.conv-item:hover .conv-rename,.conv-item:focus-within .conv-rename,.conv-item.active .conv-rename,.conv-item:hover .conv-delete,.conv-item:focus-within .conv-delete,.conv-item.active .conv-delete{visibility:visible;opacity:1}.conv-pin:hover:not(:disabled){color:var(--accent)}.conv-pin.pinned{color:var(--accent)}.conv-pin:focus-visible{visibility:visible;opacity:1;outline:2px solid var(--accent);outline-offset:-2px}.conv-pin:disabled{cursor:default;opacity:.6}.conv-rename{border:none;background:none;cursor:pointer;color:var(--text-dim);font-size:12px;padding:8px 6px;visibility:hidden;opacity:0;transition:opacity var(--motion-fast) var(--ease-standard)}.conv-rename:hover{color:var(--accent)}.conv-rename:focus-visible,.conv-delete:focus-visible{visibility:visible;opacity:1;outline:2px solid var(--accent);outline-offset:-2px}.conv-item-editing{display:flex;align-items:center;flex-wrap:wrap;gap:4px;padding:4px 6px;border-radius:10px;background:var(--surface-2)}.conv-rename-input{flex:1 1 auto;min-width:0;box-sizing:border-box;background:var(--bg);border:1px solid var(--accent);border-radius:8px;color:var(--text);font:inherit;font-size:13.5px;padding:6px 8px}.conv-rename-input:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.conv-rename-save,.conv-rename-cancel{flex:0 0 auto;border:none;background:none;cursor:pointer;font:inherit;font-size:13px;padding:6px 7px;border-radius:8px;color:var(--text-dim)}.conv-rename-save:hover:not(:disabled){color:var(--ok)}.conv-rename-cancel:hover:not(:disabled){color:var(--error-text)}.conv-rename-save:focus-visible,.conv-rename-cancel:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.conv-rename-save:disabled,.conv-rename-cancel:disabled{cursor:default;opacity:.6}.conv-rename-error{flex:1 0 100%;font-size:12px;color:var(--error-text);padding:2px 2px 0}.sidebar-backdrop,.burger{display:none}.btn.retry{margin-top:8px}.tg-block{padding:0 12px 10px}.tg-connect{width:100%;font-size:13px;padding:8px 10px}.tg-linked{font-size:12.5px;color:var(--text-dim);padding:6px 4px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:40;background:#00000073;display:grid;place-items:center;padding:16px}.modal{background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-lg);padding:20px;max-width:420px;width:100%;display:flex;flex-direction:column;gap:12px}.modal h3{margin:0}.modal-text{margin:0;color:var(--text-dim);font-size:14px}.tg-open{justify-content:center;text-align:center;font-size:15px;padding:11px}.link-code-row{display:flex;gap:8px;align-items:center}.link-code{flex:1;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:9px 12px;font-family:ui-monospace,Consolas,monospace;font-size:15px;letter-spacing:1px;text-align:center;-webkit-user-select:all;user-select:all}.modal-hint{margin:0;color:var(--text-dim);font-size:12.5px;line-height:1.5}.modal-close{align-self:flex-end}.oauth-button{display:grid;grid-template-columns:24px minmax(0,1fr) 24px;align-items:center;gap:8px;width:100%;height:46px;padding:0 12px;border-radius:12px;background:var(--surface-2);color:var(--text);border:1px solid var(--border);font:inherit;font-size:14.5px;font-weight:600;cursor:pointer;transition:border-color .15s,background .15s}.oauth-button__icon{display:grid;place-items:center;width:24px;height:24px}.oauth-button__spacer{width:24px;height:24px}.oauth-button__label{min-width:0;text-align:center;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.oauth-button:hover:not(:disabled){border-color:var(--accent);background:var(--surface)}.oauth-button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.oauth-button:disabled{opacity:.5;cursor:default}.oauth-button+.oauth-button{margin-top:-4px}.modal-divider{display:flex;align-items:center;gap:10px;color:var(--text-dim);font-size:12.5px}.modal-divider:before,.modal-divider:after{content:"";flex:1;height:1px;background:var(--border)}.modal-input{width:100%;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:11px 12px;font-size:15px;color:var(--text)}.modal-input:focus{outline:none;border-color:var(--accent)}.modal-input.code-input{font-family:ui-monospace,Consolas,monospace;font-size:20px;letter-spacing:6px;text-align:center}.success-text{color:var(--ok);font-weight:600}.waiting-row{display:flex;align-items:center;gap:8px;color:var(--text-dim);font-size:13px}.toasts{position:fixed;top:14px;right:14px;z-index:60;display:flex;flex-direction:column;gap:8px;max-width:min(360px,calc(100vw - 28px))}.toast{display:flex;align-items:flex-start;gap:10px;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow-lg);padding:10px 12px;font-size:13.5px;animation:toast-in var(--motion-normal) var(--ease-emphasized)}.toast.success{border-left:4px solid var(--ok)}.toast.error{border-left:4px solid var(--error-text)}.toast.info{border-left:4px solid var(--accent)}.toast-close{border:none;background:none;cursor:pointer;color:var(--text-dim);font-size:12px;padding:1px 3px;flex:none}@keyframes toast-in{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:none}}.topbar{flex:none;position:sticky;top:0;z-index:5;display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);min-height:var(--topbar-height);padding:var(--space-2) var(--space-4);background:var(--bg);border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:var(--space-2);min-width:0}.logo{color:var(--accent);font-size:20px}.brand h1{font-size:20px;margin:0;letter-spacing:.2px}.subtitle{color:var(--text-muted);font-size:12.5px;white-space:nowrap}.topbar-title{flex:1 1 auto;min-width:0;text-align:center;color:var(--text-dim);font-size:15.5px;font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.warn-chip{font-size:12px;background:var(--error-bg);color:var(--error-text);padding:4px 10px;border-radius:999px}.topbar-actions{display:flex;align-items:center;gap:var(--space-2);flex:none;min-width:0}.account-email{flex:1 1 auto;color:var(--text-muted);font-size:var(--font-meta);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.btn.account-btn{flex:none;padding:7px 12px;font-size:var(--font-secondary);border-radius:var(--radius-sm);white-space:nowrap}.chat{flex:1;padding:var(--space-5) max(var(--space-4),calc((100% - var(--chat-max-width)) / 2)) var(--space-3);display:flex;flex-direction:column;gap:var(--space-4);min-width:0;max-width:100%}.chat.empty{justify-content:center;justify-content:safe center}.hero{display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;padding:12px 8px 28px}.hero-icon{width:56px;height:56px;display:grid;place-items:center;font-size:26px;color:var(--accent);background:var(--accent-soft);border-radius:var(--radius-lg)}.hero-brand-mark{width:30px;height:30px}.hero h2{margin:var(--space-2) 0 0;font-size:30px;letter-spacing:-.3px}.hero-lead{margin:0;color:var(--text-dim);max-width:480px;font-size:16.5px}.hero-note{max-width:560px;margin-top:var(--space-4);text-align:left}.hero-note>summary{cursor:pointer;color:var(--text-muted);font-size:var(--font-secondary);list-style:none;padding:6px 8px;border-radius:var(--radius-sm);text-align:center}.hero-note>summary::-webkit-details-marker{display:none}.hero-note>summary:hover{color:var(--text-dim)}.hero-note>summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.hero-note[open]>summary{margin-bottom:var(--space-2)}.hero-sub{margin:0 0 var(--space-2);color:var(--text-muted);max-width:560px;font-size:var(--font-secondary);line-height:1.55}.beta-gate .hero-sub{color:var(--text-dim);font-size:15px;max-width:480px}.hero-grid{margin-top:18px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;width:100%;max-width:560px}.hero-card{display:flex;flex-direction:column;align-items:flex-start;gap:4px;padding:14px 16px;text-align:left;cursor:pointer;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);font:inherit;color:var(--text);transition:border-color var(--motion-fast) var(--ease-standard),transform var(--motion-fast) var(--ease-standard),box-shadow var(--motion-fast) var(--ease-standard)}.hero-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.hero-card:active:not(:disabled){transform:translateY(0) scale(.985);transition-duration:var(--motion-instant)}.hero-card-icon{font-size:22px}.hero-card-label{font-weight:600}.hero-card-hint{color:var(--text-dim);font-size:13px}.hero-card-secondary{margin-top:10px;width:100%;max-width:560px;flex-direction:row;align-items:center;gap:10px;padding:10px 14px;box-shadow:none}.hero-card-secondary .hero-card-icon{font-size:18px}.starter-cue{display:flex;align-items:center;gap:8px;padding:6px 10px;border-radius:10px;background:var(--accent-soft);color:var(--text);font-size:13px;line-height:1.35}.starter-cue-text{flex:1 1 auto;min-width:0}.starter-cue-close{flex:0 0 auto}.reg-cta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;align-self:stretch;padding:10px 14px;border-radius:14px;background:var(--surface);border:1px solid var(--border);font-size:13.5px}.reg-cta-text{flex:1 1 240px;min-width:0}.reg-cta-actions{display:flex;align-items:center;gap:6px;flex:0 0 auto}.auth-required{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;padding:10px 14px;border-radius:12px;background:var(--accent-soft);border:1px solid var(--border);font-size:13.5px;line-height:1.4}.auth-required-text{flex:1 1 240px;min-width:0}.auth-required-actions{display:flex;align-items:center;gap:6px;flex:0 0 auto}.msg{display:flex;flex-direction:column;gap:6px;max-width:86%;min-width:0}.msg.user{align-self:flex-end;align-items:flex-end}.msg.assistant{align-self:flex-start;align-items:flex-start}.bubble{padding:11px 15px;border-radius:var(--radius-lg);min-width:0;max-width:100%;font-size:var(--font-message);line-height:var(--line-message);overflow-wrap:anywhere;word-break:break-word;background:var(--surface);box-shadow:var(--shadow);border:1px solid var(--border)}.msg.user{max-width:min(100%,560px)}.msg.user .bubble{background:var(--user-bubble);color:var(--user-text);border:none;border-bottom-right-radius:var(--radius-sm);white-space:pre-wrap;box-shadow:none;padding:12px 16px;font-size:var(--font-message-user);line-height:1.55}.msg.assistant{max-width:100%}.msg.assistant .bubble{background:none;border:none;box-shadow:none;border-radius:var(--radius-lg);padding:2px 0}.md,.answer-body{min-width:0;max-width:100%}.md p,.md li,.md blockquote,.md .md-heading,.md code:not(pre code){overflow-wrap:anywhere;word-break:break-word;min-width:0}.md>:first-child{margin-top:0}.md>:last-child{margin-bottom:0}.md p{margin:.8em 0}.md ul,.md ol{margin:.8em 0;padding-left:1.35em;min-width:0}.md li{margin:.35em 0}.md code{background:var(--surface-2);border:1px solid var(--border);border-radius:6px;padding:.08em .36em;font-size:.92em;font-family:ui-monospace,Cascadia Code,Consolas,monospace}.md pre{background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:12px 14px;overflow-x:auto;margin:.6em 0;min-width:0;max-width:100%}.md pre code{background:none;border:none;padding:0;font-size:.9em}.md .md-heading{margin:.7em 0 .3em}.md .md-link{color:var(--accent);text-decoration:underline;text-underline-offset:2px;overflow-wrap:anywhere;word-break:break-word}.md .md-link:hover{text-decoration-thickness:2px}.md .md-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:3px}.md-table-wrap{overflow-x:auto;max-width:100%;min-width:0;margin:.6em 0;border:1px solid var(--border);border-radius:12px}.md-table{border-collapse:collapse;width:100%;font-size:.95em}.md-table th,.md-table td{padding:8px 12px;border-bottom:1px solid var(--border);border-right:1px solid var(--border);text-align:left;vertical-align:top;overflow-wrap:anywhere;min-width:72px}.md-table th:last-child,.md-table td:last-child{border-right:none}.md-table tbody tr:last-child td{border-bottom:none}.md-table thead th{background:var(--surface-2);font-weight:600}.md-table .md-td-left{text-align:left}.md-table .md-td-right{text-align:right}.md-table .md-td-center{text-align:center}.status-chip{display:inline-flex;align-items:center;gap:9px;padding:8px 14px;border-radius:999px;font-size:13.5px;background:var(--surface-2);border:1px solid var(--border);color:var(--text-dim)}.status-chip.processing{background:var(--accent-soft);border-color:transparent;color:var(--accent)}.spinner{width:13px;height:13px;border-radius:50%;border:2px solid currentColor;border-top-color:transparent;animation:spin .9s linear infinite;flex:none}.spinner.light{border-color:#fff;border-top-color:transparent}@keyframes spin{to{transform:rotate(360deg)}}.error-card{display:flex;gap:10px;align-items:flex-start;background:var(--error-bg);border-radius:14px;padding:12px 14px;max-width:100%}.error-icon{font-size:18px;line-height:1.3}.error-title{font-weight:600;color:var(--error-text)}.error-text{color:var(--error-text);font-size:14px;opacity:.92}.attached-thumb{max-width:160px;max-height:160px;border-radius:12px;border:1px solid var(--border)}.result-figure{margin:0;display:flex;flex-direction:column;gap:10px}.result-image{max-width:100%;border-radius:14px;border:1px solid var(--border);box-shadow:var(--shadow-lg)}.result-actions{display:flex;gap:8px;flex-wrap:wrap}.meta{display:flex;gap:6px;align-items:center;color:var(--text-dim);font-size:12.5px;padding-left:4px}.meta-done{color:var(--ok);font-weight:700}.tech summary{cursor:pointer}.tech div{font-size:12px;padding-top:2px}.owner-debug{font-size:12.5px;color:var(--text-dim);border:1px dashed var(--border);border-radius:10px;padding:6px 10px}.composer-wrap{position:sticky;bottom:0;background:var(--bg);padding:var(--space-2) max(var(--space-4),calc((100% - var(--composer-max-width)) / 2)) 14px;border-top:1px solid var(--border);display:flex;flex-direction:column;gap:var(--space-2)}.jump-latest{align-self:center;max-width:100%;box-sizing:border-box;background:var(--surface);color:var(--text);border:1px solid var(--border);border-radius:999px;padding:6px 14px;font:inherit;font-size:13px;cursor:pointer;box-shadow:var(--shadow);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.jump-latest:hover{border-color:var(--accent)}.jump-latest:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.composer-tools{display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0;max-width:100%}.scenarios{position:relative;flex:none;display:inline-flex}.scenarios-trigger{display:inline-flex;align-items:center;gap:6px;background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:999px;box-sizing:border-box;cursor:pointer;font:inherit;font-size:13px;min-height:32px;padding:6px 12px;white-space:nowrap}.scenarios-trigger:hover:not(:disabled){border-color:var(--accent)}.scenarios-trigger:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.scenarios-trigger:disabled{cursor:default;opacity:.6}.scenarios-trigger[aria-expanded=true]{border-color:var(--accent)}.scenarios-panel{position:absolute;bottom:calc(100% + 6px);left:0;z-index:40;transform-origin:bottom left;animation:menu-in-up var(--motion-fast) var(--ease-standard);display:flex;flex-direction:column;gap:2px;width:320px;max-width:calc(100vw - 32px);max-height:min(60vh,420px);overflow-y:auto;overscroll-behavior:contain;padding:6px;background:var(--surface);border:1px solid var(--border);border-radius:14px;box-shadow:var(--shadow)}.scenarios-panel-hint{margin:2px 8px 6px;color:var(--text-dim);font-size:12.5px;line-height:1.4;overflow-wrap:anywhere}.scenarios-item{display:flex;flex-direction:column;gap:2px;background:none;border:1px solid transparent;border-radius:10px;box-sizing:border-box;color:var(--text);cursor:pointer;font:inherit;min-height:44px;padding:8px 10px;text-align:left;min-width:0;width:100%}.scenarios-item:hover,.scenarios-item:focus-visible{border-color:var(--border);background:var(--surface-2)}.scenarios-item:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.scenarios-item-label{font-size:13.5px;overflow-wrap:anywhere}.scenarios-item-hint{color:var(--text-dim);font-size:12px;line-height:1.35;overflow-wrap:anywhere}.chip{background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:999px;padding:6px 12px;font-size:13px;cursor:pointer}.chip:hover{border-color:var(--accent)}.attach-card{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:8px 10px;box-shadow:var(--shadow)}.attach-card img{height:56px;width:56px;object-fit:cover;border-radius:10px;border:1px solid var(--border)}.attach-info{display:flex;flex-direction:column;flex:1;min-width:0}.attach-label{font-size:13.5px;font-weight:600}.attach-hint{font-size:12.5px;color:var(--text-dim)}.btn.icon.remove{font-size:14px;padding:8px 10px}.composer{display:flex;gap:8px;align-items:flex-end;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);padding:6px;min-width:0;transition:border-color var(--motion-fast) var(--ease-standard),box-shadow var(--motion-fast) var(--ease-standard)}.composer:focus-within{border-color:var(--accent);box-shadow:var(--shadow-md),0 0 0 3px color-mix(in srgb,var(--accent) 22%,transparent)}.composer.busy{opacity:.85}.composer textarea{flex:1;resize:none;min-height:46px;max-height:180px;overflow-y:hidden;padding:12px 6px;border-radius:var(--radius-lg);border:1px solid transparent;background:none;color:var(--text);font:inherit;outline:none}.composer textarea:focus{border-color:transparent;box-shadow:none}.composer textarea:disabled{opacity:.6}.composer .btn.icon{background:none;color:var(--text-dim)}.composer .btn.icon:hover:not(:disabled){background:var(--surface-2);color:var(--text)}.composer .btn.icon:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.btn{border:none;border-radius:var(--radius-md);cursor:pointer;font:inherit;background:var(--surface-2);color:var(--text);padding:10px 14px;transition:background var(--motion-fast) var(--ease-standard),border-color var(--motion-fast) var(--ease-standard),color var(--motion-fast) var(--ease-standard),transform var(--motion-instant) var(--ease-standard)}.btn:active:not(:disabled){transform:scale(.978)}.btn:disabled{opacity:.5;cursor:default;transform:none}.btn.send{background:var(--accent);color:var(--accent-text);font-weight:600;min-width:104px;height:46px;display:grid;place-items:center;border-radius:var(--radius-lg)}.btn.send:hover:not(:disabled){background:var(--accent-hover)}.btn.icon{font-size:17px;padding:10px 12px;height:46px}.btn.small{padding:7px 13px;font-size:13.5px;border-radius:var(--radius-sm);background:var(--accent);color:var(--accent-text);text-decoration:none;display:inline-flex;align-items:center;gap:6px}.btn.ghost{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}.btn.ghost:hover{border-color:var(--accent)}.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.estimate{color:var(--text-dim);font-size:12.5px;padding-left:4px}.composer-alert{background:var(--error-bg);color:var(--error-text);border-radius:12px;padding:8px 12px;font-size:13.5px}.char-counter{color:var(--text-dim);font-size:12px;padding-left:4px;align-self:flex-end}.char-counter.warn{color:var(--error-text);opacity:.75}.char-counter.over{color:var(--error-text);font-weight:600;opacity:1}.mobile-only,.send-icon{display:none}.send-icon .action-icon{width:20px;height:20px}.sidebar-links{flex-direction:column;gap:6px;padding:10px 14px 14px;border-top:1px solid var(--border)}.sidebar-links a{color:var(--text-dim);text-decoration:none;font-size:13px}.sidebar-links a:hover{color:var(--accent)}.link-manual summary{cursor:pointer;color:var(--text-dim);font-size:13px}.link-manual>*:not(summary){margin-top:10px}.attach-card.preparing{color:var(--text-dim)}.attach-card.preparing .spinner{width:18px;height:18px;margin:0 6px}.fb-paste-hint{margin-top:-4px}.fb-attach{align-self:flex-start;background:var(--surface-2);color:var(--text);border:1px solid var(--border)}@keyframes menu-in{0%{opacity:0;transform:translateY(-5px) scale(.98)}to{opacity:1;transform:none}}@keyframes menu-in-up{0%{opacity:0;transform:translateY(5px) scale(.98)}to{opacity:1;transform:none}}@keyframes backdrop-in{0%{opacity:0}to{opacity:1}}@keyframes msg-in{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}@keyframes stage-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}@keyframes composer-in{0%{opacity:.35}to{opacity:1}}.msg-enter{animation:msg-in var(--motion-fast) var(--ease-standard)}.hero>*{animation:stage-in var(--motion-normal) var(--ease-emphasized) both}.hero>*:nth-child(1){animation-delay:0ms}.hero>*:nth-child(2){animation-delay:50ms}.hero>*:nth-child(3){animation-delay:.1s}.hero>*:nth-child(n+4){animation-delay:.15s}.shell:not(.active-chat) .composer-wrap{animation:composer-in var(--motion-normal) var(--ease-standard) .15s both}.hero-icon{box-shadow:0 0 0 1px color-mix(in srgb,var(--accent) 12%,transparent),0 18px 44px -22px var(--accent)}.btn.send .action-icon{transition:transform var(--motion-fast) var(--ease-spring)}.btn.send:hover:not(:disabled) .action-icon{transform:translate(2px)}.btn.send:active:not(:disabled) .action-icon{transform:translate(0)}.attach-card,.starter-cue,.composer-alert,.auth-required,.reg-cta{animation:stage-in var(--motion-fast) var(--ease-standard)}.theme-control{position:relative;display:inline-flex;flex:none}.btn.icon.theme-trigger{display:inline-grid;place-items:center;background:none;color:var(--text-dim);height:38px;min-width:38px;padding:8px;border-radius:var(--radius-md)}.btn.icon.theme-trigger:hover:not(:disabled){background:var(--surface-2);color:var(--text)}.btn.icon.theme-trigger[aria-expanded=true]{background:var(--surface-2);color:var(--text)}.theme-trigger .action-icon{width:18px;height:18px}.theme-menu{position:absolute;z-index:45;top:calc(100% + 6px);right:0;display:flex;flex-direction:column;gap:2px;min-width:190px;max-width:calc(100vw - 32px);padding:6px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);transform-origin:top right;animation:menu-in var(--motion-fast) var(--ease-standard)}.theme-control-topbar .theme-menu{position:fixed;top:calc(var(--topbar-height) + 2px);right:var(--space-4);left:auto;bottom:auto}.theme-menu-item{display:flex;align-items:center;gap:var(--space-2);width:100%;box-sizing:border-box;min-height:38px;padding:7px 9px;background:none;border:none;border-radius:var(--radius-sm);color:var(--text);cursor:pointer;font:inherit;font-size:var(--font-ui);text-align:left;transition:background var(--motion-fast) var(--ease-standard)}.theme-menu-item:hover{background:var(--surface-2)}.theme-menu-item:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.theme-menu-item.selected{font-weight:600}.theme-menu-icon{width:16px;height:16px;flex:none;color:var(--text-dim)}.theme-menu-item.selected .theme-menu-icon{color:var(--accent)}.theme-menu-label{flex:1 1 auto;min-width:0}.theme-menu-check{width:15px;height:15px;flex:none;color:var(--accent)}.account-theme{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2);padding:2px 6px 4px;min-width:0}.account-theme-label{color:var(--text-dim);font-size:var(--font-secondary);min-width:0}.account-theme.mobile-only{display:none}.theme-switching body,.theme-switching .shell,.theme-switching .topbar,.theme-switching .sidebar,.theme-switching .composer,.theme-switching .composer-wrap,.theme-switching .chat,.theme-switching .bubble,.theme-switching .conv-item,.theme-switching .hero-card,.theme-switching .theme-menu{transition:background-color var(--motion-normal) var(--ease-standard),border-color var(--motion-normal) var(--ease-standard),color var(--motion-normal) var(--ease-standard)}@supports ((backdrop-filter: blur(12px)) or (-webkit-backdrop-filter: blur(12px))){.topbar,.composer-wrap{background:color-mix(in srgb,var(--bg) 78%,transparent);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}}@media(min-width:761px){.layout[data-sidebar=collapsed] .sidebar{width:var(--sidebar-rail-width)}.layout[data-sidebar=collapsed] .sidebar-rail{display:flex;flex:1;min-height:0;animation:rail-in var(--motion-fast) var(--ease-standard)}.layout[data-sidebar=collapsed] .sidebar-brand{justify-content:center;padding:14px 8px var(--space-2)}.layout[data-sidebar=collapsed] .brand-wordmark{display:none}.layout[data-sidebar=collapsed] .brand-button{padding:4px}.layout[data-sidebar=collapsed] #sidebar-collapse,.layout[data-sidebar=collapsed] .btn.sidebar-new-chat,.layout[data-sidebar=collapsed] .sidebar-head,.layout[data-sidebar=collapsed] .conv-search,.layout[data-sidebar=collapsed] .conv-search-status,.layout[data-sidebar=collapsed] .sidebar-empty,.layout[data-sidebar=collapsed] .conv-list,.layout[data-sidebar=collapsed] .sidebar-foot{display:none}}@media(max-width:760px){.burger{display:inline-block}.desktop-only,.btn.desktop-only{display:none}.mobile-only{display:block}.sidebar-links.mobile-only{display:flex}.jump-latest{min-height:44px;padding:10px 16px}.topbar{min-height:52px;padding:6px 8px;gap:6px;flex-wrap:nowrap}.brand{flex:1 1 auto;min-width:0;gap:4px}.brand h1{font-size:17px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.topbar-title{display:none}.brand-button.mobile-only{display:inline-flex;justify-content:center;margin:0 auto;min-width:44px;min-height:44px}.brand-button .brand-mark{width:24px;height:24px}.topbar-actions{flex:none;gap:4px}.btn.icon.topbar-new-chat{display:inline-grid;place-items:center}.warn-chip{display:none}.sidebar{position:fixed;top:0;left:0;bottom:0;z-index:20;transform:translate(-100%);transition:transform var(--motion-normal) var(--ease-emphasized);will-change:transform;box-shadow:var(--shadow-lg);width:min(88vw,340px);padding-top:8px;padding-bottom:env(safe-area-inset-bottom)}.sidebar.open{transform:translate(0)}.sidebar-brand{display:none}.btn.sidebar-new-chat{min-height:44px}.sidebar-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:15;background:#00000059;animation:backdrop-in var(--motion-normal) var(--ease-standard)}.account-theme.mobile-only{display:flex}.theme-menu{bottom:calc(100% + 6px);top:auto;transform-origin:bottom right;animation-name:menu-in-up}.btn.icon.theme-trigger{min-width:44px;min-height:44px}.theme-menu-item{min-height:44px}.chat-tools{padding:6px 10px 0}.chat-tool{min-height:44px;min-width:44px;justify-content:center;padding:8px}.chat-tool-label{display:none}.msg-search{flex-wrap:nowrap;max-width:100%}.msg-search-input{min-height:44px;font-size:16px}.msg-search-nav{min-height:44px;min-width:44px}.msg-search-count{font-size:var(--font-meta)}.conv-pin,.conv-delete,.conv-rename{display:none}.conv-rename-save,.conv-rename-cancel{min-height:44px;min-width:44px}.conv-rename-input{min-height:44px;font-size:16px}.conv-item{min-height:48px}.conv-title{min-height:48px;font-size:15px}.conv-more-trigger{min-height:44px;min-width:44px}.btn.account-btn{min-height:44px}.account-disclosure,.account-link-btn{min-height:44px;font-size:14px}.account-balance-value{font-size:14px}.sidebar-links a{min-height:44px;display:flex;align-items:center;font-size:14px}.conv-search-input{min-height:44px;font-size:16px}.conv-found{min-height:44px}.chat{padding:12px 10px 8px;gap:12px}.hero{padding:4px 2px 12px;gap:8px}.hero-icon{width:44px;height:44px;font-size:22px;border-radius:14px}.hero-brand-mark{width:24px;height:24px}.hero h2{font-size:24px;margin:2px 0 0}.hero-lead{font-size:15px}.hero-sub{font-size:13px}.hero-note>summary{min-height:44px;display:flex;align-items:center;justify-content:center;font-size:13px}.hero-grid{margin-top:10px;gap:8px;grid-template-columns:repeat(2,minmax(0,1fr))}.hero-card{padding:10px 12px;border-radius:14px}.hero-card-icon{font-size:18px}.hero-card-label{font-size:13.5px}.hero-card-hint{font-size:11.5px}.hero-card-secondary{margin-top:6px;padding:8px 12px}.starter-cue{font-size:12.5px;padding:6px 8px}.starter-cue-close{min-width:44px;min-height:44px}.reg-cta{padding:8px 10px;font-size:13px}.reg-cta .btn.small{min-height:44px}.reg-cta-close{min-width:44px;min-height:44px}.auth-required{padding:8px 10px;font-size:13px}.auth-required .btn.small{min-height:44px}.auth-required-close{min-width:44px;min-height:44px}.msg{max-width:96%}.msg.user{max-width:min(100%,88%)}.bubble{font-size:16.5px;line-height:1.6}.msg.user .bubble{font-size:16px}.result-actions .btn{flex:1 1 auto;justify-content:center}.attached-thumb{max-width:140px;max-height:140px}.composer-wrap{padding:6px 10px calc(8px + env(safe-area-inset-bottom));gap:6px}.composer{gap:4px;padding:4px;border-radius:var(--radius-lg)}.composer textarea{font-size:16px;min-height:44px;padding:10px 6px}.btn.icon{height:44px;min-width:44px;padding:10px}.btn.icon.remove{height:44px;min-width:44px}.btn.send{min-width:44px;width:44px;height:44px;padding:0;border-radius:var(--radius-md)}.send-label{display:none}.send-icon{display:inline-grid;place-items:center;font-size:18px}.attach-card{padding:6px 8px;gap:8px}.attach-card img{height:44px;width:44px}.modal-backdrop{padding:0;place-items:end stretch}.modal{width:100%;max-width:100%;border-radius:16px 16px 0 0;max-height:88dvh;overflow-y:auto;padding:16px 14px calc(16px + env(safe-area-inset-bottom))}.modal .btn,.modal .modal-input{min-height:44px}.modal-close{align-self:stretch}}@media(max-width:560px){.subtitle{display:none}.btn.account-btn{padding:8px 12px;font-size:13.5px}.hero h2{font-size:22px}.chip{flex:none;white-space:nowrap}}@media(max-width:350px){.hero-grid{grid-template-columns:1fr}.hero-card-hint{display:none}.brand h1{font-size:16px}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.invite-form{display:flex;flex-wrap:wrap;gap:8px;align-items:center;justify-content:center;margin-top:12px;max-width:420px}.invite-form .modal-input{flex:1 1 220px;min-width:180px}.beta-gate .modal-hint{width:100%;text-align:center;margin-top:6px}.beta-remaining{opacity:.75}.tier-select{display:flex;gap:8px;margin-bottom:8px;flex-wrap:wrap}.tier-card{flex:1 1 180px;display:flex;flex-direction:column;gap:2px;text-align:left;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);cursor:pointer;transition:border-color .15s,box-shadow .15s,background .15s}.tier-card:hover{border-color:var(--accent)}.tier-card.selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:0 0 0 2px color-mix(in srgb,var(--accent) 30%,transparent)}.tier-card:disabled{opacity:.6;cursor:default}.tier-name{font-weight:600}.tier-cost{color:var(--accent);font-size:13px;font-weight:600}.tier-desc{color:var(--text-dim);font-size:12px}.tier-edit-note{margin-bottom:8px;color:var(--text-dim);font-size:13px}.mode-banner{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:8px;padding:6px 10px;border:1px solid var(--accent);border-radius:10px;background:var(--accent-soft)}.mode-banner-text{font-size:13px;font-weight:600}.mode-cancel{flex:0 0 auto;white-space:nowrap}.attach-meta{display:block;font-size:12px;color:var(--text-dim)}.attach-warning{display:block;font-size:12px;color:var(--error-text)}.upload-notice-formats{display:block;font-size:12px;color:var(--text-dim);margin-top:2px}.message-action-area{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;margin-top:4px;max-width:100%;min-width:0;opacity:.62;transition:opacity .15s ease}.msg:hover .message-action-area,.message-action-area:focus-within{opacity:1}@media(hover:none){.message-action-area{opacity:1}}.message-toolbar{display:flex;flex-wrap:nowrap;align-items:center;gap:4px;max-width:100%;min-width:0}.message-toolbar__button,.message-toolbar__menu-item,.message-feedback__button{display:inline-flex;align-items:center;justify-content:center;gap:6px;background:none;border:1px solid transparent;border-radius:8px;box-sizing:border-box;color:var(--text-dim);cursor:pointer;font:inherit;font-size:12.5px;min-height:32px;padding:4px 8px;white-space:nowrap}.message-toolbar__button:hover:not(:disabled),.message-feedback__button:hover:not(:disabled),.message-toolbar__button:focus-visible,.message-feedback__button:focus-visible{border-color:var(--border);color:var(--text);background:var(--surface-2)}.message-toolbar__button:disabled,.message-toolbar__menu-item:disabled,.message-feedback__button:disabled{cursor:default;opacity:.6}.message-toolbar__menu-wrap .message-toolbar__button[aria-expanded=true]{border-color:var(--border);color:var(--text);background:var(--surface-2)}.action-icon{width:18px;height:18px;flex:none;display:block}.message-toolbar__label{white-space:nowrap}.message-toolbar__menu-wrap{position:relative;display:inline-flex}.message-toolbar__menu{position:absolute;top:calc(100% + 4px);right:0;z-index:30;transform-origin:top right;animation:menu-in var(--motion-fast) var(--ease-standard);display:flex;flex-direction:column;gap:2px;min-width:200px;max-width:calc(100vw - 32px);padding:4px;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:var(--shadow)}.message-toolbar__menu-wrap:only-child .message-toolbar__menu{left:0;right:auto}.message-toolbar__menu-item{justify-content:flex-start;width:100%;min-height:40px;text-align:left;white-space:normal}.message-toolbar__menu-item:hover:not(:disabled),.message-toolbar__menu-item:focus-visible{color:var(--text);background:var(--surface-2)}.message-feedback{display:flex;align-items:center;gap:4px;min-width:0}.message-feedback__label{color:var(--text-dim);font-size:12.5px;white-space:nowrap}.message-feedback__button{padding:4px 7px}.answer-collapse-action[aria-expanded=false]{color:var(--text);border-color:var(--border)}.answer-body.collapsed{overflow-wrap:anywhere}.answer-collapse-preview{margin:0;color:var(--text-dim);font-size:14.5px;line-height:1.5;overflow-wrap:anywhere;max-width:100%;white-space:normal}.followups{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px;max-width:100%}.followup{background:var(--surface-2);border:1px solid var(--border);border-radius:999px;color:var(--text-dim);cursor:pointer;font:inherit;font-size:12.5px;line-height:1.2;padding:5px 10px;transition:border-color .15s ease,color .15s ease}.followup:hover:not(:disabled){border-color:var(--accent);color:var(--text)}.followup:focus-visible{outline:2px solid var(--accent);outline-offset:2px;color:var(--text)}.followup:active:not(:disabled){transform:translateY(1px)}.followup:disabled{cursor:default;opacity:.6}.followup.selected{border-color:var(--accent);background:var(--accent-soft);box-shadow:inset 0 0 0 1px var(--accent);color:var(--text);font-weight:600}.followup.selected:hover:not(:disabled){color:var(--text)}.tokens-returned{margin-top:6px;font-size:12.5px;color:var(--ok)}.transient-hint{margin-top:4px;font-size:12px;color:var(--text-dim)}.code-block{position:relative}.code-block .code-copy{position:absolute;top:6px;right:6px;z-index:1;background:var(--surface);border:1px solid var(--border);border-radius:8px;color:var(--text-dim);cursor:pointer;font:inherit;font-size:12px;padding:2px 8px}.code-block .code-copy:hover,.code-block .code-copy:focus-visible{color:var(--text);border-color:var(--accent)}.clarifier{display:flex;flex-direction:column;gap:8px;margin-bottom:8px;padding:8px 12px;border:1px solid var(--border);border-radius:12px;background:var(--surface)}.clarifier-title{font-size:13px;font-weight:600}.clarifier-actions{display:flex;flex-wrap:wrap;gap:8px}.clarifier-chip[aria-pressed=true],.clarifier-chip.selected{border-color:var(--accent);background:var(--accent-soft);font-weight:600}.clarifier-hint{font-size:12px;color:var(--text-dim)}.text-mode{display:flex;align-items:center;flex-wrap:nowrap;gap:6px;min-width:0;max-width:100%}.text-mode-title{font-size:var(--font-meta);color:var(--text-muted);white-space:nowrap}.text-mode-group{display:inline-flex;align-items:center;gap:2px;padding:2px;background:var(--surface-2);border:1px solid var(--border);border-radius:999px;min-width:0}.text-mode-chip{background:none;border:none;border-radius:999px;color:var(--text-dim);cursor:pointer;font:inherit;font-size:var(--font-meta);line-height:1.2;padding:5px 11px;white-space:nowrap;transition:background var(--motion-fast) ease,color var(--motion-fast) ease}.text-mode-chip:hover:not(:disabled){color:var(--text)}.text-mode-chip:focus-visible{outline:2px solid var(--accent);outline-offset:1px;color:var(--text)}.text-mode-chip[aria-pressed=true],.text-mode-chip.selected{background:var(--surface);color:var(--text);font-weight:600;box-shadow:var(--shadow-sm)}.text-mode-chip:disabled{cursor:default;opacity:.6}.upload-notice{margin:0 0 8px;padding:8px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface-2);color:var(--text-dim);font-size:12.5px;line-height:1.45;display:flex;flex-wrap:wrap;align-items:center;gap:8px}.upload-notice-text{flex:1 1 220px;min-width:0}.upload-notice a{color:var(--accent)}.upload-notice-ok{flex:none}.site-footer{flex:none;border-top:1px solid var(--border);padding:10px 14px;background:var(--bg)}.site-footer-links{display:flex;flex-wrap:wrap;gap:6px 16px;justify-content:center}.site-footer-links a{color:var(--text-dim);text-decoration:none;font-size:12.5px}.site-footer-links a:hover{color:var(--accent)}.public-shell{max-width:820px;margin:0 auto;min-height:100dvh;display:flex;flex-direction:column;padding:0 16px}.public-header{display:flex;align-items:center;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--border)}.public-brand{display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:var(--text)}.public-brand-name{font-weight:700;font-size:18px}.public-main{flex:1;padding:8px 0 24px}.public-doc{line-height:1.6}.public-doc h1{font-size:26px;margin:16px 0 8px}.public-doc h2{font-size:18px;margin:22px 0 6px}.public-doc p{margin:10px 0}.public-doc ul{margin:10px 0;padding-left:22px}.public-doc li{margin:4px 0}.public-doc a{color:var(--accent)}.public-note{color:var(--text-dim);font-size:13.5px}.requisites{margin:12px 0;border:1px solid var(--border);border-radius:10px;overflow:hidden}.req-row{display:flex;gap:12px;padding:9px 12px;border-bottom:1px solid var(--border)}.req-row:last-child{border-bottom:none}.req-label{flex:0 0 150px;color:var(--text-dim);font-size:13.5px}.req-value{flex:1;min-width:0}.pricing-table{margin:14px 0;border:1px solid var(--border);border-radius:10px;overflow:hidden}.pricing-row{display:flex;align-items:center;gap:12px;padding:12px 14px;border-bottom:1px solid var(--border)}.pricing-row:last-child{border-bottom:none}.pricing-op{flex:1;min-width:0;display:flex;flex-direction:column;gap:2px}.pricing-name{font-weight:600}.pricing-desc{color:var(--text-dim);font-size:12.5px}.pricing-cost{flex:none;text-align:right;display:flex;flex-direction:column;gap:1px}.pricing-tokens{font-weight:700;color:var(--accent)}.pricing-rub{color:var(--text-dim);font-size:12.5px}.pricing-unavailable{color:var(--text-dim);font-size:13px}@media(max-width:560px){.req-label{flex-basis:110px}.public-doc h1{font-size:22px}}@media(max-width:760px){.tier-select{flex-wrap:nowrap;gap:6px;margin-bottom:6px}.tier-card{flex:1 1 0;min-width:0;padding:8px 10px}.tier-desc{display:none}.mode-banner{padding:5px 8px;margin-bottom:6px}.mode-banner-text{font-size:12px}.clarifier{padding:6px 10px;margin-bottom:6px}.clarifier-actions{overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px}.clarifier-chip{flex:none;white-space:nowrap}.text-mode{flex-wrap:nowrap;max-width:100%;justify-content:flex-end}.text-mode-title{display:none}.text-mode-group{flex-wrap:nowrap}.text-mode-chip{min-height:44px;padding:7px 10px}.message-action-area{opacity:1;flex-direction:column;align-items:flex-start;gap:4px}.message-toolbar{flex-wrap:nowrap;max-width:100%;gap:2px}.message-toolbar__label{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.message-toolbar__button,.message-feedback__button{flex:none;min-width:44px;min-height:44px;padding:8px}.message-toolbar__menu-item{min-height:44px;padding:8px 10px}.message-toolbar__menu{min-width:180px;max-width:calc(100vw - 24px)}.scenarios-trigger{min-height:44px;padding:8px 12px}.scenarios-panel{width:calc(100vw - 24px);max-width:calc(100vw - 24px);left:0;max-height:min(58vh,380px)}.followups{flex-wrap:wrap;max-width:100%}.followup{min-height:36px;padding:7px 12px}.upload-notice{font-size:12px;padding:8px 10px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:1ms!important;animation-delay:0ms!important;animation-iteration-count:1!important;transition-duration:1ms!important;scroll-behavior:auto!important}.sidebar{transition:none!important}.hero>*,.msg-enter,.toast,.theme-menu,.conv-more-menu,.message-toolbar__menu,.scenarios-panel,.sidebar-backdrop,.attach-card,.starter-cue,.composer-alert,.auth-required,.reg-cta,.shell:not(.active-chat) .composer-wrap{animation:none!important}.btn:active:not(:disabled),.hero-card:hover,.hero-card:active:not(:disabled),.btn.send:hover:not(:disabled) .action-icon,.followup:active:not(:disabled){transform:none!important}}