*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}:root{--bg-base: #f3f1ee;--bg-soft: #ece9e4;--surface: #fffdf8;--surface-2: #f8f5ef;--text-main: #2f2a25;--text-soft: #5f574f;--accent: #9f2337;--accent-strong: #861d2e;--line: #ddd6cc;--shadow-soft: 0 12px 30px rgba(88, 67, 53, .12);--shadow-focus: 0 0 0 3px rgba(159, 35, 55, .25);--radius-shell: 20px;--radius-mid: 14px;--radius-tight: 10px;--header-h: 64px;--z-header: 30;--z-overlay: 40;--z-modal: 50}html{scroll-behavior:smooth}body{font-family:Outfit,Noto Sans SC,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:radial-gradient(circle at 92% 10%,rgba(159,35,55,.12),transparent 40%),radial-gradient(circle at 18% 90%,rgba(145,123,101,.18),transparent 34%),var(--bg-base);color:var(--text-main);height:100dvh;overflow:hidden;font-variant-numeric:tabular-nums}body:before{content:"";position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;background-image:radial-gradient(rgba(64,51,40,.035) .8px,transparent .8px);background-size:3px 3px;opacity:.45;z-index:0}.skip-link{position:absolute;left:12px;top:-42px;padding:.55rem .85rem;border-radius:var(--radius-tight);background:var(--accent);color:#fff;text-decoration:none;z-index:var(--z-modal);transition:top .2s ease}.skip-link:focus{top:10px}:focus-visible{outline:none;box-shadow:var(--shadow-focus)}.icon-button,.toolbox-button,.btn,.feedback-btn,.upload-button,.question-bubble,.copy-button,.satisfied-button,.unsatisfied-button,.lang-switch a{transition:transform .2s ease,filter .2s ease,background-color .22s ease,color .22s ease,box-shadow .22s ease}.icon-button:hover,.toolbox-button:hover,.btn:hover,.feedback-btn:hover{transform:translateY(-1px)}.icon-button:active,.toolbox-button:active,.btn:active,.feedback-btn:active{transform:translateY(1px) scale(.98)}.btn{padding:8px 14px;border-radius:var(--radius-tight);border:1px solid var(--line);background:#fff;cursor:pointer;font-size:.95rem;font-family:inherit}.btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;display:none;align-items:center;justify-content:center;z-index:var(--z-modal)}.modal-backdrop.open{display:flex}.modal{background:var(--surface);border-radius:12px;box-shadow:0 10px 30px #0003;width:92%;max-width:360px;padding:18px 16px 14px}.modal-title{font-size:1.05rem;font-weight:600;margin-bottom:8px;color:var(--text-main)}.modal-content{color:var(--text-soft);line-height:1.5}.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%);background:#000000d9;color:#fff;padding:10px 14px;border-radius:var(--radius-tight);font-size:.92rem;opacity:0;pointer-events:none;transition:opacity .25s ease;z-index:2100}.toast.show{opacity:1}.toast.success{background:#1a6b37eb}.toast.error{background:#9f2337eb}.switch{position:relative;display:inline-block;width:50px;height:24px}.switch input{opacity:0;width:0;height:0}.slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#ccc;transition:.4s;border-radius:24px}.slider:before{position:absolute;content:"";height:18px;width:18px;left:3px;bottom:3px;background-color:#fff;transition:.4s;border-radius:50%}input:checked+.slider{background-color:var(--accent)}input:checked+.slider:before{transform:translate(26px)}.loading-admin{min-height:100dvh;background:var(--bg-base)}.header{position:fixed;top:0;left:0;right:0;background:#fffcf6e0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:var(--shadow-soft);padding:14px 1rem;z-index:var(--z-header);overflow:visible}.header-inner{margin:0;display:flex;align-items:center;justify-content:flex-start;gap:1rem}.header-left{display:flex;align-items:center;gap:12px}.header-left img,.header-right img{display:block;height:36px;width:auto}.header-right{margin-left:auto;display:flex;align-items:center;gap:16px}.header-nav{display:flex;align-items:center;gap:6px}.nav-btn{font-size:.84rem;font-weight:500;color:var(--text-soft);text-decoration:none;padding:.3rem .7rem;border-radius:6px;border:1px solid var(--line);background:transparent;white-space:nowrap;transition:color .22s ease,border-color .22s ease,background .22s ease}.nav-btn:hover{color:var(--accent);border-color:var(--accent);background:#9f23370a}.auth-actions{display:flex;align-items:center;gap:8px}.auth-btn{border:1px solid var(--line);background:#fff;color:var(--text-main);border-radius:999px;padding:.35rem .8rem;cursor:pointer;font-size:.84rem;font-family:inherit}.auth-btn.primary{background:var(--accent);color:#fff;border-color:var(--accent)}.auth-user{font-size:.82rem;color:var(--text-soft);white-space:nowrap}.lang-switch{display:flex;align-items:center;gap:10px}.lang-switch a{color:var(--accent);text-decoration:none;font-weight:600;letter-spacing:.01em}.lang-switch a:hover{text-decoration:underline}.lang-switch a[aria-current=page]{text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px;font-weight:700}.header-badge{font-size:.78rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);background:#9f233714;border:1px solid rgba(159,35,55,.2);border-radius:6px;padding:3px 8px}.upload-button{height:36px;padding:0 20px;border:none;background:var(--accent);color:#fff;border-radius:999px;font-size:.92rem;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;white-space:nowrap;font-family:inherit}.upload-button:hover{background:var(--accent-strong);transform:translateY(-1px)}.upload-button:active{transform:translateY(1px) scale(.98)}.back-link{font-size:.86rem;color:var(--text-soft);text-decoration:none;padding:.3rem .65rem;border-radius:6px;border:1px solid var(--line);transition:color .22s ease,border-color .22s ease,background .22s ease}.back-link:hover{color:var(--accent);border-color:var(--accent);background:#9f23370a}.page{position:relative;z-index:1;display:flex;height:calc(100dvh - var(--header-h));margin-top:var(--header-h);width:100%;gap:0}.left-panel,.chat-container{background:linear-gradient(160deg,#ffffffeb,#f8f5eff2);box-shadow:var(--shadow-soft)}.left-panel{width:260px;flex-shrink:0;overflow-y:auto;padding:1rem;border-right:1px solid var(--line)}.right-content{flex:3;display:flex;flex-direction:column;min-width:0;height:100%}.sidebar-title{font-size:.9rem;color:var(--text-soft);letter-spacing:.06em;text-transform:lowercase;margin-bottom:.75rem}.sidebar-title strong{display:block;font-size:1.15rem;font-weight:600;letter-spacing:-.015em;color:var(--text-main);text-wrap:balance;text-transform:none}.questions{display:flex;flex-direction:column;gap:.5rem}.questions-loading,.questions-empty{color:var(--text-soft);font-size:.94rem;line-height:1.55;padding:.7rem;border-radius:var(--radius-mid);background:#ffffffa6}.questions-loading{background:linear-gradient(90deg,#f8f5efcc,#fffdf8f2,#f8f5efcc);background-size:200% 100%;animation:questionsShimmer 1.25s linear infinite}@keyframes questionsShimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.question-bubble{display:inline-block;background:#ffffffeb;color:#333;border-radius:16px;padding:8px 12px;border:none;border-left:3px solid transparent;box-shadow:0 6px 16px #7865541a;cursor:pointer;max-width:95%;text-align:left;font-size:inherit;font-family:inherit}.question-bubble:hover{transform:translate(4px);box-shadow:0 10px 24px #725a4929;border-left-color:var(--accent)}.question-bubble:active{transform:translate(2px) scale(.99)}.chat-container{flex:1;display:flex;flex-direction:column;background:var(--surface);width:100%;min-height:0}.messages{flex:1;overflow-y:auto;padding:1.2rem 1.2rem 1.5rem;display:flex;flex-direction:column;gap:1rem;min-height:0;-webkit-overflow-scrolling:touch}.message{max-width:80%;padding:.75rem 1rem;border-radius:18px;word-wrap:break-word;line-height:1.58;font-weight:500;text-wrap:pretty}.user-message{align-self:flex-end;background:var(--surface-2);color:var(--text-main);border-radius:16px;margin-right:6%}.assistant-message{align-self:auto;background:transparent;color:var(--text-main);border-radius:0;margin-left:10%;margin-right:15%;max-width:none;width:auto;padding:0}.assistant-message a,.user-message a{color:#555;text-decoration:none}.assistant-message a:visited,.user-message a:visited{color:#555}.assistant-message a:hover,.user-message a:hover{color:#333}.status-message{align-self:center;background:#f9a0a0;color:#6c0c0c;font-style:italic;font-size:.9rem}@keyframes statusGlow{0%{box-shadow:0 0 #b01212b3}50%{box-shadow:0 0 0 6px #1976d200}to{box-shadow:0 0 #1976d200}}.status-message.glowing{animation:statusGlow 1.5s infinite}.error-message{align-self:stretch;background:#fff3f3;border:1px solid #f5c2c2;border-left:4px solid #c0392b;border-radius:8px;color:#7b2020;font-size:.92rem;padding:10px 14px;margin-left:10%;margin-right:15%;max-width:none;display:flex;align-items:flex-start;gap:10px;line-height:1.45}.error-message .error-icon{font-size:1.1rem;flex-shrink:0;margin-top:1px}.error-message .error-body{flex:1;min-width:0}.error-message .error-title{font-weight:600;margin-bottom:2px}.error-message 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7px}.lock-title{font-size:1.35rem;font-weight:700;margin-bottom:.4rem;color:var(--text-main)}.lock-sub{font-size:.9rem;color:var(--text-soft);margin-bottom:1.75rem}.lock-field{display:flex;flex-direction:column;gap:.4rem;margin-bottom:1.2rem}.lock-field label{font-size:.88rem;font-weight:500;color:var(--text-soft)}.lock-field input{padding:.65rem .85rem;border:1.5px solid var(--line);border-radius:var(--radius-tight);font-size:.97rem;font-family:inherit;background:#fff;transition:border-color .2s,box-shadow .2s}.lock-field input:focus{outline:none;border-color:var(--accent);box-shadow:var(--shadow-focus)}.lock-error{font-size:.86rem;color:var(--accent);margin-top:-.6rem;margin-bottom:.8rem;min-height:1.2em}.btn-primary{width:100%;padding:.72rem 1.5rem;background:var(--accent);color:#fff;border:none;border-radius:var(--radius-tight);font-size:.97rem;font-weight:600;font-family:inherit;cursor:pointer;transition:background .2s,transform .18s}.btn-primary:hover{background:var(--accent-strong);transform:translateY(-1px)}.btn-primary:active{transform:translateY(1px) scale(.99)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;transform:none}#adminShell{position:fixed;top:0;right:0;bottom:0;left:0;overflow-y:auto;background:radial-gradient(circle at 92% 10%,rgba(159,35,55,.12),transparent 40%),radial-gradient(circle at 18% 90%,rgba(145,123,101,.18),transparent 34%),var(--bg-base)}.admin-main{position:relative;z-index:1;margin-top:var(--header-h);padding:2rem 2rem 4rem;max-width:1100px;margin-left:auto;margin-right:auto}.page-heading{font-size:1.5rem;font-weight:700;color:var(--text-main);margin-bottom:.35rem}.page-sub{font-size:.93rem;color:var(--text-soft);margin-bottom:2rem}.card{background:var(--surface);border-radius:var(--radius-mid);box-shadow:var(--shadow-soft);padding:1.75rem;margin-bottom:1.5rem}.card-header{display:flex;align-items:center;gap:.75rem;margin-bottom:1.4rem}.card-icon{width:36px;height:36px;border-radius:9px;background:#9f233717;display:flex;align-items:center;justify-content:center;flex-shrink:0}.card-icon svg{width:18px;height:18px;stroke:var(--accent);fill:none;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.card-title{font-size:1.1rem;font-weight:600;color:var(--text-main)}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}.form-group{display:flex;flex-direction:column;gap:.4rem}.form-group.full{grid-column:1 / -1}.form-group label{font-size:.87rem;font-weight:500;color:var(--text-soft)}.form-group select,.form-group input[type=text],.form-group input[type=file],.form-group textarea{padding:.6rem .8rem;border:1.5px solid var(--line);border-radius:var(--radius-tight);font-size:.95rem;font-family:inherit;background:#fff;color:var(--text-main);transition:border-color .2s,box-shadow .2s}.form-group textarea{resize:vertical;min-height:90px}.form-group select:focus,.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent);box-shadow:var(--shadow-focus)}.form-group input[type=file]{padding:.4rem .6rem}.tabs{display:flex;gap:0;border-bottom:1.5px solid var(--line);margin-bottom:1.25rem}.tab-btn{padding:.55rem 1.1rem;background:none;border:none;font-size:.93rem;font-weight:500;font-family:inherit;color:var(--text-soft);cursor:pointer;border-bottom:2.5px solid transparent;margin-bottom:-1.5px;transition:color .2s,border-color 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