*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bg:#fafaf8;--surf:#fff;--surf-low:#f4f4f2;--surf-mid:#eeeeec;--surf-high:#e8e8e6;--orange:#f97316;--orange-hover:#ea6c0d;--orange-soft:#fed7aa;--orange-dim:#7c2d12;--orange-pale:#fff7ed;--brand:var(--orange);--txt:#1a1c1b;--txt2:#584237;--txt3:#8c7164;--txt4:#b0a098;--bdr:#1a1a1812;--bdr2:#1a1a181c;--bdr3:#1a1a1829;--error:#ba1a1a;--error-bg:#ffdad6;--success:#10b981;--success-bg:#d1fae5;--ok-bg:var(--success-bg);--ok-border:color-mix(in srgb, var(--success) 40%, transparent);--warn-bg:var(--orange-pale);--warn-border:color-mix(in srgb, var(--orange) 35%, transparent);--danger-bg:var(--error-bg);--danger-border:color-mix(in srgb, var(--error) 40%, transparent);--physics:#6366f1;--chemistry:#f59e0b;--biology:#10b981;--math:#0ea5e9;--ict:#8b5cf6;--bangla:#ec4899;--english:#14b8a6;--history:#ef4444;--font-display:"Fraunces", "Hind Siliguri", "Noto Sans Bengali", serif;--font-ui:"DM Sans", "Hind Siliguri", "Noto Sans Bengali", system-ui, sans-serif;--font-body:"Hind Siliguri", "Noto Sans Bengali", "DM Sans", system-ui, sans-serif;--font-mono:"DM Mono", "JetBrains Mono", monospace;--font-reader:"Lora", "Noto Sans Bengali", Georgia, serif;--sidebar-w:256px;--hdr-h:56px;--r:12px;--r-sm:8px;--r-xs:6px;--r-full:9999px;--bg-orb-1:#6366f112;--bg-orb-2:#0ea5e90f;--bg-orb-3:#f9731614;--bg-orb-4:#10b9810d;--hero-surface:linear-gradient(128deg, #fff7ed 0%, #fff 42%, color-mix(in srgb, var(--math) 7%, #fff) 100%);--hero-scrim-solid:#fffaf5;--hero-scrim-mid:#fffaf5b8;--insight-surface:linear-gradient(135deg, #fff7ed 0%, #ffedd5 100%);--bubble-user-surface:linear-gradient(135deg, #fff7ed 0%, var(--surf-low) 100%);--shadow-hdr:0 1px 0 #1a1a180a;--shadow-card:0 8px 22px #1a1c1b0a;--shadow-card-hover:0 12px 28px #1a1c1b12;--shadow-stat-hover:0 10px 24px #1a1c1b0f;--btn-secondary-bg:var(--surf);--btn-secondary-hover:var(--surf-low);--pill-streak-fg:#047857;--focus-ring:#f973161f}:root[data-theme=dark]{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;--bg:#252c34;--surf:#2e3842;--surf-low:#283138;--surf-mid:#384654;--surf-high:#455363;--orange:#f97316;--orange-hover:#fb923c;--orange-soft:#3d2818;--orange-dim:#ffedd5;--orange-pale:#332418;--brand:var(--orange);--txt:#f1f5f9;--txt2:#cbd5e1;--txt3:#94a3b8;--txt4:#64748b;--bdr:#f1f5f914;--bdr2:#f1f5f924;--bdr3:#f1f5f938;--error:#fca5a5;--error-bg:#ef44442e;--success:#34d399;--success-bg:#10b9812e;--ok-bg:#10b9812e;--ok-border:#34d39973;--warn-bg:#f9731629;--warn-border:#f973166b;--danger-bg:#ef44442e;--danger-border:#f8717173;--physics:#818cf8;--chemistry:#fbbf24;--biology:#34d399;--math:#38bdf8;--ict:#a78bfa;--bangla:#f472b6;--english:#2dd4bf;--history:#f87171;--bg-orb-1:#6366f124;--bg-orb-2:#0ea5e91f;--bg-orb-3:#f9731629;--bg-orb-4:#10b9811a;--hero-scrim-solid:#2a333c;--hero-scrim-mid:#2a333cc7;--hero-surface:linear-gradient(128deg, color-mix(in srgb, var(--orange) 30%, var(--surf)) 0%, var(--surf) 42%, color-mix(in srgb, var(--math) 22%, var(--surf-mid)) 100%);--insight-surface:linear-gradient(135deg, color-mix(in srgb, var(--orange) 26%, var(--surf-mid)) 0%, color-mix(in srgb, var(--orange) 14%, var(--surf)) 100%);--bubble-user-surface:linear-gradient(135deg, color-mix(in srgb, var(--orange) 28%, var(--surf-mid)) 0%, var(--surf) 100%);--shadow-hdr:0 1px 0 #ffffff12;--shadow-card:0 12px 34px #00000038;--shadow-card-hover:0 16px 40px #00000047;--shadow-stat-hover:0 14px 34px #00000042;--btn-secondary-bg:var(--surf-mid);--btn-secondary-hover:var(--surf-high);--pill-streak-fg:#6ee7b7;--focus-ring:#f9731647}:root[data-theme=dark] .sb-nav-link.active,:root[data-theme=dark] .hist-item.active{box-shadow:inset 3px 0 0 var(--orange),0 0 0 1px color-mix(in srgb,var(--orange) 32%,transparent)}:root[data-theme=dark] .grade-pill.selected{border-color:var(--orange);background:var(--orange-soft);color:var(--orange-dim)}body{font-family:var(--font-ui);color:var(--txt);-webkit-font-smoothing:antialiased;background:radial-gradient(ellipse 70% 50% at 92% 8%, var(--bg-orb-1), transparent 55%), radial-gradient(ellipse 60% 45% at 8% 92%, var(--bg-orb-2), transparent 50%), radial-gradient(ellipse 120% 80% at 100% -20%, var(--bg-orb-3), transparent 55%), radial-gradient(ellipse 90% 60% at -10% 100%, var(--bg-orb-4), transparent 50%), var(--bg);font-size:14px;line-height:1.65}:focus-visible{outline:2px solid var(--orange);outline-offset:2px}.material-symbols-outlined{font-variation-settings:"FILL" 0,"wght" 400,"GRAD" 0,"opsz" 24;-webkit-user-select:none;user-select:none;font-size:20px;line-height:1}.msf{font-variation-settings:"FILL" 1,"wght" 400,"GRAD" 0,"opsz" 24}.auth-page{background:var(--bg);align-items:stretch;min-height:100vh;display:flex}.auth-panel-left{background:linear-gradient(150deg,var(--orange-soft) 0%,var(--bg) 60%);border-right:1px solid var(--bdr2);flex-direction:column;flex:1;justify-content:space-between;padding:56px 48px;display:none}@media (width>=900px){.auth-panel-left{display:flex}}.auth-brand{align-items:center;gap:12px;display:flex}.auth-brand img{width:auto;height:44px}.auth-hero{margin-top:auto;margin-bottom:auto}.auth-hero h1{font-family:var(--font-display);color:var(--txt);margin-bottom:16px;font-size:clamp(36px,4vw,54px);font-weight:700;line-height:1.2}.auth-hero h1 em{color:var(--orange);font-style:normal}.auth-hero p{color:var(--txt2);font-size:16px;line-height:1.8;font-family:var(--font-body);max-width:380px}.auth-footnote{color:var(--txt4);font-size:12px}.auth-panel-right{flex-direction:column;justify-content:center;align-items:center;width:100%;max-width:480px;margin:0 auto;padding:40px 28px;display:flex}@media (width>=900px){.auth-panel-right{flex-shrink:0;width:460px;margin:0;padding:56px 48px}}.auth-card{width:100%;max-width:400px}.auth-logo-wrap{justify-content:center;margin-bottom:24px;display:flex}.auth-logo-wrap img{width:auto;height:48px}.auth-title{font-family:var(--font-display);color:var(--txt);text-align:center;margin-bottom:4px;font-size:22px;font-weight:700}.auth-subtitle{color:var(--txt3);text-align:center;font-size:13.5px;font-family:var(--font-body);margin-bottom:28px}.btn-google{border:1.5px solid var(--bdr2);border-radius:var(--r-sm);width:100%;height:48px;color:var(--txt2);cursor:pointer;font-size:14px;font-weight:500;font-family:var(--font-ui);background:#fff;justify-content:center;align-items:center;gap:12px;text-decoration:none;transition:border-color .15s,background .15s;display:flex}.btn-google:hover{border-color:var(--bdr3);background:var(--surf-low)}.auth-divider{color:var(--txt4);align-items:center;gap:12px;margin:20px 0;font-size:12px;font-weight:500;display:flex}.auth-divider:before,.auth-divider:after{content:"";background:var(--bdr2);flex:1;height:1px}.form-group{margin-bottom:16px}.form-label{color:var(--txt2);letter-spacing:.03em;margin-bottom:6px;font-size:12px;font-weight:600;display:block}.input-wrap{background:var(--surf-low);border:1.5px solid var(--bdr2);border-radius:var(--r-sm);align-items:center;padding:0 14px;transition:border-color .15s,background .15s;display:flex}.input-wrap:focus-within{border-color:var(--orange);background:var(--surf);box-shadow:0 0 0 3px #f973161a}.input-wrap .material-symbols-outlined{color:var(--txt4);flex-shrink:0;margin-right:10px;font-size:18px;transition:color .15s}.input-wrap:focus-within .material-symbols-outlined{color:var(--orange)}.input-wrap input,.input-wrap select{width:100%;height:44px;color:var(--txt);font-size:14px;font-family:var(--font-ui);background:0 0;border:none;outline:none}.input-wrap input::placeholder{color:var(--txt4)}.input-wrap select{cursor:pointer;appearance:none}.auth-msg{border-radius:var(--r-sm);font-size:13px;font-weight:500;font-family:var(--font-body);align-items:center;gap:8px;margin-bottom:16px;padding:10px 14px;display:none}.auth-msg.error{background:var(--error-bg);color:var(--error);border:1px solid #ffcdd2}.auth-msg.success{background:var(--success-bg);color:#065f46;border:1px solid #a7f3d0}.auth-msg .material-symbols-outlined{flex-shrink:0;font-size:16px}.btn-primary{background:var(--orange);color:#fff;border-radius:var(--r-sm);cursor:pointer;width:100%;height:48px;font-size:15px;font-weight:600;font-family:var(--font-ui);border:none;justify-content:center;align-items:center;gap:8px;margin-top:20px;transition:background .15s,transform .1s;display:flex}.btn-primary:hover{background:var(--orange-hover)}.btn-primary:active{transform:scale(.98)}.auth-footer{color:var(--txt3);text-align:center;margin-top:20px;font-size:13px}.auth-footer a{color:var(--orange);font-weight:600;text-decoration:none}.auth-footer a:hover{text-decoration:underline}.grade-grid{grid-template-columns:1fr 1fr;gap:8px;margin-top:6px;display:grid}.grade-pill{border-radius:var(--r-sm);border:1.5px solid var(--bdr2);background:var(--surf);color:var(--txt2);cursor:pointer;text-align:center;font-size:13.5px;font-weight:500;font-family:var(--font-ui);padding:10px 14px;transition:all .15s}.grade-pill:hover{border-color:var(--orange-soft);background:var(--orange-soft);color:var(--orange-dim)}.grade-pill.selected{border-color:var(--orange);background:var(--orange-soft);color:var(--orange-dim);font-weight:600}.onboard-progress{background:var(--bdr2);border-radius:99px;height:4px;margin-bottom:12px;overflow:hidden}.onboard-progress__bar{background:var(--orange);border-radius:99px;height:100%;transition:width .25s}.onboard-steps{justify-content:center;gap:8px;margin-bottom:24px;display:flex}.onboard-steps__dot{background:var(--bdr2);border-radius:50%;width:8px;height:8px;transition:background .2s,transform .2s}.onboard-steps__dot.active{background:var(--orange);transform:scale(1.1)}.form-label-hint{color:var(--txt4);font-weight:500}.subject-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.subject-pill{border-radius:var(--r-sm);border:1.5px solid var(--bdr2);background:var(--surf);color:var(--txt2);cursor:pointer;text-align:center;font-size:13px;font-weight:500;font-family:var(--font-ui);padding:10px 12px;line-height:1.35;transition:all .15s}.subject-pill:hover{border-color:var(--orange-soft);background:var(--orange-soft);color:var(--orange-dim)}.subject-pill.selected{border-color:var(--orange);background:var(--orange-soft);color:var(--orange-dim);font-weight:600}.goal-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:16px;display:grid}.goal-card{border-radius:var(--r-sm);border:1.5px solid var(--bdr2);background:var(--surf);cursor:pointer;min-height:88px;font-family:var(--font-ui);flex-direction:column;justify-content:center;align-items:center;gap:4px;padding:14px 10px;transition:all .15s;display:flex}.goal-card:hover{border-color:var(--orange-soft);background:var(--orange-soft)}.goal-card.selected{border-color:var(--orange);background:var(--orange-soft)}.goal-card__value{color:var(--txt);font-size:18px;font-weight:700;line-height:1.2}.goal-card__label{color:var(--txt3);font-size:12px}.goal-card.selected .goal-card__value{color:var(--orange-dim)}.onboard-summary{border-radius:var(--r-sm);background:var(--surf-low);border:1.5px solid var(--bdr2);flex-direction:column;gap:10px;margin-bottom:4px;padding:16px;display:flex}.onboard-summary__row{justify-content:space-between;align-items:flex-start;gap:16px;font-size:13.5px;display:flex}.onboard-summary__row span{color:var(--txt3);flex-shrink:0}.onboard-summary__row strong{color:var(--txt);text-align:right;font-weight:600;line-height:1.45}.onboard-nav{gap:10px;margin-top:20px;display:flex}.onboard-nav .btn-secondary{flex:none;min-width:96px}.onboard-nav__primary{flex:1;margin-top:0}.btn-secondary{background:var(--surf);height:48px;color:var(--txt2);border:1.5px solid var(--bdr2);border-radius:var(--r-sm);cursor:pointer;font-size:14px;font-weight:600;font-family:var(--font-ui);padding:0 18px;transition:background .15s,border-color .15s,color .15s}.btn-secondary:hover{background:var(--surf-low);border-color:var(--bdr3);color:var(--txt)}:root[data-theme=dark] .subject-pill.selected,:root[data-theme=dark] .goal-card.selected{background:#f9731624}.app-layout{height:100dvh;display:flex;overflow:hidden}.sidebar{width:var(--sidebar-w);background:var(--surf-low);border-right:1px solid var(--bdr2);z-index:20;flex-direction:column;flex-shrink:0;display:flex}.sb-brand{border-bottom:1px solid var(--bdr);flex-shrink:0;align-items:center;gap:10px;padding:16px 14px 14px;transition:opacity .15s;display:flex}.sb-brand:hover{opacity:.8}.sb-brand img{object-fit:contain;width:auto;height:36px}.sb-brand-text .name{font-size:14px;font-weight:700;font-family:var(--font-display);color:var(--txt);line-height:1.2}.sb-brand-text .sub{color:var(--txt3);margin-top:1px;font-size:11px}.sb-nav{border-bottom:1px solid var(--bdr);flex-direction:column;flex-shrink:0;gap:2px;padding:10px 8px;display:flex}.sb-nav-link{border-radius:var(--r-sm);cursor:pointer;text-align:left;color:var(--txt2);width:100%;font-size:13.5px;font-weight:500;font-family:var(--font-ui);background:0 0;border:none;align-items:center;gap:11px;padding:10px 12px;text-decoration:none;transition:background .12s,color .12s;display:flex}.sb-nav-link:hover{background:var(--surf-mid);color:var(--txt)}.sb-nav-link__icon{flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;display:inline-flex}.sb-nav-link .material-symbols-outlined{color:var(--txt3);font-size:20px;line-height:1;transition:color .12s}.sb-nav-link:hover .material-symbols-outlined{color:var(--txt2)}.sb-nav-link.active{background:var(--orange-soft);color:var(--orange-dim);box-shadow:inset 3px 0 0 var(--orange);font-weight:600}.sb-nav-link.active .material-symbols-outlined{color:var(--orange);font-variation-settings:"FILL" 1,"wght" 500,"GRAD" 0,"opsz" 24}.sb-nav-link:active{transform:scale(.99)}.sb-nav-link>span:last-child{flex:1;min-width:0}.sb-history{scrollbar-width:thin;scrollbar-color:var(--bdr3) transparent;flex:1;padding:8px 6px 12px;overflow-y:auto}.sb-lbl{color:var(--txt4);text-transform:uppercase;letter-spacing:.06em;padding:6px 10px 7px;font-size:11px;font-weight:700}.hist-item{border-radius:var(--r-sm);cursor:pointer;text-align:left;width:100%;font:inherit;color:inherit;background:0 0;border:none;align-items:flex-start;gap:9px;margin-bottom:1px;padding:8px 10px;transition:background .12s;display:flex}.hist-item:hover{background:var(--surf-mid)}.hist-item.active{background:var(--orange-soft)}.hist-item:active:not(:disabled){transform:scale(.98)}.hist-item .material-symbols-outlined{color:var(--txt4);flex-shrink:0;margin-top:2px;font-size:14px}.hist-item.active .material-symbols-outlined{color:var(--orange)}.hist-item__text{flex:1;min-width:0}.sb-history__head{flex-shrink:0;justify-content:space-between;align-items:center;gap:8px;padding:0 16px 6px;display:flex}.sb-history__head .sb-lbl{flex:1;min-width:0}#chat-history-list{min-height:0}.hist-skeletons{flex-direction:column;gap:6px;padding:0 8px;display:flex}.hist-skeleton-row{border-radius:var(--r-sm);background:linear-gradient(90deg,var(--surf-mid) 0%,var(--surf-low) 50%,var(--surf-mid) 100%);background-size:200% 100%;height:44px;animation:1.2s ease-in-out infinite hist-shimmer}@keyframes hist-shimmer{0%{background-position:100% 0}to{background-position:-100% 0}}@media (prefers-reduced-motion:reduce){.hist-skeleton-row{background:var(--surf-mid);animation:none}}.hist-empty,.hist-error{color:var(--txt3);flex-direction:column;align-items:flex-start;gap:6px;margin:0 8px;padding:10px 14px;font-size:12px;display:flex}.hist-empty .material-symbols-outlined,.hist-error .material-symbols-outlined{opacity:.55;font-size:18px}.hist-empty p,.hist-error p{margin:0;line-height:1.45}.hist-error{color:var(--error)}.hist-error__retry{margin-top:2px;padding:5px 10px;font-size:11px}.ht{color:var(--txt);text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:600;line-height:1.3;overflow:hidden}.hs{color:var(--txt3);text-overflow:ellipsis;white-space:nowrap;margin-top:1px;font-size:11px;overflow:hidden}.sb-footer{border-top:1px solid var(--bdr);flex-shrink:0;padding:10px 8px}.main{background:var(--bg);flex-direction:column;flex:1;display:flex;overflow:hidden}.system-banner{border-bottom:1px solid var(--bdr2);padding:8px 14px;font-size:12.5px;font-weight:600;display:none}.system-banner.warn{color:#9a3412;background:#fff7ed;border-color:#fed7aa}.system-banner.error{color:#991b1b;background:#fef2f2;border-color:#fecaca}.system-banner.ok{display:none}.main-hdr{height:var(--hdr-h);border-bottom:1px solid var(--bdr2);background:var(--surf);box-shadow:var(--shadow-hdr);-webkit-backdrop-filter:saturate(1.1);backdrop-filter:saturate(1.1);flex-shrink:0;justify-content:space-between;align-items:center;padding:0 18px;display:flex}.hdr-left{align-items:center;gap:10px;display:flex}.hdr-right{align-items:center;gap:6px;display:flex}.menu-btn{border-radius:var(--r-sm);cursor:pointer;width:36px;height:36px;color:var(--txt2);background:0 0;border:none;justify-content:center;align-items:center;display:none}.hdr-badge{border-radius:var(--r-full);background:var(--surf-mid);color:var(--txt2);align-items:center;gap:5px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.hdr-badge.orange{background:var(--orange-soft);color:var(--orange-dim)}.ic-round{cursor:pointer;width:34px;height:34px;color:var(--txt3);font-family:var(--font-ui);background:0 0;border:none;border-radius:50%;justify-content:center;align-items:center;transition:background .12s;display:flex}.ic-round:hover{background:var(--surf-mid);color:var(--txt2)}.avatar{background:linear-gradient(145deg,var(--orange-hover),var(--orange));color:#fff;cursor:pointer;border:2px solid var(--orange-soft);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:14px;font-weight:700;transition:transform .15s cubic-bezier(.16,1,.3,1),box-shadow .15s;display:flex;box-shadow:0 2px 8px #f9731638}.avatar:hover{transform:translateY(-1px);box-shadow:0 4px 12px #f9731647}.avatar:active{transform:scale(.96)}.msg-avatar{border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;font-size:13px;font-weight:700;display:flex}.bubble{background:var(--surf);border:1px solid var(--bdr2);border-radius:var(--r);max-width:68%;box-shadow:var(--shadow-hdr);padding:11px 15px}.sender{color:var(--txt3);text-transform:uppercase;letter-spacing:.05em;margin-bottom:4px;font-size:11px;font-weight:700}.content-body{color:var(--txt);font-size:14px;line-height:1.75;font-family:var(--font-body)}.content-body p{margin-bottom:8px}.content-body ul,.content-body ol{margin-bottom:8px;padding-left:18px}.content-body code{background:var(--surf-mid);border-radius:4px;padding:2px 5px;font-size:12.5px}.content-body pre{background:var(--surf-mid);border-radius:var(--r-sm);margin:8px 0;padding:10px 12px;overflow-x:auto}@keyframes fadeUp{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.input-row{background:var(--surf);border:1.5px solid var(--bdr2);border-radius:var(--r-full);align-items:center;gap:8px;padding:6px 8px;transition:border-color .2s,box-shadow .2s,background .2s;display:flex;box-shadow:0 2px 8px #1a1a180a}.input-row:focus-within{border-color:var(--orange);background:var(--surf);box-shadow:0 0 0 3px var(--focus-ring),0 4px 14px #f9731614}.ic-btn{cursor:pointer;width:30px;height:30px;color:var(--txt3);font-family:var(--font-ui);background:0 0;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;transition:background .12s;display:flex}.ic-btn:hover{background:var(--surf-mid);color:var(--txt2)}.ic-btn:active:not(:disabled){transform:scale(.93)}.ic-btn:disabled{opacity:.45;cursor:not-allowed}.ic-btn .material-symbols-outlined{font-size:19px}.chat-input{color:var(--txt);font-size:14px;font-family:var(--font-body);background:0 0;border:none;outline:none;flex:1}.chat-input::placeholder{color:var(--txt4)}.send-btn{background:linear-gradient(145deg,var(--orange-hover),var(--orange));cursor:pointer;color:#fff;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:32px;height:32px;transition:background .2s,transform .15s cubic-bezier(.16,1,.3,1),box-shadow .2s,opacity .2s;display:flex;box-shadow:0 2px 8px 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1fr;align-items:start;gap:36px 48px;display:grid}.roadmap-path-sidebar{position:sticky;top:16px}}.roadmap-path-sidebar .roadmap-game-stats{flex-direction:column;margin-bottom:16px}.roadmap-path-sidebar .roadmap-game-stat{justify-content:flex-start;width:100%}.roadmap-page__hdr{flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:20px;display:flex}.roadmap-page__title{font-family:var(--font-display);color:var(--txt);letter-spacing:-.02em;margin:0;font-size:24px;font-weight:800}.roadmap-page__sub{color:var(--txt3);font-size:13px;font-family:var(--font-body);margin:6px 0 0}.roadmap-page__filters{flex-wrap:wrap;gap:8px;margin-bottom:20px;display:flex}.roadmap-inline-err{color:var(--error);background:var(--error-bg);border-radius:var(--r);justify-content:space-between;align-items:center;gap:10px;margin-bottom:16px;padding:10px 14px;font-size:13px;display:flex}.roadmap-inline-err button{cursor:pointer;color:var(--txt3);background:0 0;border:none;padding:2px;display:flex}.roadmap-back{color:var(--txt3);cursor:pointer;background:0 0;border:none;align-items:center;gap:6px;margin-bottom:20px;padding:0;font-size:13px;font-weight:600;display:inline-flex}.roadmap-back:hover{color:var(--orange)}.roadmap-card-grid{grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px;display:grid}@media (width>=1100px){.roadmap-card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}.roadmap-card{background:var(--surf);border:1px solid var(--bdr);border-radius:var(--r);flex-direction:column;padding:22px 20px 18px;transition:transform .2s,box-shadow .2s,border-color .2s;display:flex}.roadmap-card:hover{border-color:var(--road-accent,var(--orange-soft));transform:translateY(-2px);box-shadow:0 8px 20px #0000000a}@media 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14px;font-size:11px;font-weight:700}.roadmap-card__progress{margin-bottom:16px}.roadmap-card__progress-meta{color:var(--txt3);justify-content:space-between;margin-bottom:6px;font-size:11px;font-weight:600;display:flex}.roadmap-card__progress-track{background:var(--surf-low);border-radius:99px;height:6px;overflow:hidden}.roadmap-card__progress-fill{background:var(--road-accent,var(--orange));border-radius:99px;height:100%;transition:width .35s}.roadmap-card__actions .button{justify-content:center;width:100%}.roadmap-path-hdr{flex-wrap:wrap;align-items:flex-start;gap:14px;margin-bottom:18px;display:flex}.roadmap-path-hdr__icon{border-radius:var(--r);flex-shrink:0;justify-content:center;align-items:center;width:52px;height:52px;display:flex}.roadmap-path-hdr__icon .material-symbols-outlined{font-size:28px!important}.roadmap-path-hdr__title{font-family:var(--font-display);color:var(--txt);margin:0 0 4px;font-size:22px;font-weight:800}.roadmap-path-hdr__sub{color:var(--txt3);margin:0;font-size:13px}.roadmap-path-hdr__regen{margin-left:auto}.roadmap-game-stats{flex-wrap:wrap;gap:10px;margin-bottom:12px;display:flex}.roadmap-game-stat{border-radius:var(--r-full);background:var(--surf);border:1px solid var(--bdr2);color:var(--txt2);align-items:center;gap:6px;padding:8px 14px;font-size:13px;font-weight:700;display:inline-flex}.roadmap-game-stat .material-symbols-outlined{font-size:18px!important}.roadmap-game-stat--xp{background:var(--orange-pale);border-color:var(--orange-soft);color:var(--orange-dim)}.roadmap-game-stat--xp .material-symbols-outlined{color:var(--orange)}.roadmap-game-stat--pct .roadmap-progress-pct{font-size:15px}.roadmap-progress-wrap--game{margin-bottom:28px}.roadmap-trail{flex-direction:column;align-items:center;gap:0;width:100%;max-width:min(520px,100%);margin:0 auto;padding:8px 0 24px;display:flex}@media (width>=900px){.roadmap-trail{max-width:min(680px,100%)}.roadmap-step-card{max-width:300px}.roadmap-orb{width:72px;height:72px}}@media (width>=1100px){.roadmap-trail{max-width:720px;margin:0}}.roadmap-trail-step{flex-direction:column;align-items:center;width:100%;padding:0 12px 28px;display:flex;position:relative}.roadmap-trail-step--left .roadmap-step-card{align-self:flex-start;margin-left:8px}.roadmap-trail-step--right .roadmap-step-card{align-self:flex-end;margin-right:8px}.roadmap-trail-connector{background:var(--surf-mid);border-radius:99px;width:4px;height:36px;margin-bottom:8px}.roadmap-trail-connector--done{background:var(--success)}.roadmap-trail-connector--current{background:linear-gradient(180deg, var(--success) 0%, var(--orange) 100%)}.roadmap-orb{border:4px solid var(--surf-high);background:var(--surf);cursor:pointer;width:64px;height:64px;box-shadow:0 4px 0 var(--surf-mid);z-index:1;border-radius:50%;justify-content:center;align-items:center;transition:transform .15s,box-shadow .15s;display:flex;position:relative}.roadmap-orb .material-symbols-outlined{color:var(--txt3);font-size:28px!important}.roadmap-orb--done{background:var(--success);border-color:#059669;box-shadow:0 4px #047857}.roadmap-orb--done .material-symbols-outlined{color:#fff}.roadmap-orb--current{background:var(--orange);border-color:var(--orange-hover);box-shadow:0 4px 0 var(--orange-hover);transform:scale(1.05)}.roadmap-orb--current .material-symbols-outlined{color:#fff}.roadmap-orb--locked{background:var(--surf-low);cursor:not-allowed;opacity:.75;box-shadow:0 3px 0 var(--surf-mid)}.roadmap-orb:not(:disabled):hover{transform:scale(1.08)}.roadmap-orb__pulse{border:2px solid var(--orange-soft);pointer-events:none;border-radius:50%;animation:1.8s ease-out infinite roadmap-pulse;position:absolute;inset:-8px}@keyframes roadmap-pulse{0%{opacity:.9;transform:scale(.92)}70%{opacity:0;transform:scale(1.15)}to{opacity:0;transform:scale(1.15)}}.roadmap-step-card{border-radius:var(--r);background:var(--surf);border:1px solid var(--bdr2);text-align:left;max-width:260px;margin-top:12px;padding:10px 14px}.roadmap-step-card--done{background:var(--success-bg);border-color:#86efac}.roadmap-step-card--current{border-color:var(--orange-soft);box-shadow:0 4px 14px #f973161f}.roadmap-step-card--locked{opacity:.55}.roadmap-step-card__type{text-transform:uppercase;letter-spacing:.05em;color:var(--txt3);margin-bottom:4px;font-size:10px;font-weight:700}.roadmap-step-card__title{color:var(--txt);font-size:13px;font-weight:600;line-height:1.35}.roadmap-step-card__meta{color:var(--txt3);margin-top:4px;font-size:11px}.roadmap-trail-finish{color:var(--txt3);flex-direction:column;align-items:center;gap:4px;margin-top:8px;font-size:12px;font-weight:600;display:flex}.roadmap-trail-finish .material-symbols-outlined{color:var(--chemistry);font-size:32px!important}.roadmap-progress-wrap{margin-bottom:20px}.roadmap-progress-meta{color:var(--txt3);justify-content:space-between;margin-bottom:6px;font-size:12px;font-weight:600;display:flex}.roadmap-progress-pct{color:var(--orange)}.roadmap-progress-track{background:var(--surf-low);border-radius:99px;height:6px;overflow:hidden}.roadmap-progress-fill{background:var(--orange);border-radius:99px;height:100%;transition:width .4s}.roadmap-empty{text-align:center;background:var(--surf);border:1px dashed var(--bdr2);border-radius:var(--r);padding:48px 32px}.roadmap-empty__icon{color:var(--orange);margin-bottom:12px;font-size:48px}.roadmap-empty__msg{color:var(--txt);margin:0 0 6px;font-size:16px;font-weight:700}.roadmap-empty__hint{color:var(--txt3);margin:0 0 20px;font-size:13px}.roadmap-nodes{flex-direction:column;gap:10px;display:flex}.roadmap-node{border:1px solid var(--bdr2);background:var(--surf);cursor:pointer;text-align:left;border-radius:12px;align-items:center;gap:14px;width:100%;padding:14px 16px;transition:border-color .15s,transform .1s,box-shadow .15s;display:flex}.roadmap-node:hover{border-color:var(--orange-soft);transform:translate(3px);box-shadow:0 2px 10px #f9731614}.roadmap-node--done{background:#f0fdf4;border-color:#86efac}.roadmap-node--done:hover{border-color:#4ade80;box-shadow:0 2px 10px #22c55e14}.roadmap-node__num{background:var(--orange-soft);width:34px;height:34px;color:var(--orange);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:13px;font-weight:700;display:flex}.roadmap-node__num.done{color:#fff;background:#4ade80}.roadmap-node__num.done .material-symbols-outlined{font-size:18px!important}.roadmap-node__body{flex:1;min-width:0}.roadmap-node__title{color:var(--txt);font-size:14px;font-weight:600;line-height:1.4}.roadmap-node__meta{color:var(--txt4,var(--txt3));align-items:center;gap:4px;margin-top:3px;font-size:11px;display:flex}.roadmap-node__type-icon{font-size:13px!important}.roadmap-node__arrow{color:var(--txt3);flex-shrink:0;font-size:16px}.roadmap-node--done .roadmap-node__arrow{color:#4ade80}:root[data-theme=dark] .sidebar{background:var(--surf-low);border-right-color:var(--bdr2)}:root[data-theme=dark] .dash-hero{border-color:color-mix(in srgb, var(--orange) 42%, var(--bdr2));box-shadow:inset 0 1px #ffffff14,0 12px 32px #00000047}:root[data-theme=dark] .dash-hero__video{opacity:.88;filter:saturate(1.12)contrast(1.06)brightness(.92)}:root[data-theme=dark] .dash-hero__media-shine{mix-blend-mode:overlay;background:linear-gradient(145deg,#ffffff14 0%,#0000 40%)}:root[data-theme=dark] .dash-hero__media-grain{opacity:.055}:root[data-theme=dark] .dash-hero__glow{background:radial-gradient(circle, color-mix(in srgb, var(--orange) 38%, transparent), transparent 68%)}:root[data-theme=dark] .dash-hero .dash-pill{background:color-mix(in srgb, var(--surf-mid) 86%, transparent);box-shadow:inset 0 1px #ffffff0f}:root[data-theme=dark] .dash-pill{background:var(--surf-mid);border-color:var(--bdr2)}:root[data-theme=dark] .dash-card--vivid{background:linear-gradient(180deg, color-mix(in srgb, var(--orange) 18%, var(--surf)) 0%, var(--surf) 52px);border-color:color-mix(in srgb, var(--orange) 38%, var(--bdr2))}:root[data-theme=dark] .dash-quick-btn{background:color-mix(in srgb, var(--qa-color) 16%, var(--surf-mid));border-color:color-mix(in srgb, var(--qa-color) 40%, var(--bdr2));color:var(--txt)}:root[data-theme=dark] .dash-quick-btn:hover{background:color-mix(in srgb, var(--qa-color) 24%, var(--surf-high));box-shadow:0 8px 22px color-mix(in srgb, var(--qa-color) 28%, transparent)}:root[data-theme=dark] .dash-quick-btn__icon{background:color-mix(in srgb, var(--qa-color) 26%, var(--surf-high));color:var(--qa-color)}:root[data-theme=dark] .dash-session-row:hover{background:var(--surf-mid)}:root[data-theme=dark] .exam-action-btn{background:var(--surf-mid);border:1px solid var(--bdr2)}:root[data-theme=dark] .exam-action-btn--ghost{border-color:var(--bdr2);background:0 0}:root[data-theme=dark] .exam-history-row:hover{background:var(--surf-mid)}:root[data-theme=dark] .roadmap-card{border-color:var(--bdr2);box-shadow:var(--shadow-card)}:root[data-theme=dark] .roadmap-orb{background:var(--surf-mid);border-color:var(--bdr3);box-shadow:0 4px 0 var(--surf-high)}:root[data-theme=dark] .roadmap-orb--locked{background:var(--surf-low);opacity:.85}:root[data-theme=dark] .roadmap-step-card{background:var(--surf);border-color:var(--bdr2)}:root[data-theme=dark] .roadmap-step-card--done{background:color-mix(in srgb, var(--success) 12%, var(--surf));border-color:color-mix(in srgb, var(--success) 35%, var(--bdr2))}:root[data-theme=dark] .chat-subject-pill{background:var(--surf-mid);border-color:var(--bdr2)}:root[data-theme=dark] .chat-subject-pill.active{background:color-mix(in srgb, var(--pill-color) 24%, var(--surf-mid));border-color:var(--pill-color);color:var(--pill-color);box-shadow:0 0 0 1px color-mix(in srgb, var(--pill-color) 22%, transparent)}:root[data-theme=dark] .chat-quick-chip{background:var(--surf-mid);border-color:var(--bdr2)}:root[data-theme=dark] .chat-ai-status{background:color-mix(in srgb, var(--orange) 14%, var(--surf-low));border-bottom-color:color-mix(in srgb, var(--orange) 28%, var(--bdr2))}:root[data-theme=dark] .chat-welcome__icon{background:color-mix(in srgb, var(--orange) 20%, var(--surf-mid));color:var(--orange)}:root[data-theme=dark] .input,:root[data-theme=dark] .input-wrap{background:var(--surf-mid);border-color:var(--bdr2)}:root[data-theme=dark] .input-wrap:focus-within{background:var(--surf-high)}:root[data-theme=dark] .sidebar-backdrop{background:#0c10148c}:root[data-theme=dark] .lang-toggle{background:var(--surf-mid);border-color:var(--bdr2)}:root[data-theme=dark] .ic-round:hover{background:var(--surf-mid);color:var(--txt)}:root[data-theme=dark] .main-hdr{background:linear-gradient(180deg, color-mix(in srgb, var(--orange) 12%, var(--surf)) 0%, var(--surf) 80%)}:root[data-theme=dark] .dash-insight-card{border-color:color-mix(in srgb, var(--orange) 36%, var(--bdr2));box-shadow:var(--shadow-card)}:root[data-theme=dark] .dash-insight-card p{color:var(--orange-dim)}:root[data-theme=dark] .dash-pill--streak{border-color:color-mix(in srgb, var(--success) 40%, var(--bdr2));background:color-mix(in srgb, var(--success) 14%, var(--surf-mid))}:root[data-theme=dark] .dash-hero{box-shadow:inset 0 1px 0 #ffffff12, var(--shadow-card)}@media (width<=768px){body.onboard-tour-active .sidebar.sidebar-open{z-index:9999}body.onboard-tour-active .sidebar-backdrop{display:none}}.onboard-tour{z-index:10000;pointer-events:none;position:fixed;inset:0}.onboard-tour__mask{pointer-events:auto;width:100%;height:100%;position:absolute;inset:0}.onboard-tour__ring{border:2px solid var(--orange);box-shadow:0 0 0 4px color-mix(in srgb, var(--orange) 25%, transparent);pointer-events:none;border-radius:14px;transition:top .25s,left .25s,width .25s,height .25s;position:fixed}.onboard-tour__card{background:var(--surf);border:1px solid var(--bdr2);border-radius:var(--r-lg,16px);width:min(360px,100vw - 32px);box-shadow:var(--shadow-float,0 12px 40px #0000002e);pointer-events:auto;padding:20px;transition:top .25s,left .25s;position:fixed}.onboard-tour__card-head{align-items:flex-start;gap:12px;margin-bottom:12px;display:flex}.onboard-tour__icon{background:var(--orange-pale);width:40px;height:40px;color:var(--orange);border-radius:12px;flex-shrink:0;justify-content:center;align-items:center;display:flex;font-size:22px!important}.onboard-tour__step-label{color:var(--txt4);letter-spacing:.06em;text-transform:uppercase;margin:0 0 2px;font-size:11px;font-weight:600}.onboard-tour__title{color:var(--txt);font-size:17px;font-weight:800;font-family:var(--font-display);margin:0;line-height:1.25}.onboard-tour__body{color:var(--txt2);margin:0 0 16px;font-size:13px;line-height:1.65}.onboard-tour__progress{gap:6px;margin-bottom:16px;display:flex}.onboard-tour__dot{background:var(--bdr);border-radius:50%;width:8px;height:8px;transition:background .2s,transform .2s}.onboard-tour__dot.active{background:var(--orange);transform:scale(1.15)}.onboard-tour__actions{justify-content:space-between;align-items:center;gap:12px;display:flex}.onboard-tour__skip{color:var(--txt3);cursor:pointer;text-underline-offset:2px;background:0 0;border:none;padding:0;font-size:12px;text-decoration:underline}.onboard-tour__skip:hover{color:var(--txt2)}.onboard-tour__nav{gap:8px;margin-left:auto;display:flex}.onboard-tour__back,.onboard-tour__next{padding:8px 14px;font-size:13px}.smart-hints{background:var(--surf);border:1px solid var(--bdr2);border-radius:var(--r);padding:16px 18px}.smart-hints__head{align-items:center;gap:8px;margin-bottom:12px;display:flex}.smart-hints__head 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