:root{--bg: #f6f7fb;--surface: #ffffff;--surface-2: #eef1f8;--text: #1c2333;--text-dim: #5a647a;--primary: #1a3a6b;--primary-soft: #e3ebf8;--accent: #d97b12;--accent-soft: #fdf0dd;--green: #1e7a44;--green-soft: #e2f4e9;--red: #b3362c;--red-soft: #fbe7e5;--border: #dde2ee;--radius: 12px;--shadow: 0 1px 3px rgba(20, 30, 60, .08)}@media (prefers-color-scheme: dark){:root{--bg: #12151d;--surface: #1b1f2a;--surface-2: #232937;--text: #e8ebf2;--text-dim: #9aa3b8;--primary: #7aa2e0;--primary-soft: #23304a;--accent: #e8a04c;--accent-soft: #3a2d18;--green: #58c184;--green-soft: #1c3327;--red: #e2766c;--red-soft: #3d211f;--border: #313849;--shadow: 0 1px 3px rgba(0, 0, 0, .4)}}*{box-sizing:border-box}body{margin:0;font-family:Segoe UI,system-ui,-apple-system,Noto Sans,Noto Sans Devanagari,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}a{color:var(--primary);text-decoration:none}.layout{display:flex;min-height:100vh}.sidebar{width:230px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--border);padding:20px 14px;display:flex;flex-direction:column;gap:4px;position:sticky;top:0;height:100vh}.brand{font-weight:800;font-size:1.15rem;color:var(--primary);margin-bottom:2px}.brand-tag{font-size:.72rem;color:var(--text-dim);margin-bottom:18px;line-height:1.35}.nav-link{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:10px;color:var(--text);font-size:.95rem}.nav-link:hover{background:var(--surface-2)}.nav-link.active{background:var(--primary-soft);color:var(--primary);font-weight:600}.lang-switch{margin-top:auto;display:flex;border:1px solid var(--border);border-radius:10px;overflow:hidden}.lang-switch button{flex:1;padding:8px 0;border:none;background:transparent;color:var(--text-dim);cursor:pointer;font-size:.9rem}.lang-switch button.on{background:var(--primary);color:#fff;font-weight:600}.main{flex:1;padding:28px 32px 64px;max-width:980px;margin:0 auto;width:100%}h1{font-size:1.6rem;margin:0 0 6px}h2{font-size:1.25rem;margin:28px 0 10px}.subtitle{color:var(--text-dim);margin:0 0 22px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}.grid{display:grid;gap:14px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}.stat-row{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));margin-bottom:22px}.stat{text-align:center}.stat .num{font-size:1.9rem;font-weight:800;color:var(--primary)}.stat .lbl{font-size:.82rem;color:var(--text-dim)}.btn{display:inline-flex;align-items:center;gap:8px;padding:9px 16px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-size:.92rem;cursor:pointer}.btn:hover{background:var(--surface-2)}.btn.primary{background:var(--primary);border-color:var(--primary);color:#fff;font-weight:600}.btn.primary:hover{opacity:.92}.btn.small{padding:5px 11px;font-size:.84rem}.btn:disabled{opacity:.5;cursor:not-allowed}.toolbar{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 22px}.chapter-item{display:block;padding:16px 18px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);margin-bottom:10px;color:var(--text)}.chapter-item:hover{border-color:var(--primary)}.chapter-item.soon{opacity:.55;cursor:default}.chapter-item .meta{font-size:.8rem;color:var(--text-dim)}.content-section p{margin:10px 0}.content-section ul,.content-section ol{padding-left:22px}.content-section li{margin:7px 0}.note-box{border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:8px;padding:12px 16px;margin:16px 0}.note-box .note-title{font-weight:700;color:var(--accent);font-size:.9rem;margin-bottom:4px}.note-box.note-why{border-left-color:var(--primary);background:var(--primary-soft)}.note-box.note-why .note-title{color:var(--primary)}.note-box.note-analogy{border-left-color:var(--green);background:var(--green-soft)}.note-box.note-analogy .note-title{color:var(--green)}.note-box.note-story{border-left-color:#7a5bd4;background:color-mix(in srgb,#7a5bd4 12%,var(--surface))}.note-box.note-story .note-title{color:#7a5bd4}.note-box.note-trap{border-left-color:var(--red);background:var(--red-soft)}.note-box.note-trap .note-title{color:var(--red)}.note-box.note-info{border-left-color:var(--text-dim);background:var(--surface-2)}.note-box.note-info .note-title{color:var(--text-dim)}.figure{margin:20px 0}.fig-svg{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px}.fig-caption{text-align:center;color:var(--text-dim);font-size:.84rem;margin-top:8px;font-style:italic}.timeline{list-style:none;padding:0;margin:18px 0;position:relative}.timeline:before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--border)}.timeline-item{position:relative;padding:0 0 16px 30px}.timeline-dot{position:absolute;left:0;top:4px;width:16px;height:16px;border-radius:50%;background:var(--accent);border:3px solid var(--surface);box-shadow:0 0 0 2px var(--accent)}.timeline-when{font-weight:800;color:var(--primary);font-size:.92rem}.timeline-label{color:var(--text);font-size:.93rem}.takeaways{border:2px solid var(--green);background:var(--green-soft);border-radius:var(--radius);padding:18px 22px;margin:30px 0}.takeaways h2{margin-top:0;color:var(--green)}.takeaways li{margin:9px 0}table.content-table{border-collapse:collapse;width:100%;margin:14px 0;font-size:.93rem}.table-wrap{overflow-x:auto}.content-table caption{caption-side:top;text-align:left;font-weight:600;color:var(--text-dim);font-size:.85rem;padding-bottom:6px}.content-table th,.content-table td{border:1px solid var(--border);padding:9px 12px;text-align:left;vertical-align:top}.content-table th{background:var(--primary-soft);color:var(--primary)}.content-table tr:nth-child(2n) td{background:var(--surface-2)}.option{display:block;width:100%;text-align:left;padding:11px 14px;margin:8px 0;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);cursor:pointer;font-size:.95rem}.option:hover{border-color:var(--primary)}.option.selected{border-color:var(--primary);background:var(--primary-soft)}.option.correct{border-color:var(--green);background:var(--green-soft)}.option.wrong{border-color:var(--red);background:var(--red-soft)}.explanation{border-left:4px solid var(--primary);background:var(--primary-soft);border-radius:8px;padding:10px 14px;margin-top:12px;font-size:.92rem}.palette{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.palette button{width:38px;height:38px;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;font-size:.85rem}.palette button.answered{background:var(--green-soft);border-color:var(--green)}.palette button.review{background:var(--accent-soft);border-color:var(--accent)}.palette button.current{outline:3px solid var(--primary)}.timer{font-size:1.3rem;font-weight:800;color:var(--primary);font-variant-numeric:tabular-nums}.timer.low{color:var(--red)}.chat{display:flex;flex-direction:column;gap:12px;margin-bottom:16px}.msg{max-width:85%;padding:11px 15px;border-radius:14px;white-space:pre-wrap}.msg.user{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:4px}.msg.ai{align-self:flex-start;background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:4px}.chat-input{display:flex;gap:8px}.chat-input textarea{flex:1;resize:none;padding:11px 14px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);font-family:inherit;font-size:.95rem}.field{margin-bottom:16px}.field label{display:block;font-size:.86rem;font-weight:600;margin-bottom:5px}.field input,.field select{width:100%;max-width:420px;padding:9px 12px;border:1px solid var(--border);border-radius:9px;background:var(--surface);color:var(--text);font-size:.93rem}.field .hint{font-size:.78rem;color:var(--text-dim);margin-top:4px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0a0e198c;display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}.modal{background:var(--surface);border-radius:var(--radius);padding:22px 24px;max-width:480px;width:100%}.modal textarea{width:100%;min-height:100px;padding:10px 12px;margin:10px 0;border:1px solid var(--border);border-radius:9px;background:var(--bg);color:var(--text);font-family:inherit}.badge{display:inline-block;padding:2px 10px;border-radius:999px;font-size:.75rem;font-weight:600}.badge.green{background:var(--green-soft);color:var(--green)}.badge.orange{background:var(--accent-soft);color:var(--accent)}.error-text{color:var(--red);font-size:.88rem}@media (max-width: 760px){.layout{flex-direction:column}.sidebar{width:100%;height:auto;position:static;flex-direction:row;flex-wrap:wrap;align-items:center}.brand-tag{display:none}.lang-switch{margin-top:0;margin-left:auto}.main{padding:18px 16px 48px}}@media print{.sidebar,.toolbar,.no-print{display:none!important}.main{padding:0;max-width:none}body{background:#fff;color:#000}.card,.takeaways,.note-box{box-shadow:none;break-inside:avoid}}.landing{min-height:100vh;background:var(--bg)}.landing-nav{display:flex;align-items:center;justify-content:space-between;padding:16px 28px;max-width:1120px;margin:0 auto}.landing-nav .brand{font-size:1.25rem}.landing-nav .nav-actions{display:flex;gap:10px;align-items:center}.landing-hero{max-width:1120px;margin:0 auto;padding:48px 28px 40px;display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center}.landing-hero h1{font-size:2.6rem;line-height:1.15;margin:0 0 16px}.landing-hero h1 .accent{color:var(--primary)}.landing-hero p.lead{font-size:1.15rem;color:var(--text-dim);margin:0 0 24px}.hero-cta{display:flex;gap:12px;flex-wrap:wrap}.btn.lg{padding:13px 26px;font-size:1.02rem;border-radius:12px}.hero-badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.hero-art{background:linear-gradient(160deg,var(--primary),#2a5298);border-radius:20px;padding:30px;color:#fff;box-shadow:0 20px 50px #141e3c40}.hero-art .stat-line{display:flex;justify-content:space-between;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.15)}.hero-art .stat-line:last-child{border-bottom:none}.hero-art .big{font-size:2rem;font-weight:800}.landing-section{max-width:1120px;margin:0 auto;padding:40px 28px}.landing-section h2{text-align:center;font-size:1.8rem;margin:0 0 6px}.landing-section .section-sub{text-align:center;color:var(--text-dim);margin:0 0 30px}.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:22px;transition:transform .15s,box-shadow .15s}.feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow)}.feature-card .fi{font-size:1.8rem}.feature-card h3{margin:10px 0 6px;font-size:1.1rem}.feature-card p{margin:0;color:var(--text-dim);font-size:.92rem}.landing-band{background:var(--primary);color:#fff}.landing-band .landing-section{text-align:center}.landing-band h2{color:#fff}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-top:20px}.step .num{width:42px;height:42px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 10px}.landing-cta-final{text-align:center;padding:56px 28px}.landing-footer{text-align:center;color:var(--text-dim);font-size:.85rem;padding:24px;border-top:1px solid var(--border)}@media (max-width: 820px){.landing-hero{grid-template-columns:1fr;padding-top:28px}.landing-hero h1{font-size:2rem}.hero-art{order:-1}}.msg .md{white-space:normal}.md>:first-child{margin-top:0}.md>:last-child{margin-bottom:0}.md-p{margin:0 0 8px;line-height:1.5}.md-h{margin:12px 0 6px;line-height:1.3}.md-ul,.md-ol{margin:6px 0 8px;padding-left:20px}.md-ul li,.md-ol li{margin:2px 0;line-height:1.45}.md-code{background:var(--surface-2);border:1px solid var(--border);border-radius:5px;padding:1px 5px;font-size:.86em;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.md-pre{background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:10px 12px;overflow-x:auto;margin:8px 0}.md-pre code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.85em}.md-quote{margin:8px 0;padding:4px 12px;border-left:3px solid var(--primary);color:var(--text-dim);background:var(--surface-2);border-radius:0 6px 6px 0}.md-hr{border:none;border-top:1px solid var(--border);margin:12px 0}.md-table-wrap{overflow-x:auto;margin:8px 0}.md-table{border-collapse:collapse;width:100%;font-size:.9em}.md-table th,.md-table td{border:1px solid var(--border);padding:6px 10px;text-align:left;vertical-align:top}.md-table th{background:var(--surface-2);font-weight:700}.md-table tr:nth-child(2n) td{background:color-mix(in srgb,var(--surface-2) 45%,transparent)}.msg.user .md-table th,.msg.user .md-table td{border-color:#ffffff59}.mentor-page{display:flex;flex-direction:column;height:calc(100dvh - 100px)}.chat-scroll{flex:1;min-height:0;overflow-y:auto;padding-right:4px;overscroll-behavior:contain}.mentor-page .chat-input{flex-shrink:0;margin-top:4px}.typing{opacity:.6}@media (max-width: 820px){.mentor-page{height:auto}.mentor-page .chat-scroll{height:52dvh;min-height:240px;flex:none}}.mentor-fab{position:fixed;right:22px;bottom:22px;z-index:60;width:58px;height:58px;border-radius:50%;border:none;cursor:pointer;background:var(--primary);color:#fff;font-size:1.5rem;box-shadow:0 6px 20px #141e3c47;display:flex;align-items:center;justify-content:center;transition:transform .15s,background .15s}.mentor-fab:hover{transform:scale(1.06)}.mentor-widget{position:fixed;right:22px;bottom:90px;z-index:60;width:380px;max-width:calc(100vw - 32px);height:560px;max-height:calc(100vh - 120px);display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:0 12px 40px #141e3c52;overflow:hidden}.mw-head{display:flex;align-items:center;justify-content:space-between;padding:10px 12px;background:var(--primary);color:#fff}.mw-title{font-weight:700;font-size:.98rem}.mw-actions{display:flex;gap:4px}.mw-icon{background:#ffffff29;color:#fff;border:none;width:30px;height:30px;border-radius:8px;cursor:pointer;font-size:.9rem;display:flex;align-items:center;justify-content:center;text-decoration:none}.mw-icon:hover{background:#ffffff4d}.mw-note{padding:8px 12px;font-size:.82rem;background:var(--accent-soft);border-bottom:1px solid var(--border)}.mw-body{flex:1;overflow-y:auto;padding:12px;display:flex;flex-direction:column;gap:10px}.mw-body .msg{max-width:92%;font-size:.9rem;padding:9px 12px}.mw-input{display:flex;gap:6px;padding:10px;border-top:1px solid var(--border);background:var(--surface)}.mw-input textarea{flex:1;resize:none;max-height:90px;padding:9px 11px;border:1px solid var(--border);border-radius:10px;background:var(--bg);color:var(--text);font-family:inherit;font-size:.9rem}.mw-input .btn{padding:8px 12px}@media (max-width: 560px){.mentor-widget{right:8px;left:8px;width:auto;bottom:84px;height:calc(100vh - 110px)}}.map-group{margin-bottom:10px}.map-group-label{font-size:.78rem;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--text-dim);margin-bottom:6px}.map-tabs{display:flex;flex-wrap:wrap;gap:8px}.map-tab{padding:7px 13px;border:1px solid var(--border);background:var(--surface);color:var(--text);border-radius:20px;cursor:pointer;font-size:.86rem}.map-tab:hover{border-color:var(--primary)}.map-tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}.map-viewer{border:1px solid var(--border);border-radius:12px;overflow:hidden;background:var(--bg)}.map-stage{overflow:hidden;touch-action:none;cursor:default}.map-stage.grab{cursor:grab}.map-stage.grab:active{cursor:grabbing}.map-controls{display:flex;align-items:center;gap:6px;padding:8px 10px;border-top:1px solid var(--border);background:var(--surface)}.map-zoom{margin-left:auto;font-size:.82rem;color:var(--text-dim)}.mentor-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:12px}.mentor-head h1{margin-bottom:4px}.msg-tools{margin-top:8px;display:flex;gap:6px}.msg-tools button{border:1px solid var(--border);background:var(--surface-2);color:var(--text-dim);font-size:.74rem;padding:3px 9px;border-radius:7px;cursor:pointer}.msg-tools button:hover{color:var(--text);border-color:var(--primary)}.hl-menu{position:fixed;z-index:70;transform:translate(-50%,-110%)}.hl-menu button,.hl-saved{background:var(--primary);color:#fff;border:none;border-radius:9px;padding:7px 13px;font-size:.85rem;cursor:pointer;white-space:nowrap;box-shadow:0 4px 14px #141e3c4d;display:inline-block}.hl-saved{background:var(--green)}.nb-entry{border:1px solid var(--border);border-radius:10px;padding:12px 14px;margin:12px 0;background:var(--bg)}.nb-entry.highlight{border-left:4px solid var(--accent)}.nb-entry.note{border-left:4px solid var(--primary)}.nb-text{white-space:pre-wrap}.nb-meta{font-size:.78rem;color:var(--text-dim);margin-top:6px;display:flex;align-items:center;gap:6px}.nb-del{margin-left:auto;border:none;background:transparent;color:var(--text-dim);cursor:pointer;font-size:.85rem}.nb-del:hover{color:var(--red)}.nb-add{display:flex;gap:8px;margin-top:16px;align-items:flex-end;flex-wrap:wrap}.nb-add textarea{flex:1;min-width:240px;resize:vertical;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);color:var(--text);font-family:inherit;font-size:.92rem}.map-layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(240px,1fr);gap:16px;align-items:start}.map-insights{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:14px 16px}.map-insights h3{margin:0 0 8px;font-size:1rem;color:var(--primary)}.map-insights ul{margin:0;padding-left:18px}.map-insights li{margin:8px 0;font-size:.88rem;line-height:1.5}@media (max-width: 900px){.map-layout{grid-template-columns:1fr}}.landing-v2{position:relative;overflow-x:hidden;background:#0b1020;color:#e8ebf2;min-height:100vh}.landing-v2 .landing-nav{position:relative;z-index:3}.landing-v2 .brand.light{color:#fff}.aurora{position:absolute;top:0;right:0;bottom:0;left:0;overflow:hidden;z-index:0;pointer-events:none}.aurora .blob{position:absolute;border-radius:50%;filter:blur(90px);opacity:.55;animation:drift 18s ease-in-out infinite alternate}.aurora .b1{width:560px;height:560px;background:#2b4d9e;top:-160px;left:-120px}.aurora .b2{width:480px;height:480px;background:#7a3fbf;top:90px;right:-140px;animation-delay:-6s}.aurora .b3{width:520px;height:520px;background:#0f7a5c;bottom:-220px;left:32%;animation-delay:-12s}@keyframes drift{0%{transform:translate(0) scale(1)}to{transform:translate(70px,46px) scale(1.15)}}@media (prefers-reduced-motion: reduce){.aurora .blob,.mockup-float,.chip{animation:none!important}}.landing-v2 .landing-section,.landing-v2 .landing-hero{position:relative;z-index:1}.hero-v2{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center;padding:60px 40px 70px;max-width:1160px;margin:0 auto}.hero-eyebrow{display:inline-block;padding:6px 14px;border-radius:999px;font-size:.82rem;background:#ffffff14;border:1px solid rgba(255,255,255,.16);margin-bottom:18px}.hero-v2 h1{font-size:2.7rem;line-height:1.15;margin:0 0 16px;color:#fff}.grad-text{background:linear-gradient(92deg,#7aa2e0,#b78cf0 45%,#58c184);-webkit-background-clip:text;background-clip:text;color:transparent}.hero-v2 .lead{color:#e8ebf2bf;font-size:1.08rem;max-width:480px}.cta-glow{background:linear-gradient(92deg,#3b6fd4,#7a3fbf);color:#fff;border:none;font-weight:700;box-shadow:0 0 24px #6556e08c,0 4px 14px #00000059;transition:transform .15s,box-shadow .15s}.cta-glow:hover{transform:translateY(-2px);box-shadow:0 0 36px #6556e0cc,0 6px 18px #0006;background:linear-gradient(92deg,#3b6fd4,#7a3fbf)}.glass-btn{background:#ffffff14;border:1px solid rgba(255,255,255,.2);color:#fff}.glass-btn:hover{background:#ffffff29}.lang-switch.glass{border-color:#ffffff40}.lang-switch.glass button{color:#ffffffbf}.lang-switch.glass button.on{background:#fff3;color:#fff}.hero-stats{display:flex;gap:28px;margin-top:30px;flex-wrap:wrap}.hero-stats>div{display:flex;flex-direction:column}.hero-stats .big{font-size:1.7rem;font-weight:800;color:#fff}.hero-stats span:not(.big){font-size:.8rem;color:#e8ebf299}.hero-3d{perspective:1100px}.mockup-float{position:relative;animation:floaty 6s ease-in-out infinite;transform-style:preserve-3d}@keyframes floaty{0%,to{transform:translateY(0)}50%{transform:translateY(-16px)}}.mockup{transform:rotateY(-14deg) rotateX(7deg);transform-style:preserve-3d;background:linear-gradient(160deg,#171d31,#12172a);border:1px solid rgba(255,255,255,.14);border-radius:18px;box-shadow:30px 40px 80px #0000008c,0 0 0 1px #ffffff0a inset;overflow:hidden}.mk-head{display:flex;align-items:center;gap:6px;padding:10px 14px;border-bottom:1px solid rgba(255,255,255,.09)}.mk-dot{width:10px;height:10px;border-radius:50%;background:#ffffff38}.mk-title{margin-left:8px;font-size:.78rem;color:#fff9;font-weight:700}.mk-body{display:flex;min-height:250px}.mk-side{width:54px;border-right:1px solid rgba(255,255,255,.09);padding:12px 10px;display:flex;flex-direction:column;gap:10px}.mk-nav{height:12px;border-radius:6px;background:#ffffff24}.mk-nav.on{background:#7aa2e0}.mk-main{flex:1;padding:14px 16px}.mk-row{display:flex;gap:10px;margin-bottom:14px}.mk-stat{flex:1;background:#ffffff12;border:1px solid rgba(255,255,255,.1);border-radius:10px;padding:8px 10px;display:flex;flex-direction:column}.mk-stat b{color:#fff;font-size:1.05rem}.mk-stat i{color:#ffffff8c;font-size:.68rem;font-style:normal}.mk-bars{display:flex;align-items:flex-end;gap:8px;height:90px;margin-bottom:14px}.mk-bars div{flex:1;border-radius:6px 6px 2px 2px;background:linear-gradient(180deg,#7aa2e0,#3b6fd4);animation:barGrow 1.4s ease both;transform-origin:bottom}.mk-bars div:nth-child(2n){background:linear-gradient(180deg,#58c184,#1e7a44)}@keyframes barGrow{0%{transform:scaleY(0)}to{transform:scaleY(1)}}.mk-line{height:9px;border-radius:5px;background:#ffffff1f;margin:8px 0}.mk-line.w80{width:80%}.mk-line.w60{width:60%}.mk-line.w70{width:70%}.chip{position:absolute;padding:9px 14px;border-radius:12px;font-size:.82rem;font-weight:700;color:#fff;background:#171d31e6;border:1px solid rgba(255,255,255,.18);box-shadow:0 10px 30px #00000073;animation:floaty 5s ease-in-out infinite}.chip.c1{top:-18px;right:6%;animation-delay:-1s}.chip.c2{bottom:24%;left:-30px;animation-delay:-2.4s}.chip.c3{bottom:-16px;right:12%;animation-delay:-3.2s}.chip.c4{top:32%;right:2px;animation-delay:-4.1s}.tilt{transition:transform .18s ease-out;transform-style:preserve-3d;position:relative}.feature-grid.v2{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(270px,1fr))}.feature-card.v2{background:#ffffff0e;border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:22px;height:100%;background-image:radial-gradient(360px circle at var(--gx, 50%) var(--gy, 50%),rgba(255,255,255,.09),transparent 45%)}.feature-card.v2 h3{color:#fff;margin:10px 0 6px;font-size:1.06rem}.feature-card.v2 p{color:#e8ebf2ad;font-size:.9rem;margin:0}.feature-card.v2 .fi{font-size:1.9rem;filter:drop-shadow(0 4px 10px rgba(0,0,0,.4))}.landing-v2 .sec-title,.landing-v2 .landing-section h2{color:#fff}.landing-v2 .section-sub{color:#e8ebf2a6}.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}.reveal.in{opacity:1;transform:none}.landing-band.v2{background:linear-gradient(92deg,#3b6fd440,#7a3fbf40);border-top:1px solid rgba(255,255,255,.1);border-bottom:1px solid rgba(255,255,255,.1)}.steps.v2 .step p{color:#e8ebf2a8;font-size:.9rem}.steps.v2 .step strong{color:#fff}.steps.v2 .num{background:#ffffff1f;color:#fff}.landing-cta-final.v2{position:relative;z-index:1}.landing-footer.v2{border-top:1px solid rgba(255,255,255,.1);color:#e8ebf28c;position:relative;z-index:1}.landing-footer.v2 a{color:#9db8e8}@media (max-width: 880px){.hero-v2{grid-template-columns:1fr;padding:36px 20px 50px}.hero-v2 h1{font-size:2rem}.hero-3d{margin-top:26px}.chip.c2{left:-6px}.chip.c4{right:-6px}}.syl-section{margin-bottom:22px}.syl-head{display:flex;align-items:center;gap:10px;font-size:1.15rem;padding-bottom:8px;border-bottom:2px solid var(--primary-soft)}.syl-list{list-style:none;padding:0;margin:12px 0 0}.syl-item{padding:12px 14px;border:1px solid var(--border);border-radius:12px;margin-bottom:10px;background:var(--surface)}.syl-text{font-size:.95rem;display:flex;gap:8px;align-items:baseline}.syl-check{color:var(--green);font-weight:800}.syl-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}.syl-chip{font-size:.82rem;padding:5px 11px;border-radius:999px;border:1px solid var(--border);background:var(--surface-2);color:var(--text)}.syl-chip:hover{border-color:var(--primary)}.syl-chip.done{background:var(--green-soft);border-color:var(--green);color:var(--green)}.syl-chip.map{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}.year-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:12px;margin-bottom:8px}.year-card{border:1px solid var(--border);border-radius:12px;padding:16px;text-align:center;background:var(--surface);color:var(--text);transition:transform .12s,border-color .12s}.year-card:hover{transform:translateY(-3px);border-color:var(--primary)}.year-num{font-size:1.6rem;font-weight:800;color:var(--primary)}.year-count{font-size:.82rem;color:var(--text-dim)}.content-col{flex:1;display:flex;flex-direction:column;min-width:0}.sidebar-nav{display:flex;flex-direction:column;gap:3px;overflow-y:auto}.app-header{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:16px;padding:10px 20px;background:var(--surface);border-bottom:1px solid var(--border)}.header-search{position:relative;flex:1;max-width:560px;display:flex;align-items:center}.header-search .hs-icon{position:absolute;left:12px;font-size:.9rem;opacity:.6;pointer-events:none}.header-search input{width:100%;padding:9px 12px 9px 34px;border-radius:10px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:.92rem}.header-search input:focus{outline:none;border-color:var(--primary)}.search-results{position:absolute;top:calc(100% + 6px);left:0;right:0;z-index:50;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 32px #141e3c38;overflow:hidden;max-height:60vh;overflow-y:auto}.search-result{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:10px 14px;border:none;background:transparent;color:var(--text);cursor:pointer}.search-result:hover,.search-result.active{background:var(--surface-2)}.sr-icon{font-size:1.1rem}.sr-text{display:flex;flex-direction:column;min-width:0}.sr-label{font-weight:600;font-size:.9rem}.sr-sub{font-size:.74rem;color:var(--text-dim)}.search-empty{padding:12px 14px;color:var(--text-dim);font-size:.88rem}.header-right{display:flex;align-items:center;gap:12px;margin-left:auto}.header-lang{margin-top:0!important;width:84px}.header-lang button{padding:6px 0;font-size:.82rem}.account-menu{position:relative}.avatar-btn{width:38px;height:38px;border-radius:50%;border:none;cursor:pointer;background:var(--primary);color:#fff;font-weight:800;font-size:.95rem}.avatar-btn:hover{opacity:.9}.account-dropdown{position:absolute;right:0;top:calc(100% + 8px);z-index:50;min-width:200px;background:var(--surface);border:1px solid var(--border);border-radius:12px;box-shadow:0 12px 32px #141e3c38;overflow:hidden;padding:6px}.ad-head{padding:8px 10px 10px;border-bottom:1px solid var(--border);margin-bottom:6px}.ad-name{font-weight:700}.ad-user{font-size:.78rem;color:var(--text-dim)}.ad-item{display:flex;align-items:center;gap:8px;width:100%;text-align:left;padding:9px 10px;border:none;background:transparent;color:var(--text);border-radius:8px;cursor:pointer;font-size:.9rem}.ad-item:hover{background:var(--surface-2)}.nav-group-head{display:flex;align-items:center;gap:10px;width:100%;text-align:left;padding:10px 12px;border:none;background:transparent;color:var(--text);border-radius:10px;cursor:pointer;font-size:.95rem;font-weight:600}.nav-group-head:hover{background:var(--surface-2)}.ng-label{flex:1}.ng-caret{font-size:.7rem;opacity:.6}.nav-group-items{display:flex;flex-direction:column;gap:2px;padding-left:8px;border-left:2px solid var(--border);margin:2px 0 4px 14px}.nav-link.sub{padding:8px 12px;font-size:.9rem}@media (max-width: 820px){.content-col{width:100%}.app-header{padding:8px 12px;gap:10px;flex-wrap:wrap}.header-search{order:2;flex-basis:100%;max-width:none}.header-right{order:1}}.sidebar-credit{font-size:.68rem;color:var(--text-dim);text-align:center;margin-top:8px;line-height:1.5}.sidebar-credit a{color:var(--text-dim);text-decoration:underline}.brand{display:flex;align-items:center}:root{--bg: #f8f9ff;--surface-2: #eef4ff;--ink: #001b4b;--primary: #12306b;--primary-soft: #e9eefa;--accent: #d97b12;--accent-soft: #fff3e2;--cyan: #29a3dc;--border: #dde2ee;--radius: 16px;--shadow: 0 1px 2px rgba(18,48,107,.06);--shadow-2: 0 10px 24px rgba(18,48,107,.09);--shadow-3: 0 20px 40px rgba(18,48,107,.13)}@media (prefers-color-scheme: dark){:root{--bg: #12151d;--surface-2: #232937;--ink: #e8ebf2;--primary-soft: #22304c;--accent-soft: #3a2d18}}body{font-family:Inter,Segoe UI,system-ui,-apple-system,Noto Sans,Noto Sans Devanagari,sans-serif}h1,h2,h3,h4,.brand,.md-h,.mk-title{font-family:Noto Sans,Noto Sans Devanagari,Inter,sans-serif;color:var(--ink)}h1{font-size:2rem;font-weight:800;letter-spacing:-.02em;margin-bottom:6px}.subtitle{font-size:1.02rem}.card{border-radius:var(--radius);box-shadow:var(--shadow);transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease}a.card:hover,.card.hoverable:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--primary-soft)}.btn{border-radius:999px;font-weight:600}.btn.primary{background:var(--primary);border-color:var(--primary);box-shadow:0 6px 16px #12306b2e}.btn.primary:hover{background:var(--ink);opacity:1}.btn:not(.primary):hover{border-color:var(--primary)}.btn.small{border-radius:999px}.field input,.field select,.header-search input,textarea,.nb-add textarea,.mw-input textarea,.chat-input textarea{border-radius:12px;transition:border-color .15s,box-shadow .15s}.field input:focus,.field select:focus,.header-search input:focus,textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px #29a3dc26}.sidebar{width:264px;padding:22px 16px}.brand{font-size:1.05rem}.brand-tag{text-transform:uppercase;letter-spacing:.06em;font-weight:600;font-size:.66rem}.nav-link{border-radius:12px;font-weight:500;position:relative}.nav-link.active{background:var(--primary-soft);color:var(--primary);box-shadow:inset 3px 0 0 var(--accent)}.nav-group-head{border-radius:12px}.nav-group-head.has-active{color:var(--primary)}.sidebar-cta{margin-top:14px}.sidebar-cta .btn{width:100%;justify-content:center}.app-header{background:color-mix(in srgb,var(--surface) 80%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(12px);backdrop-filter:saturate(1.4) blur(12px)}.header-search input{border-radius:999px;background:var(--surface);box-shadow:var(--shadow)}.avatar-btn{box-shadow:0 4px 12px #12306b40}.stat-tiles{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));margin-bottom:22px}.stat-tile{display:flex;align-items:center;gap:14px;padding:18px 20px}.stat-tile .st-badge{width:46px;height:46px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.4rem;flex-shrink:0;background:var(--primary-soft)}.stat-tile.orange .st-badge{background:var(--accent-soft)}.stat-tile.green .st-badge{background:var(--green-soft)}.stat-tile.cyan .st-badge{background:#e2f2fb}.stat-tile .st-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);font-weight:600}.stat-tile .st-value{font-size:1.55rem;font-weight:800;color:var(--ink);font-family:Noto Sans,sans-serif;line-height:1.1}.continue-card{border:1px solid var(--border);border-top:3px solid var(--accent);border-radius:var(--radius);padding:20px 22px;background:var(--surface);box-shadow:var(--shadow);display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:26px}.continue-card .cc-kicker{font-size:.72rem;text-transform:uppercase;letter-spacing:.05em;color:var(--accent);font-weight:700;display:flex;align-items:center;gap:6px}.continue-card h3{margin:6px 0 12px}.cc-bar{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden;max-width:460px}.cc-bar>span{display:block;height:100%;background:var(--accent);border-radius:999px}.section-head{font-family:Noto Sans,sans-serif;font-weight:700;font-size:1.15rem;color:var(--ink);margin:6px 0 14px}.feature-tile{display:block;color:var(--text);padding:20px;border-radius:var(--radius);border:1px solid var(--border);border-top:3px solid var(--tile-accent, var(--primary));background:var(--surface);box-shadow:var(--shadow);transition:transform .16s,box-shadow .16s}.feature-tile:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}.feature-tile .ft-badge{width:46px;height:46px;border-radius:14px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;font-size:1.4rem;margin-bottom:12px}.feature-tile h3{margin:0 0 6px;font-size:1.08rem}.feature-tile p{margin:0;color:var(--text-dim);font-size:.9rem}.subject-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.subject-card{display:block;color:var(--text);border:1px solid var(--border);border-top:3px solid var(--tile-accent, var(--primary));border-radius:var(--radius);padding:20px;background:var(--surface);box-shadow:var(--shadow);transition:transform .16s,box-shadow .16s}.subject-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-2)}.subject-card .sc-icon{width:48px;height:48px;border-radius:14px;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:12px}.subject-card h3{margin:0;font-size:1.12rem}.subject-card .sc-hi{color:var(--text-dim);font-size:.86rem;margin:2px 0 8px}.subject-card .sc-desc{color:var(--text-dim);font-size:.88rem;margin:0 0 14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.subject-card .sc-prog-row{display:flex;justify-content:space-between;font-size:.78rem;color:var(--text-dim);margin-bottom:6px}.subject-card .sc-bar{height:7px;border-radius:999px;background:var(--surface-2);overflow:hidden}.subject-card .sc-bar>span{display:block;height:100%;border-radius:999px;background:var(--tile-accent, var(--primary))}.note-box{border-radius:14px}.takeaways{border-radius:var(--radius)}.mentor-fab{background:radial-gradient(120% 120% at 30% 20%,#1c4a9e 0%,var(--primary) 45%,#0c1f4a 100%);color:#fff;overflow:visible}.mentor-fab:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;border-radius:50%;box-shadow:0 0 #29a3dc80;animation:fabPulse 2.4s ease-out infinite;pointer-events:none}.mentor-fab:hover{transform:scale(1.07)}.mentor-fab.open{background:var(--accent)}.mentor-fab.open:after{animation:none}.fab-close{font-size:1.4rem;line-height:1}@keyframes fabPulse{0%{box-shadow:0 0 #29a3dc73}70%{box-shadow:0 0 0 14px #29a3dc00}to{box-shadow:0 0 #29a3dc00}}@media (prefers-reduced-motion: reduce){.mentor-fab:after{animation:none}}.mw-title{display:inline-flex;align-items:center;gap:7px}.quiz-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-2);padding:24px}.quiz-head{display:flex;align-items:center;gap:16px;margin-bottom:16px;flex-wrap:wrap}.quiz-progress-wrap{flex:1;min-width:160px}.quiz-progress-label{font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;color:var(--text-dim);font-weight:600;margin-bottom:6px}.quiz-progress{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden}.quiz-progress>span{display:block;height:100%;background:var(--accent);border-radius:999px;transition:width .25s}.quiz-count{font-weight:800;color:var(--ink);font-family:Noto Sans,sans-serif}.quiz-score-pill{background:var(--primary-soft);color:var(--primary);font-weight:700;font-size:.82rem;padding:6px 12px;border-radius:999px}.quiz-chips{display:flex;gap:8px;flex-wrap:wrap;margin:6px 0 16px}.quiz-q{margin-top:2px}.chip{font-size:.78rem;font-weight:600;padding:5px 12px;border-radius:999px}.chip-topic{background:#e2f2fb;color:#0b5f8a}.chip-diff{background:var(--surface-2);color:var(--text-dim)}@media (prefers-color-scheme: dark){.chip-topic{background:#14344a;color:#7fd0f0}}.quiz-q{font-family:Noto Sans,Noto Sans Devanagari,sans-serif;font-weight:700;font-size:1.18rem;color:var(--ink);line-height:1.45}.quiz-q-sec{color:var(--text-dim);font-style:italic;border-left:3px solid var(--border);padding-left:12px;margin:8px 0 18px}.quiz-options{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media (max-width: 640px){.quiz-options{grid-template-columns:1fr}}.quiz-opt{display:flex;align-items:flex-start;gap:12px;text-align:left;padding:14px 16px;border:1px solid var(--border);border-radius:14px;background:var(--surface);cursor:pointer;transition:border-color .15s,background .15s,box-shadow .15s}.quiz-opt:hover:not(:disabled){border-color:var(--cyan);box-shadow:0 0 0 3px #29a3dc1a}.quiz-opt:disabled{cursor:default}.opt-letter{width:30px;height:30px;border-radius:50%;background:var(--surface-2);color:var(--text-dim);font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:.9rem}.opt-body{display:flex;flex-direction:column;min-width:0}.opt-main{font-weight:500}.opt-sec{font-size:.82rem;color:var(--text-dim);margin-top:1px}.quiz-opt.correct{border-color:var(--green);background:var(--green-soft)}.quiz-opt.correct .opt-letter{background:var(--green);color:#fff}.quiz-opt.wrong{border-color:var(--red);background:var(--red-soft)}.quiz-opt.wrong .opt-letter{background:var(--red);color:#fff}.quiz-opt.dim{opacity:.55}.explanation.ok{border-left-color:var(--green);background:var(--green-soft)}.explanation.bad{border-left-color:var(--red);background:var(--red-soft)}.quiz-foot{margin-top:16px;display:flex;justify-content:flex-end}.quiz-score-big{font-size:2.2rem;font-weight:800;color:var(--ink);font-family:Noto Sans,sans-serif}.quiz-result-badge{display:inline-block;margin-top:8px;padding:6px 16px;border-radius:999px;font-weight:700}.quiz-result-badge.good{background:var(--green-soft);color:var(--green)}.quiz-result-badge.ok{background:var(--accent-soft);color:var(--accent)}.reader-head{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:8px}.reader-crumb{font-size:.8rem;color:var(--text-dim);margin-bottom:2px}.note-box .note-title{text-transform:uppercase;letter-spacing:.03em}.content-section p,.chapter-intro{font-size:1.05rem;line-height:1.7}.exam{position:fixed;top:0;right:0;bottom:0;left:0;z-index:80;background:var(--bg);display:flex;flex-direction:column}.exam-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--border);flex-wrap:wrap}.exam-title{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink)}.exam-bar-right{display:flex;align-items:center;gap:12px}.exam-timer{font-weight:800;font-variant-numeric:tabular-nums;padding:8px 16px;border-radius:999px;background:var(--primary-soft);color:var(--primary);border:1px solid var(--border)}.exam-timer.low{background:var(--red-soft);color:var(--red);border-color:var(--red);animation:examBlink 1s steps(2) infinite}@keyframes examBlink{50%{opacity:.55}}.exam-body{flex:1;display:grid;grid-template-columns:1fr 320px;min-height:0}.exam-main{padding:26px 32px;overflow-y:auto}.exam-qmeta{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:20px}.exam-qnum{width:40px;height:40px;border-radius:50%;background:var(--primary);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center}.exam-section{font-weight:700;color:var(--ink)}.exam-marks{font-size:.82rem;color:var(--accent);font-weight:600}.exam-lang{margin-left:auto;display:flex;align-items:center;gap:8px;font-size:.85rem;color:var(--text-dim)}.exam-lang select{padding:7px 10px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text)}.exam-q{font-family:Noto Sans,Noto Sans Devanagari,sans-serif;font-weight:700;font-size:1.28rem;color:var(--ink);line-height:1.5}.exam-q-sec{color:var(--text-dim);border-left:3px solid var(--border);padding-left:12px;margin:10px 0 22px}.exam-options{display:flex;flex-direction:column;gap:12px;max-width:900px}.exam-opt{display:flex;align-items:flex-start;gap:14px;text-align:left;padding:16px 18px;border:1px solid var(--border);border-radius:14px;background:var(--surface);cursor:pointer;transition:border-color .15s,background .15s}.exam-opt:hover{border-color:var(--cyan)}.exam-radio{width:20px;height:20px;border-radius:50%;border:2px solid var(--outline, #9aa3b8);flex-shrink:0;margin-top:2px;position:relative}.exam-opt.selected{border-color:var(--primary);background:var(--primary-soft)}.exam-opt.selected .exam-radio{border-color:var(--primary)}.exam-opt.selected .exam-radio:after{content:"";position:absolute;top:3px;right:3px;bottom:3px;left:3px;border-radius:50%;background:var(--primary)}.exam-opt-body{display:flex;flex-direction:column}.exam-opt-main{font-weight:500}.exam-opt-sec{font-size:.84rem;color:var(--text-dim)}.exam-side{border-left:1px solid var(--border);background:var(--surface);padding:18px;overflow-y:auto}.exam-legend{display:grid;grid-template-columns:1fr 1fr;gap:8px 12px;font-size:.78rem;color:var(--text-dim);padding-bottom:14px;border-bottom:1px solid var(--border)}.exam-legend .dot{display:inline-block;width:12px;height:12px;border-radius:4px;margin-right:6px;vertical-align:-1px}.dot.answered{background:var(--green)}.dot.notans{background:#e0736c}.dot.notvis{background:var(--surface-2);border:1px solid var(--border)}.dot.review{background:#7a5bd4}.exam-section-row{display:flex;justify-content:space-between;font-weight:700;color:var(--ink);margin:14px 0 12px;font-size:.9rem}.exam-palette{display:grid;grid-template-columns:repeat(6,1fr);gap:8px}.exam-palette button{aspect-ratio:1;border-radius:8px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-weight:600;font-size:.85rem;cursor:pointer}.exam-palette button.answered{background:var(--green);color:#fff;border-color:var(--green)}.exam-palette button.notans{background:var(--red-soft);color:var(--red);border-color:var(--red-soft)}.exam-palette button.review{background:#ece5fb;color:#5a3fc0;border-color:#d9ccf5}.exam-palette button.current{outline:2px solid var(--primary);outline-offset:1px}.exam-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 20px;background:var(--surface);border-top:1px solid var(--border);flex-wrap:wrap}.exam-foot-left,.exam-foot-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.exam-answered{font-size:.82rem;color:var(--text-dim)}@media (max-width: 860px){.exam-body{grid-template-columns:1fr}.exam-side{border-left:none;border-top:1px solid var(--border);max-height:34vh}}.pyq-kicker{font-size:.8rem;font-weight:700;color:var(--text-dim);display:flex;align-items:center;gap:6px;margin-bottom:2px}.pyq-top{display:grid;grid-template-columns:1.6fr 1fr;gap:18px}@media (max-width: 900px){.pyq-top{grid-template-columns:1fr}}.pyq-card-head{display:flex;align-items:center;gap:8px;font-family:Noto Sans,sans-serif;font-weight:700;font-size:1.05rem;color:var(--ink);margin-bottom:16px}.pyq-bar{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden}.pyq-bar>span{display:block;height:100%;border-radius:999px}.pyq-year-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.pyq-year-card{border:1px solid var(--border);border-radius:14px;padding:16px;background:var(--surface);color:var(--text);transition:transform .12s,border-color .12s,box-shadow .12s}.pyq-year-card:hover{transform:translateY(-2px);border-color:var(--primary);box-shadow:var(--shadow-2)}.pyq-year-card .year-num{font-size:1.5rem;font-weight:800;color:var(--ink);font-family:Noto Sans,sans-serif}.pyq-year-card .year-count{font-size:.8rem;color:var(--text-dim);margin-top:2px}.pyq-pri{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;font-size:.8rem;font-weight:600}.pyq-pri:before{content:"";width:7px;height:7px;border-radius:50%}.pyq-pri.vhigh{background:var(--red-soft);color:var(--red)}.pyq-pri.vhigh:before{background:var(--red)}.pyq-pri.high{background:var(--accent-soft);color:var(--accent)}.pyq-pri.high:before{background:var(--accent)}.pyq-pri.med{background:var(--surface-2);color:var(--text-dim)}.pyq-pri.med:before{background:var(--text-dim)}.lp{--lp-navy1: #0a1f4d;--lp-navy2: #12306b;background:var(--bg);overflow-x:hidden}.lp-nav{display:flex;align-items:center;justify-content:space-between;padding:16px 32px;background:var(--lp-navy1);position:relative;z-index:5}.lp-nav-actions{display:flex;align-items:center;gap:12px}.lp-ghost{background:#ffffff14;border:1px solid rgba(255,255,255,.2);color:#fff}.lp-ghost:hover{background:#ffffff29}.lp-cta{background:var(--accent);border:none;color:#fff;font-weight:700;box-shadow:0 6px 18px #d97b1266}.lp-cta:hover{background:#c56d0c;transform:translateY(-1px)}.lp-cta.lg,.lp-watch.lg{padding:13px 24px;font-size:1rem}.lp .lang-switch.glass{border-color:#ffffff40}.lp .lang-switch.glass button{color:#fffc}.lp .lang-switch.glass button.on{background:#fff3;color:#fff}.lp-hero{position:relative;background:linear-gradient(160deg,var(--lp-navy1),var(--lp-navy2));color:#fff;padding:40px 32px 120px;overflow:hidden}.lp-orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.4;animation:lpDrift 16s ease-in-out infinite alternate}.lp-orb.o1{width:420px;height:420px;background:#2f7fc7;top:-120px;right:8%}.lp-orb.o2{width:360px;height:360px;background:#7a3fbf;bottom:-140px;left:-60px;animation-delay:-8s}.lp-grid-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(255,255,255,.05) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.05) 1px,transparent 1px);background-size:44px 44px;-webkit-mask-image:radial-gradient(circle at 60% 30%,#000,transparent 75%);mask-image:radial-gradient(circle at 60% 30%,#000,transparent 75%)}@keyframes lpDrift{to{transform:translate(40px,30px) scale(1.12)}}.lp-hero-inner{position:relative;z-index:2;max-width:1200px;margin:0 auto;display:grid;grid-template-columns:1.05fr 1fr;gap:40px;align-items:center}.lp-eyebrow{display:inline-block;padding:6px 14px;border-radius:999px;font-size:.82rem;background:#ffffff1a;border:1px solid rgba(255,255,255,.18);margin-bottom:18px}.lp-hero h1{font-family:Noto Sans,sans-serif;font-size:3rem;line-height:1.1;color:#fff;margin:0 0 16px;letter-spacing:-.02em}.lp-grad{background:linear-gradient(92deg,#7fb2f0,#b78cf0 60%,#58c184);-webkit-background-clip:text;background-clip:text;color:transparent}.lp-lead{color:#ffffffc7;font-size:1.1rem;max-width:480px;margin:0 0 26px}.lp-hero-cta{display:flex;gap:14px;flex-wrap:wrap}.lp-watch{background:#ffffff0f;border:1px solid rgba(255,255,255,.22);color:#fff}.lp-watch:hover{background:#ffffff24}.lp-stage{position:relative;transform:perspective(1100px) rotateX(var(--rx,3deg)) rotateY(var(--ry,-10deg));transform-style:preserve-3d;transition:transform .25s ease-out}.lp-mockup{transform-style:preserve-3d;background:linear-gradient(160deg,#fbfcff,#eef2fb);border-radius:18px;box-shadow:28px 40px 80px #00000073;overflow:hidden;border:1px solid rgba(255,255,255,.4)}.lp-mk-head{display:flex;gap:7px;padding:12px 16px;background:#fff;border-bottom:1px solid #e6ebf5}.lp-mk-head span{width:11px;height:11px;border-radius:50%;background:#d5deee}.lp-mk-head span:nth-child(1){background:#ff6058}.lp-mk-head span:nth-child(2){background:#ffbd2e}.lp-mk-head span:nth-child(3){background:#28c840}.lp-mk-body{display:flex;min-height:260px}.lp-mk-side{width:56px;padding:14px 12px;display:flex;flex-direction:column;gap:11px;border-right:1px solid #e6ebf5}.lp-mk-side i{height:12px;border-radius:6px;background:#dbe3f2}.lp-mk-side i.on{background:var(--accent)}.lp-mk-main{flex:1;padding:16px}.lp-mk-row{display:flex;gap:10px;margin-bottom:14px}.lp-mk-stat{flex:1;background:#fff;border:1px solid #e6ebf5;border-radius:12px;padding:10px}.lp-mk-stat b{display:block;color:#12306b;font-size:1.1rem;font-family:Noto Sans,sans-serif}.lp-mk-stat em{font-style:normal;color:#8a94ad;font-size:.68rem}.lp-mk-bars{display:flex;align-items:flex-end;gap:8px;height:96px;margin-bottom:14px}.lp-mk-bars span{flex:1;border-radius:6px 6px 2px 2px;background:linear-gradient(180deg,#7aa2e0,#3b6fd4);animation:lpBar 1.4s ease both;transform-origin:bottom}.lp-mk-bars span:nth-child(2n){background:linear-gradient(180deg,#58c184,#1e7a44)}@keyframes lpBar{0%{transform:scaleY(0)}}.lp-mk-line{height:9px;border-radius:5px;background:#e2e8f4;margin:9px 0}.lp-mk-line.w80{width:80%}.lp-mk-line.w60{width:60%}.lp-mk-line.w70{width:70%}.lp-chip{position:absolute;display:flex;align-items:center;gap:8px;padding:10px 14px;border-radius:14px;background:#fffffff5;box-shadow:0 14px 34px #00000052;font-size:1rem;animation:lpFloat 5s ease-in-out infinite}.lp-chip div{display:flex;flex-direction:column;line-height:1.15}.lp-chip b{font-size:.82rem;color:#12306b}.lp-chip span{font-size:.7rem;color:#8a94ad}.lp-chip.c1{top:4%;right:-6%;animation-delay:-1s}.lp-chip.c2{top:34%;right:-12%;animation-delay:-3.5s}.lp-chip.c3{bottom:16%;left:-12%;animation-delay:-2s}.lp-chip.c4{bottom:-6%;right:14%;animation-delay:-4.2s}@keyframes lpFloat{0%,to{transform:translateZ(50px) translateY(0)}50%{transform:translateZ(50px) translateY(-12px)}}.lp-wave{position:absolute;left:0;right:0;bottom:-1px;line-height:0}.lp-wave svg{width:100%;height:90px;display:block}.lp-stats{max-width:1000px;margin:0 auto;padding:8px 24px 48px;display:grid;grid-template-columns:repeat(4,1fr)}.lp-stat{text-align:center;padding:8px;border-right:1px solid var(--border)}.lp-stat:last-child{border-right:none}.lp-stat-n{font-family:Noto Sans,sans-serif;font-size:2.4rem;font-weight:800;color:var(--ink)}.lp-stat-l{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim);font-weight:600}.lp-features{position:relative;max-width:1160px;margin:0 auto;padding:20px 24px 60px}.lp-features:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(var(--border) 1px,transparent 1px),linear-gradient(90deg,var(--border) 1px,transparent 1px);background-size:40px 40px;opacity:.25;-webkit-mask-image:radial-gradient(circle at 50% 20%,#000,transparent 70%);mask-image:radial-gradient(circle at 50% 20%,#000,transparent 70%);pointer-events:none}.lp-sec-title{text-align:center;font-family:Noto Sans,sans-serif;font-size:2.1rem;color:var(--ink);margin:10px 0 6px}.lp-sec-sub{text-align:center;color:var(--text-dim);max-width:560px;margin:0 auto 34px}.lp-tile-icon{width:48px;height:48px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;background:color-mix(in srgb,var(--tile-accent) 14%,var(--surface));margin-bottom:14px}.lp-big-grid{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;margin-bottom:20px}.lp-big{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:26px;box-shadow:var(--shadow);overflow:hidden}.lp-big h3{margin:0 0 8px;font-size:1.25rem;color:var(--ink)}.lp-big p{color:var(--text-dim);margin:0;max-width:380px}.lp-chat-demo{position:absolute;right:18px;top:20px;width:190px;display:flex;flex-direction:column;gap:10px}.lp-bubble{font-size:.76rem;padding:10px 12px;border-radius:12px;line-height:1.4;box-shadow:var(--shadow)}.lp-bubble.q{background:var(--primary);color:#fff;border-bottom-right-radius:3px;align-self:flex-end}.lp-bubble.a{background:var(--surface-2);color:var(--text);border-bottom-left-radius:3px}.lp-map-art{position:absolute;right:10px;bottom:6px;width:190px;opacity:.9}.lp-card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}.lp-card-inner{background:var(--surface);border:1px solid var(--border);border-top:3px solid var(--tile-accent);border-radius:16px;padding:22px;height:100%;box-shadow:var(--shadow);transition:transform .16s,box-shadow .16s}.lp-card-inner:hover{transform:translateY(-4px);box-shadow:var(--shadow-2)}.lp-card-inner h3{margin:0 0 6px;font-size:1.08rem;color:var(--ink)}.lp-card-inner p{margin:0;color:var(--text-dim);font-size:.9rem}.lp-final{text-align:center;padding:60px 24px 40px}.lp-final h2{font-family:Noto Sans,sans-serif;font-size:1.9rem;color:var(--ink);margin:0 0 8px}.lp-final p{color:var(--text-dim);max-width:480px;margin:0 auto 22px}.lp-footer{text-align:center;padding:26px 24px;border-top:1px solid var(--border);color:var(--text-dim);font-size:.86rem}.lp-footer a{color:var(--primary)}@media (prefers-reduced-motion: reduce){.lp-orb,.lp-chip,.lp-mk-bars span{animation:none!important}}@media (max-width: 900px){.lp-hero-inner{grid-template-columns:1fr}.lp-hero h1{font-size:2.1rem}.lp-stage{margin-top:30px;transform:none}.lp-chip.c2{right:-2%}.lp-chip.c3{left:-2%}.lp-big-grid{grid-template-columns:1fr}.lp-chat-demo,.lp-map-art{position:static;width:auto;margin-top:16px}}.mains-grid{display:grid;grid-template-columns:1.25fr 1fr;gap:18px;align-items:start}@media (max-width: 940px){.mains-grid{grid-template-columns:1fr}}.mains-card-head{font-family:Noto Sans,sans-serif;font-weight:700;font-size:1.05rem;color:var(--primary);margin-bottom:12px}.mains-topcard{border-top:3px solid var(--primary)}.mains-ta{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-family:inherit;font-size:.95rem;resize:vertical}.mains-ta:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px #29a3dc24}.mains-seg{display:inline-flex;border:1px solid var(--border);border-radius:999px;overflow:hidden}.mains-seg button{border:none;background:var(--surface);color:var(--text-dim);padding:6px 14px;font-size:.82rem;cursor:pointer}.mains-seg button.on{background:var(--primary-soft);color:var(--primary);font-weight:600}.mains-eval{border-top:3px solid var(--accent);position:sticky;top:78px}.mains-empty{text-align:center;color:var(--text-dim);padding:30px 10px}.mains-gauge-wrap{text-align:center;margin:8px 0 20px}.mains-gauge{width:150px;height:150px;border-radius:50%;margin:0 auto;display:flex;align-items:center;justify-content:center;background:conic-gradient(var(--accent) calc(var(--p) * 1%),var(--surface-2) 0)}.mains-gauge-in{width:112px;height:112px;border-radius:50%;background:var(--surface);display:flex;flex-direction:column;align-items:center;justify-content:center}.mains-gauge-in b{font-size:2rem;font-weight:800;color:var(--ink);font-family:Noto Sans,sans-serif;line-height:1}.mains-gauge-in span{font-size:.8rem;color:var(--text-dim)}.mains-gauge-label{font-family:Noto Sans,sans-serif;font-weight:700;color:var(--ink);margin-top:12px}.mains-dim{margin-bottom:14px}.mains-dim-row{display:flex;justify-content:space-between;font-size:.9rem;font-weight:600;margin-bottom:5px}.mains-dim-bar{height:8px;border-radius:999px;background:var(--surface-2);overflow:hidden}.mains-dim-bar>span{display:block;height:100%;border-radius:999px}.mains-dim-note{font-size:.82rem;color:var(--text-dim);margin-top:4px}.mains-feedback{border:1px solid var(--border);border-radius:12px;padding:14px;margin-top:16px;background:var(--bg)}.mains-fb-head{font-weight:700;color:var(--ink);margin-bottom:8px}.mains-fb{font-size:.88rem;margin:7px 0;padding-left:4px}.mains-fb.ok{color:var(--green)}.mains-fb.warn{color:var(--accent)}.iv-topmeta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:16px}.iv-pill{padding:6px 12px;border-radius:999px;font-size:.82rem;font-weight:600;background:var(--surface-2);color:var(--text-dim)}.iv-pill.accent{background:var(--accent-soft);color:var(--accent)}.iv-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:18px;align-items:start}@media (max-width: 940px){.iv-grid{grid-template-columns:1fr}}.iv-question{border-top:3px solid var(--primary);margin-bottom:16px}.iv-q-head{display:flex;align-items:center;gap:10px;margin-bottom:12px}.iv-avatar{width:40px;height:40px;border-radius:50%;background:var(--primary-soft);display:flex;align-items:center;justify-content:center;font-size:1.2rem}.iv-q-name{font-weight:700;color:var(--ink);font-family:Noto Sans,sans-serif}.iv-speaking{margin-left:auto;font-size:.76rem;background:var(--primary-soft);color:var(--primary);padding:4px 10px;border-radius:999px;font-weight:600}.iv-q-text{font-size:1.15rem;line-height:1.55;color:var(--ink);font-family:Noto Sans,Noto Sans Devanagari,sans-serif}.iv-mic{text-align:center;padding:28px 20px;margin-bottom:16px}.iv-mic-btn{width:84px;height:84px;border-radius:50%;border:none;cursor:pointer;background:var(--accent);color:#fff;font-size:2rem;box-shadow:0 10px 26px #d97b1266;transition:transform .12s}.iv-mic-btn:hover:not(:disabled){transform:scale(1.05)}.iv-mic-btn.on{animation:ivPulse 1.4s ease-out infinite}@keyframes ivPulse{0%{box-shadow:0 0 #d97b1280}70%{box-shadow:0 0 0 18px #d97b1200}to{box-shadow:0 0 #d97b1200}}.iv-mic-state{font-family:Noto Sans,sans-serif;font-weight:700;font-size:1.15rem;color:var(--ink);margin-top:14px}.iv-mic-hint{color:var(--text-dim);font-size:.88rem;margin-top:2px}.iv-mic-actions{display:flex;justify-content:center;gap:10px;margin-top:18px;flex-wrap:wrap}.iv-transcript-label{font-size:.82rem;font-weight:600;color:var(--text-dim);margin-bottom:6px}.iv-transcript{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit;font-style:italic;resize:vertical}.iv-coach{border-top:3px solid var(--cyan);position:sticky;top:78px}.iv-coach-head{font-family:Noto Sans,sans-serif;font-weight:700;color:var(--cyan);margin-bottom:12px}.iv-coach-stat{display:flex;justify-content:space-between;padding:6px 0;font-size:.9rem}.iv-coach-stat b{color:var(--ink)}.iv-coach-sep{height:1px;background:var(--border);margin:12px 0}.iv-coach-sub{font-weight:700;color:var(--ink);font-size:.9rem;margin-bottom:8px}.iv-history{display:flex;flex-direction:column;gap:8px;max-height:220px;overflow-y:auto}.iv-hist{font-size:.82rem;padding:8px 10px;border-radius:10px;line-height:1.4}.iv-hist.assistant{background:var(--primary-soft);color:var(--text)}.iv-hist.user{background:var(--surface-2);color:var(--text-dim)}.iv-tips{margin:0;padding-left:18px;font-size:.85rem;color:var(--text-dim)}.iv-tips li{margin:5px 0}.rev-grid{display:grid;grid-template-columns:1fr 320px;gap:20px;align-items:start;margin-top:8px}.rev-rail{display:flex;flex-direction:column;gap:16px;position:sticky;top:78px}.rev-queue{padding:18px 20px;margin-bottom:18px}.rev-queue-head{display:flex;justify-content:space-between;align-items:center;font-family:Noto Sans,sans-serif;font-weight:700;color:var(--ink);font-size:1.05rem;margin-bottom:12px}.rev-queue-count{font-size:.85rem;font-weight:600;color:var(--text-dim)}.rev-progress{height:10px;border-radius:999px;background:var(--surface-2);overflow:hidden}.rev-progress span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--accent),#f0a648);transition:width .4s ease}.rev-card{position:relative;background:var(--surface);border:1px solid var(--border);border-top:4px solid var(--ink);border-radius:18px;padding:30px 34px 34px;box-shadow:0 10px 30px #12306b1a;cursor:pointer;transition:transform .18s ease,box-shadow .18s ease;text-align:center}.rev-card:hover{transform:translateY(-2px);box-shadow:0 16px 40px #12306b29}.rev-card.revealed{cursor:default;text-align:left}.rev-card.revealed:hover{transform:none}.rev-card-top{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:20px}.rev-chip{background:var(--primary-soft);color:var(--primary);font-size:.72rem;font-weight:700;letter-spacing:.04em;padding:5px 12px;border-radius:999px}.rev-interval{font-size:.82rem;color:var(--text-dim);font-weight:600;white-space:nowrap}.rev-card-title{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:1.5rem;line-height:1.3;margin:0 0 14px;text-align:center}.rev-card.revealed .rev-card-title{text-align:left;font-size:1.3rem}.rev-card-prompt{color:var(--text-dim);font-size:1rem;line-height:1.6;max-width:560px;margin:0 auto 26px}.rev-tap{color:var(--text-dim);font-size:.9rem;font-weight:600;opacity:.8}.rev-answer{margin:6px 0 0;padding-left:22px}.rev-answer li{margin:9px 0;line-height:1.65}.rev-actions{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}.rev-btn{display:flex;flex-direction:column;align-items:center;gap:3px;padding:14px 8px;border-radius:999px;border:1px solid transparent;font-family:inherit;font-weight:700;cursor:pointer;transition:transform .12s ease,filter .12s ease}.rev-btn:hover{transform:translateY(-2px);filter:brightness(1.03)}.rev-btn-label{font-size:.92rem}.rev-btn-sub{font-size:.72rem;opacity:.75;font-weight:600}.rev-btn-again{background:#fdecec;color:#c0392b}.rev-btn-hard{background:var(--surface-2);color:var(--text-dim)}.rev-btn-good{background:var(--ink);color:#fff}.rev-btn-easy{background:#e6f5ec;color:var(--green)}.rev-hint{color:var(--text-dim);font-size:.85rem;margin-top:14px;text-align:center}.rev-empty{text-align:center;padding:40px 24px}.rev-empty-icon{font-size:2.6rem}.rev-empty h2{font-family:Noto Sans,sans-serif;margin:10px 0 6px;color:var(--ink)}.rev-empty p{color:var(--text-dim);max-width:440px;margin:0 auto 18px}.rev-side{padding:18px 20px}.rev-side-head{font-family:Noto Sans,sans-serif;font-weight:700;color:var(--ink);font-size:1rem;margin-bottom:6px}.rev-side-sub{color:var(--text-dim);font-size:.82rem;margin:0 0 14px}.rev-side-empty{color:var(--text-dim);font-size:.88rem;margin:8px 0 0}.rev-timeline{position:relative;margin-top:12px;padding-left:6px}.rev-timeline:before{content:"";position:absolute;left:12px;top:8px;bottom:8px;width:2px;background:var(--border)}.rev-tl-item{position:relative;display:flex;gap:14px;padding:8px 0;align-items:flex-start}.rev-tl-dot{position:relative;z-index:1;flex:none;width:14px;height:14px;margin-top:3px;border-radius:50%;background:var(--surface-2);border:2px solid var(--border)}.rev-tl-dot.on{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 4px #d97b1226}.rev-tl-day{font-weight:700;color:var(--ink);font-size:.9rem}.rev-tl-day em{font-style:normal;font-weight:600;color:var(--text-dim);font-size:.78rem;margin-left:4px}.rev-tl-sub{color:var(--text-dim);font-size:.8rem;margin-top:1px}.rev-heat{display:grid;grid-template-columns:repeat(7,1fr);gap:5px}.rev-hcell{aspect-ratio:1;border-radius:5px}.rev-hcell.l0,.rev-heat-legend i.l0{background:#eef1f7}.rev-hcell.l1,.rev-heat-legend i.l1{background:#bfe0f5}.rev-hcell.l2,.rev-heat-legend i.l2{background:#5cb6e6}.rev-hcell.l3,.rev-heat-legend i.l3{background:var(--primary)}.rev-heat-legend{display:flex;align-items:center;gap:4px;justify-content:flex-end;margin-top:12px;font-size:.72rem;color:var(--text-dim)}.rev-heat-legend i{width:12px;height:12px;border-radius:3px;display:inline-block}@media (max-width: 900px){.rev-grid{grid-template-columns:1fr}.rev-rail{position:static;flex-direction:column}.rev-actions{grid-template-columns:repeat(2,1fr)}}.acct{max-width:780px}.acct-card{padding:26px 28px;margin-bottom:22px;max-width:none}.acct-head{display:flex;align-items:center;gap:14px}.acct-head h2{margin:0;font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:1.25rem}.acct-badge{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:1.2rem;flex:none}.acct-badge.navy{background:var(--primary-soft)}.acct-badge.orange{background:#fdecd8}.acct-divider{height:1px;background:var(--border);margin:18px 0 22px}.acct-field{margin-bottom:18px}.acct-field label{display:block;font-size:.86rem;font-weight:600;color:var(--ink);margin-bottom:8px}.acct-input{width:100%;padding:13px 16px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit;font-size:.98rem;transition:border-color .15s ease,box-shadow .15s ease}.acct-input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px #29a3dc2e}.acct-input.muted{background:var(--surface-2);color:var(--text-dim);cursor:not-allowed}.acct-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.acct-actions{display:flex;align-items:center;justify-content:flex-end;gap:14px;margin-top:6px;flex-wrap:wrap}.acct-toast{font-size:.88rem;font-weight:600;color:var(--green)}.acct-toast.err{color:#c0392b}.btn.outline{background:var(--surface);border:1px solid var(--border);color:var(--ink)}.btn.outline:hover{border-color:var(--primary);background:var(--primary-soft)}.acct-danger{border:1px solid #f3c7c7;background:#fdf3f3;border-radius:16px;padding:24px 26px}.acct-danger-head{font-family:Noto Sans,sans-serif;font-weight:800;color:#c0392b;font-size:1.2rem;margin-bottom:10px}.acct-danger-text{color:var(--text-dim);font-size:.95rem;line-height:1.6;margin:0 0 18px;max-width:620px}.btn.acct-logout{background:#c0392b;color:#fff;border:none}.btn.acct-logout:hover{background:#a5301f}@media (max-width: 640px){.acct-row{grid-template-columns:1fr}}.set-grid{display:grid;grid-template-columns:1fr 320px;gap:20px;align-items:start}.set-main{margin-bottom:0}.set-sub{color:var(--text-dim);font-size:.88rem;margin-top:3px;font-weight:400}.set-note{display:flex;gap:8px;background:var(--surface-2);border:1px solid var(--border);border-radius:12px;padding:12px 14px;font-size:.82rem;color:var(--text-dim);line-height:1.5;margin-top:10px}.set-key{position:relative}.set-key-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);opacity:.55;pointer-events:none}.set-key .acct-input{padding-left:42px;padding-right:42px}.set-key-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;font-size:1rem;padding:4px}.set-model-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.set-fetch{background:none;border:none;color:var(--cyan);font-weight:600;font-size:.85rem;cursor:pointer;font-family:inherit}.set-fetch:hover{text-decoration:underline}.set-model-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.set-rail{display:flex;flex-direction:column;gap:16px;position:sticky;top:78px}.set-side{margin-bottom:0;padding:22px}.set-side h3{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:1.15rem;margin:14px 0 8px}.set-side-text{color:var(--text-dim);font-size:.88rem;line-height:1.55;margin:0 0 16px}.set-side-label{display:block;font-size:.82rem;font-weight:600;color:var(--ink);margin-bottom:8px}.set-info{background:var(--primary-soft);border-radius:16px;padding:18px 20px}.set-info-head{font-family:Noto Sans,sans-serif;font-weight:700;color:var(--ink);font-size:1rem;margin-bottom:8px}.set-info p{color:var(--text-dim);font-size:.84rem;line-height:1.55;margin:0}@media (max-width: 900px){.set-grid{grid-template-columns:1fr}.set-rail{position:static}}@media (max-width: 560px){.set-model-row{grid-template-columns:1fr}}.nb-top{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;flex-wrap:wrap;margin-bottom:18px}.nb-download{border-radius:999px}.nb-grid{display:grid;grid-template-columns:260px 1fr;gap:20px;align-items:start}.nb-collections{position:sticky;top:78px}.nb-coll-title{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:1.15rem;margin-bottom:14px}.nb-coll{display:flex;width:100%;justify-content:space-between;align-items:center;gap:10px;padding:13px 16px;border:none;background:none;border-left:3px solid transparent;border-radius:10px;cursor:pointer;font-family:inherit;font-size:.95rem;font-weight:600;color:var(--text);text-align:left;transition:background .15s ease}.nb-coll:hover{background:var(--surface-2)}.nb-coll.active{background:var(--surface-2);border-left-color:var(--accent);color:var(--ink)}.nb-coll-badge{background:var(--primary-soft);color:var(--primary);font-size:.76rem;font-weight:700;border-radius:999px;padding:2px 9px}.nb-newcoll{display:block;margin-top:12px;padding:12px 16px;color:var(--primary);font-weight:600;font-size:.9rem;cursor:pointer;position:relative}.nb-newcoll select{position:absolute;top:0;right:0;bottom:0;left:0;opacity:0;cursor:pointer;width:100%}.nb-feed{background:var(--surface);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow-1, 0 6px 20px rgba(18,48,107,.06));display:flex;flex-direction:column;min-height:560px;overflow:hidden}.nb-scroll{flex:1;overflow-y:auto;padding:22px 26px 8px;max-height:640px}.nb-daydiv{display:flex;align-items:center;gap:14px;margin:8px 0 16px}.nb-daydiv:before,.nb-daydiv:after{content:"";flex:1;height:1px;background:var(--border)}.nb-daydiv span{color:var(--text-dim);font-size:.74rem;font-weight:700;letter-spacing:.08em}.nb-card{position:relative;background:var(--surface);border:1px solid var(--border);border-left:4px solid var(--ink);border-radius:12px;padding:16px 18px;margin-bottom:16px;box-shadow:0 2px 10px #12306b0d}.nb-card.highlight{border-left-color:var(--accent)}.nb-card-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:12px}.nb-pill{font-size:.76rem;font-weight:700;padding:5px 12px;border-radius:999px}.nb-pill.note{background:var(--surface-2);color:var(--text-dim)}.nb-pill.highlight{background:#fdecd8;color:var(--accent)}.nb-body{color:var(--text);line-height:1.65;white-space:pre-wrap}.nb-body.quote{font-style:italic;padding-left:14px;border-left:3px solid var(--border);color:var(--ink)}.nb-source{margin-top:12px;font-size:.85rem;color:var(--text-dim)}.nb-del{background:none;border:none;color:var(--text-dim);cursor:pointer;font-size:.85rem;opacity:0;transition:opacity .15s ease;padding:2px 6px;border-radius:6px}.nb-card:hover .nb-del{opacity:.7}.nb-del:hover{opacity:1;background:#fdecec;color:#c0392b}.nb-empty{text-align:center;color:var(--text-dim);padding:70px 20px}.nb-empty p{margin-top:8px}.nb-composer{display:flex;align-items:flex-end;gap:10px;padding:14px 18px;border-top:1px solid var(--border);background:var(--surface)}.nb-composer textarea{flex:1;resize:none;border:1px solid var(--border);border-radius:999px;padding:13px 18px;font-family:inherit;font-size:.95rem;background:var(--surface-2);color:var(--text);max-height:120px;line-height:1.4}.nb-composer textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px #29a3dc26;background:var(--surface)}.nb-send{flex:none;width:46px;height:46px;border-radius:50%;border:none;background:var(--primary);color:#fff;font-size:1.05rem;cursor:pointer;display:grid;place-items:center;transition:background .15s ease}.nb-send:hover:not(:disabled){background:var(--ink)}.nb-send:disabled{opacity:.45;cursor:default}@media (max-width: 860px){.nb-grid{grid-template-columns:1fr}.nb-collections{position:static}}.syl-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:22px}.syl-stat-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:18px 20px;box-shadow:0 4px 14px #12306b0d}.syl-stat-icon{font-size:1.3rem}.syl-stat-num{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:2rem;line-height:1.1;margin-top:10px}.syl-stat-lbl{color:var(--text-dim);font-size:.74rem;font-weight:700;letter-spacing:.06em;margin-top:4px}.syl-stat-card.dark{background:var(--ink);border-color:var(--ink)}.syl-stat-card.dark .syl-stat-num{color:#fff}.syl-stat-card.dark .syl-stat-lbl{color:#ffffffb3}.syl-stat-card.dark .syl-stat-icon{filter:saturate(1.4)}.syl-acc-list{display:flex;flex-direction:column;gap:14px}.syl-acc{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:0 3px 12px #12306b0a;overflow:hidden}.syl-acc-head{display:flex;align-items:center;gap:16px;width:100%;padding:18px 22px;background:none;border:none;cursor:pointer;font-family:inherit;text-align:left}.syl-badge{width:44px;height:44px;border-radius:12px;background:var(--primary-soft);display:grid;place-items:center;font-size:1.15rem;flex:none}.syl-acc-title{flex:1;font-family:Noto Sans,sans-serif;font-weight:700;color:var(--ink);font-size:1.15rem}.syl-acc-chev{color:var(--text-dim);font-size:1.3rem;transition:transform .2s ease}.syl-acc.open .syl-acc-chev{transform:rotate(180deg)}.syl-acc-body{padding:4px 22px 20px;border-top:1px solid var(--border)}.syl-row{padding:16px 0;border-bottom:1px solid var(--border)}.syl-row:last-child{border-bottom:none}.syl-row-text{font-weight:600;color:var(--ink);margin-bottom:8px;display:flex;align-items:center;gap:8px}.syl-check{display:inline-grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--green);color:#fff;font-size:.72rem;flex:none}.syl-links{display:flex;flex-wrap:wrap;gap:8px}.syl-chip{display:inline-flex;align-items:center;gap:5px;padding:6px 12px;border-radius:999px;background:var(--surface-2);color:var(--primary);font-size:.82rem;font-weight:600;text-decoration:none;border:1px solid var(--border);transition:background .15s ease}.syl-chip:hover{background:var(--primary-soft)}.syl-chip.done{background:#e6f5ec;color:var(--green);border-color:transparent}.syl-chip.map{color:var(--accent)}@media (max-width: 760px){.syl-stats{grid-template-columns:repeat(2,1fr)}}.tp-kicker{color:var(--text-dim);font-weight:600;font-size:.9rem;margin-bottom:6px}.tp-hero{font-family:Noto Sans,sans-serif;font-weight:800;font-size:2.6rem;color:var(--ink);line-height:1.1;margin:0 0 10px}.tp-grid{display:grid;grid-template-columns:1fr 320px;gap:20px;align-items:start;margin:22px 0 30px}.tp-params{padding:24px 26px;margin:0;background:linear-gradient(180deg,var(--surface),var(--surface-2))}.tp-card-head{font-family:Noto Sans,sans-serif;font-weight:700;color:var(--accent);font-size:1.15rem;margin-bottom:18px}.tp-two{display:grid;grid-template-columns:1fr 1fr;gap:16px}.tp-stepper{display:flex;align-items:center;justify-content:space-between;border:1px solid var(--border);border-radius:12px;background:var(--surface);padding:4px}.tp-stepper button{width:40px;height:40px;border:none;background:var(--surface-2);border-radius:9px;font-size:1.2rem;cursor:pointer;color:var(--ink)}.tp-stepper button:hover{background:var(--primary-soft)}.tp-stepper span{font-family:Noto Sans,sans-serif;font-weight:800;font-size:1.35rem;color:var(--ink)}.tp-divider{height:1px;background:var(--border);margin:20px 0 16px}.tp-check{display:flex;align-items:center;gap:10px;padding:8px 0;font-weight:500;color:var(--text);cursor:pointer}.tp-check input{width:18px;height:18px;accent-color:var(--ink)}.tp-synth{padding:24px 26px;margin:0;border-top:4px solid var(--cyan);position:sticky;top:78px}.tp-synth-head{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:1.3rem;margin-bottom:10px}.tp-synth-text{color:var(--text-dim);font-size:.9rem;line-height:1.55;margin:0 0 18px}.tp-summary{background:var(--primary-soft);border-radius:12px;padding:14px 16px;margin-bottom:18px}.tp-summary div{display:flex;justify-content:space-between;align-items:center;padding:5px 0;font-size:.9rem;color:var(--text-dim)}.tp-summary b{color:var(--ink);font-size:1rem}.tp-gen{width:100%;justify-content:center}.tp-lib-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.tp-lib-head h2{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);margin:0}.tp-lib{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}.tp-lib-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;box-shadow:0 4px 14px #12306b0d;transition:transform .15s ease,box-shadow .15s ease}.tp-lib-card:hover{transform:translateY(-2px);box-shadow:0 12px 30px #12306b1f}.tp-tag{display:inline-block;font-size:.68rem;font-weight:700;letter-spacing:.05em;padding:5px 10px;border-radius:999px;margin-bottom:14px}.tp-tag.prelims{background:#fdecd8;color:var(--accent)}.tp-tag.subject{background:#e2f2fb;color:var(--cyan)}.tp-lib-title{font-family:Noto Sans,sans-serif;font-weight:700;color:var(--ink);font-size:1.15rem;line-height:1.3;margin-bottom:12px;min-height:2.6em}.tp-lib-meta{color:var(--text-dim);font-size:.85rem;margin-bottom:16px}.btn.tp-start{width:100%;justify-content:center;background:var(--surface-2);color:var(--ink);border:1px solid var(--border)}.btn.tp-start:hover{background:var(--primary-soft);border-color:var(--primary)}@media (max-width: 900px){.tp-grid{grid-template-columns:1fr}.tp-synth{position:static}.tp-hero{font-size:2rem}}.qb-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;flex-wrap:wrap;margin-bottom:20px}.qb-kicker{color:var(--text-dim);font-weight:700;font-size:.85rem;letter-spacing:.05em;margin-bottom:4px}.qb-hero{font-family:Noto Sans,sans-serif;font-weight:800;font-size:2.4rem;color:var(--ink);margin:0;line-height:1.1}.qb-token{min-width:260px}.qb-token label{display:block;font-size:.8rem;font-weight:600;color:var(--text-dim);margin-bottom:6px}.qb-token-row{position:relative}.qb-token-row input{width:100%;padding:11px 40px 11px 14px;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit}.qb-token-row input:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px #29a3dc26}.qb-eye{position:absolute;right:8px;top:50%;transform:translateY(-50%);background:none;border:none;cursor:pointer;padding:4px}.qb-tabs{display:flex;gap:6px;border-bottom:1px solid var(--border);margin-bottom:22px;flex-wrap:wrap}.qb-tab{display:inline-flex;align-items:center;gap:8px;padding:12px 18px;background:none;border:none;border-bottom:3px solid transparent;margin-bottom:-1px;cursor:pointer;font-family:inherit;font-weight:600;font-size:.95rem;color:var(--text-dim)}.qb-tab.active{color:var(--ink);border-bottom-color:var(--ink)}.qb-tab-ico{opacity:.8}.qb-tab-badge{background:#c0392b;color:#fff;font-size:.7rem;font-weight:700;border-radius:999px;padding:1px 7px}.qb-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.qb-input,.qb-preview{margin:0;padding:22px 24px;background:var(--surface-2)}.qb-two{display:grid;grid-template-columns:1fr 1fr;gap:14px}.qb-raw{width:100%;min-height:300px;padding:14px;border-radius:12px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:.86rem;line-height:1.6;resize:vertical}.qb-raw.mono{min-height:220px}.qb-raw:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px #29a3dc26}.qb-input-foot{display:flex;justify-content:flex-end;margin-top:14px}.qb-preview{display:flex;flex-direction:column}.qb-preview-head{display:flex;justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:16px}.qb-preview-title{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:1.25rem}.qb-preview-sub{color:var(--text-dim);font-size:.85rem;margin-top:3px}.qb-draft{background:#fdecd8;color:var(--accent);font-size:.76rem;font-weight:700;padding:5px 12px;border-radius:999px;white-space:nowrap}.qb-preview-body{flex:1}.qb-preview-empty{text-align:center;color:var(--text-dim);padding:60px 20px}.qb-preview-empty p{margin-top:8px}.qb-preview-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;border-top:1px solid var(--border);padding-top:16px;margin-top:8px;flex-wrap:wrap}.qb-panel{margin:0}.qb-q{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:16px 18px;margin-bottom:14px}.qb-q.warn{border-color:var(--accent);border-left:4px solid var(--accent)}.qb-q-meta{font-size:.76rem;color:var(--text-dim);margin-bottom:6px}.qb-q-top{display:flex;align-items:center;gap:10px;margin-bottom:10px}.qb-q-num{font-weight:800;color:var(--ink)}.qb-q-warn{color:var(--accent);font-size:.8rem;font-weight:600}.qb-q-del{margin-left:auto;background:#fdecec;color:#c0392b;border:none;border-radius:8px;padding:5px 9px;cursor:pointer;font-size:.8rem}.qb-q-del:hover{background:#f8d3d3}.qb-q-text{font-weight:600;color:var(--ink);margin:0 0 12px;line-height:1.5}.qb-opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}.qb-opt{display:flex;align-items:center;gap:10px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:.9rem}.qb-opt.correct{background:var(--surface);border-color:var(--green);box-shadow:inset 0 0 0 1px var(--green)}.qb-opt-letter{width:24px;height:24px;border-radius:6px;background:var(--surface);border:1px solid var(--border);display:grid;place-items:center;font-weight:700;font-size:.78rem;color:var(--text-dim);flex:none}.qb-opt.correct .qb-opt-letter{background:var(--green);color:#fff;border-color:var(--green)}.qb-opt-text{flex:1}.qb-opt-check{color:var(--green);font-weight:700}.qb-q-actions{display:flex;gap:8px;margin-top:10px}@media (max-width: 900px){.qb-grid{grid-template-columns:1fr}}@media (max-width: 520px){.qb-opts,.qb-two{grid-template-columns:1fr}}.mp-grid{display:grid;grid-template-columns:260px 1fr 320px;gap:18px;align-items:start}.mp-rail{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px;position:sticky;top:78px}.mp-filter{width:100%;padding:11px 14px;border-radius:10px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);font-family:inherit;font-size:.9rem;margin-bottom:16px}.mp-filter:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px #29a3dc26}.mp-rail-group{margin-bottom:14px}.mp-rail-label{font-size:.72rem;font-weight:700;letter-spacing:.06em;color:var(--text-dim);margin:0 0 6px 6px}.mp-rail-item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 12px;border:none;background:none;border-left:3px solid transparent;border-radius:9px;cursor:pointer;font-family:inherit;font-size:.92rem;font-weight:500;color:var(--text);text-align:left}.mp-rail-item:hover{background:var(--surface-2)}.mp-rail-item.active{background:var(--surface-2);border-left-color:var(--accent);color:var(--ink);font-weight:600}.mp-rail-ico{flex:none;width:20px;text-align:center}.mp-rail-name{flex:1}.mp-rail-dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none}.mp-mymaps{border-top:1px solid var(--border);padding-top:12px}.mp-add{display:block;width:100%;margin-top:8px;padding:11px;border:1px dashed var(--border);border-radius:10px;background:none;color:var(--primary);font-weight:600;font-family:inherit;cursor:pointer;font-size:.9rem}.mp-add:hover{background:var(--primary-soft);border-color:var(--primary)}.mp-stage{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:16px;min-height:560px}.mp-title-chip{position:absolute;top:26px;left:50%;transform:translate(-50%);z-index:3;background:var(--surface);border:1px solid var(--border);box-shadow:0 4px 14px #12306b1f;border-radius:12px;padding:10px 22px;font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:1.4rem}.mp-delete{position:absolute;bottom:24px;right:24px;z-index:3}.mp-exam{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:20px;position:sticky;top:78px}.mp-exam-head{display:flex;align-items:center;gap:12px;padding-bottom:14px;border-bottom:1px solid var(--border);margin-bottom:16px}.mp-exam-ico{width:40px;height:40px;border-radius:50%;background:#fdecd8;display:grid;place-items:center;font-size:1.1rem;flex:none}.mp-exam-title{font-family:Noto Sans,sans-serif;font-weight:800;color:var(--ink);font-size:1.25rem}.mp-exam-sub{color:var(--text-dim);font-size:.82rem}.mp-note{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:14px 16px;margin-bottom:14px;box-shadow:0 2px 8px #12306b0a}.mp-note-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.mp-note-tag{font-size:.68rem;font-weight:700;letter-spacing:.04em;padding:4px 9px;border-radius:6px}.mp-note-tag.hy{background:#fdecec;color:#c0392b}.mp-note-tag.geo{background:#e2f2fb;color:var(--cyan)}.mp-note-bm{color:var(--text-dim);font-size:.85rem}.mp-note-body{color:var(--text);font-size:.9rem;line-height:1.6}.mp-exam-empty{color:var(--text-dim);font-size:.9rem;line-height:1.6}.mp-exam-foot{margin-top:12px}@media (max-width: 1100px){.mp-grid{grid-template-columns:240px 1fr}.mp-exam{grid-column:1 / -1;position:static}}@media (max-width: 720px){.mp-grid{grid-template-columns:1fr}.mp-rail,.mp-exam{position:static}.mp-title-chip{font-size:1.1rem;padding:8px 16px}}