:root{--bg-primary: #faf8f5;--bg-secondary: #f3efe8;--bg-card: #ffffff;--bg-accent: #fdf6ec;--bg-dark: #1a1612;--amber: #d97706;--amber-light: #f59e0b;--amber-glow: rgba(217, 119, 6, .12);--amber-soft: #fef3c7;--navy: #1e293b;--navy-light: #334155;--sage: #6b8f71;--sage-light: #a3c4a8;--sage-glow: rgba(107, 143, 113, .1);--terracotta: #c2714f;--terracotta-glow: rgba(194, 113, 79, .1);--text-primary: #1a1612;--text-secondary: #5c544a;--text-dim: #9c9488;--text-light: #b8b0a4;--border-warm: #e8e0d4;--border-light: #f0ebe3;--border-accent: rgba(217, 119, 6, .2);--font-serif: "Instrument Serif", Georgia, "Times New Roman", serif;--font-sans: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--max-width: 1100px;--nav-height: 72px;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-xl: 28px;--shadow-sm: 0 1px 3px rgba(26, 22, 18, .04);--shadow-md: 0 4px 16px rgba(26, 22, 18, .06);--shadow-lg: 0 12px 40px rgba(26, 22, 18, .08);--shadow-xl: 0 20px 60px rgba(26, 22, 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36px;background:transparent;color:var(--text-primary);border:1.5px solid var(--border-warm);border-radius:var(--radius-md);font-family:var(--font-sans);font-size:.98rem;font-weight:600;cursor:pointer;transition:all var(--transition-base);text-decoration:none}.btn-secondary:hover{border-color:var(--amber);color:var(--amber);transform:translateY(-2px)}.section-divider{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}.section-divider .divider-line{width:100%;height:1px;background:linear-gradient(90deg,transparent,var(--border-warm),transparent)}@media(max-width:768px){.section{padding:80px 20px}}[data-theme=dark]{--bg-primary: #141210;--bg-secondary: #1c1a17;--bg-card: #211f1b;--bg-accent: #2a2620;--bg-dark: #0c0b09;--amber: #f59e0b;--amber-light: #fbbf24;--amber-glow: rgba(245, 158, 11, .15);--amber-soft: rgba(245, 158, 11, .08);--sage: #86efac;--sage-light: #a3c4a8;--sage-glow: rgba(134, 239, 172, .08);--terracotta: #e8956f;--terracotta-glow: rgba(232, 149, 111, 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var(--border-warm);border-radius:100px;font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:2.5px;color:var(--amber)}.boot-tool-name{font-family:var(--font-serif);font-size:clamp(2rem,6vw,3.5rem);font-weight:400;color:var(--text-primary);line-height:1.2;animation:fadeInUp .4s ease both}.boot-line{width:0;height:1.5px;background:var(--amber);animation:boot-line-expand .45s .2s ease-out forwards}@keyframes boot-line-expand{0%{width:0;opacity:.5}to{width:120px;opacity:1}}.boot-label{font-size:.8rem;font-weight:500;letter-spacing:1px;color:var(--text-dim);text-transform:lowercase}.boot-dots{display:flex;gap:8px;align-items:center}.boot-dot{width:6px;height:6px;border-radius:50%;background:var(--amber);opacity:.5;animation:boot-dot-pulse .9s ease-in-out infinite}@keyframes 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var(--transition-fast);white-space:nowrap}.tool-view-back:hover{border-color:var(--amber);color:var(--amber)}.tool-view-title{font-family:var(--font-serif);font-size:1rem;color:var(--text-secondary);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.tool-view-spacer{flex:1}.tool-view-content{padding:24px 24px 48px}@keyframes fade-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fade-in .3s ease both}[data-theme=dark]{.glass-card{background:#211f1ba6;border-color:#ffffff0f;box-shadow:0 4px 24px #0003}.glass-card--math:hover{box-shadow:0 16px 48px #f59e0b26,0 4px 8px #f59e0b14}.glass-card--physics:hover{box-shadow:0 16px 48px #86efac1f,0 4px 8px #86efac12}.glass-card--cs:hover{box-shadow:0 16px 48px #e8956f21,0 4px 8px 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.period{font-size:.95rem;color:var(--text-dim)}.pricing-note{font-size:.88rem;color:var(--text-dim);margin-bottom:28px}.pricing-features{list-style:none;display:flex;flex-direction:column;gap:14px;margin-bottom:32px}.pricing-features li{font-size:.92rem;color:var(--text-secondary);display:flex;align-items:center;gap:10px}.pricing-card:not(.pricing-card--featured) .check{color:var(--sage)}.pricing-card--featured .check{color:var(--amber)}.pricing-card .btn-primary,.pricing-card .btn-secondary{width:100%;text-align:center}@media(max-width:768px){.pricing-grid{grid-template-columns:1fr}}[data-theme=dark]{.pricing-badge{background:var(--amber);color:var(--bg-primary)}}.final-cta{position:relative;z-index:1;padding:80px 24px 120px;text-align:center}.final-cta-card{max-width:720px;margin:0 auto;padding:72px 48px;background:var(--navy);border-radius:var(--radius-xl);position:relative;overflow:hidden;box-shadow:0 24px 60px 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