:root{--primary-50: #eff6ff;--primary-100: #dbeafe;--primary-200: #bfdbfe;--primary-300: #93c5fd;--primary-400: #60a5fa;--primary-500: #3b82f6;--primary-600: #2563eb;--primary-700: #1d4ed8;--primary-800: #1e40af;--primary-900: #1e3a8a;--secondary-50: #f8fafc;--secondary-100: #f1f5f9;--secondary-200: #e2e8f0;--secondary-300: #cbd5e1;--secondary-400: #94a3b8;--secondary-500: #64748b;--secondary-600: #475569;--secondary-700: #334155;--secondary-800: #1e293b;--secondary-900: #0f172a;--accent-500: #d946ef;--success-500: #10b981;--warning-500: #f59e0b;--error-500: #ef4444;--radius-md: .75rem;--radius-lg: 1rem;--radius-xl: 1.5rem;--shadow-sm: 0 2px 4px rgba(15, 23, 42, .06);--shadow-md: 0 10px 20px rgba(15, 23, 42, .1);--shadow-lg: 0 20px 45px rgba(15, 23, 42, .15);--font-display: "Playfair Display", serif;--font-emphasis: "DM Serif Display", serif;--font-body: "DM Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--body-bg: #f4fbff;--surface-bg: rgba(255, 255, 255, .82);--surface-border: rgba(148, 163, 184, .18);--text-color: rgba(15, 60, 82, .86);--muted-text: rgba(71, 85, 105, .7);--accent-start: #0ea5e9;--accent-end: #0f766e;--tag-bg: rgba(13, 148, 136, .12);--tag-text: rgba(13, 109, 107, .92)}html[data-theme=dark]{--body-bg: #071522;--surface-bg: rgba(12, 26, 41, .85);--surface-border: rgba(148, 163, 184, .1);--text-color: rgba(226, 242, 254, .92);--muted-text: rgba(148, 185, 209, .7);--accent-start: #38bdf8;--accent-end: #22d3ee;--tag-bg: rgba(34, 211, 238, .15);--tag-text: rgba(186, 230, 253, 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ease}.header-menu:hover{transform:translateY(-1px);box-shadow:0 14px 28px #0f172a26}.header-menu__icon{display:inline-flex;flex-direction:column;gap:.28rem}.header-menu__icon span{width:20px;height:2px;border-radius:999px;background:var(--text-color);transition:transform .16s ease,opacity .16s ease}.header-menu[aria-expanded=true] .header-menu__icon span:nth-child(1){transform:translateY(6px) rotate(45deg)}.header-menu[aria-expanded=true] .header-menu__icon span:nth-child(2){opacity:0}.header-menu[aria-expanded=true] .header-menu__icon span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}.header-drawer{display:none}.header-drawer__nav{display:flex;flex-direction:column;gap:1.4rem}.header-drawer__link{font-size:1.05rem;font-weight:600;color:var(--text-color)}.header-drawer__link:hover,.header-drawer__link:focus-visible{color:var(--accent-end)}.header-drawer__backdrop{display:none}.theme-toggle{border:1px solid 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3rem}.section__title{font-size:clamp(2rem,4vw,3rem);margin-bottom:.75rem;color:var(--text-color)}.section__subtitle{color:var(--muted-text);font-size:1.05rem}.muted-callout{background:#ecfcf599;border:1px solid rgba(16,185,129,.2);border-radius:var(--radius-lg);padding:1rem 1.2rem;color:var(--muted-text);font-size:.95rem}.card-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:1.75rem}.contact-form{display:flex;flex-direction:column;gap:1.2rem}.form-row{display:flex;flex-wrap:wrap;gap:1rem}.form-row label{flex:1}.contact-form label{display:flex;flex-direction:column;gap:.4rem;color:var(--muted-text);font-weight:500}.contact-form input,.contact-form textarea{padding:.7rem .9rem;border-radius:.9rem;border:1px solid rgba(148,163,184,.35);background:#ffffffe6;color:var(--text-color)}.contact-form input:focus-visible,.contact-form textarea:focus-visible{outline:2px solid 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.hero-copy{background:#060f1edb;border-color:#1e40ff40;box-shadow:0 40px 80px #0206178c}html[data-theme=dark] .section__title{color:var(--text-color)}html[data-theme=dark] .section__subtitle{color:var(--muted-text)}html[data-theme=dark] .card{background:#091723db;border-color:#3b82f61f;box-shadow:0 24px 50px #02061766}html[data-theme=dark] .card:hover{border-color:#38bdf840}html[data-theme=dark] .app-preview{background:#091723e6;border-color:#3b82f62e}html[data-theme=dark] .button--secondary{background:#0c1a29d9;border-color:#3b82f640;color:#bae6fdf2}html[data-theme=dark] .contact-form input,html[data-theme=dark] .contact-form textarea,html[data-theme=dark] .scholar-controls input{background:#08121ed9;border-color:#3b82f633;color:#e2f2feeb}