:root{--bg:#f0f4f8;--bg-primary:#f8fafc;--bg-card:#ffffff;--bg-subtle:#f1f5f9;--bg-hover:#e2e8f0;--text:#1a1a1a;--text-primary:#0f172a;--text-secondary:#475569;--text-tertiary:#94a3b8;--primary:#6366f1;--primary-dark:#4f46e5;--primary-hover:#4338ca;--primary-subtle:rgba(99,102,241,0.1);--border-subtle:rgba(0,0,0,0.06);--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow-md:0 4px 12px rgba(0,0,0,0.08);--shadow-lg:0 8px 24px rgba(0,0,0,0.12);--glass-bg:rgba(255,255,255,0.2);--glass-bg-dark:rgba(0,0,0,0.3);--font-sans:"Pretendard",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;--font-mono:"JetBrains Mono","Fira Code",monospace}@media (prefers-color-scheme:dark){:root{--bg:#0f172a;--bg-primary:#0f172a;--bg-card:#1e293b;--bg-subtle:#334155;--bg-hover:#475569;--text:#e0e0e0;--text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-tertiary:#64748b;--border-subtle:rgba(255,255,255,0.08);--shadow-sm:0 1px 2px rgba(0,0,0,0.2);--shadow-md:0 4px 12px rgba(0,0,0,0.3);--shadow-lg:0 8px 24px rgba(0,0,0,0.4)}}@supports (padding:env(safe-area-inset-top)){html{padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}}html{scroll-behavior:smooth;-webkit-tap-highlight-color:transparent}.no-select{-webkit-user-select:none;user-select:none}*,:after,:before{box-sizing:border-box}body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:var(--font-sans);line-height:1.5}.glass{background:var(--glass-bg);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-radius:12px;border:1px solid rgba(255,255,255,.18);padding:1rem}@media (prefers-color-scheme:dark){.glass{background:var(--glass-bg-dark);border:1px solid rgba(255,255,255,.12)}}.button{display:inline-block;padding:.75rem 1.5rem;font-size:1rem;font-weight:600;color:#fff;background:var(--primary);border:none;border-radius:8px;cursor:pointer;transition:background .3s ease,transform .2s ease}.button:hover{background:var(--primary-hover);transform:translateY(-2px)}.button:active{transform:translateY(0)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.fade-in{animation:fadeIn .6s ease-out forwards}.section{padding:4rem 0;display:flex;flex-direction:column;align-items:center;text-align:center}.max-w-4xl{max-width:56rem;width:100%}.grid{display:grid;gap:2rem}.grid-cols-1{grid-template-columns:repeat(1,minmax(0,1fr))}.grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}@media (min-width:768px){.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.md\:text-left{text-align:left}.md\:flex-row{flex-direction:row}.md\:items-start{align-items:flex-start}}.text-4xl{font-size:2.5rem;line-height:1.2}.text-2xl{font-size:1.5rem;line-height:1.4}.text-xl{font-size:1.25rem;line-height:1.5}.text-lg{font-size:1.125rem;line-height:1.6}.font-bold{font-weight:700}.font-semibold{font-weight:600}.text-gray{color:#666}.dark .text-gray{color:#aaa}.mb-4{margin-bottom:1rem}.mb-6{margin-bottom:1.5rem}.mb-8{margin-bottom:2rem}.mb-12{margin-bottom:3rem}.gap-4{gap:1rem}.flex{display:flex}.justify-center{justify-content:center}.items-center{align-items:center}.flex-col{flex-direction:column}.card{background:rgba(255,255,255,.5);border:1px solid rgba(0,0,0,.05);border-radius:12px;padding:1.5rem;transition:transform .2s}.dark .card{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1)}.card:hover{transform:translateY(-2px)}.bullet-list{list-style:none;padding:0;text-align:left;display:inline-block}.bullet-list li{margin-bottom:.75rem;padding-left:1.5rem;position:relative}.bullet-list li:before{content:"✔️";position:absolute;left:0}.secondary-button{background:transparent;color:var(--text);border:1px solid var(--text)}.secondary-button:hover{background:rgba(125,125,125,.1)}