:root{--color-primary:#1a73e8;--color-secondary:#0b3d91;--color-background:#f5f7fb;--color-text:#111827;--color-muted:#6b7280;--color-border:#e5e7eb;--container-width:1080px}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:var(--font-noto-sans),"Noto Sans KR",sans-serif;color:var(--color-text);background-color:#fff;line-height:1.6}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.container{width:min(100% - 3rem,var(--container-width));margin:0 auto}.section-tag{display:inline-block;font-size:.85rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--color-primary);margin-bottom:1.5rem}.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:10;background:hsla(0,0%,100%,.94);border-bottom:1px solid var(--color-border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.site-header .container{display:flex;align-items:center;justify-content:space-between;padding:1rem 0}.brand{font-weight:900;font-size:1.25rem}.main-nav{display:flex;gap:1rem;align-items:center;font-weight:500}.main-nav a{padding:.35rem .75rem;border-radius:999px;transition:background-color .2s ease,color .2s ease}.main-nav a:hover{background-color:rgba(26,115,232,.12);color:var(--color-primary)}.button{display:inline-flex;align-items:center;justify-content:center;gap:.35rem;padding:.65rem 1.4rem;border-radius:999px;font-weight:600;transition:transform .2s ease,box-shadow .2s ease,background-color .2s ease}.button.primary{background-color:var(--color-primary);color:#fff;box-shadow:0 14px 28px rgba(26,115,232,.25)}.button.primary:hover{transform:translateY(-1px);box-shadow:0 18px 36px rgba(26,115,232,.3)}.button.secondary{border:1px solid rgba(17,24,39,.15);color:var(--color-text);background-color:#fff}.button.secondary:hover{background-color:rgba(26,115,232,.08);color:var(--color-primary)}.button.ghost{border:1px solid rgba(17,24,39,.1)}.hero{padding:clamp(4rem,8vw,7rem) 0;text-align:center;background:linear-gradient(180deg,#fff,#eef3ff)}.hero h1{font-size:clamp(2rem,4vw,3rem);margin:1rem 0;line-height:1.2}.hero .lead{color:var(--color-muted);font-size:1.05rem;margin-bottom:2rem}.hero-actions{display:inline-flex;gap:1rem;flex-wrap:wrap;justify-content:center}.media-gallery{padding:4rem 0 3rem;background-color:#fff}.gallery-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:1rem;gap:1rem}.gallery-item{aspect-ratio:3/2;border-radius:16px;background-position:50%;background-size:cover;box-shadow:0 10px 30px rgba(15,23,42,.15)}.partners{padding:3rem 0;background-color:var(--color-background)}.logo-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));grid-gap:1rem;gap:1rem;text-align:center;font-weight:600;color:var(--color-muted)}.logo-grid span{padding:1rem;background:#fff;border-radius:12px;border:1px solid var(--color-border)}.testimonial{padding:4rem 0}.testimonial blockquote{max-width:720px;margin:0 auto;font-size:1.5rem;font-weight:700;text-align:center;line-height:1.5;position:relative;color:var(--color-secondary)}.testimonial blockquote:before{content:"“";font-size:5rem;color:rgba(26,115,232,.2);position:absolute;left:-1rem;top:-2rem}.testimonial cite{display:block;font-size:.95rem;font-weight:500;margin-top:1rem;color:var(--color-muted)}.blog,.cta,.curriculum-details,.instructor,.problem,.stats{padding:clamp(3rem,7vw,5.5rem) 0}.problem{text-align:center;background-color:#fff}.problem h2{font-size:clamp(1.75rem,3vw,2.5rem);margin-bottom:1rem}.problem p{max-width:720px;margin:0 auto;color:var(--color-muted)}.instructor{background:linear-gradient(145deg,rgba(26,115,232,.06),hsla(0,0%,100%,.9))}.instructor-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));grid-gap:2.5rem;gap:2.5rem;align-items:center}.instructor-text h2{font-size:clamp(1.9rem,3vw,2.6rem);margin-bottom:1rem}.instructor-card{background:#fff;border-radius:24px;padding:2rem;text-align:center;box-shadow:0 18px 40px rgba(15,23,42,.12)}.instructor-card .photo{width:160px;height:160px;margin:0 auto 1.5rem;border-radius:28px;background:linear-gradient(135deg,#1a73e8,#6c5ce7)}.curriculum-details{background-color:#fff}.detail-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:1.5rem;gap:1.5rem}.detail-card{border:1px solid var(--color-border);border-radius:20px;padding:1.75rem;background:#fff;box-shadow:0 12px 28px rgba(15,23,42,.08)}.detail-card h3{margin-top:0;font-size:1.2rem}.detail-card ul{list-style:none;padding:0;margin:1rem 0 0}.detail-card li{padding:.35rem 0;border-bottom:1px solid var(--color-border)}.detail-card li:last-child{border-bottom:none}.stats{background-color:var(--color-background)}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));grid-gap:1.5rem;gap:1.5rem;text-align:center}.stat{padding:2rem;background:#fff;border-radius:20px;box-shadow:0 12px 30px rgba(15,23,42,.1)}.stat .value{font-size:2rem;font-weight:800;color:var(--color-secondary);margin:0 0 .5rem}.stat .label{margin:0;color:var(--color-muted);font-weight:500}.blog{background-color:#fff}.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));grid-gap:2rem;gap:2rem}.blog-card{border-radius:20px;border:1px solid var(--color-border);overflow:hidden;display:flex;flex-direction:column;background:#fff;box-shadow:0 12px 28px rgba(15,23,42,.08)}.blog-card .thumb{aspect-ratio:16/9;background-position:50%;background-size:cover}.blog-card h3{font-size:1.1rem;margin:1.25rem 1.5rem .75rem}.blog-card p{margin:0 1.5rem 1.25rem;color:var(--color-muted);flex:1 1}.read-more{margin:0 1.5rem 1.5rem;font-weight:600;color:var(--color-primary)}.cta{text-align:center;background:linear-gradient(180deg,rgba(26,115,232,.08),rgba(108,92,231,.08))}.cta h2{font-size:clamp(1.9rem,3vw,2.6rem);margin-bottom:1rem}.cta p{max-width:700px;margin:0 auto 2rem;color:var(--color-muted)}.cta-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.site-footer{padding:2rem 0;background:#0f172a;color:#f8fafc;text-align:center}.site-footer p{margin:0;font-size:.9rem;letter-spacing:.03em}@media (max-width:720px){.site-header .container{flex-direction:column;gap:1rem}.main-nav{flex-wrap:wrap;justify-content:center}.hero,.hero .container{text-align:left}.testimonial blockquote{font-size:1.25rem}}