:root{--navy:#102d53;--blue:#2f66b3;--sky:#eaf2ff;--coral:#e7664b;--ink:#172940;--muted:#5c6c80;--line:#d7e0eb;--mist:#f6f8fb;--white:#fff;--shadow:0 18px 50px rgba(15,45,83,.12)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);background:#fff;font-family:Pretendard,"Noto Sans KR","Apple SD Gothic Neo",Arial,sans-serif;font-size:16px;line-height:1.72}a{color:inherit;text-decoration:none}img{display:block;max-width:100%}.wrap{width:min(1140px,calc(100% - 40px));margin:auto}
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.nav{min-height:82px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px}.brand-symbol img{width:56px;height:56px;object-fit:contain}.brand-wordmark{display:flex;flex-direction:column;line-height:1.05}.brand-ko{font-weight:900;font-size:1rem}.brand-en{margin-top:5px;font-weight:700;font-size:.61rem;letter-spacing:.13em;color:var(--muted)}.nav-right{display:flex;gap:22px;align-items:center;font-weight:800}.nav-right a{border-bottom:2px solid transparent}.nav-right a:hover{color:var(--blue);border-bottom-color:var(--blue)}.lang{font-size:.85rem;color:var(--blue)}
.detail-hero{background:linear-gradient(130deg,#0e294d 0%,#244e83 66%,#326bb6 100%);color:#fff;padding:56px 0 70px}.crumb{display:flex;align-items:center;gap:9px;font-size:.84rem;color:#c7d8ee;margin-bottom:30px;flex-wrap:wrap}.crumb a{text-decoration:underline;text-underline-offset:3px}.hero-grid{display:grid;grid-template-columns:1.12fr .88fr;gap:58px;align-items:center}.eyebrow{font-size:.79rem;font-weight:900;letter-spacing:.16em;color:#ffb29f;text-transform:uppercase}.detail-hero h1{font-size:clamp(2.35rem,5vw,4.6rem);line-height:1.08;letter-spacing:-.055em;margin:13px 0 16px}.lead{font-size:1.18rem;font-weight:760;color:#fff;margin:0 0 14px}.hero-desc{color:#d9e5f3;margin:0;max-width:710px}.hero-figure{margin:0}.hero-image{width:100%;height:360px;object-fit:cover;border-radius:22px;background:#fff;box-shadow:var(--shadow)}.hero-figure figcaption{font-size:.76rem;color:#c6d6e9;margin-top:9px}
.main{padding:58px 0 94px}.fact-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:-92px 0 66px;position:relative;z-index:2}.fact{min-height:102px;padding:20px 21px;background:#fff;border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:12px;box-shadow:0 10px 28px rgba(15,45,83,.09)}.fact small{display:block;color:var(--muted);font-weight:800;font-size:.78rem;margin-bottom:7px}.fact strong{display:block;color:var(--navy);font-size:1.02rem;line-height:1.4}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:56px;align-items:start}.content-section{padding:0 0 56px;margin-bottom:56px;border-bottom:1px solid var(--line)}.section-kicker{font-size:.72rem;color:var(--coral);font-weight:900;letter-spacing:.18em}.content-section h2,.source-note h2{font-size:clamp(1.65rem,3vw,2.15rem);line-height:1.25;letter-spacing:-.035em;margin:6px 0 20px}.content-section p,.source-note p{color:var(--muted);margin:0}.check-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}.check-list li{position:relative;padding:11px 0 11px 22px;border-bottom:1px solid #e7edf4}.check-list li:before{content:"";position:absolute;left:2px;top:21px;width:8px;height:8px;border-radius:50%;background:var(--blue)}
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px;background:#fff}table{width:100%;border-collapse:collapse;min-width:680px;font-size:.9rem}th{background:var(--navy);color:#fff;text-align:left;padding:13px 14px;white-space:nowrap}td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}tbody tr:nth-child(even){background:var(--mist)}tbody tr:last-child td{border-bottom:0}.table-note{font-size:.82rem!important;margin-top:12px!important}.split-notes{display:grid;grid-template-columns:1fr 1fr;gap:28px}.attention{background:var(--sky);border:1px solid #bfd2ee;border-left:5px solid var(--coral);padding:24px;border-radius:12px}.attention strong{display:block;color:var(--navy);margin-bottom:7px}.faq-list details{border-top:1px solid var(--line);padding:0}.faq-list details:last-child{border-bottom:1px solid var(--line)}.faq-list summary{cursor:pointer;font-weight:850;color:var(--navy);padding:18px 38px 18px 0;position:relative}.faq-list summary:after{content:"+";position:absolute;right:6px;color:var(--blue);font-size:1.35rem}.faq-list details[open] summary:after{content:"–"}.faq-list p{padding:0 22px 20px 0}.source-note{background:#f7f8fa;border:1px solid var(--line);border-radius:14px;padding:26px}.source-note h2{font-size:1.2rem;margin:0 0 8px}.side-card{position:sticky;top:108px;background:#fff;border:1px solid var(--line);border-top:5px solid var(--coral);border-radius:14px;padding:22px;box-shadow:0 10px 32px rgba(15,45,83,.08)}.side-card>strong{display:block;color:var(--navy);font-size:1.08rem;margin-bottom:12px}.side-card .check-list{display:block}.side-card .check-list li{font-size:.88rem;padding:8px 0 8px 18px}.side-card .check-list li:before{top:16px;width:7px;height:7px}.side-card>a{display:block;margin-top:20px;padding-top:15px;border-top:1px solid var(--line);color:var(--blue);font-weight:900}.cta{margin-top:62px;padding:35px;border-radius:18px;background:var(--navy);color:#fff;display:flex;justify-content:space-between;align-items:center;gap:24px}.cta h2{margin:0 0 7px;line-height:1.3}.cta p{margin:0;color:#d1ddec;max-width:760px}.btn{display:inline-flex;justify-content:center;align-items:center;white-space:nowrap;padding:13px 20px;border-radius:9px;background:#fff;color:var(--navy);border:2px solid #fff;font-weight:900}.btn:hover{background:var(--sky);border-color:var(--sky)}.related{padding-top:74px}.related>h2{font-size:1.9rem;letter-spacing:-.03em}.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.related-grid a{display:flex;flex-direction:column;min-height:154px;padding:22px;border:1px solid var(--line);border-radius:14px;background:#fff}.related-grid a:hover{border-color:var(--blue);box-shadow:var(--shadow)}.related-grid small{color:var(--coral);font-weight:900}.related-grid strong{font-size:1.08rem;color:var(--navy);margin:7px 0 auto}.related-grid span{color:var(--blue);font-weight:850;margin-top:16px}
.catalog-hero{padding:84px 0 74px;background:linear-gradient(130deg,#0e294d,#2f66b3);color:#fff}.catalog-hero h1{font-size:clamp(2.7rem,5.5vw,5rem);line-height:1.05;letter-spacing:-.06em;margin:14px 0 20px}.catalog-hero p{max-width:820px;color:#d8e4f2;font-size:1.04rem}.catalog-actions{display:flex;gap:24px;align-items:center;margin-top:28px;font-weight:850}.catalog-actions>a:not(.btn){color:#fff;text-decoration:underline;text-underline-offset:4px}.catalog{padding:72px 0 96px}.catalog-group{margin-bottom:76px}.group-head{display:flex;justify-content:space-between;gap:30px;align-items:end;margin-bottom:24px}.group-head small{font-weight:900;color:var(--coral);letter-spacing:.14em}.group-head h2{font-size:clamp(1.8rem,3vw,2.4rem);letter-spacing:-.04em;margin:4px 0 0}.group-head p{color:var(--muted);margin:0;max-width:360px;text-align:right}.catalog-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.membrane-card{border:1px solid var(--line);border-radius:17px;overflow:hidden;background:#fff;transition:.2s}.membrane-card:hover{transform:translateY(-4px);border-color:var(--blue);box-shadow:var(--shadow)}.membrane-card img{width:100%;height:205px;object-fit:cover;background:var(--mist)}.card-copy{padding:22px}.card-copy small{color:var(--coral);font-weight:900;font-size:.74rem}.card-copy h3{font-size:1.22rem;line-height:1.35;margin:7px 0;color:var(--navy)}.card-copy p{color:var(--muted);font-size:.91rem;margin:0 0 15px}.card-copy span{font-weight:900;color:var(--blue)}.catalog-note{padding:28px;border:1px solid #bfd2ee;border-left:5px solid var(--blue);background:var(--sky);border-radius:12px}.catalog-note strong{color:var(--navy);font-size:1.05rem}.catalog-note p{margin:7px 0 0;color:#43566e}
footer{background:#091d38;color:#c0ccda;padding:34px 0;font-size:.86rem}.footer-grid{display:flex;justify-content:space-between;gap:20px;align-items:center}.footer-grid a{color:#fff;text-decoration:underline;text-underline-offset:3px}
@media(max-width:920px){.hero-grid,.article-layout{grid-template-columns:1fr}.hero-image{height:300px}.fact-grid{grid-template-columns:repeat(2,1fr)}.side-card{position:static}.catalog-grid,.related-grid{grid-template-columns:repeat(2,1fr)}.split-notes{grid-template-columns:1fr}}
@media(max-width:620px){.wrap{width:min(100% - 28px,1140px)}.nav{min-height:72px}.brand-symbol img{width:46px;height:46px}.nav-right>a:not(.lang){display:none}.detail-hero{padding:38px 0 54px}.detail-hero h1{font-size:2.35rem}.hero-image{height:245px}.main{padding-top:36px}.fact-grid{grid-template-columns:1fr;margin:-68px 0 50px}.article-layout{gap:30px}.content-section{padding-bottom:42px;margin-bottom:42px}.check-list{grid-template-columns:1fr}.cta{display:block}.cta .btn{margin-top:20px;width:100%}.catalog-grid,.related-grid{grid-template-columns:1fr}.group-head{display:block}.group-head p{text-align:left;margin-top:8px}.catalog-actions{align-items:flex-start;flex-direction:column}.footer-grid{align-items:flex-start;flex-direction:column}.membrane-card img{height:220px}}