:root{--navy:#122e40;--ink:#182f40;--muted:#596a76;--blue:#08769b;--lime:#8fc63e;--line:#dce4e7;--pale:#f3f6f6}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0;font-family:"Malgun Gothic","Apple SD Gothic Neo",sans-serif;color:var(--ink);line-height:1.75;word-break:keep-all}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a,button{touch-action:manipulation}img{display:block;max-width:100%;height:auto}figure,p{margin:0}h1,h2,h3{line-height:1.4;letter-spacing:-.045em;margin:0}h2{font-size:clamp(29px,3vw,40px);font-weight:750}h3{font-size:22px}p+p{margin-top:18px}.wrap{width:min(1200px,calc(100% - 72px));margin:auto}.section{padding:100px 0}.tint{background:var(--pale)}.eyebrow{font-size:11px;font-weight:750;letter-spacing:.15em;color:var(--blue);margin-bottom:20px}.eyebrow span{display:inline-block;width:7px;height:7px;background:var(--lime);border-radius:50%;margin-right:6px}.muted{color:var(--muted);font-size:15px}.lead{font-size:20px;font-weight:550;line-height:1.9}.note{font-size:13px;color:var(--muted);margin-top:26px;line-height:1.8}.review-bar{background:#eaf0e0;color:#40552c;text-align:center;font-size:12px;padding:7px 15px}.header{position:sticky;top:0;z-index:20;background:#ffffffed;border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{height:88px;display:flex;align-items:center;justify-content:space-between;gap:30px}.brand img{width:137px;height:63px;object-fit:contain}.header nav{display:flex;align-items:center;gap:30px;font-size:14px;font-weight:650}.nav-cta{background:var(--navy);color:#fff;padding:11px 20px}.menu-toggle{display:none}.hero{display:grid;grid-template-columns:1fr 1fr;gap:50px;padding-top:68px;padding-bottom:70px;align-items:center}.hero 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@media(max-width:1000px){.wrap{width:calc(100% - 48px)}.header nav{gap:18px}.hero{gap:30px}.hero-visual{min-height:450px}.hero-visual>img{height:250px}.hero h1{font-size:44px}.hero-desc{font-size:18px}.hero .actions{gap:18px}.about-grid,.contact-grid{gap:45px}.strip-inner i{margin:0 8px}.strip-inner>p{display:none}.image-button{height:220px}.facility-grid img{height:170px}.iso{gap:40px}.quote-panel{padding:25px}}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

/* 제품 형상과 적용 분야 확장 */
.copper-feature{display:grid;grid-template-columns:.9fr 1.3fr;gap:38px;background:var(--pale);padding:35px;margin-bottom:38px}.copper-feature h3{font-size:29px}.copper-feature p:not(.eyebrow){font-size:14px;color:var(--muted);margin:18px 0 24px}.copper-examples{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;align-items:center}.copper-examples .image-button{height:230px;padding:10px 0}.copper-examples figcaption{font-size:11px;text-align:center;margin-top:8px}.application>p.muted{margin-top:15px;font-size:14px}.application-photo-grid{display:grid;grid-template-columns:1fr 1fr;gap:35px 28px;margin-top:30px}.application-photo-grid h4{font-size:18px;margin:0 0 14px}.application-pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}.application-image{height:190px;padding:0;border:0}.application-image img{object-fit:cover}.application-image>span{color:#fff;background:#122e40aa;padding:2px 6px}.application-pair figcaption{font-size:12px;color:var(--muted);margin-top:10px}.facility-grid{grid-template-columns:repeat(2,1fr)}.facility-grid img{height:260px}.product>p:last-child{min-height:24px}.process-grid{margin-top:24px}
@media(max-width:1000px){.copper-feature{grid-template-columns:1fr;padding:28px;gap:25px}.copper-examples .image-button{height:240px}.facility-grid img{height:220px}.application-image{height:160px}}
@media(max-width:740px){.copper-feature{padding:22px 18px;gap:25px}.copper-feature h3{font-size:24px}.copper-feature .eyebrow{font-size:9px;letter-spacing:.09em}.copper-examples{gap:8px}.copper-examples .image-button{height:155px}.copper-examples figcaption{font-size:10px}.copper-feature .text-link{font-size:12px}.application-photo-grid{grid-template-columns:1fr;gap:30px}.application-image{height:165px}.application-pair{gap:12px}.application-pair figcaption{font-size:11px}.facility-grid{grid-template-columns:1fr}.facility-grid img{height:auto;max-height:280px}.product h3{font-size:15px}}

.greeting-section{padding-bottom:90px}.greeting-panel{display:grid;grid-template-columns:1fr 1.2fr;gap:70px;padding:48px;border:1px solid var(--line);background:#f5f7f7}.greeting-heading h2{font-size:30px;line-height:1.6}.greeting-body{font-size:15px;color:var(--muted)}.greeting-intro{font-weight:650;color:var(--ink);font-size:17px}.greeting-signature{text-align:right;margin-top:30px!important;font-size:13px;color:var(--ink)}.greeting-signature strong{font-size:21px;letter-spacing:.18em;margin-left:12px}.greeting-line{display:block;width:65px;height:4px;background:#a7cbd6;margin-top:25px;border-radius:5px}@media(max-width:1000px){.greeting-panel{gap:35px;padding:35px}}@media(max-width:740px){.greeting-section{padding-bottom:60px}.greeting-panel{grid-template-columns:1fr;padding:28px 23px;gap:28px}.greeting-heading h2{font-size:25px}.greeting-body{font-size:14px}.greeting-intro{font-size:15px}.greeting-signature strong{font-size:19px}}

.about-materials{margin-top:32px;max-width:420px}.about-materials>p{font-size:13px;color:var(--muted)}.about-material-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:14px}.about-material-grid a{display:block;padding:10px 7px;background:#f3f6f6;border:1px solid var(--line);text-align:center}.about-material-grid img{width:100%;height:100px;object-fit:contain;background:white}.about-material-grid span{display:block;font-size:11px;margin-top:9px;font-weight:650}.about-materials small{display:block;color:var(--muted);font-size:10px;margin-top:10px}.text-accent{color:#146b70;font-weight:800}@media(max-width:740px){.about-materials{max-width:none;margin-top:25px}.about-material-grid img{height:95px}.about-material-grid span{font-size:10px}}