/* Swiss / International Style — 12컬럼 그리드 · 산세리프 · 흑/백 + 적색 포인트
   원칙: 위계는 크기·굵기 대비로만, 빨강은 '점·선' 단위로만, 여백이 장식. */
:root{
  --ink:#0a0a0a;--paper:#fff;--red:#ff0000;--red-t:#d40000;--gray:#f5f5f5;
  /* --red: 선·점·밑줄·포커스 전용 / --red-t: 텍스트·흰 글자 배경용 적색(흰 배경 5.53:1) */
  --t1:#111;--t2:#2b2b2b;--t3:#555;--t4:#444;--line:#e2e2e2;
  --gut:20px;--mar:clamp(20px,4vw,64px);--secpad:clamp(80px,10vw,152px);
  --ease:cubic-bezier(.2,.7,.2,1);
}
*{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:88px}
body{font-family:"Pretendard Variable",Pretendard,"Helvetica Neue",Helvetica,Arial,"Apple SD Gothic Neo","Noto Sans KR",sans-serif;font-size:17px;line-height:1.7;color:var(--t1);background:var(--paper);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;word-break:keep-all;overflow-wrap:break-word;font-feature-settings:"ss01","tnum"}
a{color:inherit;text-decoration:none;transition:color 200ms linear}
a:hover{color:var(--red-t)}
.sec-b p a,.faq p a{border-bottom:1px solid currentColor}
:focus-visible{outline:2px solid var(--red);outline-offset:3px}
img{display:block;max-width:100%;height:auto}
ul,ol{list-style:none}
::selection{background:var(--red-t);color:#fff}
.skip{position:absolute;left:-9999px}.skip:focus{left:var(--mar);top:12px;background:var(--ink);color:#fff;padding:10px 14px;z-index:20}

.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gut);padding:0 var(--mar);max-width:1520px;margin:0 auto}

/* ── 헤더 ───────────────────────── */
.top{position:sticky;top:0;z-index:10;background:#fff;border-bottom:1px solid rgba(0,0,0,.08)}
.top .grid{align-items:center;height:68px}
.logo{grid-column:1/6;display:flex;align-items:center;gap:10px;color:var(--ink)}
.logo i{width:10px;height:10px;background:var(--red)}
.logo b{font-size:15px;font-weight:800;letter-spacing:.06em}
.logo span{font-size:13px;color:var(--t3);font-weight:500;padding-left:10px;border-left:1px solid var(--line)}
.logo:hover{color:var(--ink)}
.nav{grid-column:6/13;display:flex;justify-content:flex-end;align-items:center;gap:clamp(28px,3.4vw,52px);font-size:17px;font-weight:600;color:var(--ink);transition:font-size 500ms var(--ease)}
.top.scrolled .nav{font-size:16px}
.nav a{position:relative;padding:6px 0;white-space:nowrap}
.nav a[aria-current]{color:var(--ink)}
.nav a[aria-current]::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--red)}
.nav .nav-cta{color:#fff;background:var(--ink);padding:9px 18px;transition:background 200ms linear}
.nav .nav-cta:hover{background:var(--red-t);color:#fff}

/* ── 히어로 ─────────────────────── */
.hero .grid{padding-top:clamp(64px,9vw,136px);row-gap:0}
.hero .kicker{grid-column:1/13;display:flex;align-items:center;gap:14px;font-size:13.5px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;color:var(--t2);margin-bottom:clamp(24px,3vw,40px)}
.hero .kicker::before{content:"";width:32px;height:2px;background:var(--red)}
.hero h1{grid-column:1/12;font-size:clamp(30px,3.4vw,54px);font-weight:700;line-height:1.2;letter-spacing:-.03em;color:var(--ink)}
.hero .lead{grid-column:1/7;margin-top:clamp(40px,5vw,72px);padding-top:28px;border-top:1px solid var(--ink);font-size:clamp(17px,1.35vw,20px);line-height:1.75;color:var(--t2)}
.hero .facts{grid-column:8/13;margin-top:clamp(40px,5vw,72px);border-top:1px solid var(--ink)}
.hero .facts li{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:baseline;padding:15px 0;border-bottom:1px solid var(--line)}
.hero .facts li>span{font-size:14px;color:var(--t4)}
.hero .facts b{font-size:clamp(16px,1.3vw,19px);font-weight:600;letter-spacing:-.01em;color:var(--ink);text-align:right}
.hero-img{grid-column:1/13;margin:clamp(56px,7vw,104px) calc(var(--mar) * -1) 0;overflow:hidden;background:var(--gray)}
.hero-img img{width:100%;aspect-ratio:21/9;object-fit:cover}

/* ── 섹션 ───────────────────────── */
.sec{border-top:1px solid var(--line)}
.hero+.sec{border-top:0}
.sec>.grid{padding-top:var(--secpad);padding-bottom:var(--secpad)}
.sec-h{grid-column:1/5;align-self:start;position:sticky;top:108px;padding-right:var(--gut)}
.sec-h .no{display:flex;align-items:center;gap:10px;font-size:13.5px;font-weight:600;letter-spacing:.08em;color:var(--red-t);margin-bottom:20px}
.sec-h .no::after{content:"";width:24px;height:1px;background:currentColor}
.sec-h h2{font-size:clamp(24px,2vw,34px);font-weight:700;line-height:1.3;letter-spacing:-.025em;color:var(--ink)}
.sec-b{grid-column:5/13}
.sec-b>*+*{margin-top:40px}
.sec-b>p{font-size:18px;line-height:1.8;color:var(--t2);max-width:62ch}
.sec-b h3{font-size:20px;font-weight:700;letter-spacing:-.02em;line-height:1.4;color:var(--ink)}
.sec-b>h3{margin-top:64px}.sec-b>h3+*{margin-top:16px}
.sec-b p{color:var(--t2)}
.sec.gray{background:var(--gray);border-top:0}
.sec.gray+.sec{border-top:0}

/* 목록 */
ul.list{border-top:1px solid var(--ink)}
ul.list li{position:relative;padding:16px 0 16px 28px;border-bottom:1px solid var(--line);color:var(--t1);line-height:1.6}
ul.list li::before{content:"";position:absolute;left:0;top:28px;width:12px;height:1px;background:var(--red)}
ol.steps{counter-reset:s;border-top:1px solid var(--ink)}
ol.steps li{counter-increment:s;position:relative;padding:24px 0 24px 72px;border-bottom:1px solid var(--line);line-height:1.65}
ol.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:20px;font-size:28px;font-weight:400;letter-spacing:-.03em;color:var(--red-t);line-height:1.2}
ol.steps li b,ol.steps li h3{color:var(--ink);font-weight:700}
ol.steps li h3{font-size:18px;margin-bottom:4px}
ol.steps li p{margin:0}

/* 다단 카드 */
.cols{display:grid;grid-template-columns:repeat(var(--n,3),minmax(0,1fr));gap:48px var(--gut)}
.cols>div{border-top:1px solid var(--ink);padding-top:20px;min-width:0}
.cols>div>*+*{margin-top:12px}
.cols h3{font-size:19px}
.cols h3 a::after{content:"→";display:inline-block;margin-left:8px;color:var(--red-t);transition:transform 200ms var(--ease)}
.cols h3 a:hover::after{transform:translateX(4px)}
.cols p{font-size:15.5px;line-height:1.7}
.cols img{width:100%;aspect-ratio:4/3;object-fit:cover;margin-bottom:8px}
.cols ul.list{border-top:0}
.cols ul.list li{font-size:15px;padding:12px 0 12px 24px}
.cols ul.list li::before{top:24px}
p.num{font-size:clamp(32px,2.8vw,46px);font-weight:600;letter-spacing:-.05em;line-height:1;color:var(--ink)}
p.num small{font-size:16px;font-weight:500;letter-spacing:0;color:var(--t3);margin-left:4px}

/* 표 */
.tbl{overflow-x:auto;-webkit-overflow-scrolling:touch}
table.data{width:100%;border-collapse:collapse;font-size:15px;line-height:1.55}
table.data caption{caption-side:top;text-align:left;font-size:14px;font-weight:600;color:var(--t3);letter-spacing:.02em;padding-bottom:14px}
table.data th,table.data td{text-align:left;padding:16px 20px 16px 0;border-bottom:1px solid var(--line);vertical-align:top}
table.data thead th{font-size:13.5px;font-weight:600;letter-spacing:0;color:var(--t3);border-bottom:1px solid var(--ink);padding-top:0}
table.data tbody th{font-weight:600;color:var(--ink)}
table.data td{color:var(--t2)}
table.data td.num{color:var(--ink);font-weight:500;white-space:nowrap}
table.data tbody tr{transition:background 200ms linear}
table.data tbody tr:hover{background:rgba(0,0,0,.025)}

/* 사진 — 비대칭 모듈, 흑백 → 호버 컬러 */
.figs{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:var(--gut);counter-reset:f}
.figs figure{grid-column:span 2;counter-increment:f}
.figs figure:first-child{grid-column:span 4;grid-row:span 2}
.figs figure:first-child img{aspect-ratio:auto;height:calc(100% - 40px)}
.figs img{width:100%;aspect-ratio:4/3;object-fit:contain;background:var(--gray);cursor:zoom-in}
.figs figcaption{display:flex;gap:10px;font-size:14px;line-height:1.6;color:var(--t4);padding-top:10px}
.figs figcaption::before{content:"FIG." counter(f,decimal-leading-zero);flex:none;font-weight:600;color:var(--ink)}

/* 강조 섹션 — 검정 대신 연회색 면 */
.sec.dark{background:var(--gray);border-top:0}
.sec.dark+.sec{border-top:0}
.sec.gray+.sec.gray,.sec.gray+.sec.dark,.sec.dark+.sec.gray,.sec.dark+.sec.dark{border-top:1px solid var(--line)}

/* FAQ */
.faq{counter-reset:q;border-top:1px solid var(--ink)}
.faq .qa{counter-increment:q;display:grid;grid-template-columns:72px minmax(0,1fr);padding:32px 0;border-bottom:1px solid var(--line)}
.faq .qa::before{content:"Q" counter(q,decimal-leading-zero);font-size:13.5px;font-weight:600;color:var(--red-t);padding-top:4px}
.faq .qa h3,.faq .qa p{grid-column:2}
.faq .qa h3{font-size:clamp(18px,1.5vw,22px);font-weight:700;letter-spacing:-.025em;line-height:1.45;margin-bottom:12px}
.faq .qa p{font-size:16px;line-height:1.8;max-width:64ch}
.sec-b.faq>*+*{margin-top:0}

/* 관련 페이지 인덱스 */
.index{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px var(--gut)}
.sec-b.index>*+*{margin-top:0}
.index h3{font-size:13.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--t3);padding-bottom:14px;border-bottom:1px solid var(--ink)}
.index li a{display:flex;justify-content:space-between;align-items:center;padding:16px 0;border-bottom:1px solid var(--line);font-size:16px;font-weight:600;color:var(--ink)}
.index li a::after{content:"→";color:var(--t3);transition:transform 200ms var(--ease),color 200ms linear}
.index li a:hover{color:var(--red-t)}
.index li a:hover::after{transform:translateX(4px);color:var(--red-t)}

/* CTA — 검정 포스터 */
.cta{background:var(--gray);color:var(--ink)}
.cta .grid{padding-top:clamp(96px,11vw,168px);padding-bottom:clamp(72px,8vw,120px);align-items:end;row-gap:48px}
.cta h2{grid-column:1/10;font-size:clamp(28px,2.8vw,40px);font-weight:700;line-height:1.25;letter-spacing:-.03em}
.cta h2::before{content:"";display:block;width:14px;height:14px;background:var(--red);margin-bottom:36px}
.cta a{grid-column:10/13;justify-self:end;display:inline-flex;align-items:center;gap:14px;background:var(--ink);color:#fff;padding:20px 30px;font-size:16px;font-weight:700;transition:background 200ms linear,color 200ms linear}
.cta a::after{content:"→";transition:transform 200ms var(--ease)}
.cta a:hover{background:var(--red-t);color:#fff}
.cta a:hover::after{transform:translateX(4px)}
.btn{display:inline-flex;gap:10px;background:var(--ink);color:#fff;padding:16px 26px;font-weight:700}
.btn:hover{background:var(--red-t);color:#fff}

/* 푸터 */
.foot{background:#ededed;color:#333;text-align:center;border-top:0}
.f-in{max-width:1100px;margin:0 auto;padding:80px var(--mar) 64px}
.f-logo{display:inline-block}.f-logo img{height:56px;width:auto;margin:0 auto}
.f-links{display:flex;flex-wrap:wrap;justify-content:center;gap:10px 44px;margin:44px 0 0;padding-bottom:36px;border-bottom:1px solid #d6d6d6;font-size:17px;font-weight:500}
.f-links a{display:inline-flex;align-items:center;justify-content:center;min-width:44px;color:#222}.f-links a:hover{color:var(--red-t)}
.f-biz{font-style:normal;color:#555;font-size:15px;line-height:1.5;margin-top:32px}
.f-biz p{display:flex;flex-wrap:wrap;justify-content:center;margin:0 0 10px}
.f-biz p:empty{display:none}
.f-biz span+span::before{content:"";display:inline-block;width:1px;height:12px;background:#bdbdbd;margin:0 18px;vertical-align:-1px}
.f-biz a{color:inherit}.f-biz a:hover{color:var(--red-t)}
.f-copy{margin-top:22px;color:#5c5c5c;font-size:14px;letter-spacing:.02em}
@media (max-width:760px){.f-in{padding:56px 20px 44px}.f-logo img{height:52px}.f-links{gap:10px 24px;font-size:15px;margin-top:34px;padding-bottom:28px}.f-biz{font-size:13.5px;margin-top:24px}.f-biz p{flex-direction:column;align-items:center;gap:4px;margin-bottom:4px}.f-biz span+span::before{display:none}.f-copy{font-size:13.5px;margin-top:18px}}

/* 스크롤 등장 */
.rv{opacity:0;transform:translateY(16px);transition:opacity 400ms var(--ease),transform 400ms var(--ease)}
.rv.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;animation:none!important}}

/* 반응형 */
@media (max-width:1024px){
  .sec-h{grid-column:1/13;position:static;margin-bottom:40px}
  .sec-b{grid-column:1/13}
  .hero .lead{grid-column:1/13}.hero .facts{grid-column:1/13;margin-top:40px}
}
@media (max-width:760px){
  body{font-size:16px}
  .logo span{display:none}.logo{grid-column:1/5}
  .nav{grid-column:5/13;gap:14px;font-size:13px}.nav .nav-cta{padding:7px 12px}
  .hero h1{grid-column:1/13}
  .hero-img img{aspect-ratio:4/3}
  .sec-b>p{font-size:16.5px}
  .cols{grid-template-columns:1fr!important;gap:40px}
  .index,.f-nav{grid-template-columns:1fr}
  .figs{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .figs figure,.figs figure:first-child{grid-column:span 2;grid-row:auto}
  .figs figure:first-child img{height:auto;aspect-ratio:4/3}
  .figs figure:nth-child(n+2){grid-column:span 1}
  .faq .qa{grid-template-columns:48px minmax(0,1fr);padding:24px 0}
  ol.steps li{padding-left:56px}ol.steps li::before{font-size:22px}
  .cta h2,.cta a,.f-brand,.f-nav{grid-column:1/13}.cta a{justify-self:start}
  table.data{font-size:14px}
}
@media (max-width:480px){.nav a:not(.nav-cta){display:none}}

/* ── 드롭다운 내비 ─────────────── */
.nav .dd{position:relative}
.nav .dd-t{display:block;padding:22px 0}
.nav .dd-m{position:absolute;top:100%;left:-24px;min-width:220px;background:#fff;border:1px solid var(--line);box-shadow:0 18px 40px rgba(0,0,0,.08);padding:10px 0;opacity:0;visibility:hidden;transform:translateY(6px);transition:opacity 200ms linear,transform 200ms var(--ease),visibility 0s 200ms}
.nav .dd:hover .dd-m,.nav .dd:focus-within .dd-m{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.nav .dd-m a{display:block;padding:10px 24px;color:var(--t1);font-weight:500;white-space:nowrap}
.nav .dd-m a:hover{color:var(--red-t);background:var(--gray)}
.nav .dd-t[aria-current]::after{bottom:16px}
.nav .dd:last-child .dd-m{left:auto;right:-24px}
.mnav{display:none}

/* ── 홈: 투명 헤더 + 풀스크린 비주얼 ── */
.vis{position:relative;min-height:clamp(560px,calc(86svh - 92px),820px);display:flex;flex-direction:column;justify-content:flex-end;color:#fff;overflow:hidden;background:#1d2a2f}
.vis-slides img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:0;transform:scale(1.08);transition:opacity 1600ms linear,transform 7600ms linear}
.vis-slides img.on{opacity:1;transform:scale(1)}
.vis::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(8,16,24,.68) 0%,rgba(8,16,24,.5) 50%,rgba(8,16,24,.22) 72%,rgba(8,16,24,.06) 90%),linear-gradient(180deg,rgba(8,16,24,.32) 0%,rgba(8,16,24,.1) 35%,rgba(8,16,24,.35) 70%,rgba(8,16,24,.8) 100%);pointer-events:none}
.vis .grid{position:relative;z-index:2;width:100%}
.vis-in{padding-top:88px;row-gap:0}
.vis .kicker{grid-column:1/13;display:flex;align-items:center;gap:14px;font-size:13px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;margin-bottom:28px;color:rgba(255,255,255,.9)}
.vis .kicker::before{content:"";width:32px;height:2px;background:var(--red)}
.vis h1{grid-column:1/11;font-size:clamp(24px,2.4vw,38px);font-weight:700;line-height:1.2;letter-spacing:-.03em;text-shadow:0 2px 30px rgba(0,0,0,.25)}
.vis .lead{grid-column:1/8;margin-top:32px;font-size:clamp(16px,1.3vw,19px);line-height:1.75;color:rgba(255,255,255,.92)}
.vis-btn{grid-column:1/13;display:flex;flex-wrap:wrap;gap:12px;margin-top:40px}
.btn-w,.btn-o{display:inline-flex;align-items:center;gap:12px;padding:17px 28px;font-weight:700;font-size:15px;transition:background 200ms linear,color 200ms linear,border-color 200ms linear}
.btn-w{background:#fff;color:var(--ink)}.btn-w::after{content:"↓"}
.btn-w:hover{background:var(--red-t);color:#fff}
.btn-o{border:1px solid rgba(255,255,255,.7);color:#fff}.btn-o::after{content:"→"}
.btn-o:hover{background:#fff;color:var(--ink);border-color:#fff}
.vis-ft{margin-top:clamp(56px,8vh,96px);border-top:1px solid rgba(255,255,255,.35);padding-top:24px!important;padding-bottom:32px!important;align-items:end}
.vis-facts{grid-column:1/11;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--gut)}
.vis-facts b{display:block;font-size:clamp(20px,1.7vw,28px);font-weight:700;letter-spacing:-.03em;line-height:1.1}
.vis-facts span{font-size:13.5px;color:rgba(255,255,255,.85)}
.vis-no{grid-column:11/13;justify-self:end;font-size:13px;letter-spacing:.1em;color:rgba(255,255,255,.75)}
.vis-no b{color:#fff;font-weight:700}

/* ── 섹션 설명 + 카드 ─────────── */
.sec-d{margin-top:20px;font-size:16px;line-height:1.7;color:var(--t2);max-width:30ch}
.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:48px var(--gut)}
.sec-b>.cards{margin-top:0}
.cards a{display:block;color:var(--ink)}
.cards figure{overflow:hidden;background:var(--gray);aspect-ratio:4/3;margin-bottom:18px}
.cards img{width:100%;height:100%;object-fit:cover;transition:transform 700ms var(--ease)}
.cards a:hover img{transform:scale(1.05)}
.cards .c-no{display:block;font-size:13.5px;font-weight:700;letter-spacing:.1em;color:var(--red-t);margin-bottom:6px}
.cards h3{font-size:20px;font-weight:700;letter-spacing:-.025em;line-height:1.35;display:flex;justify-content:space-between;gap:12px;padding-bottom:12px;border-bottom:1px solid var(--ink)}
.cards h3::after{content:"→";font-weight:400;transition:transform 200ms var(--ease),color 200ms linear}
.cards a:hover h3{color:var(--red-t)}
.cards a:hover h3::after{transform:translateX(4px);color:var(--red-t)}
.cards p{margin-top:12px;font-size:15px;line-height:1.65;color:var(--t2)}
.cards-tech li:nth-child(-n+2){grid-column:span 1}
.cards-wide{grid-template-columns:repeat(2,minmax(0,1fr))}
.cards-wide figure{aspect-ratio:16/10}

@media (max-width:1024px){
  .nav{display:none}
  .mnav{display:block;grid-column:12/13;justify-self:end}
  .mnav summary{list-style:none;cursor:pointer;width:40px;height:40px;display:grid;place-items:center}
  .mnav summary::-webkit-details-marker{display:none}
  .mnav summary span,.mnav summary span::before,.mnav summary span::after{display:block;width:22px;height:2px;background:var(--ink);position:relative;transition:transform 200ms var(--ease)}
  .mnav summary span::before,.mnav summary span::after{content:"";position:absolute;left:0}
  .mnav summary span::before{top:-7px}.mnav summary span::after{top:7px}
  .mnav[open] summary span{background:transparent!important}
  .mnav[open] summary span::before{transform:translateY(7px) rotate(45deg)}
  .mnav[open] summary span::after{transform:translateY(-7px) rotate(-45deg)}
  .mnav-p{position:fixed;top:68px;left:0;right:0;bottom:0;background:#fff;overflow-y:auto;padding:24px var(--mar) 48px;border-top:1px solid var(--line)}
  .mnav-p p{font-size:13.5px;font-weight:700;letter-spacing:.02em;color:var(--red-t);margin:24px 0 4px}
  .mnav-p li a{display:block;padding:12px 0;border-bottom:1px solid var(--line);font-size:18px;font-weight:600;color:var(--ink)}
  .mnav-p .btn{margin-top:32px}
  .logo{grid-column:1/11}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .vis h1,.vis .lead{grid-column:1/13}
  .vis-facts{grid-column:1/13;grid-template-columns:repeat(2,minmax(0,1fr));row-gap:20px}
  .vis-no{display:none}
  .sec-d{max-width:none}
}
@media (max-width:760px){
  .cards,.cards-wide{grid-template-columns:1fr}
  .vis-in{padding-top:64px}
}

/* 와이드 섹션: 제목 줄 → 아래 12컬럼 전체 카드 */
.sec.wide .sec-h{grid-column:1/13;position:static;display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gut);align-items:end;padding:0 0 48px;margin-bottom:56px;border-bottom:1px solid var(--ink)}
.sec.wide .sec-h .no{grid-column:1/13}
.sec.wide .sec-h h2{grid-column:1/7;font-size:clamp(26px,2.4vw,40px);letter-spacing:-.03em}
.sec.wide .sec-h .sec-d{grid-column:8/13;max-width:none;margin:0;font-size:17px}
.sec.wide .sec-b{grid-column:1/13}
.sec.wide .cards{gap:64px var(--gut)}
.sec.wide .cards h3{font-size:22px}
.sec.wide .cards-tech{grid-template-columns:repeat(6,minmax(0,1fr))}
.sec.wide .cards-tech li{grid-column:span 2}
.sec.wide .cards-tech li:nth-child(-n+2){grid-column:span 3}
.sec.wide .cards-tech li:nth-child(-n+2) figure{aspect-ratio:16/10}
@media (max-width:1024px){
  .sec.wide .sec-h h2,.sec.wide .sec-h .sec-d{grid-column:1/13}.sec.wide .sec-h .sec-d{margin-top:16px}
  .sec.wide .cards-tech{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sec.wide .cards-tech li,.sec.wide .cards-tech li:nth-child(-n+2){grid-column:span 1}
}
@media (max-width:760px){.sec.wide .cards-tech{grid-template-columns:1fr}}

/* 로고 이미지 */
.logo img,.logo svg{height:var(--lh);width:auto;display:block;transition:height 500ms var(--ease)}
/* 스크롤 헤더: 넓게 시작 → 축소·반투명·그림자, 로고 색 전환(글자 남색→청록, 심볼 청록→남색), 하단 적색 진행선.
   높이가 줄어든 만큼 margin-bottom으로 메워 본문이 튀지 않음 */
.top{--hh0:92px;--hh:92px;--lh:56px;background:transparent;border-bottom-color:transparent;margin-bottom:calc(var(--hh0) - var(--hh));transition:margin-bottom 500ms var(--ease),border-color 300ms linear,box-shadow 500ms var(--ease)}
.top.scrolled{--hh:64px;--lh:40px;border-bottom-color:rgba(14,40,84,.06);box-shadow:0 10px 30px -18px rgba(14,40,84,.35)}
.top::before{content:"";position:absolute;inset:0;z-index:-1;background:#fff;transition:background-color 500ms linear}
.top.scrolled::before{background:rgba(255,255,255,.8);-webkit-backdrop-filter:saturate(1.6) blur(14px);backdrop-filter:saturate(1.6) blur(14px)}
.top .grid{height:var(--hh);transition:height 500ms var(--ease)}
.mnav-p{top:var(--hh)!important}
.logo svg{--lt:#0e2854;--ls:#2a8296;transition:height 500ms var(--ease),--lt 600ms var(--ease),--ls 600ms var(--ease)}
.top.scrolled .logo svg{--lt:#2a8296;--ls:#0e2854}
@property --lt{syntax:'<color>';inherits:true;initial-value:#0e2854}
@property --ls{syntax:'<color>';inherits:true;initial-value:#2a8296}
@supports (animation-timeline:scroll()){
  .top::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--red);transform-origin:0 50%;transform:scaleX(0);animation:topbar-p linear both;animation-timeline:scroll(root)}
  @keyframes topbar-p{to{transform:scaleX(1)}}
}
@media (max-width:760px){.top{--hh0:72px;--hh:72px;--lh:42px}.top.scrolled{--hh:56px;--lh:32px}}
@media (max-width:760px){.vis .kicker{font-size:13.5px;letter-spacing:.02em;margin-bottom:16px}.vis .kicker::before{width:20px}}

/* 이미지 확대 보기 — 작은 칸의 그래프·도면도 원본 크기로 */
.zoom{margin:0;inset:0;width:100vw;height:100vh;max-width:none;max-height:none;border:0;padding:0;background:transparent;overflow:hidden}
.zoom[open]{display:grid;place-items:center;animation:zfade 220ms var(--ease)}
.zoom::backdrop{background:rgba(10,14,20,.92)}
.zoom figure{display:flex;flex-direction:column;align-items:center;max-width:calc(100vw - 160px)}
.zoom img{max-width:min(100%,1600px);max-height:calc(100vh - 120px);width:auto;height:auto;background:#fff;box-shadow:0 20px 60px rgba(0,0,0,.45);opacity:0;transition:opacity 260ms linear}
.zoom img.on{opacity:1}
.zoom figcaption{display:flex;gap:24px;justify-content:space-between;width:100%;padding-top:14px;color:#cfd4da;font-size:14px;line-height:1.5}
.zoom figcaption b{flex:none;font-weight:500;color:#8a929b;font-variant-numeric:tabular-nums}
.zoom button{position:fixed;background:none;border:0;color:#fff;cursor:pointer;opacity:.75;transition:opacity 150ms linear;line-height:1}
.zoom button:hover,.zoom button:focus-visible{opacity:1}
.zoom .z-x{top:18px;right:24px;font-size:40px}
.zoom .z-p,.zoom .z-n{top:50%;transform:translateY(-50%);font-size:64px;padding:20px 24px}
.zoom .z-p{left:12px}.zoom .z-n{right:12px}
@keyframes zfade{from{opacity:0}to{opacity:1}}
@media (max-width:760px){.zoom figure{max-width:100vw}.zoom img{max-height:calc(100vh - 140px)}.zoom .z-p,.zoom .z-n{top:auto;bottom:8px;transform:none;font-size:44px}}
.hero-img img.natural{aspect-ratio:auto}
.zoom button:focus{outline:none}.zoom button:focus-visible{outline:1px solid rgba(255,255,255,.5);outline-offset:4px}
/* 그래프·도식은 처음부터 컬러로 (색으로 계열을 구분하므로) */
.figs img.chart,img.chart{filter:none;background:#fff}
.hero-img img.color{filter:none}

@media (max-width:760px){.vis{min-height:auto}.vis::after{background:linear-gradient(180deg,rgba(8,16,24,.55) 0%,rgba(8,16,24,.58) 50%,rgba(8,16,24,.85) 100%)}}
.vis .lead{max-width:38em;text-shadow:0 1px 14px rgba(0,0,0,.5)}
.vis .kicker,.vis-facts{text-shadow:0 1px 10px rgba(0,0,0,.45)}
@media (max-height:860px) and (min-width:761px){.vis-in{padding-top:52px}.vis .kicker{margin-bottom:18px}.vis .lead{margin-top:22px}.vis-btn{margin-top:28px}.vis-ft{margin-top:40px;padding-bottom:22px!important}}