:root { --blue:#256BFF; --ink:#08090A; --muted:#687180; --line:#E4E8EF; --surface:#F5F6F8; }
* { box-sizing:border-box; }
html { scroll-behavior:smooth; }
body { margin:0; color:var(--ink); background:#fff; font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Apple SD Gothic Neo","Noto Sans KR",sans-serif; letter-spacing:-.025em; word-break:keep-all; }
html[lang="ja"] body { word-break:normal; overflow-wrap:anywhere; }
html[lang="ja"] .article-body,
html[lang="ja"] .toc,
html[lang="ja"] .deck,
html[lang="ja"] .solution-row,
html[lang="ja"] .steps li { overflow-wrap:anywhere; word-break:normal; }
a { color:inherit; text-decoration:none; }
.wrap { width:min(1180px,calc(100% - 64px)); margin:0 auto; }
body > header { height:78px; display:flex; align-items:center; position:sticky; top:0; z-index:50; border-bottom:1px solid var(--line); background:rgba(255,255,255,.95); backdrop-filter:blur(16px); }
.nav { width:100%; display:grid; grid-template-columns:260px 1fr 260px; align-items:center; gap:14px; }
.logo { display:block; width:188px; height:auto; }
.menu { display:flex; justify-content:center; gap:58px; font-size:14px; font-weight:760; white-space:nowrap; }
.menu a:hover { color:var(--blue); }
.lang { justify-self:end; display:flex; gap:3px; padding:3px; border:1px solid var(--line); border-radius:999px; }
.lang span,.lang a { padding:7px 10px; color:#687180; font-size:11px; font-weight:750; }
.lang .active { border-radius:999px; color:#fff; background:var(--blue); }
.breadcrumb { display:flex; gap:9px; padding-top:54px; color:#7D8592; font-size:13px; font-weight:650; }
.breadcrumb a:hover { color:var(--blue); }
.article-head { max-width:900px; padding:72px 0 54px; }
.category { margin:0 0 18px; color:var(--blue); font-size:13px; font-weight:820; letter-spacing:.12em; }
h1 { margin:0; font-size:clamp(40px,4.8vw,60px); line-height:1.08; font-weight:690; letter-spacing:-.065em; }
.deck { max-width:760px; margin:26px 0 0; color:var(--muted); font-size:18px; line-height:1.7; }
.byline { display:flex; flex-wrap:wrap; gap:10px 18px; margin-top:28px; color:#87909D; font-size:12px; font-weight:660; }
.cover { min-height:430px; position:relative; display:flex; align-items:end; overflow:hidden; border:1px solid var(--line); border-radius:30px; padding:34px; background:linear-gradient(rgba(20,27,38,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(20,27,38,.04) 1px,transparent 1px),#F4F6F8; background-size:42px 42px; }
.cover::before { content:""; position:absolute; width:410px; height:410px; right:8%; top:-24%; border:1px solid rgba(37,107,255,.22); border-radius:50%; }
.cover-number { position:relative; z-index:2; font-size:118px; line-height:.8; font-weight:250; letter-spacing:-.09em; }
.cover-label { position:absolute; z-index:2; right:34px; bottom:34px; color:#737B88; font-size:12px; font-weight:780; letter-spacing:.12em; }
.article-layout { display:grid; grid-template-columns:minmax(0,760px) 250px; justify-content:space-between; gap:70px; padding:88px 0 110px; }
.article-body { min-width:0; }
.summary { margin-bottom:70px; padding:30px 32px; border-left:4px solid var(--blue); border-radius:0 18px 18px 0; background:#F3F6FC; }
.summary strong { display:block; margin-bottom:10px; font-size:15px; }
.summary p { margin:0; color:#4E5765; font-size:17px; line-height:1.75; }
.article-section { margin-top:74px; scroll-margin-top:110px; }
.article-section:first-of-type { margin-top:0; }
.section-no { margin:0 0 12px; color:var(--blue); font-size:12px; font-weight:820; letter-spacing:.15em; }
h2 { margin:0 0 24px; font-size:34px; line-height:1.25; font-weight:710; letter-spacing:-.05em; }
.article-body p { margin:0 0 20px; color:#3F4753; font-size:17px; line-height:1.9; }
.check-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:12px; margin-top:30px; }
.check-card { padding:23px; border:1px solid var(--line); border-radius:18px; background:#fff; }
.check-card span { display:block; margin-bottom:8px; color:var(--blue); font-size:11px; font-weight:820; letter-spacing:.08em; }
.check-card strong { display:block; margin-bottom:9px; font-size:17px; }
.check-card p { margin:0; color:var(--muted); font-size:14px; line-height:1.65; }
.steps { display:grid; gap:14px; margin:28px 0 0; padding:0; list-style:none; counter-reset:steps; }
.steps li { counter-increment:steps; display:grid; grid-template-columns:42px 1fr; gap:16px; padding:20px 22px; border:1px solid var(--line); border-radius:18px; color:#46505D; font-size:15px; line-height:1.65; }
.steps li::before { content:counter(steps); width:34px; height:34px; display:grid; place-items:center; border-radius:50%; background:#111; color:#fff; font-size:12px; font-weight:780; }
.solution { margin-top:28px; overflow:hidden; border:1px solid var(--line); border-radius:20px; }
.solution-row { display:grid; grid-template-columns:150px 1fr; gap:24px; padding:24px 26px; border-bottom:1px solid var(--line); }
.solution-row:last-child { border-bottom:0; }
.solution-row strong { font-size:15px; }
.solution-row p { margin:0; color:var(--muted); font-size:14px; line-height:1.7; }
.caution { margin-top:70px; padding:26px; border:1px solid #DCE3EE; border-radius:18px; background:#FAFBFD; }
.caution strong { display:block; margin-bottom:8px; font-size:15px; }
.caution p { margin:0; color:var(--muted); font-size:14px; line-height:1.7; }
.toc { position:sticky; top:114px; align-self:start; padding:22px; border:1px solid var(--line); border-radius:18px; background:#fff; }
.toc strong { display:block; margin-bottom:14px; font-size:13px; }
.toc a { display:block; padding:8px 0; color:#727B88; font-size:13px; line-height:1.4; }
.toc a:hover { color:var(--blue); }
.draft-note { margin-top:18px; color:#9AA1AC; font-size:11px; line-height:1.6; }
.related { padding:78px 0 94px; border-top:1px solid var(--line); background:var(--surface); }
.related h2 { margin-bottom:26px; }
.related-grid { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:16px; }
.related-card { padding:25px; border:1px solid var(--line); border-radius:20px; background:#fff; }
.related-card span { color:var(--blue); font-size:11px; font-weight:800; }
.related-card h3 { margin:12px 0 0; font-size:19px; line-height:1.45; }
footer { border-top:1px solid var(--line); padding:34px 0 38px; color:#8A9099; font-size:13px; }
.footer-row { display:flex; flex-direction:column; gap:12px; }
.copyright { display:flex; align-items:center; gap:18px; color:#7B8290; }
.footer-logo { display:block; width:168px; height:auto; opacity:.62; }
.business { color:#8A91A0; font-size:11.5px; line-height:1.6; }
@media (max-width:900px) { .wrap { width:calc(100% - 40px); } .nav { grid-template-columns:1fr auto; grid-template-rows:auto auto; padding:12px 0; } body > header { height:auto; } .menu { grid-column:1/-1; grid-row:2; justify-content:flex-start; overflow-x:auto; gap:30px; padding:8px 0 2px; } .lang { grid-column:2; grid-row:1; } .article-layout { grid-template-columns:1fr; gap:40px; } .toc { position:static; grid-row:1; } }
@media (max-width:640px) { .wrap { width:calc(100% - 32px); } .logo { width:136px; } .lang span,.lang a { padding:5px 7px; font-size:10px; } .article-head { padding:52px 0 40px; } h1 { font-size:38px; } .deck { font-size:17px; } .cover { min-height:300px; border-radius:22px; } .cover-number { font-size:100px; } .article-layout { padding:62px 0 76px; } .check-grid,.related-grid { grid-template-columns:1fr; } .solution-row { grid-template-columns:1fr; gap:10px; } h2 { font-size:29px; } html[lang="ja"] .article-head h1 { font-size:34px; line-height:1.22; letter-spacing:-.04em; } html[lang="ja"] .toc a { white-space:normal; } }


/* V17 Eyewear Lab previous / next notes */
.lab-article-nav{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:14px;
  margin:54px 0 72px;
  padding-top:30px;
  border-top:1px solid #e4e8ee;
}
.lab-article-nav-card{
  display:flex;
  min-height:132px;
  flex-direction:column;
  justify-content:space-between;
  gap:18px;
  padding:22px 24px;
  border:1px solid #e0e5eb;
  border-radius:18px;
  background:#fff;
  color:#111;
  text-decoration:none;
  transition:border-color .18s ease,transform .18s ease;
}
.lab-article-nav-card:hover{
  border-color:#bfc9d8;
  transform:translateY(-1px);
}
.lab-article-nav-card.next{text-align:right}
.lab-article-nav-label{
  color:#256bff;
  font-size:12px;
  font-weight:800;
  letter-spacing:.02em;
}
.lab-article-nav-card strong{
  color:#171a1f;
  font-size:16px;
  line-height:1.5;
  letter-spacing:-.02em;
}
.lab-article-nav-number{color:#98a1ad;margin-right:5px}
.lab-article-nav-card:only-child{grid-column:span 2;max-width:50%}
.lab-article-nav-card.next:only-child{justify-self:end;width:100%}
@media(max-width:680px){
  .lab-article-nav{grid-template-columns:1fr;margin:44px 0 58px}
  .lab-article-nav-card{min-height:112px;padding:19px 20px}
  .lab-article-nav-card.next{text-align:left}
  .lab-article-nav-card:only-child{grid-column:auto;max-width:none}
  .lab-article-nav-card.next:only-child{justify-self:stretch;width:auto}
}


/* V19 — final Eyewear Lab article navigation */
main .wrap > .lab-article-nav{
  display:grid!important;
  grid-template-columns:repeat(2,minmax(0,1fr))!important;
  gap:16px!important;
  margin:54px 0 72px!important;
  padding-top:28px!important;
  border-top:1px solid #e4e8ee!important;
}
main .wrap > .lab-article-nav .lab-article-nav-card{
  display:flex!important;
  min-height:126px!important;
  flex-direction:column!important;
  justify-content:space-between!important;
  gap:18px!important;
  padding:22px 24px!important;
  border:1px solid #e0e5eb!important;
  border-radius:18px!important;
  background:#fff!important;
  color:#111!important;
  text-decoration:none!important;
}
main .wrap > .lab-article-nav .lab-article-nav-label{
  color:#256bff!important;
  font-size:12px!important;
  font-weight:800!important;
}
main .wrap > .lab-article-nav .lab-article-nav-card strong{
  color:#171a1f!important;
  font-size:16px!important;
  line-height:1.5!important;
}
main .wrap > .lab-article-nav .lab-article-nav-card.next{text-align:right!important}
main .wrap > .lab-article-nav .lab-article-nav-card:only-child{
  grid-column:auto!important;
  width:min(100%,520px)!important;
  max-width:520px!important;
}
main .wrap > .lab-article-nav .lab-article-nav-card.next:only-child{
  justify-self:end!important;
}
main .wrap > .lab-article-nav .lab-article-nav-card.prev:only-child{
  justify-self:start!important;
}
@media(max-width:680px){
  main .wrap > .lab-article-nav{
    grid-template-columns:1fr!important;
    margin:44px 0 58px!important;
  }
  main .wrap > .lab-article-nav .lab-article-nav-card,
  main .wrap > .lab-article-nav .lab-article-nav-card:only-child{
    width:100%!important;
    max-width:none!important;
    justify-self:stretch!important;
    min-height:108px!important;
    text-align:left!important;
  }
}