/* AH Materials — 공통 스타일
   색·글꼴은 여기 :root 에서 한 번에 바꿀 수 있다. */
:root {
  --cobalt: #2448C8;
  --cobalt-hover: #17318F;
  --cobalt-light: #A9B8FF;   /* 어두운 배경 위 라벨 */
  --ink: #14171C;            /* 제목 */
  --body: #3A414B;           /* 본문 */
  --muted: #4C545F;          /* 보조 글자 */
  --line: #C9CED6;
  --line-soft: #E3E6EA;
  --bg-soft: #F4F5F7;
  --th: #EEF2FD;
  --dark: #0F1216;
  --dark-2: #1C2129;
  --dark-line: #2A303A;
  --dark-text: #C9CED6;
  --sans: 'IBM Plex Sans KR', 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;
  --wrap: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: #FFFFFF;
  color: var(--body);
  font-family: var(--sans);
  font-size: 22px;
  line-height: 1.7;
  word-break: keep-all;
  overflow-wrap: break-word;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--cobalt); }
a:hover { color: var(--cobalt-hover); }
h1, h2, h3, h4 { color: var(--ink); margin: 0; line-height: 1.3; font-weight: 700; }
p { margin: 0; }
ul { margin: 0; padding: 0; }
:focus-visible { outline: 3px solid var(--cobalt); outline-offset: 2px; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
@media (max-width: 600px) { .wrap { padding: 0 16px; } }

.skip-link {
  position: absolute; left: 8px; top: -60px; z-index: 100;
  background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 6px;
}
.skip-link:focus { top: 8px; color: #fff; }

/* ---------- 머리글 ---------- */
.site-header { background: #fff; border-bottom: 1px solid var(--line-soft); position: sticky; top: 0; z-index: 50; }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.logo { display: flex; flex-direction: column; text-decoration: none; color: var(--ink); line-height: 1.25; }
.logo:hover { color: var(--ink); }
.logo b { font-size: 29px; letter-spacing: 0.01em; }
.logo span { font-size: 17px; color: var(--muted); }

.nav { display: flex; align-items: center; gap: 2px; }
.nav a { color: var(--ink); text-decoration: none; padding: 10px 12px; font-size: 21px; border-radius: 4px; }
.nav a:hover { color: var(--cobalt); }
.nav a[aria-current="page"] { color: var(--cobalt); box-shadow: inset 0 -2px 0 var(--cobalt); border-radius: 0; }
.nav .lang { font-family: var(--mono); font-size: 20px; color: var(--muted); }
.nav .btn { margin-left: 8px; }
.nav a.btn-primary, .nav a.btn-primary:hover { color: #fff; }
.nav-toggle { display: none; }

@media (max-width: 1100px) {
  .nav-toggle {
    display: inline-flex; align-items: center; gap: 8px;
    font: inherit; font-size: 21px; font-weight: 600; color: var(--ink);
    background: none; border: 1px solid var(--line); border-radius: 6px; padding: 8px 14px; cursor: pointer;
  }
  .nav-toggle .bars, .nav-toggle .bars::before, .nav-toggle .bars::after {
    display: block; width: 16px; height: 2px; background: var(--ink); position: relative; content: '';
  }
  .nav-toggle .bars::before { position: absolute; top: -5px; }
  .nav-toggle .bars::after { position: absolute; top: 5px; }
  .site-header .wrap { flex-wrap: wrap; }
  .nav { display: none; width: 100%; flex-direction: column; align-items: stretch; padding: 4px 0 16px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 4px; border-bottom: 1px solid var(--line-soft); }
  .nav a[aria-current="page"] { box-shadow: none; font-weight: 600; }
  .nav .btn { margin: 12px 0 0; text-align: center; }
  .no-js .nav { display: flex; }
}

/* ---------- 버튼 ---------- */
.btn {
  display: inline-block; text-decoration: none; font-weight: 600; font-size: 21px;
  padding: 12px 20px; border-radius: 6px; border: 1px solid transparent; line-height: 1.4; text-align: center;
}
.btn-primary { background: var(--cobalt); color: #fff; }
.btn-primary:hover { background: var(--cobalt-hover); color: #fff; }
.btn-white { background: #fff; color: var(--dark); }
.btn-white:hover { background: var(--line-soft); color: var(--dark); }
.btn-ghost-dark { color: #fff; border-color: #5A626D; }
.btn-ghost-dark:hover { color: #fff; border-color: #fff; }
.btn-outline { color: var(--ink); border-color: var(--line); background: #fff; }
.btn-outline:hover { color: var(--cobalt); border-color: var(--cobalt); }
.btn-dark { background: var(--dark); color: #fff; }
.btn-dark:hover { background: #2A303A; color: #fff; }
.btn-row { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- 공통 요소 ---------- */
.label {
  font-family: var(--mono); font-size: 18px; font-weight: 500; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--cobalt); margin: 0;
}
.section-head .label { color: var(--cobalt); }
.on-dark .label { color: var(--cobalt-light); }
.chip {
  display: inline-block; font-family: var(--mono); font-size: 18px; font-weight: 500; color: var(--ink);
  border: 1px solid var(--line); border-radius: 4px; padding: 1px 8px; line-height: 1.6; white-space: nowrap;
}
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.more { font-weight: 600; text-decoration: none; font-size: 21px; }
.more::after { content: ' →'; }

.section { padding: 88px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { display: flex; flex-direction: column; gap: 12px; max-width: 760px; margin-bottom: 40px; }
.section-head h2 { font-size: 46px; }
.section-head p { font-size: 23px; color: var(--muted); }
@media (max-width: 600px) {
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 37px; }
}

.on-dark { background: var(--dark); color: var(--dark-text); }
.on-dark h1, .on-dark h2, .on-dark h3 { color: #fff; }
.on-dark a:not(.btn) { color: #fff; }

/* ---------- 홈: 히어로 ---------- */
.hero .wrap { display: flex; flex-wrap: wrap; gap: 48px; align-items: center; padding-top: 88px; padding-bottom: 88px; }
.hero-text { flex: 1.4 1 560px; display: flex; flex-direction: column; gap: 22px; }
.hero h1 { font-size: 56px; line-height: 1.25; }
.hero-text > p:not(.label) { font-size: 24px; line-height: 1.75; max-width: 580px; }
.hero-text .btn-row { padding-top: 6px; }
.hero-figure { flex: 1 1 400px; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.hero-figure img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 6px; background: #fff; }
.hero-figure figcaption { grid-column: 1 / -1; font-size: 18px; color: #AEB6C2; }
@media (max-width: 600px) {
  .hero .wrap { padding-top: 56px; padding-bottom: 56px; gap: 36px; }
  .hero h1 { font-size: 44px; }
  .hero-text > p:not(.label) { font-size: 22px; }
}

.stats { border-top: 1px solid var(--dark-line); }
.stats .wrap { display: flex; flex-wrap: wrap; gap: 24px 64px; padding-top: 28px; padding-bottom: 28px; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat b { font-size: 42px; color: #fff; line-height: 1.3; }
.stat span { font-size: 20px; color: #AEB6C2; }

/* ---------- 홈: 카테고리 카드 ---------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 20px; }
@media (max-width: 360px) { .cards { grid-template-columns: 1fr; } }
.card {
  display: flex; flex-direction: column; gap: 10px; padding: 28px;
  border: 1px solid var(--line-soft); border-radius: 8px; text-decoration: none; color: var(--body);
}
a.card:hover { border-color: var(--cobalt); color: var(--body); }
.card .num { font-family: var(--mono); font-size: 18px; color: var(--cobalt); }
.card h3 { font-size: 28px; }
.card .en { font-family: var(--mono); font-size: 17px; color: var(--muted); margin-top: -6px; }
.card p { font-size: 21px; color: var(--muted); line-height: 1.65; }
.card .chips { margin-top: auto; padding-top: 6px; }
.card-dark { background: var(--dark); border-color: var(--dark); color: var(--dark-text); justify-content: space-between; gap: 20px; }
.card-dark h3 { color: #fff; line-height: 1.45; }

/* ---------- 홈: 기술 ---------- */
.split { display: flex; flex-wrap: wrap; gap: 56px; align-items: center; }
.split > * { flex: 1 1 440px; min-width: 0; }
.tech-list { list-style: none; display: flex; flex-direction: column; }
.tech-list li { display: flex; flex-direction: column; gap: 4px; padding: 20px 0; border-bottom: 1px solid #DADDE2; }
.tech-list li:first-child { padding-top: 0; }
.tech-list li:last-child { border-bottom: 0; }
.tech-list b { font-size: 24px; color: var(--ink); }
.tech-list span { font-size: 21px; color: var(--muted); }
.figure-box { margin: 0; background: #fff; border: 1px solid var(--line-soft); border-radius: 8px; padding: 24px; }
.figure-box figcaption { font-size: 18px; color: var(--muted); margin-top: 12px; }

/* ---------- 목록 (과제·소식) ---------- */
.rows { list-style: none; border-top: 1px solid var(--line-soft); }
.rows li { display: flex; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line-soft); font-size: 21px; line-height: 1.55; color: var(--ink); }
.rows .date { flex: 0 0 100px; font-family: var(--mono); font-size: 18px; color: var(--muted); padding-top: 2px; }
.rows a { color: var(--ink); text-decoration: none; }
.rows a:hover { color: var(--cobalt); text-decoration: underline; }
.list-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.list-head h2 { font-size: 31px; }

/* ---------- 문의 띠 ---------- */
.cta .wrap { display: flex; flex-wrap: wrap; gap: 32px; align-items: center; justify-content: space-between; padding-top: 72px; padding-bottom: 72px; }
.cta h2 { font-size: 42px; margin-bottom: 10px; }
.cta address { font-style: normal; font-size: 21px; margin-top: 16px; line-height: 1.7; }
@media (max-width: 600px) { .cta h2 { font-size: 34px; } }

/* ---------- 바닥글 ---------- */
.site-footer { background: #0A0C0F; color: #AEB6C2; font-size: 18px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; gap: 12px 32px; justify-content: space-between; padding-top: 32px; padding-bottom: 32px; }
.site-footer a { color: #DDE1E7; }
.site-footer address { font-style: normal; }

/* ---------- 하위 페이지 머리 ---------- */
.page-head { background: var(--bg-soft); }
.page-head .wrap { display: flex; flex-wrap: wrap; gap: 24px; align-items: flex-end; justify-content: space-between; padding-top: 64px; padding-bottom: 56px; }
.page-head .text { display: flex; flex-direction: column; gap: 12px; max-width: 760px; }
.page-head h1 { font-size: 55px; }
.page-head p:not(.label) { font-size: 23px; color: var(--muted); }
@media (max-width: 600px) { .page-head h1 { font-size: 42px; } .page-head .wrap { padding-top: 44px; padding-bottom: 40px; } }
.crumbs { font-size: 20px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--cobalt); }

/* ---------- 표 (카탈로그 스타일: 가로줄만) ---------- */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.spec { width: 100%; border-collapse: collapse; font-size: 21px; border-top: 2px solid var(--ink); }
.spec th, .spec td { padding: 12px 14px; border-bottom: 1px solid var(--line-soft); text-align: left; vertical-align: top; }
.spec thead th { background: var(--th); color: var(--ink); font-weight: 600; font-size: 20px; border-bottom: 1px solid var(--line); white-space: nowrap; }
.spec tbody th { font-weight: 500; color: var(--ink); }
.spec .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.spec .unit { font-family: var(--mono); font-size: 18px; color: var(--muted); white-space: nowrap; }
.spec .best { font-weight: 700; color: var(--ink); }
.spec caption { caption-side: bottom; text-align: left; font-size: 18px; color: var(--muted); padding-top: 10px; }
.spec .models { display: flex; flex-wrap: wrap; gap: 4px; }
.spec a { font-weight: 600; text-decoration: none; }
.spec a:hover { text-decoration: underline; }
@media (max-width: 600px) { .spec th, .spec td { padding: 10px 8px; font-size: 20px; } }

.spec .en-sub { display: block; font-size: 17px; font-weight: 400; color: var(--muted); }
.spec tbody th .unit { font-size: 17px; }

.note { font-size: 18px; color: var(--muted); }
.table-note { margin-top: 10px; }

/* ---------- 제품 목록: 카테고리 ---------- */
.cat { padding: 40px 0; border-top: 1px solid var(--line-soft); display: grid; grid-template-columns: 320px 1fr; gap: 32px; }
.cat:last-child { border-bottom: 1px solid var(--line-soft); }
.cat-head { display: flex; flex-direction: column; gap: 6px; }
.cat-head .num { font-family: var(--mono); font-size: 18px; color: var(--cobalt); }
.cat-head h3 { font-size: 31px; }
.cat-head .en { font-family: var(--mono); font-size: 17px; color: var(--muted); }
.prod-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 16px; }
.prod {
  display: flex; gap: 16px; padding: 18px; border: 1px solid var(--line-soft); border-radius: 8px;
  text-decoration: none; color: var(--body);
}
.prod:hover { border-color: var(--cobalt); color: var(--body); }
.prod img { width: 84px; height: 84px; object-fit: contain; background: #fff; flex: 0 0 84px; }
.prod .t { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.prod h4 { font-size: 23px; }
.prod p { font-size: 20px; color: var(--muted); line-height: 1.55; }
@media (max-width: 860px) { .cat { grid-template-columns: 1fr; gap: 20px; padding: 32px 0; } }

/* ---------- 제품 상세 ---------- */
.prod-hero { display: grid; grid-template-columns: 1fr 220px; gap: 48px; align-items: start; }
.prod-hero .text { display: flex; flex-direction: column; gap: 18px; }
.prod-hero h1 { font-size: 55px; }
.prod-hero .lead { font-size: 24px; color: var(--body); }
.prod-hero figure { margin: 0; background: #fff; border: 1px solid var(--line-soft); border-radius: 8px; padding: 20px; }
.prod-hero figure img { margin: 0 auto; max-height: 300px; width: auto; }
@media (max-width: 760px) {
  .prod-hero { grid-template-columns: 1fr; gap: 28px; }
  .prod-hero h1 { font-size: 42px; }
  .prod-hero figure { max-width: 160px; padding: 12px; }
  .prod-hero figure img { max-height: 200px; }
}
.facts { display: grid; grid-template-columns: 1fr 1fr; gap: 0 40px; }
.facts dl { margin: 0; }
.facts dt { font-family: var(--mono); font-size: 17px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--cobalt); margin-bottom: 8px; }
.facts dd { margin: 0; }
.facts ul { padding-left: 1.2em; }
.facts li { margin: 2px 0; }
@media (max-width: 760px) { .facts { grid-template-columns: 1fr; gap: 24px; } }

.block { padding: 56px 0; border-top: 1px solid var(--line-soft); }
.block > h2 { font-size: 35px; margin-bottom: 8px; }
.block > .sub { color: var(--muted); margin-bottom: 24px; }
@media (max-width: 600px) { .block { padding: 44px 0; } .block > h2 { font-size: 31px; } }

.figs { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
.fig { margin: 0; display: flex; flex-direction: column; gap: 12px; }
.fig img { border: 1px solid var(--line-soft); border-radius: 6px; background: #fff; padding: 12px; width: 100%; }
.fig figcaption { font-size: 20px; color: var(--muted); line-height: 1.6; }
.fig figcaption b { color: var(--ink); font-weight: 600; }

.inquiry-box {
  display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between;
  background: var(--bg-soft); border-radius: 8px; padding: 28px;
}
.inquiry-box h2 { font-size: 31px; margin-bottom: 4px; }
.inquiry-box p { color: var(--muted); font-size: 21px; }

.siblings { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.siblings a {
  display: inline-block; padding: 8px 14px; border: 1px solid var(--line-soft); border-radius: 6px;
  text-decoration: none; color: var(--ink); font-size: 20px;
}
.siblings a:hover { border-color: var(--cobalt); color: var(--cobalt); }

/* ---------- 휴대폰: 본문 22px은 너무 커서 19px로 ---------- */
@media (max-width: 600px) {
  body { font-size: 19px; }
  .hero h1 { font-size: 36px; }
  .hero-text > p:not(.label) { font-size: 19px; }
  .section-head h2 { font-size: 30px; }
  .section-head p, .page-head p:not(.label), .prod-hero .lead { font-size: 19px; }
  .page-head h1, .prod-hero h1 { font-size: 34px; }
  .cta h2 { font-size: 28px; }
  .stat b { font-size: 32px; }
  .card h3 { font-size: 24px; }
  .card p, .tech-list span, .rows li, .prod p { font-size: 18px; }
  .spec th, .spec td { font-size: 17px; }
  .cards, .prod-list { grid-template-columns: 1fr; }
}

/* ---------- 하위 페이지 공통 ---------- */
.prose { max-width: 820px; display: flex; flex-direction: column; gap: 18px; }
.prose h2 { font-size: 34px; margin-top: 8px; }
.two-col { display: grid; grid-template-columns: 320px 1fr; gap: 40px; }
.two-col > h2 { font-size: 34px; }
@media (max-width: 860px) { .two-col { grid-template-columns: 1fr; gap: 20px; } }
.kv { width: 100%; border-collapse: collapse; border-top: 2px solid var(--ink); }
.kv th, .kv td { text-align: left; vertical-align: top; padding: 14px 12px; border-bottom: 1px solid var(--line-soft); }
.kv th { width: 30%; color: var(--ink); font-weight: 600; white-space: nowrap; }
@media (max-width: 600px) { .kv th { width: auto; white-space: normal; } .kv th, .kv td { display: block; padding: 6px 0; } .kv th { padding-top: 14px; border-bottom: 0; } }
.tag { display: inline-block; font-family: var(--mono); font-size: 16px; padding: 0 8px; border-radius: 4px; background: var(--th); color: var(--cobalt-hover); white-space: nowrap; }
.todo { background: #FFF4CC; color: #5C4400; padding: 0 4px; border-radius: 3px; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; } }
.big-mail { color: var(--ink); font-size: 30px; font-weight: 700; word-break: break-all; }
@media (max-width: 600px) { .big-mail { color: var(--ink); font-size: 24px; } }
.map { width: 100%; aspect-ratio: 4 / 3; border: 1px solid var(--line-soft); border-radius: 8px; }
.checklist { padding-left: 1.2em; }
.checklist li { margin: 4px 0; }