/* 동도조명 홈페이지 — 밝고 단정하게(흰 바탕 · 검정 · 회색) */
:root {
  --ink: #191919;
  --ink-2: #4d4d4d;
  --ink-3: #808080;
  --line: #e6e6e6;
  --line-2: #d4d4d4;
  --bg: #ffffff;
  --bg-soft: #f6f6f6;
  --photo: #6d6e72;
  --brand: #e9a23b;
  --todo-bg: #fff3d6;
  --todo-line: #e9a23b;
  --radius: 12px;
  --wrap: 1200px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "맑은 고딕", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  word-break: keep-all;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible, label:focus-within {
  outline: 2px solid var(--ink);
  outline-offset: 2px;
}
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* 채워 넣을 자리 */
.todo {
  background: var(--todo-bg);
  border: 1px dashed var(--todo-line);
  border-radius: 4px;
  padding: 0 6px;
  color: #7a4d0a;
  font-weight: 500;
  white-space: nowrap;
}

/* 머리글 */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255, 255, 255, .97);
  backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; gap: 32px; height: 72px; }
.logo { display: flex; align-items: center; gap: 9px; flex-shrink: 0; }
.logo img { width: auto; height: 38px; }
.logo b { font-size: 22px; font-weight: 800; letter-spacing: -.03em; }
.logo span { font-size: 11px; letter-spacing: .2em; color: var(--ink-3); font-weight: 600; }
.nav { display: flex; gap: 36px; margin-left: auto; }
.nav a { position: relative; padding: 24px 0; font-weight: 600; font-size: 16px; color: var(--ink-2); }
.nav a:hover { color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); }
.nav a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--ink); }
.header-search { display: flex; align-items: center; border: 1px solid var(--line-2); border-radius: 4px; padding: 0 6px 0 12px; height: 38px; background: #fff; }
.header-search input { border: 0; background: transparent; font: inherit; font-size: 14px; width: 150px; outline: none; }
.header-search button { border: 0; background: none; cursor: pointer; padding: 6px; color: var(--ink-2); }
.menu-btn { display: none; margin-left: auto; border: 1px solid var(--line-2); background: #fff; border-radius: 4px; height: 38px; padding: 0 12px; font: inherit; font-weight: 600; cursor: pointer; }

/* 버튼 */
.btns { display: flex; flex-wrap: wrap; gap: 8px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 48px; padding: 0 24px;
  border-radius: 4px; font-weight: 600; font-size: 15px; border: 1px solid transparent; cursor: pointer;
}
.btn-dark { background: var(--ink); color: #fff; }
.btn-dark:hover { background: #3a3a3a; }
.btn-ghost { border-color: var(--line-2); color: var(--ink); background: #fff; }
.btn-ghost:hover { border-color: var(--ink); }

/* 첫 화면 슬라이드 */
.hero { border-bottom: 1px solid var(--line); }
.hero .wrap { padding-top: 56px; padding-bottom: 48px; }
.slides { position: relative; }
.slide {
  display: grid; grid-template-columns: 5fr 7fr; gap: 56px; align-items: center;
  position: absolute; inset: 0; opacity: 0; visibility: hidden; transition: opacity .7s ease, visibility .7s;
}
.slide.is-active { position: relative; opacity: 1; visibility: visible; }
.eyebrow { display: block; font-size: 14px; font-weight: 700; letter-spacing: .02em; color: var(--ink-3); margin-bottom: 14px; }
.slide h1, .slide h2 { font-size: 44px; line-height: 1.25; letter-spacing: -.035em; margin: 0 0 18px; font-weight: 800; }
.slide p { color: var(--ink-2); font-size: 17px; margin: 0 0 32px; }
.slide-img { background: var(--photo); border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 10; }
.slide-img img { width: 100%; height: 100%; object-fit: cover; transform: scale(1.03); transition: transform 6s ease; }
.slide.is-active .slide-img img { transform: scale(1); }
.hero-ctrl { display: flex; align-items: center; gap: 14px; margin-top: 32px; }
.hero-ctrl button {
  width: 40px; height: 40px; border: 1px solid var(--line-2); border-radius: 50%; background: #fff; cursor: pointer;
  display: grid; place-items: center; color: var(--ink);
}
.hero-ctrl button:hover { border-color: var(--ink); }
.counter { font-size: 14px; color: var(--ink-3); font-variant-numeric: tabular-nums; min-width: 56px; text-align: center; }
.counter b { color: var(--ink); }
.progress { flex: 1; max-width: 240px; height: 2px; background: var(--line); position: relative; overflow: hidden; }
.progress i { position: absolute; left: 0; top: 0; bottom: 0; width: 0; background: var(--ink); }
.progress i.run { animation: progress 6s linear forwards; }
@keyframes progress { to { width: 100%; } }
@media (prefers-reduced-motion: reduce) {
  .slide, .slide-img img { transition: none; }
  .progress i.run { animation: none; }
}

/* 구역 */
.section { padding: 80px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 20px; margin-bottom: 32px; }
.section-head h2 { font-size: 30px; font-weight: 800; letter-spacing: -.03em; margin: 0; line-height: 1.3; }
.section-head p { margin: 6px 0 0; color: var(--ink-3); }
.more { font-weight: 600; font-size: 15px; color: var(--ink-2); white-space: nowrap; border-bottom: 1px solid var(--line-2); padding-bottom: 2px; }
.more:hover { color: var(--ink); border-color: var(--ink); }

/* 분류 */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px 20px; }
.cat-card .cat-img { background: var(--photo); border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 3; }
.cat-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.cat-card:hover img { transform: scale(1.04); }
.cat-meta { display: flex; justify-content: space-between; align-items: baseline; padding: 14px 2px 0; }
.cat-meta b { font-size: 17px; letter-spacing: -.02em; }
.cat-meta span { font-size: 14px; color: var(--ink-3); }
.cat-card:hover .cat-meta b { text-decoration: underline; text-underline-offset: 4px; }

/* 특징 */
.points { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.point { border-top: 2px solid var(--ink); padding-top: 20px; }
.point .num { font-size: 13px; font-weight: 700; color: var(--ink-3); letter-spacing: .04em; }
.point h3 { margin: 6px 0 8px; font-size: 19px; letter-spacing: -.02em; }
.point p { margin: 0; color: var(--ink-2); font-size: 15px; }

/* 안내 띠 */
.band { border: 1px solid var(--line); border-radius: var(--radius); padding: 40px 44px; display: flex; align-items: center; justify-content: space-between; gap: 24px; background: #fff; }
.band h2 { margin: 0 0 6px; font-size: 26px; font-weight: 800; letter-spacing: -.03em; }
.band p { margin: 0; color: var(--ink-2); }
.band .tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.band .tags span { border: 1px solid var(--line-2); border-radius: 999px; padding: 3px 12px; font-size: 13px; color: var(--ink-2); }

/* 하위 페이지 제목 */
.page-title { border-bottom: 1px solid var(--line); padding: 48px 0 40px; }
.page-title h1 { margin: 0; font-size: 36px; font-weight: 800; letter-spacing: -.03em; }
.page-title p { margin: 8px 0 0; color: var(--ink-3); }
.crumbs { font-size: 13px; color: var(--ink-3); margin-bottom: 12px; }
.crumbs a:hover { color: var(--ink); }
.crumbs span { margin: 0 6px; }

/* 제품 목록 */
.cat-tabs { display: flex; gap: 0; flex-wrap: wrap; margin: 32px 0 20px; border-bottom: 1px solid var(--line); }
.cat-tabs button {
  border: 0; background: none; padding: 12px 16px; margin-bottom: -1px;
  font: inherit; font-size: 15px; font-weight: 600; color: var(--ink-3); cursor: pointer; border-bottom: 2px solid transparent;
}
.cat-tabs button:hover { color: var(--ink); }
.cat-tabs button[aria-pressed="true"] { color: var(--ink); border-bottom-color: var(--ink); }
.cat-tabs button small { font-weight: 500; margin-left: 4px; color: var(--ink-3); }
.filters { border: 1px solid var(--line); border-radius: var(--radius); padding: 6px 24px; margin-bottom: 20px; }
.filter-row { display: grid; grid-template-columns: 120px 1fr; gap: 12px; padding: 12px 0; border-bottom: 1px solid var(--line); align-items: center; }
.filter-row:last-child { border-bottom: 0; }
.filter-row > b { font-size: 14px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips label {
  display: inline-flex; align-items: center; gap: 6px; background: #fff; border: 1px solid var(--line-2);
  border-radius: 4px; padding: 4px 10px; font-size: 14px; cursor: pointer; user-select: none; color: var(--ink-2);
}
.chips input { accent-color: var(--ink); margin: 0; }
.chips label:has(input:checked) { border-color: var(--ink); color: var(--ink); font-weight: 600; }
.search-box { display: flex; gap: 8px; }
.search-box input { flex: 1; max-width: 360px; height: 38px; border: 1px solid var(--line-2); border-radius: 4px; padding: 0 12px; font: inherit; font-size: 14px; }
.result-bar { display: flex; justify-content: space-between; align-items: center; margin: 4px 0 18px; font-size: 14px; color: var(--ink-3); }
.result-bar b { color: var(--ink); }
.reset { border: 0; background: none; font: inherit; font-size: 14px; color: var(--ink-2); text-decoration: underline; cursor: pointer; }
.empty { display: none; padding: 60px 0; text-align: center; color: var(--ink-3); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 32px 20px; }
.card { display: flex; flex-direction: column; }
.card[hidden] { display: none; }
.card-img { background: var(--photo); aspect-ratio: 4 / 3; overflow: hidden; border-radius: var(--radius); }
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.card-img.wide img { object-fit: contain; }
.card:hover .card-img img { transform: scale(1.04); }
.card-body { padding: 14px 2px 0; }
.card .code { display: block; font-size: 17px; font-weight: 700; letter-spacing: -.01em; }
.card:hover .code { text-decoration: underline; text-underline-offset: 4px; }
.card .name { display: block; color: var(--ink-2); font-size: 14px; margin-bottom: 8px; }
.mini { margin: 0; display: grid; gap: 2px; font-size: 13px; }
.mini div { display: flex; gap: 8px; }
.mini dt { color: var(--ink-3); width: 30px; flex-shrink: 0; }
.mini dd { margin: 0; color: var(--ink-2); }
.badge { display: inline-block; font-size: 12px; font-weight: 600; border: 1px solid var(--line-2); border-radius: 3px; padding: 0 6px; color: var(--ink-2); margin-right: 6px; }

/* 제품 상세 */
.detail { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; padding: 32px 0 72px; }
.gallery-main { background: var(--photo); border-radius: var(--radius); overflow: hidden; aspect-ratio: 4 / 3; position: relative; }
.gallery-main img { width: 100%; height: 100%; object-fit: contain; }
.gallery-main .variant { position: absolute; left: 14px; top: 14px; background: #fff; color: var(--ink); font-size: 13px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.thumbs { display: flex; gap: 8px; margin-top: 12px; }
.thumbs button { border: 1px solid var(--line-2); border-radius: 8px; padding: 0; overflow: hidden; width: 92px; background: #fff; cursor: pointer; }
.thumbs button[aria-pressed="true"] { border: 2px solid var(--ink); }
.thumbs img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--photo); }
.thumbs span { display: block; color: var(--ink-2); font-size: 12px; padding: 3px 0; }
.info .cat { display: inline-block; font-size: 14px; font-weight: 600; color: var(--ink-3); margin-bottom: 6px; }
.info h1 { margin: 0; font-size: 40px; font-weight: 800; letter-spacing: -.03em; line-height: 1.2; }
.info .sub { font-size: 18px; color: var(--ink-2); margin: 6px 0 24px; }
.spec { width: 100%; border-collapse: collapse; font-size: 15px; margin-bottom: 28px; border-top: 2px solid var(--ink); }
.spec th, .spec td { text-align: left; padding: 12px 4px; border-bottom: 1px solid var(--line); vertical-align: top; }
.spec th { width: 110px; color: var(--ink-3); font-weight: 600; }
.note-box { border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; font-size: 14px; color: var(--ink-2); margin-top: 20px; }
.note-box b { color: var(--ink); }

/* 일반 글 */
.prose { max-width: 760px; }
.prose h2 { font-size: 24px; font-weight: 800; margin: 0 0 14px; letter-spacing: -.03em; }
.prose p { color: var(--ink-2); margin: 0 0 14px; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.info-table { width: 100%; border-collapse: collapse; font-size: 15px; border-top: 2px solid var(--ink); }
.info-table th, .info-table td { text-align: left; padding: 13px 6px; border-bottom: 1px solid var(--line); }
.info-table th { width: 130px; color: var(--ink-3); font-weight: 600; }
.history { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--ink); }
.history li { display: grid; grid-template-columns: 100px 1fr; gap: 12px; padding: 13px 6px; border-bottom: 1px solid var(--line); font-size: 15px; }
.history b { font-weight: 700; }
.history span { color: var(--ink-2); }
.cert { display: grid; grid-template-columns: 150px 1fr; gap: 24px; align-items: start; }
.cert img { border: 1px solid var(--line-2); }
.cert dl { margin: 0; font-size: 15px; }
.cert dt { color: var(--ink-3); font-weight: 600; font-size: 13px; }
.cert dd { margin: 0 0 10px; color: var(--ink-2); }
.map-box { background: var(--bg-soft); border-radius: var(--radius); aspect-ratio: 21 / 9; overflow: hidden; }
.map-box iframe { display: block; width: 100%; height: 100%; border: 0; }
.map-links { margin-top: 16px; }
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; counter-reset: step; padding: 0; margin: 0; list-style: none; }
.steps li { border-top: 2px solid var(--ink); padding-top: 18px; counter-increment: step; }
.steps li::before { content: "0" counter(step); display: block; font-weight: 800; color: var(--ink-3); font-size: 14px; margin-bottom: 6px; }
.steps b { display: block; margin-bottom: 4px; font-size: 17px; }
.steps span { color: var(--ink-2); font-size: 14px; }
.contact-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px 20px; }
.contact-card { border-top: 2px solid var(--ink); padding-top: 18px; }
.contact-card small { display: block; color: var(--ink-3); font-weight: 600; margin-bottom: 6px; }
.contact-card b { font-size: 18px; }
.contact-card a { text-decoration: underline; text-underline-offset: 3px; }
.contact-card p { margin: 0; color: var(--ink-2); font-size: 15px; }
.catalog-card { display: grid; grid-template-columns: 180px 1fr; gap: 32px; align-items: center; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.catalog-card img { border-radius: 4px; box-shadow: 0 6px 18px rgba(0, 0, 0, .12); }
.catalog-card h3 { margin: 0 0 6px; font-size: 20px; }
.catalog-card p { margin: 0 0 16px; color: var(--ink-2); }

/* 바닥글 */
.site-footer { background: var(--bg-soft); border-top: 1px solid var(--line); color: var(--ink-2); font-size: 14px; padding: 44px 0 52px; }
.site-footer .wrap { display: grid; grid-template-columns: 1fr auto; gap: 24px; }
.footer-info { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 4px 20px; }
.footer-links { display: flex; gap: 22px; align-items: start; font-weight: 600; }
.footer-links a:hover { color: var(--ink); }
.copy { margin-top: 18px; font-size: 13px; color: var(--ink-3); }

@media (max-width: 960px) {
  .slide { grid-template-columns: 1fr; gap: 24px; }
  .slide-img { order: -1; }
  .slide h1, .slide h2 { font-size: 34px; }
  .slide p { margin-bottom: 24px; }
  .cat-grid { grid-template-columns: repeat(2, 1fr); }
  .points { grid-template-columns: repeat(2, 1fr); gap: 32px 24px; }
  .detail { grid-template-columns: 1fr; gap: 28px; }
  .two-col { grid-template-columns: 1fr; gap: 40px; }
  .steps { grid-template-columns: 1fr 1fr; gap: 28px 20px; }
  .header-search { display: none; }
  .band { flex-direction: column; align-items: start; padding: 32px 28px; }
}
@media (max-width: 760px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0; background: #fff; border-bottom: 1px solid var(--line); padding: 4px 24px 12px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav a:last-child { border-bottom: 0; }
  .nav a[aria-current="page"]::after { display: none; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .hero .wrap { padding-top: 24px; padding-bottom: 32px; }
  .slide h1, .slide h2 { font-size: 28px; }
  .slide p { font-size: 15px; }
  .hero-ctrl { margin-top: 24px; }
  .section { padding: 56px 0; }
  .section-head { flex-direction: column; align-items: start; }
  .section-head h2 { font-size: 24px; }
  .cat-grid { grid-template-columns: 1fr 1fr; gap: 20px 12px; }
  .cat-meta { flex-direction: column; gap: 0; }
  .cat-meta b { font-size: 15px; }
  .grid { grid-template-columns: 1fr 1fr; gap: 24px 12px; }
  .card .code { font-size: 15px; }
  .mini { font-size: 12px; }
  .filters { padding: 4px 16px; }
  .filter-row { grid-template-columns: 1fr; gap: 6px; }
  .cat-tabs { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  .cat-tabs button { white-space: nowrap; }
  .page-title { padding: 32px 0 28px; }
  .page-title h1 { font-size: 28px; }
  .info h1 { font-size: 30px; }
  .steps { grid-template-columns: 1fr; }
  .catalog-card { grid-template-columns: 1fr; padding: 20px; }
  .catalog-card img { max-width: 160px; }
  .cert { grid-template-columns: 110px 1fr; gap: 16px; }
  .map-box { aspect-ratio: 4 / 3; }
  .site-footer .wrap { grid-template-columns: 1fr; }
}
@media (max-width: 400px) {
  .site-header .logo span { display: none; }
}