:root {
  --ink: #171714;
  --ink-soft: #24241f;
  --paper: #f4f0e7;
  --paper-deep: #e9e1d2;
  --wood: #9d5c32;
  --wood-dark: #6e3c23;
  --line: rgba(23, 23, 20, .18);
  --serif: "Libre Caslon Display", Georgia, serif;
  --sans: "DM Sans", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--sans); font-size: 16px; line-height: 1.65; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.site-header {
  position: fixed; z-index: 20; inset: 0 0 auto 0; height: 88px; display: flex; align-items: center;
  justify-content: space-between; padding: 0 clamp(24px, 5vw, 78px); color: #fff; border-bottom: 1px solid rgba(255,255,255,.22);
  transition: background .35s ease, color .35s ease, height .35s ease, border-color .35s ease;
}
.site-header.scrolled { height: 72px; color: var(--ink); background: rgba(244,240,231,.94); backdrop-filter: blur(14px); border-color: var(--line); }
.brand { display: inline-flex; align-items: center; }
.logo-image { width: 62px; height: 64px; object-fit: contain; transition: filter .3s ease; }
.logo-color { display: none; }
.site-header.scrolled .logo-light { display: none; }
.site-header.scrolled .logo-color { display: block; }
.main-nav { display: flex; align-items: center; gap: clamp(22px, 2.4vw, 42px); font-size: 14px; font-weight: 500; }
.main-nav a { transition: opacity .2s ease; }
.main-nav a:hover { opacity: .62; }
.main-nav a.active { padding-bottom: 4px; border-bottom: 1px solid currentColor; }
.nav-cta { border: 1px solid currentColor; padding: 10px 18px; }
.menu-button { display: none; border: 0; color: inherit; background: none; padding: 8px; }
.menu-button span { display: block; width: 26px; height: 1px; margin: 6px 0; background: currentColor; }

.hero { position: relative; min-height: 820px; height: 100svh; color: #fff; overflow: hidden; background: #201c17; }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; animation: hero-in 1.6s cubic-bezier(.2,.7,.2,1) both; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(13,13,11,.72) 0%, rgba(13,13,11,.31) 48%, rgba(13,13,11,.1) 100%), linear-gradient(0deg, rgba(13,13,11,.45), transparent 45%); }
.hero-content { position: absolute; z-index: 2; left: clamp(24px, 8vw, 124px); top: 50%; width: min(730px, 80vw); transform: translateY(-46%); }
.eyebrow { margin: 0 0 20px; color: var(--wood-dark); font-size: 12px; font-weight: 600; letter-spacing: .2em; text-transform: uppercase; }
.eyebrow.light { color: #e5c9a8; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.04; }
h1 { margin: 0; font-size: clamp(52px, 6.4vw, 98px); letter-spacing: -.035em; }
.hero-copy { max-width: 600px; margin: 34px 0 36px; color: rgba(255,255,255,.82); font-size: 18px; line-height: 1.7; }
.hero-actions { display: flex; align-items: center; gap: 34px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 52px; padding: 0 25px; font-size: 13px; font-weight: 600; letter-spacing: .04em; transition: transform .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button-light { background: #fff; color: var(--ink); }
.button-dark { margin-top: 32px; color: #fff; background: var(--ink); }
.text-link { display: inline-flex; gap: 14px; align-items: center; padding-bottom: 6px; border-bottom: 1px solid currentColor; font-size: 14px; font-weight: 600; }
.text-link.light { color: #fff; }
.hero-index { position: absolute; z-index: 2; right: clamp(24px, 5vw, 78px); bottom: 35px; display: flex; align-items: center; gap: 16px; font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.hero-index i { width: 70px; height: 1px; background: rgba(255,255,255,.65); }

.intro, .technology { padding: 120px clamp(24px, 7vw, 110px); }
.section-label { display: flex; justify-content: space-between; padding-bottom: 18px; border-bottom: 1px solid var(--line); font-size: 12px; font-weight: 600; letter-spacing: .16em; text-transform: uppercase; }
.section-label.inverse { color: #fff; border-color: rgba(255,255,255,.22); }
.intro-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 9vw; padding: 86px 0 100px; }
h2 { margin: 0; font-size: clamp(46px, 5.5vw, 82px); letter-spacing: -.04em; }
h2 em { color: var(--wood); font-style: italic; }
.intro-copy { max-width: 580px; padding-top: 8px; }
.intro-copy .lead { margin-top: 0; font-size: 24px; line-height: 1.45; }
.intro-copy > p:not(.lead) { color: #5a574f; }
.intro-copy .text-link { margin-top: 22px; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.principles article { min-height: 230px; padding: 32px; border-right: 1px solid var(--line); }
.principles article:first-child { padding-left: 0; }
.principles article:last-child { border-right: 0; }
.principles span, .product-number { color: var(--wood); font-size: 12px; }
.principles h3 { margin: 48px 0 12px; font-size: 32px; }
.principles p { margin: 0; max-width: 260px; color: #646159; }

.products { padding: 120px clamp(24px, 5vw, 78px); color: #fff; background: var(--ink); }
.products-heading { display: grid; grid-template-columns: 1.3fr .7fr; gap: 8vw; padding: 80px 3vw 110px; align-items: end; }
.products-heading h2 { font-size: clamp(45px, 5.4vw, 78px); }
.products-heading p { color: rgba(255,255,255,.62); }
.product-panel { display: grid; grid-template-columns: 1.2fr .8fr; min-height: 690px; margin-bottom: 42px; color: var(--ink); background: var(--paper); }
.product-panel.reverse { grid-template-columns: .8fr 1.2fr; }
.product-panel.reverse .product-visual { order: 2; }
.product-visual { position: relative; min-height: 620px; background-size: cover; background-repeat: no-repeat; }
.product-visual-onjeong { background-image: linear-gradient(0deg, rgba(0,0,0,.28), transparent 48%), url("onjeong-interior.webp"); background-position: center; }
.product-visual-sodam { background-image: linear-gradient(0deg, rgba(0,0,0,.22), transparent 50%), url("sodam-1.webp"); background-position: center; background-size: contain; background-color: #f2f2f0; }
.product-visual-sobokchae { background-image: linear-gradient(0deg, rgba(0,0,0,.18), transparent 46%), url("sobokchae.webp"); background-position: center; background-size: contain; background-color: #cfd8dc; }
.image-note { position: absolute; left: 28px; bottom: 24px; color: #fff; font-size: 11px; letter-spacing: .13em; text-transform: uppercase; }
.product-info { padding: clamp(48px, 6vw, 90px); }
.product-number { display: block; margin-bottom: 64px; }
.product-info .eyebrow { margin-bottom: 14px; }
.product-info h3 { margin: 0; font-size: clamp(54px, 5vw, 78px); }
.name-note { margin: 8px 0 32px; color: #8e877b; font-size: 13px; }
.product-lead { font-family: var(--serif); font-size: 26px; line-height: 1.35; }
.product-info > p:not(.eyebrow,.name-note,.product-lead) { color: #615e56; }
.feature-list { margin: 30px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.feature-list li { display: flex; justify-content: space-between; gap: 20px; padding: 12px 0; border-bottom: 1px solid var(--line); color: #69655d; font-size: 13px; }
.feature-list span { color: var(--ink); font-weight: 600; }
.module-row { display: grid; grid-template-columns: repeat(3, 1fr); margin-top: 30px; border: 1px solid var(--line); }
.module-row div { padding: 16px; border-right: 1px solid var(--line); }
.module-row div:last-child { border-right: 0; }
.module-row strong, .module-row span { display: block; }
.module-row strong { font: 34px var(--serif); }
.module-row span { color: #777168; font-size: 12px; }

.technology { background: var(--paper-deep); }
.technology-grid { display: grid; grid-template-columns: 1.25fr .75fr; gap: 8vw; align-items: end; padding: 82px 0 100px; }
.technology-intro { margin: 0; max-width: 500px; font-size: 20px; }
.process-list { margin: 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.process-list li { display: grid; grid-template-columns: 60px .75fr 1fr; gap: 28px; align-items: baseline; padding: 26px 0; border-bottom: 1px solid var(--line); }
.process-list span { color: var(--wood); font-size: 12px; }
.process-list strong { font: 25px var(--serif); }
.process-list p { margin: 0; color: #656159; }
.patent-note { display: grid; grid-template-columns: .6fr 1.4fr auto; gap: 30px; align-items: center; margin-top: 70px; padding: 30px; color: #fff; background: var(--ink-soft); }
.patent-note span { color: #d2ae87; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; }
.patent-note p { margin: 0; }
.patent-note strong { font-weight: 500; }

.vision { position: relative; display: flex; align-items: center; min-height: 720px; padding: 100px clamp(24px, 8vw, 124px); color: #fff; background: linear-gradient(90deg, rgba(15,14,12,.85), rgba(15,14,12,.2)), url("onjeong-exterior.webp") center/cover fixed; }
.vision-copy { max-width: 780px; }
.vision-copy h2 { font-size: clamp(52px, 6vw, 88px); }
.vision-copy > p:last-child { max-width: 570px; margin-top: 32px; color: rgba(255,255,255,.75); font-size: 18px; }

.contact { display: grid; grid-template-columns: 1.15fr .85fr; gap: 9vw; padding: 120px clamp(24px, 7vw, 110px); background: var(--paper); }
.contact-copy > p:last-child { max-width: 650px; color: #656159; }
.contact-card { align-self: end; padding: 42px; color: #fff; background: var(--wood-dark); }
.contact-card > p { margin-top: 0; color: rgba(255,255,255,.78); }
.contact-card a { display: flex; justify-content: space-between; padding: 18px 0; border-bottom: 1px solid rgba(255,255,255,.25); font-size: 18px; }
.contact-card small { display: block; margin-top: 32px; color: rgba(255,255,255,.55); line-height: 1.5; }

footer { display: flex; justify-content: space-between; align-items: center; padding: 35px clamp(24px, 5vw, 78px); color: rgba(255,255,255,.65); background: var(--ink); font-size: 12px; }
.footer-brand { color: #fff; }
.footer-brand .logo-image { width: 68px; height: 70px; }

/* Product detail pages */
.detail-hero { position: relative; min-height: 680px; display: flex; align-items: flex-end; padding: 150px clamp(24px, 8vw, 124px) 90px; color: #fff; overflow: hidden; background: var(--ink); }
.detail-hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.detail-hero.onjeong-detail .detail-hero-image { object-position: center; }
.detail-hero.sodam-detail .detail-hero-image { object-fit: contain; object-position: 78% center; background: #eeece6; }
.detail-hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(15,14,12,.82), rgba(15,14,12,.18)), linear-gradient(0deg, rgba(15,14,12,.52), transparent 48%); }
.detail-hero-content { position: relative; z-index: 1; max-width: 830px; }
.detail-hero h1 { margin-bottom: 24px; }
.detail-hero-copy { max-width: 660px; margin: 0; color: rgba(255,255,255,.82); font-size: 19px; }
.breadcrumb { margin-bottom: 28px; color: rgba(255,255,255,.68); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.breadcrumb a { border-bottom: 1px solid rgba(255,255,255,.45); }

.detail-intro { padding: 105px clamp(24px, 7vw, 110px); }
.detail-intro-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 9vw; padding-top: 72px; }
.detail-intro-copy .lead { margin-top: 0; font: 30px/1.35 var(--serif); }
.detail-intro-copy > p:not(.lead) { color: #615e56; }
.shared-specs { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 80px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.shared-specs div { padding: 28px 24px; border-right: 1px solid var(--line); }
.shared-specs div:first-child { padding-left: 0; }
.shared-specs div:last-child { border-right: 0; }
.shared-specs span { display: block; margin-bottom: 8px; color: var(--wood); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.shared-specs strong { font: 23px/1.25 var(--serif); }

.model-section { padding: 115px clamp(24px, 5vw, 78px); background: var(--paper-deep); }
.model-heading { display: grid; grid-template-columns: 1.15fr .85fr; gap: 9vw; align-items: end; padding: 72px 3vw 78px; }
.model-heading p { max-width: 520px; margin: 0; color: #615e56; }
.model-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.model-card { display: flex; flex-direction: column; min-width: 0; background: var(--paper); border: 1px solid rgba(23,23,20,.12); }
.model-image-wrap { position: relative; aspect-ratio: 1.3; overflow: hidden; background: #fff; }
.model-image-wrap img { width: 100%; height: 100%; object-fit: contain; transition: transform .45s ease; }
.model-card:hover .model-image-wrap img { transform: scale(1.025); }
.model-tag { position: absolute; top: 16px; left: 16px; padding: 7px 11px; color: #fff; background: var(--wood-dark); font-size: 10px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase; }
.model-body { display: flex; flex: 1; flex-direction: column; padding: 30px; }
.model-body h3 { margin: 0; font-size: 38px; }
.model-price { margin: 9px 0 22px; color: var(--wood-dark); font-size: 14px; font-weight: 600; }
.module-area { margin: 9px 0 22px; color: var(--wood-dark); font-size: 14px; font-weight: 600; }
.model-summary { min-height: 78px; margin: 0 0 24px; color: #625e56; }
.spec-list { margin: auto 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.spec-list li { display: grid; grid-template-columns: 90px 1fr; gap: 12px; padding: 11px 0; border-bottom: 1px solid var(--line); font-size: 13px; }
.spec-list span { color: #807a70; }
.spec-list strong { font-weight: 500; }
.option-note { margin: 20px 0 0; color: #777168; font-size: 12px; line-height: 1.55; }

.comparison { padding: 115px clamp(24px, 7vw, 110px); background: var(--paper); }
.comparison-head { display: grid; grid-template-columns: 1fr .8fr; gap: 8vw; align-items: end; margin-bottom: 58px; }
.comparison-head p { margin: 0; color: #615e56; }
.table-scroll { overflow-x: auto; border-top: 1px solid var(--ink); }
.compare-table { width: 100%; min-width: 800px; border-collapse: collapse; text-align: left; }
.compare-table th, .compare-table td { padding: 18px 20px; border-bottom: 1px solid var(--line); vertical-align: top; }
.compare-table thead th { font: 24px var(--serif); }
.compare-table thead th:first-child { font: 12px var(--sans); letter-spacing: .14em; text-transform: uppercase; }
.compare-table tbody th { width: 180px; color: #777168; font-size: 12px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; }
.compare-table tbody td { font-size: 14px; }
.price-disclaimer { margin: 24px 0 0; color: #777168; font-size: 12px; }
.combination-section { padding: 115px clamp(24px, 5vw, 78px); background: var(--paper); }
.combination-heading { display: grid; grid-template-columns: 1.15fr .85fr; gap: 9vw; align-items: end; padding: 72px 3vw 78px; }
.combination-heading p { max-width: 530px; margin: 0; color: #615e56; }
.combination-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.combination-card { overflow: hidden; background: #ebe8e0; border: 1px solid var(--line); }
.combination-image { aspect-ratio: 16 / 9; overflow: hidden; background: #fff; }
.combination-image img { width: 100%; height: 100%; object-fit: contain; transition: transform .45s ease; }
.combination-card:hover .combination-image img { transform: scale(1.02); }
.combination-body { display: grid; grid-template-columns: 1fr auto; gap: 14px 28px; padding: 32px; }
.combination-body .eyebrow { margin-bottom: 10px; }
.combination-body h3 { margin: 0; font-size: 42px; }
.combination-area { margin: 14px 0 0; color: var(--wood-dark); font-size: 13px; font-weight: 600; }
.combination-body > p:last-child { grid-column: 1 / -1; margin: 8px 0 0; color: #625e56; }
.detail-cta { display: grid; grid-template-columns: 1.2fr .8fr; gap: 8vw; padding: 100px clamp(24px, 7vw, 110px); color: #fff; background: var(--wood-dark); }
.detail-cta h2 { font-size: clamp(44px, 5vw, 72px); }
.detail-cta-actions { align-self: end; }
.detail-cta-actions p { color: rgba(255,255,255,.76); }
.detail-cta .button-light { margin-top: 18px; }

@keyframes hero-in { from { opacity: 0; transform: scale(1.035); } to { opacity: 1; transform: scale(1); } }

@media (max-width: 900px) {
  .site-header { height: 72px; }
  .menu-button { display: block; }
  .main-nav { position: absolute; top: 72px; left: 0; right: 0; display: none; padding: 28px; color: var(--ink); background: var(--paper); border-bottom: 1px solid var(--line); }
  .main-nav.open { display: grid; gap: 18px; }
  .nav-cta { justify-self: start; }
  .hero { min-height: 760px; }
  .hero-content { width: calc(100% - 48px); }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 22px; }
  .hero-index { display: none; }
  .intro, .technology, .products, .contact { padding: 88px 24px; }
  .intro-grid, .products-heading, .technology-grid, .contact { grid-template-columns: 1fr; gap: 48px; }
  .intro-grid { padding: 64px 0; }
  .principles { grid-template-columns: 1fr; }
  .principles article, .principles article:first-child { min-height: 0; padding: 28px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .principles article:last-child { border-bottom: 0; }
  .principles h3 { margin-top: 24px; }
  .products-heading { padding: 64px 0 80px; }
  .product-panel, .product-panel.reverse { grid-template-columns: 1fr; }
  .product-panel.reverse .product-visual { order: 0; }
  .product-visual { min-height: 500px; }
  .product-number { margin-bottom: 40px; }
  .process-list li { grid-template-columns: 38px 1fr; }
  .process-list p { grid-column: 2; }
  .patent-note { grid-template-columns: 1fr; gap: 10px; }
  .vision { min-height: 620px; padding: 90px 24px; background-attachment: scroll; }
  footer { align-items: flex-start; flex-direction: column; gap: 18px; }
  footer p { margin: 0; }
  .detail-hero { min-height: 620px; padding: 130px 24px 68px; }
  .detail-intro, .model-section, .comparison, .combination-section { padding: 88px 24px; }
  .detail-intro-grid, .model-heading, .combination-heading, .comparison-head, .detail-cta { grid-template-columns: 1fr; gap: 44px; }
  .model-heading { padding: 58px 0; }
  .combination-heading { padding: 58px 0; }
  .shared-specs { grid-template-columns: repeat(2, 1fr); }
  .shared-specs div:nth-child(2) { border-right: 0; }
  .shared-specs div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .model-grid { grid-template-columns: 1fr; }
  .model-image-wrap { aspect-ratio: 1.6; }
  .model-summary { min-height: 0; }
  .combination-grid { grid-template-columns: 1fr; }
  .detail-cta { padding: 82px 24px; }
}

@media (max-width: 560px) {
  h1 { font-size: 48px; }
  h2 { font-size: 44px; }
  .hero-copy { font-size: 16px; }
  .product-visual { min-height: 360px; }
  .product-info { padding: 42px 24px; }
  .product-info h3 { font-size: 46px; }
  .feature-list li { flex-direction: column; gap: 2px; }
  .contact-card { padding: 30px 22px; }
  .contact-card a { font-size: 15px; }
  .logo-image { width: 52px; height: 54px; }
  .shared-specs { grid-template-columns: 1fr; }
  .shared-specs div, .shared-specs div:first-child { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .shared-specs div:last-child { border-bottom: 0; }
  .model-body { padding: 25px 20px; }
  .combination-body { grid-template-columns: 1fr; padding: 25px 20px; }
  .combination-body > p:last-child { grid-column: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .hero-image { animation: none; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}