:root {
  --ink: #111316;
  --steel: #c7c9c8;
  --dark-steel: #4c5254;
  --paper: #f2eee7;
  --concrete: #d7d0c6;
  --amber: #b77a3d;
  --red: #9e332d;
  --line: rgba(17, 19, 22, .16);
  --light-line: rgba(242, 238, 231, .18);
  --shadow: 0 30px 90px rgba(5, 7, 9, .28);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(90deg, rgba(17,19,22,.04) 1px, transparent 1px) 0 0 / 8.333vw 100%, var(--paper);
  font-family: Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", Inter, system-ui, sans-serif;
  word-break: keep-all;
  overflow-wrap: break-word;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, select { font: inherit; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  min-height: 72px;
  padding: 12px clamp(18px, 4vw, 64px);
  color: var(--paper);
  background: rgba(17,19,22,.9);
  border-bottom: 1px solid var(--light-line);
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-mark { display: grid; width: 42px; height: 42px; place-items: center; color: var(--ink); background: linear-gradient(135deg, #f4f0e9, #8b9192); font-weight: 950; }
.brand span:last-child { display: grid; gap: 2px; }
.brand strong { font-size: 18px; font-weight: 900; }
.brand small { color: rgba(242,238,231,.58); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.site-header nav { display: flex; justify-content: center; gap: clamp(16px, 3vw, 40px); color: rgba(242,238,231,.68); font-size: 14px; font-weight: 800; }
.header-cta, .primary-button, .secondary-button { display: inline-flex; min-height: 48px; align-items: center; justify-content: center; padding: 0 20px; font-weight: 900; border-radius: 0; }
.header-cta, .primary-button { color: var(--paper); background: var(--red); border: 1px solid var(--red); }
.secondary-button { color: var(--paper); background: rgba(242,238,231,.06); border: 1px solid rgba(242,238,231,.36); }

.hero { position: relative; min-height: calc(100vh - 72px); display: grid; align-items: end; overflow: hidden; color: var(--paper); padding: clamp(104px, 12vw, 170px) clamp(18px, 4vw, 64px) clamp(32px, 5vw, 64px); background: var(--ink); }
.hero > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(5,7,9,.96), rgba(5,7,9,.72) 36%, rgba(5,7,9,.22) 70%, rgba(5,7,9,.08)), linear-gradient(180deg, rgba(5,7,9,.14), rgba(5,7,9,.84)); }
.hero-copy { position: relative; z-index: 2; width: min(780px, 100%); padding-bottom: clamp(90px, 10vw, 132px); }
.eyebrow { margin: 0 0 16px; color: var(--amber); font-size: 12px; font-weight: 900; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 24px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(54px, 7vw, 112px); line-height: .94; font-weight: 400; letter-spacing: -.035em; }
h2 { margin-bottom: 18px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(38px, 5vw, 74px); line-height: 1.02; font-weight: 400; letter-spacing: -.025em; }
h3 { margin-bottom: 10px; font-size: 23px; }
.hero-copy p, .section-copy p, .split-copy p, .install-copy p, .estimate-section p, .overlay-panel p, .review-grid p, .site-footer p { font-size: 18px; line-height: 1.78; }
.hero-copy p { color: rgba(242,238,231,.74); max-width: 620px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.hero-spec { position: relative; z-index: 2; display: grid; grid-template-columns: repeat(3, 1fr); width: min(920px, 100%); border: 1px solid rgba(242,238,231,.2); background: rgba(17,19,22,.62); backdrop-filter: blur(14px); }
.hero-spec span { min-height: 96px; display: grid; gap: 4px; padding: 20px; border-right: 1px solid rgba(242,238,231,.14); color: rgba(242,238,231,.62); font-size: 13px; font-weight: 800; }
.hero-spec span:last-child { border-right: 0; }
.hero-spec b { color: var(--paper); font-size: 26px; }

.proof-strip { display: grid; grid-template-columns: repeat(5, 1fr); color: var(--paper); background: #1c2023; border-top: 1px solid var(--light-line); border-bottom: 1px solid var(--light-line); }
.proof-strip span { display: grid; min-height: 92px; place-items: center; padding: 18px; border-right: 1px solid var(--light-line); font-size: 13px; font-weight: 900; letter-spacing: .06em; text-align: center; }
.proof-strip span:last-child { border-right: 0; }

.heritage-section, .process-section, .split-section, .material-section, .install-section, .review-section, .estimate-section { padding: clamp(78px, 9vw, 140px) clamp(18px, 4vw, 64px); }
.section-copy { max-width: 960px; margin-bottom: 42px; }
.heritage-section { display: grid; grid-template-columns: minmax(320px,.82fr) minmax(460px,1.18fr); gap: clamp(34px, 6vw, 92px); align-items: end; }
.image-frame { overflow: hidden; box-shadow: var(--shadow); background: var(--concrete); }
.image-frame img { width: 100%; min-height: 560px; object-fit: cover; }

.process-section { color: var(--paper); background: var(--ink); }
.process-copy { max-width: 900px; margin-bottom: 42px; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--light-line); border-left: 1px solid var(--light-line); }
.process-grid article { min-height: 330px; padding: 28px; border-right: 1px solid var(--light-line); border-bottom: 1px solid var(--light-line); }
.process-grid span { display: block; margin-bottom: 68px; color: var(--amber); font-family: Georgia, "Times New Roman", serif; font-size: 50px; }
.process-grid p { color: rgba(242,238,231,.66); line-height: 1.7; }

.split-section, .install-section, .estimate-section { display: grid; grid-template-columns: repeat(12, 1fr); gap: 0; align-items: center; }
.split-section .image-frame { grid-column: 1 / span 7; grid-row: 1; }
.split-copy { grid-column: 7 / -1; grid-row: 1; z-index: 2; padding: clamp(28px, 4vw, 58px); background: rgba(242,238,231,.86); border: 1px solid var(--line); backdrop-filter: blur(14px); }
.spec-list { display: grid; gap: 0; margin: 30px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.spec-list li { display: grid; grid-template-columns: 110px 1fr; gap: 18px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.spec-list span, .install-copy p, .estimate-section p, .review-grid p { color: rgba(17,19,22,.68); }

.material-section { background: var(--concrete); }
.matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.matrix article { min-height: 300px; padding: 28px; background: var(--paper); }
.matrix small { display: block; margin-bottom: 72px; color: var(--red); font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.matrix b { display: block; margin-bottom: 12px; font-size: 23px; }
.matrix span { color: rgba(17,19,22,.68); line-height: 1.62; }

.product-section { position: relative; min-height: 760px; display: grid; align-items: end; overflow: hidden; color: var(--paper); }
.product-section > img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.product-section::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(5,7,9,.12), rgba(5,7,9,.82)); }
.overlay-panel { position: relative; z-index: 2; width: min(760px, 100%); margin: clamp(18px, 4vw, 64px); padding: clamp(28px, 4vw, 58px); background: rgba(17,19,22,.72); border: 1px solid var(--light-line); backdrop-filter: blur(14px); }
.overlay-panel p { color: rgba(242,238,231,.7); }

.install-section .install-copy { grid-column: 1 / span 5; padding-right: clamp(28px, 5vw, 72px); }
.install-section .image-frame { grid-column: 6 / -1; }
.review-section { background: var(--paper); }
.review-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.review-grid article { min-height: 290px; padding: 28px; background: #fffaf2; border: 1px solid var(--line); }
.review-grid b { display: block; margin-top: 24px; }

.estimate-section { background: var(--ink); color: var(--paper); }
.estimate-section > div:first-child { grid-column: 1 / span 7; padding-right: clamp(28px, 5vw, 72px); }
.estimate-section p { color: rgba(242,238,231,.7); }
.estimate-form { grid-column: 8 / -1; display: grid; gap: 14px; padding: 28px; background: rgba(242,238,231,.08); border: 1px solid var(--light-line); }
.estimate-form label { display: grid; gap: 8px; font-size: 13px; font-weight: 900; }
.estimate-form input, .estimate-form select { height: 50px; padding: 0 14px; color: var(--ink); border: 1px solid var(--light-line); background: var(--paper); }

.site-footer { padding: clamp(48px, 7vw, 84px) clamp(18px, 4vw, 64px) 28px; color: rgba(242,238,231,.72); background: #090b0d; }
.footer-brand { display: grid; grid-template-columns: minmax(240px,.72fr) minmax(300px,1.28fr); gap: 48px; align-items: start; padding-bottom: 38px; border-bottom: 1px solid var(--light-line); }
.footer-brand p { margin: 0; color: rgba(242,238,231,.62); }
.footer-info { padding: 34px 0; border-bottom: 1px solid var(--light-line); }
.footer-info dl { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px 34px; margin: 0; }
.footer-info div { display: grid; grid-template-columns: 150px 1fr; gap: 18px; padding: 12px 0; border-bottom: 1px solid rgba(242,238,231,.08); }
.footer-info dt { color: rgba(242,238,231,.44); font-size: 13px; }
.footer-info dd { margin: 0; color: rgba(242,238,231,.72); font-size: 14px; line-height: 1.5; }
.footer-bottom { display: flex; justify-content: space-between; gap: 24px; padding-top: 24px; color: rgba(242,238,231,.44); font-size: 13px; }
.footer-bottom nav { display: flex; gap: 18px; color: rgba(242,238,231,.62); }

.policy-hero {
  padding: clamp(92px, 10vw, 150px) clamp(18px, 4vw, 64px) clamp(56px, 7vw, 96px);
  color: var(--paper);
  background:
    linear-gradient(90deg, rgba(242,238,231,.05) 1px, transparent 1px) 0 0 / 8.333vw 100%,
    linear-gradient(135deg, #111316, #252a2d 58%, #4c5254);
}

.policy-hero p {
  max-width: 760px;
  color: rgba(242,238,231,.72);
  font-size: 18px;
  line-height: 1.78;
}

.policy-content {
  display: grid;
  grid-template-columns: minmax(220px, .38fr) minmax(320px, 1fr);
  gap: clamp(32px, 6vw, 92px);
  padding: clamp(70px, 8vw, 120px) clamp(18px, 4vw, 64px);
}

.policy-index {
  position: sticky;
  top: 96px;
  align-self: start;
  display: grid;
  gap: 10px;
  padding: 22px;
  color: var(--paper);
  background: var(--ink);
  border: 1px solid var(--line);
}

.policy-index a {
  padding: 10px 0;
  border-bottom: 1px solid var(--light-line);
  color: rgba(242,238,231,.72);
  font-size: 14px;
  font-weight: 800;
}

.policy-index a:last-child { border-bottom: 0; }

.policy-document {
  display: grid;
  gap: 28px;
}

.policy-block {
  padding: clamp(24px, 3vw, 36px);
  background: #fffaf2;
  border: 1px solid var(--line);
}

.policy-block h2 {
  margin-bottom: 18px;
  font-family: Pretendard, "Apple SD Gothic Neo", "Noto Sans KR", Inter, system-ui, sans-serif;
  font-size: clamp(24px, 2.6vw, 34px);
  font-weight: 900;
  letter-spacing: 0;
}

.policy-block p,
.policy-block li {
  color: rgba(17,19,22,.72);
  font-size: 16px;
  line-height: 1.78;
}

.policy-block ul {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 20px;
}

.policy-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 14px;
  font-size: 15px;
}

.policy-table th,
.policy-table td {
  padding: 14px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.6;
}

.policy-table th {
  background: var(--concrete);
}

@media (max-width: 980px) {
  .site-header nav { display: none; }
  .proof-strip, .process-grid, .matrix, .review-grid, .hero-spec, .heritage-section, .footer-brand, .footer-info dl, .policy-content { grid-template-columns: 1fr; }
  .split-section, .install-section, .estimate-section { grid-template-columns: 1fr; }
  .split-section .image-frame, .split-copy, .install-section .install-copy, .install-section .image-frame, .estimate-section > div:first-child, .estimate-form { grid-column: 1; }
  .split-copy { margin-top: -70px; width: calc(100% - 28px); }
  .install-section .install-copy, .estimate-section > div:first-child { padding: 0 0 28px; }
  .policy-index { position: static; }
}
@media (max-width: 640px) {
  .site-header { grid-template-columns: 1fr auto; padding: 12px 14px; }
  .brand small { display: none; }
  .header-cta { min-height: 40px; padding: 0 12px; font-size: 12px; }
  .hero, .heritage-section, .process-section, .split-section, .material-section, .install-section, .review-section, .estimate-section, .policy-hero, .policy-content, .site-footer { padding-left: 14px; padding-right: 14px; }
  .hero { min-height: 760px; }
  .hero > img { object-position: 62% center; }
  h1 { font-size: 46px; }
  h2 { font-size: 36px; }
  .hero-actions, .footer-bottom { flex-direction: column; }
  .primary-button, .secondary-button { width: 100%; }
  .spec-list li, .footer-info div { grid-template-columns: 1fr; }
  .image-frame img { min-height: 370px; }
}