/* AEROCLAD Microsite v2.0 · Common Stylesheet */
:root {
  --navy: #0F2847;
  --navy-dark: #0A1B33;
  --sky: #0EA5E9;
  --sky-light: #38BDF8;
  --sky-bg: #E0F2FE;
  --slate-50: #F8FAFC;
  --slate-100: #F1F5F9;
  --slate-200: #E2E8F0;
  --slate-300: #CBD5E1;
  --slate-500: #64748B;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-900: #0F172A;
  --white: #FFFFFF;
  /* Product accent colors */
  --acc-glasswool: #D4A93E;  /* 그라스울 옐로우-탄 */
  --acc-phenolic: #C7A26B;   /* 페놀릭 크림-탄 */
  --acc-urethane: #6B7C93;   /* PIR 우레탄 슬레이트 그레이 */
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Pretendard', 'Noto Sans KR', system-ui, sans-serif;
  background: var(--white);
  color: var(--slate-700);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--navy); text-decoration: none; transition: color .2s; }
a:hover { color: var(--sky); }

.container { max-width: 1200px; margin: 0 auto; padding: 0 32px; }
section { padding: 100px 0; border-bottom: 1px solid var(--slate-100); }
.eyebrow {
  font-size: 11px; letter-spacing: 0.3em; color: var(--sky);
  font-weight: 700; text-transform: uppercase; margin-bottom: 16px;
}
.section-title {
  font-size: clamp(26px, 3.6vw, 38px); font-weight: 800;
  color: var(--navy); letter-spacing: -0.02em; line-height: 1.15;
  margin-bottom: 12px;
}
.section-sub {
  font-size: 13px; color: var(--slate-500); letter-spacing: 0.15em;
  text-transform: uppercase; margin-bottom: 32px; font-weight: 500;
}
.section-divider { width: 48px; height: 3px; background: var(--sky); margin-bottom: 40px; }
.section-lead {
  font-size: clamp(15px, 1.4vw, 17px); color: var(--slate-600);
  line-height: 1.7; max-width: 760px; margin-bottom: 56px;
}

/* ─── NAV ─── */
nav {
  position: fixed; top: 0; left: 0; right: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  z-index: 1000; border-bottom: 1px solid var(--slate-200);
}
.nav-inner {
  max-width: 1200px; margin: 0 auto; padding: 16px 32px;
  display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 19px; font-weight: 800; color: var(--navy);
  letter-spacing: -0.02em;
}
.nav-logo span {
  color: var(--sky); font-size: 11px; letter-spacing: 0.2em;
  font-weight: 600; margin-left: 8px; vertical-align: middle;
}
.nav-menu { display: flex; gap: 28px; list-style: none; align-items: center; }
.nav-menu a {
  font-size: 13px; color: var(--slate-600); font-weight: 500; letter-spacing: 0.05em;
}
.nav-menu a:hover { color: var(--sky); }
.nav-menu a.active { color: var(--navy); font-weight: 700; }
.nav-cta {
  background: var(--navy); color: var(--white) !important;
  padding: 9px 18px; border-radius: 4px; font-size: 12px;
  font-weight: 600; letter-spacing: 0.05em;
}
.nav-cta:hover { background: var(--sky); }
@media (max-width: 900px) { .legacy-nav .nav-menu { gap: 16px; } .legacy-nav .nav-menu .hide-mobile { display: none; } }

/* ─── Product Hero ─── */
.product-hero {
  padding: 130px 0 80px;
  background: linear-gradient(180deg, var(--slate-50) 0%, var(--white) 100%);
  border-bottom: none;
}
.product-hero-grid {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center;
}
.product-hero-eyebrow {
  font-size: 11px; letter-spacing: 0.4em; color: var(--sky);
  font-weight: 700; margin-bottom: 16px;
}
.product-hero h1 {
  font-size: clamp(36px, 5.5vw, 64px); font-weight: 900;
  color: var(--navy); letter-spacing: -0.03em; line-height: 1.05;
  margin-bottom: 20px;
}
.product-hero h1 .accent-color { color: var(--accent); }
.product-hero-tagline {
  font-size: 17px; color: var(--slate-600); font-weight: 500;
  line-height: 1.55; margin-bottom: 28px;
}
.product-hero-meta {
  display: flex; gap: 24px; padding: 16px 0;
  border-top: 1px solid var(--slate-200);
  border-bottom: 1px solid var(--slate-200);
  margin-bottom: 28px; flex-wrap: wrap;
}
.product-hero-meta .item {
  font-size: 12px;
}
.product-hero-meta .item-label {
  color: var(--slate-500); letter-spacing: 0.1em;
  text-transform: uppercase; font-weight: 600; margin-bottom: 4px;
  font-size: 10px;
}
.product-hero-meta .item-val {
  color: var(--navy); font-weight: 700; font-size: 14px;
}
.product-hero-img {
  border-radius: 8px; overflow: hidden; aspect-ratio: 4/5;
  box-shadow: 0 30px 60px -15px rgba(15, 40, 71, 0.25);
  position: relative;
}
.product-hero-img img { width: 100%; height: 100%; object-fit: cover; }
.product-hero-tag {
  position: absolute; top: 20px; left: 20px;
  background: rgba(15, 40, 71, 0.85); backdrop-filter: blur(8px);
  color: var(--white); padding: 8px 14px; border-radius: 4px;
  font-size: 10px; letter-spacing: 0.2em; font-weight: 600;
}
.btn {
  padding: 13px 26px; border-radius: 4px; font-size: 13px;
  font-weight: 600; letter-spacing: 0.05em; display: inline-flex;
  align-items: center; gap: 8px; cursor: pointer; border: none;
  transition: all .25s;
}
.btn-primary { background: var(--navy); color: var(--white); }
.btn-primary:hover { background: var(--sky); transform: translateY(-2px); }
.btn-secondary { background: var(--white); color: var(--navy); border: 1.5px solid var(--slate-200); }
.btn-secondary:hover { border-color: var(--navy); transform: translateY(-2px); }
.hero-ctas { display: flex; gap: 10px; flex-wrap: wrap; }

@media (max-width: 900px) {
  .product-hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .product-hero-img { aspect-ratio: 4/3; }
}

/* ─── Features Grid ─── */
.features-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.feature-card {
  background: var(--slate-50); padding: 28px; border-radius: 8px;
  border-top: 3px solid var(--accent);
}
.feature-card .num {
  font-size: 11px; color: var(--accent); font-weight: 700;
  letter-spacing: 0.2em; margin-bottom: 12px;
}
.feature-card h4 {
  font-size: 16px; font-weight: 800; color: var(--navy);
  letter-spacing: -0.02em; margin-bottom: 8px;
}
.feature-card p { font-size: 13px; color: var(--slate-600); line-height: 1.6; }
@media (max-width: 768px) {
  .features-grid { grid-template-columns: 1fr; }
}

/* ─── Application Grid ─── */
.app-section { background: var(--slate-50); border-bottom: none; }
.app-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.app-card {
  background: var(--white); border-radius: 8px; padding: 28px 24px;
  border-left: 3px solid var(--accent); transition: all .3s;
}
.app-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 30px -10px rgba(15, 40, 71, 0.12);
}
.app-card .icon {
  font-size: 28px; margin-bottom: 12px; line-height: 1;
}
.app-card h4 {
  font-size: 16px; font-weight: 800; color: var(--navy);
  letter-spacing: -0.02em; margin-bottom: 6px;
}
.app-card .en {
  font-size: 11px; color: var(--accent); letter-spacing: 0.15em;
  font-weight: 600; margin-bottom: 14px; text-transform: uppercase;
}
.app-card p { font-size: 13px; color: var(--slate-600); line-height: 1.65; }
@media (max-width: 900px) { .app-grid { grid-template-columns: 1fr; } }

/* ─── Structure Split ─── */
.structure {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
}
.structure-img { border-radius: 8px; overflow: hidden; aspect-ratio: 4/3; }
.structure-img img { width: 100%; height: 100%; object-fit: cover; }
.layer-list { list-style: none; }
.layer-list li {
  padding: 18px 0; border-bottom: 1px solid var(--slate-200);
  display: flex; gap: 16px; align-items: flex-start;
}
.layer-list li:last-child { border-bottom: none; }
.layer-num {
  flex-shrink: 0; width: 36px; height: 36px;
  background: var(--accent); color: var(--white);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800;
}
.layer-content h4 {
  font-size: 15px; font-weight: 800; color: var(--navy); margin-bottom: 4px;
}
.layer-content p { font-size: 13px; color: var(--slate-600); line-height: 1.6; }
@media (max-width: 900px) { .structure { grid-template-columns: 1fr; gap: 32px; } }

/* ─── Spec Table ─── */
.spec-table {
  width: 100%; border-collapse: collapse;
  background: var(--white); border-radius: 8px; overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}
.spec-table th, .spec-table td {
  padding: 16px 24px; text-align: left;
  border-bottom: 1px solid var(--slate-100);
  font-size: 14px;
}
.spec-table th {
  background: var(--navy); color: var(--white);
  font-weight: 700; letter-spacing: 0.05em; font-size: 12px;
  text-transform: uppercase;
}
.spec-table td:first-child {
  font-weight: 700; color: var(--navy); width: 240px;
}
.spec-table td:nth-child(2) { color: var(--slate-700); }
.spec-table tr:last-child td { border-bottom: none; }
.spec-table tr:hover td:nth-child(2) { background: var(--slate-50); }
.spec-note {
  margin-top: 16px; padding: 12px 16px; background: var(--slate-50);
  border-left: 3px solid var(--slate-300); border-radius: 4px;
  font-size: 12px; color: var(--slate-500); line-height: 1.6;
}

/* ─── Design Considerations ─── */
.design-list {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px;
}
.design-item {
  background: var(--white); padding: 24px;
  border-radius: 8px; border: 1px solid var(--slate-200);
  display: flex; gap: 14px; align-items: flex-start;
}
.design-item .check {
  flex-shrink: 0; width: 26px; height: 26px;
  background: var(--accent); color: var(--white);
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
}
.design-item h4 {
  font-size: 14px; font-weight: 800; color: var(--navy); margin-bottom: 4px;
}
.design-item p { font-size: 13px; color: var(--slate-600); line-height: 1.55; }
@media (max-width: 768px) { .design-list { grid-template-columns: 1fr; } }

/* ─── Compare Table ─── */
.compare-section { background: var(--navy); color: var(--white); border-bottom: none; }
.compare-section .section-title { color: var(--white); }
.compare-section .eyebrow { color: var(--sky-light); }
.compare-section .section-divider { background: var(--sky); }
.compare-table {
  width: 100%; border-collapse: collapse;
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px; overflow: hidden;
}
.compare-table th, .compare-table td {
  padding: 16px 20px; text-align: left;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  font-size: 13px;
}
.compare-table thead th {
  background: rgba(14, 165, 233, 0.15);
  color: var(--sky-light); letter-spacing: 0.1em;
  font-weight: 700; text-transform: uppercase; font-size: 11px;
}
.compare-table td:first-child {
  font-weight: 700; color: var(--white); width: 200px;
}
.compare-table td { color: var(--slate-300); }
.compare-table .own { background: rgba(14, 165, 233, 0.08); color: var(--white); font-weight: 600; }
.compare-table tr:last-child td { border-bottom: none; }

/* ─── CTA (재사용) ─── */
.cta {
  background: var(--navy); color: var(--white);
  border-bottom: none; text-align: center;
}
.cta .section-title { color: var(--white); }
.cta .eyebrow { color: var(--sky-light); }
.cta-lead {
  font-size: 16px; color: var(--slate-300);
  max-width: 600px; margin: 0 auto 48px; line-height: 1.6;
}
.cta-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
  max-width: 1000px; margin: 0 auto;
}
.cta-card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.1);
  border-radius: 8px; padding: 32px 28px; text-align: left;
  transition: all .3s; cursor: pointer;
}
.cta-card:hover {
  background: rgba(14, 165, 233, 0.1); border-color: var(--sky);
  transform: translateY(-4px);
}
.cta-card .icon {
  width: 44px; height: 44px; background: var(--sky); border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 18px; color: var(--white);
}
.cta-card h4 {
  font-size: 18px; font-weight: 800; margin-bottom: 6px;
  letter-spacing: -0.02em; color: var(--white);
}
.cta-card .small {
  font-size: 11px; color: var(--sky-light); letter-spacing: 0.15em;
  margin-bottom: 14px; text-transform: uppercase; font-weight: 600;
}
.cta-card p { font-size: 13px; color: var(--slate-300); line-height: 1.65; margin-bottom: 16px; }
.cta-card .link { color: var(--sky-light); font-size: 12px; font-weight: 700; }
@media (max-width: 900px) { .cta-grid { grid-template-columns: 1fr; } }

/* ═══ v3.5 · CASING · GI · OSC INSTALLATION (신규 섹션) ═══ */

/* CASING SYSTEM */
.casing-section { background: var(--slate-50); padding: 110px 0; border-bottom: 1px solid var(--slate-100); }
.casing-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; margin-top: 16px;
}
.casing-card {
  background: #fff; border: 1px solid var(--slate-200); border-radius: 10px; overflow: hidden;
  display: flex; flex-direction: column; transition: all .25s ease;
}
.casing-card:hover { transform: translateY(-4px); box-shadow: 0 22px 50px rgba(15,40,71,0.10); border-color: var(--sky); }
.casing-img { aspect-ratio: 16/10; overflow: hidden; background: #F1F5F9; display: flex; align-items: center; justify-content: center; }
.casing-img img { max-width: 100%; max-height: 100%; width: auto; height: auto; object-fit: contain; display: block; }
.casing-body { padding: 28px 30px 30px; }
.casing-num {
  display: inline-block; font-size: 11px; font-weight: 800; letter-spacing: 0.22em;
  color: var(--sky); margin-bottom: 12px;
}
.casing-body h3 { font-size: 22px; font-weight: 800; color: var(--slate-900); letter-spacing: -0.02em; margin-bottom: 12px; }
.casing-body p { font-size: 14px; line-height: 1.8; color: var(--slate-600); margin-bottom: 16px; }
.casing-points { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.casing-points li {
  position: relative; padding-left: 18px; font-size: 13px; color: var(--slate-700); line-height: 1.7;
}
.casing-points li::before {
  content: "▸"; position: absolute; left: 0; color: var(--sky); font-weight: 700;
}
.casing-callout {
  margin-top: 32px; padding: 22px 26px; background: var(--navy); color: #fff;
  border-radius: 6px; font-size: 14px; line-height: 1.8;
}
.casing-callout strong { color: var(--sky-light); }
@media (max-width: 900px) { .casing-grid { grid-template-columns: 1fr; } }

/* GI JACKET */
.gi-section { background: #fff; padding: 110px 0; border-bottom: 1px solid var(--slate-100); }
.gi-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; margin-top: 16px;
}
.gi-card {
  background: var(--slate-50); border: 1px solid var(--slate-200); border-radius: 10px; overflow: hidden;
  display: flex; flex-direction: column; transition: all .25s ease;
}
.gi-card:hover { transform: translateY(-3px); box-shadow: 0 18px 40px rgba(15,40,71,0.10); border-color: var(--navy); }
.gi-img { aspect-ratio: 4/3; overflow: hidden; background: #0F2847; }
.gi-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.gi-body { padding: 24px 26px 26px; }
.gi-tag {
  display: inline-block; font-size: 10px; font-weight: 800; letter-spacing: 0.18em;
  color: var(--navy); background: #E2E8F0; padding: 4px 10px; border-radius: 3px; margin-bottom: 12px;
}
.gi-body h3 { font-size: 19px; font-weight: 800; color: var(--slate-900); letter-spacing: -0.02em; margin-bottom: 10px; }
.gi-body p { font-size: 13.5px; line-height: 1.75; color: var(--slate-600); }
@media (max-width: 900px) { .gi-grid { grid-template-columns: 1fr; } }

/* OSC INSTALLATION 4단계 */
.install-section { padding: 110px 0; }
.osc-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; margin-top: 16px;
}
.osc-card {
  background: #fff; border: 1px solid var(--slate-200); border-radius: 10px; overflow: hidden;
  display: flex; flex-direction: column; transition: all .25s ease;
}
.osc-card:hover { transform: translateY(-4px); box-shadow: 0 22px 48px rgba(15,40,71,0.10); border-color: var(--sky); }
.osc-img { aspect-ratio: 16/10; overflow: hidden; background: #0F2847; }
.osc-img img { width: 100%; height: 100%; object-fit: cover; display: block; }
.osc-body { padding: 22px 20px 24px; position: relative; min-width: 0; }
.osc-num {
  position: absolute; top: -18px; left: 22px;
  background: var(--sky); color: #fff; font-size: 13px; font-weight: 800; letter-spacing: 0.04em;
  padding: 6px 12px; border-radius: 4px;
}
.osc-tag {
  font-size: 11px; font-weight: 800; letter-spacing: 0.16em;
  color: var(--navy); margin: 4px 0 8px;
}
.osc-body h3 { font-size: 16px; font-weight: 800; color: var(--slate-900); letter-spacing: -0.02em; margin-bottom: 8px; word-break: keep-all; }
.osc-body p { font-size: 12.5px; line-height: 1.7; color: var(--slate-600); word-break: keep-all; }
@media (max-width: 1100px) { .osc-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .osc-grid { grid-template-columns: 1fr; } }

/* INSTALLATION — 시공 사례 하이라이트 */
.install-sub-title {
  margin-top: 72px; margin-bottom: 22px;
  font-size: 22px; font-weight: 800; color: var(--slate-900); letter-spacing: -0.02em;
}
.site-grid {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 18px;
}
.site-card {
  position: relative; overflow: hidden; border-radius: 8px; aspect-ratio: 4/5;
  background: #0F2847; margin: 0;
}
.site-card .site-img { width: 100%; height: 100%; }
.site-card .site-img img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .35s ease; }
.site-card:hover .site-img img { transform: scale(1.04); }
.site-card figcaption {
  position: absolute; left: 0; right: 0; bottom: 0; padding: 22px 18px 16px;
  background: linear-gradient(180deg, rgba(15,40,71,0) 0%, rgba(10,20,40,0.85) 100%);
  color: #fff; display: flex; flex-direction: column; gap: 4px;
}
.site-tag {
  display: inline-block; align-self: flex-start; font-size: 10px; font-weight: 800;
  letter-spacing: 0.12em; color: #fff; background: rgba(14,165,233,0.85);
  padding: 4px 9px; border-radius: 3px;
}
.site-cap { font-size: 14px; font-weight: 700; color: #fff; letter-spacing: -0.01em; }
@media (max-width: 1100px) { .site-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .site-grid { grid-template-columns: 1fr; } }

/* ─── Footer (재사용) ─── */
footer {
  background: var(--navy-dark); color: var(--slate-300);
  padding: 56px 0 36px; border-bottom: none;
}
.footer-inner {
  display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 56px; margin-bottom: 36px;
}
.footer-brand {
  font-size: 22px; font-weight: 800; color: var(--white);
  margin-bottom: 10px; letter-spacing: -0.02em;
}
.footer-tagline {
  font-size: 11px; color: var(--sky); letter-spacing: 0.3em;
  font-weight: 700; margin-bottom: 20px;
}
.footer-desc { font-size: 13px; color: var(--slate-300); line-height: 1.7; max-width: 360px; }
.footer-col h5 {
  color: var(--white); font-size: 12px; letter-spacing: 0.15em;
  font-weight: 700; margin-bottom: 18px; text-transform: uppercase;
}
.footer-col ul { list-style: none; }
.footer-col ul li { font-size: 13px; color: var(--slate-300); margin-bottom: 9px; }
.footer-col a { color: var(--slate-300); }
.footer-col a:hover { color: var(--sky-light); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08); padding-top: 28px;
  font-size: 12px; color: var(--slate-500); text-align: center; line-height: 1.8;
}
@media (max-width: 768px) { .footer-inner { grid-template-columns: 1fr; gap: 28px; } }

/* ═══════════════════════════════════════════════════
   AEROCLAD Microsite v3.1 · 제품 서브페이지 확장 스타일
   ═══════════════════════════════════════════════════ */

/* ─── Product Hero ─── */
.prod-hero {
  background: linear-gradient(135deg, #0A1B33 0%, #0F2847 55%, #1A3556 100%);
  color: var(--white);
  padding: 160px 0 100px;
  border-bottom: none;
  position: relative;
  overflow: hidden;
}
.prod-hero-grid {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center;
}
.prod-hero-eyebrow {
  font-size: 11px; letter-spacing: 0.32em; color: var(--accent);
  font-weight: 700; margin-bottom: 22px;
}
.prod-hero h1 {
  font-size: 60px; line-height: 1.08; font-weight: 800; color: #fff;
  letter-spacing: -0.02em; margin-bottom: 24px;
}
.prod-hero h1 .acc { color: var(--accent); }
.prod-hero-tagline {
  font-size: 18px; line-height: 1.7; color: rgba(255,255,255,0.85);
  max-width: 540px; margin-bottom: 36px;
}
.prod-hero-tagline strong { color: #fff; font-weight: 700; }
.prod-meta-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px;
  margin-bottom: 36px; max-width: 540px;
}
.prod-meta-cell {
  background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.10);
  border-radius: 6px; padding: 14px 16px;
}
.prod-meta-cell .lbl {
  font-size: 10px; letter-spacing: 0.25em; color: var(--accent);
  font-weight: 700; margin-bottom: 6px;
}
.prod-meta-cell .val { font-size: 13px; color: #fff; font-weight: 600; line-height: 1.5; }
.prod-hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-gold {
  display: inline-flex; align-items: center; padding: 14px 28px;
  background: var(--accent); color: #0A1B33; font-weight: 700;
  border-radius: 4px; font-size: 14px; letter-spacing: 0.04em;
  transition: all .2s;
}
.btn-gold:hover { background: var(--accent-deep); color: #fff; transform: translateY(-1px); }
.btn-ghost {
  display: inline-flex; align-items: center; padding: 14px 28px;
  background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.30);
  font-weight: 600; border-radius: 4px; font-size: 14px; letter-spacing: 0.04em;
  transition: all .2s;
}
.btn-ghost:hover { background: rgba(255,255,255,0.06); border-color: var(--accent); color: var(--accent); }
.prod-hero-img {
  position: relative; aspect-ratio: 4/3; border-radius: 8px; overflow: hidden;
  background: #0A1B33; box-shadow: 0 30px 60px rgba(0,0,0,0.35);
}
.prod-hero-img img { width: 100%; height: 100%; object-fit: cover; }
.prod-hero-tag {
  position: absolute; top: 16px; left: 16px;
  background: var(--accent); color: #0A1B33;
  padding: 6px 12px; font-size: 10px; font-weight: 800;
  letter-spacing: 0.16em; border-radius: 3px;
}

@media (max-width: 900px) {
  .prod-hero { padding: 120px 0 80px; }
  .prod-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .prod-hero h1 { font-size: 40px; }
  .prod-hero-tagline { font-size: 16px; }
  .prod-meta-grid { grid-template-columns: 1fr; }
}

/* ─── Impact Strip ─── */
.impact-strip {
  background: linear-gradient(90deg, var(--slate-900) 0%, #102845 100%);
  color: #fff; padding: 56px 0; border-bottom: none;
}
.impact-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
}
.impact-cell { text-align: left; border-left: 2px solid var(--accent); padding-left: 18px; }
.impact-num {
  font-size: 38px; font-weight: 800; color: #fff;
  letter-spacing: -0.02em; line-height: 1; margin-bottom: 10px;
}
.impact-num .unit {
  font-size: 13px; font-weight: 600; color: var(--accent);
  margin-left: 6px; letter-spacing: 0.04em;
}
.impact-label { font-size: 13px; color: rgba(255,255,255,0.85); font-weight: 600; margin-bottom: 4px; }
.impact-sub { font-size: 11px; color: rgba(255,255,255,0.45); letter-spacing: 0.04em; }
@media (max-width: 900px) {
  .impact-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .impact-num { font-size: 30px; }
}

/* ─── Common section header ─── */
.prod-section { padding: 100px 0; border-bottom: 1px solid var(--slate-100); }
.prod-section .section-lead {
  font-size: 16px; line-height: 1.85; color: var(--slate-600);
  max-width: 800px; margin-bottom: 48px;
}
.prod-section .section-lead strong { color: var(--slate-900); font-weight: 700; }

/* ─── Features 6 ─── */
.prod-features {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.prod-feature {
  background: var(--white); border: 1px solid var(--slate-200); border-radius: 8px;
  padding: 32px 28px; transition: all .25s ease;
}
.prod-feature:hover {
  transform: translateY(-3px); box-shadow: 0 14px 30px rgba(15,40,71,0.07);
  border-color: var(--accent);
}
.prod-feature .num {
  font-size: 11px; letter-spacing: 0.20em; color: var(--accent);
  font-weight: 800; margin-bottom: 14px;
}
.prod-feature h4 {
  font-size: 19px; font-weight: 700; color: var(--slate-900);
  margin-bottom: 12px; letter-spacing: -0.01em;
}
.prod-feature p { font-size: 14px; line-height: 1.75; color: var(--slate-600); margin-bottom: 14px; }
.feature-data {
  font-size: 11px; color: var(--accent-deep); letter-spacing: 0.06em;
  font-weight: 700; padding-top: 12px; border-top: 1px dashed var(--slate-200);
}
@media (max-width: 900px) { .prod-features { grid-template-columns: 1fr; } }

/* ─── Structure visual ─── */
.structure-visual { background: var(--slate-50); }
.structure-grid {
  display: grid; grid-template-columns: 0.95fr 1fr; gap: 56px; align-items: center;
}
.structure-img-wrap {
  position: relative; border-radius: 8px; overflow: hidden;
  background: var(--navy-dark); aspect-ratio: 4/3;
  box-shadow: 0 18px 40px rgba(15,40,71,0.13);
}
.structure-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.structure-img-tag {
  position: absolute; bottom: 14px; left: 14px;
  background: var(--accent); color: #0A1B33;
  padding: 6px 12px; font-size: 10px; font-weight: 800;
  letter-spacing: 0.15em; border-radius: 3px;
}
.layer-list-v2 { list-style: none; padding: 0; margin: 0; }
.layer-v2 {
  display: grid; grid-template-columns: 48px 1fr; gap: 18px;
  padding: 22px 0; border-bottom: 1px solid var(--slate-200);
}
.layer-v2:last-child { border-bottom: none; }
.layer-circle {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--accent); color: #0A1B33;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 14px; letter-spacing: 0.04em;
}
.layer-v2 h4 {
  font-size: 16px; font-weight: 700; color: var(--slate-900); margin-bottom: 6px;
}
.layer-spec {
  display: inline-block; margin-left: 8px; padding: 2px 8px;
  background: var(--accent-soft); color: var(--accent-deep);
  font-size: 11px; font-weight: 700; letter-spacing: 0.05em; border-radius: 3px;
}
.layer-v2 p { font-size: 14px; line-height: 1.7; color: var(--slate-600); margin: 0; }
@media (max-width: 900px) { .structure-grid { grid-template-columns: 1fr; gap: 32px; } }

.core-sample-panel {
  margin-top: 34px; display: grid; grid-template-columns: 1.02fr 1fr; gap: 28px;
  align-items: center; background: #fff; border: 1px solid var(--slate-200);
  border-radius: 8px; padding: 22px; box-shadow: 0 10px 30px rgba(15,40,71,0.05);
}
.core-sample-photo {
  border-radius: 8px; overflow: hidden; background: linear-gradient(180deg,#eef3f8,#dfe7ef);
  aspect-ratio: 4/3; box-shadow: inset 0 0 0 1px rgba(15,40,71,0.06);
}
.core-sample-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.sample-eyebrow {
  font-size: 11px; letter-spacing: 0.22em; color: var(--accent-deep); font-weight: 800;
  margin-bottom: 12px;
}
.core-sample-copy h3 {
  font-size: 26px; font-weight: 800; color: var(--slate-900); letter-spacing: -0.02em;
  margin-bottom: 14px;
}
.core-sample-copy p {
  font-size: 14px; line-height: 1.85; color: var(--slate-600); margin-bottom: 18px;
}
.sample-points { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.sample-points li {
  position: relative; padding-left: 18px; font-size: 13.5px; line-height: 1.75; color: var(--slate-700);
}
.sample-points li::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--accent);
  position: absolute; left: 0; top: 9px;
}
@media (max-width: 900px) {
  .core-sample-panel { grid-template-columns: 1fr; padding: 18px; }
  .core-sample-copy h3 { font-size: 22px; }
}

/* ─── Acoustic table ─── */
.acoustic-section { background: var(--slate-50); }
.acoustic-table {
  width: 100%; border-collapse: collapse; margin-top: 8px; font-size: 13px;
  background: #fff; border-radius: 6px; overflow: hidden;
  box-shadow: 0 6px 20px rgba(15,40,71,0.05);
}
.acoustic-table th {
  padding: 14px 12px; text-align: center; font-weight: 700;
  background: var(--navy); color: #fff; letter-spacing: 0.04em;
}
.acoustic-table td {
  padding: 13px 12px; text-align: center; border-bottom: 1px solid var(--slate-100);
  color: var(--slate-700);
}
.acoustic-table tr:last-child td { border-bottom: none; }
.acoustic-table tr:hover td { background: var(--accent-soft); }
.acoustic-table .row-label { text-align: left; font-weight: 700; color: var(--slate-900); }
.acoustic-table .nrc-cell { font-weight: 800; color: var(--accent-deep); background: var(--accent-soft); }
.acoustic-note {
  margin-top: 20px; padding: 18px 22px;
  background: #fff; border-left: 3px solid var(--accent);
  border-radius: 4px; font-size: 12px; color: var(--slate-600); line-height: 1.8;
}
.acoustic-note strong { color: var(--slate-900); }

/* ─── Spec table v2 ─── */
.spec-table-v2 {
  width: 100%; border-collapse: collapse; font-size: 14px;
  background: #fff; border: 1px solid var(--slate-200); border-radius: 6px; overflow: hidden;
}
.spec-table-v2 thead th {
  background: var(--navy); color: #fff; padding: 16px 22px; text-align: left;
  font-weight: 700; letter-spacing: 0.02em; font-size: 13px;
}
.spec-table-v2 tbody td {
  padding: 14px 22px; border-bottom: 1px solid var(--slate-100); vertical-align: top;
}
.spec-table-v2 tbody tr:last-child td { border-bottom: none; }
.spec-table-v2 tbody td:first-child {
  font-weight: 700; color: var(--slate-900); width: 32%;
  background: var(--slate-50); white-space: nowrap;
}
.spec-table-v2 tbody td:last-child { color: var(--slate-700); line-height: 1.7; }
.spec-table-v2 .ref {
  display: inline-block; margin-left: 6px; padding: 1px 8px;
  background: var(--accent-soft); color: var(--accent-deep);
  font-size: 10px; font-weight: 700; letter-spacing: 0.05em; border-radius: 3px;
}
.disclaimer-box {
  margin-top: 24px; padding: 20px 24px;
  background: var(--slate-50); border-left: 3px solid var(--slate-300);
  border-radius: 4px; font-size: 12.5px; color: var(--slate-600); line-height: 1.8;
}
.disclaimer-box strong { color: var(--slate-900); }

/* ─── SDM section ─── */
.sdm-section { background: var(--white); }
.sdm-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; margin-top: 16px;
}
.sdm-step {
  background: var(--slate-50); border: 1px solid var(--slate-200);
  border-radius: 8px; padding: 28px 22px; position: relative; transition: all .2s;
}
.sdm-step:hover {
  border-color: var(--accent); transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(15,40,71,0.06);
}
.sdm-num {
  position: absolute; top: -14px; left: 22px;
  background: var(--accent); color: #0A1B33;
  font-size: 12px; font-weight: 800; letter-spacing: 0.06em;
  padding: 5px 11px; border-radius: 3px;
}
.sdm-step h4 {
  margin-top: 6px; font-size: 16px; font-weight: 700; color: var(--slate-900);
  margin-bottom: 10px;
}
.sdm-step p { font-size: 13.5px; line-height: 1.75; color: var(--slate-600); margin: 0; }
.sdm-callout {
  margin-top: 32px; padding: 22px 28px;
  background: var(--navy); color: rgba(255,255,255,0.92);
  border-radius: 6px; font-size: 14px; line-height: 1.8;
}
.sdm-callout strong { color: var(--accent); }
@media (max-width: 900px) { .sdm-grid { grid-template-columns: repeat(2, 1fr); } }

/* ─── Certification grid ─── */
.cert-section { background: var(--slate-50); }
.cert-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 16px;
}
.cert-card {
  background: #fff; border: 1px solid var(--slate-200); border-radius: 8px;
  padding: 24px 22px; text-align: center; transition: all .25s ease;
}
.cert-card:hover {
  transform: translateY(-2px); border-color: var(--accent);
  box-shadow: 0 12px 26px rgba(15,40,71,0.06);
}
.cert-badge {
  display: inline-block; padding: 4px 10px;
  background: var(--accent); color: #0A1B33;
  font-size: 11px; font-weight: 800; letter-spacing: 0.10em;
  border-radius: 3px; margin-bottom: 12px;
}
.cert-card h5 {
  font-size: 14px; font-weight: 700; color: var(--slate-900);
  margin-bottom: 8px; letter-spacing: 0.01em;
}
.cert-card p { font-size: 12px; line-height: 1.6; color: var(--slate-600); margin: 0; }
@media (max-width: 900px) { .cert-grid { grid-template-columns: repeat(2, 1fr); } }

/* ─── Applications v2 ─── */
.app-grid-v2 {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
}
.app-card-v2 {
  background: #fff; border: 1px solid var(--slate-200); border-radius: 8px;
  padding: 30px 26px; transition: all .25s ease;
}
.app-card-v2:hover {
  transform: translateY(-2px); border-color: var(--accent);
  box-shadow: 0 14px 30px rgba(15,40,71,0.07);
}
.app-card-v2 .icon { font-size: 36px; margin-bottom: 14px; }
.app-card-v2 h4 { font-size: 18px; font-weight: 700; color: var(--slate-900); margin-bottom: 4px; }
.app-card-v2 .en {
  font-size: 10px; letter-spacing: 0.20em; color: var(--accent);
  font-weight: 700; margin-bottom: 14px;
}
.app-card-v2 p { font-size: 13.5px; line-height: 1.75; color: var(--slate-600); margin: 0; }
@media (max-width: 900px) { .app-grid-v2 { grid-template-columns: 1fr; } }

/* ─── Eco box ─── */
.eco-box {
  margin-top: 40px; padding: 32px 36px;
  background: linear-gradient(135deg, #0F2847 0%, #1A3556 100%);
  color: #fff; border-radius: 8px;
  display: grid; grid-template-columns: 70px 1fr; gap: 24px; align-items: start;
}
.eco-icon { font-size: 48px; }
.eco-box h3 {
  font-size: 18px; font-weight: 700; color: #fff;
  margin-bottom: 10px; letter-spacing: -0.01em;
}
.eco-box p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.82); margin-bottom: 14px; }
.eco-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.eco-tag {
  display: inline-block; padding: 4px 11px;
  background: rgba(212,169,62,0.18); color: var(--accent);
  font-size: 11px; font-weight: 700; letter-spacing: 0.06em;
  border: 1px solid rgba(212,169,62,0.35); border-radius: 3px;
}
@media (max-width: 700px) { .eco-box { grid-template-columns: 1fr; } }

/* ─── Design list v2 ─── */
.design-list-v2 { display: grid; gap: 18px; }
.design-item-v2 {
  display: grid; grid-template-columns: 36px 1fr; gap: 20px;
  background: var(--slate-50); border: 1px solid var(--slate-200);
  border-radius: 6px; padding: 22px 26px;
}
.design-item-v2 .check {
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--accent); color: #0A1B33;
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 14px;
}
.design-item-v2 h4 { font-size: 15px; font-weight: 700; color: var(--slate-900); margin-bottom: 8px; }
.design-item-v2 p { font-size: 13.5px; line-height: 1.75; color: var(--slate-600); margin: 0; }
.design-item-v2 p strong { color: var(--slate-900); font-weight: 700; }

/* ─── Compare table v2 ─── */
.compare-section {
  background: linear-gradient(135deg, #0A1B33 0%, #0F2847 100%);
  color: #fff; padding: 100px 0; border-bottom: none;
}
.compare-section .section-title { color: #fff; }
.compare-section .eyebrow { color: var(--accent); }
.compare-section .section-sub { color: rgba(255,255,255,0.5); }
.compare-section .section-divider {
  width: 60px; height: 3px; background: var(--accent); margin-top: 16px;
}
.compare-table-v2 {
  width: 100%; border-collapse: collapse; margin-top: 16px;
  background: rgba(255,255,255,0.04); border-radius: 6px; overflow: hidden;
  font-size: 14px;
}
.compare-table-v2 thead th {
  padding: 16px 18px; text-align: left;
  background: rgba(255,255,255,0.08); color: #fff;
  font-weight: 700; letter-spacing: 0.02em; font-size: 13px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
}
.compare-table-v2 tbody td {
  padding: 14px 18px; border-bottom: 1px solid rgba(255,255,255,0.07);
  color: rgba(255,255,255,0.80); vertical-align: middle;
}
.compare-table-v2 tbody tr:last-child td { border-bottom: none; }
.compare-table-v2 tbody td:first-child {
  font-weight: 700; color: rgba(255,255,255,0.65);
  width: 22%; white-space: nowrap;
}
.compare-table-v2 td.own {
  background: rgba(212,169,62,0.10); color: #fff; font-weight: 600;
  border-left: 2px solid var(--accent);
}

/* ─── CTA ─── */
.cta {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
  color: #fff; padding: 100px 0; border-bottom: none;
}
.cta .eyebrow { color: var(--accent); }
.cta .section-title { color: #fff; }
.cta-lead {
  font-size: 17px; color: rgba(255,255,255,0.80); line-height: 1.7;
  max-width: 640px; margin: 16px 0 48px;
}
.cta-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cta-card {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.10);
  border-radius: 8px; padding: 32px 28px; transition: all .25s ease;
  color: #fff;
}
.cta-card:hover {
  background: rgba(212,169,62,0.10); border-color: var(--accent);
  transform: translateY(-3px);
}
.cta-card .icon { font-size: 30px; margin-bottom: 16px; }
.cta-card .small {
  font-size: 10px; letter-spacing: 0.24em; color: var(--accent);
  font-weight: 800; margin-bottom: 10px;
}
.cta-card h4 { font-size: 19px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.cta-card p { font-size: 13.5px; line-height: 1.75; color: rgba(255,255,255,0.72); margin-bottom: 18px; }
.cta-card .link { font-size: 13px; color: var(--accent); font-weight: 700; }
@media (max-width: 900px) { .cta-grid { grid-template-columns: 1fr; } }

/* ─── Site nav (서브페이지 공통) ─── */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15,40,71,0.92); backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(255,255,255,0.07);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 16px; padding-bottom: 16px;
}
.logo-link { display: flex; align-items: baseline; gap: 8px; color: #fff; }
.logo-mark { color: var(--accent); font-weight: 800; font-size: 18px; letter-spacing: 0.04em; }
.logo-text { color: #fff; font-weight: 800; font-size: 16px; letter-spacing: 0.04em; }
.logo-tag {
  color: rgba(255,255,255,0.5); font-size: 10px; letter-spacing: 0.20em;
  margin-left: 6px; font-weight: 600;
}
.site-nav .nav-menu { display: flex; gap: 28px; list-style: none; align-items: center; margin: 0; padding: 0; }
.site-nav .nav-menu a {
  color: rgba(255,255,255,0.80); font-size: 13px; font-weight: 600;
  letter-spacing: 0.04em; transition: color .2s;
}
.site-nav .nav-menu a:hover { color: var(--accent); }
.site-nav .nav-menu .nav-cta {
  padding: 8px 16px; background: var(--accent); color: #0A1B33;
  border-radius: 4px; font-weight: 700;
}
.site-nav .nav-menu .nav-cta:hover { background: var(--accent-deep); color: #fff; }
@media (max-width: 700px) {
  .site-nav .logo-tag { display: none; }
  .site-nav .nav-menu { gap: 14px; }
  .site-nav .nav-menu a { font-size: 12px; }
}

/* v3.5.2 · casing badge */
.casing-num { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.casing-badge {
  display: inline-block;
  background: var(--sky-bg, #E0F2FE);
  color: var(--sky);
  font-size: 9px;
  letter-spacing: 0.18em;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 3px;
  text-transform: uppercase;
}

/* ===== AEROCLAD NAV UNIFIED v4.0.3 (collision-proof) =====
   Higher specificity (nav > .nav-inner > .nav-menu) + explicit color overrides.
   This block intentionally beats any legacy .site-nav or .nav-menu rule. */
body > nav,
nav.aeroclad-nav {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,0.96) !important;
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
}
nav > .nav-inner,
nav .container.nav-inner {
  display: flex !important; align-items: center; justify-content: space-between;
  padding: 16px 24px; max-width: 1280px; margin: 0 auto; gap: 24px;
}
nav .nav-logo {
  font-size: 19px; font-weight: 800;
  color: var(--navy) !important;
  letter-spacing: -0.01em; white-space: nowrap;
}
nav .nav-logo span {
  font-size: 11px; font-weight: 500;
  color: var(--slate-500) !important;
  margin-left: 4px; letter-spacing: 0.05em;
}
nav ul.nav-menu {
  display: flex !important; gap: 22px;
  list-style: none !important;
  align-items: center; margin: 0; padding: 0;
}
nav ul.nav-menu > li { display: inline-flex; list-style: none !important; margin: 0; padding: 0; }
nav ul.nav-menu > li::marker { content: ""; }
nav ul.nav-menu a {
  font-size: 14px; font-weight: 600;
  color: var(--slate-700) !important;
  letter-spacing: 0; padding: 6px 2px;
  transition: color .2s; white-space: nowrap; text-decoration: none;
}
nav ul.nav-menu a:hover { color: var(--navy) !important; }
nav ul.nav-menu a.active {
  color: var(--navy) !important; font-weight: 800; position: relative;
}
nav ul.nav-menu a.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -8px;
  height: 2px; background: var(--navy); border-radius: 2px;
}
nav ul.nav-menu a.nav-cta {
  background: var(--navy) !important; color: #fff !important;
  padding: 9px 18px; border-radius: 6px; font-weight: 700;
  letter-spacing: 0.01em;
}
nav ul.nav-menu a.nav-cta:hover { background: #1a3a63 !important; color: #fff !important; }
nav ul.nav-menu a.nav-cta.active::after { display: none; }
nav .mobile-menu-toggle {
  background: transparent; border: none;
  color: var(--navy) !important; cursor: pointer; padding: 6px;
}
/* mobile drawer link colors (also need to win over legacy rules) */
nav .mobile-menu-drawer a {
  color: var(--slate-700) !important; text-decoration: none;
}
nav .mobile-menu-drawer a.active { color: var(--navy) !important; font-weight: 800; }
nav .mobile-menu-drawer a.nav-cta-mobile { color: #fff !important; }
/* ===== /NAV UNIFIED v4.0.3 ===== */

/* ===== AEROCLAD SMOKE DUCT GALLERY + IMAGE CARDS v4.0.1 ===== */
.app-card-img { padding: 0 !important; overflow: hidden; display: flex; flex-direction: column; }
.app-card-img .app-card-image { width: 100%; aspect-ratio: 16 / 9; overflow: hidden; background: var(--slate-100); }
.app-card-img .app-card-image img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s ease; }
.app-card-img:hover .app-card-image img { transform: scale(1.04); }
.app-card-img .app-card-body { padding: 22px 24px 26px; }
.app-card-img .app-card-body .icon { font-size: 22px; margin-bottom: 4px; }
.app-card-img .app-card-body h4 { margin: 4px 0 2px; font-size: 18px; font-weight: 800; color: var(--navy); letter-spacing: -0.01em; }
.app-card-img .app-card-body .en { font-size: 11px; letter-spacing: 0.14em; color: var(--slate-500); font-weight: 600; margin-bottom: 10px; }
.app-card-img .app-card-body p { font-size: 14px; line-height: 1.65; color: var(--slate-700); margin: 0; }

.gallery-section { background: linear-gradient(180deg, #fafbfc 0%, #f4f6f9 100%); }
.gallery-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 28px; }
.gallery-item { margin: 0; border-radius: 10px; overflow: hidden; background: #fff; box-shadow: 0 4px 14px -8px rgba(15,40,71,0.18); transition: transform .3s ease, box-shadow .3s ease; }
.gallery-item:hover { transform: translateY(-3px); box-shadow: 0 12px 28px -14px rgba(15,40,71,0.28); }
.gallery-item img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; display: block; }
.gallery-item figcaption { padding: 12px 16px 16px; font-size: 13px; color: var(--slate-700); line-height: 1.55; }
.gallery-item figcaption strong { color: var(--navy); font-weight: 800; }
.gallery-item-wide { grid-column: span 2; }
@media (max-width: 1024px) {
  .gallery-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery-item-wide { grid-column: span 2; }
}
@media (max-width: 640px) {
  .gallery-grid { grid-template-columns: 1fr; }
  .gallery-item-wide { grid-column: span 1; }
}
/* ===== /SMOKE DUCT GALLERY ===== */