/* =====================================================================
   Shimond ver5 — Golden Warm Luxury
   Design system + all component styles
   ===================================================================== */

/* ─────────────────────────  DESIGN TOKENS  ───────────────────────── */
:root {
  /* Color */
  --c-base: #F9F5ED;
  --c-ink: #02283A;
  --c-ink-soft: #0A3D54;
  --c-accent: #C8A95A;
  --c-accent-dark: #A8893A;
  --c-accent-light: #F5EDD8;
  --c-steel: #5A6B7B;
  --c-steel-light: #8B9DAD;
  --c-border: #E5DFD0;
  --c-surface: #FFFFFF;
  --c-dark: #02283A;

  /* Typography */
  --font-display: 'Space Grotesk', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', Consolas, monospace;

  /* Spacing scale (4px base) */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;

  /* Layout */
  --container-max: 1280px;
  --container-pad: 1.5rem;
  --header-h: 72px;

  /* Transitions */
  --t-fast: 150ms ease;
  --t-base: 250ms ease;
  --t-slow: 400ms ease;
}

/* ─────────────────────────  RESET / BASE  ───────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--c-base);
  color: var(--c-ink);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
ul { list-style: none; }
input, textarea, select { font-family: inherit; font-size: inherit; }

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

/* ─────────────────────────  LAYOUT  ───────────────────────── */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.section {
  padding: var(--sp-20) 0;
}

.section--surface { background: var(--c-surface); }
.section--dark { background: var(--c-dark); color: #fff; }

/* ─────────────────────────  TYPOGRAPHY  ───────────────────────── */
.section-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--c-steel);
  display: block;
  margin-bottom: var(--sp-3);
}

.section-num--light { color: var(--c-steel-light); }
.section-num--accent { color: var(--c-accent); }

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.8rem;
  border: 1px solid var(--c-ink);
  color: var(--c-ink);
  margin-bottom: var(--sp-4);
}

.badge--accent {
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: var(--sp-4);
}

.section-title--light { color: #fff; }
.section-title--left { text-align: left; }

.section-sub {
  font-size: 1.05rem;
  color: var(--c-steel);
  max-width: 640px;
  margin: 0 auto;
}

.section-head {
  text-align: center;
  margin-bottom: var(--sp-12);
}

.section-head--light .section-sub { color: var(--c-steel-light); }

/* ─────────────────────────  BUTTONS  ───────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.7rem 1.5rem;
  border: 1px solid transparent;
  transition: all var(--t-fast);
  cursor: pointer;
  border-radius: 2px;
  white-space: nowrap;
}

.btn svg { width: 18px; height: 18px; flex-shrink: 0; }

.btn--accent {
  background: var(--c-accent);
  color: #fff;
  border-color: var(--c-accent);
}
.btn--accent:hover { background: var(--c-accent-dark); border-color: var(--c-accent-dark); }

.btn--dark {
  background: var(--c-ink);
  color: #fff;
  border-color: var(--c-ink);
}
.btn--dark:hover { background: var(--c-ink-soft); }

.btn--outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}
.btn--outline-light:hover { border-color: #fff; background: rgba(255,255,255,0.08); }

.btn--lg { padding: 0.95rem 2rem; font-size: 1.05rem; }
.btn--block { display: flex; justify-content: center; width: 100%; }

/* ─────────────────────────  HEADER  ───────────────────────── */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: all var(--t-base);
  background: transparent;
}

.site-header.is-scrolled {
  background: var(--c-surface);
  border-bottom: 1px solid var(--c-border);
}

.header-inner {
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: #fff;
  transition: color var(--t-base);
  flex-shrink: 0;
}

.site-header.is-scrolled .logo { color: var(--c-ink); }

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: var(--c-accent);
  color: #fff;
  font-size: 1.1rem;
  border-radius: 2px;
  flex-shrink: 0;
}

.logo-text { letter-spacing: -0.01em; }

.logo--light { color: #fff; }

/* Desktop nav */
.nav {
  display: flex;
  gap: var(--sp-8);
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  transition: color var(--t-fast);
  position: relative;
  padding: 0.25rem 0;
}

.site-header.is-scrolled .nav-link { color: var(--c-steel); }
.site-header.is-scrolled .nav-link.is-active,
.nav-link.is-active { color: var(--c-accent); }
.site-header.is-scrolled .nav-link.is-active { color: var(--c-accent); }
.nav-link:hover { color: var(--c-accent); }

.nav-link.is-active::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--c-accent);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}

.icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  color: rgba(255,255,255,0.85);
  transition: color var(--t-fast);
  border-radius: 2px;
}

.site-header.is-scrolled .icon-btn { color: var(--c-steel); }
.icon-btn:hover { color: var(--c-accent); }
.icon-btn svg { width: 20px; height: 20px; }

/* Language switcher */
.lang-switch { position: relative; }

.lang-trigger {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 2px;
  transition: all var(--t-fast);
}

.site-header.is-scrolled .lang-trigger {
  color: var(--c-steel);
  border-color: var(--c-border);
}

.lang-trigger:hover { border-color: var(--c-accent); color: var(--c-accent); }
.lang-trigger svg { width: 16px; height: 16px; }
.lang-trigger .chev { transition: transform var(--t-fast); }
.lang-switch.is-open .chev { transform: rotate(180deg); }

.lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 150px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: all var(--t-fast);
  z-index: 110;
}

.lang-switch.is-open .lang-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.6rem 1rem;
  font-size: 0.85rem;
  color: var(--c-ink);
  text-align: left;
  transition: background var(--t-fast);
}

.lang-option:hover { background: var(--c-accent-light); }
.lang-option.is-active { color: var(--c-accent); font-weight: 600; }
.lang-flag { font-size: 1.1rem; line-height: 1; }

/* Mobile toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px; height: 38px;
}

.menu-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: #fff;
  transition: all var(--t-fast);
  margin: 0 auto;
}

.site-header.is-scrolled .menu-toggle span { background: var(--c-ink); }

.menu-toggle.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.menu-toggle.is-open span:nth-child(2) { opacity: 0; }
.menu-toggle.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile nav drawer */
.mobile-nav {
  position: fixed;
  top: 0; right: 0;
  width: 300px;
  max-width: 85vw;
  height: 100vh;
  background: var(--c-ink);
  z-index: 99;
  transform: translateX(100%);
  transition: transform var(--t-base);
  overflow-y: auto;
  padding-top: var(--header-h);
}

.mobile-nav.is-open { transform: translateX(0); }

.mobile-nav-inner {
  padding: var(--sp-6) var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}

.mobile-nav .nav-link {
  color: rgba(255,255,255,0.85);
  font-size: 1.1rem;
  font-weight: 500;
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.mobile-nav .nav-link:hover { color: var(--c-accent); }

.mobile-lang-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.mobile-lang-grid .lang-option {
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.15);
  justify-content: center;
  padding: 0.7rem;
}

.mobile-lang-grid .lang-option:hover { border-color: var(--c-accent); background: rgba(200,169,90,0.1); }
.mobile-lang-grid .lang-option.is-active { color: var(--c-accent); border-color: var(--c-accent); }

/* ─────────────────────────  HERO  ───────────────────────── */
.hero {
  position: relative;
  background: var(--c-dark);
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-h) + var(--sp-12)) 0 var(--sp-16);
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200,169,90,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,169,90,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: var(--container-max);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--container-pad);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: center;
}

.hero-copy { max-width: 580px; }

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 2px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.9);
  margin: var(--sp-4) 0 var(--sp-6);
}

.hero-eyebrow .dot {
  width: 8px; height: 8px;
  background: var(--c-accent);
  border-radius: 2px;
  flex-shrink: 0;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin-bottom: var(--sp-5);
}

.hero-title-accent {
  display: block;
  color: var(--c-accent);
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--c-steel-light);
  margin-bottom: var(--sp-8);
}

.hero-cta-row {
  display: flex;
  gap: var(--sp-3);
  margin-bottom: var(--sp-10);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: var(--sp-8);
  padding-top: var(--sp-6);
  border-top: 1px solid rgba(255,255,255,0.12);
}

.hero-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  color: var(--c-accent);
  line-height: 1;
}

.hero-stat-label {
  font-size: 0.82rem;
  color: var(--c-steel-light);
  margin-top: 0.3rem;
}

/* Hero visual */
.hero-visual {
  position: relative;
}

.hero-media {
  position: relative;
  border: 1px solid rgba(200,169,90,0.3);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.hero-media img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.cert-chip {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--c-surface);
  padding: 0.7rem 1rem;
  border: 1px solid var(--c-border);
  border-radius: 2px;
  min-width: 180px;
}

.cert-chip strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--c-ink);
}

.cert-chip span {
  font-size: 0.72rem;
  color: var(--c-steel);
}

.cert-ic {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px; height: 36px;
  background: var(--c-accent-light);
  color: var(--c-accent);
  border-radius: 2px;
  flex-shrink: 0;
}

.cert-ic svg { width: 20px; height: 20px; }

.cert-chip--1 { top: -20px; bottom: auto; left: -20px; }
.cert-chip--2 { top: auto; bottom: 60px; right: -20px; }
.cert-chip--3 { top: auto; bottom: -20px; left: 30px; }

/* ─────────────────────────  TRUST MARQUEE  ───────────────────────── */
.trust-bar {
  background: var(--c-ink);
  border-top: 2px solid var(--c-accent);
  overflow: hidden;
  padding: 0.9rem 0;
}

.marquee {
  display: flex;
  gap: 3rem;
  white-space: nowrap;
  animation: marquee 30s linear infinite;
}

.marquee span {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--c-steel-light);
  text-transform: uppercase;
  flex-shrink: 0;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ─────────────────────────  PRODUCTS  ───────────────────────── */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
}

.product-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  overflow: hidden;
  transition: border-color var(--t-base);
  display: flex;
  flex-direction: column;
}

.product-card:hover { border-color: var(--c-accent); }

.product-media {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.product-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: opacity var(--t-base);
}

.product-tag {
  position: absolute;
  top: 0; left: 0;
  background: var(--c-accent);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.7rem;
  text-transform: uppercase;
}

.product-body {
  padding: var(--sp-5);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: var(--sp-2);
}

.product-desc {
  font-size: 0.9rem;
  color: var(--c-steel);
  line-height: 1.6;
  margin-bottom: var(--sp-4);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex-grow: 1;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--c-ink);
  transition: color var(--t-fast);
}

.product-link svg { width: 16px; height: 16px; transition: transform var(--t-fast); }
.product-link:hover { color: var(--c-accent); }
.product-link:hover svg { transform: translateX(4px); }

/* ─────────────────────────  FEATURES  ───────────────────────── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
}

.feature-card {
  background: var(--c-base);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  padding: var(--sp-6) var(--sp-5);
  position: relative;
  transition: border-color var(--t-base);
}

.feature-card:hover { border-color: var(--c-accent); }

.feature-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--c-steel-light);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: var(--sp-4);
}

.feature-ic {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px; height: 48px;
  background: var(--c-accent-light);
  color: var(--c-accent);
  border-radius: 2px;
  margin-bottom: var(--sp-4);
}

.feature-ic svg { width: 24px; height: 24px; }

.feature-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--sp-2);
  letter-spacing: -0.01em;
}

.feature-desc {
  font-size: 0.88rem;
  color: var(--c-steel);
  line-height: 1.6;
}

/* ─────────────────────────  ABOUT  ───────────────────────── */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--sp-12);
  align-items: center;
  margin-bottom: var(--sp-16);
}

.about-copy p {
  color: var(--c-steel);
  margin-bottom: var(--sp-4);
  font-size: 1rem;
  line-height: 1.7;
}

.about-copy .btn { margin-top: var(--sp-4); }

.about-visual { position: relative; }

.about-media {
  position: relative;
  aspect-ratio: 1/1;
  overflow: hidden;
  border: 1px solid var(--c-border);
}

.about-media::before {
  content: '';
  position: absolute;
  top: -8px; left: -8px;
  width: 60px; height: 60px;
  border-top: 3px solid var(--c-accent);
  border-left: 3px solid var(--c-accent);
  z-index: 2;
}

.about-media img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.culture-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-4);
}

.culture-card {
  border: 1px solid var(--c-border);
  padding: var(--sp-5) var(--sp-4);
  border-radius: 2px;
  background: var(--c-surface);
  transition: border-color var(--t-base);
}

.culture-card:hover { border-color: var(--c-accent); }

.culture-card h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--c-accent);
  margin-bottom: var(--sp-2);
}

.culture-card p {
  font-size: 0.85rem;
  color: var(--c-steel);
  line-height: 1.5;
}

/* ─────────────────────────  PRODUCTION  ───────────────────────── */
.production-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-10);
  align-items: start;
}

.production-media {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.15);
}

.production-media img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.production-desc {
  color: var(--c-steel-light);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--sp-6);
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
  padding: var(--sp-5) 0;
  border-top: 1px solid rgba(255,255,255,0.12);
  border-bottom: 1px solid rgba(255,255,255,0.12);
}

.metric-val {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 2.5vw, 1.8rem);
  font-weight: 600;
  color: var(--c-accent);
  line-height: 1.1;
}

.metric-label {
  font-size: 0.78rem;
  color: var(--c-steel-light);
  margin-top: 0.3rem;
}

.unit-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3);
}

.unit {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 2px;
  transition: border-color var(--t-fast);
}

.unit:hover { border-color: var(--c-accent); }

.unit-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--c-accent);
}

.unit-name {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
}

/* ─────────────────────────  GALLERY  ───────────────────────── */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-5);
  margin-bottom: var(--sp-16);
}

.scene-card {
  position: relative;
  aspect-ratio: 1/1;
  overflow: hidden;
  border: 1px solid var(--c-border);
  cursor: pointer;
}

.scene-card img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}

.scene-card:hover img { transform: scale(1.05); }

.scene-cap {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: var(--sp-5) var(--sp-4) var(--sp-4);
  background: linear-gradient(to top, rgba(2,40,58,0.9), transparent);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.scene-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
}

.scene-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-accent);
}

.pattern-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--sp-3);
}

.pattern-card {
  position: relative;
  aspect-ratio: 1/1;
  overflow: hidden;
  border: 1px solid var(--c-border);
  cursor: pointer;
  transition: border-color var(--t-fast);
}

.pattern-card:hover { border-color: var(--c-accent); }

.pattern-card img {
  width: 100%; height: 100%;
  object-fit: cover;
}

.pattern-cap {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  padding: var(--sp-3) var(--sp-2);
  background: linear-gradient(to top, rgba(2,40,58,0.9), transparent);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.pattern-name {
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
}

.pattern-code {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--c-accent);
}

/* ─────────────────────────  CONTACT  ───────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--sp-8);
  align-items: start;
}

.contact-form {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  padding: var(--sp-8);
  border-radius: 2px;
  position: relative;
}

.form-success {
  display: none;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4);
  background: var(--c-accent-light);
  border: 1px solid var(--c-accent);
  border-radius: 2px;
  margin-bottom: var(--sp-5);
}

.form-success.is-visible { display: flex; }

.form-success svg {
  width: 28px; height: 28px;
  color: var(--c-accent);
  flex-shrink: 0;
}

.form-success strong {
  display: block;
  font-size: 0.95rem;
  color: var(--c-ink);
}

.form-success-text {
  font-size: 0.85rem;
  color: var(--c-steel);
}

.form-row {
  margin-bottom: var(--sp-4);
}

.form-row--2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}

.field { display: flex; flex-direction: column; }

.field label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--c-ink);
  margin-bottom: 0.4rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.field input,
.field select,
.field textarea {
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--c-border);
  border-radius: 2px;
  background: var(--c-base);
  color: var(--c-ink);
  font-size: 0.9rem;
  transition: border-color var(--t-fast);
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  background: var(--c-surface);
}

.field input:invalid:not(:placeholder-shown) { border-color: var(--c-accent-dark); }

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.info-card {
  display: flex;
  gap: var(--sp-4);
  padding: var(--sp-5);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  transition: border-color var(--t-fast);
}

.info-card:hover { border-color: var(--c-accent); }

.info-ic {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px; height: 44px;
  background: var(--c-accent-light);
  color: var(--c-accent);
  border-radius: 2px;
  flex-shrink: 0;
}

.info-ic svg { width: 22px; height: 22px; }

.info-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--c-steel);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.3rem;
}

.info-value {
  font-size: 0.88rem;
  color: var(--c-ink);
  line-height: 1.5;
}

.hotline-card {
  padding: var(--sp-5);
  background: var(--c-ink);
  border-radius: 2px;
  text-align: center;
}

.hotline-label {
  font-size: 0.78rem;
  color: var(--c-steel-light);
  margin-bottom: 0.3rem;
}

.hotline-num {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--c-accent);
  letter-spacing: 0.02em;
}

/* ─────────────────────────  FOOTER  ───────────────────────── */
.site-footer {
  background: var(--c-dark);
  color: rgba(255,255,255,0.7);
  padding: var(--sp-16) 0 var(--sp-6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-10);
}

.footer-brand .logo { margin-bottom: var(--sp-4); }

.footer-desc {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.6;
  margin-bottom: var(--sp-5);
  max-width: 300px;
}

.footer-social {
  display: flex;
  gap: var(--sp-2);
}

.footer-social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 2px;
  color: rgba(255,255,255,0.7);
  transition: all var(--t-fast);
}

.footer-social a:hover { border-color: var(--c-accent); color: var(--c-accent); }
.footer-social svg { width: 18px; height: 18px; }

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: var(--sp-4);
}

.footer-col ul li { margin-bottom: var(--sp-2); }

.footer-col ul li a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  transition: color var(--t-fast);
}

.footer-col ul li a:hover { color: var(--c-accent); }

.footer-contact-item {
  display: flex;
  gap: 0.6rem;
  margin-bottom: var(--sp-3);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.5;
}

.footer-contact-item svg {
  width: 18px; height: 18px;
  color: var(--c-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--sp-5);
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
}

.footer-version {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* ─────────────────────────  SCROLL REVEAL  ───────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }
.reveal[data-delay="4"] { transition-delay: 0.4s; }

/* ─────────────────────────  RTL (Arabic)  ───────────────────────── */
[dir="rtl"] .nav { flex-direction: row-reverse; }

[dir="rtl"] .header-inner { flex-direction: row-reverse; }

[dir="rtl"] .hero-cta-row { flex-direction: row-reverse; }

[dir="rtl"] .hero-stats { flex-direction: row-reverse; }

[dir="rtl"] .lang-menu { right: auto; left: 0; }

[dir="rtl"] .product-link svg,
[dir="rtl"] .btn svg { transform: scaleX(-1); }

[dir="rtl"] .product-link:hover svg { transform: scaleX(-1) translateX(4px); }

[dir="rtl"] .mobile-nav { right: auto; left: 0; transform: translateX(-100%); }
[dir="rtl"] .mobile-nav.is-open { transform: translateX(0); }

[dir="rtl"] .product-tag { left: auto; right: 0; }

[dir="rtl"] .cert-chip--1 { left: auto; right: -20px; }
[dir="rtl"] .cert-chip--2 { top: auto; right: auto; left: -20px; }
[dir="rtl"] .cert-chip--3 { left: auto; right: 30px; }

[dir="rtl"] .about-media::before {
  left: auto; right: -8px;
  border-left: none;
  border-right: 3px solid var(--c-accent);
}

[dir="rtl"] .marquee { animation-direction: reverse; }

[dir="rtl"] body { text-align: right; }

[dir="rtl"] .section-head { text-align: center; }

[dir="rtl"] .footer-bottom { flex-direction: row-reverse; }

[dir="rtl"] .footer-social { flex-direction: row-reverse; }

/* ─────────────────────────  RESPONSIVE  ───────────────────────── */

/* Tablet (≤1024px) */
@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: var(--sp-8); }
  .hero-visual { max-width: 500px; margin: 0 auto; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: var(--sp-8); }
  .about-visual { max-width: 500px; }
  .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .production-grid { grid-template-columns: 1fr; gap: var(--sp-6); }
  .pattern-grid { grid-template-columns: repeat(4, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
  .footer-brand { grid-column: 1 / -1; }
}

/* Mobile (≤768px) */
@media (max-width: 768px) {
  .nav, .header-actions .btn, .header-actions .icon-btn, .lang-switch { display: none; }
  .menu-toggle { display: flex; }
  
  .section { padding: var(--sp-12) 0; }
  .section-head { margin-bottom: var(--sp-8); }
  
  .hero { min-height: auto; padding-top: calc(var(--header-h) + var(--sp-8)); padding-bottom: var(--sp-12); }
  .hero-title { font-size: 2.2rem; }
  .hero-sub { font-size: 1rem; }
  .hero-cta-row { flex-direction: column; align-items: stretch; }
  .hero-cta-row .btn { justify-content: center; }
  .hero-stats { gap: var(--sp-4); flex-wrap: wrap; }
  .hero-stat-num { font-size: 1.3rem; }
  .hero-stat-label { font-size: 0.75rem; }
  
  .hero-visual { max-width: 100%; }
  .cert-chip { min-width: auto; padding: 0.5rem 0.7rem; }
  .cert-chip strong { font-size: 0.72rem; }
  .cert-chip span { font-size: 0.65rem; }
  .cert-ic { width: 28px; height: 28px; }
  .cert-ic svg { width: 16px; height: 16px; }
  .cert-chip--1 { top: -12px; bottom: auto; left: -8px; }
  .cert-chip--2 { top: auto; bottom: 40px; right: -8px; }
  .cert-chip--3 { top: auto; bottom: -12px; left: 16px; }
  
  .products-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .culture-grid { grid-template-columns: 1fr; }
  .scene-grid { grid-template-columns: 1fr; }
  .pattern-grid { grid-template-columns: repeat(3, 1fr); }
  
  .metric-row { grid-template-columns: 1fr; gap: var(--sp-3); }
  .unit-grid { grid-template-columns: 1fr; }
  
  .form-row--2 { grid-template-columns: 1fr; }
  .contact-form { padding: var(--sp-5); }
  
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: var(--sp-2); text-align: center; }
}

/* Small mobile (≤375px) */
@media (max-width: 375px) {
  :root { --container-pad: 1rem; }
  .hero-title { font-size: 1.9rem; }
  .pattern-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { flex-direction: column; gap: var(--sp-3); }
}

/* ─────────────────────────  REDUCED MOTION  ───────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  
  .reveal {
    opacity: 1;
    transform: none;
  }
  
  .marquee { animation: none; }
  
  .scene-card:hover img { transform: none; }
}

/* ════════════════════════════════════════════════════════════════════
   PAGE HERO (sub-pages)
   ════════════════════════════════════════════════════════════════════ */
.page-hero {
  position: relative;
  background: var(--c-dark);
  color: #fff;
  padding: calc(var(--header-h) + var(--sp-16)) 0 var(--sp-16);
  overflow: hidden;
}
.page-hero-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(200,169,90,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200,169,90,.05) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.page-hero .container { position: relative; text-align: center; }
.page-hero .section-num { margin-bottom: var(--sp-3); }
.page-hero .badge { margin-bottom: var(--sp-4); }
.page-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin: 0 0 var(--sp-4);
}
.page-sub {
  font-size: 1.1rem;
  color: var(--c-steel-light);
  max-width: 640px;
  margin: 0 auto;
}
/* Content pages without a dark hero (detail pages, inquiry, etc.)
   — clears the fixed header so content isn't hidden behind it. */
.page-body {
  padding-top: calc(var(--header-h) + 2rem);
}

/* ════════════════════════════════════════════════════════════════════
   CASE CARD
   ════════════════════════════════════════════════════════════════════ */
.case-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  overflow: hidden;
  transition: border-color var(--t-base);
}
.case-card:hover { border-color: var(--c-accent); }
.case-media { aspect-ratio: 4/3; overflow: hidden; }
.case-media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow); }
.case-card:hover .case-media img { transform: scale(1.05); }
.case-body { padding: var(--sp-5); }
.case-client {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-accent);
  text-transform: uppercase;
  margin-bottom: var(--sp-2);
}
.case-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--c-ink);
  margin: 0 0 var(--sp-2);
  line-height: 1.3;
}
.case-desc {
  font-size: 0.9rem;
  color: var(--c-steel);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ════════════════════════════════════════════════════════════════════
   NEWS CARD
   ════════════════════════════════════════════════════════════════════ */
.news-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  overflow: hidden;
  transition: border-color var(--t-base);
}
.news-card:hover { border-color: var(--c-accent); }
.news-media { aspect-ratio: 3/2; overflow: hidden; }
.news-media img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--t-slow); }
.news-card:hover .news-media img { transform: scale(1.05); }
.news-body { padding: var(--sp-5); }
.news-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-steel-light);
  margin-bottom: var(--sp-2);
  display: flex;
  gap: var(--sp-2);
  align-items: center;
}
.news-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--c-ink);
  margin: 0 0 var(--sp-2);
  line-height: 1.3;
}
.news-desc {
  font-size: 0.9rem;
  color: var(--c-steel);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: var(--sp-3);
}
.news-tags { display: flex; flex-wrap: wrap; gap: var(--sp-1); }
.news-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 2px 8px;
  background: var(--c-accent-light);
  color: var(--c-accent-dark);
  border-radius: 1px;
}

/* ════════════════════════════════════════════════════════════════════
   CTA SECTION
   ════════════════════════════════════════════════════════════════════ */
.cta-section { text-align: center; padding: var(--sp-16) 0; }
.cta-inner { max-width: 640px; margin: 0 auto; }
.cta-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 var(--sp-3);
}
.cta-desc {
  font-size: 1.05rem;
  color: var(--c-steel-light);
  margin: 0 0 var(--sp-6);
}

/* ════════════════════════════════════════════════════════════════════
   ADVANTAGE CARDS (about page)
   ════════════════════════════════════════════════════════════════════ */
.advantage-card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  padding: var(--sp-8);
}
.advantage-card .feature-num { margin-bottom: var(--sp-4); }
.advantage-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 var(--sp-3);
  color: var(--c-ink);
}
.advantage-card p { color: var(--c-steel); line-height: 1.7; }

/* ════════════════════════════════════════════════════════════════════
   STATS ROW (cases page)
   ════════════════════════════════════════════════════════════════════ */
.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-8);
  text-align: center;
}
.stat-item .stat-val {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--c-accent);
}
.stat-item .stat-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-steel-light);
  margin-top: var(--sp-1);
}
@media (max-width: 768px) {
  .stats-row { grid-template-columns: 1fr; gap: var(--sp-6); }
}

/* ════════════════════════════════════════════════════════════════════
   CERT / CAPACITY ITEMS (about dark section)
   ════════════════════════════════════════════════════════════════════ */
.cert-item {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 2px;
  padding: var(--sp-4) var(--sp-5);
}
.cert-ic {
  width: 48px; height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(200,169,90,.15);
  color: var(--c-accent);
  border-radius: 2px;
}
.cert-ic svg { width: 24px; height: 24px; }
.cert-text { color: #fff; font-weight: 500; font-size: 1rem; }

/* ════════════════════════════════════════════════════════════════════
   CONTACT INFO CARD (about page)
   ════════════════════════════════════════════════════════════════════ */
.contact-info-card {
  background: var(--c-dark);
  color: #fff;
  border-radius: 2px;
  padding: var(--sp-8);
}
.contact-info-card .hotline-label {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--c-steel-light);
  margin-bottom: var(--sp-2);
}
.contact-info-card .hotline-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--c-accent);
  margin-bottom: var(--sp-6);
}
.contact-info-card .info-line {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
  color: rgba(255,255,255,.85);
  font-size: 0.95rem;
}
.contact-info-card .info-line svg {
  width: 18px; height: 18px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--c-accent);
}

/* ════════════════════════════════════════════════════════════════════
   PAGE GRID (2-col layout for about page sections)
   ════════════════════════════════════════════════════════════════════ */
.page-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-12);
  align-items: center;
}
@media (max-width: 768px) {
  .page-grid { grid-template-columns: 1fr; gap: var(--sp-6); }
}

/* ════════════════════════════════════════════════════════════════════
   LIST GRID (products/cases/news)
   ════════════════════════════════════════════════════════════════════ */
.list-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}
@media (max-width: 1024px) {
  .list-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .list-grid { grid-template-columns: 1fr; }
}