/* ===========================================================
   UUUUU INC. — Corporate Website Stylesheet
   Design direction: premium, minimal, global K-beauty.
   White base, soft beige/pink accents, black type, gel gradients.
   =========================================================== */

:root {
  /* ---- Color palette ---- */
  --color-bg: #ffffff;
  --color-bg-alt: #FBF5F3;
  --color-pink-50: #FDF1EF;
  --color-pink-100: #F9DEDC;
  --color-pink-200: #F3C6C4;
  --color-accent: #B3273C;
  --color-accent-dark: #8A1E2F;
  --color-text: #161513;
  --color-text-muted: #5C5652;
  --color-text-soft: #8A8480;
  --color-border: #E8E1DC;
  --color-card-bg: #F7F2EF;

  /* ---- Type ---- */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;

  /* ---- Layout ---- */
  --container-w: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --transition: 0.35s cubic-bezier(.4,0,.2,1);
}

/* ===================== RESET ===================== */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 1rem; }

.container {
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===================== TYPOGRAPHY ===================== */
h1, h2, h3, h4 {
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
}

h2 { font-size: clamp(1.9rem, 3.4vw, 2.75rem); }
h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; }

.eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.9rem;
  display: block;
}

.lead { font-size: 1.15rem; color: var(--color-text); margin-bottom: 1.25rem; }

.section-desc {
  max-width: 680px;
  color: var(--color-text-muted);
  font-size: 1.02rem;
  margin-top: 1rem;
}

/* ===================== BUTTONS ===================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.95rem 2rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-text);
  color: #fff;
}
.btn-primary:hover { background: var(--color-accent); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-text);
}
.btn-outline:hover {
  background: var(--color-text);
  color: #fff;
  transform: translateY(-2px);
}

.btn-full { width: 100%; }

/* ===================== HEADER / NAV ===================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.site-header.scrolled {
  background: rgba(255,255,255,0.92);
  border-bottom-color: var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.logo {
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
}
.logo-dot { color: var(--color-accent); }
.logo-inc { font-weight: 400; font-style: italic; font-size: 1.1rem; margin-left: 4px; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 2.1rem;
}
.main-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}
.main-nav a:hover { color: var(--color-accent); }
.main-nav a.nav-cta {
  background: var(--color-text);
  color: #fff;
  padding: 0.6rem 1.3rem;
  border-radius: 999px;
}
.main-nav a.nav-cta:hover { background: var(--color-accent); }
.main-nav a.lang-switch {
  border: 1.5px solid var(--color-border);
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.85rem;
}
.main-nav a.lang-switch:hover { border-color: var(--color-accent); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px; height: 40px;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 24px;
  background: var(--color-text);
  transition: var(--transition);
  margin: 0 auto;
}

/* ===================== HERO ===================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}
.hero-bg-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,0.15) 0%, rgba(255,255,255,0.55) 85%, #fff 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding-top: 96px;
  width: 100%;
  max-width: 780px;
}

.hero-title {
  font-size: clamp(2.4rem, 5.4vw, 4.2rem);
  margin-bottom: 1.4rem;
  color: var(--color-text);
}

.hero-sub {
  font-size: clamp(1.05rem, 1.6vw, 1.3rem);
  color: var(--color-text-muted);
  max-width: 620px;
  margin-bottom: 2.2rem;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.8rem;
}

.hero-trust {
  font-size: 0.9rem;
  color: var(--color-text-soft);
  font-style: italic;
}

.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  width: 26px;
  height: 42px;
  border: 1.5px solid var(--color-text-soft);
  border-radius: 20px;
  z-index: 1;
}
.scroll-indicator span {
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  border-radius: 2px;
  background: var(--color-accent);
  animation: scrollDown 1.8s infinite;
}
@keyframes scrollDown {
  0% { opacity: 1; top: 8px; }
  70% { opacity: 0; top: 22px; }
  100% { opacity: 0; top: 22px; }
}

/* ===================== SECTIONS (generic) ===================== */
.section {
  padding: 7rem 0;
  position: relative;
}
.section-alt { background: var(--color-bg-alt); }

.section-head { max-width: 760px; margin-bottom: 3.2rem; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===================== ABOUT ===================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3.5rem;
  margin-bottom: 3.5rem;
}

.vmv {
  display: grid;
  gap: 1.4rem;
  margin-top: 2.2rem;
}
.vmv-item {
  border-left: 3px solid var(--color-accent);
  padding-left: 1.1rem;
}
.vmv-item h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.vmv-item p { color: var(--color-text-muted); font-size: 0.95rem; }

.about-facts {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-content: start;
}
.fact-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.3rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}
.fact-num { font-size: 1.4rem; font-weight: 800; }
.fact-label { font-size: 0.85rem; color: var(--color-text-muted); }

.about-photo {
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.about-photo img { width: 100%; height: auto; }

/* ===================== SOLUTIONS / FLOW ===================== */
.flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 3rem;
}
.flow-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.4rem;
  transition: transform var(--transition), box-shadow var(--transition);
}
.flow-card:hover { transform: translateY(-4px); box-shadow: 0 16px 32px rgba(0,0,0,0.06); }
.flow-card-accent { background: var(--color-text); color: #fff; border-color: var(--color-text); }
.flow-card-accent p { color: rgba(255,255,255,0.7); }
.flow-num { font-size: 0.8rem; font-weight: 700; color: var(--color-accent); }
.flow-card-accent .flow-num { color: var(--color-pink-200); }
.flow-card h3 { font-size: 1rem; margin: 0.5rem 0 0.3rem; }
.flow-card p { font-size: 0.86rem; color: var(--color-text-muted); }

.sector-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
.sector-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 2rem;
  border-top: 3px solid var(--color-accent);
}
.sector-card p { color: var(--color-text-muted); font-size: 0.92rem; }

/* ===================== OEM GRID ===================== */
.oem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2.8rem;
}
.oem-item {
  background: var(--color-card-bg);
  border-radius: var(--radius-sm);
  padding: 1.3rem 1.4rem;
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding-left: 2.2rem;
}
.oem-item::before {
  content: '';
  position: absolute;
  left: 1.4rem;
  top: 50%;
  transform: translateY(-50%);
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--color-accent);
}

/* Product items (with a photo) are the actual OEM-ready product lineup —
   styled to stand out from the plain service/capability items around them. */
.oem-item-photo {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 1.4rem 0.9rem 0.9rem;
  background: #fff;
  border: 1.5px solid var(--color-accent);
  font-weight: 700;
}
.oem-item-photo::before { display: none; }
.oem-item-photo img {
  width: 64px;
  height: 64px;
  aspect-ratio: 1/1;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.oem-cta { text-align: center; }

/* ===================== TECHNOLOGY ===================== */
.tech-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
  padding: 3rem 0;
  border-bottom: 1px solid var(--color-border);
}
.tech-block:last-child { border-bottom: none; }
.tech-block-reverse .tech-copy { order: 2; }
.tech-block-reverse .tech-visual { order: 1; }

.tech-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px; height: 34px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.tech-copy h3 { font-size: 1.5rem; margin-bottom: 0.8rem; }
.tech-copy p { color: var(--color-text-muted); margin-bottom: 1.2rem; }

.tech-list li {
  padding-left: 1.4rem;
  position: relative;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  margin-bottom: 0.6rem;
}
.tech-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

.tech-visual img {
  border-radius: var(--radius-lg);
  width: 100%;
}
.tech-visual-ai {
  background: linear-gradient(135deg, var(--color-pink-50), var(--color-pink-200));
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
}
.ai-mock {
  background: rgba(255,255,255,0.85);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
}
.ai-mock-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  flex-wrap: wrap;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}
.ai-arrow { color: var(--color-accent); }
.ai-mock-time {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-accent);
}

/* ===================== PRODUCTS ===================== */
.product-block {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  align-items: center;
  margin-bottom: 5rem;
}
.product-block-reverse .product-copy { order: 2; }
.product-block-reverse .product-photo-single { order: 1; }

.product-copy h3 { font-size: 1.5rem; margin-bottom: 0.9rem; }
.product-copy p { color: var(--color-text-muted); margin-bottom: 1.1rem; }

.check-list li {
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  margin-bottom: 0.55rem;
}
.check-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.product-photos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.9rem;
}
.product-photos img {
  border-radius: var(--radius-md);
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 1;
  background: var(--color-card-bg);
}

.product-photo-single img {
  border-radius: var(--radius-lg);
  width: 100%;
}

.product-simple {
  margin-bottom: 3.5rem;
}
.product-simple h3 { font-size: 1.4rem; }
.product-simple p {
  color: var(--color-text-muted);
  max-width: 680px;
  margin-bottom: 1.6rem;
}
.grid-photo img {
  width: 100%;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
}

/* ===================== BRAND ===================== */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}
.brand-card {
  display: block;
  color: inherit;
  text-decoration: none;
  background: #fff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.brand-card img {
  width: 100%;
  aspect-ratio: 4/5;
  object-fit: cover;
}
.brand-card h3, .brand-card p {
  padding: 0 1.5rem;
}
.brand-card h3 {
  margin-top: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  flex-wrap: wrap;
}
.brand-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding-bottom: 1.6rem;
}
.brand-card-link { transition: var(--transition); }
.brand-card-link:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.08);
}
.brand-visit {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-accent);
  background: var(--color-card-bg);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
}

/* ===================== DISTRIBUTION ===================== */
.dist-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 3.5rem;
  align-items: center;
}
.dist-structure {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.2rem;
}
.dist-item {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.2rem;
}
.dist-item h3 { font-size: 0.98rem; }
.dist-item p { font-size: 0.85rem; color: var(--color-text-muted); }
.dist-photo img { border-radius: var(--radius-lg); width: 100%; }

/* ===================== TIMELINE ===================== */
.timeline {
  display: grid;
  gap: 2.6rem;
}
.timeline-year {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  padding-bottom: 2.4rem;
  border-bottom: 1px solid var(--color-border);
}
.timeline-year:last-child { border-bottom: none; }
.timeline-year h3 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--color-text);
}
.timeline-year ul li {
  position: relative;
  padding-left: 1.3rem;
  font-size: 0.94rem;
  color: var(--color-text-muted);
  margin-bottom: 0.65rem;
}
.timeline-year ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--color-text-soft);
}
.timeline-year ul li.highlight { color: var(--color-text); font-weight: 600; }
.timeline-year ul li.highlight::before { background: var(--color-accent); }

/* ===================== CERTIFICATES ===================== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
.cert-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 1.8rem;
}
.cert-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--color-accent);
  color: var(--color-accent);
  font-weight: 700;
  font-size: 0.8rem;
  margin-bottom: 1rem;
}
.cert-card p { color: var(--color-text-muted); font-size: 0.9rem; }

/* ===================== PARTNER / INVESTOR LOGO GRID ===================== */
.logo-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1rem;
}
.logo-grid-investors { grid-template-columns: repeat(5, 1fr); }
.logo-tile {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  height: 84px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  transition: var(--transition);
  overflow: hidden;
}
.logo-tile:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.logo-tile img { width: 100%; height: 100%; object-fit: cover; }
.logo-tile-white img { object-fit: contain; padding: 1rem; }

/* ===================== WORKPLACE ===================== */
.workplace-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.2rem;
}
.workplace-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  background: #fff;
}
.wp-large { grid-column: span 3; }
.workplace-card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.wp-large img { aspect-ratio: 21/9; }

.workplace-info { padding: 1.2rem 1.4rem; }
.workplace-info h3 { font-size: 1rem; margin-bottom: 0.3rem; }
.workplace-info p { font-size: 0.85rem; color: var(--color-text-muted); }

/* ===================== CONTACT ===================== */
.contact-section {
  position: relative;
  overflow: hidden;
}
.contact-bg { opacity: 0.5; }
.contact-section .container { position: relative; z-index: 1; }

.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3rem;
  align-items: start;
}

.contact-form {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  border: 1px solid var(--color-border);
  box-shadow: 0 30px 60px rgba(0,0,0,0.06);
}
.hp-field { display: none; }
.form-success {
  display: none;
  padding: 1.2rem 1.4rem;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-sm);
  background: #eefaf1;
  border: 1.5px solid #38a169;
  color: #1a5c33;
  font-size: 0.9rem;
}
.form-success.is-visible { display: block; }
.form-error {
  display: none;
  padding: 1.2rem 1.4rem;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-sm);
  background: #fdecec;
  border: 1.5px solid #d64545;
  color: #7a1f1f;
  font-size: 0.9rem;
}
.form-error.is-visible { display: block; }
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}
.form-group { margin-bottom: 1.2rem; }
.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  transition: border-color var(--transition);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
}
.form-group textarea { resize: vertical; }

.form-note {
  margin-top: 1.2rem;
  font-size: 0.8rem;
  color: var(--color-text-soft);
  line-height: 1.5;
}
.form-note code {
  background: var(--color-card-bg);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
}

.contact-info { display: grid; gap: 2rem; }
.contact-info-block {
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
  border-radius: var(--radius-md);
  padding: 1.6rem 1.8rem;
  border: 1px solid var(--color-border);
}
.contact-info-block h3 { font-size: 1rem; margin-bottom: 0.9rem; }
.contact-info-block ul li {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  margin-bottom: 0.9rem;
  font-size: 0.92rem;
}
.contact-info-block ul li:last-child { margin-bottom: 0; }
.contact-info-block ul li span {
  font-size: 0.76rem;
  color: var(--color-text-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.contact-info-block ul li a:hover { color: var(--color-accent); }
.contact-info-block p { font-size: 0.92rem; color: var(--color-text-muted); }

/* ===================== FOOTER ===================== */
.site-footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.75);
  padding: 3.5rem 0 2.2rem;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255,255,255,0.14);
  margin-bottom: 1.6rem;
}
.footer-brand .logo { color: #fff; }
.footer-brand .logo-dot { color: var(--color-pink-200); }
.footer-brand p { font-size: 0.85rem; margin-top: 0.3rem; color: rgba(255,255,255,0.55); }
.footer-nav { display: flex; gap: 1.6rem; flex-wrap: wrap; }
.footer-nav a { font-size: 0.88rem; transition: color var(--transition); }
.footer-nav a:hover { color: #fff; }
.footer-copyright { font-size: 0.8rem; color: rgba(255,255,255,0.45); }
.footer-lang-note {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.3);
  max-width: 900px;
  margin: 0 auto 0.8rem;
  line-height: 1.6;
}

/* ===================== RESPONSIVE ===================== */
@media (max-width: 980px) {
  .main-nav {
    position: fixed;
    top: 76px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 1rem 24px 1.6rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }
  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .main-nav a { width: 100%; padding: 0.9rem 0; border-bottom: 1px solid var(--color-border); }
  .main-nav a.nav-cta { margin-top: 0.8rem; text-align: center; border-bottom: none; }
  .nav-toggle { display: flex; }

  .about-grid { grid-template-columns: 1fr; }
  .about-facts { grid-template-columns: 1fr 1fr; }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .sector-grid { grid-template-columns: 1fr; }
  .oem-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-block, .tech-block-reverse .tech-copy, .tech-block-reverse .tech-visual {
    grid-template-columns: 1fr;
  }
  .tech-block { grid-template-columns: 1fr; }
  .tech-block-reverse .tech-copy { order: 1; }
  .tech-block-reverse .tech-visual { order: 2; }
  .product-block { grid-template-columns: 1fr; }
  .product-block-reverse .product-copy { order: 1; }
  .product-block-reverse .product-photo-single { order: 2; }
  .brand-grid { grid-template-columns: 1fr; }
  .dist-grid { grid-template-columns: 1fr; }
  .dist-structure { grid-template-columns: 1fr; }
  .timeline-year { grid-template-columns: 1fr; gap: 0.6rem; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .logo-grid { grid-template-columns: repeat(3, 1fr); }
  .logo-grid-investors { grid-template-columns: repeat(2, 1fr); }
  .workplace-grid { grid-template-columns: repeat(2, 1fr); }
  .wp-large { grid-column: span 2; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .section { padding: 4.5rem 0; }
  .hero-cta { flex-direction: column; align-items: stretch; }
  .hero-cta .btn { width: 100%; }
  .about-facts { grid-template-columns: 1fr; }
  .oem-grid { grid-template-columns: 1fr; }
  .product-photos { grid-template-columns: 1fr 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .logo-grid, .logo-grid-investors { grid-template-columns: repeat(2, 1fr); }
  .workplace-grid { grid-template-columns: 1fr; }
  .wp-large { grid-column: span 1; }
  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 1.6rem; }
}