/* ============================================================
   ZHONGCAI Technology — Corporate Website Styles
   Blue Theme: Primary #1565c0 / Accent #1e88e5
   ============================================================ */

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --blue-dark:   #0d47a1;
  --blue-main:   #1565c0;
  --blue-mid:    #1976d2;
  --blue-light:  #1e88e5;
  --blue-pale:   #e3f2fd;
  --blue-ultra:  #bbdefb;
  --text-dark:   #1a2340;
  --text-mid:    #3d4f6e;
  --text-light:  #7a8fad;
  --bg-white:    #ffffff;
  --bg-light:    #f4f7fb;
  --border:      #dde6f5;
  --shadow-sm:   0 2px 12px rgba(21,101,192,.08);
  --shadow-md:   0 6px 28px rgba(21,101,192,.14);
  --shadow-lg:   0 16px 48px rgba(21,101,192,.20);
  --radius:      10px;
  --radius-lg:   18px;
  --transition:  .25s cubic-bezier(.4,0,.2,1);
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background: var(--bg-white);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; transition: color var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ---------- Utility ---------- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.bg-light { background: var(--bg-light); }
.section { padding: 96px 0; }

.section-header { text-align: center; margin-bottom: 60px; }
.section-tag {
  display: inline-block;
  background: var(--blue-pale);
  color: var(--blue-main);
  font-size: .8rem;
  font-weight: 600;
  letter-spacing: .12em;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 14px;
  text-transform: uppercase;
}
.section-header h2 {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 14px;
  line-height: 1.3;
}
.section-header p {
  color: var(--text-mid);
  max-width: 620px;
  margin: 0 auto;
  font-size: 1.05rem;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 32px;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--blue-main);
  color: #fff;
  border-color: var(--blue-main);
}
.btn-primary:hover { background: var(--blue-dark); border-color: var(--blue-dark); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.7);
}
.btn-outline:hover { background: rgba(255,255,255,.15); border-color: #fff; }
.btn-white {
  background: #fff;
  color: var(--blue-main);
  border-color: #fff;
}
.btn-white:hover { background: var(--blue-pale); transform: translateY(-2px); }
.btn-blue {
  background: var(--blue-main);
  color: #fff;
  border-color: var(--blue-main);
}
.btn-blue:hover { background: var(--blue-dark); border-color: var(--blue-dark); }

/* ---------- Header ---------- */
#header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,.97);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(10px);
  transition: box-shadow var(--transition);
}
#header.scrolled { box-shadow: var(--shadow-md); }

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

/* Logo */
.logo { display: flex; align-items: center; gap: 12px; }
.logo-icon {
  width: 44px; height: 44px;
  background: linear-gradient(135deg, var(--blue-main), var(--blue-light));
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: .04em;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-cn { font-size: 1.15rem; font-weight: 700; color: var(--text-dark); }
.logo-en { font-size: .65rem; color: var(--text-light); letter-spacing: .08em; text-transform: uppercase; }

/* Nav */
.main-nav ul { display: flex; align-items: center; gap: 4px; }
.main-nav ul li a {
  padding: 8px 18px;
  border-radius: 6px;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-mid);
  transition: all var(--transition);
}
.main-nav ul li a:hover,
.main-nav ul li a.active {
  color: var(--blue-main);
  background: var(--blue-pale);
}
.lang-switch {
  background: var(--blue-main) !important;
  color: #fff !important;
  border-radius: 6px;
  font-size: .85rem !important;
}
.lang-switch:hover { background: var(--blue-dark) !important; }

.admin-link {
  background: transparent !important;
  color: var(--text-mid) !important;
  border: 1px solid var(--border);
  font-size: .85rem !important;
}
.admin-link:hover {
  background: var(--blue-main) !important;
  color: #fff !important;
  border-color: var(--blue-main);
}
.admin-link i { margin-right: 4px; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 72px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0a1929 0%, #0d3b82 40%, #1565c0 70%, #1e88e5 100%);
}
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-particle {
  position: absolute;
  background: rgba(255,255,255,.06);
  border-radius: 50%;
  animation: float linear infinite;
}
@keyframes float {
  0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100px) rotate(360deg); opacity: 0; }
}

.hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  max-width: 720px;
  padding: 80px 0;
}
.hero-tag {
  display: inline-block;
  background: rgba(255,255,255,.15);
  border: 1px solid rgba(255,255,255,.3);
  border-radius: 20px;
  padding: 5px 18px;
  font-size: .8rem;
  letter-spacing: .1em;
  margin-bottom: 24px;
}
.hero-content h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}
.hero-content h1 span { color: #90caf9; }
.hero-sub {
  font-size: 1.1rem;
  color: rgba(255,255,255,.8);
  margin-bottom: 36px;
  max-width: 540px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-scroll {
  position: absolute;
  bottom: 36px; left: 50%;
  transform: translateX(-50%);
  color: rgba(255,255,255,.5);
  font-size: 1.2rem;
  animation: bounce 2s infinite;
  cursor: pointer;
  z-index: 2;
}
@keyframes bounce {
  0%,100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ---------- Stats Bar ---------- */
.stats-bar {
  background: var(--blue-main);
  padding: 36px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.stat-item {
  text-align: center;
  color: #fff;
  padding: 16px;
  border-right: 1px solid rgba(255,255,255,.2);
}
.stat-item:last-child { border-right: none; }
.stat-num {
  display: block;
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: .85rem;
  opacity: .8;
  letter-spacing: .05em;
}

/* ---------- Tech Cards ---------- */
.tech-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}
.tech-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}
.tech-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-main), var(--blue-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}
.tech-card:hover::before { transform: scaleX(1); }
.tech-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.tech-card-icon {
  width: 60px; height: 60px;
  background: var(--blue-pale);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  color: var(--blue-main);
  margin-bottom: 20px;
}
.tech-card h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 12px; }
.tech-card p { color: var(--text-mid); margin-bottom: 20px; }
.tech-features { display: flex; flex-direction: column; gap: 8px; }
.tech-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-mid);
  font-size: .9rem;
}
.tech-features li i { color: var(--blue-main); font-size: .85rem; }

/* ---------- Products ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.product-card {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all var(--transition);
  border: 1px solid var(--border);
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.product-img {
  height: 160px;
  background: linear-gradient(135deg, var(--blue-pale) 0%, var(--blue-ultra) 100%);
  display: flex; align-items: center; justify-content: center;
}
.product-icon { font-size: 3.5rem; color: var(--blue-main); opacity: .7; }
.product-info { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.product-info h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.product-info p { color: var(--text-mid); flex: 1; margin-bottom: 16px; font-size: .95rem; }
.link-arrow {
  color: var(--blue-main);
  font-weight: 600;
  font-size: .9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap var(--transition);
}
.link-arrow:hover { gap: 10px; color: var(--blue-dark); }

/* ---------- Scenarios ---------- */
.scenario-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.scenario-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: 48px 32px;
  color: #fff;
  cursor: default;
  transition: transform var(--transition);
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.scenario-bg { position: absolute; inset: 0; z-index: 0; }
.scenario-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,.15);
  z-index: 1;
  transition: background var(--transition);
}
.scenario-card:hover .scenario-overlay { background: rgba(0,0,0,.25); }
.scenario-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.scenario-card > * { position: relative; z-index: 2; }
.scenario-icon { font-size: 2.5rem; margin-bottom: 16px; opacity: .9; }
.scenario-card h3 { font-size: 1.6rem; font-weight: 800; margin-bottom: 4px; }
.scenario-card > p { font-size: .9rem; opacity: .75; margin-bottom: 16px; letter-spacing: .1em; }
.scenario-card span { font-size: .9rem; opacity: .85; line-height: 1.6; }

/* ---------- News ---------- */
.news-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 24px;
}
.news-item {
  background: var(--bg-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.news-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.news-item.featured {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: flex-start;
  gap: 24px;
  padding: 36px;
}
.news-item.featured h3 { font-size: 1.2rem; }
.news-tag {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .06em;
  flex-shrink: 0;
}
.news-tag.industry { background: #e8f5e9; color: #2e7d32; }
.news-tag.company  { background: var(--blue-pale); color: var(--blue-main); }
.news-tag.knowledge{ background: #fff3e0; color: #e65100; }
.news-date { font-size: .8rem; color: var(--text-light); }
.news-item h3 { font-size: 1rem; font-weight: 700; line-height: 1.45; color: var(--text-dark); }
.news-item p { color: var(--text-mid); font-size: .9rem; line-height: 1.6; flex: 1; }

/* ---------- CTA ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-main) 50%, var(--blue-light) 100%);
  padding: 80px 0;
  text-align: center;
}
.cta-content h2 { font-size: 2.2rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
.cta-content p { color: rgba(255,255,255,.8); font-size: 1.1rem; margin-bottom: 36px; }

/* ---------- Footer ---------- */
.footer {
  background: #0a1929;
  color: rgba(255,255,255,.75);
  padding: 72px 0 0;
}
.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .logo .logo-cn { color: #fff; }
.footer-brand .logo .logo-en { color: rgba(255,255,255,.45); }
.footer-brand p { font-size: .9rem; margin-top: 16px; line-height: 1.7; }
.footer-slogan {
  color: rgba(255,255,255,.4) !important;
  font-style: italic;
  font-size: .85rem !important;
  margin-top: 8px !important;
}
.footer h4 { color: #fff; font-size: .95rem; margin-bottom: 18px; letter-spacing: .05em; }
.footer-links ul li,
.footer-products ul li { margin-bottom: 10px; }
.footer-links ul li a,
.footer-products ul li a {
  color: rgba(255,255,255,.65);
  font-size: .9rem;
  transition: color var(--transition);
}
.footer-links ul li a:hover,
.footer-products ul li a:hover { color: #90caf9; }
.footer-contact ul li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: rgba(255,255,255,.65);
  font-size: .9rem;
  margin-bottom: 12px;
}
.footer-contact ul li i { color: var(--blue-light); margin-top: 3px; flex-shrink: 0; }
.footer-bottom {
  padding: 20px 0;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .8rem;
  color: rgba(255,255,255,.35);
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */
.page-hero {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue-main) 60%, var(--blue-light) 100%);
  padding: 140px 0 80px;
  color: #fff;
  text-align: center;
}
.page-hero h1 { font-size: 2.8rem; font-weight: 800; margin-bottom: 14px; }
.page-hero p { font-size: 1.1rem; opacity: .82; }
.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: .85rem;
  opacity: .7;
}
.breadcrumb a:hover { opacity: 1; color: #90caf9; }

.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.about-intro-text h2 { font-size: 1.9rem; font-weight: 800; margin-bottom: 16px; line-height: 1.35; }
.about-intro-text p { color: var(--text-mid); margin-bottom: 14px; line-height: 1.8; }
.about-tags { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 24px; }
.about-tag {
  background: var(--blue-pale);
  color: var(--blue-main);
  border-radius: 20px;
  padding: 5px 16px;
  font-size: .85rem;
  font-weight: 600;
}
.about-visual {
  background: linear-gradient(135deg, var(--blue-pale), var(--blue-ultra));
  border-radius: var(--radius-lg);
  min-height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.about-visual-inner {
  text-align: center;
  color: var(--blue-main);
}
.about-visual-inner .big-icon { font-size: 6rem; opacity: .25; }
.about-visual-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 24px;
}
.av-stat {
  background: rgba(255,255,255,.7);
  padding: 20px;
  text-align: center;
}
.av-stat .num { font-size: 2rem; font-weight: 800; color: var(--blue-main); }
.av-stat .lbl { font-size: .8rem; color: var(--text-mid); }

.values-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.value-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}
.value-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: var(--blue-ultra); }
.value-icon {
  width: 56px; height: 56px;
  background: var(--blue-pale);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.4rem;
  color: var(--blue-main);
  margin: 0 auto 16px;
}
.value-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.value-card p { color: var(--text-mid); font-size: .88rem; line-height: 1.6; }

.timeline { position: relative; padding: 20px 0; }
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
  transform: translateX(-50%);
}
.tl-item {
  display: flex;
  gap: 40px;
  margin-bottom: 48px;
  position: relative;
}
.tl-item:nth-child(even) { flex-direction: row-reverse; }
.tl-content {
  flex: 1;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  transition: box-shadow var(--transition);
}
.tl-content:hover { box-shadow: var(--shadow-md); }
.tl-year {
  flex: 0 0 auto;
  width: 80px;
  text-align: center;
  padding-top: 20px;
  position: relative;
}
.tl-year::after {
  content: '';
  position: absolute;
  top: 28px;
  left: 50%;
  transform: translateX(-50%);
  width: 14px; height: 14px;
  background: var(--blue-main);
  border-radius: 50%;
  border: 3px solid #fff;
  box-shadow: 0 0 0 3px var(--blue-main);
}
.tl-year span {
  display: block;
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--blue-main);
}
.tl-content h4 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.tl-content p { color: var(--text-mid); font-size: .9rem; }

.honor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.honor-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}
.honor-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.honor-icon { font-size: 2.5rem; color: #f9a825; margin-bottom: 14px; }
.honor-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.honor-card p { color: var(--text-mid); font-size: .85rem; }

/* ============================================================
   PRODUCTS PAGE
   ============================================================ */
.products-nav {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 72px;
  z-index: 100;
}
.products-nav .container { display: flex; gap: 0; }
.prod-tab {
  padding: 18px 28px;
  font-size: .9rem;
  font-weight: 600;
  color: var(--text-mid);
  border-bottom: 3px solid transparent;
  transition: all var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.prod-tab:hover, .prod-tab.active { color: var(--blue-main); border-bottom-color: var(--blue-main); }

.equipment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.equip-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}
.equip-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.equip-img {
  height: 180px;
  background: linear-gradient(135deg, var(--blue-pale), var(--blue-ultra));
  display: flex; align-items: center; justify-content: center;
}
.equip-img i { font-size: 4rem; color: var(--blue-main); opacity: .6; }
.equip-info { padding: 24px; }
.equip-info h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 8px; }
.equip-info p { color: var(--text-mid); font-size: .88rem; line-height: 1.6; margin-bottom: 14px; }
.equip-badge {
  display: inline-block;
  background: var(--blue-pale);
  color: var(--blue-main);
  font-size: .75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 12px;
}

.service-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.sf-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: all var(--transition);
}
.sf-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.sf-card i { font-size: 2rem; color: var(--blue-main); margin-bottom: 14px; }
.sf-card h4 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; }
.sf-card p { color: var(--text-mid); font-size: .88rem; }

/* ============================================================
   CONTACT PAGE
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.5fr; gap: 48px; align-items: start; }
.contact-info-card {
  background: linear-gradient(135deg, var(--blue-main), var(--blue-light));
  border-radius: var(--radius-lg);
  padding: 40px;
  color: #fff;
}
.contact-info-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 24px; }
.contact-detail { display: flex; gap: 16px; align-items: flex-start; margin-bottom: 24px; }
.contact-detail-icon {
  width: 44px; height: 44px;
  background: rgba(255,255,255,.15);
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
}
.contact-detail-text { flex: 1; }
.contact-detail-text h4 { font-size: .85rem; opacity: .7; margin-bottom: 4px; }
.contact-detail-text p { font-size: .95rem; font-weight: 600; }

.contact-form-card {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-sm);
}
.contact-form-card h3 { font-size: 1.4rem; font-weight: 700; margin-bottom: 28px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: .88rem;
  font-weight: 600;
  color: var(--text-mid);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--border);
  border-radius: 6px;
  font-size: .95rem;
  font-family: inherit;
  color: var(--text-dark);
  transition: border-color var(--transition);
  background: var(--bg-white);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--blue-main); box-shadow: 0 0 0 3px rgba(21,101,192,.12); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; padding: 14px; font-size: 1rem; }

.map-placeholder {
  background: linear-gradient(135deg, var(--blue-pale), var(--blue-ultra));
  border-radius: var(--radius-lg);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 12px;
  color: var(--blue-main);
  font-size: 1rem;
  font-weight: 600;
}
.map-placeholder i { font-size: 3rem; opacity: .5; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
  .tech-cards, .scenario-cards { grid-template-columns: 1fr; }
  .product-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .about-intro { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .equipment-grid { grid-template-columns: repeat(2, 1fr); }
  .honor-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 64px 0; }
  .section-header h2 { font-size: 1.7rem; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,.2); }
  .stat-item:nth-child(even) { border-bottom: none; }
  .stat-item:nth-child(3) { border-bottom: 1px solid rgba(255,255,255,.2); }

  .news-grid { grid-template-columns: 1fr; }
  .news-item.featured { flex-direction: column; grid-column: 1; }

  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom .container { flex-direction: column; gap: 8px; text-align: center; }

  .product-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .service-features { grid-template-columns: 1fr; }
  .equipment-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr 1fr; }
  .honor-grid { grid-template-columns: 1fr; }

  .nav-toggle { display: flex; }
  .main-nav {
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px;
    display: none;
    flex-direction: column;
    box-shadow: var(--shadow-md);
  }
  .main-nav.open { display: flex; }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav ul li a { display: block; }

  .timeline::before { left: 24px; }
  .tl-item, .tl-item:nth-child(even) { flex-direction: column; padding-left: 60px; }
  .tl-year { width: auto; padding-top: 0; text-align: left; position: absolute; left: 0; }
  .tl-year::after { left: 22px; top: 4px; }

  .hero-content h1 { font-size: 2.2rem; }
  .hero-btns .btn { padding: 11px 22px; font-size: .9rem; }
}

@media (max-width: 480px) {
  .values-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ---------- Scroll animations ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}