/* ============================================
   FRIOCOO — Global Stylesheet
   Style: Clean, Modern, European Industrial
   ============================================ */

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

:root {
  --clr-primary: #0a4d8c;
  --clr-primary-dark: #063567;
  --clr-accent: #00b4d8;
  --clr-accent-light: #90e0ef;
  --clr-dark: #0d1b2a;
  --clr-dark-2: #1b2f45;
  --clr-text: #1e2d3d;
  --clr-text-muted: #5a7089;
  --clr-bg: #f7f9fc;
  --clr-bg-alt: #eef2f7;
  --clr-white: #ffffff;
  --clr-border: #d6e2f0;
  --clr-success: #1a9e5b;
  --radius: 12px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(10,77,140,0.10);
  --shadow-lg: 0 12px 48px rgba(10,77,140,0.16);
  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-heading: 'Montserrat', -apple-system, sans-serif;
}

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

body {
  font-family: var(--font-body);
  color: var(--clr-text);
  background: var(--clr-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1,h2,h3,h4,h5 { font-family: var(--font-heading); font-weight: 700; line-height: 1.25; color: var(--clr-dark); }
h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.05rem; }

p { color: var(--clr-text-muted); margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 96px 0; }
.section-alt { background: var(--clr-bg); }

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-transform: uppercase;
}
.btn-primary {
  background: var(--clr-primary);
  color: var(--clr-white);
  border-color: var(--clr-primary);
}
.btn-primary:hover { background: var(--clr-primary-dark); border-color: var(--clr-primary-dark); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(10,77,140,0.3); }
.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-primary);
}
.btn-outline:hover { background: var(--clr-primary); color: var(--clr-white); transform: translateY(-2px); }
.btn-outline-light {
  background: transparent;
  color: var(--clr-white);
  border-color: rgba(255,255,255,0.6);
}
.btn-outline-light:hover { background: rgba(255,255,255,0.15); border-color: white; }
.btn-white {
  background: var(--clr-white);
  color: var(--clr-primary);
  border-color: var(--clr-white);
}
.btn-white:hover { background: var(--clr-accent-light); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 0.85rem; }
.btn-full { width: 100%; justify-content: center; }

/* === HEADER === */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0;
  transition: all var(--transition);
  background: linear-gradient(180deg, rgba(6,14,28,0.82) 0%, rgba(6,14,28,0.55) 70%, transparent 100%);
  backdrop-filter: blur(0px);
}
.header.scrolled {
  background: var(--clr-white);
  box-shadow: 0 2px 20px rgba(10,77,140,0.12);
  padding: 0;
  backdrop-filter: none;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  color: var(--clr-white);
  transition: color var(--transition);
}
.header.scrolled .logo { color: var(--clr-primary); }
/* Logo image styles */
.logo-img {
  height: 64px;
  width: auto;
  display: block;
  background: transparent;
  padding: 0;
  transition: transform var(--transition), opacity var(--transition), filter var(--transition);
  /* 深色背景上：白色光晕让深蓝 logo 文字发亮 */
  filter: drop-shadow(0 0 8px rgba(255,255,255,0.45)) drop-shadow(0 2px 6px rgba(0,0,0,0.4)) brightness(1.15);
}
.header.scrolled .logo-img {
  /* 白色背景上：深色投影，去掉白光晕 */
  filter: drop-shadow(0 1px 4px rgba(10,77,140,0.22)) brightness(1.0);
}
.logo:hover .logo-img {
  transform: scale(1.05);
  opacity: 0.92;
}
.logo-img-footer {
  height: 52px;
  margin-bottom: 14px;
  filter: drop-shadow(0 1px 8px rgba(0,180,216,0.3)) brightness(1.12);
}
.logo-icon { font-size: 1.6rem; }
.nav-list { display: flex; align-items: center; gap: 8px; }
.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
  color: rgba(255,255,255,0.9);
  transition: all var(--transition);
}
.nav-link:hover, .nav-link.active { color: var(--clr-white); background: rgba(255,255,255,0.15); }
.header.scrolled .nav-link { color: var(--clr-text); }
.header.scrolled .nav-link:hover, .header.scrolled .nav-link.active { color: var(--clr-primary); background: var(--clr-bg); }
.nav-cta {
  background: var(--clr-accent) !important;
  color: var(--clr-white) !important;
  font-weight: 600;
}
.nav-cta:hover { background: var(--clr-primary) !important; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 4px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: white; border-radius: 2px; transition: all var(--transition); }
.header.scrolled .nav-toggle span { background: var(--clr-dark); }

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--clr-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0d1b2a 0%, #0a4d8c 55%, #00b4d8 100%);
}
.hero-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(0,180,216,0.25) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(10,77,140,0.4) 0%, transparent 50%);
}
.hero-particles { position: absolute; inset: 0; pointer-events: none; }
.particle {
  position: absolute;
  border-radius: 50%;
  background: rgba(144,224,239,0.15);
  animation: float 8s ease-in-out infinite;
}
.p1 { width:400px; height:400px; top:-100px; right:-80px; animation-delay:0s; }
.p2 { width:200px; height:200px; bottom:80px; left:10%; animation-delay:2s; }
.p3 { width:120px; height:120px; top:30%; left:30%; animation-delay:4s; }
.p4 { width:60px; height:60px; top:60%; right:20%; animation-delay:1s; }
.p5 { width:80px; height:80px; top:20%; right:40%; animation-delay:3s; }
@keyframes float { 0%,100%{transform:translateY(0) scale(1)} 50%{transform:translateY(-30px) scale(1.05)} }

.hero-content {
  position: relative;
  z-index: 2;
  padding-top: 80px;
  max-width: 760px;
}
.hero-badge {
  display: inline-block;
  background: rgba(0,180,216,0.2);
  border: 1px solid rgba(0,180,216,0.4);
  color: var(--clr-accent-light);
  padding: 8px 20px;
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
.hero-title {
  color: var(--clr-white);
  margin-bottom: 24px;
  line-height: 1.15;
}
.hero-accent { color: var(--clr-accent); }
.hero-subtitle { color: rgba(255,255,255,0.75); font-size: 1.15rem; margin-bottom: 40px; max-width: 600px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 64px; }
.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-num { display: block; font-family: var(--font-heading); font-weight: 800; font-size: 1.4rem; color: var(--clr-accent); }
.stat-label { display: block; font-size: 0.75rem; color: rgba(255,255,255,0.6); text-transform: uppercase; letter-spacing: 0.06em; margin-top: 2px; }
.stat-divider { width: 1px; height: 40px; background: rgba(255,255,255,0.2); }
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid rgba(255,255,255,0.4);
  border-bottom: 2px solid rgba(255,255,255,0.4);
  transform: rotate(45deg);
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce { 0%,100%{transform:rotate(45deg) translateY(0)} 50%{transform:rotate(45deg) translateY(6px)} }

/* === SECTION HEADER === */
.section-header { text-align: center; max-width: 640px; margin: 0 auto 64px; }
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-accent);
  margin-bottom: 12px;
  padding: 5px 14px;
  background: rgba(0,180,216,0.1);
  border-radius: 100px;
  border: 1px solid rgba(0,180,216,0.25);
}
.section-tag.light { color: var(--clr-accent-light); background: rgba(144,224,239,0.15); border-color: rgba(144,224,239,0.3); }
.section-title { margin-bottom: 16px; }
.section-sub { color: var(--clr-text-muted); font-size: 1.05rem; }

/* === WHY GRID === */
.why-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 28px; }
.why-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
}
.why-card:hover { border-color: var(--clr-accent); box-shadow: var(--shadow); transform: translateY(-4px); }
.why-icon { font-size: 2.4rem; margin-bottom: 16px; }
.why-card h3 { font-size: 1.1rem; margin-bottom: 10px; color: var(--clr-dark); }

/* === PRODUCT CARDS === */
.product-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: 28px; }
.product-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}
.product-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-6px); }
.product-card.featured { border-color: var(--clr-primary); box-shadow: var(--shadow); }
.product-img {
  height: 220px;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 16px;
  overflow: hidden;
}
.product-card-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  border-radius: 0;
  transition: transform 0.5s ease;
}
.product-card:hover .product-card-img { transform: scale(1.05); }
.product-img-v { background: linear-gradient(135deg, #0d1b2a, #0a4d8c); }
.product-img-u { background: linear-gradient(135deg, #063567, #00b4d8); }
.product-img-slim { background: linear-gradient(135deg, #1b2f45, #2d6a9f); }
.product-badge {
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.3);
  color: white;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}
.product-tag-popular {
  position: absolute;
  top: 16px;
  right: 16px;
  background: var(--clr-accent);
  color: white;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
}
.product-info { padding: 28px; }
.product-info h3 { font-size: 1.15rem; margin-bottom: 10px; }
.product-features { margin: 16px 0; display: flex; flex-direction: column; gap: 6px; }
.product-features li { font-size: 0.875rem; color: var(--clr-text-muted); }
.section-cta { text-align: center; margin-top: 48px; }

/* === ABOUT STRIP === */
.about-strip {
  background: linear-gradient(135deg, var(--clr-primary-dark), var(--clr-primary), #1a6eb5);
  padding: 96px 0;
}
.about-strip-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.about-strip-text h2 { color: white; margin: 16px 0 20px; font-size: clamp(1.5rem,2.5vw,2rem); }
.about-strip-text p { color: rgba(255,255,255,0.75); margin-bottom: 32px; }
.about-strip-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  height: 280px;
}
.visual-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.15);
  animation: pulse 4s ease-in-out infinite;
}
.ring-1 { width:180px; height:180px; animation-delay:0s; }
.ring-2 { width:240px; height:240px; animation-delay:0.8s; }
.ring-3 { width:300px; height:300px; animation-delay:1.6s; }
@keyframes pulse { 0%,100%{opacity:0.6;transform:scale(1)} 50%{opacity:1;transform:scale(1.03)} }
.visual-center {
  position: relative;
  z-index: 2;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  width: 120px;
  height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(10px);
}
.visual-formula { font-family: var(--font-heading); font-size: 2rem; font-weight: 800; color: white; line-height: 1; }
.visual-sub { font-size: 0.75rem; color: var(--clr-accent-light); font-weight: 600; letter-spacing: 0.1em; }

/* === APPLICATIONS === */
.app-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px,1fr)); gap: 20px; }
.app-card {
  background: var(--clr-white);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition);
}
.app-card:hover { border-color: var(--clr-primary); box-shadow: var(--shadow); transform: translateY(-4px); }
.app-icon { font-size: 2rem; margin-bottom: 12px; }
.app-card h4 { font-size: 0.95rem; margin-bottom: 8px; }
.app-card p { font-size: 0.82rem; }

/* === CTA BANNER === */
.cta-banner {
  background: linear-gradient(135deg, var(--clr-dark), var(--clr-dark-2));
  padding: 80px 0;
  text-align: center;
}
.cta-inner h2 { color: white; margin-bottom: 16px; }
.cta-inner p { color: rgba(255,255,255,0.7); margin-bottom: 36px; font-size: 1.1rem; }

/* === FOOTER === */
.footer { background: #070f1a; padding: 72px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; }
.footer-brand .logo { color: white; margin-bottom: 16px; }
.footer-brand p { color: rgba(255,255,255,0.5); font-size: 0.875rem; max-width: 240px; }
.footer h5 { color: var(--clr-accent-light); font-size: 0.8rem; letter-spacing: 0.12em; text-transform: uppercase; margin-bottom: 20px; }
.footer ul { display: flex; flex-direction: column; gap: 10px; }
.footer ul li, .footer ul li a { color: rgba(255,255,255,0.5); font-size: 0.875rem; transition: color var(--transition); }
.footer ul li a:hover { color: white; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  margin-top: 56px;
}
.footer-bottom p { color: rgba(255,255,255,0.35); font-size: 0.8rem; text-align: center; margin: 0; }

/* === PAGE HERO === */
.page-hero {
  position: relative;
  padding: 140px 0 80px;
  overflow: hidden;
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--clr-dark) 0%, var(--clr-primary) 100%);
}
.page-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 50%, rgba(0,180,216,0.3) 0%, transparent 60%);
}
.page-hero-content { position: relative; z-index: 2; }
.breadcrumb { color: rgba(255,255,255,0.5); font-size: 0.85rem; margin-bottom: 16px; }
.breadcrumb a { color: rgba(255,255,255,0.6); transition: color var(--transition); }
.breadcrumb a:hover { color: white; }
.page-hero h1 { color: white; margin-bottom: 12px; }
.page-hero p { color: rgba(255,255,255,0.7); font-size: 1.1rem; margin: 0; }

/* === ABOUT PAGE === */
.about-mission {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.about-mission-text .section-tag { margin-bottom: 12px; }
.about-mission-text h2 { margin: 8px 0 20px; }
.about-mission-text p { margin-bottom: 16px; }
.mission-card-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.mission-card {
  border-radius: var(--radius);
  padding: 28px 20px;
  text-align: center;
}
.mc-blue { background: var(--clr-primary); }
.mc-teal { background: #007ea7; }
.mc-dark { background: var(--clr-dark-2); }
.mc-accent { background: linear-gradient(135deg, var(--clr-accent), #0077b6); }
.mc-num { color: rgba(255,255,255,0.6); font-size: 0.8rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; }
.mc-val { color: white; font-family: var(--font-heading); font-size: 1.8rem; font-weight: 800; margin: 4px 0; }
.mc-desc { color: rgba(255,255,255,0.6); font-size: 0.78rem; }
.values-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px,1fr)); gap: 40px; }
.value-item { border-top: 3px solid var(--clr-accent); padding-top: 24px; }
.value-num { font-family: var(--font-heading); font-size: 3rem; font-weight: 800; color: var(--clr-border); line-height: 1; margin-bottom: 12px; }
.value-item h3 { margin-bottom: 12px; }
.tech-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px,1fr)); gap: 32px; }
.tech-item {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all var(--transition);
}
.tech-item:hover { border-color: var(--clr-accent); box-shadow: var(--shadow); }
.tech-icon { font-size: 2rem; margin-bottom: 14px; }
.tech-item h4 { margin-bottom: 10px; }

/* === PRODUCTS PAGE === */
.product-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.product-intro-text .section-tag { margin-bottom: 12px; }
.product-intro-text h2 { margin: 8px 0 20px; }
.product-intro-badges { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pi-badge {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 20px;
  text-align: center;
  transition: all var(--transition);
}
.pi-badge:hover { border-color: var(--clr-primary); }
.pi-badge span { display: block; font-family: var(--font-heading); font-size: 1.3rem; font-weight: 800; color: var(--clr-primary); }
.pi-badge small { color: var(--clr-text-muted); font-size: 0.8rem; }

.product-detail { padding: 80px 0; }
.product-detail-inner {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: center;
}
.product-detail-inner.reverse { direction: rtl; }
.product-detail-inner.reverse > * { direction: ltr; }

/* === PRODUCT PHOTO (real image) === */
.product-photo-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--clr-dark);
  box-shadow: var(--shadow-lg);
}
.product-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
  transition: transform 0.5s ease;
}
.product-photo-wrap:hover .product-photo { transform: scale(1.04); }
.product-photo-placeholder {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--clr-dark-2), var(--clr-primary-dark));
  display: none;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.placeholder-inner { color: rgba(255,255,255,0.7); }
.placeholder-icon { font-size: 3rem; margin-bottom: 12px; display: block; }
.placeholder-label { font-family: var(--font-heading); font-size: 1.4rem; font-weight: 700; color: #fff; margin-bottom: 10px; }
.placeholder-hint { font-size: 0.78rem; opacity: 0.6; }
.placeholder-hint code { background: rgba(255,255,255,0.1); padding: 2px 8px; border-radius: 4px; font-family: monospace; }
.product-photo-badge {
  position: absolute;
  top: 18px;
  left: 18px;
  background: var(--clr-primary);
  color: #fff;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 5px 14px;
  border-radius: 100px;
  z-index: 2;
  box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.product-3d {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0;
}
.unit-body {
  width: 280px;
  height: 200px;
  border-radius: 16px;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  overflow: hidden;
}
.v-type-visual .unit-body { background: linear-gradient(145deg, #0a4d8c, #063567); }
.u-type-visual .unit-body { background: linear-gradient(145deg, #00b4d8, #0077b6); }
.slim-type-visual .unit-body { background: linear-gradient(145deg, #1b2f45, #0a4d8c); }
.unit-fins {
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(90deg, transparent, transparent 12px, rgba(255,255,255,0.05) 12px, rgba(255,255,255,0.05) 14px);
}
.u-fins { background: repeating-linear-gradient(0deg, transparent, transparent 10px, rgba(255,255,255,0.06) 10px, rgba(255,255,255,0.06) 12px); }
.slim-fins { background: repeating-linear-gradient(90deg, transparent, transparent 8px, rgba(255,255,255,0.04) 8px, rgba(255,255,255,0.04) 10px); }
.unit-label { font-family: var(--font-heading); font-size: 1.6rem; font-weight: 800; color: rgba(255,255,255,0.9); letter-spacing: 0.1em; position: relative; z-index: 1; }
.unit-co2 { font-size: 0.85rem; font-weight: 600; color: rgba(255,255,255,0.5); letter-spacing: 0.12em; position: relative; z-index: 1; }
.unit-shadow { width: 240px; height: 20px; background: radial-gradient(ellipse, rgba(0,0,0,0.25) 0%, transparent 70%); margin-top: -4px; }

.product-series-badge {
  display: inline-block;
  background: rgba(0,180,216,0.1);
  border: 1px solid rgba(0,180,216,0.3);
  color: var(--clr-accent);
  padding: 5px 14px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.product-tagline { color: var(--clr-text-muted); font-weight: 500; font-size: 0.95rem; margin-bottom: 16px; }
.spec-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 24px 0; }
.spec-item {
  background: var(--clr-bg);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.spec-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--clr-text-muted); font-weight: 600; }
.spec-val { font-size: 1rem; font-weight: 700; color: var(--clr-dark); font-family: var(--font-heading); }
.feature-list { margin: 20px 0 28px; display: flex; flex-direction: column; gap: 8px; }
.feature-row { display: flex; align-items: center; gap: 12px; font-size: 0.9rem; color: var(--clr-text); }
.fcheck { color: var(--clr-success); font-weight: 700; flex-shrink: 0; }

/* === COMPARE TABLE === */
.compare-table-wrap { overflow-x: auto; }
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--clr-border);
  font-size: 0.9rem;
}
.compare-table th {
  background: var(--clr-dark);
  color: white;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.compare-table th.highlight-col, .compare-table td.highlight-col {
  background: rgba(10,77,140,0.06);
  color: var(--clr-primary);
  font-weight: 600;
}
.compare-table th.highlight-col { background: var(--clr-primary); color: white; }
.compare-table tbody tr:hover { background: var(--clr-bg); }
.compare-table tbody tr:last-child td { border-bottom: none; }

/* Capacity highlight row */
.compare-table tr.capacity-row td {
  background: linear-gradient(135deg, rgba(0,180,216,0.08) 0%, rgba(10,77,140,0.06) 100%);
  border-top: 2px solid var(--clr-accent);
  border-bottom: 1px solid rgba(0,180,216,0.25);
  padding-top: 18px;
  padding-bottom: 8px;
}
.compare-table tr.capacity-row td strong {
  display: block;
  color: var(--clr-primary-dark);
  font-family: var(--font-heading);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}
.capacity-badge {
  display: inline-block;
  background: var(--clr-primary);
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.05rem;
  padding: 4px 12px;
  border-radius: 6px;
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}
.compare-table tr.capacity-row td.highlight-col .capacity-badge {
  background: var(--clr-accent);
  color: var(--clr-dark);
}
.compare-table tr.capacity-row td small {
  display: block;
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  margin-top: 2px;
}

/* Who-needs-this guidance row */
.compare-table tr.capacity-guide-row td {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  background: rgba(0,180,216,0.04);
  border-bottom: 2px solid var(--clr-border);
  padding-top: 6px;
  padding-bottom: 14px;
}
.compare-table tr.capacity-guide-row td.highlight-col {
  color: var(--clr-primary);
  font-weight: 600;
  background: rgba(10,77,140,0.05);
}

/* === CONTACT PAGE === */
.contact-layout { display: grid; grid-template-columns: 1.2fr 1fr; gap: 72px; }
.contact-form-wrap h2, .contact-info-wrap h2 { margin-bottom: 12px; }
.contact-form-wrap > p, .contact-info-wrap > p { margin-bottom: 32px; }
.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--clr-text); }
.form-group input, .form-group select, .form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--clr-text);
  background: var(--clr-white);
  transition: border-color var(--transition);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(10,77,140,0.08);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-notice { font-size: 0.78rem; color: var(--clr-text-muted); text-align: center; }
.form-success { text-align: center; padding: 48px 0; }
.success-icon {
  width: 64px; height: 64px;
  background: var(--clr-success);
  color: white;
  font-size: 2rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.contact-cards { display: flex; flex-direction: column; gap: 16px; margin-bottom: 40px; }
.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  transition: all var(--transition);
}
.contact-card:hover { border-color: var(--clr-primary); box-shadow: var(--shadow); }
.cc-icon { font-size: 1.6rem; flex-shrink: 0; }
.cc-text h4 { margin-bottom: 2px; font-size: 0.9rem; }
.cc-text p { font-size: 0.85rem; margin: 0; }
.why-contact h3 { margin-bottom: 20px; font-size: 1.1rem; }
.wc-item { display: flex; gap: 16px; margin-bottom: 20px; }
.wc-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; }
.wc-item strong { display: block; margin-bottom: 4px; font-size: 0.9rem; }
.wc-item p { font-size: 0.85rem; margin: 0; }

/* === FAQ === */
.faq-list { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 12px; }
.faq-item { border: 1px solid var(--clr-border); border-radius: var(--radius); overflow: hidden; }
.faq-q {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--clr-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: background var(--transition);
}
.faq-q:hover { background: var(--clr-bg); }
.faq-arrow { font-size: 1.2rem; transition: transform var(--transition); color: var(--clr-primary); }
.faq-q.open .faq-arrow { transform: rotate(180deg); }
.faq-a { display: none; padding: 0 24px 20px; }
.faq-a p { margin: 0; font-size: 0.9rem; }
.faq-a.open { display: block; }

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .nav { display: none; }
  .nav.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; right: 0; background: var(--clr-white); padding: 20px 24px; box-shadow: var(--shadow-lg); }
  .nav-list { flex-direction: column; gap: 4px; }
  .nav-link { color: var(--clr-text) !important; width: 100%; }
  .nav-toggle { display: flex; }
  .section { padding: 64px 0; }
  .hero-actions { gap: 12px; }
  .about-strip-inner { grid-template-columns: 1fr; }
  .about-strip-visual { height: 200px; }
  .about-mission { grid-template-columns: 1fr; }
  .product-detail-inner { grid-template-columns: 1fr; }
  .product-detail-inner.reverse { direction: ltr; }
  .product-intro { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 16px; }
  .stat-divider { display: none; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .mission-card-grid { grid-template-columns: 1fr; }
}