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

:root {
  --primary: #1a6fea;
  --primary-dark: #0a3fa8;
  --primary-light: #e8f4ff;
  --secondary: #0f1e40;
  --accent: #00c6ff;
  --text: #1a2340;
  --text-muted: #5c6b8a;
  --bg: #ffffff;
  --bg-alt: #f8faff;
  --border: #e4eaf6;
  --green: #1db96a;
  --orange: #f5a623;
  --purple: #9b59b6;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(26,111,234,0.08);
  --shadow-lg: 0 8px 48px rgba(26,111,234,0.14);
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; }

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

/* ===== SECTION ===== */
.section { padding: 100px 0; }
.section.alt-bg { background: var(--bg-alt); }

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 56px;
}
.section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}
.section-title {
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 16px;
}
.section-desc {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  border: 2px solid var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(26,111,234,0.3);
}
.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-1px);
}
.btn-white {
  background: #fff;
  color: var(--primary);
  border: 2px solid #fff;
}
.btn-white:hover {
  background: #f0f7ff;
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.15);
}
.btn-outline-white {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline-white:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
  transform: translateY(-1px);
}
.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: 10px; }
.btn-full { width: 100%; }

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: var(--transition);
}
.header.scrolled {
  border-bottom-color: var(--border);
  box-shadow: 0 2px 20px rgba(26,111,234,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 72px;
  gap: 32px;
}

/* LOGO */
.logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 12px;
}
.logo-img {
  height: 60px;
  width: auto;
  display: block;
  flex-shrink: 0;
}
.logo-text { display: flex; flex-direction: column; }
.logo-name { font-size: 20px; font-weight: 700; color: var(--text); }
.footer .logo-img { height: 36px; }
.footer .logo-name { font-size: 16px; }
.footer .logo-text { gap: 4px; }

/* NAV */
.nav { margin-left: auto; }
.nav-list { display: flex; gap: 4px; }
.nav-link {
  display: block;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-cta { margin-left: 8px; }
.nav-cta-mobile { display: none; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  margin-left: auto;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== HERO ===== */
.hero {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 140px 0 100px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #0a1628 0%, #0e2460 50%, #0a3fa8 100%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.hero-content {
  position: relative;
  text-align: center;
  z-index: 2;
  max-width: 800px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 24px;
  color: rgba(255,255,255,0.85);
  font-size: 13px;
  margin-bottom: 28px;
  background: rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
}
.hero-title {
  font-size: clamp(36px, 4.5vw, 56px);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}
.hero-title .highlight {
  background: linear-gradient(135deg, #60b3ff, #00e5ff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: clamp(16px, 2vw, 20px);
  color: rgba(255,255,255,0.75);
  margin-bottom: 40px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 16px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 64px;
  flex-wrap: wrap;
}
.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  padding: 28px 40px;
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
}
.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 0 32px;
}
.stat-num {
  font-size: 32px;
  font-weight: 800;
  color: #fff;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-num em {
  font-style: normal;
  font-size: 16px;
  color: var(--accent);
}
.stat-label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}
.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.15);
}
.hero-scroll {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
}
.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 12px;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%,100% { opacity: 0.4; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.2); }
}

/* Floating Particles */
.particle {
  position: absolute;
  border-radius: 50%;
  animation: float linear infinite;
  pointer-events: none;
}
@keyframes float {
  0% { transform: translateY(100vh) rotate(0deg); opacity: 0; }
  10% { opacity: 1; }
  90% { opacity: 1; }
  100% { transform: translateY(-100px) rotate(360deg); opacity: 0; }
}

/* ===== PARTNERS ===== */
.partners {
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
  background: #fff;
}
.partners-label {
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.partners-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.partner-logo {
  opacity: 0.7;
  transition: var(--transition);
}
.partner-logo:hover { opacity: 1; }

/* ===== PRODUCTS GRID ===== */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.product-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.product-card .product-link { margin-top: auto; }
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: var(--transition);
}
.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}
.product-card:hover::before { opacity: 1; }
.product-icon {
  width: 72px;
  height: 72px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.product-name {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text);
}
.product-desc {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
  margin-bottom: 16px;
}
.product-features {
  margin-bottom: 24px;
}
.product-features li {
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 0;
  padding-left: 16px;
  position: relative;
}
.product-features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}
.product-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition);
}
.product-link:hover { color: var(--primary-dark); letter-spacing: 0.5px; }

/* ===== WHY US ===== */
.why-us { background: var(--secondary); }
.why-us-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.why-us .section-tag { background: rgba(26,111,234,0.2); color: #60b3ff; }
.why-us .section-title { color: #fff; }
.why-us .section-desc { color: rgba(255,255,255,0.65); }
.why-us p { color: rgba(255,255,255,0.65); margin-bottom: 16px; font-size: 15px; }
.advantage-list { display: flex; flex-direction: column; gap: 20px; margin-top: 32px; }
.advantage-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.adv-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(26,111,234,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.adv-icon svg path, .adv-icon svg circle { stroke: #60b3ff !important; }
.advantage-item h4 { font-size: 15px; color: #fff; margin-bottom: 4px; }
.advantage-item p { color: rgba(255,255,255,0.55); font-size: 14px; margin: 0; }

/* WHY US VISUAL */
.why-us-visual { position: relative; }
.visual-card {
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  backdrop-filter: blur(12px);
}
.main-card {
  background: rgba(26,111,234,0.2);
  border: 1px solid rgba(26,111,234,0.3);
  text-align: center;
  width: 100%;
  margin-bottom: 16px;
}
.side-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  text-align: center;
}
.vc-icon { font-size: 32px; margin-bottom: 8px; }
.vc-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.vc-sub { font-size: 12px; color: rgba(255,255,255,0.5); }
.vc-num { font-size: 28px; font-weight: 800; color: #fff; }
.vc-label { font-size: 12px; color: rgba(255,255,255,0.6); }

/* WHY US STATS BAR */
.why-us-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 16px;
}
.why-us-stats .visual-card {
  padding: 20px;
  text-align: center;
}

/* ===== CASES ===== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.case-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}
.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}
.case-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 12px;
}
.case-card h3 { font-size: 17px; margin-bottom: 12px; line-height: 1.4; }
.case-card p { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.case-meta { display: flex; gap: 16px; font-size: 13px; color: var(--text-muted); }

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 64px 0;
}
.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.cta-text h2 { font-size: 28px; color: #fff; font-weight: 700; margin-bottom: 8px; }
.cta-text p { color: rgba(255,255,255,0.75); font-size: 16px; }
.cta-actions { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== FOOTER ===== */
.footer { background: #0a1628; padding: 60px 0 0; }
.footer-top {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 60px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-slogan {
  color: rgba(255,255,255,0.5);
  font-size: 14px;
  line-height: 1.8;
  margin-top: 16px;
}
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.footer-col h4 { color: rgba(255,255,255,0.85); font-size: 15px; margin-bottom: 16px; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: rgba(255,255,255,0.5); font-size: 14px; transition: color 0.2s; }
.footer-col a:hover { color: rgba(255,255,255,0.9); }
.footer-col li:not(:has(a)) { color: rgba(255,255,255,0.5); font-size: 14px; }
.footer-bottom {
  padding: 20px 0;
  text-align: center;
  color: rgba(255,255,255,0.3);
  font-size: 13px;
}

/* ===== PAGE HERO ===== */
.page-hero {
  position: relative;
  padding: 120px 0 64px;
  overflow: hidden;
  background: linear-gradient(135deg, #0a1628 0%, #0e2460 70%, #0a3fa8 100%);
}
.page-hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
.page-hero .container { position: relative; z-index: 1; }
.breadcrumb { font-size: 13px; color: rgba(255,255,255,0.5); margin-bottom: 16px; }
.breadcrumb a { color: rgba(255,255,255,0.5); }
.breadcrumb a:hover { color: #fff; }
.page-hero h1 { font-size: 42px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.page-hero p { font-size: 18px; color: rgba(255,255,255,0.7); }

/* ===== ABOUT PAGE ===== */
.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-intro-content .section-title { text-align: left; }
.about-intro-content p { color: var(--text-muted); margin-bottom: 16px; font-size: 15px; }
.about-intro-content strong { color: var(--primary); }
.about-highlights {
  display: flex;
  gap: 32px;
  margin-top: 32px;
}
.hl-item { display: flex; flex-direction: column; }
.hl-num { font-size: 28px; font-weight: 800; color: var(--primary); }
.hl-num em { font-style: normal; font-size: 14px; }
.hl-text { font-size: 13px; color: var(--text-muted); }

/* Company Card */
.company-card-wrap { display: flex; justify-content: center; }
.company-visual-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-lg);
  max-width: 320px;
  width: 100%;
}
.cv-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}
.cv-company { font-size: 18px; font-weight: 700; }
.cv-sub { font-size: 13px; color: var(--text-muted); }
.cv-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.cv-tag {
  padding: 4px 10px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
}
.cv-mission {
  padding: 16px;
  background: var(--bg-alt);
  border-radius: 10px;
}
.cv-mission-label { font-size: 12px; color: var(--text-muted); margin-bottom: 6px; }
.cv-mission-text { font-size: 14px; font-weight: 600; color: var(--text); line-height: 1.6; }

/* TIMELINE */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 120px;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--accent));
}
.timeline-item {
  display: grid;
  grid-template-columns: 120px 20px 1fr;
  gap: 0 28px;
  align-items: start;
  margin-bottom: 40px;
  position: relative;
}
.timeline-year {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  text-align: right;
  padding-top: 4px;
}
.timeline-dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 2px var(--primary);
  position: relative;
  left: -7px;
  top: 6px;
  flex-shrink: 0;
}
.timeline-content {
  padding-bottom: 8px;
}
.timeline-content h4 { font-size: 17px; margin-bottom: 8px; color: var(--text); }
.timeline-content p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* HONORS */
.honors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}
.honor-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition);
}
.honor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}
.honor-icon { font-size: 32px; margin-bottom: 12px; }
.honor-card h4 { font-size: 16px; margin-bottom: 8px; }
.honor-card p { font-size: 14px; color: var(--text-muted); }

/* ===== PRODUCTS PAGE ===== */
.product-nav-bar {
  position: sticky;
  top: 72px;
  z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0;
}
.product-nav {
  display: flex;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}
.product-nav::-webkit-scrollbar { display: none; }
.pnav-item {
  padding: 16px 28px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 3px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.pnav-item:hover, .pnav-item.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* PRODUCT DETAIL */
.product-detail .section { padding: 80px 0; }
.pd-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.pd-grid.reverse { direction: rtl; }
.pd-grid.reverse > * { direction: ltr; }
.pd-badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 16px;
}
.pd-title { font-size: 30px; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.pd-desc { font-size: 15px; color: var(--text-muted); margin-bottom: 32px; line-height: 1.8; }
.pd-features { display: flex; flex-direction: column; gap: 20px; margin-bottom: 32px; }
.pd-feature-item { display: flex; gap: 16px; align-items: flex-start; }
.pfi-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.pd-feature-item h4 { font-size: 15px; margin-bottom: 4px; }
.pd-feature-item p { font-size: 13px; color: var(--text-muted); }

/* PD Visual Cards */
.pd-visual { display: flex; justify-content: center; }
.pd-visual-card {
  border-radius: var(--radius-lg);
  padding: 32px;
  min-width: 280px;
  max-width: 340px;
  width: 100%;
}
.blue-card { background: linear-gradient(135deg, #0e2460, #1a6fea); }
.green-card { background: linear-gradient(135deg, #0a3d20, #1db96a); }
.orange-card { background: linear-gradient(135deg, #3d2a00, #f5a623); }
.purple-card { background: linear-gradient(135deg, #2d0a3d, #9b59b6); }
.red-card { background: linear-gradient(135deg, #3d0a0a, #e74c3c); }
.pvc-title { color: rgba(255,255,255,0.8); font-size: 13px; margin-bottom: 20px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.pvc-items { display: flex; flex-direction: column; gap: 10px; margin-bottom: 24px; }
.pvc-item { display: flex; align-items: center; gap: 10px; color: rgba(255,255,255,0.85); font-size: 14px; }
.pvc-dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.pvc-dot.blue { background: #60b3ff; }
.pvc-dot.green { background: #7ef5b0; }
.pvc-dot.orange { background: #ffe57a; }
.pvc-dot.purple { background: #e4a8ff; }
.pvc-dot.red { background: #ff8a80; }
.pvc-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 20px;
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9);
  font-size: 12px;
  font-weight: 600;
}
.green-badge { background: rgba(255,255,255,0.2); }
.purple-badge { background: rgba(255,255,255,0.15); }
.red-badge { background: rgba(255,255,255,0.15); }

/* ARCH */
.pvc-arch { text-align: center; }
.arch-center {
  background: rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.95);
  font-weight: 700;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 15px;
  margin-bottom: 16px;
}
.arch-row { display: flex; gap: 12px; margin-bottom: 16px; }
.arch-sys {
  flex: 1;
  background: rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.8);
  padding: 10px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
}
.arch-tags { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.arch-tags span {
  padding: 4px 12px;
  border-radius: 12px;
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.75);
  font-size: 12px;
}

/* ===== CONTACT PAGE ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 440px;
  gap: 60px;
  align-items: start;
}

.contact-form-wrap h2 { font-size: 28px; margin-bottom: 8px; }
.form-sub { color: var(--text-muted); margin-bottom: 32px; font-size: 15px; }

.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: 8px; }
.form-group label { font-size: 14px; font-weight: 600; color: var(--text); }
.req { color: #e53e3e; }
.form-group input,
.form-group select,
.form-group textarea {
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 15px;
  color: var(--text);
  background: #fff;
  transition: var(--transition);
  font-family: inherit;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(26,111,234,0.08);
}
.form-group textarea { resize: vertical; min-height: 100px; }

.checkbox-group { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.checkbox-item {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 14px;
  color: var(--text-muted);
}
.checkbox-item input { display: none; }
.check-custom {
  width: 18px; height: 18px;
  border: 2px solid var(--border);
  border-radius: 4px;
  flex-shrink: 0;
  transition: var(--transition);
  position: relative;
}
.checkbox-item input:checked ~ .check-custom {
  background: var(--primary);
  border-color: var(--primary);
}
.checkbox-item input:checked ~ .check-custom::after {
  content: '';
  position: absolute;
  left: 4px; top: 2px;
  width: 6px; height: 9px;
  border: 2px solid #fff;
  border-left: none;
  border-top: none;
  transform: rotate(45deg);
}
.form-note { font-size: 12px; color: var(--text-muted); text-align: center; margin-top: -8px; }

.form-success {
  text-align: center;
  padding: 48px 32px;
}
.success-icon {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: #e8fff0;
  color: var(--green);
  font-size: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-weight: 700;
}
.form-success h3 { font-size: 22px; margin-bottom: 12px; }
.form-success p { color: var(--text-muted); }

/* Contact Cards - new layout */
.contact-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 1100px;
  margin: 0 auto;
}
.contact-card-main {
  text-align: center;
  padding: 32px 24px;
  transition: var(--transition);
}
.contact-card-main:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.card-icon-top {
  width: 64px;
  height: 64px;
  border-radius: 16px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}
.card-icon-top svg { width: 32px; height: 32px; }
.contact-card-main h3 {
  font-size: 20px;
  margin-bottom: 20px;
}
.contact-card-main .info-items {
  text-align: left;
}
.contact-card-main .service-time {
  text-align: center;
}

/* Contact Info */
.contact-info-wrap { display: flex; flex-direction: column; gap: 0; }
.contact-info-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.mt-16 { margin-top: 16px; }
.contact-info-card h3 { font-size: 18px; margin-bottom: 20px; }
.info-items { display: flex; flex-direction: column; gap: 16px; }
.info-item { display: flex; gap: 14px; align-items: flex-start; }
.info-icon {
  width: 40px; height: 40px;
  border-radius: 10px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.info-label { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.info-value { font-size: 15px; font-weight: 600; color: var(--text); }
.info-value a { color: var(--primary); }

.service-time { display: flex; flex-direction: column; gap: 0; }
.st-item { padding: 12px 0; }
.st-day { font-size: 14px; color: var(--text-muted); margin-bottom: 4px; }
.st-time { font-size: 16px; font-weight: 700; color: var(--text); }
.st-divider { height: 1px; background: var(--border); }

.qr-grid {
  display: flex;
  gap: 20px;
  justify-content: center;
}
.qr-item {
  text-align: center;
  flex: 1;
}
.qr-img-wrap {
  width: 140px;
  height: 140px;
  margin: 0 auto 10px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
}
.qr-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.qr-placeholder-video {
  background: var(--bg-alt);
  border: 2px dashed var(--border);
}
.qr-placeholder-video span {
  color: var(--text-muted);
  font-size: 13px;
}
.qr-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* SERVICE STEPS */
.service-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
}
.step-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  flex: 1;
  min-width: 140px;
  max-width: 180px;
  transition: var(--transition);
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}
.step-num { font-size: 11px; color: var(--text-muted); margin-bottom: 8px; font-weight: 700; letter-spacing: 1px; }
.step-icon { font-size: 28px; margin-bottom: 12px; }
.step-item h4 { font-size: 15px; margin-bottom: 8px; }
.step-item p { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.step-arrow {
  font-size: 20px;
  color: var(--primary);
  padding: 0 8px;
  opacity: 0.4;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .cases-grid { grid-template-columns: 1fr 1fr; }
  .why-us-inner { grid-template-columns: 1fr; gap: 48px; }
  .why-us-visual { max-width: 500px; margin: 0 auto; }
  .about-intro-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 900px) {
  .contact-cards { grid-template-columns: 1fr; max-width: 480px; }
}

@media (max-width: 768px) {
  /* Container smaller padding */
  .container { padding: 0 16px; }

  /* Header */
  .header-inner { height: 60px; gap: 16px; }
  .logo-img { height: 40px; }
  .nav, .nav-cta { display: none; }
  .hamburger { display: flex; }

  /* Mobile nav overlay */
  .nav.open {
    display: block;
    position: fixed;
    top: 60px; left: 0; right: 0; bottom: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    padding: 32px 24px;
    overflow-y: auto;
  }
  .nav.open .nav-list {
    flex-direction: column;
    gap: 8px;
  }
  .nav.open .nav-link {
    font-size: 18px;
    padding: 14px 16px;
    border-radius: 10px;
  }

  /* Hero */
  .hero {
    padding: 100px 0 60px;
  }
  .hero-stats { padding: 20px 16px; }
  .stat-item { padding: 0 16px; }
  .stat-num { font-size: 24px; }
  .hero-desc { font-size: 15px; padding: 0 16px; }
  .hero-scroll { display: none; }

  /* Sections */
  .section { padding: 48px 0; }
  .section-header { margin-bottom: 32px; }

  /* Products & Cases grid */
  .products-grid,
  .cases-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .product-card { padding: 24px 20px; }

  /* Why-us */
  .why-us .section-title { font-size: 22px; }
  .advantage-item { gap: 12px; }
  .adv-icon { width: 40px; height: 40px; }

  /* Cases */
  .case-meta { flex-wrap: wrap; gap: 8px; }

  /* CTA */
  .cta-section { padding: 40px 0; }
  .cta-inner { flex-direction: column; text-align: center; }
  .cta-text h2 { font-size: 22px; }
  .cta-text p { font-size: 15px; }
  .cta-actions { width: 100%; justify-content: center; }

  /* Product detail */
  .pd-grid { grid-template-columns: 1fr; gap: 40px; }
  .pd-grid.reverse { direction: ltr; }
  .pd-title { font-size: 24px; }

  /* Contact */
  .form-row { grid-template-columns: 1fr; }
  .checkbox-group { grid-template-columns: 1fr; }

  /* Timeline */
  .timeline::before { left: 60px; }
  .timeline-item { grid-template-columns: 60px 20px 1fr; gap: 0 16px; }
  .timeline-year { font-size: 14px; }

  /* Service steps */
  .service-steps { gap: 16px; }
  .step-arrow { display: none; }
  .step-item { min-width: 120px; max-width: 140px; padding: 20px 16px; }

  /* Footer */
  .footer { padding: 40px 0 0; }
  .footer-links { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-top { gap: 32px; padding-bottom: 32px; }

  /* Page hero */
  .page-hero { padding: 90px 0 40px; }
  .page-hero h1 { font-size: 28px; }
  .page-hero p { font-size: 15px; }

  /* Partners */
  .partners-logos { gap: 16px; }
  .partner-logo svg { width: 80px; height: 26px; }
}

@media (max-width: 480px) {
  /* Container */
  .container { padding: 0 12px; }

  /* Header */
  .header-inner { height: 56px; }
  .logo-img { height: 36px; }

  /* Mobile nav */
  .nav.open { top: 56px; padding: 24px 16px; }

  /* Hero */
  .hero {
    padding: 70px 0 30px;
  }
  .hero-content {
    padding: 0 12px;
    max-width: 100%;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-sizing: border-box;
  }
  .hero-title { font-size: 26px; letter-spacing: -0.5px; padding: 0; }
  .hero-desc { font-size: 14px; padding: 0; max-width: 100%; }
  .hero-badge { font-size: 11px; padding: 6px 12px; margin-bottom: 20px; }
  .hero-actions {
    padding: 0;
    width: 100%;
    justify-content: center;
    margin-bottom: 32px;
    gap: 12px;
  }
  .hero-actions .btn { width: 100%; max-width: 200px; }
  .hero-stats {
    flex-direction: column;
    width: 100%;
    max-width: 100%;
    margin: 0;
    padding: 16px 12px;
    align-items: center;
    box-sizing: border-box;
    gap: 0;
  }
  .stat-divider { width: 60px; height: 1px; margin: 0 auto; }
  .stat-item { padding: 8px 0; width: 100%; text-align: center; }
  .stat-num { font-size: 22px; }
  .stat-num em { font-size: 14px; }

  /* Sections */
  .section { padding: 36px 0; }
  .section-header { margin-bottom: 24px; }
  .section-title { font-size: 20px; }
  .section-desc { font-size: 14px; }
  .section-tag { font-size: 12px; padding: 5px 12px; }

  /* Partners */
  .partners { padding: 20px 0; }
  .partners-logos {
    gap: 12px;
    justify-content: center;
  }
  .partner-logo svg {
    width: 64px;
    height: 22px;
  }
  .partner-logo svg text {
    font-size: 10px !important;
  }

  /* Products & Cases */
  .product-card { padding: 20px 16px; border-radius: 16px; }
  .product-icon { width: 56px; height: 56px; border-radius: 12px; margin-bottom: 16px; }
  .product-icon svg { width: 32px; height: 32px; }
  .product-name { font-size: 17px; margin-bottom: 8px; }
  .product-desc { font-size: 13px; margin-bottom: 12px; }
  .case-card { padding: 20px 16px; border-radius: 16px; }
  .case-card h3 { font-size: 15px; }
  .case-card p { font-size: 13px; }
  .case-meta { font-size: 12px; }

  /* Why-us */
  .why-us { padding: 36px 0 !important; }
  .why-us .section-title { font-size: 19px; }
  .why-us .section-desc { font-size: 14px; }
  .why-us-stats { grid-template-columns: 1fr; }
  .visual-card { padding: 16px 12px; }
  .vc-num { font-size: 22px; }
  .vc-title { font-size: 13px; }
  .advantage-item h4 { font-size: 14px; }
  .advantage-item p { font-size: 13px; }

  /* CTA */
  .cta-section { padding: 32px 0; }
  .cta-text h2 { font-size: 18px; }
  .cta-text p { font-size: 14px; }
  .cta-actions .btn { width: 100%; max-width: 200px; }

  /* Footer */
  .footer { padding: 32px 0 0; }
  .footer-top { padding-bottom: 24px; }
  .footer-links { grid-template-columns: 1fr; gap: 20px; }
  .footer-col h4 { font-size: 14px; margin-bottom: 12px; }
  .footer-col a { font-size: 13px; }
  .footer-col li { margin-bottom: 8px; }
  .footer-slogan { font-size: 13px; }
  .footer-bottom { font-size: 12px; padding: 16px 0; }

  /* About */
  .about-highlights { flex-wrap: wrap; gap: 16px; }
  .hl-num { font-size: 22px; }
  .company-visual-card { max-width: 100%; padding: 24px 16px; }

  /* Timeline */
  .timeline::before { left: 36px; }
  .timeline-item { grid-template-columns: 36px 16px 1fr; gap: 0 10px; margin-bottom: 28px; }
  .timeline-year { font-size: 12px; }
  .timeline-dot { width: 10px; height: 10px; left: -5px; top: 5px; border-width: 2px; }
  .timeline-content h4 { font-size: 15px; }
  .timeline-content p { font-size: 13px; }

  /* Honors */
  .honors-grid { grid-template-columns: 1fr; }

  /* Product nav */
  .pnav-item { padding: 12px 14px; font-size: 13px; }
  .product-nav-bar { top: 56px; }

  /* QR codes */
  .qr-grid { flex-direction: column; align-items: center; }
  .qr-img-wrap { width: 120px; height: 120px; }

  /* Service steps */
  .service-steps { flex-direction: column; align-items: center; gap: 12px; }
  .step-item { min-width: 100%; max-width: 100%; }

  /* Touch targets */
  .btn { min-height: 44px; }
  .nav.open .nav-link { min-height: 48px; display: flex; align-items: center; }
}

/* ===== MOBILE NAV CTA ===== */
.nav.open .nav-cta-mobile {
  display: inline-flex;
  margin-top: 16px;
  width: 100%;
  justify-content: center;
}