/* ==================================================
   云斗萝集团官网 - Foxconn 白底商务风
   www.aidolo.com
   ================================================== */

:root {
  --primary: #2563eb;
  --primary-deep: #0b1d3f;
  --accent: #3b82f6;
  --navy: #0b1d3f;
  --text: #1f2937;
  --text-sub: #4b5563;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --color-primary: #0b1d3f;
  --color-primary-light: #1e3a8a;
  --color-accent: #2563eb;
  --color-accent-light: #3b82f6;
  --color-text: #1f2937;
  --color-text-secondary: #4b5563;
  --color-text-muted: #6b7280;
  --color-bg: #ffffff;
  --color-bg-soft: #f8fafc;
  --color-bg-alt: #f1f5f9;
  --color-border: #e2e8f0;
  --color-footer: #0b1220;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 12px 40px rgba(15, 23, 42, 0.12);
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--color-accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-primary-light); }

img { max-width: 100%; height: auto; }

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 8px 16px;
  z-index: 9999;
  border-radius: 0 0 8px 0;
  font-size: 14px;
  transition: top 0.2s;
}
.skip-link:focus { top: 0; outline: none; }

/* Selection color */
::selection { background: rgba(37,99,235,0.18); color: var(--color-primary); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  transition: var(--transition);
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(37, 99, 235, 0.25);
}
.btn-primary:hover { background: var(--color-primary-light); color: #fff; box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}
.btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); }

.btn-ghost {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-color: rgba(255,255,255,0.35);
}
.btn-ghost:hover { background: rgba(255,255,255,0.2); color: #fff; }

.btn-sm { padding: 8px 18px; font-size: 14px; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-primary);
}
.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-primary-light));
  color: #fff;
  font-weight: 800;
  border-radius: 10px;
  font-size: 14px;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.2; }
.logo-text strong { font-size: 17px; font-weight: 700; letter-spacing: 0.5px; }
.logo-text em { font-size: 11px; color: var(--color-text-muted); font-style: normal; letter-spacing: 1px; }

.main-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  position: relative;
  padding: 8px 14px;
  border-radius: 6px;
  color: var(--color-text-secondary);
  font-size: 15px;
  font-weight: 500;
}
.nav-link:hover { color: var(--color-accent); background: var(--color-bg-soft); }
.nav-link.active { color: var(--color-accent); background: rgba(37,99,235,0.08); }
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform 0.25s ease;
  border-radius: 2px;
}
.nav-link:hover::after,
.nav-link.active::after { transform: scaleX(1); transform-origin: left; }

.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-switch {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  padding: 6px 12px;
  border-radius: 6px;
}
.lang-switch:hover { border-color: var(--color-accent); color: var(--color-accent); }

.nav-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border: none;
  background: transparent;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-primary); transition: var(--transition); }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Flash messages */
.flash-wrap { padding-top: 16px; }
.flash { padding: 12px 18px; border-radius: 8px; margin-bottom: 10px; font-size: 14px; }
.flash-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.flash-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* Hero */
.hero {
  position: relative;
  min-height: 720px;
  display: flex;
  align-items: center;
  color: #fff;
  overflow: hidden;
  background: linear-gradient(135deg, #0b1d3f 0%, #112765 40%, #1e40af 70%, #2563eb 100%);
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(59,130,246,0.28) 0%, transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(37,99,235,0.22) 0%, transparent 40%),
    url("data:image/svg+xml,%3Csvg width='80' height='80' viewBox='0 0 80 80' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.035'%3E%3Cpath d='M50 44h-4v4h-4v4h4v4h4v-4h4v-4h-4v-4zm0-40v-4h-4v4h-4v4h4v4h4V8h4V4h-4zM10 44H6v4H2v4h4v4h4v-4h4v-4h-4v-4zM10 4V0H6v4H2v4h4v4h4V8h4V4h-4z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.8;
}
.hero::after {
  content: '';
  position: absolute;
  right: -5%;
  top: -20%;
  width: 65%;
  height: 140%;
  background: radial-gradient(circle at 50% 50%, rgba(96,165,250,0.18) 0%, transparent 60%);
  pointer-events: none;
}
.hero-shapes {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}
.hero-shapes .shape {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.08);
  animation: float 8s ease-in-out infinite;
}
.hero-shapes .shape:nth-child(1) { width: 320px; height: 320px; right: 10%; top: 15%; animation-delay: 0s; }
.hero-shapes .shape:nth-child(2) { width: 180px; height: 180px; right: 28%; top: 55%; animation-delay: -2s; }
.hero-shapes .shape:nth-child(3) { width: 100px; height: 100px; right: 6%; top: 60%; animation-delay: -4s; }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-18px); }
}
.hero-inner { position: relative; z-index: 2; padding: 140px 0 120px; }
.hero-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #93c5fd;
  margin-bottom: 20px;
  padding: 8px 16px;
  border: 1px solid rgba(147,197,253,0.35);
  border-radius: 30px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(4px);
}
.hero h1 { font-size: 58px; line-height: 1.12; font-weight: 800; margin-bottom: 26px; max-width: 760px; letter-spacing: -0.5px; }
.hero-desc { font-size: 18px; line-height: 1.8; color: #dbeafe; max-width: 640px; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 18px; flex-wrap: wrap; }

/* Hero secondary (inner pages) */
.hero-sm {
  min-height: 320px;
  padding: 100px 0 70px;
  background: linear-gradient(135deg, #0b1d3f 0%, #1e3a8a 100%);
  text-align: center;
}
.hero-sm h1 { font-size: 42px; margin-bottom: 14px; }
.hero-sm p { font-size: 17px; color: #bfdbfe; max-width: 720px; margin: 0 auto; }

/* Section common */
.section { padding: 100px 0; }
.section-alt { background: var(--color-bg-soft); }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 60px;
}
.section-kicker {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--color-accent);
  margin-bottom: 12px;
}
.section-title { font-size: 36px; font-weight: 800; color: var(--color-primary); margin-bottom: 14px; }
.section-sub { font-size: 17px; color: var(--color-text-secondary); }
.section-more { text-align: center; margin-top: 48px; }

/* Stats bar */
.stats-bar { background: linear-gradient(180deg, var(--color-bg) 0%, #fff 100%); border-bottom: 1px solid var(--color-border); padding: 56px 0; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-item {
  padding: 18px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.stat-item:hover {
  background: #fff;
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}
.stat-item strong {
  display: block;
  font-size: 44px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-item span { font-size: 15px; color: var(--color-text-muted); margin-top: 8px; display: block; letter-spacing: 0.5px; }

/* About grid */
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}
.about-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 34px;
  transition: var(--transition);
}
.about-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); border-color: transparent; }
.about-card h3 { font-size: 20px; color: var(--color-primary); margin-bottom: 14px; }
.about-card p { color: var(--color-text-secondary); font-size: 15px; }

/* Business / Product cards */
.business-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.business-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  transition: var(--transition);
}
.business-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-6px); border-color: transparent; }
.business-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(37,99,235,0.12), rgba(37,99,235,0.04));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  transition: var(--transition);
}
.business-icon svg { width: 34px; height: 34px; stroke-width: 1.6; }
.business-card:hover .business-icon { transform: scale(1.08); background: linear-gradient(135deg, rgba(37,99,235,0.18), rgba(37,99,235,0.08)); }
.business-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-accent);
  background: rgba(37,99,235,0.08);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 14px;
}
.business-card h3 { font-size: 20px; color: var(--color-primary); margin-bottom: 12px; }
.business-card p { font-size: 15px; color: var(--color-text-secondary); line-height: 1.7; }

/* News */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.news-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}
.news-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: transparent; }
.news-cover {
  height: 200px;
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}
.news-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 40%, rgba(11,29,63,0.35) 100%);
  opacity: 0;
  transition: opacity 0.3s;
}
.news-card:hover .news-cover::after { opacity: 1; }
.news-card:hover .news-cover { transform: scale(1.03); }
.news-cover-text { color: #fff; font-size: 14px; font-weight: 700; letter-spacing: 1px; opacity: 0.9; z-index: 1; position: relative; }
.news-body { padding: 26px; flex: 1; }
.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}
.news-cat {
  color: var(--color-accent);
  background: rgba(37,99,235,0.08);
  padding: 2px 10px;
  border-radius: 20px;
  font-weight: 600;
}
.news-card h3 { font-size: 18px; color: var(--color-primary); margin-bottom: 12px; line-height: 1.45; }
.news-card p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* Media & Honors */
.media-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}
.video-main {
  background: var(--color-bg);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}
.video-main video { width: 100%; display: block; aspect-ratio: 16/9; background: #000; }
.video-main h3 { padding: 22px 26px 6px; font-size: 19px; color: var(--color-primary); }
.video-main p { padding: 0 26px 22px; font-size: 14px; color: var(--color-text-secondary); }
.honor-area { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 28px; }
.honor-title { font-size: 20px; color: var(--color-primary); margin-bottom: 20px; }
.honor-list { list-style: none; }
.honor-list li {
  display: flex;
  gap: 18px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
}
.honor-list li:last-child { border-bottom: none; }
.honor-year {
  flex-shrink: 0;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-accent);
  background: rgba(37,99,235,0.08);
  padding: 4px 10px;
  border-radius: 6px;
  height: fit-content;
}
.honor-list strong { display: block; font-size: 16px; color: var(--color-primary); margin-bottom: 4px; }
.honor-list em { font-size: 14px; color: var(--color-text-muted); font-style: normal; }

/* Matrix */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}
.matrix-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  transition: var(--transition);
  display: block;
}
.matrix-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: transparent; }
.matrix-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--color-bg-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  margin-bottom: 16px;
}
.matrix-icon svg { width: 26px; height: 26px; stroke-width: 1.7; }
.matrix-card h3 { font-size: 17px; color: var(--color-primary); margin-bottom: 6px; }
.matrix-domain { font-size: 12px; color: var(--color-accent); margin-bottom: 10px; }
.matrix-desc { font-size: 14px; color: var(--color-text-secondary); line-height: 1.6; margin-bottom: 14px; }
.matrix-link { font-size: 13px; font-weight: 700; color: var(--color-accent); }
.matrix-card:hover .matrix-link { color: var(--color-primary-light); }

/* Careers */
.job-list { display: flex; flex-direction: column; gap: 18px; }
.job-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  transition: var(--transition);
}
.job-card:hover { box-shadow: var(--shadow-hover); border-color: transparent; transform: translateY(-2px); }
.job-info h3 { font-size: 19px; color: var(--color-primary); margin-bottom: 8px; }
.job-meta { display: flex; gap: 16px; color: var(--color-text-muted); font-size: 14px; flex-wrap: wrap; }
.job-meta span { display: flex; align-items: center; gap: 6px; }

/* Products page */
.product-category { margin-bottom: 60px; }
.product-category:last-child { margin-bottom: 0; }
.product-category h2 {
  font-size: 24px;
  color: var(--color-primary);
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--color-border);
}
.product-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-item {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 30px;
  transition: var(--transition);
}
.product-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: transparent; }
.product-item h3 { font-size: 18px; color: var(--color-primary); margin-bottom: 10px; }
.product-item p { font-size: 14px; color: var(--color-text-secondary); line-height: 1.7; }

/* Page content (CSR / Investor / Contact) */
.page-content { max-width: 860px; margin: 0 auto; }
.page-content h2 { font-size: 26px; color: var(--color-primary); margin: 36px 0 16px; }
.page-content h3 { font-size: 20px; color: var(--color-primary); margin: 28px 0 12px; }
.page-content p { font-size: 16px; color: var(--color-text-secondary); line-height: 1.9; margin-bottom: 18px; }
.page-content ul { margin-left: 22px; margin-bottom: 18px; color: var(--color-text-secondary); }
.page-content li { margin-bottom: 8px; }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 50px;
  align-items: start;
}
.contact-info h3 { font-size: 22px; color: var(--color-primary); margin-bottom: 20px; }
.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 22px;
}
.contact-info-item .icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(37,99,235,0.08);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-info-item strong { display: block; font-size: 14px; color: var(--color-text-muted); margin-bottom: 4px; }
.contact-info-item span { font-size: 16px; color: var(--color-text); }
.contact-map {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  min-height: 420px;
  overflow: hidden;
}
.contact-map-placeholder {
  height: 100%;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  text-align: center;
  padding: 40px;
  background: linear-gradient(135deg, rgba(37,99,235,0.03), rgba(37,99,235,0.06));
}
.contact-map-placeholder svg {
  color: var(--color-accent);
  margin-bottom: 16px;
  opacity: 0.7;
}
.contact-map-placeholder span {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 8px;
}
.contact-map-placeholder p {
  font-size: 14px;
  color: var(--color-text-muted);
  max-width: 280px;
}
.contact-form {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px;
}
.form-row { margin-bottom: 20px; }
.form-row label { display: block; font-size: 14px; font-weight: 600; color: var(--color-primary); margin-bottom: 8px; }
.form-row input,
.form-row textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 15px;
  font-family: inherit;
  color: var(--color-text);
  transition: var(--transition);
}
.form-row input:focus,
.form-row textarea:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(37,99,235,0.08); outline: none; }
.form-row textarea { min-height: 120px; resize: vertical; }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: var(--color-text-muted);
  margin-bottom: 30px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--color-text-secondary); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb-sep { opacity: 0.5; }
.breadcrumb-current { color: var(--color-primary); font-weight: 500; }

/* Filter / categories */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-bar a {
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 14px;
  color: var(--color-text-secondary);
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
}
.filter-bar a:hover { border-color: var(--color-accent); color: var(--color-accent); }
.filter-bar a.active { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }

/* Pagination */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 48px; }
.pagination a, .pagination span {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  font-size: 14px;
  color: var(--color-text-secondary);
}
.pagination a:hover { border-color: var(--color-accent); color: var(--color-accent); }
.pagination span.current { background: var(--color-accent); color: #fff; border-color: var(--color-accent); }

/* News detail */
.article-header { max-width: 860px; margin: 0 auto 40px; text-align: center; }
.article-header h1 { font-size: 34px; color: var(--color-primary); margin-bottom: 18px; line-height: 1.35; }
.article-meta { color: var(--color-text-muted); font-size: 14px; display: flex; justify-content: center; gap: 18px; }
.article-cover {
  width: 100%;
  max-width: 900px;
  height: 380px;
  margin: 0 auto 40px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  background-size: cover;
  background-position: center;
}
.article-content {
  max-width: 800px;
  margin: 0 auto;
  font-size: 17px;
  line-height: 1.9;
  color: var(--color-text);
}
.article-content p { margin-bottom: 20px; }
.article-nav {
  max-width: 800px;
  margin: 50px auto 0;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
}
.article-nav a { color: var(--color-text-secondary); font-size: 15px; max-width: 45%; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.article-nav a:hover { color: var(--color-accent); }

/* Back to top */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  border: none;
  box-shadow: 0 4px 14px rgba(37,99,235,0.35);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all 0.25s ease;
  z-index: 999;
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: var(--color-primary-light); transform: translateY(-2px); }
.back-to-top svg { width: 20px; height: 20px; }

/* Footer */
.site-footer { background: var(--color-footer); color: #94a3b8; padding: 70px 0 0; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 50px;
  padding-bottom: 60px;
}
.footer-logo .logo-mark { background: rgba(255,255,255,0.1); }
.footer-logo .logo-text strong { color: #fff; }
.footer-brand p { margin-top: 18px; font-size: 15px; line-height: 1.8; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 16px; margin-bottom: 20px; font-weight: 600; }
.footer-col a, .footer-col span { display: block; color: #94a3b8; font-size: 14px; margin-bottom: 10px; }
.footer-col a:hover { color: #fff; }
/* 成员企业列：子公司较多时自动两列排布，便于后续追加 */
.footer-col-members .member-links { display: grid; grid-template-columns: 1fr 1fr; column-gap: 12px; }
.footer-col-members .member-links a { margin-bottom: 8px; font-size: 13.5px; white-space: nowrap; }
@media (max-width: 600px) { .footer-col-members .member-links { grid-template-columns: 1fr; } }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 22px 0; }
.footer-bottom span { font-size: 13px; color: #64748b; }

/* 404 */
.error-page { text-align: center; padding: 120px 0; }
.error-page h1 { font-size: 100px; color: var(--color-accent); line-height: 1; margin-bottom: 10px; }
.error-page h2 { font-size: 28px; color: var(--color-primary); margin-bottom: 16px; }
.error-page p { color: var(--color-text-secondary); margin-bottom: 30px; }

/* Responsive */
@media (max-width: 1100px) {
  .main-nav { display: none; position: absolute; top: 72px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--color-border); box-shadow: var(--shadow); }
  .main-nav.open { display: flex; }
  .nav-link { width: 100%; }
  .nav-toggle { display: flex; }
  .header-actions { margin-left: auto; margin-right: 16px; }
  .business-grid { grid-template-columns: repeat(2, 1fr); }
  .matrix-grid { grid-template-columns: repeat(3, 1fr); }
  .product-list { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .hero h1 { font-size: 40px; }
  .hero { min-height: 560px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px 20px; }
  .about-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .media-grid { grid-template-columns: 1fr; }
  .matrix-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px 30px; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero-sm h1 { font-size: 32px; }
  .product-list { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .container { padding: 0 18px; }
  .hero h1 { font-size: 32px; }
  .hero-desc { font-size: 16px; }
  .section { padding: 70px 0; }
  .section-title { font-size: 28px; }
  .business-grid { grid-template-columns: 1fr; }
  .matrix-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .job-card { flex-direction: column; align-items: flex-start; }
  .article-header h1 { font-size: 26px; }
  .contact-form { padding: 24px; }
}

/* Utility */
.text-center { text-align: center; }
.empty-tip { text-align: center; color: var(--color-text-muted); padding: 40px 0; }

/* Scroll reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}
.reveal.delay-1 { transition-delay: 0.1s; }
.reveal.delay-2 { transition-delay: 0.2s; }
.reveal.delay-3 { transition-delay: 0.3s; }

/* Stagger for grids */
.stagger-grid > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.stagger-grid.active > * { opacity: 1; transform: translateY(0); }
.stagger-grid.active > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-grid.active > *:nth-child(2) { transition-delay: 0.12s; }
.stagger-grid.active > *:nth-child(3) { transition-delay: 0.19s; }
.stagger-grid.active > *:nth-child(4) { transition-delay: 0.26s; }
.stagger-grid.active > *:nth-child(5) { transition-delay: 0.33s; }
.stagger-grid.active > *:nth-child(6) { transition-delay: 0.40s; }
.stagger-grid.active > *:nth-child(7) { transition-delay: 0.47s; }
.stagger-grid.active > *:nth-child(8) { transition-delay: 0.54s; }

/* Focus visible */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  html { scroll-behavior: auto; }
  .reveal, .stagger-grid > * { opacity: 1; transform: none; }
}