/* ============================================
   浩声新材料网站 - 全局样式表
   Version: 1.0.0
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
  --primary: #1565C0;
  --primary-dark: #0D47A1;
  --primary-light: #1976D2;
  --accent: #FF6D00;
  --accent-hover: #E65100;
  --light-bg: #F0F7FF;
  --white: #FFFFFF;
  --text-dark: #1A1A1A;
  --text-muted: #6B7280;
  --text-light: #9CA3AF;
  --border: #E2E8F0;
  --border-light: #F3F4F6;
  --shadow: 0 4px 20px rgba(21, 101, 192, 0.12);
  --shadow-lg: 0 10px 40px rgba(21, 101, 192, 0.18);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --font: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.2s ease;
  --container-max: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, video, svg {
  display: block;
  max-width: 100%;
}

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-dark);
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.main-content {
  flex: 1;
  margin-top: var(--header-height);
}

/* Grid System */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

/* Flex Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 0.25rem; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 0.75rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

/* Text Utilities */
.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-accent { color: var(--accent); }
.text-muted { color: var(--text-muted); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }

/* Spacing Utilities */
.mt-2 { margin-top: 0.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(21, 101, 192, 0.08);
  box-shadow: 0 2px 16px rgba(21, 101, 192, 0.06);
  transition: var(--transition);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.99);
  box-shadow: 0 4px 24px rgba(21, 101, 192, 0.1);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.logo img {
  height: 48px;
  width: auto;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: 1px;
  line-height: 1.2;
}

.logo-tagline {
  font-size: 0.6875rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

.main-nav {
  display: flex;
  align-items: center;
  flex: 1;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: block;
  padding: 0.5rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-dark);
  border-radius: var(--radius-sm);
  transition: var(--transition);
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: rgba(21, 101, 192, 0.06);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.header-phone {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: white;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(255, 109, 0, 0.25);
  transition: var(--transition);
}

.header-phone:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(255, 109, 0, 0.3);
  color: white;
}

.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-dark);
  font-size: 1.375rem;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.hamburger:hover {
  background: rgba(21, 101, 192, 0.08);
  color: var(--primary);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: white;
  z-index: 999;
  overflow-y: auto;
  padding: 1rem 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

.mobile-menu.open {
  display: block;
}

.mobile-nav-list {
  padding: 0 1rem;
}

.mobile-nav-link {
  display: block;
  padding: 0.875rem 1rem;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-dark);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  border-bottom: 1px solid var(--border-light);
}

.mobile-nav-link:last-child {
  border-bottom: none;
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background: var(--light-bg);
  color: var(--primary);
}

.mobile-phone {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}

.mobile-phone a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem;
  background: var(--accent);
  color: white;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 1rem;
}

.mobile-header-actions {
  padding: 0.75rem 1.5rem;
  border-top: 1px solid var(--border);
  margin-top: 0.5rem;
}

/* ---------- Footer ---------- */
.site-footer {
  background: linear-gradient(180deg, var(--primary-dark) 0%, #0a3a8c 100%);
  color: white;
  position: relative;
  margin-top: auto;
}

.footer-wave {
  height: 6px;
  background: linear-gradient(90deg, var(--accent), var(--primary), var(--accent));
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  padding: 4rem 0 3rem;
}

.footer-brand {
  grid-column: 1 / -1;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: 1.25rem;
}

.footer-logo-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.375rem;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.footer-logo-icon svg {
  width: 28px;
  height: 28px;
  fill: white;
}

.footer-logo-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: white;
  line-height: 1.2;
}

.footer-logo-sub {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 2px;
}

.footer-desc {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.75;
  margin-bottom: 1.5rem;
  max-width: 400px;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}

.social-link {
  width: 38px;
  height: 38px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
  transition: var(--transition);
}

.social-link:hover {
  background: rgba(255, 109, 0, 0.5);
  border-color: var(--accent);
  transform: translateY(-2px);
}

.social-link svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.footer-heading {
  font-size: 1rem;
  font-weight: 700;
  color: white;
  margin-bottom: 1.25rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.footer-links a::before {
  content: '›';
  color: var(--accent);
  font-weight: 700;
  font-size: 1.125rem;
  line-height: 1;
}

.footer-links a:hover {
  color: white;
  padding-left: 4px;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.65);
}

.footer-contact li svg {
  width: 18px;
  height: 18px;
  fill: var(--accent);
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-contact li a {
  color: rgba(255, 255, 255, 0.8);
  transition: var(--transition-fast);
}

.footer-contact li a:hover {
  color: white;
}

.footer-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  padding: 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 1rem;
}

.badge-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 500;
  transition: var(--transition);
}

.badge-item:hover {
  background: rgba(255, 109, 0, 0.25);
  border-color: rgba(255, 109, 0, 0.5);
  color: white;
}

.badge-item svg {
  width: 16px;
  height: 16px;
  fill: var(--accent);
}

.footer-bottom {
  background: rgba(0, 0, 0, 0.2);
  padding: 1.25rem 0;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.copyright {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

.icp {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.4);
}

.icp a {
  color: rgba(255, 255, 255, 0.5);
  transition: var(--transition-fast);
}

.icp a:hover {
  color: rgba(255, 255, 255, 0.8);
}

/* ---------- Hero Section ---------- */
.hero {
  min-height: 100vh;
  background: linear-gradient(145deg, var(--primary-dark) 0%, var(--primary) 45%, var(--primary-light) 70%, var(--primary-dark) 100%);
  position: relative;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 80%, rgba(255, 109, 0, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse 60% 80% at 80% 20%, rgba(255, 255, 255, 0.06) 0%, transparent 50%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 8rem 0 6rem;
  width: 100%;
}

.hero-text {
  color: #fff;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
  backdrop-filter: blur(8px);
  animation: fadeInUp 0.6s ease-out both;
}

.hero-badge svg {
  width: 16px;
  height: 16px;
  fill: var(--accent);
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.25;
  margin-bottom: 1.25rem;
  animation: fadeInUp 0.6s 0.15s ease-out both;
}

.hero-title em {
  font-style: normal;
  color: var(--accent);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.375rem);
  color: rgba(255, 255, 255, 0.8);
  font-weight: 400;
  margin-bottom: 0.75rem;
  animation: fadeInUp 0.6s 0.3s ease-out both;
}

.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
  margin-bottom: 2.75rem;
  animation: fadeInUp 0.6s 0.4s ease-out both;
}

.hero-stat {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.75);
}

.hero-stat svg {
  width: 8px;
  height: 8px;
  fill: var(--accent);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  animation: fadeInUp 0.6s 0.5s ease-out both;
}

.hero-image {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeInUp 0.6s 0.3s ease-out both;
}

.hero-image-placeholder {
  width: 100%;
  max-width: 480px;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.hero-image-placeholder svg {
  width: 80px;
  height: 80px;
  fill: rgba(255, 255, 255, 0.3);
}

.hero-image-placeholder span {
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

.scroll-arrow {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.6875rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.5);
  animation: bounce-arrow 2s infinite;
}

.scroll-arrow svg {
  width: 20px;
  height: 20px;
  fill: rgba(255, 255, 255, 0.5);
}

/* ---------- Page Hero ---------- */
.page-hero {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  padding: 8rem 0 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-top: var(--header-height);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/svg%3E");
}

.page-hero-label {
  display: inline-block;
  color: var(--accent);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  color: white;
  margin-bottom: 1rem;
}

.page-hero-sub {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.125rem;
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.hero-badge-item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.875rem;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.hero-badge-item svg {
  width: 14px;
  height: 14px;
  fill: var(--accent);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 1rem 0;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: var(--header-height);
  background: var(--light-bg);
}

.breadcrumb a {
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--primary);
}

.breadcrumb svg {
  width: 14px;
  height: 14px;
  fill: var(--text-light);
}

.breadcrumb span {
  color: var(--text-dark);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 109, 0, 0.4);
  color: white;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.1);
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.5);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: white;
  transform: translateY(-2px);
  color: white;
}

.btn-secondary {
  background: var(--primary);
  color: white;
}

.btn-secondary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(21, 101, 192, 0.4);
  color: white;
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline-primary:hover {
  background: var(--primary);
  color: white;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* ---------- Cards ---------- */
.card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(21, 101, 192, 0.3);
}

.card-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.card-image svg {
  width: 64px;
  height: 64px;
  fill: rgba(255, 255, 255, 0.3);
}

.card-image-text {
  color: rgba(255, 255, 255, 0.55);
  font-size: 0.8125rem;
  margin-top: 0.5rem;
}

.card-badge {
  position: absolute;
  top: 0.875rem;
  right: 0.875rem;
  background: var(--accent);
  color: white;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-body {
  padding: 1.75rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 0.625rem;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 0.875rem;
}

.card-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.625rem;
  background: var(--light-bg);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid rgba(21, 101, 192, 0.15);
}

.card-tag.accent {
  background: rgba(255, 109, 0, 0.08);
  color: var(--accent);
  border-color: rgba(255, 109, 0, 0.2);
}

.card-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.card-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.75rem 1.5rem;
  background: var(--accent);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
}

.card-btn:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(255, 109, 0, 0.35);
}

.card-btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* ---------- Stat Cards ---------- */
.stat-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow);
  border: 1px solid #EEF4FF;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.35s ease;
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.stat-card:hover::before {
  opacity: 1;
}

.stat-number {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-unit {
  font-size: 1.25rem;
  color: var(--accent);
  font-weight: 700;
}

.stat-label {
  font-size: 0.9375rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 0.5rem;
}

/* ---------- SSSS Cards ---------- */
.ssss-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  border: 1.5px solid #EEF4FF;
  transition: var(--transition);
}

.ssss-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.ssss-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--light-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  transition: var(--transition);
}

.ssss-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--primary);
  transition: var(--transition);
}

.ssss-card:hover .ssss-icon {
  background: var(--primary);
}

.ssss-card:hover .ssss-icon svg {
  fill: white;
  transform: scale(1.08);
}

.ssss-letter {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 0.375rem;
  letter-spacing: 3px;
}

.ssss-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.ssss-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ---------- Product Cards ---------- */
.product-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 2rem 1.5rem;
  text-align: center;
  border: 1.5px solid #EEF4FF;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.product-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
}

.product-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--light-bg), #E3EDFF);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  transition: var(--transition);
}

.product-icon svg {
  width: 32px;
  height: 32px;
  fill: var(--primary);
  transition: var(--transition);
}

.product-card:hover .product-icon {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}

.product-card:hover .product-icon svg {
  fill: white;
  transform: rotate(5deg) scale(1.05);
}

.product-name {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.product-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
}

.product-tag {
  display: inline-block;
  margin-top: 0.875rem;
  padding: 0.3125rem 0.875rem;
  background: rgba(21, 101, 192, 0.08);
  color: var(--primary);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  transition: all 0.25s ease;
}

.product-card:hover .product-tag {
  background: var(--accent);
  color: white;
}

/* ---------- App Cards ---------- */
.app-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid #EEF4FF;
  transition: var(--transition);
}

.app-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.app-image {
  height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.app-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 71, 161, 0.7), rgba(21, 101, 192, 0.4));
}

.app-image svg {
  position: relative;
  z-index: 1;
  width: 64px;
  height: 64px;
  fill: rgba(255, 255, 255, 0.9);
}

.app-card:nth-child(1) .app-image { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); }
.app-card:nth-child(2) .app-image { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.app-card:nth-child(3) .app-image { background: linear-gradient(135deg, var(--primary-dark), #004D9E); }
.app-card:nth-child(4) .app-image { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); }

.app-body {
  padding: 1.5rem;
}

.app-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.app-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.app-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--primary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all 0.25s ease;
}

.app-link:hover {
  color: var(--accent);
  gap: 0.625rem;
}

.app-link svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

/* ---------- Case Cards ---------- */
.case-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.case-image {
  height: 180px;
  background: linear-gradient(135deg, var(--primary-dark), var(--primary));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.case-image svg {
  width: 48px;
  height: 48px;
  fill: rgba(255, 255, 255, 0.3);
}

.case-badge {
  position: absolute;
  top: 0.875rem;
  left: 0.875rem;
  background: var(--accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
}

.case-body {
  padding: 1.5rem;
}

.case-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.case-meta span {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.case-meta svg {
  width: 14px;
  height: 14px;
  fill: var(--text-light);
}

.case-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ---------- News Cards ---------- */
.news-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  transition: var(--transition);
}

.news-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.news-date {
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-bottom: 0.5rem;
}

.news-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
  transition: var(--transition-fast);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card:hover .news-title {
  color: var(--primary);
}

.news-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ---------- Cert Badges ---------- */
.cert-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  background: var(--white);
  border-radius: var(--radius-full);
  border: 1.5px solid var(--border);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-dark);
  transition: all 0.3s ease;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.cert-badge:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(21, 101, 192, 0.15);
}

.cert-badge svg {
  width: 18px;
  height: 18px;
  fill: var(--accent);
}

/* ---------- CTA Section ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 50%, var(--primary-light) 100%);
  position: relative;
  overflow: hidden;
  padding: 5rem 0;
  text-align: center;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 70% 80% at 90% 50%, rgba(255, 109, 0, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  margin: 0 auto;
}

.cta-section h2 {
  color: white;
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  margin-bottom: 1rem;
}

.cta-phone {
  font-size: clamp(2.25rem, 6vw, 3.5rem);
  font-weight: 800;
  color: #fff;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.cta-phone svg {
  width: 40px;
  height: 40px;
  fill: var(--accent);
}

.cta-phone-label {
  text-align: center;
  font-size: 1.0625rem;
  color: rgba(255, 255, 255, 0.7);
  margin-bottom: 2.5rem;
}

.consult-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: 0 20px 60px rgba(13, 71, 161, 0.25);
  text-align: left;
}

.consult-form h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 1.5rem;
  text-align: center;
}

/* ---------- Forms ---------- */
.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-dark);
  margin-bottom: 0.5rem;
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  color: var(--text-dark);
  background: var(--white);
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-light);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236B7280' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

/* ---------- Section Headers ---------- */
.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-label {
  display: inline-block;
  background: var(--light-bg);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  letter-spacing: 1px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.0625rem;
}

.section-divider {
  width: 3.5rem;
  height: 4px;
  background: var(--accent);
  border-radius: 4px;
  margin: 1rem auto 0;
}

/* ---------- Specs Table ---------- */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.specs-table th {
  background: var(--light-bg);
  color: var(--primary);
  font-weight: 700;
  padding: 0.75rem 1rem;
  text-align: left;
  white-space: nowrap;
  width: 35%;
}

.specs-table td {
  padding: 0.75rem 1rem;
  color: var(--text-dark);
  border-top: 1px solid var(--border);
}

.specs-table tr:nth-child(even) td {
  background: #F8FBFF;
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounce-arrow {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-12px);
  }
}

@keyframes countUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in {
  animation: fadeInUp 0.6s ease-out both;
}

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }
.animate-delay-4 { animation-delay: 0.4s; }
.animate-delay-5 { animation-delay: 0.5s; }

/* Scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- News Column (行业新闻栏目) ---------- */
.news-toolbar {
  position: sticky;
  top: var(--header-height);
  z-index: 60;
  background: rgba(255, 255, 255, 0.97);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.news-tabs {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.news-tabs::-webkit-scrollbar { display: none; }

.news-tab {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1.125rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition);
}

.news-tab:hover {
  color: var(--primary);
  border-color: rgba(21, 101, 192, 0.35);
  background: rgba(21, 101, 192, 0.04);
}

.news-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(21, 101, 192, 0.25);
}

.news-tab-count {
  font-size: 0.75rem;
  font-weight: 700;
  opacity: 0.7;
}

.news-tabs-spacer {
  margin-left: auto;
  padding-left: 1rem;
  font-size: 0.8125rem;
  color: var(--text-light);
  white-space: nowrap;
}

.news-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 2.5rem;
  align-items: start;
}

/* Featured / 头条 */
.news-featured {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  margin-bottom: 1.75rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.news-featured:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.news-featured-cover {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  padding: 2rem;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--primary-light) 100%);
}

.news-featured-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 15%, rgba(255, 255, 255, 0.22), transparent 62%);
}

.news-featured-cover svg {
  width: 64px;
  height: 64px;
  color: rgba(255, 255, 255, 0.92);
  position: relative;
  z-index: 1;
}

.news-featured-flag {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
  padding: 0.25rem 0.625rem;
  background: var(--accent);
  border-radius: var(--radius-full);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.news-featured-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.75rem 2rem;
}

.news-featured-title {
  margin: 0.625rem 0 0.75rem;
  font-size: 1.375rem;
  font-weight: 800;
  line-height: 1.45;
}

.news-featured-title a:hover { color: var(--primary); }

.news-featured-desc {
  margin-bottom: 1.125rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  color: var(--text-light);
  font-size: 0.8125rem;
}

.news-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.news-meta svg { width: 14px; height: 14px; }

/* List / 列表 */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.news-item {
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr) 24px;
  gap: 1.5rem;
  align-items: start;
  padding: 1.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.news-item:hover {
  transform: translateY(-3px);
  border-color: rgba(21, 101, 192, 0.25);
  box-shadow: var(--shadow);
}

.news-item-date {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 0.25rem;
  background: var(--light-bg);
  border-radius: var(--radius-sm);
  color: var(--primary-dark);
}

.news-item-date b {
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
}

.news-item-date i {
  margin-top: 0.375rem;
  color: var(--text-muted);
  font-size: 0.6875rem;
  font-style: normal;
  letter-spacing: 0.5px;
}

.news-item-title {
  margin-bottom: 0.5rem;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
}

.news-item-title a:hover { color: var(--primary); }

.news-item-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-item-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.news-item-arrow {
  align-self: center;
  color: var(--text-light);
  transition: var(--transition);
}

.news-item:hover .news-item-arrow {
  color: var(--primary);
  transform: translateX(4px);
}

/* Sidebar / 侧栏 */
.news-side {
  position: sticky;
  top: calc(var(--header-height) + 72px);
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.side-card {
  padding: 1.5rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.side-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--accent);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-dark);
}

.side-title a {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-light);
}

.side-title a:hover { color: var(--primary); }

.side-list li + li {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border);
}

.rank-item {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.rank-num {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  background: var(--light-bg);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.rank-item.is-top .rank-num {
  background: var(--primary);
  color: var(--white);
}

.rank-text {
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text-dark);
  transition: var(--transition-fast);
}

.rank-item:hover .rank-text { color: var(--primary); }

.rank-meta {
  margin-top: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-light);
}

.side-cta {
  padding: 1.75rem 1.5rem;
  background: linear-gradient(140deg, var(--primary-dark) 0%, var(--primary) 100%);
  border-radius: var(--radius);
  color: var(--white);
  text-align: center;
  box-shadow: var(--shadow);
}

.side-cta h3 {
  margin-bottom: 0.5rem;
  color: var(--white);
  font-size: 1.0625rem;
}

.side-cta p {
  margin-bottom: 1.125rem;
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.8125rem;
  line-height: 1.7;
}

.side-cta .side-cta-phone {
  display: block;
  margin-bottom: 0.875rem;
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.side-cta .btn {
  width: 100%;
  justify-content: center;
  background: var(--white);
  color: var(--primary-dark);
}

.side-cta .btn:hover { background: var(--accent); color: var(--white); }

/* Pagination / 分页 */
.pagination {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 2rem;
}

.page-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 0.75rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  transition: var(--transition);
}

.page-btn:hover:not(:disabled) {
  color: var(--primary);
  border-color: var(--primary);
}

.page-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
}

.page-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.news-empty {
  padding: 3rem 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* Article / 正文页 */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 3rem;
  align-items: start;
}

.article-main { min-width: 0; }

.article-head {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.article-title {
  margin: 0.75rem 0 1rem;
  font-size: clamp(1.5rem, 3.2vw, 2.125rem);
  font-weight: 800;
  line-height: 1.38;
}

.article-body {
  color: var(--text-dark);
  font-size: 1rem;
  line-height: 1.9;
}

.article-body p { margin-bottom: 1.25rem; }

.article-body h2 {
  margin: 2.25rem 0 1rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--accent);
  color: var(--primary-dark);
  font-size: 1.3125rem;
  font-weight: 800;
  line-height: 1.45;
}

.article-body h3 {
  margin: 1.5rem 0 0.75rem;
  font-size: 1.0625rem;
  font-weight: 700;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1.25rem 1.375rem;
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

.article-body li { margin-bottom: 0.5rem; }

.article-body strong { color: var(--primary-dark); }

.article-body table {
  width: 100%;
  margin: 1.5rem 0;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.article-body th,
.article-body td {
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--border);
  text-align: left;
}

.article-body th {
  background: var(--light-bg);
  color: var(--primary-dark);
  font-weight: 700;
}

.article-body td { color: var(--text-muted); }

.article-note {
  margin: 1.75rem 0;
  padding: 1.25rem 1.5rem;
  background: var(--light-bg);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius);
  font-size: 0.9375rem;
  line-height: 1.85;
}

.article-note p:last-child { margin-bottom: 0; }

.article-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.article-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
}

.article-nav-link {
  display: block;
  padding: 1rem 1.25rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.article-nav-link:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.article-nav-link span {
  display: block;
  margin-bottom: 0.25rem;
  color: var(--text-light);
  font-size: 0.75rem;
}

.article-nav-link strong {
  display: block;
  color: var(--text-dark);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.5;
}

.article-nav-link:hover strong { color: var(--primary); }

.article-nav-link.next { text-align: right; }

/* Related grid on article pages */
.related-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
  margin-top: 3rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

/* ---------- Responsive ---------- */
@media (min-width: 1025px) and (max-width: 1240px) {
  .nav-link {
    padding: 0.5rem 0.5625rem;
    font-size: 0.875rem;
  }

  .header-inner {
    gap: 1rem;
  }

  .header-phone {
    padding: 0.5rem 0.75rem;
  }
}

@media (max-width: 1200px) {
  .hero-content {
    gap: 3rem;
  }
}

@media (max-width: 1024px) {
  .nav-list {
    gap: 0;
  }

  .nav-link {
    padding: 0.5rem 0.625rem;
    font-size: 0.875rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-6 {
    grid-template-columns: repeat(3, 1fr);
  }

  .news-layout,
  .article-layout {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .news-side {
    position: static;
    top: auto;
  }

  .related-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  .news-featured {
    grid-template-columns: 1fr;
  }

  .news-featured-cover {
    min-height: 150px;
  }

  .news-featured-body {
    padding: 1.5rem;
  }

  .news-item {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 1rem;
    padding: 1.125rem;
  }

  .news-item-arrow,
  .news-tabs-spacer {
    display: none;
  }

  .article-nav,
  .related-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 3.5rem 0;
  }

  .container {
    padding: 0 1rem;
  }

  .main-nav,
  .header-phone span {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 6rem 0 4rem;
    text-align: center;
  }

  .hero-text {
    order: 1;
  }

  .hero-image {
    order: 0;
  }

  .hero-image-placeholder {
    max-width: 320px;
  }

  .hero-stats {
    justify-content: center;
  }

  .hero-cta {
    justify-content: center;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .grid-6 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 3rem 0 2rem;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-badges {
    gap: 0.625rem;
    justify-content: flex-start;
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: 0.375rem;
  }

  .page-hero {
    padding: 6rem 0 3rem;
  }

  .consult-form {
    padding: 1.5rem;
  }

  .cta-phone {
    font-size: 2rem;
  }

  .cta-phone svg {
    width: 28px;
    height: 28px;
  }
}

@media (max-width: 480px) {
  .hero-badge {
    font-size: 0.75rem;
    padding: 0.375rem 1rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 0.5rem;
  }

  .hero-cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ---------- Utility Classes ---------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hidden {
  display: none !important;
}

.visible-mobile {
  display: none;
}

@media (max-width: 768px) {
  .hidden-mobile {
    display: none !important;
  }

  .visible-mobile {
    display: block !important;
  }
}