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

:root {
  --brand-dark: #1a4a6e;
  --brand-darker: #0f2d44;
  --brand-gold: #d4a017;
  --brand-gold-light: #e8c547;
  --accent-blue: #2196F3;
  --text-primary: #333;
  --text-secondary: #757575;
  --text-light: #b0b0b0;
  --bg-white: #fff;
  --bg-gray: #f5f5f5;
  --bg-dark: #1a1a1a;
  --shadow-sm: 0 2px 8px rgba(0,0,0,.06);
  --shadow-md: 0 4px 20px rgba(0,0,0,.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,.12);
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --header-h: 64px;
  --container: 1226px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text-primary);
  background: var(--bg-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

/* ===== Header (mi.com style sticky nav) ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: rgba(255,255,255,.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0,0,0,.06);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.logo-cn {
  font-size: 22px;
  font-weight: 700;
  color: var(--brand-dark);
}

.logo-en {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 3px;
  color: var(--brand-gold);
}

.main-nav {
  display: flex;
  gap: 32px;
}

.main-nav a {
  font-size: 14px;
  color: var(--text-primary);
  transition: color var(--transition);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--brand-gold);
  transition: all var(--transition);
  transform: translateX(-50%);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--brand-dark);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, var(--brand-dark) 0%, var(--brand-darker) 100%);
  overflow: hidden;
  padding: calc(var(--header-h) + 40px) 0 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.hero-circle {
  position: absolute;
  border-radius: 50%;
  background: rgba(74, 144, 226, .12);
}

.hero-circle-1 {
  width: 600px;
  height: 600px;
  right: -80px;
  top: 5%;
}

.hero-circle-2 {
  width: 400px;
  height: 400px;
  right: 20%;
  bottom: 0;
  background: rgba(74, 144, 226, .08);
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-content {
  color: #fff;
  text-align: left;
}

.hero-brand {
  font-size: 64px;
  font-weight: 700;
  letter-spacing: 6px;
  line-height: 1.1;
}

.hero-brand-en {
  font-size: 14px;
  letter-spacing: 10px;
  color: var(--brand-gold);
  margin: 12px 0 36px;
  font-weight: 500;
}

.hero-slogan {
  font-size: 32px;
  font-weight: 300;
  line-height: 1.5;
  margin-bottom: 16px;
}

.hero-line {
  width: 48px;
  height: 3px;
  background: var(--brand-gold);
  margin-bottom: 24px;
}

.hero-desc {
  font-size: 17px;
  opacity: .85;
  margin-bottom: 8px;
}

.hero-company {
  font-size: 14px;
  opacity: .55;
  margin-bottom: 36px;
}

.hero-cta {
  display: inline-block;
  padding: 12px 36px;
  background: var(--brand-gold);
  color: #fff;
  font-size: 15px;
  font-weight: 500;
  border-radius: 4px;
  transition: all var(--transition);
}

.hero-cta:hover {
  background: var(--brand-gold-light);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(212,160,23,.4);
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
  align-items: flex-end;
  padding-right: 20px;
}

.hero-stat-card {
  display: flex;
  align-items: center;
  gap: 20px;
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 12px;
  padding: 24px 32px;
  min-width: 260px;
  transition: all var(--transition);
}

.hero-stat-card:nth-child(2) {
  margin-right: 40px;
}

.hero-stat-card:nth-child(3) {
  margin-right: 80px;
}

.hero-stat-card:hover {
  background: rgba(255,255,255,.14);
  transform: translateX(-8px);
}

.hero-stat-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(212,160,23,.15);
  border-radius: 10px;
  color: var(--brand-gold);
}

.hero-stat-icon svg {
  width: 28px;
  height: 28px;
}

.hero-stat-label {
  font-size: 16px;
  font-weight: 500;
  color: rgba(255,255,255,.9);
  line-height: 1.4;
}

/* ===== Section Nav Cards ===== */
.section-nav {
  padding: 80px 0;
  background: var(--bg-gray);
}

.nav-cards {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.nav-card {
  background: var(--bg-white);
  border-radius: 8px;
  padding: 32px 20px;
  text-align: center;
  border-top: 4px solid var(--brand-gold);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  cursor: pointer;
}

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

.nav-card-num {
  display: block;
  font-size: 32px;
  font-weight: 700;
  color: var(--brand-dark);
  margin-bottom: 16px;
}

.nav-card-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 16px;
  color: var(--brand-gold);
}

.nav-card-icon svg { width: 100%; height: 100%; }

.nav-card h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 4px;
}

.nav-card p {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ===== Section Common ===== */
.section {
  padding-bottom: 80px;
}

.section-header {
  background: var(--brand-dark);
  color: #fff;
  padding: 48px 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: 100%;
}

.section-num {
  font-size: 56px;
  font-weight: 700;
  color: var(--brand-gold);
  line-height: 1;
  flex-shrink: 0;
}

.section-title {
  font-size: 32px;
  font-weight: 600;
}

.section-subtitle {
  font-size: 14px;
  opacity: .7;
  margin-top: 4px;
  letter-spacing: 1px;
}

/* ===== About ===== */
.section-about .container { padding-top: 60px; }

.about-intro {
  display: flex;
  gap: 32px;
  align-items: stretch;
  margin-bottom: 60px;
  background: var(--bg-gray);
  border-radius: 12px;
  padding: 48px 40px;
  overflow: hidden;
}

.about-bar {
  width: 5px;
  background: var(--brand-gold);
  border-radius: 3px;
  flex-shrink: 0;
}

.about-body {
  flex: 1;
}

.about-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--brand-gold);
  background: rgba(212,160,23,.1);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.about-body h3 {
  font-size: 28px;
  color: var(--brand-dark);
  margin-bottom: 16px;
  line-height: 1.3;
}

.about-body p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.8;
  max-width: 720px;
}

.about-highlight {
  color: var(--brand-dark) !important;
  font-weight: 600;
  font-size: 17px !important;
  margin-bottom: 32px !important;
}

.about-highlights {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.about-highlight-item {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-white);
  padding: 14px 20px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.about-highlight-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.about-highlight-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(26,74,110,.08);
  border-radius: 8px;
  color: var(--brand-dark);
  flex-shrink: 0;
}

.about-highlight-icon svg {
  width: 22px;
  height: 22px;
}

.about-highlight-item span {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
}

.feature-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.feature-card {
  background: var(--bg-white);
  border-radius: 8px;
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--brand-gold);
  transition: all var(--transition);
}

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

.feature-icon {
  width: 40px;
  height: 40px;
  color: var(--accent-blue);
  margin-bottom: 16px;
}

.feature-icon svg { width: 100%; height: 100%; }

.feature-card h4 {
  font-size: 18px;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
}

.partnership-bar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  background: var(--brand-dark);
  border-radius: 8px;
  overflow: hidden;
}

.partnership-item {
  padding: 40px 32px;
  color: #fff;
}

.partnership-item:first-child {
  border-right: 1px solid rgba(255,255,255,.15);
}

.partnership-item h4 {
  font-size: 16px;
  margin-bottom: 12px;
  color: var(--brand-gold);
}

.partnership-item p {
  font-size: 14px;
  opacity: .8;
  line-height: 1.7;
}

/* ===== Vision ===== */
.section-vision {
  background: linear-gradient(135deg, var(--brand-dark) 0%, #1e5a82 100%);
  color: #fff;
  padding-bottom: 0;
}

.section-vision .section-header {
  background: transparent;
}

.section-vision .container {
  padding: 60px 24px 0;
}

.vision-content {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  margin-bottom: 48px;
}

.vision-bar {
  width: 6px;
  min-height: 120px;
  background: var(--brand-gold);
  border-radius: 3px;
  flex-shrink: 0;
}

.vision-text h3 {
  font-size: 32px;
  font-weight: 600;
  margin-bottom: 20px;
  line-height: 1.4;
}

.vision-text p {
  font-size: 16px;
  opacity: .85;
  line-height: 1.8;
  max-width: 700px;
}

.vision-footer {
  text-align: center;
  padding: 20px;
  background: rgba(0,0,0,.2);
  color: var(--brand-gold);
  font-size: 15px;
  letter-spacing: 2px;
}

/* ===== Products ===== */
.section-products .container { padding-top: 60px; }

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg-white);
  border-radius: 8px;
  padding: 32px 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.product-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.product-card-header svg {
  width: 32px;
  height: 32px;
}

.product-card[data-color="blue"] .product-card-header svg { color: #2196F3; }
.product-card[data-color="teal"] .product-card-header svg { color: #009688; }
.product-card[data-color="purple"] .product-card-header svg { color: #7B1FA2; }
.product-card[data-color="orange"] .product-card-header svg { color: #FF9800; }

.product-card-header h4 {
  font-size: 20px;
}

.product-tag {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.product-card[data-color="blue"] .product-tag { color: #2196F3; }
.product-card[data-color="teal"] .product-tag { color: #009688; }
.product-card[data-color="purple"] .product-tag { color: #7B1FA2; }
.product-card[data-color="orange"] .product-tag { color: #FF9800; }

.product-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== Solutions ===== */
.section-solutions {
  background: var(--bg-gray);
  padding-top: 80px;
}

.solution-block {
  margin-bottom: 80px;
}

.solution-header {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
  padding: 32px;
  background: var(--brand-dark);
  border-radius: 8px;
  color: #fff;
}

.solution-num {
  font-size: 40px;
  font-weight: 700;
  color: var(--brand-gold);
  flex-shrink: 0;
}

.solution-header h3 {
  font-size: 24px;
  font-weight: 600;
}

.solution-header p {
  font-size: 13px;
  opacity: .7;
  letter-spacing: 1px;
}

.solution-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.solution-card {
  background: var(--bg-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.solution-card-top {
  height: 4px;
}

.solution-card-body {
  padding: 32px;
}

.solution-card-body > svg {
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
}

.solution-card-body h4 {
  font-size: 20px;
  color: var(--brand-dark);
  margin-bottom: 8px;
}

.solution-label {
  display: inline-block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.solution-card-body > p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.solution-advantage {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 16px;
  background: var(--bg-gray);
  border-radius: 6px;
  line-height: 1.7;
}

.solution-advantage strong {
  color: var(--brand-dark);
}

.solution-card-accent {
  display: flex;
  overflow: hidden;
}

.accent-bar {
  width: 6px;
  flex-shrink: 0;
}

/* Workflow */
.workflow {
  background: var(--bg-white);
  border-radius: 8px;
  padding: 40px 32px;
  box-shadow: var(--shadow-sm);
}

.workflow h4 {
  font-size: 20px;
  color: var(--brand-dark);
  text-align: center;
  margin-bottom: 32px;
}

.workflow-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}

.workflow-step {
  flex: 1;
  text-align: center;
  padding: 24px 16px;
  background: var(--bg-gray);
  border-radius: 8px;
  transition: all var(--transition);
}

.workflow-step:hover {
  background: #e8f0fe;
  transform: translateY(-2px);
}

.step-num {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--accent-blue);
  margin-bottom: 8px;
}

.workflow-step h5 {
  font-size: 15px;
  margin-bottom: 4px;
}

.workflow-step p {
  font-size: 12px;
  color: var(--text-secondary);
}

.workflow-arrow {
  font-size: 24px;
  color: var(--accent-blue);
  flex-shrink: 0;
}

/* Solution Grid 4 */
.solution-grid-4 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.solution-feature-card {
  background: var(--bg-white);
  border-radius: 8px;
  padding: 32px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
}

.solution-feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
}

.solution-feature-card svg {
  width: 36px;
  height: 36px;
  margin-bottom: 16px;
}

.solution-feature-card h4 {
  font-size: 17px;
  color: var(--brand-dark);
  margin-bottom: 12px;
}

.solution-feature-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.solution-sub-block {
  margin-bottom: 40px;
}

.sub-block-title {
  font-size: 20px;
  color: var(--brand-dark);
  margin-bottom: 24px;
  text-align: center;
}

/* Industry Showcase */
.industry-showcase {
  background: var(--bg-white);
  border-radius: 8px;
  padding: 40px 32px;
  box-shadow: var(--shadow-sm);
}

.industry-showcase h4 {
  font-size: 18px;
  color: var(--brand-dark);
  text-align: center;
  margin-bottom: 32px;
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.industry-card {
  background: var(--bg-gray);
  border-radius: 8px;
  padding: 20px;
  text-align: center;
  transition: all var(--transition);
  cursor: default;
}

.industry-card:hover {
  background: #e3f2fd;
  transform: translateY(-2px);
}

.industry-card h5 {
  font-size: 16px;
  color: var(--brand-dark);
  margin-bottom: 8px;
}

.industry-card p {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ===== Partners ===== */
.section-partners .container { padding-top: 60px; }

.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.partner-card {
  background: var(--bg-white);
  border-radius: 8px;
  padding: 36px 28px;
  text-align: center;
  border-top: 4px solid var(--brand-gold);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

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

.partner-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  color: var(--accent-blue);
}

.partner-icon svg { width: 100%; height: 100%; }

.partner-card h4 {
  font-size: 16px;
  margin-bottom: 8px;
  line-height: 1.4;
}

.partner-card p {
  font-size: 13px;
  color: var(--text-secondary);
}

.partner-grid .partner-card:nth-child(4),
.partner-grid .partner-card:nth-child(5) {
  grid-column: span 1;
}

/* Center last two in a 3-col grid */
.partner-grid {
  justify-items: stretch;
}

/* ===== Cooperation ===== */
.section-cooperation {
  background: linear-gradient(135deg, var(--brand-dark) 0%, var(--brand-darker) 100%);
  color: #fff;
  padding-bottom: 80px;
}

.section-cooperation .section-header {
  background: transparent;
}

.section-cooperation .container {
  padding-top: 40px;
}

.cooperation-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.cooperation-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cooperation-item {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 18px;
}

.coop-bullet {
  width: 12px;
  height: 12px;
  background: var(--brand-gold);
  border-radius: 50%;
  flex-shrink: 0;
}

.cooperation-contact {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
}

.contact-card {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 16px;
  box-shadow: var(--shadow-lg);
  width: 280px;
  overflow: hidden;
}

.wechat-qr {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 6px;
}

.contact-cta {
  text-align: center;
}

.contact-cta h3 {
  font-size: 28px;
  margin-bottom: 8px;
}

.contact-cta p {
  font-size: 16px;
  opacity: .8;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--bg-dark);
  color: #fff;
  padding: 60px 0 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.footer-brand .logo-cn {
  font-size: 24px;
  color: #fff;
}

.footer-brand .logo-en {
  display: block;
  margin: 4px 0 12px;
}

.footer-brand p {
  font-size: 14px;
  opacity: .6;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col h5 {
  font-size: 14px;
  margin-bottom: 16px;
  color: var(--brand-gold);
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,.6);
  margin-bottom: 10px;
  transition: color var(--transition);
}

.footer-col a:hover { color: #fff; }

.footer-bottom {
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 12px;
  opacity: .4;
  margin-bottom: 4px;
}

/* ===== Animations ===== */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity .6s ease, transform .6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .nav-cards { grid-template-columns: repeat(3, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .industry-grid { grid-template-columns: repeat(2, 1fr); }
  .workflow-steps { flex-wrap: wrap; }
  .workflow-arrow { display: none; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
    box-shadow: var(--shadow-md);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
  }

  .main-nav.open {
    transform: translateY(0);
    opacity: 1;
  }

  .nav-toggle { display: flex; }

  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-visual { align-items: flex-start; padding-right: 0; }
  .hero-stat-card { min-width: unset; width: 100%; }
  .hero-stat-card:nth-child(2),
  .hero-stat-card:nth-child(3) { margin-right: 0; }
  .hero-brand { font-size: 44px; letter-spacing: 4px; }
  .hero-slogan { font-size: 24px; }

  .nav-cards { grid-template-columns: repeat(2, 1fr); }
  .about-intro { flex-direction: column; padding: 32px 24px; }
  .about-bar { width: 100%; height: 4px; }
  .about-highlights { flex-direction: column; }
  .about-highlight-item { width: 100%; }
  .feature-cards { grid-template-columns: 1fr; }
  .partnership-bar { grid-template-columns: 1fr; }
  .partnership-item:first-child { border-right: none; border-bottom: 1px solid rgba(255,255,255,.15); }
  .product-grid { grid-template-columns: 1fr; }
  .solution-cards { grid-template-columns: 1fr; }
  .solution-grid-4 { grid-template-columns: 1fr; }
  .cooperation-content { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr; }
  .section-num { font-size: 40px; }
  .section-title { font-size: 24px; }
}

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