/* ============================================
   DIAACE 卓钻精密 - Official Website Styles
   Color Palette: Red #C8202A, Black #1A1A1A, Gray #F5F5F5
   ============================================ */

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

:root {
  --red: #C8202A;
  --red-dark: #A01820;
  --red-light: #E8383E;
  --black: #1A1A1A;
  --gray-dark: #333333;
  --gray: #666666;
  --gray-light: #999999;
  --bg-light: #F5F5F5;
  --bg-white: #FFFFFF;
  --gold: #D4A853;
  --font-cn: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-en: "Helvetica Neue", Arial, sans-serif;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: var(--font-cn);
  color: var(--black);
  background: var(--bg-white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

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

/* === Typography === */
.section-label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray-light);
  margin-bottom: 8px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-title .red { color: var(--red); }

.section-subtitle {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 680px;
  line-height: 1.8;
}

.en-subtitle {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--gray-light);
  letter-spacing: 1px;
  margin-top: 4px;
}

/* === Diamond Badge === */
.diamond {
  width: 32px;
  height: 32px;
  background: var(--red);
  transform: rotate(45deg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.diamond span {
  transform: rotate(-45deg);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 36px;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 1px;
}
.btn-primary {
  background: var(--red);
  color: #fff;
}
.btn-primary:hover {
  background: var(--red-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(200,32,42,0.35);
}
.btn-outline {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255,255,255,0.6);
}
.btn-outline:hover {
  border-color: #fff;
  background: rgba(255,255,255,0.1);
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}
.navbar.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.08);
  padding: 10px 0;
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.nav-logo svg { width: 40px; height: 40px; }
.nav-logo-text {
  display: flex;
  flex-direction: column;
}
.nav-logo-text .brand {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
  transition: var(--transition);
}
.nav-logo-text .brand-cn {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.8);
  letter-spacing: 1px;
  transition: var(--transition);
}
.navbar.scrolled .nav-logo-text .brand { color: var(--black); }
.navbar.scrolled .nav-logo-text .brand-cn { color: var(--gray); }

.nav-links {
  display: flex;
  gap: 32px;
  align-items: center;
}
.nav-links a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--red);
  transition: var(--transition);
}
.nav-links a:hover::after { width: 100%; }
.navbar.scrolled .nav-links a { color: var(--gray-dark); }
.navbar.scrolled .nav-links a:hover { color: var(--red); }

.nav-contact-btn {
  padding: 8px 24px;
  background: var(--red);
  color: #fff !important;
  border-radius: 2px;
  font-size: 0.85rem;
}
.nav-contact-btn:hover { background: var(--red-dark); }
.nav-contact-btn::after { display: none !important; }

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  z-index: 1001;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #fff;
  transition: var(--transition);
}
.navbar.scrolled .nav-toggle span { background: var(--black); }

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--black);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 100%);
  opacity: 0.95;
}
.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 80%, rgba(200,32,42,0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, rgba(200,32,42,0.1) 0%, transparent 50%);
}
/* Geometric grid pattern */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}
/* Animated diamond particles */
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero-particles .particle {
  position: absolute;
  width: 12px;
  height: 12px;
  border: 1px solid rgba(200,32,42,0.3);
  transform: rotate(45deg);
  animation: float 8s ease-in-out infinite;
}
.hero-particles .particle:nth-child(1) { top: 15%; left: 10%; animation-delay: 0s; }
.hero-particles .particle:nth-child(2) { top: 30%; right: 15%; animation-delay: 2s; width: 8px; height: 8px; }
.hero-particles .particle:nth-child(3) { bottom: 25%; left: 20%; animation-delay: 4s; width: 16px; height: 16px; }
.hero-particles .particle:nth-child(4) { top: 60%; right: 25%; animation-delay: 1s; }
.hero-particles .particle:nth-child(5) { bottom: 40%; right: 10%; animation-delay: 3s; width: 10px; height: 10px; }
.hero-particles .particle:nth-child(6) { top: 20%; left: 40%; animation-delay: 5s; width: 6px; height: 6px; }

@keyframes float {
  0%, 100% { transform: rotate(45deg) translateY(0); opacity: 0.4; }
  50% { transform: rotate(45deg) translateY(-20px); opacity: 0.8; }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
}
.hero-logo-wrapper {
  margin-bottom: 40px;
  display: flex;
  justify-content: center;
}
.hero-logo-wrapper svg { width: 100px; height: 100px; }
.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 6px;
  margin-bottom: 8px;
}
.hero-title-cn {
  font-size: 1.8rem;
  font-weight: 300;
  color: rgba(255,255,255,0.85);
  letter-spacing: 8px;
  margin-bottom: 24px;
}
.hero-tagline {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 3px;
  margin-bottom: 48px;
}
.hero-tags {
  display: flex;
  gap: 16px;
  justify-content: center;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-tag {
  padding: 8px 20px;
  border: 1px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  letter-spacing: 2px;
}
.hero-tag.accent {
  border-color: var(--red);
  background: rgba(200,32,42,0.15);
  color: #fff;
}
.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.4);
  font-size: 0.7rem;
  letter-spacing: 2px;
  animation: scrollBounce 2s ease-in-out infinite;
}
.hero-scroll .line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.4), transparent);
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   ABOUT / CORPORATE CULTURE
   ============================================ */
.about {
  padding: 120px 0;
  background: var(--bg-white);
}
.about-header {
  margin-bottom: 60px;
}
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}
.about-text h3 {
  font-size: 1.6rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.about-text h3 .diamond-icon {
  color: var(--red);
  font-size: 0.8rem;
}
.about-text p {
  color: var(--gray);
  line-height: 2;
  margin-bottom: 16px;
}
.about-text .en-text {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--gray-light);
  line-height: 1.8;
}
.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 40px;
}
.stat-card {
  background: var(--bg-light);
  padding: 28px 24px;
  border-left: 3px solid var(--red);
  transition: var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}
.stat-card .number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--red);
  font-family: var(--font-en);
  line-height: 1;
}
.stat-card .number sup {
  font-size: 1rem;
  font-weight: 600;
}
.stat-card .label {
  font-size: 0.85rem;
  color: var(--gray);
  margin-top: 8px;
}
.about-image {
  position: relative;
}
.about-image img {
  width: 100%;
  border-radius: 2px;
}
.about-image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
  background: linear-gradient(to top, rgba(200,32,42,0.9), transparent);
  color: #fff;
}
.about-image-overlay .mission {
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 2px;
}

/* ============================================
   MISSION, VISION, VALUES
   ============================================ */
.mvv {
  padding: 80px 0;
  background: var(--bg-light);
}
.mvv-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.mvv-card {
  background: var(--bg-white);
  padding: 48px 36px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}
.mvv-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--red);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}
.mvv-card:hover::before { transform: scaleX(1); }
.mvv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.mvv-card .icon {
  width: 56px;
  height: 56px;
  background: rgba(200,32,42,0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}
.mvv-card .icon svg { width: 28px; height: 28px; fill: var(--red); }
.mvv-card h3 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}
.mvv-card .en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  color: var(--gray-light);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.mvv-card p {
  color: var(--gray);
  line-height: 1.8;
}

/* ============================================
   HISTORY / TIMELINE
   ============================================ */
.history {
  padding: 120px 0;
  background: var(--bg-white);
  position: relative;
  overflow: hidden;
}
.history::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 100%;
  background: linear-gradient(135deg, rgba(200,32,42,0.03), rgba(200,32,42,0.08));
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0% 100%);
}
.history-header { margin-bottom: 80px; }
.timeline {
  position: relative;
  padding-left: 60px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--red), rgba(200,32,42,0.2));
}
.timeline-item {
  position: relative;
  margin-bottom: 60px;
  padding-left: 40px;
}
.timeline-item:last-child { margin-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -42px;
  top: 4px;
  width: 16px;
  height: 16px;
  background: var(--red);
  transform: rotate(45deg);
}
.timeline-dot::after {
  content: '';
  position: absolute;
  inset: 3px;
  background: #fff;
}
.timeline-year {
  font-family: var(--font-en);
  font-size: 2rem;
  font-weight: 800;
  color: var(--red);
  margin-bottom: 8px;
}
.timeline-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.timeline-desc {
  color: var(--gray);
  line-height: 1.8;
  max-width: 600px;
}

/* ============================================
   CORE ADVANTAGES
   ============================================ */
.advantages {
  padding: 120px 0;
  background: var(--bg-light);
}
.advantages-header { margin-bottom: 60px; }
.advantage-list {
  display: grid;
  gap: 0;
}
.advantage-item {
  display: grid;
  grid-template-columns: 80px 1fr 80px;
  gap: 32px;
  align-items: start;
  padding: 40px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  transition: var(--transition);
}
.advantage-item:hover {
  padding-left: 16px;
  background: rgba(255,255,255,0.6);
}
.advantage-icon {
  width: 64px;
  height: 64px;
  background: var(--red);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.advantage-item:hover .advantage-icon {
  transform: scale(1.1);
  box-shadow: 0 4px 16px rgba(200,32,42,0.3);
}
.advantage-icon svg { width: 32px; height: 32px; fill: #fff; }
.advantage-content h3 {
  font-size: 1.25rem;
  margin-bottom: 12px;
}
.advantage-content p {
  color: var(--gray);
  line-height: 1.8;
}
.advantage-num {
  font-family: var(--font-en);
  font-size: 3rem;
  font-weight: 800;
  color: rgba(0,0,0,0.06);
  text-align: right;
  line-height: 1;
}

/* ============================================
   PRODUCTS
   ============================================ */
.products {
  padding: 120px 0;
  background: var(--bg-white);
}
.products-header { margin-bottom: 60px; }
.product-categories {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-bottom: 80px;
}
.product-cat {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/5;
  background: var(--bg-light);
}
.product-cat img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.product-cat:hover img { transform: scale(1.05); }
.product-cat-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.2) 50%, transparent 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px;
  transition: var(--transition);
}
.product-cat:hover .product-cat-overlay {
  background: linear-gradient(to top, rgba(200,32,42,0.9) 0%, rgba(200,32,42,0.3) 50%, transparent 100%);
}
.product-cat-overlay h3 {
  color: #fff;
  font-size: 1.3rem;
  margin-bottom: 4px;
}
.product-cat-overlay .en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.product-cat-overlay p {
  color: rgba(255,255,255,0.8);
  font-size: 0.85rem;
  line-height: 1.6;
}

/* Product detail cards */
.product-detail-section { margin-top: 40px; }
.product-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
  padding: 48px;
  background: var(--bg-light);
}
.product-detail:nth-child(even) { direction: rtl; }
.product-detail:nth-child(even) > * { direction: ltr; }
.product-detail-img {
  overflow: hidden;
}
.product-detail-img img {
  width: 100%;
  transition: transform 0.6s ease;
}
.product-detail:hover .product-detail-img img { transform: scale(1.03); }
.product-detail-info h3 {
  font-size: 1.5rem;
  color: var(--red);
  margin-bottom: 4px;
}
.product-detail-info .en-name {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: var(--gray-light);
  margin-bottom: 20px;
}
.product-detail-info p {
  color: var(--gray);
  line-height: 1.9;
  margin-bottom: 16px;
}
.product-features {
  margin-top: 20px;
}
.product-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 8px 0;
  color: var(--gray-dark);
  font-size: 0.9rem;
}
.product-features li::before {
  content: '◆';
  color: var(--red);
  font-size: 0.6rem;
  margin-top: 6px;
  flex-shrink: 0;
}

/* ============================================
   APPLICATION INDUSTRIES
   ============================================ */
.applications {
  padding: 120px 0;
  background: var(--black);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.applications::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(200,32,42,0.12) 0%, transparent 60%);
}
.applications-header {
  position: relative;
  z-index: 1;
  margin-bottom: 60px;
}
.applications-header .section-title { color: #fff; }
.applications-header .section-subtitle { color: rgba(255,255,255,0.6); }
.app-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}
.app-card {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 36px 24px;
  text-align: center;
  transition: var(--transition);
}
.app-card:hover {
  background: rgba(200,32,42,0.15);
  border-color: rgba(200,32,42,0.4);
  transform: translateY(-6px);
}
.app-card .app-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.app-card .app-icon svg { width: 40px; height: 40px; fill: var(--red); }
.app-card h4 {
  font-size: 1rem;
  margin-bottom: 8px;
}
.app-card p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.6;
}

/* ============================================
   PARTNERS
   ============================================ */
.partners {
  padding: 120px 0;
  background: var(--bg-white);
}
.partners-header { margin-bottom: 60px; }
.partner-group {
  margin-bottom: 48px;
}
.partner-group h3 {
  font-size: 1.1rem;
  color: var(--red);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.partner-group h3::before {
  content: '◆';
  font-size: 0.6rem;
}
.partner-group .desc {
  color: var(--gray);
  font-size: 0.9rem;
  margin-bottom: 20px;
  line-height: 1.7;
}
.partner-logos {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.partner-logo {
  padding: 16px 28px;
  background: var(--bg-light);
  border: 1px solid rgba(0,0,0,0.06);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--gray-dark);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 8px;
}
.partner-logo:hover {
  border-color: var(--red);
  color: var(--red);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* ============================================
   HONORS
   ============================================ */
.honors-section {
  padding: 100px 0;
  background: var(--bg-light);
}
.honors-header { margin-bottom: 60px; }
.honors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.honor-card {
  background: var(--bg-white);
  padding: 48px 32px;
  text-align: center;
  border-bottom: 3px solid transparent;
  transition: var(--transition);
}
.honor-card:hover {
  border-bottom-color: var(--red);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.honor-card .honor-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: rgba(200,32,42,0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.honor-card .honor-icon svg { width: 36px; height: 36px; fill: var(--red); }
.honor-card h4 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}
.honor-card p {
  color: var(--gray);
  font-size: 0.85rem;
  line-height: 1.7;
}

/* ============================================
   CONTACT / FOOTER
   ============================================ */
.contact {
  padding: 100px 0;
  background: var(--red);
  color: #fff;
  position: relative;
}
.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(255,255,255,0.08) 0%, transparent 50%);
}
.contact .container { position: relative; z-index: 1; }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.contact-info h2 {
  font-size: 2.2rem;
  margin-bottom: 8px;
}
.contact-info .en-title {
  font-family: var(--font-en);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 32px;
}
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 24px;
}
.contact-item .ci-icon {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-item .ci-icon svg { width: 20px; height: 20px; fill: #fff; }
.contact-item .ci-label {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.contact-item .ci-value {
  font-size: 1rem;
  line-height: 1.6;
}
.contact-cta {
  text-align: center;
}
.contact-cta .tagline {
  font-size: 1.6rem;
  font-weight: 300;
  letter-spacing: 4px;
  margin-bottom: 12px;
}
.contact-cta .tagline-cn {
  font-size: 1rem;
  color: rgba(255,255,255,0.7);
  letter-spacing: 6px;
  margin-bottom: 40px;
}
.contact-cta .btn {
  background: #fff;
  color: var(--red);
}
.contact-cta .btn:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

/* Footer */
.footer {
  background: var(--black);
  color: rgba(255,255,255,0.5);
  padding: 32px 0;
  text-align: center;
  font-size: 0.8rem;
}
.footer a { color: rgba(255,255,255,0.7); }
.footer a:hover { color: var(--red); }

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}
.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .mvv-grid { grid-template-columns: 1fr; }
  .product-categories { grid-template-columns: 1fr 1fr; }
  .product-detail { grid-template-columns: 1fr; gap: 32px; padding: 32px; }
  .product-detail:nth-child(even) { direction: ltr; }
  .app-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
  .honors-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  html { font-size: 14px; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(26,26,26,0.98);
    justify-content: center;
    align-items: center;
    gap: 24px;
    z-index: 999;
  }
  .nav-links.active a {
    color: #fff;
    font-size: 1.2rem;
  }
  .hero-title { font-size: 2.2rem; letter-spacing: 3px; }
  .hero-title-cn { font-size: 1.2rem; letter-spacing: 4px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .section-title { font-size: 1.8rem; }
  .product-categories { grid-template-columns: 1fr; }
  .app-grid { grid-template-columns: 1fr; }
  .advantage-item { grid-template-columns: 56px 1fr; }
  .advantage-num { display: none; }
  .partner-logos { gap: 12px; }
  .partner-logo { padding: 12px 16px; font-size: 0.8rem; }
  .contact-info h2 { font-size: 1.6rem; }
}