@font-face {
  font-family: 'Playfair Display';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('fonts/playfair-latin.woff2') format('woff2');
}
/* ===================================================
   宇格流体控制设备 - 企业官网样式
   完全参照 www.uniwo.uk 布局风格
   =================================================== */

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

:root {
  --dark-blue: #0d1b2e;
  --mid-blue: #1a2d4a;
  --light-blue: #2a4a7a;
  --gold: #c8a96e;
  --gold-light: #dfc08a;
  --white: #ffffff;
  --off-white: #f8f7f4;
  --gray: #888;
  --text: #333;
  --font-en: 'Playfair Display', Georgia, serif;
  --font-cn: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-cn);
  color: var(--text);
  background: #fff;
  overflow-x: hidden;
}

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ===== 顶部信息条 ===== */
.top-bar {
  background: var(--dark-blue);
  color: rgba(255,255,255,0.7);
  font-size: 12px;
  text-align: center;
  padding: 8px 0;
  letter-spacing: 0.5px;
}

/* ===== 导航栏 ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: background 0.3s, box-shadow 0.3s;
  padding: 0;
}

.header.scrolled {
  background: var(--dark-blue);
  box-shadow: 0 2px 20px rgba(0,0,0,0.3);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}

.logo {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
}

.logo-icon {
  height: 56px;
  width: auto;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}
.logo-icon img {
  height: 100%;
  width: auto;
  object-fit: contain;
  display: block;
}

.logo-text {
  display: block;
}

.logo-main {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 3px;
  line-height: 1;
}

.logo-sub {
  font-size: 13.5px;
  font-weight: 500;
  color: rgba(255,255,255,0.92);
  letter-spacing: 1px;
  white-space: nowrap;
  line-height: 1.1;
}

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-link {
  font-size: 13px;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  letter-spacing: 1px;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.nav-link:hover,
.nav-link.active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.btn-header {
  background: var(--gold);
  color: var(--dark-blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1.5px;
  padding: 10px 22px;
  text-transform: uppercase;
  transition: background 0.2s, transform 0.2s;
}

.btn-header:hover {
  background: var(--gold-light);
  transform: translateY(-1px);
}

/* 顶部电话 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 22px;
}

.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.5px;
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
  transition: color 0.2s;
}

.header-phone svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  color: var(--gold);
}

.header-phone:hover {
  color: var(--gold-light);
}

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

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  transition: all 0.3s;
}

/* ===== 通用按钮 ===== */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  transition: all 0.3s;
  cursor: pointer;
  border: none;
}

.btn-gold {
  background: var(--gold);
  color: var(--dark-blue);
}

.btn-gold:hover {
  background: var(--gold-light);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255,255,255,0.6);
}

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.btn-dark {
  background: var(--dark-blue);
  color: white;
}

.btn-dark:hover {
  background: var(--mid-blue);
  transform: translateY(-2px);
}

.btn-white {
  background: white;
  color: var(--dark-blue);
}

.btn-white:hover {
  background: var(--off-white);
  transform: translateY(-2px);
}

/* ===== 通用Section ===== */
.section { padding: 100px 0; }

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header.light .section-tag,
.section-header.light .section-title,
.section-header.light .section-desc {
  color: white;
}

.section-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 14px;
}

.section-title {
  font-family: var(--font-en);
  font-size: 42px;
  font-weight: 700;
  color: var(--dark-blue);
  line-height: 1.2;
  margin-bottom: 18px;
}

.section-desc {
  font-size: 16px;
  color: #666;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.8;
}

/* ===== HERO 区域 ===== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(10,22,42,0.88) 0%,
    rgba(13,27,46,0.72) 50%,
    rgba(26,45,74,0.55) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 0 40px;
  max-width: 1280px;
  margin: 0 auto;
  width: 100%;
}

.hero-tag {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-en);
  font-size: clamp(42px, 5.5vw, 72px);
  font-weight: 700;
  color: white;
  line-height: 1.1;
  margin-bottom: 24px;
  max-width: 860px;
}

.hero-desc {
  font-size: 17px;
  color: rgba(255,255,255,0.8);
  line-height: 1.8;
  max-width: 560px;
  margin-bottom: 40px;
}

.hero-btns {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Hero 热线 */
.hero-phone {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-top: 34px;
  padding: 13px 28px 13px 14px;
  border: 1px solid rgba(200,169,110,0.45);
  background: rgba(13,27,46,0.55);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  transition: border-color 0.2s, background 0.2s, transform 0.2s;
}

.hero-phone:hover {
  border-color: var(--gold);
  background: rgba(13,27,46,0.75);
  transform: translateY(-2px);
}

.hero-phone-icon {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--dark-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.hero-phone-icon svg {
  width: 22px;
  height: 22px;
}

.hero-phone-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.hero-phone-label {
  font-size: 11px;
  letter-spacing: 3px;
  color: rgba(255,255,255,0.7);
}

.hero-phone-num {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
  line-height: 1.2;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.5);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
  animation: scrollDrop 1.5s ease-in-out infinite;
}

@keyframes scrollDrop {
  0% { opacity: 1; transform: scaleY(1); }
  100% { opacity: 0; transform: scaleY(0.3) translateY(20px); }
}

/* ===== ABOUT INTRO 区块 ===== */
.about-intro { background: var(--off-white); }

.about-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-intro-img {
  position: relative;
  border-radius: 2px;
  overflow: hidden;
}

.about-intro-img img {
  width: 100%;
  height: 500px;
  object-fit: cover;
}

.about-experience {
  position: absolute;
  bottom: 30px;
  right: -20px;
  background: var(--gold);
  color: var(--dark-blue);
  padding: 24px 30px;
  text-align: center;
}

.exp-num {
  display: block;
  font-family: var(--font-en);
  font-size: 42px;
  font-weight: 700;
  line-height: 1;
}

.exp-label {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  margin-top: 4px;
  display: block;
}

.about-intro-text .section-tag { text-align: left; }
.about-intro-text .section-title { text-align: left; font-size: 36px; }

.about-intro-desc {
  font-size: 15px;
  color: #555;
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-stats {
  display: flex;
  gap: 32px;
  margin: 32px 0;
  padding: 28px 0;
  border-top: 1px solid #e0e0e0;
  border-bottom: 1px solid #e0e0e0;
}

.stat-item { text-align: center; }

.stat-num {
  display: block;
  font-family: var(--font-en);
  font-size: 32px;
  font-weight: 700;
  color: var(--dark-blue);
}

.stat-label {
  font-size: 12px;
  color: #888;
  margin-top: 4px;
  display: block;
}

/* ===== 产品展示区 ===== */
.products-showcase { background: #fff; }

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.product-card {
  position: relative;
  overflow: hidden;
  display: block;
  cursor: pointer;
}

.product-card-img {
  width: 100%;
  aspect-ratio: 1/1;
  overflow: hidden;
  position: relative;
  background: #ecebe9;
}

.product-card-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.5s ease;
}

.product-card:hover .product-card-img img {
  transform: scale(1.06);
}

.product-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,22,42,0.85) 0%, rgba(10,22,42,0.1) 60%);
}

.product-card-body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 32px;
  color: white;
}

.product-card-body h3 {
  font-family: var(--font-en);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.product-card-body p {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
  line-height: 1.6;
  margin-bottom: 14px;
}

.product-card-link {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gold);
  border-bottom: 1px solid var(--gold);
  padding-bottom: 2px;
  display: inline-block;
  transition: gap 0.2s;
}

.products-cta {
  text-align: center;
  margin-top: 60px;
}

/* ===== 品质保障区块 ===== */
.quality-section {
  position: relative;
  overflow: hidden;
  padding: 120px 0;
}

.quality-bg {
  position: absolute;
  inset: 0;
}

.quality-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.quality-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 22, 42, 0.88);
}

.quality-content {
  position: relative;
  z-index: 2;
}

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

.quality-item {
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.08);
  padding: 48px 32px;
  text-align: center;
  transition: background 0.3s;
}

.quality-item:hover {
  background: rgba(200, 169, 110, 0.1);
}

.quality-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 24px;
  color: var(--gold);
}

.quality-item h3 {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  color: white;
  margin-bottom: 14px;
  line-height: 1.3;
}

.quality-item p {
  font-size: 13px;
  color: rgba(255,255,255,0.65);
  line-height: 1.8;
}

/* ===== 行业应用区块 ===== */
.industry-section { background: var(--off-white); }

.industry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
}

.industry-card {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.industry-card-img {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
}

.industry-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.industry-card:hover .industry-card-img img {
  transform: scale(1.05);
}

.industry-card-body {
  padding: 28px 28px 32px;
  background: white;
}

.industry-card-body h3 {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  color: var(--dark-blue);
  margin-bottom: 10px;
}

.industry-card-body p {
  font-size: 13px;
  color: #666;
  line-height: 1.8;
}

.industry-cta {
  text-align: center;
  margin-top: 56px;
}

/* ===== CTA 区块 ===== */
.cta-section {
  background: var(--dark-blue);
  text-align: center;
  padding: 100px 0;
}

.cta-section h2 {
  font-family: var(--font-en);
  font-size: 42px;
  color: white;
  margin-bottom: 20px;
  font-weight: 700;
}

.cta-section p {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

/* ===== 页脚 ===== */
.footer {
  background: #080f1a;
  color: rgba(255,255,255,0.6);
  padding: 80px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 60px;
  padding-bottom: 60px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.footer-logo .logo-icon {
  width: 100px;
  height: 36px;
  color: var(--gold);
}

.footer-logo-text {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  color: white;
  letter-spacing: 3px;
}

.footer-about p {
  font-size: 16px;
  line-height: 1.9;
}

.footer-links h4,
.footer-products h4,
.footer-contact h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: white;
  margin-bottom: 20px;
}

.footer-links a,
.footer-products a {
  display: block;
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  padding: 5px 0;
  transition: color 0.2s;
}

.footer-links a:hover,
.footer-products a:hover {
  color: var(--gold);
}

.footer-contact p {
  font-size: 13px;
  line-height: 1.9;
  margin-bottom: 4px;
}

.footer-bottom {
  padding: 24px 0;
  font-size: 12px;
  text-align: center;
  color: rgba(255,255,255,0.3);
}

/* ===== 产品列表页 ===== */
.page-hero {
  height: 400px;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding-bottom: 60px;
  margin-top: 0;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
}

.page-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(10,22,42,0.6), rgba(10,22,42,0.85));
}

.page-hero-content {
  position: relative;
  z-index: 2;
}

.page-hero-content .section-tag { text-align: left; }

.page-hero h1 {
  font-family: var(--font-en);
  font-size: 52px;
  font-weight: 700;
  color: white;
  line-height: 1.1;
}

/* ===== 产品列表 ===== */
.products-list { background: white; padding: 80px 0; }

.products-filter {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-btn {
  padding: 8px 22px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 1px;
  border: 1px solid #ddd;
  background: white;
  color: #555;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--dark-blue);
  color: white;
  border-color: var(--dark-blue);
}

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

.product-list-card {
  border: 1px solid #eee;
  transition: box-shadow 0.3s, transform 0.3s;
  display: block;
  overflow: hidden;
}

.product-list-card:hover {
  box-shadow: 0 8px 40px rgba(0,0,0,0.1);
  transform: translateY(-4px);
}

.plc-img {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background: #f5f5f5;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.plc-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.4s;
}

.product-list-card:hover .plc-img img {
  transform: scale(1.05);
}

.plc-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--gold);
  color: var(--dark-blue);
  font-size: 10px;
  font-weight: 700;
  padding: 4px 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.plc-body {
  padding: 24px;
}

.plc-model {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.plc-body h3 {
  font-family: var(--font-en);
  font-size: 20px;
  font-weight: 700;
  color: var(--dark-blue);
  margin-bottom: 10px;
}

.plc-body p {
  font-size: 13px;
  color: #666;
  line-height: 1.7;
  margin-bottom: 18px;
}

.plc-link {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--dark-blue);
  text-transform: uppercase;
  border-bottom: 1px solid var(--dark-blue);
  display: inline-block;
  padding-bottom: 2px;
  transition: color 0.2s, border-color 0.2s;
}

.plc-link:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* ===== 产品详情页 ===== */
.product-detail { padding: 100px 0 80px; background: white; }

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.product-detail-gallery { position: sticky; top: 100px; }

.product-main-img {
  width: 100%;
  aspect-ratio: 1/1;
  overflow: hidden;
  background: #f8f8f8;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.product-main-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 8px;
}

.product-info .section-tag { text-align: left; }

.product-info h1 {
  font-family: var(--font-en);
  font-size: 42px;
  font-weight: 700;
  color: var(--dark-blue);
  margin-bottom: 16px;
}

/* 产品型号标题：改用无衬线 + 等宽数字，避免衬线字体的旧式数字高低错落 */
.product-info h1.product-model {
  font-family: 'Segoe UI', 'Helvetica Neue', Arial, 'Noto Sans SC', sans-serif;
  font-size: 31px;
  font-weight: 700;
  letter-spacing: 2.5px;
  line-height: 1.3;
  font-variant-numeric: lining-nums tabular-nums;
  white-space: nowrap;
  margin-bottom: 14px;
}

/* 中文产品名称标题 */
.product-info h1.product-name {
  font-family: var(--font-cn);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: 1px;
  line-height: 1.35;
  margin-bottom: 14px;
}

.product-info .product-subtitle {
  font-size: 18px;
  color: #555;
  margin-bottom: 30px;
  line-height: 1.7;
}

/* 认证图标条 */
.cert-badges {
  margin: 2px 0 30px;
}

.cert-badges img {
  display: block;
  width: 262px;
  height: auto;
  max-width: 100%;
}

.product-specs {
  background: var(--off-white);
  padding: 32px;
  margin-bottom: 32px;
}

.product-specs h3 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--dark-blue);
  margin-bottom: 20px;
}

.spec-list { list-style: none; }

.spec-list li {
  display: flex;
  align-items: flex-start;
  padding: 10px 0;
  border-bottom: 1px solid rgba(0,0,0,0.06);
  font-size: 14px;
  line-height: 1.6;
}

.spec-list li:last-child { border-bottom: none; }

.spec-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--gold);
  border-radius: 50%;
  margin-top: 8px;
  margin-right: 14px;
  flex-shrink: 0;
}

.product-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* 相关产品区块 */
.related-products {
  background: var(--off-white);
  padding: 80px 0;
}

/* ===== 关于页面 ===== */
.about-hero { }

.about-bg-section {
  position: relative;
  padding: 120px 0;
  overflow: hidden;
}

.about-bg-section .bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-bg-section .bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10,22,42,0.82);
}

.about-bg-section .container {
  position: relative;
  z-index: 2;
}

.about-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-content-text h2 {
  font-family: var(--font-en);
  font-size: 38px;
  font-weight: 700;
  color: white;
  margin-bottom: 24px;
  line-height: 1.2;
}

.about-content-text p {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  line-height: 1.9;
  margin-bottom: 16px;
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-top: 16px;
}

.stat-box {
  background: rgba(255,255,255,0.05);
  padding: 28px;
  text-align: center;
  border: 1px solid rgba(255,255,255,0.08);
}

.stat-box .num {
  font-family: var(--font-en);
  font-size: 40px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
  display: block;
}

.stat-box .label {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  margin-top: 8px;
  display: block;
  letter-spacing: 0.5px;
}

/* 工厂图片区块 */
.factory-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: auto auto;
  gap: 3px;
}

.factory-img {
  overflow: hidden;
}

.factory-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s;
}

.factory-img:hover img {
  transform: scale(1.04);
}

.factory-img.large {
  grid-row: span 2;
  min-height: 500px;
}

.factory-img.small { height: 245px; }

/* ===== 联系页面 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 80px;
  align-items: start;
}

.contact-info h2 {
  font-family: var(--font-en);
  font-size: 36px;
  font-weight: 700;
  color: var(--dark-blue);
  margin-bottom: 20px;
}

.contact-info p {
  font-size: 15px;
  color: #666;
  line-height: 1.8;
  margin-bottom: 36px;
}

.contact-detail {
  display: flex;
  gap: 18px;
  align-items: flex-start;
  margin-bottom: 24px;
}

.contact-detail-icon {
  width: 44px;
  height: 44px;
  background: var(--off-white);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--gold);
}

.contact-detail-icon svg { width: 20px; height: 20px; }

.contact-detail h4 {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--dark-blue);
  margin-bottom: 4px;
}

.contact-detail p {
  font-size: 14px;
  color: #555;
  margin: 0;
  line-height: 1.6;
}

.contact-form {
  background: var(--off-white);
  padding: 48px;
}

.contact-form h3 {
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 700;
  color: var(--dark-blue);
  margin-bottom: 32px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--dark-blue);
  margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 16px;
  border: 1px solid #ddd;
  background: white;
  font-size: 14px;
  font-family: var(--font-cn);
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
  -webkit-appearance: none;
  border-radius: 0;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--dark-blue);
}

.form-group textarea {
  height: 120px;
  resize: vertical;
}

.form-submit { text-align: right; }

.form-success {
  display: none;
  background: #d4edda;
  color: #155724;
  padding: 16px;
  font-size: 14px;
  text-align: center;
  margin-top: 16px;
}

/* ===== 行业页面 ===== */
.industry-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2px;
  margin-bottom: 2px;
}

.industry-detail-card {
  position: relative;
  overflow: hidden;
  min-height: 420px;
  display: flex;
  align-items: flex-end;
  cursor: pointer;
}

.industry-detail-card .bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}

.industry-detail-card:hover .bg {
  transform: scale(1.05);
}

.industry-detail-card .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10,22,42,0.9) 0%, rgba(10,22,42,0.2) 60%);
}

.industry-detail-content {
  position: relative;
  z-index: 2;
  padding: 40px;
  color: white;
}

.industry-detail-content h3 {
  font-family: var(--font-en);
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 12px;
}

.industry-detail-content p {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  line-height: 1.7;
}

.industry-detail-card.full-width {
  grid-column: span 2;
  min-height: 380px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .container { padding: 0 24px; }
  .nav { gap: 24px; }
  .logo-sub { font-size: 12px; }
  .header-actions { gap: 16px; }
  .logo-icon { height: 50px; }
  .logo-sub { font-size: 12px; }
  .about-intro-grid,
  .product-detail-grid,
  .about-content-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .quality-grid { grid-template-columns: repeat(2, 1fr); }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .factory-grid { grid-template-columns: 1fr 1fr; }
  .factory-img.large { grid-column: span 2; grid-row: span 1; min-height: 320px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
}

@media (max-width: 880px) and (min-width: 769px) {
  .header-phone { display: none; }
  .logo-icon { height: 46px; }
  .logo-sub { font-size: 11px; letter-spacing: 0.5px; }
}

@media (max-width: 768px) {
  .nav, .btn-header { display: none; }
  .header-phone {
    width: 40px;
    height: 40px;
    justify-content: center;
    background: var(--gold);
    color: var(--dark-blue);
    border-radius: 50%;
  }
  .header-phone span { display: none; }
  .header-phone svg { width: 19px; height: 19px; color: var(--dark-blue); }
  .logo-icon { height: 38px; }
  .logo { gap: 4px; }
  .logo-sub { font-size: 11px; letter-spacing: 0.5px; }
  .header-inner { height: 74px; }
  .nav.mobile-open { top: 74px; }
  .hero-phone { margin-top: 26px; padding: 10px 20px 10px 10px; gap: 11px; }
  .hero-phone-icon { width: 40px; height: 40px; }
  .hero-phone-icon svg { width: 19px; height: 19px; }
  .hero-phone-label { font-size: 10px; letter-spacing: 2px; }
  .hero-phone-num { font-size: 21px; letter-spacing: 1px; }
  .mobile-toggle { display: flex; }
  .section { padding: 64px 0; }
  .hero-title { font-size: 36px; }
  .quality-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr; }
  .industry-grid { grid-template-columns: 1fr; }
  .products-list-grid { grid-template-columns: 1fr 1fr; }
  .section-title { font-size: 32px; }
  .product-info h1.product-model { font-size: 23px; letter-spacing: 1.2px; }
  .product-info h1.product-name { font-size: 25px; }
  .cert-badges img { width: 190px; }
  .plc-model { font-size: 10px; letter-spacing: 1.2px; }
  .cta-section h2 { font-size: 30px; }
  .contact-form { padding: 28px; }
  .form-row { grid-template-columns: 1fr; }
  .industry-detail-grid { grid-template-columns: 1fr; }
  .industry-detail-card.full-width { grid-column: span 1; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-stats { flex-wrap: wrap; }
}

@media (max-width: 480px) {
  .products-list-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; align-items: flex-start; }
}

/* ===== 动画 ===== */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

/* 移动端菜单 */
.nav.mobile-open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 88px;
  left: 0;
  right: 0;
  background: var(--dark-blue);
  padding: 24px 40px;
  gap: 20px;
  align-items: flex-start;
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}