/* ============================================
   小酒窝微光官网 - 全局样式
   ============================================ */

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

:root {
  --primary: #090d14;
  --primary-light: #121824;
  --accent: #20d6c7;
  --accent-hover: #14b8aa;
  --warm: #f0b84f;
  --violet: #6f6be8;
  --accent-glow: rgba(0, 212, 255, 0.15);
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --text-muted: #64748b;
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(0, 212, 255, 0.3);
  --card-bg: rgba(255, 255, 255, 0.04);
  --card-bg-hover: rgba(255, 255, 255, 0.07);
  --nav-height: 70px;
  --section-padding: 50px 0;
  --container-max: 1280px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-en: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-zh: 'PingFang SC', 'Microsoft YaHei', sans-serif;
}

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

body {
  font-family: var(--font-zh), var(--font-en);
  background: var(--primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---- 通用布局 ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--section-padding);
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: 6px 16px;
  border-radius: 20px;
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 16px;
}

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

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 560px;
  line-height: 1.8;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

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

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: var(--accent);
  padding: 0;
  font-size: 14px;
}

.btn-ghost:hover {
  gap: 12px;
}

.btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.2s;
}

.btn-ghost:hover svg {
  transform: translateX(4px);
}

/* ---- 分割线 ---- */
.divider {
  height: 1px;
  background: var(--border);
}

/* ---- 动画工具类 ---- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.fade-in {
  opacity: 0;
  transition: opacity 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
}

/* ============================================
   导航栏
   ============================================ */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(10, 14, 26, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  gap: 18px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
}

.nav-logo-text {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.5px;
}

.nav-logo-text span {
  color: var(--accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin-right: auto;
}

.nav-menu a {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 16px;
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 6px;
  transition: var(--transition);
  position: relative;
}

.nav-menu a:hover,
.nav-menu a.active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

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

/* 下拉菜单 */
.nav-item.has-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: rgba(15, 20, 35, 0.98);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 8px;
  min-width: 160px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(-8px);
  transition: var(--transition);
}

.nav-item.has-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
  display: block;
  padding: 10px 16px;
  font-size: 13px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 6px;
  transition: var(--transition);
  white-space: nowrap;
}

.dropdown-menu a:hover {
  color: var(--accent);
  background: var(--accent-glow);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-lang {
  font-size: 13px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 6px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  transition: var(--transition);
  background: transparent;
}

.nav-lang:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.nav-contact-btn {
  font-size: 13px;
  padding: 8px 20px;
}

/* 汉堡菜单 */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}

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

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* 移动端菜单 */
.nav-mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(10, 14, 26, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 24px 24px;
  z-index: 999;
}

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

.nav-mobile a {
  display: block;
  padding: 14px 0;
  font-size: 15px;
  color: var(--text-secondary);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s;
}

.nav-mobile a:hover {
  color: var(--accent);
}

/* ============================================
   Hero 区
   ============================================ */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--nav-height);
}

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

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,0.6) 0%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-text {
  max-width: 580px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.25);
  padding: 8px 18px;
  border-radius: 30px;
  margin-bottom: 28px;
}

.hero-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(36px, 5.5vw, 64px);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.hero-title .line {
  display: block;
}

.hero-title .highlight {
  color: transparent;
  background: linear-gradient(90deg, var(--accent), #5b5bd6);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.hero-stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
}

.hero-stat-value span {
  color: var(--accent);
}

.hero-stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Hero 右侧产品展示 */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-product-card {
  position: relative;
  width: 100%;
  max-width: 560px;
}

.hero-product-frame {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-product-frame::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.hero-image-frame {
  min-height: 420px;
  padding: 0;
  border-radius: 22px;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.38);
}

.hero-banner-img {
  width: 100%;
  height: 100%;
  min-height: 420px;
  display: block;
  object-fit: cover;
}

.hero-image-overlay {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 22px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(9, 13, 20, 0.82), rgba(9, 13, 20, 0.42));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.product-icon-3d {
  width: 180px;
  height: 180px;
  margin: 0 auto 24px;
}

.hero-product-name {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.hero-product-tag {
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.hero-product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}

.hero-image-overlay .hero-product-specs {
  min-width: 220px;
  margin-top: 0;
}

.spec-item {
  background: rgba(0, 212, 255, 0.06);
  border: 1px solid rgba(0, 212, 255, 0.1);
  border-radius: 8px;
  padding: 10px 14px;
  text-align: left;
}

.spec-label {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.spec-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2px;
}

/* 浮动徽章 */
.floating-badge {
  position: absolute;
  background: rgba(10, 14, 26, 0.9);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  animation: float 3s ease-in-out infinite;
}

.floating-badge-1 {
  top: 20px;
  right: -30px;
  animation-delay: 0s;
}

.floating-badge-2 {
  bottom: 20px;
  left: -30px;
  animation-delay: 1.5s;
}

.floating-badge .badge-icon {
  width: 32px;
  height: 32px;
  background: var(--accent-glow);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-badge .badge-text {
  font-size: 12px;
}

.floating-badge .badge-text strong {
  display: block;
  font-size: 14px;
  font-weight: 600;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* ============================================
   图片 Banner
   ============================================ */
.banner-section {
  padding: 36px 0 16px;
  background: rgba(255, 255, 255, 0.015);
  border-bottom: 1px solid var(--border);
}

.banner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.banner-card {
  position: relative;
  min-height: 260px;
  display: block;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: 16px;
  color: var(--text-primary);
  text-decoration: none;
  background: var(--card-bg);
  transition: var(--transition);
}

.banner-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.banner-card img {
  width: 100%;
  height: 100%;
  min-height: 260px;
  display: block;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.banner-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 20%, rgba(0, 0, 0, 0.74) 100%);
}

.banner-card-body {
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 20px;
  z-index: 1;
}

.banner-kicker {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.banner-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 6px;
}

.banner-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.6;
}

/* ============================================
   品牌价值 - Vision/Mission/Values
   ============================================ */
#values {
  background: rgba(255, 255, 255, 0.015);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
}

.value-item {
  background: var(--primary);
  padding: 48px 40px;
  transition: var(--transition);
}

.value-item:hover {
  background: rgba(255, 255, 255, 0.03);
}

.value-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
}

.value-icon svg {
  width: 24px;
  height: 24px;
  color: var(--accent);
}

.value-en {
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.value-title {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
}

.value-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ============================================
   解决方案 Solution
   ============================================ */
#solution {
  position: relative;
}

.solution-header {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: flex-end;
  margin-bottom: 60px;
}

.solution-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.solution-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 28px;
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow), transparent);
  opacity: 0;
  transition: opacity 0.3s;
}

.solution-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  background: var(--card-bg-hover);
}

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

.solution-card.featured {
  border-color: rgba(0, 212, 255, 0.25);
  background: rgba(0, 212, 255, 0.04);
}

.solution-card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  position: relative;
  z-index: 1;
}

.solution-card-icon svg {
  width: 26px;
  height: 26px;
}

.solution-card-num {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-muted);
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.solution-card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.solution-card-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
  position: relative;
  z-index: 1;
}

.solution-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 20px;
  position: relative;
  z-index: 1;
}

.tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

/* ============================================
   产品展示 Products
   ============================================ */
#products {
  background: rgba(255, 255, 255, 0.015);
}

.products-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 40px;
}

.products-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 48px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px;
  width: fit-content;
}

.product-tab {
  padding: 10px 24px;
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 7px;
  transition: var(--transition);
  border: none;
  background: none;
}

.product-tab.active {
  background: var(--primary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

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

.products-single {
  max-width: 720px;
  margin: 0 auto;
}

.product-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.product-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.product-card.large {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.product-card-visual {
  background: rgba(0, 212, 255, 0.04);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.product-card-visual::before {
  content: '';
  position: absolute;
  width: 200px;
  height: 200px;
  background: var(--accent);
  opacity: 0.06;
  border-radius: 50%;
  filter: blur(40px);
}

.product-card-banner {
  aspect-ratio: 16 / 9;
  min-height: 0;
  padding: 0;
  background: #121924;
}

.product-card-banner::before {
  display: none;
}

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

.product-shop-card:hover .product-card-banner img {
  transform: scale(1.04);
}

.product-card-ad::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 44%, rgba(0, 0, 0, 0.62) 100%);
  pointer-events: none;
}

.product-ad-copy {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 26px;
  z-index: 1;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.product-ad-copy span {
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.product-ad-copy strong {
  font-size: 22px;
  line-height: 1.2;
}

.product-3d-placeholder {
  position: relative;
  z-index: 1;
}

.product-card-info {
  padding: 22px;
  display: flex;
  flex-direction: column;
  min-height: 118px;
}

.product-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  width: fit-content;
}

.product-name {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
}

.product-price {
  color: var(--accent);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.2;
  margin-top: auto;
}

.product-slogan {
  font-size: 14px;
  color: var(--accent);
  margin-bottom: 16px;
}

.product-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
  flex: 1;
}

.product-specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
  margin-bottom: 28px;
}
.case-icon-wrap img{
  width: 100%;
  height: 100%;
}
.product-spec {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}

.product-spec-key {
  font-size: 11px;
  color: var(--text-muted);
}

.product-spec-val {
  font-size: 13px;
  font-weight: 600;
  margin-top: 3px;
}

.product-actions {
  display: flex;
  gap: 12px;
  margin-top: auto;
}

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

/* ============================================
   服务流程
   ============================================ */
#oxm {
  position: relative;
}

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

.oxm-text {
  /* left */
}

.oxm-flow {
  /* right */
}

.oxm-steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.oxm-step {
  display: flex;
  gap: 20px;
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
  cursor: pointer;
}

.oxm-step:first-child {
  padding-top: 0;
}

.oxm-step:last-child {
  border-bottom: none;
}

.oxm-step:hover .oxm-step-num {
  background: var(--accent);
  color: #000;
}

.oxm-step-num {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  transition: var(--transition);
}

.oxm-step-body {
  flex: 1;
}

.oxm-step-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

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

.oxm-targets {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 36px;
}

.oxm-target-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 20px;
}

.oxm-target-type {
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 8px;
}

.oxm-target-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 6px;
}

.oxm-target-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   案例展示 Cases
   ============================================ */
#cases {
  background: rgba(255, 255, 255, 0.015);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.case-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.case-card-img {
  height: 200px;
  background: rgba(0, 212, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.case-img-placeholder {
  position: relative;
  z-index: 1;
}

.case-card-body {
  padding: 24px;
}

.case-category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.case-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  line-height: 1.5;
}

.case-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.case-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.case-client {
  font-size: 12px;
  color: var(--text-muted);
}

/* ============================================
   新闻动态 News
   ============================================ */
#news {
  position: relative;
}

.news-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 48px;
}

.news-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 20px;
}

.news-card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.news-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.news-card.featured {
  grid-row: span 2;
  display: flex;
  flex-direction: column;
}

.news-card-wide {
  grid-column: 2 / span 2;
}

.news-card-split {
  display: grid;
  grid-template-columns: 1fr 2fr;
}

.news-card-img {
  height: 240px;
  background: rgba(0, 212, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

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

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

.news-card.featured .news-card-img {
  height: 300px;
}

.news-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.news-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.news-category {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-glow);
  padding: 3px 10px;
  border-radius: 20px;
}

.news-date {
  font-size: 12px;
  color: var(--text-muted);
}

.news-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
}

.news-card.featured .news-title {
  font-size: 20px;
}

.news-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.news-read-more {
  margin-top: 16px;
  font-size: 13px;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s;
}

.news-read-more:hover {
  gap: 10px;
}

/* ============================================
   关于我们 About
   ============================================ */
#about {
  background: rgba(255, 255, 255, 0.015);
}

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

.about-milestones {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.about-milestones::before {
  content: '';
  position: absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

.milestone {
  display: flex;
  gap: 20px;
  padding: 20px 0;
  position: relative;
}

.milestone-dot {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
  transition: var(--transition);
}

.milestone:hover .milestone-dot {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.milestone-dot span {
  width: 8px;
  height: 8px;
  background: var(--border);
  border-radius: 50%;
  display: block;
  transition: var(--transition);
}

.milestone:hover .milestone-dot span {
  background: var(--accent);
}

.milestone-content {
  padding-top: 6px;
}

.milestone-year {
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 1px;
  margin-bottom: 4px;
}

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

.about-info {
  /* right */
}

.about-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 36px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 36px;
}

.about-feature {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.about-feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: var(--accent-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.about-feature-icon svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
}

.about-feature-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.about-feature-text strong {
  display: block;
  font-size: 15px;
  color: var(--text-primary);
  margin-bottom: 2px;
}

/* ============================================
   联系我们 Contact
   ============================================ */
#contact {
  position: relative;
}

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

.contact-info-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 36px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 212, 255, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon svg {
  width: 20px;
  height: 20px;
  color: var(--accent);
}

.contact-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-value {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
}

/* 联系表单 */
.contact-form {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px;
}

.form-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 28px;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-label {
  display: block;
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-primary);
  font-family: inherit;
  transition: var(--transition);
  outline: none;
  -webkit-appearance: none;
}

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--accent);
  background: rgba(0, 212, 255, 0.04);
}

.form-select {
  cursor: pointer;
}

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

.form-submit {
  width: 100%;
  padding: 14px;
  font-size: 15px;
}

/* ============================================
   页脚 Footer
   ============================================ */
#footer {
  background: rgba(0, 0, 0, 0.3);
  border-top: 1px solid var(--border);
}

.footer-top {
  padding: 72px 0 48px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .nav-logo {
  margin-bottom: 16px;
}

.footer-brand-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
  max-width: 240px;
}

.footer-hotline {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 24px;
  padding: 14px 20px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 10px;
}

.footer-hotline-icon {
  color: var(--accent);
}

.footer-hotline-label {
  font-size: 11px;
  color: var(--text-muted);
}

.footer-hotline-num {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.footer-col-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-qr {
  text-align: center;
}

.footer-qr-box {
  width: 100px;
  height: 100px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
  color: #000;
  font-size: 11px;
  text-align: center;
  line-height: 1.4;
  padding: 8px;
}

.footer-qr-label {
  font-size: 12px;
  color: var(--text-muted);
}

.footer-bottom {
  padding: 24px 0;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-legal {
  display: flex;
  gap: 20px;
}

.footer-legal a,
.footer-legal span {
  font-size: 13px;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-legal a:hover {
  color: var(--text-secondary);
}

/* 回到顶部 */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 44px;
  height: 44px;
  background: var(--primary);
  border: 1px solid var(--border);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
  opacity: 0;
  pointer-events: none;
  z-index: 100;
}

#back-to-top.visible {
  opacity: 1;
  pointer-events: all;
}

#back-to-top:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-3px);
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px 0;
  }

  .hero-content {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-text {
    max-width: 100%;
  }

  .hero-desc {
    max-width: 100%;
  }

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

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

  .hero-visual {
    order: -1;
  }

  .hero-product-card {
    max-width: 560px;
  }

  .hero-image-frame,
  .hero-banner-img {
    min-height: 340px;
  }

  .hero-image-overlay {
    align-items: flex-start;
    flex-direction: column;
  }

  .floating-badge-1,
  .floating-badge-2 {
    display: none;
  }

  .values-grid {
    grid-template-columns: 1fr;
  }

  .banner-grid {
    grid-template-columns: 1fr;
  }

  .solution-header {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .solution-cards {
    grid-template-columns: 1fr 1fr;
  }

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

  .products-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .product-card.large {
    grid-column: span 1;
    grid-template-columns: 1fr;
  }

  .oxm-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .cases-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .news-card.featured {
    grid-column: span 2;
  }

  .news-card-wide {
    grid-column: span 2;
  }

  .about-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: span 3;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px 0;
  }

  .nav-menu,
  .nav-actions {
    display: none;
  }

  .nav-hamburger {
    display: flex;
  }

  .solution-cards {
    grid-template-columns: 1fr;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

  .cases-grid {
    grid-template-columns: 1fr;
  }

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

  .news-card.featured {
    grid-column: span 1;
  }

  .news-card-wide {
    grid-column: span 1;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .footer-brand {
    grid-column: span 2;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
  }

  .hero-image-frame,
  .hero-banner-img {
    min-height: 300px;
  }

  .hero-image-overlay {
    left: 14px;
    right: 14px;
    bottom: 14px;
    padding: 14px;
  }

  .hero-image-overlay .hero-product-specs {
    min-width: 0;
    width: 100%;
  }

  .product-ad-copy {
    left: 18px;
    right: 18px;
    bottom: 18px;
    align-items: flex-start;
    flex-direction: column;
  }

  .oxm-targets {
    grid-template-columns: 1fr;
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

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

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

  .hero-product-specs {
    grid-template-columns: 1fr;
  }

  .banner-card,
  .banner-card img {
    min-height: 220px;
  }

}

/* ============================================
   Logo 图片
   ============================================ */
.logo-img {
  width: 38px;
  height: 38px;
  object-fit: contain;
  border-radius: 8px;
  display: block;
  flex-shrink: 0;
}