/* ============================================
   极码智造 GEO营销系统 - 全局样式
   ============================================ */

:root {
  /* 主色调 - 科技深蓝 + 工业橙红 */
  --color-primary: #1a1f36;
  --color-primary-light: #2d3561;
  --color-accent: #e63946;
  --color-accent-light: #ff5a6e;
  --color-accent-dark: #c1121f;
  --color-secondary: #3b82f6;
  --color-success: #10b981;
  --color-warning: #f59e0b;

  /* 中性色 */
  --color-bg: #ffffff;
  --color-bg-alt: #f8f9fc;
  --color-bg-dark: #0f172a;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-text-muted: #94a3b8;
  --color-border: #e2e8f0;
  --color-border-dark: #334155;

  /* 渐变 */
  --gradient-hero: linear-gradient(135deg, #0f172a 0%, #1e3a5f 50%, #1a1f36 100%);
  --gradient-accent: linear-gradient(135deg, #e63946 0%, #ff5a6e 100%);
  --gradient-card: linear-gradient(135deg, #f8f9fc 0%, #eef2f7 100%);

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* 圆角 */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  --shadow-xl: 0 24px 64px rgba(0,0,0,0.16);

  /* 过渡 */
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* 布局 */
  --container-max: 1200px;
  --header-height: 72px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial,
    sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ============================================
   SVG 图标
   ============================================ */
.icon {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
  vertical-align: -0.15em;
  display: inline-block;
  pointer-events: none;
  color: inherit;
  fill: currentColor;
}

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

.section {
  padding: var(--space-2xl) 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: var(--color-bg-dark);
  color: #e2e8f0;
}

.section__header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-xl);
}

.section__tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(230, 57, 70, 0.1);
  color: var(--color-accent);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.5px;
}

.section--dark .section__tag {
  background: rgba(230, 57, 70, 0.15);
  color: var(--color-accent-light);
}

.section__title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.section--dark .section__title {
  color: #ffffff;
}

.section__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-top: var(--space-sm);
}

.section--dark .section__subtitle {
  color: #94a3b8;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition);
}

.navbar--scrolled {
  box-shadow: var(--shadow-md);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
}

.navbar__logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-accent);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}

.navbar__logo-icon .icon {
  width: 22px;
  height: 22px;
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.navbar__link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition);
  position: relative;
}

.navbar__link:hover {
  color: var(--color-accent);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: var(--transition);
}

.navbar__link:hover::after {
  width: 100%;
}

.navbar__cta {
  padding: 10px 24px;
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
}

.navbar__cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(230, 57, 70, 0.3);
}

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.navbar__toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: var(--transition);
}

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

.hero::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(230, 57, 70, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(59, 130, 246, 0.15) 0%, transparent 50%);
}

.hero__grid {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 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: 50px 50px;
}

.hero .container {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  color: #e2e8f0;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--space-md);
  backdrop-filter: blur(8px);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

.hero__title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.2;
  color: #ffffff;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-md);
}

.hero__title-highlight {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: 1.25rem;
  color: #94a3b8;
  margin-bottom: var(--space-lg);
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-sm);
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  border: none;
}

.btn--primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(230, 57, 70, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(230, 57, 70, 0.4);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.btn--ghost:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: rgba(255, 255, 255, 0.3);
}

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

.btn--outline:hover {
  background: var(--color-accent);
  color: #fff;
}

.hero__stats {
  display: flex;
  gap: 40px;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.hero__stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
}

.hero__stat-label {
  font-size: 0.875rem;
  color: #64748b;
  margin-top: 4px;
}

/* Hero 可视化 */
.hero__visual {
  position: relative;
  height: 500px;
}

.hero__card {
  position: absolute;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-md);
  padding: 20px;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.hero__card:hover {
  transform: translateY(-4px);
  border-color: rgba(230, 57, 70, 0.3);
}

.hero__card--1 {
  top: 0; right: 20%;
  width: 280px;
  animation: float 4s ease-in-out infinite;
}

.hero__card--2 {
  top: 35%; right: 0;
  width: 260px;
  animation: float 4s ease-in-out infinite 1s;
}

.hero__card--3 {
  bottom: 0; right: 15%;
  width: 300px;
  animation: float 4s ease-in-out infinite 2s;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.hero__card-title {
  font-size: 0.875rem;
  color: #94a3b8;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero__card-title .icon {
  width: 15px;
  height: 15px;
  color: var(--color-accent-light);
}

.hero__card-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
}

.hero__card-bar {
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  margin-top: 12px;
  overflow: hidden;
}

.hero__card-bar-fill {
  height: 100%;
  background: var(--gradient-accent);
  border-radius: 3px;
  animation: barGrow 2s ease-out;
}

@keyframes barGrow {
  from { width: 0; }
}

/* ============================================
   产品卡片
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
}

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

.product-card:hover::before {
  transform: scaleX(1);
}

.product-card__icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.product-card__icon .icon {
  width: 34px;
  height: 34px;
}

.product-card__icon--iot {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-secondary);
}

.product-card__icon--jima {
  background: rgba(230, 57, 70, 0.1);
  color: var(--color-accent);
}

.product-card__title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.product-card__subtitle {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.product-card__features {
  margin-bottom: var(--space-md);
}

.product-card__feature {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
  font-size: 0.95rem;
  color: var(--color-text);
}

.product-card__feature-icon {
  width: 20px;
  height: 20px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.product-card__feature-icon .icon {
  width: 12px;
  height: 12px;
}

.product-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
}

.product-card__link .icon {
  width: 15px;
  height: 15px;
  transition: transform var(--transition);
}

.product-card__link:hover {
  gap: 10px;
}

.product-card__link:hover .icon {
  transform: translateX(2px);
}

/* ============================================
   解决方案
   ============================================ */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.solution-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition);
  text-align: center;
}

.solution-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.solution-card__icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-md);
  background: var(--gradient-card);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-secondary);
  transition: var(--transition);
}

.solution-card__icon .icon {
  width: 38px;
  height: 38px;
}

.solution-card:hover .solution-card__icon {
  color: var(--color-accent);
  transform: scale(1.06);
}

.solution-card__title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.solution-card__desc {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.solution-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.solution-card__tag {
  padding: 4px 12px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* 卡片链接包裹 */
.solution-card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.solution-card-link:hover {
  text-decoration: none;
  color: inherit;
}

.solution-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: var(--transition);
}

.solution-card-link:hover .solution-card__cta {
  gap: 10px;
}

.solution-card__cta .icon {
  width: 18px;
  height: 18px;
  transition: var(--transition);
}

.solution-card-link:hover .solution-card__cta .icon {
  transform: translateX(3px);
}

/* 系统一览内联链接 */
.system-links a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}
.system-links a:hover {
  color: var(--color-accent);
}

/* 模板列表项链接 */
.content-grid__list-item a {
  color: var(--color-primary);
  text-decoration: none;
  transition: var(--transition);
}
.content-grid__list-item a:hover {
  color: var(--color-accent);
}

/* ============================================
   优势/特点
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.feature-item {
  text-align: left;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: var(--transition);
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(230, 57, 70, 0.3);
}

.feature-item__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: rgba(230, 57, 70, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
  color: var(--color-accent-light);
}

.feature-item__icon .icon {
  width: 26px;
  height: 26px;
}

.feature-item__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.feature-item__desc {
  font-size: 0.9rem;
  color: #94a3b8;
  line-height: 1.6;
}

/* ============================================
   流程
   ============================================ */
.process {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  position: relative;
}

.process::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
  opacity: 0.3;
}

.process__step {
  flex: 1;
  text-align: center;
  position: relative;
}

.process__number {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-sm);
  background: #fff;
  border: 3px solid var(--color-accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-accent);
  position: relative;
  z-index: 2;
  transition: var(--transition);
}

.process__step:hover .process__number {
  background: var(--color-accent);
  color: #fff;
  transform: scale(1.1);
}

.process__title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.process__desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ============================================
   FAQ
   ============================================ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item--active {
  border-color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.faq-item__question {
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-primary);
  background: #fff;
  transition: var(--transition);
}

.faq-item__question:hover {
  background: var(--color-bg-alt);
}

.faq-item__icon {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
  color: var(--color-accent);
}

.faq-item__icon .icon {
  width: 16px;
  height: 16px;
}

.faq-item--active .faq-item__icon {
  transform: rotate(45deg);
}

.faq-item__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
  color: var(--color-text-light);
  line-height: 1.8;
}

.faq-item--active .faq-item__answer {
  max-height: 500px;
  padding: 0 24px 20px;
}

/* ============================================
   CTA区
   ============================================ */
.cta {
  background: var(--gradient-hero);
  position: relative;
  overflow: hidden;
  text-align: center;
}

.cta::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    radial-gradient(circle at 30% 50%, rgba(230, 57, 70, 0.2) 0%, transparent 60%),
    radial-gradient(circle at 70% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 60%);
}

.cta .container {
  position: relative;
  z-index: 2;
}

.cta__title {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-sm);
}

.cta__desc {
  font-size: 1.2rem;
  color: #94a3b8;
  margin-bottom: var(--space-lg);
}

.cta__actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: var(--color-bg-dark);
  color: #94a3b8;
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer__brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer__desc {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
  max-width: 320px;
}

.footer__info {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
  color: #64748b;
}

.footer__info-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  line-height: 1.5;
}

.footer__info-item .icon {
  color: var(--color-accent-light);
  flex-shrink: 0;
}

.footer__info-item a {
  color: #64748b;
  transition: var(--transition);
}

.footer__info-item a:hover {
  color: var(--color-accent-light);
}

.footer__col-title {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-sm);
}

.footer__link {
  display: block;
  font-size: 0.9rem;
  color: #64748b;
  margin-bottom: 8px;
  transition: var(--transition);
}

.footer__link:hover {
  color: var(--color-accent-light);
}

.footer__bottom {
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__bottom a {
  color: #94a3b8;
  transition: var(--transition);
}

.footer__bottom a:hover {
  color: var(--color-accent-light);
}

.footer__contact {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer__contact .icon {
  color: var(--color-accent-light);
}

/* ============================================
   通用页面头部（子页面）
   ============================================ */
.page-header {
  padding: calc(var(--header-height) + var(--space-xl)) 0 var(--space-xl);
  background: var(--gradient-hero);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    radial-gradient(circle at 50% 50%, rgba(230, 57, 70, 0.1) 0%, transparent 60%);
}

.page-header .container {
  position: relative;
  z-index: 2;
}

.page-header__tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(230, 57, 70, 0.15);
  color: var(--color-accent-light);
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--space-sm);
}

.page-header__title {
  font-size: 3rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-sm);
}

.page-header__desc {
  font-size: 1.2rem;
  color: #94a3b8;
  max-width: 640px;
  margin: 0 auto;
}

.page-header__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

/* ============================================
   内容详情页
   ============================================ */
.content-section {
  padding: var(--space-xl) 0;
}

.content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.content-grid--reverse .content-grid__text {
  order: 2;
}

.content-grid__title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.content-grid__desc {
  font-size: 1.05rem;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--space-md);
}

.content-grid__list {
  margin-bottom: var(--space-md);
}

.content-grid__list-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: var(--color-text);
}

.content-grid__list-icon {
  width: 24px;
  height: 24px;
  background: rgba(16, 185, 129, 0.1);
  color: var(--color-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}

.content-grid__list-icon .icon {
  width: 14px;
  height: 14px;
}

.content-grid__visual {
  background: var(--gradient-card);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  min-height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.visual-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 16px;
  color: var(--color-accent);
  display: block;
}

.visual-icon--secondary {
  color: var(--color-secondary);
}

/* 指标卡片 */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
}

.metric-card {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

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

.metric-card__value {
  font-size: 2.5rem;
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.metric-card__label {
  font-size: 0.95rem;
  color: var(--color-text-light);
  margin-top: 8px;
}

/* 技术规格表 */
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-md);
}

.spec-table th,
.spec-table td {
  padding: 14px 20px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.spec-table th {
  background: var(--color-bg-alt);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.95rem;
}

.spec-table td {
  font-size: 0.95rem;
  color: var(--color-text);
}

.spec-table tr:hover td {
  background: var(--color-bg-alt);
}

/* 案例卡片 */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
}

.case-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

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

.case-card__header {
  padding: var(--space-md);
  background: var(--gradient-card);
  border-bottom: 1px solid var(--color-border);
}

.case-card__industry {
  font-size: 0.8rem;
  color: var(--color-accent);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.case-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 8px;
}

.case-card__body {
  padding: var(--space-md);
}

.case-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

.case-card__results {
  display: flex;
  gap: var(--space-md);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

.case-card__result-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-accent);
}

.case-card__result-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

/* 文章列表 */
.article-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
}

.article-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  transition: var(--transition);
  display: flex;
  gap: var(--space-md);
}

.article-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.article-card__date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.article-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.article-card__desc {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

.article-card__tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(230, 57, 70, 0.08);
  color: var(--color-accent);
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
  margin-top: var(--space-sm);
}

/* ============================================
   动画
   ============================================ */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__visual {
    display: none;
  }

  .hero__actions,
  .hero__stats {
    justify-content: center;
  }

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

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

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

@media (max-width: 768px) {
  .navbar__menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    padding: var(--space-md);
    box-shadow: var(--shadow-md);
    gap: var(--space-sm);
  }

  .navbar__menu--open {
    display: flex;
  }

  .navbar__toggle {
    display: flex;
  }

  .hero__title {
    font-size: 2.25rem;
  }

  .hero__desc {
    font-size: 1rem;
  }

  .hero__stats {
    flex-wrap: wrap;
    gap: var(--space-md);
  }

  .section__title {
    font-size: 1.75rem;
  }

  .products-grid,
  .solutions-grid,
  .features-grid,
  .case-grid,
  .article-list,
  .metrics-grid {
    grid-template-columns: 1fr;
  }

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

  .content-grid--reverse .content-grid__text {
    order: 0;
  }

  .process {
    flex-direction: column;
  }

  .process::before {
    display: none;
  }

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

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .cta__title {
    font-size: 1.75rem;
  }

  .page-header__title {
    font-size: 2rem;
  }
}