/* 全局基础样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

:root {
  --primary: #0066cc;
  --secondary: #0099ff;
  --dark-bg: #f8f9fc;
  --text-main: #333;
  --text-secondary: #666;
  --card-shadow: 0 6px 16px rgba(0, 102, 204, 0.08);
  --radius: 16px;
}

body {
  background: #ffffff;
  color: var(--text-main);
  line-height: 1.7;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 导航栏 - 极简悬浮 */
.header {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  padding: 18px 0;
  position: sticky;
  top: 0;
  z-index: 999;
}

.nav-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.nav-list {
  display: flex;
  list-style: none;
  gap: 40px;
}

.nav-list a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
}

.nav-list a:hover, .nav-list a.active {
  color: var(--primary);
}

/* 英雄区 - 创新斜切背景 */
.hero {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: #fff;
  padding: 120px 0 80px 0;
  clip-path: polygon(0 0, 100% 0, 100% 85%, 0 100%);
  margin-bottom: 80px;
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  font-size: 38px;
  margin-bottom: 15px;
  line-height: 1.2;
  color: #fff;
}

.hero p {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 0;
  color: #fff;
}

/* 创新布局：概览+图片 非对称模块 */
.overview {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: center;
  margin-bottom: 100px;
}

.overview-text h2 {
  font-size: 28px;
  color: var(--primary);
  margin-bottom: 20px;
  position: relative;
  padding-left: 16px;
  border-left: 4px solid var(--secondary);
}

.overview-text p {
  color: var(--text-secondary);
  font-size: 16px;
  margin-bottom: 15px;
}

.overview-img {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--card-shadow);
  transform: translateY(10px);
  transition: transform 0.4s ease;
}

.overview-img:hover {
  transform: translateY(0);
}

.overview-img img {
  width: 100%;
  height: auto;
  display: block;
}

/* 核心算力参数 - 创新卡片布局 */
.specs {
  background: var(--dark-bg);
  padding: 80px 0;
  border-radius: var(--radius);
  margin-bottom: 100px;
}

.specs-title {
  text-align: center;
  margin-bottom: 50px;
}

.specs-title h2 {
  font-size: 28px;
  color: var(--primary);
  margin-bottom: 10px;
}

.specs-title p {
  color: var(--text-secondary);
  font-size: 16px;
}

.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 25px;
}

.spec-card {
  background: #fff;
  padding: 30px;
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  text-align: center;
  transition: transform 0.3s ease;
}

.spec-card:hover {
  transform: translateY(-5px);
}

.spec-card .num {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.spec-card h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

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

/* 核心能力模块 - 创新横向布局 */
.capability {
  margin-bottom: 100px;
}

.capability-title {
  font-size: 28px;
  color: var(--primary);
  margin-bottom: 40px;
  text-align: center;
}

.capability-box {
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: 40px;
  max-width: 900px;
  margin: 0 auto;
}

.capability-box p {
  color: var(--text-secondary);
  font-size: 16px;
  line-height: 1.8;
  text-align: center;
}