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

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: radial-gradient(circle at top, #1d2540 0, #050814 55%, #02030a 100%);
  color: #f5f5f5;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

/* 头部 */
.site-header {
  max-width: 1080px;
  margin: 0 auto;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  font-size: 16px;
  text-transform: uppercase;
}

.logo-tag {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 12px;
  margin-left: 6px;
  opacity: 0.8;
}

.nav {
  display: flex;
  gap: 18px;
  font-size: 14px;
  opacity: 0.9;
}

.nav a:hover {
  opacity: 1;
}

/* 顶部介绍 */
.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 20px 30px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 4px 10px;
  font-size: 12px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  margin-bottom: 14px;
}

.tag-pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.8);
}

.hero-title {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
}

.hero-title span {
  background: linear-gradient(120deg, #60a5fa, #a855f7, #f97316);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 14px;
  color: #cbd5f5;
  max-width: 560px;
}

/* 通用 section */
.section {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 40px;
}

.section-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 14px;
}

/* 主营业务网格 */
.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  border-radius: 16px;
  padding: 16px 18px 18px;
  background: rgba(15, 23, 42, 0.92);
  border: 1px solid rgba(148, 163, 184, 0.38);
  font-size: 13px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* 按钮：改成蓝色渐变科技风 */
.buy-btn {
  margin-top: 8px;
  align-self: flex-start;
  padding: 9px 18px;
  border-radius: 999px;
  border: none;
  font-size: 13px;
  color: #fff;
  cursor: pointer;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.45);
  transition: 0.2s;
}

.buy-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(37, 99, 235, 0.55);
}

/* 小程序二维码浮层（美化 + 默认隐藏） */
.mp-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  display: none;               /* 🔴 关键：默认隐藏，点击按钮再用 JS 设置为 flex */
  align-items: center;
  justify-content: center;
  z-index: 9999;
}

.mp-dialog {
  background: radial-gradient(circle at top, #111827 0%, #020617 70%);
  border-radius: 20px;
  padding: 24px 22px 20px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  max-width: 330px;
  width: 90%;
  text-align: center;
  color: #e5e7eb;
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.7);
  animation: fadeIn 0.25s ease-out;
}

.mp-dialog-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 10px;
  color: #dbeafe;
}

.mp-qrcode {
  width: 220px;
  height: 220px;
  border-radius: 16px;
  background: #fff;
  padding: 10px;
  margin: 10px 0 12px;
}

.mp-dialog-text {
  font-size: 13px;
  color: #a5b4fc;
  margin-bottom: 14px;
  line-height: 1.5;
}

.mp-close-btn {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  border: none;
  border-radius: 999px;
  padding: 7px 20px;
  font-size: 13px;
  color: white;
  cursor: pointer;
  box-shadow: 0 6px 18px rgba(37, 99, 235, 0.45);
}

.mp-close-btn:hover {
  opacity: 0.92;
}

/* 动画 */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 响应式 */
@media (max-width: 768px) {
  .grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding-top: 28px;
  }
}