:root {
  --maxw: 1200px;
  --text: #333333;
  --heading: #1a1a1a;
  --footer-bg: #011430;
  --footer-text: rgba(255, 255, 255, .78);
}

.img100 {
  width: 100%;
  display: block;
}

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

html {
  scroll-behavior: smooth
}

body {
  font-family: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

img {
  max-width: 100%;
  display: block
}

.wrap {
  width: var(--maxw);
  max-width: 92%;
  margin: 0 auto
}

/* ---------- 占位图 ---------- */
.ph {

}

.ph::before {
  content: attr(data-ph)
}

/* ---------- Hero ---------- */
.hero {
  width: 100%;
  height: 520px;
  background: url("../../assets/img/home-bg.png") no-repeat;
  background-size: cover;
  position: relative;
}

/* ---------- 内容区 ---------- */
.content {
  padding: 72px 0 96px
}

.page-title {
  font-size: 34px;
  font-weight: 700;
  color: var(--heading);
  text-align: center;
  margin-bottom: 42px;
  line-height: 1.25;
}

.article {
  max-width: var(--maxw);
  margin: 0 auto
}

.article h2 {
  font-size: 18px;
  font-weight: 700;
  color: var(--heading);
  margin-bottom: 18px;
  line-height: 1.4;
}

.article p {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  margin-bottom: 20px;
  text-align: justify;
}

.article .lead {
  margin-bottom: 34px
}

.article .section-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--heading);
  margin: 28px 0 10px;
  display: block;
}

/* ---------- Footer ---------- */
footer {
  background: var(--footer-bg);
  padding: 62px 0 0;
  color: #fff
}

.ft__grid {
  display: grid;
  grid-template-columns:1.3fr .9fr .9fr 1.4fr;
  gap: 48px;
  padding-bottom: 58px;
}

.ft__brand .brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 18px;
  color: #00A6E0;
}

.ft__brand .brand .logo-ph {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ft__brand p {
  font-size: 14px;
  line-height: 1.55;
  color: var(--footer-text);
  max-width: 260px;
}

.ft__col h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 20px;
  color: #fff;
}

.ft__col ul {
  list-style: none
}

.ft__col li {
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 14px;
  color: var(--footer-text)
}

.ft__col a:hover {
  color: #fff;
  text-decoration: underline
}

.ft__contact li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 16px
}

.ft__contact .icon-ph {
  width: 20px;
  height: 20px;
  flex: none;
  border-radius: 4px;
  background: rgba(255, 255, 255, .15);
  margin-top: 2px;
}

.ft__bot {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, .5);
}

/* ---------- 响应式（内容区块专属；容器/导航/页脚的折叠由 responsive.css 统一提供） ---------- */
@media (max-width: 768px) {
  .hero {
    height: 320px
  }

  .content {
    padding: 46px 0 64px
  }

  .page-title {
    font-size: 26px;
    margin-bottom: 30px
  }

  .article h2 {
    font-size: 17px
  }

  .article p {
    font-size: 15px;
    line-height: 1.7
  }
}

@media (max-width: 480px) {
  .hero {
    height: 260px
  }

  .page-title {
    font-size: 24px
  }
}