/* 汇晶环保官网 - 前台样式 */
:root {
  --green: #1e9e6a;
  --green-dark: #157a50;
  --green-light: #e6f5ee;
  --text: #2b333b;
  --text-light: #6b7680;
  --bg: #ffffff;
  --bg-gray: #f6f8f7;
  --radius: 10px;
  --shadow: 0 4px 18px rgba(20, 80, 55, .08);
  --maxw: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.7; font-size: 16px;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- 顶栏 ---------- */
.topbar { background: var(--green-dark); color: #cfe9dc; font-size: 13px; }
.topbar .wrap { display: flex; justify-content: space-between; padding: 6px 20px; }
.header { position: sticky; top: 0; z-index: 100; background: #fff; box-shadow: 0 1px 8px rgba(0,0,0,.06); }
.header .wrap { display: flex; align-items: center; justify-content: space-between; height: 74px; flex-wrap: nowrap; }
.logo { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.logo img { height: 52px; width: auto; }
.logo .name { font-size: 22px; font-weight: 700; color: var(--green-dark); letter-spacing: 2px; white-space: nowrap; }
.logo .sub { font-size: 11px; color: var(--text-light); letter-spacing: .5px; white-space: nowrap; }
.nav { display: flex; gap: 2px; flex: 1 1 auto; justify-content: flex-end; flex-wrap: nowrap; overflow: hidden; }
.nav a { padding: 8px 14px; border-radius: 6px; font-size: 16px; color: var(--text); transition: .2s; white-space: nowrap; }
.nav a:hover, .nav a.on { color: #fff; background: var(--green); }
.menu-btn { display: none; background: none; border: none; font-size: 26px; color: var(--green-dark); cursor: pointer; flex: 0 0 auto; }

/* 中等宽度：隐藏英文副标题，压缩导航 */
@media (max-width: 1240px) {
  .logo .sub { display: none; }
  .logo img { height: 46px; }
  .logo .name { font-size: 20px; }
  .nav a { padding: 8px 10px; font-size: 15px; }
}

/* ---------- Banner 轮播 ---------- */
.banner { position: relative; height: 480px; overflow: hidden; background: var(--green-dark); }
.banner .slide { position: absolute; inset: 0; opacity: 0; transition: opacity .8s; }
.banner .slide.cur { opacity: 1; }
.banner .slide img { width: 100%; height: 100%; object-fit: cover; }
.banner .slide .cap {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  color: #fff; text-align: center; text-shadow: 0 2px 14px rgba(0,0,0,.45); width: 90%;
}
.banner .cap h2 { font-size: 42px; letter-spacing: 6px; margin-bottom: 10px; }
.banner .cap p { font-size: 18px; opacity: .92; letter-spacing: 2px; }
.dots { position: absolute; bottom: 18px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; }
.dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.5); cursor: pointer; transition: .3s; }
.dots i.cur { background: #fff; width: 26px; border-radius: 6px; }

/* ---------- 通用区块 ---------- */
.section { padding: 70px 0; }
.section.gray { background: var(--bg-gray); }
.sec-head { text-align: center; margin-bottom: 44px; }
.sec-head h2 { font-size: 30px; color: var(--text); }
.sec-head h2 b { color: var(--green); }
.sec-head .line { width: 56px; height: 4px; background: var(--green); border-radius: 2px; margin: 14px auto 12px; }
.sec-head p { color: var(--text-light); font-size: 15px; }

/* 首页简介 */
.intro { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; align-items: center; }
.intro .txt h3 { font-size: 24px; margin-bottom: 16px; }
.intro .txt p { color: var(--text-light); margin-bottom: 14px; text-align: justify; }
.intro .stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 24px; }
.intro .stat { background: var(--green-light); border-radius: var(--radius); padding: 18px 8px; text-align: center; }
.intro .stat b { display: block; font-size: 26px; color: var(--green-dark); }
.intro .stat span { font-size: 13px; color: var(--text-light); }
.intro .pic { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.intro .pic img { width: 100%; height: 360px; object-fit: cover; }

/* 服务卡片 */
.grid { display: grid; gap: 24px; }
.g4 { grid-template-columns: repeat(4, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g2 { grid-template-columns: repeat(2, 1fr); }
.card {
  background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  transition: transform .25s, box-shadow .25s; display: block;
}
.card:hover { transform: translateY(-6px); box-shadow: 0 12px 28px rgba(20, 80, 55, .14); }
.card .thumb { height: 200px; background: var(--green-light); overflow: hidden; }
.card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.card:hover .thumb img { transform: scale(1.05); }
.card .body { padding: 20px; }
.card .body h3 { font-size: 18px; margin-bottom: 8px; }
.card .body p { font-size: 14px; color: var(--text-light); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.card .more { display: inline-block; margin-top: 12px; color: var(--green); font-size: 14px; }

/* 新闻 */
.news-item { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px solid #edf1ef; }
.news-item .date {
  flex: 0 0 74px; height: 74px; background: var(--green-light); border-radius: var(--radius);
  display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--green-dark);
}
.news-item .date b { font-size: 24px; line-height: 1.1; }
.news-item .date span { font-size: 12px; }
.news-item h3 { font-size: 17px; margin-bottom: 6px; }
.news-item p { font-size: 14px; color: var(--text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-item:hover h3 { color: var(--green); }

/* 资质横排 */
.honor-row { display: flex; gap: 20px; overflow-x: auto; padding-bottom: 8px; }
.honor-card { flex: 0 0 220px; }
.honor-card img { height: 160px; width: 100%; object-fit: cover; border-radius: var(--radius); box-shadow: var(--shadow); background: #fff; }
.honor-card p { text-align: center; font-size: 14px; margin-top: 10px; color: var(--text-light); }

/* 详情页 */
.page-hero { background: linear-gradient(120deg, var(--green-dark), var(--green)); color: #fff; padding: 56px 0; text-align: center; }
.page-hero h1 { font-size: 32px; letter-spacing: 3px; }
.crumbs { font-size: 13px; color: var(--text-light); padding: 16px 0; }
.crumbs a { color: var(--green); }
.detail { max-width: 860px; margin: 0 auto; }
.detail .d-head { text-align: center; border-bottom: 1px solid #edf1ef; padding-bottom: 20px; margin-bottom: 26px; }
.detail h1 { font-size: 26px; margin-bottom: 10px; }
.detail .meta { font-size: 13px; color: var(--text-light); }
.detail .content { font-size: 16px; color: #38424a; }
.detail .content img { border-radius: 8px; margin: 14px auto; }
.detail .content p { margin: 12px 0; text-align: justify; }
.back-btn { display: inline-block; margin: 40px 0 60px; padding: 10px 26px; border: 1px solid var(--green); color: var(--green); border-radius: 24px; }
.back-btn:hover { background: var(--green); color: #fff; }
.d-nav { display: flex; justify-content: space-between; gap: 16px; margin-top: 36px; padding-top: 20px; border-top: 1px dashed #dfe6e2; flex-wrap: wrap; }
.d-nav-item { flex: 1 1 260px; font-size: 14px; color: var(--text-light); padding: 10px 14px; border-radius: 8px; background: var(--bg-gray); }
a.d-nav-item:hover { background: var(--green-light); color: var(--green-dark); }
.d-nav-item.off { opacity: .55; }

/* 返回顶部 */
#toTop { position: fixed; right: 26px; bottom: 40px; width: 46px; height: 46px; border-radius: 50%; border: none; background: var(--green); color: #fff; font-size: 20px; cursor: pointer; box-shadow: 0 6px 18px rgba(21,122,80,.3); opacity: 0; pointer-events: none; transition: .3s; z-index: 99; }
#toTop.show { opacity: 1; pointer-events: auto; }
#toTop:hover { background: var(--green-dark); }

/* 服务大列表 */
.svc-item { display: flex; gap: 26px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; margin-bottom: 26px; }
.svc-item .pic { flex: 0 0 320px; min-height: 210px; }
.svc-item .pic img { width: 100%; height: 100%; object-fit: cover; }
.svc-item .txt { padding: 24px 26px; flex: 1; }
.svc-item .txt h3 { font-size: 20px; margin-bottom: 10px; color: var(--green-dark); }
.svc-item .txt p { color: var(--text-light); font-size: 15px; }

/* 关于我们 */
.about-body { max-width: 860px; margin: 0 auto; font-size: 16px; }
.about-body p { margin: 12px 0; text-align: justify; }
.honor-grid { margin-top: 40px; }

/* 联系我们 */
.contact-grid { display: grid; grid-template-columns: 1fr 1.2fr; gap: 40px; }
.c-info .row { display: flex; gap: 14px; margin-bottom: 20px; align-items: flex-start; }
.c-info .ico { flex: 0 0 44px; height: 44px; border-radius: 50%; background: var(--green-light); color: var(--green-dark); display: flex; align-items: center; justify-content: center; font-size: 20px; }
.c-info b { display: block; font-size: 15px; }
.c-info span { color: var(--text-light); font-size: 14px; }
.form label { display: block; font-size: 14px; margin: 14px 0 6px; color: var(--text); }
.form input, .form textarea {
  width: 100%; padding: 12px 14px; border: 1px solid #dfe6e2; border-radius: 8px; font-size: 15px;
  font-family: inherit; outline: none; transition: border .2s;
}
.form input:focus, .form textarea:focus { border-color: var(--green); }
.form textarea { min-height: 140px; resize: vertical; }
.btn {
  display: inline-block; background: var(--green); color: #fff; border: none; border-radius: 8px;
  padding: 12px 34px; font-size: 16px; cursor: pointer; transition: .2s; font-family: inherit;
}
.btn:hover { background: var(--green-dark); }
.btn-lite { background: #fff; color: var(--green); border: 1px solid var(--green); }
.ok-tip { background: var(--green-light); color: var(--green-dark); border-radius: 8px; padding: 12px 16px; margin-bottom: 14px; font-size: 14px; }

/* ---------- 页脚 ---------- */
.footer { background: #17342a; color: #9db8ad; margin-top: 0; }
.footer .wrap { padding: 46px 20px 26px; }
.f-grid { display: grid; grid-template-columns: 2fr 1fr 1.4fr; gap: 40px; padding-bottom: 30px; border-bottom: 1px solid #24463a; }
.f-grid h4 { color: #fff; font-size: 17px; margin-bottom: 14px; }
.f-grid a, .f-grid p { font-size: 14px; margin-bottom: 8px; display: block; color: #9db8ad; }
.f-grid a:hover { color: #fff; }
.f-bottom { text-align: center; font-size: 13px; padding-top: 20px; }
.f-bottom a { color: #9db8ad; }
.f-bottom a:hover { color: #fff; text-decoration: underline; }

/* 列表空态 */
.empty { text-align: center; color: var(--text-light); padding: 60px 0; }

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .topbar { display: none; }
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; top: 74px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 10px 20px 16px; box-shadow: 0 8px 16px rgba(0,0,0,.08); }
  .nav.open { display: flex; }
  .banner { height: 300px; }
  .banner .cap h2 { font-size: 26px; }
  .intro, .contact-grid, .g4, .g3, .g2 { grid-template-columns: 1fr; }
  .section { padding: 46px 0; }
  .svc-item { flex-direction: column; }
  .svc-item .pic { flex: none; height: 200px; }
  .f-grid { grid-template-columns: 1fr; gap: 24px; }
  .logo img { height: 42px; }
  .logo .name { font-size: 18px; }
}