:root {
  --primary: #0e9f6e;
  --primary-dark: #046c4e;
  --primary-light: #def7ec;
  --deep: #0b3b2e;
  --text: #1f2937;
  --text-light: #6b7280;
  --bg: #ffffff;
  --bg-gray: #f6faf8;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(4, 108, 78, .10);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { width: min(1160px, 92%); margin: 0 auto; }

/* ===== 导航 ===== */
header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(14,159,110,.12);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; }
.logo-mark {
  width: 38px; height: 38px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #10b3a3);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 18px; font-weight: 800;
}
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-text b { font-size: 17px; color: var(--deep); }
.logo-text span { font-size: 11px; color: var(--text-light); letter-spacing: 1px; }
.nav-links { display: flex; gap: 30px; font-size: 15px; }
.nav-links a { color: var(--text); position: relative; padding: 6px 0; }
.nav-links a:hover { color: var(--primary); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 0; height: 2px; background: var(--primary); transition: width .25s;
}
.nav-links a:hover::after { width: 100%; }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after { width: 100%; }
.nav-cta {
  background: var(--primary); color: #fff !important;
  padding: 9px 22px; border-radius: 999px; font-size: 14px;
  transition: background .2s;
}
.nav-cta:hover { background: var(--primary-dark); }
.nav-cta::after { display: none; }
.nav-cta.active::after { display: none; }
.menu-btn { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-btn svg { width: 26px; height: 26px; stroke: var(--deep); }

/* ===== 首页 Hero + 轮播 ===== */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, var(--deep) 0%, #0a5c46 55%, #0e9f6e 130%);
  color: #fff;
  padding: 90px 0 110px;
}
.hero::before {
  content: ""; position: absolute; border-radius: 50%;
  width: 480px; height: 480px; right: -120px; top: -160px;
  background: radial-gradient(circle, rgba(255,255,255,.10), transparent 70%);
}
.hero::after {
  content: ""; position: absolute; border-radius: 50%;
  width: 360px; height: 360px; left: -100px; bottom: -180px;
  background: radial-gradient(circle, rgba(56,224,160,.18), transparent 70%);
}
.hero-flex {
  position: relative; z-index: 2;
  display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center;
}
.hero-tag {
  display: inline-block; font-size: 13px; letter-spacing: 2px;
  background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.25);
  padding: 5px 16px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(28px, 4.2vw, 42px); line-height: 1.3; margin-bottom: 18px; }
.hero h1 em { font-style: normal; color: #7cf0c8; }
.hero p { font-size: 16.5px; color: rgba(255,255,255,.85); margin-bottom: 34px; }
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 34px; border-radius: 999px;
  font-size: 15px; transition: all .2s; border: none; cursor: pointer;
}
.btn-primary { background: #fff; color: var(--primary-dark); font-weight: 600; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,.18); }
.btn-green { background: var(--primary); color: #fff; font-weight: 600; }
.btn-green:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-ghost { border: 1px solid rgba(255,255,255,.55); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }

/* 轮播 */
.carousel {
  position: relative; border-radius: 18px; overflow: hidden;
  box-shadow: 0 24px 60px rgba(0,0,0,.35);
  aspect-ratio: 3 / 2;
}
.carousel .slide {
  position: absolute; inset: 0; opacity: 0;
  transition: opacity .8s ease;
}
.carousel .slide.on { opacity: 1; }
.carousel .slide img { width: 100%; height: 100%; object-fit: cover; }
.carousel .cap {
  position: absolute; left: 0; right: 0; bottom: 0;
  background: linear-gradient(transparent, rgba(4,44,33,.82));
  color: #fff; padding: 34px 20px 14px; font-size: 14.5px;
}
.carousel .dots {
  position: absolute; bottom: 12px; right: 16px; display: flex; gap: 8px; z-index: 3;
}
.carousel .dots button {
  width: 9px; height: 9px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(255,255,255,.45); transition: all .25s; padding: 0;
}
.carousel .dots button.on { background: #fff; width: 22px; border-radius: 999px; }
.carousel .arrow {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
  width: 36px; height: 36px; border-radius: 50%; border: none; cursor: pointer;
  background: rgba(0,0,0,.28); color: #fff; font-size: 17px; line-height: 1;
  display: flex; align-items: center; justify-content: center; transition: background .2s;
}
.carousel .arrow:hover { background: rgba(0,0,0,.5); }
.carousel .prev { left: 10px; }
.carousel .next { right: 10px; }

/* ===== 子页 Banner ===== */
.page-banner {
  background: linear-gradient(135deg, var(--deep) 0%, #0a5c46 60%, #0e9f6e 140%);
  color: #fff; text-align: center; padding: 76px 0;
}
.page-banner h1 { font-size: clamp(26px, 3.6vw, 36px); }
.page-banner .crumb { font-size: 13.5px; color: rgba(255,255,255,.72); margin-top: 10px; letter-spacing: 1px; }

/* ===== 通用 section ===== */
section { padding: 90px 0; }
.sec-head { text-align: center; margin-bottom: 56px; }
.sec-head .kicker {
  display: inline-block; font-size: 13px; letter-spacing: 3px;
  color: var(--primary); font-weight: 600; margin-bottom: 10px;
}
.sec-head h2 { font-size: clamp(24px, 3.4vw, 34px); color: var(--deep); }
.sec-head p { color: var(--text-light); margin-top: 12px; max-width: 640px; margin-left: auto; margin-right: auto; }
.sec-line { width: 56px; height: 4px; border-radius: 2px; background: var(--primary); margin: 18px auto 0; }
.bg-gray { background: var(--bg-gray); }

/* ===== 关于 / 图文 ===== */
.about-grid { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.about-text h3 { font-size: 22px; color: var(--deep); margin-bottom: 16px; }
.about-text p { color: var(--text-light); margin-bottom: 14px; text-align: justify; }
.about-text p:last-child { margin-bottom: 0; }
.figure { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.figure img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 4 / 3; }

/* ===== 统计 ===== */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 64px; }
.stat {
  background: #fff; border-radius: var(--radius); text-align: center;
  padding: 28px 12px; box-shadow: var(--shadow);
}
.stat .num { font-size: 32px; font-weight: 800; color: var(--primary); }
.stat .num small { font-size: 15px; font-weight: 600; }
.stat .label { font-size: 14px; color: var(--text-light); margin-top: 6px; }

/* ===== 产品 ===== */
.products-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.card {
  background: #fff; border: 1px solid #eef3f0; border-radius: var(--radius);
  padding: 34px 28px; transition: all .25s; position: relative; overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: rgba(14,159,110,.35); }
.card-icon {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--primary-light); display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px;
}
.card-icon svg { width: 30px; height: 30px; stroke: var(--primary-dark); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 18px; color: var(--deep); margin-bottom: 10px; }
.card p { font-size: 14.5px; color: var(--text-light); }
.card .tag-row { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 12px; color: var(--primary-dark); background: var(--primary-light);
  padding: 3px 10px; border-radius: 999px;
}

/* ===== 优势 ===== */
.adv { background: var(--deep); color: #fff; }
.adv .sec-head h2 { color: #fff; }
.adv .sec-head p { color: rgba(255,255,255,.7); }
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.adv-item {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12);
  border-radius: var(--radius); padding: 30px 24px; transition: background .25s;
}
.adv-item:hover { background: rgba(255,255,255,.12); }
.adv-item .no { font-size: 14px; color: #7cf0c8; font-weight: 700; letter-spacing: 1px; }
.adv-item h3 { font-size: 17px; margin: 10px 0 8px; }
.adv-item p { font-size: 14px; color: rgba(255,255,255,.72); }

/* ===== 荣誉 ===== */
.honor-wrap {
  display: flex; gap: 30px; align-items: center;
  background: linear-gradient(120deg, var(--primary-light), #f0fdf7);
  border: 1px solid rgba(14,159,110,.2);
  border-radius: var(--radius); padding: 40px 44px;
}
.honor-badge {
  flex: 0 0 auto; width: 92px; height: 92px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #10b3a3);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 8px 22px rgba(14,159,110,.35);
}
.honor-badge svg { width: 44px; height: 44px; stroke: #fff; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.honor-wrap h3 { font-size: 19px; color: var(--deep); margin-bottom: 8px; }
.honor-wrap p { color: var(--text-light); font-size: 15px; }

/* ===== 联系 ===== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-info li {
  display: flex; gap: 14px; padding: 16px 0; border-bottom: 1px dashed #e5ece9; font-size: 15px;
}
.contact-info .ico {
  flex: 0 0 auto; width: 42px; height: 42px; border-radius: 10px;
  background: var(--primary-light); display: flex; align-items: center; justify-content: center;
}
.contact-info .ico svg { width: 22px; height: 22px; stroke: var(--primary-dark); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.contact-info b { display: block; color: var(--deep); font-size: 14px; margin-bottom: 2px; }
.contact-info span { color: var(--text-light); }
.contact-box {
  background: var(--bg-gray); border-radius: var(--radius); padding: 34px 30px;
  border: 1px solid #e8f0ec;
}
.contact-box h3 { color: var(--deep); font-size: 18px; margin-bottom: 10px; }
.contact-box p { color: var(--text-light); font-size: 14.5px; margin-bottom: 22px; }
.contact-box .btn { width: 100%; text-align: center; }

/* ===== 页脚 ===== */
footer { background: #08281f; color: rgba(255,255,255,.65); padding: 46px 0 30px; font-size: 14px; }
.foot-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; margin-bottom: 34px; }
.foot-brand b { color: #fff; font-size: 16px; display: block; margin-bottom: 10px; }
.foot-brand p { max-width: 340px; }
.foot-links { display: flex; gap: 60px; flex-wrap: wrap; }
.foot-links h4 { color: #fff; font-size: 15px; margin-bottom: 12px; }
.foot-links li { margin-bottom: 8px; }
.foot-links a:hover { color: #7cf0c8; }
.foot-bottom {
  border-top: 1px solid rgba(255,255,255,.12); padding-top: 22px;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: 13px;
}
.foot-bottom a:hover { color: #7cf0c8; }

/* ===== 响应式 ===== */
@media (max-width: 960px) {
  .hero-flex { grid-template-columns: 1fr; gap: 40px; }
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links {
    display: none; position: absolute; top: 68px; left: 0; right: 0;
    background: #fff; flex-direction: column; gap: 0;
    border-bottom: 1px solid #e5ece9; padding: 8px 4%;
    box-shadow: 0 12px 24px rgba(0,0,0,.08);
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 13px 0; border-bottom: 1px solid #f1f5f3; }
  .nav-cta { border: none; }
  .menu-btn { display: block; }
  .honor-wrap { flex-direction: column; text-align: center; padding: 34px 24px; }
}
@media (max-width: 560px) {
  .products-grid, .stats, .adv-grid { grid-template-columns: 1fr; }
  section { padding: 64px 0; }
  .hero { padding: 60px 0 80px; }
}