/* 唐山市路北区激抗菌肥料厂 官网样式 */
:root {
  --green: #2e7d4f;
  --green-deep: #1e5a38;
  --green-light: #eaf5ee;
  --gold: #c9a35a;
  --ink: #22292b;
  --gray: #6b7578;
  --line: #e5eae7;
  --bg: #f7faf8;
  --radius: 14px;
  --shadow: 0 10px 30px rgba(30, 90, 56, 0.08);
}

* { 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(--ink);
  background: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo {
  width: 44px; height: 44px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--green), var(--green-deep));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 20px; font-weight: 700;
  letter-spacing: 1px;
}
.brand-text { line-height: 1.3; }
.brand-text strong { font-size: 16px; color: var(--ink); display: block; }
.brand-text span { font-size: 11px; color: var(--gray); letter-spacing: 2px; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  padding: 8px 18px;
  font-size: 15px;
  color: var(--ink);
  border-radius: 999px;
  transition: all .25s ease;
}
.nav a:hover { color: var(--green); background: var(--green-light); }
.nav a.active { color: #fff; background: var(--green); }
.nav .nav-tel {
  margin-left: 10px;
  padding: 8px 20px;
  border: 1px solid var(--green);
  color: var(--green);
  font-weight: 600;
}
.nav .nav-tel:hover { background: var(--green); color: #fff; }

.menu-toggle {
  display: none;
  background: none; border: none;
  width: 42px; height: 42px;
  cursor: pointer;
}
.menu-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--ink); margin: 5px auto;
  transition: .3s;
}

/* ---------- 首屏横幅 ---------- */
.hero {
  margin-top: 72px;
  position: relative;
  min-height: 560px;
  display: flex; align-items: center;
  background:
    radial-gradient(1200px 500px at 80% -10%, rgba(201, 163, 90, 0.15), transparent 60%),
    radial-gradient(900px 480px at 10% 110%, rgba(46, 125, 79, 0.25), transparent 60%),
    linear-gradient(120deg, #123322 0%, #1e5a38 55%, #2e7d4f 100%);
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}
.hero-content { position: relative; z-index: 2; padding: 96px 0; max-width: 720px; }
.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 4px;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.85);
}
.hero h1 { font-size: 46px; line-height: 1.25; font-weight: 700; margin-bottom: 20px; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero p { font-size: 17px; color: rgba(255,255,255,0.82); max-width: 560px; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
.btn {
  display: inline-block;
  padding: 13px 34px;
  border-radius: 999px;
  font-size: 15px;
  transition: all .25s ease;
}
.btn-primary { background: var(--gold); color: #2b2110; font-weight: 600; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(201,163,90,0.35); }
.btn-ghost { border: 1px solid rgba(255,255,255,0.5); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,0.12); }

/* ---------- 数据统计条 ---------- */
.stats { background: #fff; border-bottom: 1px solid var(--line); }
.stats-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding: 44px 0;
}
.stat-item { text-align: center; }
.stat-item .num { font-size: 36px; font-weight: 700; color: var(--green); }
.stat-item .num small { font-size: 16px; color: var(--gold); margin-left: 2px; }
.stat-item .label { font-size: 14px; color: var(--gray); margin-top: 4px; }

/* ---------- 通用区块 ---------- */
.section { padding: 96px 0; }
.section.alt { background: var(--bg); }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 56px; }
.section-kicker {
  font-size: 13px; letter-spacing: 6px; color: var(--gold);
  text-transform: uppercase; margin-bottom: 10px;
}
.section-title { font-size: 32px; font-weight: 700; color: var(--ink); }
.section-desc { margin-top: 14px; color: var(--gray); font-size: 15px; }

/* ---------- 卡片 ---------- */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 30px;
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: linear-gradient(90deg, var(--green), var(--gold));
  opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card:hover::before { opacity: 1; }
.card-icon {
  width: 58px; height: 58px;
  border-radius: 14px;
  background: var(--green-light);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px;
  margin-bottom: 22px;
}
.card h3 { font-size: 19px; margin-bottom: 12px; color: var(--ink); }
.card p { font-size: 14px; color: var(--gray); }

/* ---------- 关于预览 ---------- */
.about-preview { display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px; align-items: center; }
.about-visual {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 380px;
  background:
    radial-gradient(600px 300px at 30% 20%, rgba(201,163,90,0.2), transparent 60%),
    linear-gradient(150deg, #1e5a38, #2e7d4f);
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.9);
}
.about-visual .big { font-size: 64px; font-weight: 700; letter-spacing: 8px; }
.about-visual .sub { position: absolute; bottom: 28px; left: 0; right: 0; text-align: center; font-size: 13px; letter-spacing: 4px; color: rgba(255,255,255,0.65); }
.about-text h2 { font-size: 30px; margin-bottom: 8px; }
.about-text .kicker { color: var(--gold); font-size: 13px; letter-spacing: 6px; }
.about-text p { margin-top: 18px; color: var(--gray); font-size: 15px; }
.about-points { margin-top: 28px; display: grid; gap: 14px; }
.about-points li {
  list-style: none;
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 15px; color: var(--ink);
}
.about-points li::before {
  content: "";
  flex: 0 0 8px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gold);
  margin-top: 9px;
}
.about-text .btn { margin-top: 32px; background: var(--green); color: #fff; font-weight: 600; }
.about-text .btn:hover { background: var(--green-deep); }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  background: linear-gradient(110deg, #123322, #1e5a38 60%, #2e7d4f);
  color: #fff;
  padding: 72px 0;
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { font-size: 28px; margin-bottom: 8px; }
.cta-inner p { color: rgba(255,255,255,0.75); font-size: 15px; }
.cta-tel { font-size: 30px; font-weight: 700; color: var(--gold); letter-spacing: 1px; }

/* ---------- 页脚 ---------- */
.site-footer { background: #15201a; color: rgba(255,255,255,0.72); padding: 64px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.4fr; gap: 40px; padding-bottom: 48px; }
.footer-grid h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer-grid ul { list-style: none; display: grid; gap: 10px; font-size: 14px; }
.footer-grid ul a:hover { color: var(--gold); }
.footer-brand p { font-size: 14px; margin-top: 16px; max-width: 320px; color: rgba(255,255,255,0.55); }
.footer-contact li { display: flex; gap: 10px; font-size: 14px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.4);
}
.footer-bottom .beian {
  display: inline-block;
  margin-left: 12px;
  padding-left: 12px;
  border-left: 1px solid rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.55);
  transition: color .25s;
}
.footer-bottom .beian:hover { color: var(--gold); }

/* ---------- 内页页头 ---------- */
.page-hero {
  margin-top: 72px;
  padding: 88px 0;
  background: linear-gradient(120deg, #123322, #1e5a38 60%, #2e7d4f);
  color: #fff;
  text-align: center;
}
.page-hero h1 { font-size: 36px; margin-bottom: 10px; }
.page-hero p { color: rgba(255,255,255,0.75); font-size: 15px; letter-spacing: 2px; }
.breadcrumb { font-size: 13px; color: rgba(255,255,255,0.6); margin-top: 18px; }
.breadcrumb a:hover { color: var(--gold); }

/* ---------- 关于页 ---------- */
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.about-layout h2 { font-size: 26px; margin-bottom: 18px; color: var(--ink); }
.about-layout p { color: var(--gray); font-size: 15px; margin-bottom: 14px; }
.value-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.value-item {
  text-align: center;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 36px 20px;
  transition: all .3s;
}
.value-item:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.value-item .icon { font-size: 32px; margin-bottom: 14px; }
.value-item h3 { font-size: 17px; margin-bottom: 8px; }
.value-item p { font-size: 13px; color: var(--gray); }

/* ---------- 产品页 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.product-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all .3s ease;
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); }
.product-cover {
  height: 200px;
  display: flex; align-items: center; justify-content: center;
  font-size: 56px;
  color: rgba(255,255,255,0.95);
}
.cover-a { background: linear-gradient(135deg, #2e7d4f, #57a773); }
.cover-b { background: linear-gradient(135deg, #1e5a38, #3e8e5f); }
.cover-c { background: linear-gradient(135deg, #c9a35a, #a8813c); }
.cover-d { background: linear-gradient(135deg, #3f7d5d, #74b08c); }
.cover-e { background: linear-gradient(135deg, #2b5d3f, #4c8f67); }
.cover-f { background: linear-gradient(135deg, #6d8f3f, #9dbf62); }
.product-body { padding: 26px 26px 30px; flex: 1; display: flex; flex-direction: column; }
.product-body .tag {
  align-self: flex-start;
  font-size: 12px;
  color: var(--green);
  background: var(--green-light);
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: 12px;
}
.product-body h3 { font-size: 19px; margin-bottom: 10px; }
.product-body p { font-size: 14px; color: var(--gray); flex: 1; }
.product-body ul { list-style: none; margin: 16px 0 4px; display: grid; gap: 8px; }
.product-body ul li { font-size: 13px; color: var(--ink); display: flex; gap: 8px; align-items: baseline; }
.product-body ul li::before { content: "·"; color: var(--gold); font-weight: 700; }

/* ---------- 流程 ---------- */
.flow-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.flow-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  position: relative;
}
.flow-item .step {
  width: 46px; height: 46px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--green);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
}
.flow-item h3 { font-size: 16px; margin-bottom: 8px; }
.flow-item p { font-size: 13px; color: var(--gray); }

/* ---------- 联系页 ---------- */
.contact-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; align-items: start; }
.contact-info-card {
  background: linear-gradient(150deg, #1e5a38, #2e7d4f);
  border-radius: var(--radius);
  color: #fff;
  padding: 44px 38px;
}
.contact-info-card h2 { font-size: 24px; margin-bottom: 8px; }
.contact-info-card > p { color: rgba(255,255,255,0.75); font-size: 14px; margin-bottom: 30px; }
.info-row { display: flex; gap: 16px; padding: 18px 0; border-top: 1px solid rgba(255,255,255,0.15); }
.info-row .icon { font-size: 20px; }
.info-row strong { display: block; font-size: 14px; color: rgba(255,255,255,0.65); font-weight: 400; margin-bottom: 2px; }
.info-row span { font-size: 17px; }
.info-row .tel-big { font-size: 24px; font-weight: 700; color: var(--gold); letter-spacing: 1px; }

.contact-form {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 44px 38px;
}
.contact-form h2 { font-size: 24px; margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; margin-bottom: 8px; color: var(--ink); }
.form-group label i { color: #c0392b; font-style: normal; }
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 14px;
  font-family: inherit;
  background: var(--bg);
  transition: border .25s;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { outline: none; border-color: var(--green); background: #fff; }
.form-group textarea { resize: vertical; min-height: 110px; }
.form-submit {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 999px;
  background: var(--green);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background .25s;
}
.form-submit:hover { background: var(--green-deep); }
.form-note { font-size: 12px; color: var(--gray); margin-top: 14px; text-align: center; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .card-grid, .product-grid, .value-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-inner { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .about-preview, .about-layout, .contact-layout { grid-template-columns: 1fr; }
  .flow-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 34px; }
}
@media (max-width: 640px) {
  .nav {
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--line);
    transform: translateY(-130%);
    transition: transform .3s ease;
    box-shadow: 0 20px 30px rgba(0,0,0,0.06);
  }
  .nav.open { transform: translateY(0); }
  .nav a { text-align: center; }
  .nav .nav-tel { margin: 8px 0 0; text-align: center; }
  .menu-toggle { display: block; }
  .card-grid, .product-grid, .value-grid, .flow-grid, .form-row { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  .hero h1 { font-size: 28px; }
  .section-title { font-size: 26px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .contact-form, .contact-info-card { padding: 32px 24px; }
  .footer-bottom .beian {
    display: block;
    margin: 8px 0 0;
    padding-left: 0;
    border-left: none;
  }
}