/* ============================================================
   山东连云山混凝土有限公司 官网样式
   ============================================================ */

:root {
  --brand: #0d3b66;
  --brand-dark: #082a4a;
  --brand-2: #17568f;
  --accent: #ff7a18;
  --accent-2: #ffb020;
  --ink: #1b2733;
  --ink-2: #33465c;
  --muted: #6b7a8d;
  --bg: #ffffff;
  --bg-soft: #f4f7fa;
  --bg-soft-2: #eaf0f6;
  --line: #e3e9f0;
  --radius: 14px;
  --shadow-sm: 0 4px 16px rgba(13, 59, 102, .06);
  --shadow: 0 12px 34px rgba(13, 59, 102, .10);
  --shadow-lg: 0 22px 60px rgba(13, 59, 102, .16);
  --max: 1200px;
  --font: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.75;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

/* 图片防下载：禁止拖拽与选中（配合 main.js 禁用右键“图片另存为”） */
img {
  -webkit-user-drag: none;
  -khtml-user-drag: none;
  -moz-user-drag: none;
  -o-user-drag: none;
  user-drag: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  user-select: none;
  pointer-events: auto;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }

.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部条 ---------- */
.topbar {
  background: var(--brand-dark);
  color: rgba(255, 255, 255, .72);
  font-size: 12.5px;
}
.topbar .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 38px; gap: 16px;
}
.topbar span { display: inline-flex; align-items: center; gap: 6px; }
.topbar .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }
.topbar-right { display: flex; gap: 18px; }
.topbar-right a:hover { color: #fff; }

/* ---------- 导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header .container {
  height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.logo { display: flex; align-items: center; gap: 12px; }
.logo-mark { width: 46px; height: 46px; flex: none; }
.logo-text strong {
  display: block; font-size: 18px; letter-spacing: .5px; color: var(--brand);
  line-height: 1.25; font-weight: 700;
}
.logo-text span {
  display: block; font-size: 10.5px; letter-spacing: 2.4px;
  color: var(--muted); text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav > li { position: relative; }
.nav > li > a {
  display: block; padding: 10px 16px; font-size: 15px; color: var(--ink-2);
  border-radius: 8px; transition: .22s; font-weight: 500;
}
.nav > li > a:hover { color: var(--brand); background: var(--bg-soft-2); }
.nav > li.active > a { color: var(--accent); }
.nav > li.active > a::after {
  content: ""; position: absolute; left: 16px; right: 16px; bottom: 2px;
  height: 2px; background: var(--accent); border-radius: 2px;
}
.nav li.has-menu > a::before {
  content: ""; position: absolute; right: 6px; top: 50%; margin-top: -2px;
  border: 4px solid transparent; border-top-color: var(--muted);
}
.submenu {
  position: absolute; top: 100%; left: 50%; transform: translate(-50%, 8px);
  min-width: 168px; background: #fff; border: 1px solid var(--line);
  border-radius: 12px; box-shadow: var(--shadow); padding: 8px;
  opacity: 0; visibility: hidden; transition: .22s;
}
.nav li.has-menu:hover .submenu { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.submenu a {
  display: block; padding: 9px 14px; border-radius: 8px; font-size: 14px; color: var(--ink-2);
}
.submenu a:hover { background: var(--bg-soft-2); color: var(--brand); }

.header-cta { display: flex; align-items: center; gap: 14px; }
.header-phone { display: flex; align-items: center; gap: 8px; }
.header-phone .num { font-size: 19px; font-weight: 700; color: var(--brand); letter-spacing: .3px; }
.header-phone .lbl { font-size: 11.5px; color: var(--muted); line-height: 1.2; }

.nav-toggle {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line);
  background: #fff; border-radius: 10px; cursor: pointer; padding: 11px 10px;
}
.nav-toggle i { display: block; height: 2px; background: var(--brand); border-radius: 2px; }
.nav-toggle i + i { margin-top: 5px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 26px; border-radius: 999px; font-size: 15px; font-weight: 600;
  border: 1px solid transparent; cursor: pointer; transition: .22s; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 20px rgba(255, 122, 24, .28); }
.btn-primary:hover { background: #ef6a08; transform: translateY(-2px); box-shadow: 0 12px 26px rgba(255, 122, 24, .34); }
.btn-outline { border-color: rgba(255, 255, 255, .5); color: #fff; }
.btn-outline:hover { background: #fff; color: var(--brand); }
.btn-dark { background: var(--brand); color: #fff; }
.btn-dark:hover { background: var(--brand-2); transform: translateY(-2px); }
.btn-line { border-color: var(--line); color: var(--brand); background: #fff; }
.btn-line:hover { border-color: var(--brand); background: var(--bg-soft); }
.btn-sm { padding: 9px 18px; font-size: 14px; }

/* ---------- 首屏 ---------- */
.hero { position: relative; overflow: hidden; background: var(--brand-dark); color: #fff; }
.hero-bg { position: absolute; inset: 0; }
.hero-bg svg { width: 100%; height: 100%; }
.hero::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 160px;
  background: linear-gradient(to bottom, rgba(8, 42, 74, 0), rgba(8, 42, 74, .55));
}
.hero .container { position: relative; z-index: 3; padding-top: 92px; padding-bottom: 92px; }
.hero-inner { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px; padding: 6px 14px;
  background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 999px; font-size: 13px; letter-spacing: .5px; margin-bottom: 22px;
}
.hero h1 { font-size: 48px; line-height: 1.28; font-weight: 800; letter-spacing: 1px; }
.hero h1 em { font-style: normal; color: var(--accent-2); }
.hero p.lead {
  margin-top: 20px; font-size: 16.5px; color: rgba(255, 255, 255, .78);
  max-width: 560px; line-height: 1.9;
}
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-tags { margin-top: 30px; display: flex; gap: 10px; flex-wrap: wrap; }
.hero-tags span {
  font-size: 13px; padding: 5px 13px; border-radius: 6px;
  background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .16);
  color: rgba(255, 255, 255, .85);
}

.hero-card {
  background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .2);
  border-radius: 18px; padding: 26px; backdrop-filter: blur(8px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, .22);
}
.hero-card h3 { font-size: 16px; font-weight: 600; margin-bottom: 4px; }
.hero-card .sub { font-size: 12.5px; color: rgba(255, 255, 255, .6); margin-bottom: 18px; }
.hero-card ul { display: grid; gap: 12px; }
.hero-card li {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 14px; background: rgba(255, 255, 255, .08);
  border-radius: 10px; font-size: 14px;
}
.hero-card li b { color: var(--accent-2); font-size: 15px; }

/* ---------- 数据条 ---------- */
.stats { background: var(--brand); color: #fff; }
.stats .container { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat-item { padding: 34px 10px; text-align: center; border-right: 1px solid rgba(255, 255, 255, .12); }
.stat-item:last-child { border-right: 0; }
.stat-item .num { font-size: 38px; font-weight: 800; letter-spacing: .5px; }
.stat-item .num i { font-style: normal; font-size: 18px; font-weight: 600; margin-left: 3px; }
.stat-item .lbl { font-size: 13.5px; color: rgba(255, 255, 255, .72); margin-top: 4px; }

/* ---------- 通用区块 ---------- */
.section { padding: 84px 0; }
.section-soft { background: var(--bg-soft); }
.section-head { max-width: 720px; margin: 0 auto 52px; text-align: center; }
.eyebrow {
  display: inline-block; font-size: 13px; letter-spacing: 2px; color: var(--accent);
  font-weight: 700; margin-bottom: 12px;
}
.section-head h2 { font-size: 32px; font-weight: 800; color: var(--brand); letter-spacing: .5px; line-height: 1.4; }
.section-head p { margin-top: 14px; color: var(--muted); font-size: 15.5px; }
.section-head.left { margin-left: 0; text-align: left; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* ---------- 关于摘要 ---------- */
.about-visual { position: relative; }
.about-visual .frame {
  border-radius: 18px; overflow: hidden; box-shadow: var(--shadow-lg);
  background: linear-gradient(140deg, #17568f, #0d3b66);
  aspect-ratio: 4 / 3.2;
}
.about-visual .badge {
  position: absolute; left: -18px; bottom: -18px; background: #fff;
  border-radius: 14px; padding: 18px 22px; box-shadow: var(--shadow);
  display: flex; align-items: center; gap: 14px;
}
.about-visual .badge b { font-size: 30px; color: var(--accent); line-height: 1; }
.about-visual .badge span { font-size: 13px; color: var(--muted); }
.feature-list { margin-top: 26px; display: grid; gap: 16px; }
.feature-list li { display: flex; gap: 14px; }
.feature-list .ic {
  width: 40px; height: 40px; flex: none; border-radius: 11px;
  background: var(--bg-soft-2); display: grid; place-items: center; color: var(--brand);
}
.feature-list h4 { font-size: 15.5px; margin-bottom: 2px; }
.feature-list p { font-size: 14px; color: var(--muted); }

/* ---------- 卡片 ---------- */
.card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: .26s; display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: #d5e0ec; }
.card-thumb { aspect-ratio: 16 / 10; position: relative; overflow: hidden; }
.card-thumb svg { width: 100%; height: 100%; }
.card-body { padding: 22px; flex: 1; display: flex; flex-direction: column; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.tag-cloud span {
  padding: 9px 20px; border-radius: 999px; font-size: 14.5px; font-weight: 600;
  background: #fff; border: 1px solid var(--line); color: var(--ink-2);
  box-shadow: 0 2px 8px rgba(13,59,102,.05);
}
.tag-cloud span:nth-child(3n+1) { color: var(--brand); }
.tag-cloud span:nth-child(3n+2) { color: var(--accent); }
.card .ic {
  width: 48px; height: 48px; margin-bottom: 14px; border-radius: 13px;
  background: rgba(255,122,24,.1); color: var(--accent);
  display: grid; place-items: center;
}
.card-body h3 { font-size: 17.5px; margin-bottom: 8px; color: var(--brand); }
.card-body p { font-size: 14.2px; color: var(--muted); flex: 1; }
.tag-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.tag {
  font-size: 12px; padding: 3px 10px; border-radius: 5px;
  background: var(--bg-soft-2); color: var(--brand-2);
}
.card-link {
  margin-top: 16px; font-size: 14px; color: var(--accent); font-weight: 600;
  display: inline-flex; align-items: center; gap: 6px;
}
.card-link:hover { gap: 10px; }

/* ---------- 服务流程 ---------- */
.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; position: relative; }
.process-step { text-align: center; padding: 30px 18px; background: #fff; border-radius: var(--radius); border: 1px solid var(--line); }
.process-step .step-no {
  width: 52px; height: 52px; margin: 0 auto 16px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #fff; display: grid; place-items: center; font-size: 19px; font-weight: 800;
  box-shadow: 0 8px 18px rgba(255, 122, 24, .3);
}
.process-step h4 { font-size: 16.5px; margin-bottom: 8px; }
.process-step p { font-size: 13.8px; color: var(--muted); }

/* ---------- 优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.adv-item { background: #fff; padding: 30px 26px; transition: .24s; }
.adv-item:hover { background: var(--bg-soft); }
.adv-item .ic {
  width: 44px; height: 44px; border-radius: 12px; background: rgba(255, 122, 24, .1);
  color: var(--accent); display: grid; place-items: center; margin-bottom: 14px;
}
.adv-item h4 { font-size: 16.5px; margin-bottom: 8px; }
.adv-item p { font-size: 14px; color: var(--muted); }

/* ---------- 案例 ---------- */
.filter-bar { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.filter-btn {
  padding: 8px 20px; border-radius: 999px; border: 1px solid var(--line);
  background: #fff; font-size: 14px; color: var(--ink-2); cursor: pointer; transition: .22s;
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand); }
.filter-btn.on { background: var(--brand); border-color: var(--brand); color: #fff; }
.case-card .card-thumb .overlay {
  position: absolute; left: 14px; bottom: 14px; z-index: 2;
  background: rgba(8, 42, 74, .82); color: #fff; font-size: 12px;
  padding: 4px 12px; border-radius: 6px; letter-spacing: .5px;
}
.case-meta { display: flex; gap: 18px; font-size: 13px; color: var(--muted); margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line); }

/* ---------- 新闻 ---------- */
.news-item {
  display: grid; grid-template-columns: 92px 1fr; gap: 20px; padding: 22px 0;
  border-bottom: 1px dashed var(--line); transition: .22s;
}
.news-item:last-child { border-bottom: 0; }
.news-item:hover { background: var(--bg-soft); }
.news-date { text-align: center; background: var(--bg-soft-2); border-radius: 10px; padding: 10px 0; align-self: start; }
.news-date b { display: block; font-size: 26px; line-height: 1.1; color: var(--brand); }
.news-date span { font-size: 12px; color: var(--muted); }
.news-item h4 { font-size: 16.5px; margin-bottom: 6px; }
.news-item p { font-size: 14px; color: var(--muted); }

/* ---------- CTA ---------- */
.cta-banner {
  background: linear-gradient(120deg, var(--brand-dark), var(--brand-2));
  color: #fff; border-radius: 20px; padding: 54px 52px;
  display: flex; align-items: center; justify-content: space-between; gap: 30px;
  position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ""; position: absolute; right: -60px; top: -80px;
  width: 300px; height: 300px; border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 24, .35), transparent 70%);
}
.cta-banner h2 { font-size: 28px; font-weight: 800; }
.cta-banner p { margin-top: 8px; color: rgba(255, 255, 255, .76); font-size: 15px; }
.cta-banner .btns { display: flex; gap: 12px; position: relative; z-index: 2; }

/* ---------- 页头（内页） ---------- */
.page-banner {
  background: linear-gradient(120deg, var(--brand-dark), #1a5c96);
  color: #fff; padding: 62px 0 58px; position: relative; overflow: hidden;
}
.page-banner::after {
  content: ""; position: absolute; right: 0; top: 0; bottom: 0; width: 46%;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 400 300'%3E%3Cpath fill='%23ffffff' fill-opacity='.05' d='M0 300V180l60-40 70 30 60-70 80 50 70-90 60 40v200z'/%3E%3C/svg%3E") no-repeat right bottom / cover;
}
.page-banner h1 { font-size: 34px; font-weight: 800; letter-spacing: .5px; }
.page-banner .crumb { font-size: 13.5px; color: rgba(255, 255, 255, .66); margin-top: 10px; }
.page-banner .crumb a:hover { color: #fff; }
/* 环保主题 banner（关于我们）：绿色厂区背景 + 标语胶囊 */
.page-banner.eco {
  background:
    linear-gradient(115deg, rgba(8, 42, 74, .94) 0%, rgba(13, 59, 102, .84) 52%, rgba(26, 92, 150, .55) 100%),
    url("../img/plant-aerial-new.jpg") center right / cover no-repeat;
}
.page-banner.eco .eco-slogan {
  margin-top: 14px;
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 14.5px; letter-spacing: 1.5px; font-weight: 600;
  color: #d9f2e3;
  background: rgba(126, 212, 154, .14);
  border: 1px solid rgba(126, 212, 154, .38);
  padding: 8px 18px; border-radius: 999px;
}
.page-banner.eco .eco-slogan svg { width: 16px; height: 16px; fill: #7ed49a; flex: none; }

/* ---------- 发展历程 ---------- */
/* 集团发展历程（带图交错时间线） */
.gh-wrap { max-width: 980px; margin: 0 auto; position: relative; }
.gh-wrap::before {
  content: ''; position: absolute; left: 50%; top: 8px; bottom: 8px;
  width: 2px; transform: translateX(-50%);
  background: linear-gradient(to bottom, var(--accent), var(--accent-2));
  opacity: .35; border-radius: 2px;
}
.gh-item {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
  align-items: center; margin-bottom: 44px; position: relative;
}
.gh-item:last-child { margin-bottom: 0; }
.gh-item::after {
  content: ''; position: absolute; left: 50%; top: 50%;
  width: 14px; height: 14px; border-radius: 50%;
  background: var(--accent); border: 3px solid #fff;
  box-shadow: 0 0 0 3px rgba(255, 122, 24, .25);
  transform: translate(-50%, -50%); z-index: 1;
}
.gh-flip .gh-img { order: 2; }
.gh-img {
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); line-height: 0;
}
.gh-img img { width: 100%; height: 260px; object-fit: cover; transition: transform .5s ease; }
.gh-item:hover .gh-img img { transform: scale(1.04); }
.gh-body {
  background: var(--bg); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 24px 26px;
  box-shadow: var(--shadow-sm);
}
.gh-year {
  display: inline-block; font-size: 15px; font-weight: 800; color: #fff;
  background: var(--accent); border-radius: 999px; padding: 3px 14px;
  letter-spacing: .5px;
}
.gh-body h3 { font-size: 17px; margin: 10px 0 8px; color: var(--ink); }
.gh-body p { font-size: 14px; color: var(--muted); line-height: 1.7; }
@media (max-width: 860px) {
  .gh-wrap::before, .gh-item::after { display: none; }
  .gh-item, .gh-item.gh-flip { grid-template-columns: 1fr; gap: 14px; margin-bottom: 32px; }
  .gh-flip .gh-img { order: 0; }
  .gh-img img { height: 210px; }
}

/* ---------- 集团页面 ---------- */
.g-stats { margin-top: 6px; }
.g-stat {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px 18px; text-align: center; box-shadow: 0 6px 22px rgba(13,59,102,.06);
}
.g-stat .g-num { font-size: 34px; font-weight: 800; color: var(--brand); letter-spacing: .5px; }
.g-stat .g-num span { font-size: 15px; font-weight: 600; margin-left: 4px; color: var(--muted); }
.g-stat .g-label { font-size: 13px; color: var(--muted); margin-top: 8px; line-height: 1.5; }
.g-ind .card .g-tag {
  display: inline-block; margin-top: 14px; padding: 4px 12px; border-radius: 999px;
  background: rgba(255,122,24,.12); color: #ff7a18; font-size: 12.5px; font-weight: 600;
}
.g-tech .card p { margin-top: 10px; }
.g-member { gap: 26px; align-items: stretch; }
.g-member .m-photo { aspect-ratio: 24 / 10; overflow: hidden; background: var(--bg-soft-2); }
.g-member .m-photo img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .5s ease; }
.g-member .card:hover .m-photo img { transform: scale(1.04); }
.g-member .m-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.g-member .m-head .g-tag { margin-top: 0; flex: none; }
.g-member .card-body p { font-size: 14px; line-height: 1.75; }

/* 集团理念 */
.philo-core { font-size: 21px; font-weight: 800; color: var(--brand); text-align: center; letter-spacing: 2px; margin: 6px 0 32px; padding: 18px 16px; background: linear-gradient(120deg, rgba(13,59,102,.06), rgba(255,122,24,.10)); border-radius: var(--radius); }
.g-philo .card h4 { font-size: 16.5px; color: var(--brand); margin-bottom: 10px; }
.g-philo .philo-tag { display: inline-block; font-size: 12.5px; color: var(--accent); background: rgba(255,122,24,.10); border: 1px solid rgba(255,122,24,.30); padding: 4px 11px; border-radius: 999px; margin-bottom: 12px; }
.g-philo .card p { font-size: 13.5px; color: var(--ink-2); line-height: 1.72; }

.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 8px; bottom: 8px; width: 2px; background: var(--line); }
.tl-item { position: relative; padding-bottom: 30px; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 6px; width: 14px; height: 14px;
  border-radius: 50%; background: #fff; border: 3px solid var(--accent);
}
.tl-item .year { font-size: 20px; font-weight: 800; color: var(--brand); }
.tl-item h4 { font-size: 16px; margin: 4px 0 6px; }
.tl-item p { font-size: 14px; color: var(--muted); }

/* ---------- 资质 / 荣誉 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cert {
  border: 1px solid var(--line); border-radius: var(--radius); padding: 24px 20px;
  text-align: center; background: #fff; transition: .24s;
}
.cert:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.cert .seal {
  width: 62px; height: 62px; margin: 0 auto 14px; border-radius: 50%;
  background: linear-gradient(135deg, rgba(255, 122, 24, .12), rgba(23, 86, 143, .12));
  display: grid; place-items: center; color: var(--brand);
}
.cert h4 { font-size: 15px; margin-bottom: 5px; }
.cert p { font-size: 13px; color: var(--muted); }

/* ---------- 参数表 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
table.data { width: 100%; border-collapse: collapse; min-width: 720px; }
table.data th, table.data td { padding: 13px 18px; text-align: left; font-size: 14px; border-bottom: 1px solid var(--line); }
table.data thead th { background: var(--brand); color: #fff; font-weight: 600; font-size: 14px; }
table.data tbody tr:hover { background: var(--bg-soft); }
table.data tbody tr:last-child td { border-bottom: 0; }
table.data td:first-child { font-weight: 600; color: var(--brand); }

/* ---------- 产品详情块 ---------- */
.prod-block {
  display: grid; grid-template-columns: 88px 1fr 300px; gap: 30px; align-items: start;
  padding: 32px 0; border-bottom: 1px solid var(--line);
}
.prod-block:last-child { border-bottom: 0; }
.prod-no { font-size: 40px; font-weight: 800; color: var(--bg-soft-2); line-height: 1; }
.prod-block h3 { font-size: 20px; color: var(--brand); margin-bottom: 10px; }
.prod-block p { color: var(--ink-2); font-size: 14.6px; }
.prod-block .spec { background: var(--bg-soft); border-radius: 12px; padding: 18px 20px; }
.prod-block .spec h5 { font-size: 13px; color: var(--muted); margin-bottom: 10px; letter-spacing: 1px; }
.prod-block .spec ul { display: grid; gap: 8px; }
.prod-block .spec li { font-size: 13.8px; display: flex; justify-content: space-between; gap: 12px; }
.prod-block .spec li span { color: var(--muted); }
.prod-block .spec li b { font-weight: 600; }

/* ---------- 联系 ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.info-list { display: grid; gap: 16px; }
.info-item { display: flex; gap: 16px; padding: 20px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.info-item .ic { width: 44px; height: 44px; flex: none; border-radius: 12px; background: var(--bg-soft-2); color: var(--brand); display: grid; place-items: center; }
.info-item .lbl { font-size: 12.5px; color: var(--muted); }
.info-item .val { font-size: 16px; font-weight: 600; color: var(--ink); }
.form-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13.5px; margin-bottom: 6px; color: var(--ink-2); }
.field label i { color: var(--accent); font-style: normal; }
.field input, .field textarea, .field select {
  width: 100%; padding: 11px 14px; border: 1px solid var(--line);
  border-radius: 10px; background: #fff; transition: .2s; font-size: 14.5px;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 0; border-color: var(--brand-2); box-shadow: 0 0 0 3px rgba(23, 86, 143, .1);
}
.field textarea { min-height: 110px; resize: vertical; }
.form-tip { font-size: 13px; color: var(--muted); margin-top: 10px; }
.form-ok {
  display: none; margin-top: 14px; padding: 12px 14px; border-radius: 10px;
  background: rgba(23, 133, 90, .1); color: #17855a; font-size: 14px;
}

/* ---------- 页脚 ---------- */
.footer { background: var(--brand-dark); color: rgba(255, 255, 255, .68); font-size: 14px; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 40px; padding: 62px 0 40px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; font-weight: 600; }
.footer p { line-height: 1.9; }
.footer ul { display: grid; gap: 10px; }
.footer ul a:hover { color: var(--accent-2); }
.footer .logo-text strong { color: #fff; }
.footer .logo-text span { color: rgba(255, 255, 255, .45); }
.footer-contact li { display: flex; gap: 10px; }
.footer-contact b { color: #fff; font-weight: 600; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .1); padding: 18px 0;
  display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 13px;
}
.footer-bottom a:hover { color: #fff; }

/* ---------- 实拍照片 ---------- */
.hero-photo {
  position: absolute; inset: 0;
  background: url("../img/plant-aerial-new.jpg") center/cover no-repeat;
  opacity: .38; filter: saturate(.92);
}
.about-visual .frame img { width: 100%; height: 100%; object-fit: cover; }
.photo-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.photo-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; transition: .26s; margin: 0;
}
.photo-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.photo-card .ph { aspect-ratio: 4 / 3; overflow: hidden; background: var(--bg-soft-2); }
.photo-card .ph img { width: 100%; height: 100%; object-fit: cover; transition: transform .45s ease; }
.photo-card:hover .ph img { transform: scale(1.05); }
.photo-card figcaption { padding: 13px 16px 15px; }
.photo-card figcaption b { display: block; font-size: 14.8px; color: var(--brand); }
.photo-card figcaption span { display: block; font-size: 13px; color: var(--muted); margin-top: 2px; }
.photo-wide { grid-column: span 2; }
.photo-wide .ph { aspect-ratio: 16 / 8.4; }

/* ---------- 证书墙 ---------- */
.cert-photos { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.cert-photo {
  border: 1px solid var(--line); border-radius: 12px; overflow: hidden;
  background: #fff; transition: .24s; margin: 0;
}
.cert-photo:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.cert-photo img { width: 100%; aspect-ratio: 3 / 4; object-fit: cover; display: block; }
.cert-photo figcaption { padding: 10px 12px; font-size: 13px; color: var(--ink-2); text-align: center; }

/* ---------- 动画 ---------- */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 1080px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 40px; }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cert-grid, .grid-4, .process { grid-template-columns: repeat(2, 1fr); }
  .prod-block { grid-template-columns: 60px 1fr; }
  .prod-block .spec { grid-column: 2; }
  .photo-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-photos { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .topbar-right { display: none; }
  .nav {
    position: fixed; top: 74px; left: 0; right: 0; background: #fff;
    flex-direction: column; align-items: stretch; padding: 10px 20px 20px;
    border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    transform: translateY(-12px); opacity: 0; visibility: hidden; transition: .24s;
    max-height: calc(100vh - 74px); overflow-y: auto;
  }
  .nav.open { transform: none; opacity: 1; visibility: visible; }
  .nav > li > a { padding: 13px 10px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav > li.active > a::after { display: none; }
  .submenu {
    position: static; transform: none; opacity: 1; visibility: visible;
    box-shadow: none; border: 0; padding: 4px 0 8px; min-width: 0;
  }
  .nav-toggle { display: block; }
  .header-cta .btn { display: none; }
  .grid-2, .grid-3, .contact-grid { grid-template-columns: 1fr; gap: 28px; }
  .stats .container { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: 0; }
  .stat-item:nth-child(1), .stat-item:nth-child(2) { border-bottom: 1px solid rgba(255, 255, 255, .12); }
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .cta-banner { flex-direction: column; align-items: flex-start; padding: 38px 28px; }
  .hero .container { padding-top: 60px; padding-bottom: 60px; }
  .section { padding: 60px 0; }
  .section-head h2 { font-size: 26px; }
}
@media (max-width: 620px) {
  .hero h1 { font-size: 30px; }
  .hero-actions .btn { width: 100%; }
  .grid-4, .cert-grid, .process, .adv-grid, .footer-top { grid-template-columns: 1fr; }
  .photo-grid { grid-template-columns: 1fr; }
  .photo-wide { grid-column: span 1; }
  .cert-photos { grid-template-columns: repeat(2, 1fr); }
  .stat-item .num { font-size: 30px; }
  .form-row { grid-template-columns: 1fr; }
  .news-item { grid-template-columns: 1fr; gap: 12px; }
  .news-date { display: flex; gap: 10px; align-items: baseline; width: fit-content; padding: 6px 14px; }
  .news-date b { font-size: 18px; }
  .header-phone { display: none; }
}