/* 和众彤盛官网 · 原生CSS */
:root {
  --primary: #ff6a1a;
  --primary-dark: #e5550a;
  --navy: #101a26;
  --navy-2: #16232f;
  --text: #232a33;
  --muted: #6b7684;
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --line: #e6eaef;
  --radius: 12px;
  --shadow: 0 6px 24px rgba(16, 26, 38, .08);
  --maxw: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  color: var(--text); background: var(--bg); line-height: 1.7; font-size: 16px;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部导航 ---------- */
.header {
  position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; }
.logo-img { width: 34px; height: 34px; flex: none; }
.logo-txt small { white-space: nowrap; }
.logo-dot { width: 12px; height: 12px; border-radius: 50%; background: var(--primary); box-shadow: 0 0 12px var(--primary); }
.logo small { font-weight: 400; color: var(--muted); font-size: 11px; letter-spacing: 1px; display: block; line-height: 1; }
.nav { display: flex; gap: 6px; }
.nav a { padding: 8px 16px; border-radius: 8px; font-size: 15px; color: var(--text); transition: .2s; }
.nav a:hover { background: var(--bg-soft); color: var(--primary); }
.nav a.active { color: var(--primary); font-weight: 600; }
.nav-cta { background: var(--primary) !important; color: #fff !important; font-weight: 600; }
.nav-cta:hover { background: var(--primary-dark) !important; }
.menu-btn { display: none; background: none; border: 0; font-size: 24px; cursor: pointer; color: var(--text); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 560px; display: flex; align-items: center;
  background: var(--navy); color: #fff; overflow: hidden;
}
.hero-bg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .38; }
.hero-mask { position: absolute; inset: 0; background: linear-gradient(100deg, rgba(16,26,38,.92) 25%, rgba(16,26,38,.35) 70%); }
.hero .container { position: relative; z-index: 2; padding: 90px 24px; }
.hero-kicker { display: inline-block; border: 1px solid rgba(255,255,255,.35); padding: 4px 14px; border-radius: 999px; font-size: 13px; letter-spacing: 2px; margin-bottom: 22px; color: #ffd9be; }
.hero h1 { font-size: 46px; line-height: 1.25; font-weight: 700; max-width: 640px; }
.hero h1 em { font-style: normal; color: var(--primary); }
.hero p { margin-top: 18px; max-width: 560px; color: #c8d2dc; font-size: 17px; }
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 30px; border-radius: 10px; font-size: 16px; font-weight: 600; transition: .2s; cursor: pointer; border: 0; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-ghost { border: 1px solid rgba(255,255,255,.45); color: #fff; }
.btn-ghost:hover { background: rgba(255,255,255,.12); }

/* 数据条 */
.stats { background: var(--navy-2); color: #fff; }
.stats .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; padding: 30px 24px; }
.stat { text-align: center; }
.stat b { font-size: 30px; color: var(--primary); display: block; }
.stat span { font-size: 13px; color: #9fb0c0; }

/* ---------- 区块通用 ---------- */
.section { padding: 76px 0; }
.section.soft { background: var(--bg-soft); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 46px; }
.section-head .en { color: var(--primary); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; font-weight: 600; }
.section-head h2 { font-size: 32px; margin-top: 8px; }
.section-head p { color: var(--muted); margin-top: 12px; }

/* ---------- 关于摘要 ---------- */
.about-grid { display: grid; grid-template-columns: 1.05fr .95fr; gap: 44px; align-items: center; }
.about-grid img { border-radius: var(--radius); box-shadow: var(--shadow); width: 100%; object-fit: cover; aspect-ratio: 4/3; }
.about-grid h3 { font-size: 24px; margin-bottom: 14px; }
.about-grid p { color: var(--muted); margin-bottom: 12px; }
.mvv { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.mvv div { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; font-size: 14px; }
.mvv b { color: var(--primary); margin-right: 6px; }

/* ---------- 产品系列卡片 ---------- */
.series-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.series-card {
  position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow);
  background: #fff; transition: .25s; display: block;
}
.series-card:hover { transform: translateY(-5px); }
.series-card .cover { aspect-ratio: 16/10; background-size: cover; background-position: center; transition: .3s; }
.series-card:hover .cover { transform: scale(1.04); }
.series-card .body { padding: 20px 22px 24px; }
.series-card .tag { color: var(--primary); font-size: 13px; font-weight: 600; }
.series-card h3 { font-size: 20px; margin: 6px 0 8px; }
.series-card p { color: var(--muted); font-size: 14px; min-height: 66px; }
.series-card .count { display: inline-block; margin-top: 10px; font-size: 13px; color: var(--primary); border: 1px solid var(--primary); border-radius: 999px; padding: 2px 12px; }

/* ---------- 优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.adv-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 24px; transition: .25s; }
.adv-card:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateY(-4px); }
.adv-icon { width: 52px; height: 52px; border-radius: 12px; background: linear-gradient(135deg, #ff8a3c, #ff5e00); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 700; margin-bottom: 16px; }
.adv-card h3 { font-size: 18px; margin-bottom: 8px; }
.adv-card p { color: var(--muted); font-size: 14px; }

/* ---------- 产品列表页 ---------- */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 34px; }
.filter-bar button { padding: 9px 20px; border-radius: 999px; border: 1px solid var(--line); background: #fff; cursor: pointer; font-size: 14px; color: var(--muted); transition: .2s; }
.filter-bar button.active { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.product-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.product-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; cursor: pointer; transition: .25s; }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.product-card .cover { aspect-ratio: 1; background-size: cover; background-position: center; }
.product-card .body { padding: 14px 16px 18px; }
.product-card h3 { font-size: 15px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; min-height: 45px; }
.product-card .meta { margin-top: 8px; display: flex; gap: 8px; flex-wrap: wrap; }
.chip { font-size: 12px; color: var(--muted); background: var(--bg-soft); border-radius: 6px; padding: 2px 8px; }
.chip.hot { color: var(--primary); background: #fff2e9; }
.creative-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.type-card { border-radius: var(--radius); overflow: hidden; position: relative; box-shadow: var(--shadow); aspect-ratio: 4/3; }
.type-card img { width: 100%; height: 100%; object-fit: cover; }
.type-card .cap { position: absolute; inset: auto 0 0 0; background: linear-gradient(transparent, rgba(16,26,38,.85)); color: #fff; padding: 30px 16px 14px; }
.type-card .cap b { font-size: 16px; display: block; }
.type-card .cap span { font-size: 12px; color: #ffd9be; }

/* ---------- 产品详情弹层 ---------- */
.modal-mask { position: fixed; inset: 0; background: rgba(16,26,38,.6); z-index: 200; display: none; align-items: center; justify-content: center; padding: 24px; }
.modal-mask.open { display: flex; }
.modal { background: #fff; border-radius: 16px; max-width: 980px; width: 100%; max-height: 90vh; overflow: auto; position: relative; }
.modal-close { position: absolute; right: 14px; top: 12px; font-size: 26px; border: 0; background: none; cursor: pointer; color: #888; z-index: 5; }
.modal-body { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; padding: 34px; }
.gallery-main { aspect-ratio: 1; border-radius: 12px; background-size: cover; background-position: center; background-color: #f0f2f5; }
.gallery-thumbs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; margin-top: 10px; }
.gallery-thumbs div { aspect-ratio: 1; border-radius: 8px; background-size: cover; background-position: center; cursor: pointer; border: 2px solid transparent; opacity: .75; }
.gallery-thumbs div.active { border-color: var(--primary); opacity: 1; }
.modal h2 { font-size: 22px; line-height: 1.4; }
.param-table { width: 100%; border-collapse: collapse; margin-top: 16px; font-size: 14px; }
.param-table td { border: 1px solid var(--line); padding: 8px 12px; }
.param-table td:first-child { background: var(--bg-soft); color: var(--muted); width: 92px; white-space: nowrap; }
.sku-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.modal-foot { grid-column: 1 / -1; border-top: 1px solid var(--line); padding-top: 18px; display: flex; align-items: center; justify-content: space-between; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 14px; }

/* ---------- 品质/工厂 ---------- */
.q-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.q-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.q-card img { aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.q-card .body { padding: 16px 18px 20px; }
.q-card h3 { font-size: 16px; margin-bottom: 6px; }
.q-card p { font-size: 13px; color: var(--muted); }
.factory-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.factory-card { position: relative; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.factory-card img { width: 100%; aspect-ratio: 4/3; object-fit: cover; transition: .3s; }
.factory-card:hover img { transform: scale(1.04); }
.factory-card .cap { position: absolute; inset: auto 0 0 0; background: linear-gradient(transparent, rgba(16,26,38,.85)); color: #fff; padding: 34px 18px 16px; }
.factory-card .cap b { font-size: 17px; }
.factory-card .cap p { font-size: 13px; color: #cfd9e2; margin-top: 4px; }

/* ---------- 解决方案页 ---------- */
.sol-hero { background: var(--navy); color: #fff; padding: 80px 0 60px; position: relative; overflow: hidden; }
.sol-hero .bgimg { position: absolute; inset: 0; background-size: cover; background-position: center; opacity: .25; }
.sol-hero .container { position: relative; }
.sol-hero h1 { font-size: 38px; }
.sol-hero p { color: #b9c6d2; max-width: 640px; margin-top: 14px; }
.feature-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.feature-item { background: var(--navy-2); border: 1px solid #24374a; border-radius: var(--radius); padding: 22px; }
.feature-item b { color: var(--primary); font-size: 16px; display: block; margin-bottom: 6px; }
.feature-item span { font-size: 14px; color: #aebcc9; }
.scene-block { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; padding: 44px 0; border-bottom: 1px solid var(--line); }
.scene-block:last-child { border-bottom: 0; }
.scene-block img { border-radius: var(--radius); box-shadow: var(--shadow); aspect-ratio: 16/10; object-fit: cover; width: 100%; }
.scene-block.rev img { order: 2; }
.scene-block h3 { font-size: 24px; margin-bottom: 12px; }
.scene-block h3 small { display: block; font-size: 13px; color: var(--primary); letter-spacing: 2px; margin-bottom: 6px; }
.scene-block p, .scene-block li { color: var(--muted); font-size: 15px; }
.scene-block ul { margin-top: 10px; }
.scene-block li { padding: 4px 0 4px 22px; position: relative; }
.scene-block li::before { content: ""; position: absolute; left: 0; top: 13px; width: 10px; height: 10px; border-radius: 3px; background: var(--primary); opacity: .85; }
.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 16px; }
.spec-table td { border: 1px solid var(--line); padding: 7px 12px; }
.spec-table td:first-child { background: var(--bg-soft); color: var(--muted); width: 110px; white-space: nowrap; }
.value-banner { background: linear-gradient(120deg, #16232f, #1d3145); border-radius: 16px; color: #fff; padding: 40px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.value-banner b { font-size: 26px; color: var(--primary); display: block; }
.value-banner span { font-size: 14px; color: #aebcc9; }

/* ---------- 案例/伙伴 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.case-card { border-radius: var(--radius); overflow: hidden; position: relative; box-shadow: var(--shadow); }
.case-card img { aspect-ratio: 4/3; object-fit: cover; width: 100%; transition: .3s; }
.case-card:hover img { transform: scale(1.05); }
.case-card .cap { position: absolute; inset: auto 0 0 0; background: linear-gradient(transparent, rgba(16,26,38,.85)); color: #fff; padding: 28px 14px 12px; font-size: 14px; }
.partner-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 14px; }
.partner-grid .p-item { border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: #fff; display: flex; align-items: center; justify-content: center; padding: 10px; filter: grayscale(0); }
.partner-grid img { max-height: 52px; object-fit: contain; }

/* ---------- 资质 ---------- */
.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cert-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; text-align: center; }
.cert-card img { border-radius: 8px; aspect-ratio: 4/3; object-fit: cover; width: 100%; }
.cert-card p { margin-top: 10px; font-size: 14px; color: var(--muted); }

/* ---------- 联系 / 页脚 ---------- */
.contact-strip { background: var(--navy); color: #fff; }
.contact-strip .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 50px 24px; }
.contact-strip h4 { color: var(--primary); font-size: 15px; margin-bottom: 10px; }
.contact-strip p { font-size: 14px; color: #aebcc9; }
.footer-logo { height: 40px; width: auto; }
.footer { background: #0b131c; color: #7d8b99; font-size: 13px; }
.footer .container { display: flex; align-items: center; justify-content: space-between; padding: 22px 24px; gap: 16px; flex-wrap: wrap; }
.footer img { height: 40px; border-radius: 6px; }

/* ---------- 响应式 ---------- */
@media (max-width: 960px) {
  .nav { position: fixed; inset: 64px 0 auto 0; background: #fff; flex-direction: column; padding: 16px 24px 24px; border-bottom: 1px solid var(--line); display: none; }
  .nav.open { display: flex; }
  .menu-btn { display: block; }
  .hero h1 { font-size: 32px; }
  .stats .container, .adv-grid, .q-grid { grid-template-columns: repeat(2, 1fr); }
  .series-grid, .factory-grid, .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid, .creative-grid, .case-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(4, 1fr); }
  .about-grid, .modal-body, .scene-block { grid-template-columns: 1fr; }
  .scene-block.rev img { order: 0; }
  .feature-list { grid-template-columns: 1fr; }
  .value-banner { grid-template-columns: 1fr; padding: 28px; }
  .contact-strip .container { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .series-grid, .product-grid, .adv-grid, .q-grid, .creative-grid, .case-grid, .factory-grid { grid-template-columns: 1fr; }
  .section { padding: 54px 0; }
  .modal-body { padding: 20px; }
}

/* ---------- SEO 补丁：主标题 h1 保持 h2 视觉 ---------- */
h1.sec-title{font-size:1.5em;font-weight:bold;line-height:1.3;margin:0.83em 0}