/* ============================================================
   喵净 MIAOJING 猫砂销售公司官网 — 全站样式
   ============================================================ */

/* ---------- 设计令牌 ---------- */
:root {
  --brand: #12a184;
  --brand-strong: #0b7a63;
  --brand-deep: #0a5c4c;
  --brand-soft: #e3f3ed;
  --amber: #e9a13b;
  --amber-soft: #fbeedb;
  --sand: #f6f2ea;
  --surface: #ffffff;
  --ink: #26332d;
  --muted: #67776f;
  --line: #e5e0d4;
  --footer: #10342a;
  --footer-line: rgba(255, 255, 255, 0.14);
  --shadow-sm: 0 2px 10px rgba(38, 51, 45, 0.06);
  --shadow-md: 0 14px 34px rgba(38, 51, 45, 0.10);
  --radius: 18px;
  --radius-lg: 26px;
  --container: 1200px;
  --header-h: 76px;
}

/* ---------- 基础 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Sans SC Variable", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  color: var(--ink);
  background: var(--sand);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; }
::selection { background: var(--brand); color: #fff; }

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

.section { padding: 92px 0; }
.section--soft { background: var(--sand); }
.section--white { background: var(--surface); }

/* 区块标题 */
.sec-head { max-width: 640px; margin-bottom: 48px; }
.sec-head--center { margin-left: auto; margin-right: auto; text-align: center; }
.sec-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--brand-strong); font-weight: 600; font-size: 14px;
  letter-spacing: 0.04em; margin-bottom: 14px;
}
.sec-eyebrow svg { width: 18px; height: 18px; flex: none; }
.sec-title { font-size: 34px; font-weight: 800; line-height: 1.3; letter-spacing: -0.01em; }
.sec-sub { margin-top: 14px; color: var(--muted); font-size: 16px; }

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 13px 28px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1.5px solid transparent; transition: all 0.22s ease; white-space: nowrap;
}
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-strong); transform: translateY(-1px); }
.btn-amber { background: var(--amber); color: #fff; }
.btn-amber:hover { background: #d68f27; transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--brand-deep); border-color: rgba(10, 92, 76, 0.4); }
.btn-ghost:hover { background: var(--brand-soft); }
.btn-light { background: #fff; color: var(--brand-deep); }
.btn-light:hover { background: var(--brand-soft); }

/* 小徽标 */
.chip {
  display: inline-block; padding: 4px 12px; border-radius: 999px;
  background: var(--brand-soft); color: var(--brand-strong);
  font-size: 12.5px; font-weight: 600;
}
.chip--amber { background: var(--amber-soft); color: #a4660f; }

/* ============================================================
   顶部导航
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.site-header.scrolled { border-bottom-color: var(--line); box-shadow: 0 6px 24px rgba(38, 51, 45, 0.06); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }
.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark { width: 42px; height: 42px; border-radius: 50%; object-fit: cover; box-shadow: var(--shadow-sm); }
.brand-text { font-size: 22px; font-weight: 800; letter-spacing: 0.02em; color: var(--ink); line-height: 1.1; display: flex; flex-direction: column; }
.brand-text small { font-size: 10px; font-weight: 600; letter-spacing: 0.32em; color: var(--brand-strong); }

.site-nav { display: flex; align-items: center; gap: 6px; }
.nav-link {
  padding: 9px 16px; border-radius: 999px; font-size: 15px; font-weight: 500;
  color: var(--ink); transition: background 0.2s ease, color 0.2s ease;
}
.nav-link:hover { color: var(--brand-strong); background: var(--brand-soft); }
.nav-link[aria-current="page"] { color: var(--brand-deep); background: var(--brand-soft); font-weight: 600; }
.nav-cta { margin-left: 10px; padding: 11px 22px; font-size: 14px; }

.nav-toggle {
  display: none; width: 44px; height: 44px; border: 0; background: none;
  flex-direction: column; align-items: center; justify-content: center; gap: 5px;
}
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.25s ease, opacity 0.2s ease; }
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   页头横幅（内页）
   ============================================================ */
.page-hero { background: var(--brand-deep); color: #fff; padding: 64px 0 60px; position: relative; overflow: hidden; }
.page-hero::after {
  content: ""; position: absolute; right: -120px; top: -120px; width: 340px; height: 340px;
  border-radius: 50%; background: rgba(255, 255, 255, 0.06);
}
.page-hero .container { position: relative; z-index: 1; }
.page-hero .crumbs { font-size: 13.5px; opacity: 0.75; margin-bottom: 14px; }
.page-hero .crumbs a:hover { opacity: 1; text-decoration: underline; }
.page-hero h1 { font-size: 40px; font-weight: 800; letter-spacing: 0.01em; }
.page-hero p { margin-top: 10px; max-width: 640px; opacity: 0.85; font-size: 16px; }

/* ============================================================
   首页 Hero
   ============================================================ */
.hero { padding: 0; }
.hero-grid {
  display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 48px;
  align-items: center; min-height: 620px; padding: 56px 0 72px;
}
.hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 7px 16px; border-radius: 999px; background: var(--brand-soft);
  color: var(--brand-strong); font-size: 13.5px; font-weight: 600; margin-bottom: 24px;
}
.hero-kicker svg { width: 16px; height: 16px; }
.hero h1 { font-size: 52px; line-height: 1.24; font-weight: 800; letter-spacing: -0.015em; }
.hero h1 em { font-style: normal; color: var(--brand); }
.hero-desc { margin-top: 22px; color: var(--muted); font-size: 17px; max-width: 500px; }
.hero-actions { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  margin-top: 46px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
  border-top: 1px solid var(--line); padding-top: 28px; max-width: 520px;
}
.hero-stat b { display: block; font-size: 30px; font-weight: 800; color: var(--brand-deep); line-height: 1.15; }
.hero-stat b small { font-size: 16px; font-weight: 700; }
.hero-stat span { font-size: 13px; color: var(--muted); }

.hero-media { position: relative; }
.hero-media::before {
  content: ""; position: absolute; inset: 26px -26px -26px 26px;
  background: var(--brand-soft); border-radius: var(--radius-lg); z-index: 0;
}
.hero-media img {
  position: relative; z-index: 1; width: 100%; height: 480px; object-fit: cover;
  border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
}
.hero-badge {
  position: absolute; z-index: 2; left: -20px; bottom: 34px;
  background: #fff; border-radius: 16px; box-shadow: var(--shadow-md);
  padding: 14px 20px; display: flex; align-items: center; gap: 12px;
}
.hero-badge svg { width: 34px; height: 34px; color: var(--brand); }
.hero-badge b { display: block; font-size: 15px; line-height: 1.3; }
.hero-badge span { font-size: 12.5px; color: var(--muted); }

/* ============================================================
   品类速览
   ============================================================ */
.cat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.cat-card {
  position: relative; display: block; background: var(--surface);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}
.cat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.cat-card img { width: 100%; height: 150px; object-fit: cover; }
.cat-card-body { padding: 16px 18px 18px; }
.cat-card-body h3 { font-size: 17px; font-weight: 700; }
.cat-card-body p { font-size: 13.5px; color: var(--muted); margin-top: 4px; }
.cat-card-body .go { display: inline-flex; align-items: center; gap: 5px; margin-top: 10px; font-size: 13.5px; font-weight: 600; color: var(--brand-strong); }
.cat-card-body .go svg { width: 14px; height: 14px; transition: transform 0.2s ease; }
.cat-card:hover .go svg { transform: translateX(3px); }

/* ============================================================
   产品卡片
   ============================================================ */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.prod-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}
.prod-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.prod-media { position: relative; aspect-ratio: 1 / 1; overflow: hidden; background: var(--brand-soft); }
.prod-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.45s ease; }
.prod-card:hover .prod-media img { transform: scale(1.04); }
.prod-media .chip { position: absolute; top: 14px; left: 14px; box-shadow: var(--shadow-sm); }
.prod-body { padding: 20px 22px 22px; display: flex; flex-direction: column; flex: 1; }
.prod-body h3 { font-size: 19px; font-weight: 700; }
.prod-body .prod-tag { color: var(--brand-strong); font-size: 13px; font-weight: 600; margin: 3px 0 8px; }
.prod-body p { font-size: 14px; color: var(--muted); flex: 1; }
.prod-specs { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line); display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.prod-specs div b { display: block; font-size: 13px; font-weight: 700; }
.prod-specs div span { font-size: 12px; color: var(--muted); }
.prod-cta { margin-top: 16px; display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--brand-strong); }
.prod-cta svg { width: 15px; height: 15px; transition: transform 0.2s ease; }
.prod-card:hover .prod-cta svg { transform: translateX(3px); }

/* ============================================================
   品牌优势
   ============================================================ */
.feat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.feat-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px 26px; transition: transform 0.24s ease, box-shadow 0.24s ease; }
.feat-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.feat-icon {
  width: 54px; height: 54px; border-radius: 16px; background: var(--brand-soft);
  color: var(--brand-strong); display: flex; align-items: center; justify-content: center; margin-bottom: 18px;
}
.feat-icon svg { width: 28px; height: 28px; }
.feat-card h3 { font-size: 18px; font-weight: 700; }
.feat-card p { margin-top: 8px; font-size: 14px; color: var(--muted); }

/* ============================================================
   生产基地（图片 + 文案）
   ============================================================ */
.factory-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.factory-media { position: relative; }
.factory-media img { width: 100%; height: 420px; object-fit: cover; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.factory-media::after {
  content: ""; position: absolute; left: -22px; bottom: -22px; width: 55%; height: 45%;
  border: 2px solid var(--brand); border-radius: var(--radius-lg); z-index: -1;
}
.factory-body h2 { font-size: 32px; font-weight: 800; line-height: 1.35; }
.factory-body > p { margin-top: 18px; color: var(--muted); }
.factory-points { margin-top: 26px; display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.factory-points li { display: flex; gap: 10px; align-items: flex-start; font-size: 14.5px; }
.factory-points svg { width: 20px; height: 20px; color: var(--brand); flex: none; margin-top: 2px; }
.factory-points b { display: block; font-size: 15px; }
.factory-points span { color: var(--muted); font-size: 13.5px; }

/* ============================================================
   新闻卡片
   ============================================================ */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.news-card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform 0.24s ease, box-shadow 0.24s ease;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.news-media { aspect-ratio: 3 / 2; overflow: hidden; }
.news-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.45s ease; }
.news-card:hover .news-media img { transform: scale(1.05); }
.news-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.news-meta { display: flex; gap: 12px; align-items: center; font-size: 12.5px; color: var(--muted); margin-bottom: 10px; }
.news-body h3 { font-size: 17px; font-weight: 700; line-height: 1.5; }
.news-body p { margin-top: 8px; font-size: 14px; color: var(--muted); flex: 1; }
.news-more { margin-top: 14px; color: var(--brand-strong); font-weight: 600; font-size: 13.5px; display: inline-flex; align-items: center; gap: 5px; }
.news-more svg { width: 14px; height: 14px; }

/* 新闻列表页 */
.news-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.news-item { display: grid; grid-template-columns: 300px 1fr; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform 0.24s ease, box-shadow 0.24s ease; }
.news-item:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.news-item img { width: 100%; height: 100%; object-fit: cover; }
.news-item-body { padding: 24px 26px; display: flex; flex-direction: column; }
.news-item-body h3 { font-size: 20px; font-weight: 700; line-height: 1.5; }
.news-item-body p { margin-top: 10px; color: var(--muted); font-size: 14.5px; flex: 1; }

/* 文章正文 */
.article { max-width: 780px; margin: 0 auto; padding: 64px 0 88px; }
.article .article-head { text-align: center; margin-bottom: 40px; }
.article h1 { font-size: 34px; font-weight: 800; line-height: 1.4; }
.article .article-meta { margin-top: 16px; display: flex; justify-content: center; gap: 18px; color: var(--muted); font-size: 14px; }
.article .article-hero { border-radius: var(--radius-lg); overflow: hidden; margin-bottom: 34px; box-shadow: var(--shadow-sm); }
.article .article-body { font-size: 16.5px; line-height: 1.95; color: #33423b; }
.article .article-body h2 { font-size: 23px; font-weight: 800; margin: 38px 0 16px; padding-left: 14px; border-left: 4px solid var(--brand); }
.article .article-body p { margin-bottom: 18px; }
.article .article-body ul { margin: 0 0 20px 0; }
.article .article-body li { position: relative; padding-left: 22px; margin-bottom: 10px; }
.article .article-body li::before { content: ""; position: absolute; left: 2px; top: 11px; width: 8px; height: 8px; border-radius: 50%; background: var(--brand); }
.article .article-tags { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); display: flex; gap: 10px; flex-wrap: wrap; }

/* ============================================================
   CTA 合作条
   ============================================================ */
.cta-band { background: var(--brand-deep); color: #fff; border-radius: var(--radius-lg); padding: 52px 56px; display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-band h2 { font-size: 28px; font-weight: 800; }
.cta-band p { margin-top: 8px; opacity: 0.8; }
.cta-band .btn { flex: none; }
.cta-phone { display: flex; align-items: center; gap: 12px; font-size: 24px; font-weight: 800; letter-spacing: 0.03em; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { background: var(--footer); color: rgba(255, 255, 255, 0.78); margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 40px; padding: 64px 0 48px; }
.footer-brand p { margin-top: 14px; font-size: 14px; line-height: 1.9; max-width: 320px; }
.footer-col h4 { color: #fff; font-size: 15.5px; font-weight: 700; margin-bottom: 18px; }
.footer-col a { display: block; padding: 5px 0; font-size: 14px; color: rgba(255, 255, 255, 0.72); transition: color 0.2s ease, transform 0.2s ease; }
.footer-col a:hover { color: #fff; transform: translateX(3px); }
.footer-contact li { display: flex; gap: 10px; font-size: 14px; padding: 5px 0; align-items: flex-start; }
.footer-contact svg { width: 17px; height: 17px; flex: none; margin-top: 4px; color: var(--brand); }
.footer-bottom { border-top: 1px solid var(--footer-line); padding: 20px 0; font-size: 13px; color: rgba(255, 255, 255, 0.55); }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; }

/* ============================================================
   产品筛选（产品中心页）
   ============================================================ */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 40px; }
.filter-btn {
  padding: 9px 20px; border-radius: 999px; border: 1.5px solid var(--line);
  background: var(--surface); color: var(--ink); font-size: 14.5px; font-weight: 500;
  transition: all 0.2s ease;
}
.filter-btn:hover { border-color: var(--brand); color: var(--brand-strong); }
.filter-btn.active { background: var(--brand); border-color: var(--brand); color: #fff; font-weight: 600; }

/* ============================================================
   关于我们
   ============================================================ */
.about-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about-intro img { width: 100%; height: 440px; object-fit: cover; border-radius: var(--radius-lg); box-shadow: var(--shadow-md); }
.about-intro h2 { font-size: 32px; font-weight: 800; line-height: 1.4; }
.about-intro .lead { margin-top: 18px; font-size: 16.5px; line-height: 1.9; color: #33423b; }
.about-intro .sub-lead { margin-top: 14px; color: var(--muted); }
.about-nums { margin-top: 30px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.about-nums div { background: var(--brand-soft); border-radius: 16px; padding: 18px 14px; text-align: center; }
.about-nums b { display: block; font-size: 26px; font-weight: 800; color: var(--brand-deep); }
.about-nums span { font-size: 12.5px; color: var(--muted); }

/* 时间轴 */
.timeline { max-width: 900px; margin: 0 auto; display: grid; gap: 0; }
.tl-row { display: grid; grid-template-columns: 140px 60px 1fr; gap: 0; padding: 22px 0; position: relative; }
.tl-row::before {
  content: ""; position: absolute; left: 169px; top: 0; bottom: 0; width: 2px;
  background: var(--line); transform: translateX(-50%);
}
.tl-row:first-child::before { top: 50%; }
.tl-row:last-child::before { bottom: 50%; }
.tl-year { font-size: 18px; font-weight: 800; color: var(--brand-deep); text-align: right; padding-right: 18px; }
.tl-dot { position: relative; z-index: 1; justify-self: center; align-self: center; width: 14px; height: 14px; border-radius: 50%; background: var(--brand); border: 3px solid var(--surface); box-shadow: 0 0 0 2px var(--brand); }
.tl-card { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px 20px; margin-left: 26px; }
.tl-card b { font-size: 16px; }
.tl-card p { font-size: 13.5px; color: var(--muted); margin-top: 3px; }

/* 资质 */
.qual-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.qual-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; text-align: center; }
.qual-card .qual-icon { width: 52px; height: 52px; margin: 0 auto 14px; border-radius: 50%; background: var(--amber-soft); color: #a4660f; display: flex; align-items: center; justify-content: center; }
.qual-card .qual-icon svg { width: 26px; height: 26px; }
.qual-card h3 { font-size: 16.5px; font-weight: 700; }
.qual-card p { font-size: 13px; color: var(--muted); margin-top: 6px; }

/* 价值观 */
.value-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.value-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 28px; }
.value-card .num { font-size: 40px; font-weight: 800; color: var(--brand-soft); line-height: 1; -webkit-text-stroke: 1.5px var(--brand); letter-spacing: 0.02em; }
.value-card h3 { margin-top: 14px; font-size: 19px; font-weight: 700; }
.value-card p { margin-top: 8px; font-size: 14px; color: var(--muted); }

/* ============================================================
   联系我们
   ============================================================ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 24px; }
.contact-card .c-icon { width: 46px; height: 46px; border-radius: 14px; background: var(--brand-soft); color: var(--brand-strong); display: flex; align-items: center; justify-content: center; margin-bottom: 14px; }
.contact-card .c-icon svg { width: 24px; height: 24px; }
.contact-card h3 { font-size: 16.5px; font-weight: 700; }
.contact-card p { margin-top: 8px; font-size: 14.5px; color: var(--muted); line-height: 1.8; }
.contact-card a { color: var(--brand-strong); font-weight: 600; }

.coop-panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 32px 30px; }
.coop-panel h2 { font-size: 22px; font-weight: 800; }
.coop-panel > p { margin-top: 8px; color: var(--muted); font-size: 14.5px; }
.coop-list { margin-top: 24px; display: grid; gap: 16px; }
.coop-list li { display: flex; gap: 14px; align-items: flex-start; }
.coop-list .dot { width: 34px; height: 34px; border-radius: 50%; background: var(--brand-soft); color: var(--brand-strong); font-weight: 800; font-size: 15px; display: flex; align-items: center; justify-content: center; flex: none; }
.coop-list b { display: block; font-size: 15.5px; }
.coop-list span { font-size: 13.5px; color: var(--muted); }

/* FAQ */
.faq { max-width: 780px; margin: 0 auto; }
.faq-item { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; margin-bottom: 14px; overflow: hidden; }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 18px 22px; background: none; border: 0; text-align: left; font-size: 16px; font-weight: 600; color: var(--ink); }
.faq-q svg { width: 20px; height: 20px; flex: none; color: var(--brand-strong); transition: transform 0.25s ease; }
.faq-item.open .faq-q svg { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
.faq-a-inner { padding: 0 22px 20px; color: var(--muted); font-size: 14.5px; line-height: 1.9; }

/* 访指引 */
.guide { background: var(--brand-soft); border-radius: var(--radius); padding: 26px 28px; display: flex; gap: 16px; align-items: flex-start; }
.guide svg { width: 26px; height: 26px; color: var(--brand-strong); flex: none; margin-top: 2px; }
.guide b { font-size: 16px; color: var(--brand-deep); }
.guide p { margin-top: 4px; font-size: 14px; color: #3c5a4f; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .cat-grid, .feat-grid { grid-template-columns: repeat(2, 1fr); }
  .prod-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .qual-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 44px; }
  .hero-grid { min-height: 0; }
}

@media (max-width: 900px) {
  .site-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; z-index: 99;
    background: #fff; flex-direction: column; align-items: stretch; gap: 4px;
    padding: 16px 24px 24px; border-bottom: 1px solid var(--line);
    box-shadow: 0 20px 40px rgba(38, 51, 45, 0.10);
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform 0.24s ease, opacity 0.2s ease;
  }
  .site-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-link { padding: 13px 16px; font-size: 16px; }
  .nav-cta { margin: 8px 0 0; }
  .nav-toggle { display: flex; }
  .hero-grid { grid-template-columns: 1fr; padding: 40px 0 56px; }
  .hero-media img { height: 420px; }
  .hero-media::before { inset: 18px -14px -14px 14px; }
  .hero-badge { left: 14px; }
  .factory-grid, .about-intro { grid-template-columns: 1fr; gap: 40px; }
  .factory-media img, .about-intro img { height: 380px; }
  .news-item { grid-template-columns: 1fr; }
  .news-item img { height: 220px; }
  .contact-grid { grid-template-columns: 1fr; }
  .cta-band { padding: 40px 30px; }
  .tl-row { grid-template-columns: 96px 44px 1fr; }
  .tl-row::before { left: 117px; }
}

@media (max-width: 640px) {
  body { font-size: 15px; }
  .section { padding: 60px 0; }
  .sec-title { font-size: 27px; }
  .page-hero { padding: 48px 0 44px; }
  .page-hero h1 { font-size: 30px; }
  .hero h1 { font-size: 34px; }
  .hero-desc { font-size: 15.5px; }
  .hero-stats { gap: 12px; }
  .hero-stat b { font-size: 24px; }
  .hero-media img { height: 300px; }
  .cat-grid, .feat-grid, .prod-grid, .news-grid, .qual-grid, .value-grid { grid-template-columns: 1fr; }
  .news-list { grid-template-columns: 1fr; }
  .contact-cards { grid-template-columns: 1fr; }
  .about-nums { grid-template-columns: repeat(2, 1fr); }
  .factory-points { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; padding: 48px 0 36px; }
  .footer-brand p { max-width: 100%; }
  .cta-phone { font-size: 19px; }
  .article h1 { font-size: 26px; }
  .article { padding: 44px 0 60px; }
  .tl-row { grid-template-columns: 78px 36px 1fr; }
  .tl-row::before { left: 95px; }
  .tl-card { margin-left: 16px; padding: 14px 16px; }
}