/* ==========================================================================
   CRYJT 官网前台样式
   设计取向：工业质感 / 大图优先 / 细线分隔 / 暖铜色点缀
   断点：1440+ / 1200-1439 / 992-1199 / 768-991 / 480-767 / <=479 / <=375
   ========================================================================== */

:root {
  --ink: #101514;
  --ink-2: #1c2422;
  --ink-3: #2d3835;
  --paper: #f6f5f1;
  --paper-2: #eceae3;
  --line: #d8d5cc;
  --line-dark: rgba(255, 255, 255, 0.14);
  --copper: #b4522a;
  --copper-dark: #8c3a19;
  --copper-soft: #f2e6de;
  --muted: #6b6f6c;
  --muted-light: #a4a8a4;
  --white: #fff;
  --radius: 2px;
  --shadow-sm: 0 1px 2px rgba(16, 21, 20, 0.06);
  --shadow: 0 18px 40px -24px rgba(16, 21, 20, 0.35);
  --font: "Inter", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --font-serif: "Georgia", "Times New Roman", "Songti SC", serif;
  --max: 1320px;
  --gap: 32px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--copper); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 40px; }

/* ---------------- 通用标题系统 ---------------- */
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-size: 12px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--copper); font-weight: 600;
}
.eyebrow::before { content: ""; width: 24px; height: 1px; background: var(--copper); }

.sec-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; margin-bottom: 40px; }
.sec-head h2 {
  margin: 8px 0 0; font-size: clamp(26px, 3vw, 40px); line-height: 1.2;
  letter-spacing: -0.02em; font-weight: 600;
}
.sec-head p { margin: 10px 0 0; color: var(--muted); max-width: 560px; }
.sec-link {
  flex: none; font-size: 14px; border-bottom: 1px solid var(--ink);
  padding-bottom: 2px; transition: color .2s, border-color .2s;
}
.sec-link:hover { color: var(--copper); border-color: var(--copper); }

.sec { padding: 96px 0; }
.sec--tight { padding: 64px 0; }
.sec--dark { background: var(--ink); color: var(--paper); }
.sec--paper2 { background: var(--paper-2); }

/* ---------------- 按钮 ---------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 48px; padding: 0 26px; border: 1px solid var(--ink);
  background: var(--ink); color: var(--paper);
  font-size: 14px; letter-spacing: 0.04em; font-weight: 500;
  cursor: pointer; transition: background .2s, color .2s, border-color .2s, transform .2s;
}
.btn:hover { background: var(--copper); border-color: var(--copper); color: #fff; transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.btn--light { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.btn--light:hover { background: var(--copper); border-color: var(--copper); color: #fff; }
.btn--lg { min-height: 56px; padding: 0 34px; font-size: 15px; }
.btn--sm { min-height: 40px; padding: 0 16px; font-size: 13px; }
.btn--block { width: 100%; }

/* ---------------- 头部 ---------------- */
.header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(16, 21, 20, 0.92);
  backdrop-filter: blur(14px);
  color: var(--paper);
  border-bottom: 1px solid var(--line-dark);
}
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 28px; }
.logo { display: flex; align-items: center; gap: 12px; flex: none; }
.logo__mark {
  width: 40px; height: 40px; border: 1px solid rgba(255,255,255,.28);
  display: grid; place-items: center; font-size: 13px; letter-spacing: .1em;
  color: var(--paper); font-weight: 700;
}
.logo__text { line-height: 1.2; }
.logo__text b { display: block; font-size: 16px; letter-spacing: .08em; font-weight: 600; }
.logo__text span { display: block; font-size: 11px; color: var(--muted-light); letter-spacing: .12em; text-transform: uppercase; margin-top: 4px; }

.nav { display: flex; align-items: center; gap: 30px; font-size: 14px; }
.nav a { position: relative; padding: 6px 0; color: rgba(246,245,241,.86); }
.nav a:hover, .nav a.is-active { color: #fff; }
.nav a.is-active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px; background: var(--copper);
}
.header__tools { display: flex; align-items: center; gap: 14px; flex: none; }
.lang {
  display: inline-flex; align-items: center; height: 36px; padding: 0 12px;
  border: 1px solid var(--line-dark); font-size: 12px; letter-spacing: .1em;
  color: var(--paper); transition: border-color .2s, color .2s;
}
.lang:hover { border-color: var(--copper); color: var(--copper); }
.header .btn { min-height: 40px; padding: 0 18px; font-size: 13px; background: var(--copper); border-color: var(--copper); }
.header .btn:hover { background: var(--paper); color: var(--ink); border-color: var(--paper); }
.burger {
  display: none; width: 44px; height: 44px; border: 1px solid var(--line-dark);
  background: transparent; cursor: pointer; color: var(--paper);
  align-items: center; justify-content: center;
}
.burger span { display: block; width: 20px; height: 1px; background: currentColor; position: relative; }
.burger span::before, .burger span::after { content: ""; position: absolute; left: 0; width: 20px; height: 1px; background: currentColor; }
.burger span::before { top: -6px; } .burger span::after { top: 6px; }

.mobile-nav {
  display: none; background: var(--ink); color: var(--paper);
  border-top: 1px solid var(--line-dark);
}
.mobile-nav.is-open { display: block; }
.mobile-nav__list { padding: 8px 0 16px; }
.mobile-nav__list a { display: block; padding: 14px 0; border-bottom: 1px solid rgba(255,255,255,.08); font-size: 15px; }
.mobile-nav__cta { padding: 16px 0 24px; display: grid; gap: 10px; }

/* ---------------- 首屏 ---------------- */
.hero {
  position: relative; min-height: 660px; display: flex; align-items: flex-end;
  background: var(--ink); color: var(--paper); overflow: hidden;
}
.hero__media { position: absolute; inset: 0; }
.hero__media img { width: 100%; height: 100%; object-fit: cover; opacity: .55; transform: scale(1.02); }
.hero__media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(16,21,20,.55) 0%, rgba(16,21,20,.32) 42%, rgba(16,21,20,.92) 100%);
}
.hero__inner { position: relative; z-index: 2; width: 100%; padding: 120px 0 72px; }
.hero__kicker { display: flex; align-items: center; gap: 14px; font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: #e7b79c; }
.hero__kicker i { width: 34px; height: 1px; background: #e7b79c; display: block; }
.hero h1 {
  margin: 22px 0 0; max-width: 900px;
  font-size: clamp(34px, 5.2vw, 66px); line-height: 1.08; letter-spacing: -0.025em; font-weight: 600;
}
.hero h1 em { font-style: normal; color: #e7b79c; }
.hero__lead { margin: 26px 0 0; max-width: 560px; font-size: 17px; line-height: 1.8; color: rgba(246,245,241,.78); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 40px; }
.hero__stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px;
  margin-top: 64px; border-top: 1px solid rgba(255,255,255,.16); position: relative; z-index: 2;
}
.hero__stats div { padding: 22px 24px 0 0; }
.hero__stats b { display: block; font-size: 28px; font-weight: 600; letter-spacing: -.02em; }
.hero__stats span { display: block; margin-top: 4px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: rgba(246,245,241,.6); }

/* ---------------- 产品卡 ---------------- */
.grid-products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px 24px; }
.pcard { background: var(--white); border: 1px solid var(--line); display: flex; flex-direction: column; transition: transform .3s, box-shadow .3s, border-color .3s; }
.pcard:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--ink); }
.pcard__img { position: relative; aspect-ratio: 4 / 3; overflow: hidden; background: var(--paper-2); }
.pcard__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.pcard:hover .pcard__img img { transform: scale(1.05); }
.pcard__sku {
  position: absolute; left: 12px; top: 12px; padding: 4px 8px; font-size: 11px; letter-spacing: .08em;
  background: rgba(16,21,20,.82); color: #fff;
}
.pcard__body { padding: 20px 22px 24px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.pcard__name { font-size: 17px; font-weight: 600; line-height: 1.4; }
.pcard__sum { font-size: 13px; color: var(--muted); line-height: 1.6; flex: 1; }
.pcard__meta { display: flex; justify-content: space-between; align-items: center; margin-top: 6px; padding-top: 12px; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.pcard__meta .arrow { color: var(--copper); }

/* ---------------- 分类卡 ---------------- */
.grid-cats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.ccard { position: relative; overflow: hidden; min-height: 300px; display: flex; align-items: flex-end; color: #fff; background: var(--ink); }
.ccard img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: .62; transition: transform .6s, opacity .4s; }
.ccard:hover img { transform: scale(1.06); opacity: .72; }
.ccard::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(16,21,20,0) 30%, rgba(16,21,20,.9) 100%); }
.ccard__body { position: relative; z-index: 2; padding: 24px; width: 100%; }
.ccard__body b { font-size: 18px; display: block; }
.ccard__body span { font-size: 12px; color: rgba(255,255,255,.7); }

/* ---------------- 案例 ---------------- */
.grid-cases { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.kcard { background: var(--white); border: 1px solid var(--line); overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .3s, transform .3s; }
.kcard:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.kcard__img { aspect-ratio: 4 / 3; overflow: hidden; background: var(--paper-2); }
.kcard__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.kcard:hover .kcard__img img { transform: scale(1.04); }
.kcard__body { padding: 22px 24px 26px; }
.kcard__tag { font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--copper); }
.kcard__title { display: block; margin-top: 10px; font-size: 18px; font-weight: 600; line-height: 1.45; }
.kcard__sum { margin-top: 10px; font-size: 13px; color: var(--muted); line-height: 1.7; }

/* ---------------- 工厂 ---------------- */
.factory-split { display: grid; grid-template-columns: 1.15fr 1fr; gap: 56px; align-items: center; }
.factory-split__media { position: relative; }
.factory-split__media img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.factory-split__badge {
  position: absolute; right: -1px; bottom: -1px; background: var(--copper); color: #fff;
  padding: 18px 24px; font-size: 12px; letter-spacing: .12em; text-transform: uppercase;
}
.factory-list { margin: 28px 0 0; padding: 0; list-style: none; }
.factory-list li { display: flex; gap: 18px; padding: 18px 0; border-top: 1px solid var(--line); }
.factory-list li b { flex: none; width: 34px; font-size: 12px; color: var(--copper); padding-top: 3px; letter-spacing: .06em; }
.factory-list li p { margin: 0; font-size: 14px; color: var(--ink-3); }

/* ---------------- 行业 ---------------- */
.industries { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.ind { background: var(--white); padding: 30px 24px 34px; transition: background .25s, color .25s; }
.ind:hover { background: var(--ink); color: var(--paper); }
.ind b { font-size: 16px; display: block; }
.ind span { display: block; margin-top: 8px; font-size: 12px; color: var(--muted); line-height: 1.6; }
.ind:hover span { color: rgba(246,245,241,.65); }
.ind__no { font-size: 11px; letter-spacing: .1em; color: var(--copper); margin-bottom: 18px; display: block; }

/* ---------------- 列表页 ---------------- */
.page-head { padding: 72px 0 40px; border-bottom: 1px solid var(--line); }
.page-head h1 { margin: 14px 0 0; font-size: clamp(28px, 3.6vw, 44px); line-height: 1.15; letter-spacing: -.02em; }
.page-head p { margin: 16px 0 0; max-width: 720px; color: var(--muted); }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 12px; color: var(--muted); letter-spacing: .04em; }
.crumbs a:hover { color: var(--copper); }
.crumbs span { color: var(--line); }

.filters { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 26px 0; border-bottom: 1px solid var(--line); }
.filters__label { font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-right: 6px; }
.chip {
  display: inline-flex; align-items: center; min-height: 38px; padding: 0 16px;
  border: 1px solid var(--line); font-size: 13px; background: transparent; cursor: pointer;
  transition: all .2s; color: var(--ink);
}
.chip:hover { border-color: var(--ink); }
.chip.is-on { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.filters__right { margin-left: auto; display: flex; gap: 10px; align-items: center; }
select.sel {
  min-height: 40px; border: 1px solid var(--line); background: var(--white);
  padding: 0 12px; font-size: 13px; font-family: inherit; color: var(--ink); cursor: pointer;
}

.list-meta { display: flex; justify-content: space-between; align-items: center; padding: 22px 0; font-size: 13px; color: var(--muted); }

/* ---------------- 详情页 ---------------- */
.detail-hero { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; padding: 56px 0 64px; align-items: start; }
.gallery-main { background: var(--white); border: 1px solid var(--line); overflow: hidden; }
.gallery-main img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.thumbs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin-top: 10px; }
.thumbs button { padding: 0; border: 1px solid var(--line); background: none; cursor: pointer; overflow: hidden; aspect-ratio: 1; }
.thumbs button img { width: 100%; height: 100%; object-fit: cover; transition: opacity .2s; }
.thumbs button.is-on { border-color: var(--copper); }
.thumbs button:hover img { opacity: .8; }

.detail-info h1 { margin: 12px 0 0; font-size: clamp(26px, 3.2vw, 40px); line-height: 1.2; letter-spacing: -.02em; }
.detail-sku { display: inline-block; margin-top: 14px; padding: 4px 10px; background: var(--copper-soft); color: var(--copper-dark); font-size: 12px; letter-spacing: .08em; }
.detail-lead { margin: 20px 0 0; font-size: 16px; line-height: 1.8; color: var(--ink-3); }
.detail-attrs { margin: 26px 0 0; border-top: 1px solid var(--line); }
.detail-attrs div { display: flex; gap: 16px; padding: 13px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.detail-attrs dt, .detail-attrs span:first-child { flex: none; width: 96px; color: var(--muted); }
.detail-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }

.prose { max-width: 820px; }
.prose h2 { margin: 42px 0 14px; font-size: 22px; line-height: 1.4; letter-spacing: -.01em; }
.prose h3 { margin: 32px 0 10px; font-size: 18px; }
.prose p { margin: 0 0 16px; font-size: 15px; line-height: 1.9; color: var(--ink-3); }
.prose ul, .prose ol { margin: 0 0 18px; padding-left: 22px; }
.prose li { margin-bottom: 8px; font-size: 15px; line-height: 1.8; color: var(--ink-3); }
.prose table { width: 100%; border-collapse: collapse; margin: 20px 0 26px; font-size: 14px; background: var(--white); }
.prose th, .prose td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; vertical-align: top; }
.prose th { background: var(--paper-2); font-weight: 600; }
.prose a { color: var(--copper); border-bottom: 1px solid currentColor; }

.spec-table { width: 100%; border-collapse: collapse; font-size: 14px; background: var(--white); border: 1px solid var(--line); }
.spec-table tr:nth-child(odd) { background: #fbfaf7; }
.spec-table th, .spec-table td { padding: 14px 18px; text-align: left; border-bottom: 1px solid var(--line); }
.spec-table th { width: 42%; color: var(--muted); font-weight: 500; }

.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-q {
  width: 100%; text-align: left; background: none; border: 0; cursor: pointer;
  padding: 20px 0; font-size: 15px; font-family: inherit; color: var(--ink);
  display: flex; justify-content: space-between; gap: 16px; align-items: center; min-height: 44px;
}
.faq-q i { flex: none; width: 20px; height: 20px; position: relative; }
.faq-q i::before, .faq-q i::after { content: ""; position: absolute; background: var(--muted); }
.faq-q i::before { left: 0; top: 9px; width: 20px; height: 1px; }
.faq-q i::after { left: 9px; top: 0; width: 1px; height: 20px; transition: opacity .2s; }
.faq-item.is-open .faq-q i::after { opacity: 0; }
.faq-a { display: none; padding: 0 0 22px; font-size: 14px; line-height: 1.85; color: var(--ink-3); }
.faq-item.is-open .faq-a { display: block; }

/* ---------------- 询价表单 ---------------- */
.rfq { background: var(--white); border: 1px solid var(--line); padding: 40px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px 24px; }
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label { font-size: 13px; color: var(--ink-3); display: flex; gap: 6px; align-items: center; }
.field label em { font-style: normal; color: var(--copper); font-size: 12px; }
.field input[type="text"], .field input[type="email"], .field input[type="tel"], .field select, .field textarea {
  width: 100%; border: 1px solid var(--line); background: var(--paper); color: var(--ink);
  font-family: inherit; font-size: 16px; padding: 13px 14px; min-height: 48px;
  transition: border-color .2s, background .2s; border-radius: 0;
}
.field textarea { min-height: 130px; resize: vertical; line-height: 1.7; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--ink); background: #fff; }
.field input.is-error, .field textarea.is-error, .field select.is-error { border-color: #c0261e; background: #fdf4f3; }
.field__hint { font-size: 12px; color: var(--muted); }
.field__err { font-size: 12px; color: #c0261e; display: none; }
.field__err.is-on { display: block; }

.radio-row { display: flex; flex-wrap: wrap; gap: 10px; }
.radio-row label {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px;
  border: 1px solid var(--line); font-size: 14px; cursor: pointer; background: var(--paper);
}
.radio-row input { accent-color: var(--copper); }
.radio-row label.is-on { border-color: var(--ink); background: var(--white); }

.upload {
  border: 1px dashed var(--line); padding: 22px; text-align: center; background: var(--paper);
  cursor: pointer; transition: border-color .2s, background .2s;
}
.upload:hover { border-color: var(--copper); background: #fff; }
.upload input { display: none; }
.upload b { display: block; font-size: 14px; }
.upload span { display: block; margin-top: 6px; font-size: 12px; color: var(--muted); }
.upload-list { margin-top: 12px; display: grid; gap: 8px; }
.upload-list div { display: flex; justify-content: space-between; gap: 12px; font-size: 12px; padding: 8px 12px; background: var(--paper-2); }

.captcha-row { display: flex; gap: 12px; align-items: center; }
.captcha-row input { flex: 1; }
.captcha-img {
  height: 48px; min-width: 120px; border: 1px solid var(--line); cursor: pointer;
  display: grid; place-items: center; background: var(--paper-2);
  font-family: var(--font-serif); font-size: 20px; letter-spacing: .3em; user-select: none;
}
.form-foot { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-top: 28px; flex-wrap: wrap; }
.form-note { font-size: 12px; color: var(--muted); max-width: 460px; }
.form-msg { margin-top: 18px; padding: 14px 16px; font-size: 14px; display: none; }
.form-msg.is-on { display: block; }
.form-msg.is-err { background: #fdf1ef; border-left: 3px solid #c0261e; color: #8d1a14; }
.form-msg.is-ok { background: #f0f7f1; border-left: 3px solid #1f7a3f; color: #14572c; }

/* ---------------- 联系页 ---------------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 56px; align-items: start; }
.contact-block { border-top: 1px solid var(--line); padding: 22px 0; }
.contact-block dt { font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: var(--muted); }
.contact-block dd { margin: 8px 0 0; font-size: 17px; }
.contact-block dd a:hover { color: var(--copper); }
.map-frame { border: 1px solid var(--line); aspect-ratio: 16/10; background: var(--paper-2); overflow: hidden; }
.map-frame iframe { width: 100%; height: 100%; border: 0; }

/* ---------------- 页脚 ---------------- */
.footer { background: var(--ink); color: rgba(246,245,241,.78); padding: 76px 0 30px; }
.footer__grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.1fr; gap: 48px; }
.footer h4 { margin: 0 0 20px; font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: rgba(246,245,241,.5); font-weight: 600; }
.footer p { font-size: 14px; line-height: 1.8; margin: 0; }
.footer a { display: block; padding: 6px 0; font-size: 14px; }
.footer a:hover { color: var(--copper); }
.footer__brand b { display: block; font-size: 20px; color: var(--paper); letter-spacing: .02em; }
.footer__brand span { display: block; margin-top: 4px; font-size: 11px; letter-spacing: .14em; text-transform: uppercase; color: rgba(246,245,241,.45); }
.footer__contact div { display: flex; gap: 10px; padding: 5px 0; font-size: 14px; }
.footer__contact i { flex: none; width: 54px; color: rgba(246,245,241,.45); font-style: normal; font-size: 12px; }
.footer__bottom {
  display: flex; justify-content: space-between; gap: 18px; flex-wrap: wrap;
  margin-top: 56px; padding-top: 22px; border-top: 1px solid var(--line-dark);
  font-size: 12px; color: rgba(246,245,241,.45);
}

/* ---------------- 悬浮客服 ---------------- */
.float {
  position: fixed; right: 24px; bottom: 96px; z-index: 55;
  display: flex; flex-direction: column; gap: 8px;
}
.float a, .float button {
  width: 48px; height: 48px; display: grid; place-items: center; gap: 2px;
  background: var(--ink); color: #fff; border: 1px solid rgba(255,255,255,.14);
  font-size: 10px; letter-spacing: .02em; cursor: pointer; transition: background .2s, transform .2s;
  text-align: center; line-height: 1.2; padding: 4px;
}
.float a:hover, .float button:hover { background: var(--copper); transform: translateY(-2px); color: #fff; }
.float .ico { font-size: 15px; }
.mobile-bar {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 58;
  background: rgba(16,21,20,.97); border-top: 1px solid rgba(255,255,255,.12);
  padding: 6px 10px calc(6px + env(safe-area-inset-bottom));
  grid-template-columns: repeat(3, 1fr); gap: 6px;
}
.mobile-bar a {
  min-height: 44px; display: flex; flex-direction: column; align-items: center; justify-content: center;
  color: #fff; font-size: 12px; gap: 2px;
}
.mobile-bar a:first-child { background: var(--copper); }
.mobile-bar .ico { font-size: 15px; }

/* ---------------- Cookie ---------------- */
.cookie {
  position: fixed; left: 24px; right: 24px; bottom: 24px; z-index: 70;
  background: rgba(16,21,20,.96); color: var(--paper); padding: 20px 24px;
  display: none; align-items: center; gap: 20px; flex-wrap: wrap;
  border: 1px solid rgba(255,255,255,.14); box-shadow: var(--shadow); max-width: 980px;
}
.cookie.is-on { display: flex; }
.cookie__text { flex: 1; min-width: 240px; font-size: 13px; line-height: 1.7; }
.cookie__text b { display: block; font-size: 14px; margin-bottom: 4px; }
.cookie__text a { color: #e7b79c; border-bottom: 1px solid currentColor; }
.cookie__actions { display: flex; gap: 10px; flex-wrap: wrap; }
.cookie .btn { min-height: 42px; padding: 0 16px; font-size: 13px; }
.cookie .btn--light { background: var(--paper); color: var(--ink); }
.cookie .btn--ghost { color: var(--paper); border-color: rgba(255,255,255,.3); background: transparent; }

/* ---------------- 空状态 / 分页 ---------------- */
.empty { padding: 80px 0; text-align: center; color: var(--muted); }
.pager { display: flex; justify-content: center; gap: 8px; padding: 48px 0 0; }
.pager a, .pager span {
  min-width: 44px; height: 44px; display: grid; place-items: center;
  border: 1px solid var(--line); font-size: 13px; background: var(--white);
}
.pager a:hover { border-color: var(--ink); }
.pager .is-on { background: var(--ink); color: var(--paper); border-color: var(--ink); }

/* ---------------- 结构件 ---------------- */
.kv-band { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); margin-top: 40px; }
.kv-band div { background: var(--white); padding: 26px 24px; }
.kv-band b { display: block; font-size: 24px; }
.kv-band span { display: block; margin-top: 6px; font-size: 12px; color: var(--muted); }

.cert-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.cert { background: var(--white); border: 1px solid var(--line); padding: 18px; }
.cert img { width: 100%; aspect-ratio: 4/3; object-fit: contain; background: var(--paper-2); }
.cert b { display: block; margin-top: 14px; font-size: 15px; }
.cert span { display: block; margin-top: 4px; font-size: 12px; color: var(--muted); }

.media-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.media-grid figure { margin: 0; background: var(--white); border: 1px solid var(--line); }
.media-grid img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.media-grid figcaption { padding: 16px 18px 20px; }
.media-grid b { display: block; font-size: 15px; }
.media-grid span { display: block; margin-top: 6px; font-size: 13px; color: var(--muted); }

/* ---------------- 资讯 ---------------- */
.news-lead { display: grid; grid-template-columns: 1.2fr 1fr; gap: 40px; align-items: stretch; margin-bottom: 48px; }
.news-lead__img { overflow: hidden; background: var(--paper-2); }
.news-lead__img img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 16/10; }
.news-lead__body { display: flex; flex-direction: column; justify-content: center; }
.news-lead__body h3 { margin: 12px 0 0; font-size: clamp(22px, 2.6vw, 32px); line-height: 1.3; }
.news-lead__body p { margin: 14px 0 0; color: var(--muted); font-size: 14px; }
.news-list { display: grid; gap: 1px; background: var(--line); border-top: 1px solid var(--line); }
.news-row { background: var(--paper); display: grid; grid-template-columns: 140px 1fr 140px; gap: 28px; padding: 26px 6px; align-items: center; }
.news-row:hover { background: var(--white); }
.news-row time { font-size: 12px; color: var(--muted); letter-spacing: .06em; }
.news-row b { font-size: 16px; }
.news-row p { margin: 6px 0 0; font-size: 13px; color: var(--muted); }
.news-row span.tag { justify-self: end; font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--copper); }

/* ---------------- 站内导航 ---------------- */
.navmap { display: grid; grid-template-columns: repeat(4, 1fr); gap: 40px; }
.navmap div b { display: block; font-size: 12px; letter-spacing: .14em; text-transform: uppercase; color: var(--copper); margin-bottom: 14px; }
.navmap div a { display: block; padding: 7px 0; font-size: 14px; border-bottom: 1px solid var(--line); }

/* ---------------- 404 ---------------- */
.center-page { padding: 120px 0 140px; text-align: center; }
.center-page h1 { font-size: clamp(28px, 4vw, 46px); margin: 16px 0 0; }
.center-page p { color: var(--muted); margin: 16px auto 0; max-width: 520px; }
.center-page .actions { display: flex; gap: 12px; justify-content: center; margin-top: 32px; flex-wrap: wrap; }

/* ---------------- 成功页 ---------------- */
.success { max-width: 620px; margin: 0 auto; text-align: center; padding: 100px 0 120px; }
.success__mark {
  width: 68px; height: 68px; margin: 0 auto; border: 1px solid var(--copper); color: var(--copper);
  display: grid; place-items: center; font-size: 26px;
}
.success h1 { margin: 26px 0 0; font-size: 32px; }
.success p { color: var(--muted); margin: 16px 0 0; line-height: 1.85; }
.success .actions { display: flex; gap: 12px; justify-content: center; margin-top: 32px; flex-wrap: wrap; }
.success__next { margin-top: 44px; border-top: 1px solid var(--line); padding-top: 24px; font-size: 13px; color: var(--muted); }

/* ==========================================================================
   响应式
   ========================================================================== */

@media (max-width: 1399px) {
  :root { --gap: 28px; }
  .wrap { padding: 0 32px; }
  .grid-products { gap: 24px 20px; }
  .footer__grid { gap: 36px; }
}

@media (max-width: 1199px) {
  .nav { gap: 22px; font-size: 13px; }
  .hero { min-height: 560px; }
  .detail-hero { gap: 36px; padding: 40px 0 52px; }
  .factory-split { gap: 36px; }
  .contact-grid { gap: 36px; }
  .industries { grid-template-columns: repeat(3, 1fr); }
  .grid-products { grid-template-columns: repeat(3, 1fr); }
  .grid-cases { grid-template-columns: repeat(2, 1fr); }
  .navmap { grid-template-columns: repeat(3, 1fr); gap: 32px; }
}

@media (max-width: 991px) {
  .wrap { padding: 0 24px; }
  .nav { display: none; }
  .header__tools .btn { display: none; }
  .burger { display: flex; }
  .header__inner { height: 64px; }
  .sec { padding: 72px 0; }
  .hero h1 { font-size: clamp(30px, 5.6vw, 48px); }
  .hero__stats { grid-template-columns: repeat(2, 1fr); margin-top: 48px; }
  .grid-cats { grid-template-columns: repeat(2, 1fr); }
  .detail-hero { grid-template-columns: 1fr; }
  .factory-split { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .news-lead { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .float { display: none; }
  .mobile-bar { display: grid; }
  body { padding-bottom: 62px; }
  .cookie { bottom: 74px; left: 12px; right: 12px; }
  .form-grid { gap: 16px 18px; }
}

@media (max-width: 767px) {
  .sec { padding: 56px 0; }
  .sec-head { align-items: flex-start; flex-direction: column; gap: 12px; margin-bottom: 28px; }
  .hero { min-height: 0; }
  .hero__inner { padding: 88px 0 48px; }
  .hero__lead { font-size: 15px; }
  .grid-products { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .grid-cases { grid-template-columns: 1fr; gap: 20px; }
  .industries { grid-template-columns: repeat(2, 1fr); }
  .kv-band { grid-template-columns: repeat(2, 1fr); }
  .media-grid { grid-template-columns: 1fr; }
  .spec-table { font-size: 13px; }
  .spec-table th, .spec-table td { padding: 11px 12px; }
  .news-row { grid-template-columns: 1fr; gap: 8px; padding: 20px 4px; }
  .news-row span.tag { justify-self: start; }
  .rfq { padding: 24px 20px; }
  .form-grid { grid-template-columns: 1fr; }
  .page-head { padding: 48px 0 28px; }
  .navmap { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .footer { padding: 56px 0 24px; }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .pager a, .pager span { min-width: 40px; height: 40px; }
}

@media (max-width: 479px) {
  .wrap { padding: 0 18px; }
  .header__inner { height: 58px; }
  .logo__text b { font-size: 14px; }
  .logo__mark { width: 34px; height: 34px; font-size: 11px; }
  .hero h1 { font-size: 30px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { width: 100%; }
  .hero__stats { grid-template-columns: 1fr 1fr; gap: 0; }
  .hero__stats b { font-size: 22px; }
  .grid-products { grid-template-columns: 1fr; }
  .grid-cats { grid-template-columns: 1fr; }
  .industries { grid-template-columns: 1fr; }
  .kv-band { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .thumbs { grid-template-columns: repeat(3, 1fr); }
  .radio-row label { flex: 1 1 100%; }
  .detail-actions .btn { flex: 1 1 100%; }
  .mobile-bar a { font-size: 11px; }
  .navmap { grid-template-columns: 1fr; }
}

@media (max-width: 374px) {
  .wrap { padding: 0 14px; }
  .hero h1 { font-size: 26px; }
  .detail-lead, .prose p, .prose li { font-size: 14px; }
  .spec-table { display: block; overflow-x: auto; white-space: nowrap; }
  .cookie__actions .btn { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}

/* 打印 */
@media print {
  .header, .footer, .float, .mobile-bar, .cookie, .filters { display: none !important; }
  body { background: #fff; }
}

/* 关于我们页顶部的能力带 */
.about-band {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  padding: 36px 0 44px;
}
.about-band__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.about-band__stats > div {
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-right: 1px solid var(--line);
}
.about-band__stats > div:last-child { border-right: 0; }
.about-band__stats b {
  font-family: var(--font-serif);
  font-size: 34px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--copper);
  font-weight: 600;
}
.about-band__stats span {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--muted);
  text-transform: uppercase;
}
.about-band__shots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 28px;
  background: var(--line);
  border: 1px solid var(--line);
}
.about-band__shots figure {
  margin: 0;
  background: var(--white);
  display: flex;
  flex-direction: column;
}
.about-band__shots img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}
.about-band__shots figcaption {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
  padding: 12px 16px 14px;
  border-top: 1px solid var(--line);
}

/* 首段做导语处理，长文不再一上来就糊成一片 */
.prose > p:first-child {
  font-size: 16.5px;
  line-height: 2;
  color: var(--ink-2);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 26px;
}
.prose table { border: 1px solid var(--line); }
.prose tbody tr:nth-child(even) { background: #fbfaf7; }
.prose td:first-child { font-weight: 600; color: var(--ink-2); white-space: nowrap; }

@media (max-width: 1100px) {
  .about-band__shots { grid-template-columns: repeat(2, 1fr); }
  .about-band__shots figure:last-child { grid-column: span 2; }
  .about-band__shots figure:last-child img { aspect-ratio: 16 / 7; }
}
@media (max-width: 760px) {
  .about-band { padding: 26px 0 32px; }
  .about-band__stats { grid-template-columns: repeat(2, 1fr); }
  .about-band__stats > div { padding: 16px 16px 18px; border-right: 1px solid var(--line); }
  .about-band__stats > div:nth-child(2n) { border-right: 0; }
  .about-band__stats > div:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }
  .about-band__stats b { font-size: 27px; }
  .about-band__shots { grid-template-columns: 1fr; }
  .about-band__shots figure:last-child { grid-column: auto; }
  .about-band__shots figure:last-child img,
  .about-band__shots img { aspect-ratio: 16 / 10; }
  .prose > p:first-child { font-size: 15.5px; }
  .prose td:first-child { white-space: normal; }
}
/* —— 静态页排版优化（关于我们 / 质量管控 / 设备与产线）—— */
.page-head p { font-size: 15.5px; line-height: 1.85; }

/* 正文列居中，长文不再贴着左边 */
.prose {
  max-width: 880px;
  margin: 0 auto;
}

/* 每个 h2 视为一个小节：加一条细线，长页面有节奏感 */
.prose h2 {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid var(--line);
  margin-top: 46px;
}
.prose h2:first-child { border-top: 0; padding-top: 0; }
.prose h2::after {
  content: '';
  position: absolute;
  left: 0;
  top: -1px;
  width: 48px;
  height: 2px;
  background: var(--copper);
}
.prose h2:first-child::after { display: none; }

.prose strong { color: var(--ink-2); font-weight: 600; }

/* 表格：小屏可横向滑动，不撑破页面 */
.prose table { table-layout: auto; }
@media (max-width: 760px) {
  .prose { max-width: 100%; }
  .prose h2 { font-size: 20px; margin-top: 36px; }
  .prose table { font-size: 12.5px; }
  .prose th, .prose td { padding: 9px 10px; }
  .prose td:first-child { white-space: normal; }
  .prose ul, .prose ol { padding-left: 18px; }
}

@media (min-width: 992px) {
  .prose { padding: 0; }
}