/* ============================================================
   YUEHAI MACHINERY — 工业装备站样式
   ============================================================ */

:root {
  --navy: #0a1b2e;
  --navy-2: #102a42;
  --navy-3: #1b3a55;
  --ink: #16202b;
  --body: #4a5a6b;
  --muted: #7d8b9b;
  --line: #e4e9ef;
  --line-soft: #eef2f6;
  --bg: #ffffff;
  --bg-soft: #f6f8fa;
  --orange: #e8622a;
  --orange-dark: #c44f1d;
  --orange-soft: #fdf1ea;

  --radius: 4px;
  --radius-lg: 8px;
  --shadow-sm: 0 2px 8px rgba(10, 27, 46, 0.05);
  --shadow-md: 0 10px 30px rgba(10, 27, 46, 0.09);
  --shadow-lg: 0 24px 60px rgba(10, 27, 46, 0.14);
  --wrap: 1240px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--body);
  font-family: "Inter", -apple-system, "PingFang SC", "HarmonyOS Sans SC",
    "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 600;
  line-height: 1.28;
  margin: 0;
  letter-spacing: -0.01em;
}

p { margin: 0; }

::selection { background: var(--orange); color: #fff; }

/* ---------- 布局工具 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 32px;
}

.section { padding: 96px 0; }
.section--tight { padding: 72px 0; }
.section--soft { background: var(--bg-soft); }

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 52px;
}
.section-head__left { max-width: 640px; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 16px;
}
.eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--orange);
}

.section-title {
  font-size: clamp(28px, 3.4vw, 42px);
  letter-spacing: -0.02em;
}
.section-desc {
  margin-top: 16px;
  font-size: 16px;
  color: var(--body);
  max-width: 560px;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 28px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all 0.28s var(--ease);
  white-space: nowrap;
}
.btn svg { width: 15px; height: 15px; transition: transform 0.28s var(--ease); }
.btn:hover svg { transform: translateX(4px); }

.btn--primary {
  background: var(--orange);
  color: #fff;
  box-shadow: 0 8px 20px rgba(232, 98, 42, 0.28);
}
.btn--primary:hover {
  background: var(--orange-dark);
  box-shadow: 0 12px 26px rgba(232, 98, 42, 0.34);
  transform: translateY(-1px);
}

.btn--ghost {
  border-color: rgba(255, 255, 255, 0.28);
  color: #fff;
}
.btn--ghost:hover { border-color: #fff; background: rgba(255, 255, 255, 0.08); }

.btn--line {
  border-color: var(--line);
  color: var(--ink);
  background: #fff;
}
.btn--line:hover { border-color: var(--ink); }

.btn--sm { padding: 11px 20px; font-size: 13px; }

/* ---------- 顶部条 ---------- */
.topbar {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.62);
  font-size: 12.5px;
  letter-spacing: 0.02em;
}
.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 40px;
  gap: 24px;
}
.topbar__list { display: flex; align-items: center; gap: 26px; }
.topbar__item { display: inline-flex; align-items: center; gap: 8px; }
.topbar__item svg { width: 13px; height: 13px; opacity: 0.7; }
.topbar__item a:hover { color: #fff; }
.topbar__right { display: flex; align-items: center; gap: 18px; }
.lang {
  display: inline-flex;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 3px;
  overflow: hidden;
}
.lang span,
.lang a {
  padding: 2px 10px;
  font-size: 11.5px;
  cursor: pointer;
  transition: background 0.2s;
  color: inherit;
  text-decoration: none;
}
.lang span.on { background: rgba(255, 255, 255, 0.14); color: #fff; }
.lang span:hover,
.lang a:hover { color: #fff; }

/* ---------- 导航 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}
.header__inner {
  display: flex;
  align-items: center;
  gap: 40px;
  height: 78px;
}

.logo { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.logo__mark { display: block; line-height: 0; }
.logo__mark img { height: 42px; width: auto; display: block; }
.logo__text { display: flex; flex-direction: column; line-height: 1.1; }
.logo__name {
  font-size: 17px; font-weight: 700; color: var(--navy);
  letter-spacing: 0.04em;
}
.logo__sub {
  font-size: 9.5px; letter-spacing: 0.22em; color: var(--muted);
  text-transform: uppercase; margin-top: 3px;
}

.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav > a {
  position: relative;
  padding: 10px 16px;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink);
  border-radius: 4px;
  transition: color 0.2s;
}
.nav > a::after {
  content: "";
  position: absolute;
  left: 16px; right: 16px; bottom: 4px;
  height: 2px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}
.nav > a:hover { color: var(--orange); }
.nav > a:hover::after,
.nav > a.is-active::after { transform: scaleX(1); }
.nav > a.is-active { color: var(--orange); }

.header__cta { margin-left: 8px; }

.burger {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 4px;
  padding: 0;
  place-items: center;
}
.burger span {
  display: block;
  width: 18px; height: 1.6px;
  background: var(--ink);
  position: relative;
}
.burger span::before,
.burger span::after {
  content: ""; position: absolute; left: 0;
  width: 18px; height: 1.6px; background: var(--ink);
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }

/* ---------- 首屏 ---------- */
.hero {
  position: relative;
  background: var(--navy);
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(1200px 600px at 78% 18%, rgba(232, 98, 42, 0.16), transparent 62%),
    radial-gradient(900px 500px at 10% 92%, rgba(43, 108, 168, 0.22), transparent 60%),
    linear-gradient(180deg, #0a1b2e 0%, #0d2337 100%);
}
.hero__grid-lines {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(circle at 60% 40%, #000 10%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 60% 40%, #000 10%, transparent 78%);
}
.hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 64px;
  align-items: center;
  padding: 104px 0 96px;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px 6px 8px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 100px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 30px;
}
.hero__badge b {
  background: var(--orange);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 100px;
  letter-spacing: 0.04em;
}
.hero h1 {
  color: #fff;
  font-size: clamp(38px, 4.6vw, 62px);
  line-height: 1.14;
  letter-spacing: -0.025em;
  font-weight: 600;
}
.hero h1 em {
  font-style: normal;
  color: var(--orange);
}
.hero__lede {
  margin-top: 26px;
  font-size: 16.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.68);
  max-width: 540px;
}
.hero__actions { display: flex; gap: 14px; margin-top: 40px; flex-wrap: wrap; }

.hero__visual { position: relative; }
.hero__svg { width: 100%; height: auto; display: block; }
.hero__img {
  display: block;
  width: min(100%, 310px);
  height: auto;
  margin: 0 auto;
}

.hero__stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.hero__stat {
  padding: 30px 0 34px;
  border-right: 1px solid rgba(255, 255, 255, 0.08);
}
.hero__stat:last-child { border-right: 0; }
.hero__stat b {
  display: block;
  font-size: 34px;
  font-weight: 600;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1;
}
.hero__stat b span { color: var(--orange); font-size: 20px; }
.hero__stat small {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.02em;
}

/* ---------- 5A 优势 ---------- */
.adv {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.adv__item {
  padding: 36px 28px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 0.3s var(--ease);
}
.adv__item:hover { background: var(--bg-soft); }
.adv__num {
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0.16em;
}
.adv__item h3 {
  font-size: 17px;
  margin: 14px 0 8px;
}
.adv__item p { font-size: 13.5px; line-height: 1.7; color: var(--body); }

/* ---------- 产品分类 ---------- */
.cats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.cat {
  position: relative;
  background: #fff;
  padding: 34px 30px 30px;
  min-height: 210px;
  display: flex;
  flex-direction: column;
  transition: background 0.35s var(--ease);
  overflow: hidden;
}
.cat::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}
.cat:hover { background: var(--navy); }
.cat:hover::after { transform: scaleX(1); }
.cat:hover h3, .cat:hover .cat__count { color: #fff; }
.cat:hover p { color: rgba(255, 255, 255, 0.6); }
.cat:hover .cat__icon { color: var(--orange); opacity: 1; transform: translateY(-2px); }

.cat__icon {
  width: 34px; height: 34px;
  color: var(--navy);
  opacity: 0.85;
  transition: all 0.35s var(--ease);
  margin-bottom: auto;
}
.cat h3 { font-size: 18px; margin-top: 26px; transition: color 0.3s; }
.cat p { font-size: 13px; color: var(--muted); margin-top: 6px; transition: color 0.3s; }
.cat__count {
  position: absolute;
  top: 32px; right: 30px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.08em;
  transition: color 0.3s;
}

/* ---------- 产品卡片 ---------- */
.grid-products {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.grid-products--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  position: relative;
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all 0.35s var(--ease);
}
.card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--navy);
}
.ph {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    linear-gradient(140deg, #16354f 0%, #0d2135 60%, #0a1b2e 100%);
}
.ph::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 76%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 20%, transparent 76%);
}
.ph svg {
  width: 46%;
  max-width: 150px;
  color: rgba(255, 255, 255, 0.34);
  transition: all 0.45s var(--ease);
  position: relative;
}
.ph--warm { background: linear-gradient(140deg, #3c2a1e 0%, #241a14 70%); }
.ph--cool { background: linear-gradient(140deg, #14384e 0%, #0b2233 70%); }
.ph--steel { background: linear-gradient(140deg, #2b3a46 0%, #18242d 70%); }

.card:hover .ph svg { color: var(--orange); transform: scale(1.06); opacity: 0.9; }

.card__body {
  padding: 24px 24px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.card__cat {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
  margin-bottom: 10px;
}
.card__title {
  font-size: 16.5px;
  line-height: 1.45;
  color: var(--ink);
  font-weight: 600;
}
.card__en {
  font-size: 12.5px;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.5;
}
.card__meta {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 14px;
  font-size: 12.5px;
  color: var(--muted);
}
.card__meta span { display: inline-flex; align-items: center; gap: 6px; }
.card__meta i {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--orange);
  display: inline-block;
}

.card__link {
  position: absolute;
  inset: 0;
  z-index: 2;
}
.card__more {
  margin-top: 18px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink);
  transition: gap 0.25s var(--ease), color 0.25s;
}
.card__more svg { width: 14px; height: 14px; }
.card:hover .card__more { color: var(--orange); gap: 12px; }

/* ---------- 服务流程 ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  counter-reset: step;
}
.step {
  position: relative;
  padding: 0 32px 0 0;
}
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--orange);
  margin-bottom: 18px;
}
.step::after {
  content: "";
  position: absolute;
  top: 8px; right: 24px; left: 46px;
  height: 1px;
  background: var(--line);
}
.step:last-child::after { display: none; }
.step h3 { font-size: 17px; margin-bottom: 10px; }
.step p { font-size: 13.5px; line-height: 1.75; }

/* ---------- 数据/客户区 ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.country-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 36px;
}
.country {
  background: #fff;
  padding: 18px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  color: var(--ink);
  transition: background 0.25s;
}
.country:hover { background: var(--bg-soft); }
.country em {
  font-style: normal;
  font-size: 12px;
  color: var(--muted);
}

/* ---------- 新闻 ---------- */
.news-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.news {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 26px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s, padding 0.3s var(--ease);
}
.news:hover { background: var(--bg-soft); padding-left: 16px; padding-right: 16px; }
.news time {
  font-size: 12.5px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.news h3 { font-size: 16.5px; font-weight: 500; line-height: 1.5; }
.news:hover h3 { color: var(--orange); }
.news__arrow { color: var(--muted); }
.news__arrow svg { width: 18px; height: 18px; }
.news__hl { color: #1a56db; font-weight: 600; }
.news__src { display: block; margin-top: 4px; font-size: 12px; color: var(--muted); font-weight: 400; }

/* ---------- CTA 横幅 ---------- */
.cta-band {
  position: relative;
  background: var(--navy);
  overflow: hidden;
  padding: 80px 0;
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(800px 400px at 85% 20%, rgba(232, 98, 42, 0.2), transparent 65%),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: auto, 64px 64px;
}
.cta-band__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 48px;
}
.cta-band h2 { color: #fff; font-size: clamp(26px, 3vw, 38px); }
.cta-band p { color: rgba(255, 255, 255, 0.6); margin-top: 12px; font-size: 15.5px; }
.cta-band__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 页脚 ---------- */
.footer {
  background: #071524;
  color: rgba(255, 255, 255, 0.55);
  padding: 72px 0 0;
  font-size: 14px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.4fr;
  gap: 56px;
  padding-bottom: 56px;
}
.footer .logo__name { color: #fff; }
.footer .logo__sub { color: rgba(255, 255, 255, 0.4); }
.footer__about { margin-top: 22px; line-height: 1.85; font-size: 13.5px; max-width: 320px; }
.footer h4 {
  color: #fff;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 22px;
  font-weight: 600;
}
.footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; }
.footer ul a { font-size: 13.5px; transition: color 0.2s; }
.footer ul a:hover { color: var(--orange); }
.footer__contact { display: grid; gap: 14px; font-size: 13.5px; line-height: 1.7; }
.footer__contact b { color: rgba(255, 255, 255, 0.85); font-weight: 500; }
.footer__contact a { color: inherit; border-bottom: 1px solid rgba(255, 255, 255, 0.16); transition: color 0.2s, border-color 0.2s; }
.footer__contact a:hover { color: #fff; border-color: var(--orange); }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 22px 0 28px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.38);
  flex-wrap: wrap;
}
.footer__bottom a:hover { color: rgba(255, 255, 255, 0.7); }

/* ---------- 内页横幅 ---------- */
.page-hero {
  position: relative;
  background: var(--navy);
  padding: 64px 0 56px;
  overflow: hidden;
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(700px 340px at 82% 10%, rgba(232, 98, 42, 0.16), transparent 65%),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: auto, 64px 64px;
}
.page-hero__inner { position: relative; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 18px;
}
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { opacity: 0.4; }
.page-hero h1 {
  color: #fff;
  font-size: clamp(30px, 3.6vw, 44px);
  letter-spacing: -0.02em;
}
.page-hero p {
  color: rgba(255, 255, 255, 0.58);
  margin-top: 14px;
  max-width: 620px;
  font-size: 15.5px;
}

/* ---------- 产品中心布局 ---------- */
.catalog {
  display: grid;
  grid-template-columns: 248px 1fr;
  gap: 56px;
  align-items: start;
  padding: 64px 0 96px;
}

.side { position: sticky; top: 100px; }
.side__block + .side__block { margin-top: 40px; }
.side__title {
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 16px;
  font-weight: 600;
}
.side__nav { display: grid; gap: 2px; }
.side__nav button {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 12px;
  padding: 12px 14px;
  background: transparent;
  border: 0;
  border-left: 2px solid transparent;
  color: var(--body);
  font-size: 14px;
  text-align: left;
  transition: all 0.22s var(--ease);
}
.side__nav button em {
  font-style: normal;
  font-size: 12px;
  color: var(--muted);
}
.side__nav button:hover { background: var(--bg-soft); color: var(--ink); }
.side__nav button.on {
  background: var(--bg-soft);
  border-left-color: var(--orange);
  color: var(--ink);
  font-weight: 600;
}
.side__nav button.on em { color: var(--orange); }

.side__card {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.62);
  padding: 28px 24px;
  border-radius: var(--radius-lg);
  background-image: radial-gradient(280px 160px at 90% 0%, rgba(232, 98, 42, 0.28), transparent 70%);
}
.side__card h4 { color: #fff; font-size: 16px; margin-bottom: 10px; }
.side__card p { font-size: 13px; line-height: 1.7; margin-bottom: 18px; }
.side__card .btn { width: 100%; justify-content: center; }

.catalog__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.catalog__count { font-size: 13.5px; color: var(--muted); }
.catalog__count b { color: var(--ink); font-weight: 600; }
.search {
  position: relative;
  width: 260px;
}
.search input {
  width: 100%;
  padding: 11px 14px 11px 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13.5px;
  font-family: inherit;
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  background: #fff;
}
.search input:focus {
  border-color: var(--navy-3);
  box-shadow: 0 0 0 3px rgba(16, 42, 66, 0.07);
}
.search svg {
  position: absolute;
  left: 13px; top: 50%;
  transform: translateY(-50%);
  width: 15px; height: 15px;
  color: var(--muted);
}

.pager {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 56px;
}
.pager button {
  min-width: 40px;
  height: 40px;
  padding: 0 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--body);
  font-size: 13.5px;
  transition: all 0.2s;
}
.pager button:hover { border-color: var(--navy); color: var(--ink); }
.pager button.on { background: var(--navy); border-color: var(--navy); color: #fff; }

/* ---------- 产品详情 ---------- */
.detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  padding: 64px 0 0;
  align-items: start;
}
.gallery__main {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--navy);
  border: 1px solid var(--line);
}
.gallery__thumbs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 12px;
}
.thumb {
  position: relative;
  aspect-ratio: 1;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--navy);
  padding: 0;
  transition: border-color 0.2s;
}
.thumb.on { border: 2px solid var(--orange); }
.thumb .ph svg { width: 52%; }

.detail__info .card__cat { margin-bottom: 12px; }
.detail__info h1 {
  font-size: clamp(24px, 2.6vw, 32px);
  line-height: 1.32;
}
.detail__en {
  font-size: 13.5px;
  color: var(--muted);
  margin-top: 8px;
}
.detail__desc {
  margin-top: 22px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-size: 14.5px;
  line-height: 1.85;
}
.spec-list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.spec-list li {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 13.5px;
}
.spec-list b { color: var(--ink); font-weight: 500; }
.detail__actions { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 32px;
  font-size: 14px;
}
.spec-table th, .spec-table td {
  text-align: left;
  padding: 14px 18px;
  border: 1px solid var(--line);
}
.spec-table th {
  background: var(--bg-soft);
  color: var(--ink);
  font-weight: 600;
  width: 32%;
}
.spec-table td { color: var(--body); }

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-top: 36px;
}
.feature {
  background: #fff;
  padding: 30px 26px;
}
.feature svg { width: 26px; height: 26px; color: var(--orange); margin-bottom: 16px; }
.feature h3 { font-size: 15.5px; margin-bottom: 8px; }
.feature p { font-size: 13.5px; line-height: 1.7; }

.form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 32px;
}
.form__full { grid-column: 1 / -1; }
.form label {
  display: block;
  font-size: 12.5px;
  color: var(--muted);
  margin-bottom: 6px;
  letter-spacing: 0.03em;
}
.form input, .form textarea, .form select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 14px;
  color: var(--ink);
  outline: none;
  background: #fff;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form input:focus, .form textarea:focus, .form select:focus {
  border-color: var(--navy-3);
  box-shadow: 0 0 0 3px rgba(16, 42, 66, 0.07);
}
.form textarea { resize: vertical; min-height: 120px; }

/* ---------- 常见问题 ---------- */
.faq {
  border-top: 1px solid var(--line);
}
.faq details {
  border-bottom: 1px solid var(--line);
}
.faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 4px;
  cursor: pointer;
  list-style: none;
  transition: padding 0.3s var(--ease), background 0.25s;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary:hover { background: var(--bg-soft); padding-left: 16px; padding-right: 16px; }
.faq summary h3 {
  font-size: 16.5px;
  font-weight: 500;
  line-height: 1.55;
  margin: 0;
}
.faq summary::after {
  content: "";
  flex-shrink: 0;
  width: 11px;
  height: 11px;
  border-right: 1.5px solid var(--muted);
  border-bottom: 1.5px solid var(--muted);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease);
  margin-top: -4px;
}
.faq details[open] summary::after {
  transform: rotate(-135deg) translate(-3px, -3px);
  border-color: var(--orange);
}
.faq details[open] summary h3 { color: var(--orange); }
.faq__body {
  padding: 0 4px 28px;
  max-width: 880px;
  font-size: 14.5px;
  line-height: 1.9;
  color: var(--body);
}

/* ---------- 动效 ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

.to-top {
  position: fixed;
  right: 28px; bottom: 28px;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: var(--navy);
  color: #fff;
  border: 0;
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: all 0.3s var(--ease);
  z-index: 80;
}
.to-top.show { opacity: 1; pointer-events: auto; transform: none; }
.to-top:hover { background: var(--orange); }
.to-top svg { width: 16px; height: 16px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1100px) {
  .hero__inner { grid-template-columns: 1fr; gap: 48px; padding: 72px 0 64px; }
  .hero__visual { display: none; }
  .adv { grid-template-columns: repeat(3, 1fr); }
  .header__inner { height: 70px; gap: 20px; }
  .nav > a { padding: 10px 12px; font-size: 14px; }
  .header__cta { display: none; }
}

@media (max-width: 900px) {
  .section { padding: 72px 0; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 20px; margin-bottom: 40px; }
  .grid-products, .grid-products--4 { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .cats { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); gap: 36px 0; }
  .step::after { display: none; }
  .split { grid-template-columns: 1fr; gap: 40px; }
  .footer__top { grid-template-columns: 1fr 1fr; gap: 40px; }
  .catalog { grid-template-columns: 1fr; gap: 32px; padding: 40px 0 72px; }
  .side { position: static; }
  .side__nav { display: flex; flex-wrap: wrap; gap: 8px; }
  .side__nav button {
    border: 1px solid var(--line);
    border-radius: 100px;
    padding: 8px 16px;
    width: auto;
  }
  .side__nav button.on { background: var(--navy); border-color: var(--navy); color: #fff; }
  .side__nav button.on em { color: rgba(255, 255, 255, 0.55); }
  .side__card { display: none; }
  .detail { grid-template-columns: 1fr; gap: 40px; padding-top: 40px; }
  .feature-grid { grid-template-columns: 1fr; }
  .cta-band__inner { flex-direction: column; align-items: flex-start; }
  .topbar__list .hide-sm { display: none; }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    inset: 70px 0 auto 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 20px 20px;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow-md);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: all 0.28s var(--ease);
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav > a { padding: 14px 4px; border-bottom: 1px solid var(--line-soft); }
  .nav > a::after { display: none; }
  .burger { display: grid; margin-left: auto; }
}

@media (max-width: 640px) {
  .wrap { padding: 0 20px; }

  .hero { padding-bottom: 0; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
  .hero__stat { padding: 22px 0; }
  .hero__stat:nth-child(2) { border-right: 0; }
  .hero__stat b { font-size: 28px; }
  .adv { grid-template-columns: 1fr; }
  .cats { grid-template-columns: 1fr; }
  .grid-products, .grid-products--4 { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; gap: 30px; }
  .country-list { grid-template-columns: 1fr; }
  .news { grid-template-columns: 1fr; gap: 8px; }
  .news__arrow { display: none; }
  .footer__top { grid-template-columns: 1fr; }
  .catalog__bar { flex-direction: column; align-items: stretch; }
  .search { width: 100%; }
  .form { grid-template-columns: 1fr; }
  .cta-band { padding: 56px 0; }
  .section-title { font-size: 26px; }
}

/* 产品实拍图 */
.media-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}