/* ==========================================================
   广东飞鑫通电气有限公司 官网样式表
   ========================================================== */

/* ---------- 设计变量 ---------- */
:root {
  --primary: #0b63ce;
  --primary-dark: #074b9e;
  --primary-light: #e8f1fd;
  --accent: #12b76a;
  --accent-light: #e6f7ef;
  --dark: #0e2a47;
  --darker: #081c30;
  --text: #1f2937;
  --text-soft: #5b6875;
  --text-mute: #8a96a3;
  --bg: #ffffff;
  --bg-soft: #f4f7fb;
  --bg-soft-2: #eef3f9;
  --border: #e3eaf3;
  --shadow-sm: 0 2px 8px rgba(14, 42, 71, .06);
  --shadow: 0 8px 28px rgba(14, 42, 71, .09);
  --shadow-lg: 0 18px 48px rgba(14, 42, 71, .14);
  --radius: 10px;
  --radius-lg: 16px;
  --header-h: 76px;
  --container: 1220px;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 基础重置 ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Source Han Sans SC", "Noto Sans CJK SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: color .25s var(--ease); }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5 { margin: 0; font-weight: 700; line-height: 1.35; color: var(--dark); }
p { margin: 0; }
button { font-family: inherit; cursor: pointer; }

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

.section { padding: 88px 0; }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--dark); color: #d6e2f0; }
.section--dark h2,
.section--dark h3 { color: #fff; }

/* ---------- 通用标题 ---------- */
.sec-head { text-align: center; margin-bottom: 56px; }
.sec-head__en {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--primary);
  margin-bottom: 12px;
}
.sec-head__en::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--primary);
  margin: 10px auto 0;
  border-radius: 2px;
}
.sec-head h2 { font-size: 34px; letter-spacing: .02em; }
.sec-head p {
  margin: 16px auto 0;
  max-width: 720px;
  color: var(--text-soft);
  font-size: 16px;
}
.section--dark .sec-head p { color: #a9bdd4; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 48px;
  padding: 0 30px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: all .28s var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--primary); color: #fff; }
.btn--primary:hover { background: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(11, 99, 206, .28); }
.btn--accent { background: var(--accent); color: #fff; }
.btn--accent:hover { background: #0e9d5b; transform: translateY(-2px); box-shadow: 0 10px 24px rgba(18, 183, 106, .28); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .5); }
.btn--ghost:hover { background: #fff; color: var(--primary); border-color: #fff; }
.btn--outline { background: transparent; color: var(--primary); border-color: var(--primary); }
.btn--outline:hover { background: var(--primary); color: #fff; }

/* ==========================================================
   顶部工具条
   ========================================================== */
.topbar {
  background: var(--darker);
  color: #9fb3c8;
  font-size: 13px;
  height: 40px;
  display: flex;
  align-items: center;
}
.topbar .container { display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.topbar__left { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.topbar__left span { display: inline-flex; align-items: center; gap: 6px; }
.topbar__left svg { width: 14px; height: 14px; flex: none; }
.topbar__right { display: flex; align-items: center; gap: 18px; }
.topbar a:hover { color: #fff; }
.topbar__tag {
  padding: 1px 9px;
  border: 1px solid rgba(255, 255, 255, .22);
  border-radius: 3px;
  font-size: 12px;
  letter-spacing: .04em;
}

/* ==========================================================
   导航
   ========================================================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .96);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s var(--ease);
}
.header.is-stuck { box-shadow: 0 4px 20px rgba(14, 42, 71, .08); }
.header .container {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo { display: flex; align-items: center; gap: 12px; flex: none; }
.logo__img { height: 46px; width: auto; max-width: 120px; object-fit: contain; display: block; }
.footer__logo .logo__img { height: 42px; }
.logo__mark {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--primary), #2f9bff 60%, var(--accent));
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -.5px;
  box-shadow: 0 6px 16px rgba(11, 99, 206, .28);
}
.logo__text strong {
  display: block;
  font-size: 19px;
  line-height: 1.2;
  color: var(--dark);
  letter-spacing: .04em;
}
.logo__text span {
  display: block;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--text-mute);
  text-transform: uppercase;
}

.nav { display: flex; align-items: center; gap: 4px; }
.nav > li { position: relative; }
.nav > li > a {
  display: block;
  padding: 10px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text);
  border-radius: 5px;
}
.nav > li > a:hover { color: var(--primary); }
.nav > li > a.is-active { color: var(--primary); font-weight: 600; }
.nav > li > a.is-active::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 2px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header__cta { display: flex; align-items: center; gap: 14px; flex: none; }
.header__tel {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: .01em;
}
.header__tel svg { width: 18px; height: 18px; }

.burger {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  padding: 0;
  place-items: center;
}
.burger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--dark);
  margin: 3px auto;
  transition: transform .3s var(--ease), opacity .2s;
}
body.menu-open .burger span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
body.menu-open .burger span:nth-child(2) { opacity: 0; }
body.menu-open .burger span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

/* ==========================================================
   Hero
   ========================================================== */
.hero {
  position: relative;
  min-height: 620px;
  display: flex;
  align-items: center;
  background: linear-gradient(120deg, #071c33 0%, #0e2a47 45%, #0b4f8f 100%);
  color: #fff;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 70% 40%, #000 0%, transparent 72%);
}
.hero::after {
  content: "";
  position: absolute;
  right: -140px;
  top: -120px;
  width: 620px;
  height: 620px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18, 183, 106, .3), transparent 62%);
}
.hero .container { position: relative; z-index: 2; padding: 96px 24px; }
.hero__inner { max-width: 720px; }
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border: 1px solid rgba(255, 255, 255, .26);
  border-radius: 40px;
  font-size: 13px;
  letter-spacing: .06em;
  background: rgba(255, 255, 255, .07);
  margin-bottom: 26px;
}
.hero__badge i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(18, 183, 106, .25);
}
.hero h1 {
  color: #fff;
  font-size: 46px;
  line-height: 1.3;
  letter-spacing: .01em;
  margin-bottom: 20px;
}
.hero h1 em {
  font-style: normal;
  background: linear-gradient(90deg, #5fd0a4, #9fdcff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__desc {
  font-size: 17px;
  color: #bfd2e6;
  max-width: 620px;
  margin-bottom: 34px;
}
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 52px; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 780px;
}
.hero__stats div {
  background: rgba(8, 28, 48, .55);
  padding: 20px 18px;
  text-align: center;
}
.hero__stats strong {
  display: block;
  font-size: 30px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero__stats strong small { font-size: 15px; font-weight: 600; margin-left: 2px; }
.hero__stats span { font-size: 13px; color: #a9c1d8; letter-spacing: .04em; }

/* ---------- 子页横幅 ---------- */
.page-banner {
  position: relative;
  padding: 86px 0 78px;
  background: linear-gradient(120deg, #071c33, #0e2a47 55%, #0b4f8f);
  color: #fff;
  overflow: hidden;
}
.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .05) 1px, transparent 1px);
  background-size: 58px 58px;
  mask-image: radial-gradient(circle at 80% 30%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 80% 30%, #000, transparent 70%);
}
.page-banner .container { position: relative; z-index: 2; }
.page-banner h1 { color: #fff; font-size: 38px; margin-bottom: 12px; }
.page-banner p { color: #bfd2e6; max-width: 700px; }

/* ---------- 面包屑 ---------- */
.crumbs {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-mute);
}
.crumbs .container { display: flex; align-items: center; gap: 8px; padding-top: 14px; padding-bottom: 14px; flex-wrap: wrap; }
.crumbs a:hover { color: var(--primary); }
.crumbs span { color: var(--text-soft); }

/* ==========================================================
   首页 - 关于
   ========================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
}
.about-grid__text h2 { font-size: 32px; margin-bottom: 8px; }
.about-grid__text .sec-head__en { margin-bottom: 10px; }
.about-grid__text p { color: var(--text-soft); margin-bottom: 18px; }
.about-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 20px; margin: 26px 0 30px; }
.about-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 15px; color: var(--text); }
.about-list svg { width: 20px; height: 20px; flex: none; color: var(--accent); margin-top: 4px; }

.about-visual { position: relative; }
.about-visual__main {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(140deg, #0e2a47, #0b63ce);
  aspect-ratio: 4 / 3;
  display: grid;
  place-items: center;
  padding: 30px;
  box-shadow: var(--shadow-lg);
}
.about-visual__main svg { width: 100%; height: 100%; }
.float-card {
  position: absolute;
  background: #fff;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 18px 22px;
}
.float-card--1 { left: -34px; bottom: 46px; }
.float-card--2 { right: -22px; top: 40px; }
.float-card strong { display: block; font-size: 26px; color: var(--primary); line-height: 1.2; }
.float-card span { font-size: 13px; color: var(--text-soft); }

/* ==========================================================
   通用卡片栅格
   ========================================================== */
.grid { display: grid; gap: 26px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all .32s var(--ease);
  position: relative;
  overflow: hidden;
}
.card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.card__icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: var(--primary-light);
  display: grid;
  place-items: center;
  margin-bottom: 20px;
  color: var(--primary);
  transition: all .32s var(--ease);
}
.card:hover .card__icon { background: var(--primary); color: #fff; }
.card__icon svg { width: 28px; height: 28px; }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--text-soft); font-size: 15px; }
.card--soft { background: var(--bg-soft); border-color: transparent; }

/* ==========================================================
   产品体系
   ========================================================== */
.prod-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all .34s var(--ease);
}
.prod-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); border-color: transparent; }
.prod-card__img {
  height: 216px;
  background: linear-gradient(160deg, #f4f8fd, #e5eef8);
  display: grid;
  place-items: center;
  padding: 24px;
  border-bottom: 1px solid var(--border);
}
.prod-card__img svg { height: 100%; width: auto; max-width: 100%; }
.prod-card__body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.prod-card__no {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--primary);
  margin-bottom: 8px;
}
.prod-card h3 { font-size: 20px; margin-bottom: 10px; }
.prod-card p { color: var(--text-soft); font-size: 15px; margin-bottom: 16px; }
.prod-card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 20px; }
.prod-card__tags span {
  font-size: 12.5px;
  padding: 4px 11px;
  border-radius: 40px;
  background: var(--bg-soft-2);
  color: var(--text-soft);
}
.prod-card__link {
  margin-top: auto;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.prod-card__link svg { width: 16px; height: 16px; transition: transform .3s var(--ease); }
.prod-card:hover .prod-card__link svg { transform: translateX(5px); }

/* ---------- 产品详情行（产品页） ---------- */
.prod-detail {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 56px;
  align-items: center;
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}
.prod-detail:last-child { border-bottom: 0; }
.prod-detail:nth-child(even) .prod-detail__img { order: 2; }
.prod-detail__img {
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, #eef4fb, #dfeaf7);
  padding: 40px;
  min-height: 320px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
}
.prod-detail__img svg { max-height: 260px; width: auto; }
.prod-detail__tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .14em;
  color: var(--primary);
  background: var(--primary-light);
  padding: 5px 14px;
  border-radius: 40px;
  margin-bottom: 16px;
}
.prod-detail h2 { font-size: 28px; margin-bottom: 14px; }
.prod-detail > div > p { color: var(--text-soft); margin-bottom: 20px; }
.spec-list { display: grid; gap: 12px; margin-bottom: 24px; }
.spec-list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--text);
}
.spec-list svg { width: 18px; height: 18px; flex: none; color: var(--accent); margin-top: 5px; }
.spec-list b { font-weight: 600; color: var(--dark); }

/* 参数表 */
.spec-table { width: 100%; border-collapse: collapse; font-size: 15px; margin-bottom: 8px; }
.spec-table th, .spec-table td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; }
.spec-table thead th { background: var(--primary); color: #fff; font-weight: 600; }
.spec-table tbody tr:nth-child(even) { background: var(--bg-soft); }
.spec-table td:first-child { font-weight: 600; color: var(--dark); width: 30%; }

/* ==========================================================
   优势
   ========================================================== */
.adv-item {
  display: flex;
  gap: 24px;
  padding: 30px 0;
  border-bottom: 1px dashed var(--border);
}
.adv-item:last-child { border-bottom: 0; }
.adv-item__no {
  flex: none;
  width: 62px;
  height: 62px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: grid;
  place-items: center;
  font-size: 20px;
  font-weight: 800;
  transition: all .3s var(--ease);
}
.adv-item:hover .adv-item__no { background: var(--primary); color: #fff; }
.adv-item h3 { font-size: 20px; margin-bottom: 8px; }
.adv-item p { color: var(--text-soft); font-size: 15px; }

.adv-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 28px;
  transition: all .32s var(--ease);
  height: 100%;
}
.adv-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--primary); }
.adv-card__no {
  font-size: 34px;
  font-weight: 800;
  color: var(--primary-light);
  line-height: 1;
  margin-bottom: 14px;
  transition: color .3s var(--ease);
}
.adv-card:hover .adv-card__no { color: var(--primary); }
.adv-card h3 { font-size: 19px; margin-bottom: 10px; }
.adv-card p { color: var(--text-soft); font-size: 15px; }

/* ==========================================================
   应用场景
   ========================================================== */
.scene {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 210px;
  background: linear-gradient(150deg, #10375c, #0b63ce);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  color: #fff;
  transition: transform .34s var(--ease);
}
.scene:hover { transform: translateY(-6px); }
.scene::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .07) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .07) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: .7;
}
.scene svg { position: absolute; right: 18px; top: 18px; width: 44px; height: 44px; opacity: .85; color: #8fd8ff; }
.scene h3 { color: #fff; font-size: 20px; position: relative; }
.scene p { color: #c3d8ee; font-size: 14px; position: relative; margin-top: 6px; }

/* ==========================================================
   资质荣誉
   ========================================================== */
.cert-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 24px;
  text-align: center;
  transition: all .32s var(--ease);
}
.cert-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.cert-card__badge {
  width: 76px;
  height: 76px;
  margin: 0 auto 18px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, var(--primary-light), #d9ecff);
  color: var(--primary);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: -.02em;
}
.cert-card h4 { font-size: 16px; margin-bottom: 8px; }
.cert-card p { font-size: 13.5px; color: var(--text-mute); line-height: 1.65; }

.aaa-list { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.aaa-item {
  display: flex;
  align-items: center;
  gap: 14px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: all .3s var(--ease);
}
.aaa-item:hover { border-color: var(--primary); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.aaa-item i {
  flex: none;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: linear-gradient(135deg, #e8b23a, #f5d17a);
  color: #6b4a06;
  display: grid;
  place-items: center;
  font-style: normal;
  font-weight: 800;
  font-size: 14px;
}
.aaa-item span { font-size: 15px; font-weight: 600; color: var(--dark); }

/* ==========================================================
   服务流程
   ========================================================== */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; position: relative; }
.flow__item { text-align: center; padding: 0 18px; position: relative; }
.flow__item::after {
  content: "";
  position: absolute;
  top: 32px;
  right: -14px;
  width: 28px;
  height: 2px;
  background: repeating-linear-gradient(90deg, rgba(255, 255, 255, .5) 0 5px, transparent 5px 10px);
}
.flow__item:last-child::after { display: none; }
.flow__step {
  width: 64px;
  height: 64px;
  margin: 0 auto 18px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .3);
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  background: rgba(255, 255, 255, .08);
}
.flow__item h4 { color: #fff; font-size: 17px; margin-bottom: 8px; }
.flow__item p { color: #a9bdd4; font-size: 14px; }

.svc-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px 30px;
  height: 100%;
  transition: all .32s var(--ease);
}
.svc-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.svc-card__icon {
  width: 54px;
  height: 54px;
  border-radius: 12px;
  background: var(--accent-light);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 18px;
}
.svc-card__icon svg { width: 26px; height: 26px; }
.svc-card h3 { font-size: 19px; margin-bottom: 14px; }
.svc-card ul { display: grid; gap: 10px; }
.svc-card li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 15px;
  color: var(--text-soft);
}
.svc-card li::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  margin-top: 10px;
}

/* 质保表 */
.warranty { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.warranty__item {
  background: linear-gradient(150deg, #0e2a47, #0b4f8f);
  color: #fff;
  border-radius: var(--radius);
  padding: 32px 28px;
  text-align: center;
}
.warranty__item strong { display: block; font-size: 40px; font-weight: 800; line-height: 1.1; margin-bottom: 6px; }
.warranty__item strong small { font-size: 16px; font-weight: 600; }
.warranty__item span { font-size: 15px; color: #c3d8ee; }
.warranty__item em { display: block; font-style: normal; font-size: 13px; color: #8fd8ff; margin-top: 10px; }

/* ==========================================================
   企业文化
   ========================================================== */
.culture {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(130deg, #0e2a47, #0b63ce 70%, #12b76a);
  padding: 54px 48px;
  color: #fff;
  position: relative;
}
.culture::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px);
  background-size: 44px 44px;
}
.culture .container, .culture > * { position: relative; z-index: 2; }
.culture h2 { color: #fff; font-size: 30px; text-align: center; margin-bottom: 40px; }
.culture__grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.culture__item {
  background: rgba(255, 255, 255, .1);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: var(--radius);
  padding: 28px 30px;
  backdrop-filter: blur(4px);
}
.culture__item h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .1em;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.culture__item h4::before {
  content: "";
  width: 4px;
  height: 18px;
  background: var(--accent);
  border-radius: 2px;
}
.culture__item p { color: #d8e6f5; font-size: 16px; line-height: 1.85; }
.culture__foot { margin-top: 32px; text-align: center; color: #cfe1f4; font-size: 16px; }

/* 核心价值观 chips */
.values { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; margin-top: 30px; }
.values span {
  padding: 9px 24px;
  border-radius: 40px;
  background: rgba(255, 255, 255, .14);
  border: 1px solid rgba(255, 255, 255, .24);
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  letter-spacing: .06em;
}

/* ==========================================================
   历程时间轴
   ========================================================== */
.timeline { position: relative; padding-left: 34px; }
.timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}
.timeline__item { position: relative; padding-bottom: 32px; }
.timeline__item:last-child { padding-bottom: 0; }
.timeline__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--primary);
  box-shadow: 0 0 0 4px rgba(11, 99, 206, .12);
}
.timeline__year { font-size: 20px; font-weight: 800; color: var(--primary); margin-bottom: 4px; }
.timeline__item h4 { font-size: 17px; margin-bottom: 6px; }
.timeline__item p { color: var(--text-soft); font-size: 15px; }

/* ==========================================================
   联系
   ========================================================== */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: start; }
.info-card {
  display: flex;
  gap: 18px;
  padding: 24px 0;
  border-bottom: 1px dashed var(--border);
}
.info-card:last-of-type { border-bottom: 0; }
.info-card__icon {
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: var(--primary-light);
  color: var(--primary);
  display: grid;
  place-items: center;
}
.info-card__icon svg { width: 22px; height: 22px; }
.info-card h4 { font-size: 15px; color: var(--text-mute); font-weight: 600; letter-spacing: .06em; margin-bottom: 4px; }
.info-card p { font-size: 17px; font-weight: 600; color: var(--dark); }
.info-card small { display: block; font-size: 13.5px; color: var(--text-mute); font-weight: 400; margin-top: 2px; }

.form-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
}
.form-card h3 { font-size: 22px; margin-bottom: 6px; }
.form-card > p { color: var(--text-soft); font-size: 15px; margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--text); margin-bottom: 8px; }
.form-group label i { color: #e5484d; font-style: normal; margin-left: 2px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 12px 14px;
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  transition: border-color .25s var(--ease), box-shadow .25s var(--ease);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11, 99, 206, .12);
}
.form-group textarea { resize: vertical; min-height: 110px; }
.form-group input[type="checkbox"] {
  width: 16px;
  height: 16px;
  padding: 0;
  margin: 0;
  accent-color: var(--primary);
  cursor: pointer;
}
.form-note { font-size: 13px; color: var(--text-mute); margin-top: 14px; line-height: 1.7; }
.form-msg {
  display: none;
  margin-top: 16px;
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
}
.form-msg.is-ok { display: block; background: var(--accent-light); color: #0a7a49; border: 1px solid #b6e8cf; }
.form-msg.is-err { display: block; background: #fdecec; color: #b42318; border: 1px solid #f8c9c6; }

/* 地图占位 */
.map-box {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #eef3f9;
  min-height: 380px;
  position: relative;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 30px;
}
.map-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(11, 99, 206, .09) 1px, transparent 1px), linear-gradient(90deg, rgba(11, 99, 206, .09) 1px, transparent 1px);
  background-size: 40px 40px;
}
.map-box__pin {
  position: relative;
  z-index: 2;
  color: var(--primary);
}
.map-box__pin svg { width: 46px; height: 46px; margin: 0 auto 14px; }
.map-box__pin h4 { font-size: 18px; margin-bottom: 6px; }
.map-box__pin p { color: var(--text-soft); font-size: 15px; }

/* ==========================================================
   CTA 条
   ========================================================== */
.cta-bar {
  background: linear-gradient(100deg, var(--primary), #0a4fa8 55%, #12b76a);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 48px 52px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-bar h2 { color: #fff; font-size: 28px; margin-bottom: 8px; }
.cta-bar p { color: #d9eaf9; font-size: 16px; }
.cta-bar__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ==========================================================
   页脚
   ========================================================== */
.footer { background: var(--darker); color: #9fb3c8; padding-top: 66px; }
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 44px;
  padding-bottom: 48px;
}
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 20px; letter-spacing: .06em; }
.footer__about p { font-size: 14.5px; line-height: 1.9; margin-top: 18px; }
.footer__logo { display: flex; align-items: center; gap: 12px; }
.footer__logo strong { color: #fff; font-size: 18px; letter-spacing: .04em; }
.footer ul { display: grid; gap: 11px; }
.footer ul a { font-size: 14.5px; color: #9fb3c8; }
.footer ul a:hover { color: #fff; padding-left: 4px; }
.footer__contact li { display: flex; gap: 10px; font-size: 14.5px; line-height: 1.8; }
.footer__contact svg { width: 16px; height: 16px; flex: none; margin-top: 5px; color: var(--accent); }
.footer__contact b { color: #fff; font-weight: 600; }
.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, .1);
  padding: 22px 0 26px;
  font-size: 13.5px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.footer__bottom a:hover { color: #fff; }

/* ==========================================================
   返回顶部 & 悬浮客服
   ========================================================== */
.fab-group {
  position: fixed;
  right: 22px;
  bottom: 30px;
  z-index: 90;
  display: grid;
  gap: 12px;
}
.fab {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: 0;
  background: #fff;
  color: var(--primary);
  box-shadow: var(--shadow);
  display: grid;
  place-items: center;
  transition: all .3s var(--ease);
}
.fab:hover { background: var(--primary); color: #fff; transform: translateY(-3px); }
.fab svg { width: 22px; height: 22px; }
.fab--top { opacity: 0; visibility: hidden; }
.fab--top.is-show { opacity: 1; visibility: visible; }
.fab--tel { background: var(--accent); color: #fff; }
.fab--tel:hover { background: #0e9d5b; }

/* ==========================================================
   动画
   ========================================================== */
.reveal { opacity: 0; transform: translateY(26px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-in { opacity: 1; transform: none; }

/* ==========================================================
   产品快速导航（锚点）
   ========================================================== */
.anchor-nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}
.anchor-nav a {
  padding: 10px 24px;
  border: 1px solid var(--border);
  border-radius: 40px;
  background: #fff;
  font-size: 15px;
  font-weight: 600;
  color: var(--dark);
  transition: all .28s var(--ease);
}
.anchor-nav a:hover {
  border-color: var(--primary);
  color: var(--primary);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

/* ==========================================================
   常见问题（折叠）
   ========================================================== */
.faq { display: grid; gap: 12px; }
.faq details {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq summary {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 16px;
  color: var(--dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  flex: none;
  font-size: 22px;
  line-height: 1;
  color: var(--primary);
  font-weight: 400;
}
.faq details[open] summary { border-bottom: 1px solid var(--border); }
.faq details[open] summary::after { content: "\2212"; }
.faq .faq__a {
  padding: 16px 24px 20px;
  color: var(--text-soft);
  font-size: 15px;
  line-height: 1.85;
}

/* ==========================================================
   资质翻转卡（hover / click 翻转展示证书图）
   ========================================================== */
.cert-flip {
  position: relative;
  width: 100%;
  height: 320px;
  perspective: 1200px;
  -webkit-perspective: 1200px;
  cursor: pointer;
}
.cert-flip__face {
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  transition: transform .8s var(--ease);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.cert-flip__face--front {
  background: #fff;
  border: 1px solid var(--border);
  padding: 30px 24px;
  text-align: center;
  align-items: center;
  justify-content: center;
  transition: box-shadow .32s var(--ease), border-color .32s;
}
.cert-flip:hover .cert-flip__face--front,
.cert-flip.is-flipped .cert-flip__face--front {
  transform: rotateY(180deg);
  box-shadow: none;
  border-color: transparent;
}
.cert-flip__face--back {
  transform: rotateY(180deg);
  background: #fff;
  border: 1px solid var(--border);
  padding: 12px;
  align-items: center;
  justify-content: center;
}
.cert-flip:hover .cert-flip__face--back,
.cert-flip.is-flipped .cert-flip__face--back {
  transform: rotateY(360deg);
}
.cert-flip__face--back img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}
.cert-flip__hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 12px;
  color: var(--text-mute);
  letter-spacing: .04em;
}
.cert-flip__hint svg { width: 14px; height: 14px; }

@media (max-width: 768px) {
  .cert-flip { height: 280px; }
}
@media (max-width: 480px) {
  .cert-flip { height: 260px; }
}

/* ==========================================================
   响应式
   ========================================================== */
@media (max-width: 1080px) {
  .nav > li > a { padding: 10px 11px; font-size: 14.5px; }
  .header__tel { font-size: 17px; }
  .footer__grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .section { padding: 64px 0; }
  .about-grid, .prod-detail, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
  .prod-detail:nth-child(even) .prod-detail__img { order: 0; }
  .grid--3, .aaa-list, .warranty { grid-template-columns: repeat(2, 1fr); }
  .culture__grid { grid-template-columns: 1fr; }
  .float-card--1 { left: 0; }
  .float-card--2 { right: 0; }
  .flow { grid-template-columns: repeat(2, 1fr); gap: 28px 0; }
  .flow__item::after { display: none; }
}

@media (max-width: 768px) {
  .logo__img { height: 40px; }
  .topbar { display: none; }
  .burger { display: grid; }
  .header__cta { display: none; }
  .nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 20px 22px;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition: all .3s var(--ease);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
  }
  body.menu-open .nav { transform: none; opacity: 1; visibility: visible; }
  .nav > li > a { padding: 14px 4px; border-bottom: 1px solid #f1f5fa; font-size: 16px; }
  .nav > li > a.is-active::after { display: none; }
  .hero { min-height: auto; }
  .hero .container { padding: 60px 24px 68px; }
  .hero h1 { font-size: 30px; }
  .hero__desc { font-size: 15.5px; }
  .hero__actions .btn { flex: 1; min-width: 150px; }
  .page-banner { padding: 54px 0 48px; }
  .page-banner h1 { font-size: 27px; }
  .sec-head { margin-bottom: 38px; }
  .sec-head h2 { font-size: 25px; }
  .grid--2, .grid--3, .grid--4, .aaa-list, .warranty, .form-row, .about-list { grid-template-columns: 1fr; }
  .foot-note-fix, .footer__grid { grid-template-columns: 1fr; }
  .cta-bar { padding: 32px 26px; }
  .cta-bar h2 { font-size: 22px; }
  .culture { padding: 36px 24px; }
  .form-card { padding: 26px 22px; }
  .fab-group { right: 14px; bottom: 18px; }
  .fab { width: 44px; height: 44px; }
}

@media (max-width: 480px) {
  .container { padding: 0 18px; }
  .hero__stats { grid-template-columns: 1fr 1fr; }
  .hero__stats strong { font-size: 24px; }
  .prod-detail__img { padding: 24px; min-height: 240px; }
  .logo__text strong { font-size: 16.5px; }
  .logo__img { height: 36px; }
}