@charset "utf-8";
/* ============================================================
   深圳市森太辉煌科技有限公司 · www.sthh888.com
   全站共用样式表 · 宝蓝色系 · 直角 · 大留白 · 无动画库
   七页共用，勿在页面内写行内样式
   ============================================================ */

:root {
  --blue-900: #08214D;
  --blue-800: #0A2E6E;
  --blue-700: #0B3C8C;
  --blue-600: #12509E;
  --blue-500: #1A63D6;
  --blue-050: #EEF4FC;
  --paper: #F5F8FC;
  --white: #FFFFFF;
  --ink: #10203A;
  --muted: #5A6B84;
  --line: #DDE5F0;
  --gold: #C9A227;
  --radius: 0;
  --shadow: 0 10px 30px rgba(10, 46, 110, 0.07);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: Arial, "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
h1, h2, h3, h4, p, ul, ol, figure, dl, dd { margin: 0; }
ul, ol { padding-left: 1.15em; }
li + li { margin-top: 6px; }

h1 {
  font-size: clamp(32px, 3.9vw, 52px);
  line-height: 1.28;
  letter-spacing: .5px;
  font-weight: 700;
}
h2 {
  font-size: clamp(25px, 2.6vw, 36px);
  line-height: 1.42;
  letter-spacing: .5px;
  font-weight: 700;
}
h3 { font-size: 21px; line-height: 1.55; font-weight: 700; }
h4 { font-size: 16px; line-height: 1.6; font-weight: 700; }
p + p { margin-top: 14px; }

a, button { transition: color .2s, background-color .2s, border-color .2s, transform .2s; }
a:hover { color: var(--blue-500); }
:focus-visible { outline: 3px solid var(--blue-500); outline-offset: 3px; }

.wrap {
  width: min(1280px, calc(100% - 96px));
  margin: 0 auto;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 16px; top: -80px;
  z-index: 200;
  padding: 12px 20px;
  background: var(--white);
  color: var(--blue-700);
  border: 1px solid var(--line);
}
.skip-link:focus { top: 12px; }

/* ---------- 通用文字与区块 ---------- */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2.5px;
  color: var(--muted);
  text-transform: uppercase;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--gold);
  flex: none;
}

.section { padding: 96px 0; }
.paper { background: var(--paper); }
.tint { background: var(--blue-050); }
.dark { background: var(--blue-900); color: var(--white); }
.dark .eyebrow { color: rgba(255, 255, 255, .62); }
.dark a:hover { color: #9CC4F5; }
.dark .text-link { color: #A8CBF6; }
.dark .info-card {
  background: transparent;
  border-color: rgba(255, 255, 255, .18);
}
.dark .info-card h3 { color: var(--white); }
.dark .info-card p, .dark .info-card li { color: rgba(255, 255, 255, .72); }

.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  margin-bottom: 40px;
}
.section-head p {
  max-width: 430px;
  color: var(--muted);
  font-size: 15px;
}
.dark .section-head p { color: rgba(255, 255, 255, .68); }

.lead {
  font-size: 17px;
  color: var(--muted);
  max-width: 780px;
}
.dark .lead { color: rgba(255, 255, 255, .74); }

.muted { color: var(--muted); }
.ink-strong { color: var(--blue-700); font-weight: 700; }

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--blue-700);
  white-space: nowrap;
}
.text-link:hover { gap: 14px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 12px 26px;
  background: var(--blue-700);
  color: var(--white);
  border: 1px solid var(--blue-700);
  font-size: 15px;
  font-weight: 600;
}
.btn:hover {
  background: var(--blue-800);
  border-color: var(--blue-800);
  color: var(--white);
  transform: translateY(-2px);
}
.btn-light {
  background: var(--white);
  color: var(--blue-700);
  border-color: var(--white);
}
.btn-light:hover {
  background: var(--blue-050);
  border-color: var(--blue-050);
  color: var(--blue-900);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, .55);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, .14);
  border-color: var(--white);
  color: var(--white);
}
.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 顶部工具条 ---------- */
.utility {
  background: var(--blue-900);
  color: rgba(255, 255, 255, .78);
  font-size: 13px;
}
.utility .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  min-height: 38px;
  padding: 6px 0;
}
.utility span { letter-spacing: .3px; }
.utility-links {
  display: flex;
  gap: 22px;
  flex: none;
}
.utility-links a { color: rgba(255, 255, 255, .78); }
.utility-links a:hover { color: var(--white); }

/* ---------- 页头 ---------- */
.header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: var(--white);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  min-height: 86px;
  padding: 12px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: none;
}
.brand img { width: 152px; height: auto; }
.brand-line {
  display: flex;
  flex-direction: column;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.55;
  color: var(--muted);
  letter-spacing: .3px;
}
.brand-line strong {
  font-size: 14px;
  color: var(--blue-700);
  letter-spacing: .5px;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  margin-left: auto;
}
.nav a {
  position: relative;
  padding: 10px 14px;
  font-size: 15px;
  color: var(--ink);
  white-space: nowrap;
}
.nav a:hover { color: var(--blue-700); }
.nav a.active { color: var(--blue-700); font-weight: 700; }
.nav a.active::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 2px;
  height: 2px;
  background: var(--blue-700);
}

.header-call {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: none;
  padding: 8px 18px;
  background: var(--blue-700);
  color: var(--white);
  border: 1px solid var(--blue-700);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .5px;
}
.header-call small {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 1px;
  opacity: .82;
  margin-bottom: 2px;
}
.header-call:hover { background: var(--blue-800); color: var(--white); transform: translateY(-2px); }

.menu-toggle {
  display: none;
  width: 46px; height: 46px;
  margin-left: auto;
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--blue-700);
  font-size: 18px;
  line-height: 1;
}

/* ---------- 首页首屏 ---------- */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: 640px;
  background-color: var(--blue-900);
  background-image: url("images/现场效果6.jpeg");
  background-size: cover;
  background-position: center 55%;
  background-repeat: no-repeat;
  color: var(--white);
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(8, 33, 77, .95) 0%, rgba(8, 33, 77, .82) 44%, rgba(8, 33, 77, .34) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
  padding: 104px 0 84px;
}
.hero h1 { color: var(--white); }
.hero h1 em {
  font-style: normal;
  color: #A8CBF6;
  display: block;
}
.hero-intro {
  margin-top: 20px;
  max-width: 660px;
  font-size: 17px;
  color: rgba(255, 255, 255, .84);
}
.hero-intro span { display: block; }
.hero .btn-row { margin-top: 32px; }
.hero-tel {
  font-size: 17px !important;
  letter-spacing: .5px;
}

.hero-points {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(255, 255, 255, .22);
}
.hero-points li {
  margin: 0;
  padding: 26px 28px 34px 0;
}
.hero-points li + li {
  padding-left: 28px;
  border-left: 1px solid rgba(255, 255, 255, .18);
}
.hero-points strong {
  display: block;
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .3px;
}
.hero-points span {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(255, 255, 255, .74);
}

/* ---------- 内页页头 ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: 300px;
  background-color: var(--blue-900);
  background-size: cover;
  background-position: center 40%;
  background-repeat: no-repeat;
  color: var(--white);
  border-bottom: 3px solid var(--gold);
}
.page-hero--about { background-image: url("images/工厂4.png"); }
.page-hero--services { background-image: url("images/现场效果8.jpeg"); }
.page-hero--cases { background-image: url("images/现场效果1.jpeg"); }
.page-hero--certificates { background-image: url("images/工厂2.png"); }
.page-hero--news { background-image: url("images/百科知识 (24).png"); }
.page-hero--contact { background-image: url("images/工厂4.png"); }
.page-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(90deg, rgba(8, 33, 77, .92) 0%, rgba(8, 33, 77, .74) 58%, rgba(8, 33, 77, .52) 100%);
}
.page-hero .wrap {
  position: relative;
  z-index: 2;
  padding: 62px 0 54px;
}
.page-hero h1 {
  font-size: clamp(28px, 3.1vw, 42px);
  color: var(--white);
  max-width: 900px;
}
.page-hero p {
  margin-top: 14px;
  max-width: 760px;
  font-size: 16px;
  color: rgba(255, 255, 255, .78);
}
.breadcrumb {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
  font-size: 13px;
  color: rgba(255, 255, 255, .62);
}
.breadcrumb a { color: rgba(255, 255, 255, .82); }
.breadcrumb a:hover { color: var(--white); }

/* ---------- 数字条 ---------- */
.stats {
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}
.stat {
  padding: 34px 26px;
}
.stat + .stat { border-left: 1px solid var(--line); }
.stat strong {
  display: block;
  font-size: clamp(28px, 2.9vw, 40px);
  line-height: 1.1;
  font-weight: 700;
  color: var(--blue-700);
  letter-spacing: -.5px;
}
.stat strong small {
  font-size: 15px;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0;
  margin-left: 4px;
}
.stat p {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ---------- 关键词条 ---------- */
.keyword-bar {
  border-bottom: 1px solid var(--line);
}
.keyword-bar .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 20px 0;
}
.keyword-bar strong {
  font-size: 14px;
  color: var(--blue-700);
  margin-right: 4px;
}
.keyword-bar a {
  padding: 6px 13px;
  border: 1px solid var(--line);
  background: var(--white);
  font-size: 13px;
  color: var(--muted);
}
.keyword-bar a:hover {
  border-color: var(--blue-700);
  color: var(--blue-700);
  background: var(--blue-050);
}

/* ---------- 图文双栏 ---------- */
.split {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 64px;
  align-items: center;
}
.split.reverse { grid-template-columns: .95fr 1.05fr; }
.split.reverse .split-media { order: 2; }
.split-media {
  position: relative;
  border: 1px solid var(--line);
  background: var(--paper);
}
.split-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.split-media figcaption {
  padding: 12px 16px;
  font-size: 13px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  background: var(--white);
}
.split-mark {
  position: absolute;
  left: 0; bottom: 0;
  padding: 16px 22px;
  background: var(--blue-700);
  color: var(--white);
  line-height: 1.4;
}
.split-mark b { display: block; font-size: 26px; }
.split-mark span { font-size: 12px; opacity: .8; }

.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.pillars div strong {
  display: block;
  font-size: 15px;
  color: var(--blue-700);
}
.pillars div span {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.6;
}

/* ---------- 痛点卡 ---------- */
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.pain-card {
  display: block;
  padding: 30px 28px 26px;
  background: var(--paper);
  border: 1px solid transparent;
  border-top: 3px solid var(--line);
}
.pain-card:hover {
  background: var(--white);
  border-top-color: var(--blue-700);
  box-shadow: var(--shadow);
}
.pain-card span {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--muted);
}
.pain-card h3 { margin: 12px 0 10px; }
.pain-card p { font-size: 15px; color: var(--muted); }
.pain-card b {
  display: inline-block;
  margin-top: 18px;
  font-size: 13px;
  color: var(--blue-700);
}

/* ---------- 产品卡 ---------- */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.product-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
}
.product-card:hover {
  border-color: var(--blue-700);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}
.product-photo {
  position: relative;
  overflow: hidden;
  background: var(--paper);
}
.product-photo img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}
.product-photo .tag {
  position: absolute;
  left: 0; top: 0;
  padding: 5px 11px;
  background: var(--blue-700);
  color: var(--white);
  font-size: 12px;
  letter-spacing: .5px;
}
.product-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 22px 18px;
}
.product-info .en {
  font-size: 11px;
  letter-spacing: 1.6px;
  color: var(--muted);
  text-transform: uppercase;
}
.product-info h3 { margin: 6px 0 8px; font-size: 19px; }
.product-info p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.7;
}
.product-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--blue-700);
  font-weight: 700;
}

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  background: var(--white);
}
caption {
  caption-side: top;
  text-align: left;
  padding-bottom: 12px;
  font-size: 13px;
  color: var(--muted);
}
th, td {
  padding: 14px 16px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
}
thead th {
  background: var(--blue-700);
  color: var(--white);
  font-weight: 700;
  white-space: nowrap;
  border-color: var(--blue-700);
}
tbody th {
  background: var(--blue-050);
  color: var(--blue-800);
  font-weight: 700;
  white-space: nowrap;
}
tbody tr:nth-child(even) td { background: #FAFCFF; }

/* ---------- 案例卡 ---------- */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.case-card {
  display: flex;
  flex-direction: column;
  background: var(--white);
  border: 1px solid var(--line);
}
.case-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.case-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px;
}
.case-body span {
  font-size: 12px;
  letter-spacing: 1.5px;
  color: var(--muted);
  font-weight: 700;
}
.case-body h3 {
  margin: 8px 0 10px;
  font-size: 18px;
}
.case-body p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.75;
}
.case-body dl { margin-top: 16px; font-size: 13px; }
.case-body dt {
  color: var(--blue-700);
  font-weight: 700;
  margin-top: 8px;
}
.case-body dd { color: var(--muted); }

/* ---------- 图集 ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.gallery figure { margin: 0; }
.gallery img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: 1px solid var(--line);
}
.gallery figcaption {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted);
}

/* ---------- 资质证书卡 ---------- */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.cert-card {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 24px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--line);
}
.cert-card:hover { border-color: var(--blue-700); box-shadow: var(--shadow); }
.cert-thumb {
  display: block;
  border: 1px solid var(--line);
  background: var(--paper);
}
.cert-thumb img {
  width: 100%;
  aspect-ratio: 1 / 1.35;
  object-fit: cover;
  object-position: top center;
}
.cert-body h3 { font-size: 17px; }
.cert-body .cert-meta {
  margin-top: 6px;
  font-size: 13px;
  color: var(--muted);
  line-height: 1.7;
}
.cert-body ul {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  padding-left: 1.1em;
}
.cert-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.cert-actions a {
  padding: 7px 14px;
  border: 1px solid var(--line);
  font-size: 13px;
  color: var(--blue-700);
  font-weight: 700;
}
.cert-actions a:hover { background: var(--blue-050); border-color: var(--blue-700); }

.badge-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.badge-card {
  padding: 26px 28px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue-700);
}
.badge-card h3 { font-size: 17px; margin-bottom: 8px; }
.badge-card p { font-size: 14px; color: var(--muted); }

/* ---------- 新闻列表 ---------- */
.news-list {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--line);
}
.news-item {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.news-item img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border: 1px solid var(--line);
}
.news-body time {
  display: block;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .5px;
}
.news-body h3 { margin: 8px 0 10px; font-size: 20px; }
.news-body p { font-size: 15px; color: var(--muted); }
.news-body .news-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}
.news-body .news-tags span {
  padding: 4px 10px;
  background: var(--blue-050);
  color: var(--blue-700);
  font-size: 12px;
}

/* ---------- 文章正文（资讯页内嵌） ---------- */
.article { max-width: 860px; }
.article h2 { margin-top: 44px; }
.article h3 { margin-top: 28px; }
.article p, .article li { color: #24334A; }
.article ul, .article ol { margin-top: 12px; }
.article blockquote {
  margin: 24px 0;
  padding: 18px 22px;
  background: var(--blue-050);
  border-left: 3px solid var(--blue-700);
  font-size: 15px;
  color: var(--blue-800);
}
.article-note {
  margin-top: 32px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
.faq details {
  border-bottom: 1px solid var(--line);
}
.faq summary {
  position: relative;
  padding: 20px 46px 20px 0;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  position: absolute;
  right: 4px; top: 50%;
  transform: translateY(-50%);
  font-size: 22px;
  font-weight: 400;
  color: var(--blue-700);
}
.faq details[open] summary::after { content: "\2212"; }
.faq .faq-answer {
  padding: 0 46px 22px 0;
  font-size: 15px;
  color: var(--muted);
}
.faq .faq-answer strong { color: var(--ink); }

/* ---------- 时间线 ---------- */
.timeline {
  display: grid;
  gap: 0;
  border-left: 2px solid var(--line);
  margin-left: 6px;
}
.timeline-item {
  position: relative;
  padding: 0 0 30px 30px;
}
.timeline-item::before {
  content: "";
  position: absolute;
  left: -7px; top: 8px;
  width: 12px; height: 12px;
  background: var(--white);
  border: 2px solid var(--blue-700);
}
.timeline-item b {
  display: block;
  font-size: 15px;
  color: var(--blue-700);
  letter-spacing: .5px;
}
.timeline-item p { margin-top: 6px; font-size: 15px; color: var(--muted); }

/* ---------- 客户名单 ---------- */
.client-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}
.client-strip span {
  padding: 10px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  font-size: 15px;
  color: var(--blue-800);
  font-weight: 700;
  letter-spacing: .5px;
}

/* ---------- CTA ---------- */
.cta {
  background: var(--blue-800);
  color: var(--white);
  padding: 64px 0;
}
.cta .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 48px;
}
.cta h2 { color: var(--white); }
.cta p {
  margin-top: 12px;
  color: rgba(255, 255, 255, .76);
  font-size: 16px;
}
.cta-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
  flex: none;
}
.cta-phone {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: .5px;
  color: var(--white);
  line-height: 1.2;
}
.cta-phone small {
  display: block;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 1.5px;
  opacity: .74;
  margin-bottom: 4px;
}
.cta-phone:hover { color: #A8CBF6; }

/* ---------- 页脚 ---------- */
.footer {
  background: var(--blue-900);
  color: rgba(255, 255, 255, .74);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr .8fr .8fr 1.25fr;
  gap: 48px;
  padding: 60px 0 46px;
}
.footer h4 {
  color: var(--white);
  font-size: 15px;
  letter-spacing: 1px;
  margin-bottom: 16px;
}
.footer-logo { width: 300px; height: auto; margin-bottom: 16px; }
.footer-brand-copy { font-size: 14px; line-height: 1.85; }
.footer-links { display: grid; gap: 9px; }
.footer-links a { color: rgba(255, 255, 255, .74); }
.footer-links a:hover { color: var(--white); }

.footer-contact-lines p { line-height: 1.8; }
.footer-contact-label { color: rgba(255, 255, 255, .5); }
.footer-contact-value a { color: var(--white); }
.footer-contact-body {
  display: flex;
  gap: 22px;
  align-items: flex-start;
}
.footer-wechat { margin: 0; flex: none; }
.footer-wechat img {
  width: 108px;
  height: 108px;
  object-fit: cover;
  background: var(--white);
  padding: 4px;
}
.footer-wechat figcaption {
  margin-top: 6px;
  font-size: 12px;
  text-align: center;
  color: rgba(255, 255, 255, .6);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding: 20px 0 26px;
  border-top: 1px solid rgba(255, 255, 255, .16);
  font-size: 13px;
  color: rgba(255, 255, 255, .6);
}
.footer-bottom a { color: rgba(255, 255, 255, .74); }
.footer-bottom a:hover { color: var(--white); }
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
}

/* ---------- 浮动件 ---------- */
.float-contact {
  position: fixed;
  right: 24px;
  bottom: 92px;
  z-index: 80;
  padding: 12px 20px;
  background: var(--blue-700);
  color: var(--white);
  font-size: 14px;
  font-weight: 700;
  border: 1px solid var(--blue-700);
  box-shadow: 0 8px 24px rgba(8, 33, 77, .22);
}
.float-contact:hover { background: var(--blue-800); color: var(--white); }

.backtop {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 80;
  width: 52px;
  height: 52px;
  background: var(--white);
  border: 1px solid var(--line);
  color: var(--blue-700);
  font-size: 18px;
  line-height: 1;
  box-shadow: 0 6px 18px rgba(8, 33, 77, .1);
}
.backtop:hover { background: var(--blue-700); color: var(--white); border-color: var(--blue-700); }

/* ---------- 大图查看 ---------- */
dialog#image-dialog {
  width: min(920px, 94vw);
  max-height: 92vh;
  padding: 0;
  border: 0;
  background: var(--white);
}
dialog#image-dialog::backdrop { background: rgba(8, 33, 77, .78); }
dialog#image-dialog img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 92vh;
  object-fit: contain;
}
dialog#image-dialog button {
  position: absolute;
  right: 10px; top: 10px;
  z-index: 2;
  padding: 7px 15px;
  background: rgba(8, 33, 77, .82);
  border: 0;
  border-radius: 999px;
  color: var(--white);
  font-size: 13px;
  cursor: pointer;
}
dialog#image-dialog button:hover { background: var(--blue-900); }

/* ---------- 通用网格 ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stack-40 > * + * { margin-top: 40px; }
.stack-24 > * + * { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-40 { margin-top: 40px; }
.section-tight-bottom { padding-bottom: 0; }

.qr-figure img {
  aspect-ratio: 1 / 1;
  object-fit: contain;
  background: var(--white);
  padding: 14px;
}

.info-card {
  padding: 28px;
  background: var(--white);
  border: 1px solid var(--line);
}
.info-card h3 { font-size: 17px; margin-bottom: 10px; }
.info-card p, .info-card li { font-size: 14px; color: var(--muted); }

.note-box {
  padding: 18px 22px;
  background: var(--blue-050);
  border-left: 3px solid var(--blue-700);
  font-size: 13px;
  color: var(--blue-800);
  line-height: 1.75;
}

.contact-list { display: grid; gap: 0; }
.contact-list > div {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.contact-list dt, .contact-list .label { color: var(--muted); font-size: 14px; }
.contact-list .value { font-size: 15px; }
.contact-list .value a { color: var(--blue-700); font-weight: 700; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .brand-line { display: none; }
  .nav a { padding: 10px 10px; font-size: 14px; }
  .header-call { font-size: 17px; padding: 8px 14px; }
}

@media (max-width: 1024px) {
  .wrap { width: calc(100% - 56px); }
  .section { padding: 72px 0; }
  .split, .split.reverse { grid-template-columns: 1fr; gap: 36px; }
  .split.reverse .split-media { order: 0; }
  .pain-grid, .product-grid, .case-grid, .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
  .cta .wrap { flex-direction: column; align-items: flex-start; gap: 28px; }
  .hero-content { padding: 78px 0 62px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(3), .stat:nth-child(4) { border-top: 1px solid var(--line); }
}

@media (max-width: 768px) {
  body { font-size: 15px; }
  .wrap { width: calc(100% - 40px); }
  .section { padding: 56px 0; }
  .utility-links { display: none; }
  .utility .wrap { justify-content: center; padding: 7px 0; }
  .utility-kw { font-size: 12px; letter-spacing: 0; }
  .utility-sep, .utility-co { display: none; }

  .header-inner { min-height: 68px; gap: 14px; }
  .brand img { width: 126px; }
  .menu-toggle { display: block; }
  .header-call { display: none; }

  .nav {
    display: none;
    position: absolute;
    left: 0; right: 0; top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0;
    background: var(--white);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 14px 24px rgba(8, 33, 77, .08);
  }
  .nav.open { display: flex; }
  .nav a { padding: 13px 20px; font-size: 15px; border-bottom: 1px solid var(--line); }
  .nav a.active::after { display: none; }
  .nav a.active { background: var(--blue-050); }

  .hero { min-height: 520px; }
  .page-hero { min-height: 260px; }
  .hero-content { padding: 56px 0 44px; }
  .hero-intro { font-size: 15px; }
  .hero-points { grid-template-columns: 1fr; }
  .hero-points li { padding: 20px 0 22px; }
  .hero-points li + li { padding-left: 0; border-left: 0; border-top: 1px solid rgba(255, 255, 255, .18); }
  .hero .btn-row .btn { width: 100%; }

  .page-hero .wrap { padding: 40px 0 36px; }

  .stats-grid { grid-template-columns: 1fr; }
  .stat { padding: 22px 0; }
  .stat + .stat { border-left: 0; border-top: 1px solid var(--line); }

  .pain-grid, .product-grid, .case-grid, .grid-2, .grid-3, .grid-4, .gallery, .badge-row { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); }

  .section-head { flex-direction: column; align-items: flex-start; gap: 16px; }
  .section-head p { max-width: none; }

  .cert-card { grid-template-columns: 1fr; gap: 18px; }
  .cert-thumb img { aspect-ratio: 1 / 1.3; }

  .news-item { grid-template-columns: 1fr; gap: 16px; }
  .news-item img { aspect-ratio: 16 / 9; }

  .footer-grid { grid-template-columns: 1fr; gap: 34px; padding: 44px 0 34px; }
  .footer-logo { width: 240px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }

  .float-contact { display: none; }
  .backtop { right: 16px; bottom: 16px; width: 46px; height: 46px; }

  th, td { padding: 11px 12px; font-size: 13px; }
  .contact-list > div { grid-template-columns: 78px 1fr; }
  .cta-phone { font-size: 25px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  a, button { transition: none; }
  .btn:hover, .header-call:hover, .product-card:hover { transform: none; }
}

@media print {
  .header, .utility, .float-contact, .backtop, .cta, .nav { display: none; }
  body { font-size: 12pt; }
  .hero, .page-hero { background-image: none; background-color: #fff; color: #000; border: 0; }
  .hero h1, .page-hero h1 { color: #000; }
}