/* =====================================================================
   四川微震隔控科技官网 —— 设计基座 site.css
   工业科技 B2B 风格。分节：
   1 设计令牌 / 2 重置与基础排版 / 3 原子组件（按钮·文本链接）/
   4 页头 / 5 主视觉 Hero / 6 内页 Hero / 7 区块容器与标题 /
   8 面包屑 / 9 页脚 / 10 悬浮工具（右侧条·回到顶部）/ 11 响应式
   页面级区块（两栏骨架、卡片网格、列表、详情、表单）在 site-ext.css。
   ===================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root {
  color-scheme: light;

  /* 中性色阶 */
  --bg: #f6faf9;
  --panel: #ffffff;
  --soft: #eef5f2;
  --line: #d9e5e2;
  --muted: #5d6b6f;
  --ink: #102023;
  --deep: #08181d;
  --deep-2: #0d2830;

  /* 品牌色：--brand 用于点缀与深底，--brand-ink 用于白底文字与实底按钮（≥4.5:1） */
  --brand: #00a2bd;
  --brand-ink: #007d96;
  --brand-dark: #00637a;
  --green: #2fba78;
  --green-ink: #1f8f5a;
  --amber: #f2aa3a;
  --red: #c64d4a;

  /* 字阶 */
  --fs-xs: 13px;
  --fs-sm: 14px;
  --fs-base: 16px;
  --fs-md: 18px;
  --fs-lg: 22px;
  --fs-xl: 28px;
  --fs-2xl: 36px;

  /* 容器与留白：宽屏版（1920 视口下内容 1600、两侧各 160px；
     ≤1600 视口回退到 gutter，平板/手机 gutter 不受影响） */
  --container: 1600px;
  --gutter: clamp(20px, 4vw, 40px);
  --pad-x: max(var(--gutter), calc((100% - var(--container)) / 2));
  --section-y: clamp(56px, 6vw, 88px);

  /* 圆角与阴影 */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --shadow-sm: 0 2px 10px rgba(8, 24, 29, 0.06);
  --shadow-md: 0 12px 32px rgba(8, 24, 29, 0.10);
  --shadow-lg: 0 24px 70px rgba(8, 24, 29, 0.16);

  /* 层级 */
  --z-header: 30;
  --z-float: 40;

  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "Microsoft YaHei", sans-serif;
}

/* ---------- 2. 重置与基础排版 ---------- */
* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 14px 0 0;
  padding-left: 18px;
}

h1, h2, h3, p {
  overflow-wrap: anywhere;
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--brand-ink);
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.heading-en {
  margin: 8px 0 0;
  color: #93a5a8;
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

/* ---------- 3. 原子组件：按钮 / 文本链接 ---------- */
.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease,
    transform 0.18s ease, box-shadow 0.18s ease;
}

.button.primary {
  color: #fff;
  background: var(--brand-ink);
  box-shadow: 0 10px 24px rgba(0, 125, 150, 0.22);
}

.button.primary:hover {
  background: var(--brand-dark);
  transform: translateY(-1px);
}

/* 深底上的主按钮：提亮为品牌青 + 深色字，保证与描边次按钮的权重 */
.hero .button.primary,
.contact-section .button.primary,
.inquiry-section .button.primary {
  color: #061316;
  background: var(--brand);
  box-shadow: 0 12px 28px rgba(0, 162, 189, 0.32);
}

.hero .button.primary:hover,
.contact-section .button.primary:hover,
.inquiry-section .button.primary:hover {
  background: #26b7d0;
}

.button.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.06);
}

.button.secondary:hover {
  background: rgba(255, 255, 255, 0.14);
}

.button.more {
  min-width: 190px;
  color: var(--brand-ink);
  border-color: var(--brand-ink);
  background: transparent;
}

.button.more:hover {
  color: #fff;
  background: var(--brand-ink);
  transform: none;
}

.button[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.text-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-ink);
  font-weight: 700;
}

.text-link::after {
  content: "\2192";
  transition: transform 0.18s ease;
}

.text-link:hover::after {
  transform: translateX(4px);
}

/* ---------- 4. 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 68px;
  padding-inline: var(--pad-x);
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.site-header .brand {
  grid-column: 1;
  grid-row: 1;
}

.site-header .main-nav {
  grid-column: 2;
  grid-row: 1;
}

.site-header .header-contact {
  grid-column: 3;
  grid-row: 1;
  justify-self: end;
}

.site-header .nav-toggle {
  grid-column: 3;
  grid-row: 1;
  justify-self: end;
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
}

.brand img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: var(--r-sm);
}

.brand strong,
.brand small {
  display: block;
  white-space: nowrap;
}

/* 移动端（≤720px）改显示 brand-short 简称，见文件尾响应式 */
.brand .brand-short {
  display: none;
}

.brand strong {
  max-width: 300px;
  overflow: hidden;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.25;
  text-overflow: ellipsis;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.main-nav {
  display: flex;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 2px;
}

.main-nav a {
  position: relative;
  padding: 10px 13px;
  color: #2c3a3d;
  font-size: 15px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.15s ease;
}

.main-nav a:hover {
  color: var(--brand-ink);
}

.main-nav a.is-active {
  color: var(--brand-ink);
}

.main-nav a.is-active::after {
  position: absolute;
  right: 13px;
  bottom: 4px;
  left: 13px;
  height: 2px;
  content: "";
  background: var(--brand);
}

.header-contact {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-tel {
  display: grid;
  line-height: 1.25;
}

.header-tel span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.06em;
}

.header-tel strong {
  color: var(--ink);
  font-size: 16px;
  font-weight: 800;
  white-space: nowrap;
}

.header-contact .button {
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
  white-space: nowrap;
}

/* 图标态：小屏放不下整句文案时只留信封图标，入口本身不能消失
   （弹窗是全站唯一的「提交振动问题」通道） */
.header-contact .button .btn-ico {
  display: none;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 40px;
  align-items: center;
  justify-content: center;
  padding: 0;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: #fff;
  font: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
}

/* ---------- 5. 主视觉 Hero ---------- */
.hero {
  position: relative;
  display: grid;
  align-content: center;
  gap: 44px;
  min-height: 620px;
  overflow: hidden;
  padding: clamp(76px, 11vh, 120px) var(--pad-x) clamp(56px, 8vh, 80px);
  color: #fff;
  background: var(--deep);
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  content: "";
  background:
    linear-gradient(90deg, rgba(8, 24, 29, 0.96), rgba(8, 24, 29, 0.66) 58%, rgba(8, 24, 29, 0.82)),
    radial-gradient(circle at 24% 22%, rgba(0, 162, 189, 0.20), transparent 34%),
    radial-gradient(circle at 80% 80%, rgba(242, 170, 58, 0.10), transparent 28%);
}

/* 轮播媒体层：绝对定位铺满，不参与 hero 的 grid 布局；
   多张 <picture> 叠放，靠 opacity 交叉淡入（.hero-bg 自身还有 0.58 透明度，两者叠加） */
.hero-media {
  position: absolute;
  inset: 0;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: block;
  opacity: 0;
  transition: opacity 0.9s ease;
}

.hero-slide.is-active {
  opacity: 1;
}

/* 圆点切换器：贴主视觉左下，与正文共用 --pad-x 基准线 */
.hero-dots {
  position: absolute;
  bottom: 26px;
  left: var(--pad-x);
  z-index: 3;
  display: flex;
  gap: 10px;
}

.hero-dot {
  width: 34px;
  height: 4px;
  padding: 0;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.28);
  cursor: pointer;
  transition: background 0.2s ease;
}

.hero-dot:hover,
.hero-dot.is-active {
  background: var(--brand);
}

@media (prefers-reduced-motion: reduce) {
  .hero-slide {
    transition: none;
  }
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.58;
  filter: saturate(1.12) contrast(1.06);
}

.hero-content,
.hero-card {
  position: relative;
  z-index: 2;
}

.hero .eyebrow {
  color: var(--brand);
}

.hero-content {
  max-width: 760px;
}

.hero h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: 0;
}

.hero-subtitle {
  max-width: 640px;
  margin: 20px 0 0;
  color: #eef4f7;
  font-size: clamp(16px, 1.6vw, 19px);
  font-weight: 500;
  line-height: 1.8;
  text-shadow: 0 1px 4px rgba(4, 14, 18, 0.65);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

/* 数据条：扁平三列，替换原玻璃拟态卡 */
.hero-card {
  max-width: 860px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-row div {
  padding: 4px 24px;
  border-left: 1px solid rgba(255, 255, 255, 0.14);
}

.stat-row div:first-child {
  padding-left: 0;
  border-left: 0;
}

.stat-row strong,
.stat-row span {
  display: block;
}

.stat-row strong {
  color: #fff;
  font-size: clamp(22px, 2.4vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  text-shadow: 0 1px 4px rgba(4, 14, 18, 0.6);
}

.stat-row span {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.82);
  font-size: var(--fs-xs);
  font-weight: 600;
  text-shadow: 0 1px 3px rgba(4, 14, 18, 0.6);
}

/* ---------- 6. 内页 Hero（浅色横幅） ---------- */
.page-hero {
  position: relative;
  overflow: hidden;
  color: var(--ink);
  background: linear-gradient(118deg, #e6f3f4 0%, #f2f9f7 55%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
}

.page-hero::before {
  position: absolute;
  inset: 0;
  z-index: 1;
  content: "";
  background: radial-gradient(circle at 82% 30%, rgba(0, 162, 189, 0.12), transparent 42%);
}

.page-hero::after {
  position: absolute;
  top: 50%;
  right: 6%;
  z-index: 1;
  width: 150px;
  height: 150px;
  content: "";
  background: url("../img/vguard-mark.png") center / contain no-repeat;
  opacity: 0.06;
  transform: translateY(-50%);
  pointer-events: none;
}

.page-hero > * {
  position: relative;
  z-index: 2;
}

.page-hero.is-compact {
  padding-block: clamp(40px, 5.5vw, 64px);
  padding-inline: var(--pad-x);
}

.page-hero .eyebrow {
  color: var(--brand-ink);
}

.page-hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(26px, 3.2vw, 40px);
  font-weight: 800;
  line-height: 1.24;
}

.page-hero p {
  max-width: 720px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: var(--fs-base);
}

/* ---------- 6b. 内页 Hero 图片版（六大主导航栏目的横幅） ----------
   只有 wz_site.page_hero_bg 配了图的栏目才带 .has-bg，子页仍是上面的浅色渐变版。
   蒙层用「左深右浅」的横向渐变：标题文字在左侧，右侧留给图片主体。 */
.page-hero.has-bg {
  display: grid;
  align-content: center;
  /* 加高：原浅色版仅靠 padding 撑到 ~230px，这里抬到 320~440px */
  min-height: clamp(320px, 30vw, 440px);
  color: #fff;
  background: var(--deep);
  border-bottom: 0;
}

/* z-index 必须显式压回 0：上面的 .page-hero > * 会把所有直接子元素提到 2，
   不压回来背景图会盖住 z-index:1 的 ::before 蒙层，白字直接压在亮图上不可读 */
.page-hero.has-bg > .hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.page-hero.has-bg::before {
  background:
    linear-gradient(90deg, rgba(8, 24, 29, 0.93) 0%, rgba(8, 24, 29, 0.72) 46%, rgba(8, 24, 29, 0.36) 100%),
    radial-gradient(circle at 82% 30%, rgba(0, 162, 189, 0.18), transparent 42%);
}

/* 盾牌水印压在照片上不可读，图片版直接关掉 */
.page-hero.has-bg::after {
  display: none;
}

.page-hero.has-bg .eyebrow {
  color: var(--brand);
}

.page-hero.has-bg h1 {
  text-shadow: 0 2px 14px rgba(4, 14, 18, 0.45);
}

.page-hero.has-bg p {
  color: rgba(255, 255, 255, 0.84);
}

.page-hero.has-bg .cat-count {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.1);
}

.page-hero.has-bg .button.secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.08);
}

/* ---------- 7. 区块容器与标题 ---------- */
.section {
  padding-block: var(--section-y);
  padding-inline: var(--pad-x);
  background: var(--panel);
}

.section.is-alt {
  background: var(--soft);
}

.section-heading {
  max-width: 780px;
  margin-bottom: clamp(28px, 4vw, 44px);
}

.section-heading.wide {
  max-width: none;
}

.section-heading.is-center {
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-heading h2,
.focus-copy h2,
.contact-section h2 {
  margin: 0;
  font-size: clamp(26px, 3vw, 36px);
  font-weight: 800;
  line-height: 1.26;
  letter-spacing: 0;
}

.section-heading p:not(.eyebrow):not(.heading-en) {
  max-width: 780px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: var(--fs-md);
}

/* 居中标题的描述段落限行宽并居中（宽屏下防止横跨全宽） */
.section-heading.is-center p:not(.eyebrow):not(.heading-en) {
  margin-right: auto;
  margin-left: auto;
}

.section-foot {
  margin-top: clamp(32px, 4vw, 48px);
  text-align: center;
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  padding-block: 14px;
  padding-inline: var(--pad-x);
  color: var(--muted);
  background: var(--panel);
  border-bottom: 1px solid var(--line);
  font-size: var(--fs-sm);
}

.breadcrumb a:hover {
  color: var(--brand-ink);
}

.breadcrumb .sep {
  color: #b3c2c0;
}

.breadcrumb .current {
  color: var(--ink);
  font-weight: 700;
}

/* ---------- 9. 页脚 ---------- */
.site-footer {
  display: grid;
  grid-template-columns: minmax(260px, 1.2fr) repeat(2, minmax(150px, 0.7fr)) minmax(240px, 1fr);
  gap: 40px 32px;
  padding-block: clamp(44px, 5vw, 60px) 0;
  padding-inline: var(--pad-x);
  color: rgba(255, 255, 255, 0.66);
  background: var(--deep);
  font-size: 15px;
}

.site-footer .footer-brand img {
  width: 180px;
  margin-bottom: 16px;
  padding: 8px 12px;
  border-radius: var(--r-md);
  background: #fff;
}

.site-footer .footer-brand strong {
  display: block;
  color: #fff;
  font-size: 16px;
  font-weight: 800;
}

.site-footer .footer-brand p {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--fs-sm);
  line-height: 1.7;
}

.site-footer h4 {
  margin: 0 0 16px;
  padding-bottom: 10px;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 15px;
  font-weight: 700;
}

.site-footer ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer li,
.site-footer li a {
  color: rgba(255, 255, 255, 0.66);
  font-size: var(--fs-sm);
  line-height: 1.6;
}

.site-footer li a:hover {
  color: var(--brand);
}

.site-footer .footer-contact li {
  font-size: var(--fs-sm);
}

.site-footer .footer-contact strong {
  display: block;
  color: #fff;
  font-size: 20px;
  font-weight: 800;
}

.site-footer .footer-qr {
  width: 104px;
  margin-top: 14px;
  padding: 6px;
  border-radius: var(--r-sm);
  background: #fff;
}

.site-footer .footer-qr-tip {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.5);
  font-size: 12px;
}

.site-footer .footer-bottom {
  display: flex;
  flex-wrap: wrap;
  grid-column: 1 / -1;
  gap: 8px 24px;
  align-items: center;
  justify-content: space-between;
  margin-top: 4px;
  padding-block: 18px 22px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  color: rgba(255, 255, 255, 0.45);
  font-size: var(--fs-xs);
}

.site-footer .footer-bottom a {
  color: rgba(255, 255, 255, 0.6);
}

.site-footer .footer-bottom a:hover {
  color: var(--brand);
}

/* ---------- 10. 悬浮工具 ---------- */
.float-bar {
  position: fixed;
  top: 50%;
  right: 16px;
  z-index: var(--z-float);
  display: grid;
  gap: 10px;
  opacity: 0;
  transform: translateY(-50%);
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.float-bar.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.float-btn {
  position: relative;
  display: grid;
  width: 46px;
  height: 46px;
  place-items: center;
  padding: 0;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

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

.float-btn .ico {
  font-size: 18px;
  font-weight: 700;
  line-height: 1;
}

.float-btn .tip {
  position: absolute;
  top: 50%;
  right: calc(100% + 10px);
  padding: 8px 14px;
  color: #fff;
  border-radius: var(--r-sm);
  background: var(--deep);
  box-shadow: var(--shadow-md);
  font-size: var(--fs-sm);
  white-space: nowrap;
  opacity: 0;
  transform: translateY(-50%);
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.float-btn:hover .tip,
.float-btn:focus-visible .tip,
.float-btn.is-open .tip {
  opacity: 1;
}

.to-top {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: var(--z-float);
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: var(--brand-ink);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: #fff;
  box-shadow: var(--shadow-md);
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, background 0.18s ease, color 0.18s ease;
}

.to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
}

.to-top:hover {
  color: #fff;
  border-color: var(--brand-ink);
  background: var(--brand-ink);
}

/* ---------- 11. 响应式（1240 / 1120 / 720，每档仅此一处） ---------- */
@media (max-width: 1240px) {
  .header-contact .button {
    min-width: 42px;
    padding: 0 12px;
  }

  .header-contact .button .btn-ico {
    display: inline;
    font-size: 17px;
  }

  .header-contact .button .btn-text {
    display: none;
  }
}

@media (max-width: 1120px) {
  .site-header {
    grid-template-columns: 1fr auto auto;
    gap: 12px;
    padding-block: 10px;
  }

  .site-header .brand {
    grid-column: 1;
  }

  .site-header .header-contact {
    grid-column: 2;
  }

  .site-header .nav-toggle {
    display: inline-flex;
    grid-column: 3;
  }

  .site-header .main-nav {
    display: none;
    grid-column: 1 / -1;
    grid-row: 2;
    flex-direction: column;
    align-items: stretch;
    margin-top: 10px;
    padding: 6px 14px;
    border: 1px solid var(--line);
    border-radius: var(--r-md);
    background: #fff;
    box-shadow: var(--shadow-md);
  }

  .site-header .main-nav.is-open {
    display: flex;
  }

  .main-nav a {
    padding: 14px 4px;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
    text-align: left;
  }

  .main-nav a:last-child {
    border-bottom: 0;
  }

  .main-nav a.is-active {
    box-shadow: none;
    color: var(--brand-ink);
  }

  .hero {
    min-height: 0;
    gap: 36px;
  }

  .stat-row {
    max-width: 640px;
  }

  .site-footer {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .site-header {
    min-height: 60px;
  }

  .brand img {
    width: 34px;
    height: 34px;
  }

  .brand strong {
    max-width: none;
    font-size: 15px;
    white-space: nowrap;
  }

  .brand .brand-full {
    display: none;
  }

  .brand .brand-short {
    display: inline;
  }

  .header-contact {
    gap: 12px;
    min-width: 0;
  }

  .brand small {
    display: none;
  }

  .header-tel span {
    display: none;
  }

  .header-tel strong {
    font-size: 14px;
  }

  .hero {
    gap: 30px;
    padding-block: 76px 52px;
  }

  /* 移动端背景图本身偏暗：提高图透明度、减薄蒙层，保证设备主体可见 */
  .hero-bg {
    opacity: 0.78;
    filter: saturate(1.1) contrast(1.04) brightness(1.06);
  }

  .hero::before {
    background:
      linear-gradient(180deg, rgba(8, 24, 29, 0.88) 0%, rgba(8, 24, 29, 0.58) 38%, rgba(8, 24, 29, 0.86) 78%, rgba(8, 24, 29, 0.92) 100%),
      radial-gradient(circle at 30% 18%, rgba(0, 162, 189, 0.14), transparent 40%);
  }

  .hero h1 {
    font-size: clamp(30px, 8vw, 36px);
  }

  .hero-subtitle {
    color: #f2f7f9;
  }

  .stat-row span {
    color: rgba(255, 255, 255, 0.85);
  }

  .hero-actions {
    gap: 10px;
    margin-top: 26px;
  }

  .hero-actions .button {
    min-height: 44px;
    padding: 0 18px;
  }

  .stat-row strong {
    font-size: 20px;
  }

  .stat-row span {
    font-size: 12px;
  }

  .stat-row div {
    padding-inline: 14px;
  }

  .page-hero::after {
    display: none;
  }

  /* 图片版横幅：窄屏文字压在图片中部，蒙层改纵向，高度同步收敛 */
  .page-hero.has-bg {
    min-height: 260px;
  }

  .page-hero.has-bg::before {
    background: linear-gradient(180deg, rgba(8, 24, 29, 0.74), rgba(8, 24, 29, 0.6));
  }

  .site-footer {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .site-footer .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }

  /* 窄屏隐藏右侧悬浮条：垂直居中的按钮会压住满宽正文行尾；
     转化入口由页头电话、Hero CTA、页脚承担 */
  .float-bar {
    display: none;
  }
}