:root {
  --brand: #f04a3e;
  --brand-dark: #c93a30;
  --brand-light: #ff7a6e;
  --brand-soft: rgba(240, 74, 62, 0.12);
  --accent: #ffb03a;
  --accent-soft: rgba(255, 176, 58, 0.16);
  --bg: #f7f8fb;
  --bg-elevated: #ffffff;
  --bg-muted: #eef1f6;
  --text: #1c2230;
  --text-secondary: #4a5468;
  --text-muted: #7a8498;
  --border: #e4e8f0;
  --border-strong: #d3d9e4;
  --shadow-sm: 0 2px 8px rgba(28, 34, 48, 0.06);
  --shadow-md: 0 8px 28px rgba(28, 34, 48, 0.1);
  --shadow-lg: 0 18px 48px rgba(28, 34, 48, 0.16);
  --glass-bg: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.6);
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;
  --header-h: 70px;
  --maxw: 1200px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

html[data-theme="dark"] {
  --bg: #0f131b;
  --bg-elevated: #171d28;
  --bg-muted: #1e2532;
  --text: #eef1f7;
  --text-secondary: #b3bccd;
  --text-muted: #8a94a8;
  --border: #262f3f;
  --border-strong: #33405a;
  --brand-soft: rgba(240, 74, 62, 0.2);
  --accent-soft: rgba(255, 176, 58, 0.18);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 28px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.6);
  --glass-bg: rgba(23, 29, 40, 0.72);
  --glass-border: rgba(255, 255, 255, 0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
  overflow-x: hidden;
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.25s var(--ease);
}

a:hover {
  color: var(--brand-dark);
}

h1,
h2,
h3,
h4 {
  line-height: 1.35;
  color: var(--text);
  margin: 0 0 0.6em;
  font-weight: 700;
  letter-spacing: 0.2px;
}

h1 {
  font-size: clamp(1.6rem, 3.6vw, 2.6rem);
}

h2 {
  font-size: clamp(1.35rem, 2.6vw, 1.95rem);
}

h3 {
  font-size: clamp(1.1rem, 1.9vw, 1.35rem);
}

h4 {
  font-size: 1.02rem;
  color: var(--text-secondary);
}

p {
  margin: 0 0 1em;
  color: var(--text-secondary);
}

ul,
ol {
  margin: 0 0 1em;
  padding-left: 1.4em;
  color: var(--text-secondary);
}

li {
  margin-bottom: 0.45em;
}

strong {
  color: var(--text);
}

blockquote {
  margin: 0 0 1em;
  padding: 1em 1.25em;
  background: var(--brand-soft);
  border-left: 4px solid var(--brand);
  border-radius: var(--radius-sm);
}

blockquote p {
  margin: 0;
  color: var(--text-secondary);
  font-style: italic;
}

time {
  color: var(--text-muted);
  font-size: 0.86rem;
}

/* ===== 顶部公告条 ===== */
.topbar {
  position: relative;
  z-index: 60;
  padding: 8px 16px;
  text-align: center;
  font-size: 0.82rem;
  color: #fff;
  background: linear-gradient(90deg, var(--brand-dark), var(--brand), var(--accent));
  background-size: 200% 100%;
  animation: topbarFlow 12s linear infinite;
  letter-spacing: 0.3px;
}

@keyframes topbarFlow {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* ===== 导航区 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--glass-bg);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s var(--ease), background-color 0.35s var(--ease);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.brand a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.brand-logo {
  width: 40px;
  height: 40px;
  transition: transform 0.4s var(--ease);
}

.brand a:hover .brand-logo {
  transform: rotate(-8deg) scale(1.06);
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: 1px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.main-nav {
  flex: 1;
  min-width: 0;
}

.main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav li {
  margin: 0;
}

.main-nav a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--brand);
  background: var(--brand-soft);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-search {
  display: flex;
  align-items: center;
  background: var(--bg-muted);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  overflow: hidden;
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.site-search:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

.site-search input {
  border: 0;
  outline: 0;
  background: transparent;
  padding: 8px 6px 8px 16px;
  width: 170px;
  font-size: 0.86rem;
  color: var(--text);
  font-family: inherit;
}

.site-search input::placeholder {
  color: var(--text-muted);
}

.site-search button {
  border: 0;
  cursor: pointer;
  padding: 8px 16px;
  font-size: 0.84rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  font-family: inherit;
  transition: filter 0.25s var(--ease);
}

.site-search button:hover {
  filter: brightness(1.08);
}

.menu-toggle,
.theme-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  color: var(--text);
  font-size: 1.1rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s var(--ease), background-color 0.25s var(--ease);
}

.menu-toggle:hover,
.theme-toggle:hover {
  transform: scale(1.08);
  background: var(--brand-soft);
}

.theme-toggle {
  display: inline-flex;
}

/* ===== Banner ===== */
.banner {
  position: relative;
  max-width: var(--maxw);
  margin: 28px auto 0;
  padding: 0 20px;
}

.banner-slides {
  position: relative;
  min-height: 400px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #ff6b5e 0%, #f04a3e 38%, #c93a30 70%, #8f2a22 100%);
  box-shadow: var(--shadow-lg);
}

.banner-slides::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 82% 18%, rgba(255, 176, 58, 0.55), transparent 42%),
    radial-gradient(circle at 12% 88%, rgba(255, 255, 255, 0.22), transparent 46%);
  pointer-events: none;
}

.banner-slides::after {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.18);
  pointer-events: none;
}

.banner-slide {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(28px, 5vw, 64px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(18px);
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease),
    visibility 0.6s;
}

.banner-slide.active {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.banner-slide h1,
.banner-slide h2 {
  color: #fff;
  max-width: 780px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.18);
}

.banner-slide p {
  color: rgba(255, 255, 255, 0.92);
  max-width: 720px;
  font-size: clamp(0.92rem, 1.5vw, 1.05rem);
}

.banner-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  margin-top: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--brand-dark);
  background: #fff;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease),
    color 0.3s var(--ease);
}

.banner-cta:hover {
  color: var(--brand);
  transform: translateY(-3px);
  box-shadow: 0 16px 34px rgba(0, 0, 0, 0.28);
}

.banner-controls {
  position: absolute;
  right: 44px;
  bottom: 28px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.banner-prev,
.banner-next {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.16);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.banner-prev:hover,
.banner-next:hover {
  background: rgba(255, 255, 255, 0.32);
  transform: scale(1.08);
}

.banner-dots {
  display: flex;
  gap: 8px;
  margin-left: 4px;
}

.banner-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  background: rgba(255, 255, 255, 0.45);
  transition: width 0.3s var(--ease), background-color 0.3s var(--ease);
}

.banner-dots button.active {
  width: 26px;
  border-radius: var(--radius-pill);
  background: #fff;
}

/* ===== 面包屑 ===== */
.breadcrumb {
  max-width: var(--maxw);
  margin: 20px auto 0;
  padding: 0 20px;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--border-strong);
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

/* ===== 数据统计 ===== */
.stats {
  max-width: var(--maxw);
  margin: 28px auto 0;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 26px 16px;
  text-align: center;
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.stat-item:hover {
  transform: translateY(-6px);
  border-color: var(--brand);
  box-shadow: var(--shadow-md);
}

.stat-num {
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, var(--brand), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat-label {
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===== 通用区块 ===== */
.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 56px 20px 0;
}

.section > h2 {
  position: relative;
  padding-left: 18px;
  margin-bottom: 1em;
}

.section > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.18em;
  bottom: 0.18em;
  width: 5px;
  border-radius: var(--radius-pill);
  background: linear-gradient(180deg, var(--brand), var(--accent));
}

/* 滚动进入动画 */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== 时间线 ===== */
.timeline {
  list-style: none;
  padding: 0;
  margin: 0 0 1.4em;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--brand), var(--accent));
  opacity: 0.5;
}

.timeline li {
  position: relative;
  padding-left: 30px;
  margin-bottom: 1em;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--bg-elevated);
  border: 3px solid var(--brand);
  box-shadow: 0 0 0 3px var(--brand-soft);
}

/* ===== 产品卡片 ===== */
.product-card,
.case-card,
.article-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.product-card:hover,
.case-card:hover,
.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--brand);
  box-shadow: var(--shadow-md);
}

.product-card h3,
.case-card h3,
.article-card h3 {
  margin-bottom: 0.5em;
}

.product-card h4 {
  margin: 0.9em 0 0.35em;
  font-size: 0.92rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--brand);
}

.product-card h4 + p {
  margin-bottom: 0;
}

/* ===== 新闻 ===== */
.news-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.news-list li {
  margin: 0;
  padding: 22px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

.news-list li:hover {
  transform: translateY(-5px);
  border-color: var(--brand);
  box-shadow: var(--shadow-md);
}

.news-list h3 {
  margin: 8px 0 0.4em;
  font-size: 1.05rem;
}

.news-list p {
  margin: 0;
  font-size: 0.9rem;
}

/* ===== 文章卡片 ===== */
.article-card {
  display: flex;
  flex-direction: column;
}

.article-meta {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.7em;
}

.article-summary {
  flex: 1;
  font-size: 0.94rem;
}

.read-more {
  align-self: flex-start;
  margin-top: 6px;
  padding: 7px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--brand);
  background: var(--brand-soft);
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease),
    transform 0.25s var(--ease);
}

.read-more:hover {
  color: #fff;
  background: var(--brand);
  transform: translateX(4px);
}

/* ===== FAQ ===== */
.faq-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.faq-item[open] {
  border-color: var(--brand);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 22px;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  position: relative;
  padding-right: 52px;
  transition: background-color 0.25s var(--ease);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--brand);
  background: var(--brand-soft);
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease),
    color 0.3s var(--ease);
}

.faq-item[open] summary::after {
  content: "−";
  color: #fff;
  background: var(--brand);
  transform: translateY(-50%) rotate(180deg);
}

.faq-item summary:hover {
  background: var(--brand-soft);
}

.faq-item p {
  padding: 0 22px 20px;
  margin: 0;
  font-size: 0.94rem;
}

/* ===== 联系我们 ===== */
.contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.4em;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
}

.contact-list li {
  margin: 0;
  padding: 14px 18px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.contact-list li:hover {
  border-color: var(--brand);
  transform: translateX(4px);
}

address {
  font-style: normal;
}

/* ===== 站点地图 / 友情链接 ===== */
.sitemap-list,
.friend-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.sitemap-list li,
.friend-links li {
  margin: 0;
}

.sitemap-list a,
.friend-links a {
  display: inline-block;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.88rem;
  color: var(--text-secondary);
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  transition: color 0.25s var(--ease), background-color 0.25s var(--ease),
    border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.sitemap-list a:hover,
.friend-links a:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  border-color: transparent;
  transform: translateY(-3px);
}

/* ===== 页脚 ===== */
.site-footer {
  margin-top: 72px;
  padding: 48px 0 32px;
  background: linear-gradient(180deg, transparent, var(--bg-muted));
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.footer-inner section {
  min-width: 0;
}

.footer-inner h2 {
  font-size: 1rem;
  margin-bottom: 0.7em;
  color: var(--text);
}

.footer-inner p {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin: 0;
}

/* ===== 返回顶部 ===== */
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 40;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 0;
  cursor: pointer;
  font-size: 1.2rem;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-dark));
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.3s var(--ease), transform 0.3s var(--ease),
    visibility 0.3s, box-shadow 0.3s var(--ease);
}

.back-to-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: var(--shadow-lg);
}

/* ===== 焦点可见性 ===== */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ===== 响应式：平板 ===== */
@media (max-width: 1024px) {
  .main-nav {
    display: none;
  }

  .main-nav.open {
    display: block;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    padding: 12px 20px 18px;
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
  }

  .main-nav.open ul {
    flex-direction: column;
    gap: 2px;
  }

  .main-nav.open a {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.96rem;
  }

  .header-inner {
    position: relative;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .site-search input {
    width: 130px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .news-list {
    grid-template-columns: 1fr;
  }
}

/* ===== 响应式：手机 ===== */
@media (max-width: 640px) {
  :root {
    --header-h: 62px;
  }

  body {
    font-size: 15px;
  }

  .topbar {
    font-size: 0.74rem;
    line-height: 1.5;
    padding: 7px 12px;
  }

  .header-inner {
    padding: 0 14px;
    gap: 12px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .brand-logo {
    width: 34px;
    height: 34px;
  }

  .site-search {
    display: none;
  }

  .banner {
    margin-top: 18px;
    padding: 0 14px;
  }

  .banner-slides {
    min-height: 380px;
    border-radius: var(--radius);
  }

  .banner-slide {
    padding: 26px 22px 64px;
  }

  .banner-controls {
    right: 20px;
    bottom: 18px;
  }

  .banner-prev,
  .banner-next {
    width: 34px;
    height: 34px;
    font-size: 1.1rem;
  }

  .breadcrumb {
    padding: 0 14px;
    margin-top: 14px;
  }

  .stats {
    padding: 0 14px;
    gap: 10px;
    margin-top: 18px;
  }

  .stat-item {
    padding: 18px 10px;
  }

  .stat-label {
    font-size: 0.74rem;
  }

  .section {
    padding: 40px 14px 0;
  }

  .product-card,
  .case-card,
  .article-card,
  .news-list li {
    padding: 18px;
  }

  .contact-list {
    grid-template-columns: 1fr;
  }

  .faq-item summary {
    padding: 14px 16px;
    padding-right: 46px;
    font-size: 0.94rem;
  }

  .faq-item p {
    padding: 0 16px 16px;
  }

  .back-to-top {
    right: 14px;
    bottom: 14px;
    width: 42px;
    height: 42px;
  }

  .footer-inner {
    padding: 0 14px;
    gap: 22px;
  }
}

/* ===== 减少动效偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ===== 打印 ===== */
@media print {
  .topbar,
  .site-header,
  .banner-controls,
  .back-to-top,
  .site-search,
  .menu-toggle,
  .theme-toggle {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }

  .banner-slides {
    background: #f04a3e !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}