/* ============ 设计令牌 ============ */
:root {
  color-scheme: light;
  --color-primary: #0b3d91;
  --color-primary-dark: #081e3e;
  --color-primary-soft: #e8f0fb;
  --color-accent: #00b39b;
  --color-accent-dark: #008f7d;
  --color-background: #ffffff;
  --color-surface: #f5f8fc;
  --color-text: #17233d;
  --color-muted-text: #5c6b82;
  --color-border: #dfe6f0;
  --color-focus: #0b66ff;
  --color-white: #ffffff;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", ui-sans-serif, system-ui, sans-serif;
  --font-display: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", ui-sans-serif, system-ui, sans-serif;
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --space-unit: 0.25rem;
  --content-width: 75rem;
  --shadow-card: 0 12px 32px rgba(11, 61, 145, 0.08);
  --shadow-cta: 0 10px 24px rgba(0, 179, 155, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100dvh;
  line-height: 1.6;
  font-size: 16px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  line-height: 1.25;
  margin: 0 0 0.75em;
  color: var(--color-primary-dark);
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--color-primary);
  text-decoration: none;
}

button,
input,
select,
textarea {
  font: inherit;
}

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

:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

.skip-link {
  left: 1rem;
  position: fixed;
  top: 1rem;
  transform: translateY(-200%);
  z-index: 100;
  background: var(--color-primary);
  color: var(--color-white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
}

.skip-link:focus {
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============ 布局 ============ */
.container {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section-head {
  max-width: 46rem;
  margin: 0 auto 3rem;
  text-align: center;
}

.section-head .eyebrow {
  display: inline-block;
  color: var(--color-accent-dark);
  font-weight: 700;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.section-head h2 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.section-head p {
  color: var(--color-muted-text);
  font-size: 1.0625rem;
}

/* ============ 导航 ============ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--color-primary-dark);
  letter-spacing: 0.02em;
}

.brand-logo {
  display: block;
  height: 38px;
  width: auto;
  max-width: 240px;
}

.footer-brand-card {
  background: var(--color-white);
  border-radius: 12px;
  padding: 10px 14px;
  display: inline-block;
  margin-bottom: 0.875rem;
  box-shadow: 0 4px 16px rgba(2, 18, 46, 0.25);
}

.footer-brand-card .brand-logo {
  height: 42px;
}

.brand svg {
  flex: 0 0 auto;
}

.brand small {
  display: block;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--color-muted-text);
  letter-spacing: 0.06em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: inline-block;
  padding: 0.625rem 1rem;
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  transition: color 0.2s, background-color 0.2s;
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius-sm);
  background: var(--color-primary);
  color: var(--color-white) !important;
  font-weight: 600;
  transition: background-color 0.2s, transform 0.2s;
}

.nav-cta:hover {
  background: var(--color-accent);
  transform: translateY(-1px);
}

.nav-check {
  display: none;
}

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-primary-dark);
  font-size: 1.25rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

/* ============ 页脚 ============ */
.site-footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.82);
  padding: 4rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.footer-grid h4 {
  color: var(--color-white);
  font-size: 0.9375rem;
  margin-bottom: 1rem;
}

.footer-grid a {
  display: block;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.875rem;
  padding: 0.3125rem 0;
  transition: color 0.2s;
}

.footer-grid a:hover {
  color: var(--color-accent);
}

.footer-about {
  font-size: 0.875rem;
  line-height: 1.8;
}

.footer-about .brand {
  color: var(--color-white);
  margin-bottom: 0.75rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

/* ============ 按钮 ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-cta);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: var(--shadow-cta);
}

.btn-accent:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-soft);
}

.btn-ghost {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-ghost:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.1);
}

/* ============ 首页 Hero ============ */
.hero {
  background:
    radial-gradient(1200px 480px at 85% -10%, rgba(0, 179, 155, 0.16), transparent 60%),
    radial-gradient(900px 420px at 10% 10%, rgba(11, 61, 145, 0.14), transparent 60%),
    linear-gradient(180deg, #eef4fc 0%, var(--color-background) 100%);
  padding: 6rem 0 5rem;
  overflow: hidden;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 3rem;
  align-items: center;
}

.hero h1 {
  font-size: 2.875rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero h1 .accent {
  background: linear-gradient(120deg, var(--color-primary), var(--color-accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero p.lead {
  font-size: 1.1875rem;
  color: var(--color-muted-text);
  max-width: 34rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-visual {
  position: relative;
}

.hero-visual svg {
  width: 100%;
  height: auto;
}

.hero-ticker {
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 16px;
  overflow: hidden;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.hero-ticker-inner {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  white-space: nowrap;
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
  color: #cfe4ff;
  animation: hero-ticker 22s linear infinite;
}

.hero-ticker-inner span {
  display: inline-flex;
  align-items: center;
}

.hero-ticker-inner span::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #35dad5;
  margin-right: 0.5rem;
}

@keyframes hero-ticker {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 4rem;
  padding: 1.75rem 2rem;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.stat span {
  font-size: 0.875rem;
  color: var(--color-muted-text);
}

/* ============ 产品矩阵 ============ */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.product-card {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  padding: 1.75rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s, box-shadow 0.25s, border-color 0.25s;
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(11, 61, 145, 0.14);
  border-color: rgba(11, 61, 145, 0.35);
}

.product-card .p-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-soft);
  color: var(--color-primary);
}

.product-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.product-card .p-layer {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  letter-spacing: 0.05em;
}

.product-card p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  flex: 1;
  margin-bottom: 0.25rem;
}

.product-card .p-link {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-primary);
}

.product-card .p-link:hover {
  color: var(--color-accent-dark);
}

/* 分层区块 */
.layer-block {
  margin-top: 4rem;
}

.layer-block .layer-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.layer-block .layer-head h3 {
  font-size: 1.375rem;
  margin: 0;
}

.layer-block .layer-head p {
  color: var(--color-muted-text);
  margin: 0;
}

/* ============ 解决方案场景 ============ */
.scene-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.scene-card {
  position: relative;
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--color-primary-dark), #123c78);
  color: var(--color-white);
  overflow: hidden;
}

.scene-card::after {
  content: "";
  position: absolute;
  right: -3rem;
  top: -3rem;
  width: 10rem;
  height: 10rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 179, 155, 0.35), transparent 70%);
}

.scene-card h3 {
  color: var(--color-white);
  font-size: 1.25rem;
  position: relative;
  z-index: 1;
}

.scene-card p {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.9375rem;
  position: relative;
  z-index: 1;
}

.scene-card .scene-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  position: relative;
  z-index: 1;
}

/* ============ 案例 / 新闻 卡片 ============ */
.case-grid,
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.case-card,
.news-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.25s, box-shadow 0.25s;
}

.case-card:hover,
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(11, 61, 145, 0.14);
}

.case-cover,
.news-cover {
  height: 10.5rem;
  background: linear-gradient(135deg, var(--color-primary-soft), #d6e6f8);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.case-body,
.news-body {
  padding: 1.5rem;
}

.case-body h3,
.news-body h3 {
  font-size: 1.0625rem;
  margin-bottom: 0.5rem;
}

.case-meta,
.news-meta {
  font-size: 0.8125rem;
  color: var(--color-muted-text);
  margin-bottom: 0.75rem;
}

.case-metrics {
  display: flex;
  gap: 1.25rem;
  margin-top: 1rem;
  flex-wrap: wrap;
}

.case-metrics strong {
  color: var(--color-accent-dark);
  font-size: 1.125rem;
  display: block;
}

.case-metrics span {
  font-size: 0.8125rem;
  color: var(--color-muted-text);
}

/* ============ 页内页眉 ============ */
.page-hero {
  background: linear-gradient(180deg, var(--color-primary-dark), #103a74 70%, #123f7e 100%);
  color: var(--color-white);
  padding: 4.5rem 0;
}

.page-hero .eyebrow {
  color: var(--color-accent);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.page-hero h1 {
  color: var(--color-white);
  font-size: 2.5rem;
  margin: 0.5rem 0;
}

.page-hero p {
  color: rgba(255, 255, 255, 0.78);
  max-width: 40rem;
  font-size: 1.0625rem;
}

.breadcrumb {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.8);
}

/* ============ 产品详情页 ============ */
.product-features {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.feature-item .f-icon {
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-item h4 {
  font-size: 1rem;
  margin-bottom: 0.375rem;
}

.feature-item p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  margin: 0;
}

.product-value {
  background: var(--color-surface);
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.value-item {
  text-align: center;
  padding: 1.5rem;
}

.value-item strong {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.value-item span {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
}

/* 适用场景 */
.scenario-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.scenario-item {
  padding: 1.5rem;
  border-left: 3px solid var(--color-accent);
  background: var(--color-white);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-card);
}

.scenario-item h4 {
  font-size: 1.0625rem;
  margin-bottom: 0.375rem;
}

.scenario-item p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  margin: 0;
}

/* 架构示意 */
.arch-wrap {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-card);
}

.arch-wrap svg {
  width: 100%;
  height: auto;
}

/* 组合方案（解决方案页） */
.package-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.package-card {
  display: flex;
  flex-direction: column;
  padding: 2rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
  transition: transform 0.25s, box-shadow 0.25s;
}

.package-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 48px rgba(11, 61, 145, 0.14);
}

.package-card h3 {
  font-size: 1.25rem;
}

.package-card ul {
  margin: 1rem 0;
  padding-left: 1.25rem;
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  flex: 1;
}

.package-card li {
  margin-bottom: 0.375rem;
}

.package-flow {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0.75rem 0 1.25rem;
}

.package-flow span {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.8125rem;
  font-weight: 600;
}

/* ============ 表格（对比/参数） ============ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--color-border);
}

.data-table th,
.data-table td {
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.9375rem;
  border-bottom: 1px solid var(--color-border);
}

.data-table th {
  background: var(--color-primary-soft);
  color: var(--color-primary-dark);
  font-weight: 700;
}

.data-table tr:last-child td {
  border-bottom: none;
}

/* ============ 新闻列表 ============ */
.news-list {
  max-width: 52rem;
  margin: 0 auto;
}

.news-row {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.news-row:last-child {
  border-bottom: none;
}

.news-row time {
  flex: 0 0 6rem;
  font-weight: 700;
  color: var(--color-primary);
  font-size: 1.0625rem;
}

.news-row h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.news-row p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  margin: 0;
}

.news-tag {
  display: inline-block;
  padding: 0.25rem 0.625rem;
  border-radius: 999px;
  background: var(--color-primary-soft);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  flex: 0 0 auto;
}

/* ============ 关于 ============ */
.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.timeline {
  border-left: 2px solid var(--color-primary-soft);
  margin-left: 0.5rem;
  padding-left: 1.5rem;
}

.timeline li {
  list-style: none;
  margin-bottom: 1.5rem;
  position: relative;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -1.78rem;
  top: 0.375rem;
  width: 0.875rem;
  height: 0.875rem;
  border-radius: 50%;
  background: var(--color-accent);
  border: 3px solid var(--color-white);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline strong {
  display: block;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.timeline p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  margin: 0;
}

/* ============ 联系表单 ============ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-white);
  color: var(--color-text);
}

.form-group textarea {
  min-height: 8rem;
  resize: vertical;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
  border-color: var(--color-primary);
}

.contact-info-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}

.contact-info-item .c-icon {
  flex: 0 0 auto;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.contact-info-item h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.contact-info-item p {
  color: var(--color-muted-text);
  font-size: 0.9375rem;
  margin: 0;
}

/* ============ 响应式 ============ */
@media (max-width: 1023px) {
  .hero-inner {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .product-grid,
  .scene-grid,
  .case-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .package-grid,
  .about-intro,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 767px) {
  .section {
    padding: 3.5rem 0;
  }

  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 4.25rem;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--color-white);
    border-bottom: 1px solid var(--color-border);
    padding: 0.5rem 1rem 1rem;
    box-shadow: 0 16px 32px rgba(11, 61, 145, 0.12);
  }

  .nav-check:checked ~ .nav-links {
    display: flex;
  }

  .nav-links a {
    padding: 0.875rem 0.75rem;
  }

  .nav-cta {
    margin-top: 0.5rem;
    justify-content: center;
  }

  .hero {
    padding: 3.5rem 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: 1.25rem;
    gap: 1.25rem;
  }

  .product-grid,
  .scene-grid,
  .case-grid,
  .news-grid,
  .value-grid,
  .scenario-list,
  .product-features {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section-head h2 {
    font-size: 1.625rem;
  }

  .page-hero h1 {
    font-size: 1.875rem;
  }

  .news-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .data-table {
    display: block;
    overflow-x: auto;
  }
}