/* ============================================================
   AI 现代风主题层（内页：关于/产品/服务/新闻/客户/反馈/搜索/详情/404）
   - 复用首页的视觉语言：更大圆角、柔和阴影、品牌渐变、深色/浅色两套
   - 做法：先把站点自身的 --color-* / --radius / --shadow-* 变量重映射，
     再由这些变量驱动的全部旧组件自动升级；随后只对少量结构做精修
   - 必须加载在 style.css / components.css / theme-ai.css 之后
   - 首页（main.page-home-ai）使用 .ai-* 类，不受本文件影响
   ============================================================ */

/* ============================================================
   1. 设计变量重映射（清爽浅色 = 默认）
   ============================================================ */
:root {
  --color-primary: #2b5ee9;
  --color-primary-dark: #1d4ed8;
  --color-primary-light: #5b8def;
  --color-primary-soft: rgba(43, 94, 233, 0.08);
  --color-accent: #0ea5b7;
  --color-accent-soft: rgba(14, 165, 183, 0.1);

  --color-text: #17233b;
  --color-text-light: #5b6b85;
  --color-bg: #ffffff;
  --color-bg-card: #ffffff;
  --color-bg-page: #f5f8fd;
  --color-bg-soft: #f1f6ff;
  --color-border: rgba(15, 35, 80, 0.09);
  --color-border-strong: rgba(15, 35, 80, 0.16);

  --radius: 20px;
  --radius-sm: 12px;
  --shadow-sm: 0 1px 2px rgba(16, 35, 80, 0.04), 0 10px 26px rgba(16, 35, 80, 0.06);
  --shadow-md: 0 4px 12px rgba(16, 35, 80, 0.06), 0 16px 40px rgba(16, 35, 80, 0.1);
  --shadow-lg: 0 8px 20px rgba(16, 35, 80, 0.08), 0 28px 64px rgba(16, 35, 80, 0.14);
}

html[data-theme="dark"] {
  --color-primary: #5b8def;
  --color-primary-dark: #4478e0;
  --color-primary-light: #93c0ff;
  --color-primary-soft: rgba(110, 168, 254, 0.14);
  --color-accent: #22d3ee;
  --color-accent-soft: rgba(34, 211, 238, 0.14);

  --color-text: #eaf1ff;
  --color-text-light: #9fb0cd;
  --color-bg: #0a1428;
  --color-bg-card: rgba(255, 255, 255, 0.035);
  --color-bg-page: #060c1c;
  --color-bg-soft: #0a1428;
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-strong: rgba(255, 255, 255, 0.16);

  --shadow-sm: 0 18px 40px rgba(2, 6, 20, 0.4);
  --shadow-md: 0 24px 56px rgba(2, 6, 20, 0.5);
  --shadow-lg: 0 30px 70px rgba(2, 6, 20, 0.55);
}

/* ============================================================
   2. 内页页头（.page-hero）
   ============================================================ */
.page-hero {
  position: relative;
  padding: 84px 0 68px;
  text-align: center;
  background: linear-gradient(180deg, #ffffff 0%, #eef4ff 100%);
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
  isolation: isolate;
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: -60% -20% auto;
  height: 200%;
  z-index: -1;
  background-image:
    linear-gradient(rgba(15, 35, 80, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 35, 80, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(62% 60% at 50% 12%, #000 22%, transparent 76%);
  -webkit-mask-image: radial-gradient(62% 60% at 50% 12%, #000 22%, transparent 76%);
}

.page-hero::after {
  content: "";
  position: absolute;
  left: 50%;
  top: -180px;
  width: 900px;
  height: 420px;
  margin-left: -450px;
  z-index: -1;
  border-radius: 50%;
  filter: blur(70px);
  background: radial-gradient(circle at 50% 50%, rgba(43, 94, 233, 0.18), transparent 68%);
}

html[data-theme="dark"] .page-hero {
  background: linear-gradient(180deg, #070e20 0%, #060c1c 100%);
}

html[data-theme="dark"] .page-hero::before {
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.045) 1px, transparent 1px);
}

html[data-theme="dark"] .page-hero::after {
  background: radial-gradient(circle at 50% 50%, rgba(43, 94, 233, 0.45), transparent 68%);
}

.page-hero h1 {
  font-size: clamp(30px, 3.6vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--color-text);
}

.page-hero p {
  max-width: 660px;
  margin: 16px auto 0;
  color: var(--color-text-light);
  font-size: 17px;
  line-height: 1.8;
}

.breadcrumb {
  margin-top: 20px;
  font-size: 14px;
  color: var(--color-text-light);
}

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

/* ============================================================
   3. 区块与标题
   ============================================================ */
.section {
  padding: 84px 0;
}

.section--soft {
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header h2 {
  color: var(--color-text);
  font-size: clamp(26px, 3vw, 38px);
  letter-spacing: -0.01em;
}

.section-header p {
  color: var(--color-text-light);
}

.eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

html[data-theme="dark"] .eyebrow {
  color: var(--color-accent);
}

/* ============================================================
   4. 卡片统一精修
   ============================================================ */
.feature-card,
.product-card,
.news-card,
.customer-card,
.mission-card,
.cert-card,
.team-card,
.download-item,
.cap-section {
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease,
    background 0.28s ease;
}

.feature-card:hover,
.product-card:hover,
.news-card:hover,
.customer-card:hover,
.mission-card:hover,
.cert-card:hover,
.team-card:hover,
.download-item:hover,
.cap-section:hover {
  transform: translateY(-6px);
  border-color: rgba(43, 94, 233, 0.35);
  box-shadow: var(--shadow-md);
}

html[data-theme="dark"] .feature-card:hover,
html[data-theme="dark"] .product-card:hover,
html[data-theme="dark"] .news-card:hover,
html[data-theme="dark"] .customer-card:hover,
html[data-theme="dark"] .mission-card:hover,
html[data-theme="dark"] .cert-card:hover,
html[data-theme="dark"] .team-card:hover,
html[data-theme="dark"] .download-item:hover,
html[data-theme="dark"] .cap-section:hover {
  border-color: rgba(110, 168, 254, 0.45);
  background: rgba(255, 255, 255, 0.055);
}

.feature-card .icon,
.cap-icon {
  border-radius: 14px;
  background: linear-gradient(140deg, rgba(43, 94, 233, 0.12), rgba(14, 165, 183, 0.1));
  border: 1px solid rgba(43, 94, 233, 0.18);
  color: var(--color-primary);
}

html[data-theme="dark"] .feature-card .icon,
html[data-theme="dark"] .cap-icon {
  background: linear-gradient(140deg, rgba(43, 94, 233, 0.35), rgba(34, 211, 238, 0.18));
  border-color: rgba(110, 168, 254, 0.28);
  color: #67e8f9;
}

.feature-card .icon svg,
.cap-icon svg {
  color: inherit;
}

.product-card__thumb,
.news-card__thumb {
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, rgba(43, 94, 233, 0.14), rgba(124, 58, 237, 0.12));
}

.product-card__thumb img,
.news-card__thumb img {
  transition: transform 0.5s ease;
}

.product-card:hover .product-card__thumb img,
.news-card:hover .news-card__thumb img {
  transform: scale(1.04);
}

.news-card__cat,
.product-card__tag {
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

.news-card__more,
.download-item__info a,
.product-card__body a {
  color: var(--color-primary);
  font-weight: 600;
}

html[data-theme="dark"] .news-card__more,
html[data-theme="dark"] .download-item__info a {
  color: var(--color-accent);
}

/* 静态面板（不位移） */
.contact-form,
.article,
.demo-box,
.empty-state,
.search-section {
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
}

/* 联系方式卡片：原本就是彩底白字，必须保持白字可读 */
.contact-info-card {
  border-radius: var(--radius);
  border: 1px solid transparent;
  background: linear-gradient(160deg, var(--color-primary) 0%, #1e40af 100%);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.contact-info-card h3,
.contact-info-card strong,
.contact-info-card .contact-item span,
.contact-info-card a {
  color: #fff;
}

.contact-info-card > p {
  color: rgba(255, 255, 255, 0.88);
}

.contact-item .icon {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

html[data-theme="dark"] .contact-info-card {
  background: linear-gradient(160deg, #2b5ee9 0%, #16236b 100%);
}

/* 产品标签在深色底上要用亮色，避免深字压深底 */
html[data-theme="dark"] .product-card__tag {
  background: rgba(110, 168, 254, 0.16);
  color: #93c0ff;
}

html[data-theme="dark"] .product-card__tag.tag-hardware {
  background: rgba(34, 211, 238, 0.16);
  color: #67e8f9;
}

/* ============================================================
   5. 按钮 / 标签 / 分页
   ============================================================ */
.btn {
  border-radius: 12px;
  font-weight: 600;
}

.btn--primary {
  background: linear-gradient(135deg, #2b5ee9, #3b82f6);
  border-color: transparent;
  box-shadow: 0 12px 30px rgba(43, 94, 233, 0.28);
}

.btn--primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #2b5ee9);
  box-shadow: 0 18px 40px rgba(43, 94, 233, 0.4);
}

.btn--outline {
  border-color: var(--color-border-strong);
  color: var(--color-text);
}

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

.filter-tabs a {
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  color: var(--color-text-light);
  font-weight: 500;
  transition: all 0.22s ease;
}

.filter-tabs a:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.filter-tabs a.is-active {
  background: linear-gradient(135deg, #2b5ee9, #3b82f6);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 10px 24px rgba(43, 94, 233, 0.28);
}

.pagination a,
.pagination span {
  border-radius: 10px;
  border-color: var(--color-border);
}

.pagination .is-current,
.pagination a.is-current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* ============================================================
   6. 表单
   ============================================================ */
.contact-form input,
.contact-form select,
.contact-form textarea,
.form-group input,
.form-group select,
.form-group textarea {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus,
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px var(--color-primary-soft);
}

.contact-form label,
.form-group label {
  color: var(--color-text);
  font-weight: 500;
}

.captcha-hint,
.form-success {
  color: var(--color-text-light);
}

.captcha-hint {
  font-size: 12px;
  margin-top: 6px;
}

/* 站点原有页脚始终是深色底（#0f172a），分支标题保持白字 */
.footer-branch__name {
  color: #fff;
}

/* 首页 AI 页脚跟随主题底色，改用主题标题色 */
body:has(main.page-home-ai) .footer-branch__name {
  color: var(--ai-heading);
}

.form-success.is-visible {
  color: var(--color-primary);
  font-weight: 600;
}

/* ============================================================
   7. 数据带 / CTA 带
   ============================================================ */
.stats-band {
  background:
    radial-gradient(600px 300px at 12% 10%, rgba(110, 168, 254, 0.35), transparent 60%),
    linear-gradient(120deg, #16307a 0%, #2b5ee9 48%, #7c3aed 100%);
  color: #fff;
}

.stats-band .num {
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  letter-spacing: -0.02em;
}

.cta-band {
  background:
    radial-gradient(600px 320px at 88% 10%, rgba(34, 211, 238, 0.28), transparent 62%),
    linear-gradient(120deg, #16307a 0%, #2b5ee9 50%, #7c3aed 100%);
  color: #fff;
}

/* ============================================================
   8. 文章 / 详情页
   ============================================================ */
.article__meta {
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-light);
}

.article__body {
  color: var(--color-text);
}

.article__body h2,
.article__body h3 {
  color: var(--color-text);
}

.article__body blockquote {
  border-left: 3px solid var(--color-primary);
  background: var(--color-primary-soft);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  color: var(--color-text-light);
}

.article__nav a,
.article__nav .btn {
  border-radius: 12px;
}

.news-single-img,
.product-gallery,
.product-gallery__slide {
  border-radius: var(--radius);
  overflow: hidden;
}

/* ============================================================
   9. 搜索 / 404
   ============================================================ */
.search-section input {
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text);
}

.result-list .download-item h4 a {
  color: var(--color-text);
}

.notfound {
  color: var(--color-text);
}

.notfound__code {
  background: linear-gradient(120deg, #2b5ee9, #7c3aed);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-weight: 800;
}

/* ============================================================
   10. 下载列表（产品服务 / 资料中心）
   ============================================================ */
.download-section {
  margin-bottom: 64px;
  scroll-margin-top: 96px;
}

.download-section:last-child {
  margin-bottom: 0;
}

.eyebrow--icon {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.eyebrow-icon-img {
  width: 22px;
  height: 22px;
  object-fit: contain;
}

.download-list {
  display: grid;
  gap: 14px;
}

.download-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
  padding: 22px 24px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
  transition: transform 0.26s ease, border-color 0.26s ease, box-shadow 0.26s ease;
}

.download-item:hover {
  transform: translateY(-4px);
  border-color: rgba(43, 94, 233, 0.35);
  box-shadow: var(--shadow-md);
}

html[data-theme="dark"] .download-item:hover {
  border-color: rgba(110, 168, 254, 0.45);
}

.download-item__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  font-size: 24px;
  line-height: 1;
  background: linear-gradient(140deg, rgba(43, 94, 233, 0.12), rgba(14, 165, 183, 0.1));
  border: 1px solid rgba(43, 94, 233, 0.18);
}

html[data-theme="dark"] .download-item__icon {
  background: linear-gradient(140deg, rgba(43, 94, 233, 0.35), rgba(34, 211, 238, 0.18));
  border-color: rgba(110, 168, 254, 0.28);
}

.download-item__icon-img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}

.download-item__info h4 {
  color: var(--color-text);
  font-size: 17px;
  line-height: 1.5;
}

.download-item__info p {
  margin-top: 6px;
  color: var(--color-text-light);
  font-size: 14px;
  line-height: 1.7;
}

.download-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.download-item__meta span {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--color-text-light);
  background: var(--color-primary-soft);
  border: 1px solid var(--color-border);
}

.download-item .btn {
  flex: 0 0 auto;
  height: 44px;
  padding: 0 20px;
  font-size: 15px;
}

/* ============================================================
   11. 附件上传（需求反馈）
   ============================================================ */
.form-group input[type="file"] {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px dashed var(--color-border-strong);
  background: var(--color-primary-soft);
  color: var(--color-text-light);
  font-size: 14px;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.form-group input[type="file"]:hover {
  border-color: var(--color-primary);
  background: rgba(43, 94, 233, 0.1);
}

.form-group input[type="file"]::file-selector-button {
  margin-right: 14px;
  padding: 9px 18px;
  border: 0;
  border-radius: 10px;
  background: linear-gradient(135deg, #2b5ee9, #3b82f6);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.form-group input[type="file"]::file-selector-button:hover {
  background: linear-gradient(135deg, #1d4ed8, #2b5ee9);
}

.captcha-row img {
  border-radius: 10px;
  border: 1px solid var(--color-border);
}

/* ============================================================
   12. 响应式微调
   ============================================================ */

/* ============================================================
   11b. 资质与专利：证书墙
   ============================================================ */
.cert-wall {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.cert-tile {
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.cert-tile:hover {
  transform: translateY(-6px);
  border-color: rgba(43, 94, 233, 0.35);
  box-shadow: var(--shadow-md);
}

html[data-theme="dark"] .cert-tile:hover {
  border-color: rgba(110, 168, 254, 0.45);
}

.cert-tile__media {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 4 / 3;
  padding: 18px;
  background: linear-gradient(140deg, rgba(43, 94, 233, 0.08), rgba(14, 165, 183, 0.06));
  border-bottom: 1px solid var(--color-border);
  overflow: hidden;
}

.cert-tile__media img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  border-radius: 10px;
  background: #fff;
  box-shadow: 0 10px 26px rgba(16, 35, 80, 0.14);
}

.cert-tile__pdf,
.cert-tile__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  border-radius: 18px;
  background: linear-gradient(140deg, rgba(43, 94, 233, 0.14), rgba(124, 58, 237, 0.12));
  border: 1px solid rgba(43, 94, 233, 0.2);
  color: var(--color-primary);
  font-family: Inter, "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.cert-tile__icon {
  font-family: inherit;
  font-size: 32px;
  letter-spacing: 0;
}

.cert-tile__type {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--color-border);
  color: #17233b;
  font-size: 12px;
  font-weight: 600;
  backdrop-filter: blur(6px);
}

.cert-tile__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px 24px 24px;
}

.cert-tile__body h3 {
  color: var(--color-text);
  font-size: 17px;
  line-height: 1.5;
}

.cert-tile__body p {
  margin-top: 8px;
  color: var(--color-text-light);
  font-size: 13.5px;
  line-height: 1.7;
}

.cert-tile__meta {
  margin-top: 16px;
  display: grid;
  gap: 8px;
}

.cert-tile__meta li {
  display: flex;
  gap: 8px;
  font-size: 12.5px;
  color: var(--color-text);
  line-height: 1.6;
}

.cert-tile__meta li span {
  flex: 0 0 62px;
  color: var(--color-text-light);
}

.cert-tile__more {
  margin-top: auto;
  padding-top: 18px;
  color: var(--color-primary);
  font-size: 14px;
  font-weight: 600;
}

.cert-card__thumb {
  padding: 0;
  overflow: hidden;
  background: #fff;
}

.cert-card__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

html[data-theme="dark"] .cert-tile__more {
  color: var(--color-accent);
}

@media (max-width: 1080px) {
  .cert-wall {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }
}

@media (max-width: 640px) {
  .cert-wall {
    grid-template-columns: minmax(0, 1fr);
  }
  .cert-tile__body {
    padding: 20px;
  }
}
@media (max-width: 992px) {
  .page-hero {
    padding: 64px 0 52px;
  }
  .section {
    padding: 64px 0;
  }
}

@media (max-width: 640px) {
  .page-hero {
    padding: 48px 0 42px;
  }
  .page-hero h1 {
    font-size: 26px;
  }
  .section {
    padding: 52px 0;
  }
}