/* ============================================
   ZOLON Blog — Main Stylesheet
   Figma Source: hp9bKlUFq7V0a5pnPb8PMi
   ============================================ */

@import url('./tokens.css');
/* Google Fonts loaded via <link> in HTML to avoid render-blocking @import */

/* ── Reset & Base ── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-white);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

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

ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ── Container ── */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ── Section ── */
.section {
  padding: var(--space-5xl) 0;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid rgba(229, 233, 239, 0.6);
  transition: box-shadow var(--transition-base);
}

.navbar.scrolled {
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.navbar__inner {
  display: flex;
  align-items: center;
  height: 77px;
  gap: 0;
}

.navbar__logo {
  flex-shrink: 0;
  margin-right: auto;
}

.navbar__logo img {
  height: 25px;
  width: auto;
  object-fit: contain;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-right: 40px;
}

.navbar__link {
  font-size: var(--text-sm);
  font-weight: var(--font-normal);
  color: var(--color-text-primary);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-gradient-brand);
  border-radius: 1px;
  transition: width 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.navbar__link:hover { color: var(--color-primary); }
.navbar__link:hover::after { width: 100%; }
.navbar__link--active { color: var(--color-primary); font-weight: var(--font-semibold); }
.navbar__link--active::after { width: 100%; }

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-left: auto;
}

.navbar__search {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border: 1px solid var(--color-border-input);
  border-radius: var(--radius-full);
  background: var(--color-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.navbar__search:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.navbar__search-icon { color: var(--color-text-placeholder); flex-shrink: 0; }

.navbar__search input {
  border: none;
  outline: none;
  font-family: var(--font-family);
  font-size: var(--text-sm);
  color: var(--color-text-primary);
  background: transparent;
  width: 126px;
}

.navbar__search input::placeholder { color: var(--color-text-placeholder); }

.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}

.navbar__toggle span {
  display: block;
  width: 26px;
  height: 3px;
  background: var(--color-text-primary);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.navbar__toggle--active span:nth-child(1) {
  transform: translateY(9px) rotate(45deg);
}
.navbar__toggle--active span:nth-child(2) {
  opacity: 0;
}
.navbar__toggle--active span:nth-child(3) {
  transform: translateY(-9px) rotate(-45deg);
}

/* ── Mobile menu (hidden on desktop) ── */
.navbar__mobile-menu { display: none; }
.navbar__mobile-overlay { display: none; }

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  background-color: var(--color-bg-light);
  padding: 0 0 80px 0;
  overflow: hidden;
}

.hero .container { position: relative; z-index: 1; }

.hero__badge {
  display: inline-block;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  letter-spacing: 1px;
  padding: 64px 0 48px;
}

/* ── Hero Slider ── */
.hero__slider {
  position: relative;
  overflow: hidden;
  border-radius: 0;
  cursor: grab;
  user-select: none;
}

.hero__slider:active { cursor: grabbing; }

.hero__slides {
  display: flex;
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
  will-change: transform;
}

.hero__slide {
  flex: 0 0 100%;
  min-width: 0;
}

.hero__content {
  display: flex;
  align-items: center;
  gap: 40px;
}

.hero__text {
  flex: 1;
  max-width: 502px;
}

.hero__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-hero);
  color: var(--color-text-primary);
  margin-bottom: 28px;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  padding: 14px 0;
  transition: gap var(--transition-base);
}

.hero__cta:hover { gap: 14px; }

.hero__image {
  flex-shrink: 0;
  width: 540px;
  height: 368px;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.hero__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.hero__image:hover img { transform: scale(1.03); }

/* Divider group */
.hero__divider-group {
  margin-top: 56px;
}

.hero__divider {
  border: none;
  border-top: 1px solid var(--color-border-default);
}

.hero__gradient-track {
  width: 100%;
  height: 6px;
  background: #E8EDF2;
  border-radius: 3px;
  overflow: hidden;
}

.hero__gradient-bar {
  width: 25%;
  height: 100%;
  background: var(--color-gradient-brand);
  border-radius: 3px;
  transition: transform 0.5s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Bottom section: categories + contact */
.hero__bottom {
  display: flex;
  gap: 40px;
  padding-top: 48px;
  align-items: stretch;
}

.hero__categories {
  display: grid;
  grid-template-columns: repeat(3, 195px);
  gap: 28px;
  flex-shrink: 0;
  width: fit-content;
}

.category-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform var(--transition-base);
}

.category-card:hover { transform: translateY(-4px); }

.category-card__icon {
  width: 46px;
  height: 46px;
  border-radius: var(--radius-sm);
  background: var(--color-white);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
}

.category-card__title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-top: 6px;
}

.category-card__desc {
  font-size: var(--text-xs);
  font-weight: var(--font-regular);
  line-height: var(--leading-normal);
  color: var(--color-text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.category-card__link {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
  transition: gap var(--transition-base);
}

.category-card__link:hover { gap: 10px; }

/* Contact sidebar */
.contact-card {
  flex: 1;
  min-width: 220px;
  max-width: 280px;
  background: var(--color-white);
  border-radius: var(--radius-sm);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  border: 2px solid var(--color-border-default);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.contact-card__label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.contact-card__email {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  display: block;
  margin-bottom: 0;
  transition: opacity var(--transition-fast);
  word-break: break-all;
}

.contact-card__email:hover { opacity: 0.85; }

.contact-card__social { margin-top: auto; padding-top: 24px; }

.contact-card__follow {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.contact-card__icons {
  display: flex;
  gap: 12px;
}

.contact-card__icons a {
  opacity: 1;
  transition: opacity var(--transition-fast);
}

.contact-card__icons a:hover { opacity: 0.7; }

/* ============================================
   Insights Section
   ============================================ */
.insights {
  position: relative;
}

.insights .container { position: relative; z-index: 1; }

.insights__header { margin-bottom: 48px; }

.insights__label {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 12px;
}

.insights__title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  line-height: var(--leading-hero);
}

.insights__list {
  display: flex;
  flex-direction: column;
}

.article-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 20px 0;
  transition: padding-left var(--transition-fast);
}

.article-item:hover {
  padding-left: 4px;
}

.article-item__date-col {
  flex-shrink: 0;
  min-width: 108px;
}

.article-item__date {
  font-size: var(--text-xs);
  font-weight: var(--font-regular);
  color: var(--color-text-tertiary);
  white-space: nowrap;
}

.article-item__separator {
  width: 2px;
  align-self: stretch;
  background: var(--color-primary);
  border-radius: 1px;
  flex-shrink: 0;
  opacity: 0.3;
  margin-left: 80px;
}

.article-item__body {
  flex: 1;
  min-width: 0;
}

.article-item__tag {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  white-space: nowrap;
  margin-bottom: 6px;
}

.article-item__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 30px;
  color: var(--color-text-primary);
  margin-top: 10px;
  transition: color var(--transition-fast);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-item:hover .article-item__title {
  color: var(--color-primary);
}

.article-item__thumb {
  width: 238px;
  height: 119px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.article-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.article-item:hover .article-item__thumb img {
  transform: scale(1.05);
}

/* ============================================
   Insights Page
   ============================================ */
.insights-page {
  padding: 48px 0 80px;
}

.insights-page__title {
  font-size: 40px;
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: 12px;
}

.insights-page__desc {
  font-size: 16px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 680px;
  margin-bottom: 28px;
}

/* Filter Tabs */
.insights-page__tabs {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.insights-page__tab {
  font-family: var(--font-family);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  line-height: 1;
  padding: 8px 20px;
  border-radius: 50px;
  border: none;
  background: var(--color-white);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.insights-page__tab--active {
  background: var(--color-primary);
  color: var(--color-white);
}

.insights-page__tab:hover:not(.insights-page__tab--active) {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Article List */
.insights-page__list {
  margin-bottom: 48px;
}

.insights-page__more {
  text-align: center;
}

.insights-page__more-link {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.insights-page__more-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* ============================================
   Article Detail Page
   ============================================ */
.article-detail {
  padding: 48px 0 80px;
}

.article-detail__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.article-detail__header {
  margin-bottom: 32px;
}

.article-detail__title {
  font-size: 44px;
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.article-detail__date {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.article-detail__body {
  font-size: var(--text-base);
  line-height: 1.8;
  color: var(--color-text-primary);
}

.article-detail__body p {
  margin-bottom: 20px;
}

.article-detail__figure {
  margin: 24px 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.article-detail__figure img {
  width: 100%;
  height: auto;
  display: block;
}

/* 文章正文内嵌图片 */
.article-content__image {
  margin: 28px 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-secondary, #f5f5f5);
}

.article-content__image img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.article-content__image figcaption {
  padding: 10px 16px;
  font-size: 13px;
  color: var(--color-text-secondary, #666);
  line-height: 1.5;
  font-style: italic;
}

.article-detail__body h2 {
  font-size: 22px;
  font-weight: var(--font-bold, 700);
  margin: 36px 0 16px;
  color: var(--color-text-primary, #1a1a1a);
}

/* ── Article Share Button ── */
.article-share {
  margin-bottom: 32px;
}

/* ── Article Summary (GEO Optimization) ── */
.article-summary {
  background: linear-gradient(135deg, #f0f7ff 0%, #e8f4f8 100%);
  border-left: 4px solid #0A67C1;
  border-radius: 0 8px 8px 0;
  padding: 20px 24px;
  margin-bottom: 32px;
}

.article-summary__label {
  font-size: 12px;
  font-weight: 700;
  color: #0A67C1;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.article-summary__text {
  font-size: 15px;
  line-height: 1.7;
  color: #1a1a1a;
  margin: 0;
}

.article-share__btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  background-color: #0077B5;
  color: white;
  border: none;
  border-radius: 6px;
  font-family: Inter, sans-serif;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.article-share__btn:hover {
  background-color: #005f8d;
  transform: translateY(-1px);
}

.article-share__btn:active {
  transform: translateY(0);
}

.article-share__btn svg {
  flex-shrink: 0;
}

/* ============================================
   Case Studies List Item
   ============================================ */
.case-list-item {
  display: flex;
  align-items: flex-start;
  gap: 24px;
  padding: 24px 0;
  text-decoration: none;
  color: inherit;
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition-fast);
}

.case-list-item:first-child {
  border-top: 1px solid var(--color-border-light);
}

.case-list-item:hover .case-list-item__title {
  color: var(--color-primary);
}

.case-list-item__thumb {
  width: 240px;
  height: 135px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

.case-list-item__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.case-list-item:hover .case-list-item__thumb img {
  transform: scale(1.05);
}

.case-list-item__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.case-list-item__tag {
  display: inline-block;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-primary);
  margin-bottom: 8px;
}

.case-list-item__title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 30px;
  color: var(--color-text-primary);
  margin-bottom: 8px;
  transition: color var(--transition-fast);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.case-list-item__excerpt {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   Case Studies Section
   ============================================ */
.case-studies {
  position: relative;
  background-color: var(--color-bg-light);
}

.case-studies .container { position: relative; z-index: 1; }

.case-studies__label {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 12px;
  margin-bottom: 48px;
}

.case-studies__title {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  line-height: var(--leading-hero);
}

.case-studies__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.case-card {
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  aspect-ratio: 503 / 343;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  display: block;
}

.case-card__image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.case-card:hover .case-card__image { transform: scale(1.05); }

.case-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(126, 126, 126, 0.25) 33%, rgba(0, 0, 0, 0.88) 100%);
  transition: background var(--transition-base);
}

.case-card:hover .case-card__overlay {
  background: linear-gradient(180deg, rgba(126, 126, 126, 0.15) 33%, rgba(0, 0, 0, 0.92) 100%);
}

.case-card__title {
  position: absolute;
  bottom: 27px;
  left: 27px;
  right: 27px;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  line-height: var(--leading-loose);
  color: var(--color-white);
  z-index: 1;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   Tech & UX Section (Dark)
   ============================================ */
.tech-ux {
  position: relative;
  background-color: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: 120px 0;
  overflow: hidden;
}

.tech-ux .container { position: relative; z-index: 1; }

.tech-ux__header {
  margin-bottom: 48px;
}

.tech-ux__label {
  display: block;
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-white);
  line-height: var(--leading-hero);
  margin: 0;
}

.tech-ux__subtitle {
  display: block;
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 8px;
}

.tech-ux__content {
  display: flex;
  align-items: flex-start;
  gap: 40px;
}

.tech-ux__image {
  flex-shrink: 0;
  width: 535px;
  height: 368px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.tech-ux__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.tech-ux__image:hover img { transform: scale(1.03); }

.tech-ux__text {
  flex: 1;
  padding-top: 80px;
}

.tech-ux__article-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  line-height: var(--leading-hero);
  color: var(--color-white);
  margin-bottom: 28px;
}

.tech-ux__read-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-white);
  transition: gap var(--transition-base), opacity var(--transition-fast);
}

.tech-ux__read-more:hover {
  gap: 14px;
  opacity: 0.85;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background-color: var(--color-white);
  padding: 80px 0 48px;
  border-top: 1px solid var(--color-border-light);
}

.footer__grid {
  display: grid;
  grid-template-columns: 280px 1fr 1fr 1fr;
  gap: 64px;
  margin-bottom: 48px;
}

.footer__brand-logo { margin-bottom: 20px; }

.footer__brand-logo img { height: 25px; width: auto; object-fit: contain; }

.footer__brand-desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-muted);
}

.footer__col-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  margin-bottom: 16px;
}

.footer__col-links {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer__col-link {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-text-footer-link);
  transition: color var(--transition-fast);
  padding: 2px 0;
}

.footer__col-link:hover { color: var(--color-primary); }

.footer__bottom {
  padding-top: 32px;
  border-top: 1px solid var(--color-border-light);
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-placeholder);
}

/* ============================================
   Scroll Reveal Animations
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================
   Responsive — Tablet
   ============================================ */
@media (max-width: 1100px) {
  :root { --container-padding: 40px; }

  .navbar__inner { height: 64px; }
  .navbar__links { gap: 24px; margin-right: 24px; }

  .hero { padding: 0 0 64px 0; }
  .hero__badge { padding: 48px 0 32px; }
  .hero__content { flex-direction: column; gap: 28px; }
  .hero__image { width: 100%; max-width: 540px; height: auto; aspect-ratio: 540/368; }
  .hero__divider-group { margin-top: 40px; }

  .hero__bottom { flex-direction: column; gap: 32px; }
  .hero__categories { grid-template-columns: repeat(3, 1fr); gap: 24px; }
  .contact-card { max-width: 100%; }

  .article-item__meta { min-width: 200px; }
  .article-item__thumb { width: 180px; }
  .article-item__separator { margin-left: 60px; }

  .tech-ux__content { flex-direction: column; }
  .tech-ux__image { width: 100%; }
  .tech-ux__text { padding-top: 0; }

  .footer__grid { grid-template-columns: repeat(2, 1fr); gap: 40px; }
}

/* ============================================
   Responsive — Mobile
   ============================================ */
@media (max-width: 768px) {
  :root { --container-padding: 20px; }

  /* ── Global section spacing ── */
  .section { padding: 48px 0; }

  /* ── Navbar ── */
  .navbar__inner { height: 56px; }
  .navbar__links { display: none; }
  .navbar__search { display: none; }
  .navbar__toggle { display: flex; padding: 12px; gap: 6px; }
  .navbar__toggle span { width: 26px; height: 3px; }

  /* ── Mobile full-screen menu (white bg, Figma h5导航) ── */
  .navbar__mobile-menu {
    display: none !important;
    position: fixed !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    background: #fff !important;
    z-index: 2147483647 !important;
    flex-direction: column;
    padding: 24px;
    animation: navSlideIn 0.3s ease;
  }
  .navbar__mobile-menu--open {
    display: flex !important;
  }
  .navbar__mobile-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 48px;
    padding-top: 16px;
  }
  .navbar__mobile-header img { filter: none; }
  .navbar__close {
    background: none;
    border: none;
    color: #000;
    padding: 8px;
    cursor: pointer;
  }
  .navbar__mobile-links {
    list-style: none;
    padding: 0;
    margin: 0;
    flex: 1;
  }
  .navbar__mobile-link {
    display: block;
    font-family: Inter, sans-serif;
    font-size: 30px;
    font-weight: 400;
    color: #000;
    padding: 16px 0;
    text-decoration: none;
    transition: color 0.2s ease;
  }
  .navbar__mobile-link--active,
  .navbar__mobile-link--active:hover {
    color: #0A67C1;
    font-weight: 600;
  }
  .navbar__mobile-link:hover {
    color: #0A67C1;
  }
  .navbar__mobile-divider {
    width: 100%;
    height: 6px;
    background: linear-gradient(90deg, #0A67C1 0%, #009947 100%);
    margin: 24px 0;
    border-radius: 3px;
  }
  .navbar__mobile-footer {
    color: rgba(0, 0, 0, 0.5);
    font-size: 14px;
    padding-bottom: 16px;
  }

  @keyframes navSlideIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* ── Hero ── */
  .hero { padding: 0 0 48px 0; }
  .hero__badge { padding: 28px 0 20px; font-size: 13px; }
  .hero__content { flex-direction: column; gap: 20px; }
  .hero__text { max-width: 100%; }
  .hero__title { font-size: 24px; line-height: 32px; margin-bottom: 20px; }
  .hero__cta { padding: 10px 0; }
  .hero__image { width: 100%; height: auto; aspect-ratio: 4/3; }
  .hero__divider-group { margin-top: 28px; }
  .hero__gradient-track { height: 5px; }
  .hero__bottom { flex-direction: column; padding-top: 32px; gap: 28px; }
  .hero__categories { grid-template-columns: 1fr; gap: 20px; }

  /* Category cards */
  .category-card__icon { width: 44px; height: 44px; }
  .category-card__title { font-size: 15px; margin-top: 8px; }
  .category-card__desc { -webkit-line-clamp: 3; font-size: 15px; }

  /* Contact card */
  .contact-card { max-width: 100%; width: 100%; margin-left: 0; padding: 24px 20px; }
  .contact-card__social { margin-top: 24px; }
  /* ── Insights ── */
  .insights { padding: 48px 0; }
  .insights__header { margin-bottom: 28px; }
  .insights__title { font-size: 24px; line-height: 32px; }

  .article-item {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 0;
    gap: 10px;
  }
  .article-item__separator { display: none; }
  .article-item__date-col { min-width: auto; }
  .article-item__body { padding: 0; }
  .article-item__thumb { width: 100%; height: 180px; }
  .article-item__title { font-size: 16px; line-height: 24px; margin-top: 6px; }

  /* ── Case Studies ── */
  .case-studies { padding: 48px 0; }
  .case-studies__label { margin-top: 12px; margin-bottom: 28px; }
  .case-studies__title { font-size: 24px; line-height: 32px; }
  .case-studies__grid { grid-template-columns: 1fr; gap: 20px; }
  .case-card__title { bottom: 20px; left: 20px; right: 20px; font-size: 18px; line-height: 26px; }

  /* ── Tech & UX ── */
  .tech-ux { padding: 60px 0; }
  .tech-ux__header { margin-bottom: 32px; }
  .tech-ux__label { font-size: 24px; line-height: 32px; }
  .tech-ux__article-title { font-size: 24px; line-height: 32px; margin-bottom: 20px; }
  .tech-ux__image { width: 100%; height: auto; aspect-ratio: 535/368; }
  .tech-ux__text { padding-top: 0; }

  /* ── Insights Page ── */
  .insights-page { padding: 32px 0 48px; }
  .insights-page__title { font-size: 28px; margin-bottom: 24px; }
  .insights-page__tabs { gap: 8px; margin-bottom: 32px; }
  .insights-page__tab { font-size: 13px; padding: 6px 14px; }
  .insights-page__list { margin-bottom: 32px; }

  /* ── Case List Item (mobile) ── */
  .case-list-item { flex-direction: column; gap: 12px; padding: 18px 0; }
  .case-list-item__thumb { width: 100%; height: 180px; }
  .case-list-item__title { font-size: 16px; line-height: 24px; }
  .case-list-item__excerpt { -webkit-line-clamp: 3; }

  /* ── Article Detail ── */
  .article-detail {
    padding: 24px 16px 32px;
  }
  .article-detail__inner {
    max-width: 100%;
  }
  .article-detail__title { font-size: 28px; line-height: 1.25; }
  .article-detail__header { margin-bottom: 24px; }
  .article-detail__body { font-size: var(--text-sm); line-height: 1.75; }
  .article-detail__body p { margin-bottom: 16px; }
  .article-detail__figure { margin-top: 24px; }

  /* ── Footer ── */
  .footer { padding: 48px 0 32px; }
  .footer__grid { grid-template-columns: 1fr; gap: 28px; }
  .footer__bottom { padding-top: 24px; }
}

/* ── Breadcrumb ── */
.breadcrumb {
  padding: 16px 0 0;
}
.breadcrumb__list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 13px;
  color: #94A3B8;
}
.breadcrumb__item + .breadcrumb__item::before {
  content: '/';
  margin: 0 8px;
  color: #CBD5E1;
}
.breadcrumb__link {
  color: #94A3B8;
  text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb__link:hover {
  color: #0A67C1;
}
.breadcrumb__current {
  color: #64748B;
  font-weight: 600;
}

/* 首页面包屑只有一个"Home"时自动隐藏 */
.breadcrumb:has(.breadcrumb__list > li:only-child) {
  display: none;
}