/* ============================================================
   深圳市跨境电子商务协会 · dotconnect 设计系统
   Swiss engineering blueprint with a single ember
   ============================================================ */
:root {
  /* ===== Colors ===== */
  --color-bone-canvas: #fcfbf8;
  --color-charcoal-ink: #001011;
  --color-smoke-veil: #0f1e1f;
  --color-ash-layer: #ededea;
  --color-mist-border: #c1c4c2;
  --color-ember: #fd5321;
  --color-signal-blue: #007aff;

  /* ===== Typography ===== */
  --font-aeonikpro: 'Inter', 'Noto Sans SC', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  --text-caption: 16px;
  --leading-caption: 1.5;
  --tracking-caption: 0.16px;
  --text-body: 18px;
  --leading-body: 1.4;
  --tracking-body: 0.18px;
  --text-subheading: 24px;
  --leading-subheading: 1.4;
  --tracking-subheading: -0.29px;
  --text-heading-sm: 32px;
  --leading-heading-sm: 1.1;
  --tracking-heading-sm: -0.38px;
  --text-heading: 36px;
  --leading-heading: 1.1;
  --tracking-heading: -0.72px;
  --text-heading-lg: 72px;
  --leading-heading-lg: 0.9;
  --tracking-heading-lg: -1.8px;
  --text-display: 101px;
  --leading-display: 0.8;
  --tracking-display: -2.53px;

  --font-weight-regular: 400;
  --font-weight-medium: 500;

  /* ===== Spacing (base 8px) ===== */
  --spacing-8: 8px;
  --spacing-16: 16px;
  --spacing-24: 24px;
  --spacing-32: 32px;
  --spacing-48: 48px;
  --spacing-64: 64px;
  --spacing-72: 72px;
  --spacing-80: 80px;
  --spacing-96: 96px;
  --spacing-160: 160px;

  /* ===== Layout ===== */
  --page-max-width: 1200px;
  --section-gap: 96px;
  --card-padding: 24px;
  --element-gap: 24px;

  /* ===== Border Radius ===== */
  --radius-cards: 20px;
  --radius-links: 44px;
  --radius-pills: 48px;
  --radius-badges: 8px;
  --radius-images: 20px;
  --radius-buttons: 24px;

  /* ===== Surfaces ===== */
  --surface-bone-canvas: #fcfbf8;
  --surface-ash-layer: #ededea;
  --surface-smoke-veil: #0f1e1f;
  --surface-ember: #fd5321;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-aeonikpro);
  font-size: var(--text-body);
  font-weight: 400;
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  color: var(--color-charcoal-ink);
  background-color: var(--color-bone-canvas);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ===== Utilities ===== */
.page-container {
  max-width: var(--page-max-width);
  padding-left: var(--spacing-24);
  padding-right: var(--spacing-24);
  margin-left: auto;
  margin-right: auto;
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.block { display: block; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.flex-shrink-0 { flex-shrink: 0; }
.flex-1 { flex: 1; }
.relative { position: relative; }
.absolute { position: absolute; }
.inset-0 { top: 0; right: 0; bottom: 0; left: 0; }
.mx-auto { margin-left: auto; margin-right: auto; }
.text-center { text-align: center; }
.break-words { overflow-wrap: break-word; }
.overflow-hidden { overflow: hidden; }
.whitespace-nowrap { white-space: nowrap; }
.cursor-pointer { cursor: pointer; }
.justify-between { justify-content: space-between; }
.pointer-events-auto { pointer-events: auto; }
.mt-1 { margin-top: 4px; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mt-7 { margin-top: 28px; }
.mt-8 { margin-top: 32px; }
.mr-2 { margin-right: 8px; }
.mr-5 { margin-right: 20px; }
.px-6 { padding-left: 24px; padding-right: 24px; }
.py-4 { padding-top: 16px; padding-bottom: 16px; }
.rounded { border-radius: 8px; }
.rounded-md { border-radius: 6px; }
.rounded-xl { border-radius: 12px; }
.rounded-full { border-radius: 9999px; }
.z-10 { z-index: 10; }
.font-medium { font-weight: 500; }
.text-sm { font-size: 14px; line-height: 20px; }
.text-0 { font-size: 0; }
.text-uppercase { text-transform: uppercase; }
.menu-text-uppercase { text-transform: uppercase; }
.font-nav-size { font-size: 16px; }
.tracking-1 { letter-spacing: 0.01em; }

.body-text-xl { font-size: 20px; line-height: 30px; }
.color-body-default { color: var(--color-smoke-veil); }
.color-body-80 { color: var(--color-smoke-veil); opacity: 0.8; }
.color-header-text-70 { color: var(--color-charcoal-ink); opacity: 0.75; }
.color-footer-text-80 { color: var(--color-ash-layer); }

/* ===== Responsive hidden (no colon-classname pitfalls) ===== */
.lg-hidden { display: none !important; }
@media (max-width: 959.98px) {
  .md-hidden { display: none !important; }
  .lg-hidden { display: block !important; }
}

/* ============ HEADER ============ */
.header-container {
  background-color: var(--color-bone-canvas);
  border-bottom: 1px solid var(--color-mist-border);
}
.header-inner-container { min-height: 72px; }

.header__logo { font-size: 19px; line-height: 28px; font-weight: 500; }

.header-menu-container {
  margin: 0 40px;
  overflow: visible;
}
.header-menu { display: flex; align-items: center; justify-content: center; }

.header-menu-item { position: relative; }
.header-menu > .header-menu-item > .menu-item-label {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 24px 16px;
  font-family: var(--font-aeonikpro);
  font-size: 16px;
  font-weight: 400;
  color: var(--color-smoke-veil);
  transition: color 300ms cubic-bezier(0.455, 0.03, 0.515, 0.955);
  white-space: nowrap;
  cursor: pointer;
}
.header-menu-item:hover > .menu-item-label { color: var(--color-charcoal-ink); }
.menu-arrow { opacity: 0.4; }

.header-menu-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  max-width: 288px;
  border-radius: var(--radius-cards);
  border-top-left-radius: 0;
  border: 1px solid var(--color-mist-border);
  background-color: var(--color-bone-canvas);
  box-shadow: none;
  padding: 12px 0;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: opacity 200ms ease, transform 200ms ease;
  z-index: 100;
}
.header-menu-item:hover .header-menu-dropdown {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}
.header-submenu li a,
.header-submenu li > span {
  display: block;
  padding: 10px 24px;
  font-family: var(--font-aeonikpro);
  font-size: 15px;
  color: var(--color-smoke-veil);
  white-space: nowrap;
  transition: color 300ms ease;
}
.header-submenu li a:hover { color: var(--color-ember); }
.header-submenu li > span { color: var(--color-mist-border); cursor: default; }

.header__icons { gap: 8px; }
.header__icons-item { margin-left: 20px; color: var(--color-charcoal-ink); }
.header__account { margin: 0 16px -4px 0; padding-bottom: 4px; position: relative; }
.header__account-icon {
  padding: 8px;
  transition: background-color 300ms ease;
  color: var(--color-charcoal-ink);
}
.header__account:hover .header__account-icon { background-color: var(--color-ash-layer); }
.header__account-dropdown {
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 8px 0;
  border: 1px solid var(--color-mist-border);
  background-color: var(--color-bone-canvas);
  border-radius: var(--radius-cards);
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}
.header__account:hover .header__account-dropdown { opacity: 1; pointer-events: auto; }
.header__account-dropdown-item {
  display: block;
  padding: 12px 20px;
  font-family: var(--font-aeonikpro);
  font-size: 15px;
  color: var(--color-smoke-veil);
  transition: color 300ms ease;
}
.header__account-dropdown-item:hover { color: var(--color-ember); }

.header-mobile-toggle {
  display: none;
  border: none;
  background: none;
  padding: 10px;
  color: var(--color-charcoal-ink);
  cursor: pointer;
}

/* mobile menu */
.header-menu-mobile {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 320px;
  max-width: 85vw;
  z-index: 1060;
  overflow-y: auto;
  background-color: var(--color-bone-canvas);
  border-right: 1px solid var(--color-mist-border);
  transform: translateX(-105%);
  transition: transform 300ms cubic-bezier(0.455, 0.03, 0.515, 0.955);
}
.header-menu-mobile.open { transform: translateX(0); }
.mobile-menu-mask {
  position: fixed;
  inset: 0;
  background: rgba(0, 16, 17, 0.5);
  z-index: 1050;
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms ease;
}
.mobile-menu-mask.open { opacity: 1; pointer-events: auto; }
.mobile-menu-header { border-bottom: 1px solid var(--color-mist-border); }
.mobile-menu-header button {
  border: none; background: none;
  font-size: 20px; cursor: pointer; color: var(--color-charcoal-ink);
}
.mobile-menu-list > li {
  border-bottom: 1px solid var(--color-mist-border);
}
.mobile-menu-list > li > a,
.mobile-menu-list > li > span {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  font-size: 16px;
  color: var(--color-charcoal-ink);
  cursor: pointer;
}
.mobile-menu-list > li > span i { font-style: normal; font-size: 12px; transition: transform 200ms; }
.mobile-menu-list > li.open > span i { transform: rotate(180deg); }
.mobile-menu-list ul { display: none; background: var(--color-ash-layer); }
.mobile-menu-list li.open > ul { display: block; }
.mobile-menu-list ul a, .mobile-menu-list ul span {
  display: block;
  padding: 11px 32px;
  font-size: 15px;
  color: var(--color-smoke-veil);
}
.mobile-menu-list ul span { color: var(--color-mist-border); }

/* ============ HERO ============ */
.hero-section {
  padding: var(--spacing-96) 0 var(--spacing-80);
  text-align: center;
}
.hero-eyebrow {
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.16px;
  color: var(--color-ember);
  margin-bottom: var(--spacing-24);
}
.hero-title {
  font-size: 64px;
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -1.6px;
  color: var(--color-charcoal-ink);
  margin-bottom: var(--spacing-32);
}
.hero-sub {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-smoke-veil);
  max-width: 60ch;
  margin: 0 auto var(--spacing-48);
}
.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-16);
}

/* ===== Arrow Pill Button (dark fill, circular icon) ===== */
.arrow-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 6px 24px 6px 6px;
  border-radius: 44px;
  background-color: var(--color-charcoal-ink);
  color: var(--color-bone-canvas);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.16px;
  transition: background-color 300ms ease;
}
.arrow-pill-btn:hover { background-color: var(--color-smoke-veil); }
.arrow-pill-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--color-bone-canvas);
  color: var(--color-charcoal-ink);
  font-size: 16px;
}
.arrow-pill-label { padding-right: 4px; }

/* ===== Ember CTA (one per viewport) ===== */
.ember-btn {
  display: inline-flex;
  align-items: center;
  padding: 12px 32px;
  border-radius: var(--radius-buttons);
  background-color: var(--color-ember);
  color: var(--color-bone-canvas);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.16px;
  transition: opacity 300ms ease;
}
.ember-btn:hover { opacity: 0.85; }

/* ============ SLIDESHOW ============ */
.slideshow-container { max-width: var(--page-max-width); position: relative; padding: 0 24px; }
.slideshow-carousel { position: relative; height: 480px; overflow: hidden; border-radius: var(--radius-images); border: 1px solid var(--color-mist-border); }
.slideshow-carousel-track {
  display: flex;
  height: 100%;
  transition: transform 600ms cubic-bezier(0.23, 1, 0.32, 1);
}
.slideshow-carousel-item { flex: 0 0 100%; height: 100%; position: relative; }
.slideshow-carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.slideshow-carousel-item-content { padding: 30px; pointer-events: none; }
.slideshow-carousel-item-content[data-layout="bottom"] { align-items: flex-end; justify-content: center; }
.slideshow-carousel-item-inner-content { pointer-events: auto; align-items: flex-start; }
.slideshow-carousel-item-btn {
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 500;
  line-height: 24px;
  margin-top: 24px;
  border-radius: var(--radius-buttons);
}
.slideshow-carousel-item-btn svg { margin-left: 4px; }

.spz-carousel-button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-mist-border);
  background: var(--color-bone-canvas);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 5;
  color: var(--color-charcoal-ink);
  transition: background-color 300ms ease;
}
.spz-carousel-button:hover { background-color: var(--color-ash-layer); }
.spz-carousel-button-prev { left: 16px; }
.spz-carousel-button-next { right: 16px; }
.spz-carousel-button-prev svg { transform: rotate(180deg); }

.slideshow-bar-container {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  z-index: 5;
}
.slideshow-bar-item {
  position: relative;
  width: 40px;
  height: 3px;
  margin: 0 4px;
  border-radius: 2px;
  background-color: rgba(252, 251, 248, 0.4);
  cursor: pointer;
  transition: background-color 300ms ease;
}
.slideshow-bar-item[data-active="true"] { background-color: var(--color-bone-canvas); }

/* single-image slideshows keep natural aspect */
.slideshow-single .slideshow-carousel-item img { position: static; }
.slideshow-single .slideshow-carousel-item { height: auto; }
.slideshow-single .slideshow-carousel-item img { height: auto; }

/* ============ SECTION HEADER (numbered) ============ */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--color-mist-border);
  padding-bottom: var(--spacing-24);
  margin-bottom: var(--spacing-48);
}
.section-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.section-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-charcoal-ink);
  color: var(--color-bone-canvas);
  font-size: 14px;
}
.section-name {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.16px;
  color: var(--color-charcoal-ink);
}
.section-number {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-charcoal-ink);
}

/* ============ OFFER CARDS ============ */
.offer-section {
  padding: var(--spacing-96) 0;
}
.offer-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-24);
}
.offer-card {
  background: var(--color-bone-canvas);
  border: 1px solid var(--color-mist-border);
  border-radius: var(--radius-cards);
  padding: 32px;
  transition: border-color 300ms ease;
}
.offer-card:hover { border-color: var(--color-charcoal-ink); }
.offer-card-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 24px;
  font-weight: 500;
  letter-spacing: -0.29px;
  color: var(--color-charcoal-ink);
  margin-bottom: var(--spacing-16);
}
.offer-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-charcoal-ink);
  color: var(--color-bone-canvas);
  font-size: 14px;
  flex-shrink: 0;
}
.offer-card-body {
  font-size: var(--text-body);
  line-height: var(--leading-body);
  color: var(--color-smoke-veil);
}

/* ============ EVENT CARDS ============ */
.event-section {
  padding: var(--spacing-96) 0;
}
.event-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--spacing-24);
}
.event-card {
  border: 1px solid var(--color-mist-border);
  border-radius: var(--radius-cards);
  overflow: hidden;
  background: var(--color-bone-canvas);
  transition: border-color 300ms ease;
}
.event-card:hover { border-color: var(--color-charcoal-ink); }
.event-card-img { aspect-ratio: 16/7; overflow: hidden; border-radius: var(--radius-cards) var(--radius-cards) 0 0; }
.event-card-img img { width: 100%; height: 100%; object-fit: cover; }
.event-card-body { padding: var(--spacing-24); }
.event-card-name {
  font-size: 18px;
  font-weight: 500;
  color: var(--color-charcoal-ink);
  margin-bottom: 8px;
}
.event-card-desc {
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-smoke-veil);
}

/* ============ BLOG ============ */
.blog-section {
  padding: var(--spacing-96) 0;
}
.blog-post-content {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--spacing-24);
}
.blog-post-item {
  position: relative;
  border: 1px solid var(--color-mist-border);
  border-radius: var(--radius-cards);
  overflow: hidden;
  background: var(--color-bone-canvas);
  transition: border-color 300ms ease;
}
.blog-post-item:hover { border-color: var(--color-charcoal-ink); }
.blog-post-hero { position: relative; aspect-ratio: 4/3; overflow: hidden; border-radius: var(--radius-cards) var(--radius-cards) 0 0; }
.blog-post-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 650ms cubic-bezier(0.23, 1, 0.32, 1);
}
.blog-post-item:hover .blog-post-img { transform: scale(1.02); }
.blog-post-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 4px 12px;
  border-radius: var(--radius-badges);
  border: 1px solid var(--color-mist-border);
  background: var(--color-bone-canvas);
  color: var(--color-charcoal-ink);
  font-size: 14px;
  font-weight: 500;
}
.blog-post-info { padding: var(--spacing-24); }
.blog-post-meta {
  font-size: 16px;
  color: var(--color-mist-border);
  margin-bottom: var(--spacing-16);
}
.blog-post-meta span:first-child { color: var(--color-charcoal-ink); }
.meta-dot { margin: 0 8px; }
.blog-post-info-heading {
  font-size: 24px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.29px;
  color: var(--color-charcoal-ink);
  margin-bottom: var(--spacing-16);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
  overflow: hidden;
}
.blog-post-desc {
  font-size: 16px;
  line-height: 1.5;
  color: var(--color-smoke-veil);
  display: -webkit-box;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 3;
  overflow: hidden;
}

/* ============ FOOTER ============ */
.footer {
  background-color: var(--color-charcoal-ink);
  color: var(--color-bone-canvas);
  margin-top: var(--spacing-96);
}
.footer-menu-container { padding-top: var(--spacing-64); }
.footer-menu-item { padding: var(--spacing-32) var(--spacing-24) 0; }
.footer .body-text-xl { color: var(--color-bone-canvas); }
.footer-additional-container { padding: var(--spacing-48) 0 var(--spacing-32); }
.footer-copyright-text {
  color: var(--color-ash-layer);
  font-size: 16px;
}

/* ============ RESPONSIVE ============ */
@media (max-width: 1279.98px) {
  .header-menu > .header-menu-item > .menu-item-label { padding: 24px 10px; }
}

@media (max-width: 959.98px) {
  .header-inner-container { min-height: 64px; }
  .header-menu-container { display: none; }
  .header-mobile-toggle { display: block; }

  .hero-section { padding: 64px 0 48px; }
  .hero-title { font-size: 44px; letter-spacing: -1.1px; }
  .hero-sub { font-size: 16px; }

  .slideshow-carousel { height: auto; border-radius: 12px; }
  .slideshow-carousel-item { height: auto; }
  .slideshow-carousel-img { position: static; height: auto; }
  .slideshow-carousel-item-content { padding: 16px; }
  .slideshow-carousel-item-btn { padding: 10px 16px; font-size: 14px; margin-top: 16px; }
  .slideshow-bar-container { bottom: 16px; }
  .slideshow-bar-item { width: 20px; }
  .spz-carousel-button { width: 32px; height: 32px; }
  .spz-carousel-button-prev { left: 12px; }
  .spz-carousel-button-next { right: 12px; }

  .offer-section, .event-section, .blog-section { padding: 48px 0; }
  .offer-grid, .event-grid { grid-template-columns: 1fr; }
  .blog-post-content { grid-template-columns: 1fr; gap: 16px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .arrow-pill-btn, .ember-btn { justify-content: center; }
}