:root {
  --bg-color: #0B0E14;
  --cbn-feed-bg: #0b0e14;
  --cbn-feed-panel: rgba(255, 255, 255, 0.035);
  --cbn-feed-border: rgba(255, 255, 255, 0.09);
  --cbn-accent-a: #60a5fa;
  --cbn-accent-b: #c084fc;
  --cbn-accent-c: #f472b6;
  --cbn-accent-gradient: linear-gradient(90deg, #60a5fa 0%, #c084fc 50%, #f472b6 100%);
}

html {
  scrollbar-gutter: stable;
}

.cbn-feed-main {
  position: relative;
  min-height: 100vh;
  background: var(--cbn-feed-bg);
}

body > .bottomSidebar {
  position: relative;
  z-index: 30;
  color: #94a3b8;
  -webkit-text-fill-color: #94a3b8;
}

body > .bottomSidebar h1,
body > .bottomSidebar .item,
body > .bottomSidebar .top-item,
body > .bottomSidebar .info p,
body > .bottomSidebar .copyright {
  color: #94a3b8;
  -webkit-text-fill-color: #94a3b8;
}

body > .bottomSidebar .util-list .item:hover {
  color: #fff;
  -webkit-text-fill-color: #fff;
}

body > .bottomSidebar .bottomSidebar-flex .util-list,
body > .bottomSidebar .bottomSidebar-flex .info {
  margin-left: 20px;
}

body > .bottomSidebar .bottomSidebar-flex .info .qrcode .qrcode-item img {
  width: 90px;
  height: 90px;
}

.cbn-edge-fade {
  display: none;
}

.cbn-edge-fade-bottom {
  bottom: 0;
  height: min(160px, 20vh);
  background: linear-gradient(
    to top,
    rgba(11, 14, 20, 0.92) 0%,
    rgba(11, 14, 20, 0.45) 55%,
    rgba(11, 14, 20, 0) 100%
  );
}

.cbn-feed-section {
  padding: 120px 24px 112px;
}

.cbn-feed-container {
  width: min(1580px, 100%);
  margin: 0 auto;
}

.cbn-feed-toolbar {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px 40px;
  margin-top: 8px;
  margin-bottom: 36px;
  padding: 0;
  border: 0;
  background: transparent;
}

.cbn-feed-spotlight {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(280px, 1fr);
  gap: 28px 36px;
  margin-bottom: 56px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  align-items: start;
}

.cbn-feed-carousel {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: clamp(200px, 22vw, 360px);
  align-self: start;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--cbn-feed-border);
}

.cbn-feed-carousel-track {
  position: absolute;
  inset: 0;
}

.cbn-feed-carousel-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.55s ease, visibility 0.55s ease;
}

.cbn-feed-carousel-slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 1;
  pointer-events: auto;
}

.cbn-feed-carousel-slide a {
  display: block;
  position: absolute;
  inset: 0;
  cursor: pointer;
  z-index: 1;
}

.cbn-feed-carousel-slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  pointer-events: none;
}

.cbn-feed-carousel-caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
  padding: 56px 48px 42px;
  background: linear-gradient(
    to top,
    rgba(11, 14, 20, 0.88) 0%,
    rgba(11, 14, 20, 0.45) 55%,
    rgba(11, 14, 20, 0) 100%
  );
  pointer-events: none;
}

.cbn-feed-carousel-title {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  color: #fff;
  font-size: clamp(16px, 1.5vw, 22px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: 0.01em;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.35);
}

.cbn-feed-carousel-dots {
  position: absolute;
  left: 50%;
  bottom: 14px;
  z-index: 2;
  display: flex;
  gap: 8px;
  transform: translateX(-50%);
}

.cbn-feed-carousel-dot {
  width: 8px;
  height: 8px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.45);
  cursor: pointer;
  transition: background 0.2s ease, transform 0.2s ease;
}

.cbn-feed-carousel-dot.is-active {
  background: #fff;
  transform: scale(1.15);
}

.cbn-feed-carousel-dot:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.cbn-feed-carousel-nav {
  position: absolute;
  top: 50%;
  z-index: 4;
  width: 36px;
  height: 80px;
  padding: 0;
  border: 0;
  background: none;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0.4;
  transform: translateY(-50%);
  filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.7));
  transition: opacity 0.2s ease, transform 0.15s ease, filter 0.2s ease;
}

.cbn-feed-carousel-nav svg {
  width: 24px;
  height: 60px;
}

.cbn-feed-carousel-nav .cbn-nav-arrow {
  stroke: #fff;
}

.cbn-feed-carousel-prev {
  left: 8px;
}

.cbn-feed-carousel-next {
  right: 8px;
}

.cbn-feed-carousel:hover .cbn-feed-carousel-nav,
.cbn-feed-carousel:focus-within .cbn-feed-carousel-nav {
  opacity: 0.7;
}

.cbn-feed-carousel-nav:hover,
.cbn-feed-carousel-nav:focus-visible {
  opacity: 1;
  transform: translateY(-50%) scale(1.06);
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.7));
}

.cbn-feed-carousel-nav:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 4px;
}

.cbn-feed-carousel.is-single .cbn-feed-carousel-nav,
.cbn-feed-carousel-nav[hidden] {
  display: none;
}

.cbn-feed-hot {
  display: flex;
  flex-direction: column;
  min-height: 0;
  min-width: 0;
  height: clamp(200px, 22vw, 360px);
}

.cbn-feed-hot-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.cbn-feed-hot-accent {
  width: 4px;
  height: 18px;
  border-radius: 2px;
  background: var(--cbn-accent-a);
  flex-shrink: 0;
}

.cbn-feed-hot-title {
  margin: 0;
  color: #f1f5f9;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.cbn-feed-hot-viewport {
  position: relative;
  flex: 1;
  overflow: hidden;
  min-height: 0;
}

.cbn-feed-hot-list {
  display: flex;
  flex-direction: column;
  will-change: transform;
}

.cbn-feed-hot-item {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  text-decoration: none;
  color: inherit;
  box-sizing: border-box;
}

.cbn-feed-hot-item:hover .cbn-feed-hot-item-title {
  color: var(--cbn-accent-a);
}

.cbn-feed-hot-item-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.cbn-feed-hot-item-title {
  margin: 0;
  flex: 1;
  min-width: 0;
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color 0.2s ease;
}

.cbn-feed-hot-item-date {
  flex-shrink: 0;
  color: #94a3b8;
  font-size: 13px;
  line-height: 1.45;
  font-variant-numeric: tabular-nums;
}

.cbn-feed-hot-item-summary {
  margin: 8px 0 0;
  color: #64748b;
  font-size: 13px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cbn-feed-hot-empty,
.cbn-feed-carousel-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 160px;
  color: #64748b;
  font-size: 14px;
}

.cbn-feed-heading {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}

.cbn-feed-title {
  margin: 0;
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  background: var(--cbn-accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cbn-feed-filters {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  flex-wrap: wrap;
  gap: 18px 28px;
}

.cbn-category-group,
.cbn-category-filters {
  display: flex;
  align-items: center;
}

.cbn-category-filters {
  flex-wrap: wrap;
  gap: 0;
}

.cbn-filter-loading {
  min-height: 40px;
  padding: 10px 4px;
  color: #64748b;
  font-size: 14px;
}

.cbn-category-link {
  min-height: 40px;
  padding: 8px 2px;
  border: 0;
  color: #94a3b8;
  background: transparent;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.4;
  cursor: pointer;
  transition: color 0.2s ease;
}

.cbn-category-link:hover {
  color: #e2e8f0;
}

.cbn-category-link.is-active {
  color: #fff;
  font-weight: 700;
}

.cbn-category-sep {
  margin: 0 14px;
  color: rgba(148, 163, 184, 0.45);
  font-size: 14px;
  line-height: 1;
  user-select: none;
}

.cbn-category-link:focus-visible,
.cbn-year-trigger:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.cbn-year-filter {
  display: none;
}

.cbn-year-trigger {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  min-height: 40px;
  padding: 8px 16px 8px 18px;
  border: 1px solid rgba(96, 165, 250, 0.35);
  border-radius: 999px;
  color: #e2e8f0;
  background: rgba(96, 165, 250, 0.08);
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  box-sizing: border-box;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.cbn-year-trigger:hover,
.cbn-year-filter.is-open .cbn-year-trigger {
  border-color: #60a5fa;
  background: rgba(96, 165, 250, 0.16);
  color: #fff;
}

.cbn-year-trigger-text {
  flex: 1;
  text-align: left;
  color: inherit;
}

.cbn-year-trigger-caret {
  width: 7px;
  height: 7px;
  border-right: 1.5px solid #60a5fa;
  border-bottom: 1.5px solid #60a5fa;
  transform: translateY(-2px) rotate(45deg);
  opacity: 0.9;
  transition: transform 0.2s ease;
}

.cbn-year-filter.is-open .cbn-year-trigger-caret {
  transform: translateY(2px) rotate(225deg);
}

.cbn-year-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  z-index: 40;
  width: 100%;
  min-width: 100%;
  margin: 0;
  padding: 6px 0;
  list-style: none;
  border: 1px solid rgba(96, 165, 250, 0.28);
  border-radius: 14px;
  background: #12161f;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
  box-sizing: border-box;
}

.cbn-year-menu[hidden] {
  display: none;
}

.cbn-year-menu li {
  padding: 8px 18px;
  border-radius: 0;
  color: #cbd5e1;
  font-size: 14px;
  font-weight: 500;
  line-height: 24px;
  text-align: left;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.cbn-year-menu li:hover {
  color: #fff;
  background: rgba(96, 165, 250, 0.12);
}

.cbn-year-menu li[aria-selected="true"] {
  color: #fff;
  background: #60a5fa;
}

.cbn-feed {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  min-height: 420px;
}

.cbn-feed-page-chunk {
  display: contents;
}

.cbn-waterfall-item,
.cbn-feed-skeleton {
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100%;
}

.cbn-waterfall-item .cbn-card {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: 100%;
}

.cbn-waterfall-item .cbn-card-body {
  flex: 1;
}

.cbn-feed .cbn-card-title {
  width: 100%;
  min-width: 0;
  min-height: 3em;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  overflow-wrap: anywhere;
}

.cbn-feed .cbn-card-cover {
  position: relative;
  isolation: isolate;
}

.cbn-feed .cbn-card-cover.is-image-pending::after,
.cbn-feed .cbn-card-cover.is-image-loading::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background: rgba(255, 255, 255, 0.045);
  pointer-events: none;
}

.cbn-feed .cbn-card-cover.is-image-loading::after {
  background: linear-gradient(
    105deg,
    rgba(255, 255, 255, 0.025) 25%,
    rgba(255, 255, 255, 0.1) 42%,
    rgba(255, 255, 255, 0.025) 60%
  );
  background-size: 220% 100%;
  animation: cbn-cover-loading 1.35s ease-in-out infinite;
}

.cbn-feed .cbn-card-image {
  position: relative;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.32s ease, transform 0.8s ease;
}

.cbn-feed .cbn-card-image.is-loaded {
  opacity: 1;
}

/* 参考钛动：进场上浮渐显，离场反向渐隐 */
.cbn-waterfall-item {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
  transition:
    opacity 0.9s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.9s cubic-bezier(0.22, 1, 0.36, 1);
  transition-delay: var(--cbn-stagger, 0s);
}

.cbn-waterfall-item.is-inview {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

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

.cbn-feed-skeleton {
  overflow: hidden;
  padding-bottom: 24px;
  border: 1px solid var(--cbn-feed-border);
  border-radius: 24px;
  background: var(--cbn-feed-panel);
}

.cbn-feed-skeleton-cover,
.cbn-feed-skeleton-line {
  position: relative;
  display: block;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.065);
}

.cbn-feed-skeleton-cover {
  height: 200px;
  margin-bottom: 24px;
}

.cbn-feed-skeleton-line {
  width: 64%;
  height: 13px;
  margin: 0 24px 12px;
  border-radius: 999px;
}

.cbn-feed-skeleton-line-wide {
  width: calc(100% - 48px);
}

.cbn-feed-skeleton-line-short {
  width: 38%;
  margin-bottom: 0;
}

.cbn-feed-skeleton-cover::after,
.cbn-feed-skeleton-line::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  animation: cbn-skeleton-shimmer 1.4s ease-in-out infinite;
}

.cbn-feed-status {
  min-height: 0;
  padding: 0;
  color: #64748b;
  font-size: 14px;
  line-height: 24px;
  text-align: center;
}

.cbn-feed-status:not(:empty) {
  min-height: 48px;
  padding: 12px 16px;
}

.cbn-feed-status-loading::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-right: 9px;
  border: 2px solid rgba(255, 255, 255, 0.18);
  border-top-color: #fb923c;
  border-radius: 50%;
  vertical-align: -3px;
  animation: cbn-loader-spin 0.7s linear infinite;
}

.cbn-feed-status-complete {
  color: #94a3b8;
}

.cbn-feed-status-error {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  color: #cbd5e1;
}

.cbn-feed-retry {
  min-height: 44px;
  padding: 9px 28px;
  border: 1px solid rgba(249, 115, 22, 0.45);
  border-radius: 999px;
  color: #fff;
  background: rgba(249, 115, 22, 0.13);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.cbn-feed-more {
  min-height: 48px;
  padding: 10px 40px;
  border: 1px solid rgba(96, 165, 250, 0.45);
  border-radius: 999px;
  color: #e2e8f0;
  background: rgba(96, 165, 250, 0.12);
  font: inherit;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.cbn-feed-more:hover {
  border-color: #60a5fa;
  color: #fff;
  background: rgba(96, 165, 250, 0.22);
  transform: translateY(-1px);
}

.cbn-feed-more:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.cbn-feed-status-more {
  padding: 28px 16px 8px;
}

.cbn-feed-retry:hover {
  border-color: #f97316;
  background: #f97316;
  transform: translateY(-1px);
}

.cbn-feed-retry:focus-visible,
.navbar .cbn-nav-current:focus-visible {
  outline: 2px solid #fff;
  outline-offset: 3px;
}

.cbn-feed-empty {
  width: 100%;
  grid-column: 1 / -1;
  padding: 96px 24px;
  border: 1px solid var(--cbn-feed-border);
  border-radius: 24px;
  text-align: center;
  background: var(--cbn-feed-panel);
}

.cbn-feed-empty h2 {
  margin: 0 0 10px;
  color: #fff;
  font-size: 24px;
}

.cbn-feed-empty p {
  margin: 0;
  color: #94a3b8;
}

.cbn-feed-sentinel {
  width: 100%;
  height: 1px;
}

.navbar .cbn-nav-current {
  position: relative;
  color: #fff;
}

.navbar .cbn-nav-current::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -12px;
  width: 18px;
  height: 2px;
  border-radius: 99px;
  transform: translateX(-50%);
  background: #3b82f6;
}

.navbar .popover-content a.popover-item {
  display: block;
  height: auto;
  color: #9ca3af;
}

.navbar .popover-content a.popover-item:hover {
  color: #fff;
}

@keyframes cbn-skeleton-shimmer {
  to {
    transform: translateX(100%);
  }
}

@keyframes cbn-cover-loading {
  from {
    background-position: 100% 0;
  }
  to {
    background-position: -100% 0;
  }
}

@keyframes cbn-loader-spin {
  to {
    transform: rotate(360deg);
  }
}

@media (max-width: 1199px) {
  .navbar .nav-links {
    gap: 18px !important;
  }

  .navbar .nav-auth-links {
    display: none !important;
  }

  body > .bottomSidebar .bottomSidebar-top,
  body > .bottomSidebar .bottomSidebar-flex {
    width: 100%;
  }

  body > .bottomSidebar .bottomSidebar-flex {
    flex-wrap: wrap;
    gap: 32px;
  }
}

@media (max-width: 899px) {
  .navbar .nav-links > .nav-item-with-popover,
  .navbar .nav-links > a[href="index.html#advantage"],
  .navbar .nav-links > a[href="index.html#team"],
  .navbar .nav-links > a[href="index.html#contact"] {
    display: none;
  }

  .cbn-feed-spotlight {
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 44px;
    padding-bottom: 32px;
  }

  .cbn-feed-carousel {
    height: 240px;
  }

  .cbn-feed-carousel-nav {
    width: 28px;
    height: 59px;
  }

  .cbn-feed-carousel-nav svg {
    width: 19px;
    height: 47px;
  }

  .cbn-feed-carousel-prev {
    left: 4px;
  }

  .cbn-feed-carousel-next {
    right: 4px;
  }

  .cbn-feed-hot {
    height: auto;
    min-height: 240px;
    max-height: none;
  }

  .cbn-feed-hot-viewport {
    max-height: 280px;
  }

  .cbn-feed {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .cbn-feed-toolbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .cbn-feed-filters {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (max-width: 599px) {
  .cbn-feed-section {
    padding: 100px 16px 80px;
  }

  .cbn-feed-title {
    font-size: 22px;
  }

  .cbn-feed-carousel {
    height: 200px;
  }

  .cbn-feed-carousel-caption {
    padding: 40px 36px 52px;
  }

  .cbn-feed-hot {
    min-height: 200px;
  }

  .navbar .nav-links > a[href="case-studies.html"],
  .navbar .nav-links > a[href="about-us.html"] {
    display: none;
  }

  body > .bottomSidebar {
    padding: 42px 20px;
  }

  body > .bottomSidebar .bottomSidebar-top {
    align-items: flex-start;
    flex-direction: column;
    gap: 18px;
  }

  body > .bottomSidebar .bottomSidebar-flex {
    flex-direction: column;
  }

  body > .bottomSidebar .bottomSidebar-flex .util-list,
  body > .bottomSidebar .bottomSidebar-flex .info {
    margin-left: 0;
  }

  body > .bottomSidebar .qrcode {
    flex-wrap: wrap;
  }

  .cbn-feed {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .cbn-feed-skeleton-cover::after,
  .cbn-feed-skeleton-line::after,
  .cbn-feed .cbn-card-cover.is-image-loading::after,
  .cbn-feed-status-loading::before {
    animation: none;
  }

  .cbn-feed-carousel-slide {
    transition: none;
  }

  .cbn-feed-retry,
  .cbn-feed-more,
  .cbn-category-link,
  .cbn-card,
  .cbn-card-cover img,
  .cbn-card-arrow,
  .cbn-card-arrow svg,
  .cbn-feed-carousel-nav {
    transition: none;
    animation: none !important;
  }

  .cbn-edge-fade {
    display: none;
  }

  .cbn-waterfall-item {
    opacity: 1;
    transform: none;
    transition: none;
  }
}