:root {
  --bb-primary: var(--wh-primary, #2563eb);
  --bb-secondary: var(--wh-secondary, #0ea5a4);
  --bb-bg: var(--wh-bg, #f5f8ff);
  --bb-surface: var(--wh-surface, #ffffff);
  --bb-text: var(--wh-text, #1f2a3d);
  --bb-muted: var(--wh-muted, #667085);
  --bb-on-primary: var(--on-primary, #ffffff);
  --bb-accent: #fb923c;
  --bb-success: #12b981;
  --bb-border: color-mix(in srgb, var(--bb-text) 10%, transparent);
  --bb-border-strong: color-mix(in srgb, var(--bb-primary) 20%, transparent);
  --bb-shadow-sm: 0 18px 40px color-mix(in srgb, var(--bb-primary) 10%, transparent);
  --bb-shadow-md: 0 28px 60px color-mix(in srgb, var(--bb-text) 10%, transparent);
  --bb-radius-sm: 14px;
  --bb-radius-md: 22px;
  --bb-radius-lg: 32px;
  --bb-radius-pill: 999px;
  --bb-shell-width: 1240px;
  --bb-heading-gradient: linear-gradient(
    90deg,
    var(--bb-primary) 0%,
    color-mix(in srgb, var(--bb-primary) 52%, var(--bb-secondary) 48%) 100%
  );
  --bb-hero-bg: radial-gradient(
      circle at 18% 16%,
      color-mix(in srgb, var(--bb-primary) 18%, transparent) 0,
      transparent 38%
    ),
    radial-gradient(
      circle at 82% 22%,
      color-mix(in srgb, var(--bb-secondary) 16%, transparent) 0,
      transparent 34%
    ),
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--bb-bg) 97%, var(--bb-secondary) 3%) 0%,
      color-mix(in srgb, var(--bb-bg) 91%, var(--bb-primary) 9%) 100%
    );
  --bb-soft-bg: linear-gradient(
    180deg,
    color-mix(in srgb, var(--bb-bg) 98%, var(--bb-secondary) 2%),
    color-mix(in srgb, var(--bb-bg) 94%, var(--bb-primary) 6%)
  );
  --bb-cta-bg: linear-gradient(
    135deg,
    color-mix(in srgb, var(--bb-surface) 32%, var(--bb-primary) 68%),
    color-mix(in srgb, var(--bb-primary) 58%, var(--bb-secondary) 42%)
  );
  --bb-footer-bg: linear-gradient(
    135deg,
    color-mix(in srgb, var(--bb-text) 94%, var(--bb-primary) 6%),
    color-mix(in srgb, var(--bb-text) 84%, var(--bb-secondary) 16%)
  );
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bb-bg);
  color: var(--bb-text);
  font: 400 16px/1.6 Inter, "PingFang SC", "Microsoft YaHei", sans-serif;
}

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

a {
  color: inherit;
  text-decoration: none;
}

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

main {
  overflow: hidden;
}

.bb-shell {
  width: min(calc(100% - 40px), var(--bb-shell-width));
  margin: 0 auto;
}

.bb-page {
  min-height: 100vh;
}

.bb-list,
.bb-single {
  background: var(--bb-bg);
}

.bb-kicker {
  margin: 0 0 14px;
  color: color-mix(in srgb, var(--bb-primary) 76%, var(--bb-text));
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.bb-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 18px;
  font-size: 16px;
  font-weight: 700;
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.bb-button:hover {
  transform: translateY(-1px);
}

.bb-button--primary {
  color: var(--bb-on-primary);
  background: linear-gradient(
    135deg,
    var(--bb-primary),
    color-mix(in srgb, var(--bb-primary) 56%, var(--bb-secondary) 44%)
  );
  box-shadow: 0 16px 36px color-mix(in srgb, var(--bb-primary) 22%, transparent);
}

.bb-button--ghost {
  color: color-mix(in srgb, var(--bb-primary) 74%, var(--bb-text));
  border-color: var(--bb-border-strong);
  background: color-mix(in srgb, var(--bb-surface) 88%, transparent);
}

.bb-button--pill {
  min-height: 42px;
  padding: 0 18px;
  border-radius: var(--bb-radius-pill);
  font-size: 14px;
}

.bb-button--block {
  width: 100%;
}

.bb-site-bar {
  border-bottom: 1px solid var(--bb-border);
  background: color-mix(in srgb, var(--bb-surface) 86%, var(--bb-primary) 14%);
}

.bb-site-bar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 34px;
  font-size: 12px;
  color: var(--bb-muted);
}

.bb-site-bar__inner p {
  margin: 0;
}

.bb-site-bar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bb-site-bar__pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 22px;
  padding: 0 10px;
  border-radius: var(--bb-radius-pill);
  color: var(--bb-on-primary);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--bb-primary) 88%, var(--bb-secondary) 12%),
    color-mix(in srgb, var(--bb-primary) 56%, var(--bb-secondary) 44%)
  );
}

.bb-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--bb-border);
  backdrop-filter: blur(18px);
  background: color-mix(in srgb, var(--bb-surface) 78%, transparent);
}

.bb-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  min-height: 74px;
}

.bb-brand {
  display: inline-flex;
  align-items: center;
}

.bb-brand img {
  width: auto;
  height: 34px;
}

.bb-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.bb-nav__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 12px;
  border-radius: var(--bb-radius-pill);
  color: var(--bb-muted);
  font-weight: 600;
  transition: color 0.2s ease, background 0.2s ease;
}

.bb-nav__link:hover,
.bb-nav__link.is-active {
  color: var(--bb-primary);
  background: color-mix(in srgb, var(--bb-primary) 8%, var(--bb-surface));
}

.bb-header__meta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.bb-header__lang {
  color: var(--bb-muted);
  font-size: 14px;
  font-weight: 600;
}

.bb-hero {
  padding: 54px 0 28px;
  background: var(--bb-hero-bg);
}

.bb-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
  gap: 40px;
  align-items: center;
  min-height: 620px;
}

.bb-hero__copy {
  position: relative;
  z-index: 1;
}

.bb-hero__brand {
  margin: 0 0 14px;
  font-size: clamp(42px, 6vw, 68px);
  font-weight: 800;
  line-height: 0.95;
  background: var(--bb-heading-gradient);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.bb-hero__copy h1 {
  max-width: 9ch;
  margin: 0 0 20px;
  font-size: clamp(42px, 6.4vw, 76px);
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.bb-hero__summary,
.bb-page-hero__center p,
.bb-section__intro p,
.bb-fingerprint__copy p,
.bb-cap-card p,
.bb-eco-card p,
.bb-testimonial p,
.bb-feed-panel__list span,
.bb-scene-card p,
.bb-platform-card p,
.bb-richtext p,
.bb-richtext li,
.bb-related-card p,
.bb-side-card p,
.bb-post-item p {
  color: var(--bb-muted);
}

.bb-hero__summary {
  max-width: 560px;
  margin: 0 0 22px;
  font-size: 18px;
}

.bb-hero__points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
  margin: 0 0 30px;
}

.bb-hero__points span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: color-mix(in srgb, var(--bb-primary) 74%, var(--bb-text));
  font-size: 15px;
  font-weight: 600;
}

.bb-hero__points span::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--bb-primary) 64%, var(--bb-secondary));
  content: "";
}

.bb-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 20px;
}

.bb-hero__note {
  max-width: 520px;
  margin: 0;
  font-size: 14px;
}

.bb-hero__visual {
  position: relative;
  min-height: 540px;
}

.bb-hero-orbit {
  position: relative;
  width: min(100%, 640px);
  height: 520px;
  margin-left: auto;
}

.bb-hero-orbit__ring {
  position: absolute;
  border: 1px dashed color-mix(in srgb, var(--bb-primary) 18%, transparent);
  border-radius: 50%;
  pointer-events: none;
}

.bb-hero-orbit__ring--lg {
  inset: 22px 0 14px 72px;
}

.bb-hero-orbit__ring--md {
  inset: 88px 96px 84px 144px;
}

.bb-hero-orbit__ring--sm {
  inset: 154px 182px 146px 228px;
}

.bb-hero-orbit__spark {
  position: absolute;
  width: 12px;
  height: 12px;
  background: color-mix(in srgb, var(--bb-secondary) 78%, var(--bb-surface));
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.bb-hero-orbit__spark--01 {
  top: 66px;
  right: 110px;
}

.bb-hero-orbit__spark--02 {
  top: 188px;
  left: 108px;
}

.bb-hero-orbit__spark--03 {
  bottom: 116px;
  right: 88px;
}

.bb-hero-orbit__card {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 190px;
  height: 72px;
  padding: 0 24px;
  border: 1px solid rgba(255, 255, 255, 0.88);
  border-radius: 18px;
  color: var(--bb-on-primary);
  box-shadow: 0 20px 40px color-mix(in srgb, var(--bb-text) 12%, transparent);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.bb-hero-orbit__card--01 {
  top: 40px;
  right: 192px;
  transform: rotate(10deg);
  background: color-mix(in srgb, var(--bb-primary) 86%, var(--bb-secondary) 14%);
}

.bb-hero-orbit__card--02 {
  top: 78px;
  right: 18px;
  transform: rotate(-10deg);
  background: color-mix(in srgb, var(--bb-secondary) 86%, var(--bb-text) 14%);
}

.bb-hero-orbit__card--03 {
  top: 208px;
  left: 70px;
  transform: rotate(-9deg);
  background: color-mix(in srgb, var(--bb-primary) 58%, var(--bb-text) 42%);
}

.bb-hero-orbit__card--04 {
  top: 184px;
  right: 108px;
  transform: rotate(8deg);
  background: color-mix(in srgb, var(--bb-accent) 86%, var(--bb-surface) 14%);
}

.bb-hero-orbit__card--05 {
  bottom: 84px;
  right: 42px;
  transform: rotate(11deg);
  background: color-mix(in srgb, var(--bb-secondary) 80%, var(--bb-primary) 20%);
}

.bb-hero-orbit__card--06 {
  bottom: 56px;
  left: 86px;
  transform: rotate(-20deg);
  background: color-mix(in srgb, var(--bb-accent) 66%, var(--bb-primary) 34%);
}

.bb-hero-band {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 22px;
  padding: 18px 24px;
  border-radius: 24px;
  color: var(--bb-on-primary);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--bb-primary) 82%, var(--bb-secondary) 18%),
    color-mix(in srgb, var(--bb-primary) 62%, var(--bb-text) 38%)
  );
  box-shadow: var(--bb-shadow-md);
}

.bb-hero-band strong {
  font-size: 18px;
}

.bb-hero-band span {
  color: color-mix(in srgb, var(--bb-on-primary) 86%, transparent);
}

.bb-hero-band em {
  font-style: normal;
  font-weight: 700;
}

.bb-rating-row {
  padding: 26px 0 6px;
}

.bb-rating-row__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 22px;
}

.bb-rating-row__inner span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 138px;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--bb-border-strong);
  border-radius: var(--bb-radius-pill);
  background: color-mix(in srgb, var(--bb-surface) 92%, transparent);
  color: color-mix(in srgb, var(--bb-primary) 70%, var(--bb-text));
  font-weight: 700;
  text-transform: lowercase;
}

.bb-section {
  padding: 96px 0;
}

.bb-section--soft {
  background: var(--bb-soft-bg);
}

.bb-section--tight {
  padding: 72px 0;
}

.bb-section__intro {
  max-width: 760px;
  margin: 0 auto 42px;
  text-align: center;
}

.bb-section__intro--compact {
  margin-bottom: 24px;
}

.bb-section__intro h1,
.bb-section__intro h2,
.bb-page-hero__center h1,
.bb-home-cta h2,
.bb-article-head h1 {
  margin: 0 0 16px;
  font-size: clamp(34px, 4.6vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.bb-fingerprint__layout {
  display: grid;
  grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
  gap: 36px;
  align-items: center;
}

.bb-fingerprint__copy h3 {
  margin: 0 0 16px;
  font-size: 30px;
  line-height: 1.18;
}

.bb-fingerprint__copy p {
  margin: 0 0 14px;
}

.bb-fingerprint__orbit {
  position: relative;
  min-height: 520px;
}

.bb-fingerprint__orbit::before,
.bb-fingerprint__orbit::after {
  position: absolute;
  left: 50%;
  top: 50%;
  border: 1px solid color-mix(in srgb, var(--bb-primary) 18%, transparent);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  content: "";
}

.bb-fingerprint__orbit::before {
  width: 430px;
  height: 430px;
}

.bb-fingerprint__orbit::after {
  width: 270px;
  height: 270px;
}

.bb-fingerprint__core {
  position: absolute;
  left: 50%;
  top: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 104px;
  height: 104px;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  color: var(--bb-on-primary);
  background: linear-gradient(
    135deg,
    var(--bb-primary),
    color-mix(in srgb, var(--bb-primary) 52%, var(--bb-secondary) 48%)
  );
  box-shadow: 0 20px 44px color-mix(in srgb, var(--bb-primary) 20%, transparent);
  font-size: 42px;
  font-weight: 800;
}

.bb-fingerprint__node {
  position: absolute;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 134px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--bb-border-strong);
  border-radius: var(--bb-radius-pill);
  background: color-mix(in srgb, var(--bb-surface) 94%, transparent);
  box-shadow: var(--bb-shadow-sm);
  color: color-mix(in srgb, var(--bb-primary) 74%, var(--bb-text));
  font-size: 14px;
  font-weight: 600;
}

.bb-fingerprint__node--01 { left: 2%; top: 10%; }
.bb-fingerprint__node--02 { left: -1%; top: 28%; }
.bb-fingerprint__node--03 { left: 1%; top: 47%; }
.bb-fingerprint__node--04 { left: 10%; top: 67%; }
.bb-fingerprint__node--05 { left: 21%; top: 4%; }
.bb-fingerprint__node--06 { left: 23%; top: 58%; }
.bb-fingerprint__node--07 { right: 20%; top: 60%; }
.bb-fingerprint__node--08 { right: 6%; top: 11%; }
.bb-fingerprint__node--09 { right: -2%; top: 34%; }
.bb-fingerprint__node--10 { right: 4%; top: 69%; }
.bb-fingerprint__node--11 { left: 35%; top: 15%; }
.bb-fingerprint__node--12 { right: 30%; top: 40%; }

.bb-card-grid,
.bb-eco-grid,
.bb-testimonial-grid,
.bb-home-feeds,
.bb-scene-grid,
.bb-featured-strip,
.bb-related-grid,
.bb-download-grid,
.bb-security-grid {
  display: grid;
  gap: 20px;
}

.bb-card-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bb-cap-card,
.bb-eco-card,
.bb-testimonial,
.bb-feed-panel,
.bb-scene-card,
.bb-featured-card,
.bb-post-item,
.bb-side-card,
.bb-related-card,
.bb-platform-card,
.bb-security-item,
.bb-richtext {
  border: 1px solid var(--bb-border);
  border-radius: var(--bb-radius-md);
  background: color-mix(in srgb, var(--bb-surface) 96%, transparent);
  box-shadow: var(--bb-shadow-sm);
}

.bb-cap-card,
.bb-eco-card,
.bb-testimonial,
.bb-scene-card,
.bb-platform-card,
.bb-side-card {
  padding: 28px;
}

.bb-cap-card__icon,
.bb-platform-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 76px;
  height: 76px;
  margin-bottom: 18px;
  border-radius: 24px;
  color: var(--bb-on-primary);
  background: linear-gradient(
    135deg,
    var(--bb-primary),
    color-mix(in srgb, var(--bb-primary) 50%, var(--bb-secondary) 50%)
  );
  box-shadow: 0 18px 36px color-mix(in srgb, var(--bb-primary) 18%, transparent);
  font-size: 20px;
  font-weight: 800;
}

.bb-cap-card h3,
.bb-eco-card h3,
.bb-testimonial strong,
.bb-feed-panel h3,
.bb-scene-card h3,
.bb-platform-card h2,
.bb-side-card h2,
.bb-related-card strong {
  margin: 0 0 10px;
  font-size: 24px;
  line-height: 1.18;
}

.bb-eco-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.bb-testimonial-grid,
.bb-scene-grid,
.bb-related-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bb-testimonial strong {
  display: block;
}

.bb-home-feeds {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.bb-feed-panel {
  padding: 30px;
}

.bb-feed-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.bb-feed-panel__head a,
.bb-scene-card a,
.bb-post-item__link {
  color: color-mix(in srgb, var(--bb-primary) 76%, var(--bb-text));
  font-weight: 700;
}

.bb-feed-panel__list,
.bb-side-card__list {
  display: grid;
  gap: 14px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.bb-feed-panel__list li,
.bb-side-card__list li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--bb-border);
}

.bb-feed-panel__list li:last-child,
.bb-side-card__list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.bb-feed-panel__list a,
.bb-side-card__list a {
  font-weight: 600;
}

.bb-scene-card a {
  display: inline-flex;
  margin-top: 14px;
}

.bb-home-cta {
  padding: 22px 0 110px;
}

.bb-home-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 28px;
  padding: 36px;
  border-radius: var(--bb-radius-lg);
  color: var(--bb-on-primary);
  background: var(--bb-cta-bg);
  box-shadow: var(--bb-shadow-md);
}

.bb-home-cta__inner p {
  color: color-mix(in srgb, var(--bb-on-primary) 84%, transparent);
}

.bb-page-hero {
  padding: 38px 0 16px;
  background: var(--bb-hero-bg);
}

.bb-page-hero--list,
.bb-page-hero--single {
  padding-bottom: 28px;
}

.bb-page-hero--download {
  padding-bottom: 42px;
}

.bb-page-hero__center {
  max-width: 920px;
  margin: 0 auto;
  text-align: center;
}

.bb-featured-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bb-featured-card {
  position: relative;
  overflow: hidden;
  min-height: 100%;
}

.bb-featured-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.bb-featured-card__badge {
  position: absolute;
  right: -32px;
  top: 20px;
  padding: 9px 42px;
  color: var(--bb-on-primary);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--bb-accent) 82%, var(--bb-primary) 18%),
    color-mix(in srgb, var(--bb-accent) 64%, var(--bb-secondary) 36%)
  );
  font-size: 13px;
  font-weight: 800;
  transform: rotate(45deg);
}

.bb-featured-card__body {
  padding: 18px;
}

.bb-filter-tabs {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 24px;
  padding: 10px;
  border: 1px solid var(--bb-border);
  border-radius: var(--bb-radius-pill);
  background: color-mix(in srgb, var(--bb-surface) 90%, transparent);
}

.bb-filter-tabs a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 12px;
  border-radius: var(--bb-radius-pill);
  color: var(--bb-muted);
  font-weight: 600;
}

.bb-filter-tabs a.is-active,
.bb-filter-tabs a:hover {
  color: var(--bb-on-primary);
  background: linear-gradient(
    135deg,
    var(--bb-primary),
    color-mix(in srgb, var(--bb-primary) 56%, var(--bb-secondary) 44%)
  );
}

.bb-post-list {
  display: grid;
  gap: 20px;
}

.bb-post-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  align-items: center;
  gap: 24px;
  padding: 24px;
}

.bb-post-item__copy,
.bb-article-main {
  min-width: 0;
}

.bb-post-item__meta,
.bb-article-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--bb-muted);
  font-size: 14px;
}

.bb-post-item h2 {
  margin: 12px 0;
  font-size: 32px;
  line-height: 1.16;
}

.bb-post-item__media img {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: 18px;
  object-fit: cover;
}

.bb-empty-state {
  padding: 56px 28px;
  border: 1px dashed var(--bb-border-strong);
  border-radius: var(--bb-radius-lg);
  background: color-mix(in srgb, var(--bb-surface) 96%, transparent);
  text-align: center;
}

.bb-pagination {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  margin-top: 26px;
}

.bb-pagination__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--bb-border);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bb-surface) 94%, transparent);
  font-weight: 600;
}

.bb-pagination__link.is-active,
.bb-pagination__link:hover {
  color: var(--bb-on-primary);
  background: linear-gradient(
    135deg,
    var(--bb-primary),
    color-mix(in srgb, var(--bb-primary) 56%, var(--bb-secondary) 44%)
  );
}

.bb-article-layout,
.bb-download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  align-items: start;
  gap: 28px;
}

.bb-article-side {
  display: grid;
  gap: 20px;
}

.bb-article-head {
  margin-bottom: 28px;
}

.bb-article-head__summary {
  max-width: 760px;
  margin: 16px 0 22px;
  font-size: 18px;
}

.bb-article-head__image {
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--bb-radius-lg);
  object-fit: cover;
  box-shadow: var(--bb-shadow-md);
}

.bb-side-card--cta {
  color: var(--bb-on-primary);
  background: var(--bb-cta-bg);
}

.bb-side-card--cta p {
  color: color-mix(in srgb, var(--bb-on-primary) 84%, transparent);
}

.bb-side-card__actions {
  display: grid;
  gap: 12px;
  margin-top: 22px;
}

.bb-related-card {
  overflow: hidden;
}

.bb-related-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.bb-related-card div {
  padding: 18px;
}

.bb-download-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.bb-platform-card {
  text-align: center;
}

.bb-platform-card__icon {
  margin-inline: auto;
}

.bb-platform-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.bb-platform-meta span,
.bb-platform-meta a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--bb-border);
  border-radius: var(--bb-radius-pill);
  background: color-mix(in srgb, var(--bb-surface) 92%, transparent);
  color: var(--bb-muted);
  font-size: 14px;
}

.bb-update-log {
  display: grid;
  gap: 10px;
}

.bb-update-log__item {
  display: block;
  padding: 16px 0;
  border-bottom: 1px solid var(--bb-border);
  color: color-mix(in srgb, var(--bb-primary) 76%, var(--bb-text));
  font-weight: 600;
}

.bb-hero-band--download {
  position: relative;
  z-index: 1;
  margin-top: -22px;
}

.bb-security-grid {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.bb-security-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 18px 12px;
  text-align: center;
}

.bb-security-item img {
  width: 62px;
  height: 62px;
  object-fit: contain;
}

.bb-richtext {
  padding: 32px;
  font-size: 16px;
}

.bb-richtext > :first-child {
  margin-top: 0;
}

.bb-richtext > :last-child {
  margin-bottom: 0;
}

.bb-richtext h2,
.bb-richtext h3,
.bb-richtext h4 {
  color: var(--bb-text);
  line-height: 1.18;
}

.bb-richtext h2 {
  margin-top: 2.5em;
  margin-bottom: 0.7em;
  font-size: 32px;
}

.bb-richtext h3 {
  margin-top: 2em;
  margin-bottom: 0.65em;
  font-size: 24px;
}

.bb-richtext ul,
.bb-richtext ol {
  padding-left: 24px;
}

.bb-richtext a {
  color: color-mix(in srgb, var(--bb-primary) 82%, var(--bb-text));
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.bb-richtext img {
  width: 100%;
  margin: 28px 0;
  border-radius: 20px;
}

.bb-richtext table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  overflow: hidden;
  border-radius: 18px;
  border: 1px solid var(--bb-border);
}

.bb-richtext th,
.bb-richtext td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--bb-border);
  text-align: left;
  vertical-align: top;
}

.bb-richtext th {
  background: color-mix(in srgb, var(--bb-primary) 8%, var(--bb-surface));
}

.bb-footer {
  margin-top: 96px;
  color: rgba(255, 255, 255, 0.86);
  background: var(--bb-footer-bg);
}

.bb-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
  gap: 40px;
  padding: 56px 0 34px;
}

.bb-brand--footer img {
  filter: brightness(0) invert(1);
}

.bb-footer__brand p {
  max-width: 440px;
  margin: 18px 0 24px;
  color: rgba(255, 255, 255, 0.72);
}

.bb-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}

.bb-footer__cols h3 {
  margin: 0 0 14px;
  color: var(--bb-on-primary);
  font-size: 16px;
}

.bb-footer__cols a {
  display: block;
  margin-bottom: 10px;
  color: rgba(255, 255, 255, 0.74);
}

.bb-footer__cols a:hover {
  color: var(--bb-on-primary);
}

.bb-footer__bar {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.bb-footer__bar-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 1180px) {
  .bb-hero__grid,
  .bb-fingerprint__layout,
  .bb-home-cta__inner,
  .bb-footer__top,
  .bb-article-layout,
  .bb-download-layout {
    grid-template-columns: 1fr;
  }

  .bb-hero__visual {
    min-height: 500px;
  }

  .bb-hero-orbit {
    margin-inline: auto;
  }

  .bb-eco-grid,
  .bb-security-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .bb-footer__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .bb-header__inner {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 14px 0;
  }

  .bb-nav {
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .bb-header__meta {
    justify-content: space-between;
  }

  .bb-card-grid,
  .bb-featured-strip,
  .bb-testimonial-grid,
  .bb-home-feeds,
  .bb-scene-grid,
  .bb-download-grid,
  .bb-related-grid,
  .bb-eco-grid,
  .bb-security-grid {
    grid-template-columns: 1fr;
  }

  .bb-filter-tabs {
    grid-template-columns: 1fr;
  }

  .bb-post-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .bb-shell {
    width: min(calc(100% - 28px), var(--bb-shell-width));
  }

  .bb-site-bar__inner,
  .bb-home-cta__inner,
  .bb-footer__bar-inner {
    display: grid;
    gap: 10px;
  }

  .bb-hero {
    padding-top: 28px;
  }

  .bb-hero__grid {
    gap: 28px;
    min-height: 0;
  }

  .bb-hero__copy h1,
  .bb-page-hero__center h1,
  .bb-home-cta h2,
  .bb-article-head h1,
  .bb-section__intro h2 {
    font-size: clamp(34px, 10vw, 46px);
  }

  .bb-hero__summary,
  .bb-article-head__summary {
    font-size: 16px;
  }

  .bb-hero__actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .bb-hero__visual {
    min-height: 420px;
  }

  .bb-hero-orbit {
    height: 420px;
  }

  .bb-hero-orbit__card {
    min-width: 132px;
    height: 54px;
    padding: 0 14px;
    border-radius: 14px;
    font-size: 12px;
  }

  .bb-hero-orbit__card--01 { top: 26px; right: 108px; }
  .bb-hero-orbit__card--02 { top: 56px; right: 10px; }
  .bb-hero-orbit__card--03 { top: 166px; left: 18px; }
  .bb-hero-orbit__card--04 { top: 154px; right: 54px; }
  .bb-hero-orbit__card--05 { bottom: 76px; right: 8px; }
  .bb-hero-orbit__card--06 { bottom: 46px; left: 30px; }

  .bb-hero-band {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .bb-fingerprint__orbit {
    min-height: 640px;
    transform: scale(0.78);
    transform-origin: top center;
  }

  .bb-richtext,
  .bb-cap-card,
  .bb-eco-card,
  .bb-testimonial,
  .bb-feed-panel,
  .bb-scene-card,
  .bb-platform-card,
  .bb-side-card {
    padding: 22px;
  }

  .bb-footer__cols {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0s !important;
    animation-duration: 0s !important;
  }
}