:root {
  --b3-bg: #000000;
  --b3-bg-2: #0a0a0a;
  --b3-card: #141414;
  --b3-card-2: #1a1a1a;
  --b3-border: #2a2a2a;
  --b3-text: #ffffff;
  --b3-muted: #a3a3a3;
  --b3-dim: #737373;
  --b3-accent: #ffffff;
  --b3-up: #22c55e;
  --b3-down: #ef4444;
  --b3-radius: 12px;
  --b3-max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--b3-bg);
  color: var(--b3-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--b3-text); text-decoration: none; }
a:hover { opacity: 0.85; }
img { max-width: 100%; height: auto; display: block; }

.b3-skip { position: absolute; left: -9999px; }
.b3-skip:focus {
  left: 16px; top: 16px; z-index: 9999;
  padding: 8px 16px; background: #fff; color: #000; border-radius: 8px;
}

.b3-container {
  width: 100%;
  max-width: var(--b3-max);
  margin: 0 auto;
  padding: 0 24px;
}
.b3-container--narrow { max-width: 860px; }

/* Header */
.b3-header {
  position: sticky;
  top: 0;
  z-index: 300;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--b3-border);
}
@media (max-width: 768px) {
  .b3-header { position: relative; }
}
.b3-header__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 64px;
}
.b3-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--b3-text);
  flex-shrink: 0;
}
.b3-brand__mark {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: #fff;
  color: #000;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
}
.b3-brand__text { font-size: 16px; font-weight: 700; }

.b3-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
  flex-wrap: wrap;
}
.b3-nav a {
  padding: 8px 14px;
  color: var(--b3-muted);
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  transition: color .2s, background .2s;
}
.b3-nav a:hover { color: #fff; background: rgba(255,255,255,0.06); }

.b3-header__actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
  flex-shrink: 0;
}
.b3-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: 1px solid var(--b3-border);
  border-radius: 8px;
  cursor: pointer;
  margin-left: auto;
}
.b3-nav-toggle span { display: block; width: 22px; height: 2px; background: #fff; }

/* Buttons */
.b3-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s, opacity .2s;
  text-decoration: none;
  white-space: nowrap;
}
.b3-btn:hover { transform: translateY(-1px); opacity: 0.92; }
.b3-btn--white { background: #fff; color: #000; border-color: #fff; }
.b3-btn--outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.35); }
.b3-btn--outline:hover { border-color: #fff; }
.b3-btn--ghost { background: transparent; color: #fff; border-color: var(--b3-border); }
.b3-btn--ghost:hover { background: rgba(255,255,255,0.06); }
.b3-btn--sm { padding: 8px 18px; font-size: 13px; }
.b3-btn--lg { padding: 14px 32px; font-size: 15px; }

/* Hero */
.b3-hero {
  padding: 64px 0 0;
  background: radial-gradient(ellipse 80% 60% at 70% 20%, rgba(255,255,255,0.04) 0%, transparent 60%);
}
.b3-hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding-bottom: 48px;
}
.b3-hero__title {
  margin: 0 0 12px;
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.b3-hero__tagline {
  margin: 0 0 16px;
  font-size: clamp(18px, 2.5vw, 24px);
  font-weight: 600;
  color: var(--b3-muted);
}
.b3-hero__lead {
  margin: 0 0 28px;
  font-size: 16px;
  color: var(--b3-dim);
  max-width: 520px;
  line-height: 1.75;
}
.b3-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.b3-hero__visual { text-align: center; }
.b3-hero__phone {
  width: 220px;
  height: 440px;
  margin: 0 auto;
  border-radius: 32px;
  border: 3px solid #333;
  background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
  padding: 14px;
  position: relative;
}
.b3-hero__phone-screen {
  height: 100%;
  border-radius: 22px;
  background: #0f0f0f;
  padding: 20px 16px;
  overflow: hidden;
}
.b3-hero__phone-bar { font-size: 11px; color: var(--b3-dim); margin-bottom: 8px; }
.b3-hero__phone-price { font-size: 28px; font-weight: 800; margin-bottom: 4px; }
.b3-hero__phone-change { font-size: 14px; font-weight: 700; margin-bottom: 20px; }
.b3-hero__phone-change.up { color: var(--b3-up); }
.b3-hero__phone-chart {
  display: flex;
  align-items: flex-end;
  gap: 4px;
  height: 120px;
  margin-top: 16px;
}
.b3-hero__phone-chart span {
  flex: 1;
  border-radius: 2px 2px 0 0;
  background: linear-gradient(180deg, #fff 0%, #666 100%);
  min-height: 8px;
}
.b3-hero__caption {
  margin: 20px 0 0;
  font-size: 13px;
  color: var(--b3-dim);
}

.b3-ticker {
  border-top: 1px solid var(--b3-border);
  border-bottom: 1px solid var(--b3-border);
  padding: 14px 0;
  background: var(--b3-bg-2);
}
.b3-ticker__track {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 40px;
  font-size: 14px;
  color: var(--b3-muted);
}
.b3-ticker__track strong { color: #fff; margin-right: 8px; }
.b3-ticker__track em { font-style: normal; font-weight: 700; margin-left: 6px; }
.up, .b3-ticker__track .up { color: var(--b3-up); }
.down, .b3-ticker__track .down { color: var(--b3-down); }

/* Sections */
.b3-section { padding: 80px 0; border-top: 1px solid var(--b3-border); }
.b3-section--alt { background: var(--b3-bg-2); }
.b3-section--center { text-align: center; }
.b3-section--article { padding-top: 40px; }

.b3-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.b3-section__head--center {
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.b3-section__title {
  margin: 0;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  letter-spacing: -0.02em;
}
.b3-section__desc {
  margin: 12px 0 0;
  color: var(--b3-muted);
  font-size: 16px;
  max-width: 640px;
  line-height: 1.7;
}
.b3-section__more {
  font-size: 14px;
  color: var(--b3-muted);
  border-bottom: 1px solid var(--b3-border);
  padding-bottom: 2px;
}
.b3-section__more:hover { color: #fff; }

/* Grids */
.b3-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.b3-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }

.b3-icon-card {
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  padding: 28px 22px;
  transition: border-color .2s, background .2s;
}
.b3-icon-card:hover { border-color: #444; background: var(--b3-card-2); }
.b3-icon-card__icon { font-size: 28px; display: block; margin-bottom: 14px; }
.b3-icon-card h3 { margin: 0 0 10px; font-size: 17px; font-weight: 700; }
.b3-icon-card p { margin: 0; font-size: 14px; color: var(--b3-muted); line-height: 1.65; }

/* Split sections */
.b3-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.b3-split--reverse .b3-split__visual { order: -1; }
.b3-feature-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}
.b3-feature-list li {
  padding: 16px 0;
  border-bottom: 1px solid var(--b3-border);
}
.b3-feature-list li:last-child { border-bottom: none; }
.b3-feature-list strong {
  display: block;
  font-size: 16px;
  margin-bottom: 4px;
}
.b3-feature-list span { font-size: 14px; color: var(--b3-muted); }
.b3-link-arrow {
  display: inline-block;
  margin-top: 24px;
  font-weight: 600;
  color: #fff;
  border-bottom: 1px solid #fff;
  padding-bottom: 2px;
}

.b3-deco-logo {
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 900;
  color: rgba(255,255,255,0.06);
  text-align: center;
  letter-spacing: -0.04em;
  line-height: 1;
}
.b3-deco-engine {
  position: relative;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.b3-deco-engine__doc {
  width: 160px;
  height: 200px;
  border: 2px solid #333;
  border-radius: 8px;
  background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.05) 40%, rgba(255,255,255,0.05) 60%, transparent 60%);
}
.b3-deco-engine__gear {
  position: absolute;
  right: 20%;
  bottom: 20%;
  width: 64px;
  height: 64px;
  border: 3px solid #444;
  border-radius: 50%;
  border-style: dashed;
}
.b3-deco-laptop {
  width: 280px;
  height: 180px;
  margin: 0 auto;
  border-radius: 12px 12px 4px 4px;
  border: 2px solid #333;
  background: linear-gradient(180deg, #1a1a1a 0%, var(--b3-card) 100%);
  position: relative;
  z-index: 1;
}
.b3-deco-laptop::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 56px;
  height: 64px;
  background:
    radial-gradient(circle at 50% 38%, transparent 18px, #555 18px, #555 20px, transparent 20px),
    linear-gradient(#555, #555) center 42px / 36px 28px no-repeat,
    linear-gradient(#444, #444) center bottom / 44px 8px no-repeat;
  border-radius: 4px;
  opacity: 0.85;
}
.b3-deco-laptop::after {
  content: "";
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 120%;
  height: 8px;
  background: #222;
  border-radius: 0 0 8px 8px;
}
.b3-split__visual--shield {
  position: relative;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.b3-split__visual--shield::before,
.b3-split__visual--shield::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 1px solid #444;
  background: rgba(255,255,255,0.04);
}
.b3-split__visual--shield::before { top: 18%; right: 12%; box-shadow: -80px 40px 0 -2px rgba(255,255,255,0.06), -140px 100px 0 -3px rgba(255,255,255,0.04); }
.b3-split__visual--shield::after { bottom: 22%; left: 8%; box-shadow: 90px -30px 0 -2px rgba(255,255,255,0.06), 150px 50px 0 -3px rgba(255,255,255,0.04); }

.b3-link-card {
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  padding: 28px;
  transition: border-color .2s;
}
.b3-link-card:hover { border-color: #555; }
.b3-link-card h3 { margin: 0 0 10px; font-size: 18px; }
.b3-link-card p { margin: 0 0 16px; font-size: 14px; color: var(--b3-muted); line-height: 1.65; }
.b3-link-card a { font-size: 14px; font-weight: 600; color: #fff; }

.b3-dual-icons {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.b3-dual-icons__item { text-align: center; max-width: 200px; }
.b3-dual-icons__icon { font-size: 40px; display: block; margin-bottom: 12px; }
.b3-dual-icons__item strong { display: block; font-size: 18px; margin-bottom: 6px; }
.b3-dual-icons__item p { margin: 0 0 12px; font-size: 14px; color: var(--b3-muted); }
.b3-link-arrow {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  border-bottom: 1px solid rgba(255,255,255,0.35);
  padding-bottom: 2px;
}
.b3-link-arrow:hover { opacity: 1; border-color: #fff; }

/* FAQ */
.b3-faq { border-top: 1px solid var(--b3-border); }
.b3-faq__item { border-bottom: 1px solid var(--b3-border); }
.b3-faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
  background: none;
  border: none;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.b3-faq__q::after {
  content: "+";
  font-size: 20px;
  color: var(--b3-muted);
  transition: transform .2s;
}
.b3-faq__item.is-open .b3-faq__q::after { content: "−"; }
.b3-faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.b3-faq__item.is-open .b3-faq__a { max-height: 320px; }
.b3-faq__a p { margin: 0 0 20px; font-size: 14px; color: var(--b3-muted); line-height: 1.7; }

/* Cards / News */
.b3-hot-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: start;
}
.b3-card {
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  overflow: hidden;
  transition: border-color .2s;
}
.b3-card:hover { border-color: #444; }
.b3-card a { color: inherit; display: block; }
.b3-card--featured .b3-card__media { aspect-ratio: 16/9; overflow: hidden; background: #111; }
.b3-card--featured .b3-card__media img { width: 100%; height: 100%; object-fit: cover; }
.b3-card__body { padding: 20px; }
.b3-card__title { margin: 0 0 8px; font-size: 18px; font-weight: 700; line-height: 1.4; }
.b3-card__desc {
  margin: 0 0 12px;
  font-size: 14px;
  color: var(--b3-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.b3-meta { font-size: 13px; color: var(--b3-dim); display: flex; gap: 16px; }

.b3-hot-list { display: flex; flex-direction: column; gap: 12px; }
.b3-hot-item {
  display: block;
  padding: 16px 18px;
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  transition: border-color .2s;
}
.b3-hot-item:hover { border-color: #444; }
.b3-hot-item h3 { margin: 0 0 6px; font-size: 15px; font-weight: 600; }

.b3-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.b3-news-card {
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  overflow: hidden;
  transition: border-color .2s;
}
.b3-news-card:hover { border-color: #444; }
.b3-news-card a { display: block; color: inherit; }
.b3-news-card__media { aspect-ratio: 16/10; overflow: hidden; background: #111; }
.b3-news-card__media img { width: 100%; height: 100%; object-fit: cover; }
.b3-news-card__body { padding: 18px; }
.b3-news-card__body h3 {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.b3-news-card__body p {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--b3-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.b3-mosaic {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.b3-mosaic__item {
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  overflow: hidden;
  transition: border-color .2s;
}
.b3-mosaic__item:hover { border-color: #444; }
.b3-mosaic__link { display: block; color: inherit; }
.b3-mosaic__thumb { aspect-ratio: 16/10; overflow: hidden; background: #111; }
.b3-mosaic__thumb img { width: 100%; height: 100%; object-fit: cover; }
.b3-mosaic__body { padding: 14px; }
.b3-mosaic__title { margin: 6px 0 0; font-size: 15px; font-weight: 600; line-height: 1.4; }

.b3-links { display: flex; flex-wrap: wrap; gap: 12px 20px; }
.b3-links a {
  padding: 8px 16px;
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--b3-muted);
}
.b3-links a:hover { color: #fff; border-color: #555; }

/* Download / Platform */
.b3-platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.b3-platform-card {
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  padding: 32px 24px;
  text-align: center;
  transition: border-color .2s;
}
.b3-platform-card:hover { border-color: #555; }
.b3-platform-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: #fff;
  color: #000;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.b3-platform-card__title { margin: 0 0 12px; font-size: 20px; }
.b3-platform-card p { margin: 0 0 24px; font-size: 14px; color: var(--b3-muted); min-height: 44px; }

.b3-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.b3-stats-row strong {
  display: block;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
}
.b3-stats-row span { font-size: 14px; color: var(--b3-muted); }

.b3-download-block__grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.b3-pill-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.b3-pill {
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
}
.b3-pill:hover { border-color: #666; background: var(--b3-card-2); }
.b3-qr { text-align: center; }
.b3-qr__box {
  width: 180px;
  height: 180px;
  margin: 0 auto 12px;
  border-radius: 12px;
  background: #fff;
  border: 8px solid var(--b3-border);
  background-image:
    linear-gradient(90deg, #000 2px, transparent 2px),
    linear-gradient(#000 2px, transparent 2px);
  background-size: 14px 14px;
  opacity: 0.85;
}
.b3-qr p { margin: 0; color: var(--b3-muted); font-size: 14px; }

.b3-tips {
  padding: 28px;
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
}
.b3-tips ul { margin: 12px 0 0; padding-left: 20px; color: var(--b3-muted); }
.b3-tips li { margin-bottom: 8px; }

.b3-cta {
  background: #fff;
  color: #000;
  padding: 56px 0;
}
.b3-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.b3-cta__title { margin: 0 0 8px; font-size: clamp(22px, 3vw, 30px); font-weight: 800; }
.b3-cta p { margin: 0; color: #444; font-size: 15px; }
.b3-cta .b3-btn--white { background: #000; color: #fff; border-color: #000; }

/* Inner pages */
.b3-page-hero {
  padding: 48px 0;
  border-bottom: 1px solid var(--b3-border);
  background: var(--b3-bg-2);
}
.b3-page-hero__title {
  margin: 0;
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
}
.b3-page-hero__desc { margin: 10px 0 0; color: var(--b3-muted); }

.b3-breadcrumb { font-size: 14px; color: var(--b3-dim); margin-bottom: 24px; }
.b3-breadcrumb a { color: var(--b3-muted); }

.b3-list { display: flex; flex-direction: column; gap: 20px; }
.b3-list__item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  padding: 20px;
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
}
.b3-list__thumb {
  display: block;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: #111;
}
.b3-list__thumb img { width: 100%; height: 100%; object-fit: cover; }
.b3-list__title { margin: 0 0 8px; font-size: 20px; font-weight: 700; }
.b3-list__title a:hover { text-decoration: underline; }
.b3-list__desc { margin: 10px 0 0; font-size: 14px; color: var(--b3-muted); }

.b3-pagination { margin-top: 32px; text-align: center; }
.b3-pagination a,
.b3-pagination span {
  display: inline-block;
  padding: 8px 14px;
  margin: 0 4px;
  border-radius: 8px;
  border: 1px solid var(--b3-border);
  font-size: 14px;
  color: var(--b3-muted);
}
.b3-pagination a:hover { color: #fff; border-color: #666; }

.b3-empty {
  text-align: center;
  padding: 60px 24px;
  color: var(--b3-muted);
  background: var(--b3-card);
  border: 1px dashed var(--b3-border);
  border-radius: var(--b3-radius);
}
.b3-empty__title { font-size: 48px; font-weight: 800; margin: 0 0 12px; color: #fff; }
.b3-empty__text { margin: 0 0 20px; }
.b3-empty__actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }

.b3-article {
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  padding: 32px;
}
.b3-article__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.35;
}
.b3-article__meta {
  font-size: 14px;
  color: var(--b3-dim);
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}
.b3-article__intro {
  padding: 14px 18px;
  background: var(--b3-bg-2);
  border-left: 3px solid #fff;
  border-radius: 0 8px 8px 0;
  color: var(--b3-muted);
  margin-bottom: 24px;
  font-size: 15px;
}
.b3-article__content {
  font-size: 16px;
  line-height: 1.85;
  color: #e5e5e5;
}
.b3-article__content h2,
.b3-article__content h3 { margin: 1.6em 0 0.8em; color: #fff; }
.b3-article__content p { margin: 0 0 1em; }
.b3-article__content img { border-radius: 10px; margin: 16px 0; }
.b3-article__content a { color: #fff; text-decoration: underline; }
.b3-article__source {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--b3-border);
  font-size: 13px;
  color: var(--b3-dim);
  word-break: break-all;
}

.b3-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.b3-prevnext a {
  display: block;
  padding: 16px;
  background: var(--b3-card);
  border: 1px solid var(--b3-border);
  border-radius: var(--b3-radius);
  color: inherit;
}
.b3-prevnext a:hover { border-color: #555; }
.b3-prevnext span { display: block; font-size: 12px; color: var(--b3-dim); margin-bottom: 4px; }
.b3-prevnext div { font-size: 14px; font-weight: 600; }

.b3-card--mini a { display: block; padding: 16px; }
.b3-card--mini .b3-card__title { font-size: 15px; }

/* Footer */
.b3-footer {
  border-top: 1px solid var(--b3-border);
  padding: 56px 0 28px;
  background: var(--b3-bg-2);
  font-size: 14px;
}
.b3-footer__top {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 48px;
  margin-bottom: 40px;
}
.b3-footer__brand p { margin: 12px 0 16px; color: var(--b3-muted); font-size: 14px; max-width: 320px; line-height: 1.65; }
.b3-social { display: flex; gap: 12px; }
.b3-social a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--b3-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--b3-muted);
  font-size: 14px;
}
.b3-social a:hover { color: #fff; border-color: #666; }
.b3-footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.b3-footer__title { color: #fff; font-weight: 700; margin-bottom: 14px; font-size: 15px; }
.b3-footer__col a {
  display: block;
  color: var(--b3-muted);
  margin-bottom: 10px;
  font-size: 14px;
}
.b3-footer__col a:hover { color: #fff; }
.b3-footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--b3-border);
  text-align: center;
}
.b3-footer__bottom p { margin: 0 0 8px; font-size: 13px; color: var(--b3-dim); }
.b3-footer__bottom a { color: var(--b3-muted); }
.b3-footer__meta { font-size: 12px; color: #525252; }

/* Responsive */
@media (max-width: 1024px) {
  .b3-hero__grid { grid-template-columns: 1fr; }
  .b3-hero__visual { order: -1; }
  .b3-hero__phone { width: 180px; height: 360px; }
  .b3-grid-4, .b3-grid-3, .b3-news-grid, .b3-mosaic, .b3-platform-grid { grid-template-columns: repeat(2, 1fr); }
  .b3-split { grid-template-columns: 1fr; }
  .b3-split--reverse .b3-split__visual { order: 0; }
  .b3-hot-grid { grid-template-columns: 1fr; }
  .b3-download-block__grid { grid-template-columns: 1fr; }
  .b3-stats-row { grid-template-columns: repeat(2, 1fr); }
  .b3-footer__top { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .b3-nav-toggle { display: flex; }
  .b3-header__actions { display: none; }
  .b3-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: #000;
    border-bottom: 1px solid var(--b3-border);
    padding: 12px 16px 20px;
  }
  .b3-nav.is-open { display: flex; }
  .b3-nav a { width: 100%; padding: 12px 14px; }
  .b3-grid-4, .b3-grid-3, .b3-news-grid, .b3-mosaic, .b3-platform-grid, .b3-stats-row { grid-template-columns: 1fr; }
  .b3-list__item { grid-template-columns: 1fr; }
  .b3-prevnext { grid-template-columns: 1fr; }
  .b3-footer__links { grid-template-columns: repeat(2, 1fr); }
  .b3-cta__inner { flex-direction: column; text-align: center; }
  .b3-hero__actions .b3-btn { flex: 1; min-width: 140px; }
  .b3-dual-icons { flex-direction: column; align-items: center; }
}