:root {
  --b2-green: #00c076;
  --b2-green-dark: #00a866;
  --b2-green-glow: rgba(0, 192, 118, 0.35);
  --b2-bg: #0a0e12;
  --b2-bg-alt: #111820;
  --b2-surface: #161d27;
  --b2-surface-2: #1c2532;
  --b2-border: rgba(255, 255, 255, 0.08);
  --b2-text: #e8edf2;
  --b2-muted: #8b9aab;
  --b2-radius: 12px;
  --b2-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
  --b2-max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--b2-bg);
  color: var(--b2-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--b2-green); text-decoration: none; }
a:hover { color: #2dd88a; }
img { max-width: 100%; height: auto; display: block; }

.b2-skip { position: absolute; left: -9999px; }
.b2-skip:focus {
  left: 16px; top: 16px; z-index: 9999;
  padding: 8px 16px; background: var(--b2-green); color: #000; border-radius: 8px;
}

.b2-container {
  width: 100%;
  max-width: var(--b2-max);
  margin: 0 auto;
  padding: 0 24px;
}
.b2-container--narrow { max-width: 860px; }

.b2-accent { color: var(--b2-green); }

/* Header */
.b2-header {
  position: sticky;
  top: 0;
  z-index: 300;
  background: rgba(10, 14, 18, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--b2-border);
}
.b2-header__inner {
  display: flex;
  align-items: center;
  gap: 20px;
  min-height: 68px;
}
.b2-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--b2-text);
  flex-shrink: 0;
}
.b2-brand:hover { color: var(--b2-green); }
.b2-brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--b2-green) 0%, #00e88f 100%);
  box-shadow: 0 0 20px var(--b2-green-glow);
}
.b2-brand__text { font-size: 16px; font-weight: 800; }

.b2-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
  flex-wrap: wrap;
}
.b2-nav a {
  padding: 8px 14px;
  border-radius: 8px;
  color: var(--b2-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color .2s, background .2s;
}
.b2-nav a:hover { color: var(--b2-text); background: rgba(255, 255, 255, 0.05); }

.b2-header__actions { display: flex; gap: 8px; flex-shrink: 0; }

.b2-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  background: none;
  border: none;
  cursor: pointer;
  margin-left: auto;
}
.b2-nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--b2-text);
  border-radius: 2px;
}

/* Buttons */
.b2-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 22px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .2s, border-color .2s, transform .15s;
}
.b2-btn--sm { padding: 7px 16px; font-size: 13px; }
.b2-btn--lg { padding: 14px 28px; font-size: 15px; }
.b2-btn--primary {
  background: var(--b2-green);
  color: #000;
  border-color: var(--b2-green);
}
.b2-btn--primary:hover {
  background: var(--b2-green-dark);
  border-color: var(--b2-green-dark);
  color: #000;
}
.b2-btn--outline {
  background: transparent;
  color: var(--b2-green);
  border-color: var(--b2-green);
}
.b2-btn--outline:hover {
  background: rgba(0, 192, 118, 0.1);
  color: #2dd88a;
}
.b2-btn--ghost {
  background: transparent;
  color: var(--b2-muted);
  border-color: var(--b2-border);
}
.b2-btn--ghost:hover { color: var(--b2-text); border-color: rgba(255,255,255,0.2); }
.b2-btn--white {
  background: #fff;
  color: #000;
  border-color: #fff;
}
.b2-btn--white:hover { background: #e8edf2; }

/* Hero */
.b2-hero {
  padding: 72px 0 80px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse 80% 60% at 70% 40%, rgba(0, 192, 118, 0.12) 0%, transparent 60%);
}
.b2-hero__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.b2-hero__title {
  margin: 0 0 16px;
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
}
.b2-hero__tagline {
  margin: 0 0 12px;
  font-size: clamp(18px, 2.5vw, 22px);
  color: var(--b2-green);
  font-weight: 600;
}
.b2-hero__lead {
  margin: 0 0 28px;
  color: var(--b2-muted);
  font-size: 16px;
  max-width: 520px;
}
.b2-hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

.b2-orbs {
  position: relative;
  width: 100%;
  height: 360px;
}
.b2-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
}
.b2-orb--1 {
  width: 220px; height: 220px;
  top: 20%; right: 10%;
  background: radial-gradient(circle, rgba(0, 192, 118, 0.6) 0%, rgba(0, 192, 118, 0) 70%);
  animation: b2-float 6s ease-in-out infinite;
}
.b2-orb--2 {
  width: 160px; height: 160px;
  top: 50%; right: 35%;
  background: radial-gradient(circle, rgba(0, 232, 143, 0.45) 0%, transparent 70%);
  animation: b2-float 8s ease-in-out infinite reverse;
}
.b2-orb--3 {
  width: 100px; height: 100px;
  top: 15%; right: 45%;
  background: radial-gradient(circle, rgba(0, 192, 118, 0.35) 0%, transparent 70%);
  animation: b2-float 5s ease-in-out infinite 1s;
}
@keyframes b2-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-16px); }
}

/* Sections */
.b2-section { padding: 72px 0; }
.b2-section--alt { background: var(--b2-bg-alt); }
.b2-section__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.b2-section__head--center {
  flex-direction: column;
  align-items: center;
  text-align: center;
}
.b2-section__title {
  margin: 0;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
}
.b2-section__desc {
  margin: 10px 0 0;
  color: var(--b2-muted);
  font-size: 15px;
  max-width: 640px;
}
.b2-section__more {
  font-size: 14px;
  color: var(--b2-green);
  white-space: nowrap;
}

/* Quad cards */
.b2-quad {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.b2-quad__item {
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  padding: 28px 22px;
  transition: border-color .2s, transform .2s;
}
.b2-quad__item:hover {
  border-color: rgba(0, 192, 118, 0.35);
  transform: translateY(-3px);
}
.b2-quad__icon {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  color: var(--b2-green);
  margin-bottom: 12px;
}
.b2-quad__item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
}
.b2-quad__item p {
  margin: 0;
  font-size: 14px;
  color: var(--b2-muted);
  line-height: 1.6;
}

/* Split sections */
.b2-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.b2-split--reverse .b2-split__text { order: -1; }

.b2-stats-inline {
  display: flex;
  gap: 28px;
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  flex-wrap: wrap;
}
.b2-stats-inline li strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  color: var(--b2-green);
}
.b2-stats-inline li span { font-size: 13px; color: var(--b2-muted); }

.b2-checklist {
  list-style: none;
  padding: 0;
  margin: 0 0 20px;
}
.b2-checklist li {
  position: relative;
  padding-left: 24px;
  margin-bottom: 10px;
  color: var(--b2-muted);
  font-size: 15px;
}
.b2-checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--b2-green);
  font-weight: 700;
}

/* Mock visuals */
.b2-mock {
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.b2-mock--video { flex-direction: column; gap: 20px; }
.b2-mock__bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: rgba(0,0,0,0.3);
}
.b2-mock__bar span {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
}
.b2-mock__play {
  width: 64px; height: 64px;
  border-radius: 50%;
  background: rgba(0, 192, 118, 0.2);
  border: 2px solid var(--b2-green);
  position: relative;
}
.b2-mock__play::after {
  content: "";
  position: absolute;
  top: 50%; left: 55%;
  transform: translate(-50%, -50%);
  border: 10px solid transparent;
  border-left: 16px solid var(--b2-green);
}

.b2-chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  height: 140px;
  padding: 20px;
}
.b2-chart-bars span {
  flex: 1;
  background: linear-gradient(to top, var(--b2-green-dark), var(--b2-green));
  border-radius: 4px 4px 0 0;
  opacity: 0.8;
}
.b2-chart-bars span:nth-child(1) { height: 45%; }
.b2-chart-bars span:nth-child(2) { height: 70%; }
.b2-chart-bars span:nth-child(3) { height: 55%; }
.b2-chart-bars span:nth-child(4) { height: 85%; }
.b2-chart-bars span:nth-child(5) { height: 60%; }

.b2-pulse-line {
  width: 80%;
  height: 80px;
  background: linear-gradient(90deg, transparent, var(--b2-green), transparent);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 40'%3E%3Cpolyline points='0,20 30,20 40,8 55,32 70,12 90,28 110,10 130,25 150,15 170,22 200,18' fill='none' stroke='white' stroke-width='3'/%3E%3C/svg%3E");
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  opacity: 0.7;
}

.b2-shield {
  width: 100px; height: 110px;
  background: linear-gradient(135deg, rgba(0,192,118,0.3), rgba(0,192,118,0.05));
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%);
  border: 2px solid var(--b2-green);
}

/* CTA band */
.b2-cta-band {
  padding: 56px 0;
  background: linear-gradient(135deg, rgba(0, 192, 118, 0.15) 0%, rgba(0, 192, 118, 0.05) 100%);
  border-top: 1px solid rgba(0, 192, 118, 0.2);
  border-bottom: 1px solid rgba(0, 192, 118, 0.2);
}
.b2-cta-band__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.b2-cta-band__title {
  margin: 0 0 8px;
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 800;
}
.b2-cta-band p { margin: 0; color: var(--b2-muted); }
.b2-cta-band__actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* FAQ */
.b2-faq { display: flex; flex-direction: column; gap: 12px; }
.b2-faq__item {
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  overflow: hidden;
}
.b2-faq__q {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  background: none;
  border: none;
  color: var(--b2-text);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
}
.b2-faq__q::after {
  content: "+";
  font-size: 20px;
  color: var(--b2-green);
  flex-shrink: 0;
  margin-left: 16px;
  transition: transform .2s;
}
.b2-faq__item.is-open .b2-faq__q::after { content: "−"; }
.b2-faq__a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .3s ease;
}
.b2-faq__item.is-open .b2-faq__a { max-height: 200px; }
.b2-faq__a p {
  margin: 0;
  padding: 0 22px 18px;
  color: var(--b2-muted);
  font-size: 14px;
  line-height: 1.7;
}

/* Hot / News */
.b2-hot-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
  align-items: start;
}
.b2-card {
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  overflow: hidden;
  transition: border-color .2s, transform .2s;
}
.b2-card:hover { border-color: rgba(0, 192, 118, 0.3); transform: translateY(-2px); }
.b2-card a { color: inherit; display: block; }
.b2-card--featured .b2-card__media { aspect-ratio: 16/9; overflow: hidden; }
.b2-card--featured .b2-card__media img { width: 100%; height: 100%; object-fit: cover; }
.b2-card__body { padding: 20px; }
.b2-badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 6px;
  background: rgba(0, 192, 118, 0.15);
  color: var(--b2-green);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 10px;
}
.b2-card__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
}
.b2-card__desc {
  margin: 0 0 12px;
  color: var(--b2-muted);
  font-size: 14px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.b2-card__meta {
  font-size: 13px;
  color: var(--b2-muted);
  display: flex;
  gap: 16px;
}

.b2-hot-side { display: flex; flex-direction: column; gap: 12px; }
.b2-hot-side__item {
  display: block;
  padding: 16px 18px;
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  transition: border-color .2s;
}
.b2-hot-side__item:hover { border-color: rgba(0, 192, 118, 0.35); }
.b2-hot-side__item h3 { margin: 0 0 6px; font-size: 15px; font-weight: 700; }
.b2-hot-side__item time { font-size: 12px; color: var(--b2-muted); }

.b2-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.b2-news {
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  overflow: hidden;
  transition: transform .2s, border-color .2s;
}
.b2-news:hover { transform: translateY(-3px); border-color: rgba(0, 192, 118, 0.25); }
.b2-news__link { display: block; color: inherit; }
.b2-news__thumb { aspect-ratio: 16/10; overflow: hidden; background: var(--b2-surface-2); }
.b2-news__thumb img { width: 100%; height: 100%; object-fit: cover; }
.b2-news__body { padding: 18px; }
.b2-news__title {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.b2-news__desc {
  margin: 0 0 10px;
  font-size: 13px;
  color: var(--b2-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Strip list (rand) */
.b2-strip-list { display: flex; flex-direction: column; gap: 14px; }
.b2-strip {
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  overflow: hidden;
  transition: border-color .2s;
}
.b2-strip:hover { border-color: rgba(0, 192, 118, 0.3); }
.b2-strip__link {
  display: grid;
  grid-template-columns: 120px 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 14px;
  color: inherit;
}
.b2-strip__thumb {
  width: 120px;
  height: 80px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--b2-surface-2);
}
.b2-strip__thumb img { width: 100%; height: 100%; object-fit: cover; }
.b2-strip__date { font-size: 12px; color: var(--b2-muted); }
.b2-strip__title { margin: 4px 0; font-size: 16px; font-weight: 700; }
.b2-strip__desc {
  margin: 0;
  font-size: 13px;
  color: var(--b2-muted);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.b2-strip__arrow { color: var(--b2-green); font-size: 20px; padding-right: 8px; }

.b2-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
}
.b2-links a {
  padding: 8px 16px;
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: 8px;
  font-size: 14px;
  color: var(--b2-muted);
}
.b2-links a:hover { border-color: var(--b2-green); color: var(--b2-green); }

/* Page hero / list / article */
.b2-page-hero {
  padding: 48px 0;
  background: var(--b2-bg-alt);
  border-bottom: 1px solid var(--b2-border);
}
.b2-page-hero__title {
  margin: 0;
  font-size: clamp(26px, 3vw, 34px);
  font-weight: 800;
}
.b2-page-hero__desc { margin: 10px 0 0; color: var(--b2-muted); }

.b2-breadcrumb {
  font-size: 14px;
  color: var(--b2-muted);
  margin-bottom: 24px;
}
.b2-breadcrumb a { color: var(--b2-green); }

.b2-list { display: flex; flex-direction: column; gap: 20px; }
.b2-list__item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 20px;
  padding: 20px;
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
}
.b2-list__thumb {
  display: block;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 16/10;
  background: var(--b2-surface-2);
}
.b2-list__thumb img { width: 100%; height: 100%; object-fit: cover; }
.b2-list__title { margin: 0 0 8px; font-size: 20px; font-weight: 800; }
.b2-list__title a { color: inherit; }
.b2-list__title a:hover { color: var(--b2-green); }
.b2-list__desc { margin: 10px 0 0; color: var(--b2-muted); font-size: 14px; }

.b2-pagination { margin-top: 32px; text-align: center; }
.b2-pagination a,
.b2-pagination span {
  display: inline-block;
  padding: 8px 14px;
  margin: 0 4px;
  border-radius: 8px;
  border: 1px solid var(--b2-border);
  font-size: 14px;
  color: var(--b2-muted);
}
.b2-pagination a:hover { border-color: var(--b2-green); color: var(--b2-green); }

.b2-empty {
  text-align: center;
  padding: 60px 24px;
  color: var(--b2-muted);
  background: var(--b2-surface);
  border: 1px dashed var(--b2-border);
  border-radius: var(--b2-radius);
}
.b2-empty__title { font-size: 48px; font-weight: 800; margin: 0 0 12px; color: var(--b2-green); }
.b2-empty__text { margin: 0 0 20px; }

.b2-article {
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  padding: 32px;
}
.b2-article__title {
  margin: 0 0 12px;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 800;
  line-height: 1.35;
}
.b2-article__meta {
  font-size: 14px;
  color: var(--b2-muted);
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
}
.b2-article__intro {
  padding: 14px 18px;
  background: var(--b2-bg-alt);
  border-left: 4px solid var(--b2-green);
  border-radius: 0 8px 8px 0;
  color: var(--b2-muted);
  margin-bottom: 24px;
  font-size: 15px;
}
.b2-article__content {
  font-size: 16px;
  line-height: 1.85;
  color: var(--b2-text);
}
.b2-article__content h2,
.b2-article__content h3 { margin: 1.6em 0 0.8em; color: var(--b2-text); }
.b2-article__content p { margin: 0 0 1em; }
.b2-article__content img { border-radius: 10px; margin: 16px 0; }
.b2-article__content a { color: var(--b2-green); text-decoration: underline; }
.b2-article__source {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--b2-border);
  font-size: 13px;
  color: var(--b2-muted);
  word-break: break-all;
}

.b2-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.b2-prevnext a {
  display: block;
  padding: 16px;
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  color: inherit;
}
.b2-prevnext a:hover { border-color: var(--b2-green); }
.b2-prevnext span { display: block; font-size: 12px; color: var(--b2-muted); margin-bottom: 4px; }
.b2-prevnext div { font-size: 14px; font-weight: 600; }

.b2-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.b2-card--mini .b2-card__title { font-size: 15px; }
.b2-card--mini a { display: block; padding: 16px; }

/* Download page */
.b2-platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.b2-platform-card {
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  border-radius: var(--b2-radius);
  padding: 32px 28px;
  text-align: center;
  transition: border-color .2s, transform .2s;
}
.b2-platform-card:hover {
  border-color: rgba(0, 192, 118, 0.35);
  transform: translateY(-4px);
}
.b2-platform-card__icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: var(--b2-green);
  color: #000;
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.b2-platform-card__title {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 800;
}
.b2-platform-card p {
  margin: 0 0 24px;
  color: var(--b2-muted);
  font-size: 14px;
  min-height: 66px;
}

.b2-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.b2-stats-row strong {
  display: block;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  color: var(--b2-green);
}
.b2-stats-row span { font-size: 14px; color: var(--b2-muted); }

.b2-download-block__grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
}
.b2-pill-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.b2-pill {
  padding: 10px 20px;
  border-radius: 999px;
  background: var(--b2-surface);
  border: 1px solid var(--b2-border);
  color: var(--b2-text);
  font-size: 14px;
  font-weight: 600;
  transition: border-color .2s, background .2s;
}
.b2-pill:hover { border-color: var(--b2-green); color: var(--b2-green); }

.b2-qr { text-align: center; }
.b2-qr__box {
  width: 180px;
  height: 180px;
  margin: 0 auto 12px;
  border-radius: 12px;
  background: #fff;
  border: 8px solid var(--b2-border);
  background-image:
    linear-gradient(90deg, #0a0e12 2px, transparent 2px),
    linear-gradient(#0a0e12 2px, transparent 2px);
  background-size: 16px 16px;
  opacity: 0.9;
}
.b2-qr p { margin: 0; color: var(--b2-muted); font-size: 14px; }

.b2-tips {
  padding: 28px;
  background: var(--b2-surface);
  border-radius: var(--b2-radius);
  border: 1px solid var(--b2-border);
}
.b2-tips ul { margin: 12px 0 0; padding-left: 20px; color: var(--b2-muted); }
.b2-tips li { margin-bottom: 8px; }

.b2-cta {
  background: linear-gradient(135deg, rgba(0, 192, 118, 0.2) 0%, rgba(0, 192, 118, 0.05) 100%);
  padding: 56px 0;
  border-top: 1px solid rgba(0, 192, 118, 0.15);
}
.b2-cta__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.b2-cta__title {
  margin: 0 0 8px;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
}

/* Footer */
.b2-footer {
  background: #060910;
  color: var(--b2-muted);
  padding: 56px 0 28px;
  font-size: 14px;
  border-top: 1px solid var(--b2-border);
}
.b2-footer__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 40px;
}
.b2-footer__title {
  color: var(--b2-text);
  font-weight: 700;
  margin-bottom: 14px;
  font-size: 15px;
}
.b2-footer__col a {
  display: block;
  color: var(--b2-muted);
  margin-bottom: 10px;
  font-size: 14px;
}
.b2-footer__col a:hover { color: var(--b2-green); }
.b2-footer__bottom {
  padding-top: 24px;
  border-top: 1px solid var(--b2-border);
  text-align: center;
}
.b2-footer__bottom p { margin: 0 0 8px; font-size: 13px; }
.b2-footer__bottom a { color: var(--b2-muted); }
.b2-footer__meta { color: #64748b; font-size: 12px; }
.b2-footer__disclaimer {
  margin-top: 12px;
  font-size: 11px;
  line-height: 1.7;
  color: #475569;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

/* Responsive */
@media (max-width: 1024px) {
  .b2-hero__grid { grid-template-columns: 1fr; }
  .b2-hero__visual { display: none; }
  .b2-quad,
  .b2-platform-grid,
  .b2-news-grid,
  .b2-grid-4 { grid-template-columns: repeat(2, 1fr); }
  .b2-hot-grid,
  .b2-split,
  .b2-download-block__grid { grid-template-columns: 1fr; }
  .b2-split--reverse .b2-split__text { order: 0; }
  .b2-stats-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .b2-nav-toggle { display: flex; }
  .b2-header__actions { display: none; }
  .b2-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--b2-bg);
    border-bottom: 1px solid var(--b2-border);
    padding: 12px 16px 20px;
    box-shadow: var(--b2-shadow);
  }
  .b2-nav.is-open { display: flex; }
  .b2-nav a { width: 100%; padding: 12px 14px; }
  .b2-quad,
  .b2-platform-grid,
  .b2-news-grid,
  .b2-grid-4,
  .b2-stats-row { grid-template-columns: 1fr; }
  .b2-list__item { grid-template-columns: 1fr; }
  .b2-strip__link { grid-template-columns: 90px 1fr; }
  .b2-strip__arrow { display: none; }
  .b2-prevnext { grid-template-columns: 1fr; }
  .b2-footer__grid { grid-template-columns: repeat(2, 1fr); }
  .b2-cta-band__inner,
  .b2-cta__inner { flex-direction: column; text-align: center; }
  .b2-hero__actions .b2-btn { flex: 1; min-width: 140px; }
}