/* ============================================================
   BoAgent · Enterprise — 白底企业风
   参考：IBM / Stripe / ServiceNow / Atlassian
   - 白底 / 深海军蓝文字 / 单一深蓝主色
   - 大量留白，结构清晰，无玻璃/极光/霓虹
   ============================================================ */

.boagent-landing {
  --bg: #ffffff;
  --bg-alt: #f6f8fb;
  --bg-soft: #fafbfc;
  --surface: #ffffff;
  --border: #e5e7eb;
  --border-strong: #d1d5db;

  --text: #0a1736;
  --text-strong: #050d24;
  --text-dim: #4b5970;
  --text-muted: #6b7280;

  --primary: #1e4ed8;
  --primary-hover: #1d3fb8;
  --primary-soft: #eef2ff;
  --primary-border: #c7d2fe;

  --accent: #0891b2;
  --success: #16a34a;
  --warn: #d97706;
  --danger: #dc2626;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.08);
  --shadow-xl: 0 24px 56px rgba(15, 23, 42, 0.12);

  --radius-sm: 6px;
  --radius: 10px;
  --radius-lg: 14px;

  --max: 1200px;
  --font-cn: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB',
    'Microsoft YaHei', 'Source Han Sans CN', 'Noto Sans CJK SC', Roboto, Helvetica, Arial, sans-serif;
}

/* 隔离作用域：覆盖 Tailwind preflight */
.boagent-landing,
.boagent-landing *,
.boagent-landing *::before,
.boagent-landing *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
.boagent-landing {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  display: block;
  font-family: var(--font-cn) !important;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
}
.boagent-landing img { max-width: 100%; height: auto; display: block; }
.boagent-landing a { color: inherit; text-decoration: none; }
.boagent-landing h1, .boagent-landing h2, .boagent-landing h3,
.boagent-landing h4, .boagent-landing h5, .boagent-landing h6 {
  font-size: revert;
  font-weight: revert;
}
.boagent-landing ul, .boagent-landing ol {
  list-style: revert;
}
.boagent-landing button {
  font-family: inherit;
  cursor: pointer;
}
.boagent-landing input, .boagent-landing select, .boagent-landing textarea {
  font-family: inherit;
}

.boagent-landing .container { max-width: var(--max); margin: 0 auto; padding: 0 32px; }

/* ============================================================
   Topbar (announcement strip)
   ============================================================ */
.boagent-landing .topbar {
  background: var(--text);
  color: #fff;
  font-size: 13px;
}
.boagent-landing .topbar-inner {
  display: flex; align-items: center; justify-content: center;
  gap: 16px;
  padding: 10px 32px;
}
.boagent-landing .topbar a {
  color: #fff;
  font-weight: 600;
  border-bottom: 1px solid rgba(255, 255, 255, 0.4);
  padding-bottom: 1px;
}
.topbar a:hover { border-bottom-color: #fff; }

/* ============================================================
   Nav
   ============================================================ */
.boagent-landing .nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.boagent-landing .nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: auto;
  min-height: 68px;
  gap: 32px;
  position: relative;
  flex-wrap: wrap;
  padding: 12px 32px;
}
.boagent-landing .nav-brand-row {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}
.brand { display: inline-flex; align-items: center; font-weight: 700; }
.boagent-landing .brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-left: 12px;
  text-align: center;
}
.boagent-landing .brand-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-strong);
  line-height: 1.3;
}
.boagent-landing .brand-desc {
  font-size: 11px;
  font-weight: 400;
  color: var(--text-muted);
  line-height: 1.3;
}
.boagent-landing .brand-logo {
  height: 32px;
  width: auto;
}
.boagent-landing .brand-logo-inverse {
  height: 32px;
  width: auto;
}
.nav-links { display: flex; align-items: center; gap: 32px; flex: 1; justify-content: center; }
.boagent-landing .nav-links a {
  color: var(--text-dim);
  font-size: 14.5px;
  font-weight: 500;
  transition: color .15s ease;
}
.nav-links a:hover { color: var(--text); }
/* ---- Dropdown ---- */
.boagent-landing .nav-dropdown { position: relative; }
.boagent-landing .nav-dropdown-trigger {
  color: var(--text-dim);
  font-size: 14.5px;
  font-weight: 500;
  cursor: pointer;
  transition: color .15s ease;
}
.boagent-landing .nav-dropdown-trigger:hover { color: var(--text); }
.boagent-landing .nav-dropdown-menu {
  display: none;
  visibility: hidden;
  opacity: 0;
  position: absolute; top: 100%; left: 50%; transform: translateX(-50%);
  background: #fff; border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-lg);
  min-width: 200px; padding: 8px 0; z-index: 100;
  padding-top: 12px;
  transition: visibility 0.2s, opacity 0.2s;
}
.boagent-landing .nav-dropdown:hover .nav-dropdown-menu { display: block; visibility: visible; opacity: 1; }
.boagent-landing .nav-dropdown-menu a {
  display: block; padding: 10px 20px;
  font-size: 14px; color: var(--text-dim);
  transition: background .1s, color .1s;
}
.boagent-landing .nav-dropdown-menu a:hover { background: var(--primary-soft); color: var(--primary); }
.boagent-landing .menu-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 4px;
  vertical-align: middle;
  margin-left: 2px;
  letter-spacing: 0.02em;
}
.boagent-landing .menu-tag { background: rgb(59, 130, 246); color: #fff; }
.nav-cta { display: flex; align-items: center; gap: 18px; }
.boagent-landing .link-muted {
  color: var(--text-dim);
  font-size: 14px;
  font-weight: 500;
}
.link-muted:hover { color: var(--text); }

.boagent-landing .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 9px 18px;
  border-radius: var(--radius);
  font-weight: 600; font-size: 14.5px;
  transition: background .15s ease, border-color .15s ease, color .15s ease, box-shadow .15s ease, transform .1s ease;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
}
.btn-lg { padding: 13px 26px; font-size: 15px; }
.boagent-landing .btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--primary-hover); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: translateY(0.5px); }
.boagent-landing .btn-outline {
  background: #fff;
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-outline:hover { border-color: var(--text); }

/* ============================================================
   Hero — 图片展示
   ============================================================ */
.boagent-landing .hero-image {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px;
}
.boagent-landing .hero-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}

@media (max-width: 720px) {
  .boagent-landing .hero-image {
    padding: 10px;
  }
  .boagent-landing .hero-image img {
    border-radius: 8px;
  }
}

/* ============================================================
   Hero — 拆分式（左文右图），企业标准布局 (已废弃)
   ============================================================ */
.boagent-landing .hero {
  padding: 84px 0 96px;
  background: linear-gradient(180deg, #f6f9ff 0%, #ffffff 100%);
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.boagent-landing .hero::before {
  content: '';
  position: absolute;
  top: -200px; left: -200px;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(30, 78, 216, 0.12), transparent 60%);
  pointer-events: none;
  animation: orbDrift 18s ease-in-out infinite alternate;
}
.boagent-landing .hero::after {
  content: '';
  position: absolute;
  bottom: -300px; right: -200px;
  width: 800px; height: 800px;
  background: radial-gradient(circle, rgba(8, 145, 178, 0.08), transparent 60%);
  pointer-events: none;
  animation: orbDrift 22s ease-in-out -8s infinite alternate;
}
@keyframes orbDrift {
  0%   { transform: translate(0, 0) scale(1); }
  100% { transform: translate(60px, 40px) scale(1.1); }
}
.hero .container { position: relative; z-index: 1; }

/* Hero entrance animation */
.boagent-landing .hero-copy > * {
  opacity: 0;
  transform: translateY(20px);
  animation: heroFadeUp .8s cubic-bezier(.22,.61,.36,1) forwards;
}
.hero-copy > *:nth-child(1) { animation-delay: 0.05s; }
.hero-copy > *:nth-child(2) { animation-delay: 0.15s; }
.hero-copy > *:nth-child(3) { animation-delay: 0.25s; }
.hero-copy > *:nth-child(4) { animation-delay: 0.35s; }
.hero-copy > *:nth-child(5) { animation-delay: 0.45s; }
.boagent-landing .hero-visual {
  opacity: 0;
  animation: heroFadeIn 1s 0.4s cubic-bezier(.22,.61,.36,1) forwards;
}
.boagent-landing .hero-video-wrap {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0,0,0,.12), 0 0 0 1px rgba(0,0,0,.06);
  cursor: zoom-in;
}
.boagent-landing .hero-video-wrap video {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
}
@keyframes heroFadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: none; }
}
@keyframes heroFadeIn {
  from { opacity: 0; transform: translateY(30px) scale(.97); }
  to   { opacity: 1; transform: none; }
}

/* Preview gentle float */
.preview { animation: previewFloat 6s ease-in-out 1.4s infinite; }
@keyframes previewFloat {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}
.boagent-landing .hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 64px;
  align-items: center;
}
.boagent-landing .eyebrow {
  display: inline-block;
  padding: 5px 14px;
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  color: var(--primary);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 28px;
  letter-spacing: 0.1px;
}
.boagent-landing .hero-title {
  font-size: clamp(36px, 4.4vw, 60px);
  line-height: 1.12;
  letter-spacing: -1.2px;
  font-weight: 700;
  color: var(--text-strong);
  margin: 0 0 24px;
  text-wrap: balance;
}
.boagent-landing .hero-lede {
  color: var(--text-dim);
  font-size: 17px;
  line-height: 1.7;
  margin: 0 0 36px;
  max-width: 580px;
}
.boagent-landing .hero-cta {
  display: flex; gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}
.boagent-landing .hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
  max-width: 580px;
}
.boagent-landing .hero-meta > div b {
  display: block;
  font-size: 24px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -0.3px;
  margin-bottom: 4px;
}
.boagent-landing .hero-meta > div span {
  display: block;
  color: var(--text-muted);
  font-size: 12.5px;
  line-height: 1.45;
}

/* Hero Features Grid (new 4-card layout) */
.boagent-landing .hero-features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 32px;
  max-width: 580px;
}
.boagent-landing .hero-feature {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 20px;
  transition: border-color .2s, box-shadow .2s;
}
.hero-feature:hover {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-sm);
}
.boagent-landing .hero-feature h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-strong);
  margin: 0 0 8px;
}
.boagent-landing .hero-feature p {
  margin: 0;
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Hero visual — product preview card */
.hero-visual { display: flex; justify-content: center; align-items: center; }
.boagent-landing .preview {
  width: 100%;
  max-width: 560px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}
.boagent-landing .preview-head {
  display: flex; align-items: center; gap: 7px;
  padding: 12px 16px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}
.boagent-landing .preview-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border-strong);
}
.boagent-landing .preview-title {
  margin-left: 12px;
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
}
.boagent-landing .preview-body {
  display: grid;
  grid-template-columns: 150px 1fr;
  min-height: 380px;
}
.boagent-landing .preview-side {
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  padding: 18px 12px;
  display: flex; flex-direction: column; gap: 2px;
}
.boagent-landing .side-section {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 6px 10px 10px;
}
.boagent-landing .side-item {
  font-size: 13px;
  color: var(--text-dim);
  padding: 7px 10px;
  border-radius: 6px;
  cursor: default;
}
.boagent-landing .side-item.active {
  background: #fff;
  color: var(--primary);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.preview-main { padding: 22px 22px; display: flex; flex-direction: column; gap: 18px; }
.kpi-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.boagent-landing .kpi {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.kpi-label { font-size: 11.5px; color: var(--text-muted); font-weight: 500; }
.boagent-landing .kpi-value {
  margin-top: 6px;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -0.5px;
  line-height: 1;
}
.boagent-landing .kpi-value span {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0;
}
.boagent-landing .kpi-trend {
  margin-top: 8px;
  font-size: 11.5px;
  font-weight: 600;
}
.kpi-trend.up { color: var(--success); }

.boagent-landing .chart {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.boagent-landing .chart-head {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--text-dim);
  margin-bottom: 12px;
}
.legend { display: inline-flex; align-items: center; gap: 6px; font-size: 11.5px; color: var(--text-muted); }
.legend i { display: inline-block; width: 8px; height: 8px; border-radius: 2px; background: var(--primary); }
.legend i.b { background: #c7d2fe; margin-left: 6px; }
.chart-bars { display: grid; grid-template-columns: repeat(7, 1fr); gap: 8px; height: 72px; align-items: end; }
.bar { display: flex; flex-direction: column-reverse; gap: 2px; height: 100%; }
.boagent-landing .bar i {
  display: block; background: var(--primary); border-radius: 3px 3px 0 0;
  transform: scaleY(0); transform-origin: bottom;
  transition: transform .9s cubic-bezier(.22,.61,.36,1);
}
.bar i.b { background: #c7d2fe; border-radius: 3px 3px 0 0; }
.chart-bars.animated .bar i { transform: scaleY(1); }
.chart-bars.animated .bar:nth-child(1) i { transition-delay: 0.04s; }
.chart-bars.animated .bar:nth-child(2) i { transition-delay: 0.08s; }
.chart-bars.animated .bar:nth-child(3) i { transition-delay: 0.12s; }
.chart-bars.animated .bar:nth-child(4) i { transition-delay: 0.16s; }
.chart-bars.animated .bar:nth-child(5) i { transition-delay: 0.20s; }
.chart-bars.animated .bar:nth-child(6) i { transition-delay: 0.24s; }
.chart-bars.animated .bar:nth-child(7) i { transition-delay: 0.28s; }
.chart-bars.animated .bar:nth-child(8) i { transition-delay: 0.32s; }
.chart-bars.animated .bar:nth-child(9) i { transition-delay: 0.36s; }
.chart-bars.animated .bar:nth-child(10) i { transition-delay: 0.40s; }
.chart-bars.animated .bar:nth-child(11) i { transition-delay: 0.44s; }
.chart-bars.animated .bar:nth-child(12) i { transition-delay: 0.48s; }
.chart-bars.animated .bar:nth-child(13) i { transition-delay: 0.52s; }
.chart-bars.animated .bar:nth-child(14) i { transition-delay: 0.56s; }

.feed { display: flex; flex-direction: column; gap: 6px; }
.boagent-landing .feed-row {
  display: flex; align-items: center; gap: 10px;
  font-size: 12.5px; color: var(--text-dim);
  padding: 6px 10px;
  background: var(--bg-soft);
  border-radius: 6px;
}
.feed-row span { margin-left: auto; color: var(--text-muted); font-size: 11.5px; }
.feed-row i { width: 6px; height: 6px; border-radius: 50%; }
.feed-row i.ok { background: var(--success); }
.feed-row i.run { background: var(--primary); }
.feed-row i.warn { background: var(--warn); }

/* ============================================================
   Logos band (marquee)
   ============================================================ */
.boagent-landing .logos {
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  padding: 32px 0;
}
.boagent-landing .logos-title {
  color: var(--text-muted); font-size: 12.5px;
  text-align: center; margin: 0 0 22px;
  letter-spacing: 1.5px; text-transform: uppercase;
  font-weight: 600;
}
.boagent-landing .logos-marquee {
  overflow: hidden;
  width: 100%;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
.boagent-landing .logos-track {
  display: flex;
  gap: 48px;
  width: max-content;
  animation: marquee 38s linear infinite;
  align-items: center;
  padding: 4px 0;
}
.boagent-landing .logos-track span {
  color: var(--text-dim); font-size: 14.5px; font-weight: 600;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color .2s ease;
}
.logos-track span:hover { color: var(--text); }
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.logos-marquee:hover .logos-track { animation-play-state: paused; }

/* ============================================================
   Sections
   ============================================================ */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }

.boagent-landing .section-head {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 72px;
}
.boagent-landing .section-eyebrow {
  display: inline-block;
  color: var(--primary);
  font-weight: 600; font-size: 13px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 18px;
  position: relative;
  padding-left: 28px;
}
.boagent-landing .section-eyebrow::before {
  content: '';
  position: absolute;
  left: 0; top: 50%;
  width: 18px; height: 1px;
  background: var(--primary);
}
.boagent-landing .section-name {
  font-size: clamp(38px, 5vw, 60px);
  line-height: 1.05;
  margin: 0 0 18px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -1.5px;
  text-wrap: balance;
}
/* Backwards-compat for sections still using `.kicker`/h2 pattern */
.boagent-landing .kicker {
  display: inline-block;
  color: var(--primary);
  font-weight: 600; font-size: 13px;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.boagent-landing .section h2:not(.section-name) {
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.2;
  margin: 0 0 14px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -0.6px;
  text-wrap: balance;
}
.boagent-landing .section-tagline {
  color: var(--text-dim);
  font-size: clamp(16px, 1.3vw, 19px);
  margin: 0 auto;
  line-height: 1.55;
  max-width: 760px;
}
.boagent-landing .section-tagline b {
  color: var(--text-strong);
  font-weight: 600;
}
.section-sub { color: var(--text-dim); font-size: 16px; margin: 0; }

.grid { display: grid; gap: 20px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Surfaces (multi-channel cards) */
.boagent-landing .surfaces .surface {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color .2s, box-shadow .2s, transform .15s;
}
.surfaces .surface:hover { border-color: var(--border-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.boagent-landing .surface-icon {
  width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-soft);
  border-radius: 10px;
  font-size: 22px;
  margin-bottom: 14px;
}
.surface h4 { margin: 0 0 8px; font-size: 17px; font-weight: 700; color: var(--text-strong); }
.surface p { margin: 0; color: var(--text-dim); font-size: 14px; line-height: 1.65; }

/* Why grid */
.boagent-landing .why-grid .why-item {
  background: transparent;
  padding: 8px 4px;
}
.boagent-landing .why-mark {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  border-radius: 10px;
  font-size: 20px;
  margin-bottom: 14px;
}
.boagent-landing .why-item h4 {
  margin: 0 0 8px; font-size: 17px; font-weight: 700; color: var(--text-strong);
}
.why-item p { margin: 0; color: var(--text-dim); font-size: 14.5px; line-height: 1.7; }

/* Capability cards — name as hero, description as small body, centered */
.boagent-landing .cap-grid .cap {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 44px 36px 40px;
  text-align: center;
  transition: border-color .2s, box-shadow .2s;
}
.cap-grid .cap:hover { border-color: var(--primary-border); box-shadow: var(--shadow-lg); }
.boagent-landing .cap-index {
  display: block;
  color: var(--primary);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 16px;
}
.boagent-landing .cap-title {
  margin: 0 0 20px;
  font-size: clamp(28px, 3vw, 38px);
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -1px;
  line-height: 1.1;
}
.boagent-landing .cap-desc {
  margin: 0 auto;
  max-width: 420px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.75;
}
.boagent-landing .cap-extend {
  text-align: center;
  margin: 36px 0 0;
  color: var(--text-dim);
  font-size: 15px;
}
.boagent-landing .cap-extend a {
  color: var(--primary);
  font-weight: 600;
  margin-left: 6px;
  border-bottom: 1px solid transparent;
  transition: border-color .2s ease;
}
.cap-extend a:hover { border-bottom-color: var(--primary); }

/* ============================================================
   Screenshot Placeholder (通用)
   ============================================================ */
.boagent-landing .screenshot-placeholder {
  max-width: 1200px;
  margin: 0 auto;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.boagent-landing .screenshot-placeholder img {
  width: 100%;
  height: auto;
  display: block;
}
.boagent-landing .screenshot-placeholder-content {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
}

/* ============================================================
   Product Matrix Section (Placeholder)
   ============================================================ */
.boagent-landing .matrix-placeholder {
  max-width: 1000px;
  margin: 0 auto;
}
.boagent-landing .matrix-placeholder img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}
.boagent-landing .matrix-placeholder-content {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px;
  box-shadow: var(--shadow-md);
}
.boagent-landing .placeholder-inner {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.boagent-landing .placeholder-col h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-strong);
  margin: 0 0 12px;
  text-align: center;
}
.boagent-landing .placeholder-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}
.boagent-landing .placeholder-tags span {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  color: var(--text-dim);
}
.boagent-landing .placeholder-industries {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin: 24px 0;
}
.boagent-landing .placeholder-industries span {
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  color: var(--primary);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 600;
}
.boagent-landing .placeholder-client {
  text-align: center;
  padding-top: 20px;
}
.boagent-landing .placeholder-client span {
  display: inline-block;
  background: var(--text-strong);
  color: #fff;
  padding: 12px 24px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
}

/* ============================================================
   Security Section (Placeholder)
   ============================================================ */
.boagent-landing .security-placeholder {
  max-width: 900px;
  margin: 0 auto;
}
.boagent-landing .security-placeholder img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}
.boagent-landing .security-placeholder-content {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 48px 40px;
  box-shadow: var(--shadow-md);
  text-align: center;
}
.boagent-landing .security-cert {
  max-width: 600px;
  margin: 0 auto;
}
.boagent-landing .security-cert h4 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-strong);
  margin: 0 0 12px;
}
.boagent-landing .security-cert p {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin: 24px 0 0;
}

/* ============================================================
   Enterprise Deployment Section (Placeholder)
   ============================================================ */
.boagent-landing .deployment-placeholder {
  max-width: 1000px;
  margin: 0 auto;
}
.boagent-landing .deployment-placeholder img {
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
}
.boagent-landing .deployment-placeholder-content {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 40px;
  box-shadow: var(--shadow-md);
}
.boagent-landing .deployment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.boagent-landing .deployment-card {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 28px 24px;
  text-align: center;
  transition: border-color .2s, box-shadow .2s;
}
.deployment-card:hover {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-md);
}
.boagent-landing .deployment-card h4 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-strong);
  margin: 0 0 8px;
}
.boagent-landing .deployment-card p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0 0 16px;
}
.boagent-landing .deployment-tag {
  display: inline-block;
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  color: var(--primary);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
}

/* ============================================================
   Demo tabs + stage
   ============================================================ */
.boagent-landing .demo-tabs {
  display: flex; gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 32px;
}
.boagent-landing .demo-tab {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 9px 18px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color .15s, color .15s, background .15s;
  font-family: inherit;
}
.demo-tab:hover { color: var(--text); border-color: var(--border-strong); }
.boagent-landing .demo-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}
.boagent-landing .demo-stage {
  position: relative;
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
}
.boagent-landing .demo-panel {
  grid-column: 1; grid-row: 1;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
  transition: opacity .45s cubic-bezier(.22,.61,.36,1), transform .45s cubic-bezier(.22,.61,.36,1);
}
.boagent-landing .demo-panel.active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
  z-index: 1;
}
.boagent-landing .demo-frame {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  min-height: 480px;
  display: flex;
}
/* dashboard variant */
.boagent-landing .demo-frame .demo-side {
  width: 200px;
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  padding: 18px 14px;
  display: flex; flex-direction: column;
  flex-shrink: 0;
}
.boagent-landing .demo-side-head {
  font-weight: 700;
  font-size: 16px;
  color: var(--text-strong);
  padding: 4px 8px 16px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 12px;
}
.boagent-landing .demo-side-section {
  font-size: 11px;
  color: var(--text-muted);
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 12px 8px 8px;
}
.boagent-landing .demo-side-item {
  font-size: 13px;
  color: var(--text-dim);
  padding: 8px 10px;
  border-radius: 6px;
  cursor: default;
  display: block;
}
.boagent-landing .demo-side-item.active {
  background: #fff;
  color: var(--primary);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.boagent-landing .demo-content {
  flex: 1;
  padding: 22px 26px;
  display: flex; flex-direction: column; gap: 18px;
  min-width: 0;
}
.boagent-landing .demo-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.demo-toolbar strong { font-size: 16px; color: var(--text-strong); }
.demo-date { color: var(--text-muted); font-size: 12.5px; }
.kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.demo-content .chart-bars.c14 { grid-template-columns: repeat(14, 1fr); height: 100px; }

/* cowork variant */
.boagent-landing .cowork {
  flex: 1;
  padding: 28px 32px;
  display: flex; flex-direction: column; gap: 18px;
  background: var(--bg-soft);
  overflow-y: auto;
}
.msg { display: flex; gap: 12px; max-width: 80%; }
.msg.user { margin-left: auto; flex-direction: row-reverse; }
.boagent-landing .msg-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 600; color: #fff;
  flex-shrink: 0;
}
.msg-avatar.u { background: #6b7280; }
.msg-avatar.a { background: var(--primary); }
.msg-avatar.k { background: var(--accent); }
.boagent-landing .msg-bubble {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  font-size: 14px;
  color: var(--text);
  line-height: 1.65;
}
.msg.user .msg-bubble { background: var(--primary-soft); border-color: var(--primary-border); }
.msg-bubble p { margin: 0 0 6px; }
.msg-bubble p:last-child { margin-bottom: 0; }
.boagent-landing .msg-bubble code {
  background: var(--bg-soft);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: 12.5px;
  color: var(--primary);
}
.msg-bubble ul { margin: 6px 0 0; padding-left: 18px; font-size: 13.5px; color: var(--text-dim); }
.msg-bubble a { color: var(--primary); border-bottom: 1px solid var(--primary-border); }
.boagent-landing .confirm-bar {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  font-size: 13px; color: var(--text-dim);
}
.confirm-bar b { color: var(--warn); }
.boagent-landing .confirm-bar button {
  background: var(--primary); color: #fff;
  border: none;
  padding: 6px 14px; border-radius: 6px;
  font-size: 13px; font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.confirm-bar button.ghost { background: #fff; color: var(--text-dim); border: 1px solid var(--border); }

/* knowledge base variant */
.boagent-landing .kb-grid {
  flex: 1;
  display: grid;
  grid-template-columns: 280px 1fr;
}
.boagent-landing .kb-list {
  background: var(--bg-soft);
  border-right: 1px solid var(--border);
  padding: 18px;
  display: flex; flex-direction: column; gap: 8px;
}
.boagent-landing .kb-list-head {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}
.kb-list-head strong { font-size: 14px; }
.kb-list-head .btn { padding: 5px 12px; font-size: 12.5px; }
.boagent-landing .kb-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
  cursor: default;
}
.kb-item.active { border-color: var(--primary); background: var(--primary-soft); }
.kb-name { font-weight: 600; font-size: 14px; color: var(--text-strong); }
.kb-meta { font-size: 12px; color: var(--text-muted); margin-top: 4px; }
.kb-detail { padding: 24px 28px; }
.boagent-landing .kb-detail h4 {
  margin: 0 0 16px; font-size: 18px; font-weight: 700; color: var(--text-strong);
}
.boagent-landing .kb-stats {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  padding: 16px;
  background: var(--bg-soft);
  border-radius: 10px;
  margin-bottom: 18px;
}
.boagent-landing .kb-stats > div b {
  display: block; font-size: 18px; font-weight: 700; color: var(--text-strong);
}
.kb-stats > div span { font-size: 11.5px; color: var(--text-muted); }
.kb-doc-list { display: flex; flex-direction: column; gap: 6px; }
.boagent-landing .doc-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13.5px;
  color: var(--text);
}
.doc-meta { margin-left: auto; color: var(--text-muted); font-size: 12px; }
.boagent-landing .doc-ico {
  width: 36px; height: 22px;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 10px; font-weight: 700; color: #fff;
  border-radius: 4px;
  letter-spacing: 0.3px;
}
.doc-ico.pdf { background: #dc2626; }
.doc-ico.doc { background: #2563eb; }
.doc-ico.md { background: #4b5970; }

/* audit variant */
.audit { flex: 1; padding: 24px 28px; display: flex; flex-direction: column; gap: 18px; }
.boagent-landing .audit-toolbar {
  display: flex; align-items: center; justify-content: space-between;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border);
}
.audit-toolbar strong { font-size: 16px; color: var(--text-strong); }
.audit-filter { color: var(--text-muted); font-size: 12.5px; }
.boagent-landing .audit-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13.5px;
}
.boagent-landing .audit-table th, .audit-table td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border);
}
.boagent-landing .audit-table th {
  font-weight: 600;
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  background: var(--bg-soft);
}
.audit-table td { color: var(--text-dim); }
.audit-table td:first-child { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; color: var(--text); font-size: 12.5px; }
.boagent-landing .tag-ok, .tag-warn, .tag-block {
  display: inline-block;
  padding: 2px 8px;
  font-size: 11.5px;
  font-weight: 600;
  border-radius: 4px;
}
.tag-ok { background: #dcfce7; color: #15803d; }
.tag-warn { background: #fef3c7; color: #b45309; }
.tag-block { background: #fee2e2; color: #b91c1c; }

/* ============================================================
   Enterprise feature pillars (large alternating split blocks)
   ============================================================ */
.boagent-landing .ent-features {
  display: flex; flex-direction: column;
  gap: 24px;
  margin-top: 24px;
}
.boagent-landing .ent-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 64px 0;
  border-top: 1px solid var(--border);
}
.ent-feature:first-child { border-top: none; padding-top: 32px; }
.ent-feature:nth-child(even) .ent-text { order: 2; }
.boagent-landing .ent-num {
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.5px;
  color: var(--primary);
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.boagent-landing .ent-pillar {
  margin: 0 0 16px;
  font-size: clamp(36px, 4.4vw, 56px);
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -1.5px;
  line-height: 1.05;
}
.boagent-landing .ent-headline {
  margin: 0 0 22px;
  font-size: clamp(18px, 1.6vw, 22px);
  color: var(--primary);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.2px;
}
.boagent-landing .ent-sub {
  margin: 0 0 24px;
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.75;
}
.boagent-landing .ent-list {
  list-style: none;
  margin: 0; padding: 0;
  display: flex; flex-direction: column; gap: 12px;
}
.boagent-landing .ent-list li {
  position: relative;
  padding: 12px 16px 12px 36px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14.5px;
  color: var(--text-dim);
  line-height: 1.55;
  transition: border-color .2s ease, background .2s ease;
}
.ent-list li:hover { border-color: var(--primary-border); background: var(--primary-soft); }
.boagent-landing .ent-list li::before {
  content: '';
  position: absolute;
  left: 14px; top: 18px;
  width: 14px; height: 14px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: inset 0 0 0 3px #fff, 0 0 0 1px var(--primary-border);
}
.ent-list b { color: var(--text-strong); font-weight: 600; }

/* ----- Visual mocks ----- */
.ent-visual { display: flex; justify-content: center; align-items: center; }
.boagent-landing .vmock {
  width: 100%;
  max-width: 480px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.boagent-landing .vmock-head {
  display: flex; align-items: center; gap: 7px;
  padding: 12px 18px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
}
.boagent-landing .vmock-head span {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--border-strong);
}
.boagent-landing .vmock-head b {
  margin-left: 12px;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 600;
}
.boagent-landing .vmock-foot {
  padding: 12px 20px;
  background: var(--bg-soft);
  border-top: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-muted);
}

/* Chain visual (four-level call chain) */
.boagent-landing .vmock-chain .chain-body {
  padding: 20px 22px;
  display: flex; flex-direction: column;
  align-items: stretch; gap: 6px;
}
.boagent-landing .chain-node {
  display: grid;
  grid-template-columns: 88px 1fr;
  gap: 14px;
  align-items: center;
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  transition: border-color .2s ease;
}
.chain-node:hover { border-color: var(--primary-border); }
.boagent-landing .chain-tier {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-soft);
  padding: 5px 8px;
  border-radius: 6px;
  text-align: center;
  letter-spacing: 0.3px;
}
.chain-content { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.boagent-landing .chain-content b {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-strong);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.boagent-landing .chain-content span {
  color: var(--text-muted);
  font-size: 12px;
}
.boagent-landing .chain-arrow {
  text-align: center;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1;
  padding: 2px 0;
  margin-left: 44px; /* align under L1/L2 etc tier label center */
}
.chain-node.n1 .chain-tier { color: #6b7280; background: #f3f4f6; }
.chain-node.n2 .chain-tier { color: var(--primary); background: var(--primary-soft); }
.chain-node.n3 .chain-tier { color: var(--accent); background: #ecfeff; }
.chain-node.n4 .chain-tier { color: #b45309; background: #fef3c7; }

/* Topology visual */
.vmock-topology { padding: 28px 24px; }
.boagent-landing .topo-cloud {
  position: relative;
  text-align: center;
  padding: 18px 16px;
  background: var(--bg-soft);
  border: 1px dashed var(--border-strong);
  border-radius: 10px;
}
.boagent-landing .topo-label {
  display: inline-block;
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
}
.boagent-landing .topo-x {
  display: inline-block;
  margin-left: 10px;
  padding: 3px 10px;
  background: #fee2e2;
  color: var(--danger);
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 600;
}
.boagent-landing .topo-line {
  height: 24px;
  background:
    .boagent-landing linear-gradient(180deg, var(--border-strong) 50%, transparent 50%) center / 2px 8px no-repeat,
    linear-gradient(180deg, var(--border-strong) 50%, transparent 50%) center 12px / 2px 8px no-repeat;
  margin: 0 auto;
  width: 2px;
  position: relative;
}
.boagent-landing .topo-line::before, .topo-line::after {
  content: '';
  position: absolute;
  left: 50%;
  width: 2px;
  height: 4px;
  background: var(--border-strong);
}
.topo-line::before { top: 0; }
.topo-line::after { top: 10px; }
.boagent-landing .topo-private {
  background: linear-gradient(180deg, var(--primary-soft), #fff);
  border: 2px solid var(--primary);
  border-radius: 12px;
  padding: 18px;
  position: relative;
}
.boagent-landing .topo-private-label {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 14px;
  letter-spacing: 0.3px;
}
.boagent-landing .topo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.boagent-landing .topo-node {
  background: #fff;
  border: 1px solid var(--primary-border);
  border-radius: 8px;
  padding: 10px 8px;
  text-align: center;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--text);
}

/* Evolve visual */
.vmock-evolve { padding: 24px 22px; display: flex; flex-direction: column; align-items: center; gap: 6px; }
.boagent-landing .evolve-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  width: 100%;
}
.boagent-landing .evolve-pill {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  border: 1px solid;
  background: #fff;
}
.evolve-pill.p1 { color: #1e4ed8; border-color: #c7d2fe; background: #eef2ff; }
.evolve-pill.p2 { color: #0891b2; border-color: #a5f3fc; background: #ecfeff; }
.evolve-pill.p3 { color: #b45309; border-color: #fcd34d; background: #fef3c7; }
.evolve-pill.p4 { color: var(--text-muted); border-color: var(--border); background: var(--bg-soft); border-style: dashed; }
.boagent-landing .evolve-arrow {
  color: var(--text-muted);
  font-size: 18px;
  line-height: 1;
}
.boagent-landing .evolve-block {
  flex: 1; min-width: 140px;
  padding: 10px 14px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  text-align: center;
}
.boagent-landing .evolve-foundation {
  width: 100%;
  padding: 14px 18px;
  background: var(--text-strong);
  color: #fff;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  letter-spacing: 0.3px;
}

/* ============================================================
   Full Stack diagram (BoAgent + AIOS)
   ============================================================ */
.boagent-landing .stack-diagram {
  max-width: 980px;
  margin: 0 auto 64px;
  display: flex; flex-direction: column;
  align-items: stretch;
  gap: 0;
}
.boagent-landing .stack-layer {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 24px 28px 28px;
  box-shadow: var(--shadow-sm);
}
.boagent-landing .stack-layer.stack-app {
  border-color: var(--primary);
  border-width: 2px;
  background: linear-gradient(180deg, var(--primary-soft), #fff);
  box-shadow: 0 12px 28px rgba(30, 78, 216, 0.1);
}
.boagent-landing .stack-layer.stack-aios {
  border-color: #c4a878;
  border-width: 2px;
  background: linear-gradient(180deg, #fdf8ec, #fff);
  box-shadow: 0 12px 28px rgba(196, 168, 120, 0.1);
}
.boagent-landing .stack-layer.stack-infra {
  background: var(--bg-soft);
  border-color: var(--border-strong);
  border-style: dashed;
}
.boagent-landing .stack-tag {
  display: inline-block;
  position: absolute;
  top: -12px; left: 24px;
  background: var(--primary);
  color: #fff;
  font-size: 11.5px; font-weight: 700;
  padding: 4px 12px;
  border-radius: 6px;
  letter-spacing: 0.5px;
}
.stack-tag.aios { background: #b08a4a; }
.stack-tag.infra { background: var(--text-muted); }
.boagent-landing .stack-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 14px;
  letter-spacing: -0.3px;
}
.boagent-landing .stack-pills {
  display: flex; flex-wrap: wrap; gap: 8px;
}
.boagent-landing .stack-pills span {
  background: #fff;
  border: 1px solid var(--primary-border);
  color: var(--primary);
  font-size: 13px; font-weight: 600;
  padding: 6px 14px;
  border-radius: 8px;
}
.boagent-landing .stack-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.boagent-landing .stack-card {
  background: #fff;
  border: 1px solid #e8d8b8;
  border-radius: 10px;
  padding: 16px 18px;
}
.boagent-landing .stack-card-name {
  font-size: 15px;
  font-weight: 700;
  color: #8a6a32;
  margin-bottom: 6px;
}
.boagent-landing .stack-card-desc {
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.65;
}
.boagent-landing .stack-bridge {
  display: flex; justify-content: center;
  padding: 8px 0;
  position: relative;
}
.boagent-landing .stack-bridge::before {
  content: '';
  width: 2px; height: 100%;
  background: linear-gradient(180deg, var(--border-strong), var(--border-strong));
  position: absolute; left: 50%; top: 0; transform: translateX(-50%);
}
.boagent-landing .stack-bridge span {
  position: relative; z-index: 1;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 11.5px;
  color: var(--text-muted);
  font-weight: 500;
  padding: 4px 14px;
  border-radius: 999px;
  letter-spacing: 0.3px;
}
.section-alt .stack-bridge span { background: var(--bg-alt); }

.boagent-landing .stack-infra-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 8px;
}
.boagent-landing .infra-cell {
  display: flex; flex-wrap: wrap; gap: 6px;
  align-items: center;
}
.boagent-landing .infra-cell-label {
  width: 100%;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.3px;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.boagent-landing .infra-cell span {
  background: #fff;
  border: 1px solid var(--border);
  font-size: 12.5px;
  color: var(--text);
  padding: 4px 10px;
  border-radius: 6px;
  font-weight: 500;
}

/* AIOS reasons row */
.boagent-landing .aios-reasons {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-bottom: 32px;
}
.boagent-landing .aios-reason {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 24px 22px;
  transition: border-color .2s, box-shadow .2s;
}
.aios-reason:hover { border-color: #c4a878; box-shadow: var(--shadow-md); }
.boagent-landing .aios-reason-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 30px; height: 30px;
  background: #fdf8ec;
  border: 1px solid #e8d8b8;
  color: #8a6a32;
  font-weight: 700; font-size: 13px;
  border-radius: 8px;
  margin-bottom: 14px;
}
.boagent-landing .aios-reason h4 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--text-strong);
}
.boagent-landing .aios-reason p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13.5px;
  line-height: 1.7;
}
.boagent-landing .aios-trust {
  text-align: center;
  margin: 0;
  padding: 16px 24px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text-dim);
  font-size: 13.5px;
  line-height: 1.65;
  max-width: 920px;
  margin: 0 auto;
}

/* Stack videos (AIOS Skills) */
.boagent-landing .stack-videos {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
  max-width: 960px;
  margin-left: auto;
  margin-right: auto;
}
.boagent-landing .stack-video-label {
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 12px;
}

/* Industry section videos */
.boagent-landing .ind-section-label {
  text-align: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 24px;
}
.boagent-landing .ind-videos {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
.boagent-landing .ind-video-label {
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  margin: 0 0 10px;
}

@media (max-width: 768px) {
  .boagent-landing .stack-videos { grid-template-columns: 1fr; }
  .boagent-landing .ind-videos { grid-template-columns: 1fr; }
}

/* Industry pill row */
.boagent-landing .ind-row {
  display: flex; flex-wrap: wrap; gap: 10px;
  justify-content: center;
  margin-bottom: 48px;
}
.boagent-landing .ind-row span {
  background: #fff;
  border: 1px solid var(--border);
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  color: var(--text);
  font-weight: 500;
}

.boagent-landing .card {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color .2s ease, box-shadow .2s ease, transform .15s ease;
}
.boagent-landing .card:hover {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.boagent-landing .card-num {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  margin-bottom: 14px;
  font-family: 'Inter', monospace;
}
.boagent-landing .card h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -0.2px;
}
.boagent-landing .card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.7;
}

/* Scenarios */
.scenario { padding-right: 80px; }
.boagent-landing .scenario-tag {
  position: absolute; top: 24px; right: 24px;
  font-weight: 600; font-size: 12px;
  padding: 3px 10px; border-radius: 6px;
  background: var(--primary-soft);
  color: var(--primary);
  letter-spacing: 0.3px;
}
.boagent-landing .bullets {
  padding: 16px 0 0 18px;
  margin: 0;
  border-top: 1px solid var(--border);
  margin-top: 16px;
  padding-top: 16px;
}
.boagent-landing .bullets li {
  color: var(--text-dim);
  font-size: 13.5px;
  margin-bottom: 6px;
}

/* 5-step loop — 横向流 */
.boagent-landing .loop {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}
.boagent-landing .loop::before {
  content: '';
  position: absolute;
  top: 56px; left: 8%; right: 8%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--primary-border), var(--primary-border), transparent);
  z-index: 0;
}
.boagent-landing .loop-step {
  position: relative;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  text-align: left;
  transition: border-color .2s, box-shadow .2s, transform .15s;
  z-index: 1;
}
.loop-step:hover { border-color: var(--primary-border); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.boagent-landing .loop-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px;
  background: var(--primary);
  color: #fff;
  border-radius: 8px;
  font-weight: 700; font-size: 13px;
  letter-spacing: 0;
  margin-bottom: 12px;
}
.loop-step h4 { margin: 0 0 8px; font-size: 17px; font-weight: 700; color: var(--text-strong); }
.loop-step p { margin: 0; color: var(--text-dim); font-size: 13.5px; line-height: 1.65; }

/* Architecture layers */
.boagent-landing .layers {
  display: grid; gap: 12px;
  max-width: 1000px;
  margin: 0 auto;
}
.boagent-landing .layer {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 24px;
  align-items: center;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 28px;
  transition: border-color .2s, box-shadow .2s;
}
.layer:hover { border-color: var(--primary-border); box-shadow: var(--shadow-md); }
.boagent-landing .layer-title {
  font-weight: 700;
  color: var(--primary);
  font-size: 14px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.layer-body { display: flex; flex-wrap: wrap; gap: 8px; }
.boagent-landing .layer-body span {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 7px 14px;
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--text);
  font-weight: 500;
}

/* Roadmap timeline */
.boagent-landing .timeline {
  list-style: none;
  margin: 0 auto; padding: 0;
  max-width: 880px;
  position: relative;
  display: grid; gap: 16px;
}
.boagent-landing .timeline::before {
  content: '';
  position: absolute;
  left: 36px; top: 12px; bottom: 12px;
  width: 2px;
  background: var(--border);
}
.boagent-landing .timeline li {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  align-items: start;
  position: relative;
}
.boagent-landing .ts-ver {
  font-weight: 700;
  background: var(--primary);
  border: 2px solid var(--primary);
  color: #fff;
  padding: 8px 0;
  text-align: center;
  border-radius: 999px;
  font-size: 13px;
  letter-spacing: 0.3px;
  z-index: 1;
}
.boagent-landing .ts-body {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  transition: border-color .2s, box-shadow .2s;
}
.ts-body:hover { border-color: var(--primary-border); box-shadow: var(--shadow-md); }
.ts-body h4 { margin: 0 0 6px; font-size: 17px; font-weight: 700; color: var(--text-strong); }
.ts-body p { margin: 0; color: var(--text-dim); font-size: 14.5px; line-height: 1.65; }

/* Plans */
.plan { display: flex; flex-direction: column; position: relative; }
.boagent-landing .plan-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-strong);
  margin-bottom: 4px;
  letter-spacing: -0.3px;
}
.boagent-landing .plan-target {
  color: var(--text-muted);
  font-size: 13.5px;
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}
.boagent-landing .plan ul {
  padding: 0 0 0 18px;
  margin: 0;
  color: var(--text-dim);
  font-size: 14.5px;
  line-height: 1.85;
}
.plan ul li { margin-bottom: 4px; }
.boagent-landing .plan-featured {
  border-color: var(--primary);
  border-width: 2px;
  box-shadow: var(--shadow-lg);
}
.plan-featured .plan-name { color: var(--primary); }
.boagent-landing .plan-badge {
  position: absolute; top: -12px; right: 22px;
  background: var(--primary);
  color: #fff;
  padding: 4px 12px;
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.3px;
}

/* ============================================================
   商业渠道 - 新设计
   ============================================================ */
.boagent-landing .contact-section {
  background: linear-gradient(135deg, #0a1736 0%, #1e4ed8 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}
.boagent-landing .contact-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.boagent-landing .contact-section-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  max-width: 1100px;
  margin: 0 auto;
}
.boagent-landing .contact-info {
  color: #fff;
}
.boagent-landing .contact-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.15);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  margin-bottom: 24px;
}
.boagent-landing .contact-info h2 {
  font-size: 42px;
  font-weight: 700;
  margin: 0 0 12px;
  color: #fff;
}
.boagent-landing .contact-subtitle {
  font-size: 18px;
  color: rgba(255,255,255,0.8);
  margin: 0 0 32px;
}
.boagent-landing .contact-stats-grid {
  display: flex;
  gap: 40px;
  margin-bottom: 32px;
}
.boagent-landing .contact-stat-item {
  display: flex;
  flex-direction: column;
}
.boagent-landing .stat-num {
  font-size: 48px;
  font-weight: 700;
  color: #fbbf24;
  line-height: 1;
}
.boagent-landing .stat-text {
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-top: 4px;
}
.boagent-landing .contact-phone {
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(255,255,255,0.1);
  padding: 20px 24px;
  border-radius: 12px;
  margin-bottom: 24px;
}
.boagent-landing .phone-icon {
  width: 48px;
  height: 48px;
  background: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}
.boagent-landing .phone-info {
  display: flex;
  flex-direction: column;
}
.boagent-landing .phone-label {
  font-size: 13px;
  color: rgba(255,255,255,0.7);
}
.boagent-landing .phone-num {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
}
.boagent-landing .contact-features {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.boagent-landing .feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: rgba(255,255,255,0.9);
}
.boagent-landing .feature-item svg {
  color: #22c55e;
}
.boagent-landing .contact-email {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px;
  background: rgba(255,255,255,0.08);
  border-radius: 16px;
  border: 1px solid rgba(255,255,255,0.15);
}
.boagent-landing .contact-email .contact-badge {
  margin-bottom: 20px;
}
.boagent-landing .contact-email h2 {
  font-size: 36px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 8px;
}
.boagent-landing .contact-email .contact-subtitle {
  font-size: 16px;
  color: rgba(255,255,255,0.8);
  margin: 0 0 28px;
}
.boagent-landing .contact-email-box {
  background: rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 20px 32px;
  width: 100%;
}
.boagent-landing .contact-email-label {
  font-size: 13px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.boagent-landing .contact-email-address {
  font-size: 20px;
  font-weight: 700;
  color: #fbbf24;
  text-decoration: none;
  transition: color .2s;
  word-break: break-all;
}
.boagent-landing .contact-email-address:hover {
  color: #f59e0b;
}
.boagent-landing .contact-form-wrapper {
  background: #fff;
  border-radius: 16px;
  padding: 40px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.boagent-landing .contact-form-header {
  text-align: center;
  margin-bottom: 28px;
}
.boagent-landing .contact-form-header h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-strong);
  margin: 0 0 8px;
}
.boagent-landing .contact-form-header p {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0;
}
.boagent-landing .contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.boagent-landing .form-group {
  width: 100%;
}
.boagent-landing .form-group-sms {
  display: flex;
  gap: 12px;
}
.boagent-landing .form-group-sms input {
  flex: 1;
}
.boagent-landing .contact-form input {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-family: inherit;
  transition: all .2s;
}
.boagent-landing .contact-form input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30,78,216,0.1);
}
.boagent-landing .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.boagent-landing .form-row-sms {
  grid-template-columns: 1fr auto;
}
.boagent-landing .btn-sms {
  padding: 14px 20px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  cursor: pointer;
  white-space: nowrap;
  font-family: inherit;
  transition: all .2s;
}
.boagent-landing .btn-sms:hover {
  background: var(--primary-soft);
  border-color: var(--primary);
}
.boagent-landing .btn-submit {
  width: 100%;
  padding: 16px 24px;
  background: linear-gradient(135deg, #1e4ed8 0%, #1d3fb8 100%);
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: inherit;
  transition: all .2s;
  margin-top: 8px;
}
.boagent-landing .btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(30,78,216,0.3);
}

/* 表单提示框 */
.boagent-landing .consult-toast {
  position: fixed;
  top: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(-100px);
  background: #fff;
  border-radius: 8px;
  padding: 14px 24px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.15);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 9999;
  opacity: 0;
  transition: all .3s ease;
  font-size: 14px;
}
.boagent-landing .consult-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}
.boagent-landing .consult-toast::before {
  content: '';
  width: 20px;
  height: 20px;
  border-radius: 50%;
  flex-shrink: 0;
}
.boagent-landing .consult-toast-success {
  border-left: 4px solid #22c55e;
}
.boagent-landing .consult-toast-success::before {
  background: #22c55e;
}
.boagent-landing .consult-toast-success::before {
  content: '✓';
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: bold;
}
.boagent-landing .consult-toast-error {
  border-left: 4px solid #ef4444;
}
.boagent-landing .consult-toast-error::before {
  background: #ef4444;
}
.boagent-landing .consult-toast-error::before {
  content: '✕';
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: bold;
}
.boagent-landing .consult-toast .toast-message {
  color: #333;
}

/* 表单输入框错误状态 */
.boagent-landing .contact-form input.error {
  border-color: #ef4444 !important;
  background: #fef2f2;
}

/* 加载动画 */
.boagent-landing .loading-spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.8s linear infinite;
  margin-right: 8px;
}
@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 900px) {
  .boagent-landing .contact-section-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .boagent-landing .contact-section {
    padding: 60px 0;
  }
  .boagent-landing .contact-info h2 {
    font-size: 32px;
  }
  .boagent-landing .stat-num {
    font-size: 36px;
  }
  .boagent-landing .contact-stats-grid {
    gap: 24px;
  }
  .boagent-landing .contact-form-wrapper {
    padding: 28px;
  }
}
@media (max-width: 600px) {
  .boagent-landing .form-row {
    grid-template-columns: 1fr;
  }
  .boagent-landing .form-row-sms {
    grid-template-columns: 1fr;
  }
  .boagent-landing .contact-info h2 {
    font-size: 28px;
  }
  .boagent-landing .contact-phone {
    flex-direction: column;
    text-align: center;
  }
}

/* CTA */
.boagent-landing .cta {
  padding: 90px 0;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.boagent-landing .cta-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 40px; flex-wrap: wrap;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 56px 56px;
  box-shadow: var(--shadow-md);
}
.cta-copy { max-width: 600px; }
.boagent-landing .cta h2 {
  margin: 0 0 12px;
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -0.4px;
  line-height: 1.25;
}
.cta p { margin: 0; color: var(--text-dim); font-size: 16px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* Footer */
.boagent-landing .footer {
  background: #050d24;
  color: rgba(255,255,255,0.7);
  padding: 56px 0 0;
}
.boagent-landing .footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.boagent-landing .footer-brand-col { display: flex; flex-direction: column; gap: 16px; }
.boagent-landing .footer-col-title { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.boagent-landing .footer-brand-row { display: flex; align-items: center; gap: 12px; padding: 8px 0; }
.boagent-landing .footer-brand-logo { height: 32px; width: 80px; flex-shrink: 0; object-fit: contain; }
.boagent-landing .footer-brand-info { display: flex; flex-direction: column; gap: 2px; }
.boagent-landing .footer-brand-domain { font-size: 13px; color: rgba(255,255,255,0.8); text-decoration: none; font-weight: 500; }
.boagent-landing .footer-brand-domain:hover { color: #fff; }
.boagent-landing .footer-brand-desc { font-size: 12px; color: rgba(255,255,255,0.4); }
.boagent-landing .footer-brand-divider { height: 1px; background: rgba(255,255,255,0.1); margin: 8px 0; }
.boagent-landing .footer-cols { display: flex; flex-direction: column; gap: 8px; }
.boagent-landing .footer-cols h5 { color: #fff; font-size: 14px; font-weight: 600; margin-bottom: 12px; }
.boagent-landing .footer-cols a {
  display: block; font-size: 13px; color: rgba(255,255,255,0.6);
  padding: 4px 0; transition: color .15s; text-decoration: none;
}
.boagent-landing .footer-cols a:hover { color: #fff; }
.boagent-landing .footer-qrcode-row { display: flex; gap: 16px; margin-top: 12px; }
.boagent-landing .footer-qrcode-item { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.boagent-landing .footer-qrcode-img { width: 56px; height: 56px; border-radius: 8px; flex-shrink: 0; }
.boagent-landing .footer-qrcode-label { font-size: 11px; color: rgba(255,255,255,0.5); text-align: center; }
.boagent-landing .footer-contact-item { display: flex; align-items: flex-start; gap: 10px; padding: 4px 0; }
.boagent-landing .footer-contact-icon { width: 18px; height: 18px; flex-shrink: 0; color: rgba(255,255,255,0.4); margin-top: 2px; }
.boagent-landing .footer-contact-content { display: flex; flex-direction: column; gap: 2px; }
.boagent-landing .footer-contact-label { font-size: 11px; color: rgba(255,255,255,0.4); }
.boagent-landing .footer-contact-value { font-size: 13px; color: rgba(255,255,255,0.8); }
.boagent-landing .footer-contact-value a { color: rgba(255,255,255,0.8); text-decoration: none; }
.boagent-landing .footer-contact-value a:hover { color: #fbbf24; }
.boagent-landing .footer-bottom {
  padding: 20px 0;
  text-align: center;
}
.boagent-landing .footer-copyright {
  font-size: 12px; color: rgba(255,255,255,0.4);
  line-height: 1.8;
}
.boagent-landing .footer-copyright a { color: rgba(255,255,255,0.5); text-decoration: none; }
.boagent-landing .footer-copyright a:hover { color: rgba(255,255,255,0.8); }
.boagent-landing .footer-icp { font-size: 11px; color: rgba(255,255,255,0.3); margin-top: 8px; }

/* ============================================================
   Responsive
   ============================================================ */
/* ---- Hamburger button ---- */
.boagent-landing .nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 60;
}
.boagent-landing .nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .25s, opacity .25s;
}
.boagent-landing .nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.boagent-landing .nav-hamburger.open span:nth-child(2) {
  opacity: 0;
}
.boagent-landing .nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.boagent-landing .nav-mobile-cta {
  display: none;
}

@media (max-width: 1100px) {
  .boagent-landing .nav-hamburger { display: flex !important; }
  .boagent-landing .nav-cta { display: none !important; }
  .boagent-landing .nav-inner { gap: 16px; }
  .boagent-landing .nav-links {
    display: none !important;
    position: absolute;
    top: 100%;
    right: 0;
    left: auto;
    width: 280px;
    background: #fff;
    border-top: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    z-index: 55;
    padding: 16px 24px 24px;
  }
  .boagent-landing .nav-links.open { display: flex !important; flex-direction: column !important; }
  .boagent-landing .nav-links.open .nav-dropdown { position: static; }
  .boagent-landing .nav-links.open .nav-dropdown-menu { display: flex !important; visibility: visible !important; opacity: 1 !important; }
  .boagent-landing .nav-links a {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
  }
  .boagent-landing .nav-dropdown-menu {
    display: flex !important;
    flex-direction: column;
    position: static !important;
    transform: none !important;
    box-shadow: none !important;
    border: none !important;
    padding: 8px 0 !important;
    min-width: auto !important;
    width: 100% !important;
    visibility: visible !important;
    opacity: 1 !important;
  }
  .boagent-landing .nav-links .nav-dropdown-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-dim);
    padding: 8px 16px;
  }
  .boagent-landing .nav-links .nav-mobile-cta {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
  }
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero-visual { max-width: 600px; margin: 0 auto; }
  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .loop { grid-template-columns: repeat(3, 1fr); }
  .loop::before { display: none; }
  .boagent-landing .footer-inner { grid-template-columns: 1fr 1fr; }
  .topbar-inner { flex-direction: column; gap: 4px; padding: 8px 24px; }
  .ent-feature { grid-template-columns: 1fr; gap: 36px; padding: 48px 0; }
  .ent-feature:nth-child(even) .ent-text { order: 0; }
  .stack-grid { grid-template-columns: 1fr; }
  .stack-infra-row { grid-template-columns: 1fr; }
  .boagent-landing .aios-reasons { grid-template-columns: 1fr; gap: 14px; }
  .boagent-landing .aios-reason { padding: 18px 16px; }
  .boagent-landing .aios-reason h4 { font-size: 15px; }
  .boagent-landing .aios-reason p { font-size: 12.5px; }
  .boagent-landing .hero::before, .boagent-landing .hero::after { display: none; }

  /* Hero Features Grid Responsive */
  .boagent-landing .hero-features-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .boagent-landing .hero-feature {
    padding: 14px 16px;
  }
  .boagent-landing .hero-feature h4 {
    font-size: 14px;
  }
  .boagent-landing .hero-feature p {
    font-size: 12px;
  }

  /* Product Matrix Responsive */
  .boagent-landing .placeholder-inner {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .boagent-landing .placeholder-industries {
    gap: 8px;
  }
  .boagent-landing .placeholder-industries span {
    font-size: 12px;
    padding: 6px 14px;
  }

  /* Deployment Grid Responsive */
  .boagent-landing .deployment-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
}
@media (max-width: 720px) {
  .container { padding: 0 16px; }
  .boagent-landing { overflow-x: hidden; }
  .boagent-landing table, .boagent-landing pre, .boagent-landing code {
    max-width: 100%;
    overflow-x: auto;
  }
  .boagent-landing img { max-width: 100%; height: auto; }
  .hero { padding: 40px 0 48px; }
  .hero-title { font-size: 28px; letter-spacing: -0.5px; }
  .hero-lede { font-size: 15px; }
  .hero-cta { gap: 10px; }
  .hero-cta .btn-lg { padding: 10px 18px; font-size: 14px; }
  .boagent-landing .hero-meta { grid-template-columns: repeat(2, 1fr); gap: 12px; padding-top: 20px; }
  .boagent-landing .hero-meta > div { text-align: center; padding: 12px 8px; background: var(--bg-soft); border: 1px solid var(--border); border-radius: 10px; }
  .boagent-landing .hero-meta > div b { font-size: 18px; margin-bottom: 2px; }
  .boagent-landing .hero-meta > div span { font-size: 11px; }
  .section { padding: 48px 0; }
  .section-head { margin-bottom: 40px; }
  .section-name { font-size: 26px; }
  .section-tagline { font-size: 14px; }
  .section-eyebrow { font-size: 11px; }
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .scenario { padding-right: 0; }
  .layer { grid-template-columns: 1fr; gap: 12px; padding: 16px; }
  .layer-body span { font-size: 12px; padding: 5px 10px; }
  .timeline::before { left: 28px; }
  .timeline li { grid-template-columns: 64px 1fr; gap: 18px; }
  .cta-inner { padding: 28px 20px; flex-direction: column; align-items: flex-start; }
  .cta h2 { font-size: 22px; }
  .cta-actions { width: 100%; }
  .cta-actions .btn-lg { width: 100%; justify-content: center; }
  .boagent-landing .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .boagent-landing .footer-bottom { text-align: left; }
  .preview-body { grid-template-columns: 1fr; }
  .preview-side { display: none; }
  .loop { grid-template-columns: 1fr; }
  .boagent-landing .nav-inner { min-height: 56px; gap: 16px; padding: 12px 16px; }
  .boagent-landing .nav-brand-row { width: 100%; }
  .boagent-landing .brand-text { margin-left: 10px; }
  .boagent-landing .brand-title { font-size: 12px; }
  .boagent-landing .brand-desc { font-size: 10px; }
  .boagent-landing .nav-links { width: 100%; }
  .brand-logo { height: 28px; }
  .plan-name { font-size: 18px; }
  .plan-target { font-size: 12px; }
  .plan ul { font-size: 13px; }

  /* ---- 核心能力卡片 ---- */
  .boagent-landing .cap-grid .cap { padding: 28px 20px; }
  .boagent-landing .cap-title { font-size: 22px; margin-bottom: 14px; }
  .boagent-landing .cap-desc { font-size: 13px; line-height: 1.7; }
  .boagent-landing .cap-extend { font-size: 13px; margin-top: 24px; }

  /* ---- 产品演示区域 ---- */
  .boagent-landing .demo-frame { min-height: 320px; }
  .boagent-landing .demo-frame .demo-side { display: none; }
  .boagent-landing .demo-tabs { flex-wrap: wrap; gap: 6px; }
  .boagent-landing .demo-tab { padding: 7px 12px; font-size: 12px; }
  .boagent-landing .demo-content { padding: 16px; gap: 12px; }
  .boagent-landing .demo-toolbar { padding-bottom: 10px; }
  .demo-toolbar strong { font-size: 14px; }
  .demo-date { font-size: 11px; }
  .boagent-landing .kpi-row { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .boagent-landing .kpi { padding: 10px; }
  .boagent-landing .kpi-value { font-size: 18px; }
  .boagent-landing .kpi-value span { font-size: 11px; }
  .boagent-landing .kpi-label { font-size: 10px; }
  .boagent-landing .kpi-trend { font-size: 10px; margin-top: 4px; }
  .demo-content .chart-bars.c14 { grid-template-columns: repeat(7, 1fr); height: 70px; gap: 4px; }
  .boagent-landing .chart { padding: 10px; }
  .boagent-landing .chart-head { font-size: 11px; margin-bottom: 8px; }
  /* Cowork */
  .boagent-landing .cowork { padding: 16px; gap: 12px; }
  .boagent-landing .msg { max-width: 95%; }
  .boagent-landing .msg-avatar { width: 30px; height: 30px; font-size: 11px; }
  .boagent-landing .msg-bubble { padding: 10px 12px; font-size: 13px; line-height: 1.55; }
  .boagent-landing .confirm-bar { font-size: 12px; gap: 8px; }
  .boagent-landing .confirm-bar button { padding: 5px 10px; font-size: 12px; }
  /* Knowledge base */
  .boagent-landing .kb-grid { grid-template-columns: 1fr; }
  .boagent-landing .kb-list { display: none; }
  .boagent-landing .kb-detail h4 { font-size: 15px; }
  .boagent-landing .kb-stats { gap: 12px; }
  .boagent-landing .kb-stats b { font-size: 16px; }
  .boagent-landing .kb-stats span { font-size: 10px; }
  .boagent-landing .kb-doc-list { font-size: 12px; }
  /* Audit table */
  .boagent-landing .audit { padding: 0; }
  .boagent-landing .audit-toolbar { padding: 12px 14px; flex-direction: column; align-items: flex-start; gap: 4px; }
  .boagent-landing .audit-toolbar strong { font-size: 14px; }
  .boagent-landing .audit-filter { font-size: 11px; }
  .boagent-landing .audit-table { font-size: 11px; }
  .boagent-landing .audit-table th, .boagent-landing .audit-table td { padding: 8px 6px; }

  /* ---- 企业级特性 ---- */
  .boagent-landing .ent-feature { gap: 28px; padding: 36px 0; }
  .boagent-landing .ent-text { padding: 0; }
  .boagent-landing .ent-num { font-size: 12px; padding: 4px 10px; margin-bottom: 16px; }
  .boagent-landing .ent-pillar { font-size: 28px; letter-spacing: -0.5px; margin-bottom: 12px; white-space: nowrap; }
  .boagent-landing .ent-headline { font-size: 15px; margin-bottom: 14px; }
  .boagent-landing .ent-sub { font-size: 13px; line-height: 1.7; margin-bottom: 18px; }
  .boagent-landing .ent-list { gap: 8px; }
  .boagent-landing .ent-list li { padding: 10px 12px 10px 32px; font-size: 12.5px; line-height: 1.5; }
  .boagent-landing .ent-list li::before { left: 10px; top: 14px; width: 12px; height: 12px; }
  .boagent-landing .vmock { max-width: 100%; font-size: 12px; }
  .boagent-landing .vmock-head { padding: 10px 14px; }
  .boagent-landing .vmock-head b { font-size: 11px; margin-left: 8px; }
  .boagent-landing .vmock-foot { padding: 10px 14px; font-size: 11px; }
  .boagent-landing .chain-node { grid-template-columns: 1fr; gap: 4px; padding: 10px 12px; }
  .boagent-landing .chain-tier { font-size: 10px; }
  .boagent-landing .chain-content { font-size: 11px; }
  .boagent-landing .chain-content b { font-size: 12px; }
  .boagent-landing .chain-content span { font-size: 10px; }
  .boagent-landing .chain-arrow { font-size: 14px; }
  /* Topology mock */
  .boagent-landing .topo-private-label { font-size: 11px; }
  .boagent-landing .topo-grid { gap: 6px; }
  .boagent-landing .topo-node { padding: 8px 10px; font-size: 11px; }
  /* Evolve mock */
  .boagent-landing .evolve-pill { padding: 6px 12px; font-size: 12px; }
  .boagent-landing .evolve-block { padding: 8px 14px; font-size: 12px; }
  .boagent-landing .evolve-foundation { padding: 10px 14px; font-size: 11px; }
  .boagent-landing .evolve-arrow { font-size: 16px; }

  /* ---- Stack / AIOS ---- */
  .boagent-landing .stack-card { padding: 16px; }
  .boagent-landing .stack-card-desc { font-size: 13px; }
  .boagent-landing .aios-reason { padding: 20px; }
  .boagent-landing .ind-videos { grid-template-columns: 1fr !important; }
  .boagent-landing .stack-videos { grid-template-columns: 1fr; }
  .boagent-landing .stack-layer { padding: 16px; }
  .boagent-landing .stack-pills { flex-wrap: wrap; gap: 6px; }
  .boagent-landing .stack-pills span { font-size: 12px; padding: 4px 10px; }
  .boagent-landing .stack-card-name { font-size: 14px; }
}

/* ============================================================
   Industry Solution Pages
   ============================================================ */
.sol-page {
  display: flex; flex-direction: column; gap: 36px;
}
.sol-hero-mini {
  text-align: center;
  padding: 40px 20px 0;
}
.sol-hero-mini h3 {
  font-size: clamp(24px, 2.4vw, 32px);
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: -0.5px;
  margin: 0 0 12px;
}
.sol-hero-mini p {
  color: var(--text-dim);
  font-size: 15.5px;
  line-height: 1.7;
  max-width: 720px;
  margin: 0 auto;
}
.sol-badge-row {
  margin-bottom: 16px;
}
.sol-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--primary-soft);
  border: 1px solid var(--primary-border);
  color: var(--primary);
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.sol-grid {
  display: grid; gap: 16px;
}
.sol-grid-2 { grid-template-columns: repeat(2, 1fr); }
.sol-grid-3 { grid-template-columns: repeat(3, 1fr); }
.sol-feat {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color .2s, box-shadow .2s;
}
.sol-feat:hover { border-color: var(--primary-border); box-shadow: var(--shadow-md); }
.sol-feat-num {
  display: inline-block;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px; font-weight: 700; color: var(--primary);
  letter-spacing: 1.5px;
  margin-bottom: 12px;
}
.sol-feat h4 {
  margin: 0 0 8px;
  font-size: 17px; font-weight: 700;
  color: var(--text-strong);
}
.sol-feat p {
  margin: 0;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}
.sol-feat p b {
  color: var(--text-dim);
}
.sol-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 20px;
  transition: border-color .2s, box-shadow .2s;
}
.sol-card:hover { border-color: var(--primary-border); box-shadow: var(--shadow-md); }
.sol-card h4 {
  margin: 0 0 8px;
  font-size: 16px; font-weight: 700;
  color: var(--text-strong);
}
.sol-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 13.5px;
  line-height: 1.7;
}
.sol-arch {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  background: var(--bg-soft);
}
.sol-arch h4 {
  margin: 0 0 18px;
  font-size: 17px; font-weight: 700;
  color: var(--text-strong);
}
.sol-arch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}
.sol-arch-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
  transition: border-color .2s;
}
.sol-arch-item:hover { border-color: var(--primary-border); }
.sol-arch-item b {
  display: block;
  font-size: 14px; font-weight: 600;
  color: var(--text-strong);
  margin-bottom: 4px;
}
.sol-arch-item span {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.5;
}
.sol-arch-stack {
  display: flex; flex-direction: column; gap: 8px;
}
.sol-arch-layer {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 18px;
  display: flex; align-items: baseline; gap: 12px;
  transition: border-color .2s;
}
.sol-arch-layer:hover { border-color: var(--primary-border); }
.sol-arch-layer b {
  font-size: 13.5px; font-weight: 600;
  color: var(--primary);
  white-space: nowrap;
  flex-shrink: 0;
}
.sol-arch-layer span {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
}
.sol-cta-row {
  display: flex; gap: 12px;
  justify-content: center;
  padding-top: 8px;
}

@media (max-width: 1100px) {
  .sol-grid-2 { grid-template-columns: 1fr; }
  .sol-grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .sol-grid-3 { grid-template-columns: 1fr; }
  .sol-arch-grid { grid-template-columns: 1fr 1fr; }
  .sol-arch-layer { flex-direction: column; gap: 4px; }
}

/* ============================================================
   Video fullscreen modal
   ============================================================ */
.boagent-landing .video-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0,0,0,.85);
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}
.boagent-landing .video-modal.open {
  display: flex;
}
.boagent-landing .video-modal video {
  max-width: 92vw;
  max-height: 90vh;
  border-radius: 12px;
  box-shadow: 0 0 80px rgba(0,0,0,.5);
}
.boagent-landing .video-modal-close {
  position: absolute;
  top: 20px;
  right: 28px;
  background: rgba(255,255,255,.15);
  border: none;
  color: #fff;
  font-size: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .15s;
}
.boagent-landing .video-modal-close:hover {
  background: rgba(255,255,255,.3);
}