:root {
  --gb-bg: #fff;
  --gb-soft: #f6f8fb;
  --gb-card: #fff;
  --gb-ink: #102033;
  --gb-muted: #667488;
  --gb-border: #d8e0ea;
  --gb-blue: #2563eb;
  --gb-green: #00a878;
  --gb-red: #d92d20;
  --gb-radius: 12px;
  --gb-shadow: 0 18px 48px rgba(16, 32, 51, .12);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--gb-bg); color: var(--gb-ink); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans TC", sans-serif; line-height: 1.7; }
img { max-width: 100%; height: auto; }
a { color: var(--gb-blue); }
button, input, select, textarea { font: inherit; }
:where(a, button, input, select, textarea):focus-visible { outline: 3px solid rgba(37, 99, 235, .35); outline-offset: 3px; }
.screen-reader-text { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(1px, 1px, 1px, 1px); clip-path: inset(50%); white-space: nowrap; }
.screen-reader-text:focus { width: auto; height: auto; overflow: visible; clip: auto; clip-path: none; }
.gb-shell { width: min(1120px, calc(100% - 40px)); margin-inline: auto; }
.gb-header { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--gb-border); background: rgba(255,255,255,.96); backdrop-filter: blur(14px); }
.gb-header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.gb-brand { color: var(--gb-ink); font-size: 22px; font-weight: 850; text-decoration: none; letter-spacing: -.04em; }
.gb-menu { display: flex; align-items: center; flex-wrap: wrap; gap: 4px; margin: 0; padding: 0; list-style: none; }
.gb-menu a { display: block; padding: 9px 11px; border-radius: 999px; color: var(--gb-ink); font-size: 14px; font-weight: 700; text-decoration: none; transition: background .18s ease, color .18s ease; }
.gb-menu a:hover { background: var(--gb-soft); color: var(--gb-blue); }
.gb-menu-login a { border: 1px solid var(--gb-blue); color: var(--gb-blue); }
.gb-hero { overflow: hidden; border-bottom: 1px solid var(--gb-border); background: linear-gradient(135deg, #fff 0%, #f6f8fb 70%, #eef4ff 100%); }
.gb-hero-grid { min-height: 650px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(480px, 1.08fr); align-items: center; gap: 48px; padding-block: 80px; }
.gb-eyebrow { margin: 0 0 12px; color: var(--gb-blue); font-size: 13px; font-weight: 850; letter-spacing: .12em; }
.gb-hero h1 { max-width: 680px; margin: 0 0 24px; font-size: clamp(40px, 4.2vw, 52px); line-height: 1.14; letter-spacing: -.045em; text-wrap: balance; }
.gb-lead { max-width: 680px; color: var(--gb-muted); font-size: clamp(17px, 2vw, 20px); }
.gb-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.gb-button { min-height: 46px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--gb-border); border-radius: 999px; padding: 9px 20px; font-weight: 800; text-decoration: none; transition: transform .18s ease, border-color .18s ease, background .18s ease; }
.gb-button:hover { transform: translateY(-2px); border-color: var(--gb-blue); }
.gb-button-primary { border-color: var(--gb-blue); background: var(--gb-blue); color: #fff; }
.gb-button-primary:hover { background: #1d4ed8; color: #fff; }
.gb-button-secondary { background: #fff; color: var(--gb-ink); }
.gb-agent-stage { overflow: hidden; border: 1px solid var(--gb-border); border-radius: 14px; background-color: rgba(255,255,255,.92); background-image: radial-gradient(circle at 50% 36%, rgba(37,99,235,.15), transparent 48%), linear-gradient(rgba(216,224,234,.38) 1px, transparent 1px), linear-gradient(90deg, rgba(216,224,234,.38) 1px, transparent 1px); background-size: auto, 24px 24px, 24px 24px; box-shadow: var(--gb-shadow); }
.hero-agent-wall { min-height: 390px; display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)); align-items: end; gap: 2px; padding: 36px 14px 0; }
.hero-agent { min-width: 0; height: 320px; display: flex; align-items: flex-end; justify-content: center; }
.hero-agent img { display: block; width: 100%; height: 100%; object-fit: contain; object-position: center bottom; }
.gb-agent-stage-label { border-top: 1px solid var(--gb-border); background: #fff; padding: 14px 18px; color: var(--gb-ink); font-weight: 850; text-align: center; }
.gb-section { padding-block: 88px; }
.gb-section-soft { background: var(--gb-soft); }
.gb-section-heading { max-width: 760px; margin-bottom: 32px; }
.gb-section-heading h2, .gb-community h2, .gb-speaker-preview h2 { margin: 0 0 12px; font-size: clamp(30px, 4vw, 46px); line-height: 1.18; letter-spacing: -.035em; }
.gb-section-heading p:not(.gb-eyebrow), .gb-speaker-preview p, .gb-community p { color: var(--gb-muted); }
.gb-card-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.gb-card { position: relative; min-height: 280px; overflow: hidden; border: 1px solid var(--gb-border); border-radius: var(--gb-radius); background: var(--gb-card); padding: 24px; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.gb-card:hover, .gb-post-card:hover { transform: translateY(-3px); border-color: var(--gb-blue); box-shadow: var(--gb-shadow); }
.gb-card h3 { margin: 10px 0 8px; font-size: 20px; }
.gb-card p { position: relative; z-index: 1; color: var(--gb-muted); }
.gb-card-number { color: var(--gb-blue) !important; font-weight: 850; }
.gb-card-agent { position: absolute; right: 8px; bottom: 0; width: 92px; height: 190px; object-fit: contain; object-position: center bottom; opacity: .10; }
.gb-seven-cards .gb-card:last-child { grid-column: span 2; }
.gb-section-cta { margin-top: 28px; }
.gb-check-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; padding: 0; list-style: none; }
.gb-check-grid li { border: 1px solid var(--gb-border); border-radius: var(--gb-radius); background: #fff; padding: 20px; font-weight: 800; }
.gb-check-grid li::before { content: "✓"; margin-right: 10px; color: var(--gb-green); }
.gb-post-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.gb-post-card, .gb-empty { overflow: hidden; border: 1px solid var(--gb-border); border-radius: var(--gb-radius); background: #fff; transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease; }
.gb-post-image { display: block; aspect-ratio: 16/9; overflow: hidden; background: var(--gb-soft); }
.gb-post-image img { width: 100%; height: 100%; object-fit: cover; }
.gb-post-body, .gb-empty { padding: 22px; }
.gb-post-card h2, .gb-post-card h3 { margin: 6px 0 10px; line-height: 1.3; }
.gb-post-card h2 a, .gb-post-card h3 a { color: var(--gb-ink); text-decoration: none; }
.gb-post-meta { color: var(--gb-muted); font-size: 13px; font-weight: 700; }
.gb-text-link { font-weight: 800; }
.gb-speaker-preview { display: grid; grid-template-columns: 1fr 280px; align-items: center; gap: 48px; }
.gb-speaker-preview-agent { display: block; width: 180px; height: 300px; margin: 0 auto; object-fit: contain; object-position: center bottom; }
.gb-speakers-header { max-width: 760px; margin-bottom: 36px; }
.gb-speakers-header h1 { margin: 0 0 14px; font-size: clamp(38px, 6vw, 64px); line-height: 1.12; letter-spacing: -.045em; }
.gb-speakers-intro { color: var(--gb-muted); font-size: 18px; }
.gb-speaker-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.gb-speaker-card { overflow: hidden; border: 1px solid var(--gb-border); border-radius: 14px; background: linear-gradient(180deg, #eff6ff 0%, #fff 72%); box-shadow: 0 12px 32px rgba(16,32,51,.08); }
.gb-speaker-card:nth-child(2) { background: linear-gradient(180deg, #ecfdf5 0%, #fff 72%); }
.gb-speaker-image-wrap { height: 360px; display: flex; align-items: flex-end; justify-content: center; padding: 24px 24px 0; border-bottom: 1px solid var(--gb-border); }
.gb-speaker-image-wrap img { display: block; width: 100%; height: 100%; object-fit: contain; object-position: center bottom; }
.gb-speaker-copy { padding: 22px; }
.gb-speaker-copy h2 { margin: 0 0 6px; font-size: 26px; }
.gb-speaker-copy p { margin: 0; color: var(--gb-muted); }
.gb-community { background: #102033; color: #fff; }
.gb-community-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.gb-community .gb-eyebrow { color: #93c5fd; }
.gb-community p { margin-bottom: 0; color: #cbd5e1; }
.gb-risk-note { border-top: 4px solid var(--gb-red); background: #fff5f4; padding-block: 28px; }
.gb-risk-note strong { color: var(--gb-red); }
.gb-risk-note p { margin: 6px 0 0; color: #5b2a25; }
.gb-content-wrap { min-height: 65vh; padding-block: 72px; }
.gb-entry { max-width: 800px; margin-inline: auto; }
.gb-entry h1, .gb-archive-header h1 { font-size: clamp(38px, 6vw, 64px); line-height: 1.12; letter-spacing: -.045em; }
.gb-entry-content > * { max-width: 760px; }
.gb-entry-content > .alignwide { max-width: 1120px; }
.gb-entry-content h2 { margin-top: 48px; font-size: 30px; }
.gb-entry-content h3 { margin-top: 30px; }
.gb-entry-content li { margin-bottom: 8px; }
.gb-featured { margin-block: 28px; }
.gb-comments { max-width: 800px; margin: 56px auto 0; border-top: 1px solid var(--gb-border); padding-top: 32px; }
.gb-comments textarea, .gb-comments input { max-width: 100%; border: 1px solid var(--gb-border); border-radius: 10px; padding: 10px 12px; }
.gb-comments .submit { border: 0; border-radius: 999px; background: var(--gb-blue); color: #fff; padding: 11px 20px; font-weight: 800; cursor: pointer; }
.gb-footer { border-top: 1px solid var(--gb-border); background: var(--gb-soft); }
.gb-footer-inner { min-height: 96px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: var(--gb-muted); }
.gb-footer p { margin: 0; }
.gb-footer nav { display: flex; gap: 18px; }
@media (max-width: 980px) {
  .gb-header { position: static; }
  .gb-header-inner { align-items: flex-start; flex-direction: column; padding-block: 16px; }
  .gb-hero-grid { grid-template-columns: 1fr; padding-block: 64px; }
  .gb-agent-stage { min-height: 0; }
  .hero-agent-wall { min-height: 520px; grid-template-columns: repeat(5, minmax(0, 1fr)); padding-top: 24px; }
  .hero-agent { height: 240px; }
  .gb-card-grid, .gb-post-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gb-check-grid, .gb-speaker-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  .gb-shell { width: min(100% - 28px, 1120px); }
  .gb-menu { gap: 2px; }
  .gb-menu a { padding: 7px 8px; font-size: 13px; }
  .gb-hero-grid { min-height: auto; padding-block: 52px; }
  .gb-hero h1 { font-size: 42px; }
  .gb-agent-stage { min-height: 0; margin-inline: 0; }
  .hero-agent-wall { min-height: 690px; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px; padding: 20px 8px 0; }
  .hero-agent { height: 220px; }
  .gb-section { padding-block: 58px; }
  .gb-card-grid, .gb-post-grid, .gb-check-grid, .gb-speaker-preview, .gb-speaker-grid { grid-template-columns: 1fr; }
  .gb-seven-cards .gb-card:last-child { grid-column: auto; }
  .gb-community-inner, .gb-footer-inner { align-items: flex-start; flex-direction: column; padding-block: 28px; }
}