/* paibao.ai chrome: header, menus and footer. Tokens come from theme.css. */
.pb-skip { position: absolute; left: -9999px; top: 0; }
.pb-skip:focus { left: 16px; top: 12px; z-index: 100; padding: 8px 12px; background: var(--color-primary); color: #fff; border-radius: 6px; }

.pb-header { position: sticky; top: 0; z-index: 50; background: rgba(15, 15, 16, 0.82); backdrop-filter: saturate(1.4) blur(14px); border-bottom: 1px solid var(--color-border); }
.pb-nav { max-width: var(--wide-width); margin: 0 auto; padding: 0 20px; height: 64px; display: flex; align-items: center; gap: 28px; }
.pb-brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 18px; letter-spacing: -0.02em; color: var(--color-text); }
.pb-links { display: flex; align-items: center; gap: 22px; flex: 1; font-size: 14px; color: var(--color-muted); }
.pb-links > a, .pb-menu summary { color: var(--color-muted); transition: color 150ms ease; cursor: pointer; }
.pb-links > a:hover, .pb-menu summary:hover, .pb-menu[open] summary { color: var(--color-text); }
.pb-links > a:focus-visible, .pb-menu summary:focus-visible, .pb-actions a:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 4px; border-radius: 4px; }

.pb-menu { position: relative; }
.pb-menu summary { list-style: none; }
.pb-menu summary::-webkit-details-marker { display: none; }
.pb-dropdown { position: absolute; top: calc(100% + 18px); left: -16px; width: 380px; padding: 10px; display: grid; gap: 2px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 14px; box-shadow: var(--shadow); }
.pb-dropdown a { display: grid; gap: 2px; padding: 10px 12px; border-radius: 10px; }
.pb-dropdown a:hover { background: rgba(254, 44, 85, 0.08); }
.pb-dropdown strong { color: var(--color-text); font-size: 14px; }
.pb-dropdown small { color: var(--color-muted); font-size: 12.5px; }

.pb-actions { display: flex; align-items: center; gap: 14px; font-size: 14px; }
.pb-signin { color: var(--color-muted); }
.pb-signin:hover { color: var(--color-text); }
.pb-cta { display: inline-flex; align-items: center; gap: 6px; padding: 9px 16px; border-radius: 999px; background: var(--color-primary); color: #fff; font-weight: 700; font-size: 14px; transition: transform 150ms ease, box-shadow 150ms ease, background 150ms ease; }
.pb-cta:hover { background: var(--color-primary-light); transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.pb-cta:active { transform: translateY(0); }
/* Product-led entry (audit P0-1, wiring-patterns.html P1): outline pill, same height as pb-cta. */
.pb-trial { display: inline-flex; align-items: center; gap: 6px; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--color-border-strong, var(--color-border)); color: var(--color-text); font-weight: 600; font-size: 14px; transition: border-color 150ms ease, color 150ms ease, transform 150ms ease; }
.pb-trial:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-1px); }

.pb-mobile { display: none; margin-left: auto; }
.pb-mobile summary { list-style: none; cursor: pointer; padding: 8px 12px; border: 1px solid var(--color-border); border-radius: 8px; font-size: 14px; }
.pb-mobile summary::-webkit-details-marker { display: none; }
.pb-mobile > div { position: absolute; left: 0; right: 0; top: 64px; max-height: calc(100vh - 64px); overflow-y: auto; padding: 16px 20px 28px; display: grid; gap: 4px; background: var(--color-bg); border-bottom: 1px solid var(--color-border); }
.pb-mobile > div a { padding: 10px 0; color: var(--color-text); }
.pb-mobile > div p { margin-top: 14px; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-muted); }
.pb-mobile .pb-cta { justify-content: center; padding: 12px 16px; color: #fff; }

.pb-footer { margin-top: 64px; border-top: 1px solid var(--color-border); background: #0a0a0b; }
.pb-footer-main { max-width: var(--wide-width); margin: 0 auto; padding: 56px 20px 40px; display: grid; grid-template-columns: 1fr 1.2fr; gap: 48px; }
.pb-footer-brand p { margin-top: 14px; max-width: 34ch; color: var(--color-muted); font-size: 14px; }
.pb-footer-cta { padding: 28px; border: 1px solid var(--color-border); border-radius: 16px; background: linear-gradient(135deg, rgba(254, 44, 85, 0.12), rgba(37, 244, 238, 0.05)); }
.pb-footer-cta h2 { font-size: 22px; }
.pb-footer-cta p { margin: 8px 0 18px; color: var(--color-muted); font-size: 14px; }
.pb-footer-legal { max-width: var(--wide-width); margin: 0 auto; padding: 18px 20px 32px; display: flex; flex-wrap: wrap; gap: 8px 22px; font-size: 13px; color: var(--color-muted); border-top: 1px solid var(--color-border); }
.pb-footer-legal a:hover { color: var(--color-text); }

@media (max-width: 960px) {
	.pb-links, .pb-actions { display: none; }
	.pb-mobile { display: block; }
	.pb-footer-main { grid-template-columns: 1fr; gap: 28px; padding-top: 40px; }
}
@media (prefers-reduced-motion: reduce) {
	.pb-cta, .pb-links > a { transition: none; }
	.pb-cta:hover { transform: none; }
}

/* Shared page templates (hero, sections, buttons, cards, lead capture) in the Paibao palette. */
:root { --pb-pad: 20px; --pb-max: var(--wide-width); }
.button { min-height: 46px; padding: 12px 20px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; border: 1px solid transparent; border-radius: 999px; font-size: 14px; font-weight: 700; white-space: nowrap; transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease; }
.button:hover, .button:focus-visible { transform: translateY(-1px); }
.button:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; }
.button-primary { color: #fff; background: var(--color-primary); }
.button-primary:hover, .button-primary:focus-visible { background: var(--color-primary-light); box-shadow: var(--shadow-lg); }
.button-ghost { border-color: var(--color-border); color: var(--color-text); }
.button-ghost:hover, .button-ghost:focus-visible { border-color: var(--color-text); }
.button-large { min-height: 56px; padding: 16px 28px; font-size: 15px; }
.eyebrow { display: flex; align-items: center; gap: 10px; margin: 0 0 18px; color: var(--color-accent); font-size: 11px; font-weight: 800; letter-spacing: 0.16em; text-transform: uppercase; }
.eyebrow span { width: 28px; height: 2px; background: currentColor; }
.eyebrow-dark { color: var(--color-primary-light); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }

.breadcrumb { max-width: var(--pb-max); margin: 0 auto; padding: 18px var(--pb-pad); display: flex; gap: 10px; overflow: hidden; color: var(--color-muted); font-size: 12px; white-space: nowrap; }
.breadcrumb a { color: var(--color-text); font-weight: 700; }
.breadcrumb span:last-child { overflow: hidden; text-overflow: ellipsis; }

.page-hero { position: relative; overflow: hidden; padding: clamp(64px, 8vw, 112px) max(var(--pb-pad), calc((100vw - var(--pb-max)) / 2)); display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 340px); align-items: center; gap: clamp(28px, 4vw, 56px); background: radial-gradient(1200px 500px at 85% -10%, rgba(254, 44, 85, 0.18), transparent 60%), radial-gradient(900px 420px at -10% 110%, rgba(37, 244, 238, 0.08), transparent 60%); }
.hero-grid { position: absolute; inset: 0; opacity: 0.4; background-image: linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(to bottom, #000, transparent 85%); }
.page-hero-copy, .signal-board { position: relative; z-index: 1; }
.page-hero h1 { max-width: 880px; margin: 0; font-size: clamp(40px, 4.6vw, 66px); line-height: 1.04; letter-spacing: -0.045em; }
.page-hero-copy > p:last-of-type { max-width: 680px; margin: 22px 0 0; color: var(--color-muted); font-size: 17px; line-height: 1.7; }
.signal-board { padding: 28px; border: 1px solid var(--color-border); border-top: 3px solid var(--color-primary); border-radius: 16px; background: rgba(24, 24, 27, 0.82); box-shadow: var(--shadow); }
.signal-label { display: block; color: var(--color-accent); font-family: var(--font-mono, monospace); font-size: 10px; letter-spacing: 0.14em; }
.signal-board > strong { display: block; margin: 30px 0 18px; font-size: 24px; line-height: 1.25; }
.signal-board > div { display: flex; flex-wrap: wrap; gap: 8px; }
.signal-board > div span { padding: 6px 10px; border: 1px solid var(--color-border); border-radius: 999px; color: var(--color-muted); font-size: 12px; }
.signal-board small { display: block; margin-top: 26px; padding-top: 14px; border-top: 1px solid var(--color-border); color: var(--color-muted); font-size: 12px; }

.section-intro h2, .final-cta h2, .content-section h2 { margin: 0; font-size: clamp(30px, 3.6vw, 52px); line-height: 1.08; letter-spacing: -0.035em; }
.content-section { max-width: var(--pb-max); margin: 0 auto; padding: clamp(64px, 8vw, 112px) var(--pb-pad); }
.content-section > header, .content-section > .container > header { max-width: 980px; margin-bottom: 44px; }
.content-section header > p:last-child { max-width: 700px; margin: 18px 0 0; color: var(--color-muted); font-size: 16px; }

.final-cta { max-width: var(--pb-max); margin: 0 auto; padding: clamp(40px, 6vw, 72px); display: flex; align-items: flex-end; justify-content: space-between; gap: 32px; border: 1px solid var(--color-border); border-radius: 20px; background: linear-gradient(120deg, rgba(254, 44, 85, 0.16), rgba(24, 24, 27, 0.9) 55%, rgba(37, 244, 238, 0.07)); }
.final-cta > div { min-width: 0; flex: 1; }
.final-cta p:last-child { max-width: 640px; margin: 18px 0 0; color: var(--color-muted); }
.lead-capture-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.lead-form { display: grid; gap: 14px; flex: 1; min-width: min(100%, 420px); }
.lead-form span { color: var(--color-muted); font-size: 13px; }
.lead-form input, .lead-form textarea { color: #0f0f10; }

.faq-list { border-top: 1px solid var(--color-border); }
.faq-list details { border-bottom: 1px solid var(--color-border); }
.faq-list summary { position: relative; padding: 22px 48px 22px 0; cursor: pointer; list-style: none; font-size: 17px; font-weight: 700; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after { position: absolute; top: 18px; right: 4px; color: var(--color-primary); content: "+"; font-size: 26px; font-weight: 400; }
.faq-list details[open] summary::after { content: "−"; }
.faq-list p { max-width: 820px; margin: 0; padding: 0 0 24px; color: var(--color-muted); font-size: 15px; }

@media (max-width: 960px) {
	.page-hero { grid-template-columns: 1fr; }
	.signal-board { max-width: 640px; }
	.final-cta { flex-direction: column; align-items: stretch; }
}
@media (max-width: 560px) {
	.hero-actions, .hero-actions .button, .lead-capture-actions .button { width: 100%; }
	.page-hero h1 { font-size: clamp(34px, 10vw, 46px); }
}