/* Product-first direction. Reference lock: docs/design/MARKETING_REFERO.md */
@font-face { font-family: PlexMono; src: url('assets/IBMPlexMono-Regular.woff2') format('woff2'); font-weight: 400; font-display: swap; }
:root {
  --ink: #111315; --muted: #565b61; --paper: #fff; --surface: #f4f5f6;
  --white: #fff; --accent: #b63a29; --accent-hover: #922c1e;
  --line: #dfe2e5; --selected: #e9ebed; --max: 1280px;
  --sans: 'Helvetica Neue', Arial, sans-serif; --mono: PlexMono, ui-monospace, monospace;
  --shadow: 0 24px 50px -28px #11131540, 0 2px 8px #11131508;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 100px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 16px/1.6 var(--sans); }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 5px; }
button { font: inherit; }
img { display: block; max-width: 100%; height: auto; }
p, h1, h2, h3, figure { margin: 0; }
h1, h2, h3 { text-wrap: balance; overflow-wrap: break-word; }
p { text-wrap: pretty; }
[hidden] { display: none !important; }
a:focus-visible, button:focus-visible, summary:focus-visible, [tabindex]:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
.wrap { width: min(var(--max), calc(100% - 96px)); margin-inline: auto; }
.section { padding-block: 96px; }
.eyebrow, .number { font-family: var(--mono); font-size: 11px; line-height: 1.6; letter-spacing: .07em; text-transform: uppercase; }
.eyebrow { margin-bottom: 24px; color: var(--muted); }
.number { color: var(--muted); }
h2 { font-size: clamp(34px, 3.8vw, 54px); font-weight: 600; line-height: 1.04; letter-spacing: -.045em; }
h3 { font-size: 24px; font-weight: 600; line-height: 1.2; letter-spacing: -.025em; }
.header { min-height: 80px; padding: 16px max(48px, calc((100% - var(--max)) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 32px; border-bottom: 1px solid var(--line); background: var(--paper); position: sticky; top: 0; z-index: 20; }
.brand { line-height: 1; display: inline-flex; align-items: center; flex: none; }
.brand:hover { text-decoration: none; }
.roan-wordmark { --s: 36px; display: inline-flex; align-items: baseline; gap: calc(var(--s) * .1); color: var(--ink); line-height: 1; }
.roan-wordmark span { font-size: var(--s); font-weight: 800; letter-spacing: -.06em; line-height: .85; }
.roan-wordmark i { display: block; width: calc(var(--s) * .12); height: calc(var(--s) * .12); background: var(--accent); }
.desktop-nav { display: flex; align-items: center; gap: 32px; font-size: 14px; }
.desktop-nav a, .lang-switch { display: inline-flex; align-items: center; min-height: 44px; }
.header-actions { display: flex; align-items: center; gap: 28px; }
.lang-switch { font-size: 13px; color: var(--muted); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 28px; padding: 15px 24px; min-height: 52px; border: 1px solid transparent; border-radius: 4px; font-size: 14px; font-weight: 600; line-height: 1.4; transition: background-color .16s, border-color .16s; }
.button:hover { text-decoration: none; }
.button-dark { background: var(--ink); color: var(--white); }
.button-dark:hover { background: #33383c; }
.button-light { background: var(--white); border-color: #b8bdc2; }
.button-light:hover { background: var(--surface); border-color: var(--ink); }
.button-accent { background: var(--accent); color: var(--white); }
.button-accent:hover { background: var(--accent-hover); }
.button span { font-size: 19px; line-height: 1; }
.nav-cta { padding: 10px 18px; min-height: 44px; font-size: 13px; }
.mobile-menu { display: none; }
.hero { padding-top: 68px; }
.hero-grid { max-width: 1000px; margin-inline: auto; text-align: center; }
.hero-grid .eyebrow { margin-bottom: 26px; }
.hero h1 { font-size: clamp(58px, 6.9vw, 100px); line-height: .99; letter-spacing: -.065em; font-weight: 600; }
.hero-copy { max-width: 620px; margin: 26px auto 0; }
.hero-copy > p { font-size: 19px; line-height: 1.5; color: var(--muted); }
.actions { display: flex; gap: 12px; align-items: center; justify-content: center; flex-wrap: wrap; margin: 28px 0; }
.hero-routes { display: flex; justify-content: center; gap: 28px; margin: 0 auto; }
.hero-routes a { display: flex; align-items: center; flex-wrap: wrap; gap: 5px 10px; font-size: 12px; min-height: 44px; }
.hero-routes a + a { border-left: 1px solid var(--line); padding-left: 28px; }
.hero-routes span { color: var(--muted); }
.hero-routes strong { font-weight: 600; }
.hero-product { margin-top: 40px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); padding: 0 20px 20px; box-shadow: var(--shadow); }
.product-label { display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 16px 0; color: var(--muted); font-size: 12px; }
.product-label > span:first-child { display: flex; align-items: center; gap: 8px; }
.product-label > span:last-child { font: 10px var(--mono); letter-spacing: .06em; }
.status-dot { width: 6px; height: 6px; background: var(--ink); display: inline-block; border-radius: 50%; }
.hero-product > a { display: block; max-height: 470px; overflow: hidden; border: 1px solid var(--line); border-radius: 3px; }
.hero-product img { width: 100%; }
.principles { display: grid; grid-template-columns: repeat(4, 1fr); border-bottom: 1px solid var(--line); margin-top: 24px; }
.principles span { font-size: 12px; padding: 22px 16px; text-align: center; color: var(--muted); }
.text-link { display: inline-flex; gap: 16px; align-items: center; font-size: 14px; font-weight: 600; min-height: 44px; }
.small { font-size: 13px; color: var(--muted); }
.intro { padding-bottom: 72px; }
.intro-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 96px; align-items: end; }
.intro-grid > p { max-width: 420px; color: var(--muted); }
.benefits { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; margin-top: 48px; }
.benefits article { padding-top: 24px; border-top: 1px solid var(--ink); }
.benefits h3 { margin: 22px 0 14px; font-size: 22px; }
.benefits p { font-size: 15px; color: var(--muted); }
.section-heading { display: flex; gap: 64px; justify-content: space-between; align-items: end; margin-bottom: 40px; }
.section-heading > p { max-width: 360px; flex: 0 1 360px; color: var(--muted); }
.product-section { background: var(--surface); padding-bottom: 64px; }
.tour-tabs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-bottom: 1px solid #c6cbd0; }
.tour-tabs button { display: flex; gap: 16px; text-align: left; align-items: center; background: transparent; border: 0; border-bottom: 3px solid transparent; padding: 20px 8px; color: var(--muted); font: 12px var(--mono); cursor: pointer; min-height: 60px; }
.tour-tabs button span { font: 600 16px var(--sans); }
.tour-tabs button[aria-selected=true] { color: var(--accent); border-bottom-color: var(--accent); }
.tour-tabs button:hover { background: var(--selected); }
.tour-panel { display: grid; grid-template-columns: minmax(0, .7fr) minmax(0, 1.7fr); align-items: center; gap: 40px; margin-top: 32px; }
.tour-copy { padding: 16px 0; }
.tour-copy h3 { font-size: 28px; margin-bottom: 20px; }
.tour-copy p { font-size: 15px; color: var(--muted); }
.tour-copy a { display: inline-flex; align-items: center; min-height: 44px; font-size: 12px; text-decoration: underline; text-underline-offset: 5px; }
.tour-copy > a, .tour-links { margin-top: 20px; }
.tour-links { display: flex; flex-direction: column; gap: 0; }
.tour-panel img { border: 1px solid #d4d7da; border-radius: 4px; width: 100%; box-shadow: var(--shadow); }
.caption { color: var(--muted); font-size: 11px; margin-top: 24px; }
.feature-index { padding-block: 64px 96px; }
.feature-index .section-heading h2 { font-size: 34px; max-width: 500px; }
.feature-index .section-heading h2 br { display: none; }
.feature-index .section-heading > p { font-size: 14px; }
.practice-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 40px; }
.practice-grid article { padding-block: 28px; border-top: 1px solid var(--line); }
.practice-grid h3 { margin: 16px 0; }
.practice-grid article > p:not(.number) { color: var(--muted); font-size: 16px; }
.practice-grid ul { padding: 0; list-style: none; font-size: 14px; margin: 24px 0 0; }
.practice-grid li { padding: 10px 0; border-bottom: 1px solid var(--line); display: flex; gap: 14px; }
.practice-grid li::before { content: '↳'; }
.feature-index .practice-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 28px; }
.feature-index .practice-grid h3 { font-size: 21px; margin-top: 0; }
.feature-index .practice-grid p { font-size: 14px; }
.mobile-offline { border-top: 1px solid var(--line); }
.mobile-offline-grid { display: grid; grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, .8fr)); gap: 32px; align-items: start; }
.mobile-offline-copy { padding: 32px 40px 0 0; }
.mobile-offline-copy h3 { margin-bottom: 14px; }
.mobile-offline-copy p { color: var(--muted); margin-bottom: 28px; font-size: 15px; }
.mobile-offline-grid figure { min-width: 0; padding: 16px; background: var(--surface); border-radius: 8px; }
.mobile-offline-grid img { width: 100%; border: 1px solid var(--line); border-radius: 4px; }
.mobile-offline-grid figure:last-child { margin-top: 48px; }
.mobile-offline-grid figcaption { font-size: 12px; margin-top: 16px; color: var(--muted); }
.ai-section { background: var(--surface); }
.ai-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 96px; }
.lead { font-size: 18px; max-width: 440px; color: var(--muted); margin: 24px 0 32px; }
.ai-list article { display: flex; gap: 24px; padding: 24px 0; border-top: 1px solid #c6cbd0; }
.ai-list article:first-child { padding-top: 0; border-top: 0; }
.ai-list article > span { font: 12px var(--mono); color: var(--muted); padding-top: 5px; }
.ai-list p { color: var(--muted); font-size: 15px; margin-top: 12px; }
.platform-options { gap: 24px; }
.platform-options article { padding: 32px; border: 1px solid #b8bdc2; border-radius: 4px; display: flex; flex-direction: column; }
.platform-options h3 { font-size: 32px; }
.platform-options article > p:not(.number) { font-size: 15px; }
.platform-options article > .text-link { margin-top: 16px; align-self: start; }
.route-picture { margin-top: 28px; padding: 24px 16px; background: var(--surface); text-align: center; }
.route-picture > strong { display: block; width: fit-content; margin: auto; padding: 6px 32px; background: var(--ink); color: var(--white); font-size: 24px; letter-spacing: -.05em; }
.route-services { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; padding-top: 28px; position: relative; }
.route-services::before { content: ''; position: absolute; top: 0; left: 50%; height: 14px; border-left: 1px solid #a7adb3; }
.route-services::after { content: ''; position: absolute; top: 14px; left: calc((100% - 16px) / 6); right: calc((100% - 16px) / 6); border-top: 1px solid #a7adb3; }
.route-services span { padding: 12px 4px; border: 1px solid #c6cbd0; background: var(--paper); font-size: 12px; overflow-wrap: anywhere; position: relative; }
.route-services span::before { content: ''; position: absolute; top: -15px; left: 50%; height: 14px; border-left: 1px solid #a7adb3; }
#platform-byok .route-services span { border-style: dashed; }
.route-picture p { font-size: 12px; color: var(--muted); margin-top: 16px; }
.platform-price { font-weight: 600; padding-top: 24px; margin-top: auto; }
.route-note { margin-top: 24px; padding: 20px 0; color: var(--muted); font-size: 14px; }
.platform-detail p { max-width: 75ch; }
#practices { border-top: 1px solid var(--line); }
.group-layout { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 64px; align-items: center; }
.group-layout .practice-grid { grid-template-columns: 1fr; gap: 0; }
.group-layout .practice-grid h3 { font-size: 24px; }
.group-layout .practice-grid p { font-size: 15px; }
.group-screen { padding: 20px; background: var(--surface); border-radius: 8px; }
.group-screen img { border: 1px solid var(--line); border-radius: 4px; box-shadow: var(--shadow); }
.group-screen figcaption { font-size: 12px; color: var(--muted); margin-top: 20px; }
.details-section { border-block: 1px solid var(--line); }
.detail-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 96px; }
.detail-grid > div > p:last-child { max-width: 350px; color: var(--muted); margin-top: 24px; }
.faqs details { border-bottom: 1px solid var(--line); }
.faqs details:first-child { border-top: 1px solid var(--line); }
.faqs summary { cursor: pointer; font-size: 16px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 24px; align-items: center; min-height: 72px; padding-block: 20px; }
.faqs summary::after { content: '+'; font: 20px var(--mono); flex: none; }
.faqs details[open] summary::after { content: '−'; }
.faqs summary::-webkit-details-marker { display: none; }
.faqs details[open] { padding-bottom: 24px; }
.faqs p { margin-top: 12px; font-size: 15px; color: var(--muted); }
.closing { text-align: center; padding-block: 112px; }
.closing h2 { font-size: clamp(42px, 5.8vw, 80px); margin-bottom: 32px; }
.closing .small { margin: 20px auto 0; }
.footer { background: var(--surface); border-top: 1px solid var(--line); }
.footer__main { display: flex; align-items: start; justify-content: space-between; gap: 48px; padding-block: 48px; }
.footer__identity { max-width: 340px; }
.footer .roan-wordmark { --s: 42px; }
.footer__identity p { margin-top: 20px; color: var(--muted); font-size: 13px; }
.footer__nav { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 28px; font-size: 13px; }
.footer__nav a, .footer__open { display: inline-flex; align-items: center; min-height: 44px; }
.footer__open { font-size: 13px; font-weight: 600; flex: none; }
.footer__bottom { padding-block: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.lang-notice { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 0 24px; padding: 4px 18px; background: var(--surface); font-size: 13px; border-bottom: 1px solid var(--line); }
.lang-notice a { display: inline-flex; align-items: center; min-height: 44px; text-decoration: underline; text-underline-offset: 4px; }
.skip { position: fixed; left: 20px; top: -100px; z-index: 30; padding: 12px 20px; background: var(--ink); color: var(--white); }
.skip:focus { top: 12px; }
@media (max-width: 1050px) {
  .wrap { width: calc(100% - 56px); }
  .header { padding-inline: 28px; gap: 20px; }
  .desktop-nav { gap: 20px; }
  .header-actions { gap: 16px; }
  .section { padding-block: 72px; }
  .intro-grid, .ai-grid, .detail-grid, .group-layout { gap: 40px; }
  .section-heading { gap: 32px; }
  .section-heading > p { flex-basis: 300px; }
  .hero-product > a { max-height: 380px; }
  .tour-panel { gap: 28px; grid-template-columns: minmax(0, .85fr) minmax(0, 1.4fr); }
  .tour-tabs button { gap: 10px; }
  .tour-tabs button span { font-size: 14px; }
  .feature-index .practice-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mobile-offline-copy { padding-right: 0; padding-top: 0; }
  .mobile-offline-grid { gap: 20px; }
  .platform-options article { padding: 24px; }
  .footer__nav { flex-direction: column; align-items: start; gap: 0; }
}
@media (max-width: 760px) {
  .header { display: grid; grid-template-columns: auto auto minmax(0, 1fr); gap: 8px; padding: 10px 18px; min-height: 64px; }
  .header > .brand { grid-column: 1; grid-row: 1; }
  .header .roan-wordmark { --s: 28px; }
  .desktop-nav { display: none; }
  .header-actions { grid-column: 3; grid-row: 1; justify-content: end; gap: 12px; }
  .lang-switch { font-size: 12px; }
  .nav-cta { font-size: 12px; padding: 10px 12px; gap: 8px; }
  .mobile-menu { display: contents; }
  .mobile-menu > summary { grid-column: 2; grid-row: 1; display: grid; place-items: center; width: 44px; min-height: 44px; color: var(--muted); cursor: pointer; list-style: none; }
  .mobile-menu > summary::-webkit-details-marker { display: none; }
  .mobile-menu > summary svg { width: 20px; height: 20px; }
  .mobile-menu[open] > summary { background: var(--selected); color: var(--ink); }
  .mobile-menu::details-content { display: contents; }
  .mobile-menu:not([open])::details-content { display: none; }
  .mobile-menu__links { grid-column: 1 / -1; display: flex; flex-direction: column; border-top: 1px solid var(--line); padding-block: 8px; }
  .mobile-menu__links a { display: flex; align-items: center; min-height: 44px; font-size: 14px; padding-inline: 8px; }
  .hero { padding-top: 48px; }
  .hero h1 { font-size: clamp(44px, 8.4vw, 64px); }
  .hero-copy > p { font-size: 17px; }
  .hero-routes { gap: 16px; }
  .hero-routes a { justify-content: center; max-width: 220px; }
  .hero-routes a + a { padding-left: 16px; }
  .hero-routes strong { width: 100%; }
  .principles { grid-template-columns: 1fr 1fr; }
  .principles span { padding: 16px 8px; }
  .intro-grid, .ai-grid, .detail-grid, .group-layout { grid-template-columns: 1fr; gap: 28px; }
  .intro-grid > p { max-width: 560px; }
  .benefits { gap: 24px; }
  .benefits h3 { font-size: 21px; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: 24px; max-width: 540px; }
  .tour-panel { grid-template-columns: 1fr; gap: 24px; }
  .tour-copy { max-width: 560px; padding: 0; }
  .tour-copy h3 { margin-bottom: 12px; }
  .tour-links { flex-direction: row; gap: 24px; margin-top: 12px; }
  .mobile-offline-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .mobile-offline-copy { grid-column: 1 / -1; }
  .mobile-offline-grid figure:last-child { margin-top: 32px; }
  .platform-options { gap: 16px; }
  .platform-options h3 { font-size: 27px; }
  .route-picture { padding-inline: 8px; }
  .route-services { gap: 4px; }
  .route-services::after { left: calc((100% - 8px) / 6); right: calc((100% - 8px) / 6); }
  .group-layout .practice-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .group-screen { max-width: 100%; }
  .closing { padding-block: 80px; }
}
@media (max-width: 540px) {
  html { scroll-padding-top: 88px; }
  .wrap { width: calc(100% - 36px); }
  .section { padding-block: 56px; }
  .hero-grid .eyebrow { font-size: 10px; letter-spacing: .035em; margin-bottom: 24px; }
  .hero h1 { font-size: clamp(38px, 10vw, 54px); letter-spacing: -.05em; }
  .hero-copy { margin-top: 24px; }
  .hero-copy > p { font-size: 16px; }
  .actions { gap: 10px; margin: 24px 0 16px; }
  .hero .button { padding: 14px 16px; gap: 12px; font-size: 12px; }
  .hero-routes { gap: 12px; }
  .hero-routes a { font-size: 11px; gap: 4px; flex: 1; }
  .hero-routes a + a { padding-left: 12px; }
  .hero-product { margin-top: 28px; padding: 0 8px 8px; }
  .product-label { font-size: 11px; padding: 12px 2px; }
  .product-label > span:last-child { display: none; }
  .hero-product > a { max-height: 250px; }
  .hero-product img { width: 620px; max-width: none; }
  .principles { margin-top: 16px; }
  .principles span { font-size: 11px; }
  .principles span:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  h2 { font-size: 34px; }
  .eyebrow { margin-bottom: 20px; }
  .benefits { grid-template-columns: 1fr; gap: 28px; margin-top: 32px; }
  .benefits h3 { margin-top: 14px; }
  .section-heading { margin-bottom: 32px; }
  .tour-tabs { grid-template-columns: 1fr 1fr; }
  .tour-tabs button { padding: 16px 8px; }
  .tour-tabs button span { font-size: 13px; }
  .tour-copy h3 { font-size: 25px; }
  .tour-links { gap: 16px; }
  .tour-panel { margin-top: 28px; }
  .practice-grid, .group-layout .practice-grid { grid-template-columns: 1fr; gap: 16px; }
  .feature-index .practice-grid { grid-template-columns: 1fr; gap: 0; }
  .feature-index .practice-grid h3 { font-size: 20px; }
  .feature-index .practice-grid p { font-size: 14px; }
  .feature-index .section-heading h2 { font-size: 30px; }
  .mobile-offline-grid { gap: 12px; }
  .mobile-offline-grid figure { padding: 8px; }
  .mobile-offline-grid figcaption { font-size: 11px; margin-top: 12px; }
  .platform-options article { padding: 24px; }
  .platform-options h3 { font-size: 28px; }
  .route-picture { padding: 20px 12px; }
  .faqs summary { font-size: 15px; }
  .footer__main { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 24px; padding-block: 32px; }
  .footer__identity { grid-column: 1 / -1; }
  .footer__open { align-self: start; }
  .lang-notice { justify-content: flex-start; padding-top: 10px; }
  .lang-notice p { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; }
}