/* Rockfrog website.
   Type: Newsreader for headings and the wordmark, Inter for everything else, IBM Plex Mono only for code and dates.
   Colours: the Rockfrog theme tokens of the Chattering app (chattering/design/tokens.css), light and dark.
   Patterns follow the reference sites measured in reference/landing-pages/patterns.json:
   plain headings (no italic or coloured words), no small-caps labels, no arrows after links, nothing tilted. */
@font-face{font-family:Newsreader;src:url('assets/fonts/newsreader-latin-opsz-normal.woff2') format('woff2');font-style:normal;font-weight:200 800;font-display:swap}
@font-face{font-family:Inter;src:url('assets/fonts/inter-rockfrog.woff2') format('woff2');font-style:normal;font-weight:100 900;font-display:swap}
@font-face{font-family:'Plex Mono';src:url('assets/fonts/ibm-plex-mono-latin-500-normal.woff2') format('woff2');font-weight:500;font-display:swap}

:root{color-scheme:light;
  --paper:#f3f5f1;--card:#fbfcfa;--soft:#eceee9;--ink:#101412;--muted:#4f5751;--faint:#737c75;
  --line:#dce2db;--line-strong:#b7beb6;--accent:#377a4c;--button-bg:#2f6c42;--button-fg:#fff;
  --serif:Newsreader,Georgia,'Times New Roman',serif;--sans:Inter,system-ui,-apple-system,'Segoe UI',sans-serif;--mono:'Plex Mono',ui-monospace,monospace}
@media(prefers-color-scheme:dark){:root{color-scheme:dark;
  --paper:#101412;--card:#1a1f1b;--soft:#1a1f1b;--ink:#e1e6e1;--muted:#c9d0ca;--faint:#adb4ae;
  --line:#2e3631;--line-strong:#4f5650;--accent:#99d1a4;--button-bg:#377a4c;--button-fg:#fff}}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.6 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
h1,h2,h3,p,ul,figure{margin:0}
/* Headings: one serif at every level. Big sizes lighter, small sizes heavier (optical compensation); serif never tightened except slightly at display size. */
h1,h2,h3{font-family:var(--serif);font-weight:400;letter-spacing:0;line-height:1.1;text-wrap:balance;font-variant-numeric:lining-nums}
/* The big headline is Inter semibold, set tight, like OpenAI, ChatGPT, Notion, Linear and Obsidian (chosen 2026-09-30). Everything else keeps Newsreader. */
h1{font-family:var(--sans);font-weight:600;letter-spacing:-.03em}
h2{font-size:40px}
h3{font-size:22px;font-weight:500;line-height:1.25}
.company .section h2{font-size:30px;font-weight:450}
p{text-wrap:pretty}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration-color:var(--line-strong);text-underline-offset:3px}
a:hover{text-decoration-color:currentColor}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.wrap{width:min(1200px,calc(100% - 96px));margin-inline:auto}
.skip{position:absolute;left:16px;top:-60px;padding:10px 14px;background:var(--card);border:1px solid var(--line);z-index:10}
.skip:focus{top:12px}
.small,.caption{max-width:62ch}
.small{font-size:15px;color:var(--faint)}

/* Header */
.header{display:flex;align-items:center;gap:32px;min-height:84px;border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;font-family:var(--serif);font-size:30px;font-weight:560;letter-spacing:-.01em;line-height:1;text-decoration:none}
.brand-period{color:var(--accent)}
.frog{width:38px;height:34px;margin-right:9px;background:currentColor;mask:url('assets/rockfrog.svg') center/contain no-repeat;-webkit-mask:url('assets/rockfrog.svg') center/contain no-repeat}
.brand-pair{display:flex;align-items:center;gap:14px}
.brand-product{font-family:var(--serif);font-size:24px;line-height:1;color:var(--muted);padding-left:14px;border-left:1px solid var(--line-strong)}
.header nav{display:flex;gap:28px;margin-left:auto;font-size:15px}
.header nav a{text-decoration:none;color:var(--muted)}
.header nav a:hover{color:var(--ink)}
.header-button{padding:8px 16px;border-radius:8px;background:var(--ink);color:var(--paper);font-size:15px;font-weight:500;text-decoration:none}

/* Buttons */
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 22px;border-radius:8px;background:var(--button-bg);color:var(--button-fg);font-size:16px;font-weight:500;text-decoration:none;border:1px solid var(--button-bg)}
.button:hover{filter:brightness(1.08)}
.button.secondary{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.button.secondary:hover{border-color:var(--ink);filter:none}

/* Sections */
.section{padding-block:88px;border-top:1px solid var(--line)}
.section h2{margin-bottom:32px}
.anywhere h2,.flagship h2{margin-bottom:16px}
.section-lead{color:var(--muted);max-width:60ch;margin:-16px 0 32px}

/* Company page */
.company-hero{display:grid;grid-template-columns:1.1fr 1fr;gap:64px;align-items:end;padding-block:96px 72px}
.company-hero h1{font-size:clamp(48px,5.9vw,77px);line-height:1.04}
.company-hero p{font-size:21px;line-height:1.5;color:var(--muted);max-width:34ch}
.flagship{display:grid;grid-template-columns:1fr 1.45fr;gap:48px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:52px 0 52px 52px;overflow:hidden;margin-bottom:88px}
.flagship h2{font-size:56px;margin-bottom:16px}
.flagship-copy>p:not(.small){font-size:19px;color:var(--muted);max-width:32ch;margin-bottom:14px}
.flagship-shot{display:block;border:1px solid var(--line);border-right:0;border-radius:10px 0 0 10px;overflow:hidden}
.flagship-shot img{width:100%;height:auto}
.latest-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.latest-card{display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:12px;overflow:hidden;text-decoration:none}
.latest-card:hover h3{text-decoration:underline;text-underline-offset:3px}
.latest-art{aspect-ratio:16/10;overflow:hidden;background:var(--soft);border-bottom:1px solid var(--line)}
.latest-art img{width:100%;height:100%;object-fit:cover;object-position:left top}
.latest-art.portrait img{object-position:center 38%}
.latest-copy{display:flex;flex-direction:column;flex:1;padding:22px 24px 20px}
.latest-copy h3{font-size:23px}
.latest-copy p{color:var(--muted);font-size:15px;margin:8px 0 20px}
.latest-copy dl{margin:auto 0 0;border-top:1px solid var(--line)}
.latest-copy dl div{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid var(--line);font-size:14px}
.latest-copy dt{font-family:var(--mono);font-weight:500;font-size:13px;color:var(--faint)}
.latest-copy dd{margin:0}
.work-list{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;column-gap:64px;border-top:1px solid var(--line)}
.work-list li{display:grid;grid-template-columns:150px 1fr;gap:20px;padding:16px 0;border-bottom:1px solid var(--line)}
.work-list a{font-weight:600}
.work-list p{color:var(--muted);font-size:15px}
.more{margin-top:24px;font-size:15px}
.about-body{display:grid;grid-template-columns:80px 1fr;gap:28px;max-width:760px}
.about-body img{width:80px;height:80px;border-radius:50%;object-fit:cover}
.about-body p{color:var(--muted);margin-bottom:12px}

/* Product page */
.product-hero{text-align:center;padding-block:88px 56px;display:flex;flex-direction:column;align-items:center}
.product-hero h1{font-size:clamp(56px,7.8vw,103px);line-height:1}
.product-lead{font-size:22px;line-height:1.5;color:var(--muted);max-width:34ch;margin-top:20px}
.product-hero .actions{justify-content:center}
.product-hero .small{margin-top:20px;max-width:56ch;margin-inline:auto}
.showcase{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:12px 12px 0;margin-bottom:88px}
.view-tabs{display:flex;gap:4px;padding:0 0 12px}
.view-tabs button{font:inherit;font-size:15px;padding:7px 14px;border-radius:8px;border:0;background:transparent;color:var(--muted);cursor:pointer}
.view-tabs button:hover{color:var(--ink);background:var(--soft)}
.view-tabs button[aria-pressed=true]{background:var(--soft);color:var(--ink);font-weight:500}
.showcase>a{display:block;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--soft)}
.showcase img{width:100%;height:auto;aspect-ratio:1.6;object-fit:contain}
.caption{font-size:15px;color:var(--muted);padding:14px 4px 16px}
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:40px;margin-bottom:32px}
.features>div{border-top:2px solid var(--ink);padding-top:18px}
.features p{color:var(--muted);font-size:16px;margin-top:8px}
.anywhere{display:grid;grid-template-columns:minmax(0,420px) 1fr;gap:72px;align-items:center}
.anywhere img{border-radius:12px;aspect-ratio:4/5;object-fit:cover;object-position:center 55%;width:100%}
.anywhere p{color:var(--muted);max-width:50ch;margin-bottom:14px}
.download{background:var(--soft)}
.download-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-bottom:24px}
.download-grid article{display:flex;flex-direction:column;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:26px}
.download-grid article.yours{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.download-grid h3{font-size:26px}
.download-grid p{font-size:15px;color:var(--muted);margin:6px 0 20px}
.download-grid .button{width:100%}
.download-grid .yours-note{font-size:14px;color:var(--accent);margin:2px 0 0}
.minor-link{font-size:14px;margin-top:14px}
.command{display:flex;gap:8px;align-items:flex-start;width:100%;background:var(--soft);border:1px solid var(--line);border-radius:8px;padding:10px 10px 10px 12px}
.command code{flex:1;font-family:var(--mono);font-weight:500;font-size:12.5px;line-height:1.55;overflow-wrap:anywhere}
.copy{font:inherit;font-size:14px;border:1px solid var(--line-strong);background:var(--card);color:var(--ink);border-radius:6px;padding:3px 10px;cursor:pointer}
.faq-list{max-width:820px;border-top:1px solid var(--line)}
.faq-list details{border-bottom:1px solid var(--line)}
.faq-list summary{cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:20px;padding:18px 0;font-size:18px;font-weight:500}
.faq-list summary::-webkit-details-marker{display:none}
.faq-list summary::after{content:'+';color:var(--faint);font-size:22px;line-height:1}
.faq-list details[open] summary::after{content:'−'}
.faq-list details p{color:var(--muted);max-width:62ch;padding-bottom:20px}

/* Footer */
.footer{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;padding-block:56px 32px;border-top:1px solid var(--line)}
.footer .brand{font-size:26px;align-self:start}
.footer .frog{width:32px;height:28px}
.footer nav{display:flex;flex-direction:column;gap:8px;font-size:15px}
.footer nav p{font-size:14px;color:var(--faint);margin-bottom:4px}
.footer nav a{text-decoration:none;color:var(--muted)}
.footer nav a:hover{color:var(--ink);text-decoration:underline}
.copyright{grid-column:1/-1;padding-top:24px;border-top:1px solid var(--line);font-size:14px;color:var(--faint)}

/* Privacy and other text pages */
.prose{max-width:720px;padding-block:72px 96px}
.prose h1{font-size:52px;margin-bottom:12px}
.prose h2{font-size:26px;margin:40px 0 10px}
.prose p{color:var(--muted);margin-bottom:12px}

/* 404 */
.not-found{padding-block:120px;max-width:560px}
.not-found h1{font-size:52px;margin-bottom:16px}
.not-found p{color:var(--muted)}

@media(max-width:1000px){
  .wrap{width:calc(100% - 64px)}
  .company-hero{grid-template-columns:1fr;gap:24px;padding-block:72px 56px}
  .flagship{grid-template-columns:1fr;padding:40px 0 0 40px;gap:32px}
  .flagship-copy{padding-right:40px}
  .latest-grid{gap:16px}
  .latest-copy{padding:18px}
  .work-list{grid-template-columns:1fr}
  .anywhere{gap:40px}
  .footer{grid-template-columns:1fr 1fr 1fr}
  .footer>.brand{grid-column:1/-1}
}
@media(max-width:900px){
  .header{flex-wrap:wrap;gap:12px 24px;padding-block:18px}
  .header nav{order:3;flex-basis:100%;margin:0;gap:24px}
  .header-button{margin-left:auto}
}
@media(max-width:700px){
  body{font-size:16px}
  .wrap{width:calc(100% - 40px)}
  h2{font-size:32px}
  .brand{font-size:26px}.frog{width:32px;height:28px}
  .brand-product{font-size:20px;padding-left:10px}.brand-pair{gap:10px}
  .company-hero{padding-block:48px 40px}
  .company-hero h1{font-size:44px}
  .company-hero p{font-size:18px}
  .flagship{padding:28px 0 0 24px;border-radius:12px;margin-bottom:56px}
  .flagship-copy{padding-right:24px}
  .flagship h2{font-size:44px}
  .flagship-copy>p:not(.small){font-size:17px}
  .section{padding-block:56px}
  .latest-grid,.features,.download-grid{grid-template-columns:1fr}
  .work-list li{grid-template-columns:1fr;gap:2px}
  .product-hero{padding-block:48px 36px}
  .product-hero h1{font-size:59px}
  .product-lead{font-size:18px}
  .showcase{padding:8px 8px 0;margin-bottom:56px}
  .view-tabs{overflow-x:auto}
  .view-tabs button{white-space:nowrap}
  .anywhere{grid-template-columns:1fr;gap:28px}
  .anywhere img{aspect-ratio:4/3}
  .footer{grid-template-columns:1fr 1fr}
  .faq-list summary{font-size:17px}
}
@media(max-width:480px){.brand-pair~.header-button{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
@media print{.header nav,.header-button,.actions,.view-tabs,.download,.footer nav{display:none}.wrap{width:100%}}