/* Unfamiliar — article/guide pages. Light theme, same tokens as the landing page. */
:root {
  --acc: #e85d1f; --acc-b: #e85d1f; --acc-h: #b8500f; --acc-d: #8a3d0e; --acc-rgb: 232,93,31;
  --bg: #f7f9fc; --panel: #ffffff; --card: #ffffff;
  --border: #e6ebf2; --border-soft: rgba(11,53,88,0.08);
  --text: #0b3558; --mid: #476788; --dim: #7b8ea3; --faint: #a9b7c6;
  --green: #178a66; --blue: #4a7cb0; --shadow: rgba(11,53,88,0.20);
  --font: "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 var(--font); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
a { color: var(--acc-b); text-decoration: none; }
a:hover { color: var(--acc); }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

/* header — identical to the landing page */
header { display: flex; align-items: center; justify-content: space-between; padding: 22px 0; flex-wrap: wrap; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 15px; letter-spacing: 0.02em; color: var(--text); }
.brand .mark { width: 22px; height: 22px; border-radius: 6px; background: linear-gradient(135deg, var(--acc-b), var(--acc)); display: grid; place-items: center; }
.brand .mark svg { width: 15px; height: 15px; }
nav.top-nav { display: flex; align-items: center; gap: 22px; }
nav.top-nav a { color: var(--mid); font-size: 14px; font-weight: 500; }
nav.top-nav a:hover { color: var(--acc-b); }
.btn { display: inline-flex; align-items: center; gap: 8px; border-radius: 10px; padding: 11px 20px; font: 600 14px var(--font); cursor: pointer; border: 1px solid transparent; transition: all .15s ease; white-space: nowrap; }
.btn-primary { background: var(--acc); color: #fff !important; }
.btn-primary:hover { background: var(--acc-h); transform: translateY(-1px); color: #fff !important; }
.btn-ghost { background: transparent; color: var(--text) !important; border-color: var(--border); }
.btn-ghost:hover { border-color: var(--acc); color: var(--text) !important; }

/* article column */
.narrow { max-width: 720px; margin: 0 auto; padding: 28px 24px 48px; }
.crumbs { font-size: 13px; color: var(--dim); margin: 0 0 18px; }
.crumbs a { color: var(--dim); }
.crumbs a:hover { color: var(--acc-b); }
.narrow h1 { font-size: clamp(28px, 4vw, 38px); font-weight: 800; line-height: 1.15; letter-spacing: -0.02em; margin: 0 0 14px; }
.narrow h2 { font-size: 22px; font-weight: 700; letter-spacing: -0.01em; margin: 40px 0 10px; }
.narrow h3 { font-size: 17px; font-weight: 700; margin: 22px 0 6px; }
.narrow p, .narrow li { color: var(--mid); font-size: 16.5px; line-height: 1.7; }
.narrow p { margin: 0 0 14px; }
.narrow ul { padding-left: 22px; margin: 0 0 14px; }
.narrow li { margin-bottom: 8px; }
.narrow b, .narrow strong { color: var(--text); font-weight: 700; }
.dim { color: var(--dim); font-size: 14px; }
.notice { font-family: var(--mono); font-size: 14px; background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; color: var(--text); display: inline-block; margin: 6px 0 18px; box-shadow: 0 10px 30px -24px var(--shadow); }
.tpl { font-size: 15.5px; background: var(--panel); border: 1px solid var(--border); border-left: 3px solid var(--acc); border-radius: 10px; padding: 16px 20px; margin: 10px 0 18px; color: var(--text); white-space: pre-line; line-height: 1.6; box-shadow: 0 14px 40px -30px var(--shadow); }

/* numbered steps */
.steps { counter-reset: step; list-style: none; padding: 0; margin: 0 0 14px; }
.steps li { counter-increment: step; padding: 8px 0 8px 46px; position: relative; }
.steps li::before { content: counter(step); position: absolute; left: 0; top: 8px; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-size: 13px; font-weight: 700; color: var(--acc); background: rgba(var(--acc-rgb), .12); border: 1px solid rgba(var(--acc-rgb), .3); }

/* CTA box */
.cta { background: var(--panel); border: 1px solid rgba(var(--acc-rgb), .35); border-radius: 16px; padding: 24px 26px; margin: 40px 0 8px; box-shadow: 0 26px 60px -40px var(--shadow); }
.cta h3 { margin: 0 0 8px; font-size: 20px; letter-spacing: -0.01em; }
.cta p { margin: 0 0 16px; }
.cta .btn { margin: 0 10px 8px 0; }
.cta small { display: block; margin-top: 10px; color: var(--dim); font-size: 13px; }

/* FAQ — identical to the landing page */
.faq { margin-top: 12px; }
.faq details { background: var(--panel); border: 1px solid var(--border-soft); border-radius: 12px; padding: 18px 22px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 16px; list-style: none; display: flex; justify-content: space-between; gap: 12px; color: var(--text); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--acc-b); font-weight: 700; flex: 0 0 auto; }
.faq details[open] summary::after { content: "–"; }
.faq p { color: var(--mid); font-size: 15px; margin: 12px 0 0; }

.related { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--border); font-size: 14px; color: var(--dim); }

/* footer — identical to the landing page */
footer { border-top: 1px solid var(--border); padding: 34px 0 60px; margin-top: 40px; }
footer .frow-foot { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; color: var(--dim); font-size: 13.5px; }
footer a { color: var(--dim); }
footer a:hover { color: var(--acc-b); }

@media (max-width: 640px) {
  nav.top-nav { gap: 14px; }
  nav.top-nav .hide-sm { display: none; }
  .narrow { padding: 18px 20px 40px; }
}

/* inline product demo */
figure.demo { margin: 22px 0 18px; }
figure.demo img { display: block; width: 100%; height: auto; border: 1px solid var(--border); border-radius: 14px; box-shadow: 0 26px 60px -34px var(--shadow); }
figure.demo figcaption { margin-top: 10px; font-size: 13.5px; color: var(--dim); line-height: 1.5; }