/* Marsam 3D — the written guides. Same tokens as the landing page
   (landing/index.html); this file carries the article layout on top of them. */
:root {
  --bg: #0a0f1a;
  --bg-2: #0f172a;
  --bg-card: #111a2b;
  --border: rgba(148,163,184,0.12);
  --border-2: rgba(148,163,184,0.18);
  --text: #e2e8f0;
  --text-2: #cbd5e1;
  --text-3: #94a3b8;
  --text-4: #64748b;
  --accent: #10b981;
  --accent-2: #34d399;
  --accent-ink: #04221a;
  --radius: 16px;
  --radius-sm: 11px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial,
          "Apple Color Emoji", "Segoe UI Emoji", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
/* Same deep base + emerald glow + dot mesh as the landing page. */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(900px 520px at 82% -6%, rgba(16,185,129,0.16), transparent 60%),
    radial-gradient(760px 560px at 6% 4%, rgba(16,185,129,0.05), transparent 55%),
    linear-gradient(180deg, #0b1120 0%, var(--bg) 38%);
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  opacity: 0.45;
  background-image: radial-gradient(rgba(148,163,184,0.10) 1px, transparent 1px);
  background-size: 26px 26px;
  -webkit-mask-image: radial-gradient(1100px 700px at 78% -2%, #000 0%, transparent 70%);
          mask-image: radial-gradient(1100px 700px at 78% -2%, #000 0%, transparent 70%);
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── nav ─────────────────────────────────────────────────────────────────── */
header {
  position: sticky; top: 0; z-index: 50;
  border-bottom: 1px solid var(--border);
  background: rgba(10,15,26,0.72);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
}
.nav {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  height: 58px; max-width: 1140px; margin: 0 auto; padding: 0 24px;
}
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand .logo {
  width: 26px; height: 26px; border-radius: 8px; flex: none;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  display: grid; place-items: center; box-shadow: 0 4px 14px rgba(16,185,129,0.38);
}
.brand .logo svg { width: 15px; height: 15px; display: block; }
.nav-right { display: flex; align-items: center; gap: 16px; }
.nav-link { color: var(--text-3); font-size: 0.9rem; font-weight: 500; }
.nav-link:hover { color: var(--text-2); text-decoration: none; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; font-weight: 700;
  border-radius: 10px; padding: 9px 17px; font-size: 0.9rem; white-space: nowrap;
  color: var(--accent-ink); background: linear-gradient(135deg, var(--accent-2), var(--accent));
  box-shadow: 0 8px 24px rgba(16,185,129,0.28);
  transition: transform .12s ease, box-shadow .14s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-2px); box-shadow: 0 14px 32px rgba(16,185,129,0.40); }
.btn-lg { font-size: 1rem; padding: 13px 26px; }

/* ── page frame ──────────────────────────────────────────────────────────── */
.wrap { position: relative; z-index: 1; max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.prose { max-width: 760px; margin: 0 auto; }
main { padding: 0 0 96px; }

/* ── article hero ────────────────────────────────────────────────────────── */
.hero { padding: 62px 0 34px; }
.hero .wrap > * { max-width: 900px; margin-left: auto; margin-right: auto; }
.hero .facts { max-width: 1060px; }
.crumbs { font-size: 0.82rem; color: var(--text-4); margin: 0 0 20px; }
.crumbs a { color: var(--text-3); }
.eyebrow {
  display: inline-block; color: var(--accent-2); font-size: 0.7rem; font-weight: 800;
  letter-spacing: 0.13em; text-transform: uppercase;
  background: rgba(16,185,129,0.10); border: 1px solid rgba(16,185,129,0.28);
  border-radius: 999px; padding: 4px 12px; margin: 0 0 18px;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.05rem); line-height: 1.1; letter-spacing: -0.025em;
  margin: 0 0 20px; max-width: 900px;
}
.lede { font-size: clamp(1.06rem, 1.6vw, 1.22rem); color: var(--text-2); max-width: 780px; margin: 0; }
.hero-actions { display: flex; align-items: center; gap: 18px; margin-top: 30px; flex-wrap: wrap; }
.hero-note { color: var(--text-4); font-size: 0.88rem; }

/* ── figures ─────────────────────────────────────────────────────────────── */
figure { margin: 40px auto; max-width: 1000px; }
.shot {
  border-radius: var(--radius); border: 1px solid var(--border-2); overflow: hidden;
  background: var(--bg-2); box-shadow: 0 30px 70px rgba(0,0,0,0.45);
}
.shot img { width: 100%; height: auto; display: block; }
.shot.plain { box-shadow: none; }
figcaption { color: var(--text-3); font-size: 0.9rem; margin-top: 12px; max-width: 760px; }
.figpair { display: grid; grid-template-columns: 1fr 1fr; gap: 22px; align-items: start;
  max-width: 1060px; margin: 40px auto; }
.figpair figure { margin: 0; }
.figpair figcaption { font-size: 0.86rem; }
.inline-shot { max-width: 420px; }
.inline-shot .shot { box-shadow: 0 18px 40px rgba(0,0,0,0.40); }

/* ── body copy ───────────────────────────────────────────────────────────── */
h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.75rem); letter-spacing: -0.015em;
  margin: 56px auto 14px; max-width: 760px;
}
h3 { font-size: 1.08rem; margin: 30px 0 8px; }
p, li { color: var(--text-2); }
p { margin: 0 0 16px; max-width: 760px; }
ul, ol { padding-left: 22px; max-width: 760px; margin-left: auto; margin-right: auto; }
li { margin: 8px 0; }
strong { color: var(--text); }
code {
  background: rgba(148,163,184,0.13); border: 1px solid var(--border);
  border-radius: 6px; padding: 1px 7px; font-size: 0.88em; color: var(--text);
}

/* Numbered walk-through */
.steps { list-style: none; counter-reset: step; padding: 0; margin: 26px auto; max-width: 760px; }
.steps li {
  counter-increment: step; position: relative; padding: 0 0 22px 56px; margin: 0;
  border-left: 2px solid var(--border-2); padding-left: 34px; margin-left: 18px;
}
.steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps li::before {
  content: counter(step); position: absolute; left: -18px; top: -2px;
  width: 34px; height: 34px; border-radius: 50%;
  background: rgba(16,185,129,0.13); border: 1px solid rgba(16,185,129,0.34);
  color: var(--accent-2); font-weight: 800; font-size: 0.9rem;
  display: grid; place-items: center;
}
.steps li strong { display: block; color: var(--text); margin-bottom: 2px; }

.callout {
  background: var(--bg-card); border: 1px solid var(--border-2);
  border-left: 3px solid var(--accent); border-radius: var(--radius);
  padding: 20px 24px; margin: 30px auto; max-width: 760px;
}
.callout p { margin: 0; }
.callout p + p { margin-top: 10px; }
.quote {
  background: rgba(16,185,129,0.06); border: 1px solid rgba(16,185,129,0.22);
  border-radius: var(--radius); padding: 22px 26px; margin: 30px auto; max-width: 760px;
  color: var(--text); font-size: 1.06rem;
}

/* Fact strip under the hero */
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin: 40px 0 4px; }
.fact {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 15px 17px;
}
.fact b { display: block; color: var(--text); font-size: 0.95rem; }
.fact span { color: var(--text-4); font-size: 0.83rem; }

/* Comparison / capability table */
.tbl { width: 100%; border-collapse: collapse; margin: 26px 0; font-size: 0.95rem; }
.tbl th, .tbl td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border); vertical-align: top; }
.tbl th { color: var(--text-4); font-weight: 700; font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; }
.tbl td { color: var(--text-2); }
.tbl td:first-child { color: var(--text); font-weight: 600; white-space: nowrap; }
.yes { color: var(--accent-2); font-weight: 700; }
.no { color: var(--text-4); }
.tblwrap { overflow-x: auto; max-width: 860px; margin: 0 auto; }

/* FAQ */
.faq { max-width: 760px; margin: 10px auto 0; }
.faq details {
  background: var(--bg-card); border: 1px solid var(--border-2);
  border-radius: var(--radius-sm); padding: 4px 20px; margin: 10px 0;
}
.faq summary {
  cursor: pointer; font-weight: 700; color: var(--text); padding: 13px 0; list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--accent-2); font-weight: 800; }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin: 0 0 14px; color: var(--text-2); }

/* Closing CTA + more-guides */
.cta {
  margin: 62px auto 0; max-width: 1000px; padding: 38px 34px; text-align: center;
  background: linear-gradient(180deg, rgba(16,185,129,0.09), rgba(16,185,129,0.02));
  border: 1px solid rgba(16,185,129,0.26); border-radius: var(--radius);
}
.cta h2 { margin: 0 0 10px; max-width: none; }
.cta p { margin: 0 auto 22px; color: var(--text-2); max-width: 520px; }
.more { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin: 18px auto 0; max-width: 1000px; }
.more a {
  display: block; background: var(--bg-card); border: 1px solid var(--border-2);
  border-radius: var(--radius-sm); padding: 17px 19px; color: var(--text); font-weight: 650;
}
.more a:hover { text-decoration: none; border-color: rgba(16,185,129,0.45); background: rgba(16,185,129,0.06); }
.more span { display: block; color: var(--text-4); font-weight: 400; font-size: 0.88rem; margin-top: 4px; }

footer { border-top: 1px solid var(--border); padding: 28px 0; color: var(--text-4); font-size: 0.86rem; }
footer .wrap { display: flex; gap: 18px; flex-wrap: wrap; justify-content: space-between; }

@media (max-width: 860px) {
  .facts { grid-template-columns: repeat(2, 1fr); }
  .figpair, .more { grid-template-columns: 1fr; }
  .hero { padding: 40px 0 24px; }
  .nav-link { display: none; }
}