:root {
  --bg: #0f1419; --panel: #171e26; --panel2: #1e2731; --border: #2b3642;
  --text: #d8e0e8; --muted: #8a99a8; --accent: #3fa7ff; --accent2: #1f6fb8; --ok: #3ecf8e;
  --mono: "Cascadia Code", Consolas, "Courier New", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.65 "Segoe UI", system-ui, -apple-system, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }
code, pre { font-family: var(--mono); font-size: 14px; }
code { background: var(--panel2); padding: 1px 6px; border-radius: 4px; }
pre { background: #0b0f14; border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; overflow: auto; color: #cfe8ff; line-height: 1.5; }
pre code { background: none; padding: 0; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 780px; }

header.top { border-bottom: 1px solid var(--border); background: var(--panel); }
header.top .wrap { display: flex; align-items: center; gap: 24px; min-height: 60px; flex-wrap: wrap; }
.brand { font-weight: 700; font-size: 18px; color: var(--text); display: flex; align-items: center; gap: 8px; }
.brand span { color: var(--accent); }
.brand:hover { text-decoration: none; }
header.top nav { display: flex; gap: 18px; flex: 1; flex-wrap: wrap; }
header.top nav a { color: var(--muted); font-size: 15px; }
header.top nav a:hover { color: var(--text); text-decoration: none; }

.btn { display: inline-block; padding: 11px 22px; border-radius: 8px; font-weight: 600; border: 1px solid var(--border); background: var(--panel2); color: var(--text); }
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--accent2); border-color: var(--accent2); color: #fff; }
.btn.primary:hover { background: var(--accent); }
.btn.small { padding: 7px 14px; font-size: 14px; }

.hero { padding: 72px 0 56px; text-align: center; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.15; margin: 0 0 18px; }
.hero h1 span { color: var(--accent); }
.hero p.lead { font-size: 19px; color: var(--muted); max-width: 720px; margin: 0 auto 30px; }
.hero .cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero .note { margin-top: 14px; font-size: 14px; color: var(--muted); }
.shot { margin: 48px auto 0; border: 1px solid var(--border); border-radius: 10px; box-shadow: 0 20px 60px rgba(0,0,0,.45); display: block; }

section { padding: 56px 0; border-top: 1px solid var(--border); }
section h2 { font-size: 30px; margin: 0 0 10px; text-align: center; }
section p.sub { color: var(--muted); text-align: center; max-width: 680px; margin: 0 auto 36px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); gap: 18px; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 10px; padding: 22px; }
.card h3 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.card .ico { font-size: 24px; margin-bottom: 8px; display: block; }
a.card { display: block; color: inherit; }
a.card:hover { border-color: var(--accent); text-decoration: none; }
a.card .more { color: var(--accent); font-size: 14px; margin-top: 10px; display: inline-block; }

ol.steps { counter-reset: s; list-style: none; padding: 0; max-width: 760px; margin: 0 auto; }
ol.steps li { counter-increment: s; position: relative; padding: 0 0 22px 56px; }
ol.steps li::before { content: counter(s); position: absolute; left: 0; top: 0; width: 38px; height: 38px; border-radius: 50%; background: var(--accent2); color: #fff; font-weight: 700; display: flex; align-items: center; justify-content: center; }
ol.steps li strong { display: block; font-size: 17px; }
ol.steps li span { color: var(--muted); }

.vendors { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.vendors span { background: var(--panel); border: 1px solid var(--border); border-radius: 20px; padding: 5px 14px; font-size: 14px; color: var(--muted); }

.faq details { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 14px 18px; margin-bottom: 10px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq details p { color: var(--muted); margin: 10px 0 0; }

article { padding: 40px 0 60px; }
article h1 { font-size: clamp(28px, 4.2vw, 40px); line-height: 1.2; margin: 8px 0 14px; }
article h2 { font-size: 24px; margin: 38px 0 10px; }
article h3 { font-size: 19px; margin: 26px 0 8px; }
article p.lead { font-size: 18px; color: var(--muted); }
article ul, article ol { padding-left: 24px; }
article li { margin-bottom: 6px; }
article table { border-collapse: collapse; width: 100%; margin: 14px 0; font-size: 15px; }
article th, article td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; vertical-align: top; }
article th { background: var(--panel); }
.crumbs { font-size: 14px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.meta { font-size: 14px; color: var(--muted); }
.callout { background: var(--panel); border-left: 3px solid var(--accent); border-radius: 6px; padding: 14px 18px; margin: 22px 0; }
.callout p { margin: 0; }
.toc { background: var(--panel); border: 1px solid var(--border); border-radius: 8px; padding: 14px 20px; margin: 22px 0; }
.toc strong { display: block; margin-bottom: 4px; }
.toc ol { margin: 0; }

footer { border-top: 1px solid var(--border); padding: 30px 0; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer nav { display: flex; gap: 18px; flex-wrap: wrap; }
footer a { color: var(--muted); }

@media (max-width: 640px) {
  header.top nav { order: 3; width: 100%; padding-bottom: 10px; }
  .hero { padding: 48px 0 36px; }
  section { padding: 42px 0; }
}