:root {
  --primary: #47a98e;
  --primary-strong: #1c886a;
  --bg: #1b1b1b;
  --surface: #272727;
  --surface-soft: #313131;
  --text: #ffffff;
  --muted: #b7b7b7;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.24);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: var(--bg);
  color: var(--text);
  font-family: Manrope, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.shell { width: min(1120px, calc(100% - 32px)); margin: 0 auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(14px);
}
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; }
.brand img { width: 48px; height: 48px; object-fit: contain; }
.brand-mark { width: 32px; height: 32px; color: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 22px; }
.header-link { color: var(--muted); font-size: 14px; font-weight: 700; text-decoration: none; }
.header-link:hover { color: var(--primary); }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 22px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 12px 30px color-mix(in srgb, var(--primary) 25%, transparent);
  transition: transform .2s ease, box-shadow .2s ease;
}
.button:hover { transform: translateY(-2px); box-shadow: 0 16px 34px color-mix(in srgb, var(--primary) 34%, transparent); }
.hero {
  position: relative;
  overflow: hidden;
  padding: 86px 0 76px;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(90deg, var(--bg) 0%, color-mix(in srgb, var(--bg) 86%, transparent) 55%, color-mix(in srgb, var(--bg) 68%, transparent) 100%),
    url("_astro/bg.Czs0YZmI_PjGz5.webp") center / cover;
}
.hero::after {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  right: -120px;
  top: -150px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--primary) 24%, transparent);
  filter: blur(80px);
}
.hero-content { position: relative; z-index: 1; max-width: 790px; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 22px;
  padding: 9px 15px;
  border: 1px solid color-mix(in srgb, var(--primary) 62%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--primary) 12%, transparent);
  color: var(--primary);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}
h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 20px; font-size: clamp(38px, 6vw, 70px); line-height: 1.05; letter-spacing: -.04em; }
.hero p { max-width: 670px; margin-bottom: 28px; color: var(--muted); font-size: clamp(17px, 2vw, 21px); }
.hero-links { display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.back-link { color: var(--muted); font-size: 14px; font-weight: 700; text-underline-offset: 5px; }
.guide { padding: 64px 0 90px; }
.guide-grid { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 40px; align-items: start; }
.toc { position: sticky; top: 98px; padding: 22px; border: 1px solid var(--border); border-radius: 22px; background: var(--surface); }
.toc strong { display: block; margin-bottom: 12px; font-size: 14px; }
.toc a { display: block; padding: 7px 0; color: var(--muted); font-size: 14px; text-decoration: none; }
.toc a:hover { color: var(--primary); }
.steps { display: grid; gap: 24px; }
.step {
  scroll-margin-top: 100px;
  padding: clamp(22px, 4vw, 38px);
  border: 1px solid var(--border);
  border-radius: 28px;
  background: var(--surface);
  box-shadow: var(--shadow);
}
.step-heading { display: flex; align-items: flex-start; gap: 16px; }
.step-number {
  display: grid;
  flex: 0 0 44px;
  height: 44px;
  place-items: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #fff;
  font-size: 18px;
  font-weight: 800;
}
.step h2 { margin-bottom: 8px; font-size: clamp(22px, 3vw, 31px); line-height: 1.2; }
.step p { color: var(--muted); }
.step-content { margin: 22px 0 0 60px; }
.download-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.download-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 60px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--surface-soft);
  font-weight: 800;
  text-decoration: none;
}
.download-card span:last-child { color: var(--primary); font-size: 14px; }
.download-card:hover { border-color: var(--primary); }
.note { margin-top: 14px; padding: 15px 17px; border-left: 3px solid var(--primary); border-radius: 10px; background: color-mix(in srgb, var(--primary) 10%, transparent); color: var(--muted); font-size: 14px; }
.key-example { margin-top: 16px; padding: 15px 18px; overflow-wrap: anywhere; border: 1px dashed color-mix(in srgb, var(--primary) 55%, transparent); border-radius: 14px; background: var(--surface-soft); color: var(--primary); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; }
.screen-wrap { display: grid; grid-template-columns: minmax(0, 1fr) minmax(220px, 320px); gap: 28px; align-items: center; }
.screen { width: min(100%, 300px); margin: 0 auto; border-radius: 24px; box-shadow: 0 22px 48px rgba(0, 0, 0, .28); }
.checklist { margin: 0; padding-left: 20px; color: var(--muted); }
.checklist li + li { margin-top: 8px; }
.success { border-color: color-mix(in srgb, var(--primary) 58%, var(--border)); background: linear-gradient(135deg, color-mix(in srgb, var(--primary) 16%, var(--surface)), var(--surface)); }
.success h2 { color: var(--primary); }
.site-footer { padding: 34px 0; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.footer-inner { display: flex; justify-content: space-between; gap: 18px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.site-footer a { text-underline-offset: 4px; }

body.brand-light {
  --primary: #0d4cd3;
  --primary-strong: #1261dc;
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #f1f5fb;
  --text: #1f2937;
  --muted: #667085;
  --border: #dce5f2;
  --shadow: 0 20px 58px rgba(30, 64, 175, .08);
  background: radial-gradient(circle at 8% 8%, rgba(13, 76, 211, .06), transparent 28rem), #fff;
}
body.brand-light .site-header { background: rgba(255, 255, 255, .9); }
body.brand-light .hero { background: radial-gradient(circle at 82% 32%, rgba(13, 76, 211, .17), transparent 22rem), linear-gradient(135deg, #fff 0%, #f4f8ff 58%, #e9f2ff 100%); }
body.brand-light .hero::after { opacity: .45; }

@media (max-width: 820px) {
  .header-link { display: none; }
  .hero { padding: 64px 0 58px; }
  .guide { padding-top: 38px; }
  .guide-grid { grid-template-columns: 1fr; }
  .toc { display: none; }
  .screen-wrap { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .shell { width: min(100% - 24px, 1120px); }
  .header-inner { min-height: 64px; }
  .brand img { width: 42px; height: 42px; }
  .header-actions .button { min-height: 40px; padding: 0 14px; font-size: 13px; }
  .hero { padding: 48px 0 50px; }
  .download-grid { grid-template-columns: 1fr; }
  .step-heading { gap: 12px; }
  .step-number { flex-basis: 40px; height: 40px; }
  .step-content { margin-left: 0; }
  .footer-inner { flex-direction: column; }
}