:root {
  --bg: #17191a;
  --bg-2: #1f2223;
  --card: #25292a;
  --line: #34393a;
  --text: #e9ece4;
  --muted: #a7ada3;
  --accent: #8cb85a;
  --accent-2: #b9d97f;
  --accent-ink: #13200a;
  --board-light: #eaedd0;
  --board-dark: #739552;
  --radius: 10px;
  --max: 1120px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: "Cascadia Mono", Consolas, "SF Mono", Menlo, monospace;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 var(--font);
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-2); }
a:hover { color: #d6ecaa; }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -.01em; }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
code, .mono { font-family: var(--mono); font-size: .92em; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* header */
.site-header { border-bottom: 1px solid var(--line); background: var(--bg-2); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 64px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 700; font-size: 1.15rem; }
.brand img { width: 32px; height: 32px; }
.nav { display: flex; gap: 20px; flex-wrap: wrap; }
.nav a { color: var(--muted); text-decoration: none; font-size: .95rem; }
.nav a:hover { color: var(--text); }

/* hero */
.hero { padding: 64px 0 40px; background:
  linear-gradient(180deg, rgba(140,184,90,.10), transparent 60%); }
.hero .wrap { display: grid; grid-template-columns: 1fr 1.25fr; gap: 40px; align-items: center; }
.eyebrow { color: var(--accent); font-weight: 600; letter-spacing: .08em; text-transform: uppercase; font-size: .8rem; margin-bottom: .8em; }
.lead { font-size: 1.15rem; color: var(--muted); }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; align-items: center; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 8px; font-weight: 600; text-decoration: none; border: 1px solid transparent; }
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { background: var(--accent-2); color: var(--accent-ink); }
.btn-ghost { border-color: var(--line); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--text); }
.badge { display: inline-block; padding: 6px 12px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); color: var(--muted); font-size: .9rem; }
.shot { border-radius: var(--radius); border: 1px solid var(--line); box-shadow: 0 20px 60px rgba(0,0,0,.45); }

/* sections */
section { padding: 56px 0; }
section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section-intro { color: var(--muted); max-width: 720px; margin-bottom: 32px; }

.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.card h3 { color: var(--accent-2); }
.card ul { margin: 0; padding-left: 1.1em; color: var(--muted); }
.card li { margin: .25em 0; }
.card p { color: var(--muted); }

.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery figure { margin: 0; }
.gallery figcaption { color: var(--muted); font-size: .9rem; margin-top: 8px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 0; padding: 0; list-style: none; }
.chips li { background: var(--bg); border: 1px solid var(--line); border-radius: 999px; padding: 4px 12px; font-size: .9rem; color: var(--text); }

table.spec { width: 100%; border-collapse: collapse; }
table.spec th, table.spec td { text-align: left; padding: 12px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
table.spec th { width: 34%; color: var(--muted); font-weight: 600; }

.notice { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 18px 20px; }
.hash { display: flex; gap: 8px; align-items: stretch; flex-wrap: wrap; margin: 8px 0 16px; }
.hash code { flex: 1 1 380px; background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; word-break: break-all; }
.hash button { background: var(--card); color: var(--text); border: 1px solid var(--line); border-radius: 6px; padding: 0 14px; font: inherit; cursor: pointer; min-height: 44px; }
.hash button:hover { border-color: var(--accent); }
pre { background: var(--bg); border: 1px solid var(--line); border-radius: 6px; padding: 12px; overflow-x: auto; font-family: var(--mono); font-size: .9rem; }

/* legal pages */
.doc { max-width: 820px; padding: 48px 16px; margin: 0 auto; }
.doc pre { white-space: pre-wrap; word-wrap: break-word; }

/* footer */
.site-footer { border-top: 1px solid var(--line); padding: 32px 0; color: var(--muted); font-size: .9rem; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.site-footer a { color: var(--muted); }
.site-footer nav { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .grid-3, .gallery { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .hero { padding-top: 40px; }
  .grid-3, .grid-2, .gallery { grid-template-columns: 1fr; }
  table.spec th { width: 40%; }
}

/* getting-started guide */
.guide .guide-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; align-items: start; }
.guide .step { position: relative; padding-top: 26px; }
.guide .step-no { position: absolute; top: -14px; left: 18px; width: 30px; height: 30px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-weight: 700; display: flex; align-items: center; justify-content: center; }
.guide .step ul ul { margin-top: .3em; }
.guide .shot-card { margin: 0; padding: 12px; }
.guide .shot-card figcaption { color: var(--muted); font-size: .9rem; margin-top: 8px; }
.guide .table-scroll { overflow-x: auto; }
.guide .level-table th { width: auto; }
.guide .level-table td:first-child { white-space: nowrap; font-weight: 600; }
.fine { color: var(--muted); font-size: .92rem; margin-top: 12px; }
.doc .guide .wrap { padding: 0; }
.doc .guide { padding: 24px 0 0; }
.doc .guide .guide-grid { grid-template-columns: 1fr; }
@media (max-width: 860px) { .guide .guide-grid { grid-template-columns: 1fr; } }