:root {
  --bg: #0d1117;
  --bg-soft: #11161d;
  --panel: #161b22;
  --panel-2: #1b222b;
  --border: #262e38;
  --text: #e6edf3;
  --muted: #9aa7b4;
  --accent: #5ac85a;
  --accent-2: #7ee787;
  --accent-dim: rgba(90, 200, 90, 0.12);
  --radius: 14px;
  --maxw: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.wrap.narrow { max-width: 760px; }

.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(13, 17, 23, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); font-weight: 700; }
.brand:hover { text-decoration: none; }
.logo {
  width: 22px; height: 22px; border-radius: 6px;
  background: linear-gradient(135deg, var(--accent), #3fa34d);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08) inset;
}
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--muted); font-size: 14px; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 20px; border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--panel-2); color: var(--text);
  font-weight: 600; font-size: 15px; cursor: pointer;
  transition: transform 0.12s ease, background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); border-color: #38424f; }
.btn:active { transform: translateY(0); }
.btn-sm { padding: 7px 14px; font-size: 14px; }
.btn-primary {
  background: linear-gradient(135deg, var(--accent), #3fa34d);
  border-color: transparent; color: #06210a;
  box-shadow: 0 6px 20px rgba(90, 200, 90, 0.22);
}
.btn-primary:hover { box-shadow: 0 8px 26px rgba(90, 200, 90, 0.32); }
.btn-ghost { background: transparent; }

.hero {
  padding: 84px 0 68px;
  background:
    radial-gradient(900px 420px at 50% -120px, rgba(90, 200, 90, 0.16), transparent 70%),
    var(--bg-soft);
  border-bottom: 1px solid var(--border);
  text-align: center;
}
.eyebrow {
  display: inline-block; margin: 0 0 18px; padding: 5px 12px;
  font-size: 12.5px; font-weight: 600; letter-spacing: 0.4px;
  color: var(--accent-2); background: var(--accent-dim);
  border: 1px solid rgba(90, 200, 90, 0.25); border-radius: 999px;
}
.hero h1 {
  margin: 0 0 18px;
  font-size: clamp(30px, 6vw, 52px);
  line-height: 1.15; letter-spacing: -0.5px; font-weight: 800;
}
.grad {
  background: linear-gradient(120deg, var(--accent-2), var(--accent));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lede { max-width: 640px; margin: 0 auto 30px; color: var(--muted); font-size: 17px; }
.lede strong { color: var(--text); }
.cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-bottom: 40px; }

.meta { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px 40px; margin: 0; }
.meta div { text-align: center; }
.meta dt { font-size: 12px; color: var(--muted); letter-spacing: 0.3px; }
.meta dd { margin: 2px 0 0; font-size: 15px; font-weight: 600; }

.section { padding: 68px 0; }
.section.alt { background: var(--bg-soft); border-block: 1px solid var(--border); }
.section h2 { margin: 0 0 30px; font-size: 26px; font-weight: 700; letter-spacing: -0.2px; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.card {
  padding: 20px 22px; background: var(--panel);
  border: 1px solid var(--border); border-radius: var(--radius);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: #3a4553; transform: translateY(-2px); }
.card h3 { margin: 0 0 8px; font-size: 16.5px; font-weight: 700; }
.card p { margin: 0; color: var(--muted); font-size: 14.5px; }
.card b { color: var(--text); font-weight: 600; }

.steps { margin: 0; padding-left: 22px; }
.steps li { margin-bottom: 18px; color: var(--muted); }
.steps li b { color: var(--text); }
.steps li:last-child { margin-bottom: 0; }

code, kbd {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
}
code {
  padding: 2px 6px; background: #0b0f14;
  border: 1px solid var(--border); border-radius: 6px; color: var(--accent-2);
}
kbd {
  padding: 2px 7px; background: var(--panel-2);
  border: 1px solid #38424f; border-bottom-width: 2px;
  border-radius: 6px; color: var(--text);
}

.note-list { display: grid; gap: 12px; }
.note {
  padding: 16px 18px; background: var(--panel);
  border: 1px solid var(--border); border-left: 3px solid var(--accent);
  border-radius: 10px;
}
.note h4 { margin: 0 0 6px; font-size: 15px; font-weight: 700; }
.note p { margin: 0; color: var(--muted); font-size: 14.5px; }

.verify { margin-top: 26px; }
.verify h4 { margin: 0 0 8px; font-size: 14px; color: var(--muted); font-weight: 600; }
.verify code {
  display: block; padding: 12px 14px;
  font-size: 12px; word-break: break-all; line-height: 1.5;
}

.footer { padding: 28px 0; border-top: 1px solid var(--border); }
.footer-inner {
  display: flex; align-items: center; justify-content: center;
  gap: 10px; flex-wrap: wrap;
  color: var(--muted); font-size: 13.5px;
}
.dot { opacity: 0.5; }

@media (max-width: 640px) {
  .nav-links a:not(.btn) { display: none; }
  .hero { padding: 60px 0 52px; }
  .section { padding: 52px 0; }
  .meta { gap: 12px 26px; }
}