:root {
  --bg: #09090b;
  --panel: #121214;
  --border: #27272a;
  --text: #e4e4e7;
  --muted: #a1a1aa;
  --dim: #71717a;
  --accent: #ff2d2d;
  --accent-btn: #e10600;
  --accent-btn-hover: #ff2418;
  --font-h: "Space Grotesk", system-ui, sans-serif;
  --font: Inter, system-ui, sans-serif;
  --max: 72rem;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  min-height: 100vh;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { width: min(100% - 2.5rem, var(--max)); margin-inline: auto; }
.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 0.7rem; font-family: var(--font-h); font-weight: 600; letter-spacing: -0.03em; }
.brand img { width: 36px; height: 36px; }
nav { display: flex; gap: 1rem; align-items: center; font-size: 0.92rem; color: var(--muted); }
nav a:hover { color: var(--text); }
.hero {
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  gap: 2rem;
  align-items: center;
  padding: 4rem 0 2rem;
}
.hero-mark { width: min(220px, 70%); margin-inline: auto; }
.kicker { letter-spacing: 0.14em; font-size: 0.75rem; color: var(--accent); font-weight: 600; margin-bottom: 0.8rem; }
h1 { font-family: var(--font-h); font-size: clamp(2.5rem, 6vw, 4rem); letter-spacing: -0.04em; line-height: 1.02; }
.tag { font-family: var(--font-h); font-size: clamp(1.2rem, 2vw, 1.5rem); color: var(--muted); margin: 0.9rem 0 1rem; }
.lead { color: var(--muted); max-width: 40rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.7rem; margin-top: 1.6rem; align-items: center; }
.btn {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.55rem 1.05rem;
  font-size: 0.92rem;
  font-weight: 500;
}
.btn-accent { background: var(--accent-btn); border-color: var(--accent-btn); color: #fff; }
.btn-accent:hover { background: var(--accent-btn-hover); }
.btn-disabled { color: var(--dim); cursor: default; }
.file-note { color: var(--dim); font-size: 0.82rem; width: 100%; }
.need {
  background: rgba(225, 6, 0, 0.1);
  border: 1px solid rgba(255, 45, 45, 0.35);
  border-radius: 1rem;
  padding: 1rem 1.15rem;
  margin: 0.5rem 0 2rem;
}
.need strong { font-family: var(--font-h); display: block; margin-bottom: 0.25rem; }
.need p { color: var(--muted); }
.need a { color: #fff; text-decoration: underline; text-underline-offset: 0.15em; }
h2 { font-family: var(--font-h); font-size: 1.55rem; letter-spacing: -0.03em; margin-bottom: 0.9rem; }
.steps { list-style: none; display: grid; gap: 0.75rem; margin-bottom: 2.5rem; }
.steps li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.85rem;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 1rem;
  padding: 0.95rem 1.1rem;
}
.steps span {
  font-family: var(--font-h);
  color: var(--accent);
  font-weight: 600;
}
.steps p { color: var(--muted); }
.grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  margin-bottom: 2.5rem;
}
.grid article {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 1.1rem;
  padding: 1.15rem 1.2rem;
}
.grid h3 { font-family: var(--font-h); font-size: 1.05rem; margin-bottom: 0.35rem; }
.grid p, .note p { color: var(--muted); font-size: 0.95rem; }
.note {
  border-top: 1px solid var(--border);
  padding: 1.4rem 0;
}
.note + .note { padding-top: 0; border-top: 0; }
.note h2 { font-size: 1.2rem; }
footer {
  margin-top: 1rem;
  padding: 1.4rem 0 2.2rem;
  color: var(--dim);
  font-size: 0.82rem;
  border-top: 1px solid var(--border);
}
footer a { color: var(--muted); }
@media (max-width: 800px) {
  .hero { grid-template-columns: 1fr; padding-top: 2.4rem; }
  .hero-mark { order: -1; width: 120px; margin: 0; }
}