:root {
  --bg: #0c0c11;
  --bg-alt: #121219;
  --card: #16161f;
  --border: #25252f;
  --text: #e9e9ee;
  --muted: #9a9aa6;
  --accent: #ff4444;
  --accent-soft: rgba(255, 68, 68, 0.12);
  --radius: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }

/* ===== Nav ===== */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 7vw;
  background: rgba(12, 12, 17, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.25rem; }
.brand-logo { width: 26px; height: 26px; fill: var(--accent); }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--muted); font-weight: 500; transition: color .2s; }
.nav-links a:hover { color: var(--text); }

/* ===== Buttons ===== */
.btn {
  display: inline-block; padding: 12px 24px; border-radius: 999px;
  font-weight: 700; font-size: .98rem; transition: transform .15s, box-shadow .2s, background .2s; cursor: pointer;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 24px rgba(255, 68, 68, .35); }
.btn-primary:hover { box-shadow: 0 12px 30px rgba(255, 68, 68, .5); }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ===== Hero ===== */
.hero {
  position: relative; text-align: center; padding: 110px 7vw 120px; overflow: hidden;
}
.hero-glow {
  position: absolute; top: -180px; left: 50%; transform: translateX(-50%);
  width: 600px; height: 600px; background: radial-gradient(circle, var(--accent-soft) 0%, transparent 70%);
  pointer-events: none;
}
.hero-shield { width: 76px; height: 76px; fill: var(--accent); margin-bottom: 24px; filter: drop-shadow(0 6px 20px rgba(255,68,68,.45)); }
.hero h1 { font-size: clamp(2.1rem, 5.2vw, 3.6rem); font-weight: 800; line-height: 1.15; letter-spacing: -.02em; }
.hero h1 span { color: var(--accent); }
.lead { max-width: 640px; margin: 22px auto 0; color: var(--muted); font-size: clamp(1rem, 2vw, 1.2rem); }
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 38px; }

/* ===== Sections ===== */
.section { padding: 90px 7vw; }
.section-alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section h2, .cta h2 { font-size: clamp(1.7rem, 3.6vw, 2.4rem); text-align: center; font-weight: 800; letter-spacing: -.02em; }
.section-sub { text-align: center; color: var(--muted); margin-top: 10px; margin-bottom: 50px; }

/* ===== Feature grid ===== */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; max-width: 1100px; margin: 0 auto; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px;
  transition: transform .2s, border-color .2s;
}
.card:hover { transform: translateY(-4px); border-color: var(--accent); }
.card-ico { font-size: 2rem; margin-bottom: 12px; }
.card h3 { font-size: 1.15rem; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: .96rem; }

/* ===== Steps ===== */
.steps { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: 22px; }
.step { display: flex; gap: 20px; align-items: flex-start; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; }
.step-n {
  flex: none; width: 40px; height: 40px; border-radius: 50%; background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; font-weight: 800; font-size: 1.1rem;
}
.step h3 { margin-bottom: 4px; }
.step p { color: var(--muted); font-size: .96rem; }
.step code, .cmd code, .section-sub code { background: #0a0a0e; border: 1px solid var(--border); border-radius: 6px; padding: 2px 7px; color: var(--accent); font-size: .9em; }

/* ===== Commands ===== */
.cmd-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 14px; max-width: 1000px; margin: 0 auto; }
.cmd { display: flex; flex-direction: column; gap: 6px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; }
.cmd code { align-self: flex-start; }
.cmd span { color: var(--muted); font-size: .92rem; }

/* ===== CTA ===== */
.cta { text-align: center; padding: 100px 7vw; background: radial-gradient(circle at 50% 0%, var(--accent-soft) 0%, transparent 60%); }
.cta p { color: var(--muted); margin: 14px 0 32px; }

/* ===== Footer ===== */
.footer { padding: 44px 7vw; border-top: 1px solid var(--border); text-align: center; }
.footer-brand { display: inline-flex; align-items: center; gap: 8px; font-weight: 800; font-size: 1.1rem; }
.footer-links { display: flex; gap: 22px; justify-content: center; margin: 18px 0; flex-wrap: wrap; }
.footer-links a { color: var(--muted); transition: color .2s; }
.footer-links a:hover { color: var(--accent); }
.footer-copy { color: #5c5c66; font-size: .88rem; }

/* ===== Legal pages ===== */
.legal { max-width: 820px; margin: 0 auto; padding: 80px 7vw 60px; }
.legal a.back { color: var(--accent); font-weight: 600; }
.legal h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin: 28px 0 6px; }
.legal .updated { color: var(--muted); font-size: .9rem; margin-bottom: 30px; }
.legal h2 { font-size: 1.25rem; margin: 30px 0 10px; border-left: 3px solid var(--accent); padding-left: 12px; }
.legal h3 { font-size: 1.05rem; margin: 18px 0 6px; color: #cfcfd6; }
.legal p, .legal li { color: #c4c4cd; }
.legal ul { margin: 8px 0 8px 22px; }
.legal li { margin: 5px 0; }
.legal code { background: #0a0a0e; border: 1px solid var(--border); border-radius: 6px; padding: 2px 6px; color: var(--accent); font-size: .9em; }
.legal .note { background: var(--card); border: 1px solid var(--border); border-left: 3px solid var(--muted); border-radius: 10px; padding: 14px 16px; margin: 24px 0; color: var(--muted); font-size: .92rem; }
.legal a:not(.back) { color: var(--accent); }

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .nav-links { gap: 14px; }
  .nav-links a:not(.btn) { display: none; }
  .hero { padding: 70px 6vw 80px; }
  .section { padding: 64px 6vw; }
}