/* HERD landing — matches the app theme (dark #0C0B0E, bull red #FF4D2E). */
:root {
  --bg: #0c0b0e;
  --card: #17151c;
  --border: #2a2733;
  --text: #f5f2eb;
  --dim: #9b95a6;
  --accent: #ff4d2e;
  --accent-soft: #3a1710;
  --gain: #39d98a;
  --loss: #ff6b6b;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { overflow-wrap: break-word; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.wrap-narrow { max-width: 720px; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(12, 11, 14, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 24px; }
.brand { font-size: 20px; letter-spacing: 0.5px; }

/* Buttons */
.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  padding: 14px 28px;
  border-radius: 14px;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.btn:hover { transform: translateY(-1px); opacity: 0.92; }
.btn-small { padding: 9px 18px; font-size: 14px; border-radius: 10px; }
.btn-big { padding: 18px 40px; font-size: 18px; }
.btn-ghost { background: transparent; border: 1px solid var(--border); color: var(--dim); }

/* Hero */
.hero { padding: 96px 0 48px; text-align: center; }
.hero h1 {
  font-size: clamp(34px, 9.5vw, 84px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin: 20px 0;
}
.sub {
  color: var(--dim);
  font-size: clamp(16px, 2.4vw, 20px);
  max-width: 640px;
  margin: 0 auto 32px;
}
.cta-row { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }
.fine { color: var(--dim); font-size: 13px; margin-top: 18px; }

.chip {
  display: inline-flex; gap: 8px; align-items: baseline;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}
.chip[hidden] { display: none; }
.chip-symbol { color: var(--accent); font-weight: 700; }
.chip .up { color: var(--gain); }
.chip .down { color: var(--loss); }

/* Phone mock */
.mock { padding: 24px 0 48px; }
.phone {
  width: min(340px, 84vw);
  margin: 0 auto;
  background: linear-gradient(180deg, #201d27, #131118);
  border: 1px solid var(--border);
  border-radius: 44px;
  padding: 14px;
  box-shadow: 0 40px 120px rgba(255, 77, 46, 0.12), 0 20px 60px rgba(0, 0, 0, 0.6);
}
.phone-screen {
  background: var(--bg);
  border-radius: 32px;
  padding: 32px 20px;
  min-height: 420px;
}
.phone-dim { color: var(--dim); font-size: 13px; }
.phone-balance { font-size: 40px; font-weight: 800; letter-spacing: -1px; }
.phone-gain { color: var(--gain); font-weight: 600; font-size: 14px; }
.phone-card {
  display: flex; align-items: center; gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px;
  margin-top: 14px;
  font-size: 14px;
}
.phone-card small { color: var(--dim); }
.phone-card .phone-gain { margin-left: auto; }
.phone-emoji { font-size: 24px; }

/* Sections */
.section { padding: 88px 0; }
.section-alt { background: #100e14; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section h2 {
  font-size: clamp(25px, 4.6vw, 44px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 40px;
  text-align: center;
}

.grid { display: grid; gap: 18px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 820px) { .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 26px;
}
.card h3 { font-size: 18px; margin-bottom: 10px; }
.card p { color: var(--dim); font-size: 15px; }
.num {
  display: inline-grid; place-items: center;
  width: 34px; height: 34px;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  border-radius: 10px;
  margin-bottom: 14px;
}

/* FAQ */
details {
  border: 1px solid var(--border);
  border-radius: 14px;
  background: var(--card);
  padding: 18px 22px;
  margin-bottom: 12px;
}
summary { cursor: pointer; font-weight: 700; }
details p { color: var(--dim); margin-top: 12px; font-size: 15px; }

/* Bottom CTA */
.section-cta { text-align: center; padding-bottom: 120px; }
.section-cta h2 { margin-bottom: 8px; }
.section-cta .sub { margin-bottom: 28px; }

/* Footer */
footer { border-top: 1px solid var(--border); padding: 48px 0 64px; }
footer .fine { max-width: 760px; margin-top: 14px; }
footer a { color: var(--dim); }