:root {
  --bg: #0f1419;
  --surface: #1a222c;
  --text: #e8eaed;
  --muted: #9aa0a6;
  --accent: #f4a261;
  --accent-dim: #e76f51;
  --radius: 14px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  min-height: 100vh;
}

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

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.hero {
  padding: 3.5rem 0 2.5rem;
  text-align: center;
  background: radial-gradient(ellipse 80% 60% at 50% -20%, rgba(244, 162, 97, 0.18), transparent);
}

.badge {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--accent);
  border: 1px solid rgba(244, 162, 97, 0.35);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(1.75rem, 5vw, 2.35rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.lead {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 36rem;
  margin: 0 auto 1.75rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.35rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: #1a0f0a;
  box-shadow: 0 4px 20px rgba(244, 162, 97, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 6px 28px rgba(244, 162, 97, 0.35);
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-ghost:hover {
  border-color: rgba(255, 255, 255, 0.28);
}

section {
  padding: 2.25rem 0;
}

section h2 {
  font-size: 1.25rem;
  margin: 0 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 560px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--muted);
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  margin: 0;
}

.steps li {
  position: relative;
  padding-left: 2.5rem;
  margin-bottom: 1rem;
}

.steps li::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background: rgba(244, 162, 97, 0.2);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.privacy {
  font-size: 0.88rem;
  color: var(--muted);
}

footer {
  padding: 2rem 0 3rem;
  text-align: center;
  font-size: 0.82rem;
  color: var(--muted);
}

footer .brand {
  color: var(--text);
  font-weight: 600;
}