:root {
  --bg: #0a0a12;
  --bg-raise: #12121e;
  --ink: #f2f2f7;
  --ink-dim: #a8a8bd;
  --line: #24243a;
  --blue: #2e5bff;
  --purple: #9b3bff;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 24px;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(10, 10, 18, 0.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 24px;
  max-width: 960px;
  margin: 0 auto;
}

.nav img {
  width: 28px;
  height: 28px;
}

.nav .word {
  font-weight: 700;
  letter-spacing: 0.04em;
  font-size: 15px;
}

.hero {
  position: relative;
  padding: 96px 24px 88px;
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -220px;
  left: 50%;
  transform: translateX(-50%);
  width: 640px;
  height: 640px;
  background: radial-gradient(circle, rgba(46, 91, 255, 0.28), rgba(155, 59, 255, 0.16) 45%, transparent 70%);
  filter: blur(10px);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
}

.mark {
  width: 84px;
  height: 84px;
  margin: 0 auto 32px;
  display: block;
}

h1 {
  font-size: clamp(32px, 5.4vw, 52px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 20px;
  font-weight: 700;
  background: linear-gradient(120deg, #eef0ff 0%, #cfd6ff 40%, #b98cff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.sub {
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.6;
  color: var(--ink-dim);
  margin: 0 auto;
  max-width: 560px;
}

.badge {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 28px;
}

.cta {
  padding: 80px 24px;
  text-align: center;
  border-top: 1px solid var(--line);
}

.cta-inner {
  max-width: 640px;
  margin: 0 auto;
}

.cta h2 {
  font-size: clamp(24px, 4vw, 32px);
  margin: 0 0 16px;
  font-weight: 700;
}

.cta-sub {
  color: var(--ink-dim);
  font-size: clamp(15px, 2vw, 17px);
  line-height: 1.6;
  margin: 0 0 32px;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(120deg, var(--blue), var(--purple));
  border-radius: 999px;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.btn:hover {
  opacity: 0.85;
}

.share {
  margin-top: 40px;
}

.share-label {
  color: var(--ink-dim);
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 16px;
}

.share-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
}

.share-link {
  display: inline-block;
  padding: 8px 18px;
  font-size: 13px;
  color: var(--ink-dim);
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.share-link:hover {
  color: var(--ink);
  border-color: var(--ink);
}

section.flow {
  padding: 8px 24px 96px;
  border-top: 1px solid var(--line);
}

.flow-inner {
  max-width: 860px;
  margin: 0 auto;
  padding-top: 80px;
}

.flow h2 {
  text-align: center;
  font-size: clamp(22px, 3vw, 28px);
  letter-spacing: -0.01em;
  margin: 0 0 12px;
}

.flow p.lead {
  text-align: center;
  color: var(--ink-dim);
  max-width: 540px;
  margin: 0 auto 56px;
  line-height: 1.6;
}

.steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 56px;
}

.step {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--bg-raise);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 20px;
  font-size: 14px;
  color: var(--ink-dim);
}

.step b {
  color: var(--ink);
  font-weight: 600;
}

.arrow {
  color: var(--purple);
  font-size: 16px;
}

.sources {
  text-align: center;
  color: var(--ink-dim);
  font-size: 14px;
  line-height: 1.9;
}

.sources span {
  display: inline-block;
  margin: 0 4px;
}

.sources span::after {
  content: "";
  margin-left: 10px;
  color: var(--line);
}

.sources span:last-child::after {
  content: "";
}

footer {
  border-top: 1px solid var(--line);
  padding: 32px 24px 48px;
  text-align: center;
  color: var(--ink-dim);
  font-size: 13px;
}

footer a {
  color: var(--ink-dim);
  text-decoration: none;
}

footer a:hover {
  color: var(--ink);
  text-decoration: underline;
}

.legal {
  text-align: left;
  max-width: 720px;
  margin: 0 auto;
  color: var(--ink-dim);
  font-size: 15px;
  line-height: 1.7;
}

.legal h2 {
  color: var(--ink);
  font-size: 20px;
  margin-top: 32px;
  margin-bottom: 12px;
  font-weight: 600;
}

.legal p {
  margin: 0 0 16px;
}

.legal ul {
  margin: 0 0 16px;
  padding-left: 24px;
}

.legal li {
  margin-bottom: 6px;
}

@media (max-width: 560px) {
  .steps { flex-direction: column; align-items: stretch; }
  .arrow { display: none; }
  .hero { padding: 72px 20px 64px; }
  .flow-inner { padding-top: 56px; }
  .cta { padding: 56px 20px; }
}

@media (prefers-reduced-motion: reduce) {
  header { backdrop-filter: none; }
  .hero::before { filter: none; }
}