:root {
  --bg: #101820;
  --panel: #15222c;
  --panel-soft: #1b2b38;
  --text: #eef6fb;
  --muted: #a9bdca;
  --line: rgba(238, 246, 251, 0.12);
  --accent: #eef6fb;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Arial, sans-serif;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

.container {
  width: min(100% - 32px, 960px);
  margin: 0 auto;
}

.hero {
  padding: 72px 0 56px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, var(--panel) 0%, var(--bg) 100%);
}

.hero__inner {
  text-align: center;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 13px;
}

h1, h2, h3 {
  line-height: 1.2;
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  font-size: clamp(36px, 7vw, 72px);
}

h2 {
  font-size: clamp(26px, 4vw, 38px);
}

h3 {
  margin-top: 38px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-size: 22px;
}

p, li {
  color: var(--muted);
}

.hero__text {
  max-width: 680px;
  margin: 0 auto 28px;
  font-size: 18px;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--accent);
  border-radius: 999px;
  color: var(--bg);
  background: var(--accent);
  text-decoration: none;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button--ghost {
  color: var(--accent);
  background: transparent;
}

.card {
  margin: 28px 0;
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--line);
  border-radius: 28px;
  background: var(--panel);
  box-shadow: 0 20px 80px rgba(0, 0, 0, 0.16);
}

.notice {
  background: var(--panel-soft);
}

.contract a,
.details a {
  color: var(--text);
}

ul {
  padding-left: 22px;
}

.details {
  padding: 20px;
  border-radius: 20px;
  background: var(--panel-soft);
}

.details p {
  margin: 8px 0;
}

.accept {
  display: grid;
  gap: 18px;
}

.checkbox {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: var(--text);
  cursor: pointer;
}

.checkbox input {
  width: 20px;
  height: 20px;
  margin-top: 4px;
  accent-color: var(--accent);
}

.button--wide {
  width: 100%;
}

.disabled {
  pointer-events: none;
  opacity: 0.45;
}

.footer {
  padding: 34px 0 48px;
  text-align: center;
  border-top: 1px solid var(--line);
}

.footer p {
  margin: 0;
  font-size: 14px;
}

@media (max-width: 640px) {
  .hero {
    padding: 48px 0 36px;
  }

  .hero__actions,
  .button {
    width: 100%;
  }

  .card {
    border-radius: 22px;
  }
}