:root {
  --bg: #f3f7fb;
  --surface: rgba(255, 255, 255, 0.84);
  --surface-strong: #ffffff;
  --line: rgba(16, 24, 40, 0.08);
  --text: #101828;
  --muted: #475467;
  --primary: #1d4ed8;
  --primary-soft: rgba(29, 78, 216, 0.1);
  --success-soft: rgba(22, 163, 74, 0.08);
  --shadow: 0 24px 70px rgba(15, 23, 42, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(59, 130, 246, 0.16), transparent 32%),
    radial-gradient(circle at top right, rgba(14, 165, 233, 0.12), transparent 22%),
    var(--bg);
}

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

p,
li {
  color: var(--muted);
  line-height: 1.68;
}

.page-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.hero {
  padding-top: 8px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 22px;
  margin-bottom: 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  backdrop-filter: blur(16px);
}

.brand {
  font-weight: 800;
  letter-spacing: -0.04em;
}

.topbar-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

.topbar-links a {
  color: var(--muted);
  font-size: 0.95rem;
}

.hero-card,
.purchase-card {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  gap: 24px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.82));
  box-shadow: var(--shadow);
}

.hero-card {
  min-height: 420px;
}

.hero-copy,
.hero-aside,
.status-card,
.content,
.section,
.section-head,
.step-card,
.guide-panel,
.panel-heading,
.app-list,
.faq-card,
.footer {
  display: flex;
  flex-direction: column;
}

.hero-copy {
  justify-content: center;
}

.eyebrow,
.section-kicker,
.status-label {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--primary);
  background: var(--primary-soft);
}

.section-kicker {
  margin-bottom: 10px;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.04em;
}

h1 {
  max-width: 12ch;
  margin-top: 16px;
  font-size: clamp(2.75rem, 6vw, 4.6rem);
  line-height: 0.95;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.02;
}

h3 {
  font-size: 1.2rem;
  line-height: 1.2;
}

.lead {
  max-width: 56ch;
  margin: 20px 0 0;
  font-size: 1.08rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: fit-content;
  min-height: 52px;
  padding: 0 20px;
  border-radius: 14px;
  font-weight: 700;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

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

.button-primary {
  color: #ffffff;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.28);
}

.button-secondary {
  color: var(--text);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
}

.button-disabled {
  width: 100%;
  color: #98a2b3;
  background: #f8fafc;
  border: 1px dashed rgba(152, 162, 179, 0.7);
  cursor: default;
  box-shadow: none;
  pointer-events: none;
}

.status-card {
  height: 100%;
  justify-content: center;
  padding: 24px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top, rgba(37, 99, 235, 0.16), transparent 52%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(247, 250, 255, 0.92));
  border: 1px solid rgba(37, 99, 235, 0.14);
}

.status-card h2 {
  margin-top: 16px;
  font-size: 1.8rem;
}

.status-card p {
  margin-top: 14px;
}

.content {
  gap: 22px;
  margin-top: 22px;
}

.section {
  gap: 22px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: var(--surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.section-head {
  gap: 10px;
  max-width: 780px;
}

.section-head p {
  margin: 0;
}

.step-grid,
.faq-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.step-card,
.faq-card,
.guide-panel {
  gap: 14px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-strong);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--primary);
  background: var(--primary-soft);
}

.text-link {
  font-weight: 700;
  color: var(--primary);
}

.guide-layout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.panel-heading {
  flex-direction: row;
  align-items: flex-start;
  gap: 14px;
}

.panel-heading p {
  margin: 6px 0 0;
}

.app-list {
  gap: 12px;
}

.app-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, #ffffff, #f8fbff);
}

.app-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.app-card span {
  color: var(--primary);
  font-weight: 600;
}

.app-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: flex-end;
}

.mini-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border-radius: 12px;
  border: 1px solid rgba(29, 78, 216, 0.15);
  color: var(--primary);
  font-weight: 700;
  background: rgba(29, 78, 216, 0.06);
}

.helper-text {
  margin: 0;
  font-size: 0.96rem;
}

.check-list {
  margin: 0;
  padding-left: 18px;
}

.check-list li + li {
  margin-top: 10px;
}

.purchase-card {
  align-items: center;
}

.section-faq {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(250, 252, 255, 0.92)),
    var(--success-soft);
}

.footer {
  align-items: center;
  padding: 20px 0 0;
}

.footer p {
  margin: 0;
  text-align: center;
}

@media (max-width: 1024px) {
  .hero-card,
  .purchase-card,
  .step-grid,
  .guide-layout,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .hero-card {
    min-height: auto;
  }
}

@media (max-width: 720px) {
  .page-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 12px;
  }

  .topbar {
    padding: 16px 18px;
    border-radius: 24px;
  }

  .topbar,
  .topbar-links,
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .hero-card,
  .section,
  .purchase-card {
    padding: 20px;
  }

  h1 {
    max-width: none;
  }

  .button,
  .button-primary,
  .button-secondary {
    width: 100%;
  }

  .app-card {
    align-items: stretch;
    flex-direction: column;
  }

  .app-actions {
    justify-content: stretch;
  }

  .mini-link {
    flex: 1 1 140px;
  }
}