:root {
  color-scheme: light;
  --bg: #f5f7fa;
  --surface: #ffffff;
  --surface-soft: #eef3f8;
  --ink: #172334;
  --muted: #5a697a;
  --line: #dce4ec;
  --accent: #0f6cbd;
  --accent-hover: #0b5a9e;
  --on-accent: #ffffff;
  --success: #18794e;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", "Microsoft YaHei", "Yu Gothic UI", "Malgun Gothic", sans-serif;
  line-height: 1.65;
}
a { color: var(--accent); }
.wrap { width: min(1040px, calc(100% - 40px)); margin: 0 auto; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px 0; }
.brand { font-size: 18px; font-weight: 700; text-decoration: none; color: var(--ink); }
.brand small { display: block; font-size: 11px; font-weight: 500; color: var(--muted); letter-spacing: .08em; }
.language { font-size: 13px; text-decoration: none; }
.hero { padding: 64px 0 40px; max-width: 760px; }
.eyebrow { color: var(--accent); font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 10px 0 16px; font-size: clamp(34px, 6vw, 54px); line-height: 1.15; letter-spacing: -.035em; }
.hero p { margin: 0; color: var(--muted); font-size: 18px; max-width: 680px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.button {
  display: inline-flex; align-items: center; justify-content: center; min-height: 44px;
  padding: 10px 20px; border: 1px solid var(--line); border-radius: 7px;
  background: var(--surface); color: var(--ink); font-weight: 650; font-size: 14px;
  text-decoration: none; cursor: pointer;
}
.button.primary { border-color: var(--accent); background: var(--accent); color: var(--on-accent); }
.button.primary:hover { background: var(--accent-hover); }
.button.disabled { opacity: .62; cursor: default; }
.micro { margin-top: 14px; color: var(--muted); font-size: 12px; }
.section { padding: 34px 0; }
.section h2 { margin: 0 0 8px; font-size: 25px; line-height: 1.3; }
.section-intro { margin: 0 0 22px; color: var(--muted); }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.feature, .card, .step, .faq {
  border: 1px solid var(--line); border-radius: 10px; background: var(--surface);
}
.feature { padding: 20px; }
.feature h3 { margin: 0 0 8px; font-size: 15px; }
.feature p { margin: 0; color: var(--muted); font-size: 13px; }
.pricing { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; align-items: stretch; }
.card { padding: 28px; }
.card.pro { border: 2px solid var(--accent); }
.card h3 { margin: 0; font-size: 18px; }
.price { margin: 12px 0 4px; font-size: 38px; font-weight: 750; line-height: 1.2; }
.price small { font-size: 14px; font-weight: 500; }
.regular { color: var(--muted); font-size: 14px; font-weight: 500; text-decoration: line-through; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 20px; background: var(--surface-soft); color: var(--accent); font-size: 11px; font-weight: 700; }
ul.clean { margin: 20px 0 24px; padding: 0; list-style: none; color: var(--muted); font-size: 14px; }
ul.clean li { position: relative; padding: 6px 0 6px 22px; }
ul.clean li::before { content: "✓"; position: absolute; left: 0; color: var(--success); font-weight: 700; }
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; counter-reset: step; }
.step { padding: 20px; color: var(--muted); font-size: 14px; }
.step strong { display: block; margin-bottom: 6px; color: var(--ink); }
.step strong::before { counter-increment: step; content: counter(step) ". "; color: var(--accent); }
.notice { padding: 18px 20px; border-left: 3px solid var(--accent); background: var(--surface-soft); color: var(--muted); font-size: 14px; }
.faq { padding: 18px 20px; margin-top: 12px; }
.faq h3 { margin: 0 0 6px; font-size: 14px; }
.faq p { margin: 0; color: var(--muted); font-size: 13px; }
footer { margin-top: 34px; padding: 26px 0 34px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
footer a { color: inherit; }
.language-home { padding: 14vh 0; text-align: center; }
.language-home .actions { justify-content: center; }
@media (max-width: 720px) {
  .hero { padding-top: 38px; }
  .features, .pricing, .steps { grid-template-columns: 1fr; }
  .card { padding: 22px; }
  .hero p { font-size: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}