*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #111111;
  --surface: #1a1a1a;
  --text: #f0f0f0;
  --muted: #888888;
  --accent: #e84c30;
  --accent-hover: #ff5c3d;
  --max-width: 640px;
  --font: 'Inter', 'Helvetica Neue', Arial, sans-serif;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem 1.5rem;
}

.page {
  width: 100%;
  max-width: var(--max-width);
}

/* ── Landing ──────────────────────────── */
.landing-header {
  font-size: clamp(2.8rem, 8vw, 5rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}

.landing-sub {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--muted);
  margin-bottom: 2.5rem;
  max-width: 480px;
}

.btn-pay {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.875rem 2rem;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s;
}

.btn-pay:hover {
  background: var(--accent-hover);
}

.landing-note {
  margin-top: 1.25rem;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ── Article ──────────────────────────── */
.article-header {
  font-size: clamp(1.8rem, 5vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 2rem;
}

.article-body {
  font-size: 1.05rem;
  line-height: 1.75;
  color: #d0d0d0;
}

.article-body h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  margin: 2rem 0 0.75rem;
}

.article-body p {
  margin-bottom: 1rem;
}

.article-body ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.article-body ul li {
  margin-bottom: 0.5rem;
}

.article-placeholder {
  background: var(--surface);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--muted);
  font-size: 0.9rem;
}