/* The platform's front page (rendered by the core: site/platform.ts). */
:root {
  --ink: #14213d;
  --text: #1f2a37;
  --muted: #5b6676;
  --line: #dde3ea;
  --surface: #f5f7fa;
  --accent: #b08d57;
  --brand: #1d3557;
  --radius: 10px;
  color-scheme: light;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
  color: var(--text);
  background: #fff;
  line-height: 1.7;
  word-break: keep-all;
}
a { color: var(--brand); }
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px max(16px, calc((100vw - 1120px) / 2));
  background: rgba(255, 255, 255, 0.94); border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(180%) blur(8px);
}
.brand { font-weight: 800; color: var(--ink); text-decoration: none; letter-spacing: -0.02em; font-size: 1.05rem; }
.brand::before { content: ''; display: inline-block; width: 12px; height: 12px; margin-right: 8px; border-radius: 3px; background: linear-gradient(135deg, var(--brand), var(--accent)); vertical-align: 0; }
.top nav { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; justify-content: flex-end; }
.top nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
.top nav a:hover { color: var(--ink); }
main { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
section { padding: 56px 0; border-bottom: 1px solid var(--line); }
section:last-child { border-bottom: 0; }
h1, h2, h3 { color: var(--ink); letter-spacing: -0.02em; line-height: 1.35; }
h1 { font-size: clamp(1.9rem, 4.6vw, 3rem); margin: 0.2em 0 0.5em; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0 0 0.8em; }
h3 { font-size: 1.08rem; margin: 0 0 0.4em; }
.hero { padding: 72px 0 64px; }
.eyebrow { color: var(--accent); font-weight: 700; margin: 0; }
.lead { font-size: 1.1rem; color: var(--muted); max-width: 760px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.button {
  display: inline-block; padding: 12px 22px; border-radius: var(--radius);
  background: var(--brand); color: #fff !important; text-decoration: none; font-weight: 700;
  border: 1px solid var(--brand);
}
.button.ghost { background: transparent; color: var(--brand) !important; }
.top .button { padding: 6px 14px; font-size: 0.9rem; }
.answer p { max-width: 820px; font-size: 1.05rem; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.grid article { padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.grid article p { margin: 0; color: var(--muted); }
.steps { list-style: none; counter-reset: step; padding: 0; margin: 0; display: grid; gap: 12px; }
.steps li { counter-increment: step; display: grid; grid-template-columns: 44px 1fr; gap: 4px 12px; align-items: start; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius); }
.steps li::before { content: counter(step); grid-row: span 2; width: 36px; height: 36px; border-radius: 50%; background: var(--ink); color: #fff; display: grid; place-items: center; font-weight: 700; }
.steps li span { color: var(--muted); }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.checks li { padding: 14px 16px 14px 44px; border-radius: var(--radius); background: var(--surface); position: relative; color: var(--muted); }
.checks li::before { content: '✓'; position: absolute; left: 16px; top: 13px; color: var(--accent); font-weight: 800; }
.checks strong { color: var(--ink); margin-right: 6px; }
.note { color: var(--muted); }
.plans { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; }
.plan { border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; }
.plan .price { font-size: 1.7rem; font-weight: 800; color: var(--ink); margin: 0; }
.plan .price span { font-size: 0.95rem; color: var(--muted); font-weight: 500; }
.plan .setup { color: var(--muted); margin: 0 0 12px; font-size: 0.92rem; }
.plan ul { padding-left: 1.1em; margin: 0; color: var(--text); }
details { border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 18px; margin-bottom: 10px; }
summary { cursor: pointer; font-weight: 700; color: var(--ink); }
details p { color: var(--muted); margin: 10px 0 0; }
.foot { max-width: 1120px; margin: 0 auto; padding: 32px 16px 48px; color: var(--muted); font-size: 0.9rem; }
@media (max-width: 640px) {
  .top nav a:not(.button) { display: none; }
  section { padding: 40px 0; }
  .hero { padding: 48px 0 40px; }
}