:root {
  color-scheme: dark light;
  --ink: #0a0b0b;
  --panel: #141616;
  --line: #303331;
  --text: #f4f2ec;
  --muted: #aaa9a3;
  --signal: #ff5439;
  --soft-signal: rgba(255, 84, 57, 0.14);
  font-family: "SUIT Variable", "Pretendard Variable", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--ink); }
body { margin: 0; color: var(--text); background: radial-gradient(circle at 86% -8%, rgba(255,84,57,.18), transparent 31rem), var(--ink); line-height: 1.65; }
a { color: inherit; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
.topbar { border-bottom: 1px solid var(--line); background: rgba(10,11,11,.88); }
.topbar .wrap { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { text-decoration: none; font-size: .78rem; font-weight: 800; letter-spacing: .16em; }
.brand b { color: var(--signal); }
.back { color: var(--muted); font-size: .9rem; text-underline-offset: .25em; }
.hero { padding: clamp(4.5rem, 12vw, 8.5rem) 0 4.5rem; }
.eyebrow { margin: 0 0 1rem; color: var(--signal); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .78rem; font-weight: 800; letter-spacing: .15em; }
h1,h2,h3 { letter-spacing: -.055em; line-height: 1.16; }
h1 { max-width: 850px; margin: 0; font-size: clamp(2.65rem, 7vw, 5.9rem); }
.lead { max-width: 690px; margin: 1.5rem 0 0; color: #d1d0c9; font-size: clamp(1.12rem, 2.2vw, 1.4rem); }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; margin-top: 2rem; padding: 0 1.25rem; border-radius: 8px; background: var(--signal); color: #170401; font-weight: 850; text-decoration: none; box-shadow: 0 12px 28px rgba(255,84,57,.25); }
.proof { display: flex; flex-wrap: wrap; gap: .5rem 1.2rem; margin-top: 2rem; color: var(--muted); font-size: .9rem; }
.proof span::before { content: "•"; padding-right: .5rem; color: var(--signal); }
section { padding: 5rem 0; border-top: 1px solid var(--line); }
h2 { max-width: 710px; margin: 0 0 1rem; font-size: clamp(1.8rem, 4vw, 3.25rem); }
.section-copy { max-width: 690px; margin: 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; margin-top: 2.3rem; }
.card { min-height: 210px; padding: 1.5rem; border: 1px solid var(--line); border-radius: 14px; background: linear-gradient(145deg, rgba(255,84,57,.08), transparent 42%), var(--panel); }
.number { display: block; margin-bottom: 2rem; color: var(--signal); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .8rem; font-weight: 800; }
h3 { margin: 0 0 .65rem; font-size: 1.25rem; }
.card p, .faq p { margin: 0; color: var(--muted); font-size: .96rem; }
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin-top: 2.4rem; border: 1px solid var(--line); background: var(--line); }
.step { min-height: 210px; padding: 1.5rem; background: var(--ink); }
.step strong { display: block; margin-bottom: .75rem; color: var(--signal); font-family: ui-monospace, SFMono-Regular, Consolas, monospace; font-size: .8rem; letter-spacing: .08em; }
.faq { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; margin-top: 2.3rem; }
.faq article { padding: 1.5rem; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.faq h3 { font-size: 1.08rem; }
.closing { padding-bottom: 7rem; text-align: center; }
.closing h2 { margin-inline: auto; }
.closing p { max-width: 570px; margin: 0 auto; color: var(--muted); }
.footer { padding: 1.75rem 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.footer .wrap { display: flex; justify-content: space-between; gap: 1rem; }
@media (max-width: 760px) {
  .wrap { width: min(100% - 32px, 1120px); }
  .grid, .faq { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  section { padding: 3.5rem 0; }
}
@media (max-width: 440px) { .steps { grid-template-columns: 1fr; } .topbar .wrap { min-height: 62px; } }
@media (prefers-color-scheme: light) {
  :root { --ink: #f6f7f3; --panel: #fff; --line: #d7dad3; --text: #191c19; --muted: #5d645d; --soft-signal: rgba(233,75,50,.1); }
  body { background: radial-gradient(circle at 86% -8%, rgba(233,75,50,.15), transparent 31rem), var(--ink); }
  .topbar { background: rgba(246,247,243,.92); }
  .step { background: var(--ink); }
  .lead { color: #3b413b; }
}