:root {
  color-scheme: dark light;
  --ink: #0a0b0b;
  --panel: #141616;
  --line: #303331;
  --text: #f4f2ec;
  --muted: #aaa9a3;
  --signal: #ff5439;
  --focus: #ffcc55;
  font-family: "SUIT Variable", "Pretendard Variable", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
}

* { box-sizing: border-box; }
html { background: var(--ink); scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: radial-gradient(circle at 86% -8%, rgba(255,84,57,.18), transparent 31rem), var(--ink); line-height: 1.7; overflow-wrap: anywhere; }
a { color: inherit; text-underline-offset: .22em; }
a:focus-visible, button:focus-visible { outline: 3px solid var(--focus); outline-offset: 4px; border-radius: 3px; }
.skip-link { position: fixed; z-index: 10; top: .75rem; left: .75rem; padding: .65rem .9rem; background: var(--text); color: var(--ink); transform: translateY(-180%); }
.skip-link:focus { transform: translateY(0); }
.wrap { width: min(960px, calc(100% - 40px)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(10,11,11,.9); }
.header-inner { min-height: 70px; display: flex; align-items: center; justify-content: space-between; gap: 1.25rem; }
.brand { flex: none; text-decoration: none; font-size: .78rem; font-weight: 850; letter-spacing: .16em; }
.brand b, .eyebrow { color: var(--signal); }
.site-header nav { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .35rem 1rem; color: var(--muted); font-size: .9rem; }
.page-main { padding-bottom: 6rem; }
.breadcrumbs { margin: 1.5rem 0; color: var(--muted); font-size: .88rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; gap: .35rem; margin: 0; padding: 0; list-style: none; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: .35rem; color: var(--line); }
.page-hero { padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(3rem, 7vw, 5rem); border-bottom: 1px solid var(--line); }
.eyebrow { margin: 0 0 .9rem; font: 800 .78rem/1.4 ui-monospace, SFMono-Regular, Consolas, monospace; letter-spacing: .15em; }
h1, h2, h3 { letter-spacing: -.045em; line-height: 1.2; }
h1 { max-width: 850px; margin: 0; font-size: clamp(2.45rem, 7vw, 5.2rem); }
h2 { margin: 0 0 1rem; font-size: clamp(1.55rem, 3.5vw, 2.4rem); }
h3 { margin: 0 0 .5rem; font-size: 1.16rem; }
.direct-answer { max-width: 760px; margin: 1.4rem 0 0; color: #deddd6; font-size: clamp(1.15rem, 2.4vw, 1.45rem); }
.byline, .as-of { margin: 1rem 0 0; color: var(--muted); font-size: .88rem; }
.article-body { max-width: 780px; }
.content-section, .source-list, .related { padding: 3.5rem 0; border-bottom: 1px solid var(--line); }
.content-section > p, .source-list > p { margin: 0; }
.content-section ul, .content-section ol, .source-list ul, .related ul { padding-left: 1.25rem; }
.content-section li + li, .source-list li + li, .related li + li { margin-top: .7rem; }
.fact-block { margin-top: 2rem; padding: 1.5rem; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.fact-block p:first-child { font-size: 1.08rem; }
.source-marks { margin-left: .35rem; color: var(--muted); font-size: .8rem; }
.callout { margin: 2.5rem 0; padding: 1.35rem 1.5rem; border-left: 4px solid var(--signal); background: var(--panel); }
.callout strong { color: var(--signal); }
.callout p { margin: .4rem 0 0; }
.steps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; padding: 0; list-style: none; counter-reset: step; }
.steps li { min-width: 0; padding: 1.3rem; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); counter-increment: step; }
.steps li::before { content: counter(step, decimal-leading-zero); display: block; margin-bottom: 1rem; color: var(--signal); font: 800 .8rem/1 ui-monospace, monospace; }
.steps p { margin: 0; color: var(--muted); }
.faq article { padding: 1.25rem 0; }
.faq article + article { border-top: 1px solid var(--line); }
.faq p { margin: 0; color: var(--muted); }
.table-scroll { max-width: 100%; overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .75rem; border: 1px solid var(--line); text-align: left; vertical-align: top; }
.source-list li span { margin-left: .35rem; color: var(--muted); font-size: .8rem; }
.primary-cta { margin-top: 4rem; padding: clamp(2rem, 7vw, 4rem); border: 1px solid var(--line); border-radius: 16px; text-align: center; background: linear-gradient(145deg, rgba(255,84,57,.12), transparent 48%), var(--panel); }
.primary-cta h2 { margin-inline: auto; }
.primary-cta > p:not(.eyebrow, .secondary-action) { color: var(--muted); }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; margin-top: 1rem; padding: 0 1.2rem; border-radius: 8px; background: var(--signal); color: #170401; font-weight: 850; text-decoration: none; }
.secondary-action { margin: 1.2rem 0 0; font-size: .92rem; }
.card-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; padding: 3.5rem 0; }
.card-list article { min-width: 0; padding: 1.5rem; border: 1px solid var(--line); border-radius: 14px; background: var(--panel); }
.card-list h2 { font-size: 1.35rem; }
.card-list p:not(.eyebrow, .as-of) { color: var(--muted); }
.site-footer { padding: 1.75rem 0; border-top: 1px solid var(--line); color: var(--muted); font-size: .85rem; }
.site-footer .wrap { display: flex; justify-content: space-between; gap: 1rem; }

@media (max-width: 700px) {
  .wrap { width: min(100% - 32px, 960px); }
  .header-inner { align-items: flex-start; flex-direction: column; padding-block: 1rem; }
  .site-header nav { justify-content: flex-start; }
  .steps, .card-list { grid-template-columns: 1fr; }
  .page-hero { padding-top: 2.5rem; }
}

@media (prefers-color-scheme: light) {
  :root { --ink: #f6f7f3; --panel: #fff; --line: #d7dad3; --text: #191c19; --muted: #5d645d; --focus: #6b3b00; }
  body { background: radial-gradient(circle at 86% -8%, rgba(233,75,50,.15), transparent 31rem), var(--ink); }
  .site-header { background: rgba(246,247,243,.94); }
  .direct-answer { color: #303630; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}