:root {
  --bg: #ffffff; --ink: #111111; --muted: #4b4b4b; --line: #111111; --soft: #f3f3f1;
  --red: #cd2e3a; --blue: #0047a0; --on-accent: #ffffff;
  --display: "Gothic A1", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  --body: system-ui, -apple-system, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", sans-serif;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b0b0c; --ink: #f4f4f4; --muted: #b9b9b9; --line: #f4f4f4; --soft: #19191b;
          --red: #ff5a67; --blue: #6ea6ff; --on-accent: #0b0b0c; color-scheme: dark; }
}
:lang(ja) { --body: system-ui, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", sans-serif; }
:lang(zh-Hans) { --body: system-ui, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif; }
:lang(ko) { word-break: keep-all; overflow-wrap: anywhere; }
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 17px/1.65 var(--body); }
a { color: var(--blue); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible + .box { outline: 3px solid var(--red); outline-offset: 2px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--ink); color: var(--bg); padding: 8px 12px; }
.skip:focus { left: 16px; }
.wrap { max-width: 1200px; margin: 0 auto;
  padding-left: max(18px, env(safe-area-inset-left, 0px)); padding-right: max(18px, env(safe-area-inset-right, 0px)); }

.flagline { height: 6px; background: linear-gradient(90deg, var(--red) 0 50%, var(--blue) 50% 100%); }
header.site { border-bottom: 2px solid var(--line); }
header.site .bar1 { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; padding-block: 14px; }
nav.sections { border-top: 1px solid var(--line); }
nav.sections .wrap { display: flex; gap: 4px; overflow-x: auto; }
nav.sections a { display: flex; align-items: center; gap: 8px; white-space: nowrap; padding: 12px 14px; color: var(--ink); text-decoration: none; font-weight: 700; font-size: 15px; border-bottom: 4px solid transparent; }
nav.sections a:hover { background: var(--soft); }
nav.sections a[aria-current="page"] { border-bottom-color: var(--blue); }
nav.sections .tri { width: 20px; gap: 2px; } nav.sections .tri i { height: 3px; }
.brand { display: flex; align-items: center; gap: 10px; font: 900 18px/1 var(--display); color: var(--ink); text-decoration: none; letter-spacing: -.01em; }
.logo { width: 38px; height: 38px; flex: none; }
.brand .bt { display: grid; gap: 4px; }
.brand .w { font: 900 22px/1.05 var(--display); letter-spacing: 0; }
.brand .s { font: 700 10.5px/1 var(--body); letter-spacing: .16em; text-transform: uppercase; color: var(--muted); }
nav.langs { display: flex; gap: 2px; flex-wrap: wrap; }
nav.langs a { font: 700 14px/1 var(--body); color: var(--ink); text-decoration: none; padding: 9px 10px; border-bottom: 3px solid transparent; }
nav.langs a[aria-current="page"] { border-bottom-color: var(--red); }

.hero { padding-block: 40px 12px; display: grid; gap: 18px 48px; align-items: center; }
.hero .intro { display: grid; gap: 18px; max-width: 900px; }
h1 { font: 900 clamp(30px, 6vw, 52px)/1.2 var(--display); margin: 0; letter-spacing: 0; text-wrap: balance; }
.lede { margin: 0; color: var(--muted); max-width: 62ch; }
.eyebrow { margin: 0; font: 700 13px/1 var(--body); letter-spacing: .08em; text-transform: uppercase; color: var(--red); }
.points { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 0; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); border-block: 2px solid var(--line); }
.points li { padding: 18px 20px 18px 0; display: grid; gap: 6px; }
.points li + li { padding-left: 20px; border-left: 1px solid var(--line); }
@media (max-width: 800px) { .points li + li { border-left: 0; border-top: 1px solid var(--line); padding-left: 0; } }
.points strong { font: 900 19px/1.3 var(--display); }
.points span { color: var(--muted); font-size: 15px; }

.tri { display: inline-grid; gap: 3px; width: 26px; flex: none; }
.tri i { display: block; height: 4px; background: var(--ink); }
.tri i.b { background: linear-gradient(90deg, var(--ink) 0 42%, transparent 42% 58%, var(--ink) 58%); }

section.block { padding-block: 34px 6px; display: grid; gap: 16px; scroll-margin-top: 12px; }
.stages { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.stage { border: 2px solid var(--line); display: grid; grid-template-rows: auto auto 1fr auto; color: var(--ink); text-decoration: none; }
.stage:hover { background: var(--soft); }
.stage .head { display: flex; align-items: center; gap: 12px; padding: 16px 18px 6px; font: 900 24px/1.2 var(--display); }
.stage p { margin: 0; padding: 0 18px 10px; color: var(--muted); font-size: 15px; }
.stage ul { margin: 0; padding: 0 18px 14px 36px; font-size: 15px; }
.stage .go { border-top: 2px solid var(--line); padding: 10px 18px; font-weight: 700; color: var(--blue); display: flex; justify-content: space-between; }
.page-head { padding-block: 36px 4px; display: grid; gap: 10px; }
.page-head h1 { display: flex; align-items: center; gap: 16px; }
.page-head .tri { width: 40px; gap: 5px; } .page-head .tri i { height: 6px; }
.next { margin-top: 28px; display: flex; justify-content: flex-end; }
.next a { border: 2px solid var(--line); padding: 12px 18px; font-weight: 700; text-decoration: none; color: var(--ink); }
.next a:hover { background: var(--soft); }
h2 { font: 900 clamp(23px, 4.2vw, 31px)/1.25 var(--display); margin: 0; display: flex; align-items: center; gap: 12px; letter-spacing: 0; }
.block > .lede { margin-top: -6px; }

.checklist { list-style: none; margin: 0; padding: 0; border: 2px solid var(--line); display: grid; }
@media (min-width: 900px) { .checklist { grid-template-columns: 1fr 1fr; } .checklist li:nth-child(even) { border-left: 1px solid var(--line); } }
.checklist li { border-top: 1px solid var(--line); margin-top: -1px; }
.check { display: grid; grid-template-columns: 26px 1fr; gap: 12px; padding: 13px 16px; cursor: pointer; }
.check input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.check .box { width: 24px; height: 24px; border: 2px solid var(--ink); display: grid; place-items: center; margin-top: 2px; }
.check input:checked + .box { background: var(--blue); border-color: var(--blue); }
.check input:checked + .box::after { content: ""; width: 6px; height: 12px; border: solid var(--on-accent); border-width: 0 3px 3px 0; transform: rotate(45deg) translate(-1px, -2px); }
.check strong { display: block; }
.check span.d { display: block; font-size: 15px; color: var(--muted); }
.hint { font-size: 13px; color: var(--muted); margin: 0; }

.cards { display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 360px), 1fr)); align-items: start; }
.card { border: 2px solid var(--line); display: grid; }
.card .top { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 16px; border-bottom: 2px solid var(--line); flex-wrap: wrap; }
.card .cat { display: flex; align-items: center; gap: 8px; font: 700 13px/1 var(--body); letter-spacing: .06em; text-transform: uppercase; color: var(--blue); }
.card .cat svg { width: 20px; height: 20px; fill: none; stroke: var(--blue); stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.card .local { font-size: 14px; color: var(--muted); }
.card .main { padding: 16px; display: grid; gap: 12px; min-width: 0; }
.card h3 { margin: 0; font: 900 23px/1.25 var(--display); letter-spacing: 0; }
.card p { margin: 0; }
.note { display: grid; grid-template-columns: 22px 1fr; gap: 10px; background: var(--soft); padding: 10px 12px; font-size: 15px; }
.note b { color: var(--red); font: 900 18px/1.4 var(--display); text-align: center; }
.src { font-size: 13px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 10px; display: grid; gap: 4px; }
.src ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 3px; }
.src a { overflow-wrap: anywhere; }
.src time, .src .d { color: var(--muted); }

footer.site { border-top: 2px solid var(--line); }
footer.site .wrap { padding-block: 22px 40px; display: grid; gap: 10px; font-size: 14px; color: var(--muted); }
footer.site p { margin: 0; max-width: 70ch; }
footer.site nav { display: flex; gap: 16px; flex-wrap: wrap; }
.prose { max-width: 820px; }
.fresh { margin: 0; font-size: 14px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 4px 14px; }
.fresh b { color: var(--ink); font-weight: 700; }
.crumbs { font-size: 14px; color: var(--muted); }
.crumbs a { color: var(--muted); }
.facts { border: 2px solid var(--blue); padding: 16px 20px; }
.facts h2 { font-size: 18px; color: var(--blue); margin-bottom: 8px; }
.facts ul { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
@media (min-width: 900px) { .facts ul { grid-template-columns: 1fr 1fr; column-gap: 40px; } }
.links { display: flex; flex-wrap: wrap; gap: 8px; }
.links a { display: inline-flex; align-items: center; gap: 6px; border: 2px solid var(--ink); padding: 7px 12px; font: 700 14px/1 var(--body); color: var(--ink); text-decoration: none; }
.links a:hover { background: var(--ink); color: var(--bg); }
.help { margin-top: 44px; background: var(--ink); color: var(--bg); }
.help .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 28px; padding-block: 16px; }
.help strong { font: 900 17px/1.2 var(--display); }
.help span { font-size: 15px; }
.help b { font: 900 20px/1 var(--display); margin-right: 6px; font-variant-numeric: tabular-nums; }
.help .r b { color: #ff6b76; }
.kr { display: inline-flex; align-items: center; gap: 6px; font: 700 13px/1.2 var(--body); padding: 5px 9px; border: 2px solid currentColor; justify-self: start; width: fit-content; }
.kr::before { font: 900 14px/1 var(--display); }
.kr-no { color: var(--blue); } .kr-no::before { content: "✓"; }
.kr-yes { color: var(--red); } .kr-yes::before { content: "!"; }
.kr-unknown { color: var(--muted); border-style: dashed; } .kr-unknown::before { content: "?"; }
.glance { overflow-x: auto; }
.glance table { border-collapse: collapse; width: 100%; min-width: 520px; border: 2px solid var(--line); }
.glance th, .glance td { text-align: left; padding: 10px 14px; border-top: 1px solid var(--line); font-size: 15px; vertical-align: middle; }
.glance th { font-size: 13px; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); border-top: 0; }
.glance td a { color: var(--ink); font-weight: 700; }
.guide-link { font-weight: 700; text-decoration: none; }
.guide-link:hover { text-decoration: underline; }
.topic { display: grid; gap: 32px; padding-block: 8px; }
@media (min-width: 1000px) { .topic { grid-template-columns: minmax(0, 1fr) 300px; align-items: start; } .rail { position: sticky; top: 16px; grid-column: 2; grid-row: 1; } .topic article { grid-column: 1; grid-row: 1; } }
.rail { display: grid; gap: 16px; align-content: start; }
.ad { display: grid; gap: 6px; }
.ad > span { font-size: 12px; color: var(--muted); letter-spacing: .06em; text-transform: uppercase; }
.ad .ph { border: 2px dashed var(--muted); min-height: 250px; display: grid; place-items: center; color: var(--muted); font-size: 14px; }
.layout { display: grid; gap: 24px; margin-top: 24px; }
@media (min-width: 1000px) { .layout { grid-template-columns: minmax(0, 1fr) 300px; align-items: start; } .layout > .rail { position: sticky; top: 16px; } }
.layout .cards { grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); }
.jump { border: 2px solid var(--line); padding: 14px 16px; font-size: 15px; }
.jump b { display: block; margin-bottom: 8px; }
.jump ul { margin: 0; padding-left: 18px; display: grid; gap: 5px; }
.jump a { color: var(--ink); }
.topic article { display: grid; gap: 30px; min-width: 0; max-width: 760px; }
.topic article section { display: grid; gap: 12px; scroll-margin-top: 16px; }
.topic article h2 { font-size: 26px; }
.topic article section p { margin: 0; }
.answer { border-left: 6px solid var(--red); background: var(--soft); padding: 16px 20px; font-size: 19px; line-height: 1.55; }
.answer b { display: block; font: 700 13px/1 var(--body); letter-spacing: .06em; text-transform: uppercase; color: var(--red); margin-bottom: 8px; }
.toc { border: 2px solid var(--line); padding: 14px 16px; font-size: 15px; }
.toc b { display: block; margin-bottom: 8px; }
.toc ol { margin: 0; padding-left: 20px; display: grid; gap: 6px; }
.toc a { color: var(--ink); }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; counter-reset: s; border: 2px solid var(--line); }
.steps li { counter-increment: s; display: grid; grid-template-columns: 56px 1fr; gap: 14px; padding: 14px 16px; align-items: start; }
.steps li + li { border-top: 1px solid var(--line); }
.steps li::before { content: counter(s); font: 900 34px/1 var(--display); color: var(--blue); }
.steps strong { display: block; font-size: 18px; }
.steps span { color: var(--muted); }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.ticks li { padding-left: 28px; position: relative; }
.ticks li::before { content: ""; position: absolute; left: 4px; top: .45em; width: 10px; height: 10px; background: var(--blue); }
.ticks.x li::before { background: var(--red); }
.plain { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
details.q { border: 2px solid var(--line); }
details.q + details.q { border-top: 0; }
details.q summary { cursor: pointer; padding: 12px 16px; font-weight: 700; list-style-position: inside; }
details.q p { margin: 0; padding: 0 16px 14px; }
.prose h2 { margin-top: 28px; font-size: 22px; }
.prose p, .prose li { max-width: 68ch; }