/* 원문: connect.wrslab.app/pages/000000-claude-code-surfaces — 사이트 틀에 맞춰 body 여백만 main 으로 옮김, .callout 좌측 보더 → 위쪽 선 */
/* 공개 제품 비교 문서. 본문 폭 960px. */
:root {
  --bg: #f5f6f4;
  --surface: #ffffff;
  --ink: #171c1a;
  --muted: #5a6560;
  --faint: #8b9590;
  --line: #d8ddd9;
  --accent: #1d6b58;
  --accent-soft: #e0eee8;
  --claude: #b25a17;
  --claude-soft: #f7e9dc;
  --codex: #2f5fb3;
  --codex-soft: #e2eaf8;
  --google: #23803f;
  --google-soft: #dff1e4;
  --warn: #8a5a12;
  --warn-soft: #f5ebd6;
  --code-bg: #edf0ee;
  --font-body: "IBM Plex Sans KR", "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, Menlo, monospace;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111614; --surface: #19201d; --ink: #e4eae7; --muted: #9ba8a2; --faint: #6f7b76; --line: #2b3531;
    --accent: #6cc4a9; --accent-soft: #1b2f28;
    --claude: #e8a06a; --claude-soft: #3a2a1c; --codex: #8fb2f0; --codex-soft: #1d2840; --google: #7fcf95; --google-soft: #1b3324;
    --warn: #e2b46a; --warn-soft: #33291a; --code-bg: #222b27;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #111614; --surface: #19201d; --ink: #e4eae7; --muted: #9ba8a2; --faint: #6f7b76; --line: #2b3531;
  --accent: #6cc4a9; --accent-soft: #1b2f28;
  --claude: #e8a06a; --claude-soft: #3a2a1c; --codex: #8fb2f0; --codex-soft: #1d2840; --google: #7fcf95; --google-soft: #1b3324;
  --warn: #e2b46a; --warn-soft: #33291a; --code-bg: #222b27;
  color-scheme: dark;
}
* { box-sizing: border-box; }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--font-body); font-size: 16px; line-height: 1.7;
  margin: 0;
  word-break: keep-all; overflow-wrap: anywhere;
}
main { max-width: 1000px; margin: 0 auto; padding: 48px 20px 96px; display: grid; gap: 72px; }
h1, h2, h3, h4 { text-wrap: balance; line-height: 1.3; margin: 0; }
h1 { font-size: clamp(30px, 5.4vw, 46px); font-weight: 700; letter-spacing: -0.025em; }
h2 { font-size: clamp(22px, 3vw, 27px); font-weight: 700; letter-spacing: -0.01em; }
h3 { font-size: 17px; font-weight: 600; }
h4 { font-size: 15px; font-weight: 600; }
p { margin: 0; }
a { color: var(--accent); text-underline-offset: 2px; }
a:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
code, .mono { font-family: var(--font-mono); font-size: 0.86em; }
code { background: var(--code-bg); padding: 1px 6px; border-radius: 4px; }
.eyebrow { font-size: 12px; letter-spacing: 0.09em; color: var(--muted); font-weight: 600; text-transform: uppercase; }
section { display: grid; gap: 22px; }
.sec-head { display: grid; gap: 8px; max-width: 72ch; }
.muted { color: var(--muted); }
.small { font-size: 14px; }
.vendor-claude { color: var(--claude); }
.vendor-codex { color: var(--codex); }
.vendor-google { color: var(--google); }

/* 머리 */
header { display: grid; gap: 18px; }
.lede { font-size: 18px; color: var(--muted); max-width: 64ch; }
.answers { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.answer { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 18px; display: grid; gap: 8px; align-content: start; }
.answer .q { font-size: 13px; color: var(--muted); font-weight: 600; }
.answer .a { font-size: 15px; }
.answer b { color: var(--accent); }
@media (max-width: 780px) { .answers { grid-template-columns: 1fr; } }

/* 경쟁 차트 */
.chart-card { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 18px 18px 10px; display: grid; gap: 10px; }
.chart-scroll { overflow-x: auto; }
.chart-scroll svg { display: block; min-width: 760px; width: 100%; height: auto; }
.legend { display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: var(--muted); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.callouts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.callout { border-top: 2px solid var(--accent); padding: 12px 0 0; display: grid; gap: 4px; }
@media (max-width: 680px) { .callouts { grid-template-columns: 1fr; } }

/* 연표 */
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.filters button {
  font: inherit; font-size: 14px; padding: 5px 14px; border-radius: 999px; cursor: pointer;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink);
}
.filters button[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.tl { list-style: none; margin: 0; padding: 0; position: relative; }
.tl::before { content: ""; position: absolute; left: 118px; top: 0; bottom: 0; width: 2px; background: var(--line); }
.tl-year { position: relative; padding: 22px 0 8px 140px; font-family: var(--font-mono); font-size: 13px; font-weight: 600; color: var(--muted); letter-spacing: 0.06em; }
.tl-item { position: relative; display: grid; grid-template-columns: 104px 1fr; gap: 36px; padding: 10px 0; }
.tl-item time { text-align: right; font-family: var(--font-mono); font-size: 13px; color: var(--muted); padding-top: 3px; font-variant-numeric: tabular-nums; }
.tl-item::before { content: ""; position: absolute; left: 112px; top: 15px; width: 14px; height: 14px; border-radius: 50%; background: var(--surface); border: 3px solid var(--v); }
.tl-item.key::before { background: var(--v); }
.tl-body { display: grid; gap: 4px; min-width: 0; }
.tl-top { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: baseline; }
.tl-top h4 { font-size: 15.5px; }
.tag { font-size: 11.5px; font-weight: 600; padding: 1px 8px; border-radius: 999px; white-space: nowrap; }
.tag.v { color: var(--v); background: var(--vs); }
.tag.c { color: var(--muted); border: 1px solid var(--line); }
.tag.first { color: var(--accent); background: var(--accent-soft); }
.tag.approx { color: var(--warn); background: var(--warn-soft); }
.tl-body p { font-size: 14.5px; color: var(--muted); }
.tl-body a { font-size: 13px; }
.v-claude { --v: var(--claude); --vs: var(--claude-soft); }
.v-codex { --v: var(--codex); --vs: var(--codex-soft); }
.v-google { --v: var(--google); --vs: var(--google-soft); }
@media (max-width: 600px) {
  .tl::before { left: 6px; }
  .tl-year { padding-left: 28px; }
  .tl-item { grid-template-columns: 1fr; gap: 2px; padding-left: 28px; }
  .tl-item::before { left: 0; }
  .tl-item time { text-align: left; }
}

/* 인용 */
.quotes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.quote { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 18px; display: grid; gap: 10px; align-content: start; }
.quote blockquote { margin: 0; font-size: 15px; }
.quote .orig { font-size: 13px; color: var(--faint); font-style: italic; }
.quote .who { font-size: 13px; color: var(--muted); }
@media (max-width: 720px) { .quotes { grid-template-columns: 1fr; } }

/* 구조도 */
.arch { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
@media (max-width: 860px) { .arch { grid-template-columns: 1fr; } }
.stack { background: var(--surface); border: 1px solid var(--line); border-radius: 8px; padding: 16px; display: grid; gap: 0; align-content: start; }
.stack > h3 { margin-bottom: 4px; }
.stack > .sub { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
.layer { border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; display: grid; gap: 2px; background: var(--bg); }
.layer .ln { font-size: 11.5px; color: var(--faint); font-weight: 600; letter-spacing: 0.05em; }
.layer .lt { font-size: 14.5px; font-weight: 600; }
.layer .ld { font-size: 13px; color: var(--muted); }
.layer.engine { background: var(--accent-soft); border-color: var(--accent); }
.layer.engine .lt { color: var(--accent); }
.pipe { display: grid; justify-items: center; padding: 4px 0; }
.pipe span { font-family: var(--font-mono); font-size: 11.5px; color: var(--muted); background: var(--surface); padding: 0 6px; }
.pipe::before { content: ""; width: 2px; height: 10px; background: var(--line); }
.pipe::after { content: "▼"; font-size: 9px; color: var(--faint); line-height: 1; }
.branch { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* 표 */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
table { border-collapse: collapse; width: 100%; min-width: 760px; font-size: 14.5px; }
th, td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-size: 12.5px; color: var(--muted); font-weight: 600; background: var(--bg); white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
td.date { font-family: var(--font-mono); font-size: 13px; white-space: nowrap; font-variant-numeric: tabular-nums; }

.sources ol { margin: 0; padding-left: 22px; display: grid; gap: 5px; font-size: 14px; }
footer { font-size: 13px; color: var(--muted); }
.reading-nav { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 14px; }
/* 목차 줄은 화면 위에 고정. 배경·아래 구분선은 화면 끝까지 — border-image 바깥 칸(outset)은 그림만 넓히고 가로 스크롤을 만들지 않는다 */
.reading-nav {
  position: sticky; top: 0; z-index: 5; padding: 14px 0;
  border-image: linear-gradient(to top, var(--line) 1px, var(--bg) 1px) fill 0 / 0 / 0 100vmax;
}
main h2[id] { scroll-margin-top: 72px; }
@media (max-width: 780px) {
  .reading-nav { padding: 10px 0; gap: 6px 14px; }
  main h2[id] { scroll-margin-top: 96px; }
}
.sdk-points { margin: 0; }
.sdk-hero { margin: 0; display: grid; gap: 10px; }
.sdk-hero img { display: block; width: 100%; height: auto; border-radius: 8px; border: 1px solid var(--line); }
.sdk-hero figcaption { font-size: 14px; color: var(--muted); }
.sdk-points > div { display: grid; grid-template-columns: 190px 1fr; gap: 20px; padding: 20px 0; border-top: 1px solid var(--line); }
.sdk-points dt { font-weight: 600; }
.sdk-points dd { margin: 0; display: grid; gap: 8px; }
.sdk-points dd p { margin: 0; }
.sdk-article { display: grid; gap: 12px; padding: 22px 0; border-top: 1px solid var(--line); }
.sdk-article ul, .sdk-article ol { margin: 0; padding-left: 22px; display: grid; gap: 8px; }
.sdk-note { color: var(--muted); font-size: 14px; }
.verification-list { margin: 0; padding-left: 24px; display: grid; gap: 24px; }
.verification-list li { padding-left: 4px; }
.verification-list h3 { margin-bottom: 8px; }
.sdk-detail { border-top: 1px solid var(--line); padding: 16px 0; }
.sdk-detail summary { cursor: pointer; font-weight: 600; }
.sdk-detail p { margin-top: 12px; }
.sdk-detail summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
@media (prefers-reduced-motion: no-preference) { .tl-item { transition: opacity .2s; } }

/* 모바일은 본문 좌우 여백 한 겹만 사용하고 구분선으로 섹션을 나눈다. */
@media (max-width: 780px) {
  main { padding: 28px 16px 64px; }
  main { gap: 40px; }
  main > section { border-top: 1px solid var(--line); padding-top: 28px; min-width: 0; }
  .answers, .quotes, .arch, .callouts { grid-template-columns: 1fr; gap: 0; min-width: 0; }
  .answer, .quote, .stack, .chart-card, .table-wrap {
    background: transparent; border: 0; border-radius: 0; padding: 0; margin: 0; min-width: 0;
  }
  .answer, .quote, .stack, .callout { padding: 20px 0; border-top: 1px solid var(--line); }
  .answer .a, .quote blockquote { font-size: 16px; }
  .arch .stack:first-child, .quotes .quote:first-child { border-top: 0; padding-top: 0; }
  .layer { border: 1px solid var(--line); border-radius: 6px; padding: 12px; background: var(--surface); }
  .layer.engine { background: var(--accent-soft); border: 1px solid var(--accent); }
  .branch { grid-template-columns: 1fr; }
  .branch > div { min-width: 0; }
  .branch .layer + .layer { border-top: 1px solid var(--line); }
  .pipe span { background: var(--bg); }
  .chart-scroll, .table-wrap { max-width: 100%; }
  .sources ol { padding-left: 20px; }
  .sdk-points > div { grid-template-columns: 1fr; gap: 10px; }
}

.tl-src { font-size: 13px; }