/* 프로젝트 포스트 공통 스타일 — 홈페이지(index.html)와 같은 토큰 */
:root {
  color-scheme: dark;
  --canvas: #121317; --canvas2: #0b0c0f; --panel: #1a1c22; --panel2: #22252c; --well: #000000;
  --ink: #f8f9fc; --ink2: #c9cfd8; --muted: #8f98a6; --hair: rgba(255,255,255,.12); --hair2: rgba(255,255,255,.07);
  --action: #8ab4ff; --action-ink: #c6d8ff; --action-soft: rgba(138,180,255,.14);
  --glow1: #1b3fd1; --glow2: #6d3bd8; --glow3: #0b8a8f; --good: #7ad28f; --warn: #ffb86b;
  --sans: "DM Sans", "Apple SD Gothic Neo", "Malgun Gothic", system-ui, sans-serif;
  --serif: "DM Serif Display", "Times New Roman", serif;
  --mono: "DM Mono", ui-monospace, Consolas, monospace;
  --radius: 16px; --rail: 1120px; --measure: 720px;
}
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) {
  color-scheme: light;
  --canvas: #f9f9fb; --canvas2: #eef0f4; --panel: #ffffff; --panel2: #f1f3f7; --well: #121317;
  --ink: #121317; --ink2: #3b4250; --muted: #6b7482; --hair: rgba(18,19,23,.12); --hair2: rgba(18,19,23,.07);
  --action: #0000ee; --action-ink: #0000ee; --action-soft: rgba(0,0,238,.08);
  --glow1: #2a5bff; --glow2: #8a5cff; --glow3: #13a3a9; --good: #1a7f3a; --warn: #b86a00;
} }
:root[data-theme="light"] {
  color-scheme: light;
  --canvas: #f9f9fb; --canvas2: #eef0f4; --panel: #ffffff; --panel2: #f1f3f7; --well: #121317;
  --ink: #121317; --ink2: #3b4250; --muted: #6b7482; --hair: rgba(18,19,23,.12); --hair2: rgba(18,19,23,.07);
  --action: #0000ee; --action-ink: #0000ee; --action-soft: rgba(0,0,238,.08);
  --glow1: #2a5bff; --glow2: #8a5cff; --glow3: #13a3a9; --good: #1a7f3a; --warn: #b86a00;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--canvas); color: var(--ink); font-family: var(--sans); font-size: 17px; line-height: 1.65; -webkit-font-smoothing: antialiased; font-optical-sizing: auto; }
a { color: inherit; text-decoration: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 400; letter-spacing: -0.015em; text-wrap: balance; }
p { margin: 0; }
.rail { max-width: var(--rail); margin: 0 auto; padding-inline: clamp(20px, 4vw, 40px); }
.label { font-family: var(--mono); font-size: 12px; font-weight: 500; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 20px; border-radius: 999px; font-size: 15px; font-weight: 500; border: 1px solid var(--hair); color: var(--ink); background: transparent; transition: background .2s, border-color .2s; }
.btn:hover { background: var(--action-soft); border-color: var(--action); }
.btn.primary { background: var(--ink); color: var(--canvas); border-color: var(--ink); }
.btn.primary:hover { background: var(--action-ink); border-color: var(--action-ink); color: #0b0c0f; }

/* nav (홈과 동일) */
.nav { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 20; backdrop-filter: blur(14px); background: color-mix(in srgb, var(--canvas) 78%, transparent); border-bottom: 1px solid var(--hair2); }
.nav .rail { display: flex; align-items: center; justify-content: space-between; gap: 16px; height: 64px; }
.brand { font-weight: 500; font-size: 17px; display: inline-flex; align-items: center; gap: 10px; }
.brand i { width: 10px; height: 10px; border-radius: 50%; background: conic-gradient(from 200deg, var(--glow1), var(--glow2), var(--glow3), var(--glow1)); display: inline-block; }
.crumbs { display: inline-flex; gap: 10px; align-items: center; font-size: 14px; color: var(--muted); }
.crumbs a:hover { color: var(--ink); }
.nav-right { display: flex; align-items: center; gap: 8px; }
.icon-btn { width: 38px; height: 38px; border-radius: 999px; border: 1px solid var(--hair); background: transparent; color: var(--ink); cursor: pointer; display: inline-grid; place-items: center; }
.icon-btn:hover { background: var(--action-soft); }

/* 포스트 머리 */
.post-head { padding-block: clamp(40px, 6vw, 72px) 28px; display: grid; gap: 18px; }
.meta { display: flex; flex-wrap: wrap; gap: 8px 18px; font-size: 14px; color: var(--muted); }
.meta .cat { color: var(--action-ink); font-weight: 500; }
.title { font-size: clamp(34px, 5vw, 58px); line-height: 1.08; max-width: 22ch; }
.standfirst { font-size: clamp(18px, 2vw, 22px); line-height: 1.5; color: var(--ink2); font-weight: 300; max-width: 60ch; }
.cta { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.hero-media { margin-top: 22px; border-radius: var(--radius); overflow: hidden; background: var(--canvas2); border: 1px solid var(--hair2); }
.hero-media svg { display: block; width: 100%; height: auto; }
figcaption, .cap { font-size: 13.5px; color: var(--muted); font-style: italic; margin-top: 10px; line-height: 1.5; }
figure { margin: 0; }

/* 본문 */
.body { max-width: var(--measure); margin: 0 auto; padding-block: 36px 0; display: grid; gap: 22px; }
.body h2 { font-size: clamp(26px, 3vw, 34px); line-height: 1.2; margin-top: 30px; }
.body h3 { font-size: 21px; line-height: 1.3; margin-top: 10px; font-weight: 500; }
.body p { color: var(--ink2); font-weight: 300; }
.body p b, .body li b { color: var(--ink); font-weight: 500; }
.body ul, .body ol { margin: 0; padding-left: 1.2em; color: var(--ink2); font-weight: 300; display: grid; gap: 8px; }
.body code { font-family: var(--mono); font-size: .88em; background: var(--panel2); padding: 1px 6px; border-radius: 5px; color: var(--ink); }
.body table { border-collapse: collapse; width: 100%; font-size: 15px; }
.body th, .body td { text-align: left; padding: 10px 10px 10px 0; border-bottom: 1px solid var(--hair2); vertical-align: top; }
.body th { font-weight: 500; color: var(--muted); font-size: 13px; letter-spacing: .02em; }
.body td { color: var(--ink2); font-weight: 300; }
.body td:first-child { color: var(--ink); font-weight: 500; }
.tbl { overflow-x: auto; }
.key { background: var(--panel); border: 1px solid var(--hair2); border-radius: var(--radius); padding: 20px 22px; display: grid; gap: 10px; }
.key .label { color: var(--action-ink); }
.key ul { gap: 6px; }

/* 넓게 펼치는 블록 (데모·그림) */
.wide { max-width: var(--rail); margin: 30px auto 0; padding-inline: clamp(20px, 4vw, 40px); }
.demo-frame { background: var(--panel); border: 1px solid var(--hair2); border-radius: var(--radius); overflow: hidden; }
.demo-frame .bar { display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; padding: 12px 16px; border-bottom: 1px solid var(--hair2); font-size: 14px; color: var(--ink2); }
.demo-frame .bar b { color: var(--ink); font-weight: 500; }
.demo-frame .bar a { color: var(--action-ink); }
.demo-frame iframe { display: block; width: 100%; height: 1200px; border: 0; background: var(--canvas); transition: height .3s; }
.diagram { background: var(--panel); border: 1px solid var(--hair2); border-radius: var(--radius); padding: 16px; overflow-x: auto; }
.diagram svg { display: block; width: 100%; height: auto; min-width: 560px; }

/* 결과 지표 */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); border-top: 1px solid var(--hair); border-bottom: 1px solid var(--hair); margin-top: 6px; }
.stat { padding: 18px 16px 18px 0; border-right: 1px solid var(--hair2); display: grid; gap: 4px; }
.stat:last-child { border-right: 0; }
.stat + .stat { padding-left: 16px; }
.stat b { font-size: 30px; font-weight: 400; line-height: 1.1; letter-spacing: -0.02em; }
.stat span { font-size: 13px; color: var(--muted); }

/* 작성자·관련 */
.author { max-width: var(--measure); margin: 40px auto 0; padding-top: 22px; border-top: 1px solid var(--hair); display: grid; gap: 6px; font-size: 14.5px; color: var(--muted); }
.author b { color: var(--ink); font-weight: 500; }
.related { padding-block: 56px 72px; }
.related h2 { font-size: 24px; margin-bottom: 18px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.card { background: var(--panel); border: 1px solid var(--hair2); border-radius: var(--radius); padding: 20px; display: grid; gap: 8px; align-content: start; }
.card:hover { border-color: var(--action); }
.card .label { color: var(--action-ink); }
.card h3 { font-size: 19px; font-weight: 500; }
.card p { font-size: 14.5px; color: var(--ink2); font-weight: 300; }
.card .d { font-size: 13px; color: var(--muted); }
footer { background: var(--well); color: #b2bbc5; font-size: 13px; }
footer .rail { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px 24px; padding-block: 22px 34px; }
footer a:hover { color: #fff; }
@media (max-width: 640px) { .demo-frame iframe { height: 1500px; } }