:root {
  --bg: #f7f8f5; --surface: #ffffff; --text: #1c1e1b; --muted: #61665f; --border: #e3e6df;
  --accent: #2f7d4a; --accent-soft: #e6f2ea; --chip: #f0f2ed;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #111311; --surface: #1a1d1a; --text: #eef1ec; --muted: #a3a9a0; --border: #2b302a;
    --accent: #6fcf8f; --accent-soft: #1d2e22; --chip: #232823; color-scheme: dark; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); line-height: 1.65;
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Malgun Gothic", "Noto Sans KR", sans-serif; }
a { color: var(--accent); }
img { max-width: 100%; display: block; }
.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }
.muted { color: var(--muted); }

.topbar { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--border); }
.topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; gap: 12px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--text); text-decoration: none; }
.brand img { width: 30px; height: 30px; border-radius: 50%; }
nav { display: flex; gap: 4px; }
nav a { color: var(--muted); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-size: 15px; }
nav a:hover, nav a[aria-current="page"] { color: var(--text); background: var(--chip); }

h1 { font-size: clamp(30px, 6vw, 44px); line-height: 1.2; letter-spacing: -0.03em; margin: 0 0 12px; }
h2 { font-size: 22px; letter-spacing: -0.02em; margin: 64px 0 16px; }
h3 { font-size: 19px; margin: 0 0 6px; letter-spacing: -0.01em; }
section:first-child h2 { margin-top: 40px; }

.hero { display: flex; gap: 28px; align-items: center; padding: 56px 0 8px; }
.hero img { width: 112px; height: 112px; border-radius: 50%; flex-shrink: 0; border: 3px solid var(--surface); box-shadow: 0 4px 20px rgba(0,0,0,.08); }
.hero .role { display: inline-block; font-weight: 700; color: var(--accent); background: var(--accent-soft); padding: 2px 12px; border-radius: 999px; font-size: 14px; margin-bottom: 10px; }
.hero p { font-size: 17px; color: var(--muted); margin: 0 0 18px; max-width: 640px; }
@media (max-width: 600px) { .hero { flex-direction: column; align-items: flex-start; padding-top: 36px; } .hero img { width: 88px; height: 88px; } }

.btn { display: inline-block; font: inherit; font-size: 14px; font-weight: 600; padding: 8px 14px; border-radius: 9px;
  border: 1px solid var(--border); background: var(--surface); color: var(--text); text-decoration: none; }
.btn:hover { border-color: var(--accent); color: var(--accent); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { opacity: .9; color: #fff; }
@media (prefers-color-scheme: dark) { .btn.primary { color: #0d1a11; } .btn.primary:hover { color: #0d1a11; } }
.actions, .links { display: flex; gap: 8px; flex-wrap: wrap; }

.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.project { display: flex; flex-direction: column; min-width: 0; }
.project-image { display: block; aspect-ratio: 1200 / 630; background: var(--chip); overflow: hidden; border-bottom: 1px solid var(--border); }
.project-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.project-image:hover img { transform: scale(1.03); }
.project-image img.contain { object-fit: contain; padding: 12px; background: #fff; }
.project-body { padding: 18px 20px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.project-body p { margin: 0; }
.project-meta { display: flex; gap: 10px; font-size: 13px; color: var(--muted); }
.project-meta span + span::before { content: '·'; margin-right: 10px; }
.highlights { margin: 0; padding-left: 18px; font-size: 14.5px; }
.highlights li { margin-bottom: 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { font-size: 12.5px; padding: 3px 10px; border-radius: 999px; background: var(--chip); color: var(--muted); }
.links { margin-top: auto; padding-top: 4px; }
.project-large { display: grid; grid-template-columns: 1.15fr 1fr; }
/* 큰 카드의 이미지는 자르지 않고 칸 가운데에 원본 비율로 */
.project-large .project-image { aspect-ratio: auto; border-bottom: 0; border-right: 1px solid var(--border); display: flex; align-items: center; background: #fbfaf7; }
.project-large .project-image img { height: auto; aspect-ratio: 1200 / 630; }
@media (max-width: 760px) { .project-large { display: flex; } .project-large .project-image { aspect-ratio: 1200 / 630; border-right: 0; border-bottom: 1px solid var(--border); } }

.timeline { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--border); }
.timeline li { position: relative; padding: 0 0 22px 22px; }
.timeline li::before { content: ''; position: absolute; left: -7px; top: 7px; width: 12px; height: 12px; border-radius: 50%; background: var(--surface); border: 2px solid var(--accent); }
.timeline .period { font-size: 13px; color: var(--muted); }
.timeline strong { display: block; }
.timeline p { margin: 2px 0 0; color: var(--muted); font-size: 15px; }

.skills { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.skills .card { padding: 16px 18px; }
.skills h3 { font-size: 14px; color: var(--muted); font-weight: 600; margin-bottom: 10px; }

.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { display: flex; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--border); }
.post-list a { color: var(--text); text-decoration: none; font-weight: 600; }
.post-list a:hover { color: var(--accent); }
.post-list .excerpt { display: block; font-size: 14px; color: var(--muted); font-weight: 400; margin-top: 2px; }
.post-list time { color: var(--muted); font-size: 14px; white-space: nowrap; }
.section-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.section-head a { font-size: 14px; }
.filters { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 8px; }
.filters button { font: inherit; font-size: 14px; padding: 5px 12px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: var(--muted); cursor: pointer; }
.filters button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
.year { font-size: 15px; color: var(--muted); margin: 32px 0 0; }

.prose { max-width: 720px; }
.prose p, .prose li { font-size: 16.5px; }
.footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; padding-top: 32px; padding-bottom: 40px; margin-top: 72px; border-top: 1px solid var(--border); color: var(--muted); font-size: 14px; }
.footer-links { display: flex; gap: 14px; }
.footer a { color: var(--muted); }

/* ---------- 글 화면 (post·page 레이아웃) ---------- */
.skip-link { position: absolute; left: 8px; top: -48px; background: var(--accent); color: #fff; padding: 8px 12px; border-radius: 8px; z-index: 20; }
.skip-link:focus { top: 8px; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.article { max-width: 720px; margin: 0 auto; padding-top: 32px; }
.back-link { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; color: var(--muted); text-decoration: none; }
.back-link::before { content: '←'; }
.back-link:hover { color: var(--accent); }
.article-head { padding: 20px 0 8px; }
.article-head h1 { font-size: clamp(28px, 5vw, 38px); margin-bottom: 14px; word-break: keep-all; }
.article-meta { display: flex; flex-wrap: wrap; gap: 4px 14px; color: var(--muted); font-size: 14px; margin: 0 0 14px; }
.article-head .chips { margin: 0; }
a.chip { text-decoration: none; }
a.chip:hover { color: var(--accent); background: var(--accent-soft); }
.article-feature { margin: 16px 0 8px; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; overflow: hidden; display: flex; justify-content: center; }
.article-feature img { max-height: 320px; width: auto; max-width: 100%; object-fit: contain; }

/* 마크다운 본문 */
.post-body { padding: 16px 0 8px; word-break: keep-all; overflow-wrap: anywhere; }
.post-body > :first-child { margin-top: 0; }
.post-body h1 { font-size: 26px; margin: 48px 0 14px; }
.post-body h2 { font-size: 22px; margin: 44px 0 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.post-body h3 { font-size: 18.5px; margin: 32px 0 10px; }
.post-body h4, .post-body h5, .post-body h6 { font-size: 16.5px; margin: 24px 0 8px; }
.post-body p { margin: 0 0 16px; line-height: 1.8; }
.post-body ul, .post-body ol { padding-left: 1.4em; margin: 0 0 16px; }
.post-body li { margin-bottom: 6px; line-height: 1.75; }
.post-body li > ul, .post-body li > ol { margin: 6px 0 0; }
.post-body img { height: auto; margin: 16px auto; border-radius: 10px; border: 1px solid var(--border); }
.post-body a { text-underline-offset: 3px; }
.post-body hr { border: 0; border-top: 1px solid var(--border); margin: 36px 0; }
.post-body blockquote { margin: 0 0 16px; padding: 10px 16px; border-left: 4px solid var(--accent); background: var(--accent-soft); border-radius: 0 10px 10px 0; color: var(--text); }
.post-body blockquote p:last-child { margin-bottom: 0; }
.post-body code { font-family: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "D2Coding", monospace; font-size: .88em; background: var(--chip); padding: .15em .4em; border-radius: 6px; }
.post-body pre { tab-size: 2; margin: 0 0 20px; padding: 16px 18px; border-radius: 12px; border: 1px solid var(--border); overflow-x: auto; font-size: 14px; line-height: 1.6; }
.post-body pre code { background: none; padding: 0; font-size: inherit; }
.post-body .highlight { border-radius: 12px; }
.post-body div.highlighter-rouge, .post-body figure.highlight { margin: 0 0 20px; }
.post-body div.highlighter-rouge pre, .post-body figure.highlight pre { margin: 0; }
.post-body table { display: block; overflow-x: auto; border-collapse: collapse; margin: 0 0 20px; font-size: 15px; max-width: 100%; }
.post-body th, .post-body td { border: 1px solid var(--border); padding: 8px 12px; text-align: left; vertical-align: top; }
.post-body th { background: var(--chip); font-weight: 700; white-space: nowrap; }
.post-body iframe { display: block; width: 100%; max-width: 100%; aspect-ratio: 16 / 9; height: auto; border: 0; border-radius: 12px; margin: 16px 0; }
.post-body details { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 10px 16px; margin: 0 0 16px; }
.post-body summary { cursor: pointer; font-weight: 700; }
.post-body kbd { border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 5px; padding: 1px 6px; font-size: .88em; }

.post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 40px 0 0; padding-top: 24px; border-top: 1px solid var(--border); }
.post-nav a { display: grid; gap: 4px; padding: 14px 16px; text-decoration: none; color: var(--text); font-weight: 600; font-size: 15px; border-radius: 12px; }
.post-nav a:hover { border-color: var(--accent); color: var(--accent); }
.post-nav .muted { font-size: 13px; font-weight: 400; }
.post-nav .next { text-align: right; }
@media (max-width: 600px) { .post-nav { grid-template-columns: 1fr; } .post-nav .next { text-align: left; } }
.comments { margin-top: 40px; }
.tag-index { margin: 0 0 8px; }
.tag-group h2 { font-size: 19px; margin: 40px 0 4px; scroll-margin-top: 80px; }
.tag-group .post-list li { padding: 10px 0; }
.timeline li.current::before { background: var(--accent); }
.timeline-details { margin: 6px 0 0; padding-left: 18px; color: var(--muted); font-size: 15px; }
.timeline-details li { padding: 0; margin-bottom: 3px; }
.timeline-details li::before { content: none; }