:root{--w: 720px;--wide: 1080px;--bg: #fff;--fg: #1a1a1a;--muted: #6b6b6b;--line: #e7e7e7;--accent: #c2410c;--card: #fafafa;--font: "Pretendard", system-ui, -apple-system, "Apple SD Gothic Neo", "Helvetica Neue", sans-serif}@media(prefers-color-scheme:dark){:root{--bg: #0f0f10;--fg: #ececec;--muted: #9a9a9a;--line: #262626;--accent: #fb923c;--card: #18181a}}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);line-height:1.75;-webkit-font-smoothing:antialiased}a{color:inherit}img{max-width:100%;height:auto}main{max-width:var(--wide);margin:0 auto;padding:2rem 1.25rem 4rem}.site-header{border-bottom:1px solid var(--line);position:sticky;top:0;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);z-index:10}.bar{max-width:var(--wide);margin:0 auto;padding:.9rem 1.25rem;display:flex;justify-content:space-between;align-items:center}.brand{font-weight:800;font-size:1.2rem;text-decoration:none;letter-spacing:-.02em}.langs{display:flex;align-items:center;gap:.25rem}.langs .globe{font-size:.95rem;margin-right:.15rem;opacity:.8}.langs a{font-size:.8rem;font-weight:600;letter-spacing:.02em;text-decoration:none;color:var(--muted);padding:.15rem .4rem;border-radius:6px}.langs a:hover{color:var(--accent)}.langs a.on{color:#fff;background:var(--accent)}.cats{max-width:var(--wide);margin:0 auto;padding:0 1.25rem .7rem;display:flex;gap:1.1rem;overflow-x:auto}.cats a{white-space:nowrap;font-size:.9rem;text-decoration:none;color:var(--muted);padding-bottom:2px}.cats a:hover{color:var(--accent)}.site-footer{border-top:1px solid var(--line);text-align:center;padding:3rem 1.25rem;color:var(--muted)}.f-brand{font-weight:800;color:var(--fg);font-size:1.05rem}.f-tag{margin:.4rem 0 1rem;font-size:.9rem}.f-social{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.f-social a{font-size:.85rem;text-decoration:none;color:var(--fg);border:1px solid var(--line);padding:.35rem .8rem;border-radius:999px}.f-social a:hover{border-color:var(--accent);color:var(--accent)}.f-copy{margin-top:1.5rem;font-size:.8rem}.grid{list-style:none;padding:0;margin:2rem 0 0;display:grid;gap:2rem;grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.card a{text-decoration:none;color:inherit;display:block}.card .thumb{aspect-ratio:3/2;width:100%;object-fit:cover;border-radius:12px;background:var(--card)}.card .ph{aspect-ratio:3/2;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--card),color-mix(in srgb,var(--accent) 14%,var(--card)))}.card .ph:after{content:"ohwalker.com";font-weight:800;letter-spacing:.02em;opacity:.5;color:color-mix(in srgb,var(--accent) 65%,var(--fg))}.card h2{font-size:1.15rem;margin:.7rem 0 .3rem;line-height:1.35;letter-spacing:-.01em}.card p{margin:0;color:var(--muted);font-size:.92rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.card .meta{margin-top:.5rem;font-size:.78rem;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}article{max-width:var(--w);margin:0 auto}article h1{font-size:clamp(1.7rem,4vw,2.4rem);line-height:1.2;letter-spacing:-.02em;margin:.2rem 0 .6rem}article h2{margin-top:2.2rem;letter-spacing:-.01em}article img{border-radius:10px;margin:1.2rem 0}article blockquote{border-left:3px solid var(--accent);margin:1.4rem 0;padding:.2rem 0 .2rem 1rem;color:var(--muted)}article hr{border:none;border-top:1px solid var(--line);margin:2rem 0}article table{display:block;width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;border-collapse:collapse;font-size:.9rem;margin:1.2rem 0}article th,article td{border:1px solid var(--line);padding:.45rem .65rem;text-align:left;vertical-align:top}article thead th{background:var(--card);white-space:nowrap}.course-spec{max-width:100%;box-sizing:border-box}.course-elev{max-width:100%}.crumb{font-size:.8rem;color:var(--muted);margin-bottom:.8rem}.crumb a{text-decoration:none}.page-title{max-width:var(--wide);margin:0 auto}.page-title h1{font-size:clamp(1.6rem,4vw,2.2rem);letter-spacing:-.02em}