:root {
  --paper: #f6f3ec; --paper-2: #efeadf; --ink: #1c1b19; --ink-2: #4a4740;
  --muted: #7d786d; --line: #dcd6c8; --green: #1f4d3a; --green-soft: #e1ebe4;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { background: var(--paper); color: var(--ink); font-family: var(--sans); line-height: 1.7; font-size: 16px; -webkit-font-smoothing: antialiased; }
a { color: var(--green); }
a:hover { text-decoration: underline; }
.wrap { max-width: 820px; margin: 0 auto; padding: 0 clamp(20px, 5vw, 40px); }

header { border-bottom: 1px solid var(--line); background: var(--paper); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; justify-content: space-between; align-items: center; height: 68px; }
.logo-img { height: 36px; width: auto; display: block; }
.logo-placeholder { display: inline-flex; align-items: center; justify-content: center; height: 36px; min-width: 96px; padding: 0 12px; border: 1.5px dashed var(--green); border-radius: 6px; font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em; color: var(--green); background: var(--green-soft); }
.back { font-size: 0.92rem; color: var(--ink-2); }
.back:hover { color: var(--green); text-decoration: none; }

.doc-head { padding: 64px 0 36px; border-bottom: 1px solid var(--ink); margin-bottom: 40px; }
.eyebrow { font-size: 0.8rem; font-weight: 500; color: var(--green); text-transform: uppercase; letter-spacing: 0.12em; display: block; margin-bottom: 14px; }
h1 { font-family: var(--serif); font-weight: 500; font-size: clamp(2.2rem, 5vw, 3.2rem); line-height: 1.1; letter-spacing: -0.025em; margin-bottom: 14px; }
.updated { color: var(--muted); font-size: 0.92rem; }

article h2 { font-family: var(--serif); font-weight: 500; font-size: 1.55rem; letter-spacing: -0.01em; margin: 44px 0 12px; }
article h3 { font-size: 1rem; font-weight: 600; margin: 22px 0 8px; }
article p { color: var(--ink-2); margin-bottom: 14px; }
article ul { color: var(--ink-2); margin: 0 0 16px 22px; }
article li { margin-bottom: 8px; }
article strong { color: var(--ink); }
.note { background: var(--green-soft); border-left: 3px solid var(--green); padding: 16px 20px; border-radius: 6px; margin: 20px 0 28px; color: var(--ink-2); font-size: 0.95rem; }
.placeholder { font-family: var(--mono); background: #fff7e0; padding: 1px 6px; border-radius: 4px; font-size: 0.9em; color: #7a5a12; }

.toc { margin: 0 0 40px; padding: 22px 26px; background: var(--paper-2); border-radius: 10px; }
.toc p { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--muted); margin-bottom: 10px; }
.toc ol { margin-left: 20px; color: var(--ink-2); }
.toc li { margin-bottom: 4px; }

footer { border-top: 1px solid var(--line); margin-top: 70px; padding: 36px 0 50px; font-size: 0.88rem; color: var(--muted); }
.footer-links { display: flex; gap: 22px; flex-wrap: wrap; margin-bottom: 14px; }
.footer-links a { color: var(--ink-2); }

.notfound { text-align: center; padding: 120px 0; }
.notfound .code { font-family: var(--serif); font-size: 6rem; color: var(--green); line-height: 1; }
.notfound p { color: var(--ink-2); margin: 16px 0 30px; }
.btn { display: inline-block; padding: 12px 22px; border-radius: 6px; background: var(--green); color: var(--paper); font-weight: 500; }
.btn:hover { text-decoration: none; opacity: 0.92; }