/* Silver Turtle: deniz kabuğu gümüşü + derin deniz yeşili. Tek sütun, okunur metin. */
:root {
  --bg: #f4f6f5;
  --panel: #ffffff;
  --fg: #16201e;
  --muted: #56645f;
  --line: #d6ddda;
  --accent: #1d5f57;
  --silver: #9aa7a3;
  --font-display: "Fraunces", Georgia, serif;
  --font-body: "Figtree", "Segoe UI", system-ui, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #101614; --panel: #17201d; --fg: #e6ece9; --muted: #9eaca7; --line: #27322e; --accent: #6cc3b5; --silver: #7d8b86; color-scheme: dark; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--fg);
  font-family: var(--font-body); font-size: 17px; line-height: 1.6;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 32px 20px 64px; }
header.site { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-bottom: 24px; border-bottom: 1px solid var(--line); margin-bottom: 40px; }
.brand { display: flex; align-items: center; gap: 12px; color: var(--fg); text-decoration: none; }
.brand svg { width: 40px; height: 40px; }
.brand span { font-family: var(--font-display); font-size: 24px; font-weight: 600; letter-spacing: .01em; }
nav { display: flex; gap: 18px; flex-wrap: wrap; }
nav a { color: var(--muted); text-decoration: none; font-size: 15px; }
nav a:hover, nav a[aria-current="page"] { color: var(--accent); }
h1 { font-family: var(--font-display); font-weight: 600; font-size: clamp(32px, 6vw, 48px); line-height: 1.1; margin: 0 0 16px; text-wrap: balance; }
h2 { font-family: var(--font-display); font-weight: 600; font-size: 22px; margin: 36px 0 8px; }
p, li { color: var(--fg); }
.lead { font-size: 19px; color: var(--muted); max-width: 56ch; }
.muted { color: var(--muted); font-size: 15px; }
a { color: var(--accent); }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 10px; padding: 20px 22px; margin-top: 28px; }
footer { margin-top: 56px; padding-top: 20px; border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; display: flex; gap: 16px; flex-wrap: wrap; justify-content: space-between; }
footer a { color: var(--muted); }