:root {
	--ink: #1d1d1f;
	--muted: #5f6368;
	--accent: #0b5fff;
	--rule: #e3e5e8;
	--bg: #ffffff;
	--wash: #f6f7f9;
}
* { box-sizing: border-box; }
body {
	margin: 0;
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
	color: var(--ink);
	background: var(--bg);
	line-height: 1.65;
	font-size: 17px;
}
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px; }
a { color: var(--accent); }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; }

.masthead { border-bottom: 1px solid var(--rule); padding: 28px 0 16px; }
.site-title { font-size: 1.7rem; font-weight: 800; margin: 0; }
.site-title a { color: var(--ink); text-decoration: none; }
.site-tag { margin: 2px 0 12px; color: var(--muted); }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; gap: 22px; flex-wrap: wrap; }
.main-nav a { text-decoration: none; font-weight: 600; color: var(--ink); }
.main-nav a:hover { color: var(--accent); }

main.wrap { padding-top: 30px; padding-bottom: 40px; }
h1 { font-size: 1.9rem; line-height: 1.25; }
h2 { font-size: 1.35rem; margin-top: 2em; }
.meta { color: var(--muted); font-size: 0.9rem; }
.featured { margin: 1.5em 0; }
.body table { border-collapse: collapse; width: 100%; }
.body td, .body th { border: 1px solid var(--rule); padding: 6px 10px; }

.post-list { list-style: none; margin: 0; padding: 0; }
.post-list li { padding: 22px 0; border-bottom: 1px solid var(--rule); display: flex; gap: 18px; }
.post-list .thumb { flex: 0 0 140px; }
.post-list .thumb img { border-radius: 4px; }
.post-list h2 { font-size: 1.2rem; margin: 0 0 6px; }
.post-list h2 a { color: var(--ink); text-decoration: none; }
.post-list h2 a:hover { color: var(--accent); }
.post-list p { margin: 4px 0; color: var(--muted); font-size: 0.95rem; }
.post-list .date { font-size: 0.85rem; color: var(--muted); }

.post-tags { font-size: 0.85rem; color: var(--muted); }
.tag { background: var(--wash); border: 1px solid var(--rule); border-radius: 3px; padding: 1px 7px; }
.back-link { display: inline-block; margin-top: 1.5em; }

.hero { background: var(--wash); border: 1px solid var(--rule); border-radius: 8px; padding: 24px; margin-bottom: 34px; }
.hero h2 { margin-top: 0; }
.newsletter input[type="email"] { padding: 10px 12px; font-size: 1rem; width: 100%; max-width: 340px; border: 1px solid var(--rule); border-radius: 4px; }
.newsletter button { padding: 10px 18px; font-size: 1rem; background: var(--accent); color: #fff; border: 0; border-radius: 4px; cursor: pointer; }
.newsletter button:hover { background: #0849c4; }
.privacy { font-size: 0.85rem; color: var(--muted); }

.site-footer { border-top: 1px solid var(--rule); padding: 30px 0 40px; margin-top: 20px; }
.site-footer .newsletter { margin-bottom: 24px; }
.creds { color: var(--muted); font-size: 0.9rem; }

.archive-year { margin-top: 2em; }
.archive-year ul { list-style: none; padding: 0; }
.archive-year li { padding: 4px 0; }
.archive-year .date { color: var(--muted); font-size: 0.85rem; margin-right: 10px; }

iframe { max-width: 100%; }

/* nav submenu */
.main-nav .has-sub { position: relative; }
.main-nav .sub { display: none; position: absolute; top: 100%; left: 0; background: #fff; border: 1px solid var(--line); border-radius: 8px; padding: 8px 0; min-width: 160px; box-shadow: 0 8px 24px rgba(0,0,0,.08); z-index: 50; }
.main-nav .has-sub:hover .sub, .main-nav .has-sub:focus-within .sub { display: block; }
.main-nav .sub li { display: block; }
.main-nav .sub a { display: block; padding: 8px 16px; white-space: nowrap; }