* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  background: #f8f7f4;
  color: #2d2d2d;
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}
.container {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px;
}

/* Header */
header {
  text-align: center;
  padding-bottom: 28px;
  border-bottom: 1px solid #e2e0db;
  margin-bottom: 40px;
}
header h1 {
  font-size: 20px;
  font-weight: 400;
  color: #2d2d2d;
  letter-spacing: 5px;
  font-family: 'Menlo', 'Courier New', monospace;
}
header h1 a { color: #2d2d2d; text-decoration: none; }
header h1 a:hover { color: #3d7c98; }
.tagline {
  color: #6b6b6b;
  font-size: 16px;
  margin-top: 10px;
  font-style: italic;
}
.byline {
  color: #9a9a9a;
  font-size: 11px;
  margin-top: 14px;
  font-family: 'Menlo', monospace;
  letter-spacing: 1.5px;
}
header nav {
  margin-top: 14px;
  font-family: Menlo, monospace;
  font-size: 12px;
  letter-spacing: 1px;
}
header nav a { color: #6b6b6b; text-decoration: none; }
header nav a:hover { color: #3d7c98; }

/* Articles */
article { margin-bottom: 48px; }
article .meta {
  color: #9a9a9a;
  font-size: 12px;
  font-family: 'Menlo', monospace;
  letter-spacing: 2px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
article h2 {
  font-size: 30px;
  color: #2d2d2d;
  margin-bottom: 20px;
  font-weight: normal;
  line-height: 1.3;
}
article h2 a { color: #2d2d2d; text-decoration: none; }
article h2 a:hover { color: #3d7c98; }
article h3 {
  font-size: 22px;
  color: #2d2d2d;
  margin: 36px 0 14px;
  font-weight: normal;
}
article p {
  margin-bottom: 22px;
  color: #2d2d2d;
  font-size: 18px;
}
article a { color: #3d7c98; text-decoration: none; }
article a:hover { text-decoration: underline; color: #2d6478; }
article strong { color: #1a1a1a; }
article em { color: #555; }
article code {
  background: #f0eeea;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 15px;
  color: #8b4049;
}
article hr {
  border: none;
  border-top: 1px solid #e2e0db;
  margin: 36px 0;
}
article ul {
  margin: 0 0 22px 24px;
  padding: 0;
}
article li {
  margin-bottom: 10px;
  color: #2d2d2d;
  font-size: 18px;
}
article blockquote {
  border-left: 3px solid #e2e0db;
  padding-left: 18px;
  margin: 22px 0;
  color: #555;
}

/* Tables — clean, data-forward */
article table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  font-size: 16px;
}
article th, article td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid #e2e0db;
}
article th {
  font-weight: normal;
  color: #9a9a9a;
  font-family: 'Menlo', monospace;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* Signoff */
.signoff {
  color: #6b6b6b;
  font-size: 16px;
  border-left: 3px solid #e2e0db;
  padding-left: 18px;
  font-style: italic;
}
.next-issue {
  background: #f0eeea;
  padding: 16px 20px;
  border-radius: 4px;
  font-size: 16px;
}

/* Subscribe — quiet, at the end */
.subscribe-quiet {
  border-top: 1px solid #e2e0db;
  padding: 28px 0;
  text-align: center;
  margin-top: 40px;
}
.subscribe-quiet p {
  color: #9a9a9a;
  font-size: 12px;
  font-family: 'Menlo', monospace;
  letter-spacing: 1px;
  margin-bottom: 14px;
}
.subscribe-quiet input[type="email"] {
  background: #fff;
  border: 1px solid #e2e0db;
  color: #2d2d2d;
  padding: 10px 14px;
  font-size: 15px;
  border-radius: 3px;
  width: 220px;
  font-family: 'Menlo', monospace;
}
.subscribe-quiet input:focus { border-color: #3d7c98; outline: none; }
.subscribe-quiet button {
  background: #2d2d2d;
  color: #f8f7f4;
  border: none;
  padding: 10px 18px;
  font-size: 13px;
  border-radius: 3px;
  cursor: pointer;
  font-family: 'Menlo', monospace;
  font-weight: bold;
  margin-left: 6px;
  letter-spacing: 1px;
}
.subscribe-quiet button:hover { background: #3d7c98; }

/* Sensor stamp — proof of presence */
.sensor-stamp {
  text-align: center;
  font-family: 'Menlo', monospace;
  font-size: 11px;
  color: #b0ada6;
  letter-spacing: 1px;
  padding: 20px 0 10px;
  margin-top: 30px;
}

/* Footer */
footer {
  text-align: center;
  color: #c0bdb6;
  font-size: 11px;
  padding: 20px 0;
  font-family: 'Menlo', monospace;
  letter-spacing: 1px;
}

/* Mobile — critical */
@media (max-width: 680px) {
  .container { padding: 28px 18px; }
  header h1 { font-size: 17px; letter-spacing: 3px; }
  .tagline { font-size: 15px; }
  article h2 { font-size: 26px; }
  article h3 { font-size: 20px; }
  article p, article li { font-size: 17px; }
  article code { font-size: 14px; }
  article table { font-size: 14px; }
  article th, article td { padding: 8px 10px; }
  .subscribe-quiet input[type="email"] { width: 100%; margin-bottom: 10px; }
  .subscribe-quiet button { margin-left: 0; width: 100%; }
}
@media (max-width: 400px) {
  .container { padding: 20px 14px; }
  header h1 { font-size: 15px; letter-spacing: 2px; }
  article h2 { font-size: 23px; }
  article p, article li { font-size: 16px; line-height: 1.8; }
}