:root { --night: #0b1f1a; --night-2: #123128; --mint: #4fd1a5; --sun: #f29a5e; --ink: #eef5f1; --ink-2: #a9bdb4; }
* { box-sizing: border-box; }
body { margin: 0; font-family: "IBM Plex Sans Thai", system-ui, sans-serif; color: var(--ink); background: var(--night); line-height: 1.75; }
a { color: var(--mint); }
header { display: flex; justify-content: space-between; align-items: center; padding: 20px clamp(20px, 5vw, 56px); border-bottom: 1px solid rgba(238,245,241,.08); }
header a { text-decoration: none; }
.brand { color: var(--ink); font-weight: 700; font-size: 19px; }
main { max-width: 760px; margin: 0 auto; padding: 40px 22px 60px; }
h1 { font-size: clamp(30px, 5vw, 42px); margin: 0 0 4px; line-height: 1.2; }
h2 { font-size: 20px; margin: 34px 0 8px; color: var(--sun); }
p, li { color: #d5e3dc; }
.muted { color: var(--ink-2); margin-top: 0; }
ul, ol { padding-left: 22px; }
hr { border: 0; border-top: 1px solid rgba(238,245,241,.12); margin: 44px 0 10px; }
footer { text-align: center; padding: 0 20px 26px; color: rgba(169,189,180,.6); font-size: 13px; }
footer a { color: inherit; }