:root { color-scheme: dark; font-family: Inter, ui-sans-serif, system-ui, sans-serif; color: #e8ebf3; background: #0d1017; }
* { box-sizing: border-box; }
body { margin: 0; }
main { max-width: 780px; margin: 0 auto; padding: 64px 24px 40px; }
.eyebrow { color: #9faffb; font-size: .78rem; font-weight: 650; letter-spacing: .16em; }
h1 { font-size: clamp(2.5rem, 7vw, 4.2rem); line-height: 1.05; letter-spacing: -.035em; margin: 22px 0; }
.intro { max-width: 610px; color: #a8b1c5; font-size: 1.1rem; line-height: 1.65; }
section { background: #171c28; border: 1px solid #2a3244; border-radius: 16px; padding: 24px; margin-top: 24px; }
.section-heading { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
h2 { font-size: 1.05rem; margin: 0; }
.badge { border: 1px solid #46516e; color: #b8c4ea; border-radius: 20px; padding: 5px 10px; font-size: .78rem; }
dl { display: grid; grid-template-columns: 150px 1fr; gap: 15px; margin: 26px 0; }
dt { color: #96a1b8; font-size: .88rem; }
dd { margin: 0; overflow-wrap: anywhere; font-family: ui-monospace, monospace; font-size: .86rem; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; }
button { background: #b7c7ff; border: 1px solid transparent; border-radius: 8px; color: #13192a; cursor: pointer; padding: 11px 15px; font: inherit; font-size: .86rem; font-weight: 650; }
button.secondary { background: transparent; border-color: #414d68; color: #c4cce0; }
button:disabled { opacity: .4; cursor: default; }
button:focus-visible, a:focus-visible { outline: 3px solid #dbe4ff; outline-offset: 4px; }
ul { margin: 18px 0; padding: 0; list-style: none; }
li { display: flex; justify-content: space-between; gap: 10px; padding: 14px 0; border-bottom: 1px solid #2a3244; font-size: .9rem; }
li span:last-child { color: #b4bcd0; }
.hint, footer p { color: #8f9ab2; line-height: 1.6; font-size: .84rem; }
#feedback { min-height: 2.5em; color: #c3cdeb; font-size: .9rem; line-height: 1.65; margin-top: 24px; overflow-wrap: anywhere; }
footer { border-top: 1px solid #252d40; padding-top: 24px; margin-top: 12px; }
a { color: #b7c7ff; text-underline-offset: 4px; }
@media (max-width: 520px) { main { padding-top: 32px; } section { padding: 18px; } dl { grid-template-columns: 1fr; gap: 8px; } dd { margin-bottom: 10px; } .section-heading { align-items: flex-start; } }