:root{color-scheme:dark}
*{box-sizing:border-box}
body{margin:0;background:#0b0b0f;color:#ededf0;font:16px/1.7 "IBM Plex Sans KR",system-ui,sans-serif}
a{color:#8be6d2}
header,main,footer{max-width:760px;margin:0 auto;padding:0 20px}
header{display:flex;flex-wrap:wrap;gap:8px 18px;align-items:center;padding-top:20px;padding-bottom:12px;border-bottom:1px solid #26262e}
header .brand{font-weight:700;color:#ededf0;text-decoration:none;margin-right:auto}
h1{font-size:28px;line-height:1.35;margin:28px 0 12px}
h2{font-size:20px;margin:32px 0 10px}
.answer{background:#10251f;border:1px solid #1f3d34;border-radius:12px;padding:16px 18px;margin:0 0 8px}
ol,ul{padding-left:22px}
li{margin:8px 0}
.cta{margin:36px 0;padding:22px;border:1px solid #26262e;border-radius:14px;background:#16161c}
.btn{display:inline-block;margin-top:8px;padding:12px 22px;border-radius:999px;background:#4fd1b5;color:#062019;font-weight:600;text-decoration:none}
.note,.src,.disclosure,footer{color:#a3a3ae;font-size:14px}
.src li{margin:4px 0}
.cards{list-style:none;padding:0}
.cards li{border:1px solid #26262e;border-radius:12px;padding:14px 16px;background:#16161c}
.cards a{font-weight:600}
footer{padding-top:24px;padding-bottom:40px;border-top:1px solid #26262e;margin-top:40px;text-align:center}
footer nav{display:flex;flex-wrap:wrap;justify-content:center;gap:4px 18px}
.walkthrough video { width: 100%; max-width: 960px; height: auto; border-radius: 10px; background: #000; }