:root{--cream:#FFF3DC;--navy:#26305C;--gold:#D9A21B;--ok:#2e7d4f;--bad:#b3392f;--card:#fffaf0;--line:#e7d5ac}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--cream);color:var(--navy);font:16px/1.6 "Malgun Gothic","Apple SD Gothic Neo","Noto Sans KR",system-ui,sans-serif;min-height:100vh;display:flex;flex-direction:column}
.top{display:flex;align-items:center;justify-content:space-between;background:var(--navy);color:var(--cream);padding:12px 16px}
.brand{background:none;border:0;color:var(--cream);font:inherit;font-size:17px;cursor:pointer;padding:0;text-decoration:none}
.brand b{color:var(--gold)}
.proto{font-size:11px;border:1px solid var(--gold);color:var(--gold);border-radius:10px;padding:0 8px}
main{flex:1;width:100%;max-width:560px;margin:0 auto;padding:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:16px;margin-bottom:14px}
h1{font-size:22px;margin:.2em 0 .4em}h2{font-size:17px;margin:1em 0 .3em}
.big{font-size:42px;font-weight:700;color:var(--navy);line-height:1.1}
.row{display:flex;gap:10px;flex-wrap:wrap}
.stat{flex:1;min-width:120px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px 12px}
.stat span{display:block;font-size:12px;opacity:.7}.stat b{font-size:24px}
.btn{display:block;width:100%;background:var(--navy);color:var(--cream);border:0;border-radius:12px;padding:14px;font:inherit;font-weight:700;text-align:center;text-decoration:none;cursor:pointer;margin-top:10px}
.btn.gold{background:var(--gold);color:var(--navy)}
.btn.ghost{background:transparent;color:var(--navy);border:2px solid var(--navy)}
.btn:disabled{opacity:.5}
.progress{height:8px;background:var(--line);border-radius:4px;overflow:hidden;margin-bottom:12px}
.progress i{display:block;height:100%;background:var(--gold)}
.tag{display:inline-block;font-size:12px;background:var(--navy);color:var(--cream);border-radius:10px;padding:0 10px;margin-bottom:8px}
.q{white-space:pre-wrap;font-size:17px;margin:6px 0 12px}
.opt{display:block;width:100%;text-align:left;background:#fff;border:2px solid var(--line);border-radius:12px;padding:12px;margin:8px 0;font:inherit;color:var(--navy);cursor:pointer}
.opt:disabled{cursor:default}
.opt.right{border-color:var(--ok);background:#e8f5ec}
.opt.wrong{border-color:var(--bad);background:#fbe9e7}
.fb{white-space:pre-wrap;font-size:15px}
.fb h3{font-size:15px;margin:.8em 0 .2em}
.good{color:var(--ok);font-weight:700}.bad{color:var(--bad);font-weight:700}
.bar{display:flex;align-items:center;gap:8px;font-size:13px;margin:6px 0}
.bar .n{flex:0 0 42%;line-height:1.3}.bar .t{flex:1;height:10px;background:var(--line);border-radius:5px;overflow:hidden}.bar .t i{display:block;height:100%;background:var(--gold)}.bar .p{flex:0 0 70px;text-align:right;white-space:nowrap;font-size:12px}
canvas{width:100%;height:auto;border-radius:12px;border:1px solid var(--line);background:#fff}
.small{font-size:12px;opacity:.8}
footer{text-align:center;padding:16px 16px calc(16px + env(safe-area-inset-bottom));border-top:1px solid var(--line);font-size:13px}
footer p{margin:2px 0}footer a,.doc a:not(.btn){color:var(--navy)}
.doc p{margin:.4em 0}
.note{border-left:4px solid var(--gold);padding-left:10px;margin:8px 0}
.skip{position:absolute;left:8px;top:-60px;background:var(--gold);color:var(--navy);padding:8px 12px;border-radius:8px;z-index:9;font-weight:700}.skip:focus{top:8px}
a:focus-visible,button:focus-visible{outline:3px solid #1a5fd0;outline-offset:2px}
main:focus{outline:none}
.more{width:100%;max-width:560px;margin:0 auto;padding:0 16px 16px}
.more h2{margin-top:.2em}.more a:not(.btn){color:var(--navy);font-weight:700}
.install{width:100%;max-width:560px;margin:12px auto 0;padding:0 16px}
.install .card{margin:0;display:flex;gap:8px;align-items:center;flex-wrap:wrap}.install p{margin:0;flex:1 1 200px;font-size:14px}
.install .btn{width:auto;margin:0;padding:8px 14px}
@media (max-width:400px){h1{font-size:20px}.big{font-size:36px}.bar .n{flex-basis:38%}.bar .p{flex-basis:64px}}