:root{font-family:-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;color:#121928;background:#eaf0fc;font-synthesis:none;-webkit-font-smoothing:antialiased}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%}
button{font:inherit;cursor:pointer}
button:focus-visible{outline:3px solid #285cff;outline-offset:3px}
[hidden]{display:none!important}
.app-frame{width:100%;max-width:480px;min-height:100dvh;margin:auto;background:radial-gradient(circle at 55% 50%,#fff 0,#f7f9ff 55%,#eef4ff 100%);box-shadow:0 20px 70px #61739d26;overflow:hidden}
.text-blue{color:#2869ed}
.q-icon{width:23px;height:23px;flex:none;display:inline-grid;place-items:center;border-radius:50%;color:white;font-size:13px;font-weight:900;font-family:Arial,sans-serif;box-shadow:0 3px 6px #1a55aa21}
.q-icon.blue{background:linear-gradient(145deg,#78a5ff,#2d6cf0)}
.web-icon{width:34px;height:34px;flex:none;border-radius:11px;display:grid;place-items:center;font-size:18px;font-weight:800}
.web-icon.red{background:#fff0ef;color:#f0564d}
.web-icon.teal{background:#e9f8f8;color:#13aab5}
.web-icon.amber{background:#fff4e9;color:#f59b27}
.web-icon.blue{background:#ebf1ff;color:#3273ed}
.home{min-height:100dvh;padding:48px 22px max(40px,env(safe-area-inset-bottom));background:#f6f9ff}
.home-header{display:flex;align-items:flex-start;gap:16px}
.brand-mark{width:56px;height:56px;flex:none;border-radius:17px;background:linear-gradient(145deg,#54a1ff,#285ce3);color:#fff;display:grid;place-items:center;font-size:22px;box-shadow:0 10px 16px #2d67e63b;position:relative}
.brand-mark span{position:absolute;right:4px;bottom:3px;color:#ffd13a;font-size:12px}
.home-kicker{font-size:11px;font-weight:800;color:#4476cf}
.home h1{font-size:28px;line-height:1.27;letter-spacing:-.06em;margin:3px 0 0}
.home-intro{font-size:13px;line-height:1.6;color:#66758f;margin:19px 0}
.sample-banner{display:flex;align-items:center;gap:8px;padding:11px 12px;border:1px solid #d6e4ff;border-radius:12px;background:#edf4ff;color:#647697;font-size:11px;line-height:1.45}
.sample-banner span{background:#3375ef;color:white;border-radius:6px;padding:3px 6px;font-weight:800;white-space:nowrap}
.home-section{margin-top:25px;background:white;border:1px solid #e5ecf8;border-radius:21px;padding:15px;box-shadow:0 8px 20px #56719f0d}
.section-title{display:flex;align-items:center;gap:9px;margin-bottom:13px}
.section-title h2{margin:0;font-size:15px;letter-spacing:-.04em}
.section-icon{width:28px;height:28px;border-radius:9px;display:grid;place-items:center;font-size:13px}
.section-icon.video{color:#ed5a53;background:#fff0ee}
.section-icon.site{color:#248d6a;background:#e8f8f2}
.video-library-heading{margin:25px 0 12px}
.video-card{margin-top:9px;padding:10px;border-radius:16px}
.video-list-row{display:grid;grid-template-columns:88px minmax(0,1fr) 17px;align-items:center;gap:10px;min-height:70px;list-style:none;cursor:pointer}
.video-list-row::-webkit-details-marker{display:none}
.video-list-row::marker{content:""}
.video-list-row:focus-visible{outline:3px solid #397bfd;outline-offset:3px;border-radius:9px}
.video-thumbnail{width:88px;height:66px;object-fit:cover;border-radius:9px;background:#dce4f1;display:block}
.video-list-text{min-width:0}
.video-index{display:block;color:#4476cf;font-size:10px;font-weight:800;margin-bottom:3px}
.video-title{display:block;color:#1c2a43;font-size:13px;font-weight:800;line-height:1.35;letter-spacing:-.04em;word-break:keep-all}
.video-source{display:block;margin-top:4px;color:#8a97aa;font-size:10px;line-height:1.35}
.video-chevron{color:#7486a6;font-size:20px;line-height:1;text-align:center;transition:transform .2s}
.video-disclosure[open] .video-chevron{transform:rotate(180deg)}
.video-detail{border-top:1px solid #eef1f6;margin-top:10px;padding-top:11px}
.video-watch{display:inline-flex;align-items:center;min-height:36px;margin:0 0 9px;padding:0 12px;border-radius:9px;background:#edf4ff;color:#2765d5;font-size:12px;font-weight:800;text-decoration:none}
.video-watch:hover{background:#e0ecff}
.home-question-card{border-top:1px solid #eef1f6;padding:9px 0 12px}
.home-question{display:flex;align-items:center;gap:7px;min-height:44px;padding:2px 1px;color:#1c2a43;text-decoration:none;font-size:12px;line-height:1.4;letter-spacing:-.04em}
.home-question:hover{background:#f7faff}
.home-question-text{flex:1;font-weight:700}
.home-question time{color:#3574ea;font-weight:700;white-space:nowrap}
.home-question .q-icon{width:19px;height:19px;font-size:11px}
.question-summary{margin:3px 3px 0 27px;color:#47566e;font-size:12.5px;line-height:1.6;letter-spacing:-.025em;word-break:keep-all}
.question-arrow{color:#9aabc6;font-size:14px}
.sample-note{font-size:11px;color:#8693a8;margin:-4px 0 12px}
.home-web-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.home-web-grid div{min-height:50px;padding:7px;background:#f8faff;border:1px solid #eef2fa;border-radius:11px;display:flex;align-items:center;gap:7px}
.home-web-grid .web-icon{width:28px;height:28px;border-radius:8px;font-size:15px}
.home-web-grid strong{font-size:11px;letter-spacing:-.04em}
@media(min-width:600px){body{padding:24px}
.app-frame{min-height:calc(100dvh - 48px);border-radius:28px}
}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important}
}