:root{--bg:#0d1017;--panel:#151b25;--line:#263041;--text:#eef1f6;--sub:#aab4c3;--dim:#6f7a8c;--key:#fae100;--key-ink:#191600;--ok:#7ee08a;--bad:#ff7b72}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font-family:"Pretendard","Malgun Gothic","Apple SD Gothic Neo",system-ui,sans-serif;line-height:1.7;word-break:keep-all}
a{color:var(--key)}
.wrap{max-width:920px;margin:0 auto;padding:0 20px}
header.top{border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(13,16,23,.92);backdrop-filter:blur(8px);z-index:5}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;gap:12px}
.brand{font-weight:800;color:var(--text);text-decoration:none;font-size:17px}
.brand b{color:var(--key)}
nav a{color:var(--sub);text-decoration:none;margin-left:18px;font-size:15px;font-weight:600}
nav a:hover{color:var(--text)}
h1{font-size:clamp(30px,6vw,52px);line-height:1.25;margin:0 0 18px;font-weight:800;letter-spacing:-.5px}
h1 b{color:var(--key)}
h2{font-size:clamp(22px,4vw,30px);margin:56px 0 16px;font-weight:800}
h3{font-size:19px;margin:28px 0 8px}
p{margin:0 0 14px;color:var(--sub)}
p.lead{color:var(--text);font-size:18px}
.hero{padding:56px 0 8px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.tag{border:1px solid var(--line);border-radius:999px;padding:4px 14px;font-size:13px;font-weight:700;color:var(--sub)}
.btn{display:inline-block;background:var(--key);color:var(--key-ink);font-weight:800;border:0;border-radius:12px;padding:14px 26px;font-size:17px;text-decoration:none;cursor:pointer;font-family:inherit}
.btn:hover{filter:brightness(1.06)}
.btn.ghost{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn.small{padding:8px 14px;font-size:14px;border-radius:9px}
.btn[disabled]{opacity:.5;cursor:default}
.cta{display:flex;flex-wrap:wrap;gap:12px;align-items:center;margin:26px 0 8px}
.price{font-size:26px;font-weight:800}
.price small{font-size:14px;color:var(--dim);font-weight:600;margin-left:8px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:22px 24px;margin:14px 0}
video,img.shot{width:100%;border-radius:14px;border:1px solid var(--line);display:block;background:#000}
ol.steps,ul.plain{padding-left:22px;color:var(--sub)}
ol.steps li,ul.plain li{margin:6px 0}
.lessons{list-style:none;padding:0;margin:0}
.lessons li{display:flex;gap:14px;align-items:center;padding:13px 0;border-bottom:1px solid var(--line);color:var(--text)}
.lessons li:last-child{border-bottom:0}
.lessons .n{flex:none;width:34px;height:34px;border-radius:50%;background:#232c3a;color:var(--sub);display:flex;align-items:center;justify-content:center;font-weight:800;font-size:14px}
.lessons button{all:unset;cursor:pointer;display:flex;gap:14px;align-items:center;width:100%}
.lessons li.on .n{background:var(--key);color:var(--key-ink)}
.lessons li.on{font-weight:700}
label{display:block;font-weight:700;margin:16px 0 6px;font-size:15px}
input[type=text],input[type=email],input[type=password]{width:100%;background:#0a0d13;border:1px solid var(--line);border-radius:10px;padding:13px 14px;color:var(--text);font-size:16px;font-family:inherit}
input:focus{outline:2px solid var(--key);outline-offset:1px}
.check{display:flex;gap:10px;align-items:flex-start;margin:18px 0;color:var(--sub);font-size:15px}
.check input{margin-top:6px;width:18px;height:18px;flex:none}
.msg{margin:14px 0;font-weight:700}
.msg.bad{color:var(--bad)} .msg.ok{color:var(--ok)}
.code{font-family:Consolas,"D2Coding",monospace;font-size:clamp(24px,6vw,34px);font-weight:800;color:var(--key);letter-spacing:2px;word-break:break-all}
.kv{display:grid;grid-template-columns:110px 1fr;gap:6px 14px;margin:10px 0;color:var(--text)}
.kv span:nth-child(odd){color:var(--dim)}
.hide{display:none!important}
table{width:100%;border-collapse:collapse;font-size:14px}
th,td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}
th{color:var(--dim);font-weight:700}
.st{font-weight:800} .st.pending{color:var(--key)} .st.approved{color:var(--ok)} .st.rejected{color:var(--bad)}
.scroll{overflow-x:auto}
footer{border-top:1px solid var(--line);margin-top:72px;padding:28px 0 48px;color:var(--dim);font-size:13.5px}
footer a{color:var(--sub);margin-right:14px}
@media (max-width:560px){.brand{font-size:15px;white-space:nowrap}nav{white-space:nowrap}nav a{margin-left:12px;font-size:13.5px}nav a[href='/#curriculum']{display:none}.kv{grid-template-columns:90px 1fr}}