/* VARIS Academy · vod-all 강의실 공용 스타일 (/class1/ /class4/ /class10/ /class22/ /class33/) */
:root{
  --bg:#121418;--bg2:#171a20;--card:#1e2229;--card2:#252a33;--line:#2f3540;--line2:#3a4250;
  --ink:#f3f1ec;--ink2:#d5d8de;--muted:#9aa1ad;--accent:#e9a23c;--accent2:#f4bd63;--accent-ink:#1d1206;
  --good:#7fd19b;--bad:#ef8a8a;--radius:16px;
  --sans:Pretendard,'Apple SD Gothic Neo','Malgun Gothic',system-ui,-apple-system,sans-serif
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);line-height:1.6;-webkit-font-smoothing:antialiased;word-break:keep-all;overflow-wrap:break-word}
a{color:inherit}
button,input{font:inherit}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
[hidden]{display:none!important}

/* header */
.top{border-bottom:1px solid var(--line);background:rgba(18,20,24,.92);position:sticky;top:0;z-index:20;backdrop-filter:blur(8px)}
.top-in{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;letter-spacing:.01em;text-decoration:none}.logo b{color:var(--accent)}
.top-link{font-size:14px;color:var(--muted);text-decoration:none}.top-link:hover{color:var(--ink)}

/* hero */
.hero{padding:44px 0 8px;background:radial-gradient(900px 260px at 15% 0,rgba(233,162,60,.10),transparent 70%)}
.eyebrow{color:var(--accent);font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}
.hero h1{font-size:clamp(30px,5vw,48px);line-height:1.12;letter-spacing:-.04em;margin:12px 0 10px}
.lead{color:var(--muted);font-size:16px;max-width:640px;margin:0}

/* course steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin:28px 0 0;counter-reset:s}
.step{display:flex;flex-direction:column;gap:2px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--bg2);text-decoration:none;transition:border-color .15s,background .15s;min-width:0}
.step:hover{border-color:var(--line2);background:var(--card)}
.step i{font-style:normal;font-size:11px;font-weight:800;color:var(--muted);letter-spacing:.08em}
.step span{font-size:13.5px;font-weight:700;line-height:1.35;color:var(--ink2)}
.step small{font-size:12px;color:var(--muted)}
.step.on{border-color:var(--accent);background:rgba(233,162,60,.08)}
.step.on i,.step.on small{color:var(--accent)}.step.on span{color:var(--ink)}

/* access: gate + buy */
.access{padding:28px 0 8px}
.access-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:18px;align-items:stretch}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:28px;display:flex;flex-direction:column}
.kicker{font-size:12px;font-weight:800;letter-spacing:.06em;color:var(--muted)}
.kicker.accent{color:var(--accent)}
.card h2{font-size:24px;line-height:1.3;letter-spacing:-.03em;margin:8px 0 6px}
.card h2 em{font-style:normal;color:var(--accent)}
.card-sub{color:var(--muted);font-size:14px;margin:0 0 6px}
.card label{display:block;color:var(--muted);font-size:13px;margin:14px 0 6px}
.card label span{color:#717886}
.card input[type=text],.card input[type=email],.card input[type=tel],.card input:not([type]){width:100%;height:48px;padding:0 14px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);transition:border-color .15s}
.card input:focus{outline:none;border-color:var(--accent)}
.card input.err{border-color:var(--bad)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:50px;padding:0 20px;border:0;border-radius:10px;background:var(--accent);color:var(--accent-ink);font-weight:800;font-size:15.5px;cursor:pointer;text-decoration:none;transition:filter .15s,transform .05s}
.btn:hover{filter:brightness(1.06)}.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.6;cursor:wait}
.gate .btn{width:100%;margin-top:18px;background:var(--ink);color:#15171c}
.btn-ghost{background:transparent;border:1px solid var(--line2);color:var(--ink2)}
.error{min-height:20px;color:var(--bad);font-size:13.5px;margin-top:10px}
.error.ok{color:var(--good)}
.link-btn{margin-top:auto;padding:14px 0 0;border:0;background:none;color:var(--muted);font-size:13px;text-align:left;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.link-btn:hover{color:var(--ink2)}
.swap{margin-top:10px;width:100%;height:44px;font-size:14px}

.buy{position:relative;border-color:rgba(233,162,60,.5);background:linear-gradient(165deg,rgba(233,162,60,.13),var(--card) 45%)}
.buy-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.badge{font-size:11.5px;font-weight:800;color:var(--accent-ink);background:var(--accent);border-radius:999px;padding:4px 10px}
.price{display:flex;align-items:flex-end;gap:14px;margin:10px 0 16px}
.price strong{font-size:40px;line-height:1;letter-spacing:-.04em}
.price strong small{font-size:20px;margin-left:2px}
.price span{color:var(--muted);font-size:13px;line-height:1.45}
.checks{list-style:none;margin:0 0 20px;padding:0;display:grid;gap:9px}
.checks li{position:relative;padding-left:26px;font-size:14.5px;color:var(--ink2)}
.checks li::before{content:"";position:absolute;left:0;top:4px;width:16px;height:16px;border-radius:50%;background:rgba(233,162,60,.18)}
.checks li::after{content:"";position:absolute;left:5px;top:7px;width:6px;height:9px;border:solid var(--accent);border-width:0 2px 2px 0;transform:rotate(45deg)}
.btn-buy{width:100%;height:54px;font-size:16.5px}
.pw-form{margin-top:4px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.agree{display:flex!important;gap:9px;align-items:flex-start;margin:16px 0 14px!important;font-size:12.5px!important;line-height:1.55}
.agree input{margin-top:3px;accent-color:var(--accent)}
.agree a{color:var(--muted)}
.pw-msg{min-height:20px;font-size:13.5px;margin-top:10px;color:var(--muted)}
.pw-msg.ok{color:var(--good)}.pw-msg.err{color:var(--bad)}
.fine{margin:14px 0 0;font-size:12px;color:var(--muted)}
.buy.flash{animation:flash 1.2s ease}
@keyframes flash{0%,100%{box-shadow:none}30%{box-shadow:0 0 0 3px rgba(233,162,60,.55)}}

/* lessons */
.lessons-sec{padding:40px 0 80px}
.sec-head{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.sec-head h2{font-size:22px;letter-spacing:-.03em;margin:0}
.sec-meta{color:var(--muted);font-size:14px}
.status{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:12px 16px;margin-bottom:22px;border:1px solid rgba(127,209,155,.35);background:rgba(127,209,155,.08);border-radius:12px;font-size:14px;color:var(--ink2)}
.status b{color:var(--good)}
.status .link-btn{margin:0 0 0 auto;padding:0}
.lessons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
body.entered .lessons{grid-template-columns:repeat(2,minmax(0,1fr))}
.lesson{background:var(--card);border:1px solid var(--line);border-radius:14px;overflow:hidden;display:flex;flex-direction:column}
.lesson-video{position:relative;aspect-ratio:16/9;background:#0d0f13}
.lesson-video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.lock{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;width:100%;border:0;cursor:pointer;color:var(--ink2);
  background:radial-gradient(circle at 50% 45%,rgba(233,162,60,.12),transparent 60%),repeating-linear-gradient(135deg,#13161b 0 14px,#111317 14px 28px)}
.lock:hover .lock-ico{background:var(--accent);color:var(--accent-ink)}
.lock-ico{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;background:rgba(233,162,60,.16);color:var(--accent);transition:background .15s,color .15s}
.lock-ico svg{width:22px;height:22px}
.lock-t{font-weight:800;font-size:14.5px}
.lock-s{font-size:12.5px;color:var(--muted)}
.lesson-body{padding:16px 18px 18px}
.lesson-no{font-size:12px;font-weight:800;color:var(--accent);letter-spacing:.04em}
.lesson-body h3{font-size:17px;line-height:1.4;letter-spacing:-.02em;margin:4px 0 6px}
.lesson-body p{color:var(--muted);font-size:14px;margin:0}
.lesson-body details{margin-top:10px;border-top:1px solid var(--line);padding-top:10px}
.lesson-body summary{cursor:pointer;font-size:13px;color:var(--ink2);list-style:none}
.lesson-body summary::-webkit-details-marker{display:none}
.lesson-body summary::after{content:" +";color:var(--accent)}
.lesson-body details[open] summary::after{content:" –"}
.meta{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:8px}
.meta b{display:block;font-size:12px;color:var(--ink2);margin-bottom:4px}
.meta ul{margin:0;padding-left:16px;color:var(--muted);font-size:12.5px;line-height:1.65}
body.entered .access,body.entered .sticky-buy{display:none!important}

/* mobile sticky buy */
.sticky-buy{display:none}
@media(max-width:860px){
  .access-grid{grid-template-columns:1fr}
  .steps{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;margin-left:-24px;margin-right:-24px;padding:0 24px 4px;scrollbar-width:none}
  .steps::-webkit-scrollbar{display:none}
  .step{flex:0 0 46%;scroll-snap-align:start}
  .lessons,body.entered .lessons{grid-template-columns:1fr}
}
@media(max-width:560px){
  .wrap{padding:0 16px}
  .steps{margin-left:-16px;margin-right:-16px;padding:0 16px 4px}
  .step{flex-basis:62%}
  .card{padding:22px 18px}
  .price strong{font-size:34px}
  .row2,.meta{grid-template-columns:1fr;gap:0}
  .sticky-buy{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 16px calc(10px + env(safe-area-inset-bottom));background:rgba(18,20,24,.96);border-top:1px solid var(--line);backdrop-filter:blur(8px)}
  .sticky-buy div{display:flex;flex-direction:column;line-height:1.25}
  .sticky-buy b{font-size:17px}.sticky-buy span{font-size:12px;color:var(--muted)}
  .sticky-buy .btn{height:44px;width:auto;font-size:15px}
  .sticky-buy.away{display:none}
  .lessons-sec{padding-bottom:110px}
}