:root{
    --void:#140F26;
    --deep:#1C1536;
    --panel:#241C46;
    --line:#382C68;
    --line2:#4A3A86;
    --paper:#F3F0FF;
    --mute:#9A8FC8;
    --hot:#FF6A3D;
    --cool:#6EE7D2;
    --maxw:1160px;
    --mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,monospace;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{
    margin:0;background:var(--void);color:var(--paper);
    font-family:"Pretendard Variable",Pretendard,system-ui,sans-serif;
    font-size:16px;line-height:1.72;letter-spacing:-.012em;
    -webkit-font-smoothing:antialiased;overflow-x:hidden;
  }
  /* 앰비언트 그리드 — 편성표의 격자를 페이지 전체로 확장 */
  body::before{
    content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.5;
    background-image:linear-gradient(var(--line) 1px,transparent 1px),
                     linear-gradient(90deg,var(--line) 1px,transparent 1px);
    background-size:88px 88px;
    mask-image:radial-gradient(120% 70% at 50% 0,#000 0%,transparent 72%);
    -webkit-mask-image:radial-gradient(120% 70% at 50% 0,#000 0%,transparent 72%);
  }
  a{color:inherit;text-decoration:none}
  main,header,footer{position:relative;z-index:1}
  .wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
  .eyebrow{
    font:600 11px/1 var(--mono);letter-spacing:.2em;text-transform:uppercase;
    color:var(--mute);display:flex;align-items:center;gap:10px;margin-bottom:20px;
  }
  .eyebrow::before{content:"";width:22px;height:1px;background:var(--hot);flex:none}
  h2{
    font-size:clamp(28px,3.8vw,44px);line-height:1.2;letter-spacing:-.042em;
    font-weight:800;margin:0 0 18px;
  }
  p{margin:0 0 16px;color:#CCC2F0}
  :focus-visible{outline:2px solid var(--cool);outline-offset:3px;border-radius:4px}

  /* 스크롤 리빌 */
  .rv{opacity:0;transform:translateY(22px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.7,.3,1)}
  .rv.in{opacity:1;transform:none}

  /* ---------- 네비 ---------- */
  .nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(16px);
    background:rgba(20,15,38,.8);border-bottom:1px solid var(--line)}
  .nav .wrap{display:flex;align-items:center;gap:28px;height:64px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-.035em;font-size:16.5px}
  .brand i{width:11px;height:19px;border-radius:2px;background:var(--hot);display:block;
    font-style:normal;flex:none;box-shadow:0 0 22px rgba(255,106,61,.55)}
  .nav nav{display:flex;gap:24px;margin-left:auto;font-size:14px;color:var(--mute)}
  .nav nav a:hover{color:var(--paper)}
  .btn{display:inline-block;border-radius:7px;font-weight:700;font-size:14px;
    padding:11px 19px;border:1px solid transparent;cursor:pointer;
    transition:transform .14s ease,box-shadow .14s ease,background .14s ease}
  .btn:hover{transform:translateY(-2px)}
  .btn-hot{background:var(--hot);color:#220901;box-shadow:0 6px 26px -8px rgba(255,106,61,.75)}
  .btn-hot:hover{box-shadow:0 12px 34px -8px rgba(255,106,61,.85)}
  .btn-line{border-color:var(--line2);color:var(--paper)}
  .btn-line:hover{background:var(--panel)}
  .nav .btn{padding:9px 16px}
  @media(max-width:820px){.nav nav{display:none}}

  /* ---------- 히어로 ---------- */
  .hero{padding:88px 0 20px;position:relative}
  .hero::before{content:"";position:absolute;left:-15%;top:-30%;width:70%;height:120%;
    background:radial-gradient(closest-side,rgba(255,106,61,.20),transparent);pointer-events:none}
  .hero::after{content:"";position:absolute;right:-10%;top:10%;width:55%;height:90%;
    background:radial-gradient(closest-side,rgba(110,231,210,.13),transparent);pointer-events:none}
  .hero .wrap{position:relative}
  .hero h1{
    font-size:clamp(38px,7.2vw,78px);line-height:1.04;letter-spacing:-.055em;
    font-weight:800;margin:0 0 22px;max-width:15ch;
  }
  .hero h1 mark{background:none;color:var(--hot)}
  .hero h1 .rl{display:block;overflow:hidden}
  .hero h1 .rl span{display:block;animation:up .85s cubic-bezier(.2,.8,.25,1) both}
  .hero h1 .rl:nth-child(2) span{animation-delay:.1s}
  @keyframes up{from{transform:translateY(105%)}to{transform:none}}
  .lede{font-size:clamp(16px,1.9vw,19.5px);max-width:53ch;color:#CCC2F0}

  .form{display:flex;gap:10px;margin:32px 0 12px;max-width:580px;flex-wrap:wrap}
  .form input{flex:1 1 270px;background:rgba(28,21,54,.9);border:1px solid var(--line2);
    color:var(--paper);padding:15px 17px;border-radius:9px;font-size:15px;font-family:inherit}
  .form input::placeholder{color:#7466AD}
  .form input:focus{outline:2px solid var(--hot);outline-offset:0;border-color:transparent}
  .form .btn{padding:15px 24px;flex:none}
  .note{font:500 12px/1.6 var(--mono);color:var(--mute)}

  /* ---------- 시그니처: 주간 편성표 ---------- */
  .plan{margin:48px 0 0;border:1px solid var(--line2);border-radius:14px;
    background:linear-gradient(180deg,rgba(36,28,70,.9),rgba(20,15,38,.9));
    overflow:hidden;box-shadow:0 40px 90px -50px #000}
  .plan-top{display:flex;align-items:center;gap:12px;flex-wrap:wrap;
    padding:15px 20px;border-bottom:1px solid var(--line);
    font:600 12px/1 var(--mono);color:var(--mute);letter-spacing:.06em}
  .plan-top b{color:var(--paper);font-weight:700}
  .dot{width:7px;height:7px;border-radius:50%;background:var(--cool);flex:none;
    box-shadow:0 0 0 0 rgba(110,231,210,.6);animation:pulse 2.4s ease-out infinite}
  @keyframes pulse{70%{box-shadow:0 0 0 9px rgba(110,231,210,0)}100%{box-shadow:0 0 0 0 rgba(110,231,210,0)}}
  .days{display:grid;grid-template-columns:repeat(7,1fr);gap:1px;background:var(--line)}
  .day{background:rgba(20,15,38,.7);padding:15px 11px 17px;min-height:200px}
  .day>em{font:700 11px/1 var(--mono);letter-spacing:.14em;color:var(--mute);
    font-style:normal;display:block;margin-bottom:13px}
  .slot{aspect-ratio:9/16;border-radius:6px;border:1px dashed var(--line2);
    margin-bottom:8px;display:flex;flex-direction:column;justify-content:flex-end;
    padding:8px;font:600 9.5px/1.32 var(--mono);color:#6355A0;overflow:hidden}
  .slot .idx{font-size:9px;opacity:.75;margin-bottom:3px}
  .slot.on{border-style:solid;border-color:transparent;color:#160B2C;
    background:linear-gradient(158deg,var(--cool),#57C7EA);
    animation:pop .46s cubic-bezier(.2,.9,.3,1.5) both}
  .slot.on.hot{background:linear-gradient(158deg,var(--hot),#FFB271)}
  @keyframes pop{from{opacity:0;transform:translateY(-10px) scale(.88)}to{opacity:1;transform:none}}
  @media(prefers-reduced-motion:reduce){
    .slot.on,.hero h1 .rl span,.dot{animation:none}
    .rv{opacity:1;transform:none;transition:none}
    .btn:hover{transform:none}
    html{scroll-behavior:auto}
  }
  @media(max-width:900px){.days{grid-template-columns:repeat(4,1fr)}.day{min-height:auto}}
  @media(max-width:520px){.days{grid-template-columns:repeat(2,1fr)}}

  /* ---------- 지표 띠 ---------- */
  .strip{display:grid;grid-template-columns:repeat(auto-fit,minmax(155px,1fr));
    gap:1px;background:var(--line);border:1px solid var(--line);
    border-radius:14px;overflow:hidden;margin:60px 0 0}
  .strip div{background:rgba(28,21,54,.6);padding:22px 20px}
  .strip b{display:block;font-size:29px;font-weight:800;letter-spacing:-.04em;
    font-variant-numeric:tabular-nums;line-height:1.25}
  .strip span{font:500 12px/1.5 var(--mono);color:var(--mute)}

  .sec{padding:104px 0}
  .sec-head{max-width:64ch;margin-bottom:48px}

  /* ---------- 3단계 ---------- */
  .steps{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
    border:1px solid var(--line);border-radius:14px;overflow:hidden}
  .steps article{background:var(--deep);padding:32px 28px 36px;transition:background .2s ease}
  .steps article:hover{background:var(--panel)}
  .steps h3{font-size:19px;font-weight:700;letter-spacing:-.03em;margin:16px 0 10px}
  .steps p{font-size:14.5px;margin:0;color:#B8ACE4}
  .num{font:800 13px/1 var(--mono);color:#220901;background:var(--hot);
    display:inline-block;padding:8px 10px;border-radius:5px;letter-spacing:.04em}
  .steps article:nth-child(2) .num,.steps article:nth-child(3) .num{background:var(--cool);color:#0C2A26}
  @media(max-width:860px){.steps{grid-template-columns:1fr}}

  /* ---------- 기능 교차 ---------- */
  .feat{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;margin-bottom:104px}
  .feat:last-child{margin-bottom:0}
  .feat.flip .fig{order:-1}
  .feat h2{font-size:clamp(24px,3vw,34px)}
  .feat p{font-size:15.5px}
  .fig{border:1px solid var(--line2);border-radius:14px;background:var(--deep);
    padding:24px;font:500 12.5px/1.9 var(--mono);color:var(--mute);overflow:hidden;
    box-shadow:0 30px 70px -50px #000}
  .fig .row{display:flex;justify-content:space-between;gap:14px;padding:10px 0;
    border-bottom:1px solid var(--line)}
  .fig .row:last-child{border-bottom:0}
  .fig .row span:last-child{color:var(--paper);white-space:nowrap}
  .tag{display:inline-block;padding:2px 9px;border-radius:5px;font-size:11px;
    background:rgba(110,231,210,.14);color:var(--cool)}
  .tag.hot{background:rgba(255,106,61,.16);color:var(--hot)}
  .bars{display:flex;align-items:flex-end;gap:6px;height:118px;margin-top:12px}
  .bars i{flex:1;background:var(--line2);border-radius:4px 4px 0 0;display:block;
    height:0;transition:height .8s cubic-bezier(.2,.8,.3,1)}
  .bars i.me{background:var(--hot)}
  @media(max-width:860px){
    .feat{grid-template-columns:1fr;gap:30px;margin-bottom:72px}
    .feat.flip .fig{order:0}
  }

  /* ---------- 학습 루프 ---------- */
  .loop{border:1px solid var(--line2);border-radius:16px;overflow:hidden;background:var(--deep)}
  .loop-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:1px;background:var(--line)}
  .loop-cell{background:var(--deep);padding:30px 28px 34px}
  .hooks{display:grid;gap:12px;margin-top:6px}
  .hook{display:grid;grid-template-columns:88px 1fr 52px;align-items:center;gap:12px;
    font:600 12px/1.4 var(--mono)}
  .hook em{font-style:normal;color:var(--paper)}
  .hook .track{height:9px;background:var(--line);border-radius:5px;overflow:hidden}
  .hook .track i{display:block;height:100%;background:var(--line2);width:0;border-radius:5px;
    transition:width 1s cubic-bezier(.2,.8,.3,1)}
  .hook.win .track i{background:linear-gradient(90deg,var(--cool),#57C7EA)}
  .hook .val{text-align:right;color:var(--mute);font-variant-numeric:tabular-nums}
  .hook.win .val{color:var(--cool)}
  .mix{display:grid;gap:10px;margin-top:6px}
  .mixrow{display:flex;align-items:center;gap:12px;font:600 12px/1 var(--mono)}
  .mixrow b{width:62px;color:var(--mute);font-weight:600}
  .mixbar{flex:1;height:26px;display:flex;border-radius:6px;overflow:hidden;background:var(--line)}
  .mixbar i{display:block;height:100%;transition:width .9s cubic-bezier(.2,.8,.3,1);width:0}
  .mixbar .a{background:var(--cool)}
  .mixbar .b{background:var(--line2)}
  .mixbar .c{background:var(--hot);opacity:.85}
  .legend{display:flex;gap:16px;flex-wrap:wrap;font:500 11.5px/1 var(--mono);color:var(--mute);margin-top:16px}
  .legend span{display:flex;align-items:center;gap:6px}
  .legend i{width:9px;height:9px;border-radius:3px;display:block}
  .caveat{border-left:2px solid var(--hot);padding:2px 0 2px 16px;margin-top:26px;
    font-size:14.5px;color:#B8ACE4}
  @media(max-width:860px){.loop-grid{grid-template-columns:1fr}}

  /* ---------- 6카드 ---------- */
  .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);
    border:1px solid var(--line);border-radius:14px;overflow:hidden}
  .cards article{background:var(--deep);padding:30px 26px 32px;transition:background .2s ease}
  .cards article:hover{background:var(--panel)}
  .cards h3{font-size:17px;font-weight:700;margin:0 0 10px;letter-spacing:-.025em}
  .cards p{font-size:14px;margin:0;color:#B8ACE4}
  .glyph{width:32px;height:32px;border-radius:8px;display:grid;place-items:center;
    margin-bottom:17px;font:800 14px/1 var(--mono);
    background:rgba(110,231,210,.13);color:var(--cool)}
  @media(max-width:940px){.cards{grid-template-columns:1fr 1fr}}
  @media(max-width:620px){.cards{grid-template-columns:1fr}}

  /* ---------- 요금제 ---------- */
  .plans{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
  .plans article{border:1px solid var(--line);border-radius:14px;background:var(--deep);
    padding:28px 24px 30px;display:flex;flex-direction:column;position:relative}
  .plans article.pick{border-color:var(--hot);background:var(--panel);
    box-shadow:0 30px 70px -46px rgba(255,106,61,.9)}
  .plans article.pick::before{content:"가장 많이 씁니다";position:absolute;top:-10px;left:24px;
    background:var(--hot);color:#220901;font:700 10.5px/1 var(--mono);padding:6px 9px;border-radius:5px}
  .plans h3{font-size:15px;font-weight:700;margin:0 0 6px;letter-spacing:-.02em}
  .price{font-size:29px;font-weight:800;letter-spacing:-.04em;margin:8px 0 4px;
    font-variant-numeric:tabular-nums}
  .price small{font-size:13px;font-weight:600;color:var(--mute)}
  .plans ul{list-style:none;padding:0;margin:18px 0 24px;font-size:13.5px;color:#B8ACE4}
  .plans li{padding:5px 0 5px 18px;position:relative}
  .plans li::before{content:"";position:absolute;left:0;top:13px;width:7px;height:7px;
    border-radius:2px;background:var(--line2)}
  .plans .pick li::before{background:var(--hot)}
  .plans .btn{margin-top:auto;text-align:center}
  @media(max-width:1000px){.plans{grid-template-columns:1fr 1fr}}
  @media(max-width:580px){.plans{grid-template-columns:1fr}}

  /* ---------- FAQ ---------- */
  .faq{border-top:1px solid var(--line)}
  .faq details{border-bottom:1px solid var(--line)}
  .faq summary{cursor:pointer;list-style:none;padding:24px 44px 24px 0;position:relative;
    font-size:17px;font-weight:700;letter-spacing:-.025em}
  .faq summary::-webkit-details-marker{display:none}
  .faq summary::after{content:"+";position:absolute;right:6px;top:21px;color:var(--hot);
    font:400 23px/1 var(--mono)}
  .faq details[open] summary::after{content:"–"}
  .faq p{padding:0 0 26px;margin:0;font-size:15px;max-width:76ch}

  /* ---------- 마무리 ---------- */
  .end{border:1px solid var(--line2);border-radius:18px;padding:64px 40px;text-align:center;
    background:radial-gradient(closest-side at 50% 0,rgba(255,106,61,.2),transparent),var(--deep)}
  .end h2{margin-bottom:12px}
  .end p{max-width:48ch;margin:0 auto 28px}
  footer{border-top:1px solid var(--line);margin-top:100px;padding:36px 0 60px;
    font-size:13.5px;color:var(--mute)}
  footer .wrap{display:flex;gap:20px;flex-wrap:wrap;align-items:center}
  footer nav{display:flex;gap:20px;margin-left:auto}
  footer a:hover{color:var(--paper)}

  /* ---------- 히어로 배경 영상 ---------- */
  .hero{isolation:isolate}
  .hero-vid{
    position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
    z-index:-2;opacity:.17;filter:saturate(.5) contrast(1.05);
  }
  .hero-veil{
    position:absolute;inset:0;z-index:-1;pointer-events:none;
    background:
      linear-gradient(180deg,rgba(20,15,38,.55) 0%,rgba(20,15,38,.86) 62%,var(--void) 100%),
      linear-gradient(90deg,var(--void) 0%,rgba(20,15,38,.2) 55%,transparent 100%);
  }
  /* 영상 파일이 없어도 레이아웃이 무너지지 않는다 */
  .hero-vid:not([src]),.hero-vid[src=""]{display:none}

  /* ---------- 샘플 결과물 ---------- */
  .reels{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
  .reel{
    position:relative;aspect-ratio:9/16;border-radius:14px;overflow:hidden;
    border:1px solid var(--line2);background:var(--deep);
    box-shadow:0 40px 80px -54px #000;
  }
  .reel video,.reel .stub{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
  .reel .stub{
    display:flex;flex-direction:column;justify-content:space-between;padding:20px;
    background:linear-gradient(168deg,var(--panel),var(--void));
  }
  .reel .stub .hooktext{
    font-size:clamp(17px,2.1vw,23px);font-weight:800;letter-spacing:-.035em;line-height:1.25;
  }
  .reel .stub .cap{
    font:700 12px/1.5 var(--mono);color:#160B2C;background:var(--cool);
    align-self:flex-start;padding:5px 9px;border-radius:5px;
  }
  .reel .stub .cap.hot{background:var(--hot);color:#220901}
  .reel .meta{
    position:absolute;left:0;right:0;bottom:0;padding:12px 14px;z-index:2;
    display:flex;justify-content:space-between;gap:10px;
    font:600 11px/1 var(--mono);color:var(--paper);
    background:linear-gradient(180deg,transparent,rgba(11,7,24,.9));
  }
  .reel .meta span:last-child{color:var(--mute)}
  .reel-note{margin-top:20px}
  @media(max-width:820px){.reels{grid-template-columns:1fr 1fr}.reels .reel:nth-child(3){display:none}}
  @media(max-width:520px){.reels{grid-template-columns:1fr}.reels .reel:nth-child(2){display:none}}

  /* ---------- 언어 전환 ---------- */
  .lang{display:flex;align-items:center;gap:2px;border:1px solid var(--line2);
    border-radius:7px;overflow:hidden;font:700 12px/1 var(--mono);flex:none}
  .lang a{padding:8px 11px;color:var(--mute);transition:background .14s ease,color .14s ease}
  .lang a:hover{color:var(--paper);background:var(--panel)}
  .lang a[aria-current="true"]{background:var(--line2);color:var(--paper)}
  @media(max-width:520px){.nav .brand span{display:none}}

  /* ---------- 예정 기능 표기 ---------- */
  .soon{display:inline-block;margin-top:8px;padding:4px 9px;border-radius:5px;
    font:700 11px/1 var(--mono);background:rgba(255,106,61,.14);color:var(--hot);
    border:1px solid rgba(255,106,61,.3)}
  .plans li.soon-li{color:var(--mute)}
  .plans li.soon-li::before{background:transparent;border:1px solid var(--line2)}