.rtwrap{
    --rt-bg:var(--szc-bg);
    --rt-card:var(--szc-bg2);
    --rt-line:var(--szc-border);
    --rt-text:var(--szc-ink);
    --rt-muted:var(--szc-muted);
    --rt-primary:var(--szc-accent);
    --rt-primary-2:var(--szc-accent-hi);
    --rt-ok-bg:var(--szc-ok-bg);
    --rt-ok-line:var(--szc-ok-line);
    --rt-ok-text:var(--szc-ok);
    --rt-warn-bg:var(--szc-warn-bg);
    --rt-warn-line:var(--szc-warn-line);
    --rt-warn-text:var(--szc-warn);
    --rt-cta-bg:rgba(var(--szc-accent-rgb),.07);
    --rt-cta-line:rgba(var(--szc-accent-rgb),.28);
    --rt-bad-bg:var(--szc-bad-bg);
    --rt-bad-line:var(--szc-bad-line);
    --rt-bad-text:var(--szc-bad);
    --rt-shadow:0 8px 26px rgba(16,24,40,.06);
    color:var(--rt-text);
    background:var(--rt-bg);
    border:1px solid var(--rt-line);
    border-radius:20px;
    padding:22px;
    max-width:980px;
    margin:28px auto;
    box-shadow:var(--rt-shadow);
    font-family:'Inter',system-ui,sans-serif;
  }

  .rttitle{
    margin:0;
    font-size:clamp(28px,4vw,38px);
    line-height:1.1;
    letter-spacing:-.02em;
  }

  .rtlead{
    margin:14px 0 0;
    font-size:17px;
    color:var(--rt-muted);
    max-width:760px;
  }

  .rtcallout{
    margin-top:14px;
    border:1px solid var(--rt-line);
    background:var(--szc-bg2);
    border-radius:14px;
    padding:14px 16px;
    color:var(--szc-ink2);
  }

  .rtcallout--ok{
    background:var(--rt-ok-bg);
    border-color:var(--rt-ok-line);
    color:var(--rt-ok-text);
  }

  .rtcallout--warn{
    background:var(--rt-warn-bg);
    border-color:var(--rt-warn-line);
    color:var(--rt-warn-text);
  }

  .rtcallout--cta{
    background:var(--rt-cta-bg);
    border-color:var(--rt-cta-line);
  }

  .rtcallout--soft{
    background:var(--szc-bg3);
  }

  .rtcard{
    margin-top:18px;
    border:1px solid var(--rt-line);
    background:var(--rt-card);
    border-radius:18px;
    padding:18px;
    box-shadow:var(--rt-shadow);
  }

  .rtcard__head{
    margin-bottom:12px;
  }

  .rtcard__title{
    margin:0;
    font-size:24px;
    line-height:1.2;
  }

  .rtcard__sub{
    margin:8px 0 0;
    color:var(--rt-muted);
    font-size:15px;
  }

  .rtintro{
    display:grid;
    gap:18px;
  }

  .rtintro__hero{
    display:grid;
    grid-template-columns:1fr;
    gap:18px;
    align-items:stretch;
  }

  .rtintro__main,
  .rtsetup{
    border:1px solid var(--rt-line);
    background:var(--rt-card);
    border-radius:18px;
    box-shadow:var(--rt-shadow);
  }

  .rtintro__main{
    padding:22px;
  }

  .rtintro__eyebrow{
    display:inline-flex;
    align-items:center;
    gap:8px;
    font-size:12px;
    font-weight:800;
    letter-spacing:.08em;
    text-transform:uppercase;
    color:var(--rt-primary-2);
    background:rgba(var(--szc-accent-rgb),.08);
    border:1px solid rgba(var(--szc-accent-rgb),.16);
    border-radius:999px;
    padding:8px 12px;
    margin-bottom:12px;
  }

  .rtintro__main .rttitle{
    margin-bottom:12px;
  }

  .rtintro__main .rtlead{
    margin:0;
    max-width:none;
    font-size:17px;
    line-height:1.65;
  }

  .rtintro__main .rtcallout{
    margin-top:16px;
  }

  .rtsetup{
    padding:18px;
  }

  .rtsetup__top{
    display:flex;
    justify-content:space-between;
    align-items:flex-start;
    gap:16px;
    margin-bottom:14px;
  }

  .rtsetup__title{
    margin:0;
    font-size:22px;
    line-height:1.2;
  }

  .rtsetup__sub{
    margin:8px 0 0;
    font-size:14px;
    color:var(--rt-muted);
  }

  .rtsetup__grid{
    display:grid;
    grid-template-columns:minmax(260px,.9fr) minmax(0,1.1fr);
    gap:16px;
    align-items:start;
  }

  .rtsetup__left{
    display:grid;
    gap:14px;
  }

  .rtsetup__right{
    min-width:0;
  }

  .rtsteps{
    display:grid;
    gap:10px;
    margin-top:14px;
  }

  .rtsteps--compact{
    grid-template-columns:repeat(2,minmax(0,1fr));
    gap:10px;
    margin-top:0;
  }

  .rtstep{
    display:grid;
    grid-template-columns:44px 1fr;
    gap:12px;
    align-items:start;
    border:1px solid var(--rt-line);
    background:var(--szc-bg2);
    border-radius:14px;
    padding:12px;
  }

  .rtsteps--compact .rtstep{
    height:100%;
    padding:12px;
    grid-template-columns:38px 1fr;
    gap:10px;
  }

  .rtstep__num{
    width:44px;
    height:44px;
    border-radius:12px;
    display:grid;
    place-items:center;
    font-weight:700;
    background:rgba(var(--szc-accent-rgb),.08);
    color:var(--rt-primary-2);
    border:1px solid rgba(var(--szc-accent-rgb),.16);
  }

  .rtsteps--compact .rtstep__num{
    width:38px;
    height:38px;
    border-radius:10px;
    font-size:14px;
  }

  .rtstep__title{
    font-weight:700;
    margin-bottom:4px;
  }

  .rtsteps--compact .rtstep__title{
    font-size:14px;
    line-height:1.3;
  }

  .rtstep__desc{
    color:var(--rt-muted);
    font-size:14px;
  }

  .rtsteps--compact .rtstep__desc{
    font-size:13px;
    line-height:1.45;
  }

  .rtactions{
    margin-top:16px;
    display:flex;
    gap:10px;
    flex-wrap:wrap;
    align-items:center;
  }

  .rtsetup__actions{
    margin-top:16px;
    padding-top:16px;
    border-top:1px solid var(--rt-line);
    justify-content:flex-start;
  }

  .rtbtn{
    appearance:none;
    border:1px solid var(--rt-line);
    background:var(--szc-bg2);
    color:var(--szc-ink);
    border-radius:12px;
    padding:12px 16px;
    cursor:pointer;
    font-weight:700;
    font-size:15px;
    transition:.18s ease;
    text-decoration:none;
    display:inline-flex;
    align-items:center;
    justify-content:center;
  }

  .rtbtn:hover{
    transform:translateY(-1px);
  }

  .rtbtn--primary{
    background:var(--rt-primary);
    border-color:var(--rt-primary);
    color:var(--szc-bg2);
  }

  .rtbtn--primary:hover{
    background:var(--rt-primary-2);
    border-color:var(--rt-primary-2);
  }

  .rtbtn--ghost{
    background:var(--szc-bg2);
  }

  .rtbtn[disabled]{
    opacity:.6;
    cursor:not-allowed;
    transform:none;
  }

  .rttimer{
    display:inline-flex;
    align-items:center;
    gap:10px;
    border:1px solid var(--rt-line);
    background:var(--szc-bg2);
    border-radius:12px;
    padding:10px 14px;
    min-width:120px;
    margin-left:auto;
  }

  .rttimer__label{
    font-size:13px;
    color:var(--rt-muted);
    font-weight:700;
  }

  .rttimer__value{
    font-size:18px;
    font-weight:800;
    letter-spacing:.03em;
  }

  .rtmeta{
    display:grid;
    gap:8px;
    margin-top:16px;
  }

  .rtmeta--compact{
    margin-top:0;
    border:1px solid var(--rt-line);
    border-radius:14px;
    background:var(--szc-bg3);
    padding:14px 16px;
  }

  .rtmeta__item{
    font-size:14px;
  }

  .rtmeta__label{
    color:var(--rt-muted);
    margin-right:6px;
  }

  .rtmeta__muted{
    color:var(--rt-muted);
  }

  .rtsticky{
    position:sticky;
    top:10px;
    z-index:10;
    margin-top:18px;
    border:1px solid var(--rt-line);
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);
    border-radius:16px;
    padding:12px 14px;
    display:flex;
    justify-content:space-between;
    gap:14px;
    align-items:center;
    box-shadow:var(--rt-shadow);
  }

  .rtsticky__left{
    display:flex;
    gap:10px;
    align-items:center;
    flex-wrap:wrap;
  }

  .rtsticky__pill{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    height:28px;
    padding:0 10px;
    border-radius:999px;
    background:rgba(var(--szc-accent-rgb),.08);
    color:var(--rt-primary-2);
    font-size:12px;
    font-weight:700;
    border:1px solid rgba(var(--szc-accent-rgb),.16);
  }

  .rtsticky__text{
    color:var(--szc-ink2);
    font-size:14px;
  }

  .rtsticky__right{
    display:flex;
    align-items:center;
    gap:10px;
    white-space:nowrap;
  }

  .rtsticky__time,
  .rtsticky__speed{
    font-weight:800;
    font-size:15px;
  }

  .rtsticky__sep{
    width:1px;
    height:16px;
    background:var(--rt-line);
  }

  .rtprogress{
    margin-top:16px;
    border:1px solid var(--rt-line);
    background:var(--szc-bg2);
    border-radius:14px;
    overflow:hidden;
  }

  .rtprogress__bar{
    height:10px;
    width:0%;
    background:linear-gradient(90deg,var(--rt-primary),rgba(var(--szc-accent-rgb),.55));
    transition:width .2s ease;
  }

  .rtprogress__text{
    padding:10px 14px;
    color:var(--rt-muted);
    font-size:14px;
  }

  .rtreading{
    margin-top:18px;
  }

  .rttext{
    font-size:18px;
    line-height:1.85;
    color:var(--szc-ink);
  }

  .rttext p{
    margin:0 0 18px;
  }

  .rttext__h{
    margin:0 0 18px;
    font-size:24px;
    line-height:1.3;
  }

  .rttext__end{
    margin-top:10px;
    padding:14px 16px;
    border-radius:14px;
    border:1px solid var(--rt-line);
    background:var(--szc-bg3);
    color:var(--szc-ink2);
    font-size:15px;
  }

  .rtresult{
    display:grid;
    gap:8px;
    margin-top:8px;
  }

  .rtresult__big{
    font-size:40px;
    line-height:1;
    font-weight:800;
    letter-spacing:-.03em;
  }

  .rtresult__small{
    color:var(--szc-ink2);
    font-size:15px;
  }

  .rtquiz{
    display:grid;
    gap:14px;
  }

  .rtq{
    margin:0;
    padding:16px;
    border:1px solid var(--rt-line);
    border-radius:14px;
    background:var(--szc-bg2);
    transition:.18s ease;
  }

  .rtq__title{
    font-weight:700;
    margin-bottom:12px;
    line-height:1.5;
  }

  .rtopt{
    display:block;
    margin:8px 0;
    cursor:pointer;
    color:var(--szc-ink2);
    padding:10px 12px;
    border-radius:12px;
    border:1px solid transparent;
    transition:.16s ease;
  }

  .rtopt:hover{
    background:var(--szc-bg3);
    border-color:rgba(var(--szc-accent-rgb),.16);
  }

  .rtopt input{
    margin-right:10px;
  }

  .rtopt.is-selected{
    background:rgba(var(--szc-accent-rgb),.08);
    border-color:rgba(var(--szc-accent-rgb),.30);
    color:var(--szc-accent-hi);
  }

  .rtopt.is-correct{
    background:var(--rt-ok-bg);
    border-color:var(--rt-ok-line);
    color:var(--rt-ok-text);
  }

  .rtopt.is-incorrect{
    background:var(--rt-bad-bg);
    border-color:var(--rt-bad-line);
    color:var(--rt-bad-text);
  }

  .rtquiz__actions{
    display:flex;
    gap:10px;
    flex-wrap:wrap;
    margin-top:4px;
  }

  .rtgrid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
    gap:14px;
  }

  .rtstat{
    border:1px solid var(--rt-line);
    background:var(--szc-bg2);
    border-radius:16px;
    padding:18px;
  }

  .rtstat__label{
    color:var(--rt-muted);
    font-size:14px;
    margin-bottom:6px;
  }

  .rtstat__value{
    font-size:36px;
    line-height:1;
    font-weight:800;
    letter-spacing:-.03em;
  }

  .rtstat__meta{
    margin-top:8px;
    color:var(--szc-ink2);
    font-size:14px;
  }

  .rtpanel{
    border:1px solid var(--rt-line);
    background:var(--szc-bg2);
    border-radius:16px;
    padding:16px;
  }

  .rtpanel__title{
    margin:0;
    font-size:18px;
  }

  .rtselectwrap{
    display:block;
  }

  .rtselectlabel{
    display:block;
    margin-bottom:8px;
    font-weight:700;
    color:var(--szc-ink2);
  }

  .rtselect{
    width:100%;
    padding:12px 14px;
    border:1px solid var(--rt-line);
    border-radius:12px;
    background:var(--szc-bg2);
    font-size:15px;
    color:var(--szc-ink);
  }

  .rtq__feedback{
    margin-top:12px;
    padding:10px 12px;
    border-radius:12px;
    font-size:14px;
    line-height:1.5;
    border:1px solid var(--rt-line);
    background:var(--szc-bg3);
    color:var(--szc-ink2);
  }

  .rtq__feedback--ok{
    background:var(--rt-ok-bg);
    border-color:var(--rt-ok-line);
    color:var(--rt-ok-text);
  }

  .rtq__feedback--bad{
    background:var(--rt-bad-bg);
    border-color:var(--rt-bad-line);
    color:var(--rt-bad-text);
  }

  .rthidden{
    position:absolute !important;
    width:1px !important;
    height:1px !important;
    padding:0 !important;
    margin:-1px !important;
    overflow:hidden !important;
    clip:rect(0,0,0,0) !important;
    white-space:nowrap !important;
    border:0 !important;
  }

  .rtfinalcta__title{
    font-size:20px;
    font-weight:800;
    line-height:1.2;
    margin-bottom:8px;
    color:var(--rt-text);
  }

  .rtfinalcta__text{
    color:var(--szc-ink2);
    line-height:1.6;
  }

  .rtfinalcta__actions{
    display:flex;
    gap:10px;
    flex-wrap:wrap;
    margin-top:14px;
  }

  .rtflash{
    animation:rtflash 0.9s ease;
  }

  .rtpulse{
    animation:rtpulse 0.3s ease;
  }

  @keyframes rtflash{
    0%{ box-shadow:0 0 0 0 rgba(var(--szc-accent-rgb),.35); }
    100%{ box-shadow:0 0 0 18px rgba(var(--szc-accent-rgb),0); }
  }

  @keyframes rtpulse{
    0%{ transform:scale(1); }
    50%{ transform:scale(1.01); }
    100%{ transform:scale(1); }
  }

  @media (max-width: 920px){
    .rtsetup__grid{
      grid-template-columns:1fr;
    }

    .rtsteps--compact{
      grid-template-columns:1fr 1fr;
    }
  }

  @media (max-width: 680px){
    .rtwrap{
      padding:16px;
      border-radius:16px;
    }

    .rttitle{
      font-size:28px;
    }

    .rtintro__main,
    .rtsetup{
      padding:16px;
    }

    .rtsetup__title{
      font-size:20px;
    }

    .rttext{
      font-size:17px;
      line-height:1.8;
    }

    .rtsticky{
      top:6px;
      padding:10px 12px;
    }

    .rtstat__value,
    .rtresult__big{
      font-size:30px;
    }

    .rtsteps--compact{
      grid-template-columns:1fr;
    }

    .rtsetup__actions{
      align-items:stretch;
    }

    .rtsetup__actions .rtbtn{
      width:100%;
      justify-content:center;
    }

    .rttimer{
      margin-left:0;
      width:100%;
      justify-content:space-between;
    }

    .rtfinalcta__actions{
      flex-direction:column;
    }

    .rtfinalcta__actions .rtbtn{
      width:100%;
    }
  }