:root{
    --bg-main:#07131c;
    --bg-surface:#0f1b29;
    --bg-surface-elevated:#132437;
    --cyan-primary:#4feef1;
    --cyan-bright:#84fbf6;
    --cyan-neon:#79f4f0;
    --cyan-glow:rgba(79,238,241,0.28);
    --text-primary:#eefaff;
    --text-muted:#a8b7c0;
    --text-dim:#718794;
    --logo-max:#f4fbff;
    --logo-lab:#70eef0;
    --logo-tagline:#86a6b2;
    --border-subtle:rgba(79,238,241,0.16);
    --border-medium:rgba(79,238,241,0.32);
    --border-active:rgba(79,238,241,0.65);

    --paper:#07131c;
    --ink:#eefaff;
    --ink-soft:#a8b7c0;
    --rule:rgba(79,238,241,0.16);
    --accent:#4feef1;
    --accent-soft:rgba(79,238,241,0.12);
    --correct:#5ee4a8;
    --correct-bg:rgba(94,228,168,0.15);
    --wrong:#ff6e85;
    --wrong-bg:rgba(255,110,133,0.15);
    --stamp:#ffd36f;
    --panel-bg:#0f1b29;

    --brand-green:#4feef1;
    --brand-gold:#84fbf6;
    --brand-paper:#07131c;
    --brand-ink:#eefaff;
    --brand-grey:#a8b7c0;

    --font-heading:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
    --font-body:'Inter',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  }
  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  html,body{margin:0;padding:0;}
  body{
    background:var(--bg-main);
    color:var(--text-primary);
    font-family:var(--font-body);
    min-height:100vh;
  }
  button{ font-family:inherit; }

  /* ============================================================
     PERSISTENT SITE HEADER
     ============================================================ */
  .site-header{
    position:sticky;
    top:0;
    z-index:100;
    background:rgba(7,19,28,0.88);
    backdrop-filter:blur(16px);
    -webkit-backdrop-filter:blur(16px);
    border-bottom:1px solid var(--border-subtle);
    padding:14px 24px 12px;
  }
  .brand-row{
    display:flex;
    align-items:center;
    gap:10px;
    max-width:1440px;
    margin:0 auto;
  }
  .brand-logo{
    width:30px; height:30px;
    color:var(--accent);
    flex-shrink:0;
  }
  /* ---- Full brand lockup (Concept 1): icon + "MAX EXAM LAB" wordmark ---- */
  .brand-icon{
    width:46px; height:46px;
    flex-shrink:0;
  }
  .brand-wordmark{
    display:flex;
    flex-direction:column;
    line-height:1;
  }
  .brand-wordmark-row{
    display:flex;
    align-items:baseline;
    gap:.32em;
  }
  .brand-max{
    font-family:var(--font-body);
    font-weight:800;
    font-size:26px;
    letter-spacing:.02em;
    color:var(--logo-max,#f4fbff);
  }
  .brand-examlab{
    font-family:var(--font-body);
    font-weight:800;
    font-size:15px;
    letter-spacing:.12em;
    color:var(--logo-lab,#70eef0);
  }
  .brand-tagline{
    font-family:var(--font-body);
    font-weight:700;
    font-size:8.5px;
    letter-spacing:.22em;
    color:var(--logo-tagline,#86a6b2);
    text-transform:uppercase;
    margin-top:3px;
    display:flex;
    align-items:center;
    gap:.5em;
    white-space:nowrap;
  }
  .brand-tagline::before,
  .brand-tagline::after{
    content:"";
    height:1px;
    width:14px;
    background:var(--brand-gold);
    flex-shrink:0;
  }
  .brand-clickable{
    cursor:pointer;
    background:none;
    border:none;
    display:flex;
    align-items:center;
    gap:10px;
    padding:0;
  }

  .context-row{
    max-width:1440px;
    margin:12px auto 0;
    display:flex;
    justify-content:space-between;
    align-items:flex-end;
    flex-wrap:wrap;
    gap:10px;
    display:none;
  }
  .context-row.show{ display:flex; }
  .context-back{
    font-family:var(--font-body);
    font-size:12px;
    font-weight:700;
    letter-spacing:.04em;
    color:var(--ink);
    cursor:pointer;
    background:rgba(19, 36, 55, 0.7);
    border:1px solid rgba(79, 238, 241, 0.25);
    border-radius:999px;
    padding:8px 16px;
    margin:0 0 10px;
    display:inline-flex;
    align-items:center;
    text-align:left;
    transition: background .15s ease, border-color .15s ease, color .15s ease, transform .1s ease, box-shadow .15s ease;
  }
  .context-back:hover{
    color:var(--accent);
    border-color:var(--accent);
    background:rgba(79, 238, 241, 0.14);
    box-shadow: 0 0 12px rgba(79, 238, 241, 0.25);
  }
  .context-back:active{ transform:translateY(1px); }
  .context-title{
    font-size:19px;
    font-weight:600;
    margin:0 0 2px;
  }
  .context-sub{
    font-size:12.5px;
    color:var(--ink-soft);
  }
  .context-stats{
    text-align:right;
    font-size:11.5px;
    color:var(--ink-soft);
    line-height:1.6;
    font-family:"Courier New",monospace;
  }
  .context-stats b{ color:var(--ink); font-size:13px; }

  /* ============================================================
     LANDING PAGE / HERO
     ============================================================ */
  .view-landing{ padding:0 20px 100px; }
  .hero-wrap{
    max-width:920px;
    margin:0 auto;
    padding-top:56px;
    perspective:1400px;
  }
  .hero-scene{
    position:relative;
    text-align:center;
    padding:70px 20px 30px;
    transform-style:preserve-3d;
    transition: transform .2s ease-out;
    will-change: transform;
  }
  .hero-orbit{
    position:absolute;
    inset:0;
    pointer-events:none;
  }
  .orbit-anchor{
    position:absolute;
    inset:0;
  }
  .orbit-ring{
    position:absolute;
    top:50%; left:50%;
    width:0; height:0;
    animation: ring-rotate var(--dur,26s) linear infinite;
  }
  @keyframes ring-rotate{
    from{ transform:rotate(0deg); }
    to{ transform:rotate(360deg); }
  }
  .orbit-item{
    position:absolute;
    top:-17px; left:-17px;
    transform: translate(var(--radius,160px), 0);
    width:34px; height:34px;
    color:var(--accent);
    opacity:.42;
  }
  .orbit-item svg{ width:100%; height:100%; }

  .hero-eyebrow{
    font-family:"Courier New",monospace;
    font-size:11px;
    letter-spacing:.2em;
    text-transform:uppercase;
    color:var(--ink-soft);
    margin-bottom:14px;
    position:relative;
    z-index:2;
  }
  .hero-title{
    position:relative;
    z-index:2;
    font-size:44px;
    font-weight:700;
    line-height:1.15;
    margin:0 0 18px;
    letter-spacing:.01em;
    text-shadow:
      0 1px 0 rgba(255,255,255,.5),
      0 2px 3px rgba(31,42,36,.06),
      0 10px 24px rgba(31,42,36,.08);
  }
  .hero-title .accent-word{ color:var(--accent); }
  .hero-tagline{
    position:relative;
    z-index:2;
    font-size:17px;
    font-style:italic;
    color:var(--ink-soft);
    margin:0 0 34px;
  }
  .hero-cta-label{
    position:relative;
    z-index:2;
    font-size:15px;
    font-weight:600;
    letter-spacing:.02em;
    color:var(--ink);
    margin:0 0 30px;
    padding-top:18px;
    border-top:1px solid var(--rule);
    display:inline-block;
  }

  /* ---- University Proficiency hub ---- */
  .proficiency-intro{max-width:820px;margin:0 auto 26px;padding:20px 22px;border:1px solid var(--rule);background:rgba(255,255,255,.42);font-size:14px;line-height:1.7;color:var(--ink);}
  .proficiency-intro p{margin:0 0 10px;}
  .proficiency-intro p:last-child{margin-bottom:0;}
  .proficiency-note{color:var(--ink-soft);font-size:13px;}
  .proficiency-skill-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;max-width:820px;margin:0 auto;}
  .proficiency-skill-card{border:1.5px solid var(--rule);background:rgba(255,255,255,.5);padding:18px 18px 16px;text-align:left;min-height:112px;display:flex;flex-direction:column;justify-content:center;gap:7px;}
  .proficiency-skill-card{cursor:pointer;transition:transform .16s ease,border-color .16s ease,box-shadow .16s ease,background .16s ease;}
  .proficiency-skill-card:hover{transform:translateY(-2px);border-color:var(--ink);background:rgba(255,255,255,.82);box-shadow:0 7px 18px rgba(0,0,0,.06);}
  .proficiency-skill-card:focus-visible{outline:2px solid var(--accent);outline-offset:3px;}
  .proficiency-skill-title{font-size:16px;font-weight:700;letter-spacing:.01em;}
  .proficiency-skill-desc{font-size:12.5px;line-height:1.5;color:var(--ink-soft);}
  .proficiency-empty{font-family:"Courier New",monospace;font-size:9.5px;letter-spacing:.07em;text-transform:uppercase;color:var(--accent);margin-top:2px;}
  @media(max-width:700px){.proficiency-skill-grid{grid-template-columns:1fr;}}

  /* ---- category cards ---- */
  .category-grid{
    max-width:920px;
    margin:0 auto;
    display:grid;
    grid-template-columns:repeat(2,1fr);
    gap:18px;
  }
  .category-card{
    position:relative;
    text-align:left;
    background:rgba(255,255,255,0.5);
    border:1.5px solid var(--rule);
    padding:22px 20px;
    cursor:pointer;
    transition: all .18s ease;
    display:flex;
    flex-direction:column;
    gap:10px;
  }
  .category-card:hover:not(.disabled){
    border-color:var(--accent);
    background:var(--accent-soft);
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(31,42,36,.1);
  }
  .category-card.disabled{
    cursor:not-allowed;
    opacity:.55;
  }
  .category-icon{
    width:34px; height:34px;
    color:var(--accent);
  }
  .category-name{
    font-size:19px;
    font-weight:700;
    letter-spacing:.02em;
  }
  .category-desc{
    font-size:12.5px;
    color:var(--ink-soft);
    line-height:1.5;
  }
  .category-badge{
    position:absolute;
    top:14px; right:14px;
    font-family:"Courier New",monospace;
    font-size:9.5px;
    letter-spacing:.06em;
    text-transform:uppercase;
    color:var(--stamp);
    border:1px solid var(--stamp);
    padding:2px 7px;
  }
  .category-arrow{
    margin-top:auto;
    font-family:"Courier New",monospace;
    font-size:11px;
    color:var(--accent);
    letter-spacing:.03em;
  }

  /* ============================================================
     VERSION SELECTION PAGE
     ============================================================ */
  .view-versions{ padding:44px 20px 100px; }
  .versions-wrap{ max-width:760px; margin:0 auto; }
  /* YDS and YÖKDİL use the same wide selection canvas as the IELTS flow.
     Apply it from the first render so the card cannot resize after a route
     change or after the IELTS marker runs. */
  body.max-category-yds.max-category-selection-mode .versions-wrap,
  body.max-category-yokdil.max-category-selection-mode .versions-wrap{
    max-width:1120px!important;
    margin:0 auto!important;
    padding:34px 24px 68px!important;
  }

  /* IELTS Ultimate keeps the original premium-card canvas.
     Scoped so Cambridge IELTS and every other exam selection stay unchanged. */
  body.max-ielts-ultimate-book-mode .versions-wrap{
    max-width:1120px!important;
    margin:0 auto!important;
    padding:34px 24px 68px!important;
  }
  @media(max-width:760px){
    body.max-category-yds.max-category-selection-mode .versions-wrap,
    body.max-category-yokdil.max-category-selection-mode .versions-wrap,
    body.max-ielts-ultimate-book-mode .versions-wrap{padding:22px 14px 44px!important;}
  }
  .versions-eyebrow{
    font-family:var(--font-heading);
    font-size:11px;
    font-weight:800;
    letter-spacing:.15em;
    text-transform:uppercase;
    color:var(--cyan-primary);
    margin-bottom:8px;
    display:inline-block;
  }
  .versions-title{
    font-size:clamp(28px,4vw,38px);
    font-weight:800;
    letter-spacing:-.02em;
    color:var(--text-primary);
    margin:0 0 8px;
  }
  .versions-sub{
    font-size:15px;
    color:var(--text-muted);
    margin:0 0 32px;
    line-height:1.6;
  }
  .version-list{
    display:flex;
    flex-direction:column;
    gap:16px;
  }
  .version-card{
    display:flex;
    justify-content:space-between;
    align-items:center;
    text-align:left;
    font-family:var(--font-body);
    background:var(--bg-surface);
    border:1px solid var(--border-subtle);
    border-radius:18px;
    padding:22px 26px;
    cursor:pointer;
    box-shadow:0 8px 24px rgba(0,0,0,0.3);
    backdrop-filter:blur(12px);
    -webkit-backdrop-filter:blur(12px);
    transition:transform .2s ease,border-color .2s ease,box-shadow .2s ease,background-color .2s ease;
    position:relative;
    overflow:hidden;
  }
  .version-card:hover{
    border-color:var(--cyan-neon);
    background:rgba(15,27,41,0.95);
    transform:translateY(-2px) scale(1.01);
    box-shadow:0 12px 36px var(--cyan-glow);
  }
  .version-card.is-free{
    background:rgba(15,27,41,0.72);
    border-color:rgba(79,238,241,0.18);
  }
  .version-card.is-free:hover{
    border-color:var(--cyan-bright);
    background:rgba(15,27,41,0.9);
    box-shadow:0 10px 30px rgba(79,238,241,0.18);
  }
  .version-card.is-premium,
  .version-card.ultimate-hub{
    background:linear-gradient(145deg,rgba(19,36,55,0.95),rgba(15,27,41,0.9));
    border:1.5px solid rgba(79,238,241,0.45);
    box-shadow:0 8px 28px rgba(0,0,0,0.4),0 0 20px rgba(79,238,241,0.12);
  }
  .version-card.is-premium:hover,
  .version-card.ultimate-hub:hover{
    border-color:var(--cyan-neon);
    background:linear-gradient(145deg,rgba(22,44,68,0.98),rgba(15,27,41,0.95));
    box-shadow:0 14px 44px rgba(0,0,0,0.5),0 0 32px rgba(121,244,240,0.35);
    transform:translateY(-3px) scale(1.015);
  }
  .version-card-head-row{
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:6px;
  }
  .card-badge{
    display:inline-flex;
    align-items:center;
    padding:3px 8px;
    border-radius:999px;
    font-size:10px;
    font-weight:800;
    letter-spacing:.08em;
    text-transform:uppercase;
  }
  .card-badge.free{
    color:var(--status-free);
    background:var(--status-free-bg);
    border:1px solid rgba(97,231,232,0.35);
  }
  .card-badge.premium,
  .premium-lock{
    color:var(--status-premium);
    background:var(--status-premium-bg);
    border:1px solid rgba(255,211,111,0.45);
    box-shadow:0 0 10px rgba(255,211,111,0.2);
  }
  .ielts-badge{
    display:inline-flex;
    align-items:center;
    padding:3px 8px;
    border-radius:6px;
    font-size:10px;
    font-weight:800;
    letter-spacing:.08em;
    color:#79f4f0;
    background:rgba(79,238,241,0.1);
    border:1px solid rgba(79,238,241,0.25);
    margin-bottom:6px;
  }
  .version-label{
    font-family:var(--font-heading);
    font-size:18px;
    font-weight:700;
    letter-spacing:-.015em;
    color:var(--text-primary);
  }
  .version-progress{
    font-family:var(--font-body);
    font-size:12.5px;
    font-weight:400;
    letter-spacing:0;
    color:var(--text-muted);
    margin-top:5px;
  }
  .version-go{
    font-family:var(--font-body);
    font-size:13px;
    font-weight:700;
    letter-spacing:.02em;
    color:var(--cyan-bright);
    flex-shrink:0;
    padding-left:18px;
    display:flex;
    align-items:center;
    gap:6px;
    transition:transform .15s ease,color .15s ease;
  }
  .version-card:hover .version-go{
    color:var(--cyan-neon);
    transform:translateX(3px);
  }
  .ielts-versions-note{
    color:var(--text-muted);
    font-size:14px;
    line-height:1.6;
    margin:0 0 24px;
    padding:16px 20px;
    background:rgba(15,27,41,0.5);
    border-radius:14px;
    border:1px solid var(--border-subtle);
  }

  /* ============================================================
     EXAM VIEW (existing interface — unchanged internals)
     ============================================================ */
  .view-exam{ padding:28px 20px 140px; }
  .layout{
    max-width:1440px;
    margin:0 auto;
    display:grid;
    grid-template-columns: minmax(0,760px) 260px;
    gap:30px;
    align-items:start;
    justify-content:center;
  }

  /* IELTS Reading only: give the exam-content column more room so the
     passage panel below (.reading-split) has space to grow. Scoped to
     #view-ielts-exam so the shared .layout used by other exam types
     (YÖKDİL/YDS/the 80-question exam view) is completely unaffected.
     Left sidebar (230px) and right IELTS Navigator (260px) columns are
     left exactly as they are — only the middle track's cap increases. */
  #view-ielts-exam .layout{
    max-width:1680px;
    grid-template-columns: minmax(0,1040px) 260px;
  }

  .attribution{
    position:sticky;
    top:150px;
    background:var(--panel-bg);
    border:1px solid var(--rule);
    padding:18px 16px;
    font-size:11.5px;
    line-height:1.65;
    color:var(--ink-soft);
  }
  .attribution h4{
    margin:0 0 8px;
    font-size:10.5px;
    letter-spacing:.1em;
    text-transform:uppercase;
    color:var(--ink);
    font-family:"Courier New",monospace;
    border-bottom:1px solid var(--rule);
    padding-bottom:8px;
  }
  .attribution p{ margin:0 0 10px; }
  .attribution .contact{
    font-family:"Courier New",monospace;
    font-size:11px;
    color:var(--ink);
  }

  .exam-content{ min-width:0; }

  .qsection-header{
    margin:38px 0 18px;
    padding-bottom:6px;
    border-bottom:1.5px solid var(--ink);
  }
  .qsection-header:first-child{ margin-top:0; }
  .qsection-header .label{
    font-family:"Courier New",monospace;
    font-size:11px;
    letter-spacing:.1em;
    text-transform:uppercase;
    color:var(--ink-soft);
  }
  .qsection-header .title{
    font-size:18px;
    font-weight:600;
    margin-top:2px;
  }

  .qcard{
    scroll-margin-top: 190px;
    border:1px solid var(--rule);
    border-radius:16px;
    background:#0f1b29;
    padding:22px 22px 18px;
    margin-bottom:18px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.35);
    transition: box-shadow .2s ease, border-color .2s ease;
  }
  .qcard.is-current{
    border-color:var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft), 0 8px 26px rgba(79,238,241,0.16);
  }

  .qnum-eyebrow{
    display:flex;
    align-items:center;
    gap:10px;
    margin-bottom:12px;
  }
  .qnum-badge{
    font-family:var(--font-body);
    font-size:12px;
    font-weight:800;
    border-radius:6px;
    background:var(--accent);
    color:#07131c;
    padding:3px 9px;
    letter-spacing:.05em;
  }
  .qstatus-tag{
    font-family:var(--font-body);
    font-size:11px;
    font-weight:700;
    letter-spacing:.05em;
    text-transform:uppercase;
    color:var(--ink-soft);
  }
  .qstatus-tag.correct{ color:var(--correct); }
  .qstatus-tag.wrong{ color:var(--wrong); }

  .stem{
    font-size:17.5px;
    line-height:1.6;
    white-space:pre-line;
    margin-bottom:20px;
    color:#ffffff;
  }

  .options{
    display:flex;
    flex-direction:column;
    gap:9px;
  }
  .opt{
    display:flex;
    align-items:flex-start;
    gap:14px;
    text-align:left;
    width:100%;
    border:1px solid var(--rule);
    border-radius:10px;
    background:#132437;
    padding:11px 15px;
    font-family:inherit;
    font-size:15.5px;
    line-height:1.5;
    color:var(--ink);
    cursor:pointer;
    transition:border-color .15s ease, background .15s ease, box-shadow .15s ease;
  }
  .opt:hover:not(:disabled){
    border-color:var(--accent);
    background:rgba(79,238,241,0.12);
    color:#ffffff;
    box-shadow: 0 0 12px rgba(79,238,241,0.18);
  }
  .opt:disabled{ cursor:default; }
  .opt .letter{
    font-family:var(--font-body);
    font-weight:800;
    color:var(--accent);
    flex-shrink:0;
    width:20px;
  }
  .opt.correct{
    border-color:var(--correct);
    background:var(--correct-bg);
    color:var(--correct);
  }
  .opt.wrong{
    border-color:var(--wrong);
    background:var(--wrong-bg);
    color:var(--wrong);
  }
  .opt.dim{ opacity:.5; }

  .feedback{
    min-height:20px;
    font-size:13px;
    font-family:"Courier New",monospace;
    margin-top:12px;
  }
  .feedback.correct{ color:var(--correct); }
  .feedback.wrong{ color:var(--wrong); }

  .navigator{
    position:sticky;
    top:150px;
    max-height:calc(100vh - 170px);
    overflow-y:auto;
    background:#0f1b29;
    border:1px solid var(--rule);
    border-radius:16px;
    padding:16px 14px 18px;
    box-shadow: 0 12px 36px rgba(0,0,0,0.35);
  }
  .nav-header{
    font-family:var(--font-body);
    font-size:11px;
    font-weight:800;
    letter-spacing:.08em;
    text-transform:uppercase;
    color:#84fbf6;
    margin-bottom:10px;
    padding-bottom:8px;
    border-bottom:1px solid rgba(79,238,241,0.16);
  }
  .nav-stats{
    font-family:var(--font-body);
    font-size:11.5px;
    color:var(--ink-soft);
    margin-bottom:12px;
    line-height:1.7;
  }
  .nav-stats .dot{
    display:inline-block;
    width:7px;height:7px;
    border-radius:50%;
    margin-right:6px;
  }
  .dot-correct{ background:var(--correct); }
  .dot-wrong{ background:var(--wrong); }
  .dot-neutral{ background:var(--ink-soft); }

  .prevnext{
    display:flex;
    gap:8px;
    margin-bottom:14px;
  }
  .startover-btn{
    display:flex;
    align-items:center;
    justify-content:center;
    gap:7px;
    width:100%;
    font-family:var(--font-body);
    font-size:12px;
    letter-spacing:.03em;
    font-weight:700;
    background:rgba(255,110,133,0.1);
    color:#ff8fa0;
    border:1px solid rgba(255,110,133,0.35);
    border-radius:8px;
    padding:9px 6px;
    margin-bottom:12px;
    cursor:pointer;
    transition: background .15s ease, border-color .15s ease, color .15s ease;
  }
  .startover-btn:hover{ background:var(--wrong); color:#07131c; border-color:var(--wrong); }
  .startover-btn:active{ transform:translateY(1px); }
  .pn-btn{
    flex:1;
    font-family:var(--font-body);
    font-size:12px;
    font-weight:700;
    letter-spacing:.03em;
    background:#132437;
    color:var(--ink);
    border:1px solid rgba(79,238,241,0.2);
    border-radius:8px;
    padding:9px 6px;
    cursor:pointer;
    text-align:center;
    transition:all .15s ease;
  }
  .pn-btn:hover:not(:disabled){ background:rgba(79,238,241,0.15); border-color:var(--accent); color:#fff; }
  .pn-btn:disabled{
    opacity:.35;
    cursor:not-allowed;
  }

  .nav-group{ margin-bottom:16px; }
  .nav-group-title{
    font-family:var(--font-body);
    font-size:11px;
    font-weight:800;
    letter-spacing:.06em;
    text-transform:uppercase;
    color:#84fbf6;
    margin-bottom:7px;
  }
  .nav-grid{
    display:grid;
    grid-template-columns: repeat(5, 1fr);
    gap:5px;
  }
  .nav-btn{
    position:relative;
    font-family:var(--font-body);
    font-size:12px;
    font-weight:700;
    border:1px solid rgba(79,238,241,0.18);
    border-radius:6px;
    background:#132437;
    color:var(--ink);
    padding:6px 0;
    cursor:pointer;
    text-align:center;
    transition: all .12s ease;
  }
  .nav-btn:hover{ border-color:var(--accent); background:rgba(79,238,241,0.18); color:#fff; }
  .nav-btn.correct{
    background:var(--correct);
    border-color:var(--correct);
    color:#07131c;
    font-weight:800;
  }
  .nav-btn.wrong{
    background:var(--wrong-bg);
    border-color:var(--wrong);
    color:var(--wrong);
  }
  .nav-btn.current{
    box-shadow: 0 0 0 2px var(--accent);
    font-weight:700;
  }
  /* YÖKDİL exam pages only: align the legacy monospace UI with the site's
     standard typography. The exam-mode guard deliberately excludes YÖKDİL
     cards, landing pages, and category-selection screens. */
  body.max-category-yokdil.max-category-exam-mode .context-back,
  body.max-category-yokdil.max-category-exam-mode .context-stats,
  body.max-category-yokdil.max-category-exam-mode .qsection-header .label,
  body.max-category-yokdil.max-category-exam-mode .qnum-badge,
  body.max-category-yokdil.max-category-exam-mode .qstatus-tag,
  body.max-category-yokdil.max-category-exam-mode .feedback,
  body.max-category-yokdil.max-category-exam-mode .nav-header,
  body.max-category-yokdil.max-category-exam-mode .nav-stats,
  body.max-category-yokdil.max-category-exam-mode .startover-btn,
  body.max-category-yokdil.max-category-exam-mode .pn-btn,
  body.max-category-yokdil.max-category-exam-mode .nav-group-title,
  body.max-category-yokdil.max-category-exam-mode .nav-btn,
  body.max-category-yokdil.max-category-exam-mode .opt .letter{
    font-family:var(--font-body);
  }

  body.max-category-yokdil.max-category-exam-mode .context-title,
  body.max-category-yokdil.max-category-exam-mode .qsection-header .title{
    font-family:var(--font-heading);
  }

  /* YÖKDİL exam-selection view: unified Inter typography */
  body.max-category-yokdil.max-category-selection-mode .context-back,
  body.max-category-yokdil.max-category-selection-mode .context-sub,
  body.max-category-yokdil.max-category-selection-mode .versions-eyebrow,
  body.max-category-yokdil.max-category-selection-mode .versions-sub,
  body.max-category-yokdil.max-category-selection-mode .context-title,
  body.max-category-yokdil.max-category-selection-mode .versions-title{
    font-family:var(--font-body);
  }

  /* YDS exam pages and exam-selection view: unified Inter typography */
  body.max-category-yds.max-category-exam-mode .context-back,
  body.max-category-yds.max-category-exam-mode .context-stats,
  body.max-category-yds.max-category-exam-mode .qsection-header .label,
  body.max-category-yds.max-category-exam-mode .qnum-badge,
  body.max-category-yds.max-category-exam-mode .qstatus-tag,
  body.max-category-yds.max-category-exam-mode .feedback,
  body.max-category-yds.max-category-exam-mode .nav-header,
  body.max-category-yds.max-category-exam-mode .nav-stats,
  body.max-category-yds.max-category-exam-mode .startover-btn,
  body.max-category-yds.max-category-exam-mode .pn-btn,
  body.max-category-yds.max-category-exam-mode .nav-group-title,
  body.max-category-yds.max-category-exam-mode .nav-btn,
  body.max-category-yds.max-category-exam-mode .opt .letter,
  body.max-category-yds.max-category-exam-mode .context-title,
  body.max-category-yds.max-category-exam-mode .qsection-header .title{
    font-family:var(--font-body);
  }
  body.max-category-yds.max-category-selection-mode .context-back,
  body.max-category-yds.max-category-selection-mode .context-sub,
  body.max-category-yds.max-category-selection-mode .versions-eyebrow,
  body.max-category-yds.max-category-selection-mode .versions-sub,
  body.max-category-yds.max-category-selection-mode .context-title,
  body.max-category-yds.max-category-selection-mode .versions-title{
    font-family:var(--font-body);
  }

  /* University Proficiency selection views: unified Inter typography */
  body.max-category-proficiency.max-category-selection-mode .context-back,
  body.max-category-proficiency.max-category-selection-mode .context-sub,
  body.max-category-proficiency.max-category-selection-mode .versions-eyebrow,
  body.max-category-proficiency.max-category-selection-mode .versions-sub,
  body.max-category-proficiency.max-category-selection-mode .context-title,
  body.max-category-proficiency.max-category-selection-mode .versions-title{
    font-family:var(--font-body,"Inter",sans-serif)!important;
  }

  .nav-btn.correct::after{
    content:"✓";
    position:absolute;
    top:-6px; right:-4px;
    font-size:9px;
    background:var(--correct);
    color:#fff;
    width:12px;height:12px;
    border-radius:50%;
    display:flex;align-items:center;justify-content:center;
    line-height:1;
  }

  .nav-toggle{
    display:none;
    position:fixed;
    bottom:20px;
    right:20px;
    z-index:50;
    font-family:"Courier New",monospace;
    font-size:13px;
    background:var(--ink);
    color:var(--paper);
    border:none;
    padding:12px 18px;
    cursor:pointer;
    box-shadow:0 2px 10px rgba(0,0,0,.25);
  }
  .nav-backdrop{
    display:none;
    position:fixed;
    inset:0;
    background:rgba(0,0,0,.35);
    z-index:60;
  }

  /* ============================================================
     RESPONSIVE
     ============================================================ */
  @media (max-width: 1100px){
    .layout{ grid-template-columns: 1fr; }
    #view-ielts-exam .layout{ grid-template-columns: 1fr; max-width:1440px; }
    .attribution{ position:static; order:3; margin-top:30px; }
    .exam-content{ order:1; }
    .navigator{
      display:none;
      position:fixed;
      z-index:70;
      top:0; right:0; bottom:0;
      width:min(320px, 86vw);
      max-height:100vh;
      border-left:1px solid var(--rule);
      border-top:none;
      box-shadow:-6px 0 20px rgba(0,0,0,.2);
    }
    .navigator.open{ display:block; }
    .nav-backdrop.open{ display:block; }
    .nav-toggle{ display:block; }
  }

  @media (max-width:820px){
    .category-grid{ grid-template-columns:1fr; }
    .hero-title{ font-size:32px; }
    .hero-tagline{ font-size:15px; }
    .orbit-item{ display:none; }
  }

  @media (max-width:520px){
    .stem{font-size:16px;}
    .opt{font-size:14.5px;}
    .nav-grid{ grid-template-columns: repeat(5,1fr); }
    .context-stats{ text-align:left; }
  }

  /* ============================================================
     IELTS INTERFACE (separate structure from the 80-question
     exams — its own tabs, navigator, audio player, timer, etc.)
     ============================================================ */
  .ielts-badge{
    display:inline-block;
    font-family:"Courier New",monospace;
    font-size:9.5px;
    letter-spacing:.08em;
    text-transform:uppercase;
    color:var(--accent);
    border:1px solid var(--accent);
    padding:2px 7px;
    margin-bottom:8px;
  }
  .ielts-versions-note{
    font-size:13px;
    color:var(--ink-soft);
    margin:-20px 0 26px;
    line-height:1.6;
  }
  .insta-box{
    margin-top:16px;
    background:var(--panel-bg);
    border:1px solid var(--rule);
    padding:16px 16px 15px;
    font-size:11.5px;
    line-height:1.6;
    color:var(--ink-soft);
  }
  .insta-box h4{
    margin:0 0 8px;
    font-size:10.5px;
    letter-spacing:.1em;
    text-transform:uppercase;
    color:var(--ink);
    font-family:"Courier New",monospace;
    border-bottom:1px solid var(--rule);
    padding-bottom:8px;
  }
  .insta-box a{
    display:inline-flex;
    align-items:center;
    gap:6px;
    font-family:"Courier New",monospace;
    font-size:12.5px;
    font-weight:700;
    color:var(--accent);
    text-decoration:none;
    border:1.3px solid var(--accent);
    padding:6px 10px;
    margin-top:2px;
    transition: all .15s ease;
  }
  .insta-box a:hover{ background:var(--accent); color:#fff; }

  .ielts-tabbar{
    display:flex;
    gap:8px;
    margin-bottom:26px;
    border-bottom:2px solid rgba(79,238,241,0.2);
    flex-wrap:wrap;
  }
  .ielts-tab{
    font-family:var(--font-body);
    font-size:13px;
    font-weight:700;
    letter-spacing:.04em;
    text-transform:uppercase;
    background:none;
    border:none;
    padding:10px 18px;
    cursor:pointer;
    color:var(--ink-soft);
    border-bottom:3px solid transparent;
    margin-bottom:-2px;
    transition: color .15s ease, border-color .15s ease;
  }
  .ielts-tab:hover{ color:#eefaff; }
  .ielts-tab.active{
    color:var(--accent);
    border-bottom-color:var(--accent);
    font-weight:800;
  }
  .ielts-pane{ display:none; }
  .ielts-pane.active{ display:block; }

  /* IELTS skill alignment: Reading keeps its full-width split layout.
     Listening, Writing and Speaking share a consistent responsive inset. */
  #view-ielts-exam .ielts-pane[data-pane="listening"],
  #view-ielts-exam .ielts-pane[data-pane="writing"],
  #view-ielts-exam .ielts-pane[data-pane="speaking"]{
    padding-inline-start:clamp(150px,20vw,212px);
  }
  @media (max-width:820px){
    #view-ielts-exam .ielts-pane[data-pane="listening"],
    #view-ielts-exam .ielts-pane[data-pane="writing"],
    #view-ielts-exam .ielts-pane[data-pane="speaking"]{ padding-inline-start:4px; }
  }

  /* ---- Listening ---- */
  .ielts-audio-player{
    position:sticky;
    top:150px;
    z-index:20;
    background:#0f1b29;
    color:var(--text-primary);
    border:1px solid rgba(79,238,241,0.2);
    border-radius:12px;
    padding:14px 18px;
    margin-bottom:26px;
    display:flex;
    align-items:center;
    gap:14px;
    flex-wrap:wrap;
    box-shadow:0 8px 24px rgba(0,0,0,.35);
  }
  .ielts-audio-title{
    font-family:var(--font-body);
    font-size:11.5px;
    font-weight:700;
    letter-spacing:.06em;
    text-transform:uppercase;
    color:var(--cyan-bright);
    flex-basis:100%;
    margin-bottom:2px;
  }
  .ielts-audio-controls{
    display:flex;
    align-items:center;
    gap:10px;
  }
  .ielts-audio-btn{
    background:rgba(255,255,255,.08);
    border:1px solid rgba(79,238,241,0.25);
    color:var(--text-primary);
    width:34px; height:34px;
    border-radius:50%;
    cursor:pointer;
    display:flex; align-items:center; justify-content:center;
    font-size:14px;
    transition: background .15s ease, border-color .15s ease;
    flex-shrink:0;
  }
  .ielts-audio-btn:hover{ background:rgba(79,238,241,0.15); border-color:var(--accent); color:#ffffff; }
  .ielts-audio-btn.play{ width:40px; height:40px; font-size:16px; background:var(--accent); border-color:var(--accent); color:#07131c; font-weight:800; }
  .ielts-audio-btn.play:hover{ background:var(--cyan-bright); box-shadow:0 0 14px rgba(79,238,241,0.4); }
  .ielts-audio-time{
    font-family:var(--font-body);
    font-size:11.5px;
    color:var(--text-muted);
    white-space:nowrap;
    min-width:90px;
  }
  .ielts-audio-seek{
    flex:1 1 160px;
    min-width:120px;
    accent-color:var(--accent);
    cursor:pointer;
  }
  .ielts-audio-vol{
    display:flex; align-items:center; gap:6px;
    font-size:13px;
  }
  .ielts-audio-vol input{ width:70px; accent-color:var(--accent); cursor:pointer; }

  .ielts-part-header{
    margin:34px 0 16px;
    padding-bottom:6px;
    border-bottom:1.5px solid rgba(79,238,241,0.2);
    scroll-margin-top:230px;
  }
  .ielts-part-header:first-of-type{ margin-top:0; }
  .ielts-part-header .label{
    font-family:var(--font-body);
    font-size:11px;
    font-weight:800;
    letter-spacing:.1em;
    text-transform:uppercase;
    color:var(--cyan-bright);
  }
  .ielts-part-header .title{
    font-size:18px;
    font-weight:600;
    margin-top:2px;
  }
  .ielts-instructions{
    font-size:13.5px;
    font-style:italic;
    color:var(--ink-soft);
    margin-bottom:16px;
    line-height:1.6;
  }

  .ielts-notes{
    background:#0f1b29;
    border:1px solid rgba(79,238,241,0.18);
    border-radius:12px;
    padding:16px 18px;
    margin-bottom:18px;
    font-size:15px;
    line-height:1.8;
    color:var(--text-primary);
  }
  .ielts-notes p{ margin:0 0 8px; }
  .ielts-notes ul{ margin:6px 0; padding-left:22px; }
  .ielts-notes li{ margin-bottom:6px; }
  .rp-notes-title{ font-weight:700; margin-bottom:10px !important; color:#ffffff; }

  .ielts-table-wrap{
    width:100%;
    max-width:100%;
    overflow-x:auto;
    overflow-y:hidden;
    -webkit-overflow-scrolling:touch;
    margin-bottom:12px;
  }
  .ielts-table{
    width:100%;
    max-width:100%;
    border-collapse:collapse;
    font-size:14px;
    background:#0f1b29;
    color:var(--text-primary);
    table-layout:fixed;
  }
  .ielts-table caption{
    font-weight:700;
    text-align:left;
    padding:8px 0;
    font-size:15px;
    color:var(--text-primary);
  }
  .ielts-table th, .ielts-table td{
    border:1px solid rgba(79,238,241,0.18);
    padding:8px 8px;
    text-align:left;
    vertical-align:top;
    min-width:0;
    overflow-wrap:break-word;
    word-break:normal;
  }
  .ielts-table th{ background:#132437; color:var(--cyan-bright); font-weight:700; }

  /* Reading question pane and table safe overflow containment for ALL IELTS Reading tables */
  #view-ielts-exam .reading-questions-pane{
    min-width:0;
    max-width:100%;
    overflow-x:hidden;
  }
  #view-ielts-exam .reading-questions-pane .ielts-table-wrap,
  #view-ielts-exam .reading-questions-pane .ielts-notes:has(> .ielts-table),
  #view-ielts-exam .reading-questions-pane .ielts-notes:has(> .ielts-table-wrap),
  #view-ielts-exam .reading-questions-pane .ielts-qgroup-note:has(> .ielts-table){
    width:100%;
    max-width:100%;
    overflow-x:auto;
    overflow-y:hidden;
    -webkit-overflow-scrolling:touch;
  }
  #view-ielts-exam .reading-questions-pane .ielts-table{
    width:100%;
    max-width:100%;
    table-layout:fixed;
    border-collapse:collapse;
  }
  #view-ielts-exam .reading-questions-pane .ielts-table th,
  #view-ielts-exam .reading-questions-pane .ielts-table td{
    min-width:0;
    overflow-wrap:break-word;
    word-break:normal;
    vertical-align:top;
    padding:8px 6px;
    hyphens:manual;
  }

  /* Table inputs: keep gap inputs contained within cell boundaries */
  #view-ielts-exam .reading-questions-pane .ielts-table .gap-wrap{
    display:inline-flex;
    align-items:center;
    gap:3px;
    max-width:100%;
    vertical-align:baseline;
    box-sizing:border-box;
  }
  #view-ielts-exam .reading-questions-pane .ielts-table .gap-input{
    width:100%;
    max-width:100%;
    min-width:40px;
    box-sizing:border-box;
  }

  /* Dedicated column widths ONLY for Cambridge IELTS 18 · Test 1 · Reading 1 (Questions 4–7) table */
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table{
    min-width:320px;
  }
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table col:nth-child(1),
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table th:nth-child(1),
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table td:nth-child(1){
    width:18% !important;
  }
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table col:nth-child(2),
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table th:nth-child(2),
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table td:nth-child(2){
    width:27% !important;
  }
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table col:nth-child(3),
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table th:nth-child(3),
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table td:nth-child(3){
    width:32% !important;
  }
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table col:nth-child(4),
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table th:nth-child(4),
  #view-ielts-exam .reading-questions-pane .ielts-table.ielts-cam18-t1-r1-table td:nth-child(4){
    width:23% !important;
  }

  .gap-input{
    font-family:var(--font-body);
    font-size:14px;
    border:none;
    border-bottom:2px solid var(--accent);
    background:rgba(19,36,55,0.85);
    border-radius:4px;
    padding:4px 8px;
    width:130px;
    color:#eefaff;
    transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
  }
  .gap-input:focus{ outline:none; border-bottom-color:var(--cyan-bright); background:#132437; box-shadow:0 0 8px rgba(79,238,241,0.25); }
  .gap-input.correct{ border-color:var(--correct); background:rgba(94,228,168,0.15); color:var(--correct); font-weight:700; }
  .gap-input.wrong{ border-color:var(--wrong); background:rgba(255,110,133,0.15); color:var(--wrong); }
  .gap-wrap{ position:relative; display:inline-block; }
  .gap-mark{
    font-size:12px;
    margin-left:3px;
    font-weight:700;
  }
  .gap-mark.correct{ color:var(--correct); }
  .gap-mark.wrong{ color:var(--wrong); }
  .gap-answer-hint{
    font-family:var(--font-body);
    font-size:11px;
    color:var(--wrong);
    margin-left:4px;
  }

  /* Image-backed IELTS diagram labelling. The source image remains intact;
     answer fields are HTML overlays so typing, grading and saved progress
     continue to use the normal IELTS gap-input engine. */
  .ielts-diagram-overlay{
    position:relative;
    width:100%;
    max-width:613px;
    margin:8px auto 16px;
  }
  .ielts-diagram-overlay>img{
    display:block;
    width:100%;
    height:auto;
  }
  .ielts-diagram-gap{
    position:absolute;
    z-index:2;
    display:block;
  }
  .ielts-diagram-gap .gap-wrap{display:block;width:100%}
  .ielts-diagram-gap .ielts-q-num{display:none!important}
  .ielts-diagram-gap .gap-input{
    width:100%;
    min-width:0;
    height:clamp(20px,4.1vw,29px);
    box-sizing:border-box;
    padding:2px 5px;
    border:1.5px solid var(--accent);
    border-radius:4px;
    background:#132437;
    color:#eefaff;
    font-size:clamp(10px,2vw,14px);
    line-height:1.1;
  }
  .ielts-diagram-gap .gap-input:focus{
    border-color:var(--cyan-bright);
    box-shadow:0 0 8px rgba(79,238,241,0.3);
  }
  .ielts-diagram-gap .gap-mark{
    position:absolute;
    left:calc(100% + 3px);
    top:50%;
    transform:translateY(-50%);
    margin:0;
    white-space:nowrap;
  }
  .cam16-qanat-overlay .q1{left:6.9%;top:6.6%;width:25.5%}
  .cam16-qanat-overlay .q2{left:62.8%;top:6.6%;width:33.0%}
  .cam16-qanat-overlay .q3{left:63.5%;top:39.1%;width:32.6%}
  .cam16-qanat-overlay .q4{left:45.5%;top:50.6%;width:27.0%}
  .cam16-qanat-overlay .q5{left:43.7%;top:91.1%;width:27.0%}
  .cam16-qanat-overlay .q6{left:41.4%;top:95.8%;width:26.0%}
  @media(max-width:520px){
    .ielts-diagram-gap .gap-input{padding:1px 3px;border-width:1px}
  }

  .ielts-qblock{
    border:1px solid rgba(79,238,241,0.18);
    border-radius:16px;
    background:#0f1b29;
    padding:20px 20px 16px;
    margin-bottom:18px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.3);
    scroll-margin-top:230px;
  }
  .ielts-qgroup-note{ font-size:14px; margin-bottom:14px; line-height:1.65; color:var(--text-primary); }
  .ielts-qgroup-note p{ margin:0 0 8px; }

  .ielts-q{
    margin-bottom:16px;
    padding-bottom:14px;
    border-bottom:1px dashed rgba(79,238,241,0.16);
  }
  .ielts-q:last-child{ border-bottom:none; margin-bottom:0; padding-bottom:0; }
  .ielts-q-prompt{
    font-size:15.5px;
    line-height:1.55;
    margin-bottom:10px;
    display:flex;
    gap:10px;
    color:var(--text-primary);
  }
  .ielts-q-num{
    font-family:var(--font-body);
    font-size:12px;
    font-weight:800;
    border-radius:4px;
    background:var(--accent);
    color:#07131c;
    padding:2px 7px;
    height:fit-content;
    flex-shrink:0;
  }
  .ielts-q-num.answered-correct{ background:var(--correct); color:#07131c; }
  .ielts-q-num.answered-wrong{ background:var(--wrong); color:#07131c; }
  .ielts-choice-list{
    display:flex;
    flex-direction:column;
    gap:6px;
    margin-left:34px;
  }
  .ielts-choice-list.inline{ flex-direction:row; flex-wrap:wrap; }
  .ielts-choice-btn{
    text-align:left;
    border:1px solid rgba(79,238,241,0.18);
    border-radius:8px;
    background:#132437;
    color:var(--text-primary);
    padding:8px 12px;
    font-family:inherit;
    font-size:14px;
    cursor:pointer;
    transition: all .15s ease;
  }
  .ielts-choice-btn:hover{ border-color:var(--accent); background:rgba(79,238,241,0.12); color:#ffffff; }
  .ielts-choice-btn.correct{ border-color:var(--correct); background:rgba(94,228,168,0.15); color:var(--correct); font-weight:700; }
  .ielts-choice-btn.wrong{ border-color:var(--wrong); background:rgba(255,110,133,0.15); color:var(--wrong); }
  .ielts-choice-btn .cl{ font-family:var(--font-body); font-weight:800; color:var(--accent); margin-right:8px; }
  /* IELTS Reading multiple-choice answer options: two-column row alignment */
  .ielts-pane[data-pane="reading"] .ielts-choice-btn.ielts-reading-mcq-btn,
  .ielts-pane[data-pane="reading"] .ielts-choice-list:not(.inline) .ielts-choice-btn:has(.cl) {
    display: grid !important;
    grid-template-columns: 32px minmax(0, 1fr);
    column-gap: 8px;
    align-items: center;
    text-align: left;
    padding: 8px 12px 8px 8px;
    width: 100%;
    box-sizing: border-box;
  }
  .ielts-pane[data-pane="reading"] .ielts-choice-btn.ielts-reading-mcq-btn .cl,
  .ielts-pane[data-pane="reading"] .ielts-choice-list:not(.inline) .ielts-choice-btn:has(.cl) .cl {
    font-weight: 700;
    width: 32px;
    min-width: 32px;
    max-width: 32px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    flex-shrink: 0;
    line-height: 1;
  }
  .ielts-pane[data-pane="reading"] .ielts-choice-btn.ielts-reading-mcq-btn .ielts-choice-text,
  .ielts-pane[data-pane="reading"] .ielts-choice-list:not(.inline) .ielts-choice-btn:has(.cl) .ielts-choice-text {
    text-align: left;
    line-height: 1.4;
    white-space: normal;
    word-break: normal;
    overflow-wrap: break-word;
    min-width: 0;
  }
  .ielts-check-checkbox{
    display:flex; align-items:center; gap:8px;
    border:1px solid rgba(79,238,241,0.18);
    border-radius:8px;
    background:#132437;
    color:var(--text-primary);
    padding:8px 12px;
    cursor:pointer;
    font-size:14px;
    transition: all .15s ease;
  }
  .ielts-check-checkbox:hover{ border-color:var(--accent); background:rgba(79,238,241,0.12); color:#ffffff; }
  .ielts-check-checkbox.correct{ border-color:var(--correct); background:rgba(94,228,168,0.15); }
  .ielts-check-checkbox.wrong{ border-color:var(--wrong); background:rgba(255,110,133,0.15); }
  .ielts-pair-status{
    font-family:"Courier New",monospace;
    font-size:11px;
    margin-left:34px;
    margin-top:6px;
    color:var(--ink-soft);
  }

  .ielts-map-img{ max-width:100%; border:1.5px solid var(--rule); margin-bottom:16px; }

  /* ---- Listening: supporting visual (map/diagram/table/matching box)
     shown side-by-side with the exact question range it belongs to,
     instead of appearing above earlier, unrelated questions. ---- */
  .ielts-listening-visual-split{
    display:grid;
    grid-template-columns: minmax(0,1fr) minmax(0,1fr);
    gap:22px;
    align-items:start;
    margin-bottom:18px;
  }
  .ielts-listening-visual-pane{ min-width:0; }
  .ielts-listening-visual-pane .ielts-qgroup-note{ margin-bottom:0; }
  .ielts-listening-visual-questions{ min-width:0; }
  .ielts-listening-visual-questions .ielts-match-block{ margin-bottom:0; }


  /* Cambridge IELTS 16 · Test 4 · Listening Section 2 · Q15–20 only */
  .ielts-listening-visual-split.cam16-t4-q15-20{
    grid-template-columns:minmax(0,1.7fr) minmax(300px,.9fr); gap:18px;
  }
  .ielts-listening-visual-split.cam16-t4-q15-20 .ielts-listening-visual-pane .ielts-map-img{
    width:100%; max-width:none; height:auto; display:block; margin:0;
  }
  .ielts-listening-visual-split.cam16-t4-q15-20 .ielts-listening-visual-questions{font-size:.96em;}

  /* Cambridge IELTS 18 · Test 2 · Listening Section 2 · Q15–20 only */
  .ielts-listening-visual-split.cam18-t2-q15-20{
    grid-template-columns:minmax(0,1.7fr) minmax(300px,.9fr);
    gap:18px;
  }
  .ielts-listening-visual-split.cam18-t2-q15-20 .ielts-listening-visual-pane .ielts-map-img{
    width:100%;
    max-width:none;
    height:auto;
    display:block;
    margin:0;
  }
  .ielts-listening-visual-split.cam18-t2-q15-20 .ielts-listening-visual-questions{
    font-size:0.96em;
  }

  /* Cambridge IELTS 21 · Test 2 · Listening Section 2 · Q15–20 only */
  .ielts-listening-visual-split.cam21-t2-q15-20{
    grid-template-columns:minmax(0,1.7fr) minmax(300px,.9fr);
    gap:18px;
  }
  .ielts-listening-visual-split.cam21-t2-q15-20 .ielts-listening-visual-pane .ielts-map-img{
    width:100%; max-width:none; height:auto; display:block; margin:0;
  }
  .ielts-listening-visual-split.cam21-t2-q15-20 .ielts-listening-visual-questions{ font-size:0.96em; }
  @media (max-width: 900px){
    .ielts-listening-visual-split{ grid-template-columns:1fr; gap:14px; }
  }

  /* ---- Compact matching block: used instead of a full multiple-choice
     button list whenever several consecutive questions share the exact
     same set of options (diagram/map letter-labelling, paragraph/
     heading matching, feature/people/opinion matching, etc). The shared
     options are shown once, in a compact legend, immediately above the
     questions they belong to; each question then just gets a small
     letter/number input rather than a repeated full option list. ---- */
  .ielts-match-block{ margin-bottom:18px; }
  .ielts-match-legend{
    font-size:13.5px;
    line-height:1.6;
    background:#132437;
    border:1px solid rgba(79,238,241,0.25);
    border-radius:10px;
    padding:9px 12px;
    margin-bottom:12px;
    color:var(--text-primary);
  }
  .ielts-match-legend b{ font-family:var(--font-body); font-weight:800; color:var(--accent); }
  .ielts-match-legend-label{ color:var(--text-muted); margin-right:4px; }
  .ielts-match-legend-list{ display:flex; flex-direction:column; gap:4px; }
  .ielts-match-legend-row{ display:flex; gap:8px; }
  .ielts-match-legend-row b{ flex-shrink:0; min-width:18px; }
  .ielts-match-rows{ display:flex; flex-direction:column; gap:9px; }
  .ielts-match-row{
    display:flex;
    align-items:center;
    gap:10px;
    padding-bottom:9px;
    border-bottom:1px dashed rgba(79,238,241,0.16);
  }
  .ielts-match-row:last-child{ border-bottom:none; padding-bottom:0; }
  .ielts-match-prompt{ flex:1; font-size:14.5px; line-height:1.5; color:var(--text-primary); }
  .match-input{
    width:56px;
    text-align:center;
    text-transform:uppercase;
    background:#132437;
    color:#eefaff;
    border:1px solid rgba(79,238,241,0.3);
    border-radius:6px;
    padding:4px 6px;
    font-family:var(--font-body);
    font-weight:700;
  }
  .match-input:focus{ outline:none; border-color:var(--accent); box-shadow:0 0 8px rgba(79,238,241,0.25); }

  /* ---- Reading split pane ---- */
  .reading-split{
    display:grid;
    grid-template-columns: minmax(0,1fr) 367px;
    gap:26px;
    align-items:start;
  }
  .reading-passage-pane{
    position:sticky;
    top:150px;
    max-height:calc(100vh - 170px);
    overflow-y:auto;
    background:#0f1b29;
    border:1px solid rgba(79,238,241,0.2);
    border-radius:16px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.35);
    padding:22px 24px;
    color:var(--text-primary);
  }
  .reading-passage-pane .rp-title{
    font-family:var(--font-body);
    font-size:20px;
    font-weight:800;
    color:#ffffff;
    margin:0 0 10px;
    line-height:1.35;
  }
  .reading-passage-pane .rp-sub{
    font-style:italic;
    color:var(--text-muted);
    font-size:14px;
    margin:0 0 16px;
  }
  .reading-passage-pane p{ font-size:15px; line-height:1.75; margin:0 0 14px; color:var(--text-primary); }
  .reading-passage-pane .rp-footnote{ font-size:12px; color:var(--text-muted); border-top:1px solid rgba(79,238,241,0.15); padding-top:8px; margin:14px 0; }
  .reading-questions-pane{ min-width:0; }

  .rp-passage-tabs{
    display:flex; gap:6px; margin-bottom:18px;
  }
  .rp-passage-tab{
    font-family:var(--font-body);
    font-size:11.5px;
    font-weight:700;
    letter-spacing:.04em;
    background:#132437;
    border:1px solid rgba(79,238,241,0.2);
    border-radius:8px;
    padding:7px 13px;
    cursor:pointer;
    color:var(--text-muted);
    transition:all .15s ease;
  }
  .rp-passage-tab:hover{ color:#ffffff; border-color:var(--accent); }
  .rp-passage-tab.active{ border-color:var(--accent); color:var(--cyan-bright); font-weight:800; background:rgba(79,238,241,0.15); box-shadow:0 0 12px rgba(79,238,241,0.2); }

  /* ---- Writing / Speaking ---- */
  .ielts-task-box{
    background:#0f1b29;
    border:1px solid rgba(79,238,241,0.18);
    border-radius:14px;
    padding:22px 24px;
    margin-bottom:20px;
    color:var(--text-primary);
  }
  .ielts-task-box h3{ margin:0 0 12px; font-size:19px; color:#ffffff; }
  .ielts-task-prompt{ font-size:15.5px; line-height:1.7; white-space:pre-line; margin-bottom:18px; color:var(--text-primary); }
  .ielts-chart-wrap{ background:#132437; border:1px solid rgba(79,238,241,0.18); border-radius:10px; padding:18px; margin-bottom:18px; }
  .ielts-chart-title{ text-align:center; font-weight:700; font-size:14px; margin-bottom:14px; color:#ffffff; }
  .show-sample-btn{
    font-family:var(--font-body);
    font-size:12px;
    font-weight:700;
    letter-spacing:.04em;
    text-transform:uppercase;
    background:var(--accent);
    color:#07131c;
    border:none;
    border-radius:8px;
    padding:10px 18px;
    cursor:pointer;
    transition: all .15s ease;
  }
  .show-sample-btn:hover{ background:var(--cyan-bright); box-shadow:0 0 12px rgba(79,238,241,0.4); }
  .sample-answer{
    display:none;
    margin-top:18px;
    padding-top:18px;
    border-top:1.5px dashed rgba(79,238,241,0.18);
  }
  .sample-answer.open{ display:block; }
  .sample-answer-label{
    font-family:var(--font-body);
    font-size:11px;
    font-weight:800;
    letter-spacing:.1em;
    text-transform:uppercase;
    color:var(--stamp);
    border:1px solid var(--stamp);
    border-radius:6px;
    padding:3px 8px;
    display:inline-block;
    margin-bottom:12px;
  }
  .sample-answer-body{ font-size:15px; line-height:1.8; color:var(--text-primary); }
  .sample-answer-body p{ margin:0 0 12px; }

  .speaking-part-box{
    background:#0f1b29;
    border:1px solid rgba(79,238,241,0.18);
    border-radius:14px;
    padding:22px 24px;
    margin-bottom:20px;
    color:var(--text-primary);
  }
  .speaking-cue-card{
    background:#132437;
    border:1px solid var(--accent);
    border-radius:10px;
    padding:14px 16px;
    margin-bottom:16px;
    font-size:15px;
    line-height:1.6;
    color:var(--text-primary);
  }
  .speaking-cue-card ul{ margin:8px 0 0; padding-left:20px; }
  .speaking-q-list{ margin:0 0 18px; padding-left:20px; font-size:14.5px; line-height:1.8; color:var(--text-primary); }
  .phrase-toggle-btn, .show-sample-btn{ margin-right:10px; margin-bottom:8px; }
  .phrase-grid{
    display:none;
    grid-template-columns: repeat(3, 1fr);
    gap:8px 14px;
    margin:14px 0 18px;
    padding:16px;
    background:#132437;
    border:1px solid rgba(79,238,241,0.2);
    border-radius:10px;
  }
  .phrase-grid.open{ display:grid; }
  .phrase-chip{
    font-family:var(--font-body);
    font-size:12.5px;
    color:var(--cyan-bright);
  }
  .phrase-chip::before{ content:"— "; }

  /* ---- Compact exam timer widget ("Time yourself" stopwatch).
     Styles are standardized platform-wide via shared-exam-timer.css ---- */

  /* ---- IELTS navigator ---- */
  .ielts-nav-section{ margin-bottom:16px; }
  .ielts-nav-section-title{
    font-family:var(--font-body);
    font-size:11px;
    font-weight:800;
    letter-spacing:.08em;
    text-transform:uppercase;
    color:var(--cyan-bright);
    background:rgba(79,238,241,0.12);
    border-radius:6px;
    padding:5px 8px;
    margin-bottom:8px;
  }
  .ielts-nav-item{
    display:flex;
    justify-content:space-between;
    align-items:center;
    width:100%;
    text-align:left;
    background:none;
    border:none;
    border-bottom:1px solid rgba(79,238,241,0.12);
    padding:8px 4px;
    font-size:12.5px;
    cursor:pointer;
    color:var(--ink-soft);
    font-family:inherit;
    transition:color .15s ease;
  }
  .ielts-nav-item:hover{ color:var(--cyan-bright); }
  .ielts-nav-item.active{ color:var(--accent); font-weight:700; }
  .ielts-nav-item .prog{
    font-family:var(--font-body);
    font-size:11px;
    color:var(--ink-soft);
  }
  .ielts-nav-item .prog.done{ color:var(--correct); font-weight:700; }

  @media (max-width: 1100px){
    .reading-split{ grid-template-columns:1fr; }
    .reading-passage-pane{ position:static; max-height:none; margin-bottom:22px; }
  }
  @media (max-width: 640px){
    .ielts-audio-player{ top:0; }
    .phrase-grid{ grid-template-columns:1fr 1fr; }
    .ielts-timer-widget{ top:80px; right:12px; gap:5px; }
    .ielts-timer-circle{ width:96px; height:96px; border-width:4px; }
    .ielts-timer-display{ font-size:14px; }
    .ielts-timer-label{ font-size:9.5px; }
    .ielts-timer-btn{ width:22px; height:22px; font-size:10px; }
  }

  @media (prefers-reduced-motion: reduce){
    html{ scroll-behavior:auto; }
    *{transition:none !important; animation:none !important;}
  }

  .prof-reading-passage{max-width:860px;margin:0 0 18px;padding:22px 24px;border:1px solid rgba(79,238,241,0.2);border-radius:14px;background:#0f1b29;color:var(--text-primary);font-size:15px;line-height:1.78;white-space:normal;}
  .prof-qtype{font-family:var(--font-body);font-size:11px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--cyan-bright);margin:8px 0 10px;}
  .prof-text-answer{display:flex;gap:8px;align-items:center}.prof-text-answer input{flex:1;min-width:0;padding:12px;border:1px solid rgba(79,238,241,0.25);border-radius:8px;font:inherit;background:#132437;color:#ffffff}.prof-check{padding:12px 18px;border:none;border-radius:8px;background:var(--accent);color:#07131c;font-weight:800;cursor:pointer}

/* ===== Extended University Proficiency UI ===== */
.theme-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;margin-top:18px}.theme-card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:18px;text-align:left;cursor:pointer;display:flex;flex-direction:column;gap:10px;min-height:130px;transition:.18s ease;box-shadow:0 3px 12px rgba(15,23,42,.04)}.theme-card:hover{transform:translateY(-2px);border-color:#818cf8;box-shadow:0 8px 22px rgba(79,70,229,.12)}.theme-card .theme-num{font-size:.75rem;font-weight:800;letter-spacing:.08em;color:#6366f1}.theme-card strong{font-size:1rem;line-height:1.3;color:#111827}.theme-card span:last-child{font-size:.8rem;color:#64748b}.speaking-question-list{display:grid;gap:18px}.speaking-q,.writing-task{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 4px 16px rgba(15,23,42,.05)}.speaking-q h3{font-family:Georgia,serif;font-size:1.25rem;line-height:1.45;margin:10px 0}.speaking-q.extended{max-width:900px;margin:auto}.prof-reveal-actions,.writing-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.prof-reveal-actions button,.writing-actions button,.task-pager button{border:1px solid #cbd5e1;border-radius:9px;background:#fff;padding:10px 14px;font-weight:800;font-size:.78rem;letter-spacing:.02em;cursor:pointer}.prof-reveal-actions button:first-child,.writing-actions button:first-child{border-color:#6366f1;color:#4f46e5}.prof-reveal-actions button:hover,.writing-actions button:hover,.task-pager button:hover:not(:disabled){background:#f8fafc}.prof-reveal{margin-top:12px;padding:16px;border-radius:12px;background:#f8fafc;border:1px solid #e2e8f0}.prof-reveal.sample{line-height:1.7;color:#334155}.phrase-chip-grid{display:flex;flex-wrap:wrap;gap:8px}.phrase-chip-grid span{background:#eef2ff;color:#3730a3;border:1px solid #c7d2fe;border-radius:999px;padding:6px 10px;font-size:.82rem;font-weight:700}.task-note{background:#fffbeb;border-left:4px solid #f59e0b;padding:10px 12px;border-radius:8px;color:#78350f}.visual-type{display:inline-block;background:#eef2ff;color:#4338ca;border-radius:999px;padding:5px 10px;font-size:.75rem;font-weight:800}.original-visual{width:100%;height:auto;margin:12px 0;border-radius:16px;border:1px solid #e2e8f0}.dual-visual{display:grid;grid-template-columns:1fr 1fr;gap:12px}.solution-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0}.solution-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:14px;padding:10px;text-align:center}.solution-card .original-visual{margin:0 0 8px}.problem-prompt{font-size:1.05rem;line-height:1.6}.task-pager{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid #e2e8f0}.task-pager button:disabled{opacity:.4;cursor:not-allowed}.pair-topic-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.pair-topic-grid>div{padding:18px;border-radius:14px;background:#f8fafc;border:1px solid #e2e8f0}.pair-topic-grid span{font-size:.72rem;font-weight:900;color:#6366f1}.paired-samples{display:grid;grid-template-columns:1fr 1fr;gap:18px}.writing-prompt-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:12px}.writing-prompt-card{text-align:left;background:#fff;border:1px solid #e2e8f0;border-radius:14px;padding:16px;cursor:pointer;display:flex;flex-direction:column;gap:8px}.writing-prompt-card:hover{border-color:#818cf8;background:#fafaff}.writing-prompt-card span{font-size:.72rem;font-weight:900;color:#6366f1}.writing-prompt-card strong{line-height:1.4;color:#1e293b}.source-box{background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:14px;margin-bottom:10px}.writing-task h2{font-family:Georgia,serif;line-height:1.4}.prof-qtype{font-size:.75rem;color:#64748b;margin:.35rem 0 .8rem;font-weight:700}.prof-text-answer{display:flex;gap:8px}.prof-text-answer input{flex:1;border:1px solid #cbd5e1;border-radius:10px;padding:12px;font-size:1rem}.prof-check{border:0;border-radius:10px;background:#4f46e5;color:white;font-weight:800;padding:0 18px;cursor:pointer}@media(max-width:700px){.dual-visual,.solution-grid,.pair-topic-grid,.paired-samples{grid-template-columns:1fr}.task-pager{flex-wrap:wrap}.theme-grid{grid-template-columns:1fr}}


  /* University Proficiency: wider, denser desktop layouts only */
  #view-versions:has(.proficiency-intro) .versions-wrap,
  #view-versions:has(.theme-grid) .versions-wrap,
  #view-versions:has(.writing-prompt-grid) .versions-wrap{max-width:1500px;width:calc(100% - 48px);}
  #view-versions .proficiency-intro{max-width:none;margin-bottom:14px;padding:14px 18px;line-height:1.5;}
  #view-versions .proficiency-skill-grid{max-width:none;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;}
  #view-versions .proficiency-skill-card{min-height:92px;padding:13px 15px 12px;gap:5px;}
  #view-versions .theme-grid{grid-template-columns:repeat(7,minmax(0,1fr));gap:10px;margin-top:12px;}
  #view-versions .theme-card{min-height:105px;padding:13px;gap:7px;}
  #view-versions .theme-card .theme-num{color:#26332d;}
  #view-versions .writing-prompt-grid{grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;}
  #view-versions .writing-prompt-card{padding:13px;}
  #view-versions .writing-prompt-card span{color:#26332d;}
  @media(max-width:1200px){#view-versions .theme-grid{grid-template-columns:repeat(5,minmax(0,1fr));}#view-versions .writing-prompt-grid{grid-template-columns:repeat(4,minmax(0,1fr));}#view-versions .proficiency-skill-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
  @media(max-width:850px){#view-versions:has(.proficiency-intro) .versions-wrap,#view-versions:has(.theme-grid) .versions-wrap,#view-versions:has(.writing-prompt-grid) .versions-wrap{width:calc(100% - 28px);}#view-versions .theme-grid,#view-versions .writing-prompt-grid,#view-versions .proficiency-skill-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media(max-width:600px){#view-versions .theme-grid,#view-versions .writing-prompt-grid,#view-versions .proficiency-skill-grid{grid-template-columns:1fr;}}



  /* ============================================================
     PHASE 1 — reusable performance analytics UI
     ============================================================ */
  .performance-unlock{
    margin:10px 0 12px;
    border:1px solid rgba(79,238,241,0.2);
    border-radius:12px;
    background:#132437;
    padding:12px;
  }
  .performance-progress{
    font-size:12px;
    line-height:1.45;
    color:var(--text-muted);
    margin-bottom:8px;
  }
  .performance-progress strong{color:#ffffff;}
  .performance-btn{
    width:100%;
    border:none;
    border-radius:8px;
    background:linear-gradient(135deg, var(--cyan-primary), var(--cyan-bright));
    color:#07131c;
    font-weight:800;
    font-size:11px;
    letter-spacing:.035em;
    line-height:1.35;
    padding:10px 9px;
    cursor:pointer;
    box-shadow:0 0 14px rgba(79,238,241,0.3);
    transition: all .15s ease;
  }
  .performance-btn:hover:not(:disabled){
    box-shadow:0 0 20px rgba(79,238,241,0.5);
    transform:translateY(-1px);
  }
  .performance-btn:disabled{
    cursor:not-allowed;
    background:rgba(255,255,255,0.06);
    color:var(--text-dim);
    border:none;
    box-shadow:none;
    font-weight:700;
  }
  .performance-lock-note{
    display:block;
    font-size:10.5px;
    line-height:1.4;
    color:var(--text-muted);
  }
  .performance-modal-backdrop{
    position:fixed;
    inset:0;
    z-index:10000;
    background:rgba(7,19,28,0.85);
    backdrop-filter:blur(8px);
    display:none;
    align-items:center;
    justify-content:center;
    padding:20px;
  }
  .performance-modal-backdrop.open{display:flex;}
  .performance-modal{
    width:min(760px,96vw);
    max-height:88vh;
    overflow:auto;
    background:#0f1b29;
    color:var(--text-primary);
    border:1px solid rgba(79,238,241,0.3);
    border-radius:16px;
    box-shadow:0 24px 70px rgba(0,0,0,.6), 0 0 24px rgba(79,238,241,0.15);
    padding:24px;
  }
  .performance-modal *{box-sizing:border-box;}
  .performance-modal-title{
    text-align:center;
    font-size:12px;
    font-weight:900;
    letter-spacing:.16em;
    color:var(--cyan-bright);
    text-transform:uppercase;
  }
  .performance-score{
    text-align:center;
    padding:12px 0 20px;
    border-bottom:1px solid rgba(79,238,241,0.16);
  }
  .performance-score .fraction{font-size:38px;font-weight:900;line-height:1.05;color:#ffffff;}
  .performance-score .percent{font-size:18px;font-weight:800;margin-top:6px;color:var(--cyan-bright);}
  .performance-section-title{
    margin:20px 0 10px;
    font-size:13px;
    font-weight:900;
    letter-spacing:.05em;
    color:var(--cyan-bright);
  }
  .performance-table{
    width:100%;
    border-collapse:collapse;
    font-size:13px;
  }
  .performance-table th,.performance-table td{
    padding:9px 10px;
    border-bottom:1px solid rgba(79,238,241,0.12);
    text-align:left;
    color:var(--text-primary);
  }
  .performance-table th{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--cyan-bright);}
  .performance-table th:nth-child(2),.performance-table td:nth-child(2),
  .performance-table th:nth-child(3),.performance-table td:nth-child(3){text-align:right;white-space:nowrap;}
  .performance-highlights{
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:10px;
    margin-top:18px;
  }
  .performance-highlight{
    border:1px solid rgba(79,238,241,0.16);
    border-radius:10px;
    padding:12px;
    background:#132437;
    font-size:13px;
    line-height:1.5;
  }
  .performance-highlight strong{display:block;color:var(--cyan-bright);font-size:11px;text-transform:uppercase;letter-spacing:.06em;margin-bottom:3px;}
  .performance-actions{display:flex;justify-content:flex-end;gap:10px;margin-top:20px;}
  .performance-action-btn{
    border-radius:8px;
    padding:10px 18px;
    font-size:12px;
    font-weight:800;
    cursor:pointer;
    border:none;
    transition:all .15s ease;
  }
  .performance-review{background:linear-gradient(135deg, var(--cyan-primary), var(--cyan-bright));color:#07131c;}
  .performance-review:hover{box-shadow:0 0 16px rgba(79,238,241,0.4);}
  .performance-close{background:#132437;color:var(--text-primary);border:1px solid rgba(79,238,241,0.25);}
  .performance-close:hover{background:rgba(79,238,241,0.12);border-color:var(--accent);}
  @media(max-width:650px){
    .performance-highlights{grid-template-columns:1fr;}
    .performance-actions{flex-direction:column-reverse;}
    .performance-action-btn{width:100%;}
  }


  /* ===== Max Exam Lab account architecture — Phase 1 ===== */
  .brand-row{justify-content:space-between;}
  .account-actions{display:flex;align-items:center;gap:8px;margin-left:auto;font-family:var(--font-body);}
  .account-btn{border:1px solid rgba(79,238,241,0.25);background:rgba(15,27,41,0.6);color:var(--text-primary);padding:8px 14px;border-radius:999px;font-size:11.5px;font-weight:700;letter-spacing:.04em;cursor:pointer;transition:all .15s ease;}
  .account-btn:hover{border-color:var(--accent);color:#ffffff;box-shadow:0 0 12px rgba(79,238,241,0.25);}
  .account-btn.primary{background:linear-gradient(135deg, var(--cyan-primary), var(--cyan-bright));color:#07131c;border:none;font-weight:800;}
  .account-btn.primary:hover{box-shadow:0 0 16px rgba(79,238,241,0.45);}
  .account-chip{font-size:11px;font-weight:700;color:var(--cyan-bright);}
  .auth-backdrop{position:fixed;inset:0;background:rgba(7,19,28,0.85);backdrop-filter:blur(10px);z-index:500;display:none;align-items:center;justify-content:center;padding:20px;}
  .auth-backdrop.show{display:flex;}
  .auth-card{width:min(430px,100%);background:#0f1b29;border:1px solid rgba(79,238,241,0.3);border-radius:18px;padding:28px;box-shadow:0 24px 70px rgba(0,0,0,.6), 0 0 24px rgba(79,238,241,0.15);}
  .auth-card h2{margin:0 0 6px;color:#ffffff;font-size:22px;}
  .auth-card p{font-size:13px;color:var(--text-muted);margin:0 0 18px;}
  .oauth-stack{display:grid;gap:10px;margin:18px 0 14px;}
  .oauth-btn{width:100%;min-height:46px;border:1px solid rgba(79,238,241,0.2);border-radius:10px;background:#132437;color:#ffffff;display:flex;align-items:center;justify-content:center;gap:11px;padding:10px 14px;font-family:var(--font-body);font-size:13px;font-weight:700;letter-spacing:0;cursor:pointer;transition:all .15s ease;}
  .oauth-btn:hover{transform:translateY(-1px);border-color:var(--accent);box-shadow:0 0 14px rgba(79,238,241,0.25);}
  .oauth-btn.apple{background:#07131c;color:#fff;border-color:rgba(79,238,241,0.2);}
  .oauth-btn.apple:hover{border-color:var(--accent);}
  .oauth-btn:disabled{opacity:.62;transform:none;box-shadow:none;}
  .oauth-icon{width:19px;height:19px;flex:0 0 19px;}
  .auth-divider{display:flex;align-items:center;gap:10px;margin:14px 0 4px;color:var(--text-muted);font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;}
  .auth-divider::before,.auth-divider::after{content:"";height:1px;background:rgba(79,238,241,0.16);flex:1;}
  .auth-field{display:grid;gap:5px;margin:12px 0;}
  .auth-field label{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);}
  .auth-field input{padding:11px;border:1px solid rgba(79,238,241,0.25);border-radius:8px;background:#132437;color:#ffffff;font:inherit;}
  .auth-field input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 10px rgba(79,238,241,0.25);}
  .auth-actions-row{display:flex;gap:8px;margin-top:16px;}
  .auth-error{font-size:11px;color:#ff6e85;min-height:16px;margin-top:8px;}
  @media(max-width:700px){
    .account-btn .wide-label{display:none;}
    .account-btn .short-label{display:inline-block;font-size:11px;font-weight:700;white-space:nowrap;}
    .account-actions{gap:6px;}
    .account-btn{padding:6px 11px;min-height:32px;display:inline-flex;align-items:center;justify-content:center;}
  }

  /* Modern unified account control */
  .profile-trigger{display:flex;align-items:center;gap:10px;border:1px solid rgba(79,238,241,0.25);border-radius:999px;background:#0f1b29;padding:5px 12px 5px 6px;color:var(--text-primary);cursor:pointer;box-shadow:0 4px 16px rgba(0,0,0,.3);transition:border-color .18s ease,box-shadow .18s ease,transform .18s ease;}
  .profile-trigger:hover,.profile-trigger[aria-expanded="true"]{border-color:var(--accent);box-shadow:0 0 16px rgba(79,238,241,.25);transform:translateY(-1px);}
  .profile-trigger svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:2;flex:none;}
  .profile-trigger-copy{display:grid;text-align:left;line-height:1.15;min-width:0;}
  .profile-trigger-copy strong{font:700 12px var(--font-body);color:#ffffff;white-space:nowrap;max-width:150px;overflow:hidden;text-overflow:ellipsis;}
  .profile-trigger-copy small{font:500 9px var(--font-body);color:var(--text-muted);margin-top:3px;}
  .profile-avatar{width:34px;height:34px;border-radius:50%;display:grid;place-items:center;flex:none;background:linear-gradient(145deg,#0c7572,#1ba39d);color:#fff;font:800 11px var(--font-body);letter-spacing:.04em;border:1.5px solid var(--cyan-bright);}
  .profile-avatar.large{width:46px;height:46px;font-size:14px;}
  .account-panel{position:fixed;right:24px;top:78px;z-index:450;width:min(390px,calc(100vw - 32px));background:#0f1b29;border:1px solid rgba(79,238,241,0.25);border-radius:20px;padding:18px;box-shadow:0 22px 65px rgba(0,0,0,.6);font-family:var(--font-body);display:none;}
  .account-panel.show{display:block;}
  .account-panel::before{content:"";position:absolute;right:28px;top:-7px;width:13px;height:13px;background:#0f1b29;border-left:1px solid rgba(79,238,241,0.25);border-top:1px solid rgba(79,238,241,0.25);transform:rotate(45deg);}
  .account-panel-head{display:flex;align-items:center;gap:12px;padding:2px 2px 14px;}
  .account-panel h3{font:800 16px var(--font-body);margin:0 0 3px;color:#ffffff;}
  .account-meta{font-size:11px;color:var(--text-muted);margin:0;word-break:break-word;}
  .account-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px;}
  .account-stat{border:1px solid rgba(79,238,241,0.18);border-radius:13px;padding:12px;background:#132437;}
  .account-stat strong{display:block;font:800 22px var(--font-body);color:var(--cyan-bright);}
  .account-stat span{font-size:10px;color:var(--text-muted);}
  .account-menu{display:grid;gap:7px;padding:4px 0 12px;}
  .account-menu-link{display:grid!important;grid-template-columns:34px 1fr auto;align-items:center;gap:10px;text-decoration:none;color:var(--text-primary);border:1px solid rgba(79,238,241,0.12);border-radius:13px;padding:10px;background:#132437;transition:background .16s,border-color .16s,transform .16s;}
  .account-menu-link:hover{background:rgba(79,238,241,0.12);border-color:var(--accent);transform:translateX(2px);}
  .account-menu-link .menu-icon{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;background:rgba(79,238,241,0.15);color:var(--cyan-bright);font-size:13px;}
  .account-menu-link strong,.account-menu-link small{display:block;}
  .account-menu-link strong{font-size:12px;margin-bottom:2px;color:#ffffff;}
  .account-menu-link small{font-size:10px;color:var(--text-muted);}
  .account-menu-link b{color:var(--accent);font-size:16px;}
  .account-menu-link.admin-link{display:none!important;}
  .account-menu-link.admin-link.show{display:grid!important;}
  .account-signout{width:100%;border:1px solid rgba(255,110,133,0.3);border-radius:11px;background:rgba(255,110,133,0.08);color:#ff8fa0;padding:10px;font:700 11px var(--font-body);cursor:pointer;transition:all .15s ease;}
  .account-signout:hover{background:var(--wrong);color:#07131c;border-color:var(--wrong);}
  @media(max-width:700px){.profile-trigger-copy small{display:none}.profile-trigger-copy strong{max-width:96px}.profile-trigger{padding-right:8px}.account-panel{right:12px;top:72px}}

/* Gap input warning */
.gap-input-warning{display:block;margin:3px 0 0;color:#b42318;font:700 11px/1.25 Inter,Arial,sans-serif}
  .gap-input.input-invalid{border-color:#b42318!important;box-shadow:0 0 0 2px rgba(180,35,24,.12)!important}

/* Standardized hierarchical navigation */
.context-nav-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:0 0 10px}
.context-nav-actions .context-back{margin:0}
.context-exit{color:var(--ink-soft)}
@media(max-width:640px){.context-nav-actions{width:100%}.context-nav-actions .context-back{flex:1;justify-content:center}}