:root {
      --navy: #1a2b4a;
      --navy-dark: #11203c;
      --navy-text: #1a2b4a;
      --green: #1D9E75;
      --green-soft: #e6f5ee;
      --red: #E24B4A;
      --red-soft: #fdecec;
      --bg: #f5f7fb;
      --card: #ffffff;
      --text: #1f2937;
      --text-soft: #6b7280;
      --border: #e5e7eb;
      --shadow: 0 1px 3px rgba(16,24,40,.06), 0 1px 2px rgba(16,24,40,.04);
    }
    [data-theme="dark"] {
      --bg: #0f1623;
      --card: #1a2236;
      --text: #e2e8f0;
      --text-soft: #94a3b8;
      --border: #2d3a52;
      --green-soft: #0d3326;
      --red-soft: #3a1515;
      --shadow: 0 1px 4px rgba(0,0,0,.4);
      --navy-text: #93b8e8;
    }
    [data-theme="dark"] body { background: var(--bg); }
    [data-theme="dark"] .option-btn { background: var(--card); border-color: var(--border); color: var(--text); }
    [data-theme="dark"] .option-btn:hover { background: #243048; }
    [data-theme="dark"] input, [data-theme="dark"] textarea, [data-theme="dark"] select { background: var(--card); color: var(--text); border-color: var(--border); }
    [data-theme="dark"] .home-card, [data-theme="dark"] .topic-row, [data-theme="dark"] .score-card { background: var(--card); }
    [data-theme="dark"] .explain { background: var(--card); border-color: var(--border); color: var(--text); }
    [data-theme="dark"] .topic-chip.selected { background: #1e2d4a; border-color: #4a6fa5; }
    [data-theme="dark"] .qtopic, [data-theme="dark"] .timer-pill { background: #1e2d4a; }
    [data-theme="dark"] .brk-score[style] { background: #1e2d4a !important; }
    [data-theme="dark"] .btn-ghost { background: var(--card); border-color: var(--border); }
    [data-theme="dark"] .paywall-wrap, [data-theme="dark"] .plan-card { background: var(--card); border-color: var(--border); color: var(--text); }
    [data-theme="dark"] .plan-price-big, [data-theme="dark"] .plan-title { color: var(--navy-text); }
    /* Print / PDF export */
    @media print {
      .sw-header, .header, #printHide, .note-wrap, .paywall-wrap, .sw-back-btn, .back-btn, .auth-btn, .header-actions, .sw-bottom-nav, .sw-drawer, .sw-overlay { display: none !important; }
      body { background: #fff !important; color: #000 !important; font-size: 12pt; }
      .print-sheet { display: block !important; }
      .print-q { page-break-inside: avoid; margin-bottom: 20pt; }
      .print-q h4 { font-size: 12pt; margin: 0 0 6pt; }
      .print-q p { font-size: 10pt; margin: 2pt 0; }
      .print-q .print-ans { color: #1D9E75; font-weight: 600; }
      .print-q .print-note { color: #1a2b4a; font-style: italic; margin-top: 4pt; }
      .print-header { margin-bottom: 20pt; border-bottom: 1pt solid #ccc; padding-bottom: 10pt; }
    }
    .print-sheet { display: none; }
    * { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
    html, body { margin: 0; padding: 0; }
    html { background: var(--navy); }
    body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--bg);
      color: var(--text);
      min-height: 100vh;
      -webkit-font-smoothing: antialiased;
      -webkit-tap-highlight-color: transparent;
      overscroll-behavior-y: contain;
      padding-bottom: env(safe-area-inset-bottom);
    }
    /* === SwipeLayout Header === */
    .sw-header {
      background: rgba(26,43,74,0.78);
      backdrop-filter: blur(18px) saturate(1.4);
      -webkit-backdrop-filter: blur(18px) saturate(1.4);
      color: #fff;
      padding: calc(13px + env(safe-area-inset-top)) 12px 13px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      position: sticky;
      top: 0;
      z-index: 30;
      box-shadow: 0 1px 0 rgba(255,255,255,.07), 0 4px 16px rgba(0,0,0,.18);
      gap: 8px;
      transition: transform .28s cubic-bezier(.4,0,.2,1), opacity .28s;
      will-change: transform;
    }
    .sw-header--hidden {
      transform: translateY(-110%);
      opacity: 0;
      pointer-events: none;
    }
    .sw-brand {
      flex: 1; display: flex; flex-direction: column;
      align-items: center; gap: 2px; min-width: 0;
    }
    .sw-brand-inner {
      display: flex; align-items: center; gap: 7px;
      font-size: 16px; font-weight: 800; letter-spacing: -.2px;
    }
    .sw-brand-mark {
      width: 22px; height: 22px; background: var(--green);
      border-radius: 6px; display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
    }
    .sw-tab-label {
      font-size: 10px; font-weight: 600; letter-spacing: .8px;
      text-transform: uppercase; color: rgba(255,255,255,.55);
    }
    .sw-hdr-icon-btn {
      background: rgba(255,255,255,.1); border: none; color: #fff;
      width: 36px; height: 36px; border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      font-size: 18px; cursor: pointer; flex-shrink: 0; transition: background .15s;
    }
    .sw-hdr-icon-btn:hover { background: rgba(255,255,255,.18); }
    .sw-back-btn {
      background: rgba(255,255,255,.1); border: none; color: #fff;
      padding: 7px 12px; border-radius: 10px;
      font: inherit; font-size: 13px; font-weight: 600;
      cursor: pointer; flex-shrink: 0; transition: background .15s; display: none;
    }
    .sw-back-btn:hover { background: rgba(255,255,255,.18); }
    .sw-hdr-right { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
    .sw-header .user-chip {
      display: flex; align-items: center; gap: 6px;
      padding: 3px 8px 3px 3px; background: rgba(255,255,255,.1);
      border-radius: 999px; font-size: 12px; font-weight: 500; max-width: 120px;
    }
    .sw-header .user-chip img,
    .sw-header .user-chip .user-avatar-fallback {
      width: 22px; height: 22px; border-radius: 50%; object-fit: cover;
      background: linear-gradient(135deg, #2c4a82, #1D9E75);
      display: flex; align-items: center; justify-content: center;
      font-size: 10px; font-weight: 700; color: #fff; flex-shrink: 0;
    }
    .sw-header .user-chip .user-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .sw-header .auth-btn {
      background: rgba(255,255,255,.1); color: #fff; border: none;
      padding: 6px 10px; border-radius: 8px;
      font: inherit; font-size: 12px; font-weight: 600; cursor: pointer; white-space: nowrap;
    }
    .sw-header .auth-btn.primary { background: var(--green); }
    .sw-header .auth-btn:hover { background: rgba(255,255,255,.2); }
    .sw-header .auth-btn.primary:hover { background: #168864; }
    @media (max-width: 380px) {
      .sw-header .user-chip { max-width: 78px; }
      .sw-header .user-chip .user-name { display: none; }
    }
    .container { max-width: 720px; margin: 0 auto; padding: 20px 16px 80px; }

    /* HOME */
    .hero { text-align: center; padding: 24px 8px 8px; }
    .hero h1 {
      font-size: 38px; line-height: 1.1; margin: 0 0 8px;
      color: var(--navy-text); font-weight: 800; letter-spacing: -.5px;
    }
    .hero p { color: var(--text-soft); margin: 0 0 20px; font-size: 16px; }
    .streak-chip {
      display: inline-flex; align-items: center; gap: 6px;
      background: #fff7e6; color: #b25b00;
      border: 1px solid #ffe2b8;
      font-size: 13px; font-weight: 600;
      padding: 6px 12px; border-radius: 999px;
      margin: 0 0 24px;
    }
    .streak-chip .flame { font-size: 14px; }
    .btn-primary {
      display: inline-block; width: 100%;
      background: var(--navy); color: #fff;
      padding: 16px 24px; border-radius: 12px;
      font: inherit; font-weight: 600; font-size: 16px;
      border: 0; cursor: pointer;
      transition: transform .05s, background .15s;
    }
    .btn-primary:hover { background: var(--navy-dark); }
    .btn-primary:active { transform: scale(.99); }
    .btn-ghost {
      display: inline-block; width: 100%;
      background: #fff; color: var(--navy-text);
      padding: 14px 24px; border-radius: 12px;
      font: inherit; font-weight: 600; font-size: 15px;
      border: 1px solid var(--border); cursor: pointer;
    }
    .btn-ghost:hover { background: #f9fafb; }
    .stats-row {
      display: grid; grid-template-columns: repeat(3, 1fr);
      gap: 10px; margin-top: 28px;
    }
    .stat {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 12px; padding: 16px 10px; text-align: center;
      box-shadow: var(--shadow);
    }
    .stat .num {
      font-size: 24px; font-weight: 700; color: var(--navy-text);
      line-height: 1;
    }
    .stat .lbl {
      font-size: 11px; text-transform: uppercase; letter-spacing: .5px;
      color: var(--text-soft); margin-top: 6px; font-weight: 500;
    }

    /* TOPICS */
    .section-title {
      font-size: 22px; font-weight: 700; color: var(--navy-text);
      margin: 0 0 6px;
    }
    .section-sub { color: var(--text-soft); margin: 0 0 20px; font-size: 14px; }
    .topic-grid {
      display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
    }
    .topic-card {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 14px; padding: 18px 16px;
      cursor: pointer; text-align: left;
      box-shadow: var(--shadow);
      transition: transform .08s, border-color .15s, box-shadow .15s;
      font: inherit; color: inherit;
      display: flex; flex-direction: column; gap: 10px;
      position: relative; min-height: 120px;
    }
    .topic-card:hover { border-color: var(--navy-text); transform: translateY(-1px); }
    .topic-card.full { grid-column: 1 / -1; }
    .topic-card .name {
      font-weight: 600; color: var(--navy-text); font-size: 15px; line-height: 1.3;
    }
    .topic-card .count { font-size: 13px; color: var(--text-soft); }
    .topic-card .badge {
      position: absolute; top: 12px; right: 12px;
      background: var(--green-soft); color: var(--green);
      font-size: 11px; font-weight: 600;
      padding: 4px 8px; border-radius: 999px;
    }
    .topic-card .badge.empty {
      background: #f3f4f6; color: var(--text-soft);
    }

    /* TOPIC SHEET */
    @keyframes tsFadeIn { from { opacity: 0; } to { opacity: 1; } }
    @keyframes tsSlideUp { from { transform: translateY(100%); } to { transform: translateY(0); } }
    .topic-sheet-overlay {
      position: fixed; inset: 0; z-index: 900;
      background: rgba(0,0,0,.45); display: flex; align-items: flex-end;
      animation: tsFadeIn .18s ease;
    }
    .topic-sheet {
      width: 100%; max-height: 90vh; background: var(--bg);
      border-radius: 20px 20px 0 0; display: flex; flex-direction: column;
      animation: tsSlideUp .25s cubic-bezier(.25,.8,.25,1);
      overflow: hidden;
    }
    .ts-header {
      display: flex; align-items: center; justify-content: space-between;
      padding: 18px 18px 14px; border-bottom: 1px solid var(--border);
      flex-shrink: 0;
    }
    .ts-header h3 { font-size: 17px; font-weight: 700; color: var(--navy-text); margin: 0; }
    .ts-close {
      background: #f3f4f6; border: none; border-radius: 50%;
      width: 32px; height: 32px; font-size: 16px; cursor: pointer;
      display: flex; align-items: center; justify-content: center; color: var(--text-soft);
    }
    .ts-body { overflow-y: auto; padding: 12px 16px 28px; flex: 1; }
    .ts-topic {
      padding: 14px 0; border-bottom: 1px solid var(--border);
    }
    .ts-topic:last-child { border-bottom: none; }
    .ts-topic-head {
      display: flex; align-items: center; gap: 12px; margin-bottom: 8px;
    }
    .ts-icon { font-size: 26px; flex-shrink: 0; line-height: 1; }
    .ts-info { flex: 1; }
    .ts-name { font-size: 15px; font-weight: 700; color: var(--navy-text); }
    .ts-counts { font-size: 12px; color: var(--text-soft); margin-top: 2px; font-weight: 500; }
    .ts-counts .free-count { color: var(--green); font-weight: 700; }
    .ts-counts .locked-count { color: #e07b30; font-weight: 700; }
    .ts-sample {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 10px; padding: 9px 12px; margin-bottom: 6px;
      font-size: 13px; color: var(--text); line-height: 1.45;
      position: relative;
    }
    .ts-sample.blurred { filter: blur(3.5px); user-select: none; pointer-events: none; }
    .ts-sample-label {
      font-size: 10px; font-weight: 700; color: var(--text-soft);
      text-transform: uppercase; letter-spacing: .05em; margin-bottom: 5px;
    }
    .ts-topic-actions { display: flex; gap: 8px; margin-top: 10px; }
    .ts-btn-start {
      flex: 1; background: var(--navy); color: #fff; border: none;
      border-radius: 10px; padding: 10px; font-size: 13px; font-weight: 600;
      cursor: pointer; font: inherit; transition: opacity .15s;
    }
    .ts-btn-start:hover { opacity: .88; }
    .ts-btn-unlock {
      flex: 1; background: #fff8ed; color: #e07b30; border: 1.5px solid #fcd59b;
      border-radius: 10px; padding: 10px; font-size: 13px; font-weight: 600;
      cursor: pointer; font: inherit;
    }
    .stat-btn {
      background: none; border: none; cursor: pointer; font: inherit;
      color: inherit; padding: 0; text-align: center; width: 100%;
    }
    .stat-btn .num { font-size: 22px; font-weight: 800; color: var(--navy-text); }
    .stat-btn .lbl { font-size: 11px; color: var(--text-soft); margin-top: 2px; }
    .stat-btn:active .num { color: var(--green); }

    /* QUIZ */
    .progress-wrap {
      background: #e5e7eb; height: 6px; border-radius: 999px; overflow: hidden;
      margin-bottom: 20px;
    }
    .progress-bar {
      height: 100%; background: var(--green); border-radius: 999px;
      transition: width .25s ease;
    }
    .qmeta {
      display: flex; align-items: center; justify-content: space-between;
      margin-bottom: 14px; gap: 10px;
    }
    .qmeta-right { display: flex; align-items: center; gap: 8px; }
    .qnum { font-weight: 600; color: var(--navy-text); font-size: 14px; }
    .qtopic {
      background: #eef2f8; color: var(--navy-text);
      font-size: 11px; font-weight: 600; text-transform: uppercase;
      letter-spacing: .5px; padding: 4px 10px; border-radius: 999px;
    }
    .star-btn {
      background: transparent; border: 0; cursor: pointer;
      padding: 4px 6px; font-size: 20px; line-height: 1;
      color: #cbd5e1; transition: color .15s, transform .1s;
    }
    .star-btn:hover { color: #f5b400; }
    .star-btn:active { transform: scale(.9); }
    .star-btn.on { color: #f5b400; }
    .topic-card.bookmark .badge { background: #fff3cd; color: #b25b00; }
    .topic-card.bookmark .name { color: #b25b00; }
    .diff-badge {
      font-size: 11px; font-weight: 700; text-transform: uppercase;
      letter-spacing: .5px; padding: 4px 9px; border-radius: 999px;
      line-height: 1;
    }
    .diff-easy { background: #e6f5ee; color: #0f7a55; }
    .diff-medium { background: #fff3cd; color: #92560a; }
    .diff-hard { background: #fde2e2; color: #a32424; }
    .timer-pill {
      font-size: 12px; font-weight: 700;
      padding: 4px 9px; border-radius: 999px;
      background: #eef2f8; color: var(--navy-text);
      font-variant-numeric: tabular-nums;
      line-height: 1;
    }
    .timer-pill.warn { background: #fff3cd; color: #92560a; }
    .timer-pill.crit { background: #fde2e2; color: #a32424; }
    .exam-verdict {
      display: inline-block;
      font-size: 13px; font-weight: 800; letter-spacing: 1.5px;
      padding: 6px 14px; border-radius: 999px;
      margin-bottom: 14px;
    }
    .exam-verdict.pass { background: var(--green-soft); color: var(--green); }
    .exam-verdict.fail { background: var(--red-soft); color: var(--red); }
    .search-bar {
      position: relative; margin-bottom: 14px;
    }
    .search-bar input {
      width: 100%; box-sizing: border-box;
      padding: 14px 16px; padding-right: 40px;
      font-size: 15px; font-family: inherit;
      background: var(--card); color: var(--text);
      border: 1px solid var(--border); border-radius: 12px;
      box-shadow: var(--shadow);
      outline: none; transition: border-color .15s, box-shadow .15s;
    }
    .search-bar input:focus {
      border-color: var(--navy-text);
      box-shadow: 0 0 0 3px rgba(26,43,74,.12);
    }
    .search-clear {
      position: absolute; right: 10px; top: 50%; transform: translateY(-50%);
      background: transparent; border: 0; cursor: pointer;
      font-size: 20px; color: var(--text-soft); padding: 4px 8px;
      line-height: 1; border-radius: 6px;
    }
    .search-clear:hover { color: var(--navy-text); background: #f1f5f9; }
    .search-meta {
      font-size: 13px; color: var(--text-soft);
      margin-bottom: 10px;
    }
    .search-list {
      display: flex; flex-direction: column; gap: 10px;
      margin-bottom: 80px;
    }
    .search-item {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 12px; padding: 14px;
      box-shadow: var(--shadow);
    }
    .search-item .row1 {
      display: flex; gap: 8px; align-items: center;
      margin-bottom: 8px; flex-wrap: wrap;
    }
    .search-item .stem { font-size: 14px; color: var(--text); line-height: 1.45; }
    .search-item mark { background: #fff3a8; color: inherit; padding: 0 2px; border-radius: 2px; }
    .search-empty {
      text-align: center; padding: 40px 20px;
      color: var(--text-soft); font-size: 14px;
    }
    .search-cta {
      position: sticky; bottom: 12px;
      background: var(--card); padding: 10px;
      border: 1px solid var(--border); border-radius: 12px;
      box-shadow: 0 6px 20px rgba(0,0,0,.10);
      margin-top: 14px;
    }
    .btn-ghost:disabled {
      opacity: .55; cursor: not-allowed;
    }
    .dc-strip-wrap {
      margin-top: 12px; margin-bottom: 4px;
      padding: 10px 12px;
      background: var(--card); border: 1px solid var(--border);
      border-radius: 12px; box-shadow: var(--shadow);
    }
    .dc-label {
      font-size: 11px; font-weight: 600; text-transform: uppercase;
      color: var(--text-soft); letter-spacing: .5px;
      margin-bottom: 8px;
    }
    .dc-strip {
      display: grid; grid-template-columns: repeat(14, 1fr);
      gap: 4px;
    }
    .dc-cell {
      aspect-ratio: 1 / 1;
      display: flex; align-items: center; justify-content: center;
      font-size: 10px; font-weight: 600;
      border-radius: 5px;
      background: #f1f5f9; color: var(--text-soft);
      border: 1px solid transparent;
    }
    .dc-correct { background: var(--green); color: #fff; }
    .dc-wrong { background: var(--red); color: #fff; }
    .dc-empty { background: #f1f5f9; color: var(--text-soft); }
    .dc-today { border-color: var(--navy-text); box-shadow: 0 0 0 2px rgba(26,43,74,.15); }
    .search-header {
      display: flex; align-items: center; justify-content: space-between;
      gap: 10px; margin-bottom: 8px;
    }
    .add-q-btn {
      background: var(--navy); color: #fff; border: 0;
      padding: 8px 14px; border-radius: 8px; font-size: 13px;
      font-weight: 600; cursor: pointer; font-family: inherit;
    }
    .add-q-btn:hover { background: #124039; }
    .custom-badge {
      font-size: 10px; font-weight: 700; text-transform: uppercase;
      letter-spacing: .5px; padding: 3px 7px; border-radius: 999px;
      background: #e8e6ff; color: #4338ca;
    }
    .modal-overlay {
      position: fixed; inset: 0;
      background: rgba(15,23,42,.55);
      display: flex; align-items: flex-start; justify-content: center;
      padding: 30px 16px; overflow-y: auto;
      z-index: 1000;
    }
    .modal-card {
      background: var(--card); width: 100%; max-width: 560px;
      border-radius: 14px; padding: 22px;
      box-shadow: 0 20px 50px rgba(0,0,0,.25);
    }
    .modal-card h3 {
      margin: 0 0 4px; color: var(--navy-text); font-size: 20px;
    }
    .modal-card .modal-sub {
      color: var(--text-soft); font-size: 13px; margin-bottom: 18px;
    }
    .form-row { margin-bottom: 14px; }
    .form-row label {
      display: block; font-size: 12px; font-weight: 600;
      text-transform: uppercase; letter-spacing: .5px;
      color: var(--text-soft); margin-bottom: 6px;
    }
    .form-row input[type="text"],
    .form-row textarea,
    .form-row select {
      width: 100%; box-sizing: border-box;
      padding: 10px 12px; font-size: 14px; font-family: inherit;
      background: #fff; color: var(--text);
      border: 1px solid var(--border); border-radius: 8px;
      outline: none; transition: border-color .15s, box-shadow .15s;
    }
    .form-row input[type="text"]:focus,
    .form-row textarea:focus,
    .form-row select:focus {
      border-color: var(--navy-text);
      box-shadow: 0 0 0 3px rgba(26,43,74,.12);
    }
    .form-row textarea { resize: vertical; min-height: 70px; line-height: 1.4; }
    .form-grid-2 {
      display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
    }
    .opt-row {
      display: flex; align-items: center; gap: 8px; margin-bottom: 8px;
    }
    .opt-row .opt-letter {
      width: 26px; height: 26px;
      display: flex; align-items: center; justify-content: center;
      font-weight: 700; color: var(--navy-text);
      background: #eef2f8; border-radius: 6px;
      flex-shrink: 0; font-size: 13px;
    }
    .opt-row input { flex: 1; }
    .modal-actions {
      display: flex; gap: 10px; margin-top: 18px;
    }
    .modal-actions button { flex: 1; }
    .form-error {
      background: var(--red-soft); color: var(--red);
      padding: 10px 12px; border-radius: 8px;
      font-size: 13px; margin-bottom: 12px;
    }
    .install-banner {
      position: fixed; left: 12px; right: 12px;
      bottom: calc(12px + env(safe-area-inset-bottom));
      background: var(--navy); color: #fff;
      border-radius: 14px; padding: 14px 14px 14px 16px;
      display: flex; align-items: center; gap: 12px;
      box-shadow: 0 10px 30px rgba(15,23,42,.25);
      z-index: 900; max-width: 560px; margin: 0 auto;
      animation: slideUp .25s ease-out;
    }
    @keyframes slideUp {
      from { transform: translateY(20px); opacity: 0; }
      to { transform: translateY(0); opacity: 1; }
    }
    .install-banner .ib-icon {
      width: 38px; height: 38px; flex-shrink: 0;
      background: var(--green); border-radius: 9px;
      display: flex; align-items: center; justify-content: center;
      font-weight: 800; font-size: 18px;
    }
    .install-banner .ib-text { flex: 1; line-height: 1.3; min-width: 0; }
    .install-banner .ib-title { font-weight: 700; font-size: 14px; }
    .install-banner .ib-sub { font-size: 12px; opacity: .8; margin-top: 2px; }
    .install-banner .ib-cta {
      background: var(--green); color: #fff; border: 0;
      padding: 9px 14px; border-radius: 8px; font-size: 13px;
      font-weight: 700; cursor: pointer; font-family: inherit;
      flex-shrink: 0;
    }
    .install-banner .ib-cta:hover { filter: brightness(1.08); }
    .install-banner .ib-close {
      background: transparent; border: 0; color: rgba(255,255,255,.7);
      font-size: 22px; line-height: 1; cursor: pointer; padding: 0 4px;
      flex-shrink: 0;
    }
    .ios-steps { margin: 4px 0 0; padding-left: 20px; line-height: 1.6; }
    .ios-steps li { font-size: 14px; color: var(--text); }
    .ios-share-icon {
      display: inline-block; vertical-align: -3px;
      width: 16px; height: 16px;
      background: var(--navy); color: #fff;
      border-radius: 4px; text-align: center;
      font-size: 11px; line-height: 16px; font-weight: 700;
      margin: 0 2px;
    }
    .share-row {
      display: flex; align-items: center; gap: 10px;
      padding: 10px 0; border-bottom: 1px solid var(--border);
    }
    .share-row:last-child { border-bottom: 0; }
    .share-row .sr-mark {
      width: 22px; height: 22px; border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0; font-size: 13px; font-weight: 700; color: #fff;
    }
    .sr-mark.ok { background: var(--green); }
    .sr-mark.no { background: var(--red); }
    .share-row .sr-stem {
      flex: 1; min-width: 0;
      font-size: 13px; color: var(--text); line-height: 1.35;
      overflow: hidden; text-overflow: ellipsis;
      display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
    }
    .share-row .sr-btn {
      flex-shrink: 0;
      background: var(--navy); color: #fff; border: 0;
      padding: 7px 12px; border-radius: 7px;
      font-size: 12px; font-weight: 600; cursor: pointer;
      font-family: inherit;
    }
    .share-row .sr-btn:hover { background: #124039; }
    .toast {
      position: fixed; left: 50%; bottom: calc(24px + env(safe-area-inset-bottom));
      transform: translateX(-50%);
      background: var(--navy); color: #fff;
      padding: 10px 18px; border-radius: 999px;
      font-size: 13px; font-weight: 600;
      box-shadow: 0 6px 20px rgba(15,23,42,.3);
      z-index: 1100;
      animation: toastIn .2s ease-out, toastOut .25s ease-in 1.8s forwards;
    }
    @keyframes toastIn  { from { opacity: 0; transform: translate(-50%, 10px); } to { opacity: 1; transform: translate(-50%, 0); } }
    @keyframes toastOut { to { opacity: 0; transform: translate(-50%, 10px); } }
    @keyframes spin { to { transform: rotate(360deg); } }
    .q-loading { display:flex;flex-direction:column;align-items:center;justify-content:center;height:60vh;gap:16px; }
    .q-loading .spin { width:44px;height:44px;border:4px solid #e2e8f0;border-top-color:var(--green);border-radius:50%;animation:spin .8s linear infinite; }
    .shared-banner {
      background: var(--green-soft); color: #14583e;
      border-left: 4px solid var(--green);
      padding: 12px 14px; border-radius: 10px;
      margin-bottom: 14px; font-size: 13px; line-height: 1.4;
    }
    .mode-toggle {
      display: flex; align-items: center; justify-content: space-between;
      gap: 12px; padding: 12px 14px;
      background: var(--card); border: 1px solid var(--border);
      border-radius: 12px; margin-bottom: 16px;
      box-shadow: var(--shadow);
    }
    .mode-toggle .label { display: flex; flex-direction: column; gap: 2px; }
    .mode-toggle .label .t { font-weight: 600; color: var(--navy-text); font-size: 14px; }
    .mode-toggle .label .s { font-size: 12px; color: var(--text-soft); }
    .switch {
      position: relative; display: inline-block;
      width: 42px; height: 24px; flex-shrink: 0;
    }
    .switch input { opacity: 0; width: 0; height: 0; }
    .slider {
      position: absolute; cursor: pointer; inset: 0;
      background: #cbd5e1; border-radius: 999px;
      transition: background .2s;
    }
    .slider::before {
      content: ""; position: absolute;
      height: 18px; width: 18px;
      left: 3px; top: 3px;
      background: #fff; border-radius: 50%;
      transition: transform .2s;
      box-shadow: 0 1px 2px rgba(0,0,0,.15);
    }
    .switch input:checked + .slider { background: var(--green); }
    .switch input:checked + .slider::before { transform: translateX(18px); }
    .slow-row {
      display: flex; justify-content: space-between; align-items: flex-start;
      gap: 12px; padding: 10px 0; border-bottom: 1px solid #f3f4f6;
      font-size: 13px;
    }
    .slow-row:last-child { border-bottom: 0; }
    .slow-row .qtxt { color: var(--text); flex: 1; line-height: 1.4; }
    .slow-row .ttime {
      flex-shrink: 0; font-weight: 600; color: var(--navy-text);
      font-variant-numeric: tabular-nums; font-size: 13px;
    }
    .qcard {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 14px; padding: 22px;
      box-shadow: var(--shadow);
    }
    .q-image {
      display: block; width: 100%; max-height: 260px;
      object-fit: contain; border-radius: 10px;
      margin: 0 0 16px; background: #f1f5f9;
    }
    .qtext {
      font-size: 17px; line-height: 1.5; color: var(--text);
      font-weight: 500; margin: 0 0 20px;
    }
    .options { display: flex; flex-direction: column; gap: 10px; }
    .opt {
      background: #fff; border: 1.5px solid var(--border);
      border-radius: 10px; padding: 14px 16px;
      text-align: left; cursor: pointer;
      font: inherit; font-size: 15px; color: var(--text);
      transition: border-color .15s, background .15s;
      display: flex; align-items: flex-start; gap: 12px;
      line-height: 1.4;
    }
    .opt:not(:disabled):hover { border-color: var(--navy-text); background: #f8fafc; }
    .opt:disabled { cursor: default; }
    .opt .letter {
      font-weight: 700; color: var(--navy-text); flex-shrink: 0;
      width: 22px;
    }
    .opt.correct {
      background: var(--green-soft); border-color: var(--green); color: #0f5c44;
    }
    .opt.correct .letter { color: var(--green); }
    .opt.wrong {
      background: var(--red-soft); border-color: var(--red); color: #8a2a2a;
    }
    .opt.wrong .letter { color: var(--red); }
    .explain {
      margin-top: 18px; padding: 14px 16px;
      background: #f8fafc; border-left: 3px solid var(--navy);
      border-radius: 8px; font-size: 14px; line-height: 1.55;
      color: #374151;
    }
    .explain b { color: var(--navy-text); display: block; margin-bottom: 4px; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; }
    .book-ref { margin-top: 8px; font-size: 12px; font-weight: 600; color: var(--navy-text); background: #eef2f7; border-radius: 6px; padding: 6px 10px; display: inline-block; }
    .dl-btn { position: absolute; right: 10px; top: 10px; background: #fff; border: 1px solid var(--border); border-radius: 50%; width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 2; box-shadow: 0 1px 3px rgba(0,0,0,.08); font-size: 14px; transition: transform .15s, color .15s; }
    .dl-btn:hover { transform: scale(1.1); }
    [data-theme="dark"] .book-ref { background: #1e2d4a; }
    .next-wrap { margin-top: 20px; }

    /* AI CHAT */
    .ai-chat-wrap { margin-top: 14px; border-radius: 12px; overflow: hidden; border: 1.5px solid #e0e7ff; background: #f8f9ff; }
    .ai-chat-header { display: flex; align-items: center; gap: 8px; padding: 10px 14px; background: linear-gradient(135deg, #1a2b4a, #2d4a7a); cursor: pointer; user-select: none; }
    .ai-chat-header svg { flex-shrink: 0; }
    .ai-chat-header span { color: #fff; font-size: 13px; font-weight: 700; flex: 1; }
    .ai-chat-header .ai-badge { font-size: 10px; font-weight: 700; background: #1D9E75; color: #fff; padding: 2px 7px; border-radius: 99px; letter-spacing: .3px; }
    .ai-chat-body { display: none; flex-direction: column; max-height: 480px; }
    .ai-chat-body.open { display: flex; }
    .ai-messages { flex: 1; overflow-y: auto; padding: 12px 14px; display: flex; flex-direction: column; gap: 10px; }
    .ai-msg { font-size: 13.5px; line-height: 1.6; max-width: 92%; }
    .ai-msg.user { align-self: flex-end; background: #1a2b4a; color: #fff; padding: 8px 12px; border-radius: 14px 14px 4px 14px; }
    .ai-msg.assistant { align-self: flex-start; background: #fff; border: 1px solid #e0e7ff; padding: 10px 12px; border-radius: 4px 14px 14px 14px; color: #1f2937; }
    .ai-msg.assistant .ai-cursor { display: inline-block; width: 2px; height: 13px; background: #1D9E75; margin-left: 2px; animation: blink .7s step-end infinite; vertical-align: middle; }
    .ai-input-row { display: flex; gap: 8px; padding: 10px 12px; border-top: 1px solid #e0e7ff; background: #fff; }
    .ai-input-row textarea { flex: 1; border: 1.5px solid #e0e7ff; border-radius: 10px; padding: 8px 10px; font-size: 13px; font-family: inherit; resize: none; line-height: 1.4; height: 38px; max-height: 100px; outline: none; color: #1f2937; background: #f8f9ff; transition: border-color .2s; }
    .ai-input-row textarea:focus { border-color: #1a2b4a; }
    .ai-send-btn { flex-shrink: 0; width: 38px; height: 38px; border-radius: 10px; border: none; background: #1D9E75; color: #fff; cursor: pointer; display: flex; align-items: center; justify-content: center; transition: opacity .15s; }
    .ai-send-btn:disabled { opacity: .45; cursor: not-allowed; }
    [data-theme="dark"] .ai-chat-wrap { border-color: #2d3a52; background: #1a2332; }
    [data-theme="dark"] .ai-msg.assistant { background: #1e2d40; border-color: #2d3a52; color: #e5e7eb; }
    [data-theme="dark"] .ai-input-row { background: #1a2332; border-color: #2d3a52; }
    [data-theme="dark"] .ai-input-row textarea { background: #1e2d40; border-color: #2d3a52; color: #e5e7eb; }
    @keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }

    /* RESULTS */
    .score-card {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 16px; padding: 28px 22px; text-align: center;
      box-shadow: var(--shadow); margin-bottom: 20px;
    }
    .score-num {
      font-size: 52px; font-weight: 800; color: var(--navy-text);
      line-height: 1; letter-spacing: -1px;
    }
    .score-pct {
      font-size: 18px; color: var(--green); font-weight: 600;
      margin-top: 6px;
    }
    .score-msg {
      margin-top: 12px; color: var(--text-soft); font-size: 15px;
    }
    .breakdown {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 14px; padding: 18px; box-shadow: var(--shadow);
      margin-bottom: 20px;
    }
    .breakdown h3 {
      margin: 0 0 14px; font-size: 14px; text-transform: uppercase;
      letter-spacing: .5px; color: var(--text-soft); font-weight: 600;
    }
    .brk-row {
      display: flex; justify-content: space-between; align-items: center;
      padding: 10px 0; border-bottom: 1px solid #f3f4f6;
      font-size: 14px;
    }
    .brk-row:last-child { border-bottom: 0; }
    .brk-name { color: var(--navy-text); font-weight: 500; }
    .brk-score {
      font-weight: 600; padding: 4px 10px; border-radius: 999px; font-size: 13px;
    }
    .results-actions { display: flex; flex-direction: column; gap: 10px; }

    @media (min-width: 540px) {
      .topic-grid { grid-template-columns: 1fr 1fr 1fr; }
      .topic-card.full { grid-column: 1 / -1; }
      .results-actions { flex-direction: row; }
      .results-actions > * { flex: 1; }
    }
    @media (max-width: 360px) {
      .hero h1 { font-size: 30px; }
      .stat .num { font-size: 20px; }
    }

    /* COUNTDOWN */
    .countdown-widget {
      background: linear-gradient(135deg, var(--navy), #2c4a82);
      color: #fff; border-radius: 14px; padding: 14px 18px;
      display: flex; align-items: center; justify-content: space-between;
      margin-bottom: 12px; gap: 12px;
    }
    .countdown-widget .cw-label { font-size: 12px; opacity: .7; text-transform: uppercase; letter-spacing: .5px; }
    .countdown-widget .cw-days { font-size: 28px; font-weight: 800; line-height: 1; }
    .countdown-widget .cw-sub { font-size: 11px; opacity: .6; margin-top: 2px; }
    .countdown-widget .cw-set { font-size: 12px; background: rgba(255,255,255,.15); border: 0; color: #fff; padding: 6px 12px; border-radius: 8px; cursor: pointer; font: inherit; }
    .countdown-widget .cw-set:hover { background: rgba(255,255,255,.25); }
    .exam-date-form { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px; margin-bottom: 12px; }
    .exam-date-form label { font-size: 13px; font-weight: 600; color: var(--navy-text); display: block; margin-bottom: 8px; }
    .exam-date-form input[type="date"] { width: 100%; padding: 10px 12px; border: 1.5px solid var(--border); border-radius: 8px; font: inherit; font-size: 14px; color: var(--navy-text); background: #fff; box-sizing: border-box; }
    .exam-date-form .form-actions { display: flex; gap: 8px; margin-top: 10px; }
    .exam-date-form .form-actions button { flex: 1; padding: 8px; border-radius: 8px; border: 0; font: inherit; font-size: 13px; font-weight: 600; cursor: pointer; }
    .exam-date-form .form-actions .save { background: var(--navy); color: #fff; }
    .exam-date-form .form-actions .cancel { background: var(--bg); color: var(--text-soft); border: 1px solid var(--border); }

    /* HEATMAP */
    .progress-chart-card { background: var(--card); border: 1.5px solid var(--border); border-radius: 14px; padding: 14px 16px; margin-bottom: 12px; }
    .progress-chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
    .progress-chart-title { font-size: 12px; font-weight: 700; color: var(--text-soft); text-transform: uppercase; letter-spacing: .5px; }
    .progress-chart-legend { display: flex; gap: 12px; align-items: center; }
    .pc-legend-item { display: flex; align-items: center; gap: 5px; font-size: 11px; color: var(--text-soft); }
    .pc-legend-bar { width: 10px; height: 10px; border-radius: 2px; background: var(--navy); display: inline-block; }
    .pc-legend-line { width: 14px; height: 2.5px; background: #f59e0b; border-radius: 2px; display: inline-block; }
    .progress-chart-svg { display: block; width: 100%; overflow: visible; }
    .progress-chart-stats { display: flex; gap: 20px; margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--border); }
    .pcs-item .pcs-val { font-size: 20px; font-weight: 800; color: var(--navy-text); line-height: 1; }
    .pcs-item .pcs-lbl { font-size: 11px; color: var(--text-soft); margin-top: 2px; }
    [data-theme="dark"] .progress-chart-card { background: var(--card); border-color: var(--border); }

    /* ANALYTICS */
    .analytics-section { margin-bottom: 28px; }
    .analytics-section h3 { font-size: 15px; font-weight: 700; color: var(--navy-text); margin: 0 0 14px; }
    .analytics-stat-row { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; margin-bottom: 20px; }
    .analytics-stat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 12px; text-align: center; }
    .analytics-stat .a-num { font-size: 26px; font-weight: 800; color: var(--navy-text); }
    .analytics-stat .a-lbl { font-size: 11px; color: var(--text-soft); text-transform: uppercase; letter-spacing: .4px; margin-top: 2px; }
    .topic-bar-row { margin-bottom: 10px; }
    .topic-bar-label { display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 4px; }
    .topic-bar-label .tbl-name { font-weight: 600; color: var(--navy-text); }
    .topic-bar-label .tbl-pct { color: var(--text-soft); }
    .topic-bar-track { background: #e5e7eb; border-radius: 999px; height: 8px; overflow: hidden; }
    .topic-bar-fill { height: 100%; border-radius: 999px; background: var(--green); transition: width .4s; }
    .sm2-stats { display: flex; gap: 10px; flex-wrap: wrap; }
    .sm2-chip { padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; }
    .sm2-chip.mastered { background: #d1fae5; color: #065f46; }
    .sm2-chip.learning { background: #fef9c3; color: #713f12; }
    .sm2-chip.struggling { background: #fee2e2; color: #7f1d1d; }

    /* FLASHCARD */
    .flashcard-wrap { perspective: 1000px; margin-bottom: 24px; }
    .flashcard {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 20px; padding: 32px 24px;
      box-shadow: var(--shadow); min-height: 200px;
      display: flex; align-items: center; justify-content: center;
      text-align: center; cursor: pointer; user-select: none;
      position: relative; transition: box-shadow .15s;
    }
    .flashcard:hover { box-shadow: 0 6px 24px rgba(26,43,74,.13); }
    .flashcard .fc-hint { position: absolute; top: 14px; left: 50%; transform: translateX(-50%); font-size: 11px; color: var(--text-soft); white-space: nowrap; }
    .flashcard .fc-question { font-size: 17px; font-weight: 600; color: var(--navy-text); line-height: 1.5; }
    .flashcard .fc-answer { display: none; }
    .flashcard.revealed .fc-question { display: none; }
    .flashcard.revealed .fc-answer { display: block; }
    .flashcard.revealed { border-color: var(--green); }
    .flashcard .fc-answer .fc-correct { font-size: 15px; font-weight: 700; color: var(--green); margin-bottom: 8px; }
    .flashcard .fc-answer .fc-explain { font-size: 14px; color: #374151; line-height: 1.5; }
    .fc-rating { display: flex; gap: 10px; margin-top: 4px; }
    .fc-rating button { flex: 1; padding: 12px 8px; border-radius: 12px; border: 0; font: inherit; font-size: 13px; font-weight: 700; cursor: pointer; }
    .fc-rating .fc-knew { background: #d1fae5; color: #065f46; }
    .fc-rating .fc-struggled { background: #fef9c3; color: #713f12; }
    .fc-rating .fc-wrong { background: #fee2e2; color: #7f1d1d; }
    .fc-rating button:hover { opacity: .85; }
    .fc-progress-label { font-size: 12px; color: var(--text-soft); text-align: center; margin-bottom: 10px; }

    /* LEADERBOARD */
    .lb-tabs { display: flex; gap: 0; background: var(--bg); border: 1.5px solid var(--border); border-radius: 10px; overflow: hidden; margin-bottom: 16px; }
    .lb-tab { flex: 1; padding: 9px; text-align: center; font-size: 13px; font-weight: 600; color: var(--text-soft); cursor: pointer; border: 0; background: transparent; font: inherit; }
    .lb-tab.active { background: var(--navy); color: #fff; }
    .lb-row {
      display: flex; align-items: center; gap: 12px;
      padding: 12px 14px; background: var(--card);
      border: 1px solid var(--border); border-radius: 12px; margin-bottom: 8px;
    }
    .lb-row.is-me { border-color: var(--green); background: #f0fdf4; }
    .lb-rank { font-size: 15px; font-weight: 800; color: var(--navy-text); min-width: 24px; text-align: center; }
    .lb-rank.gold { color: #d97706; }
    .lb-rank.silver { color: #6b7280; }
    .lb-rank.bronze { color: #92400e; }
    .lb-avatar { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; flex-shrink: 0; background: linear-gradient(135deg,#2c4a82,#1D9E75); display:flex;align-items:center;justify-content:center;font-size:14px;font-weight:700;color:#fff; }
    .lb-avatar img { width: 36px; height: 36px; border-radius: 50%; object-fit: cover; }
    .lb-name { flex: 1; font-weight: 600; font-size: 14px; color: var(--navy-text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
    .lb-metric { font-size: 14px; font-weight: 700; color: var(--text-soft); text-align: right; }
    .lb-metric .lbm-val { font-size: 17px; color: var(--navy-text); }
    .lb-metric .lbm-lbl { font-size: 11px; text-transform: uppercase; letter-spacing: .4px; }
    .lb-loading { text-align: center; padding: 40px; color: var(--text-soft); }
    .lb-empty { text-align: center; padding: 40px; color: var(--text-soft); font-size: 14px; }

    /* ── Flag button ── */
    .flag-btn { background: none; border: none; font-size: 18px; cursor: pointer; opacity: .45; padding: 4px; line-height: 1; transition: opacity .15s, transform .15s; }
    .flag-btn:hover { opacity: .8; }
    .flag-btn.on { opacity: 1; transform: scale(1.15); }

    /* ── Share button ── */
    .share-btn { background: none; border: none; font-size: 16px; cursor: pointer; opacity: .45; padding: 4px; line-height: 1; transition: opacity .15s; }
    .share-btn:hover { opacity: .9; }
    .share-copied { font-size: 11px; color: var(--green); font-weight: 700; margin-left: 2px; animation: fadeIn .2s; }

    /* ── Question Notes ── */
    .note-wrap { margin-top: 14px; }
    .note-wrap textarea {
      width: 100%; box-sizing: border-box; border: 1.5px solid var(--border);
      border-radius: 8px; padding: 10px 12px; font: inherit; font-size: 14px;
      color: var(--text); background: #fafafa; resize: vertical; min-height: 64px;
      transition: border-color .15s;
    }
    .note-wrap textarea:focus { outline: none; border-color: var(--navy-text); }
    .note-label { font-size: 12px; font-weight: 600; color: var(--text-soft); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .4px; }
    .note-saved { font-size: 11px; color: var(--green); font-weight: 600; margin-top: 4px; min-height: 16px; }

    /* ── Similar questions ── */
    .similar-wrap { margin-top: 16px; border-top: 1px solid var(--border); padding-top: 14px; }
    .similar-title { font-size: 13px; font-weight: 700; color: var(--navy-text); margin-bottom: 10px; }
    .similar-row { display: flex; align-items: flex-start; gap: 10px; background: var(--bg); border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; margin-bottom: 8px; cursor: pointer; transition: border-color .15s; }
    .similar-row:hover { border-color: var(--navy-text); }
    .similar-q { font-size: 13px; color: var(--text); flex: 1; line-height: 1.4; }
    .similar-arrow { color: var(--navy-text); font-weight: 700; flex-shrink: 0; }

    /* ── Custom quiz builder ── */
    .builder-section { margin-bottom: 20px; }
    .builder-label { font-size: 13px; font-weight: 700; color: var(--navy-text); margin-bottom: 10px; }
    .topic-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
    .topic-chip { display: flex; align-items: center; gap: 8px; background: var(--card); border: 1.5px solid var(--border); border-radius: 8px; padding: 8px 12px; cursor: pointer; font-size: 13px; font-weight: 500; transition: border-color .15s, background .15s; user-select: none; }
    .topic-chip.selected { border-color: var(--navy-text); background: #eef1f7; color: var(--navy-text); font-weight: 600; }
    .topic-chip input[type=checkbox] { width: 15px; height: 15px; accent-color: var(--navy-text); flex-shrink: 0; }
    .count-row { display: flex; align-items: center; gap: 12px; }
    .count-row input[type=range] { flex: 1; accent-color: var(--navy-text); }
    .count-val { font-size: 20px; font-weight: 800; color: var(--navy-text); min-width: 30px; text-align: center; }
    .toggle-row { display: flex; align-items: center; justify-content: space-between; background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px 16px; }
    .toggle-lbl { font-size: 14px; font-weight: 600; color: var(--text); }
    .toggle-sub { font-size: 12px; color: var(--text-soft); }
    .toggle-switch { position: relative; width: 44px; height: 24px; }
    .toggle-switch input { opacity: 0; width: 0; height: 0; }
    .slider { position: absolute; inset: 0; background: #d1d5db; border-radius: 24px; cursor: pointer; transition: background .2s; }
    .slider:before { content: ""; position: absolute; width: 18px; height: 18px; left: 3px; top: 3px; background: #fff; border-radius: 50%; transition: transform .2s; }
    .toggle-switch input:checked + .slider { background: var(--navy); }
    .toggle-switch input:checked + .slider:before { transform: translateX(20px); }

    /* ── Race mode ── */
    .race-banner { background: var(--navy); color: #fff; border-radius: 12px; padding: 12px 16px; display: flex; justify-content: space-between; align-items: center; margin-bottom: 14px; }
    .race-count { font-size: 26px; font-weight: 800; }
    .race-label { font-size: 12px; opacity: .7; text-transform: uppercase; letter-spacing: .5px; }
    .race-timer { font-size: 22px; font-weight: 800; color: #fbbf24; }
    .race-done { text-align: center; padding: 30px 0; }
    .race-score { font-size: 52px; font-weight: 900; color: var(--navy-text); }
    .race-sub { color: var(--text-soft); font-size: 15px; margin: 8px 0 20px; }

    /* ── Milestone badges ── */
    .badge-grid { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 10px; }
    /* ---- Paywall ---- */
    .paywall-wrap { max-width: 480px; margin: 0 auto; padding: 4px 0 30px; }
    .paywall-title { font-size: 22px; font-weight: 800; color: var(--navy-text); margin: 0 0 8px; line-height: 1.3; }
    .paywall-free { color: var(--green); }
    .paywall-sub { font-size: 14px; color: var(--text-soft); margin: 0 0 18px; }
    .paywall-features { text-align: left; margin-bottom: 20px; }
    .paywall-feature { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 14px; color: var(--text); }
    .feat-tick { color: var(--green); font-size: 16px; flex-shrink: 0; }
    .paywall-plans { display: flex; gap: 10px; margin-bottom: 20px; }
    .paywall-plan-card { flex: 1; border: 1.5px solid var(--border); border-radius: 14px; padding: 14px 8px; text-align: center; cursor: pointer; position: relative; transition: border-color .15s, background .15s; background: var(--card); }
    .paywall-plan-card.selected { border-color: #2ecc71; background: #f0fff8; }
    .paywall-plan-card.highlight { transform: scale(1.04); box-shadow: 0 4px 14px rgba(0,0,0,.1); }
    .plan-pop-badge { background: #2ecc71; color: #fff; font-size: 9px; font-weight: 700; padding: 2px 7px; border-radius: 6px; margin-bottom: 6px; display: inline-block; }
    .plan-title { font-size: 13px; font-weight: 700; color: var(--navy-text); margin-bottom: 6px; }
    .plan-price-big { font-size: 17px; font-weight: 900; color: var(--navy-text); }
    .plan-save { font-size: 11px; color: #2ecc71; font-weight: 700; margin-top: 3px; }
    .plan-label { font-size: 11px; color: var(--text-soft); margin-top: 4px; }
    .paywall-how { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; margin-bottom: 18px; }
    .paywall-how-title { font-size: 13px; font-weight: 700; color: var(--navy-text); margin-bottom: 12px; text-transform: uppercase; letter-spacing: .5px; }
    .paywall-steps { display: flex; flex-direction: column; gap: 10px; }
    .pay-step { display: flex; align-items: flex-start; gap: 12px; font-size: 14px; color: var(--text); }
    .pay-num { flex-shrink: 0; width: 24px; height: 24px; background: var(--navy); color: #fff; border-radius: 50%; font-size: 12px; font-weight: 800; display: flex; align-items: center; justify-content: center; }
    .paywall-redeem { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; }
    .redeem-input { width: 100%; border: 1.5px solid var(--border); border-radius: 10px; padding: 12px 14px; font-size: 15px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; background: #f8fafc; box-sizing: border-box; outline: none; }
    .redeem-input:focus { border-color: var(--navy-text); }
    .redeem-msg { margin-top: 10px; font-size: 13px; font-weight: 600; min-height: 18px; }
    .redeem-msg.error { color: var(--red); }
    .redeem-msg.success { color: var(--green); }
    /* Premium chip in header */
    .premium-chip { display: inline-flex; align-items: center; gap: 5px; background: linear-gradient(135deg,#fbbf24,#f59e0b); color: #fff; border-radius: 12px; font-size: 11px; font-weight: 700; padding: 3px 10px; margin-left: 8px; vertical-align: middle; }
    /* Free-questions banner */
    .free-banner { display: flex; align-items: center; justify-content: space-between; background: linear-gradient(135deg,#1a2b4a,#2d4a7a); color: #fff; border-radius: 14px; padding: 14px 18px; margin-bottom: 14px; gap: 12px; }
    .free-banner-left { display: flex; align-items: center; gap: 10px; min-width: 0; }
    .free-banner-num { font-size: 26px; font-weight: 900; line-height: 1; flex-shrink: 0; }
    .free-banner-lbl { font-size: 12px; opacity: .85; white-space: nowrap; line-height: 1.35; }
    .free-banner-btn { background: #fbbf24; color: #1a2b4a; border: none; border-radius: 10px; padding: 9px 16px; font-size: 13px; font-weight: 800; cursor: pointer; white-space: nowrap; flex-shrink: 0; letter-spacing: .2px; }
    /* ---- Admin notice banner ---- */
    .notice-bar { background: #fef3c7; border: 1.5px solid #fbbf24; border-radius: 12px; padding: 12px 16px; margin-bottom: 14px; display: flex; align-items: flex-start; gap: 10px; }
    .notice-bar-icon { font-size: 18px; flex-shrink: 0; margin-top: 1px; }
    .notice-bar-text { font-size: 13px; color: #92400e; line-height: 1.5; font-weight: 500; }
    /* Syllabus / TOS */
    .syl-exam-tab { flex:1; padding:9px 0; border:1.5px solid #d0d8e8; border-radius:10px; background:#fff; font-size:13px; font-weight:600; color:var(--navy-text); cursor:pointer; transition:all .15s; }
    .syl-exam-tab.active { background:var(--navy); color:#fff; border-color:var(--navy); }
    .syl-subject-card .syl-subject-header { display:flex; align-items:flex-start; padding:16px; gap:12px; }
    .syl-topics-list { border-top:1px solid #edf0f7; padding:4px 0 8px; }
    .syl-topic-block { border-bottom:1px solid #f0f4fb; }
    .syl-topic-block:last-child { border-bottom:none; }
    .syl-topic-row { display:flex; align-items:center; gap:10px; padding:10px 16px; cursor:pointer; }
    .syl-topic-row:hover { background:#f7f9ff; }
    .syl-topic-name { flex:1; font-size:13px; font-weight:600; color:var(--navy-text); }
    .syl-mcq-badge { font-size:11px; font-weight:700; color:var(--navy-text); background:#eef2ff; padding:2px 8px; border-radius:20px; flex-shrink:0; }
    .syl-subtopics { padding:0 16px 8px 42px; display:flex; flex-direction:column; gap:5px; }
    .syl-sub-row { display:flex; align-items:flex-start; gap:8px; cursor:pointer; }
    .syl-cb { width:16px; height:16px; border-radius:4px; cursor:pointer; accent-color:var(--navy-text); flex-shrink:0; margin-top:1px; }
    .syl-practice-btn { white-space:nowrap; }
    [data-theme="dark"] .syl-exam-tab { background:var(--card); color:var(--text); border-color:#2a3a5a; }
    [data-theme="dark"] .syl-exam-tab.active { background:var(--navy); color:#fff; }
    [data-theme="dark"] .syl-topic-row:hover { background:#1e2d4a; }
    [data-theme="dark"] .syl-mcq-badge { background:#1e2d4a; }
    /* ---- Referral card ---- */
    .referral-card { background: var(--card); border: 1.5px solid var(--border); border-radius: 14px; padding: 18px; margin-top: 16px; }
    .referral-card h3 { font-size: 15px; font-weight: 700; color: var(--navy-text); margin: 0 0 4px; }
    .referral-card p { font-size: 13px; color: var(--text-soft); margin: 0 0 14px; line-height: 1.5; }
    .referral-code-row { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; }
    .referral-code-box { flex: 1; font-size: 18px; font-weight: 800; letter-spacing: 3px; color: var(--navy-text); background: var(--bg); border: 1.5px solid var(--border); border-radius: 10px; padding: 10px 14px; text-align: center; font-family: monospace; }
    .referral-copy-btn { background: var(--navy); color: #fff; border: none; border-radius: 10px; padding: 10px 16px; font-size: 13px; font-weight: 700; cursor: pointer; white-space: nowrap; }
    .referral-wa-btn { display: flex; align-items: center; gap: 6px; background: #25D366; color: #fff; border: none; border-radius: 10px; padding: 10px 16px; font-size: 13px; font-weight: 700; cursor: pointer; white-space: nowrap; text-decoration: none; }
    .referral-stat { font-size: 13px; color: var(--text-soft); margin-top: 10px; }
    .referral-progress-wrap { margin: 12px 0 4px; }
    .referral-progress-label { display: flex; justify-content: space-between; font-size: 12px; font-weight: 600; color: var(--text-soft); margin-bottom: 5px; }
    .referral-progress-bar { height: 8px; background: var(--border); border-radius: 99px; overflow: hidden; }
    .referral-progress-fill { height: 100%; background: linear-gradient(90deg, var(--navy), #3a6fcc); border-radius: 99px; transition: width .4s ease; }
    .referral-earned-badge { display: inline-flex; align-items: center; gap: 5px; background: #dcfce7; color: #15803d; border-radius: 8px; padding: 4px 10px; font-size: 12px; font-weight: 700; margin-top: 8px; }
    .referral-stat strong { color: var(--navy-text); }
    /* ---- Renewal reminder banner ---- */
    .renewal-banner { background: linear-gradient(135deg,#1a2b4a,#243a60); border-radius: 14px; padding: 16px 18px; margin-bottom: 14px; color: #fff; }
    .renewal-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
    .renewal-days { font-size: 12px; font-weight: 800; background: rgba(251,191,36,.2); color: #fbbf24; border-radius: 20px; padding: 3px 10px; display: inline-block; }
    .renewal-exp { font-size: 11px; opacity: .6; margin-top: 8px; }
    .renewal-msg { font-size: 14px; line-height: 1.5; opacity: .9; margin: 6px 0 10px; }
    .renewal-btn { background: #fbbf24; color: #1a2b4a; border: none; border-radius: 10px; padding: 9px 18px; font-size: 13px; font-weight: 800; cursor: pointer; }
    /* ---- Support screen ---- */
    .support-card { display: flex; align-items: center; gap: 16px; background: var(--card); border: 1.5px solid var(--border); border-radius: 14px; padding: 18px; margin: 16px 0 12px; }
    .support-icon { font-size: 36px; flex-shrink: 0; }
    .support-label { font-size: 12px; font-weight: 700; color: var(--text-soft); text-transform: uppercase; letter-spacing: .5px; margin-bottom: 4px; }
    .support-val { font-size: 22px; font-weight: 900; color: var(--navy-text); margin-bottom: 4px; }
    .support-hint { font-size: 12px; color: var(--text-soft); }
    .support-wa-btn { display: flex; align-items: center; justify-content: center; gap: 10px; background: #25D366; color: #fff; border-radius: 12px; padding: 14px; font-size: 15px; font-weight: 700; text-decoration: none; margin-bottom: 22px; transition: opacity .15s; }
    .support-wa-btn:hover { opacity: .9; }
    .support-divider { font-size: 12px; font-weight: 700; color: var(--text-soft); text-transform: uppercase; letter-spacing: .7px; margin-bottom: 14px; padding-top: 4px; }
    .support-option-list { display: flex; flex-direction: column; gap: 12px; }
    .support-option { display: flex; align-items: flex-start; gap: 14px; background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 14px 16px; }
    .support-option-icon { font-size: 22px; flex-shrink: 0; }
    .support-option-title { font-size: 14px; font-weight: 700; color: var(--navy-text); margin-bottom: 3px; }
    .support-option-sub { font-size: 12px; color: var(--text-soft); line-height: 1.5; }
    .badge { display: inline-flex; align-items: center; gap: 6px; border-radius: 20px; padding: 5px 12px; font-size: 12px; font-weight: 700; }
    .badge.gold { background: #fef3c7; color: #b45309; border: 1px solid #fcd34d; }
    .badge.silver { background: #f3f4f6; color: #374151; border: 1px solid #d1d5db; }
    .badge.bronze { background: #fdf2e9; color: #92400e; border: 1px solid #fdba74; }
    .badge.locked { background: var(--bg); color: var(--text-soft); border: 1px dashed var(--border); opacity: .6; }

    /* ── Predicted pass score ── */
    .pass-widget { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 16px; margin-top: 8px; }
    .pass-bar-track { height: 12px; background: #e5e7eb; border-radius: 6px; overflow: hidden; margin: 10px 0 6px; }
    .pass-bar-fill { height: 100%; border-radius: 6px; transition: width .6s; }
    .pass-meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--text-soft); }

    /* ── Weekly report ── */
    .weekly-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 10px; }
    .weekly-cell { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 12px; }
    .weekly-num { font-size: 24px; font-weight: 800; color: var(--navy-text); }
    .weekly-lbl { font-size: 12px; color: var(--text-soft); margin-top: 2px; }
    .weekly-delta { font-size: 11px; font-weight: 700; margin-top: 4px; }
    .weekly-delta.up { color: var(--green); }
    .weekly-delta.down { color: var(--red); }
    .weekly-delta.same { color: var(--text-soft); }

    /* === SwipeLayout Bottom Nav === */
    .sw-bottom-nav {
      position: fixed; bottom: 0; left: 0; right: 0;
      height: calc(62px + env(safe-area-inset-bottom));
      background: var(--card); border-top: 1px solid var(--border);
      display: flex; align-items: flex-start; justify-content: space-around;
      padding: 8px 0 env(safe-area-inset-bottom);
      z-index: 20; box-shadow: 0 -2px 12px rgba(0,0,0,.06);
    }
    .sw-tab-btn {
      flex: 1; min-width: 44px; display: flex; flex-direction: column;
      align-items: center; justify-content: flex-start;
      gap: 2px; background: none; border: none;
      padding: 4px 2px 0; cursor: pointer;
      position: relative; color: var(--text-soft);
      transition: color .15s; font: inherit;
    }
    .sw-tab-btn.active { color: var(--navy); }
    [data-theme="dark"] .sw-tab-btn.active { color: #7baed6; }
    .sw-tab-btn::before {
      content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
      width: 32px; height: 3px; background: transparent; border-radius: 0 0 4px 4px;
      transition: background .15s;
    }
    .sw-tab-btn.active::before { background: var(--navy); }
    [data-theme="dark"] .sw-tab-btn.active::before { background: #7baed6; }
    .sw-tab-btn svg { width: 20px; height: 20px; }
    .sw-tab-btn span { font-size: 9px; font-weight: 600; letter-spacing: .1px; }
    /* === SwipeLayout Drawer === */
    .sw-overlay {
      position: fixed; inset: 0; z-index: 40;
      background: rgba(26,43,74,.5);
      backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); display: none;
    }
    .sw-drawer {
      position: fixed; top: 0; bottom: 0; left: 0; width: min(284px, 88vw);
      background: var(--card); z-index: 50; display: flex; flex-direction: column;
      border-radius: 0 20px 20px 0; box-shadow: 4px 0 32px rgba(0,0,0,.18);
      transform: translateX(-100%);
      transition: transform .28s cubic-bezier(.25,.8,.25,1); overflow: hidden;
    }
    .sw-drawer.open { transform: translateX(0); }
    .sw-drawer-head {
      background: var(--navy); padding: calc(18px + env(safe-area-inset-top)) 18px 18px;
      flex-shrink: 0; position: relative; overflow: hidden;
    }
    .sw-drawer-head::before {
      content: ""; position: absolute; top: -30px; right: -30px;
      width: 110px; height: 110px;
      background: rgba(255,255,255,.05); border-radius: 50%; filter: blur(18px);
    }
    .sw-drawer-avatar-row { display: flex; align-items: center; gap: 12px; position: relative; }
    .sw-drawer-avatar {
      width: 48px; height: 48px; border-radius: 50%;
      background: linear-gradient(135deg,#2c4a82,#1D9E75);
      display: flex; align-items: center; justify-content: center;
      font-size: 18px; font-weight: 800; color: #fff; flex-shrink: 0;
      border: 2px solid rgba(255,255,255,.25); overflow: hidden;
    }
    .sw-drawer-avatar img { width: 100%; height: 100%; object-fit: cover; }
    .sw-drawer-avatar-wrap { position: relative; cursor: pointer; border-radius: 50%; flex-shrink: 0; }
    .sw-drawer-avatar-wrap:hover .sw-av-cam { opacity: 1; }
    .sw-av-cam { position: absolute; inset: 0; border-radius: 50%; background: rgba(0,0,0,.45); display: flex; align-items: center; justify-content: center; opacity: 0; transition: opacity .2s; pointer-events: none; }
    .sw-av-cam svg { width: 18px; height: 18px; stroke: #fff; fill: none; }
    .sw-av-uploading { opacity: .6; pointer-events: none; }
    .sw-drawer-name { font-size: 16px; font-weight: 700; color: #fff; line-height: 1.2; }
    .sw-drawer-level { background: var(--green); color: #fff; font-size: 10px; font-weight: 700; padding: 2px 8px; border-radius: 6px; display: inline-block; margin-top: 4px; }
    .sw-drawer-xp-bar { margin-top: 12px; }
    .sw-drawer-xp-label { display: flex; justify-content: space-between; font-size: 11px; color: rgba(255,255,255,.65); font-weight: 600; margin-bottom: 5px; }
    .sw-drawer-xp-track { height: 5px; background: rgba(0,0,0,.3); border-radius: 99px; overflow: hidden; }
    .sw-drawer-xp-fill { height: 100%; background: var(--green); border-radius: 99px; transition: width .4s; }
    .sw-drawer-body { flex: 1; overflow-y: auto; padding: 8px 6px; }
    .sw-drawer-item {
      display: flex; align-items: center; gap: 12px;
      padding: 10px 12px; border-radius: 10px;
      font: inherit; font-size: 14px; font-weight: 600;
      color: var(--text); background: none; border: none;
      cursor: pointer; width: 100%; text-align: left; transition: background .12s;
    }
    .sw-drawer-item:hover { background: var(--bg); }
    .sw-drawer-item.active { background: rgba(29,158,117,.1); color: var(--green); }
    .sw-drawer-item svg { width: 18px; height: 18px; flex-shrink: 0; opacity: .7; }
    .sw-drawer-item.active svg { opacity: 1; color: var(--green); }
    .sw-drawer-sep { height: 1px; background: var(--border); margin: 5px 12px; }
    .sw-drawer-foot { padding: 10px 12px calc(10px + env(safe-area-inset-bottom)); flex-shrink: 0; border-top: 1px solid var(--border); }
    .sw-upgrade-btn {
      width: 100%; padding: 12px; border-radius: 10px;
      background: var(--green); color: #fff; border: none;
      font: inherit; font-size: 14px; font-weight: 700;
      cursor: pointer; display: flex; align-items: center; justify-content: center; gap: 8px;
      box-shadow: 0 4px 12px rgba(29,158,117,.25);
    }
    .sw-upgrade-btn:hover { background: #168864; }
    /* === Home Tab Cards === */
    .sw-card {
      background: var(--card); border: 1px solid var(--border);
      border-radius: 16px; padding: 16px; box-shadow: var(--shadow); margin-bottom: 12px;
    }
    .sw-countdown-card {
      background: var(--navy); color: #fff; border: none;
      position: relative; overflow: hidden;
    }
    .sw-countdown-card::before {
      content: ""; position: absolute; top: -20px; right: -20px;
      width: 90px; height: 90px;
      background: rgba(255,255,255,.05); border-radius: 50%; filter: blur(24px);
    }
    .sw-xp-card { display: flex; align-items: center; gap: 14px; }
    .sw-trophy-ring {
      width: 50px; height: 50px; border-radius: 50%;
      background: linear-gradient(135deg,#f59e0b,#d97706);
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0; position: relative; font-size: 22px;
    }
    .sw-trophy-lvl {
      position: absolute; bottom: -3px; right: -3px;
      background: var(--navy); color: #fff;
      font-size: 9px; font-weight: 800; padding: 1px 5px; border-radius: 99px;
      border: 1.5px solid var(--card);
    }
    .sw-xp-info { flex: 1; min-width: 0; }
    .sw-xp-name { font-size: 14px; font-weight: 700; color: var(--navy-text); }
    .sw-xp-track { height: 8px; background: var(--bg); border-radius: 99px; overflow: hidden; }
    .sw-xp-fill { height: 100%; background: var(--green); border-radius: 99px; }
    .sw-xp-next { font-size: 10px; color: var(--text-soft); margin-top: 4px; font-weight: 500; }
    /* === Practice Tab === */
    .sw-big-btn {
      width: 100%; background: var(--navy); color: #fff;
      border: none; border-radius: 16px; padding: 20px 60px 20px 20px;
      cursor: pointer; text-align: left; font: inherit;
      margin-bottom: 10px; position: relative; overflow: hidden; transition: opacity .15s;
    }
    .sw-big-btn:hover { opacity: .9; }
    .sw-bb-title { font-size: 21px; font-weight: 800; }
    .sw-bb-sub { font-size: 13px; color: rgba(255,255,255,.7); margin-top: 2px; }
    .sw-bb-icon {
      position: absolute; right: 16px; top: 50%; transform: translateY(-50%);
      width: 42px; height: 42px; border-radius: 50%; background: var(--green);
      display: flex; align-items: center; justify-content: center; font-size: 18px;
    }
    .sw-row-btn {
      width: 100%; background: var(--card); color: var(--text);
      border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px;
      cursor: pointer; text-align: left; font: inherit;
      display: flex; align-items: center; gap: 11px;
      margin-bottom: 9px; transition: border-color .12s, background .12s;
    }
    .sw-row-btn:hover { border-color: var(--navy); }
    .sw-row-icon {
      width: 36px; height: 36px; border-radius: 9px;
      background: var(--bg); display: flex; align-items: center; justify-content: center;
      font-size: 17px; flex-shrink: 0;
    }
    .sw-row-btn-info { flex: 1; min-width: 0; }
    .sw-row-btn-title { font-size: 14px; font-weight: 700; color: var(--navy-text); }
    .sw-row-btn-sub { font-size: 12px; color: var(--text-soft); }
    .sw-row-btn-arrow { color: var(--text-soft); font-size: 18px; flex-shrink: 0; }
    .sw-section-head { display: flex; justify-content: space-between; align-items: center; margin: 4px 0 10px; }
    .sw-section-title { font-size: 12px; font-weight: 700; color: var(--navy-text); text-transform: uppercase; letter-spacing: .5px; }
    .sw-section-link { font-size: 12px; font-weight: 700; color: var(--green); background: none; border: none; cursor: pointer; font: inherit; }
    .sw-topic-scroll {
      display: flex; gap: 10px; overflow-x: auto; padding: 0 0 8px 0;
      -ms-overflow-style: none; scrollbar-width: none;
    }
    .sw-topic-scroll::-webkit-scrollbar { display: none; }
    .sw-topic-card {
      flex-shrink: 0; width: 108px; background: var(--card);
      border: 1px solid var(--border); border-radius: 12px; padding: 11px;
      cursor: pointer; transition: border-color .12s, box-shadow .12s;
    }
    .sw-topic-card:hover { border-color: var(--navy); box-shadow: var(--shadow); }
    .sw-topic-icon { width: 30px; height: 30px; border-radius: 8px; display: flex; align-items: center; justify-content: center; font-size: 15px; margin-bottom: 7px; }
    .sw-topic-name { font-size: 12px; font-weight: 700; color: var(--navy-text); line-height: 1.3; }
    .sw-topic-count { font-size: 10px; color: var(--text-soft); margin-top: 2px; }
    /* === Review Tab === */
    .sw-review-stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; margin-bottom: 14px; }
    .sw-rstat { background: var(--card); border: 1px solid var(--border); border-radius: 12px; padding: 13px 10px; text-align: center; }
    .sw-rstat-num { font-size: 26px; font-weight: 800; color: var(--navy-text); line-height: 1; }
    .sw-rstat-lbl { font-size: 10px; color: var(--text-soft); text-transform: uppercase; letter-spacing: .4px; margin-top: 3px; font-weight: 600; }
    /* === Leaders Tab / Globe === */
    .sw-globe-wrap {
      background: linear-gradient(160deg, #1a2b4a 0%, #0d1f3c 100%);
      border-radius: 16px; display: flex; flex-direction: column;
      align-items: center; padding: 24px 16px 20px;
      position: relative; overflow: hidden; margin-bottom: 12px;
    }
    .sw-globe-pill {
      margin-top: 12px; background: rgba(255,255,255,.12);
      border: 1px solid rgba(255,255,255,.2);
      color: #fff; font-size: 12px; font-weight: 600;
      padding: 7px 14px; border-radius: 999px;
      display: flex; align-items: center; gap: 6px;
    }
    .sw-lb-head {
      display: flex; align-items: center; justify-content: space-between;
      padding: 12px 0; border-bottom: 1px solid var(--border); margin-bottom: 4px;
    }
    .sw-lb-title { font-size: 14px; font-weight: 700; color: var(--navy-text); }
    .sw-lb-filter { font-size: 12px; font-weight: 700; color: var(--green); background: none; border: none; cursor: pointer; font: inherit; padding: 0; }
    .sw-lb-row {
      display: flex; align-items: center; gap: 10px;
      padding: 10px 10px; border-bottom: 1px solid var(--border);
      border-left: 3px solid transparent; margin-left: -10px;
    }
    .sw-lb-row:last-child { border-bottom: none; }
    .sw-lb-row.is-me { background: rgba(29,158,117,.06); border-radius: 8px; }
    .sw-lb-rank { width: 18px; text-align: center; font-size: 12px; font-weight: 800; color: var(--text-soft); flex-shrink: 0; }
    .sw-lb-avatar {
      width: 34px; height: 34px; border-radius: 50%;
      background: #e5e7eb; display: flex; align-items: center; justify-content: center;
      font-size: 13px; font-weight: 700; color: #555; flex-shrink: 0;
    }
    .sw-lb-info { flex: 1; min-width: 0; }
    .sw-lb-name { font-size: 13px; font-weight: 700; color: var(--navy-text); }
    .sw-lb-uni { font-size: 11px; color: var(--text-soft); }
    .sw-lb-xp { text-align: right; flex-shrink: 0; }
    .sw-lb-xp-val { font-size: 13px; font-weight: 700; color: var(--green); }
    .sw-lb-xp-lbl { font-size: 9px; color: var(--text-soft); text-transform: uppercase; letter-spacing: .5px; }
    @keyframes ping { 75%, 100% { transform: scale(2); opacity: 0; } }
    /* Animated leaderboard */
    .lb-move-up { color: #1D9E75; font-size: 9px; font-weight: 900; margin-left: 4px; animation: lbFadeOut 1.9s ease forwards; display:inline-block; }
    .lb-move-dn  { color: #ef4444;  font-size: 9px; font-weight: 900; margin-left: 4px; animation: lbFadeOut 1.9s ease forwards; display:inline-block; }
    .lb-verified-badge { background: #1D9E75; color: #fff; font-size: 9px; font-weight: 700; padding: 1px 5px; border-radius: 4px; margin-left: 4px; vertical-align: middle; letter-spacing: .2px; }
    @keyframes lbFadeOut { 0%,45%{opacity:1} 100%{opacity:0} }
    .lb-anim-wrap { position: relative; overflow: hidden; }