:root {
      --pe-bg-soft: rgba(255, 255, 255, .04);
      --pe-border-soft: rgba(255, 255, 255, .09);
    }

    * {
      box-sizing: border-box;
    }

    html, body {
      min-height: 100%;
    }

    body {
      margin: 0;
      color: var(--text1, #f8fafc);
      font-family: 'Inter', sans-serif;
      background:
        radial-gradient(circle at top left, rgba(var(--primary-rgb), .16), transparent 26%),
        radial-gradient(circle at top right, color-mix(in srgb, var(--secondary) 24%, transparent), transparent 22%),
        linear-gradient(180deg, var(--bg1) 0%, var(--bg2) 100%);
    }

    body.pe-modal-open {
      overflow: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    .back-btn:hover {
      border-color: rgba(var(--primary-rgb), .35);
      color: var(--primary);
    }

.page-shell {
      width: min(1440px, calc(100vw - 32px));
      margin: 0 auto;
      padding: 24px 0 72px;
    }

    .hero-panel,
    .curriculum-panel {
      border: 1px solid var(--border);
      border-radius: 26px;
      background: color-mix(in srgb, var(--card) 88%, transparent);
      box-shadow: 0 24px 54px rgba(0, 0, 0, .16);
    }

    .hero-panel {
      position: relative;
      overflow: hidden;
      padding: 18px 22px;
      margin-bottom: 14px;
      background:
        radial-gradient(circle at 82% 18%, rgba(var(--primary-rgb), .22), transparent 22%),
        radial-gradient(circle at 14% 0%, rgba(124, 58, 237, .12), transparent 28%),
        color-mix(in srgb, var(--card) 88%, transparent);
    }

    .hero-panel::before {
      content: "";
      position: absolute;
      inset: 0;
      background:
        linear-gradient(120deg, rgba(255,255,255,.035), transparent 28%),
        radial-gradient(circle at bottom right, rgba(255,255,255,.025), transparent 20%);
      pointer-events: none;
    }

    .hero-panel::after {
      content: "";
      position: absolute;
      inset: auto -60px -80px auto;
      width: 260px;
      height: 260px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(var(--primary-rgb), .18), transparent 68%);
      filter: blur(12px);
      pointer-events: none;
    }

    .hero-layout {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 18px;
      align-items: center;
      position: relative;
      z-index: 1;
    }

    .hero-copy {
      display: grid;
      gap: 10px;
      align-content: start;
    }

    .hero-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      width: fit-content;
      padding: 6px 10px;
      border-radius: 999px;
      border: 1px solid rgba(var(--primary-rgb), .2);
      background: rgba(var(--primary-rgb), .1);
      color: var(--accent);
      font: 700 .68rem/1 'JetBrains Mono', monospace;
      letter-spacing: .08em;
      text-transform: uppercase;
    }

    .hero-kicker i {
      color: var(--primary);
    }

    .hero-panel h1 {
      margin: 0;
      max-width: 18ch;
      font: 800 clamp(1.7rem, 3.4vw, 2.9rem)/1.02 'Sora', sans-serif;
      letter-spacing: -.07em;
    }

    .hero-panel h1 .hero-em {
      display: block;
      background: linear-gradient(90deg, #fff 0%, color-mix(in srgb, var(--accent) 84%, #fff) 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

    .hero-panel p {
      margin: 0;
      max-width: 72ch;
      color: color-mix(in srgb, var(--text2) 88%, white 12%);
      line-height: 1.55;
      font-size: .9rem;
    }

    .hero-panel p strong {
      color: var(--text1);
      font-weight: 700;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 0;
    }

    .hero-chips,
    .curriculum-meta,
    .card-tags {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
    }

    .hero-chips {
      margin-top: 0;
    }

    .mini-pill,
    .card-level,
    .card-link {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 10px;
      border: 1px solid var(--border);
      border-radius: 999px;
      background: rgba(255, 255, 255, .04);
      color: var(--text2);
      font: 700 .68rem/1 'JetBrains Mono', monospace;
      text-decoration: none;
      transition: .2s ease;
    }

    .hero-btn {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 10px 13px;
      border-radius: 999px;
      border: 1px solid var(--border2);
      background: color-mix(in srgb, var(--bg3) 78%, transparent);
      color: var(--text2);
      font: 700 .78rem/1 'Sora', sans-serif;
      cursor: pointer;
      transition: .2s ease;
    }

    .hero-btn:hover {
      color: var(--primary);
      border-color: color-mix(in srgb, var(--primary) 42%, var(--border2));
      background: rgba(var(--primary-rgb), .09);
    }

    .hero-btn.primary {
      background: linear-gradient(135deg, rgba(var(--primary-rgb), .22), rgba(var(--primary-rgb), .1));
      color: var(--text1);
      border-color: rgba(var(--primary-rgb), .24);
      box-shadow: 0 12px 30px rgba(var(--primary-rgb), .14);
    }

    .hero-side {
      display: grid;
      gap: 10px;
      align-content: start;
    }

    .hero-stats {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 8px;
    }

    .hero-stat {
      display: grid;
      grid-template-columns: auto 1fr;
      gap: 10px;
      align-items: start;
      padding: 10px;
      border-radius: 20px;
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, .04);
      min-height: 0;
    }

    .hero-stat:nth-child(1) .hero-stat-no { background: rgba(34,197,94,.14); border-color: rgba(34,197,94,.24); }
    .hero-stat:nth-child(2) .hero-stat-no { background: rgba(59,130,246,.14); border-color: rgba(59,130,246,.24); }
    .hero-stat:nth-child(3) .hero-stat-no { background: rgba(168,85,247,.14); border-color: rgba(168,85,247,.24); }
    .hero-stat:nth-child(4) .hero-stat-no { background: rgba(249,115,22,.14); border-color: rgba(249,115,22,.24); }

    .hero-stat-no {
      width: 54px;
      height: 44px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(var(--primary-rgb), .12);
      border: 1px solid rgba(var(--primary-rgb), .24);
      font: 800 1rem/1 'Sora', sans-serif;
      color: var(--text1);
    }

    .hero-stat-copy {
      display: grid;
      gap: 3px;
    }

    .hero-stat strong {
      display: block;
      margin-bottom: 0;
      font: 800 .82rem/1.1 'Sora', sans-serif;
      color: var(--text1);
    }

    .hero-stat span {
      display: block;
      color: var(--text3);
      font-size: .72rem;
      line-height: 1.42;
    }

    .hero-roadmap {
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: 24px;
      background:
        linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.02));
    }

    .hero-roadmap strong {
      display: block;
      margin-bottom: 8px;
      font: 800 .86rem/1.2 'Sora', sans-serif;
      color: var(--text1);
    }

    .roadmap-line {
      display: flex;
      flex-wrap: wrap;
      gap: 7px;
      align-items: center;
    }

    .roadmap-step {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 10px;
      border-radius: 999px;
      border: 1px solid var(--border);
      background: rgba(255, 255, 255, .04);
      color: var(--text2);
      font: 700 .68rem/1 'JetBrains Mono', monospace;
      text-transform: uppercase;
      letter-spacing: .06em;
    }

    .roadmap-step:nth-child(1) { color: #7dd3fc; }
    .roadmap-step:nth-child(3) { color: #86efac; }
    .roadmap-step:nth-child(5) { color: #f9a8d4; }
    .roadmap-step:nth-child(7) { color: #fcd34d; }
    .roadmap-step:nth-child(9) { color: #c4b5fd; }
    .roadmap-step:nth-child(11) { color: #fdba74; }
    .roadmap-step:nth-child(13) { color: #67e8f9; }

    .roadmap-arrow {
      color: var(--text3);
      font-size: .8rem;
    }

    .curriculum-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      border-bottom: 1px solid var(--border);
      background:
        linear-gradient(135deg, rgba(var(--primary-rgb), .1), rgba(var(--primary-rgb), .03)),
        color-mix(in srgb, var(--bg3) 70%, transparent);
    }

    .curriculum-title {
      display: grid;
      gap: 6px;
    }

    .curriculum-title strong {
      font: 800 1.05rem/1.15 'Sora', sans-serif;
      letter-spacing: -.03em;
    }

    .curriculum-title span {
      color: var(--text3);
      font-size: .82rem;
    }

    .curriculum-body {
      padding: 20px;
    }

    .catalog-grid {
      display: grid;
      gap: 18px;
    }

    .category-block {
      border: 1px solid var(--border);
      border-radius: 24px;
      background: color-mix(in srgb, var(--bg3) 76%, transparent);
      overflow: hidden;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.03);
    }

    .category-head {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 20px;
      border-bottom: 1px solid var(--border);
      cursor: pointer;
      transition: background .2s ease;
      position: relative;
    }

    .category-head:hover {
      background: rgba(255, 255, 255, .025);
    }

    .category-block.open .category-head {
      background: linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.01));
    }

    .category-title {
      display: flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
    }

    .category-icon {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--border2);
      font-size: 1rem;
      flex-shrink: 0;
    }

    .category-copy {
      display: grid;
      gap: 4px;
    }

    .category-copy strong {
      font: 800 1rem/1.15 'Sora', sans-serif;
      color: var(--text1);
      letter-spacing: -.03em;
    }

    .category-copy span {
      color: var(--text3);
      font-size: .8rem;
    }

    .category-meta {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-left: auto;
    }

    .category-chevron {
      color: var(--text3);
      font-size: .9rem;
      transition: transform .2s ease, color .2s ease;
    }

    .category-block.open .category-chevron {
      transform: rotate(90deg);
      color: var(--primary);
    }

    .lesson-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
      padding: 18px;
    }

    .category-lessons {
      display: none;
    }

    .category-block.open .category-lessons {
      display: block;
    }

    .lesson-card {
      position: relative;
      display: block;
      border: 1px solid var(--border);
      border-radius: 22px;
      background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.02));
      overflow: hidden;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }

    .lesson-card:hover {
      transform: translateY(-2px);
      border-color: var(--border2);
      box-shadow: 0 14px 34px rgba(0,0,0,.16);
    }

    .lesson-card::before {
      content: "";
      position: absolute;
      inset: 0 auto auto 0;
      width: 100%;
      height: 4px;
      background: var(--strip, linear-gradient(90deg, var(--primary), var(--secondary)));
    }

    .lesson-toggle {
      width: 100%;
      border: 0;
      background: transparent;
      color: inherit;
      text-align: left;
      padding: 18px;
      cursor: pointer;
    }

    .card-top {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 12px;
    }

    .card-icon {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(255, 255, 255, .05);
      border: 1px solid var(--border);
      font-size: 1rem;
      box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
    }

    .card-level {
      color: var(--primary);
      background: rgba(var(--primary-rgb), .12);
    }

    .lesson-chevron {
      color: var(--text3);
      font-size: .9rem;
      transition: transform .2s ease, color .2s ease, background .2s ease;
      margin-left: auto;
      padding-top: 2px;
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: rgba(255,255,255,.05);
      border: 1px solid var(--border);
    }

    .lesson-card:hover .lesson-chevron {
      color: var(--primary);
      background: rgba(var(--primary-rgb), .12);
      transform: translateX(2px);
    }

    .card-copy {
      display: grid;
      gap: 8px;
      margin-top: 12px;
    }

    .card-copy strong {
      font: 800 1rem/1.2 'Sora', sans-serif;
      letter-spacing: -.03em;
      color: var(--text1);
    }

    .card-copy span {
      color: color-mix(in srgb, var(--accent) 58%, var(--text3));
      font-size: .8rem;
      font-weight: 700;
    }

    .card-copy p {
      margin: 0;
      color: color-mix(in srgb, var(--text2) 90%, white 10%);
      font-size: .88rem;
      line-height: 1.7;
    }

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

    .card-actions .mini-pill:last-child {
      background: rgba(var(--primary-rgb), .12);
      color: var(--primary);
      border-color: rgba(var(--primary-rgb), .18);
    }

    .card-link:hover {
      color: var(--primary);
      border-color: color-mix(in srgb, var(--primary) 42%, var(--border2));
      background: rgba(var(--primary-rgb), .09);
    }

    .catalog-empty {
      padding: 38px 16px;
      text-align: center;
      color: var(--text3);
    }

    .detail-box {
      padding: 12px;
      border: 1px solid var(--border);
      border-radius: 18px;
      background: rgba(255, 255, 255, .03);
      position: relative;
      overflow: hidden;
    }

    .detail-box::before {
      content: "";
      position: absolute;
      inset: 0 auto 0 0;
      width: 4px;
      background: linear-gradient(180deg, var(--primary), var(--accent));
      opacity: .8;
    }

    .detail-box strong {
      display: block;
      margin-bottom: 8px;
      font: 700 .78rem/1.2 'JetBrains Mono', monospace;
      color: var(--accent);
      text-transform: uppercase;
      letter-spacing: .08em;
    }

    .detail-box p {
      margin: 0;
      color: color-mix(in srgb, var(--text2) 92%, white 8%);
      line-height: 1.58;
      font-size: .84rem;
    }

    .detail-box ul {
      margin: 0;
      padding-left: 18px;
      color: color-mix(in srgb, var(--text2) 92%, white 8%);
      line-height: 1.56;
      font-size: .84rem;
    }

    .detail-box li::marker {
      color: var(--primary);
    }

    .pe-detail-shell {
      position: fixed;
      inset: 0;
      z-index: 3000;
      display: grid;
      place-items: center;
      padding: clamp(18px, 3vw, 36px);
      background: rgba(2, 6, 23, .58);
      backdrop-filter: blur(14px);
      overflow: hidden;
    }

    .pe-detail-shell[hidden] {
      display: none !important;
    }

    .pe-detail-card {
      width: min(1200px, calc(100vw - 72px));
      height: min(760px, calc(100dvh - 72px));
      max-height: calc(100dvh - 72px);
      overflow: hidden;
      border-radius: 30px;
      border: 1px solid var(--border2);
      background: color-mix(in srgb, var(--card) 94%, white 6%);
      box-shadow: 0 40px 120px rgba(0,0,0,.28);
    }

    .pe-detail-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 22px;
      padding: 20px 22px;
      border-bottom: 1px solid var(--border);
    }

    .pe-detail-head h3 {
      margin: 8px 0 8px;
      font: 800 clamp(1.7rem, 3.2vw, 2.55rem)/1 'Sora', sans-serif;
      letter-spacing: -.05em;
      color: var(--text1);
    }

    .pe-detail-head p {
      margin: 0;
      max-width: 74ch;
      color: var(--text2);
      line-height: 1.62;
      font-size: .92rem;
    }

    .pe-detail-close {
      width: 46px;
      height: 46px;
      border-radius: 18px;
      border: 1px solid var(--border);
      background: rgba(255,255,255,.06);
      color: var(--text1);
      font-size: 1rem;
      cursor: pointer;
      flex-shrink: 0;
    }

    .pe-detail-body {
      display: grid;
      grid-template-columns: .82fr 1.18fr;
      gap: 16px;
      padding: 12px 16px 16px;
      height: calc(100% - 138px);
      overflow: hidden;
    }

    .pe-detail-note {
      padding: 13px;
      border: 1px solid var(--border);
      border-radius: 22px;
      background: linear-gradient(180deg, rgba(var(--primary-rgb), .08), rgba(255,255,255,.02));
      min-height: 0;
      overflow: hidden;
    }

    .pe-detail-note strong {
      display: block;
      margin-bottom: 10px;
      font: 800 1.02rem/1.2 'Sora', sans-serif;
      color: var(--text1);
    }

    .pe-detail-note p,
    .pe-detail-note li {
      color: var(--text2);
      line-height: 1.58;
      font-size: .85rem;
    }

    .pe-detail-note ul {
      margin: 8px 0 0;
      padding-left: 18px;
    }

    .pe-detail-sections {
      display: grid;
      gap: 10px;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      min-height: 0;
      overflow: hidden;
    }

    .pe-detail-sections .detail-box:nth-child(3),
    .pe-detail-sections .detail-box:nth-child(4),
    .pe-detail-sections .detail-box:nth-child(5) {
      grid-column: span 2;
    }

[data-theme="corporate"][data-module="rk"] .hero-panel,
[data-theme="corporate"][data-module="rk"] .curriculum-panel,
[data-theme="corporate"][data-module="rk"] .category-block,
[data-theme="corporate"][data-module="rk"] .lesson-card,
[data-theme="corporate"][data-module="rk"] .hero-roadmap,
[data-theme="corporate"][data-module="rk"] .hero-stat,
[data-theme="corporate"][data-module="rk"] .detail-box {
      background: rgba(255, 255, 255, .72);
      box-shadow: 0 10px 28px rgba(15, 23, 42, .08);
    }

[data-theme="corporate"][data-module="rk"] .hero-panel p,
[data-theme="corporate"][data-module="rk"] .card-copy p,
[data-theme="corporate"][data-module="rk"] .detail-box p,
[data-theme="corporate"][data-module="rk"] .detail-box ul,
[data-theme="corporate"][data-module="rk"] .hero-stat span,
[data-theme="corporate"][data-module="rk"] .category-copy span,
[data-theme="corporate"][data-module="rk"] .curriculum-title span {
      color: #334155;
    }

[data-theme="corporate"][data-module="rk"] .hero-panel h1,
[data-theme="corporate"][data-module="rk"] .hero-stat strong,
[data-theme="corporate"][data-module="rk"] .card-copy strong,
[data-theme="corporate"][data-module="rk"] .category-copy strong,
[data-theme="corporate"][data-module="rk"] .hero-roadmap strong,
[data-theme="corporate"][data-module="rk"] .curriculum-title strong {
      color: #0f172a;
    }

[data-theme="corporate"][data-module="rk"] .hero-panel h1 .hero-em {
      background: linear-gradient(90deg, #1d4ed8 0%, #0f766e 100%);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }

[data-theme="corporate"][data-module="rk"] .mini-pill,
[data-theme="corporate"][data-module="rk"] .card-link {
      background: rgba(255, 255, 255, .8);
      color: #334155;
      border-color: rgba(148, 163, 184, .45);
    }

[data-theme="corporate"][data-module="rk"] .card-copy span,
[data-theme="corporate"][data-module="rk"] .detail-box strong,
[data-theme="corporate"][data-module="rk"] .hero-kicker {
      color: #0f766e;
    }

[data-theme="corporate"][data-module="rk"] .roadmap-arrow,
[data-theme="corporate"][data-module="rk"] .lesson-chevron,
[data-theme="corporate"][data-module="rk"] .category-chevron {
      color: #475569;
    }

[data-theme="corporate"][data-module="rk"] .pe-detail-card,
[data-theme="corporate"][data-module="rk"] .pe-detail-note {
      background: rgba(255,255,255,.94);
    }

[data-theme="corporate"][data-module="rk"] .pe-detail-head h3,
[data-theme="corporate"][data-module="rk"] .pe-detail-note strong {
      color: #0f172a;
    }

[data-theme="corporate"][data-module="rk"] .pe-detail-head p,
[data-theme="corporate"][data-module="rk"] .pe-detail-note p,
[data-theme="corporate"][data-module="rk"] .pe-detail-note li {
      color: #334155;
    }

    @media (max-width: 1220px) {
      .hero-layout,
      .curriculum-head,
      .category-head {
        align-items: flex-start;
        grid-template-columns: 1fr;
        flex-direction: column;
      }

      .lesson-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .pe-detail-body {
        grid-template-columns: 1fr;
        height: auto;
        overflow: auto;
      }

      .pe-detail-sections {
        grid-template-columns: 1fr;
      }

      .pe-detail-sections .detail-box:nth-child(3),
      .pe-detail-sections .detail-box:nth-child(4),
      .pe-detail-sections .detail-box:nth-child(5) {
        grid-column: span 1;
      }
    }

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

    @media (max-width: 700px) {
      .page-shell {
        width: min(100vw - 20px, 1440px);
      }

      .hero-panel,
      .curriculum-body {
        padding: 18px;
      }

      .hero-stats {
        grid-template-columns: 1fr;
      }

      .lesson-grid {
        padding: 14px;
      }

      .pe-detail-shell {
        padding: 16px;
      }

      .pe-detail-card {
        width: min(100vw - 24px, 1200px);
        height: calc(100dvh - 24px);
        max-height: calc(100dvh - 24px);
      }

      .pe-detail-head {
        padding: 20px;
      }
    }

    @media (max-height: 900px) and (min-width: 1221px) {
      .pe-detail-head {
        padding: 14px 18px;
      }

      .pe-detail-head h3 {
        margin: 6px 0;
        font-size: clamp(1.55rem, 2.7vw, 2.15rem);
      }

      .pe-detail-head p {
        line-height: 1.48;
        font-size: .85rem;
      }

      .pe-detail-body {
        gap: 12px;
        padding: 10px 12px 12px;
        height: calc(100% - 116px);
      }

      .pe-detail-note {
        padding: 11px;
      }

      .pe-detail-note strong {
        margin-bottom: 8px;
        font-size: .96rem;
      }

      .pe-detail-note p,
      .pe-detail-note li {
        line-height: 1.44;
        font-size: .8rem;
      }

      .pe-detail-sections {
        gap: 8px;
      }

      .detail-box {
        padding: 10px;
      }

      .detail-box strong {
        margin-bottom: 6px;
        font-size: .74rem;
      }

      .detail-box p,
      .detail-box ul {
        line-height: 1.4;
        font-size: .79rem;
      }
    }

    /* RK-K-09: yayımlanmamış modül kartı — tema değişkenleriyle,
       yeni renk sabiti tanımlanmadan (CLAUDE.md §7). */
    .card-yakinda {
      display: inline-flex;
      align-items: center;
      gap: .3rem;
      margin-left: auto;
      padding: .2rem .5rem;
      border: 1px solid rgba(var(--primary-rgb), .34);
      border-radius: 999px;
      background: rgba(var(--primary-rgb), .1);
      color: var(--text2);
      font-size: clamp(.6rem, .55rem + .2vw, .68rem);
      font-weight: 700;
      letter-spacing: .06em;
      text-transform: uppercase;
      white-space: nowrap;
    }

    .lesson-card-yakinda {
      opacity: .74;
    }

    .lesson-card-yakinda .lesson-chevron {
      opacity: .4;
    }

    .lesson-card-yakinda .card-link {
      color: var(--text3);
    }

/* RK-M-02 (15 Eylül 2026): mobilde dokunma hedefi en az 44 px.
   Yalnız bu sayfaya ait denetimler büyütülür; header/footer ve ortak
   bh-* bileşenleri CLAUDE.md §9.1/§9.2 gereği dışarıda bırakılmıştır. */
@media (max-width: 767px) {
  .hero-btn {
    min-height: 44px;
    padding-block: .6rem;
  }
}

/* RK-K-07 (17 Eylül 2026): .page-shell 1440px'te sabitti ve
   .lesson-grid repeat(3, minmax(0,1fr)) SABİT 3 sütundu — açık uçlu
   ders listesi (modül başına değişken sayıda kart) büyük ekranda
   fazladan sütun kazanamıyordu. rk-konu.css'teki .rk-p1-ozet-grid
   emsaliyle aynı teknik: kap gevşetilir, sütun sayısı artırılır. */
@media (min-width: 1920px) {
  .page-shell {
    width: min(1760px, calc(100vw - 32px));
  }
  .lesson-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 3200px) {
  .page-shell {
    width: min(2200px, calc(100vw - 32px));
  }
  .lesson-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}