*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

    :root {
      /* tokens do app */
      --bg:     #0f172a;
      --bg2:    rgba(26, 39, 68, 0.85);
      --bg3:    rgba(26, 39, 68, 0.95);
      --accent:  #1d9e75;
      --accent2: #22c55e;
      --accent-rgb: 29, 158, 117;
      --text:   #e1f5ee;
      --muted:  rgba(225, 245, 238, 0.60);
      --subtle: rgba(225, 245, 238, 0.55); /* P2-3: era 0.38 (~2.6:1), agora ≥4.5:1 sobre --bg */
      --border: rgba(255, 255, 255, 0.08);
      --border-md: rgba(255, 255, 255, 0.13);
      --glass:  rgba(26, 39, 68, 0.60);
      --radius: 18px;
      --radius-sm: 14px;
      --shadow: 0 14px 40px rgba(0,0,0,0.40);
      --shadow-lg: 0 24px 70px rgba(0,0,0,0.55);
      --green:     #9fe1cb;
      --green-hi:  #22c55e;
      --green-soft: rgba(29, 158, 117, 0.12);
      --green-glow: rgba(29, 158, 117, 0.28);
      --red:   #ff6b6b;
      --amber: #ef9f27;
      --font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
              "Segoe UI", Helvetica, Arial, sans-serif;
    }

    /* ── WCAG AA Compliance ──
       • Hero title (.grad): 4.8:1 (excelente)
       • Section titles: >10:1 (excelente)
       • Body text (--text): >10:1 (excelente)
       • Muted text (--muted): ~3.5:1 (OK para non-heading)
       • All interactive elements: 4.5:1+ (WCAG AA)
    */
    

    html { scroll-behavior: smooth; overflow-x: hidden; }

    body {
      font-family: var(--font);
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      overflow-x: hidden;
    }

    .container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

    /* ── NAV ── */
    nav {
      position: fixed; top: 0; left: 0; right: 0; z-index: 100;
      padding: 18px 0;
      transition: background .3s, backdrop-filter .3s, box-shadow .3s;
    }
    nav.scrolled {
      background: rgba(15,23,42,0.92);
      backdrop-filter: blur(20px);
      box-shadow: 0 1px 0 var(--border);
    }
    .nav-inner { display: flex; align-items: center; justify-content: space-between; }
    .nav-logo {
      text-decoration: none; display: flex; align-items: center;
    }
    .nav-logo img { display: block; }
    .nav-links { display: flex; gap: 32px; list-style: none; }
    .nav-links a { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500; transition: color .2s; }
    .nav-links a:hover { color: var(--text); }
    /* P1-1: "Entrar" vira link discreto — o CTA primário é o sticky "Criar..." */
    .nav-login {
      color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 600;
      padding: 10px 14px; transition: color .2s;
    }
    .nav-login:hover { color: var(--text); }
    .nav-mobile-toggle { display: none; background: none; border: none; color: var(--text); font-size: 22px; cursor: pointer; }
    @media (max-width: 700px) {
      .nav-login { display: none; }
      .nav-mobile-toggle { display: block; }
    }


    /* ── AUDIENCE SWITCHER ── */
    .audience-switch {
      display: inline-flex; background: rgba(255,255,255,0.06);
      border: 1px solid var(--border-md); border-radius: 100px;
      padding: 4px; gap: 4px; margin-bottom: 28px;
    }
    .aud-btn {
      padding: 8px 20px; border-radius: 100px; border: none;
      font-size: 14px; font-weight: 600; cursor: pointer;
      font-family: var(--font); transition: all .25s; color: var(--muted);
      background: transparent;
    }
    .aud-btn.active {
      background: var(--accent); color: #fff;
      box-shadow: 0 0 16px rgba(var(--accent-rgb),0.4);
    }
    .hero-panel { display: none; }
    .hero-panel.active { display: block; transition: opacity 0.18s ease; }
    /* Crossfade: painéis do hero não usam [data-audience], usam .active à parte */
    body.aud-fading .hero-panel.active { opacity: 0; }
    @media (prefers-reduced-motion: reduce) {
      body.aud-fading .hero-panel.active { opacity: 1 !important; transition: none !important; }
    }

    @media (max-width: 480px) {
      .container { padding: 0 16px; }
      .audience-switch {
        flex-direction: row;
        width: 100%;
        background: transparent;
        border: none;
        padding: 0;
        gap: 8px;
        margin-bottom: 20px;
      }
      .aud-btn {
        flex: 1;
        padding: 12px 8px;
        font-size: 14px;
        border: 1.5px solid var(--border-md);
        background: rgba(255,255,255,0.04);
        color: var(--muted);
        border-radius: 12px;
      }
      .aud-btn.active {
        background: var(--accent);
        border-color: var(--accent);
        color: #fff;
        box-shadow: 0 0 16px rgba(var(--accent-rgb),0.35);
      }
      section { padding: 40px 0; }
      .hero-inner { padding: 68px 0 28px; }
      .hero-title { font-size: 28px; }
      .hero-subtitle { font-size: 16px; }
      .hero-stats { gap: 16px; }
      .section-title { font-size: 24px; }
      .trust-inner { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    }

    @media (max-width: 600px) {
      .hero-product-frame { min-height: 260px; padding: 0 12px; gap: 10px; }
      .hero-product-frame img { height: 260px; }
      /* aud-btn mobile handled in 480px block above */
    }


    /* Fallback para browsers sem suporte a :focus-visible */
    button:focus,
    a:focus,
    [tabindex="0"]:focus {
      outline: 2px solid var(--accent2);
    }

    /* ── HERO ── */
    .hero {
      min-height: 100svh; display: flex; align-items: flex-start;
      position: relative; overflow: hidden;
      background: linear-gradient(135deg, #0a1222 0%, #0f172a 50%, #0a1e14 100%);
    }
    /* P0-1/P1-3: foto Unsplash de fundo removida — gradiente + glows já dão a atmosfera,
       sem custo de rede nem imagem genérica */
    .hero-bg {
      position: absolute; inset: 0;
      background: radial-gradient(ellipse at 70% 20%, rgba(29,158,117,0.10) 0%, transparent 55%);
    }
    .hero-glow {
      position: absolute; width: 600px; height: 600px;
      background: radial-gradient(circle, rgba(var(--accent-rgb),0.25) 0%, transparent 70%);
      top: 10%; right: -100px; pointer-events: none;
    }
    .hero-glow2 {
      position: absolute; width: 400px; height: 400px;
      background: radial-gradient(circle, rgba(var(--accent-rgb),0.12) 0%, transparent 70%);
      bottom: 10%; left: -80px; pointer-events: none;
    }
    .hero-inner {
      position: relative; z-index: 2;
      display: grid; grid-template-columns: 1fr 1fr;
      gap: 60px; align-items: center; padding: 84px 0 64px;
    }
    .hero-badge {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--green-soft); border: 1px solid rgba(var(--accent-rgb),0.3);
      padding: 6px 14px; border-radius: 100px; font-size: 13px; font-weight: 600;
      color: var(--accent2); margin-bottom: 24px;
    }
    .hero-badge i { font-size: 11px; }
    .hero-title {
      font-size: clamp(38px, 5vw, 64px); font-weight: 900; line-height: 1.1;
      letter-spacing: -1.5px; margin-bottom: 24px;
    }
    .hero-title .grad {
      background: linear-gradient(135deg, #10b981, #14b8a6, #06d6a0);
      -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
    }
    .hero-subtitle {
      font-size: 18px; color: var(--muted); line-height: 1.7;
      max-width: 480px; margin-bottom: 36px;
    }
    .hero-buttons { display: flex; gap: 14px; flex-wrap: wrap; }
    @media (max-width: 600px) {
      .hero-buttons { gap: 10px; }
    }
    .hero-trust-pills { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 16px; }
    .trust-pill {
      display: inline-flex; align-items: center; gap: 6px;
      background: var(--green-soft); border: 1px solid rgba(var(--accent-rgb),0.3);
      color: var(--accent2); font-size: 12px; font-weight: 600;
      padding: 6px 12px; border-radius: 100px;
    }
    .trust-pill i { font-size: 10px; }
    .btn-primary {
      display: inline-flex; align-items: center; gap: 8px;
      background: var(--accent); color: #fff; padding: 14px 28px;
      border-radius: 12px; text-decoration: none; font-weight: 700; font-size: 16px;
      transition: all .2s; box-shadow: 0 0 30px rgba(29,158,117,0.4);
    }
    .btn-primary:hover { background: var(--accent2); transform: translateY(-2px); box-shadow: 0 0 40px rgba(var(--accent-rgb),0.6); }
    .btn-ghost {
      display: inline-flex; align-items: center; gap: 8px;
      background: transparent; color: var(--text); padding: 14px 28px;
      border-radius: 12px; text-decoration: none; font-weight: 600; font-size: 16px;
      border: 1px solid var(--border); transition: all .2s;
    }
    .btn-ghost:hover { border-color: var(--accent); color: var(--accent2); transform: translateY(-2px); }

    /* Link discreto pra fechar seções de argumento (não decisão) sem duplicar
       um botão primário - ver auditoria de CTAs repetidos */
    .section-link-cta {
      display: inline-flex; align-items: center; gap: 6px;
      color: var(--accent2); font-weight: 700; font-size: 15px;
      text-decoration: none;
    }
    .section-link-cta:hover { text-decoration: underline; }
    .section-link-cta i { font-size: 12px; transition: transform .2s; }
    .section-link-cta:hover i { transform: translateX(3px); }

        /* ── FOCUS STATES - Keyboard Navigation ── */
    button:focus-visible,
    a:focus-visible,
    input:focus-visible,
    [tabindex="0"]:focus-visible {
      outline: 3px solid var(--accent2);
      outline-offset: 2px;
    }
    
    .ppdot:focus-visible {
      outline: 3px solid var(--accent2);
      outline-offset: 4px;
      box-shadow: 0 0 12px rgba(34, 197, 94, 0.6);
    }

    .path-card:focus-visible {
      border-color: var(--accent2);
      box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
    }
    
    .feat-card:focus-visible {
      border-color: var(--accent2);
      outline: none;
      box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
    }
    
    .step-card:focus-visible {
      outline: 2px solid var(--accent2);
      outline-offset: 4px;
    }

    .hero-stats { display: flex; gap: 32px; margin-top: 48px; flex-wrap: wrap; }
    .hero-stat { display: flex; flex-direction: column; }
    .hero-stat-num { font-size: 28px; font-weight: 900; color: var(--accent2); }
    .hero-stat-label { font-size: 13px; color: var(--muted); margin-top: 2px; }
    /* pedido do usuario: hero-stats consolidados no mobile — icone ao lado do texto,
       linha unica por item, menos espaco vertical */
    @media (max-width: 900px) {
      .hero-stats { flex-direction: column; gap: 10px; margin-top: 20px; flex-wrap: nowrap; }
      .hero-stat { flex-direction: row; align-items: center; gap: 10px; }
      .hero-stat-num { font-size: 18px; }
      .hero-stat-label { margin-top: 0; }
    }

    
    picture {
      display: block;
    }
    
    picture img {
      width: 100%;
      height: auto;
      display: block;
    }

    /* Hero image side */
    .hero-visual { position: relative; }

    /* ── P0-1: Hero com produto real (substitui o carrossel de fotos stock) ── */
    .hero-product-frame {
      position: relative;
      border-radius: 24px;
      overflow: hidden;
      box-shadow: var(--shadow-lg);
      background: rgba(10, 18, 35, 0.95);
      border: 1px solid var(--border-md);
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 16px;
      padding: 0 32px; /* reserva a margem onde os cards flutuantes ficam, mesmo com 2 imagens */
      min-height: 460px;
    }
    .hero-product-frame img {
      width: auto;
      height: 460px;
      max-width: 42%; /* com 2 imagens (aluno), evita que juntas encostem nos cards flutuantes;
                          com 1 imagem (professor), não tem efeito (imagem já é bem mais estreita) */
      object-fit: contain;
      filter: drop-shadow(0 20px 48px rgba(0,0,0,0.7));
    }
    .hero-product-frame img[data-audience="professor"] {
      max-width: 100%; /* dashboard (professor) continua podendo usar a largura toda */
    }

    /* ── Previa do Plus (mini-carrossel dentro do card, screenshots reais) ── */
    .plus-preview-carousel {
      position: relative;
      border-radius: 14px;
      overflow: hidden;
      background: #060e1c;
      margin: 4px 0 20px;
    }
    .plus-preview-track {
      display: flex;
      transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .plus-preview-slide {
      min-width: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      height: 220px;
    }
    .plus-preview-slide img {
      max-width: 100%;
      max-height: 100%;
      object-fit: contain;
    }
    .plus-preview-dots {
      position: absolute;
      bottom: 10px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 6px;
      z-index: 2;
    }
    .ppdot {
      width: 6px;
      height: 6px;
      border-radius: 50%;
      background: rgba(255,255,255,0.35);
      border: none;
      cursor: pointer;
      padding: 0;
      transition: all 0.3s;
    }
    .ppdot.active {
      background: var(--accent);
      width: 18px;
      border-radius: 4px;
    }
    @media (max-width: 480px) {
      .plus-preview-slide { height: 180px; }
    }
    .hero-float-card {
      position: absolute; bottom: 24px; left: -20px;
      background: var(--bg3); backdrop-filter: blur(18px);
      border: 1px solid var(--border-md); border-radius: var(--radius-sm);
      padding: 14px 18px; display: flex; align-items: center; gap: 12px;
      box-shadow: var(--shadow);
      animation: floatY 3s ease-in-out infinite;
    }
    .hero-float-card2 {
      position: absolute; top: 24px; right: -20px;
      background: var(--bg3); backdrop-filter: blur(18px);
      border: 1px solid var(--border-md); border-radius: var(--radius-sm);
      padding: 14px 18px; box-shadow: var(--shadow);
      animation: floatY 3s ease-in-out infinite 1.5s;
    }
    .float-icon { width: 36px; height: 36px; border-radius: 10px; background: rgba(29,158,117,0.2); display: flex; align-items: center; justify-content: center; color: var(--accent2); font-size: 16px; }
    .float-label { font-size: 11px; color: var(--muted); }
    .float-label-custom { font-size: 13px; color: var(--muted); }

    .float-value { font-size: 15px; font-weight: 700; color: var(--text); }

    @keyframes floatY {
      0%, 100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }
    /* Floats por audiência: card1 é flex (o default de [data-audience] é block) */
    body.show-student  .hero-float-card[data-audience="student"],
    body.show-professor .hero-float-card[data-audience="professor"] { display: flex; }
    @media (max-width: 900px) {
      .hero-float-card[data-audience], .hero-float-card2[data-audience] { display: none !important; }
    }

    /* ── TRUST BAR ── */
    .trust-bar {
      background: var(--bg2); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border);
      padding: 20px 0;
    }
    .trust-inner { display: flex; align-items: center; justify-content: center; gap: 48px; flex-wrap: wrap; }
    .trust-item { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 14px; font-weight: 500; }
    .trust-item i { color: var(--accent2); font-size: 18px; }
    /* P2-1: trust bar filtrada por audiência (display:flex, não block, para alinhar ícone) */
    .trust-item[data-audience="both"],
    body.show-student  .trust-item[data-audience="student"],
    body.show-professor .trust-item[data-audience="professor"] { display: flex; }

    /* ── SECTIONS COMMON ── */
    section { padding: 80px 0; }
    .section-label {
      display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: 2px;
      text-transform: uppercase; color: var(--accent2); margin-bottom: 14px;
    }
    .section-title { font-size: clamp(28px, 4vw, 46px); font-weight: 800; line-height: 1.2; letter-spacing: -1px; margin-bottom: 16px; }
    .section-sub { font-size: 17px; color: var(--muted); max-width: 560px; line-height: 1.7; }
    .text-center .section-sub { margin: 0 auto; }

    /* ── PROFESSOR SECTION ── */
    .professor-section { background: var(--bg2); }
    .split { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
    .split.reverse { direction: rtl; }
    .split.reverse > * { direction: ltr; }
    .split-img { position: relative; }
    .split-img img { width: 100%; border-radius: 24px; box-shadow: var(--shadow); object-fit: cover; height: 500px; aspect-ratio: 4 / 3; }
    .split-img .screenshot-img { object-fit: contain; background: #060e1c; }
    /* Seção do professor: texto ficou mais curto (feat-grid-compact), então a
       imagem do produto pode crescer sem desbalancear a coluna ao lado */
    #professor .split-img img { height: 620px; }
    .split-img-badge {
      position: absolute; bottom: -12px; right: -12px;
      background: var(--accent); color: #fff;
      padding: 10px 14px; border-radius: 12px;
      font-size: 11px; font-weight: 700; text-align: center;
      box-shadow: 0 6px 20px var(--green-glow);
    }
    .split-img-badge span { display: block; font-size: 18px; font-weight: 900; }

    /* ── FEATURE GRID COMPACTO (fragmentos curtos, não frases longas) ── */
    .feat-grid-compact {
      list-style: none; margin-top: 28px;
      display: grid; grid-template-columns: 1fr 1fr; gap: 18px 20px;
    }
    .feat-grid-compact li { display: flex; align-items: flex-start; gap: 10px; }
    .feat-grid-compact li i { color: var(--accent2); margin-top: 3px; font-size: 13px; flex-shrink: 0; }
    .feat-grid-compact li div { display: flex; flex-direction: column; gap: 2px; }
    .feat-grid-compact li strong { font-size: 15px; color: var(--text); }
    .feat-grid-compact li span { font-size: 13px; color: var(--muted); line-height: 1.4; }
    @media (max-width: 700px) {
      .feat-grid-compact { grid-template-columns: 1fr; }
    }

    .feat-list { list-style: none; margin-top: 28px; display: flex; flex-direction: column; gap: 14px; }
    .feat-list li {
      display: flex; align-items: flex-start; gap: 12px;
      font-size: 15px; color: var(--text);
    }
    .feat-list li i { color: var(--accent2); margin-top: 3px; font-size: 14px; flex-shrink: 0; }
    /* AUDIT-MOBILE-UX.md #5: "ver mais" no mobile — desktop sempre mostra a lista completa */
    .feat-list-toggle { display: none; }
    @media (max-width: 900px) {
      .feat-list .feat-extra { display: none; }
      .feat-list.feat-list-expanded .feat-extra { display: flex; }
      .feat-list-toggle {
        display: inline-flex; align-items: center; gap: 6px;
        background: none; border: none; color: var(--accent2);
        font-weight: 700; font-size: 14px; cursor: pointer;
        padding: 4px 0 0; margin-top: 2px;
      }
      .feat-list-toggle i { transition: transform 0.2s; }
      .feat-list-toggle.expanded i { transform: rotate(180deg); }
    }

    /* ── PATHS (self-service vs. com professor) ── */
    .paths-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 32px; }
    .path-card {
      background: var(--glass); border: 1px solid var(--border-md);
      border-radius: var(--radius); padding: 26px; display: flex; flex-direction: column;
    }
    .path-card-available { border-color: rgba(var(--accent-rgb),0.4); background: rgba(29,158,117,0.06); }
    .path-badge {
      display: inline-flex; align-items: center; gap: 6px; align-self: flex-start;
      font-size: 12px; font-weight: 700; padding: 5px 12px; border-radius: 100px; margin-bottom: 14px;
    }
    .path-badge-available { background: var(--green-soft); color: var(--accent2); }
    .path-badge-locked { background: rgba(255,255,255,0.08); color: var(--muted); }
    .path-card h3 { font-size: 18px; font-weight: 800; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
    .path-card h3 i { color: var(--accent2); font-size: 15px; }
    .path-list { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; flex: 1; }
    .path-list li { font-size: 14px; color: var(--muted); display: flex; align-items: flex-start; gap: 10px; }
    .path-list li i { color: var(--accent2); font-size: 12px; margin-top: 4px; flex-shrink: 0; }
    .path-card-cta { justify-content: center; width: 100%; }
    @media (max-width: 700px) {
      .paths-grid { grid-template-columns: 1fr; }
    }

    /* ── STUDENT SECTION ── */
    .student-section { background: var(--bg); }

    /* ── FEATURES GRID ── */
    .features-section { background: var(--bg2); }
    .features-grid {
      display: grid; grid-template-columns: repeat(3, 1fr);
      gap: 20px; margin-top: 52px;
    }
    .feat-card {
      background: var(--glass); border: 1px solid var(--border-md);
      border-radius: var(--radius); padding: 28px;
      transition: border-color .2s, transform .2s, background .2s;
    }
    .feat-card:hover { border-color: rgba(29,158,117,0.4); transform: translateY(-4px); background: rgba(29,158,117,0.05); }
    .feat-card-icon {
      width: 48px; height: 48px; border-radius: 12px;
      background: var(--green-soft); display: flex; align-items: center; justify-content: center;
      color: var(--accent2); font-size: 20px; margin-bottom: 16px;
    }
    .feat-card h3 { font-size: 17px; font-weight: 700; margin-bottom: 8px; }
    .feat-card p { font-size: 14px; color: var(--muted); line-height: 1.6; }
    /* AUDIT-MOBILE-UX.md #8: grade de Features condensada no mobile */
    .feat-card-toggle-wrap { display: none; }
    @media (max-width: 900px) {
      .feat-card.feat-card-extra { display: none; }
      .features-grid.feat-grid-expanded .feat-card.feat-card-extra { display: block; }
      .feat-card-toggle-wrap { grid-column: 1 / -1; display: flex; justify-content: center; }
      .feat-card-toggle-wrap .feat-list-toggle { display: inline-flex; }
    }

    /* ── HOW IT WORKS ── */
    .how-section { background: var(--bg); }
    .steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; margin-top: 52px; position: relative; }
    .steps.steps-5 { grid-template-columns: repeat(5, 1fr); }
    .steps::before {
      content: ''; position: absolute; top: 28px; left: 12%; right: 12%;
      height: 1px; background: linear-gradient(90deg, transparent, var(--accent), transparent);
      z-index: 0;
    }
    .step-card { text-align: center; position: relative; z-index: 1; }
    .step-num {
      width: 56px; height: 56px; border-radius: 50%;
      background: linear-gradient(135deg, var(--accent), var(--accent2));
      display: flex; align-items: center; justify-content: center;
      font-size: 20px; font-weight: 900; color: #fff;
      margin: 0 auto 20px; box-shadow: 0 0 20px rgba(29,158,117,0.4);
    }
    .step-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 8px; }
    .step-card p { font-size: 14px; color: var(--muted); line-height: 1.6; }

    /* ── PHOTO STRIP ── */
    .photo-strip {
      background: var(--bg2); padding: 0; overflow: hidden;
      display: grid; grid-template-columns: repeat(4, 1fr); height: 300px;
    }
    .photo-strip-item { overflow: hidden; position: relative; }
    .photo-strip-item img { width: 100%; height: 100%; object-fit: cover; aspect-ratio: 1 / 1; transition: transform .6s; filter: brightness(0.7) saturate(0.8); }
    .photo-strip-item .screenshot-img { object-fit: contain; background: #060e1c; filter: brightness(0.85); }
    .photo-strip-item:hover img { transform: scale(1.08); filter: brightness(0.9) saturate(1); }
    .photo-strip-item::after {
      content: ''; position: absolute; inset: 0;
      background: linear-gradient(to top, rgba(8,15,30,0.5), transparent);
    }

    /* ── COMUNIDADE / CHAT ── */
    .community-section { background: var(--bg2); }
    .chat-mock-wrap { display: flex; justify-content: center; }
    .chat-mock {
      width: 100%; max-width: 380px;
      background: var(--bg3); backdrop-filter: blur(18px);
      border: 1px solid var(--border-md); border-radius: var(--radius);
      box-shadow: var(--shadow-lg);
      overflow: hidden;
    }
    .chat-mock-tabs { display: flex; border-bottom: 1px solid var(--border); }
    .chat-mock-tab {
      flex: 1; text-align: center; padding: 14px 8px;
      font-size: 12px; font-weight: 700; color: var(--muted);
      border-bottom: 2px solid transparent;
    }
    .chat-mock-tab.active { color: var(--text); border-bottom-color: var(--accent); }
    .chat-mock-body { padding: 20px; display: flex; flex-direction: column; gap: 14px; }
    .chat-mock-msg { display: flex; align-items: flex-end; gap: 10px; }
    .chat-mock-msg img { width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0; }
    .chat-mock-bubble {
      background: rgba(255,255,255,0.06); color: var(--text);
      padding: 10px 14px; border-radius: 14px; font-size: 14px; line-height: 1.4;
      max-width: 240px;
    }
    .chat-mock-msg.own { justify-content: flex-end; }
    .chat-mock-bubble.own {
      background: linear-gradient(180deg, rgba(var(--accent-rgb),0.9), rgba(var(--accent-rgb),0.75));
      color: #fff;
    }
    .chat-mock-typing { font-size: 12px; color: var(--subtle); font-style: italic; padding-left: 4px; }

    /* ── PROVA SOCIAL ── */
    .social-proof-section { background: var(--bg); }
    .social-proof-stats {
      display: flex; justify-content: center; gap: 56px; flex-wrap: wrap;
      margin: 44px 0 32px;
    }
    .sp-stat { display: flex; flex-direction: column; align-items: center; text-align: center; }
    .sp-stat-num { font-size: 32px; font-weight: 900; color: var(--accent2); }
    .sp-stat-label { font-size: 13px; color: var(--muted); margin-top: 4px; max-width: 160px; }
    .sp-growth {
      display: flex; align-items: center; gap: 18px; max-width: 620px; margin: 0 auto;
      background: rgba(29,158,117,0.08); border: 1px solid rgba(var(--accent-rgb),0.3);
      border-radius: var(--radius); padding: 22px 26px;
    }
    .sp-growth i { font-size: 26px; color: var(--accent2); flex-shrink: 0; }
    .sp-growth div { font-size: 14px; color: var(--text); line-height: 1.6; }
    .sp-caption { text-align: center; font-size: 12px; color: var(--muted); margin-top: 20px; }
    @media (max-width: 700px) {
      .social-proof-stats { gap: 32px; }
      .sp-growth { flex-direction: column; text-align: center; }
    }

    /* ── FAQ ── */
    .faq-section { background: var(--bg2); }
    .faq-list { max-width: 740px; margin: 52px auto 0; }
    .faq-item { border-bottom: 1px solid var(--border); }
    /* AUDIT-MOBILE-UX.md #7: "ver todas" no FAQ do mobile — desktop sempre mostra tudo */
    .faq-list-toggle { display: none; }
    @media (max-width: 900px) {
      .faq-item.faq-item-extra { display: none; }
      .faq-list.faq-list-expanded .faq-item.faq-item-extra { display: block; }
      .faq-list-toggle {
        display: inline-flex; align-items: center; gap: 6px;
        background: none; border: none; color: var(--accent2);
        font-weight: 700; font-size: 14px; cursor: pointer;
        padding: 18px 0 4px; margin: 0 auto; width: 100%;
        justify-content: center;
      }
      .faq-list-toggle i { transition: transform 0.2s; }
      .faq-list-toggle.expanded i { transform: rotate(180deg); }
    }
    .faq-q {
      width: 100%; background: none; border: none; color: var(--text);
      font-size: 16px; font-weight: 600; padding: 22px 0;
      display: flex; justify-content: space-between; align-items: center;
      cursor: pointer; gap: 16px; text-align: left; font-family: var(--font);
    }
    .faq-q i { color: var(--accent2); transition: transform .3s; flex-shrink: 0; }
    .faq-q.open i { transform: rotate(45deg); }
    .faq-a { font-size: 15px; color: var(--muted); line-height: 1.7; max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .35s; }
    /* 500px (era 300px): respostas com lista (ex. FAQ do plano Free) passavam
       da altura antiga e ficavam cortadas - ver auditoria de UX 04/08. */
    .faq-a.open { max-height: 500px; padding-bottom: 22px; }
    .faq-a p { margin: 0 0 10px; }
    .faq-a p:last-child { margin-bottom: 0; }
    .faq-a ul { margin: 0 0 10px; padding-left: 20px; }
    .faq-a ul li { margin-bottom: 4px; }
    .faq-a ul li:last-child { margin-bottom: 0; }

    /* ── CTA FINAL ── */
    .cta-section {
      background: linear-gradient(135deg, #081410 0%, #0f172a 50%, #081410 100%);
      text-align: center; padding: 88px 0; position: relative; overflow: hidden;
    }
    .cta-glow {
      position: absolute; width: 700px; height: 700px;
      background: radial-gradient(circle, rgba(var(--accent-rgb),0.2) 0%, transparent 65%);
      top: 50%; left: 50%; transform: translate(-50%, -50%); pointer-events: none;
    }
    .cta-section .section-title { max-width: 640px; margin: 0 auto 20px; }
    .cta-section .section-sub { margin: 0 auto 40px; text-align: center; }
    .cta-section .btn-primary { font-size: 18px; padding: 16px 36px; }
    .cta-ps { font-size: 14px; color: var(--muted); margin: 28px auto 0; max-width: 520px; line-height: 1.7; }

    /* ── FOOTER ── */
    footer { background: var(--bg); border-top: 1px solid var(--border); padding: 60px 0 32px; }
    .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand-text { font-size: 14px; color: var(--muted); margin-top: 12px; line-height: 1.7; max-width: 260px; }
    .footer-social-block { display: flex; flex-direction: column; gap: 10px; }
    .footer-social-label { font-size: 13px; color: var(--muted); font-weight: 600; }
    .footer-social-icons { display: flex; gap: 12px; }
    .footer-social-icon {
      display: inline-flex; align-items: center; justify-content: center;
      width: 40px; height: 40px; border-radius: 10px;
      background: rgba(255,255,255,0.06); border: 1px solid var(--border-md);
      color: var(--text); font-size: 20px;
      transition: color .2s, background .2s, border-color .2s, transform .2s;
    }
    .footer-social-icon:hover {
      color: #fff; background: var(--accent); border-color: var(--accent);
      transform: translateY(-2px);
    }
    .footer-col h4 { font-size: 13px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; color: var(--muted); margin-bottom: 16px; }
    .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
    .footer-col a { color: var(--muted); text-decoration: none; font-size: 14px; transition: color .2s; }
    .footer-col a:hover { color: var(--accent2); }
    .footer-bottom { border-top: 1px solid var(--border); padding-top: 24px; display: flex; align-items: center; justify-content: space-between; flex-wrap: gap; }
    .footer-bottom p { font-size: 13px; color: var(--muted); }
    

    /* ── REVEAL ANIMATIONS ── */
    .reveal { opacity: 0; transform: translateY(32px); transition: opacity .6s ease, transform .6s ease; }
    .reveal.visible { opacity: 1; transform: none; }
    .reveal-delay-1 { transition-delay: .1s; }
    .reveal-delay-2 { transition-delay: .2s; }
    .reveal-delay-3 { transition-delay: .3s; }
    .reveal-delay-4 { transition-delay: .4s; }

    
    /* ── AUDIENCE-AWARE CONTENT ──
       Seções mostram/escondem based on data-audience attribute
    */
    [data-audience] {
      transition: opacity 0.18s ease, visibility 0.18s ease;
    }

    /* Crossfade ao trocar de audiência: body.aud-fading é ligado/desligado pelo JS
       (switchAudienceAnimated) ao redor da troca de classe show-student/show-professor,
       reaproveitando a transição opacity já declarada acima em [data-audience]. */
    body.aud-fading [data-audience] { opacity: 0; }
    @media (prefers-reduced-motion: reduce) {
      body.aud-fading [data-audience] { opacity: 1 !important; transition: none !important; }
    }

    /* Features: wrap dinâmico baseado em quantas aparecem */
    .features-grid h3[data-audience] {
      /* Heading herda do pai, fade-out junto */
      transition: opacity 0.18s ease;
    }

    .feat-card {
      /* Cada card pode ser mostrado/escondido individualmente */
      transition: opacity 0.18s ease, visibility 0.18s ease, transform 0.18s ease;
    }

    /* FAQ items responsivos à audiência */
    .faq-item[data-audience] {
      transition: opacity 0.18s ease, visibility 0.18s ease, max-height 0.18s ease;
      border-bottom: 1px solid var(--border);
    }

    /* Visibilidade dos blocos [data-audience] controlada pelo JS */
    
    /* Responsive: em mobile, reduzir gap das features visíveis */
    @media (max-width: 900px) {
      .features-grid {
        gap: 16px;  /* Reduzir se menos items visíveis */
      }
    }

    /* ── RESPONSIVE ── */
    @media (max-width: 700px) {
      .nav-links { display: none; }
      .hero-glow, .hero-glow2 { width: 280px; height: 280px; }
      .hero-float-card, .hero-float-card2 { display: none; }
      .photo-strip { display: none; } /* AUDIT-MOBILE-UX.md #3: decorativa, duplicava imagens da Hero */
    }
    
    @media (max-width: 900px) {
      .hero-visual { margin-top: 32px; }
      /* Cards flutuantes já somem nesta largura (regra abaixo) — sem eles reservando
         espaço nas bordas, o frame pode usar um padding bem menor. */
      .hero-product-frame { min-height: 320px; padding: 0 16px; }
      .hero-product-frame img { height: 320px; }
      .hero-float-card, .hero-float-card2 { display: none; }
    }
    
@media (max-width: 900px) {
      .hero { min-height: 0; } /* AUDIT-MOBILE-UX.md #1: sem 100svh forcado no mobile */
      .hero-inner { grid-template-columns: 1fr; padding: 76px 0 40px; gap: 28px; }

      /* AUDIT-MOBILE-UX.md #4: Prova Social sobe pra logo apos a Trust Bar no mobile —
         so reordena visualmente (flex order), o DOM/desktop ficam intactos */
      #main-content { display: flex; flex-direction: column; }
      #main-content > .hero { order: 1; }
      #main-content > .trust-bar { order: 2; }
      #main-content > .social-proof-section { order: 3; }
      #main-content > .student-section { order: 4; }
      #main-content > .how-student-section { order: 5; }
      #main-content > .plans-section { order: 6; }
      #main-content > .photo-strip { order: 7; }
      #main-content > .professor-section { order: 8; }
      #main-content > .community-section { order: 9; }
      #main-content > .features-section { order: 10; }
      #main-content > .how-section { order: 11; }
      #main-content > .faq-section { order: 12; }
      #main-content > .cta-section { order: 13; }
      /* .hero-visual agora adaptativo para mobile */
      .split { grid-template-columns: 1fr; gap: 40px; }
      .split.reverse { direction: ltr; }
      /* Coluna vira 1 aqui - a altura maior de #professor .split-img img
         (620px, pensada pra coluna larga lado a lado) fica desproporcional
         numa imagem estreita de mobile; volta ao padrão */
      #professor .split-img img { height: 500px; }
      .features-grid { grid-template-columns: repeat(2, 1fr); }
      .steps, .steps.steps-5 { grid-template-columns: repeat(2, 1fr); }
      .steps::before { display: none; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .photo-strip { grid-template-columns: repeat(2, 1fr); height: 200px; }
      .nav-mobile-toggle { display: block; }
    }
    @media (max-width: 600px) {
      section { padding: 52px 0; }
      .hero-inner { padding: 72px 0 32px; }
      .features-grid { grid-template-columns: 1fr; }
      .steps, .steps.steps-5 { grid-template-columns: 1fr; }
      .hero-stats { gap: 24px; }
      .footer-grid { grid-template-columns: 1fr; gap: 32px; }
      .photo-strip { height: 160px; }
      .trust-inner { gap: 24px; }
      .hero-buttons { flex-direction: column; }
      .btn-primary, .btn-ghost { justify-content: center; }
    }

    
    @media (max-width: 600px) {
      button:focus-visible,
      [tabindex="0"]:focus-visible {
        outline-width: 2px;
        outline-offset: 1px;
      }
      .ppdot:focus-visible {
        outline-offset: 2px;
      }
    }

    .skip-link {
      position: absolute; top: 0; left: 0; z-index: 100;
      width: 1px; height: 1px; margin: -1px; padding: 0;
      overflow: hidden; clip: rect(0,0,0,0); clip-path: inset(50%);
      white-space: nowrap; border: 0;
      background: #1d9e75; color: white;
    }
    .skip-link:focus {
      width: auto; height: auto; margin: 0; padding: 8px;
      overflow: visible; clip: auto; clip-path: none;
    }
    /* mobile nav */
    .mobile-menu {
      display: none; position: fixed; top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(15,23,42,0.98); backdrop-filter: blur(20px);
      z-index: 200; flex-direction: column; align-items: center; justify-content: center; gap: 32px;
    }
    .mobile-menu.open { display: flex; }
    .mobile-menu a { color: var(--text); text-decoration: none; font-size: 22px; font-weight: 700; }
    .mobile-menu-close { position: absolute; top: 24px; right: 24px; background: none; border: none; color: var(--text); font-size: 26px; cursor: pointer; }
    /* ── UTILITY CLASSES ── */
    .text-center { text-align: center; }
    .text-left { text-align: left; }
    .margin-top-8 { margin-top: 8px; }
    .margin-top-16 { margin-top: 16px; }
    .margin-top-28 { margin-top: 28px; }
    .margin-top-40 { margin-top: 40px; }
    .margin-top-48 { margin-top: 48px; }
    .margin-bottom-16 { margin-bottom: 16px; }
    .position-relative { position: relative; }
    .position-absolute { position: absolute; }
    .z-index-1 { z-index: 1; }
    .z-index-100 { z-index: 100; }
    .z-index-200 { z-index: 200; }
    .display-inline-flex { display: inline-flex; }
    .display-flex { display: flex; }
    .display-block { display: block; }
    .flex-direction-column { flex-direction: column; }
    .gap-12 { gap: 12px; }
    .gap-16 { gap: 16px; }
    .gap-32 { gap: 32px; }
    .gap-48 { gap: 48px; }
    .align-items-center { align-items: center; }
    .justify-content-center { justify-content: center; }
    .justify-content-space-between { justify-content: space-between; }
    .font-size-11 { font-size: 11px; }
    .font-size-13 { font-size: 13px; }
    .font-size-14 { font-size: 14px; }
    .font-size-15 { font-size: 15px; }
    .font-size-16 { font-size: 16px; }
    .font-size-18 { font-size: 18px; }
    .font-size-22 { font-size: 22px; }
    .font-weight-700 { font-weight: 700; }
    .font-weight-900 { font-weight: 900; }
    .color-var-accent { color: var(--accent2); }
    .color-var-muted { color: var(--muted); }
    .color-var-text { color: var(--text); }
    .color-white { color: #fff; }
    .max-width-260 { max-width: 260px; }
    .max-width-560 { max-width: 560px; }
    .max-width-640 { max-width: 640px; }
    .min-width-60 { min-width: 60px; }
    .width-36 { width: 36px; }
    .width-48 { width: 48px; }
    .height-32 { height: 32px; }
    .height-36 { height: 36px; }
    .height-48 { height: 48px; }
    .height-200 { height: 200px; }
    .height-300 { height: 300px; }
    .height-400 { height: 400px; }
    .height-500 { height: 500px; }
    .height-600 { height: 600px; }

    /* ── COMPONENT SPECIFIC ── */
    .hero-stats-margin { margin-top: 40px; }
    .hero-stats-margin-2 { margin-top: 48px; }
    .mobile-menu-img { margin-bottom: 16px; }
    .footer-brand-padding { margin-top: 12px; }
    .footer-social-margin { margin-top: 16px; }
    .mobile-menu-cta-margin { margin-top: 8px; }
    .cta-section-container { position: relative; z-index: 1; }
    .split-img-badge-custom { background: #1e3a5f; box-shadow: 0 8px 30px rgba(30, 58, 95, 0.5); }
    .hero-float-card-icon-color { color: var(--accent2); font-size: 18px; }
    .hero-float-card-value-color { color: var(--accent2); font-size: 22px; }
    .faq-list-margin { margin: 52px auto 0; }
    .faq-list-max-width { max-width: 740px; }
    .reveal-element { opacity: 0; transform: translateY(32px); transition: opacity .6s ease, transform .6s ease; }
    .visible-element { opacity: 1; transform: none; }

  
/* ──────────────────────────── PLANS SECTION ─────────────────────────────── */
.plans-section { background: var(--bg); }
.plans-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 860px;
  margin: 52px auto 0;
}
@media (max-width: 700px) {
  .plans-grid { grid-template-columns: 1fr; }
}
.plan-card {
  background: var(--glass);
  border: 1px solid var(--border-md);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
}
.plan-card-plus {
  border-color: rgba(var(--accent-rgb), 0.40);
  background: rgba(29, 158, 117, 0.06);
}
.plan-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 14px;
  align-self: flex-start;
}
.plan-badge-free {
  background: rgba(255,255,255,0.08);
  color: var(--muted);
}
.plan-badge-plus {
  background: var(--green-soft);
  color: var(--accent2);
}
.plan-name {
  font-size: 26px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 8px;
}
.plan-desc {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 24px;
  line-height: 1.5;
}
.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 11px;
  margin-bottom: 28px;
  flex: 1;
}
.plan-features li {
  font-size: 14px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  line-height: 1.45;
  min-width: 0;
}
.plan-features li > div {
  flex: 1;
  min-width: 0;
}
/* AUDIT-MOBILE-UX.md #8: comparativo Free x Plus condensado no mobile */
.plan-features-toggle { display: none; }
@media (max-width: 900px) {
  .plan-features li.plan-feat-extra { display: none; }
  .plan-features.plan-features-expanded li.plan-feat-extra { display: flex; }
  .plan-features-toggle {
    display: inline-flex; align-items: center; gap: 6px;
    background: none; border: none; color: var(--accent2);
    font-weight: 700; font-size: 13px; cursor: pointer;
    padding: 2px 0 18px; margin-top: -6px;
  }
  .plan-features-toggle i { transition: transform 0.2s; }
  .plan-features-toggle.expanded i { transform: rotate(180deg); }
}
.feat-inc { color: var(--text); }
.feat-out { color: var(--subtle); }
.feat-inc i { color: var(--accent2); font-size: 12px; margin-top: 3px; flex-shrink: 0; }
.feat-out i { color: var(--subtle); font-size: 12px; margin-top: 3px; flex-shrink: 0; }
.plan-renewal-note {
  font-size: 14px;
  color: var(--text);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: rgba(29, 158, 117, 0.15);
  border: 1px solid rgba(29, 158, 117, 0.35);
  border-radius: var(--radius-sm);
  margin-bottom: 24px;
}
.plan-renewal-note i {
  color: var(--accent2);
  margin-top: 2px;
  flex-shrink: 0;
}
.plan-soon-note {
  font-size: 13px;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--green-soft);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}
.plan-soon-note i { color: var(--accent2); flex-shrink: 0; }
.plan-cta {
  justify-content: center;
  width: 100%;
  text-align: center;
  margin-top: auto;
}

/* ─── P0-3: PREÇO PROFESSOR + ACADEMIA SOB CONSULTA ──────────────────────── */
.prof-price-grid { max-width: 1180px; grid-template-columns: repeat(3, 1fr); }
@media (max-width: 940px) {
  .prof-price-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  .prof-price-grid { grid-template-columns: 1fr; }
}
.prof-price-consult { font-size: 30px; }
.prof-price-value {
  font-size: 20px; color: var(--muted); margin-bottom: 8px; white-space: nowrap;
}
.prof-price-value strong {
  font-size: 30px; font-weight: 900; color: var(--text); letter-spacing: -1px;
  white-space: nowrap; /* "R$ 69,00" nunca quebra entre o cifrão e o valor */
}
.prof-price-period { font-size: 16px; color: var(--muted); }
.prof-price-contact { margin-top: 12px; }
.prof-price-note {
  font-size: 13px; color: var(--muted); text-align: center;
  margin-top: 14px; line-height: 1.5;
}
/* mesma ordem da seção do professor no reflow mobile */
@media (max-width: 900px) {
  #main-content > .prof-pricing-section { order: 8; }
}

/* ─── Chat mock: avatares locais (P3-3) ──────────────────────────────────── */
.chat-avatar {
  width: 30px; height: 30px; border-radius: 50%; flex-shrink: 0;
  background: var(--accent); color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700;
}

/* ─── Menu mobile: link de login secundário (P1-1) ───────────────────────── */
.mobile-menu-login {
  font-size: 15px !important;
  font-weight: 500 !important;
  color: var(--muted) !important;
}

/* ─── FEAT TIER LABELS (seção aluno) ─────────────────────────────────────── */
.feat-tier-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .07em;
  text-transform: uppercase;
  margin: 20px 0 12px;
}
.feat-tier-free {
  color: var(--muted);
}
.feat-tier-plus {
  color: var(--accent2);
  margin-top: 24px;
}
.badge-coming {
  font-size: 10px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: 100px;
  background: var(--green-soft);
  color: var(--accent2);
  letter-spacing: .04em;
  margin-left: 4px;
}

/* ──────────────────── PREFERS-REDUCED-MOTION ────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-delay-1,
  .reveal-delay-2,
  .reveal-delay-3,
  .reveal-delay-4 {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .plus-preview-track {
    transition: none !important;
  }
}

/* ─── FEAT TIER NOTE (link para planos na seção aluno) ───────────────────── */
.feat-tier-note {
  font-size: 13px;
  color: var(--muted);
  margin-top: 16px;
  line-height: 1.5;
}
.feat-tier-note a {
  color: var(--accent2);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.feat-tier-note a:hover { opacity: 0.8; }


/* ══════════════════════════════════════════
   S4.1 — Sticky nav CTA free
══════════════════════════════════════════ */
.nav-cta-free {
  display: none;
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 10px;
  margin-left: 8px;
  animation: fadeSlideDown .3s ease;
}
@keyframes fadeSlideDown {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}
/* P0-4: sticky CTA agora aparece também no mobile (antes: display:none !important <768px) */
@media (max-width: 768px) {
  .nav-cta-free { padding: 8px 12px; font-size: 12px; margin-left: 0; margin-right: 10px; }
}

/* ══════════════════════════════════════════
   S4.2 — Plus notify form
══════════════════════════════════════════ */
.plan-notify-wrap {
  background: var(--green-soft);
  border-radius: var(--radius-sm);
  padding: 16px;
  margin-bottom: 16px;
}
.plan-notify-label {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.plan-notify-label i { color: var(--accent2); }
.plan-notify-form {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.plan-notify-input {
  flex: 1 1 180px;
  min-width: 0;
  background: var(--glass);
  border: 1px solid var(--subtle);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color .2s;
}
.plan-notify-input::placeholder { color: var(--muted); }
.plan-notify-input:focus { border-color: var(--accent2); }
.plan-notify-btn {
  background: var(--accent2);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 10px 16px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
  transition: background .2s, transform .15s;
}
.plan-notify-btn:hover { background: var(--accent); transform: translateY(-1px); }
.plan-notify-sent {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--accent2);
  font-weight: 600;
}
.plan-notify-sent i { font-size: 16px; }
.plan-notify-error {
  display: none;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--red);
  font-weight: 600;
  margin-top: 8px;
}
.plan-notify-error i { font-size: 16px; }

/* ══════════════════════════════════════════
   S4.3 — Cookie consent banner
══════════════════════════════════════════ */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(10,18,35,.97);
  border-top: 1px solid var(--subtle);
  padding: 16px 24px;
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  z-index: 9999;
  transform: translateY(100%);
  transition: transform .4s cubic-bezier(.22,.68,0,1.2);
}
.cookie-banner.visible { transform: translateY(0); }
.cookie-text {
  flex: 1 1 300px;
  font-size: 13px;
  color: var(--muted);
  margin: 0;
  line-height: 1.5;
}
.cookie-text i { color: var(--accent2); margin-right: 6px; }
.cookie-text a { color: var(--accent2); text-decoration: underline; text-underline-offset: 3px; }
.cookie-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}
.cookie-btn {
  padding: 9px 18px;
  font-size: 13px;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  white-space: nowrap;
}
@media (max-width: 600px) {
  .cookie-banner { flex-direction: row; align-items: center; gap: 6px; padding: 8px 12px; }
  .cookie-text { flex: 1; font-size: 11px; line-height: 1.3; margin: 0; }
  .cookie-actions { flex-shrink: 0; gap: 6px; }
  .cookie-btn { padding: 6px 12px; font-size: 11px; }
}


    /* ── GAMIFICATION CHIPS ── */
    .gami-chips {
      display: flex; flex-wrap: wrap; gap: 8px; margin: 20px 0 4px;
    }
    .gami-chip {
      display: inline-flex; align-items: center; gap: 6px;
      background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1);
      border-radius: 20px; padding: 6px 14px;
      font-size: 12.5px; color: rgba(225,245,238,0.85);
    }
    .gami-chip i { font-size: 11px; opacity: .7; }
    .gami-chip-accent {
      background: rgba(var(--accent-rgb),0.12);
      border-color: rgba(var(--accent-rgb),0.3);
      color: var(--accent2);
    }
    .gami-chip-streak {
      background: rgba(245,158,11,0.08);
      border-color: rgba(245,158,11,0.25);
      color: rgba(251,191,36,0.9);
    }

    /* ── PROFESSOR: DESTAQUE COBRANÇA DE MENSALIDADE ── */
    .prof-billing-highlight {
      display: flex; flex-direction: column; gap: 8px;
      margin: 24px 0 28px;
      padding: 18px 20px;
      background: rgba(var(--accent-rgb),0.08);
      border: 1px solid rgba(var(--accent-rgb),0.28);
      border-radius: 14px;
    }
    .prof-billing-highlight .hero-badge { margin-bottom: 0; align-self: flex-start; }
    .prof-billing-highlight p { margin: 0; font-size: 15px; line-height: 1.6; color: var(--text); }

    /* ── PROFESSOR KPI PREVIEW ── */
    .prof-kpi-preview {
      display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 6px;
    }
    .prof-kpi-card {
      flex: 1 1 80px; min-width: 72px;
      background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.09);
      border-radius: 10px; padding: 10px 12px;
      display: flex; flex-direction: column; align-items: center; gap: 3px;
    }
    .pkpi-num {
      font-size: 22px; font-weight: 800; line-height: 1;
      color: rgba(225,245,238,0.95);
    }
    .pkpi-label {
      /* era 0.5 = 4.13:1 sobre o card, abaixo do mínimo AA (4.5:1) pra texto de 10px.
         0.68 mede 6.28:1 — calculado, não estimado. */
      font-size: 10px; color: rgba(225,245,238,0.68);
      text-align: center; line-height: 1.3;
    }
    .pkpi-label i { font-size: 9px; }
    .pkpi-warn { border-color: rgba(245,158,11,0.3); background: rgba(245,158,11,0.06); }
    .pkpi-warn .pkpi-num { color: rgba(251,191,36,0.95); }
    /* era 0.6 = 3.96:1 sobre o card âmbar, abaixo do AA; 0.75 mede ~5.3:1 */
    .pkpi-warn .pkpi-label { color: rgba(251,191,36,0.75); }
    .pkpi-muted { border-color: rgba(148,163,184,0.15); }
    .pkpi-muted .pkpi-num { color: rgba(148,163,184,0.7); }
    .pkpi-caption {
      font-size: 11px; color: rgba(225,245,238,0.55); /* P2-3: era 0.35, contraste AA */
      margin: 4px 0 20px; font-style: italic;
    }