/* =============================================
   MOBILE RESPONSIVE — About Page
   ============================================= */

/* ── Tablet: up to 1024px ── */
@media (max-width: 1024px) {

  /* HERO */
  .about-hero {
    padding: 100px 20px 60px;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-img {
    max-width: 560px;
  }

  /* PROBLEM */
  .problem-section {
    padding: 80px 0;
  }

  .problem-title {
    font-size: 28px;
  }

  .problem-card {
    margin-left: 15px;
  }

  /* AUDIENCE */
  .audience-section {
    padding: 80px 0;
  }

  .audience-title {
    font-size: 28px;
  }

  /* SCIENCE */
  .science-section {
    padding: 80px 0;
  }

  .science-content h2 {
    font-size: 30px;
  }

  /* CTA */
  .cta-box {
    padding: 36px 40px;
  }

  .cta-image img {
    max-width: 260px;
  }
}

/* ── Tablet: up to 900px ── */
@media (max-width: 900px) {

  /* HERO */
  .about-hero {
    padding: 90px 20px 50px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-illustrations {
    margin-top: 40px;
  }

  .hero-img {
    max-width: 480px;
  }

  /* PROBLEM — stack columns */
  .problem-section {
    padding: 70px 0;
  }

  .problem-title {
    font-size: 26px;
    margin-top: 30px;
  }

  .problem-card {
    margin-left: 0;
  }

  /* AUDIENCE */
  .audience-section {
    padding: 70px 0;
  }

  .audience-title {
    font-size: 26px;
  }

  .audience-subtitle {
    margin-bottom: 40px;
    font-size: 13px;
  }

  /* SCIENCE */
  .science-section {
    padding: 70px 0;
  }

  .science-content h2 {
    font-size: 26px;
  }

  .science-desc {
    max-width: 100%;
  }

  /* CTA */
  .cta-section {
    padding: 70px 0;
  }

  .cta-content {
    flex-direction: column;
    align-items: flex-start;
    gap: 30px;
  }

  .cta-text {
    max-width: 100%;
  }

  .cta-text h2 {
    font-size: 24px;
  }

  .cta-image {
    width: 100%;
    display: flex;
    justify-content: center;
  }

  .cta-image img {
    max-width: 280px;
  }
}

/* ── Mobile: up to 768px ── */
@media (max-width: 768px) {

  /* HERO */
  .about-hero {
    padding: 80px 16px 44px;
  }

  .back-btn {
    top: 20px;
    left: 16px;
  }

  .back-btn img {
    width: 18px;
  }

  .hero-pill {
    font-size: 12px;
    padding: 5px 12px;
  }

  .hero-title {
    font-size: 24px;
    margin-bottom: 12px;
  }

  .hero-subtitle {
    font-size: 13px;
  }

  .hero-illustrations {
    margin-top: 32px;
  }

  .hero-img {
    max-width: 100%;
  }

  .hero-img.center {
    width: 150px;
  }

  /* PROBLEM */
  .problem-section {
    padding: 60px 0;
  }

  .problem-title {
    font-size: 22px;
    margin-top: 20px;
    margin-bottom: 14px;
  }

  .problem-text {
    font-size: 13px;
  }

  .problem-card {
    margin-left: 0;
    padding: 18px;
    gap: 14px;
  }

  .problem-icon {
    width: 30px;
    height: 30px;
  }

  .problem-card p {
    font-size: 13px;
  }

  /* AUDIENCE */
  .audience-section {
    padding: 60px 0;
  }

  .audience-title {
    font-size: 22px;
  }

  .audience-subtitle {
    font-size: 13px;
    margin-bottom: 32px;
  }

  .audience-card {
    padding: 14px;
  }

  .audience-card-title {
    font-size: 17px;
    gap: 10px;
  }

  .audience-icon {
    width: 48px;
    height: 48px;
    margin-left: 10px;
  }

  .audience-text {
    font-size: 13px;
  }

  /* SCIENCE */
  .science-section {
    padding: 60px 0;
  }

  .science-content h2 {
    font-size: 22px;
  }

  .science-desc {
    font-size: 13px;
    margin-bottom: 22px;
  }

  .science-list li {
    font-size: 13px;
    gap: 10px;
    margin-bottom: 16px;
  }

  .science-check {
    width: 20px;
    height: 20px;
    font-size: 11px;
  }

  /* CTA */
  .cta-section {
    padding: 60px 0;
  }

  .cta-box {
    padding: 28px 22px;
    border-radius: 10px;
  }

  .cta-text h2 {
    font-size: 20px;
    margin-bottom: 10px;
  }

  .cta-text p {
    font-size: 13px;
    margin-bottom: 16px;
  }

  .cta-btn {
    padding: 10px 22px;
    font-size: 13px;
  }

  .cta-image img {
    max-width: 240px;
  }
}

/* ── Small Mobile: up to 520px ── */
@media (max-width: 520px) {

  /* HERO */
  .about-hero {
    padding: 70px 14px 36px;
  }

  .hero-title {
    font-size: 21px;
  }

  .hero-subtitle {
    font-size: 12.5px;
  }

  .hero-img.center {
    width: 120px;
  }

  /* PROBLEM */
  .problem-label {
    font-size: 0.78rem;
    letter-spacing: 1.5px;
  }

  .problem-title {
    font-size: 20px;
  }

  .problem-card {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 16px;
    margin-bottom: 14px;
  }

  /* AUDIENCE */
  .audience-title {
    font-size: 20px;
  }

  .audience-card-title {
    font-size: 15px;
  }

  .audience-icon {
    width: 40px;
    height: 40px;
    margin-left: 6px;
  }

  /* SCIENCE */
  .science-content h2 {
    font-size: 20px;
    font-weight: 300;
  }

  /* CTA */
  .cta-box {
    padding: 22px 16px;
  }

  .cta-content {
    gap: 22px;
  }

  .cta-text h2 {
    font-size: 18px;
  }

  .cta-btn {
    width: 100%;
    text-align: center;
    padding: 12px 20px;
  }

  .cta-image img {
    max-width: 200px;
  }
}

/* ── Extra Small: up to 380px ── */
@media (max-width: 380px) {

  .hero-title {
    font-size: 19px;
  }

  .problem-title,
  .audience-title,
  .science-content h2,
  .cta-text h2 {
    font-size: 18px;
  }

  .hero-img.center {
    width: 100px;
  }

  .audience-icon {
    width: 36px;
    height: 36px;
  }
}