:root {
  /* Central design tokens for colors, spacing and repeated UI details. */
  --green-900: #0f8ec4;
  --green-700: #00aeef;
  --green-500: #0f8ec4;
  --green-100: #e8ebeb;
  --orange-600: #f6ab55;
  --orange-200: #f6ba77;
  --cream: #fff7ec;
  --off-white: #ffffff;
  --ink: #17242b;
  --muted: #52636b;
  --line: #e8ebeb;
  --white: #ffffff;
  --shadow: 0 18px 45px rgba(15, 142, 196, 0.15);
  --radius: 18px;
  --container: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: #ffffff;
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

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

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

.section {
  padding: 92px 0;
  scroll-margin-top: 92px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 1000;
  padding: 10px 14px;
  border-radius: 8px;
  background: var(--green-900);
  color: var(--white);
}

.skip-link:focus {
  top: 16px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(232, 235, 235, 0.9);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(16px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 78px;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--green-900);
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 62px;
  height: 46px;
  border-radius: 12px;
  background: var(--white);
  box-shadow: 0 8px 20px rgba(15, 142, 196, 0.1);
  overflow: hidden;
}

.brand-mark img {
  width: 52px;
  height: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0;
  margin: 0;
  list-style: none;
  color: var(--green-900);
  font-size: 0.94rem;
  font-weight: 700;
}

.nav-menu a {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 8px 11px;
  border-radius: 999px;
}

.nav-menu a:hover,
.nav-menu a:focus-visible {
  background: rgba(0, 174, 239, 0.12);
  outline: none;
}

.nav-menu .nav-cta {
  background: var(--green-900);
  color: var(--white);
}

.nav-menu .nav-cta:hover,
.nav-menu .nav-cta:focus-visible {
  background: var(--green-700);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--white);
}

.nav-toggle span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  border-radius: 999px;
  background: var(--green-900);
}

.hero {
  position: relative;
  overflow: hidden;
  padding-top: 78px;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.9) 0%, rgba(255, 255, 255, 0.78) 52%, rgba(255, 255, 255, 0.58) 100%),
    url("pattern-4.png") center / 760px auto,
    #00aeef;
}

.hero-grid,
.split,
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 56px;
}

.hero h1,
.section h2 {
  margin: 0;
  color: var(--green-900);
  font-size: clamp(2.25rem, 5vw, 4.8rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.section h2 {
  font-size: clamp(2rem, 3.4vw, 3.35rem);
  line-height: 1.08;
}

.hero-subtitle {
  margin: 18px 0 0;
  color: var(--orange-600);
  font-size: clamp(1.22rem, 2.2vw, 1.7rem);
  font-weight: 800;
}

.hero-text,
.section-heading p,
.about-section p,
.narrow-card p {
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-text {
  max-width: 640px;
  margin: 18px 0 0;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--orange-600);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.button-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 20px;
  border: 2px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  text-align: center;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  outline: none;
}

.button.primary {
  background: var(--green-900);
  color: var(--white);
}

.button.primary:hover,
.button.primary:focus-visible {
  background: var(--green-700);
}

.button.secondary {
  background: var(--orange-600);
  color: var(--white);
}

.button.secondary:hover,
.button.secondary:focus-visible {
  background: #c96123;
}

.button.ghost {
  border-color: var(--green-700);
  color: var(--green-900);
  background: rgba(255, 255, 255, 0.48);
}

.button.light {
  background: var(--cream);
  color: var(--green-900);
}

.hero-visual {
  position: relative;
  min-height: 520px;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.card-label {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--orange-600);
  font-size: 0.76rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-logo-card {
  position: absolute;
  right: 0;
  bottom: 34px;
  display: grid;
  place-items: center;
  width: min(100%, 560px);
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.hero-logo-card img {
  width: 100%;
  height: auto;
}

.section-heading {
  max-width: 790px;
  margin: 0 auto 42px;
  text-align: center;
}

.section-heading.align-left {
  margin: 0;
  text-align: left;
}

.two-columns,
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.card-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.feature-card,
.info-card,
.teacher-card,
.narrow-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
}

.feature-card {
  padding: 28px;
}

.feature-card h3,
.info-card h3,
.teacher-card h3 {
  margin: 14px 0 10px;
  color: var(--green-900);
  font-size: 1.28rem;
  line-height: 1.2;
}

.feature-card p,
.info-card p,
.feature-card li,
.info-card li {
  color: var(--muted);
}

.feature-card.compact {
  padding: 24px;
}

.icon-badge {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: var(--green-100);
  color: var(--green-900);
  font-weight: 900;
}

.icon-badge.orange {
  background: var(--orange-200);
}

.icon-badge.cream {
  background: var(--cream);
}

.soft-section {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.9), rgba(255, 247, 236, 0.92)),
    url("pattern-3.png") center / 520px auto,
    var(--orange-200);
}

.split {
  align-items: start;
}

.split.reverse .section-heading {
  order: 2;
}

.info-stack {
  display: grid;
  gap: 18px;
}

.info-card {
  padding: 24px;
}

.info-card h3 {
  margin-top: 0;
}

.check-list,
.material-list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.check-list li,
.material-list li {
  position: relative;
  padding-left: 28px;
  margin: 10px 0;
}

.check-list li::before,
.material-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.58em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange-600);
}

.tag-list,
.seal-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-list span,
.seal-list span {
  padding: 8px 12px;
  border: 1px solid rgba(47, 123, 102, 0.2);
  border-radius: 999px;
  background: var(--green-100);
  color: var(--green-900);
  font-size: 0.92rem;
  font-weight: 800;
}

.method-section {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.88), rgba(232, 235, 235, 0.9)),
    url("pattern-2.png") center / 560px auto,
    #0f8ec4;
}

.about-grid {
  align-items: start;
}

.teacher-card {
  overflow: hidden;
}

.teacher-photo {
  position: relative;
  min-height: 440px;
  background: linear-gradient(135deg, var(--green-100), var(--cream));
}

/* The real photo is used when available; otherwise the elegant placeholder is shown. */
.teacher-photo img {
  width: 100%;
  height: 100%;
  min-height: 440px;
  object-fit: cover;
}

.photo-placeholder {
  position: absolute;
  inset: 18px;
  display: none;
  place-items: center;
  border: 2px dashed rgba(47, 123, 102, 0.35);
  border-radius: 16px;
  color: var(--green-900);
  font-weight: 800;
  text-align: center;
}

.teacher-photo.is-placeholder img {
  display: none;
}

.teacher-photo.is-placeholder .photo-placeholder {
  display: grid;
}

.teacher-content {
  padding: 24px;
}

.teacher-content p {
  margin-bottom: 0;
}

.seal-list {
  margin-top: 28px;
}

.timeline {
  display: grid;
  gap: 14px;
  max-width: 850px;
  padding: 0;
  margin: 0 auto;
  list-style: none;
}

.timeline li {
  display: grid;
  grid-template-columns: 48px 1fr;
  align-items: center;
  gap: 16px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--white);
  color: var(--green-900);
  font-weight: 800;
  box-shadow: 0 10px 28px rgba(30, 79, 67, 0.08);
}

.timeline span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--orange-600);
  color: var(--white);
}

.center-action {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

.investment-section {
  padding-top: 0;
}

.narrow-card {
  max-width: 780px;
  padding: 34px;
  text-align: center;
}

.narrow-card h2 {
  margin-bottom: 14px;
}

.narrow-card .button {
  margin-top: 12px;
}

.faq-list {
  display: grid;
  gap: 12px;
  max-width: 920px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--white);
  overflow: hidden;
  box-shadow: 0 8px 22px rgba(30, 79, 67, 0.07);
}

.faq-question {
  position: relative;
  width: 100%;
  padding: 20px 54px 20px 22px;
  border: 0;
  background: transparent;
  color: var(--green-900);
  cursor: pointer;
  font: inherit;
  font-weight: 900;
  text-align: left;
}

.faq-question::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  color: var(--orange-600);
  font-size: 1.45rem;
  transform: translateY(-50%);
}

.faq-question[aria-expanded="true"]::after {
  content: "-";
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 220ms ease;
}

.faq-answer p {
  margin: 0;
  padding: 0 22px 20px;
  color: var(--muted);
}

.final-cta {
  background:
    linear-gradient(135deg, rgba(15, 142, 196, 0.94), rgba(0, 174, 239, 0.9)),
    url("pattern-2.png") center / 520px auto;
  color: var(--white);
  text-align: center;
}

.final-cta h2 {
  color: var(--white);
}

.final-cta p {
  max-width: 680px;
  margin: 16px auto 28px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.1rem;
}

.site-footer {
  padding: 34px 0 92px;
  background: #173a32;
  color: var(--white);
}

.footer-grid {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 24px;
}

.site-footer p,
.site-footer address {
  margin: 8px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-style: normal;
}

.site-footer a {
  color: var(--orange-200);
  font-weight: 800;
}

.floating-whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border-radius: 999px;
  background: var(--green-900);
  color: var(--white);
  font-weight: 900;
  box-shadow: 0 18px 36px rgba(30, 79, 67, 0.24);
}

.floating-whatsapp:hover,
.floating-whatsapp:focus-visible {
  background: var(--green-700);
  outline: none;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    inset: 78px 16px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--white);
    box-shadow: var(--shadow);
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-menu a {
    justify-content: center;
  }

  .hero-grid,
  .split,
  .about-grid {
    grid-template-columns: 1fr;
  }

  .split.reverse .section-heading {
    order: 0;
  }

  .hero-visual {
    min-height: 430px;
  }

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

@media (max-width: 700px) {
  .container {
    width: min(100% - 24px, var(--container));
  }

  .section {
    padding: 68px 0;
  }

  .nav {
    min-height: 70px;
  }

  .nav-menu {
    inset: 70px 12px auto;
  }

  .hero {
    padding-top: 56px;
  }

  .hero-grid,
  .split,
  .about-grid {
    gap: 34px;
  }

  .button-group,
  .button {
    width: 100%;
  }

  .two-columns,
  .card-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    min-height: 360px;
  }

  .hero-logo-card {
    right: 0;
    bottom: 48px;
    width: min(100%, 340px);
    padding: 0;
  }

  .chip-one {
    right: 16px;
    top: 128px;
  }

  .chip-two {
    left: 18px;
    bottom: 24px;
  }

  .feature-card,
  .info-card,
  .narrow-card {
    padding: 22px;
  }

  .teacher-photo,
  .teacher-photo img {
    min-height: 360px;
  }

  .timeline li {
    grid-template-columns: 42px 1fr;
    gap: 12px;
    padding: 16px;
  }

  .footer-grid {
    flex-direction: column;
  }

  .floating-whatsapp {
    left: 12px;
    right: 12px;
    bottom: 12px;
  }
}

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