:root {
  --navy: #12304a;
  --ink: #172331;
  --muted: #607086;
  --line: #d9e2ec;
  --soft: #f4f7fa;
  --gold: #c79a3b;
  --gold-dark: #9b7324;
  --white: #ffffff;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

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

a {
  color: inherit;
}

.topbar {
  background: var(--navy);
  color: var(--white);
  font-size: 0.92rem;
}

.topbar .wrap,
.nav .wrap,
.section,
.footer .wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.topbar .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 0;
  flex-wrap: wrap;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.nav .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 16px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: 0;
}

.brand-logo {
  width: 44px;
  height: 44px;
  object-fit: contain;
  display: block;
  flex: 0 0 auto;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
}

.footer-logo {
  width: 42px;
  height: 42px;
  object-fit: contain;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
}

.links {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 700;
  white-space: nowrap;
}

.links a:hover,
.links a.active {
  color: var(--navy);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--gold);
  border-radius: 8px;
  background: var(--gold);
  color: var(--navy);
  text-decoration: none;
  font-weight: 800;
  cursor: pointer;
}

.button.secondary {
  background: transparent;
  color: var(--white);
  border-color: rgba(255, 255, 255, 0.75);
}

.button.light {
  background: var(--white);
  border-color: var(--line);
  color: var(--navy);
}

.hero {
  min-height: 620px;
  display: grid;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(18, 48, 74, 0.92), rgba(18, 48, 74, 0.72), rgba(18, 48, 74, 0.22)),
    url("../sir-nelson-classroom.jpg") center / cover no-repeat;
  color: var(--white);
}

.hero-content {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 76px 0;
}

.eyebrow {
  color: var(--gold);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.82rem;
}

h1,
h2,
h3 {
  margin: 0 0 14px;
  line-height: 1.15;
  color: var(--navy);
}

.hero h1 {
  color: var(--white);
  font-size: clamp(2.3rem, 6vw, 4.8rem);
  max-width: 760px;
}

.hero p {
  max-width: 640px;
  font-size: 1.18rem;
  color: #e8eef4;
}

.hero-actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  flex-wrap: wrap;
}

.section {
  padding: 72px 0;
}

.section.compact {
  padding: 48px 0;
}

.section.soft {
  width: 100%;
  max-width: none;
  background: var(--soft);
  padding-left: max(16px, calc((100% - var(--max)) / 2));
  padding-right: max(16px, calc((100% - var(--max)) / 2));
}

.section-title {
  max-width: 720px;
}

.section-title p {
  color: var(--muted);
  font-size: 1.05rem;
}

.grid {
  display: grid;
  gap: 22px;
}

.grid.three {
  grid-template-columns: repeat(3, 1fr);
}

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

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
}

.card h3 {
  font-size: 1.25rem;
}

.promo-card {
  border-color: rgba(199, 154, 59, 0.5);
  background: #fffaf0;
}

.price {
  display: block;
  margin: 14px 0 4px;
  color: var(--navy);
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
}

.price-note {
  color: var(--gold-dark);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.82rem;
}

.badge {
  display: inline-flex;
  width: fit-content;
  margin-bottom: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  background: var(--gold);
  color: var(--navy);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.flyer {
  width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--line);
  display: block;
}

.program-banner {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--line);
  box-shadow: 0 18px 45px rgba(18, 48, 74, 0.14);
}

.pill-list {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.pill {
  display: inline-flex;
  padding: 7px 12px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--navy);
  font-weight: 800;
  font-size: 0.9rem;
}

.feature-photo,
.photo-card img {
  width: 100%;
  display: block;
  border-radius: 8px;
  border: 1px solid var(--line);
  object-fit: cover;
}

.feature-photo {
  aspect-ratio: 4 / 3;
}

.wide-photo {
  aspect-ratio: 16 / 9;
}

.photo-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.photo-card img {
  aspect-ratio: 4 / 3;
  border: 0;
  border-radius: 0;
}

.photo-card div {
  padding: 18px;
}

.photo-card h3 {
  margin-bottom: 8px;
}

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

.stat-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.stat {
  background: var(--white);
  padding: 24px;
}

.stat strong {
  display: block;
  color: var(--navy);
  font-size: 2rem;
}

.page-hero {
  background: var(--navy);
  color: var(--white);
}

.page-hero .section {
  padding: 70px 0;
}

.page-hero h1 {
  color: var(--white);
  font-size: clamp(2.1rem, 5vw, 4rem);
  max-width: 820px;
}

.page-hero p {
  max-width: 720px;
  color: #dce6ef;
  font-size: 1.12rem;
}

.list {
  padding-left: 20px;
  color: var(--muted);
}

.list li {
  margin: 8px 0;
}

.program-detail {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: start;
}

.panel {
  border-left: 4px solid var(--gold);
  padding: 22px 24px;
  background: var(--soft);
  border-radius: 0 8px 8px 0;
}

.classic-poster {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 28px;
  align-items: stretch;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid rgba(199, 154, 59, 0.45);
  background:
    linear-gradient(135deg, rgba(18, 48, 74, 0.96), rgba(18, 48, 74, 0.86)),
    linear-gradient(45deg, rgba(199, 154, 59, 0.2), transparent);
  box-shadow: 0 18px 45px rgba(18, 48, 74, 0.14);
}

.classic-poster-text {
  padding: 34px;
}

.classic-poster h2,
.classic-poster p {
  color: var(--white);
}

.classic-poster h2 {
  max-width: 720px;
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.classic-poster p {
  max-width: 720px;
  color: #e8eef4;
  font-size: 1.06rem;
}

.classic-poster-note {
  display: flex;
  flex-wrap: wrap;
  align-content: center;
  gap: 10px;
  padding: 30px;
  background: rgba(255, 255, 255, 0.08);
  border-left: 1px solid rgba(255, 255, 255, 0.16);
}

.classic-poster-note strong {
  width: 100%;
  color: var(--white);
}

.classic-poster-note span {
  display: inline-flex;
  padding: 7px 11px;
  border-radius: 999px;
  background: var(--gold);
  color: var(--navy);
  font-weight: 800;
  font-size: 0.88rem;
}

.book-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.book-list article {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.book-list h3 {
  margin-bottom: 6px;
  font-size: 1rem;
}

.book-list p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.reader-reflection {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.reader-reflection summary {
  color: var(--navy);
  cursor: pointer;
  font-weight: 800;
  font-size: 0.9rem;
}

.reader-reflection p {
  margin-top: 8px;
  font-size: 0.9rem;
}

.reader-reflection a {
  display: inline-flex;
  margin-top: 8px;
  color: var(--gold-dark);
  font-weight: 800;
  text-decoration: none;
}

.video-section {
  display: grid;
  gap: 20px;
}

.video-feature {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.video-embed {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0d2235;
  box-shadow: 0 18px 45px rgba(18, 48, 74, 0.14);
}

.video-embed iframe,
.tiktok-card iframe,
.tiktok-card blockquote {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-placeholder,
.tiktok-placeholder {
  display: grid;
  place-items: center;
  min-height: 100%;
  padding: 24px;
  color: var(--white);
  text-align: center;
}

.video-placeholder strong,
.tiktok-placeholder strong {
  display: block;
  margin-bottom: 8px;
  color: var(--gold);
  font-size: 1.1rem;
}

.video-placeholder span,
.tiktok-placeholder span {
  display: block;
  max-width: 420px;
  color: #dce6ef;
}

.tiktok-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 26px;
}

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

.tiktok-card {
  position: relative;
  overflow: hidden;
  aspect-ratio: 9 / 16;
  min-height: 420px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(160deg, rgba(18, 48, 74, 0.96), rgba(13, 34, 53, 0.98)),
    var(--navy);
}

.video-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 18px;
}

.whatsapp-button {
  width: fit-content;
}

.social-links,
.social-contact {
  margin-top: 22px;
}

.social-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.social-links a {
  display: inline-flex;
  padding: 10px 14px;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 8px;
  color: var(--white);
  text-decoration: none;
  font-weight: 800;
}

.floating-whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 10;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 10px 16px;
  border-radius: 999px;
  background: #25d366;
  color: #08351b;
  box-shadow: 0 12px 28px rgba(8, 53, 27, 0.24);
  font-weight: 800;
  text-decoration: none;
}

.form {
  display: grid;
  gap: 16px;
}

.form-section {
  display: grid;
  gap: 14px;
  padding-top: 6px;
}

.form-section + .form-section {
  border-top: 1px solid var(--line);
  padding-top: 22px;
}

.form-section h3 {
  margin-bottom: 0;
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 16px;
  color: var(--muted);
}

.check-grid label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-weight: 400;
}

.check-grid input {
  width: auto;
  min-height: auto;
}

.notice {
  padding: 18px 20px;
  border-radius: 8px;
  background: #fffaf0;
  border: 1px solid rgba(199, 154, 59, 0.45);
}

label {
  display: grid;
  gap: 6px;
  font-weight: 700;
  color: var(--navy);
}

input,
select,
textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: var(--white);
}

textarea {
  min-height: 130px;
  resize: vertical;
}

.quote {
  font-size: 1.05rem;
}

.quote cite {
  display: block;
  margin-top: 16px;
  color: var(--navy);
  font-style: normal;
  font-weight: 800;
}

.cta {
  background: var(--navy);
  color: var(--white);
}

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

.cta p {
  color: #dce6ef;
}

.footer {
  background: #0d2235;
  color: var(--white);
  padding: 38px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 28px;
}

.footer a,
.footer p {
  color: #d7e2ec;
}

.footer a {
  display: block;
  text-decoration: none;
  margin: 6px 0;
}

@media (max-width: 850px) {
  .nav .wrap {
    align-items: flex-start;
    flex-direction: column;
  }

  .links {
    gap: 12px;
    width: 100%;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  .hero {
    min-height: 560px;
    background:
      linear-gradient(180deg, rgba(18, 48, 74, 0.94), rgba(18, 48, 74, 0.7)),
      url("../sir-nelson-classroom.jpg") center / cover no-repeat;
  }

  .grid.three,
  .grid.two,
  .check-grid,
  .stat-band,
  .classic-poster,
  .book-list,
  .tiktok-grid,
  .tiktok-grid.two-videos,
  .program-detail,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .classic-poster-note {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.16);
  }
}

@media (max-width: 520px) {
  .topbar .wrap,
  .section,
  .nav .wrap,
  .footer .wrap,
  .hero-content {
    width: min(100% - 24px, var(--max));
  }

  .section {
    padding: 52px 0;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .tiktok-card {
    min-height: 360px;
  }

  .floating-whatsapp {
    right: 12px;
    bottom: 12px;
    min-height: 42px;
    padding: 9px 13px;
    font-size: 0.9rem;
  }
}