:root {
  --primary:        #0678BF;
  --primary-dark:   #074973;
  --primary-light:  #E5F3FC;
  --secondary:      #49B1F2;
  --accent:         #F2E63D;
  --accent-orange:  #F27507;
  --bg:             #F5F9FC;
  --card:           #FFFFFF;
  --text:           #16232B;
  --text-muted:     #5C7285;
  --border:         #DCE7F0;
  --shadow:         0 2px 16px rgba(7,73,115,.10);
  --shadow-lg:      0 12px 40px rgba(7,73,115,.18);
  --radius:         14px;
  --radius-sm:      8px;
  --header-h:       72px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: 'Poppins', 'Noto Sans SC', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

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

h1, h2, h3 { line-height: 1.25; margin: 0; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  border-radius: var(--radius-sm);
  padding: 13px 22px;
  font-family: inherit;
  font-size: .98rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform .1s ease, background-color .15s ease, opacity .15s ease;
  white-space: nowrap;
}

.btn:active { transform: scale(.98); }

.btn-sm { padding: 9px 16px; font-size: .88rem; }
.btn-lg { padding: 15px 28px; font-size: 1rem; }

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }

.btn-outline {
  background: transparent;
  color: var(--primary-dark);
  border: 1.5px solid var(--primary-dark);
}
.btn-outline:hover { background: var(--primary-light); }

.btn-light { background: #fff; color: var(--primary-dark); }
.btn-light:hover { background: var(--accent); }

/* ── Navbar ── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 249, 252, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.navbar-inner {
  max-width: 1160px;
  margin: 0 auto;
  height: var(--header-h);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.brand-logo {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.brand-name {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--primary-dark);
}

.brand-name em { font-style: normal; color: var(--primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  margin: 0 auto;
}

.nav-links a {
  font-size: .95rem;
  font-weight: 500;
  color: var(--text);
  transition: color .15s ease;
}

.nav-links a:hover { color: var(--primary); }

.navbar-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}

/* ── Hero ── */
.hero {
  padding: 64px 24px 80px;
  overflow: hidden;
}

.hero-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 48px;
  align-items: center;
}

.eyebrow {
  color: var(--primary);
  font-weight: 600;
  font-size: .9rem;
  letter-spacing: .03em;
  margin: 0 0 14px;
}

.hero-copy h1 {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin-bottom: 18px;
}

.hero-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin: 0 0 30px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  border: 1px solid var(--border);
}

.hero-logo {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  margin: 0 auto;
}

/* ── Sections ── */
.section { padding: 76px 24px; }

.section-alt { background: var(--card); }

.section-inner {
  max-width: 1160px;
  margin: 0 auto;
}

.section-eyebrow {
  color: var(--primary);
  font-weight: 600;
  font-size: .85rem;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin: 0 0 10px;
}

.section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-dark);
  max-width: 720px;
}

.section-lead {
  color: var(--text-muted);
  font-size: 1.02rem;
  max-width: 640px;
  margin: 14px 0 0;
}

/* ── About grid ── */
.about-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.about-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 22px;
}

.about-icon { font-size: 1.8rem; }

.about-item h3 {
  font-size: 1.05rem;
  margin: 14px 0 8px;
}

.about-item p {
  color: var(--text-muted);
  font-size: .92rem;
  margin: 0;
}

/* ── Program grid ── */
.program-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.program-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
}

.program-card h3 {
  font-size: 1.15rem;
  color: var(--primary-dark);
}

.program-tag {
  display: inline-block;
  margin: 10px 0 12px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .75rem;
  font-weight: 600;
}

.program-card p:last-child {
  color: var(--text-muted);
  font-size: .92rem;
  margin: 0;
}

.program-card-highlight {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.program-card-cta {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  color: #fff;
}

.program-card-cta h3 { color: #fff; }

.program-card-cta p {
  color: rgba(255,255,255,.85);
  margin: 10px 0 18px;
  font-size: .92rem;
}

.program-card-cta .btn-primary {
  background: var(--accent);
  color: var(--primary-dark);
}

.program-card-cta .btn-primary:hover { background: #fff; }

/* ── Pricing ── */
.pricing-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: transform .18s ease, box-shadow .18s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
}

.pricing-card-highlight {
  border-color: var(--primary);
  border-width: 2px;
  box-shadow: var(--shadow-lg);
}

.pricing-card-highlight:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.pricing-badge {
  position: absolute;
  top: -13px;
  left: 28px;
  background: var(--accent-orange);
  color: #fff;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .02em;
  padding: 5px 14px;
  border-radius: 999px;
  margin: 0;
  box-shadow: 0 2px 8px rgba(0,0,0,.2);
}

.pricing-name {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  margin: 0;
}

.pricing-price {
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--primary-dark);
  margin: 12px 0 10px;
  line-height: 1;
}

.pricing-price span {
  font-size: .85rem;
  font-weight: 500;
  color: var(--text-muted);
}

.pricing-desc {
  color: var(--text-muted);
  font-size: .9rem;
  margin: 0 0 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 26px;
  flex-grow: 1;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .9rem;
  color: var(--text);
  padding: 6px 0;
}

.pricing-features li::before {
  content: '✓';
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  font-size: .72rem;
  font-weight: 700;
}

.pricing-note {
  margin-top: 28px;
  font-size: .82rem;
  color: var(--text-muted);
  text-align: center;
}

/* ── Trial class ── */
.trial-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.trial-copy { padding-top: 8px; }

.trial-highlights {
  list-style: none;
  padding: 0;
  margin: 26px 0 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.trial-highlights li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: .92rem;
  font-weight: 500;
}

.trial-highlights li::before {
  content: '';
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
}

.trial-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  padding: 32px 28px;
}

.trial-note {
  margin: 14px 0 0;
  font-size: .8rem;
  color: var(--text-muted);
  text-align: center;
}

/* ── Form (dipakai Trial Class) ── */
.form-group { margin-bottom: 18px; }

.form-group label {
  display: block;
  font-weight: 600;
  font-size: .9rem;
  margin-bottom: 6px;
  color: var(--text);
}

.req { color: var(--primary); }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: var(--card);
  transition: border-color .15s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group input.invalid { border-color: var(--primary); }

.field-error {
  display: block;
  min-height: 1.1em;
  font-size: .8rem;
  color: var(--primary);
  margin-top: 4px;
}

.error-banner {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  font-size: .9rem;
  margin-bottom: 18px;
}

/* ── Why grid ── */
.why-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-number {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  -webkit-text-stroke: 1.5px var(--primary-dark);
}

.why-item h3 {
  font-size: 1.05rem;
  margin: 10px 0 8px;
}

.why-item p {
  color: var(--text-muted);
  font-size: .92rem;
  margin: 0;
}

/* ── Testimoni ── */
.testimoni-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.testimoni-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
}

.testimoni-card p:first-child {
  font-size: .96rem;
  margin: 0 0 16px;
}

.testimoni-name {
  color: var(--text-muted);
  font-size: .85rem;
  font-weight: 600;
  margin: 0;
}

/* ── Alumni tracker ── */
.alumni-stats-grid {
  margin-top: 44px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-tile {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  text-align: center;
}

.stat-number {
  font-size: 1.9rem;
  font-weight: 800;
  color: var(--primary);
  margin: 0 0 4px;
  line-height: 1;
}

.stat-label {
  font-size: .82rem;
  color: var(--text-muted);
  margin: 0;
}

.alumni-grid {
  margin-top: 24px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.alumni-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  text-align: center;
}

.alumni-avatar {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .95rem;
}

.alumni-name {
  font-weight: 700;
  font-size: 1rem;
  margin: 0 0 2px;
}

.alumni-program {
  font-size: .8rem;
  font-weight: 600;
  color: var(--primary);
  margin: 0 0 12px;
}

.alumni-status {
  font-size: .88rem;
  color: var(--text-muted);
  margin: 0;
}

/* ── CTA banner ── */
.cta-banner {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary) 55%, var(--secondary));
  padding: 64px 24px;
}

.cta-banner-inner {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
  color: #fff;
}

.cta-banner-inner h2 {
  font-size: 1.9rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.cta-banner-inner p {
  color: rgba(255,255,255,.88);
  margin: 0 0 28px;
}

/* ── Footer ── */
.footer {
  background: #1A1A1A;
  color: rgba(255,255,255,.75);
  padding: 56px 24px 24px;
}

.footer-inner {
  max-width: 1160px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-brand { max-width: 280px; }

.footer-logo {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 12px;
}

.footer .brand-name { color: #fff; }
.footer .brand-name em { color: var(--accent); }

.footer-tagline {
  font-size: .88rem;
  margin: 12px 0 0;
  color: rgba(255,255,255,.6);
}

.footer-col h4 {
  color: #fff;
  font-size: .92rem;
  margin: 0 0 16px;
  text-transform: uppercase;
  letter-spacing: .03em;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col a {
  font-size: .9rem;
  color: rgba(255,255,255,.7);
  transition: color .15s ease;
}

.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  max-width: 1160px;
  margin: 40px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,.12);
  font-size: .82rem;
  color: rgba(255,255,255,.5);
}

/* ── Responsive ── */
@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .hero-card { padding: 24px; }
  .hero-logo { width: 160px; height: 160px; }
  .about-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
  .program-grid, .testimoni-grid, .pricing-grid, .alumni-grid { grid-template-columns: repeat(2, 1fr); }
  .alumni-stats-grid { grid-template-columns: repeat(2, 1fr); }
  .trial-inner { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .nav-links {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 12px 24px 18px;
    display: none;
  }

  .nav-links.open { display: flex; }

  .nav-links a {
    width: 100%;
    padding: 10px 0;
  }

  .nav-toggle { display: flex; }

  .navbar-actions .btn-sm { display: none; }

  .hero { padding: 40px 20px 56px; }
  .hero-copy h1 { font-size: 2rem; }

  .section { padding: 56px 20px; }
  .section h2 { font-size: 1.6rem; }

  .about-grid, .why-grid, .program-grid, .testimoni-grid, .pricing-grid, .alumni-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-inner { grid-template-columns: 1fr; gap: 28px; }
}