/* ============================================
   EQUATION STATION SA — Main Stylesheet
   Brand: Navy oklch(22% 0.02 255) | Gold oklch(48% 0.14 254) | White #fff
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Serif:wght@500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ── Reset & Variables ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --navy: oklch(22% 0.02 255);
  --navy-light: oklch(30% 0.025 255);
  --navy-dark: oklch(18% 0.02 255);
  --gold: oklch(48% 0.14 254);
  --gold-light: oklch(38% 0.13 254);
  --gold-pale: oklch(94% 0.03 254);
  --white: oklch(98% 0.008 85);
  --off-white: oklch(96% 0.01 85);
  --text-muted: oklch(46% 0.03 255);
  --border: oklch(22% 0.02 255 / 0.12);
  --font-display: 'IBM Plex Serif', Georgia, serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;
  --radius: 4px;
  --radius-lg: 10px;
  --shadow-sm: 0 2px 8px oklch(22% 0.02 255 / 0.08);
  --shadow-md: 0 6px 24px oklch(22% 0.02 255 / 0.12);
  --shadow-lg: 0 16px 48px oklch(22% 0.02 255 / 0.16);
  --transition: 0.25s ease;
}

html { scroll-behavior: auto; font-size: 16px; }

body {
  font-family: var(--font-body);
  color: var(--navy);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Typography ── */
h1, h2, h3, h4 { font-family: var(--font-display); line-height: 1.2; }
h1 { font-size: clamp(2.2rem, 5vw, 3.6rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 600; }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.5rem); font-weight: 600; }
p { font-size: 1rem; line-height: 1.75; }

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

.container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; }
.section { padding: 5rem 0; }
.section-alt { background: var(--off-white); }

/* ── Gold Accent Line ── */
.accent-line {
  display: block;
  width: 48px;
  height: 2px;
  background: var(--gold);
  margin: 1rem 0 1.5rem;
}
.accent-line.center { margin: 1rem auto 1.5rem; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.8rem 1.8rem;
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--transition);
}
.btn-primary {
  background: var(--gold);
  color: var(--navy-dark);
  border-color: var(--gold);
  font-weight: 700;
}
.btn-primary:hover {
  background: #c9a24e;
  border-color: #c9a24e;
  color: var(--navy-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px oklch(48% 0.14 254 / 0.35);
}
.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.5);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: var(--white);
}
.btn-navy {
  background: var(--navy);
  color: var(--white);
  border-color: var(--navy);
}
.btn-navy:hover {
  background: var(--navy-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* ── NAV ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: oklch(22% 0.02 255 / 0.97);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid oklch(48% 0.14 254 / 0.2);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.nav-logo svg { width: 36px; height: 36px; }
.nav-logo-text { display: flex; flex-direction: column; line-height: 1.1; }
.nav-logo-name {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: 0.03em;
}
.nav-logo-sub {
  font-size: 0.65rem;
  color: var(--gold);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 500;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--gold); }
.nav-cta {
  padding: 0.5rem 1.2rem;
  background: var(--gold);
  color: var(--white) !important;
  border-radius: var(--radius);
  font-weight: 600 !important;
  transition: all var(--transition) !important;
}
.nav-cta:hover { background: var(--gold-light) !important; color: var(--white) !important; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  background: var(--navy-dark);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 64px;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 70% 50%, oklch(48% 0.14 254 / 0.06) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, oklch(48% 0.14 254 / 0.04) 0%, transparent 60%);
}
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(oklch(48% 0.14 254 / 0.05) 1px, transparent 1px),
    linear-gradient(90deg, oklch(48% 0.14 254 / 0.05) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 1100px;
  margin: 0 auto;
  padding: 5rem 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: oklch(48% 0.14 254 / 0.12);
  border: 1px solid oklch(48% 0.14 254 / 0.25);
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 0.9rem;
  border-radius: 2px;
  margin-bottom: 1.5rem;
}
.hero h1 { color: var(--white); margin-bottom: 1.25rem; }
.hero h1 em { font-style: normal; color: var(--gold); }
.hero p { color: rgba(255,255,255,0.65); font-size: 1.05rem; margin-bottom: 2rem; max-width: 480px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Hero math illustration */
.hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid oklch(48% 0.14 254 / 0.2);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: 100%;
  max-width: 380px;
}
.hero-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid oklch(48% 0.14 254 / 0.15);
}
.hero-card-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--gold);
}
.hero-card-title { font-size: 0.8rem; color: var(--gold); letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500; }
.formula-block {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: rgba(255,255,255,0.8);
  line-height: 2.2;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.formula-block .label { color: var(--gold); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; margin-top: 0.75rem; }
.formula-block .eq { color: var(--white); }
.formula-block .eq span { color: var(--gold); }

/* ── STATS STRIP ── */
.stats-strip {
  background: var(--navy);
  border-bottom: 1px solid oklch(48% 0.14 254 / 0.15);
}
.stats-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  text-align: center;
}
.stat-item { color: var(--white); }
.stat-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  display: block;
  line-height: 1;
  margin-bottom: 0.4rem;
}
.stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.55);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── TOPICS SECTION ── */
.topics-intro {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3.5rem;
}
.topics-intro .section-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
  display: block;
}
.topics-intro h2 { margin-bottom: 0.75rem; }
.topics-intro p { color: var(--text-muted); }

.grade-tabs {
  display: flex;
  justify-content: center;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin: -1.75rem auto 2.5rem;
}
.grade-tab {
  padding: 0.6rem 1.6rem;
  border-radius: 999px;
  border: 1.5px solid var(--border);
  background: var(--white);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition);
}
.grade-tab:hover { border-color: var(--gold); color: var(--navy); }
.grade-tab.active { background: var(--navy); border-color: var(--navy); color: var(--white); }

.topics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.topics-grid-panel[hidden] { display: none; }
.topics-grid-single {
  max-width: 560px;
  margin: 0 auto;
}
.topics-grid-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 1.75rem;
}
.topic-item-soon { cursor: default; opacity: 0.55; }
.topic-item-soon:hover { background: transparent; padding-left: 1.75rem; }
.topic-item-soon:hover .topic-icon { background: var(--gold-pale); border-color: oklch(48% 0.14 254 / 0.2); }
.topic-item-soon:hover .topic-icon svg { color: var(--gold); }
.topic-item-soon-tag { font-size: 0.68rem; font-weight: 700; letter-spacing: 0.02em; text-transform: uppercase; color: var(--text-muted); background: var(--off-white); border: 1px solid var(--border); border-radius: 999px; padding: 0.15rem 0.55rem; flex-shrink: 0; }
@media (max-width: 720px) {
  .grade-tabs { margin-top: 0.5rem; }
}

.paper-block {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.paper-header {
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border-bottom: 1px solid var(--border);
}
.paper-header.p1 { background: var(--navy); }
.paper-header.p2 { background: var(--navy-light); }
.paper-num {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--white);
  flex-shrink: 0;
}
.paper-header-text { color: var(--white); }
.paper-header-text h3 { font-size: 1rem; font-weight: 600; margin-bottom: 0.1rem; }
.paper-header-text p { font-size: 0.75rem; color: rgba(255,255,255,0.55); line-height: 1; }

.topic-list { padding: 0.75rem 0; }
.topic-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1.75rem;
  text-decoration: none;
  color: var(--navy);
  border-bottom: 1px solid oklch(22% 0.02 255 / 0.06);
  transition: all var(--transition);
  cursor: pointer;
}
.topic-item:last-child { border-bottom: none; }
.topic-item:hover {
  background: var(--gold-pale);
  padding-left: 2rem;
}
.topic-item:hover .topic-arrow { transform: translateX(4px); color: var(--gold); }
.topic-icon {
  width: 32px; height: 32px;
  border-radius: 6px;
  background: var(--gold-pale);
  border: 1px solid oklch(48% 0.14 254 / 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
  transition: all var(--transition);
}
.topic-item:hover .topic-icon {
  background: var(--gold);
  border-color: var(--gold);
}
.topic-item:hover .topic-icon svg { color: var(--white); }
.topic-icon svg { width: 15px; height: 15px; color: var(--gold); transition: color var(--transition); }
.topic-name {
  flex: 1;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.topic-arrow {
  width: 16px; height: 16px;
  color: var(--text-muted);
  flex-shrink: 0;
  transition: all var(--transition);
}

/* ── HOW IT WORKS ── */
.how-it-works-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  padding: 3rem 0;
}

.how-it-works-content {
  display: flex;
  flex-direction: column;
}

.how-it-works-intro {
  color: var(--text-muted);
  margin-bottom: 2.5rem;
}

.steps-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.step-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 1.5rem;
  padding: 1.75rem;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.step-item:hover {
  box-shadow: var(--shadow-md);
  border-color: oklch(48% 0.14 254 / 0.3);
  transform: translateY(-2px);
}

.step-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--gold);
  color: var(--white);
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--navy);
}

.step-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
  line-height: 1.65;
}

/* ── INLINE STYLE REPLACEMENTS ── */
.how-it-works-bg {
  background: var(--navy-dark);
  padding: 3rem 0;
  overflow: hidden;
}

.how-it-works-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
}

.step-image {
  height: 240px;
  border: 1px solid oklch(48% 0.14 254 / 0.18);
  border-radius: 4px;
  object-fit: cover;
}

.about-photo-img {
  object-position: center top;
}

.resources-note {
  text-align: center;
  margin-top: 2rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.resources-note a {
  color: var(--gold);
  font-weight: 600;
}

.section-tag {
  color: var(--gold);
  background: oklch(48% 0.14 254 / 0.12);
  border: 1px solid oklch(48% 0.14 254 / 0.25);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.4rem 0.9rem;
  border-radius: 2px;
  margin-bottom: 1.5rem;
}

/* ── INLINE STYLE REPLACEMENTS ── */
.btn-whatsapp-inline {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.5rem;
}

.youtube-link {
  color: var(--gold);
  font-weight: 600;
}

.sidebar-block-body-padded {
  padding: 0.75rem;
}

.footer-bottom-no-border {
  border-top: none;
  padding-top: 0;
}

.how-it-works-cta {
  display: flex;
  justify-content: flex-start;
}

.how-it-works-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

.how-it-works-image img {
  width: 100%;
  height: auto;
  max-height: 480px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.step-card {
  text-align: center;
  padding: 2.5rem 1.5rem;
  border-radius: var(--radius-lg);
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  position: relative;
}
.step-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: oklch(48% 0.14 254 / 0.3);
}
.step-number {
  font-family: var(--font-display);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--gold);
  opacity: 0.15;
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  line-height: 1;
}
.step-icon {
  width: 56px; height: 56px;
  background: var(--gold-pale);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem;
  border: 1px solid oklch(48% 0.14 254 / 0.2);
}
.step-icon svg { width: 24px; height: 24px; color: var(--gold); }
.step-card h3 { font-size: 1.1rem; margin-bottom: 0.75rem; }
.step-card p { font-size: 0.9rem; color: var(--text-muted); line-height: 1.65; }

/* ── ABOUT ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}
.about-image-wrap {
  position: relative;
}
.about-image-placeholder {
  width: 100%;
  aspect-ratio: 4/5;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.about-image-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-lg);
}
.about-image-placeholder .placeholder-text {
  color: rgba(255,255,255,0.3);
  font-size: 0.8rem;
  text-align: center;
}
.about-badge {
  position: absolute;
  bottom: -1rem;
  right: -1rem;
  background: var(--gold);
  color: var(--white);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-md);
}
.about-badge .years {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  display: block;
  line-height: 1;
}
.about-badge .badge-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: block;
  margin-top: 0.25rem;
}
.about-section-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 0.5rem;
}
.about-content h2 { margin-bottom: 1rem; }
.about-content p { color: var(--text-muted); margin-bottom: 1rem; }
.about-quals {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 1.5rem 0;
}
.about-qual {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9rem;
}
.about-qual svg { width: 16px; height: 16px; color: var(--gold); flex-shrink: 0; }

/* ── BOOKING / CTA ── */
.booking-section {
  background: var(--navy);
  position: relative;
  overflow: hidden;
}
.booking-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 50% 60% at 80% 50%, oklch(48% 0.14 254 / 0.08) 0%, transparent 70%);
}
.booking-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 620px;
  margin: 0 auto;
}
.booking-inner .section-tag {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  display: block;
  margin-bottom: 0.75rem;
}
.booking-inner h2 { color: var(--white); margin-bottom: 1rem; }
.booking-inner p { color: rgba(255,255,255,0.6); margin-bottom: 2rem; }
.booking-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn-whatsapp {
  background: var(--gold);
  color: var(--navy-dark);
  border-color: var(--gold);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.btn-whatsapp:hover {
  background: #c9a24e;
  border-color: #c9a24e;
  color: var(--navy-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px oklch(48% 0.14 254 / 0.35);
}

/* ── FOOTER ── */
footer {
  background: var(--navy-dark);
  padding: 3.5rem 0 1.5rem;
  border-top: 1px solid oklch(48% 0.14 254 / 0.15);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}
.footer-brand-name {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 0.75rem;
}
.footer-brand-text { font-size: 0.88rem; color: rgba(255,255,255,0.45); line-height: 1.7; margin-bottom: 1.25rem; }
.social-links { display: flex; gap: 0.75rem; }
.social-link {
  width: 36px; height: 36px;
  border-radius: 6px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.55);
  transition: all var(--transition);
}
.social-link:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--white);
  transform: translateY(-2px);
}
.social-link svg { width: 16px; height: 16px; }
.footer-col-title {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}
.footer-links { list-style: none; display: flex; flex-direction: column; gap: 0.5rem; }
.footer-links a {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.45);
  transition: color var(--transition);
}
.footer-links a:hover { color: rgba(255,255,255,0.85); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.3); }
.footer-bottom a { color: var(--gold); }

/* ── TOPIC DETAIL PAGE ── */
.topic-hero {
  background: var(--navy);
  padding: 7rem 0 3rem;
  position: relative;
  overflow: hidden;
}
.topic-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 60% 80% at 100% 50%, oklch(48% 0.14 254 / 0.07) 0%, transparent 60%);
}
.topic-hero-inner { position: relative; z-index: 2; }
.topic-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  margin-bottom: 1.5rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.topic-breadcrumb a { color: var(--gold); transition: opacity var(--transition); }
.topic-breadcrumb a:hover { opacity: 0.7; }
.topic-breadcrumb svg { width: 12px; height: 12px; }
.topic-hero h1 { color: var(--white); margin-bottom: 0.75rem; }
.topic-hero p { color: rgba(255,255,255,0.6); max-width: 540px; }
.topic-meta {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}
.topic-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: oklch(48% 0.14 254 / 0.12);
  border: 1px solid oklch(48% 0.14 254 / 0.25);
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.35rem 0.75rem;
  border-radius: 2px;
}

/* Topic content layout */
.topic-content-wrap {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 3rem;
  align-items: start;
}
.topic-sidebar {
  position: sticky;
  top: 84px;
}
.sidebar-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.25rem;
}
.sidebar-card-header {
  background: var(--navy);
  padding: 1rem 1.25rem;
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sidebar-card-body { padding: 1.25rem; }
.sidebar-book-btn {
  display: block;
  width: 100%;
  text-align: center;
  padding: 0.85rem;
  background: var(--gold);
  color: var(--navy-dark);
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  transition: all var(--transition);
}
.sidebar-book-btn:hover {
  background: #c9a24e;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px oklch(48% 0.14 254 / 0.3);
}
.sidebar-info { font-size: 0.82rem; color: var(--text-muted); text-align: center; }
.sidebar-nav-list { list-style: none; display: flex; flex-direction: column; gap: 0.25rem; }
.sidebar-nav-list a {
  display: block;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  color: var(--navy);
  border-radius: var(--radius);
  transition: all var(--transition);
  border-left: 2px solid transparent;
}
.sidebar-nav-list a:hover {
  background: var(--gold-pale);
  border-left-color: var(--gold);
  padding-left: 1rem;
}

/* Topic content sections */
.content-section {
  margin-bottom: 3rem;
  scroll-margin-top: 84px;
}
.content-section-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.content-section-title svg { width: 20px; height: 20px; color: var(--gold); }
.content-section-title h2 {
  font-size: 1.3rem;
  font-weight: 600;
}
.concept-list { display: flex; flex-direction: column; gap: 0.75rem; }
.concept-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: var(--off-white);
  border-radius: var(--radius);
  border-left: 3px solid var(--gold);
  font-size: 0.92rem;
  line-height: 1.6;
}
.concept-item svg { width: 16px; height: 16px; color: var(--gold); flex-shrink: 0; margin-top: 3px; }

/* Formulas */
.formula-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.formula-card {
  background: var(--navy);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  border: 1px solid oklch(48% 0.14 254 / 0.15);
}
.formula-card-label {
  font-size: 0.72rem;
  color: var(--gold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 0.75rem;
}
.formula-display {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: 0.5rem;
  line-height: 1.6;
}
.formula-display .var { color: var(--gold); }
.formula-note { font-size: 0.78rem; color: rgba(255,255,255,0.45); line-height: 1.5; }

/* Mistakes */
.mistake-list { display: flex; flex-direction: column; gap: 0.75rem; }
.mistake-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background: #fff8f8;
  border-radius: var(--radius);
  border-left: 3px solid #e74c3c;
  font-size: 0.92rem;
  line-height: 1.6;
}
.mistake-item svg { width: 16px; height: 16px; color: #e74c3c; flex-shrink: 0; margin-top: 3px; }

/* Video placeholders */
.video-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }
.video-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.video-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}
.video-thumb {
  aspect-ratio: 16/9;
  background: var(--navy);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}
.video-thumb iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}
.video-thumb .play-overlay {
  position: absolute;
  inset: 0;
  background: oklch(22% 0.02 255 / 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}
.video-thumb:hover .play-overlay { background: oklch(22% 0.02 255 / 0.3); }
.play-btn {
  width: 56px; height: 56px;
  background: var(--gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px oklch(48% 0.14 254 / 0.4);
}
.play-btn svg { width: 22px; height: 22px; color: var(--white); margin-left: 3px; }
.video-info { padding: 1rem; background: var(--white); }
.video-info h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 0.25rem; }
.video-info p { font-size: 0.78rem; color: var(--text-muted); }

/* After lesson / skills */
.outcome-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; }
.outcome-card {
  padding: 1.25rem;
  background: var(--gold-pale);
  border-radius: var(--radius);
  border: 1px solid oklch(48% 0.14 254 / 0.2);
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.9rem;
  line-height: 1.6;
}
.outcome-card svg { width: 18px; height: 18px; color: var(--gold); flex-shrink: 0; margin-top: 2px; }

/* ── MOBILE ── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .nav-inner { gap: 1rem; }
  .hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-visual { display: none; }
  .topics-grid { grid-template-columns: 1fr; }
  .steps-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .about-image-wrap { display: block; max-width: 360px; margin: 0 auto 2rem; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .topic-content-wrap { grid-template-columns: 1fr; }
  .topic-sidebar { position: static; }
}

@media (max-width: 640px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .steps-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .stats-inner { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; }
  .booking-actions { flex-direction: column; align-items: center; }
  .formula-cards { grid-template-columns: 1fr; }
  .section { padding: 3.5rem 0; }
}

/* Mobile nav open */
.nav-links.open {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--navy-dark);
  padding: 1.5rem 2rem;
  gap: 1rem;
  border-bottom: 1px solid oklch(48% 0.14 254 / 0.15);
  z-index: 99;
}

/* ── Utility ── */
.text-gold { color: var(--gold); }
.text-center { text-align: center; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }

/* ── INSTRUCTOR IMAGE ── */
.about-image-placeholder img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius-lg);
}
.about-image-placeholder {
  width: 100%;
  height: 420px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--navy);
  border: 2px solid oklch(48% 0.14 254 / 0.2);
  box-shadow: var(--shadow-lg);
}

/* ── AD CONTAINER ── */
.ad-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 2rem;
  min-height: 10px;
  text-align: center;
}

/* ── BLOG CARDS ── */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1rem;
}
.blog-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  text-decoration: none;
  color: inherit;
}
.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: oklch(48% 0.14 254 / 0.3);
}
.blog-card-tag {
  display: inline-block;
  background: var(--gold-pale);
  color: var(--gold);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.3rem 0.7rem;
  border-radius: 2px;
  margin-bottom: 0.9rem;
  border: 1px solid oklch(48% 0.14 254 / 0.2);
}
.blog-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.6rem;
  line-height: 1.4;
}
.blog-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 1rem;
}
.blog-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gold);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ── RESOURCE CARDS (topic pages) ── */
.resource-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}
.resource-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.resource-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: oklch(48% 0.14 254 / 0.3);
}
.resource-card-icon {
  width: 40px;
  height: 40px;
  background: var(--gold-pale);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.resource-card-icon svg { width: 20px; height: 20px; color: var(--gold); }
.resource-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin: 0;
}
.resource-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}
.resource-card .btn {
  margin-top: auto;
  font-size: 0.8rem;
  padding: 0.6rem 1.2rem;
  align-self: flex-start;
}

/* Trust pages */
.trust-page-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 7rem 2rem 5rem;
}
.trust-page-content h1 { margin-bottom: 0.5rem; }
.trust-page-content h2 { font-size: 1.2rem; margin-top: 2rem; margin-bottom: 0.5rem; }
.trust-page-content p { margin-bottom: 1rem; color: var(--text-muted); }
.trust-page-content a { color: var(--gold); }

@media (max-width: 640px) {
  .about-image-placeholder { height: 300px; }
  .blog-grid { grid-template-columns: 1fr; }
  .resource-cards { grid-template-columns: 1fr; }
}

/* ── IMPROVED RESOURCE CARDS ── */
.resource-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
  margin-top: 0.75rem;
}
.resource-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0;
}
.resource-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: oklch(48% 0.14 254 / 0.35);
}
.resource-card-top {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}
.resource-pdf-icon {
  flex-shrink: 0;
  width: 44px;
  height: 52px;
  background: #e74c3c;
  border-radius: 6px 6px 6px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
}
.resource-pdf-icon::before {
  content: '';
  position: absolute;
  top: 0; right: 0;
  width: 0; height: 0;
  border-style: solid;
  border-width: 0 8px 8px 0;
  border-color: transparent rgba(255,255,255,0.25) transparent transparent;
}
.resource-pdf-icon span {
  color: #fff;
  font-size: 0.6rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  margin-top: 4px;
}
.resource-meta {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}
.resource-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  margin: 0 0 0.6rem;
}
.resource-card p {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0 0 1.25rem;
  flex: 1;
}
.resource-file-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--gold-pale);
  border: 1px solid oklch(48% 0.14 254 / 0.25);
  color: var(--gold);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 3px;
  margin-bottom: 1.25rem;
}
.resource-actions {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-top: auto;
}
.btn-preview {
  display: none;
}
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.3rem;
  background: var(--gold);
  color: var(--navy-dark);
  border: 1.5px solid var(--gold);
  border-radius: var(--radius);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: all var(--transition);
  cursor: pointer;
}
.btn-download:hover {
  background: #c9a24e;
  border-color: #c9a24e;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px oklch(48% 0.14 254 / 0.3);
}
.btn-download svg, .btn-preview svg {
  width: 13px; height: 13px;
}

/* ── HERO IMAGE STRIP ── */
.hero-image-strip {
  display: flex;
  gap: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.hero-image-strip img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ── STUDY IMAGE SECTION ── */
.study-image-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
  padding: 4rem 0;
}
.study-image-block img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
  box-shadow: var(--shadow-md);
}
.study-image-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.study-image-duo img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
  box-shadow: var(--shadow-sm);
}

/* ── ABOUT SECTION IMAGE FIX ── */
.about-photo-frame {
  position: relative;
}
.about-photo-frame .about-photo-img {
  width: 100%;
  height: 460px;
  object-fit: cover;
  object-position: center top;
  border-radius: var(--radius-lg);
  display: block;
  box-shadow: var(--shadow-lg);
  border: 2px solid oklch(48% 0.14 254 / 0.2);
}
.about-photo-badge {
  position: absolute;
  bottom: -1rem;
  right: -1rem;
  background: var(--gold);
  color: var(--white);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
}
.about-photo-badge .badge-main {
  display: block;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
}
.about-photo-badge .badge-sub {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-top: 2px;
}

/* ── FEATURED RESOURCES ON HOMEPAGE ── */
.featured-resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 1rem;
}
.featured-resource-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}
.featured-resource-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: oklch(48% 0.14 254 / 0.35);
}
.featured-resource-card .topic-tag-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-pale);
  border: 1px solid oklch(48% 0.14 254 / 0.2);
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  display: inline-block;
  width: fit-content;
}
.frc-icon-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--navy);
  margin-top: 0.2rem;
}
.frc-pdf-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold);
  background: var(--gold-pale);
  border: 1px solid oklch(48% 0.14 254 / 0.25);
  padding: 0.15rem 0.45rem;
  border-radius: 2px;
}
.featured-resource-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--navy-dark);
  margin: 0;
}
.featured-resource-card p {
  font-size: 0.83rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}
.featured-resource-card .res-meta {
  font-size: 0.7rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 0.6rem;
  margin-top: 0.2rem;
}
.resource-weighting-stack {
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}
.resource-weighting-group {
  border: 1px solid var(--border);
  background: oklch(48% 0.14 254 / 0.05);
  border-radius: 12px;
  padding: 0.7rem 0.8rem;
}
.resource-weighting-group strong {
  display: block;
  color: var(--navy-dark);
  font-size: 0.78rem;
  margin-bottom: 0.18rem;
}
.resource-weighting-group span {
  display: block;
  color: var(--text-muted);
  font-size: 0.76rem;
  line-height: 1.5;
}
.frc-download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.4rem;
  padding: 0.65rem 1.1rem;
  background: var(--gold);
  color: var(--navy-dark) !important;
  border-radius: var(--radius);
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  text-decoration: none !important;
  transition: all var(--transition);
  align-self: flex-start;
}
.frc-download-btn:hover {
  background: #c9a24e !important;
  transform: translateY(-1px);
  box-shadow: 0 4px 14px oklch(48% 0.14 254 / 0.3);
  text-decoration: none !important;
}

/* ── YOUTUBE SECTION ── */
.youtube-strip {
  background: var(--navy);
  padding: 4.5rem 0;
}
.youtube-strip-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 3.5rem;
  align-items: center;
}
.youtube-text h2 { color: var(--white); }
.youtube-text p { color: rgba(255,255,255,0.6); font-size: 0.95rem; line-height: 1.8; margin-top: 0.75rem; }
.youtube-text .btn-gold {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.75rem;
  padding: 0.85rem 1.75rem;
  background: #e74c3c;
  color: var(--white);
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.88rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all var(--transition);
}
.youtube-text .btn-gold:hover { background: #c0392b; transform: translateY(-1px); box-shadow: 0 4px 20px rgba(231,76,60,0.4); }
.youtube-thumb {
    aspect-ratio: 16/9;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    border: 1px solid oklch(48% 0.14 254 / 0.2);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 1rem;
  }
.youtube-embed-frame {
    width: 100%;
    height: 100%;
    border: 0;
    display: block;
    background: #0f1722;
  }
.youtube-thumb-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: rgba(255,255,255,0.35);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.youtube-play-icon {
  width: 64px; height: 64px;
  background: #e74c3c;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(231,76,60,0.4);
}
.youtube-play-icon svg { width: 26px; height: 26px; color: #fff; margin-left: 4px; }

/* FAQ */
.faq-section {
  margin-top: 4rem;
}
.faq-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  margin-bottom: 0.9rem;
  color: var(--navy);
}
.faq-section p {
  color: var(--text-muted);
}
.faq-intro {
  max-width: 720px;
  margin-bottom: 2rem;
}
.faq-list {
  border-top: 1px solid var(--border);
}
.faq-item {
  padding: 1.1rem 0 1.2rem;
  border-bottom: 1px solid var(--border);
}
.faq-item h3 {
  font-size: 1.05rem;
  color: var(--navy);
  margin-bottom: 0.4rem;
}
.faq-item p {
  font-size: 0.96rem;
  line-height: 1.7;
  margin: 0;
}
.faq-section .section-tag {
  margin-bottom: 0.8rem;
}

@media (max-width: 900px) {
  .youtube-strip-inner { grid-template-columns: 1fr; }
  .study-image-section { grid-template-columns: 1fr; }
  .how-it-works-wrapper { grid-template-columns: 1fr; }
  .about-photo-frame .about-photo-img { height: 340px; }
}
@media (max-width: 640px) {
  .step-image { height: 180px; }
  .study-image-duo img { height: 160px; }
  .study-image-duo { grid-template-columns: 1fr; }
  .resource-actions { flex-direction: column; }
  .featured-resources-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .featured-resources-grid { grid-template-columns: 1fr; }
}

/* ── NAV ACTIVE STATE ── */
.nav-links a.active {
  color: var(--gold) !important;
}

/* Accessibility and upgraded conversion components */
.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  background: var(--gold);
  color: var(--navy-dark);
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius);
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform var(--transition);
}

.skip-link:focus {
  transform: translateY(0);
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid oklch(48% 0.14 254 / 0.75);
  outline-offset: 3px;
}

button.hamburger {
  background: transparent;
  border: 0;
}

.support-section {
  background:
    linear-gradient(180deg, oklch(94% 0.03 254 / 0.55), rgba(255,255,255,0)),
    var(--white);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.support-card {
  position: relative;
  overflow: hidden;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.support-card::after {
  content: '';
  position: absolute;
  inset: auto -30% -45% auto;
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: oklch(48% 0.14 254 / 0.12);
}

.support-card:hover {
  transform: translateY(-3px);
  border-color: oklch(48% 0.14 254 / 0.32);
  box-shadow: var(--shadow-md);
}

.support-card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  border-radius: 14px;
  background: var(--navy-dark);
  color: var(--gold);
  font-weight: 800;
  letter-spacing: 0.06em;
}

.support-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.65rem;
}

.support-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

.faq-home-section {
  background: var(--off-white);
}

.faq-home-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 3rem;
  align-items: start;
}

.faq-home-grid > div:first-child p {
  color: var(--text-muted);
}

.faq-home-list {
  display: grid;
  gap: 0.85rem;
}

.faq-home-list details {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1rem 1.15rem;
  box-shadow: var(--shadow-sm);
}

.faq-home-list summary {
  cursor: pointer;
  color: var(--navy-dark);
  font-weight: 700;
}

.faq-home-list summary::marker {
  color: var(--gold);
}

.faq-home-list p {
  color: var(--text-muted);
  margin-top: 0.75rem;
  font-size: 0.94rem;
}

.floating-whatsapp {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  background: #25d366;
  color: #062713;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  box-shadow: 0 12px 30px rgba(37,211,102,0.32);
  transition: transform var(--transition), box-shadow var(--transition);
}

.floating-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(37,211,102,0.42);
}

.trust-page-content .btn-whatsapp {
  color: var(--navy-dark);
}

.helper-hero {
  position: relative;
  margin-top: 64px;
  padding: 5rem 0 4rem;
  background:
    radial-gradient(circle at 18% 20%, oklch(48% 0.14 254 / 0.22), transparent 28%),
    radial-gradient(circle at 86% 16%, rgba(255,255,255,0.12), transparent 24%),
    linear-gradient(135deg, #0c1826 0%, #162a40 48%, #223a56 100%);
  color: var(--white);
  overflow: hidden;
}

.helper-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent);
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent);
}

.helper-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 380px;
  gap: 3rem;
  align-items: center;
}

.helper-hero h1 {
  color: var(--white);
  font-size: clamp(2.45rem, 6vw, 4.8rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  margin: 1rem 0 1.25rem;
}

.helper-hero p {
  max-width: 690px;
  color: rgba(255,255,255,0.78);
  font-size: 1.08rem;
  line-height: 1.8;
}

.helper-hero-card {
  border: 1px solid oklch(48% 0.14 254 / 0.38);
  border-radius: 28px;
  padding: 2rem;
  background: rgba(255,255,255,0.08);
  box-shadow: 0 24px 80px rgba(0,0,0,0.25);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.helper-mini-label {
  display: inline-flex;
  margin-bottom: 1rem;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: oklch(48% 0.14 254 / 0.18);
  color: #f8ddb0;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.helper-hero-card ol {
  margin: 0;
  padding-left: 1.2rem;
  color: rgba(255,255,255,0.86);
  line-height: 1.85;
}

.helper-main-section {
  background: var(--off-white);
}

.helper-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  gap: 1.5rem;
  align-items: start;
}

.helper-panel,
.helper-calc-card {
  border: 1px solid var(--border);
  border-radius: 26px;
  background: var(--white);
  box-shadow: var(--shadow-sm);
}

.helper-panel {
  padding: 2rem;
}

.helper-question-panel label,
.helper-calc-card label {
  display: block;
  margin: 1rem 0 0.4rem;
  color: var(--navy-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.helper-muted {
  color: var(--text-muted);
  line-height: 1.7;
}

.helper-select,
.helper-textarea,
.helper-calc-card input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: #fbfaf7;
  color: var(--navy-dark);
  font: inherit;
  padding: 0.9rem 1rem;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.helper-textarea {
  resize: vertical;
  min-height: 150px;
  line-height: 1.6;
}

.helper-select:focus,
.helper-textarea:focus,
.helper-calc-card input:focus {
  border-color: var(--gold);
  background: var(--white);
  box-shadow: 0 0 0 4px oklch(48% 0.14 254 / 0.14);
}

.helper-upload-box {
  margin-top: 1rem;
  padding: 1rem;
  border: 1px dashed oklch(48% 0.14 254 / 0.55);
  border-radius: 18px;
  background: oklch(48% 0.14 254 / 0.07);
}

.helper-upload-box input {
  width: 100%;
  color: var(--text-muted);
}

.helper-upload-box p {
  margin: 0.65rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.helper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.25rem;
}

.helper-output-panel {
  position: sticky;
  top: 84px;
}

.helper-output h3 {
  color: var(--navy-dark);
  margin: 0 0 0.75rem;
}

.helper-output ol {
  margin: 0;
  padding-left: 1.2rem;
  color: var(--text-muted);
  line-height: 1.85;
}

.helper-output li + li {
  margin-top: 0.4rem;
}

.helper-warning {
  margin-top: 1.25rem;
  padding: 1rem;
  border-radius: 18px;
  background: oklch(22% 0.02 255 / 0.06);
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.helper-calculators-section {
  background: linear-gradient(180deg, var(--white) 0%, #f8f4ed 100%);
}

.helper-calculator-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.helper-calc-card {
  padding: 1.5rem;
}

.helper-calc-card h3 {
  color: var(--navy-dark);
  margin: 0 0 0.5rem;
}

.helper-calc-card p {
  color: var(--text-muted);
  margin: 0 0 0.5rem;
  line-height: 1.65;
}

.helper-calc-card button {
  margin-top: 1rem;
  border: 0;
  border-radius: 999px;
  background: var(--navy);
  color: var(--white);
  font-weight: 800;
  padding: 0.8rem 1rem;
  cursor: pointer;
  transition: transform var(--transition), background var(--transition);
}

.helper-calc-card button:hover {
  transform: translateY(-1px);
  background: var(--navy-dark);
}

.helper-calc-wide {
  grid-column: 1 / -1;
}

.helper-input-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.helper-input-grid label {
  margin-top: 0.75rem;
}

.helper-calc-result {
  margin-top: 1rem;
  padding: 1rem;
  min-height: 58px;
  border-radius: 16px;
  background: #f7f3eb;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

.helper-method-section {
  background: var(--navy-dark);
}

.helper-method-section .topics-intro h2,
.helper-method-section .support-card h3 {
  color: var(--white);
}

.helper-method-section .topics-intro p,
.helper-method-section .support-card p {
  color: rgba(255,255,255,0.72);
}

.helper-method-section .support-card {
  background: rgba(255,255,255,0.07);
  border-color: oklch(48% 0.14 254 / 0.24);
  box-shadow: none;
}

.helper-promo-section {
  background: linear-gradient(135deg, #f8f4ed 0%, #ffffff 55%, #edf3f7 100%);
}

.helper-promo {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.9fr);
  gap: 2rem;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 30px;
  padding: clamp(1.5rem, 4vw, 3rem);
  background: rgba(255,255,255,0.78);
  box-shadow: var(--shadow-md);
}

.helper-promo h2 {
  color: var(--navy-dark);
  margin: 0.75rem 0 1rem;
}

.helper-promo p {
  color: var(--text-muted);
  line-height: 1.75;
}

.helper-promo-list {
  display: grid;
  gap: 0.8rem;
  margin: 1.25rem 0;
  padding: 0;
  list-style: none;
}

.helper-promo-list li {
  display: flex;
  gap: 0.65rem;
  color: var(--navy-dark);
  font-weight: 700;
}

.helper-promo-list li::before {
  content: "\2713";
  color: var(--gold);
}

.helper-promo-card {
  border-radius: 24px;
  padding: 1.5rem;
  background: var(--navy-dark);
  color: var(--white);
}

.helper-promo-card span {
  color: #f6d59f;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.helper-promo-card code {
  display: block;
  margin-top: 1rem;
  padding: 1rem;
  border-radius: 16px;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.9);
  white-space: normal;
  line-height: 1.7;
}

/* ── GLOBAL FORMULA OVERFLOW FIX ── */
.MathJax_Display, mjx-container[display="true"] {
  overflow-x: auto !important;
  max-width: 100% !important;
}

/* ── SECTION SPACING CONSISTENCY ── */
.section {
  padding: 5rem 0;
}
.section-alt {
  padding: 5rem 0;
}

/* Mobile polish overrides */
@media (max-width: 640px) {
  .container {
    padding: 0 1rem;
  }

  .nav-inner {
    padding: 0 1rem;
  }

  .nav-links.open {
    padding: 1rem;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }

  .nav-logo svg {
    width: 32px;
    height: 32px;
  }

  .nav-logo-name {
    font-size: 0.92rem;
  }

  .nav-logo-sub {
    font-size: 0.56rem;
  }

  .hero {
    min-height: 0;
  }

  .hero-inner {
    padding: 3.5rem 1rem;
    gap: 2rem;
  }

  .hero p {
    font-size: 0.98rem;
    line-height: 1.7;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-actions .btn,
  .booking-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .paper-header {
    padding: 1rem;
  }

  .topic-item {
    padding: 0.95rem 1rem;
  }

  .topic-name {
    font-size: 0.94rem;
  }

  .stat-item {
    padding: 1rem 0.75rem;
  }

  .how-it-works-wrapper {
    gap: 2rem;
    padding: 2rem 0;
  }

  .step-item {
    align-items: flex-start;
  }

  .about-qual {
    font-size: 0.92rem;
  }

  .youtube-strip-inner {
    padding: 0 1rem;
    gap: 2rem;
  }

  .featured-resources-grid,
  .blog-grid {
    grid-template-columns: 1fr;
  }

  .featured-resource-card,
  .blog-card {
    padding: 1.35rem;
  }

  .support-grid,
  .faq-home-grid,
  .helper-hero-grid,
  .helper-layout,
  .helper-promo {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .helper-hero {
    padding: 3.75rem 0 2.5rem;
  }

  .helper-panel,
  .helper-calc-card {
    padding: 1.25rem;
  }

  .helper-output-panel {
    position: static;
  }

  .helper-actions {
    flex-direction: column;
  }

  .helper-actions .btn {
    width: 100%;
    justify-content: center;
  }

  .helper-calculator-grid {
    grid-template-columns: 1fr;
  }

  .helper-calc-wide {
    grid-column: auto;
  }

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

  .support-card {
    padding: 1.35rem;
  }

  .booking-inner {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .footer-bottom {
    text-align: center;
  }

  .floating-whatsapp {
    left: 1rem;
    right: 1rem;
    bottom: 0.75rem;
  }
}

.no-break {
  white-space: nowrap;
}



/* ================================================================
   PREMIUM ENHANCEMENTS
   Deploy-ready visual upgrade. No HTML structure changes.
   ================================================================ */

/* ---- 1. Premium Variables ---- */
:root {
  --radius: 6px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --shadow-sm: 0 1px 2px oklch(22% 0.02 255 / 0.04), 0 4px 12px oklch(22% 0.02 255 / 0.06);
  --shadow-md: 0 4px 6px oklch(22% 0.02 255 / 0.03), 0 12px 28px oklch(22% 0.02 255 / 0.09);
  --shadow-lg: 0 10px 15px oklch(22% 0.02 255 / 0.04), 0 24px 48px oklch(22% 0.02 255 / 0.12);
  --shadow-gold: 0 8px 30px oklch(48% 0.14 254 / 0.22);
  --shadow-gold-lg: 0 12px 40px oklch(48% 0.14 254 / 0.28);
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ---- 2. Global Polish ---- */
::selection {
  background: oklch(48% 0.14 254 / 0.25);
  color: var(--navy-dark);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--off-white); }
::-webkit-scrollbar-thumb {
  background: oklch(48% 0.14 254 / 0.35);
  border-radius: 999px;
}
::-webkit-scrollbar-thumb:hover { background: oklch(48% 0.14 254 / 0.55); }

@keyframes pageFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
body { animation: pageFadeIn 0.6s ease-out; }

/* ---- 3. Navigation Premium ---- */
nav {
  background: oklch(22% 0.02 255 / 0.92);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid oklch(48% 0.14 254 / 0.15);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

.nav-links a {
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gold);
  transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-cta {
  background: linear-gradient(135deg, var(--gold) 0%, oklch(38% 0.13 254) 100%);
  box-shadow: 0 2px 8px oklch(48% 0.14 254 / 0.25);
  border: none;
}
.nav-cta:hover {
  background: linear-gradient(135deg, #c9a24e 0%, oklch(48% 0.14 254) 100%);
  box-shadow: 0 4px 14px oklch(48% 0.14 254 / 0.35);
  transform: translateY(-1px);
}

/* ---- 4. Hero Premium ---- */
.hero {
  background: linear-gradient(160deg, #0f1c28 0%, #162a3d 40%, oklch(22% 0.02 255) 100%);
}

.hero-bg {
  background:
    radial-gradient(ellipse 70% 60% at 80% 40%, oklch(48% 0.14 254 / 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 50% at 20% 80%, oklch(48% 0.14 254 / 0.05) 0%, transparent 50%);
}

.hero-badge {
  background: oklch(48% 0.14 254 / 0.1);
  border: 1px solid oklch(48% 0.14 254 / 0.3);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.hero-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid oklch(48% 0.14 254 / 0.22);
  -webkit-backdrop-filter: blur(16px) saturate(1.1);
  backdrop-filter: blur(16px) saturate(1.1);
  box-shadow: 0 24px 60px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.05);
  border-radius: var(--radius-xl);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}
.hero-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: 0 32px 72px rgba(0,0,0,0.25), inset 0 1px 0 rgba(255,255,255,0.08);
}

@keyframes heroFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
.hero-visual {
  animation: heroFloat 6s ease-in-out infinite;
}

.hero h1 {
  letter-spacing: -0.02em;
}

/* ---- 5. Stats Strip Premium ---- */
.stats-strip {
  background: linear-gradient(90deg, #172636 0%, oklch(22% 0.02 255) 50%, #172636 100%);
  position: relative;
}
.stats-strip::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, oklch(48% 0.14 254 / 0.3), transparent);
}

.stat-item {
  position: relative;
}
.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 15%;
  height: 70%;
  width: 1px;
  background: linear-gradient(180deg, transparent, oklch(48% 0.14 254 / 0.25), transparent);
}

.stat-num {
  background: linear-gradient(135deg, var(--gold) 0%, #d4b47a 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
/* ---- 6. Cards & Topics Premium ---- */
.paper-block {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}
.paper-block:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.paper-header {
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.topic-item {
  transition: all var(--transition);
}
.topic-item:hover {
  background: linear-gradient(90deg, var(--gold-pale) 0%, oklch(94% 0.03 254 / 0.4) 100%);
  padding-left: 2.25rem;
}

.topic-icon {
  transition: all var(--transition-bounce);
}
.topic-item:hover .topic-icon {
  transform: scale(1.08);
  background: var(--gold);
}

/* ---- 7. Support Cards Premium ---- */
.support-grid {
  gap: 1.5rem;
}

.support-card {
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--white) 0%, #fdfcfa 100%);
  border: 1px solid oklch(22% 0.02 255 / 0.08);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}
.support-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md), 0 20px 40px oklch(48% 0.14 254 / 0.08);
  border-color: oklch(48% 0.14 254 / 0.18);
}

.support-card-icon {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy) 100%);
  box-shadow: 0 4px 12px oklch(22% 0.02 255 / 0.15);
  transition: transform var(--transition-bounce);
}
.support-card:hover .support-card-icon {
  transform: scale(1.1) rotate(-3deg);
}

/* ---- 8. Step Items Premium ---- */
.step-item {
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--white) 0%, #fdfcfa 100%);
  border: 1px solid oklch(22% 0.02 255 / 0.08);
  transition: all var(--transition);
}
.step-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 16px 32px oklch(48% 0.14 254 / 0.06);
  border-color: oklch(48% 0.14 254 / 0.2);
}

.step-num {
  background: linear-gradient(135deg, var(--gold) 0%, oklch(38% 0.13 254) 100%);
  box-shadow: 0 4px 10px oklch(48% 0.14 254 / 0.3);
}

/* ---- 9. About Section Premium ---- */
.about-photo-frame .about-photo-img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  border: 2px solid oklch(48% 0.14 254 / 0.18);
  transition: all var(--transition-slow);
}
.about-photo-frame:hover .about-photo-img {
  box-shadow: var(--shadow-lg), 0 0 40px oklch(48% 0.14 254 / 0.12);
  border-color: oklch(48% 0.14 254 / 0.3);
}

.about-photo-badge {
  background: linear-gradient(135deg, var(--gold) 0%, oklch(38% 0.13 254) 100%);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-gold);
}

/* ---- 10. Buttons Premium ---- */
.btn-primary {
  background: linear-gradient(135deg, var(--gold) 0%, oklch(38% 0.13 254) 100%);
  border: none;
  box-shadow: 0 4px 14px oklch(48% 0.14 254 / 0.25);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition);
}
.btn-primary:hover::before {
  opacity: 1;
}
.btn-primary:hover {
  background: linear-gradient(135deg, #c9a24e 0%, oklch(48% 0.14 254) 100%);
  box-shadow: var(--shadow-gold);
  transform: translateY(-2px);
}
.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-navy {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%);
  border: none;
  box-shadow: 0 4px 14px oklch(22% 0.02 255 / 0.2);
}
.btn-navy:hover {
  background: linear-gradient(135deg, var(--navy-light) 0%, #2c3f52 100%);
  box-shadow: 0 6px 20px oklch(22% 0.02 255 / 0.25);
}

.btn-whatsapp {
  background: linear-gradient(135deg, var(--gold) 0%, oklch(38% 0.13 254) 100%);
  border: none;
  box-shadow: 0 4px 14px oklch(48% 0.14 254 / 0.25);
}
.btn-whatsapp:hover {
  box-shadow: var(--shadow-gold-lg);
}

/* ---- 11. Featured Resources Premium ---- */
.featured-resource-card {
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--white) 0%, #fdfcfa 100%);
  border: 1px solid oklch(22% 0.02 255 / 0.08);
  transition: all var(--transition);
}
.featured-resource-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md), 0 20px 40px oklch(48% 0.14 254 / 0.06);
  border-color: oklch(48% 0.14 254 / 0.18);
}

.frc-download-btn {
  background: linear-gradient(135deg, var(--gold) 0%, oklch(38% 0.13 254) 100%);
  border: none;
  box-shadow: 0 2px 8px oklch(48% 0.14 254 / 0.2);
}
.frc-download-btn:hover {
  box-shadow: 0 4px 14px oklch(48% 0.14 254 / 0.3);
}

/* ---- 12. Blog Cards Premium ---- */
.blog-card {
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--white) 0%, #fdfcfa 100%);
  border: 1px solid oklch(22% 0.02 255 / 0.08);
  transition: all var(--transition);
}
.blog-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md), 0 20px 40px oklch(48% 0.14 254 / 0.06);
  border-color: oklch(48% 0.14 254 / 0.18);
}
/* ---- 13. FAQ Premium ---- */
.faq-home-list details {
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--white) 0%, #fdfcfa 100%);
  border: 1px solid oklch(22% 0.02 255 / 0.08);
  transition: all var(--transition);
}
.faq-home-list details:hover {
  border-color: oklch(48% 0.14 254 / 0.18);
  box-shadow: var(--shadow-sm);
}
.faq-home-list summary {
  transition: color var(--transition);
}
.faq-home-list details[open] {
  box-shadow: var(--shadow-sm);
  border-color: oklch(48% 0.14 254 / 0.15);
}

/* ---- 14. Booking Section Premium ---- */
.booking-section {
  background: linear-gradient(160deg, #0f1c28 0%, #162a3d 50%, oklch(22% 0.02 255) 100%);
}
.booking-section::before {
  background:
    radial-gradient(ellipse 50% 60% at 80% 50%, oklch(48% 0.14 254 / 0.1) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 30%, oklch(48% 0.14 254 / 0.05) 0%, transparent 60%);
}

/* ---- 15. YouTube Section Premium ---- */
.youtube-strip {
  background: linear-gradient(160deg, #0f1c28 0%, #162a3d 50%, oklch(22% 0.02 255) 100%);
}
.youtube-thumb {
  border-radius: var(--radius-xl);
  box-shadow: 0 16px 40px rgba(0,0,0,0.2);
  border: 1px solid oklch(48% 0.14 254 / 0.15);
  overflow: hidden;
}

/* ---- 16. Footer Premium ---- */
footer {
  background: linear-gradient(180deg, #0f1c28 0%, oklch(18% 0.02 255) 100%);
  border-top: 1px solid oklch(48% 0.14 254 / 0.12);
}

.social-link {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  transition: all var(--transition);
}
.social-link:hover {
  background: var(--gold);
  border-color: var(--gold);
  transform: translateY(-3px) scale(1.08);
  box-shadow: 0 6px 16px oklch(48% 0.14 254 / 0.3);
}

.footer-links a {
  position: relative;
  transition: all var(--transition);
}
.footer-links a:hover {
  color: var(--gold);
  transform: translateX(2px);
}

/* ---- 17. Floating WhatsApp Premium ---- */
.floating-whatsapp {
  background: linear-gradient(135deg, #25d366 0%, #128c7e 100%);
  box-shadow: 0 8px 24px rgba(37,211,102,0.3);
  transition: all var(--transition);
}
.floating-whatsapp:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(37,211,102,0.4);
}

/* ---- 18. Resource Cards Premium ---- */
.resource-card {
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--white) 0%, #fdfcfa 100%);
  border: 1px solid oklch(22% 0.02 255 / 0.08);
}
.resource-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 16px 32px oklch(48% 0.14 254 / 0.06);
}

/* ---- 19. Formula Cards Premium ---- */
.formula-card {
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--navy) 0%, #1e3042 100%);
  border: 1px solid oklch(48% 0.14 254 / 0.15);
  box-shadow: var(--shadow-md);
  transition: all var(--transition);
}
.formula-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg), 0 0 30px oklch(48% 0.14 254 / 0.08);
  border-color: oklch(48% 0.14 254 / 0.25);
}

/* ---- 20. Scroll-Reveal Animation Base ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* Stagger children in grids */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1), transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.stagger-children.revealed > *:nth-child(1) { opacity: 1; transform: translateY(0); transition-delay: 0.05s; }
.stagger-children.revealed > *:nth-child(2) { opacity: 1; transform: translateY(0); transition-delay: 0.12s; }
.stagger-children.revealed > *:nth-child(3) { opacity: 1; transform: translateY(0); transition-delay: 0.19s; }
.stagger-children.revealed > *:nth-child(4) { opacity: 1; transform: translateY(0); transition-delay: 0.26s; }
.stagger-children.revealed > *:nth-child(5) { opacity: 1; transform: translateY(0); transition-delay: 0.33s; }
.stagger-children.revealed > *:nth-child(6) { opacity: 1; transform: translateY(0); transition-delay: 0.40s; }
.stagger-children.revealed > *:nth-child(7) { opacity: 1; transform: translateY(0); transition-delay: 0.47s; }
.stagger-children.revealed > *:nth-child(8) { opacity: 1; transform: translateY(0); transition-delay: 0.54s; }
/* ---- 21. Accent Lines Premium ---- */
.accent-line {
  height: 2.5px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold) 0%, #d4b47a 60%, transparent 100%);
}

/* ---- 22. Section Backgrounds Premium ---- */
.section-alt {
  background: linear-gradient(180deg, var(--off-white) 0%, #f5f2ee 100%);
}

/* ---- 23. Topic Page Premium Touches ---- */
.topic-hero {
  background: linear-gradient(160deg, #0f1c28 0%, #162a3d 50%, oklch(22% 0.02 255) 100%);
}
.sidebar-card {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid oklch(22% 0.02 255 / 0.08);
}
.sidebar-nav-list a {
  border-radius: 6px;
  transition: all var(--transition);
}
.content-section-title {
  border-bottom: 1px solid oklch(22% 0.02 255 / 0.08);
}
.concept-item {
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--off-white) 0%, #f8f5f1 100%);
}

/* ---- 24. Video Cards Premium ---- */
.video-card {
  border-radius: var(--radius-xl);
  background: linear-gradient(145deg, var(--white) 0%, #fdfcfa 100%);
  border: 1px solid oklch(22% 0.02 255 / 0.08);
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), 0 16px 32px oklch(48% 0.14 254 / 0.06);
}

/* ---- 25. Trust Pages Premium ---- */
.trust-page-content {
  background: linear-gradient(180deg, var(--white) 0%, #fdfcfa 100%);
}

/* ---- 26. Mobile Nav Premium ---- */
.nav-links.open {
  background: oklch(18% 0.02 255 / 0.97);
  -webkit-backdrop-filter: blur(24px);
  backdrop-filter: blur(24px);
}

/* ---- 27. Hamburger Animation ---- */
.hamburger span {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.hamburger:hover span:nth-child(1) { transform: translateY(-1px); }
.hamburger:hover span:nth-child(3) { transform: translateY(1px); }

/* ---- 28. Images Premium ---- */
.step-image,
.study-image-duo img,
.study-image-block img {
  border-radius: var(--radius-xl);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}
.step-image:hover,
.study-image-duo img:hover,
.study-image-block img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-md);
}

/* ---- 29. Outcome Cards Premium ---- */
.outcome-card {
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--gold-pale) 0%, #f8f2e8 100%);
  border: 1px solid oklch(48% 0.14 254 / 0.12);
  transition: all var(--transition);
}
.outcome-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ---- 30. Grain Texture on Dark Sections ---- */
.hero::after,
.stats-strip::after,
.booking-section::after,
.youtube-strip::after,
footer::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 180px 180px;
  pointer-events: none;
  z-index: 1;
}

.hero > *,
.stats-strip > *,
.booking-section > *,
.youtube-strip > *,
footer > * {
  position: relative;
  z-index: 2;
}

/* ---- 31. Topic Item Premium ---- */
.topic-item:hover .topic-arrow {
  transform: translateX(6px);
  color: var(--gold);
}

/* ---- 32. Paper Header Premium ---- */
.paper-num {
  background: linear-gradient(135deg, var(--gold) 0%, oklch(38% 0.13 254) 100%);
  box-shadow: 0 3px 10px oklch(48% 0.14 254 / 0.3);
}

/* ---- 33. Ad Container ---- */
.ad-container {
  background: linear-gradient(180deg, var(--white) 0%, var(--off-white) 100%);
}

/* ---- 34. Responsive Premium Tweaks ---- */
@media (max-width: 640px) {
  .hero-card {
    border-radius: var(--radius-lg);
  }
  .support-card,
  .blog-card,
  .featured-resource-card,
  .resource-card,
  .video-card,
  .formula-card,
  .paper-block,
  .step-item {
    border-radius: var(--radius-lg);
  }
}
/* ---- YouTube Click-to-Play Embed ---- */
.yt-embed-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background-image: url('https://img.youtube.com/vi/-hF4xOZMrG0/hqdefault.jpg');
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  box-shadow: 0 16px 40px rgba(0,0,0,0.2);
  border: 1px solid oklch(48% 0.14 254 / 0.15);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.yt-embed-wrapper:hover {
  transform: translateY(-3px) scale(1.01);
  box-shadow: 0 24px 56px rgba(0,0,0,0.25), 0 0 30px oklch(48% 0.14 254 / 0.08);
}
.yt-embed-wrapper iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
.yt-play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15,28,40,0.35);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  transition: background 0.35s ease;
}
.yt-embed-wrapper:hover .yt-play-overlay {
  background: rgba(15,28,40,0.2);
}
.yt-play-btn {
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, var(--gold) 0%, oklch(38% 0.13 254) 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px oklch(48% 0.14 254 / 0.4);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.35s ease;
  color: var(--navy-dark);
}
.yt-embed-wrapper:hover .yt-play-btn {
  transform: scale(1.1);
  box-shadow: 0 8px 32px oklch(48% 0.14 254 / 0.5);
}
.yt-play-label {
  color: var(--white);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-shadow: 0 1px 4px rgba(0,0,0,0.4);
}

/* ── Back to top button ── */
#back-to-top {
  position: fixed;
  bottom: 28px;
  right: 24px;
  z-index: 500;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold);
  border: 1.5px solid oklch(48% 0.14 254 / 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px oklch(22% 0.02 255 / 0.25);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.25s ease, transform 0.25s ease, background 0.18s;
  pointer-events: none;
  font-size: 18px;
  line-height: 1;
}
#back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
#back-to-top:hover {
  background: var(--gold);
  color: var(--white);
}
@media (max-width: 480px) {
  #back-to-top { bottom: 18px; right: 16px; width: 40px; height: 40px; }
}

/* ═══════════════════════════════════════════════════════════════════════
   SITE-UTILS: shared injected components (site-utils.js)
   ═══════════════════════════════════════════════════════════════════════ */

/* ── 1. Dark mode toggle button ──────────────────────────────────────── */
.es-dark-btn {
  background: transparent;
  border: 1.5px solid oklch(48% 0.14 254 / 0.35);
  border-radius: 8px;
  color: var(--gold);
  cursor: pointer;
  font-size: 16px;
  line-height: 1;
  padding: 6px 10px;
  transition: background 0.18s, border-color 0.18s;
  flex-shrink: 0;
}
.es-dark-btn:hover { background: oklch(48% 0.14 254 / 0.12); border-color: var(--gold); }

/* ── 2. Dark mode global overrides ───────────────────────────────────── */
html.es-dark { color-scheme: dark; }
html.es-dark body {
  background: #0f1c28;
  color: #dce5ef;
}
html.es-dark .card,
html.es-dark .sb-card,
html.es-dark details,
html.es-dark .details-note,
html.es-dark .eq-block,
html.es-dark .note-block {
  background: oklch(22% 0.02 255);
  border-color: rgba(255,255,255,0.08);
}
html.es-dark .sec-head { background: #162335; }
html.es-dark .sec { background: #0f1c28; }
html.es-dark .card-lbl,
html.es-dark .sec-title,
html.es-dark .sb-title,
html.es-dark .faq-section h2,
html.es-dark .faq-item h3 { color: #dce5ef; }
html.es-dark a { color: oklch(38% 0.13 254); }
html.es-dark a:hover { color: #e0bc83; }
html.es-dark .section-tag { color: #68a1e7; }
html.es-dark details summary { color: oklch(38% 0.13 254); }
html.es-dark .quiz-option span { color: #dce5ef; }
html.es-dark input[type="radio"] { accent-color: oklch(48% 0.14 254); }

/* ── 3. Exam countdown widget ────────────────────────────────────────── */
.es-cd-widget {
  background: var(--navy);
  color: #fff;
  border-radius: 14px;
  padding: 16px 18px 14px;
  margin-bottom: 14px;
  text-align: center;
}
.es-cd-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2px;
}
.es-cd-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gold);
}
.es-cd-days {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1;
  color: #fff;
}
.es-cd-sub {
  font-size: 11px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 10px;
}
.es-cd-track {
  height: 5px;
  background: rgba(255,255,255,0.12);
  border-radius: 999px;
  overflow: hidden;
}
.es-cd-fill {
  height: 100%;
  background: var(--gold);
  border-radius: 999px;
  transition: width 0.6s ease;
}
/* Urgency tints */
.es-cd-widget.es-cd-soon  { background: #1e3a2a; }
.es-cd-widget.es-cd-urgent { background: #3a1e1e; }
.es-cd-widget.es-cd-urgent .es-cd-days { color: #f87171; }
.es-cd-widget.es-cd-urgent .es-cd-fill { background: #f87171; }

/* ── 4. Reading time badge ───────────────────────────────────────────── */
.es-reading-time {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--off-white);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 2px 10px;
  margin-top: 6px;
  letter-spacing: .04em;
}
html.es-dark .es-reading-time { background: oklch(22% 0.02 255); border-color: rgba(255,255,255,0.1); color: #94a3b8; }

/* ── 5. Share button ─────────────────────────────────────────────────── */
.es-share-btn {
  display: block;
  width: fit-content;
  margin: 0 auto 24px;
  appearance: none;
  border: 1.5px solid var(--border);
  background: var(--white);
  color: var(--navy);
  border-radius: 999px;
  padding: 9px 22px;
  font: 600 13px var(--font-body);
  cursor: pointer;
  transition: border-color 0.18s, background 0.18s;
}
.es-share-btn:hover { border-color: var(--gold); background: var(--gold-pale); }
html.es-dark .es-share-btn { background: oklch(22% 0.02 255); color: #dce5ef; border-color: rgba(255,255,255,0.12); }

/* ── 6. Topic completion badge (on topic cards) ──────────────────────── */
.es-topic-done {
  position: absolute;
  top: 10px;
  right: 10px;
  background: #16a34a;
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  border-radius: 6px;
  padding: 2px 7px;
  letter-spacing: .04em;
  pointer-events: none;
}

/* ── Print: hide injected UI elements ───────────────────────────────── */
@media print {
  .es-dark-btn,
  .es-cd-widget,
  .es-share-btn,
  .es-reading-time,
  #back-to-top { display: none !important; }
}