/* ==========================================================================
   ISOP — Design System & Site Styles
   Plain CSS, no framework. Mobile-first.
   ========================================================================== */

/* ---- Design Tokens ---- */
:root {
  /* Brand colors — sampled directly from the ISOP logo. */
  --navy-900: #010864;
  --navy-800: #06218a;
  --navy-700: #0935a8;
  --blue-600: #136bfb;
  --blue-500: #4289fc;
  --blue-100: #eaf1ff;
  --orange-500: #fc361d;
  --orange-600: #d62e19;
  --green-whatsapp: #25d366;
  --green-whatsapp-dark: #1ebe57;
  --green-success: #1ea672;
  --ink-900: #101828;
  --ink-700: #344054;
  --ink-500: #667085;
  --ink-300: #98a2b3;
  --border-200: #e4e7ec;
  --border-100: #eef1f5;
  --bg-page: #ffffff;
  --bg-soft: #f7f9fc;
  --bg-cream: #faf9f6;
  --white: #ffffff;

  --font-head: "Sora", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
  --shadow-md: 0 4px 16px rgba(16, 24, 40, 0.08);
  --shadow-lg: 0 16px 40px rgba(11, 31, 58, 0.14);

  --container-w: 1180px;
  --header-h: 76px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, figure, blockquote, dl, dd { margin: 0; }
ul[class], ol[class] { list-style: none; margin: 0; padding: 0; }
img, picture, svg { display: block; max-width: 100%; }
input, button, textarea, select { font: inherit; color: inherit; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; }

body {
  font-family: var(--font-body);
  color: var(--ink-900);
  background: var(--bg-page);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--navy-900);
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(2rem, 1.4rem + 3vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 1rem + 0.8vw, 1.5rem); }

p { color: var(--ink-700); }

.container {
  width: 100%;
  max-width: var(--container-w);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 720px) {
  .container { padding: 0 32px; }
}

section { padding: 72px 0; }
@media (max-width: 720px) { section { padding: 52px 0; } }

.section-tight { padding: 40px 0; }

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--navy-900);
  color: var(--white);
  padding: 10px 18px;
  border-radius: 0 0 8px 0;
  z-index: 200;
}
.skip-link:focus { left: 0; }

/* ---- Eyebrow / kicker ---- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue-600);
  background: var(--blue-100);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.section-head { max-width: 680px; margin-bottom: 40px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { font-size: 1.05rem; margin-top: 12px; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.98rem;
  padding: 14px 26px;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color .15s ease;
  white-space: nowrap;
}
.btn svg { width: 20px; height: 20px; flex-shrink: 0; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-whatsapp {
  background: var(--green-whatsapp-dark);
  color: var(--white);
  box-shadow: 0 6px 18px rgba(37, 211, 102, 0.35);
}
.btn-whatsapp:hover { background: var(--green-whatsapp); }

.btn-primary {
  background: var(--orange-600);
  color: var(--white);
  box-shadow: 0 6px 18px rgba(255, 122, 41, 0.35);
}
.btn-primary:hover { background: var(--orange-500); }

.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.5);
  color: var(--white);
}
.btn-outline:hover { background: rgba(255,255,255,0.12); border-color: var(--white); }

.btn-outline-dark {
  background: transparent;
  border-color: var(--border-200);
  color: var(--navy-900);
}
.btn-outline-dark:hover { border-color: var(--navy-900); background: var(--bg-soft); }

.btn-call {
  background: var(--white);
  color: var(--navy-900);
  border-color: var(--border-200);
}
.btn-call:hover { border-color: var(--navy-900); }

.btn-block { width: 100%; }
.btn-lg { padding: 16px 30px; font-size: 1.05rem; }
.btn-sm { padding: 10px 18px; font-size: 0.88rem; }

.btn-row { display: flex; flex-wrap: wrap; gap: 14px; }

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border-100);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-h);
  gap: 20px;
}

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-mark { width: 46px; height: 46px; object-fit: contain; flex-shrink: 0; }
.logo-mark.on-dark { background: rgba(255,255,255,0.06); border-radius: 50%; padding: 3px; }
.logo-text {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--navy-900);
  letter-spacing: -0.01em;
}
.logo-text .accent { color: var(--orange-500); }

.main-nav ul { display: flex; gap: 28px; }
.main-nav a {
  font-weight: 600;
  font-size: 0.96rem;
  color: var(--ink-700);
  padding: 8px 2px;
  position: relative;
}
.main-nav a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 2px;
  background: var(--orange-500);
  transform: scaleX(0);
  transition: transform 0.2s ease;
}
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--navy-900); }
.main-nav a:hover::after, .main-nav a[aria-current="page"]::after { transform: scaleX(1); }

.main-nav .mobile-cta { display: none; }

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

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-200);
  border-radius: var(--radius-sm);
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 22px; height: 22px; }

@media (max-width: 900px) {
  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: var(--white);
    padding: 24px 20px;
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    overflow-y: auto;
  }
  .main-nav.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .main-nav ul { flex-direction: column; gap: 4px; }
  .main-nav a { display: block; padding: 14px 6px; font-size: 1.05rem; border-bottom: 1px solid var(--border-100); }
  .main-nav .mobile-cta { display: block; margin-top: 18px; }
  .header-actions .btn-whatsapp.desktop-only { display: none; }
  .nav-toggle { display: flex; }
}

.icon-close { display: none; }
.main-nav.is-open ~ .nav-toggle .icon-menu,
.nav-toggle[aria-expanded="true"] .icon-menu { display: none; }
.nav-toggle[aria-expanded="true"] .icon-close { display: block; }

/* ---- Hero ---- */
.hero {
  position: relative;
  background: radial-gradient(1200px 600px at 85% -10%, rgba(28,109,208,0.18), transparent 60%),
              linear-gradient(180deg, var(--navy-900), var(--navy-800));
  color: var(--white);
  padding: 64px 0 88px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  gap: 48px;
  align-items: center;
}
@media (min-width: 960px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; }
}
.hero .eyebrow { background: rgba(255,255,255,0.12); color: var(--white); }
.hero h1 { color: var(--white); }
.hero-lede { font-size: 1.15rem; color: rgba(255,255,255,0.82); margin-top: 18px; max-width: 560px; }
.hero-badges { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 34px; }
.hero-badge { display: flex; align-items: center; gap: 10px; font-size: 0.92rem; color: rgba(255,255,255,0.85); }
.hero-badge svg { width: 20px; height: 20px; color: var(--orange-500); flex-shrink: 0; }
.hero .btn-row { margin-top: 32px; }

.hero-panel {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.14);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(6px);
}
.hero-panel-title { color: var(--white); font-size: 1rem; font-weight: 700; margin-bottom: 18px; display:flex; align-items:center; gap:10px;}
.hero-stat-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.hero-stat { background: rgba(255,255,255,0.07); border-radius: var(--radius-md); padding: 18px; }
.hero-stat strong { display: block; font-family: var(--font-head); font-size: 1.7rem; color: var(--white); }
.hero-stat span { font-size: 0.82rem; color: rgba(255,255,255,0.7); }
.placeholder-note { font-size: 0.72rem; color: rgba(255,255,255,0.55); margin-top: 16px; font-style: italic; }

.hero-panel-eyebrow {
  display: block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  margin-bottom: 18px;
}
.hero-mentor-card { display: flex; align-items: center; gap: 16px; margin-bottom: 20px; }
.hero-mentor-photo {
  width: 92px; height: 92px;
  min-width: 92px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 15%;
  border: 3px solid rgba(255,255,255,0.22);
  flex-shrink: 0;
  display: block;
}
.hero-mentor-info strong { display: block; font-family: var(--font-body); font-weight: 700; font-size: 1.2rem; letter-spacing: -0.01em; color: var(--white); }
.hero-mentor-info span { display: block; font-family: var(--font-body); font-size: 0.86rem; color: rgba(255,255,255,0.65); margin-top: 3px; }
.hero-mentor-quote {
  position: relative;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 1rem;
  line-height: 1.5;
  font-style: normal;
  color: rgba(255,255,255,0.92);
  border-left: 3px solid var(--orange-500);
  padding-left: 16px;
  margin-bottom: 22px;
}
.pill.on-dark { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.18); color: rgba(255,255,255,0.85); }
.pill.on-dark svg { color: var(--orange-500); }

/* ---- Sticky mobile CTA bar ---- */
.mobile-sticky-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 90;
  display: none;
  gap: 10px;
  padding: 10px 14px;
  background: var(--white);
  border-top: 1px solid var(--border-200);
  box-shadow: 0 -8px 24px rgba(16,24,40,0.08);
}
@media (max-width: 720px) {
  .mobile-sticky-cta { display: flex; }
  body { padding-bottom: 74px; }
}
.mobile-sticky-cta .btn { flex: 1; padding: 13px 10px; font-size: 0.9rem; }

/* ---- Cards / Product cards ---- */
.grid-2 { display: grid; gap: 28px; }
@media (min-width: 860px) { .grid-2 { grid-template-columns: 1fr 1fr; } }

.grid-3 { display: grid; gap: 24px; }
@media (min-width: 720px) { .grid-3 { grid-template-columns: repeat(3, 1fr); } }

.card {
  background: var(--white);
  border: 1px solid var(--border-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.product-card {
  background: var(--white);
  border: 1px solid var(--border-200);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-md);
  position: relative;
}
.product-card.is-featured {
  border-color: var(--orange-500);
  box-shadow: 0 20px 50px rgba(255, 122, 41, 0.16);
}
.product-badge {
  position: absolute;
  top: -14px; left: 32px;
  background: var(--orange-500);
  color: var(--white);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}
.product-card h3 { margin-bottom: 6px; }
.product-tagline { color: var(--ink-500); font-size: 0.95rem; margin-bottom: 20px; }
.product-price { display: flex; align-items: baseline; gap: 8px; margin-bottom: 22px; }
.product-price .amount { font-family: var(--font-head); font-size: 2.2rem; font-weight: 800; color: var(--navy-900); }
.product-price .unit { color: var(--ink-500); font-size: 0.9rem; }
.product-features { display: flex; flex-direction: column; gap: 12px; margin-bottom: 26px; flex: 1; }
.product-features li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.96rem; color: var(--ink-700); }
.product-features svg { width: 20px; height: 20px; color: var(--green-success); flex-shrink: 0; margin-top: 2px; }

/* ---- Steps / process ---- */
.steps { display: grid; gap: 24px; }
@media (min-width: 720px) { .steps { grid-template-columns: repeat(4, 1fr); } }
.step { position: relative; padding-top: 8px; }
.step-num {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--navy-900);
  color: var(--white);
  font-family: var(--font-head);
  font-weight: 800;
  margin-bottom: 16px;
}
.step h3 { margin-bottom: 8px; font-size: 1.1rem; }
.step p { font-size: 0.94rem; }

/* ---- Feature list (why choose us) ---- */
.feature {
  display: flex;
  gap: 16px;
  padding: 22px;
  background: var(--bg-soft);
  border-radius: var(--radius-md);
}
.feature-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  background: var(--blue-100);
  color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.feature-icon svg { width: 24px; height: 24px; }
.feature h3 { font-size: 1.02rem; margin-bottom: 6px; }
.feature p { font-size: 0.92rem; }

/* ---- Section variants ---- */
.section-navy { background: var(--navy-900); color: var(--white); }
.section-navy h2, .section-navy h3 { color: var(--white); }
.section-navy p { color: rgba(255,255,255,0.78); }
.section-soft { background: var(--bg-soft); }
.section-cream { background: var(--bg-cream); }

/* ---- Testimonials ---- */
.testimonial-card {
  background: var(--white);
  border: 1px solid var(--border-200);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: var(--shadow-sm);
  height: 100%;
}
.testimonial-quote { font-size: 1rem; color: var(--ink-700); flex: 1; }
.testimonial-quote::before { content: "“"; color: var(--orange-500); font-family: var(--font-head); }
.testimonial-quote::after { content: "”"; color: var(--orange-500); font-family: var(--font-head); }
.testimonial-person { display: flex; align-items: center; gap: 12px; }
.avatar-placeholder {
  width: 46px; height: 46px; border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-500), var(--navy-800));
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head); font-weight: 700; font-size: 0.95rem;
  flex-shrink: 0;
}
.testimonial-person .name { font-weight: 700; font-size: 0.94rem; color: var(--navy-900); }
.testimonial-person .role { font-size: 0.82rem; color: var(--ink-500); }
.placeholder-flag {
  display: inline-block;
  margin-top: 4px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--orange-600);
  background: #fff1e6;
  padding: 3px 8px;
  border-radius: 6px;
}

/* ---- FAQ ---- */
.faq-item {
  border-bottom: 1px solid var(--border-200);
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: none;
  border: none;
  text-align: left;
  padding: 22px 4px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--navy-900);
}
.faq-question svg { width: 22px; height: 22px; flex-shrink: 0; transition: transform 0.2s ease; color: var(--ink-500); }
.faq-question[aria-expanded="true"] svg { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.25s ease;
}
.faq-answer-inner { padding: 0 4px 22px; }
.faq-answer p, .faq-answer li { color: var(--ink-700); font-size: 0.96rem; }
.faq-answer ul { padding-left: 18px; list-style: disc; margin-top: 8px; }

/* ---- Table ---- */
.compare-table-wrap { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--border-200); }
table.compare-table { width: 100%; border-collapse: collapse; min-width: 640px; background: var(--white); }
table.compare-table th, table.compare-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--border-100);
  font-size: 0.95rem;
}
table.compare-table thead th {
  background: var(--navy-900);
  color: var(--white);
  font-family: var(--font-head);
}
table.compare-table tbody tr:last-child td { border-bottom: none; }
table.compare-table td:first-child { font-weight: 600; color: var(--navy-900); width: 40%; }
table.compare-table .yes { color: var(--green-success); font-weight: 700; }
table.compare-table .dash { color: var(--ink-300); }

/* ---- Curriculum accordion / timeline ---- */
.curriculum-item {
  display: flex;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border-100);
}
.curriculum-item:last-child { border-bottom: none; }
.curriculum-index {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--border-200);
  min-width: 52px;
}
.curriculum-item h3 { margin-bottom: 6px; font-size: 1.08rem; }
.curriculum-item p { font-size: 0.94rem; }

/* ---- Breadcrumb ---- */
.breadcrumb { font-size: 0.85rem; color: var(--ink-500); padding: 18px 0 0; }
.breadcrumb a { color: var(--blue-600); font-weight: 600; }
.breadcrumb span { margin: 0 6px; }

/* ---- Page header (non-home pages) ---- */
.page-header {
  background: linear-gradient(180deg, var(--navy-900), var(--navy-800));
  color: var(--white);
  padding: 56px 0 64px;
}
.page-header h1 { color: var(--white); margin-top: 12px; }
.page-header p { color: rgba(255,255,255,0.8); max-width: 620px; margin-top: 14px; font-size: 1.05rem; }
.page-header .breadcrumb { color: rgba(255,255,255,0.6); }
.page-header .breadcrumb a { color: rgba(255,255,255,0.92); }

/* ---- CTA banner ---- */
.cta-banner {
  background: linear-gradient(135deg, var(--orange-500), var(--orange-600));
  border-radius: var(--radius-lg);
  padding: 48px;
  color: var(--white);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.cta-banner h2 { color: var(--white); font-size: 1.7rem; }
.cta-banner p { color: rgba(255,255,255,0.9); margin-top: 8px; }
.cta-banner .btn-primary { background: var(--white); color: var(--orange-600); }
.cta-banner .btn-primary:hover { background: #fff5ee; }

/* ---- Mentor bio block ---- */
.mentor-block { display: grid; gap: 40px; align-items: center; }
@media (min-width: 860px) { .mentor-block { grid-template-columns: 320px 1fr; } }
.mentor-photo-placeholder {
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, var(--navy-800), var(--blue-600));
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.75);
  text-align: center;
  padding: 24px;
  font-size: 0.85rem;
  gap: 10px;
  flex-direction: column;
}
.mentor-photo-placeholder svg { width: 56px; height: 56px; opacity: 0.9; }

.mentor-photo {
  aspect-ratio: 4/5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--navy-800);
}
.mentor-photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.mentor-quote {
  border-left: 4px solid var(--orange-500);
  padding-left: 20px;
  margin: 22px 0;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--navy-900);
  font-style: normal;
}
.mentor-block p:not(.mentor-quote) { margin-bottom: 14px; }
.mentor-block p:not(.mentor-quote):last-child { margin-bottom: 0; }

/* ---- Stats strip ---- */
.stats-strip { display: grid; gap: 20px; }
@media (min-width: 720px) { .stats-strip { grid-template-columns: repeat(4, 1fr); } }
.stat-box { text-align: center; padding: 20px; }
.stat-box strong { display: block; font-family: var(--font-head); font-size: 2.2rem; color: var(--navy-900); }
.stat-box span { font-size: 0.88rem; color: var(--ink-500); }

/* ---- Blog ---- */
.blog-card { display: flex; flex-direction: column; height: 100%; }
.blog-card .blog-thumb {
  aspect-ratio: 16/9;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: linear-gradient(135deg, var(--blue-600), var(--navy-800));
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.8);
}
.blog-card .blog-thumb svg { width: 40px; height: 40px; }
.blog-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.blog-meta { font-size: 0.8rem; color: var(--ink-500); margin-bottom: 10px; }
.blog-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.blog-card p { font-size: 0.93rem; flex: 1; }
.blog-card .btn { margin-top: 16px; align-self: flex-start; }

.article-content { max-width: 720px; margin: 0 auto; }
.article-content h2 { margin-top: 40px; margin-bottom: 16px; }
.article-content h3 { margin-top: 28px; margin-bottom: 12px; }
.article-content p { margin-bottom: 16px; font-size: 1.02rem; }
.article-content ul, .article-content ol { margin: 16px 0 16px 22px; }
.article-content li { margin-bottom: 8px; font-size: 1.02rem; color: var(--ink-700); }
.article-content a { color: var(--blue-600); font-weight: 600; text-decoration: underline; }
.article-hero-meta { display: flex; gap: 16px; align-items: center; color: rgba(255,255,255,0.75); font-size: 0.9rem; margin-top: 18px; }
.article-callout {
  background: var(--blue-100);
  border-left: 4px solid var(--blue-600);
  border-radius: var(--radius-sm);
  padding: 18px 20px;
  margin: 24px 0;
}
.article-callout p { margin: 0; color: var(--navy-900); font-weight: 600; font-size: 0.96rem; }

/* ---- Contact page ---- */
.contact-grid { display: grid; gap: 28px; }
@media (min-width: 860px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
.contact-method {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  border: 1px solid var(--border-200);
  border-radius: var(--radius-md);
}
.contact-method .feature-icon { background: var(--orange-500); color: var(--white); }
.contact-method h3 { font-size: 1.02rem; margin-bottom: 4px; }
.contact-method p { font-size: 0.92rem; margin-bottom: 12px; }
.map-embed { border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--border-200); }
.map-embed iframe { width: 100%; height: 320px; border: 0; display: block; }

/* ---- Footer ---- */
.site-footer { background: var(--navy-900); color: rgba(255,255,255,0.75); padding: 64px 0 28px; }
.footer-grid { display: grid; gap: 40px; }
@media (min-width: 860px) { .footer-grid { grid-template-columns: 1.4fr 1fr 1fr 1.2fr; } }
.footer-brand .logo-text { color: var(--white); }
.footer-brand p { color: rgba(255,255,255,0.65); margin-top: 14px; font-size: 0.92rem; max-width: 300px; }
.footer-col h4 { color: var(--white); font-family: var(--font-head); font-size: 0.95rem; margin-bottom: 16px; }
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 0.92rem; color: rgba(255,255,255,0.7); }
.footer-col a:hover { color: var(--white); }
.footer-social { display: flex; gap: 10px; margin-top: 16px; }
.footer-social a {
  width: 38px; height: 38px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.footer-social a:hover { background: rgba(255,255,255,0.1); }
.footer-social svg { width: 18px; height: 18px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  margin-top: 48px;
  padding-top: 24px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
}
.footer-bottom a { color: rgba(255,255,255,0.55); }
.footer-bottom a:hover { color: var(--white); }

/* ---- Utility ---- */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ---- Scroll reveal (progressive enhancement — JS adds .reveal-armed, so
   content stays visible by default if JS never runs) ---- */
.reveal.reveal-armed {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s cubic-bezier(.2,.7,.3,1), transform 0.7s cubic-bezier(.2,.7,.3,1);
}
.reveal.reveal-armed.is-visible { opacity: 1; transform: none; }
.reveal-stagger.reveal-armed > * {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal-stagger.reveal-armed.is-visible > * { opacity: 1; transform: none; }
.reveal-stagger.reveal-armed.is-visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.reveal-armed.is-visible > *:nth-child(2) { transition-delay: .08s; }
.reveal-stagger.reveal-armed.is-visible > *:nth-child(3) { transition-delay: .16s; }
.reveal-stagger.reveal-armed.is-visible > *:nth-child(4) { transition-delay: .24s; }
.reveal-stagger.reveal-armed.is-visible > *:nth-child(5) { transition-delay: .32s; }
.reveal-stagger.reveal-armed.is-visible > *:nth-child(6) { transition-delay: .4s; }

/* ---- Gradient text accent ---- */
.text-gradient {
  background: linear-gradient(100deg, #ffffff 0%, #bcd4ff 45%, var(--orange-500) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ---- Hero decorative shapes (pure CSS, no image weight) ---- */
.hero-decor {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}
.hero-decor::before, .hero-decor::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
}
.hero-decor::before {
  width: 520px; height: 520px;
  right: -180px; top: -220px;
  background: radial-gradient(circle at 35% 35%, rgba(19,107,251,0.5), rgba(19,107,251,0) 70%);
}
.hero-decor::after {
  width: 420px; height: 420px;
  left: -140px; bottom: -180px;
  background: radial-gradient(circle at 60% 60%, rgba(252,54,29,0.28), rgba(252,54,29,0) 70%);
}
.hero-dotgrid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.14) 1px, transparent 1.5px);
  background-size: 26px 26px;
  mask-image: linear-gradient(180deg, rgba(0,0,0,0.9), rgba(0,0,0,0.15));
  z-index: 0;
}
.hero-grid, .hero > .container { position: relative; z-index: 1; }

/* ---- Section backdrop dot texture (subtle, light sections) ---- */
.section-dotgrid { position: relative; }
.section-dotgrid::before {
  content: "";
  position: absolute; inset: 0;
  background-image: radial-gradient(var(--border-200) 1px, transparent 1.5px);
  background-size: 22px 22px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 0%, rgba(0,0,0,0.55), transparent 75%);
  opacity: 0.7;
  pointer-events: none;
}
.section-dotgrid > .container { position: relative; }

/* ---- Elevated hover interactions ---- */
.product-card, .testimonial-card, .blog-card, .feature, .card {
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.product-card:hover, .testimonial-card:hover, .blog-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.feature:hover { transform: translateY(-4px); }
.step:hover .step-num { transform: scale(1.08); }
.step-num { transition: transform 0.25s ease; }

/* ---- Vertical connector timeline (curriculum breakdown) ---- */
.timeline { position: relative; padding-left: 0; }
.timeline::before {
  content: "";
  position: absolute;
  left: 25px; top: 6px; bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--blue-600), var(--border-200));
}
.timeline-item {
  position: relative;
  display: flex;
  gap: 22px;
  padding: 0 0 30px 0;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-node {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--white);
  border: 2px solid var(--blue-600);
  color: var(--blue-600);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1.1rem;
}
.timeline-item.is-plus .timeline-node { border-color: var(--orange-500); color: var(--orange-500); }
.timeline-body h3 { margin-bottom: 6px; font-size: 1.06rem; }
.timeline-body p { font-size: 0.93rem; margin: 0; }

/* ---- Compact stat pill row (used to replace dense text blocks) ---- */
.pill-row { display: flex; flex-wrap: wrap; gap: 10px; }
.pill {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border-200);
  border-radius: var(--radius-pill);
  padding: 8px 14px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ink-700);
}
.pill svg { width: 16px; height: 16px; color: var(--blue-600); flex-shrink: 0; }
.pill-row--tight { gap: 8px; }
.pill-row--tight .pill { padding: 7px 11px; font-size: 0.8rem; white-space: nowrap; }
.pill-row--tight .pill svg { width: 14px; height: 14px; }

/* ---- Comparison split (Without PDE / With PDE) ---- */
.split-compare { display: grid; gap: 20px; }
@media (min-width: 720px) { .split-compare { grid-template-columns: 1fr 1fr; } }
.split-card { border-radius: var(--radius-lg); padding: 28px; }
.split-card.is-without { background: var(--bg-soft); border: 1px dashed var(--border-200); }
.split-card.is-with { background: linear-gradient(160deg, var(--navy-900), var(--navy-800)); color: var(--white); }
.split-card h3 { font-size: 1.05rem; margin-bottom: 16px; }
.split-card.is-with h3 { color: var(--white); }
.split-list { display: flex; flex-direction: column; gap: 12px; }
.split-list li { display: flex; gap: 10px; align-items: flex-start; font-size: 0.94rem; }
.split-list svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 2px; }
.is-without .split-list svg { color: var(--ink-300); }
.is-with .split-list svg { color: var(--green-success); }
.is-with .split-list li { color: rgba(255,255,255,0.88); }

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