:root {
  --background: #ffffff;
  --surface: #ffffff;
  --surface-alt: #f5f5f5;
  --text: #1b3255;
  --muted: #4a5d78;
  --subtle: #7a8698;
  --border: #e2e8f0;

  --accent: #ff6b35;
  --accent-hover: #e05523;
  --accent-soft: #fff0eb;

  --dark-bg: #1b3255;
  --dark-surface: #24416b;
  --dark-border: #325485;
  --dark-text: #f5f5f5;
  --dark-muted: #c9ced6;

  --radius-sm: 8px;
  --radius: 12px;
  --radius-lg: 20px;

  --mono: 'Fira Code', ui-monospace, SFMono-Regular, Menlo, monospace;

  --shadow-sm: 0 1px 2px 0 rgb(27 50 85 / 0.05);
  --shadow: 0 10px 30px -10px rgb(27 50 85 / 0.1);
  --shadow-lg: 0 20px 40px -15px rgb(27 50 85 / 0.18);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  color: var(--text);
  background: var(--background);
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

.container {
  width: min(100% - 2.5rem, 1240px);
  margin-inline: auto;
}

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

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--accent);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 700;
}
.skip-link:focus { left: 0; }

:where(a, button, summary, input, select, textarea):focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 80px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: 100%;
}

.logo { display: flex; align-items: center; gap: 0.625rem; }
.logo-img { width: 36px; height: 36px; object-fit: contain; }

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text);
}

.main-nav { display: flex; align-items: center; gap: 1.75rem; }

.main-nav a {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--muted);
  transition: color 150ms ease;
  white-space: nowrap;
}

.main-nav a:hover { color: var(--accent); }

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 52px;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
  border: 1px solid transparent;
}

.button-primary {
  background: var(--accent);
  color: #ffffff;
  box-shadow: 0 4px 14px rgb(255 107 53 / 0.35);
}

.button-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgb(255 107 53 / 0.45);
}

.button-primary[disabled] { opacity: 0.7; cursor: progress; transform: none; }

.button-secondary {
  background: #ffffff;
  color: var(--text);
  border-color: var(--border);
}

.button-secondary:hover {
  background: var(--surface-alt);
  border-color: #cbd5e1;
  transform: translateY(-2px);
}

.button-nav {
  min-height: 44px;
  padding-inline: 1.25rem;
  font-size: 0.9375rem;
}

.button-full { width: 100%; }

/* Badges & Typography */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin: 0 0 1.25rem;
}

.badge-dark { background: rgba(255, 107, 53, 0.18); color: #ff8c61; }

h1 {
  font-size: clamp(2rem, 4.6vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0;
  color: var(--text);
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.75rem, 3.8vw, 2.85rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  text-wrap: balance;
}

h3 {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 0.6rem;
}

.accent-text { color: var(--accent); }

/* Sections */
.section { padding-block: 5.5rem; }

.section-alt {
  background: var(--surface-alt);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section-dark { background: var(--dark-bg); color: var(--dark-text); }

.section-header { max-width: 46rem; margin-bottom: 3.25rem; }
.section-header.text-center { margin-inline: auto; text-align: center; }

.section-lead {
  font-size: 1.15rem;
  color: var(--muted);
  line-height: 1.6;
  margin: 0;
}

/* Hero */
.hero-section {
  padding-block: 4rem 5rem;
  background: linear-gradient(180deg, #ffffff 0%, var(--surface-alt) 100%);
  border-bottom: 1px solid var(--border);
}

.hero-header { max-width: 62rem; margin-bottom: 2.5rem; }

.hero-grid { display: grid; gap: 2.5rem; align-items: center; }

.hero-lead {
  font-size: 1.15rem;
  color: var(--muted);
  line-height: 1.65;
  margin: 0 0 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  margin: 0 0 1.75rem;
  padding: 0;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow-sm);
}

.stat-label {
  font-size: 0.75rem;
  color: var(--subtle);
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 0.25rem;
}

.stat-value {
  font-family: var(--mono);
  font-size: clamp(1.25rem, 3.4vw, 1.6rem);
  font-weight: 700;
  color: var(--accent);
  margin: 0;
  line-height: 1.1;
}

.hero-trust { padding-top: 1.25rem; border-top: 1px solid var(--border); }

.trust-text {
  font-size: 0.875rem;
  color: var(--subtle);
  font-weight: 500;
  margin: 0;
}

.hero-media { position: relative; }

.image-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  background: #ffffff;
}

.image-card img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.image-overlay-badge {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0.55rem 1rem;
  background: rgba(27, 50, 85, 0.9);
  backdrop-filter: blur(8px);
  color: #ffffff;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 8px var(--accent);
}

/* Idea cards */
.idea-cards-grid { display: grid; gap: 1.5rem; }

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: transform 200ms ease, box-shadow 200ms ease;
}

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

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--radius);
  background: var(--accent-soft);
  color: var(--accent);
  margin-bottom: 1.35rem;
}

.feature-card p { color: var(--muted); margin: 0; font-size: 1rem; }

/* Earnings / referral panel */
.earnings-panel {
  display: grid;
  gap: 2.5rem;
  background: var(--dark-bg);
  color: var(--dark-text);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 3.25rem);
  box-shadow: var(--shadow-lg);
  background-image: radial-gradient(circle at 100% 0%, rgba(255, 107, 53, 0.22), transparent 55%);
}

.earnings-panel h2 { color: #ffffff; }

.earnings-lead {
  font-size: 1.1rem;
  color: var(--dark-muted);
  margin: 0 0 2rem;
}

.earnings-lead strong { color: #ffffff; }

.earnings-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.earnings-points li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
}

.earnings-figure {
  font-family: var(--mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: #ff8c61;
  min-width: 3.25rem;
  line-height: 1.3;
}

.earnings-text { font-size: 0.9375rem; color: var(--dark-muted); }
.earnings-text strong { color: #ffffff; }

.fine-print {
  max-width: 62rem;
  margin: 1.5rem auto 0;
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--subtle);
}

/* Benefits grid */
.benefits-grid { display: grid; gap: 1.5rem; }

.benefit-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  position: relative;
}

.card-number {
  font-family: var(--mono);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent);
  margin: 0 0 1.1rem;
  letter-spacing: 0.1em;
}

.benefit-card p { color: var(--muted); margin: 0; }

.highlight-card {
  border-color: var(--accent);
  background: linear-gradient(135deg, #ffffff 0%, #fff5f0 100%);
  box-shadow: 0 10px 30px -14px rgb(255 107 53 / 0.45);
}

/* Student experience split */
.split-section { display: grid; gap: 2.75rem; align-items: center; }

.split-media {
  margin: 0 0 1.75rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

.split-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.split-content .section-lead { margin-bottom: 1.75rem; }

.experience-list { display: flex; flex-direction: column; gap: 1rem; }

.experience-item {
  display: flex;
  align-items: flex-start;
  gap: 1.1rem;
  background: var(--surface);
  padding: 1.15rem 1.35rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.check-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.experience-item h3 { margin: 0 0 0.25rem; font-size: 1.05rem; font-weight: 700; }
.experience-item p { margin: 0; font-size: 0.9375rem; color: var(--muted); }

/* FAQ */
.faq-list {
  display: grid;
  gap: 0.85rem;
  max-width: 52rem;
  margin-inline: auto;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.35rem 1.35rem;
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  list-style: none;
  cursor: pointer;
  padding-block: 1.1rem;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text);
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 1.4rem;
  line-height: 1;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 200ms ease;
}

.faq-item[open] summary::after { content: "–"; }

.faq-item p {
  margin: 0 0 1.15rem;
  color: var(--muted);
  font-size: 0.9375rem;
  max-width: 46rem;
}

/* Dark form section */
.form-grid { display: grid; gap: 3rem; }

.form-info p { color: var(--dark-muted); font-size: 1.1rem; margin-bottom: 1.75rem; }
.form-info h2 { color: #ffffff; }

.info-box {
  background: var(--dark-surface);
  border: 1px solid var(--dark-border);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
}

.info-title { font-weight: 700; margin: 0 0 1rem; color: #ffffff; font-size: 1rem; }

.info-list {
  margin: 0;
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  color: var(--dark-muted);
  font-size: 0.9375rem;
}

.info-contact { font-size: 0.9375rem; margin-top: 1.25rem; }
.info-contact a { color: #ff8c61; font-weight: 600; text-decoration: underline; }

.form-wrapper {
  background: var(--surface);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 3vw, 2.5rem);
  color: var(--text);
  box-shadow: var(--shadow-lg);
}

.partner-form { display: flex; flex-direction: column; gap: 1.15rem; }

.form-row { display: grid; gap: 1.15rem; }

.form-group { display: flex; flex-direction: column; gap: 0.45rem; }

.form-group label { font-size: 0.875rem; font-weight: 600; color: var(--text); }

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  background: #ffffff;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}

.form-group textarea { resize: vertical; min-height: 96px; }

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgb(255 107 53 / 0.18);
}

.field-hint { font-size: 0.75rem; color: var(--subtle); }

.form-disclaimer {
  font-size: 0.8125rem;
  color: var(--subtle);
  text-align: center;
  margin: 0.35rem 0 0;
}

.form-status {
  margin: 0;
  padding: 1rem 1.15rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
}

.form-success { background: var(--accent-soft); color: var(--text); border: 1px solid var(--accent); }
.form-error { background: #fff4f4; color: #8a1c1c; border: 1px solid #f0c2c2; }
.form-error a { text-decoration: underline; }

/* Footer */
.site-footer {
  background: var(--dark-bg);
  color: var(--dark-text);
  border-top: 1px solid var(--dark-border);
  padding-block: 3.5rem 2.25rem;
}

.footer-inner { display: flex; flex-direction: column; gap: 2.25rem; }

.footer-top { display: grid; gap: 2rem; }

.footer-brand .logo-text { color: #ffffff; }

.footer-tagline {
  color: var(--dark-muted);
  max-width: 26rem;
  font-size: 0.9375rem;
  margin: 0.75rem 0 0;
}

.footer-tagline a { color: #ff8c61; font-weight: 600; }

.footer-links { display: flex; flex-wrap: wrap; gap: 1.5rem; }

.footer-links a {
  color: var(--dark-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 150ms ease;
}

.footer-links a:hover { color: #ffffff; }

.footer-bottom {
  padding-top: 1.75rem;
  border-top: 1px solid var(--dark-border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.8125rem;
  color: var(--dark-muted);
}

/* Responsive */
@media (min-width: 768px) {
  .idea-cards-grid { grid-template-columns: repeat(3, 1fr); }
  .benefits-grid { grid-template-columns: repeat(2, 1fr); }
  .form-row { grid-template-columns: repeat(2, 1fr); }
  .footer-bottom { flex-direction: row; justify-content: space-between; align-items: center; }
  .footer-top { grid-template-columns: 1.4fr 1fr; align-items: start; }
  .earnings-panel { grid-template-columns: 1.05fr 0.95fr; align-items: center; }
}

@media (min-width: 992px) {
  .hero-grid { grid-template-columns: 1.05fr 0.95fr; align-items: center; }
  .split-section { grid-template-columns: 0.95fr 1.05fr; }
  .form-grid { grid-template-columns: 1fr 1.15fr; align-items: start; }
  .benefits-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-links { justify-content: flex-end; }
}

@media (max-width: 991px) {
  .main-nav { display: none; }
  .site-header { height: 72px; }
  html { scroll-padding-top: 84px; }
}

@media (max-width: 640px) {
  .section { padding-block: 3.5rem; }
  .hero-section { padding-block: 2.5rem 3.5rem; }
  .section-header { margin-bottom: 2.25rem; }
  .hero-actions .button { width: 100%; }
  .hero-stats { grid-template-columns: 1fr; gap: 0.6rem; }
  .stat { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 0.75rem 1rem; }
  .stat-label { margin: 0; }
  .feature-card, .benefit-card { padding: 1.5rem; }
  .split-content > .button { width: 100%; }
  .earnings-points li { flex-direction: row; }
  .faq-item summary { font-size: 0.98rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
  .button:hover, .feature-card:hover { transform: none; }
}