/* ═══ HERO ════════════════════════════════════════════════ */
.hero {
  padding: 120px 24px 100px;
}
.hero-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: start; position: relative;
}
.hero h1 { margin-bottom: 0; }
.hero-byline {
  display: inline-flex; align-items: center;
  font-family: var(--mono); font-size: clamp(20px, 2.5vw, 32px); font-weight: 400;
  color: var(--t2); letter-spacing: 0; line-height: 1.25;
  margin-top: 10px; margin-bottom: 36px;
}
.hero-lead { font-size: 20px; color: var(--t2); line-height: 1.65; font-weight: 400; margin-bottom: 48px; }
.hero-cta  { display: flex; gap: 10px; flex-wrap: wrap; }

.author-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 24px; position: relative; overflow: hidden;
}
.author-profile { display: flex; gap: 14px; align-items: flex-start; }
.author-avatar {
  width: 72px; height: 72px; border-radius: 50%;
  background: var(--hover); border: 2px solid var(--violet);
  flex-shrink: 0; overflow: hidden;
}
.author-avatar img { width: 100%; height: 100%; object-fit: cover; }
.author-body p { font-size: 17px; line-height: 1.78; color: var(--t2); margin-bottom: 12px; }
.author-body p:last-child { margin-bottom: 0; }

/* ═══ COURSE FOCUS ════════════════════════════════════════ */
.focus-header { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: end; margin-bottom: 48px; }
.focus-aside  { background: var(--card); border: 1px solid var(--border); border-radius: var(--r); padding: 22px 24px; }
.focus-aside p { font-size: 17px; line-height: 1.78; color: var(--t2); margin: 0; }

/* ═══ TARGET AUDIENCE ═════════════════════════════════════ */
.audience-layout { display: grid; grid-template-columns: 1fr 300px; gap: 80px; align-items: start; }
.profiles-list   { display: flex; flex-direction: column; margin-top: 40px; }

.profile-item {
  display: grid; grid-template-columns: 32px 1fr; gap: 16px;
  align-items: start; padding: 24px 0;
  border-bottom: 1px solid var(--border);
}
.profile-item:first-child { border-top: 1px solid var(--border); }
.profile-marker { font-family: var(--mono); font-size: 10px; font-weight: 700; color: var(--t2); padding-top: 3px; }
.sect-green .profile-marker { color: color-mix(in oklab, var(--t3) 30%, var(--green) 70%); }
.profile-item h4 { margin-bottom: 6px; }
.profile-item p  { font-size: 17px; line-height: 1.78; color: var(--t2); margin: 0; }

.audience-cta-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 28px 24px;
  position: sticky; top: 64px;
}
.audience-cta-card h3 { margin-bottom: 12px; }
.audience-cta-card p  { font-size: 17px; line-height: 1.78; color: var(--t2); margin-bottom: 24px; }

/* ═══ PRICING ══════════════════════════════════════════════ */
.pricing-header-row { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 48px; gap: 40px; }

.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.pricing-card {
  background: var(--card); border: 1px solid var(--border);
  border-top: 2px solid var(--border);
  border-radius: var(--r); padding: 28px 24px;
  display: flex; flex-direction: column;
}
.pricing-card.featured {
  border-color: color-mix(in oklab, var(--border) 20%, var(--amber) 80%);
  border-top-color: var(--amber);
}
.plan-tier {
  font-size: 9px; font-weight: 700; color: var(--t2);
  text-transform: uppercase; letter-spacing: 1.2px;
  font-family: var(--mono); display: block; margin-bottom: 10px;
}
.pricing-card.featured .plan-tier { color: color-mix(in oklab, var(--t3) 40%, var(--amber) 60%); }
.plan-name { font-size: 22px; font-weight: 700; letter-spacing: -0.5px; color: var(--t1); margin-bottom: 16px; line-height: 1.15; }
.plan-price { font-size: 44px; font-weight: 700; letter-spacing: -3px; color: var(--t1); line-height: 1; }
.plan-price-cur { font-size: 20px; font-weight: 400; color: var(--t2); letter-spacing: 0; vertical-align: super; margin-right: 2px; }
.plan-sep { height: 1px; background: var(--border); margin: 22px 0; }
.pricing-card.featured .plan-sep { background: color-mix(in oklab, var(--border) 50%, var(--amber) 50%); }
.plan-features { flex: 1; display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.plan-feature  { display: flex; gap: 10px; align-items: flex-start; }
.plan-check    { font-family: var(--mono); font-size: 10px; font-weight: 700; color: var(--t2); flex-shrink: 0; margin-top: 4px; line-height: 1.5; }
.pricing-card.featured .plan-check { color: var(--amber); }
.plan-feature-text { font-size: 15px; color: var(--t2); line-height: 1.5; }
.plan-cta {
  display: block; padding: 10px 16px; background: transparent;
  border: 1px solid var(--t3); border-radius: 8px;
  color: var(--t2); font-family: inherit; font-size: 14px; font-weight: 600;
  text-decoration: none; text-align: center; cursor: pointer;
  transition: border-color .12s, color .12s;
}
.plan-cta:hover { border-color: var(--t2); color: var(--t1); }
.pricing-card.featured .plan-cta { background: var(--t1); border-color: var(--t1); color: var(--bg); }
.pricing-card.featured .plan-cta:hover { background: var(--t2); border-color: var(--t2); }

.pricing-note { text-align: center; margin-top: 32px; }
.pricing-note p { font-size: 15px; color: var(--t2); font-style: italic; margin: 0; }

/* ═══ WORKFLOW ═════════════════════════════════════════════ */
.workflow-header-row { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 48px; gap: 40px; }
.workflow-sub { font-size: 15px; color: var(--t2); margin-bottom: 16px; }

.format-tabs { display: flex; gap: 2px; background: var(--hover); border-radius: 8px; padding: 3px; }
.format-tab {
  padding: 7px 16px; border-radius: 6px;
  font-family: var(--mono); font-size: 11px; font-weight: 700;
  color: var(--t2); cursor: pointer;
  transition: background .12s, color .12s;
  text-transform: uppercase; letter-spacing: 0.5px; user-select: none;
}
.format-tab.active { background: var(--card); color: var(--t1); }

.timeline-content { display: none; }
.timeline-content.active { display: block; }
.timeline-container { display: flex; flex-direction: column; margin-bottom: 32px; }

.timeline-item {
  display: grid;
  grid-template-columns: 130px 20px 1fr;
  column-gap: 24px;
}
.tl-step { text-align: right; padding-top: 1px; }
.tl-step-label { font-family: var(--mono); font-size: 10px; font-weight: 700; color: var(--t2); text-transform: uppercase; letter-spacing: 0.8px; }
.sect-purple .tl-step-label { color: color-mix(in oklab, var(--t1) 62%, var(--purple)); }
.tl-step-dur   { font-size: 13px; color: var(--t2); margin-top: 3px; line-height: 1.4; }
.tl-marker { display: flex; flex-direction: column; align-items: center; }
.tl-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--t3);
  flex-shrink: 0; margin-top: 3px;
}
.tl-dot.hollow { background: transparent; border: 1.5px solid var(--t3); }
.tl-line { flex: 1; width: 1px; background: var(--border); margin: 6px 0 0; min-height: 32px; }
.sect-purple .tl-dot        { background: color-mix(in oklab, var(--t3) 35%, var(--purple) 65%); }
.sect-purple .tl-dot.hollow { background: transparent; border-color: color-mix(in oklab, var(--t3) 35%, var(--purple) 65%); }
.sect-purple .tl-line       { background: color-mix(in oklab, var(--border) 50%, var(--purple) 50%); }
.tl-desc { padding-bottom: 32px; }
.tl-desc h4 { margin-bottom: 8px; }
.tl-desc p  { font-size: 15px; line-height: 1.6; color: var(--t2); margin-bottom: 8px; }
.tl-desc p:last-child { margin-bottom: 0; }
.tl-desc ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 4px; margin-top: 8px; }
.tl-desc ul li { font-size: 14px; color: var(--t2); padding-left: 14px; position: relative; line-height: 1.5; }
.tl-desc ul li::before { content: '—'; position: absolute; left: 0; color: var(--t3); }

.workflow-ideal {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--r);
  padding: 20px 24px;
}
.workflow-ideal .wi-label { font-family: var(--mono); font-size: 9px; font-weight: 700; color: var(--t2); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.workflow-ideal p { font-size: 15px; color: var(--t2); margin: 0; line-height: 1.6; }

/* ═══ CURRICULUM ═══════════════════════════════════════════ */
.curriculum-lead { font-size: 17px; color: var(--t2); margin-bottom: 64px; }

.step-block {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0 40px;
  align-items: start;
  padding-top: 20px;
  border-top: 2px solid var(--border);
  margin-bottom: 48px;
}
.step-block:last-child { margin-bottom: 0; }

.step-info { padding-top: 2px; }
.step-idx {
  display: block;
  font-size: 10px; font-weight: 700; color: var(--t3);
  text-transform: uppercase; letter-spacing: 1.5px;
  font-family: var(--mono); margin-bottom: 8px;
}

.step-blue   { border-top-color: color-mix(in oklab, var(--border) 30%, var(--blue) 70%); }
.step-blue   .step-idx  { color: color-mix(in oklab, var(--t3) 30%, var(--blue) 70%); }
.step-blue   h3         { color: color-mix(in oklab, var(--t1) 80%, var(--blue) 20%); }
.step-blue   .module-card { border-left: 2px solid color-mix(in oklab, var(--border) 40%, var(--blue) 60%); }
.step-blue   .module-card .card-idx { color: var(--blue); }

.step-amber  { border-top-color: color-mix(in oklab, var(--border) 30%, var(--amber) 70%); }
.step-amber  .step-idx  { color: color-mix(in oklab, var(--t3) 30%, var(--amber) 70%); }
.step-amber  h3         { color: color-mix(in oklab, var(--t1) 80%, var(--amber) 20%); }
.step-amber  .module-card { border-left: 2px solid color-mix(in oklab, var(--border) 40%, var(--amber) 60%); }
.step-amber  .module-card .card-idx { color: var(--amber); }

.step-green  { border-top-color: color-mix(in oklab, var(--border) 30%, var(--green) 70%); }
.step-green  .step-idx  { color: color-mix(in oklab, var(--t3) 30%, var(--green) 70%); }
.step-green  h3         { color: color-mix(in oklab, var(--t1) 80%, var(--green) 20%); }
.step-green  .module-card { border-left: 2px solid color-mix(in oklab, var(--border) 40%, var(--green) 60%); }
.step-green  .module-card .card-idx { color: var(--green); }

.step-purple { border-top-color: color-mix(in oklab, var(--border) 30%, var(--purple) 70%); }
.step-purple .step-idx  { color: color-mix(in oklab, var(--t3) 30%, var(--purple) 70%); }
.step-purple h3         { color: color-mix(in oklab, var(--t1) 80%, var(--purple) 20%); }
.step-purple .module-card { border-left: 2px solid color-mix(in oklab, var(--border) 40%, var(--purple) 60%); }
.step-purple .module-card .card-idx { color: var(--purple); }

.modules-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

.module-card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 24px;
  display: grid; grid-template-columns: auto 1fr; column-gap: 10px; align-items: baseline;
}
.module-card .card-idx   { margin-bottom: 0; }
.module-card h4           { margin-bottom: 0; }
.module-card .module-desc,
.module-card .module-topics { grid-column: 1 / -1; margin-top: 12px; }

.module-desc   { font-size: 17px; line-height: 1.78; color: var(--t2); margin-bottom: 0; }
.module-topics { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.module-topics li {
  font-size: 15px; line-height: 1.6; color: var(--t2);
  padding-left: 16px; position: relative;
}
.module-topics li::before { content: '—'; position: absolute; left: 0; color: var(--t3); }

.curriculum-summary {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--r); padding: 28px 32px;
  margin-top: 64px; text-align: center;
}
.curriculum-summary h3 { margin-bottom: 10px; }
.curriculum-summary p  { font-size: 17px; color: var(--t2); max-width: 60ch; margin: 0 auto; }

/* ═══ FOOTER ═══════════════════════════════════════════════ */
.footer {
  background: var(--bg); border-top: 1px solid var(--border);
  padding: 56px 24px 32px;
}
.footer-inner {
  max-width: var(--max-w); margin: 0 auto;
  display: grid; grid-template-columns: 1fr auto; gap: 80px; margin-bottom: 48px;
}
.footer-brand-mark {
  display: inline-flex; align-items: center;
  font-family: var(--mono); font-size: 20px; font-weight: 400;
  line-height: 1.25;
  color: var(--t1); letter-spacing: 0; margin-bottom: 12px;
}
.footer-brand p  { font-size: 15px; color: var(--t2); line-height: 1.65; max-width: 42ch; margin: 0; }
.footer-links-row { display: flex; gap: 64px; }
.footer-col h4 {
  font-family: var(--mono); font-size: 9px; font-weight: 700;
  color: var(--t3); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px;
}
.footer-col ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-col a  { font-size: 14px; color: var(--t2); text-decoration: none; transition: color .12s; }
.footer-col a:hover { color: var(--t1); }
.footer-bottom {
  max-width: var(--max-w); margin: 0 auto;
  border-top: 1px solid var(--border); padding-top: 24px;
  display: flex; flex-direction: column; gap: 4px;
}
.footer-bottom p { font-size: 11px; color: var(--t3); font-family: var(--mono); margin: 0; line-height: 1.6; }

/* ─── RESPONSIVE ───────────────────────────────────────── */
@media (max-width: 900px) {
  .hero-inner     { grid-template-columns: 1fr; gap: 48px; }
  .focus-header   { grid-template-columns: 1fr; gap: 28px; }
  .card-grid      { grid-template-columns: 1fr 1fr; }
  .audience-layout { grid-template-columns: 1fr; }
  .audience-cta-card { position: static; }
  .modules-grid   { grid-template-columns: 1fr; }
  .pricing-grid   { grid-template-columns: 1fr; }
  .pricing-header-row { flex-direction: column; align-items: flex-start; }
  .workflow-header-row { flex-direction: column; align-items: flex-start; }
  .footer-inner   { grid-template-columns: 1fr; gap: 40px; }
  .timeline-item  { grid-template-columns: 100px 20px 1fr; }
}
@media (max-width: 640px) {
  .hero { padding-top: 72px; padding-bottom: 64px; }
  .page-section { padding-top: 80px; padding-bottom: 80px; }
  .hero, .page-section { padding-left: 20px; padding-right: 20px; }
  .card-grid { grid-template-columns: 1fr; }
  .format-tabs { flex-direction: column; }
  .timeline-item { grid-template-columns: 80px 16px 1fr; column-gap: 12px; }
  .footer-links-row { flex-direction: column; gap: 32px; }
}