:root {
  --bg: #061116;
  --bg-deep: #03080b;
  --panel: #0b1820;
  --panel-2: #101f27;
  --ink: #f7fbff;
  --muted: #95a8b2;
  --soft: #d8e5eb;
  --cyan: #19d8ff;
  --cyan-2: #8ef1ff;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(25, 216, 255, 0.34);
  --amber: #d9b46a;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --font-display: "Bricolage Grotesque", "Manrope", system-ui, sans-serif;
  --font-body: "Manrope", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 75% 8%, rgba(25, 216, 255, 0.16), transparent 26rem),
    radial-gradient(circle at 18% 18%, rgba(217, 180, 106, 0.08), transparent 22rem),
    linear-gradient(180deg, var(--bg), var(--bg-deep) 46%, #071016);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

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

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

.noise {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
  opacity: 0.055;
  background-image:
    repeating-radial-gradient(circle at 10% 20%, rgba(255,255,255,.4) 0 1px, transparent 1px 5px);
  mix-blend-mode: screen;
}

.cursor-glow {
  position: fixed;
  width: 22rem;
  height: 22rem;
  border-radius: 999px;
  pointer-events: none;
  z-index: 1;
  opacity: 0.22;
  transform: translate3d(-50%, -50%, 0);
  background: radial-gradient(circle, rgba(25, 216, 255, 0.32), transparent 68%);
}

.site-header {
  position: fixed;
  top: 1.25rem;
  left: 50%;
  z-index: 9;
  width: min(1120px, calc(100% - 2rem));
  transform: translateX(-50%);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 1rem;
  padding: 0.45rem 0.55rem 0.45rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 999px;
  background: rgba(3, 8, 11, 0.72);
  backdrop-filter: blur(22px);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.12), 0 24px 80px rgba(0,0,0,.22);
}

.brand img {
  width: 148px;
  height: auto;
}

.desktop-nav {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.desktop-nav a {
  transition: color 500ms var(--ease), transform 500ms var(--ease);
}

.desktop-nav a:hover {
  color: var(--ink);
  transform: translateY(-1px);
}

.social-actions {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.social-pill {
  width: 2.6rem;
  height: 2.6rem;
  display: grid;
  place-items: center;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255,255,255,.055);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 800;
  transition: transform 700ms var(--ease), border-color 700ms var(--ease), background 700ms var(--ease);
}

.social-pill:hover {
  border-color: rgba(25,216,255,.34);
  background: rgba(25,216,255,.1);
}

.nav-cta,
.button,
.contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7rem;
  border: 0;
  border-radius: 999px;
  transition: transform 700ms var(--ease), background 700ms var(--ease), color 700ms var(--ease), border-color 700ms var(--ease);
}

.nav-cta {
  padding: 0.4rem 0.45rem 0.4rem 1rem;
  background: var(--ink);
  color: #061116;
  font-weight: 800;
  font-size: 0.82rem;
}

.nav-cta i,
.button i,
.contact-link i {
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: rgba(6, 17, 22, 0.08);
  font-style: normal;
  transition: transform 700ms var(--ease), background 700ms var(--ease);
}

.magnetic:hover {
  transform: translateY(-2px) scale(1.015);
}

.magnetic:hover i {
  transform: translate3d(3px, -2px, 0) scale(1.05);
}

.magnetic:active {
  transform: scale(0.985);
}

.menu-toggle {
  display: none;
  width: 2.6rem;
  height: 2.6rem;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  color: var(--ink);
  position: relative;
}

.menu-toggle span {
  position: absolute;
  left: 0.75rem;
  right: 0.75rem;
  height: 1.5px;
  background: currentColor;
  transition: transform 600ms var(--ease);
}

.menu-toggle span:first-child {
  transform: translateY(-4px);
}

.menu-toggle span:last-child {
  transform: translateY(4px);
}

.menu-open .menu-toggle span:first-child {
  transform: rotate(45deg);
}

.menu-open .menu-toggle span:last-child {
  transform: rotate(-45deg);
}

.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 8;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1.2rem;
  padding: 7rem 2rem 2rem;
  background: rgba(3, 8, 11, 0.9);
  backdrop-filter: blur(28px);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-1rem);
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}

.mobile-menu a {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 14vw, 5rem);
  letter-spacing: -0.04em;
  line-height: 0.96;
  transform: translateY(1.5rem);
  opacity: 0;
  transition: opacity 800ms var(--ease), transform 800ms var(--ease);
}

.menu-open .mobile-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.menu-open .mobile-menu a {
  opacity: 1;
  transform: translateY(0);
}

.mobile-social {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1rem;
}

.mobile-social a {
  display: inline-flex;
  width: auto;
  padding: 0.8rem 1rem;
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  line-height: 1;
  text-transform: uppercase;
}

.section-shell {
  width: min(1180px, calc(100% - 3rem));
  margin: 0 auto;
}

.hero {
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.72fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5.5rem);
  padding: 9rem 0 5rem;
}

.eyebrow,
.section-kicker {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.17em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.48rem 0.75rem;
  border: 1px solid rgba(25,216,255,.2);
  border-radius: 999px;
  background: rgba(25,216,255,.06);
}

.eyebrow span {
  width: 0.46rem;
  height: 0.46rem;
  border-radius: 999px;
  background: var(--cyan);
  box-shadow: 0 0 24px var(--cyan);
  animation: pulse 2.6s var(--ease) infinite;
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  margin: 0;
  letter-spacing: -0.045em;
}

h1 {
  max-width: 820px;
  margin: 1.4rem 0 1.4rem;
  font-size: clamp(3.4rem, 8.2vw, 7.9rem);
  line-height: 0.86;
}

.title-cyan {
  color: var(--cyan);
  text-shadow: 0 0 34px rgba(25, 216, 255, 0.22);
}

.title-amber {
  color: var(--amber);
  text-shadow: 0 0 28px rgba(217, 180, 106, 0.2);
}

h2 {
  font-size: clamp(2.6rem, 5.2vw, 5.2rem);
  line-height: 0.92;
}

h3 {
  font-size: clamp(1.55rem, 2vw, 2.15rem);
  line-height: 1;
}

.hero-lede {
  max-width: 650px;
  margin: 0;
  color: var(--soft);
  font-size: clamp(1.05rem, 1.6vw, 1.32rem);
  line-height: 1.62;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.button {
  min-height: 3.45rem;
  padding: 0.55rem 0.58rem 0.55rem 1.3rem;
  font-weight: 800;
}

.button.primary {
  background: var(--cyan);
  color: #041117;
}

.button.secondary {
  border: 1px solid rgba(255,255,255,.14);
  background: rgba(255,255,255,.05);
  color: var(--ink);
}

.button.secondary i {
  background: rgba(255,255,255,.08);
}

.hero-visual {
  position: relative;
  min-height: 650px;
  perspective: 1200px;
}

.portrait-shell,
.program-card,
.cert-card {
  padding: 0.52rem;
  border: 1px solid rgba(255, 255, 255, 0.11);
  border-radius: 2rem;
  background: rgba(255,255,255,.045);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.12);
}

.portrait-card {
  position: relative;
  overflow: hidden;
  min-height: 610px;
  border-radius: 1.55rem;
  background:
    radial-gradient(circle at 50% 40%, rgba(25,216,255,.18), transparent 18rem),
    linear-gradient(160deg, rgba(255,255,255,.035), rgba(255,255,255,.01));
  transform-style: preserve-3d;
}

.portrait-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, transparent 46%, rgba(3,8,11,.62)),
    radial-gradient(circle at 52% 52%, transparent 28%, rgba(3,8,11,.36) 75%);
  pointer-events: none;
}

.portrait-card img {
  z-index: 2;
  width: 100%;
  height: 100%;
  min-height: 610px;
  max-width: 100%;
  object-fit: cover;
  object-position: center top;
  filter: saturate(0.95) contrast(1.02);
  transform: translate3d(0, 0, 40px);
  animation: portraitDrift 8s var(--ease) infinite;
}

.portrait-tag {
  position: absolute;
  left: 1.2rem;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 2;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  border: 1px solid rgba(255,255,255,.14);
  border-radius: 1.1rem;
  background: rgba(3,8,11,.68);
  backdrop-filter: blur(18px);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

.portrait-tag strong {
  color: var(--ink);
}

.floating-note {
  position: absolute;
  z-index: 3;
  max-width: 190px;
  padding: 0.95rem 1rem;
  border: 1px solid rgba(25,216,255,.24);
  border-radius: 1.2rem;
  background: rgba(8, 22, 29, 0.82);
  box-shadow: 0 24px 80px rgba(0,0,0,.28);
  animation: float 7s var(--ease) infinite;
}

.floating-note span {
  display: block;
  font-family: var(--font-display);
  font-size: 1.46rem;
  font-weight: 800;
}

.floating-note small {
  color: var(--muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.note-a {
  top: 7rem;
  left: -3rem;
}

.note-b {
  right: -2rem;
  top: 5rem;
  animation-delay: 900ms;
}

.note-c {
  left: -2.5rem;
  bottom: 7.5rem;
  animation-delay: 1400ms;
}

.note-d {
  right: -1.2rem;
  bottom: 4.2rem;
  animation-delay: 2200ms;
}

.ai-orbit {
  position: absolute;
  inset: 11%;
  z-index: 1;
  border-radius: 50%;
  border: 1px solid rgba(25,216,255,.12);
  animation: orbitSpin 24s linear infinite;
}

.ai-orbit span {
  position: absolute;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 22px rgba(25,216,255,.75);
}

.ai-orbit span:nth-child(1) { top: 7%; left: 50%; }
.ai-orbit span:nth-child(2) { right: 8%; top: 58%; }
.ai-orbit span:nth-child(3) { left: 12%; bottom: 20%; }

.shooting-stars {
  position: absolute;
  inset: 0;
  z-index: 3;
  pointer-events: none;
  overflow: hidden;
}

.shooting-stars span {
  position: absolute;
  width: 3px;
  height: 3px;
  border-radius: 999px;
  background: var(--cyan-2);
  box-shadow: 0 0 12px var(--cyan), -20px 10px 22px rgba(25,216,255,.16);
  opacity: 0;
  transform: translate3d(0, 0, 0) rotate(-24deg);
  animation: starTrace 4.8s var(--ease) infinite;
}

.shooting-stars span:nth-child(1) { top: 14%; left: 68%; animation-delay: 0s; }
.shooting-stars span:nth-child(2) { top: 30%; left: 20%; animation-delay: 1.1s; }
.shooting-stars span:nth-child(3) { top: 58%; left: 76%; animation-delay: 2.1s; }
.shooting-stars span:nth-child(4) { top: 68%; left: 28%; animation-delay: 3.2s; }
.shooting-stars span:nth-child(5) { top: 18%; left: 42%; animation-delay: 3.8s; }

.quick-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.9rem;
  margin-bottom: 6rem;
}

.quick-nav a {
  position: relative;
  overflow: hidden;
  display: flex;
  justify-content: space-between;
  min-height: 5.8rem;
  padding: 1.35rem;
  border: 1px solid rgba(255,255,255,.11);
  border-radius: 1.35rem;
  background:
    radial-gradient(circle at 80% 20%, rgba(25,216,255,.12), transparent 10rem),
    rgba(255,255,255,.04);
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 800;
  transition: transform 700ms var(--ease), background 700ms var(--ease), color 700ms var(--ease), border-color 700ms var(--ease);
}

.quick-nav a::before {
  content: "";
  position: absolute;
  inset: auto -30% -55% auto;
  width: 9rem;
  height: 9rem;
  border-radius: 999px;
  background: rgba(25,216,255,.14);
  transition: transform 900ms var(--ease), opacity 900ms var(--ease);
  opacity: 0.6;
}

.quick-nav a:hover {
  transform: translateY(-4px);
  border-color: rgba(25,216,255,.35);
  background:
    radial-gradient(circle at 72% 25%, rgba(25,216,255,.2), transparent 11rem),
    rgba(255,255,255,.055);
  color: var(--cyan-2);
}

.quick-nav a:hover::before {
  transform: translate3d(-38%, -28%, 0) scale(1.35);
  opacity: 1;
}

.quick-nav span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--muted);
}

.about,
.programs,
.courses,
.certificate,
.contact {
  padding: clamp(5rem, 10vw, 9rem) 0;
  border-top: 1px solid var(--line);
}

.about-grid {
  display: grid;
  grid-template-columns: 0.95fr 1fr;
  gap: clamp(2rem, 7vw, 6rem);
  margin-top: 1.4rem;
}

.about p,
.section-head p,
.certificate p,
.contact-panel p {
  color: var(--soft);
  font-size: 1.08rem;
  line-height: 1.72;
}

.about-copy p:first-child {
  margin-top: 0;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
  margin-top: 2rem;
}

.metrics div {
  min-height: 8.4rem;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 1.2rem;
  background: rgba(255,255,255,.04);
}

.metrics strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2.5rem;
  letter-spacing: -0.04em;
}

.metrics span {
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.brands {
  padding: 2rem 0 5rem;
}

.brand-marquee {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.2rem;
}

.brand-marquee span {
  padding: 0.72rem 1rem;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 999px;
  background: rgba(255,255,255,.04);
  color: var(--soft);
}

.section-head {
  display: grid;
  grid-template-columns: 1fr 0.8fr;
  gap: 2rem;
  align-items: end;
  margin-bottom: 3rem;
}

.section-head .section-kicker {
  grid-column: 1 / -1;
}

.section-head p {
  margin: 0;
}

.cards-grid {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 1rem;
}

.mentor-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: stretch;
}

.program-card {
  position: relative;
  border-radius: 1.8rem;
}

.detail-trigger {
  cursor: pointer;
  outline: none;
}

.detail-trigger::after {
  content: "Ver detalle";
  position: absolute;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 3;
  padding: 0.5rem 0.7rem;
  border: 1px solid rgba(25,216,255,.24);
  border-radius: 999px;
  background: rgba(3,8,11,.72);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(0.5rem);
  transition: opacity 650ms var(--ease), transform 650ms var(--ease);
}

.detail-trigger:hover::after,
.detail-trigger:focus-visible::after {
  opacity: 1;
  transform: translateY(0);
}

.program-card.featured {
  background: linear-gradient(135deg, rgba(25,216,255,.14), rgba(255,255,255,.035));
}

.program-card:nth-child(3),
.program-card:nth-child(5) {
  background: linear-gradient(135deg, rgba(124,92,255,.15), rgba(255,255,255,.035));
}

.program-card:nth-child(4),
.program-card:nth-child(6) {
  background: linear-gradient(135deg, rgba(0,229,160,.12), rgba(255,255,255,.035));
}

.card-inner {
  height: 100%;
  padding: clamp(1.35rem, 3vw, 2.2rem);
  border-radius: 1.34rem;
  background: rgba(5, 14, 19, 0.82);
}

.program-cover,
.course-cover {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(25,216,255,.16);
  background:
    radial-gradient(circle at 50% 0%, rgba(25,216,255,.16), transparent 70%),
    rgba(255,255,255,.035);
}

.program-cover {
  height: 190px;
  margin: 1.25rem 0 1.5rem;
  border-radius: 1.2rem;
}

.program-cover svg,
.course-cover svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: var(--cyan);
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.program-cover rect,
.program-cover circle,
.course-cover rect,
.course-cover circle {
  fill: rgba(25,216,255,.08);
}

.cover-grid {
  stroke: rgba(255,255,255,.08);
  stroke-width: 1.4;
}

.cover-line {
  stroke: rgba(247,251,255,.64);
  stroke-width: 4;
}

.cover-dot {
  fill: var(--cyan);
  filter: drop-shadow(0 0 14px rgba(25,216,255,.7));
}

.cover-branding svg,
.cover-ai-mentor svg {
  stroke: #7c5cff;
}

.cover-branding .cover-dot,
.cover-ai-mentor .cover-dot {
  fill: #8d73ff;
}

.cover-automation-mentor svg {
  stroke: #00e5a0;
}

.cover-automation-mentor .cover-dot {
  fill: #00e5a0;
}

.program-card:hover .program-cover svg,
.course-card:hover .course-cover svg {
  animation: coverDrift 4s var(--ease) infinite;
}

.card-top,
.price-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.card-top b {
  color: var(--cyan);
}

.program-card h3 {
  margin-top: 1.5rem;
}

.program-card p {
  color: var(--soft);
  line-height: 1.65;
}

.program-card ul {
  padding: 0;
  margin: 1.4rem 0 2rem;
  list-style: none;
  display: grid;
  gap: 0.7rem;
}

.program-card li {
  color: var(--soft);
}

.program-card li::before {
  content: "+";
  color: var(--cyan);
  margin-right: 0.65rem;
}

.price-row {
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
}

.price-row div {
  display: grid;
  gap: 0.25rem;
}

.price-row small {
  color: var(--muted);
}

.price-row strong {
  color: var(--ink);
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.8rem);
  letter-spacing: -0.03em;
  text-transform: none;
}

.price-row.compact {
  display: block;
}

.course-list {
  display: grid;
  gap: 1rem;
}

.course-card {
  position: relative;
  display: grid;
  grid-template-columns: 9.5rem 1fr minmax(220px, 0.32fr);
  gap: 1.5rem;
  padding: 1rem;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 1.5rem;
  background: rgba(255,255,255,.04);
  transition: transform 700ms var(--ease), border-color 700ms var(--ease), background 700ms var(--ease);
}

.course-card.detail-trigger::after {
  right: 1rem;
  bottom: 1rem;
}

.course-card:hover {
  transform: translateY(-3px);
  border-color: rgba(25,216,255,.32);
  background: rgba(25,216,255,.055);
}

.course-cover {
  min-height: 100%;
  border-radius: 1.15rem;
  display: grid;
  place-items: center;
}

.course-cover svg {
  width: 76%;
  height: 76%;
  stroke-width: 6;
}

.course-card h3 {
  margin: 0.25rem 0 0.75rem;
}

.course-card p {
  color: var(--soft);
  line-height: 1.65;
}

.learn-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.2rem;
}

.learn-grid span {
  padding: 0.55rem 0.72rem;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.86rem;
}

.course-card aside {
  display: grid;
  align-content: start;
  gap: 0.45rem;
  padding: 1rem;
  border-radius: 1.15rem;
  background: rgba(3,8,11,.42);
}

.course-card aside small {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.course-card aside strong {
  margin-bottom: 0.55rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.03em;
}

.certificate {
  display: grid;
  grid-template-columns: 0.95fr 1fr;
  gap: clamp(2rem, 8vw, 7rem);
  align-items: center;
}

.cert-card {
  padding: 1rem;
  transform: rotate(-1.5deg);
}

.cert-card > * {
  position: relative;
}

.cert-card {
  min-height: 360px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background:
    linear-gradient(135deg, rgba(25,216,255,.16), rgba(217,180,106,.12)),
    rgba(255,255,255,.04);
}

.seal {
  width: 7rem;
  height: 7rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(25,216,255,.35);
  border-radius: 50%;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.cert-card p,
.cert-card span {
  margin: 0;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.cert-card h3 {
  max-width: 560px;
}

.cert-line {
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent);
}

.contact {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  gap: 2rem;
  align-items: center;
  padding-bottom: 8rem;
}

.contact-panel {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 1.6rem;
  background: rgba(255,255,255,.04);
}

.contact-link {
  width: 100%;
  justify-content: space-between;
  padding: 1rem 1rem 1rem 1.25rem;
  background: var(--ink);
  color: #061116;
}

.instagram-link {
  margin-top: 0.75rem;
  background:
    radial-gradient(circle at 12% 100%, rgba(217,180,106,.38), transparent 42%),
    radial-gradient(circle at 90% 0%, rgba(25,216,255,.3), transparent 48%),
    #111d24;
  color: var(--ink);
  border: 1px solid rgba(255,255,255,.1);
}

.instagram-link span {
  color: var(--muted);
}

.instagram-link i {
  background: rgba(255,255,255,.08);
}

.contact-link span {
  color: rgba(6,17,22,.65);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.contact-link strong {
  font-family: var(--font-display);
  font-size: clamp(1.25rem, 2.5vw, 2rem);
  letter-spacing: -0.03em;
}

.contact-panel p {
  margin: 1rem 0 0;
  padding: 0 0.5rem 0.2rem;
}

.detail-modal {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 1.25rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 600ms var(--ease);
}

.detail-modal.is-open {
  opacity: 1;
  pointer-events: auto;
}

.detail-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(3, 8, 11, 0.68);
  backdrop-filter: blur(12px);
}

.detail-dialog {
  position: relative;
  width: min(1040px, 100%);
  max-height: min(86dvh, 820px);
  overflow: auto;
  padding: clamp(1.2rem, 3vw, 2rem);
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 1.7rem;
  background:
    radial-gradient(circle at 18% 0%, rgba(25,216,255,.15), transparent 18rem),
    radial-gradient(circle at 86% 12%, rgba(217,180,106,.08), transparent 16rem),
    rgba(5, 14, 19, 0.96);
  box-shadow: 0 32px 110px rgba(0,0,0,.58), inset 0 1px 0 rgba(255,255,255,.08);
  transform: translateY(1rem) scale(0.98);
  transition: transform 700ms var(--ease);
}

.detail-modal.is-open .detail-dialog {
  transform: translateY(0) scale(1);
}

.detail-close {
  position: sticky;
  top: 0;
  z-index: 3;
  float: right;
  width: 2.7rem;
  height: 2.7rem;
  border: 1px solid rgba(255,255,255,.13);
  border-radius: 50%;
  background: rgba(255,255,255,.06);
  color: var(--ink);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.detail-art {
  min-height: 150px;
  margin-bottom: 1.4rem;
  border: 1px solid rgba(25,216,255,.14);
  border-radius: 1.25rem;
  background:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px),
    radial-gradient(circle at 50% 12%, rgba(25,216,255,.2), transparent 60%);
  background-size: 34px 34px, 34px 34px, auto;
  display: grid;
  place-items: center;
  overflow: hidden;
}

.detail-art span {
  position: absolute;
  width: 4rem;
  height: 4rem;
  border: 1px solid rgba(25,216,255,.4);
  border-radius: 1.1rem;
  transform: rotate(45deg);
  animation: modalGlyph 7s var(--ease) infinite;
}

.detail-art span:nth-child(2) {
  width: 7rem;
  height: 7rem;
  border-radius: 50%;
  animation-delay: 700ms;
}

.detail-art span:nth-child(3) {
  width: 10rem;
  height: 10rem;
  border-color: rgba(217,180,106,.24);
  animation-delay: 1400ms;
}

.detail-type {
  margin: 0 0 0.7rem;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.detail-copy h2 {
  font-size: clamp(2.2rem, 5vw, 4.8rem);
  max-width: 880px;
}

#detail-summary {
  max-width: 780px;
  color: var(--soft);
  font-size: 1.05rem;
  line-height: 1.7;
}

.detail-meta,
.detail-prices,
.detail-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1rem;
}

.detail-meta span,
.detail-tools span {
  padding: 0.58rem 0.75rem;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.86rem;
}

.detail-prices div {
  min-width: 190px;
  padding: 1rem;
  border: 1px solid rgba(25,216,255,.16);
  border-radius: 1rem;
  background: rgba(255,255,255,.045);
}

.detail-prices small {
  display: block;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.detail-prices strong {
  display: block;
  margin-top: 0.28rem;
  font-family: var(--font-display);
  font-size: 1.45rem;
  letter-spacing: -0.03em;
}

.detail-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.4rem;
}

.detail-columns > div {
  padding: 1.2rem;
  border: 1px solid rgba(255,255,255,.1);
  border-radius: 1.15rem;
  background: rgba(255,255,255,.035);
}

.detail-columns h3 {
  margin-bottom: 1rem;
  font-size: 1.25rem;
}

.detail-columns ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.detail-columns li {
  color: var(--soft);
  line-height: 1.45;
}

.detail-columns li::before {
  content: "✓";
  display: inline-grid;
  place-items: center;
  width: 1.25rem;
  height: 1.25rem;
  margin-right: 0.55rem;
  border-radius: 50%;
  background: rgba(25,216,255,.16);
  color: var(--cyan);
  font-size: 0.78rem;
}

.detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.5rem;
}

body.modal-open {
  overflow: hidden;
}

.footer {
  width: min(1180px, calc(100% - 3rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.footer img {
  width: 132px;
}

.reveal {
  opacity: 0;
  transform: translateY(3.5rem);
  filter: blur(10px);
  transition: opacity 1000ms var(--ease), transform 1000ms var(--ease), filter 1000ms var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.35); }
}

@keyframes float {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -0.75rem, 0); }
}

@keyframes portraitDrift {
  0%, 100% { transform: translate3d(0, 0, 40px) scale(1); }
  50% { transform: translate3d(0, -0.45rem, 40px) scale(1.012); }
}

@keyframes orbitSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes starTrace {
  0% { opacity: 0; transform: translate3d(0, 0, 0) rotate(-24deg) scale(.7); }
  18% { opacity: 0.9; }
  42% { opacity: 0; transform: translate3d(-54px, 28px, 0) rotate(-24deg) scale(1); }
  100% { opacity: 0; transform: translate3d(-54px, 28px, 0) rotate(-24deg) scale(1); }
}

@keyframes coverDrift {
  0%, 100% { transform: translate3d(0, 0, 0); }
  50% { transform: translate3d(0, -4px, 0); }
}

@keyframes modalGlyph {
  0%, 100% { opacity: 0.24; transform: rotate(45deg) scale(0.92); }
  50% { opacity: 0.7; transform: rotate(58deg) scale(1.05); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
    transition-duration: 1ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
    filter: none;
  }
}

@media (max-width: 980px) {
  .desktop-nav,
  .social-actions {
    display: none;
  }

  .site-header {
    grid-template-columns: auto auto;
    justify-content: space-between;
  }

  .menu-toggle {
    display: block;
  }

  .section-shell,
  .footer {
    width: min(100% - 1.25rem, 720px);
  }

  .hero,
  .about-grid,
  .section-head,
  .cards-grid,
  .mentor-grid,
  .certificate,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 8rem;
  }

  .hero-visual {
    min-height: auto;
  }

  .portrait-card {
    min-height: 540px;
  }

  .portrait-card img {
    min-height: 540px;
    max-width: 100%;
  }

  .note-a {
    left: 0.5rem;
  }

  .note-b {
    right: 0.5rem;
  }

  .note-c {
    left: 0.5rem;
  }

  .note-d {
    right: 0.5rem;
  }

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

  .course-card {
    grid-template-columns: 1fr;
  }

  .detail-columns {
    grid-template-columns: 1fr;
  }

  .course-cover {
    min-height: 180px;
  }

  .footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 620px) {
  .brand img {
    width: 128px;
  }

  h1 {
    font-size: clamp(3rem, 17vw, 4.7rem);
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .button {
    justify-content: space-between;
  }

  .quick-nav {
    grid-template-columns: 1fr;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .portrait-card {
    min-height: 470px;
  }

  .portrait-card img {
    min-height: 470px;
  }

  .floating-note {
    position: relative;
    inset: auto;
    display: inline-block;
    margin: 0.75rem 0.5rem 0 0;
  }

  .portrait-tag,
  .card-top,
  .price-row,
  .detail-actions {
    flex-direction: column;
  }

  .detail-modal {
    padding: 0.6rem;
  }

  .detail-dialog {
    max-height: 90dvh;
    border-radius: 1.2rem;
  }
}