:root {
  --blue: #00aeef;
  --dark: #0c1b23;
  --white: #ffffff;
  --soft: #f5f8fa;
  --ink: #14242c;
  --muted: #60717a;
  --line: rgba(12, 27, 35, 0.12);
  --blue-soft: rgba(0, 174, 239, 0.12);
  --shadow: 0 18px 55px rgba(12, 27, 35, 0.12);
  --radius: 16px;
  --font-heading: "Manrope", "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
:focus-visible { outline: 3px solid rgba(0, 174, 239, 0.55); outline-offset: 3px; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--blue);
  color: var(--dark);
  border-radius: 999px;
  font-weight: 800;
}
.skip-link:focus { top: 1rem; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.shell { width: min(1140px, calc(100% - 40px)); margin-inline: auto; }
.section { padding: 96px 0; }
.section-soft { background: var(--soft); }
.section-dark {
  color: var(--white);
  background:
    radial-gradient(circle at 12% 18%, rgba(0, 174, 239, 0.22), transparent 34%),
    linear-gradient(135deg, #0c1b23 0%, #102a36 100%);
}
.section-grid {
  position: relative;
  overflow: hidden;
}
.section-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(0, 174, 239, 0.09) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 174, 239, 0.09) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9), transparent 88%);
}
.section-grid > * { position: relative; z-index: 1; }

h1, h2, h3 {
  font-family: var(--font-heading);
  line-height: 1.08;
  color: var(--dark);
  letter-spacing: 0;
  margin: 0;
}
.section-dark h1, .section-dark h2, .section-dark h3, .footer h3 { color: var(--white); }
h1 { font-size: clamp(2.7rem, 6vw, 5.7rem); max-width: 830px; }
h2 { font-size: clamp(2rem, 4vw, 3.25rem); max-width: 760px; }
h3 { font-size: 1.15rem; }
p { margin: 0; color: var(--muted); }
.section-dark p, .footer p { color: rgba(255,255,255,0.78); }
.eyebrow {
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.9rem;
}
.section-heading { max-width: 760px; margin-bottom: 42px; }
.section-heading p:not(.eyebrow) { margin-top: 14px; font-size: 1.08rem; }
.section-heading--dark p:not(.eyebrow) { color: rgba(255,255,255,0.78); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(12, 27, 35, 0.94);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.nav {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand__logo {
  width: 160px;
  height: 52px;
  object-fit: contain;
}
.brand__fallback {
  display: none;
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.05;
  max-width: 220px;
}
.brand__logo:not([src]), .brand__logo.is-missing { display: none; }
.brand.logo-loaded .brand__fallback { display: none; }
.brand__fallback.is-visible { display: block; }
.nav-menu { display: flex; align-items: center; gap: 18px; }
.nav-menu a:not(.btn) {
  color: rgba(255,255,255,0.82);
  font-size: 0.91rem;
  font-weight: 700;
}
.nav-menu a:hover { color: var(--white); }
.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.06);
  border-radius: 12px;
  padding: 10px;
}
.nav-toggle span:not(.sr-only) {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: var(--white);
  border-radius: 999px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease, background 180ms ease;
  cursor: pointer;
  text-align: center;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  color: var(--dark);
  background: var(--blue);
  box-shadow: 0 12px 32px rgba(0,174,239,0.32);
}
.btn--secondary {
  color: var(--white);
  border-color: rgba(255,255,255,0.24);
  background: rgba(255,255,255,0.08);
}
.btn--ghost {
  color: var(--white);
  border-color: rgba(0,174,239,0.55);
  background: rgba(0,174,239,0.08);
}
.btn--small { min-height: 42px; padding: 0.65rem 1rem; font-size: 0.9rem; }
.button-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.button-row--center { justify-content: center; }

.hero { padding: 114px 0 104px; min-height: 720px; display: grid; align-items: center; }
.hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(320px, 0.85fr);
  align-items: center;
  gap: 56px;
}
.hero__lead { max-width: 720px; font-size: 1.2rem; margin-top: 22px; }
.hero__visual { display: grid; place-items: center; }
.hero-card {
  position: relative;
  width: min(100%, 440px);
  aspect-ratio: 1 / 1;
  display: grid;
  place-items: center;
  padding: 38px;
  border: 1px solid rgba(0,174,239,0.28);
  border-radius: 18px;
  background:
    linear-gradient(145deg, rgba(255,255,255,0.11), rgba(255,255,255,0.035)),
    radial-gradient(circle at 50% 40%, rgba(0,174,239,0.23), transparent 55%);
  box-shadow: 0 30px 90px rgba(0,0,0,0.34), inset 0 0 0 1px rgba(255,255,255,0.06);
  overflow: hidden;
}
.hero-card::before {
  content: "";
  position: absolute;
  inset: 16px;
  border: 1px solid rgba(0,174,239,0.18);
  border-radius: 14px;
  background-image:
    linear-gradient(rgba(0,174,239,0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,174,239,0.13) 1px, transparent 1px);
  background-size: 34px 34px;
}
.hero-card__scan {
  position: absolute;
  left: 0;
  right: 0;
  top: 22%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--blue), transparent);
  box-shadow: 0 0 22px var(--blue);
  opacity: 0.75;
}
.hero-card img {
  position: relative;
  z-index: 1;
  max-width: 82%;
  max-height: 62%;
  object-fit: contain;
}
.hero-card__fallback {
  display: none;
  position: relative;
  z-index: 1;
  text-align: center;
  border: 1px dashed rgba(0,174,239,0.65);
  border-radius: 16px;
  padding: 26px;
  color: var(--white);
}
.hero-card__fallback span { display: block; color: var(--blue); font-weight: 800; font-size: 0.82rem; text-transform: uppercase; margin-bottom: 8px; }
.hero-card__fallback strong { font-family: var(--font-heading); font-size: 1.55rem; line-height: 1.1; }
.hero-card__fallback.is-visible { display: block; }
.hero-card.logo-loaded .hero-card__fallback { display: none; }
.hero-card img:not([src]) { display: none; }

.value-grid, .offer-grid, .course-grid, .live-grid, .benefit-grid, .testimonial-grid {
  display: grid;
  gap: 22px;
}
.value-grid, .offer-grid { grid-template-columns: repeat(4, 1fr); }
.course-grid { grid-template-columns: repeat(3, 1fr); align-items: stretch; }
.live-grid, .testimonial-grid { grid-template-columns: repeat(3, 1fr); }
.benefit-grid { grid-template-columns: repeat(6, 1fr); }

.feature-card, .offer-card, .course-card, .live-card, .benefit-grid article, .testimonial, .service-grid article, .form-card, .mentor-card, .live-highlight, .bundle-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: 0 14px 36px rgba(12, 27, 35, 0.06);
}
.feature-card, .offer-card, .benefit-grid article, .service-grid article {
  padding: 24px;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.feature-card:hover, .offer-card:hover, .course-card:hover, .live-card:hover, .benefit-grid article:hover {
  transform: translateY(-4px);
  border-color: rgba(0,174,239,0.38);
  box-shadow: var(--shadow);
}
.feature-card h3, .offer-card h3 { margin: 16px 0 10px; }

[data-icon] {
  width: 42px;
  height: 42px;
  display: inline-grid;
  place-items: center;
  color: var(--blue);
  border: 1px solid rgba(0,174,239,0.28);
  border-radius: 12px;
  background: var(--blue-soft);
}
[data-icon] svg { width: 22px; height: 22px; stroke-width: 2; }

.mentor-card {
  margin-top: 24px;
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr 220px;
  gap: 28px;
  align-items: center;
  background: linear-gradient(135deg, #ffffff, #f8fcff);
}
.mentor-card p { margin-top: 8px; }
.mentor-card__photo, .avatar, .course-image {
  display: grid;
  place-items: center;
  color: var(--muted);
  font-weight: 800;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(0,174,239,0.12), rgba(12,27,35,0.06)),
    linear-gradient(rgba(12,27,35,0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(12,27,35,0.06) 1px, transparent 1px);
  background-size: auto, 22px 22px, 22px 22px;
  border: 1px dashed rgba(0,174,239,0.42);
}
.mentor-card__photo { min-height: 220px; border-radius: 16px; }

.course-card, .live-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}
.course-image {
  aspect-ratio: 16 / 9;
  border-width: 0 0 1px;
  border-radius: 0;
  padding: 20px;
  font-size: 0.9rem;
}
.course-body { padding: 24px; display: flex; flex: 1; flex-direction: column; }
.course-body p { margin-top: 10px; }
.meta-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0; }
.pill {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: var(--blue-soft);
  color: #006f99;
  font-size: 0.78rem;
  font-weight: 800;
}
.topic-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  padding: 0;
  margin: 0 0 22px;
  list-style: none;
}
.topic-list li {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.24rem 0.55rem;
  font-size: 0.78rem;
  color: var(--muted);
  background: #fff;
}
.course-card .btn, .live-card .btn { margin-top: auto; width: 100%; }

.bundle-section { background: linear-gradient(180deg, var(--white), var(--soft)); }
.bundle-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
  padding: 34px;
  border-color: rgba(0,174,239,0.35);
  background:
    radial-gradient(circle at 90% 20%, rgba(0,174,239,0.12), transparent 30%),
    #ffffff;
}
.bundle-card h3 { margin-top: 22px; }
.check-list { padding-left: 0; margin: 18px 0 0; list-style: none; }
.check-list li { margin: 8px 0; color: var(--muted); }
.check-list li::before { content: "✓"; color: var(--blue); font-weight: 900; margin-right: 8px; }

.live-highlight {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  align-items: center;
  padding: 28px;
  margin-bottom: 24px;
  color: var(--white);
  background: linear-gradient(135deg, rgba(0,174,239,0.16), rgba(255,255,255,0.06));
  border-color: rgba(0,174,239,0.32);
}
.live-card { background: rgba(255,255,255,0.98); }
.live-card .course-body p { color: var(--muted); }
.live-meta {
  display: grid;
  gap: 8px;
  margin: 16px 0 22px;
  color: var(--muted);
  font-size: 0.92rem;
}
.live-meta strong { color: var(--dark); }

.benefit-grid article {
  min-height: 146px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.benefit-grid h3 { font-size: 1rem; }

.journey {
  position: relative;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.journey li {
  position: relative;
  padding: 22px 18px;
  min-height: 154px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--white);
  font-weight: 800;
  color: var(--dark);
}
.journey span { display: block; color: var(--blue); font-size: 1.6rem; margin-bottom: 14px; font-family: var(--font-heading); }

.corporate__grid, .contact__grid, .faq-layout {
  display: grid;
  grid-template-columns: 0.92fr 1.08fr;
  gap: 44px;
  align-items: start;
}
.corporate h2, .contact h2 { margin-bottom: 18px; }
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 28px;
}
.service-grid h3 { margin: 14px 0 8px; font-size: 1rem; }
.form-card { padding: 26px; }
.form-note { margin: 8px 0 18px; font-size: 0.9rem; }
.form-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
label { display: grid; gap: 7px; margin-bottom: 14px; color: var(--dark); font-weight: 800; font-size: 0.9rem; }
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 0.95rem;
  color: var(--dark);
  background: var(--white);
}
textarea { resize: vertical; }
.form-status { min-height: 1.4em; margin-top: 12px; color: #087a35; font-weight: 700; }

.testimonial { padding: 24px; }
.testimonial p { margin: 18px 0; }
.testimonial h3 { margin-bottom: 4px; }
.testimonial span { color: var(--muted); }
.avatar { width: 70px; height: 70px; border-radius: 50%; font-size: 0.72rem; }

.faq details {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--white);
  margin-bottom: 12px;
  overflow: hidden;
}
.faq summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 900;
  color: var(--dark);
  list-style: none;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--blue); font-size: 1.25rem; }
.faq details[open] summary::after { content: "–"; }
.faq details p { padding: 0 20px 18px; }

.contact-list {
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.contact-list li {
  padding: 14px 16px;
  border-left: 3px solid var(--blue);
  background: var(--soft);
  border-radius: 12px;
}

.final-cta { text-align: center; padding: 82px 0; }
.final-cta h2 { margin-inline: auto; }
.final-cta p { margin-top: 14px; font-size: 1.12rem; }

.footer {
  padding: 58px 0 24px;
  color: var(--white);
  background: var(--dark);
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 34px;
}
.brand--footer { margin-bottom: 16px; }
.footer h3 { font-size: 1rem; margin-bottom: 14px; }
.footer a, .footer span {
  display: block;
  color: rgba(255,255,255,0.72);
  margin: 8px 0;
}
.footer a:hover { color: var(--blue); }
.footer__bottom {
  padding-top: 28px;
  margin-top: 34px;
  border-top: 1px solid rgba(255,255,255,0.1);
  color: rgba(255,255,255,0.68);
}

.floating-cta {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 40;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  color: var(--dark);
  background: var(--blue);
  font-weight: 900;
  box-shadow: 0 18px 46px rgba(0,174,239,0.42);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1024px) {
  .value-grid, .offer-grid, .course-grid, .live-grid, .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .benefit-grid, .journey { grid-template-columns: repeat(3, 1fr); }
  .hero__grid, .corporate__grid, .contact__grid, .faq-layout { grid-template-columns: 1fr; }
  .hero { min-height: auto; padding-top: 92px; }
}

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .nav-menu {
    position: absolute;
    left: 20px;
    right: 20px;
    top: calc(100% + 10px);
    display: grid;
    gap: 0;
    padding: 10px;
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 16px;
    background: rgba(12, 27, 35, 0.98);
    box-shadow: var(--shadow);
    transform-origin: top;
    opacity: 0;
    transform: scaleY(0.96);
    pointer-events: none;
    transition: opacity 160ms ease, transform 160ms ease;
  }
  .nav-menu.is-open { opacity: 1; transform: scaleY(1); pointer-events: auto; }
  .nav-menu a { padding: 12px; border-radius: 10px; }
  .nav-menu .btn { margin-top: 6px; }
  .brand__logo { width: 132px; }
  .section { padding: 72px 0; }
  .hero { padding: 78px 0 74px; }
  .button-row .btn { width: 100%; }
  .bundle-card, .live-highlight, .mentor-card { grid-template-columns: 1fr; }
  .bundle-card .btn, .live-highlight .btn { width: 100%; }
  .service-grid { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .shell { width: min(100% - 28px, 1140px); }
  h1 { font-size: 2.55rem; }
  h2 { font-size: 2rem; }
  .value-grid, .offer-grid, .course-grid, .live-grid, .benefit-grid, .testimonial-grid, .journey, .form-grid { grid-template-columns: 1fr; }
  .hero-card { width: 100%; padding: 28px; }
  .course-body, .form-card, .feature-card, .offer-card, .testimonial, .bundle-card, .live-highlight { padding: 22px; }
  .floating-cta {
    left: 14px;
    right: 14px;
    bottom: 14px;
    min-height: 54px;
  }
  .footer { padding-bottom: 88px; }
  .footer__grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}