:root {
  --dark: #1c1c1c;
  --dark-2: #232a35;
  --blue: #3399ff;
  --blue-deep: #3366ff;
  --blue-soft: #a5d2ff;
  --bg: #ffffff;
  --bg-soft: #f5f8fc;
  --text: #1c1c1c;
  --muted: #5b6573;
  --line: #e3e9f1;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow: 0 6px 24px rgba(20, 40, 80, .07);
  --shadow-hover: 0 14px 40px rgba(20, 40, 80, .13);
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body {
  margin: 0;
  font-family: "Montserrat", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--blue-deep); text-decoration: none; transition: color .2s; }
a:hover { color: var(--blue); }
h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.25; font-weight: 700; }
h2 { font-size: clamp(26px, 3.2vw, 36px); letter-spacing: -.01em; }
h3 { font-size: 18px; }
p { margin: 0 0 1em; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.section { padding: 96px 0; }
.section--tight { padding: 64px 0; }
.section--soft { background: var(--bg-soft); }
.center { text-align: center; }
.muted { color: var(--muted); font-size: 15px; max-width: 900px; margin: 40px auto 0; }

.eyebrow {
  display: inline-block;
  margin-bottom: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--blue);
}
.eyebrow--light { color: var(--blue-soft); }

.section-head { max-width: 760px; margin: 0 auto 56px; text-align: center; }
.section-head p { color: var(--muted); }
.section-head--light, .section-head--light h2 { color: #fff; }
.section-head--row { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; max-width: none; text-align: left; }
.section-head--row p { margin: 0; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600; font-size: 15px;
  border: 1.5px solid transparent;
  transition: background .2s, color .2s, border-color .2s, transform .2s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn--sm { padding: 10px 22px; font-size: 14px; }
.btn--primary { background: var(--blue); color: #fff; box-shadow: 0 8px 20px rgba(51, 153, 255, .3); }
.btn--primary:hover { background: var(--blue-deep); color: #fff; }
.btn--ghost { border-color: rgba(255, 255, 255, .55); color: #fff; }
.btn--ghost:hover { background: #fff; color: var(--dark); }
.btn--outline { border-color: var(--blue); color: var(--blue-deep); }
.btn--outline:hover { background: var(--blue); color: #fff; }
.btn--light { background: #fff; color: var(--blue-deep); }
.btn--light:hover { color: var(--dark); box-shadow: 0 10px 24px rgba(0, 0, 0, .15); }

.link-arrow { font-weight: 600; font-size: 15px; color: var(--blue-deep); }
.link-arrow::after { content: " →"; transition: margin .2s; }
a:hover .link-arrow::after, .link-arrow:hover::after { margin-left: 4px; }

/* Header */
.header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(28, 28, 28, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.header__inner { display: flex; align-items: center; gap: 32px; height: 76px; }
.header__brand { display: flex; align-items: center; gap: 12px; color: #fff; font-size: 12px; font-weight: 600; line-height: 1.35; }
.header__brand:hover { color: #fff; }
.header__brand img { width: 52px; height: 52px; }
.nav { display: flex; gap: 28px; margin-left: auto; }
.nav a { color: rgba(255, 255, 255, .78); font-size: 14px; font-weight: 500; }
.nav a:hover { color: #fff; }
.burger { display: none; background: none; border: 0; padding: 8px; cursor: pointer; margin-left: auto; }
.burger span { display: block; width: 24px; height: 2px; background: #fff; margin: 5px 0; border-radius: 2px; transition: transform .25s, opacity .25s; }
.burger[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.burger[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Hero */
.hero {
  position: relative;
  min-height: min(86vh, 760px);
  display: flex; align-items: center;
  color: #fff;
  background:
    linear-gradient(100deg, rgba(14, 20, 32, .88) 0%, rgba(14, 20, 32, .6) 50%, rgba(14, 20, 32, .25) 100%),
    url("../img/hero.jpeg") center / cover no-repeat;
}
.hero__inner { padding-top: 80px; padding-bottom: 80px; }
.hero__content { max-width: 720px; }
.hero h1 { font-size: clamp(30px, 4.6vw, 54px); font-weight: 800; letter-spacing: -.02em; margin-bottom: 24px; }
.hero h1 span { color: var(--blue); }
.hero__address { display: flex; align-items: center; gap: 8px; color: rgba(255, 255, 255, .8); font-size: 15px; margin-bottom: 36px; }
.hero__address svg { width: 18px; height: 18px; fill: var(--blue); flex: none; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Mission / Vision */
.lead-title { text-align: center; font-size: clamp(18px, 2vw, 22px); font-weight: 600; max-width: 820px; margin: 0 auto 40px; }
.mv { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.mv__card {
  display: flex; gap: 24px; align-items: flex-start;
  padding: 36px;
  border-radius: var(--radius-lg);
  background: var(--bg-soft);
  border: 1px solid var(--line);
}
.mv__card img { width: 72px; height: 72px; flex: none; }
.mv__card h3 { font-size: 20px; }
.mv__card p { margin: 0; color: var(--muted); }
.mv__card--dark { background: var(--dark); border-color: var(--dark); color: #fff; }
.mv__card--dark p { color: rgba(255, 255, 255, .75); }

/* About */
.about { display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px; align-items: center; }
.about__text p { color: var(--muted); }
.about__text strong { color: var(--text); }
.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.stat {
  background: #fff;
  border-radius: var(--radius);
  padding: 32px 24px;
  box-shadow: var(--shadow);
  text-align: center;
}
.stat b { display: block; font-size: 44px; font-weight: 800; color: var(--blue-deep); line-height: 1.1; }
.stat:not(:first-child) b::after { content: "+"; }
.stat span { color: var(--muted); font-size: 14px; font-weight: 500; text-transform: uppercase; letter-spacing: .08em; }

/* Goals */
.goals { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.goal {
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  transition: box-shadow .25s, transform .25s, border-color .25s;
}
.goal:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: transparent; }
.goal__num { display: inline-block; font-size: 14px; font-weight: 800; color: var(--blue); margin-bottom: 14px; padding: 6px 12px; background: rgba(51, 153, 255, .1); border-radius: 999px; }
.goal p { margin: 0; }
.goal--accent {
  display: flex; flex-direction: column; justify-content: center; gap: 16px;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-deep) 100%);
  border: 0; color: #fff; font-weight: 600;
}
.goal--accent img { width: 56px; height: auto; filter: brightness(0) invert(1); }

/* Certification */
.cert {
  color: #fff;
  background:
    linear-gradient(rgba(16, 24, 40, .86), rgba(16, 24, 40, .9)),
    url("../img/bg-cert.jpg") center / cover no-repeat;
}
.levels { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.level {
  display: flex; flex-direction: column;
  background: rgba(255, 255, 255, .06);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius);
  overflow: hidden;
  backdrop-filter: blur(6px);
  transition: transform .25s, border-color .25s;
}
.level:hover { transform: translateY(-4px); border-color: var(--blue); }
.level header { padding: 24px; background: var(--blue); border-radius: 0 40px 0 0; }
.level--top header { background: var(--blue-deep); }
.level header small { font-size: 12px; font-weight: 700; letter-spacing: .14em; opacity: .85; }
.level header h3 { font-size: 22px; margin: 2px 0 0; }
.level dl { margin: 0; padding: 24px; flex: 1; }
.level dt { font-size: 12px; text-transform: uppercase; letter-spacing: .1em; color: var(--blue-soft); font-weight: 600; }
.level dd { margin: 4px 0 18px; font-size: 14px; color: rgba(255, 255, 255, .88); }
.level dd:last-child { margin-bottom: 0; }
.cert__note { text-align: center; margin: 40px 0 0; color: rgba(255, 255, 255, .75); }
.cert__note a { color: var(--blue-soft); font-weight: 600; }

/* Training */
.training { display: grid; grid-template-columns: 500px 1fr; gap: 64px; align-items: center; }
.training__media img { width: 100%; border-radius: var(--radius); box-shadow: var(--shadow-hover); }
.training__text p { color: var(--muted); }
.training__text strong { color: var(--text); }
.training__text .btn { margin-top: 12px; }

/* Partners */
.partners { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.partner {
  display: flex; flex-direction: column;
  background: #fff;
  padding: 36px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  border-top: 4px solid var(--blue);
}
.partner h3 { font-size: 22px; }
.partner p { color: var(--muted); font-size: 15px; }
.partner .link-arrow { margin-top: auto; }

/* Courses */
.courses { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.course {
  display: flex; flex-direction: column;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: box-shadow .25s, transform .25s;
}
.course:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.course__img { display: block; aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-soft); }
.course__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.course:hover .course__img img { transform: scale(1.05); }
.course__body { display: flex; flex-direction: column; flex: 1; padding: 22px; }
.course__badges { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.badge { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: rgba(51, 153, 255, .1); color: var(--blue-deep); }
.badge--yellow { background: #fff3c4; color: #8a6100; }
.course h3 { font-size: 16px; margin-bottom: 8px; }
.course h3 a { color: var(--text); }
.course h3 a:hover { color: var(--blue-deep); }
.course__meta { font-size: 14px; color: var(--muted); margin-bottom: 12px; }
.course__date { display: flex; gap: 8px; font-size: 14px; font-weight: 600; margin-bottom: 4px; }
.course__date svg { width: 18px; height: 18px; flex: none; fill: none; stroke: var(--blue); stroke-width: 2; margin-top: 2px; }
.course__date .is-done { color: var(--muted); font-weight: 500; text-decoration: line-through; }
.course__price { font-size: 14px; color: var(--muted); margin-bottom: 18px; }
.course .btn { margin-top: auto; }
.course.is-ended .course__img img { filter: grayscale(.6); }

/* Join */
.join { background: linear-gradient(120deg, var(--blue-deep), var(--blue)); color: #fff; padding: 72px 0; }
.join__inner { display: grid; grid-template-columns: auto 1fr auto; gap: 48px; align-items: center; }
.join__logo { width: 120px; height: 120px; }
.join p { margin: 0; color: rgba(255, 255, 255, .88); max-width: 680px; }

/* Events */
.events { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.event {
  display: flex; flex-direction: column;
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  border: 1px solid var(--line);
  color: var(--text);
  transition: box-shadow .25s, transform .25s;
}
.event:hover { color: var(--text); box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.event__img { aspect-ratio: 3 / 2; overflow: hidden; background: var(--bg-soft); }
.event__img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.event:hover .event__img img { transform: scale(1.05); }
.event__body { padding: 20px 22px 24px; }
.event__meta { display: flex; gap: 12px; font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.event__meta time { font-weight: 700; color: var(--blue-deep); }
.event h3 { font-size: 16px; margin: 0; }

/* Affiliations */
.affiliations-wrap { border-top: 1px solid var(--line); }
.affiliations { display: flex; justify-content: center; align-items: center; gap: 72px; flex-wrap: wrap; }
.affiliations img { height: 110px; width: auto; object-fit: contain; mix-blend-mode: multiply; filter: grayscale(1); opacity: .75; transition: filter .25s, opacity .25s; }
.affiliations img:hover { filter: none; opacity: 1; }

/* Footer */
.footer { background: var(--dark); color: rgba(255, 255, 255, .72); padding: 72px 0 0; font-size: 15px; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer__brand img { width: 88px; height: 88px; margin-bottom: 16px; }
.footer__brand p { max-width: 380px; }
.footer h4 { color: #fff; font-size: 15px; text-transform: uppercase; letter-spacing: .1em; margin-bottom: 20px; }
.footer__list { list-style: none; margin: 0; padding: 0; }
.footer__list li { margin-bottom: 12px; }
.footer a { color: rgba(255, 255, 255, .85); }
.footer a:hover { color: var(--blue); }
.socials { display: flex; gap: 12px; }
.socials a {
  display: grid; place-items: center;
  width: 44px; height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .08);
  transition: background .2s;
}
.socials a:hover { background: var(--blue); }
.socials svg { width: 20px; height: 20px; fill: #fff; }
.footer__bottom {
  display: flex; justify-content: space-between;
  padding-top: 24px; padding-bottom: 24px;
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 13px;
}

/* Reveal */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; }
  * { transition: none !important; }
}

/* Responsive */
@media (max-width: 1100px) {
  .levels, .events, .courses { grid-template-columns: repeat(2, 1fr); }
  .training { grid-template-columns: 400px 1fr; gap: 48px; }
}
@media (max-width: 960px) {
  .section { padding: 72px 0; }
  .header__cta { display: none; }
  .burger { display: block; }
  .nav {
    position: absolute; top: 76px; left: 0; right: 0;
    flex-direction: column; gap: 0;
    background: var(--dark);
    padding: 8px 24px 20px;
    transform: translateY(-8px); opacity: 0; pointer-events: none;
    transition: opacity .25s, transform .25s;
  }
  .nav.is-open { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { padding: 14px 0; border-bottom: 1px solid rgba(255, 255, 255, .08); font-size: 16px; }
  .about, .training { grid-template-columns: 1fr; gap: 40px; }
  .training__media { max-width: 440px; margin: 0 auto; }
  .goals { grid-template-columns: repeat(2, 1fr); }
  .join__inner { grid-template-columns: 1fr; text-align: center; gap: 24px; justify-items: center; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 640px) {
  .container { padding: 0 16px; }
  .section { padding: 56px 0; }
  .section--tight { padding: 48px 0; }
  .section-head { margin-bottom: 36px; }
  .header__brand span { display: none; }
  .mv, .goals, .courses, .levels, .events, .partners { grid-template-columns: 1fr; }
  .mv__card { flex-direction: column; padding: 28px; }
  .partner { padding: 28px; }
  .hero__actions .btn { flex: 1 1 auto; }
  .stat b { font-size: 36px; }
  .affiliations { gap: 32px; }
  .affiliations img { height: 72px; }
  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom { flex-direction: column; gap: 8px; }
  .section-head--row { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
  .hero__address { align-items: flex-start; font-size: 14px; }
  .hero__address svg { margin-top: 2px; }
  .training__media { max-width: 300px; }
}