:root {
  --teal: #12b3a8;
  --teal-dark: #0b8a82;
  --blue: #1e7fd9;
  --green: #4cc38a;
  --ink: #12323a;
  --muted: #5b7378;
  --bg: #ffffff;
  --tint: #eefaf8;
  --line: #d9ecea;
  --radius: 18px;
  --shadow: 0 10px 30px rgba(18, 50, 58, .08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  font-family: "Be Vietnam Pro", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.container { width: min(1140px, 100% - 32px); margin-inline: auto; }

/* Buttons */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: #fff;
  font-weight: 600;
  text-decoration: none;
  padding: 12px 24px;
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  box-shadow: 0 6px 18px rgba(30, 127, 217, .25);
  transition: transform .15s;
}
.btn:hover { transform: translateY(-2px); }
.btn--small { padding: 8px 18px; font-size: .9rem; }
.btn--ghost { background: #fff; color: var(--teal-dark); box-shadow: inset 0 0 0 2px var(--teal); }
.btn--full { width: 100%; }

/* Header */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.topbar__inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand__logo { width: 44px; height: 44px; object-fit: contain; }
.brand__mark {
  display: grid; place-items: center;
  width: 44px; height: 44px; border-radius: 12px;
  background: linear-gradient(135deg, var(--teal), var(--blue));
  color: #fff; font-weight: 800; font-size: .85rem;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__text strong { font-size: 1.1rem; color: var(--teal-dark); }
.brand__text small { font-size: .7rem; color: var(--muted); letter-spacing: .1em; text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a:not(.btn) { text-decoration: none; font-weight: 500; font-size: .95rem; }
.nav a:not(.btn):hover { color: var(--teal-dark); }
.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--ink); margin: 5px 0; border-radius: 2px; }

/* Hero */
.hero {
  position: relative; overflow: hidden;
  background: linear-gradient(135deg, #13b5a6 0%, #19a3c4 55%, #1e7fd9 100%);
  color: #fff;
  padding: 72px 0 88px;
}
.hero__blob { position: absolute; border-radius: 50%; filter: blur(2px); opacity: .35; }
.hero__blob--1 { width: 420px; height: 420px; background: var(--green); top: -160px; left: -120px; }
.hero__blob--2 { width: 360px; height: 360px; background: #0f5fb8; bottom: -180px; right: -80px; }
.hero__inner { position: relative; display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; font-weight: 700; color: var(--teal-dark); }
.hero .eyebrow { color: #d6fff9; }
.hero h1 { font-size: clamp(2.4rem, 6vw, 4rem); font-weight: 800; line-height: 1.05; text-transform: uppercase; }
.hero__slogan { font-size: 1.25rem; font-weight: 600; margin-top: 8px; text-transform: uppercase; letter-spacing: .06em; }
.hero__lead { margin-top: 18px; max-width: 34em; opacity: .95; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero .btn { background: #fff; color: var(--teal-dark); }
.hero .btn--ghost { background: transparent; color: #fff; box-shadow: inset 0 0 0 2px #fff; }
.hero__media {
  position: relative; border-radius: 28px; overflow: hidden;
  aspect-ratio: 16 / 10; background: rgba(255, 255, 255, .15);
  box-shadow: 0 20px 50px rgba(0, 0, 0, .2);
}
.hero__media img { width: 100%; height: 100%; object-fit: cover; }
.hero__placeholder { display: none; }
.hero__media.is-empty .hero__placeholder {
  display: grid; place-items: center; text-align: center;
  position: absolute; inset: 0; font-weight: 600; font-size: 1.2rem;
  border: 2px dashed rgba(255, 255, 255, .6); border-radius: 28px;
}
.hero__placeholder small { font-weight: 400; opacity: .8; font-size: .85rem; }

/* Sections */
.section { padding: 80px 0; }
.section--tint { background: var(--tint); }
.section__head { max-width: 680px; margin: 0 auto 44px; text-align: center; }
.section__head h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); line-height: 1.2; margin: 6px 0 12px; }
.section__head p:last-child { color: var(--muted); }

/* About */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 40px; }
.stat { text-align: center; padding: 22px 12px; border-radius: var(--radius); background: var(--tint); }
.stat strong { display: block; font-size: 1.7rem; color: var(--teal-dark); font-weight: 800; }
.stat span { color: var(--muted); font-size: .9rem; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); }
.feature__icon { font-size: 2rem; margin-bottom: 10px; }
.feature h3 { margin-bottom: 6px; }
.feature p { color: var(--muted); }

/* Courses */
.courses { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.course {
  display: flex; flex-direction: column;
  background: #fff; border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow);
}
.course h3 { font-size: 1.3rem; margin: 12px 0 8px; }
.course p { color: var(--muted); }
.course ul { list-style: none; margin: 16px 0 20px; display: grid; gap: 6px; }
.course li::before { content: "✓"; color: var(--teal); font-weight: 700; margin-right: 8px; }
.course__link { margin-top: auto; font-weight: 600; color: var(--teal-dark); text-decoration: none; }
.course__tag {
  align-self: flex-start; display: inline-block;
  font-size: .75rem; font-weight: 700; letter-spacing: .05em;
  padding: 4px 12px; border-radius: 999px;
  background: #ddf6f3; color: var(--teal-dark);
}
.course__tag--blue { background: #e1eefc; color: var(--blue); }
.course__tag--green { background: #e3f7ec; color: #23915a; }

/* Teachers */
.teachers { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; text-align: center; }
.teacher__photo {
  aspect-ratio: 1; border-radius: 50%; overflow: hidden; margin: 0 auto 14px; width: 80%;
  background: linear-gradient(135deg, #c9f1ec, #cfe3fa);
}
.teacher__photo img { width: 100%; height: 100%; object-fit: cover; }
.teacher p { color: var(--muted); font-size: .92rem; }

/* Docs */
.docs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.doc {
  display: grid; grid-template-columns: 140px 1fr; gap: 18px;
  background: #fff; border-radius: var(--radius); padding: 18px; box-shadow: var(--shadow);
  text-decoration: none; transition: transform .15s;
}
.doc:hover { transform: translateY(-3px); }
.doc__thumb {
  position: relative; border-radius: 12px; overflow: hidden; aspect-ratio: 3 / 4;
  background: var(--tint); display: grid; place-items: center; font-size: 2.6rem;
}
.doc__thumb img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: top; }
.doc__body h3 { margin: 10px 0 6px; line-height: 1.3; }
.doc__body p { color: var(--muted); font-size: .95rem; }

/* Branches */
.branches { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.branch { border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; }
.branch h3 { display: flex; align-items: center; gap: 10px; }
.branch__no { background: var(--teal); color: #fff; font-size: .8rem; padding: 3px 10px; border-radius: 8px; }
.branch p { color: var(--muted); margin: 6px 0 14px; }
.branch iframe { width: 100%; height: 260px; border: 0; border-radius: 12px; }

/* CTA + form */
.cta { background: linear-gradient(135deg, #0f8f86, #1e7fd9); color: #fff; }
.cta__inner { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.cta h2 { font-size: clamp(1.7rem, 3.5vw, 2.3rem); line-height: 1.2; margin-bottom: 12px; }
.contact-list { list-style: none; margin-top: 24px; display: grid; gap: 10px; font-weight: 500; }
.contact-list a { color: #fff; }
.form { background: #fff; color: var(--ink); border-radius: var(--radius); padding: 28px; display: grid; gap: 14px; box-shadow: 0 20px 50px rgba(0, 0, 0, .15); }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: .9rem; }
.form input, .form select {
  font: inherit; font-weight: 400;
  padding: 11px 14px; border: 1px solid var(--line); border-radius: 10px; background: #fbfefe;
}
.form input:focus, .form select:focus { outline: 2px solid var(--teal); border-color: transparent; }
.form__note { font-size: .8rem; color: var(--muted); text-align: center; }

/* Footer */
.footer { background: #0c2a30; color: #b9d3d1; padding: 28px 0; font-size: .9rem; }
.footer__inner { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer strong { color: #fff; }

.call-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 60;
  width: 56px; height: 56px; border-radius: 50%;
  display: grid; place-items: center; font-size: 1.5rem; text-decoration: none;
  background: var(--teal); box-shadow: 0 8px 24px rgba(18, 179, 168, .5);
  animation: pulse 2s infinite;
}
@keyframes pulse { 50% { box-shadow: 0 0 0 12px rgba(18, 179, 168, 0); } }

/* Responsive */
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 68px; left: 0; right: 0;
    flex-direction: column; gap: 0; padding: 8px 16px 16px;
    background: #fff; border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a:not(.btn) { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--line); }
  .nav .btn { margin-top: 12px; }
  .hero__inner, .cta__inner { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 64px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .features, .courses { grid-template-columns: 1fr; }
  .teachers { grid-template-columns: repeat(2, 1fr); }
  .docs, .branches { grid-template-columns: 1fr; }
  .section { padding: 56px 0; }
}
@media (max-width: 480px) {
  .doc { grid-template-columns: 96px 1fr; }
}