:root {
  --brand: #063ab3;
  --brand-dark: #052c88;
  --navy: #0b1f3a;
  --accent: #23d6dd;
  --ink: #142e46;
  --text: #3d5266;
  --muted: #6b7c8c;
  --line: #e3e8ee;
  --surface: #ffffff;
  --surface-muted: #f5f7fa;
  --coach: #5d29f3;
  --read: #2fb800;
  --study: #ff7900;

  --radius: 12px;
  --radius-lg: 18px;
  --shadow: 0 1px 2px rgba(11, 31, 58, .04), 0 8px 24px rgba(11, 31, 58, .06);
  --container: 1180px;
  --header-h: 76px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 8px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3 { color: var(--ink); line-height: 1.2; margin: 0 0 .6em; letter-spacing: -.01em; }
h1 { font-size: clamp(2.1rem, 4.2vw, 3.3rem); font-weight: 700; letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 600; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
figure { margin: 0; }

:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 8px;
}
.skip-link:focus { top: 12px; }

#top {
  position: absolute; top: 0; left: 0; width: 1px; height: 1px;
  overflow: hidden; pointer-events: none;
}

.eyebrow {
  font-size: .8rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: var(--brand); margin-bottom: .9rem;
}
.lead { font-size: 1.125rem; color: var(--text); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: .8em 1.4em; border-radius: 999px; border: 1.5px solid transparent;
  font: inherit; font-weight: 600; font-size: .95rem; line-height: 1.2;
  cursor: pointer; transition: background-color .2s, color .2s, border-color .2s;
}
.btn:hover { text-decoration: none; }
.btn-sm { padding: .6em 1.15em; font-size: .875rem; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-outline { border-color: var(--line); color: var(--ink); background: #fff; }
.btn-outline:hover { border-color: var(--brand); color: var(--brand); }
.btn-light { background: #fff; color: var(--brand); }
.btn-light:hover { background: #e9f0ff; }

.link-arrow { font-weight: 600; font-size: .95rem; display: inline-flex; align-items: center; gap: .35em; }
.link-arrow::after { content: "→"; transition: transform .2s; }
.link-arrow:hover { text-decoration: none; }
.link-arrow:hover::after { transform: translateX(3px); }
a[target="_blank"].link-arrow::after { content: "↗"; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: var(--brand); color: #fff;
  transition: box-shadow .2s;
}
.site-header.is-scrolled { box-shadow: 0 4px 18px rgba(5, 25, 70, .25); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }
.brand img { height: 46px; width: auto; }

.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav ul { display: flex; gap: 4px; }
.site-nav ul a {
  display: block; padding: 8px 12px; border-radius: 8px;
  color: rgba(255, 255, 255, .85); font-size: .93rem; font-weight: 500;
}
.site-nav ul a:hover { color: #fff; background: rgba(255, 255, 255, .1); text-decoration: none; }
.site-nav ul a.is-active { color: #fff; background: rgba(255, 255, 255, .16); }
.nav-tools { display: flex; align-items: center; gap: 14px; }

.lang-switch { display: inline-flex; border: 1px solid rgba(255, 255, 255, .35); border-radius: 999px; padding: 2px; }
.lang-switch button {
  font: inherit; font-size: .78rem; font-weight: 600; letter-spacing: .04em;
  background: none; border: 0; color: rgba(255, 255, 255, .8);
  padding: 5px 10px; border-radius: 999px; cursor: pointer;
}
.lang-switch button[aria-pressed="true"] { background: #fff; color: var(--brand); }

.nav-toggle {
  display: none; width: 44px; height: 44px; padding: 0; border: 0; border-radius: 8px;
  background: transparent; cursor: pointer; position: relative;
}
.nav-toggle span {
  position: absolute; left: 11px; width: 22px; height: 2px; background: #fff; border-radius: 2px;
  transition: transform .25s, opacity .2s;
}
.nav-toggle span:nth-child(1) { top: 15px; }
.nav-toggle span:nth-child(2) { top: 21px; }
.nav-toggle span:nth-child(3) { top: 27px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* Hero */
.hero { padding: 72px 0 64px; }
.hero-inner { display: grid; grid-template-columns: 1fr 1.05fr; gap: 56px; align-items: center; }
.hero h1 .accent { color: var(--brand); }
.hero-tagline { font-size: 1.25rem; font-weight: 600; color: var(--ink); margin-bottom: .5em; }
.hero .lead { max-width: 520px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }
.hero-media img { border-radius: var(--radius-lg); box-shadow: var(--shadow); aspect-ratio: 16 / 10; object-fit: cover; width: 100%; }

/* Intro */
.intro { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: var(--surface-muted); }
.intro-inner { display: flex; align-items: baseline; justify-content: space-between; gap: 32px; padding-top: 36px; padding-bottom: 36px; }
.intro h2 { margin: 0; font-size: clamp(1.4rem, 2.4vw, 1.8rem); }
.intro p { margin: 0; max-width: 520px; font-size: 1.05rem; }

/* Sections */
.section { padding: 96px 0; }
.section-muted { background: var(--surface-muted); }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head p:last-child { margin-bottom: 0; font-size: 1.05rem; }

/* Products */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  display: flex; flex-direction: column;
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 28px; position: relative; overflow: hidden;
  transition: box-shadow .2s, transform .2s;
}
.product-card::before { content: ""; position: absolute; inset: 0 0 auto 0; height: 4px; background: var(--card-color, var(--brand)); }
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.product-coach { --card-color: var(--coach); }
.product-read { --card-color: var(--read); }
.product-study { --card-color: var(--study); }

.product-logo {
  height: 72px; display: flex; align-items: center; justify-content: flex-start;
  gap: 12px; margin-bottom: 20px; background: var(--navy); border-radius: var(--radius);
  padding: 0 18px; overflow: hidden;
}
.product-logo--read { background: #2bf000; }
.product-mark {
  width: 40px; height: 40px; flex-shrink: 0; overflow: hidden;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 10px;
}
.product-mark img {
  display: block; width: 40px; height: 40px;
  object-fit: cover; object-position: center;
}
.product-wordmark {
  font-size: 1.35rem; font-weight: 700; letter-spacing: -.02em;
  line-height: 1; white-space: nowrap;
}
.product-logo--coach .product-wordmark,
.product-logo--coach .product-wordmark span { color: #8ef0f6; }
.product-logo--read .product-wordmark { color: #0d3d08; }
.product-logo--read .product-wordmark span { color: #fff; }
.product-logo--study .product-wordmark { color: #fff; }
.product-logo--study .product-wordmark span { color: var(--study); }

.product-category { font-size: .8rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-bottom: .5rem; }
.product-card h3 { font-size: 1.25rem; }
.check-list { margin: 4px 0 24px; display: grid; gap: 8px; }
.check-list li { position: relative; padding-left: 26px; font-size: .95rem; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: .45em; width: 14px; height: 14px; border-radius: 50%;
  background: var(--card-color, var(--brand));
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 0a8 8 0 1 0 0 16A8 8 0 0 0 8 0zm3.6 5.8-4.2 4.6a.8.8 0 0 1-1.2 0L4.4 8.5a.8.8 0 1 1 1.2-1.1l1.2 1.3 3.6-4a.8.8 0 1 1 1.2 1.1z'/%3E%3C/svg%3E") center / contain no-repeat;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M8 0a8 8 0 1 0 0 16A8 8 0 0 0 8 0zm3.6 5.8-4.2 4.6a.8.8 0 0 1-1.2 0L4.4 8.5a.8.8 0 1 1 1.2-1.1l1.2 1.3 3.6-4a.8.8 0 1 1 1.2 1.1z'/%3E%3C/svg%3E") center / contain no-repeat;
}
.product-actions { margin-top: auto; display: flex; flex-wrap: wrap; align-items: center; gap: 16px; }
.status {
  margin: auto 0 0; padding-top: 16px; border-top: 1px solid var(--line);
  font-size: .8rem; color: var(--muted); display: flex; align-items: center; gap: 8px;
}
.status::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #f5a623; flex: none; }

.product-screen { margin-top: 56px; }
.product-screen img { border-radius: var(--radius-lg); border: 1px solid var(--line); box-shadow: var(--shadow); margin: 0 auto; }
.product-screen figcaption { text-align: center; font-size: .85rem; color: var(--muted); margin-top: 14px; }

/* Info cards */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.info-card {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 32px 28px; display: flex; flex-direction: column;
}
.info-card .num { font-size: .85rem; font-weight: 700; color: var(--brand); margin-bottom: 18px; letter-spacing: .05em; }
.info-card p { flex: 1; }
.info-card .link-arrow { margin-top: 8px; }

/* ODİIB */
.ib-intro {
  display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(28px, 5vw, 56px);
  align-items: center; margin-bottom: 56px; padding: clamp(36px, 5vw, 56px);
  border-radius: var(--radius-lg); color: #d7e6f2;
  background:
    radial-gradient(ellipse at 88% 35%, rgba(35, 214, 221, .18), transparent 55%),
    linear-gradient(160deg, #063ab3 0%, #052c88 48%, #0b1f3a 100%);
}
.ib-kicker {
  font-size: .78rem; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
  color: rgba(134, 233, 238, .9); margin: 0 0 18px;
}
.ib-logo { height: 52px; width: auto; margin: 0 0 22px; }
#ib-title {
  font-size: clamp(1.85rem, 3.4vw, 2.65rem); color: #fff; margin: 0 0 16px; max-width: 16ch;
}
#ib-title em { color: var(--accent); font-style: normal; }
.ib-lead { font-size: 1.15rem; color: #e8f2fa; max-width: 36rem; margin-bottom: 16px; }
.ib-text { color: rgba(215, 230, 242, .88); max-width: 36rem; }
.ib-status {
  display: inline-block; margin: 0 0 18px; padding: 8px 12px;
  border: 1px solid rgba(83, 225, 239, .45); border-radius: 6px;
  font-size: .78rem; font-weight: 600; letter-spacing: .02em;
  color: #86e9ee; background: rgba(6, 27, 48, .25);
}
.ib-intro .actions { margin-top: 8px; }
.ib-intro .btn-light { color: var(--brand-dark); }
.ib-intro .btn-light:hover { background: var(--accent); color: #061b30; }

.ib-statement {
  position: relative; display: grid; grid-template-columns: auto 1fr;
  column-gap: 20px; row-gap: 0; align-items: center;
  padding: 28px 24px 28px 28px;
  border: 1px solid rgba(77, 201, 220, .35); border-radius: 12px;
  background: rgba(6, 27, 48, .28);
}
.ib-outline {
  font-size: clamp(4.5rem, 8vw, 6.5rem); line-height: .85; font-weight: 700;
  letter-spacing: -.06em; color: transparent;
  -webkit-text-stroke: 1.5px rgba(77, 201, 220, .85);
  text-stroke: 1.5px rgba(77, 201, 220, .85);
  user-select: none;
}
.ib-approach-title {
  margin: 0; font-size: clamp(1.1rem, 1.6vw, 1.35rem); font-weight: 600;
  color: #e8f5ff; line-height: 1.35;
}
.ib-words {
  grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 10px;
  margin: 22px 0 0;
}
.ib-words span {
  border: 1px solid rgba(45, 105, 127, .95); color: #75e1e9;
  border-radius: 4px; padding: 9px 14px; font-size: .78rem; font-weight: 600;
  letter-spacing: .02em; background: transparent;
}
.ib-statement > small {
  grid-column: 1 / -1; display: block; margin-top: 18px;
  font-size: .72rem; letter-spacing: .04em; color: #8eacbf;
}
.ib-block-head { margin-top: 24px; }
.ib-programme-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.ib-programme-grid h4 { margin: 0 0 .5em; font-size: 1.05rem; color: var(--ink); }
.ib-programme-grid .link-arrow { margin-top: auto; }
.ib-ped-grid { margin-bottom: 56px; }
.ib-cycle {
  list-style: none; margin: 0 0 48px; padding: 0;
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
}
.ib-cycle li {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 24px 20px;
}
.ib-cycle .num { display: block; font-size: .85rem; font-weight: 700; color: var(--brand); margin-bottom: 12px; letter-spacing: .05em; }
.ib-cycle h4 { margin: 0 0 .4em; font-size: 1rem; }
.ib-cycle p { margin: 0; font-size: .92rem; }
.ib-cta {
  align-items: flex-start;
  background: #fff;
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}
.ib-cta h3 { margin: 0 0 .5em; font-size: 1.35rem; color: var(--ink); }
.ib-cta p { margin: 0 0 .8em; font-weight: 400; font-size: 1rem; max-width: 640px; color: var(--text); }
.ib-disclaimer { font-size: .85rem !important; color: var(--muted) !important; }

/* About */
.about-intro { max-width: 760px; margin-bottom: 16px; }
.about-intro p:last-child { margin-bottom: 0; }
.about-blocks { border-top: 1px solid var(--line); margin-top: 48px; }
.about-blocks article {
  display: grid; grid-template-columns: minmax(220px, 300px) 1fr; gap: 48px;
  padding: 36px 0; border-bottom: 1px solid var(--line);
}
.about-blocks h3 { margin: 0; font-size: 1.2rem; }
.about-blocks p:last-child { margin-bottom: 0; }
.about-cta {
  margin-top: 48px; display: flex; align-items: center; justify-content: space-between; gap: 32px;
  background: var(--surface-muted); border-radius: var(--radius-lg); padding: 32px 36px;
}
.about-cta p { margin: 0; font-size: 1.2rem; font-weight: 600; color: var(--ink); max-width: 560px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: minmax(240px, 340px) 1fr; gap: 48px; align-items: start; }
.contact-info h3 { font-size: 1.6rem; margin-bottom: .5em; }
.contact-mail { display: inline-block; font-size: 1.15rem; font-weight: 600; margin-bottom: 4px; }
.contact-place { color: var(--muted); margin-bottom: .6em; }
.contact-social {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius-lg);
  padding: 32px 28px; box-shadow: var(--shadow);
}
.contact-social h3 { font-size: 1.6rem; margin-bottom: .5em; }
.contact-social > p { margin-bottom: 24px; }
.social-list { display: flex; flex-direction: column; gap: 12px; }
.social-link {
  display: flex; align-items: center; gap: 16px; padding: 16px 18px;
  border: 1px solid var(--line); border-radius: 12px; color: var(--ink);
  transition: border-color .2s, background-color .2s;
}
.social-link:hover { text-decoration: none; border-color: var(--brand); background: var(--surface-muted); }
.social-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
  background: rgba(6, 58, 179, .08); color: var(--brand);
}
.social-meta { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.social-meta strong { font-size: .95rem; }
.social-meta span { font-size: .9rem; color: var(--muted); }

/* Footer */
.site-footer { background: var(--brand); color: rgba(255, 255, 255, .8); font-size: .92rem; }
.footer-top { display: flex; justify-content: space-between; align-items: center; gap: 32px; padding-top: 48px; padding-bottom: 32px; }
.footer-brand img { height: 44px; width: auto; margin-bottom: 10px; }
.footer-brand p { margin: 0; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 8px 24px; }
.site-footer a { color: rgba(255, 255, 255, .85); }
.site-footer a:hover { color: #fff; }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  position: relative; padding-top: 20px; padding-bottom: 28px; font-size: .85rem;
}
.footer-bottom::before {
  content: ""; position: absolute; top: 0; left: 24px; right: 24px;
  border-top: 1px solid rgba(255, 255, 255, .18);
}
.footer-bottom p { margin: 0; }

/* Responsive */
@media (max-width: 1080px) {
  .site-nav ul a { padding: 8px 9px; font-size: .88rem; }
  .site-nav { gap: 16px; }
}

@media (max-width: 960px) {
  :root { --header-h: 68px; }
  .brand img { height: 40px; }
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed; top: var(--header-h); left: 0; right: 0; bottom: 0;
    background: var(--brand); flex-direction: column; align-items: stretch; gap: 24px;
    padding: 16px 24px 32px; overflow-y: auto;
    visibility: hidden; opacity: 0; transform: translateY(-8px);
    transition: opacity .2s, transform .2s, visibility 0s .2s;
  }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: none; transition: opacity .2s, transform .2s; }
  .site-nav ul { flex-direction: column; gap: 0; }
  .site-nav ul a { padding: 14px 4px; font-size: 1.05rem; border-bottom: 1px solid rgba(255, 255, 255, .14); border-radius: 0; }
  .site-nav ul a:hover, .site-nav ul a.is-active { background: none; }
  .nav-tools { justify-content: space-between; }
  body.nav-open { overflow: hidden; }

  .hero { padding: 48px 0; }
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .about-blocks article { grid-template-columns: 1fr; gap: 12px; padding: 28px 0; }
  .about-cta { flex-direction: column; align-items: flex-start; padding: 28px 24px; }
  .product-grid, .card-grid { grid-template-columns: 1fr; max-width: 620px; }
  .ib-intro { grid-template-columns: 1fr; gap: 28px; padding: 32px 24px; }
  .ib-statement { grid-template-columns: 72px 1fr; padding: 24px 20px; }
  .ib-outline { font-size: 4.25rem; }
  .ib-programme-grid { grid-template-columns: 1fr; max-width: 620px; }
  .ib-cycle { grid-template-columns: 1fr 1fr; }
  .intro-inner { flex-direction: column; gap: 10px; }
  .section { padding: 72px 0; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-top { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .actions .btn { width: 100%; }
  .product-card, .info-card, .contact-social { padding: 24px 20px; }
  .ib-cycle { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}