:root {
  --bg: #0A1025;
  --bg-2: #0D1530;
  --card: #111A39;
  --card-hover: #152044;
  --line: rgba(246, 244, 255, 0.10);
  --line-strong: rgba(159, 134, 255, 0.35);
  --text: #F6F4FF;
  --muted: #B8B5D2;
  --accent: #7C5CE8;
  --accent-light: #A890FF;
  --radius: 16px;
  --max: 1120px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--accent-light); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible, .btn:focus-visible { outline: 2px solid var(--accent-light); outline-offset: 3px; border-radius: 6px; }

.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--accent); color: #fff; padding: 10px 16px; z-index: 100;
}
.skip:focus { left: 16px; top: 12px; }

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

/* Üst çubuk */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 16, 37, 0.82);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 24px; }
.brand { display: block; line-height: 0; }
.brand img { height: 44px; width: auto; }
.nav { display: flex; align-items: center; gap: 28px; font-size: 15px; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); text-decoration: none; }
.nav .lang {
  color: var(--text); border: 1px solid var(--line-strong);
  padding: 5px 12px; border-radius: 999px; font-size: 13px; letter-spacing: 0.06em;
}
.nav .lang:hover { background: rgba(124, 92, 232, 0.18); }

/* Giriş */
.hero {
  position: relative; overflow: hidden;
  padding: 120px 0 112px;
  background:
    radial-gradient(600px 300px at 78% 38%, rgba(124, 92, 232, 0.28), transparent 70%),
    radial-gradient(900px 500px at 10% 110%, rgba(124, 92, 232, 0.12), transparent 70%),
    var(--bg);
}
.hero::after {
  content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
  width: min(1100px, 92%); height: 1px;
  background: linear-gradient(90deg, transparent, rgba(168, 144, 255, 0.55), transparent);
}
.hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-block; margin: 0 0 18px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-light);
}
.hero h1 {
  margin: 0 0 22px; font-size: clamp(34px, 5vw, 54px); line-height: 1.12;
  font-weight: 700; letter-spacing: -0.02em;
}
.hero .lead { margin: 0 0 34px; max-width: 34em; font-size: 19px; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 14px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 48px; padding: 0 24px; border-radius: 999px;
  font-size: 16px; font-weight: 600; transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #6B4BD8; }
.btn-ghost { color: var(--text); border: 1px solid var(--line-strong); }
.btn-ghost:hover { background: rgba(124, 92, 232, 0.14); }
.hero-mark { display: flex; flex-direction: column; align-items: center; text-align: center; }
.hero-mark img { width: 100%; max-width: 440px; }
.motto { margin: 14px 0 0; font-size: 15px; color: var(--muted); font-style: italic; }

/* Bölümler */
section { scroll-margin-top: 80px; }
.section { padding: 104px 0; }
.section.alt { background: var(--bg-2); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section h2 {
  margin: 0 0 22px; font-size: clamp(28px, 3.6vw, 38px); line-height: 1.2;
  font-weight: 700; letter-spacing: -0.015em;
}
.section .intro { max-width: 46em; color: var(--muted); margin: 0 0 18px; }
.two-col { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 64px; align-items: start; }
.two-col p { margin: 0 0 18px; color: var(--muted); }
.two-col p strong { color: var(--text); font-weight: 600; }

.name-note {
  border-left: 3px solid var(--accent); padding: 4px 0 4px 20px; margin: 26px 0 0;
  color: var(--text);
}

/* Kartlar */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 28px 26px; transition: background 0.2s, border-color 0.2s, transform 0.2s;
}
.card:hover { background: var(--card-hover); border-color: var(--line-strong); transform: translateY(-2px); }
.card .num { font-size: 13px; font-weight: 700; letter-spacing: 0.12em; color: var(--accent-light); }
.card h3 { margin: 10px 0 10px; font-size: 19px; line-height: 1.35; }
.card p { margin: 0; color: var(--muted); font-size: 15.5px; }

/* BPAS */
.bpas-head { max-width: 50em; }
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 44px 0 0; }
.feature { border-top: 2px solid var(--accent); padding-top: 20px; }
.feature h3 { margin: 0 0 8px; font-size: 18px; }
.feature p { margin: 0; color: var(--muted); font-size: 15.5px; }
.note { margin: 36px 0 0; color: var(--muted); font-size: 15.5px; }
.support {
  margin: 36px 0 0; padding: 22px 26px; border-radius: var(--radius);
  background: rgba(124, 92, 232, 0.10); border: 1px solid var(--line-strong);
  font-size: 15.5px; color: var(--text);
}
.support .small { display: block; margin-top: 6px; color: var(--muted); }
.watch { margin: 22px 0 0; font-size: 15.5px; }

/* Kurucular */
.people { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; margin-top: 44px; }
.person {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px 28px;
}
.person h3 { margin: 0 0 4px; font-size: 22px; }
.person .role { margin: 0 0 14px; color: var(--accent-light); font-weight: 600; font-size: 15.5px; }
.person p { margin: 0 0 14px; color: var(--muted); font-size: 15.5px; }
.person a { font-size: 15px; font-weight: 600; }

/* İletişim */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; }
.contact-item {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px;
}
.contact-item h3 {
  margin: 0 0 10px; font-size: 13px; font-weight: 700; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--accent-light);
}
.contact-item p { margin: 0; font-size: 16px; }
.contact-item address { font-style: normal; font-size: 16px; }
.contact-item .links a { display: block; margin-bottom: 6px; }

/* Alt bilgi */
.site-footer { padding: 48px 0 56px; border-top: 1px solid var(--line); font-size: 14px; color: var(--muted); }
.site-footer .legal { color: var(--text); font-weight: 600; letter-spacing: 0.01em; margin: 0 0 6px; }
.site-footer p { margin: 0 0 6px; }
.site-footer .row { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; margin-top: 18px; }

@media (min-width: 961px) {
  .cards .card:last-child:nth-child(3n+1) { grid-column: 1 / -1; }
}
@media (min-width: 761px) and (max-width: 960px) {
  .cards .card:last-child:nth-child(odd) { grid-column: 1 / -1; }
}

/* Duyarlı düzen */
@media (max-width: 960px) {
  .hero-grid, .two-col { grid-template-columns: 1fr; gap: 40px; }
  .hero-mark { order: -1; align-items: flex-start; text-align: left; }
  .hero-mark img { max-width: 320px; }
  .cards, .features, .contact-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .nav a:not(.lang):not(.nav-contact) { display: none; }
  .brand img { height: 36px; }
  .site-header .wrap { height: 64px; }
  .hero { padding: 72px 0 80px; }
  .hero-mark { order: 0; }
  .hero-mark img { max-width: 240px; }
  .hero-grid { gap: 28px; }
  .section { padding: 72px 0; }
  .cards, .features, .people, .contact-grid { grid-template-columns: 1fr; }
  body { font-size: 16px; }
  .hero .lead { font-size: 17px; }
}
@media (max-width: 420px) {
  .wrap { padding: 0 16px; }
  .brand img { height: 30px; }
  .nav { gap: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card, .btn { transition: none; }
  .card:hover, .btn:hover { transform: none; }
}