:root {
  --blue: #17458f;
  --blue-dk: #0d2c5e;
  --azure: #0067c8;
  --gold: #f7a81b;
  --gold-dk: #d98e00;
  --red: #e02127;
  --ink: #1c2433;
  --muted: #5b6475;
  --line: #e3e7ee;
  --tint: #f4f6fa;
  --card: #ffffff;
  --bg: #ffffff;
  --radius: 14px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #e8ecf3;
    --muted: #a9b2c3;
    --line: #2a3446;
    --tint: #131b29;
    --card: #182235;
    --bg: #0e1520;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0; font-family: "Open Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  color: var(--ink); background: var(--bg); line-height: 1.65; font-size: 17px;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--azure); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); font-weight: 800; }
h3 { font-size: 1.12rem; font-weight: 700; }
p { margin: 0 0 1em; }
.wrap { width: min(1140px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); }
.center { text-align: center; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 700; color: var(--gold-dk); margin-bottom: .5em; }
.sub { color: var(--muted); max-width: 680px; }
.note { color: var(--muted); font-size: .95rem; border-left: 3px solid var(--gold); padding-left: 12px; }

/* butonlar */
.btn { display: inline-block; padding: .8em 1.5em; border-radius: 999px; font-weight: 700; text-decoration: none; transition: transform .15s, background .15s; border: 2px solid transparent; }
.btn:hover { transform: translateY(-1px); }
.btn-gold { background: var(--gold); color: #1b1300; }
.btn-gold:hover { background: #ffb937; }
.btn-line { border-color: rgba(255,255,255,.7); color: #fff; }
.btn-line:hover { background: rgba(255,255,255,.12); }
.btn-sm { padding: .45em 1.1em; font-size: .9rem; }

/* ust menu */
.nav { position: sticky; top: 0; z-index: 20; background: var(--blue); color: #fff; box-shadow: 0 2px 12px rgba(0,0,0,.15); }
.nav-in { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; color: inherit; text-decoration: none; }
.brand img { width: 44px; height: auto; background: #fff; border-radius: 6px; padding: 2px; }
.brand span { display: flex; flex-direction: column; line-height: 1.15; }
.brand strong { font-size: 1.02rem; }
.brand small { font-size: .78rem; opacity: .85; }
#menu { display: flex; align-items: center; gap: 4px; }
#menu a:not(.btn) { color: #fff; text-decoration: none; padding: .45em .75em; border-radius: 8px; font-weight: 600; font-size: .95rem; }
#menu a:not(.btn):hover { background: rgba(255,255,255,.12); }
#menu .btn { margin-left: 8px; }
.menu-btn { display: none; background: none; border: 0; color: #fff; font-size: 1.6rem; cursor: pointer; padding: 6px 10px; }

/* hero */
.hero { background: radial-gradient(1200px 500px at 85% 20%, rgba(247,168,27,.18), transparent 60%), linear-gradient(135deg, var(--blue-dk), var(--blue) 60%, var(--azure)); color: #fff; padding: clamp(56px, 9vw, 110px) 0; }
.hero-in { display: grid; grid-template-columns: 1.3fr .7fr; gap: 40px; align-items: center; }
.hero .eyebrow { color: var(--gold); }
.hero h1 { font-size: clamp(2.3rem, 6vw, 4rem); font-weight: 800; }
.lead { font-size: clamp(1.05rem, 2vw, 1.3rem); max-width: 560px; opacity: .95; }
.lead em { font-style: normal; color: var(--gold); font-weight: 700; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.6em; }
.hero-logo { justify-self: center; width: min(300px, 70vw); background: #fff; border-radius: 18px; padding: 18px; box-shadow: 0 18px 40px rgba(0,0,0,.35); }

/* sayilar */
.facts { background: var(--gold); color: #1b1300; }
.facts-in { display: grid; grid-template-columns: repeat(4, 1fr); text-align: center; }
.facts-in div { padding: 22px 8px; }
.facts-in div + div { border-left: 1px solid rgba(0,0,0,.12); }
.facts b { display: block; font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 800; }
.facts span { font-size: .85rem; line-height: 1.35; display: block; }

/* bolumler */
.sec { padding: clamp(56px, 8vw, 96px) 0; }
.sec-tint { background: var(--tint); }
.sec-blue { background: var(--blue); color: #fff; }
.sec-blue p { opacity: .95; }
.two { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: start; }
.cards-col { display: grid; gap: 16px; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; margin-top: 28px; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; box-shadow: 0 1px 2px rgba(16,24,40,.04); }
.card p { color: var(--muted); margin: 0; font-size: .96rem; }
.card-blue { background: var(--blue); border-color: var(--blue); color: #fff; }
.card-blue p { color: #fff; }
.card .big { font-size: 1.35rem; font-weight: 800; }
.tag { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--blue); background: rgba(23,69,143,.08); border-radius: 999px; padding: .2em .7em; margin-bottom: .7em; }
@media (prefers-color-scheme: dark) { .tag { color: #9cc1ff; background: rgba(156,193,255,.12); } }

/* baskanlar */
.recent { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin: 28px 0 26px; }
.recent div { border: 1px solid var(--line); border-left: 4px solid var(--gold); border-radius: 10px; padding: 12px 16px; background: var(--card); }
.recent span { display: block; font-size: .8rem; color: var(--muted); font-weight: 700; }
.recent b { font-size: 1.05rem; }
.gallery { display: grid; grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 14px; }
.pp { background: none; border: 0; padding: 0; cursor: zoom-in; text-align: center; color: inherit; font: inherit; }
.pp img { width: 100%; aspect-ratio: 360 / 509; object-fit: cover; border-radius: 8px; box-shadow: 0 4px 14px rgba(0,0,0,.12); transition: transform .2s; }
.pp:hover img, .pp:focus-visible img { transform: translateY(-3px); }
.pp span { display: block; font-size: .82rem; font-weight: 700; color: var(--muted); margin-top: 6px; }
#lb { border: 0; padding: 0; background: transparent; max-width: min(92vw, 520px); }
#lb::backdrop { background: rgba(5,10,20,.8); }
#lb img { border-radius: 10px; max-height: 80vh; width: auto; margin: auto; }
#lb p { color: #fff; text-align: center; font-weight: 700; margin: 10px 0 0; }
.lb-x { position: absolute; top: 8px; right: 8px; background: rgba(0,0,0,.55); color: #fff; border: 0; border-radius: 50%; width: 36px; height: 36px; font-size: 1rem; cursor: pointer; }

/* toplanti */
.meet { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 8px 22px; box-shadow: 0 10px 30px rgba(23,69,143,.08); }
.meet-row { display: flex; gap: 16px; padding: 16px 0; }
.meet-row + .meet-row { border-top: 1px solid var(--line); }
.meet-row p { margin: 0; color: var(--muted); }
.ico { font-size: 1.5rem; line-height: 1; }

/* iletisim */
.contact { display: flex; flex-direction: column; gap: 4px; text-decoration: none; color: var(--ink); transition: border-color .15s, transform .15s; }
.contact:hover { border-color: var(--gold); transform: translateY(-2px); }
.contact span:last-child { color: var(--muted); font-size: .92rem; word-break: break-word; }

/* alt bilgi */
.foot { background: var(--blue-dk); color: #fff; padding: 36px 0; }
.foot-in { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px; }
.foot-links { display: flex; flex-wrap: wrap; gap: 18px; }
.foot-links a { color: #fff; opacity: .85; text-decoration: none; }
.foot-links a:hover { opacity: 1; text-decoration: underline; }
.copy { width: 100%; margin: 0; font-size: .85rem; opacity: .7; }

/* mobil */
@media (max-width: 900px) {
  .menu-btn { display: block; }
  #menu { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: var(--blue); padding: 8px 16px 18px; gap: 2px; box-shadow: 0 10px 20px rgba(0,0,0,.2); }
  #menu.open { display: flex; }
  #menu a:not(.btn) { padding: .75em .5em; }
  #menu .btn { margin: 10px 0 0; text-align: center; }
  .hero-in, .two { grid-template-columns: 1fr; }
  .hero-logo { width: min(220px, 60vw); grid-row: 1; }
  .facts-in { grid-template-columns: repeat(2, 1fr); }
  .facts-in div:nth-child(3) { border-left: 0; }
  .facts-in div:nth-child(n+3) { border-top: 1px solid rgba(0,0,0,.12); }
}

/* baskan listesi */
.plist { list-style: none; padding: 0; margin: 28px 0 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.plist li { background: var(--card); border: 1px solid var(--line); border-left: 4px solid var(--line); border-radius: 10px; padding: 10px 14px; }
.plist span { display: block; font-size: .78rem; font-weight: 700; color: var(--muted); letter-spacing: .02em; }
.plist b { font-size: 1rem; }
.plist em { display: block; font-style: normal; font-size: .75rem; color: var(--gold-dk); font-weight: 700; }
.plist li.now, .plist li.first { border-left-color: var(--gold); }
.plist li.now { background: var(--blue); border-color: var(--blue); color: #fff; }
.plist li.now span, .plist li.now em { color: #ffd27a; }