/* B12'e daha yakın açık tema */
:root{
  --bg:#ffffff;
  --muted:#6b7280;
  --text:#0f1c2e;
  --border:#e5e7eb;
  --card:#ffffff;
  --accent:#ff3c2a;      /* B12'deki morumsu mavi */
  --accent-dark:#e03525;
  --shadow:0 18px 50px rgba(17,24,39,.10);
  --radius:18px;
  --container:1180px;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family:Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background:var(--bg);
  color:var(--text);
}
a{color:inherit;text-decoration:none}
.container{width:min(var(--container), calc(100% - 48px)); margin:0 auto;}

.header{
  position:sticky; top:0; z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{
  display:flex; align-items:center; gap:18px;
  padding:18px 0;
}
.logo{
  display:flex;
  align-items:center;
  min-width:150px;
}

.logo-img{
  height:45px;
  width:auto;
  display:block;
}

.nav{
  display:flex;
  gap:26px;
  justify-content:center;
  flex:1;
  color:var(--text);
  font-weight:500;
}
.nav a{padding:6px 2px}
.nav a:hover{color:var(--accent);}

.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:12px 18px;
  border-radius:12px;
  background:var(--accent);
  color:#fff;
  font-weight:700;
  border:1px solid rgba(91,95,240,.35);
  box-shadow:0 10px 24px rgba(91,95,240,.18);
}
.btn:hover{background:var(--accent-dark)}
.btn-outline{
  background:transparent;
  color:var(--accent);
  border:1.6px solid var(--accent);
  box-shadow:none;
}
.btn-outline:hover{background:rgba(91,95,240,.06)}
.btn-nav{border-radius:14px; padding:12px 16px}

.menu-btn{
  display:none;
  border:1px solid var(--border);
  background:#fff;
  border-radius:12px;
  padding:10px 12px;
  font-size:18px;
  cursor:pointer;
}
.mobile-nav{
  display:none;
  border-top:1px solid var(--border);
  padding:14px 0 18px;
}
.mobile-nav a{display:block; padding:10px 0; color:#374151}

.hero{padding:54px 0 30px;}
.hero-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  align-items:center;
  gap:60px;
}
h1{
  margin:0 0 18px;
  font-size:56px;
  line-height:1.06;
  letter-spacing:-.8px;
  font-weight:800;
}
.hero-text{
  margin:0 0 26px;
  color:var(--muted);
  font-size:16px;
  line-height:1.85;
  max-width:540px;
}
.hero-actions{display:flex; gap:14px; flex-wrap:wrap;}

.orange-card{
  background: linear-gradient(145deg, #c27069, #ff3c2a);
  border-radius: 12px;
  padding: 44px 44px;
  box-shadow: 0 16px 40px rgba(17,24,39,.14);
  display:flex;
  align-items:center;
  justify-content:center;
  min-height: 420px;
}
.tablet{
  width:min(520px, 100%);
  height:auto;
  filter: drop-shadow(0 18px 24px rgba(0,0,0,.20));
}

.section{padding:56px 0;}
.section.alt{background:#fbfbfe; border-top:1px solid var(--border); border-bottom:1px solid var(--border);}
.section-title{margin:0 0 8px; font-size:34px; letter-spacing:-.2px;}
.section-subtitle{margin:0 0 22px; color:var(--muted);}

.cards{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap:18px;
}
.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:16px;
  padding:22px 18px;
  box-shadow:0 12px 26px rgba(17,24,39,.06);
}
.card-ico{
  width:44px; height:44px;
  border-radius:14px;
  display:grid; place-items:center;
  background:#f3f4ff;
  border:1px solid #e7e8ff;
  font-size:20px;
}
.card h3{margin:14px 0 10px; font-size:18px;}
.card p{margin:0; color:var(--muted); font-size:14px; line-height:1.75;}

.how-grid{
  display:grid;
  grid-template-columns: 1.05fr .95fr;
  gap:40px;
  align-items:start;
}
.steps{list-style:none; padding:0; margin:18px 0 0; display:grid; gap:14px;}
.steps li{
  display:grid;
  grid-template-columns: 40px 1fr;
  gap:14px;
  padding:18px;
  border:1px solid var(--border);
  border-radius:16px;
  background:#fff;
  box-shadow:0 12px 26px rgba(17,24,39,.06);
}
.steps li span{
  width:40px; height:40px;
  border-radius:14px;
  display:grid; place-items:center;
  background:rgba(91,95,240,.10);
  color:var(--accent);
  font-weight:800;
}
.steps h3{margin:0 0 6px; font-size:16px;}
.steps p{margin:0; color:var(--muted); font-size:14px; line-height:1.7;}

.how-media img{
  width:100%;
  border-radius:16px;
  border:1px solid var(--border);
  box-shadow:var(--shadow);
}

.brand-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap:24px;
  align-items:start;
}
.p{color:var(--muted); line-height:1.85; margin:0 0 12px;}
.panel{
  background:#fff;
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
  box-shadow:0 12px 26px rgba(17,24,39,.06);
}
.panel h3{margin:0 0 10px;}
.panel ul{margin:0; padding-left:18px; color:var(--muted); display:grid; gap:8px;}

.contact-grid{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:26px;
  align-items:start;
}
.contact-boxes{display:grid; grid-template-columns:1fr 1fr; gap:12px; margin-top:14px;}
.contact-box{
  border:1px solid var(--border);
  border-radius:16px;
  padding:16px;
  box-shadow:0 12px 26px rgba(17,24,39,.06);
}
.lbl{color:var(--muted); font-size:12px; margin-bottom:6px; font-weight:600;}

.form{
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
  box-shadow:var(--shadow);
  background:#fff;
}
.form label{display:block; font-weight:600; color:#374151; font-size:13px; margin-bottom:12px;}
.form input, .form textarea{
  width:100%;
  margin-top:8px;
  padding:12px 12px;
  border:1px solid #d1d5db;
  border-radius:12px;
  outline:none;
  font-family:inherit;
}
.form input:focus, .form textarea:focus{
  border-color:rgba(91,95,240,.55);
  box-shadow:0 0 0 3px rgba(91,95,240,.14);
}
.hp{display:none !important;}
.hint{min-height:18px; margin:10px 0 0; color:var(--muted); font-size:13px;}
.mini{margin:8px 0 0; color:var(--muted); font-size:12px; line-height:1.6;}
.hint { margin-top: 10px; font-size: 14px; }
.hint.ok { color: #16a34a; }
.hint.err { color: #dc2626; }

.footer{
  border-top:1px solid var(--border);
  padding:22px 0;
  background:#fff;
}
.footer-inner{display:flex; justify-content:space-between; align-items:center; gap:16px; color:#374151;}
.f-links{display:flex; gap:14px; color:var(--muted);}
.f-links a:hover{text-decoration:underline; text-underline-offset:4px}

@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr; gap:28px;}
  h1{font-size:44px;}
  .orange-card{min-height:auto;}
  .cards{grid-template-columns:repeat(2,1fr);}
  .how-grid, .brand-grid, .contact-grid{grid-template-columns:1fr;}
}
@media (max-width: 740px){
  .nav, .btn-nav{display:none;}
  .menu-btn{display:inline-flex; margin-left:auto;}
  .mobile-nav.open{display:block;}
  .cards{grid-template-columns:1fr;}
  .contact-boxes{grid-template-columns:1fr;}
}