:root {
  --bg: #f3f5f8;
  --surface: #ffffff;
  --deep: #0f1b2d;
  --on-deep: #e8edf4;
  --text: #0f1b2d;
  --muted: #455468;
  --line: #d5dce4;
  --accent: #0b5d64;
  --on-accent: #ffffff;
  --soft: #d5ecee;
  --amber: #f0b454;
  --notice-bg: #fff6e5;
  --notice-text: #5a3a00;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --surface: #141d30;
    --deep: #05080f;
    --text: #e8edf4;
    --muted: #a3b1c6;
    --line: #26334a;
    --accent: #5cc8cf;
    --on-accent: #0b1220;
    --soft: #18333a;
    --notice-bg: #2a2110;
    --notice-text: #f0b454;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main, header.top, footer { max-width: 720px; margin: 0 auto; padding: 0 16px; }
header.top { padding-top: 24px; }
.brand { font-weight: 700; font-size: 20px; color: var(--text); text-decoration: none; }
.brand span { color: var(--muted); font-weight: 400; }
nav.lang { margin: 16px 0 8px; font-size: 15px; }
nav.lang a { margin-inline-end: 16px; }
a { color: var(--accent); }
section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 20px 20px;
  margin: 16px 0;
  scroll-margin-top: 12px;
  overflow-wrap: anywhere;
}
h1 { font-size: 26px; line-height: 1.25; margin: 20px 0 8px; }
h2 { font-size: 18px; margin: 28px 0 6px; }
p, li { margin: 8px 0; }
ul { padding-inline-start: 22px; }
.notice {
  background: var(--notice-bg);
  color: var(--notice-text);
  border-radius: 8px;
  padding: 10px 12px;
  font-size: 14px;
}
.muted { color: var(--muted); font-size: 14px; }
.totop { font-size: 14px; }
footer { padding-bottom: 40px; font-size: 14px; color: var(--muted); }
footer a { margin-inline-end: 14px; }

/* ---- Tanıtım sayfası ---- */
.home main, .home header.top, .home footer { max-width: 1040px; }
.anchor { position: absolute; top: 0; }
.l-en { display: none; }
#en:target ~ .l-tr { display: none; }
#en:target ~ .l-en { display: block; }

.bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.bar .brand { display: inline-flex; align-items: center; gap: 10px; font-size: 22px; }
.bar .brand img { width: 36px; height: 36px; }
.bar nav { display: flex; align-items: center; gap: 16px; font-size: 15px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 11px 20px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--accent);
}
.btn.ghost { background: transparent; color: var(--accent); }
.btn.small { padding: 7px 14px; font-size: 15px; }
.btn:hover { filter: brightness(1.08); }

.hero { padding: 56px 0 40px; display: grid; grid-template-columns: 1.3fr 1fr; gap: 40px; align-items: center; }
.hero h1 { font-size: clamp(36px, 7vw, 60px); line-height: 1.05; letter-spacing: -0.02em; margin: 0 0 16px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lead { font-size: 19px; color: var(--muted); max-width: 34em; margin: 0 0 24px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .note { font-size: 14px; color: var(--muted); margin-top: 14px; }
.hero .mark { justify-self: center; width: min(300px, 70%); filter: drop-shadow(0 18px 30px rgba(15, 27, 45, 0.18)); }

.home h2 { font-size: 26px; line-height: 1.2; margin: 48px 0 6px; }
.home .sub { color: var(--muted); margin: 0 0 20px; max-width: 40em; }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(3, 1fr); }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  overflow-wrap: anywhere;
}
.card h3 { font-size: 17px; margin: 0 0 6px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
.step {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--soft); color: var(--accent); font-weight: 700; margin-bottom: 12px;
}
.band {
  background: var(--deep); color: var(--on-deep);
  border-radius: 18px; padding: 32px; margin: 48px 0 0;
}
.band h2 { margin-top: 0; color: var(--on-deep); }
.band .sub { color: #a3b1c6; }
.band ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px 32px; grid-template-columns: repeat(2, 1fr); }
.band li { margin: 0; padding-inline-start: 22px; position: relative; }
.band li::before { content: ""; position: absolute; inset-inline-start: 0; top: 0.6em; width: 10px; height: 10px; border-radius: 50%; background: var(--amber); }
.closing { text-align: center; padding: 56px 0 24px; }
.closing h2 { margin-top: 0; }
.closing .sub { margin-inline: auto; }
.closing .cta { justify-content: center; margin-top: 20px; }
.home footer { border-top: 1px solid var(--line); padding-top: 20px; margin-top: 32px; }

@media (max-width: 760px) {
  .hero { grid-template-columns: minmax(0, 1fr); padding-top: 32px; gap: 24px; }
  .hero .mark { order: -1; width: 140px; justify-self: start; }
  .grid, .grid.two, .band ul { grid-template-columns: minmax(0, 1fr); }
  .band { padding: 24px 20px; }
}