:root {
  color-scheme: light dark;
  --bg: #F2F4F8;
  --text: #111722;
  --text-2: #4A5567;
  --link: #1D4ED8;
  --border: #E1E6EE;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0A0D13;
    --text: #EEF2F7;
    --text-2: #A3AEBF;
    --link: #9CC2FF;
    --border: #1F2733;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
}
main { max-width: 680px; margin: 0 auto; padding: 24px 20px 48px; }
h1 { font-size: 1.9rem; line-height: 1.2; margin: 0.4em 0 0.6em; }
h2 { font-size: 1.3rem; line-height: 1.3; margin: 1.8em 0 0.5em; padding-top: 0.9em; border-top: 1px solid var(--border); }
h3 { font-size: 1.05rem; margin: 1.4em 0 0.3em; }
p, ul { margin: 0 0 1em; }
ul { padding-left: 1.3em; }
li { margin-bottom: 0.55em; }
a { color: var(--link); text-decoration-thickness: 1px; text-underline-offset: 2px; }
.lang { text-align: right; font-size: 0.95rem; }
.lang a, .links a { display: inline-block; padding: 10px 0; }
.links { font-size: 1.1rem; }
.email { font-size: 1.15rem; font-weight: 600; }
.footer { margin-top: 2.5em; padding-top: 1em; border-top: 1px solid var(--border); color: var(--text-2); font-size: 0.95rem; }
.site-footer { margin-top: 2.5em; padding-top: 1em; border-top: 1px solid var(--border); color: var(--text-2); font-size: 0.9rem; }
.site-footer p { margin: 0 0 0.4em; }
.site-footer a { display: inline-block; padding: 6px 0; }
.notice { padding: 12px 14px; border: 1px solid var(--border); border-radius: 10px; color: var(--text-2); }
/* tanıtım */
:root { --card: #FFFFFF; --accent: #2563EB; --accent-2: #8B5CF6; }
@media (prefers-color-scheme: dark) { :root { --card: #121823; --accent: #6EA0FF; --accent-2: #B49BFF; } }
.hero { text-align: center; padding: 8px 0 4px; }
.app-icon { display: block; margin: 8px auto 14px; width: 112px; height: 112px; border-radius: 25px; box-shadow: 0 6px 24px rgba(37, 99, 235, 0.28); }
.hero h1 { font-size: 2.3rem; margin: 0; letter-spacing: -0.01em; }
.tagline { margin: 2px 0 14px; color: var(--text-2); font-size: 1.1rem; font-weight: 600; }
.lead { font-size: 1.12rem; max-width: 34em; margin: 0 auto 12px; }
.soon { display: inline-block; margin: 4px 0 8px; padding: 6px 14px; border: 1px solid var(--border); border-radius: 999px; color: var(--text-2); font-size: 0.92rem; }
.privacy { margin: 28px 0 8px; padding: 18px 20px; border-radius: 16px; background: linear-gradient(135deg, color-mix(in srgb, var(--accent) 14%, var(--card)), color-mix(in srgb, var(--accent-2) 14%, var(--card))); border: 1px solid var(--border); }
.privacy h2 { margin: 0 0 6px; padding: 0; border: 0; font-size: 1.2rem; }
.privacy p { margin: 0; }
.cards { display: grid; grid-template-columns: 1fr; gap: 12px; margin: 20px 0 8px; }
@media (min-width: 600px) { .cards { grid-template-columns: 1fr 1fr; } }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px 4px; }
.card h3 { margin: 0 0 6px; font-size: 1.05rem; color: var(--accent); }
.card p { margin: 0 0 10px; font-size: 0.97rem; }