/* Önceki Arvion2 tanıtımının kahverengi ve altın renk paleti. */
@font-face {
  font-family: Beaufort;
  src: url('font/12420e8c141ca7c3dff41de2d59df13e.woff2') format('woff2');
  font-display: swap;
}
:root {
  color-scheme: dark;
  --bg: #0b0806;
  --panel: #17100a;
  --gold: #e6bd73;
  --gold-light: #f7e8c8;
  --gold-dark: #a97832;
  --border: rgba(230,189,115,.3);
  --text: #f4f0e9;
  --muted: #b7aa97;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 86px; }
body { margin: 0; color: var(--text); background: radial-gradient(ellipse at 50% 0, #38251477, transparent 800px), var(--bg); font-family: 'Segoe UI', Arial, sans-serif; font-size: 15px; line-height: 1.6; }
body::before { content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none; background: url('arkaplan.png') center top / cover no-repeat; filter: grayscale(1) sepia(1); opacity: .19; }
a { color: inherit; text-decoration: none; }
a, button { -webkit-tap-highlight-color: transparent; }
a:focus-visible { outline: 2px solid var(--gold); outline-offset: 5px; }
img { max-width: 100%; height: auto; }
::selection { background: var(--gold); color: var(--bg); }
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #76532d; border-radius: 8px; }
.skip-link { position: fixed; top: -70px; left: 16px; z-index: 10; padding: 10px 16px; background: var(--gold); color: var(--bg); }
.skip-link:focus { top: 12px; }
.topbar { min-height: 66px; padding: 12px max(24px, calc((100% - 1280px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 24px; background: rgba(16,11,7,.94); border-bottom: 1px solid rgba(230,189,115,.2); }
.topbar-brand { white-space: nowrap; color: var(--gold-light); font: 700 23px Beaufort, Georgia, serif; letter-spacing: .07em; }
.topbar-brand > span { color: var(--gold); }
.topbar-brand small { margin-left: 14px; padding-left: 14px; border-left: 1px solid var(--border); color: var(--muted); font: 600 9px 'Segoe UI',sans-serif; letter-spacing: .19em; vertical-align: middle; }
.topbar nav { display: flex; align-items: center; gap: 26px; font-size: 12px; font-weight: 600; }
.topbar nav a { transition: color .2s; }
.topbar nav a:hover { color: var(--gold); }
.topbar nav a:last-child { color: var(--gold); }
.blok { width: min(1059px, calc(100% - 48px)); margin: 0 auto; border-left: 1px solid rgba(230,189,115,.17); border-right: 1px solid rgba(230,189,115,.17); background: linear-gradient(90deg, #100b07ed, #1b120bf2 50%, #100b07ed); box-shadow: 0 0 100px #0008; }
.content { padding: 0 66px 32px; }
.intro { padding: 56px 0 42px; text-align: center; }
.site-main-logo { display: block; width: min(520px, 88%); margin: 0 auto 18px; filter: drop-shadow(0 8px 25px #0009); transition: filter .2s, transform .2s; }
.site-main-logo:hover { transform: scale(1.015); filter: drop-shadow(0 8px 28px #e6bd732a); }
.intro-kicker { display: flex; justify-content: center; align-items: center; gap: 13px; margin: 0 0 6px; font-size: 11px; font-weight: 700; letter-spacing: .3em; color: var(--gold); }
.intro-kicker span { width: 32px; height: 1px; background: var(--border); }
.intro h1 { margin: 0; font: 500 45px/1.15 Beaufort, Georgia,serif; letter-spacing: .015em; color: var(--gold-light); }
.intro h1 em { color: var(--gold); font-style: normal; }
.intro-text { margin: 12px 0 0; font-size: 14px; color: var(--muted); }
.intro-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 25px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 22px; min-height: 45px; padding: 10px 22px; border: 1px solid var(--border); border-radius: 5px; background: #110c0880; color: var(--gold-light); font-size: 10px; font-weight: 800; letter-spacing: .1em; transition: transform .2s, border-color .2s; }
.button:hover { transform: translateY(-2px); border-color: var(--gold); }
.button-gold { background: linear-gradient(135deg,#f3dcae,#d8aa5d); border-color: #f7e8c877; color: #1b120b; box-shadow: 0 6px 24px #a978321c; }
.button span { font-size: 16px; line-height: 1; }
.anabaslik { position: relative; display: flex; align-items: center; justify-content: center; gap: 20px; width: fit-content; max-width: 100%; min-height: 66px; padding: 12px 24px; margin: 0 auto 28px; color: var(--gold-light); font: 700 23px/1.35 Beaufort, Georgia, serif; text-align: center; letter-spacing: .035em; }
.anabaslik::before, .anabaslik::after { content: ''; flex: 0 0 28px; width: 28px; height: 1px; background: linear-gradient(90deg, transparent, var(--gold-dark)); }
.anabaslik::after { transform: rotate(180deg); }
.anabaslik { border-bottom: 1px solid var(--border); }
.feature-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; }
.baslik { display: flex; align-items: center; gap: 12px; min-height: 53px; padding: 13px 17px; border: 1px solid rgba(218,174,105,.23); border-radius: 5px; background: linear-gradient(100deg,#34231499,#1a120bd9); color: #e4d7c3; font: 600 14px/1.4 Beaufort, Georgia,serif; transition: border-color .2s, background .2s, transform .2s; }
.baslik:hover { background: linear-gradient(100deg,#493219aa,#23180ddd); border-color: #e6bd7370; transform: translateY(-2px); }
.feature-mark { flex-shrink: 0; color: var(--gold); font: 10px Georgia,serif; }
.systems { padding-top: 30px; }
.system-section { padding-top: 30px; }
.center { text-align: center; }
.ss { display: block; max-width: 100%; width: auto; height: auto; margin: 0 auto; border: 1px solid rgba(230,189,115,.5); border-radius: 8px; box-shadow: 0 0 0 4px #17100a, 0 0 0 5px #e6bd731c, 0 12px 34px #0005; }
.aciklama { margin: 23px 0 25px; padding: 20px 24px; border: 1px solid rgba(218,174,105,.17); border-radius: 6px; background: linear-gradient(145deg,#251a10d9,#150f0af5); color: #bfb4a3; font: 14px/1.9 'Segoe UI',Arial,sans-serif; }
.aciklama b { color: #edd4a7; font-weight: 600; }
.aciklama u { text-underline-offset: 4px; text-decoration-color: var(--gold-dark); }
.footer { border-top: 1px solid var(--border); padding: 35px 20px 40px; background: #090705; }
.footer img { display: block; width: 150px; margin: 0 auto; }
.footer p { margin: 14px 0 9px; color: var(--gold); font-size: 10px; letter-spacing: .18em; }
.footer small { color: #847867; font-size: 11px; }
.side-menu { display: flex; flex-direction: column; gap: 12px; position: fixed; left: max(24px, calc((100% - 1450px) / 2)); top: 220px; width: 160px; }
.side-label { color: #a18a68; font: 700 10px 'Segoe UI',sans-serif; letter-spacing: .23em; margin: 0 0 5px 12px; }
.side-menu a { display: flex; align-items: center; gap: 12px; min-height: 48px; padding: 12px; border: 1px solid #e6bd7336; border-radius: 4px; color: #e6cfa7; font: 700 11px Beaufort,Georgia,serif; background: linear-gradient(100deg,#382516c9,#120c08a3); transition: border-color .2s, transform .2s; }
.side-menu a span { color: var(--gold); font: 19px Georgia,serif; }
.side-menu a:hover { border-color: var(--gold); transform: translateX(3px); }
@media (max-width: 1480px) { .side-menu { display: none; } }
@media (max-width: 760px) {
  .topbar { padding: 13px 18px; min-height: 60px; gap: 12px; }
  .topbar-brand { font-size: 20px; }
  .topbar-brand small { display: none; }
  .topbar nav { gap: 15px; font-size: 11px; }
  .blok { width: calc(100% - 24px); }
  .content { padding: 0 24px 16px; }
  .intro { padding: 40px 0 32px; }
  .intro h1 { font-size: 38px; }
  .intro-text { max-width: 280px; margin: 12px auto 0; font-size: 13px; }
  .anabaslik { font-size: 19px; padding: 12px 8px; gap: 12px; margin-bottom: 22px; }
  .anabaslik::before, .anabaslik::after { flex-basis: 18px; width: 18px; }
  .baslik { padding: 12px; font-size: 13px; gap: 9px; }
  .aciklama { padding: 16px; font-size: 13px; line-height: 1.85; }
}
@media (max-width: 480px) {
  .topbar nav { gap: 12px; }
  .topbar nav a:nth-child(2) { display: none; }
  .content { padding-right: 18px; padding-left: 18px; }
  .feature-grid { grid-template-columns: 1fr; gap: 8px; }
  .baslik { min-height: 46px; font-size: 14px; }
  .intro-actions { gap: 9px; }
  .button { padding: 10px 13px; gap: 12px; font-size: 9px; }
  .anabaslik { font-size: 18px; }
  .anabaslik::before, .anabaslik::after { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { transition: none !important; animation: none !important; } }