:root{
    --ink:#15233B;        /* lacivert */
    --ink2:#22324f;
    --paper:#FBF8F2;      /* fildişi */
    --cream:#F1EADC;
    --gold:#A67C3D;       /* okr/altın aksan */
    --gold2:#8A6630;
    --mute:#5B6373;
    --line:#E3DAC8;
    --white:#fff;
  }
  *{margin:0;padding:0;box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{font-family:Inter,system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.6;-webkit-font-smoothing:antialiased}
  h1,h2,h3,h4{font-family:Spectral,Georgia,serif;font-weight:500;line-height:1.15;color:var(--ink)}
  a{color:inherit}
  .wrap{max-width:1120px;margin:0 auto;padding:0 28px}
  .ey{font-size:12px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold);font-weight:600}

  /* NAV */
  header.nav{position:sticky;top:0;z-index:30;background:rgba(251,248,242,.9);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
  .nav .wrap{display:flex;align-items:center;justify-content:space-between;height:70px}
  .brand{font-family:Spectral,serif;font-weight:600;font-size:20px;letter-spacing:.04em}
  .brand span{color:var(--gold)}
  nav.menu{display:flex;gap:26px}
  nav.menu a{font-size:14px;color:var(--ink2);text-decoration:none;font-weight:500}
  nav.menu a:hover{color:var(--gold)}
  .navcta{background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:4px;font-size:13px;font-weight:600;text-decoration:none}
  @media(max-width:820px){nav.menu{display:none}}

  /* HERO */
  .hero{background:linear-gradient(160deg,var(--ink) 0%,var(--ink2) 100%);color:var(--paper);position:relative;overflow:hidden}
  .hero::after{content:"";position:absolute;right:-120px;top:-120px;width:460px;height:460px;border-radius:50%;
    background:radial-gradient(circle at center,rgba(166,124,61,.28),transparent 62%)}
  .hero .wrap{position:relative;padding:90px 28px 84px;max-width:1000px}
  .hero .ey{color:#D8B879}
  .hero h1{color:#fff;font-size:60px;font-weight:400;margin:18px 0 8px;letter-spacing:-.01em}
  .hero .sub{font-family:Spectral,serif;font-style:italic;font-size:24px;color:#E7DcC6;font-weight:300}
  .hero .meta{display:flex;flex-wrap:wrap;gap:14px 30px;margin-top:30px;font-size:16px;color:#cdd5e2}
  .hero .meta b{color:#fff;font-weight:600}
  .hero .btns{margin-top:38px;display:flex;gap:14px;flex-wrap:wrap}
  .btn{display:inline-block;padding:14px 26px;border-radius:5px;font-weight:600;font-size:14px;text-decoration:none}
  .btn-gold{background:var(--gold);color:#fff}
  .btn-gold:hover{background:var(--gold2)}
  .btn-ghost{border:1px solid rgba(255,255,255,.4);color:#fff}
  .btn-ghost:hover{background:rgba(255,255,255,.1)}
  @media(max-width:640px){.hero h1{font-size:40px}}

  /* SECTION */
  section{padding:78px 0}
  section.alt{background:var(--cream)}
  .shead{max-width:760px;margin-bottom:40px}
  .shead h2{font-size:36px;margin-top:10px}
  .lead{font-size:18px;color:var(--mute);margin-top:14px}

  /* ABOUT */
  .prose p{font-size:17px;color:var(--ink2);max-width:780px;margin-bottom:16px}

  /* KEYNOTES */
  .grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
  @media(max-width:820px){.grid3{grid-template-columns:1fr}}
  .kcard{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:28px;text-align:center}
  .kmono{width:74px;height:74px;border-radius:50%;margin:0 auto 16px;background:var(--ink);color:#D8B879;
    display:flex;align-items:center;justify-content:center;font-family:Spectral,serif;font-size:26px}
  .kcard h3{font-size:22px}
  .kcard .aff{font-size:14px;color:var(--mute);margin-top:6px}
  .kcard .tag{margin-top:12px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);font-weight:600}

  /* DATES timeline */
  .dates{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
  @media(max-width:820px){.dates{grid-template-columns:1fr 1fr}}
  .dcell{padding:24px;border-left:2px solid var(--line)}
  .dcell:first-child{border-left:none}
  @media(max-width:820px){.dcell{border-left:none;border-top:1px solid var(--line)}}
  .dcell .d{font-family:Spectral,serif;font-size:22px;color:var(--gold)}
  .dcell .l{font-size:14px;color:var(--ink2);margin-top:6px}

  /* REG cards */
  .grid2{display:grid;grid-template-columns:1fr 1fr;gap:24px}
  @media(max-width:820px){.grid2{grid-template-columns:1fr}}
  .card{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:30px}
  .card h3{font-size:22px;margin-bottom:12px}
  .card ul{list-style:none;font-size:16px;color:var(--ink2)}
  .card li{padding:7px 0 7px 22px;position:relative;border-bottom:1px dotted var(--line)}
  .card li:last-child{border-bottom:none}
  .card li::before{content:"—";position:absolute;left:0;color:var(--gold)}

  /* COMMITTEES */
  .com{display:grid;grid-template-columns:1fr 1fr;gap:40px}
  @media(max-width:820px){.com{grid-template-columns:1fr}}
  .com h3{font-size:24px;padding-bottom:12px;border-bottom:2px solid var(--gold);display:inline-block;margin-bottom:18px}
  .com ul{list-style:none}
  .com li{padding:11px 0;border-bottom:1px solid var(--line);font-size:16px}
  .com li b{font-weight:600;color:var(--ink)}
  .com li span{display:block;font-size:14px;color:var(--mute);margin-top:2px}

  /* VENUE */
  .venue{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
  @media(max-width:820px){.venue{grid-template-columns:1fr}}
  .vmap{width:100%;aspect-ratio:4/3;border:1px solid var(--line);border-radius:10px;display:block;overflow:hidden}

  /* FOOTER */
  footer{background:var(--ink);color:#c8d0de;padding:54px 0 30px}
  footer .top{display:flex;justify-content:space-between;flex-wrap:wrap;gap:24px;border-bottom:1px solid rgba(255,255,255,.12);padding-bottom:26px}
  footer .brand{color:#fff}
  footer a{color:#D8B879;text-decoration:none}
  footer .bottom{margin-top:22px;font-size:13px;color:#8b96a8}

  /* logolar */
  .brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none}
  .brandlogo{height:36px;width:auto;display:block}
  .partners{background:var(--white);border-top:1px solid var(--line);padding:46px 0}
  .partners .ptitle{text-align:center;margin-bottom:26px}
  .plogos{display:flex;align-items:center;justify-content:center;gap:54px;flex-wrap:wrap}
  .plogos img{height:58px;width:auto;object-fit:contain}
  .plogos .wordmark{height:42px}
  @media(max-width:640px){.plogos{gap:30px}.plogos img{height:46px}.plogos .wordmark{height:34px}}

/* TRAVEL sayfası */
.pagehead{background:linear-gradient(160deg,var(--ink) 0%,var(--ink2) 100%);color:var(--paper);padding:64px 0 54px}
.pagehead .ey{color:#D8B879}
.pagehead h1{color:#fff;font-size:46px;margin-top:12px}
@media(max-width:640px){.pagehead h1{font-size:34px}}
.subh{font-size:20px;color:var(--ink);margin:6px 0 16px}
.opt{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:22px 24px;margin-bottom:16px}
.opt h4{font-size:17px;color:var(--gold);margin-bottom:8px;font-family:Inter,sans-serif;font-weight:600;letter-spacing:.02em}
.opt p{font-size:16px;color:var(--ink2);margin:0}
.note{background:var(--cream);border-left:3px solid var(--gold);padding:16px 20px;border-radius:6px;font-size:15px;color:var(--ink2);margin-top:8px}
.hotels{columns:2;column-gap:34px;list-style:none;font-size:16px;color:var(--ink2);margin-top:8px}
@media(max-width:640px){.hotels{columns:1}}
.hotels li{padding:6px 0 6px 20px;position:relative;break-inside:avoid}
.hotels li::before{content:"—";position:absolute;left:0;color:var(--gold)}

/* REGISTER formu */
.forml{max-width:760px}
.field{margin-bottom:24px}
.field .q{display:block;font-weight:600;color:var(--ink);margin-bottom:6px;font-size:16px}
.field .q .req{color:#b3402e}
.field .hint{font-size:14px;color:var(--mute);margin:2px 0 10px}
.field input[type=text],.field input[type=email],.field textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:8px;font-size:16px;font-family:inherit;background:#fff;color:var(--ink)}
.field textarea{min-height:90px;resize:vertical}
.opts label{display:flex;gap:10px;align-items:flex-start;padding:9px 0;font-size:16px;color:var(--ink2);cursor:pointer}
.opts input{margin-top:5px;accent-color:var(--gold)}
.formbox{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:30px}
.bankbox{background:var(--cream);border-radius:10px;padding:20px 24px;font-size:15px;color:var(--ink2);line-height:1.7}
.bankbox b{color:var(--ink)}
.bankbox table{border-collapse:collapse;margin-top:6px}
.bankbox td{padding:3px 14px 3px 0;vertical-align:top}
.feegrid{display:flex;gap:18px;flex-wrap:wrap;margin:14px 0}
.feepill{background:var(--white);border:1px solid var(--line);border-radius:10px;padding:14px 20px;font-size:15px}
.feepill b{color:var(--gold);font-size:18px;display:block}
.reg-submit{background:var(--gold);color:#fff;border:none;padding:15px 34px;border-radius:6px;font-size:15px;font-weight:600;cursor:pointer}
.reg-submit:hover{background:var(--gold2)}
.reqnote{font-size:13px;color:var(--mute);margin-bottom:18px}