/* ICSync alt sayfalar (demo, blog) ortak stil */
:root{--cyan:#22D3EE;--blue:#1E40AF;--bg:#0A1228;--card:#121E3A;--line:#25324D;--txt:#EAF1FB;--slate:#9FB0C9;--muted:#7C8DA8;--grad:linear-gradient(120deg,#22D3EE,#1E40AF)}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;background:var(--bg)}
body{font-family:'Inter',system-ui,sans-serif;background:var(--bg);color:var(--txt);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--cyan);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:1100px;margin:0 auto;padding:0 22px}
.narrow{max-width:780px}
header{position:sticky;top:0;z-index:10;backdrop-filter:saturate(180%) blur(12px);background:rgba(10,18,40,.86);border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:19px;color:var(--txt)}
.brand:hover{text-decoration:none}
.brand img{width:30px;height:30px;border-radius:8px}
.brand b{color:var(--cyan);font-weight:700}
.subnav{display:flex;align-items:center;gap:22px}
.subnav a{color:var(--slate);font-size:14.5px;font-weight:500}
.subnav a:hover{color:var(--txt);text-decoration:none}
.subnav a.on{color:var(--txt)}
.lang{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px;background:var(--card)}
.lang a,.lang button{border:0;background:transparent;color:var(--slate);font-weight:600;font-size:13px;padding:6px 13px;border-radius:999px;cursor:pointer;font-family:inherit}
.lang a:hover{text-decoration:none}
.lang .active{background:var(--grad);color:#fff}
.btn{display:inline-block;padding:12px 24px;border-radius:999px;font-weight:600;font-size:15px;cursor:pointer;border:0;white-space:nowrap;color:#fff;background:var(--grad);box-shadow:0 8px 24px -8px rgba(34,211,238,.55);transition:transform .15s;font-family:inherit}
.btn:hover{transform:translateY(-2px);text-decoration:none}
.btn-ghost{background:var(--card);border:1px solid var(--line);color:var(--txt);box-shadow:none}
.eyebrow{font-weight:600;font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--cyan);margin-bottom:12px}
main{padding:56px 0 90px}
h1{font-size:clamp(30px,5vw,46px);letter-spacing:-.02em;line-height:1.1;margin-bottom:14px}
h2{font-size:clamp(20px,3vw,26px);letter-spacing:-.01em;margin:38px 0 12px}
h3{font-size:18px;margin:26px 0 8px}
p,li{color:#CBD5E8}
.lead{font-size:18px;color:var(--slate);max-width:640px}
ul,ol{margin:8px 0 14px 22px}
li{margin-bottom:6px}
.note{margin-top:14px;padding:14px 16px;background:var(--card);border:1px solid var(--line);border-left:3px solid var(--cyan);border-radius:10px;color:var(--slate);font-size:14.5px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.checks{list-style:none;margin:22px 0 0}
.checks li{position:relative;padding-left:30px;margin-bottom:12px}
.checks li:before{content:"";position:absolute;left:0;top:7px;width:18px;height:18px;border-radius:50%;background:var(--grad)}
.checks li:after{content:"";position:absolute;left:6px;top:11px;width:6px;height:9px;border:solid #fff;border-width:0 2px 2px 0;transform:rotate(45deg)}
.steps{counter-reset:s;list-style:none;margin:16px 0 0}
.steps li{counter-increment:s;position:relative;padding-left:40px;margin-bottom:14px}
.steps li:before{content:counter(s);position:absolute;left:0;top:0;width:28px;height:28px;border-radius:50%;background:var(--card);border:1px solid var(--cyan);color:var(--cyan);font-weight:700;font-size:13px;display:grid;place-items:center}
/* form */
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--slate);margin-bottom:6px}
.field input,.field select,.field textarea{width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:10px;font-family:inherit;font-size:14.5px;color:var(--txt);background:#0E1830;transition:border-color .2s,box-shadow .2s}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--cyan);box-shadow:0 0 0 3px rgba(34,211,238,.16)}
.field textarea{resize:vertical;min-height:96px}
.field select option{background:#0E1830}
.form .btn{width:100%;margin-top:6px}
.form .fine{text-align:center;margin-top:14px;font-size:13px;color:var(--muted)}
.ok-msg{display:none;margin-top:18px;text-align:center;padding:18px 22px;background:rgba(34,211,238,.08);border:1px solid rgba(34,211,238,.35);border-radius:14px;color:var(--cyan);font-weight:600}
.ok-msg.show{display:block}
/* blog */
.posts{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:22px;margin-top:34px}
.post{display:flex;flex-direction:column;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:24px;color:var(--txt);transition:border-color .2s,transform .2s}
.post:hover{border-color:var(--cyan);transform:translateY(-3px);text-decoration:none}
.post .tag{font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--cyan)}
.post h2{margin:0;font-size:20px}
.post p{font-size:14.5px;color:var(--slate)}
.post .meta{margin-top:auto;font-size:13px;color:var(--muted)}
.article{max-width:760px;margin:0 auto}
.article .meta{color:var(--muted);font-size:14px;margin-bottom:34px}
.article p{margin-bottom:16px;font-size:16.5px}
.article h2{margin-top:42px}
.article table{width:100%;border-collapse:collapse;margin:14px 0 22px;font-size:15px}
.article th,.article td{text-align:left;padding:10px 12px;border-bottom:1px solid var(--line);color:#CBD5E8}
.article th{color:var(--txt);font-weight:600}
.formula{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 18px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:15px;color:var(--cyan);margin:12px 0 18px;overflow-x:auto}
.cta-box{margin-top:50px;padding:30px;border-radius:18px;background:linear-gradient(135deg,rgba(34,211,238,.12),rgba(30,64,175,.18));border:1px solid rgba(34,211,238,.3);text-align:center}
.cta-box h3{margin:0 0 8px;font-size:22px}
.cta-box p{margin-bottom:18px;color:var(--slate)}
.back{display:inline-block;margin-top:40px;color:var(--cyan);font-weight:600}
footer{border-top:1px solid var(--line);padding:26px 0;color:var(--slate);font-size:14px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
[data-lang-block]{display:none}
[data-lang-block].show{display:block}
@media(max-width:820px){.grid2{grid-template-columns:1fr;gap:28px}.subnav{display:none}.form-row{grid-template-columns:1fr}main{padding:40px 0 70px}}