:root{--ink:#14202e;--ink2:#45546a;--bg:#eef1f4;--card:#fff;--line:#d5dbe2;--navy:#10243e;--amber:#ffb300;--blue:#1f5fbf}
*{box-sizing:border-box}
html{scroll-padding-top:110px}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
img{display:block;max-width:100%;height:auto}
svg{display:block;max-width:100%;height:auto}
a{color:var(--blue);text-underline-offset:.2em}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
.site-header :focus-visible,.hero :focus-visible{outline-color:var(--amber)}
.wrap{width:min(1120px,100% - 40px);margin:0 auto}
h1,h2,h3{line-height:1.15;margin:0;letter-spacing:-.01em;overflow-wrap:break-word}
h1{font-size:clamp(34px,4.6vw,54px);max-width:23ch}
h2{font-size:clamp(26px,3vw,34px);margin-bottom:12px}
h3{font-size:20px}
p{margin:0 0 14px}
.measure{max-width:66ch;color:var(--ink2)}
section{padding:64px 0}
.compact{padding-top:0}
.skip-link{position:fixed;top:8px;left:8px;z-index:20;background:var(--amber);color:var(--navy);padding:10px 16px;transform:translateY(-160%);font-weight:700}
.skip-link:focus{transform:translateY(0)}
.site-header{position:sticky;top:0;z-index:10;background:var(--navy);border-bottom:1px solid #29405d}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:80px;padding-top:12px;padding-bottom:12px}
.brand{display:block;width:250px;flex-shrink:0}
.brand[aria-current=page]{border-bottom:2px solid var(--amber);padding-bottom:5px}
nav{display:flex;flex-wrap:wrap;gap:4px 8px}
nav a{display:block;color:#fff;text-decoration:none;padding:9px 12px;border-radius:5px;font-size:15px;font-weight:600}
nav a:hover{background:#22385a}
nav a[aria-current=page]{background:var(--amber);color:var(--navy)}
.hero{position:relative;min-height:710px;display:flex;align-items:flex-end;color:#fff;background:#0f1a28 url('/img/room1.jpg') center/cover no-repeat}
.hero:before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,18,30,.12) 0%,rgba(10,18,30,.6) 35%,rgba(10,18,30,.96) 100%)}
.hero .wrap{position:relative}
.hero h1,.hero p{text-shadow:0 1px 12px rgba(0,0,0,.35)}
.hero h1{font-size:clamp(36px,5.6vw,64px);font-weight:800;max-width:17ch}
.hero p{font-size:clamp(17px,1.5vw,20px);color:#e1e9f2;max-width:62ch;margin:18px 0 0}
.hero .facts{font-size:15px;color:#d0dce9}
.mark{width:240px;margin-bottom:20px}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.button{display:inline-block;border:2px solid var(--amber);border-radius:5px;background:var(--amber);color:var(--navy);font-size:16px;line-height:1.4;font-weight:700;text-decoration:none;padding:12px 19px;text-align:center}
.button:hover{background:#ffc233;border-color:#ffc233;text-decoration:underline}
.button.secondary{background:transparent;color:#fff;border-color:#b8c7db}
.button.secondary:hover{background:var(--navy)}
.intro{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center}
.intro>*{min-width:0}
.shot{border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.shot img{width:100%}
.eyebrow{color:var(--blue);font-size:14px;font-weight:700;margin-bottom:12px}
.text-link{font-weight:600}
.page-heading{padding-bottom:40px}
.page-heading h1{margin-bottom:20px}
.section-links{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:22px}
.jump a{font-size:14px;font-weight:600;padding:5px 12px;border:1px solid var(--line);border-radius:999px;background:var(--card)}
.lab-h{font-size:24px;margin-top:44px;scroll-margin-top:84px}
.lab-h span{font-size:15px;font-weight:600;color:var(--blue);margin-left:8px}
#ortaokul,#lise{scroll-margin-top:72px}
.values{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:28px}
.values article{padding:26px;background:var(--card);border:1px solid var(--line);border-radius:10px}
.values h3{margin-bottom:14px}
.values p{font-size:16px;color:var(--ink2)}
.values a{font-size:15px}
.value-number{display:inline-block;color:var(--navy);background:var(--amber);padding:2px 9px;border-radius:4px;font-size:14px;font-weight:800;margin-bottom:18px}
.video-placeholder{position:relative;aspect-ratio:16/9;background:var(--navy);border-radius:10px;overflow:hidden;border:1px solid var(--line);margin-top:24px}
.video-placeholder>img{width:100%;height:100%;object-fit:cover}
.video-label{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:rgba(8,20,36,.6);color:#fff;text-align:center;padding:20px}
.video-label strong{font-size:clamp(18px,3vw,28px)}
.play-symbol{display:grid;place-items:center;width:64px;height:64px;border:2px solid var(--amber);border-radius:50%;color:var(--amber);font-size:25px;padding-left:4px}
.section-heading{display:flex;align-items:baseline;justify-content:space-between;gap:18px;flex-wrap:wrap}
.station-strip{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:20px}
.preview{display:block;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--card);text-decoration:none}
.preview img{width:100%;aspect-ratio:16/9;object-fit:cover}
.preview span{display:block;padding:12px 14px;font-size:15px;font-weight:600}
.preview:hover span{text-decoration:underline}
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 24px;margin-top:28px}
.st{background:var(--card);border-radius:10px;overflow:hidden;border:1px solid var(--line)}
.st .im{position:relative;aspect-ratio:16/9;background:var(--navy)}
.st .im img{width:100%;height:100%;object-fit:cover}
.st .n{position:absolute;left:12px;top:12px;width:34px;height:34px;border-radius:50%;background:var(--amber);color:var(--navy);font-weight:800;display:grid;place-items:center}
.st .tx{padding:16px 20px 18px}
.st h3{font-size:20px}
.st .meta{color:var(--blue);font-size:14px;font-weight:600;margin:5px 0 10px}
.st p{color:var(--ink2);font-size:15.5px;margin-bottom:10px}
.st .unit{font-size:13px}
.st .codes{font-size:13px;color:#526176;overflow-wrap:anywhere}
.micro{background:var(--navy);color:#fff}
.micro .measure{color:#d0dce9}
.mstrip{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:22px;margin-top:28px}
.mstrip figure{margin:0}
.mstrip img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:50%;box-shadow:0 0 0 3px #22385a}
.mstrip figcaption{font-size:14px;color:#d0dce9;margin-top:10px;text-align:center}
.table-scroll{overflow-x:auto;max-width:100%;margin-top:22px;border:1px solid var(--line);border-radius:6px}
table{width:100%;min-width:720px;border-collapse:collapse;background:var(--card);font-size:15px}
caption{text-align:left;padding:12px 14px;font-weight:600;background:var(--card);font-size:14px;color:var(--ink2)}
th,td{padding:11px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead th{background:var(--navy);color:#fff;font-weight:600;font-size:14px}
tbody th{font-weight:600;min-width:190px}
td.c{text-align:center;width:55px;font-weight:700;color:var(--blue)}
td.c.no{color:#526176;font-weight:400}
.src{font-size:13.5px;color:#526176;margin-top:12px}
.use{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
ol.how{padding-left:1.5em;margin:0}
ol.how li{margin-bottom:20px;color:var(--ink2);padding-left:6px}
ol.how li::marker{font-weight:800;color:var(--blue)}
ol.how li b{color:var(--ink)}
kbd{font:600 13px system-ui,sans-serif;border:1px solid #9aa6b5;border-bottom-width:2px;border-radius:4px;padding:0 5px;background:#fff;color:var(--ink)}
.panel{padding:32px 36px;background:var(--card);border:1px solid var(--line);border-radius:10px}
.notes{margin:18px 0 0;padding-left:1.25em;color:var(--ink2);max-width:72ch}
.notes li{margin-bottom:12px}
.notes li:last-child{margin-bottom:0}
.contact{background:var(--card);border:1px solid var(--line);border-radius:10px;padding:32px 36px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center}
.contact .button{justify-self:start}
.contact p:last-child{margin-bottom:0}
.contact-page{display:block}
.email{font-size:clamp(18px,3vw,26px);font-weight:600;overflow-wrap:anywhere}
.download{font-weight:600}
.file-size{display:inline-block;margin-left:12px;color:var(--ink2);font-size:14px}
.error-page{min-height:55vh}
footer{padding:28px 0 38px;color:#526176;font-size:13px;border-top:1px solid var(--line);margin-top:32px}
footer p{max-width:105ch}
@media(max-width:860px){
  .intro,.use,.contact{grid-template-columns:1fr;gap:26px}
  .values{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr}
  .mstrip{grid-template-columns:repeat(3,minmax(0,1fr))}
  section{padding:44px 0}
  .compact{padding-top:0}
  .hero{min-height:660px}
  .page-heading{padding-bottom:32px}
  .nav-wrap{flex-wrap:wrap;gap:10px}
  .brand{width:190px}
  nav a{padding:8px 10px}
}
@media(max-width:600px){
  html{scroll-padding-top:160px}
  .wrap{width:calc(100% - 32px)}
  .nav-wrap{justify-content:flex-start;padding-top:12px;padding-bottom:10px}
  nav{width:100%;gap:4px}
  nav a{font-size:13px;padding:8px 9px}
  .hero{min-height:0;padding-top:110px}
  .mark{width:190px}
  .hero h1{font-size:38px}
  .station-strip{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
  .preview span{font-size:13px;padding:10px}
  .mstrip{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .panel,.contact{padding:24px}
  .file-size{display:block;margin-left:0;margin-top:4px}
}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto}}
@media print{.site-header,.skip-link,.actions{display:none}.hero{min-height:auto;padding-top:80px}section{padding:24px 0}.st,tr,figure{break-inside:avoid}.table-scroll{overflow:visible}table{min-width:0}footer{margin-top:0}}
/* talep formu */
.request{display:grid;gap:16px;max-width:760px;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:28px}
.request .row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.request label{display:grid;gap:6px;font-weight:600;font-size:15px}
.request input,.request select,.request textarea{font:inherit;font-weight:400;padding:10px 12px;border:1px solid #b5c0cd;border-radius:6px;background:#fff;color:var(--ink);width:100%}
.request textarea{resize:vertical}
.request .opt{font-weight:400;color:var(--ink2)}
.request .check{display:flex;gap:10px;align-items:flex-start;font-weight:400;color:var(--ink2)}
.request .check input{width:auto;margin-top:5px}
.request .button{justify-self:start;cursor:pointer}
.request .hp{position:absolute;left:-9999px}
.notice{display:none;max-width:760px;padding:14px 18px;border-radius:8px;font-weight:600}
.notice:target{display:block}
.notice.ok{background:#e3f4e8;border:1px solid #9fd3ad;color:#17552b}
.notice.err{background:#fde8e6;border:1px solid #f0aaa3;color:#8a1d12}
@media (max-width:640px){.request{padding:20px}.request .row{grid-template-columns:1fr}}
.request label{display:block}
.request label>input,.request label>select,.request label>textarea{display:block;margin-top:6px}
.request .check{display:flex}
.notice{scroll-margin-top:110px}
#gonderildi:target~form{display:none}
/* ana sayfa: en üstte kendiliğinden oynayan film */
.film{position:relative;background:#0e2341;line-height:0;padding:0}
.film video{display:block;width:100%;aspect-ratio:16/9;max-height:calc(100vh - 106px);object-fit:cover;background:#0e2341;cursor:pointer}
.sound{position:absolute;right:16px;bottom:16px;line-height:1.2;font:inherit;font-size:15px;font-weight:700;color:#fff;background:rgba(14,35,65,.78);border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:9px 16px;cursor:pointer;backdrop-filter:blur(4px)}
.sound:hover{background:rgba(14,35,65,.95)}
.sound:focus-visible{outline:3px solid var(--amber);outline-offset:3px}
.hero-plain{min-height:0;background:var(--navy);padding:56px 0 64px}
.hero-plain:before{display:none}