/* İstanbul Kamera Sistemleri — "güvenlik monitörü" tasarımı. Elle düzenlenir; build.py ?v= ekler. */
:root{--black:#0a0b0d;--ink:#111316;--ink2:#1a1d22;--paper:#eef0ec;--card:#fff;--text:#14171b;--muted:#596069;--line:#d9ddd6;--dline:#2a2e35;
--acc:#ef4444;--acc-d:#b91c1c;--acc-l:#fee2e2;--rec:#ff2d2d;--night:#9be7a6;--r:6px;--max:1180px;
--fd:"Chakra Petch",system-ui,sans-serif;--fb:"Instrument Sans",system-ui,sans-serif;--fm:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--text);font:400 17px/1.65 var(--fb);overflow-x:hidden}
img,svg{max-width:100%}
a{color:var(--acc-d);text-underline-offset:3px}
h1,h2,h3{font-family:var(--fd);line-height:1.08;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(2.1rem,5.4vw,3.9rem);font-weight:700;text-transform:uppercase}
h2{font-size:clamp(1.55rem,3.4vw,2.4rem);font-weight:700}
h3{font-size:1.18rem;font-weight:700}
p{margin:0 0 1em}
.wrap{max-width:var(--max);margin:0 auto;padding:0 20px}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;z-index:99;background:#fff;padding:8px 12px}
.i{width:1.15em;height:1.15em;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round;vertical-align:-.2em;flex:none}
.muted{color:var(--muted)}
.mt0{margin-top:0}
.mono{font-family:var(--fm);letter-spacing:.02em}

/* üst bar: REC şeridi */
.top{position:sticky;top:0;z-index:50;background:var(--black);color:#fff;border-bottom:3px solid var(--acc)}
.top .wrap{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;min-width:0}
.brand svg{width:40px;height:40px;flex:none}
.brand b{font:700 1.05rem/1 var(--fd);display:block;text-transform:uppercase;letter-spacing:.02em}
.brand small{display:flex;align-items:center;gap:6px;color:#9aa1ab;font:600 .7rem/1 var(--fm);margin-top:5px;white-space:nowrap;overflow:hidden}
.brand small::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--rec);animation:rec 1.2s steps(1) infinite;flex:none}
@keyframes rec{50%{opacity:.15}}
.nav{margin-left:auto;display:flex;align-items:center;gap:2px}
.nav a{color:#cdd2d9;text-decoration:none;padding:8px 11px;font-weight:600;font-size:.95rem;border-radius:4px}
.nav a:hover,.nav a[aria-current]{color:#fff;background:#1f232a}
.nav .call{background:var(--acc);color:#fff;margin-left:8px}
.nav .call:hover{background:#fff;color:var(--black)}
.menu-btn{display:none;margin-left:auto;background:none;border:1px solid var(--dline);color:#fff;border-radius:6px;padding:8px;cursor:pointer}
@media (max-width:920px){
 .menu-btn{display:block}
 .nav{display:none;position:absolute;left:0;right:0;top:64px;background:var(--black);flex-direction:column;align-items:stretch;padding:10px 16px 18px;border-bottom:3px solid var(--acc)}
 .nav.open{display:flex}
 .nav a{padding:12px}
 .nav .call{margin:8px 0 0;text-align:center}
}

/* butonlar */
.btns{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 20px;border-radius:var(--r);font:700 1rem/1.1 var(--fb);text-decoration:none;border:2px solid transparent;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn.call{background:var(--acc);color:#fff}
.btn.wa{background:#25d366;color:#05230f}
.btn.dark{background:var(--black);color:#fff}
.btn.ghost{border-color:currentColor;color:inherit}
@media (max-width:480px){.btns .btn{flex:1 1 100%}}

/* hero */
.hero{background:var(--ink);color:#e7eaee;padding:44px 0 60px;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(255,255,255,.025) 0 1px,transparent 1px 4px);pointer-events:none}
.hero .wrap{position:relative;z-index:1}
.hero h1 em{font-style:normal;color:var(--acc)}
.hero .lead{font-size:1.13rem;color:#bcc3cc;max-width:640px}
.hero .grid{display:grid;grid-template-columns:1.1fr .9fr;gap:44px;align-items:center}
@media (max-width:900px){.hero .grid{grid-template-columns:1fr;gap:30px}}
.kicker{display:inline-flex;align-items:center;gap:8px;font:700 .78rem/1 var(--fm);letter-spacing:.08em;text-transform:uppercase;color:#fff;background:var(--acc);padding:8px 11px;border-radius:3px;margin-bottom:18px}
.crumbs{font-size:.86rem;color:#8e96a1;margin-bottom:22px}
.crumbs a{color:#c3c9d1}
.hero-b h1{max-width:960px}
.hero-c .big{font:700 clamp(4.6rem,15vw,10rem)/.85 var(--fd);color:transparent;-webkit-text-stroke:2px var(--acc);word-break:break-word}
.hero-c .grid{grid-template-columns:auto 1fr}
@media (max-width:900px){.hero-c .grid{grid-template-columns:1fr}}

/* monitör: 4'lü kamera ekranı */
.mon{background:#050607;border:10px solid #1d2026;border-radius:10px;box-shadow:0 30px 60px rgba(0,0,0,.45);max-width:480px;width:100%;margin:0 auto}
.mon .gridv{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px}
.mon .cam{position:relative;aspect-ratio:16/10;background:#0b1410;overflow:hidden}
.mon .cam svg{position:absolute;inset:0;width:100%;height:100%}
.mon .cam::after{content:"";position:absolute;inset:0;background:repeating-linear-gradient(0deg,rgba(0,0,0,.25) 0 1px,transparent 1px 3px);pointer-events:none}
.mon .lbl{position:absolute;left:6px;top:5px;font:700 .62rem/1 var(--fm);color:#d7ffe0;z-index:2;text-shadow:0 1px 2px #000}
.mon .ts{position:absolute;right:6px;bottom:5px;font:600 .58rem/1 var(--fm);color:#d7ffe0;z-index:2;text-shadow:0 1px 2px #000}
.mon .rec{position:absolute;right:6px;top:5px;font:700 .6rem/1 var(--fm);color:#fff;z-index:2;display:flex;align-items:center;gap:4px}
.mon .rec::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--rec);animation:rec 1.2s steps(1) infinite}
.mon .bar{display:flex;justify-content:space-between;align-items:center;padding:7px 10px;font:700 .68rem/1 var(--fm);color:#8e96a1;border-top:1px solid #1d2026}
.mon .bar b{color:var(--acc)}
.mon-stand{width:30%;height:12px;margin:0 auto;background:#1d2026;border-radius:0 0 8px 8px}
@media (prefers-reduced-motion:reduce){.mon .rec::before,.brand small::before{animation:none}}

/* bölümler */
section{padding:70px 0}
.band-dark{background:var(--ink);color:#dfe3e8}
.band-dark .muted{color:#98a0aa}
.band-dark a{color:#fff}
.band-white{background:#fff}
.band-acc{background:var(--acc);color:#fff}
.band-acc a{color:#fff}
.eyebrow{display:inline-block;font:700 .78rem/1 var(--fm);letter-spacing:.12em;text-transform:uppercase;color:var(--acc-d);margin-bottom:14px}
.eyebrow::before{content:"● ";color:var(--rec)}
.band-dark .eyebrow{color:#fff}
.split{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.split>*{min-width:0}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:20px}}
.grid2,.grid3,.grid4{display:grid;gap:18px}
.grid2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:980px){.grid4,.grid3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:620px){.grid2,.grid3,.grid4{grid-template-columns:1fr}}

/* vizör köşeli kartlar */
.card{background:var(--card);padding:24px;position:relative;border:1px solid var(--line);border-radius:var(--r);
 background-image:linear-gradient(var(--acc),var(--acc)),linear-gradient(var(--acc),var(--acc)),linear-gradient(var(--acc),var(--acc)),linear-gradient(var(--acc),var(--acc));
 background-size:18px 3px,3px 18px,18px 3px,3px 18px;background-position:0 0,0 0,100% 100%,100% 100%;background-repeat:no-repeat}
.band-dark .card{background-color:var(--ink2);border-color:var(--dline)}
a.card{text-decoration:none;color:inherit;display:block;transition:transform .15s,box-shadow .15s}
a.card:hover{transform:translateY(-3px);box-shadow:0 12px 28px -14px rgba(0,0,0,.35)}
.card .ic{display:inline-grid;place-items:center;width:46px;height:46px;border-radius:6px;background:var(--black);color:#fff;margin-bottom:14px}
.card .ic .i{width:24px;height:24px}
.card p{color:var(--muted);margin:0}
.band-dark .card p{color:#a5adb7}
.more{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font-weight:700;color:var(--acc-d)}
.band-dark .more{color:#fff}
.card .num{font:700 .82rem/1 var(--fm);color:var(--acc-d);display:block;margin-bottom:10px;letter-spacing:.06em}
.band-dark .card .num{color:var(--acc)}
.checks{list-style:none;padding:0;margin:0}
.checks li{display:flex;gap:10px;padding:9px 0;border-bottom:1px solid var(--line)}
.band-dark .checks li{border-color:var(--dline)}
.checks .i{color:var(--acc-d);margin-top:4px}
.band-dark .checks .i{color:var(--acc)}
.note{background:var(--acc-l);border-left:5px solid var(--acc);border-radius:0 var(--r) var(--r) 0;padding:18px 20px;margin-top:18px}
.warn{background:#fff8e1;border:1px solid #efd48a;border-radius:var(--r);padding:16px 18px;font-size:.95rem;color:#584108}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chips a,.chips span{display:inline-block;padding:7px 12px;border-radius:3px;background:#fff;border:1px solid var(--line);color:var(--text);text-decoration:none;font-size:.93rem;font-weight:600}
.chips a:hover{border-color:var(--acc);color:var(--acc-d)}
.band-dark .chips a,.band-dark .chips span{background:var(--ink2);border-color:var(--dline);color:#e3e7ec}
.tag{display:inline-block;font:700 .72rem/1 var(--fm);letter-spacing:.06em;text-transform:uppercase;padding:6px 8px;border-radius:3px;background:var(--black);color:#fff;margin-bottom:12px}
.spec{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--dline);border:1px solid var(--dline);border-radius:var(--r);overflow:hidden}
.spec div{background:var(--ink2);padding:18px}
.spec b{display:block;font:700 1.6rem/1 var(--fd);color:#fff;margin-bottom:6px}
.spec span{color:#a5adb7;font-size:.9rem}
@media (max-width:760px){.spec{grid-template-columns:repeat(2,minmax(0,1fr))}}
.steps{counter-reset:s;list-style:none;padding:0;margin:0;display:grid;gap:12px}
.steps li{counter-increment:s;display:grid;grid-template-columns:56px 1fr;gap:14px;align-items:start;background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 18px}
.steps li::before{content:"CAM" counter(s,decimal-leading-zero);font:700 .8rem/1.6 var(--fm);color:var(--acc-d)}
.quote-big{font:700 clamp(1.5rem,3vw,2.2rem)/1.15 var(--fd)}
.prose{max-width:780px;overflow-wrap:break-word}
.prose h2{margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.2em}
.prose li{margin:.35em 0}
.tblwrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--r)}
table.tbl{width:100%;border-collapse:collapse;background:#fff;font-size:.95rem}
.tbl th,.tbl td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.tbl th{background:var(--black);color:#fff;font:700 .85rem/1.3 var(--fm);letter-spacing:.03em}

/* SSS */
.faq details{background:#fff;border:1px solid var(--line);border-radius:var(--r);margin-bottom:10px;padding:0 20px}
.faq summary{cursor:pointer;font-weight:700;padding:17px 0;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::after{content:"+";font:700 1.4rem/1 var(--fd);color:var(--acc-d)}
.faq details[open] summary::after{content:"–"}
.faq summary::-webkit-details-marker{display:none}
.faq details p{color:var(--muted);margin:0 0 18px}
.band-dark .faq details{background:var(--ink2);border-color:var(--dline)}
.band-dark .faq details p{color:#a5adb7}
.band-dark .faq summary::after{color:var(--acc)}

.cta .wrap{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap}
.cta h2{margin:0;max-width:720px}
.cta .btns{margin-top:0}

/* keşif kutusu */
.kesif{display:grid;grid-template-columns:1fr auto;gap:24px;align-items:center;background:var(--black);color:#e3e7ec;border-radius:var(--r);padding:28px;border-left:6px solid var(--acc)}
.kesif h3{color:#fff;font-size:1.4rem}
.kesif p{color:#a5adb7;margin:0}
@media (max-width:700px){.kesif{grid-template-columns:1fr}}

footer{background:var(--black);color:#a2a9b3;padding:60px 0 110px;font-size:.95rem;border-top:3px solid var(--acc)}
footer h3{color:#fff;font-size:1rem;text-transform:uppercase;letter-spacing:.04em}
footer a{color:#d1d6dc;text-decoration:none}
footer a:hover{color:#fff;text-decoration:underline}
footer ul{list-style:none;padding:0;margin:0}
footer li{padding:4px 0}
.fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:30px}
@media (max-width:860px){.fgrid{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.fgrid{grid-template-columns:1fr}}
.legal{border-top:1px solid var(--dline);margin-top:36px;padding-top:20px;font-size:.86rem}

.mbar{display:none}
@media (max-width:760px){
 .mbar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:60;box-shadow:0 -6px 20px rgba(0,0,0,.25)}
 .mbar a{display:flex;align-items:center;justify-content:center;gap:8px;padding:15px 8px;font-weight:700;text-decoration:none}
 .mbar .c{background:var(--acc);color:#fff}
 .mbar .w{background:#25d366;color:#05230f}
 section{padding:52px 0}
}
@media (min-width:861px){.rsplit{grid-template-columns:minmax(0,2fr) minmax(0,1fr)}}
.mon .gridv.g4{grid-template-columns:repeat(4,1fr)}
.mon.many .lbl{font-size:.55rem}
.hero-c .big{-webkit-text-stroke-width:2px}