/* ============================================================
   ÜÇGEN MÜHENDİSLİK & İNŞAAT — "Structural Blueprint" system
   Engineering-led: visible grid, truss geometry, mono spec labels.
   Deliberately distinct from the earlier editorial build.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&family=Hanken+Grotesk:wght@300;400;500;600&display=swap');

:root{
  --navy:#031225;        /* base */
  --navy-2:#06182e;      /* lifted band */
  --navy-3:#0a1f38;      /* surface / cards */
  --navy-4:#11293f;
  --ink:#01080f;         /* deepest */
  --steel:#384a5b;       /* brand mid */
  --paper:#eceff4;       /* light section */
  --paper-2:#e1e7ee;

  --accent:#8aa3b8;      /* readable steel on dark */
  --accent-2:#aebfcf;
  --accent-deep:#5d7a93;

  --on-dark:#e9eef4;
  --on-dark-dim:rgba(233,238,244,.56);
  --on-dark-faint:rgba(233,238,244,.30);
  --on-light:#0a1f38;
  --on-light-dim:rgba(10,31,56,.58);

  --grid-line:rgba(233,238,244,.055);
  --grid-line-light:rgba(10,31,56,.06);
  --hair:rgba(233,238,244,.15);
  --hair-strong:rgba(233,238,244,.28);
  --hair-light:rgba(10,31,56,.16);

  --font-display:"Space Grotesk",system-ui,sans-serif;
  --font-mono:"Space Mono","IBM Plex Mono",ui-monospace,monospace;
  --font-body:"Hanken Grotesk",system-ui,sans-serif;

  --gut:clamp(20px,5vw,80px);
  --maxw:1340px;
  --cell:84px;           /* blueprint module */

  --accent-driver:var(--accent);
}

/* ---- Reset ---- */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}
body{
  font-family:var(--font-body);background:var(--navy);color:var(--on-dark);
  line-height:1.55;-webkit-font-smoothing:antialiased;overflow-x:clip;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:none;background:none;color:inherit}
::selection{background:var(--accent);color:var(--navy)}
svg{display:block}

/* ---- Helpers ---- */
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:var(--gut)}
.mono{font-family:var(--font-mono);font-weight:400}
.label{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--accent);display:inline-flex;align-items:center;gap:10px;
}
.label::before{content:"";width:7px;height:7px;border-radius:50%;background:currentColor}
.label--plain::before{display:none}
section{position:relative}

/* dot-grid overlay — kaldırıldı (daha duru zemin) */
.gridbg{display:none}

/* corner registration arcs (soft) */
.ticks{position:absolute;inset:18px;z-index:1;pointer-events:none}
.ticks::before,.ticks::after{content:"";position:absolute;width:22px;height:22px}
.ticks::before{top:0;left:0;border-top:1.5px solid var(--hair);border-left:1.5px solid var(--hair);border-top-left-radius:14px}
.ticks::after{bottom:0;right:0;border-bottom:1.5px solid var(--hair);border-right:1.5px solid var(--hair);border-bottom-right-radius:14px}

/* type */
.display{font-family:var(--font-display);font-weight:700;line-height:.92;letter-spacing:-.02em;text-transform:uppercase}
.h2{font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:-.015em;line-height:.95;
  font-size:clamp(34px,5.4vw,72px)}
.outline-text{color:transparent;-webkit-text-stroke:1.4px var(--accent);text-stroke:1.4px var(--accent)}

/* ============================================================
   Buttons (flat / technical)
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:12px;padding:15px 28px;border-radius:999px;
  font-family:var(--font-mono);font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;font-weight:700;
  transition:transform .3s,background .3s,color .3s,border-color .3s;white-space:nowrap;
}
.btn__a{transition:transform .3s}
.btn:hover .btn__a{transform:translateX(4px)}
.btn--solid{background:var(--accent);color:var(--navy)}
.btn--solid:hover{background:var(--accent-2);transform:translateY(-2px)}
.btn--line{border:1px solid var(--hair-strong);color:var(--on-dark)}
.btn--line:hover{border-color:var(--accent);color:var(--accent)}
.btn--light{border:1px solid var(--hair-light);color:var(--on-light)}
.btn--light:hover{border-color:var(--accent-deep);color:var(--accent-deep)}

/* ============================================================
   Nav (flat technical bar)
   ============================================================ */
.nav{position:fixed;top:0;left:0;right:0;z-index:80;display:flex;align-items:center;justify-content:space-between;
  padding:18px var(--gut);transition:background .4s,backdrop-filter .4s,border-color .4s,padding .4s;
  border-bottom:1px solid transparent}
.nav.scrolled{background:rgba(3,18,37,.86);backdrop-filter:blur(16px) saturate(1.2);border-bottom-color:var(--hair);padding-top:13px;padding-bottom:13px}
.nav__logo img{height:34px;width:auto}
.nav__links{display:flex;gap:30px;align-items:center}
.nav__link{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--on-dark-dim);position:relative;padding:8px 14px;border-radius:999px;transition:color .3s,background .3s}
.nav__link:hover{color:var(--on-dark);background:rgba(233,238,244,.07)}
.nav__right{display:flex;align-items:center;gap:22px}
.nav__burger{display:none;flex-direction:column;gap:5px;padding:6px}
.nav__burger span{width:24px;height:2px;background:var(--on-dark)}

/* ============================================================
   Hero — drawing sheet
   ============================================================ */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:center;
  padding:112px var(--gut) 64px;background:var(--navy);overflow:clip}
.hero__photo{position:absolute;inset:0;z-index:0;opacity:0;transition:opacity .6s}
.hero__photo image-slot{width:100%;height:100%}
.hero__photo::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,rgba(3,18,37,.92) 0%,rgba(3,18,37,.6) 55%,rgba(3,18,37,.85) 100%)}
.hero.hero--photo .hero__photo{opacity:1}
.hero__inner{position:relative;z-index:5;width:100%;max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.hero__eyebrow{margin-bottom:30px}
.hero h1{font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:-.025em;
  font-size:clamp(46px,7.6vw,116px);line-height:.9;color:#fff;margin-bottom:30px}
.hero h1 .ln{display:block}
.hero h1 .ol{color:transparent;-webkit-text-stroke:1.6px var(--accent);text-stroke:1.6px var(--accent)}
.hero__lead{max-width:46ch;color:var(--on-dark-dim);font-size:clamp(15px,1.4vw,18px);line-height:1.7;margin-bottom:34px}
.hero__actions{display:flex;gap:14px;flex-wrap:wrap}

/* truss graphic */
.hero__truss{position:relative;width:100%;aspect-ratio:1/1;max-width:400px;margin-left:auto}
.hero__truss svg{width:100%;height:100%;overflow:visible}
.truss-line{fill:none;stroke:var(--accent);stroke-width:1.2;opacity:.55;stroke-linecap:round;stroke-linejoin:round}
.truss-fill{fill:rgba(138,163,184,.05);stroke:var(--accent);stroke-width:1.4}
.truss-node{fill:var(--navy);stroke:var(--accent);stroke-width:1.4}
.truss-mark{width:64px;height:auto;opacity:.9}
.truss-ann{font-family:var(--font-mono);font-size:10.5px;fill:var(--on-dark-faint);letter-spacing:.08em;text-transform:uppercase}
.truss-dim{font-family:var(--font-mono);font-size:10.5px;fill:var(--accent);letter-spacing:.06em}

/* title block (like a drawing sheet) */
.titleblock{position:absolute;right:var(--gut);bottom:30px;z-index:5;display:grid;grid-template-columns:auto auto auto;
  border:1px solid var(--hair);border-radius:999px;overflow:hidden;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;text-transform:uppercase}
.titleblock div{padding:9px 16px;border-right:1px solid var(--hair);color:var(--on-dark-dim)}
.titleblock div:last-child{border-right:none}
.titleblock b{color:var(--accent);font-weight:700}
.hero__scrollhint{position:absolute;left:var(--gut);bottom:32px;z-index:5;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--on-dark-faint);display:flex;align-items:center;gap:10px}
.hero__scrollhint::after{content:"";width:40px;height:1px;background:linear-gradient(90deg,var(--accent),transparent)}

/* ============================================================
   Spec ticker
   ============================================================ */
.ticker{border-top:1px solid var(--hair);border-bottom:1px solid var(--hair);background:var(--navy-2);overflow:hidden;position:relative;z-index:2}
.ticker__track{display:inline-flex;gap:0;white-space:nowrap;animation:scrollx 30s linear infinite;will-change:transform}
.ticker__track span{font-family:var(--font-mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--on-dark-dim);padding:16px 0;display:inline-flex;align-items:center;gap:28px}
.ticker__track span::after{content:"▲";color:var(--accent);font-size:9px;margin:0 28px}
@keyframes scrollx{to{transform:translateX(-50%)}}
@media (prefers-reduced-motion:reduce){.ticker__track{animation:none}}

/* ============================================================
   Statement / manifesto
   ============================================================ */
.statement{padding:clamp(90px,14vh,170px) 0;position:relative;border-bottom:1px solid var(--hair);overflow:clip}
.statement__grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:clamp(36px,5vw,80px);align-items:start;position:relative;z-index:2}
.statement__num{font-family:var(--font-mono);font-size:13px;letter-spacing:.16em;color:var(--accent);text-transform:uppercase}
.statement__num b{display:block;font-family:var(--font-display);font-size:clamp(80px,12vw,180px);line-height:.8;color:var(--navy-4);font-weight:700;margin-top:18px;-webkit-text-stroke:1px var(--hair-strong);color:transparent}
.statement p{font-family:var(--font-display);font-weight:500;font-size:clamp(24px,3.4vw,46px);line-height:1.22;letter-spacing:-.015em;color:var(--on-dark)}
.statement p .dim{color:var(--on-dark-faint)}
.statement p .acc{color:var(--accent)}
.statement__foot{margin-top:40px;padding-top:26px;border-top:1px solid var(--hair);max-width:60ch;color:var(--on-dark-dim);font-size:16px;line-height:1.7;font-family:var(--font-body)}

/* ============================================================
   Projects — register / index (light "spec sheet")
   ============================================================ */
.register{background:var(--paper);color:var(--on-light);padding:clamp(80px,12vh,150px) 0;position:relative;
  border-radius:clamp(36px,5vw,72px);margin-inline:clamp(8px,1.4vw,22px)}
.register .sechead{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:48px}
.register .sechead .label{color:var(--accent-deep)}
.register .sechead .label::before{background:currentColor}
.register h2{color:var(--on-light)}
.register .sechead small{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--on-light-dim)}
.pindex{display:grid;grid-template-columns:1.25fr .75fr;gap:clamp(30px,4vw,64px);align-items:start}
.pindex__list{display:flex;flex-direction:column;border-top:1px solid var(--hair-light)}
.prow{display:grid;grid-template-columns:88px 64px 1fr auto;gap:18px;align-items:center;border-radius:22px;
  padding:18px;border-bottom:1px solid var(--hair-light);position:relative;transition:padding .35s,background .35s;cursor:pointer}
.prow::before{content:"";position:absolute;left:6px;top:50%;transform:translateY(-50%);height:0;width:4px;border-radius:999px;background:var(--accent-deep);transition:height .35s}
.prow:hover,.prow.active{padding-left:30px;background:rgba(10,31,56,.045)}
.prow:hover::before,.prow.active::before{height:56%}
.prow__code{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--accent-deep)}
.prow__thumb{width:88px;height:66px;border-radius:18px;overflow:hidden;background:var(--navy-3)}
.prow__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.2,1)}
.prow:hover .prow__thumb img,.prow.active .prow__thumb img{transform:scale(1.08)}
.prow__main{display:flex;flex-direction:column;gap:7px}
.prow__name{font-family:var(--font-display);font-weight:700;text-transform:uppercase;font-size:clamp(20px,2.4vw,30px);line-height:1;letter-spacing:-.01em;color:var(--on-light);transition:color .3s}
.prow:hover .prow__name,.prow.active .prow__name{color:var(--accent-deep)}
.prow__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--on-light-dim);display:flex;gap:14px;flex-wrap:wrap}
.prow__meta i{font-style:normal;color:var(--accent-deep)}
.prow__go{font-size:18px;color:var(--on-light-dim);transition:transform .35s,color .35s}
.prow:hover .prow__go,.prow.active .prow__go{color:var(--accent-deep);transform:translateX(4px)}

.pindex__preview{position:sticky;top:104px}
.pv{position:relative;aspect-ratio:4/5;border-radius:32px;overflow:hidden;background:var(--navy-3);border:1px solid var(--hair-light)}
.pv__imgwrap{position:absolute;inset:0}
.pv__imgwrap img{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .5s}
.pv__imgwrap img.show{opacity:1}
.pv__scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(3,18,37,.1),rgba(3,18,37,.78));z-index:2}
.pv__tag{position:absolute;top:16px;left:16px;z-index:3;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark);background:rgba(3,18,37,.6);backdrop-filter:blur(6px);border:1px solid var(--hair);padding:8px 16px;border-radius:999px;display:inline-flex;align-items:center;gap:8px}
.pv__tag .dot{width:7px;height:7px;border-radius:50%;background:var(--accent)}
.pv__meta{position:absolute;left:18px;right:18px;bottom:18px;z-index:3}
.pv__meta .pvname{font-family:var(--font-display);font-weight:700;text-transform:uppercase;font-size:24px;line-height:1;color:#fff;margin-bottom:10px}
.pv__meta .pvspec{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--on-dark-dim);display:flex;flex-wrap:wrap;gap:6px 16px}
.pv__meta .pvspec i{font-style:normal;color:var(--accent)}
.register .foot{margin-top:48px;padding-top:28px;border-top:1px solid var(--hair-light);display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.register .foot p{color:var(--on-light-dim);font-size:15px;max-width:48ch}

/* ============================================================
   Capabilities — index rows
   ============================================================ */
.caps{padding:clamp(90px,13vh,150px) 0;position:relative;border-bottom:1px solid var(--hair)}
.caps .sechead{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:50px;position:relative;z-index:2}
.caps .sechead .h2sub{max-width:38ch;color:var(--on-dark-dim);font-size:16px;line-height:1.6}
.cap-list{position:relative;z-index:2;border-top:1px solid var(--hair)}
.cap{display:grid;grid-template-columns:90px 1.1fr 1.4fr auto;gap:24px;align-items:center;border-radius:24px;
  padding:30px 18px;border-bottom:1px solid var(--hair);position:relative;transition:background .4s,padding .4s}
.cap:hover{padding-left:30px;background:rgba(138,163,184,.06)}
.cap__num{font-family:var(--font-mono);font-size:13px;color:var(--accent);letter-spacing:.08em}
.cap__name{font-family:var(--font-display);font-weight:700;text-transform:uppercase;font-size:clamp(19px,2vw,26px);line-height:1.02;letter-spacing:-.01em;color:var(--on-dark)}
.cap__desc{color:var(--on-dark-dim);font-size:14.5px;line-height:1.55;max-width:42ch}
.cap__go{justify-self:end;color:var(--on-dark-faint);transition:color .4s,transform .4s}
.cap:hover .cap__go{color:var(--accent);transform:translate(3px,-3px)}

/* ============================================================
   Approach — triangle diagram
   ============================================================ */
.approach{background:var(--navy-2);padding:clamp(90px,13vh,160px) 0;position:relative;border-bottom:1px solid var(--hair);overflow:clip}
.approach .sechead{text-align:center;max-width:48ch;margin:0 auto 60px;position:relative;z-index:2}
.approach .sechead .label{justify-content:center}
.approach .sechead p{margin-top:20px;color:var(--on-dark-dim);font-size:16px;line-height:1.65}
.tridia{position:relative;z-index:2;max-width:900px;margin:0 auto;aspect-ratio:1.5/1}
.tridia svg{width:100%;height:100%;overflow:visible}
.tridia .edge{fill:none;stroke:var(--hair-strong);stroke-width:1.2;stroke-linejoin:round;stroke-linecap:round}
.tridia .edge--lit{stroke:var(--accent);stroke-width:1.6}
.tridia .vfill{fill:var(--navy-3);stroke:var(--accent);stroke-width:1.4}
.tridia .center{fill:none;stroke:var(--accent);stroke-width:1;stroke-dasharray:3 5;opacity:.5}
.vtx{position:absolute;width:min(30%,230px);transform:translate(-50%,-50%);text-align:center}
.vtx__k{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.vtx__t{font-family:var(--font-display);font-weight:700;text-transform:uppercase;font-size:clamp(17px,1.9vw,24px);color:var(--on-dark);line-height:1;margin-bottom:10px}
.vtx__d{font-size:13px;line-height:1.5;color:var(--on-dark-dim)}
.tri-core{position:absolute;left:50%;top:58%;transform:translate(-50%,-50%);text-align:center}
.tri-core b{font-family:var(--font-display);font-weight:700;text-transform:uppercase;font-size:18px;letter-spacing:.02em;color:var(--accent);display:block}
.tri-core span{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark-faint)}

/* ============================================================
   Saha bandı — geniş fotoğraf
   ============================================================ */
.band{padding:clamp(56px,9vh,100px) var(--gut);background:var(--navy)}
.band__fig{position:relative;max-width:var(--maxw);margin:0 auto;border-radius:clamp(28px,4vw,56px);overflow:hidden;aspect-ratio:21/9;background:var(--navy-3)}
.band__fig img{width:100%;height:100%;object-fit:cover}
.band__fig::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 45%,rgba(3,18,37,.72));pointer-events:none}
.band__cap{position:absolute;left:clamp(18px,3vw,36px);bottom:clamp(16px,3vw,30px);z-index:2;display:flex;align-items:baseline;gap:16px;flex-wrap:wrap}
.band__cap b{font-family:var(--font-display);font-weight:700;text-transform:uppercase;font-size:clamp(20px,2.6vw,34px);letter-spacing:-.01em;color:#fff}
.band__cap span{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--on-dark-dim)}

/* ============================================================
   Readout — stats
   ============================================================ */
.readout{background:var(--ink);padding:clamp(70px,10vh,120px) 0;position:relative;border-bottom:1px solid var(--hair)}
.readout__grid{display:grid;grid-template-columns:repeat(4,1fr);position:relative;z-index:2}
.ro{padding:8px 28px;border-left:1px solid var(--hair)}
.ro:first-child{padding-left:0;border-left:none}
.ro__k{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:18px}
.ro__v{font-family:var(--font-display);font-weight:700;font-size:clamp(40px,5.5vw,76px);line-height:.9;color:var(--on-dark);display:block}
.ro__v small{font-size:.42em;color:var(--on-dark-dim);font-weight:500}
.ro__d{font-size:13.5px;color:var(--on-dark-dim);margin-top:14px;line-height:1.4}

/* ============================================================
   Contact
   ============================================================ */
.contact{padding:clamp(90px,13vh,150px) 0;position:relative;overflow:clip}
.contact__grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,6vw,90px);position:relative;z-index:2}
.contact h2{margin:22px 0 26px}
.contact h2 .ol{color:transparent;-webkit-text-stroke:1.4px var(--accent)}
.contact__lead{color:var(--on-dark-dim);font-size:17px;line-height:1.65;max-width:40ch;margin-bottom:36px}
.cdata{border-top:1px solid var(--hair)}
.cdata__row{display:grid;grid-template-columns:120px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--hair);align-items:baseline}
.cdata__row .k{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.cdata__row .v{font-size:16px;color:var(--on-dark)}
.cdata__row .v small{display:block;color:var(--on-dark-dim);font-size:13.5px;margin-top:4px;font-family:var(--font-mono)}
.tform{display:grid;grid-template-columns:1fr 1fr;gap:26px 22px;align-content:start}
.tfield{display:flex;flex-direction:column;gap:9px;position:relative}
.tfield.full{grid-column:1/-1}
.tfield label{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--on-dark-dim)}
.tfield input,.tfield textarea{background:var(--navy-3);border:1px solid var(--hair);border-radius:18px;
  padding:14px 20px;color:var(--on-dark);font:inherit;font-size:16px;transition:border-color .3s,background .3s}
.tfield input:focus,.tfield textarea:focus{outline:none;border-color:var(--accent);background:var(--navy-4)}
.tfield textarea{resize:vertical;min-height:96px;border-radius:22px}
.tform .btn{grid-column:1/-1;justify-self:start;margin-top:8px}
.tform__ok{grid-column:1/-1;font-family:var(--font-mono);font-size:13px;color:var(--accent);display:none}

/* ============================================================
   Footer — yüksek, modern; 3 katman:
   ① iletişim (büyük başlık + kartlar) ② başlıklı bağlantı sütunları ③ telif
   ============================================================ */
.footer{background:var(--ink);position:relative;
  border-radius:clamp(36px,5vw,72px) clamp(36px,5vw,72px) 0 0;
  padding:clamp(80px,11vh,130px) 0 38px;margin-top:8px}

/* ① İletişim katmanı */
.foot-hero{display:grid;grid-template-columns:1.1fr .9fr;gap:clamp(36px,5vw,72px);align-items:center;
  padding-bottom:clamp(48px,7vh,76px);border-bottom:1px solid var(--hair);position:relative;z-index:2}
.foot-hero__title{font-family:var(--font-display);font-weight:700;text-transform:uppercase;letter-spacing:-.02em;
  line-height:.95;font-size:clamp(40px,5.6vw,78px);color:var(--on-dark);margin-top:20px}
.foot-hero__title .ol{color:transparent;-webkit-text-stroke:1.4px var(--accent)}
.foot-cinfo{display:flex;flex-direction:column;gap:12px}
.foot-cinfo__item{display:flex;align-items:center;gap:20px;border:1px solid var(--hair);border-radius:999px;
  padding:18px 28px;transition:border-color .3s,background .3s,transform .3s}
a.foot-cinfo__item:hover{border-color:var(--accent);background:rgba(138,163,184,.06);transform:translateX(4px)}
.foot-cinfo__item .k{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);min-width:74px}
.foot-cinfo__item .v{font-size:16px;color:var(--on-dark);line-height:1.3;flex:1}
.foot-cinfo__item .a{color:var(--on-dark-faint);font-size:16px;transition:color .3s,transform .3s}
a.foot-cinfo__item:hover .a{color:var(--accent);transform:translate(2px,-2px)}

/* ② Bağlantı katmanı — başlıklı sütunlar */
.foot-mid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:clamp(28px,4vw,56px);
  padding:clamp(44px,6vh,64px) 0;border-bottom:1px solid var(--hair);position:relative;z-index:2}
.foot-brand img{height:46px;width:auto;margin-bottom:20px}
.foot-brand p{font-family:var(--font-display);font-weight:500;font-size:19px;color:var(--on-dark-dim);max-width:22ch;line-height:1.35;margin-bottom:26px}
.foot-social{display:flex;gap:9px}
.foot-social a{width:40px;height:40px;border:1px solid var(--hair);border-radius:50%;display:grid;place-items:center;color:var(--on-dark-dim);transition:.3s}
.foot-social a:hover{border-color:var(--accent);color:var(--accent)}
.foot-col h5{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);margin-bottom:20px}
.foot-col a{display:block;color:var(--on-dark-dim);font-size:14.5px;padding:7px 0;border-radius:8px;transition:color .3s,padding .3s}
.foot-col a:hover{color:var(--on-dark);padding-left:6px}

/* ③ Telif katmanı */
.foot-bot{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap;padding-top:28px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--on-dark-faint);position:relative;z-index:2}

/* ============================================================
   Reveal
   ============================================================ */
@keyframes rise{from{transform:translateY(26px)}to{transform:none}}
@media (prefers-reduced-motion:no-preference){
  html.js-anim .reveal{opacity:.001}
  html.js-anim .reveal.in{opacity:1;animation:rise .8s cubic-bezier(.2,.7,.2,1) both}
  html.js-anim .reveal.in.d1{animation-delay:.08s}
  html.js-anim .reveal.in.d2{animation-delay:.16s}
  html.js-anim .reveal.in.d3{animation-delay:.24s}
}

/* ============================================================
   Tweak variants
   ============================================================ */
body[data-mode="dark"] .register{background:var(--navy);color:var(--on-dark)}
body[data-mode="dark"] .register h2{color:var(--on-dark)}
body[data-mode="dark"] .register .pindex__list{border-top-color:var(--hair)}
body[data-mode="dark"] .register .prow{border-bottom-color:var(--hair)}
body[data-mode="dark"] .register .prow__name{color:var(--on-dark)}
body[data-mode="dark"] .register .prow__meta{color:var(--on-dark-dim)}
body[data-mode="dark"] .register .prow__code,
body[data-mode="dark"] .register .prow:hover .prow__name,
body[data-mode="dark"] .register .prow.active .prow__name,
body[data-mode="dark"] .register .prow__go{color:var(--accent)}
body[data-mode="dark"] .register .prow::before{background:var(--accent)}
body[data-mode="dark"] .register .sechead small{color:var(--on-dark-dim)}
body[data-mode="dark"] .register .foot{border-top-color:var(--hair)}
body[data-mode="dark"] .register .foot p{color:var(--on-dark-dim)}
body[data-mode="dark"] .register .pv{border-color:var(--hair)}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:1000px){
  .hero{justify-content:flex-start}
  .hero__inner{grid-template-columns:1fr;gap:34px}
  .hero__truss{max-width:300px;margin:6px auto 0;order:0}
  .titleblock{display:none}
  .statement__grid,.pindex,.contact__grid{grid-template-columns:1fr;gap:40px}
  .pindex{gap:26px}
  .pindex__preview{position:static;order:-1}
  .pindex__preview .pv{aspect-ratio:16/10}
  .cap{grid-template-columns:60px 1fr;gap:8px 18px}
  .cap__desc{grid-column:2;max-width:none}
  .cap__go{display:none}
  .foot-contact-placeholder{display:none}
  .foot-hero{grid-template-columns:1fr;gap:36px}
  .foot-mid{grid-template-columns:1fr 1fr;gap:36px}
  .foot-brand{grid-column:1/-1}
  .readout__grid{grid-template-columns:1fr 1fr;gap:40px 0}
  .ro{padding:8px 24px}
  .ro:nth-child(odd){padding-left:0;border-left:none}
  .tridia{aspect-ratio:1/1.1}
}
@media (max-width:680px){
  .nav__links{display:none}
  .nav__burger{display:flex}
  .nav__right .btn{display:none}
  .prow{grid-template-columns:72px 1fr auto;gap:12px}
  .prow__code{display:none}
  .prow__thumb{width:72px;height:56px}
  .band__fig{aspect-ratio:16/10}
  .cap{grid-template-columns:1fr}
  .cap__num{display:none}
  .tform{grid-template-columns:1fr}
  .foot-mid{grid-template-columns:1fr}
  .foot-cinfo__item{padding:16px 22px}
  .readout__grid{grid-template-columns:1fr}
  .ro{border-left:none;padding:18px 0;border-top:1px solid var(--hair)}
  .ro:first-child{border-top:none}
  .cdata__row{grid-template-columns:1fr}
}