/* ==========================================================================
   DETO MÜHENDİSLİK — Kurumsal Tasarım Sistemi
   Kimlik: Beton grisi nötrler · petrol-arduvaz · çelik-petrol mavi · orman yeşili (yalnız sürdürülebilirlik)
   Tipografi: Space Grotesk (başlık) / IBM Plex Sans (gövde) / IBM Plex Mono (teknik etiket)
   İmza: uçucu kül mikro-kürecik alanı → dayanım eğrisi · mühendislik ölçü çizgileri
   ========================================================================== */

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{min-height:100%;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img,svg,video{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
:focus-visible{outline:2.5px solid var(--brand-l);outline-offset:3px;border-radius:2px}

/* ---------- Tokens ---------- */
:root{
  /* Concrete neutrals (cool, NOT warm cream) */
  --paper:#EBEDEC;
  --paper-2:#E2E5E3;
  --paper-3:#D7DBD8;
  --surface:#F6F7F6;
  --surface-2:#FFFFFF;
  --line:#CED2D0;
  --line-2:#BABFBC;

  /* Ink */
  --ink:#161B1D;
  --ink-2:#4B5356;
  --ink-3:#777F7D;

  /* Deep slate-petrol (dark sections) */
  --slate:#0F2426;
  --slate-2:#16322F;
  --slate-3:#1E3E3A;

  /* Brand — steel-petrol blue (engineering) */
  --brand:#11576B;
  --brand-d:#0C4150;
  --brand-l:#2B8294;

  /* Sustainability — forest green (used sparingly, only eco context) */
  --green:#357A4E;
  --green-l:#54A06E;

  /* Kiln amber — micro-accent only */
  --amber:#C5803A;

  /* On dark */
  --on-d:#E9ECE9;
  --on-d-2:#9FB0AC;
  --d-line:rgba(233,236,233,.13);
  --d-line-2:rgba(233,236,233,.22);

  /* Type */
  --f-disp:"Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --f-body:"IBM Plex Sans",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;

  /* Scale */
  --step--1:clamp(.78rem,.76rem + .1vw,.84rem);
  --step-0:clamp(.95rem,.92rem + .14vw,1.04rem);
  --step-1:clamp(1.12rem,1.05rem + .34vw,1.32rem);
  --step-2:clamp(1.36rem,1.22rem + .62vw,1.78rem);
  --step-3:clamp(1.7rem,1.42rem + 1.2vw,2.5rem);
  --step-4:clamp(2.15rem,1.6rem + 2.3vw,3.6rem);
  --step-5:clamp(2.7rem,1.7rem + 4.1vw,5.1rem);

  /* Layout */
  --wrap:1240px;
  --wrap-narrow:880px;
  --gutter:clamp(1.15rem,4vw,3rem);
  --sec-y:clamp(3.6rem,7vw,7rem);
  --radius:3px;
  --radius-lg:6px;
  --shadow:0 1px 2px rgba(15,36,38,.05),0 8px 28px -18px rgba(15,36,38,.22);
  --shadow-lg:0 2px 6px rgba(15,36,38,.06),0 30px 60px -30px rgba(15,36,38,.32);
}

/* Concrete grain overlay (very subtle) */
:root{
  --grain:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.5'/%3E%3C/svg%3E");
}

/* ---------- Base ---------- */
body{
  font-family:var(--f-body);
  font-size:var(--step-0);
  line-height:1.65;
  color:var(--ink);
  background:var(--paper);
  background-image:radial-gradient(circle at 1px 1px,rgba(22,27,29,.045) 1px,transparent 0);
  background-size:26px 26px;
  overflow-x:hidden;
}

h1,h2,h3,h4{font-family:var(--f-disp);font-weight:600;line-height:1.08;letter-spacing:-.018em;color:var(--ink)}
h1{font-size:var(--step-5)}
h2{font-size:var(--step-4)}
h3{font-size:var(--step-2)}
h4{font-size:var(--step-1);letter-spacing:-.01em}
p{max-width:68ch}
strong{font-weight:600}

/* ---------- Layout helpers ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.wrap-narrow{max-width:var(--wrap-narrow)}
.section{padding-block:var(--sec-y)}
.section--tight{padding-block:clamp(2.4rem,4.5vw,4rem)}
.lede{font-size:var(--step-1);line-height:1.55;color:var(--ink-2);max-width:64ch}
.mt-s{margin-top:.6rem}.mt-m{margin-top:1.4rem}.mt-l{margin-top:2.6rem}
.center{text-align:center;margin-inline:auto}

/* ---------- Eyebrow / labels (mono, encode real info) ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--f-mono);font-size:var(--step--1);font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--brand);
}
.eyebrow::before{content:"";width:1.7rem;height:1px;background:var(--brand);opacity:.6}
.eyebrow--d{color:var(--brand-l)}
.eyebrow--green{color:var(--green)}
.eyebrow--green::before{background:var(--green)}
.eyebrow--plain::before{display:none}

.tag{
  display:inline-block;font-family:var(--f-mono);font-size:.72rem;font-weight:500;
  letter-spacing:.06em;color:var(--ink-2);border:1px solid var(--line-2);
  padding:.28em .65em;border-radius:2px;background:var(--surface-2);
  white-space:nowrap;
}
.tag--brand{color:var(--brand);border-color:color-mix(in srgb,var(--brand) 40%,var(--line-2))}
.tag--green{color:var(--green);border-color:color-mix(in srgb,var(--green) 40%,var(--line-2))}

/* ---------- Buttons ---------- */
.btn{
  --bg:var(--brand);--fg:#fff;--bd:var(--brand);
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--f-mono);font-size:.82rem;font-weight:500;letter-spacing:.04em;
  padding:.85em 1.4em;border:1px solid var(--bd);background:var(--bg);color:var(--fg);
  border-radius:var(--radius);cursor:pointer;transition:.22s ease;
  position:relative;
}
.btn .ar{transition:transform .22s ease}
.btn:hover{background:var(--brand-d);border-color:var(--brand-d)}
.btn:hover .ar{transform:translateX(3px)}
.btn--ghost{--bg:transparent;--fg:var(--ink);--bd:var(--line-2)}
.btn--ghost:hover{--bg:var(--ink);--fg:var(--paper);border-color:var(--ink)}
.btn--on-d{--bg:transparent;--fg:var(--on-d);--bd:var(--d-line-2)}
.btn--on-d:hover{background:rgba(255,255,255,.08);border-color:var(--on-d)}
.btn--solid-d{--bg:var(--on-d);--fg:var(--slate);--bd:var(--on-d)}
.btn--solid-d:hover{background:#fff;border-color:#fff}
.btn-row{display:flex;flex-wrap:wrap;gap:.85rem}

/* Text link */
.tlink{
  display:inline-flex;align-items:center;gap:.45rem;
  font-family:var(--f-mono);font-size:.82rem;font-weight:500;letter-spacing:.03em;
  color:var(--brand);border-bottom:1px solid transparent;padding-bottom:2px;transition:.2s;
}
.tlink:hover{border-color:var(--brand);gap:.7rem}
.tlink--d{color:var(--brand-l)}
.tlink--d:hover{border-color:var(--brand-l)}

/* ---------- Header / Nav ---------- */
.site-head{
  position:sticky;top:0;z-index:60;
  background:color-mix(in srgb,var(--paper) 86%,transparent);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s,background .25s;
}
.site-head.is-stuck{box-shadow:0 10px 30px -22px rgba(15,36,38,.5);background:color-mix(in srgb,var(--paper) 94%,transparent)}
.nav{display:flex;align-items:center;gap:1.5rem;min-height:70px}
.brand{display:flex;align-items:center;gap:.7rem;flex-shrink:0;margin-right:auto}
.brand svg{height:38px;width:auto}
.brand__txt{display:flex;flex-direction:column;line-height:1}
.brand__name{font-family:var(--f-disp);font-weight:700;font-size:1.16rem;letter-spacing:.02em;color:var(--ink)}
.brand__sub{font-family:var(--f-mono);font-size:.6rem;letter-spacing:.24em;text-transform:uppercase;color:var(--ink-3);margin-top:3px}

.nav__menu{display:flex;align-items:center;gap:.15rem}
.nav__menu a{
  font-family:var(--f-body);font-weight:500;font-size:.92rem;color:var(--ink-2);
  padding:.5em .8em;border-radius:var(--radius);transition:.18s;position:relative;
}
.nav__menu a:hover{color:var(--ink);background:var(--paper-2)}
.nav__menu a.is-active{color:var(--brand)}
.nav__menu a.is-active::after{
  content:"";position:absolute;left:.8em;right:.8em;bottom:.18em;height:2px;background:var(--brand);border-radius:2px;
}
.nav__cta{margin-left:.6rem}

.nav__toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:44px;height:44px;border:1px solid var(--line-2);border-radius:var(--radius);
  background:var(--surface-2);cursor:pointer;margin-left:auto;
}
.nav__toggle span{display:block;width:20px;height:2px;background:var(--ink);margin-inline:auto;transition:.25s}
.nav__toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav__toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{position:relative;background:var(--slate);color:var(--on-d);overflow:hidden;isolation:isolate}
.hero::before{content:"";position:absolute;inset:0;background-image:var(--grain);opacity:.5;mix-blend-mode:overlay;pointer-events:none;z-index:-1}
.hero__grid{
  position:absolute;inset:0;z-index:-1;pointer-events:none;
  background-image:linear-gradient(var(--d-line) 1px,transparent 1px),linear-gradient(90deg,var(--d-line) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(120% 100% at 80% 0%,#000 35%,transparent 78%);
  mask-image:radial-gradient(120% 100% at 80% 0%,#000 35%,transparent 78%);
}
.hero__inner{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(2rem,5vw,4.5rem);align-items:center;
  padding-block:clamp(3.6rem,8vw,7.5rem)}
.hero__eyebrow{color:var(--brand-l)}
.hero__eyebrow::before{background:var(--brand-l)}
.hero h1{color:#fff;font-weight:600;margin-top:1.3rem;font-size:clamp(2.3rem,1.5rem + 3.4vw,4.3rem)}
.hero h1 em{font-style:normal;color:var(--brand-l)}
.hero__lede{color:var(--on-d-2);font-size:var(--step-1);line-height:1.55;max-width:46ch;margin-top:1.5rem}
.hero__cta{margin-top:2.3rem}
.hero__meta{display:flex;flex-wrap:wrap;gap:1.6rem 2.4rem;margin-top:2.8rem;padding-top:1.8rem;border-top:1px solid var(--d-line)}
.hero__meta dl{display:flex;flex-direction:column;gap:.25rem}
.hero__meta dt{font-family:var(--f-mono);font-size:.66rem;letter-spacing:.16em;text-transform:uppercase;color:var(--on-d-2)}
.hero__meta dd{font-family:var(--f-disp);font-weight:600;font-size:1.5rem;color:#fff}
.hero__meta dd small{font-size:.62em;color:var(--on-d-2);font-weight:500;font-family:var(--f-mono);letter-spacing:.02em}

/* Hero signature figure (particles -> strength curve) */
.hero__figure{position:relative;aspect-ratio:1/1;max-width:520px;width:100%;margin-inline:auto}
.hero__figure svg{width:100%;height:100%;overflow:visible}
.hero__figure figcaption{
  position:absolute;left:0;bottom:-2.2rem;font-family:var(--f-mono);font-size:.68rem;
  letter-spacing:.04em;color:var(--on-d-2);
}

/* curve draw animation */
.curve-path{stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.4s .3s ease forwards}
.sphere{opacity:0;animation:pop .5s ease forwards}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pop{to{opacity:1}}
@media (prefers-reduced-motion:reduce){
  .curve-path{animation:none;stroke-dashoffset:0}
  .sphere{animation:none;opacity:1}
}

/* ---------- Generic dark band ---------- */
.band-dark{position:relative;background:var(--slate);color:var(--on-d);overflow:hidden;isolation:isolate}
.band-dark::before{content:"";position:absolute;inset:0;background-image:var(--grain);opacity:.45;mix-blend-mode:overlay;pointer-events:none;z-index:-1}
.band-dark h2,.band-dark h3{color:#fff}
.band-dark .lede{color:var(--on-d-2)}

.band-brand{background:var(--brand);color:#fff}
.band-brand h2,.band-brand h3{color:#fff}
.band-brand .lede{color:rgba(255,255,255,.82)}

/* ---------- Section headers ---------- */
.sec-head{max-width:760px}
.sec-head h2{margin-top:1.1rem}
.sec-head .lede{margin-top:1.1rem}
.sec-head--split{display:grid;grid-template-columns:1fr auto;align-items:end;gap:2rem;max-width:none}
.sec-head--split .lede{margin-top:1.1rem}

/* Dimension-line divider (engineering drawing motif) */
.dim{display:flex;align-items:center;gap:1rem;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase}
.dim::before,.dim::after{content:"";height:1px;background:var(--line-2);flex:1}
.dim__tick{position:relative}
.dim__tick::before,.dim__tick::after{content:"";position:absolute;top:50%;width:1px;height:9px;background:var(--line-2);transform:translateY(-50%)}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:clamp(1rem,2vw,1.5rem)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}

.card{
  background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-lg);
  padding:clamp(1.4rem,2.4vw,2rem);position:relative;transition:.25s ease;height:100%;
  display:flex;flex-direction:column;
}
.card:hover{border-color:var(--line-2);box-shadow:var(--shadow);transform:translateY(-3px)}
.card__code{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;color:var(--brand)}
.card h3{font-size:var(--step-1);margin-top:.7rem}
.card p{color:var(--ink-2);font-size:.96rem;margin-top:.7rem}
.card .tlink{margin-top:auto;padding-top:1.2rem}
.card__ico{width:46px;height:46px;color:var(--brand);margin-bottom:.2rem}
.card--feature{background:linear-gradient(180deg,var(--surface) 0%,var(--surface-2) 100%)}

/* Product family card (with mono spec footer) */
.pcard{background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;transition:.25s;display:flex;flex-direction:column;height:100%}
.pcard:hover{border-color:var(--brand);box-shadow:var(--shadow);transform:translateY(-3px)}
.pcard__top{padding:clamp(1.4rem,2.4vw,1.9rem);flex:1}
.pcard__ico{width:40px;height:40px;color:var(--brand);margin-bottom:1rem}
.pcard h3{font-size:var(--step-1)}
.pcard p{color:var(--ink-2);font-size:.94rem;margin-top:.6rem}
.pcard__foot{border-top:1px solid var(--line);background:var(--surface);padding:.85rem clamp(1.4rem,2.4vw,1.9rem);
  display:flex;justify-content:space-between;align-items:center;gap:1rem}
.pcard__std{font-family:var(--f-mono);font-size:.72rem;color:var(--ink-3);letter-spacing:.03em}

/* ---------- Feature split (text + figure) ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:clamp(2rem,5vw,4.5rem);align-items:center}
.split--rev .split__media{order:-1}
.split__media{position:relative}

/* Stat strip */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.stats .stat{background:var(--surface-2);padding:clamp(1.3rem,2.5vw,2rem)}
.stat__n{font-family:var(--f-disp);font-weight:600;font-size:clamp(1.8rem,1.2rem+1.8vw,2.7rem);color:var(--ink);line-height:1}
.stat__n .u{font-size:.5em;color:var(--brand);font-family:var(--f-mono);font-weight:500;margin-left:.2em}
.stat__l{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.06em;color:var(--ink-2);margin-top:.7rem;text-transform:uppercase;line-height:1.4}
.band-dark .stats{background:var(--d-line);border-color:var(--d-line)}
.band-dark .stats .stat{background:transparent}
.band-dark .stat__n{color:#fff}
.band-dark .stat__n .u{color:var(--brand-l)}
.band-dark .stat__l{color:var(--on-d-2)}

/* ---------- Spec / data tables ---------- */
.spec{width:100%;border-collapse:collapse;font-size:.92rem;background:var(--surface-2);border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden}
.spec caption{caption-side:top;text-align:left;font-family:var(--f-mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);padding:0 0 .8rem}
.spec th,.spec td{padding:.8rem 1.1rem;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.spec thead th{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);background:var(--surface);font-weight:500}
.spec tbody th{font-weight:600;color:var(--ink);width:38%}
.spec td{color:var(--ink-2)}
.spec tr:last-child th,.spec tr:last-child td{border-bottom:none}
.spec tbody tr:hover{background:var(--surface)}
.spec .num{font-family:var(--f-mono);color:var(--brand)}

/* ---------- Lists ---------- */
.flist{display:grid;gap:.9rem;max-width:62ch}
.flist li{display:grid;grid-template-columns:auto 1fr;gap:.85rem;align-items:start;color:var(--ink-2)}
.flist li::before{content:"";width:8px;height:8px;margin-top:.55rem;background:var(--brand);transform:rotate(45deg);flex-shrink:0}
.flist--green li::before{background:var(--green)}
.band-dark .flist li{color:var(--on-d-2)}
.band-dark .flist li::before{background:var(--brand-l)}

.checklist{display:grid;gap:.75rem}
.checklist li{display:grid;grid-template-columns:auto 1fr;gap:.75rem;align-items:start;color:var(--ink-2);font-size:.96rem}
.checklist svg{width:20px;height:20px;color:var(--green);margin-top:.15rem;flex-shrink:0}

/* ---------- Color swatches (product finishes) ---------- */
.swatches{display:grid;grid-template-columns:repeat(3,1fr);gap:1.1rem}
@media(min-width:760px){.swatches{grid-template-columns:repeat(6,1fr)}}
.swatch{display:flex;flex-direction:column;gap:.5rem}
.swatch__chip{height:78px;border-radius:var(--radius-lg);border:1px solid rgba(0,0,0,.14);
  background:
    repeating-linear-gradient(26deg,rgba(255,255,255,.06) 0 5px,rgba(0,0,0,.06) 5px 11px),
    linear-gradient(180deg,rgba(255,255,255,.10),rgba(0,0,0,.14)),
    var(--c,#8a5a34);
  box-shadow:inset 0 -20px 30px -22px rgba(0,0,0,.6),var(--shadow)}
.swatch__name{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.04em;text-transform:uppercase;color:var(--ink-2)}

/* ---------- Process / timeline (real sequence) ---------- */
.steps{display:grid;gap:0;counter-reset:s}
.steps li{display:grid;grid-template-columns:auto 1fr;gap:1.6rem;padding:1.6rem 0;border-top:1px solid var(--line)}
.steps li:last-child{border-bottom:1px solid var(--line)}
.steps__n{font-family:var(--f-mono);font-size:.8rem;color:var(--brand);padding-top:.2rem}
.steps h4{margin-bottom:.4rem}
.steps p{color:var(--ink-2);font-size:.95rem}

/* ---------- Media / image frames ---------- */
.frame{
  position:relative;border:1px solid var(--line-2);border-radius:var(--radius-lg);overflow:hidden;
  background:linear-gradient(135deg,var(--paper-2),var(--paper-3));aspect-ratio:4/3;
}
.frame--tall{aspect-ratio:3/4}
.frame--wide{aspect-ratio:16/9}
.frame__ph{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.7rem;text-align:center;padding:1.5rem}
.frame__ph svg{width:40px;height:40px;color:var(--ink-3);opacity:.7}
.frame__ph span{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.06em;color:var(--ink-3);text-transform:uppercase}
.frame__corner{position:absolute;width:14px;height:14px;border:2px solid var(--brand);opacity:.55}
.frame__corner.tl{top:9px;left:9px;border-right:0;border-bottom:0}
.frame__corner.br{bottom:9px;right:9px;border-left:0;border-top:0}
.frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.frame__tag{position:absolute;left:10px;bottom:10px;z-index:2;background:rgba(15,36,38,.82);color:var(--on-d);
  font-family:var(--f-mono);font-size:.66rem;letter-spacing:.06em;padding:.3em .6em;border-radius:2px;backdrop-filter:blur(4px)}

/* ---------- Project cards ---------- */
.proj{position:relative;border:1px solid var(--line);border-radius:var(--radius-lg);overflow:hidden;background:var(--surface-2);transition:.25s;display:flex;flex-direction:column}
.proj:hover{border-color:var(--line-2);box-shadow:var(--shadow);transform:translateY(-3px)}
.proj .frame{border:0;border-radius:0;border-bottom:1px solid var(--line)}
.proj__body{padding:clamp(1.3rem,2.3vw,1.7rem)}
.proj__meta{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:.8rem}
.proj h3{font-size:var(--step-1)}
.proj p{color:var(--ink-2);font-size:.94rem;margin-top:.5rem}

/* ---------- Callout / quote ---------- */
.callout{border-left:3px solid var(--brand);padding:.4rem 0 .4rem 1.6rem;max-width:58ch}
.callout p{font-family:var(--f-disp);font-weight:500;font-size:var(--step-2);line-height:1.3;color:var(--ink);letter-spacing:-.01em}
.band-dark .callout{border-color:var(--brand-l)}
.band-dark .callout p{color:#fff}

/* ---------- Note / honesty marker ---------- */
.note{
  display:grid;grid-template-columns:auto 1fr;gap:1rem;align-items:start;
  background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--amber);
  border-radius:var(--radius);padding:1.1rem 1.3rem;font-size:.92rem;color:var(--ink-2);max-width:70ch;
}
.note svg{width:20px;height:20px;color:var(--amber);margin-top:.15rem}
.note strong{color:var(--ink)}

/* ---------- CTA band ---------- */
.cta-band{position:relative;background:var(--slate);color:var(--on-d);overflow:hidden;isolation:isolate}
.cta-band::before{content:"";position:absolute;inset:0;background-image:var(--grain);opacity:.45;mix-blend-mode:overlay;z-index:-1}
.cta-band__grid{position:absolute;inset:0;z-index:-1;background-image:linear-gradient(90deg,var(--d-line) 1px,transparent 1px);background-size:64px 100%;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 60%);mask-image:linear-gradient(90deg,transparent,#000 60%)}
.cta-band .inner{display:grid;grid-template-columns:1fr auto;gap:2.4rem;align-items:center}
.cta-band h2{color:#fff;max-width:18ch}
.cta-band p{color:var(--on-d-2);margin-top:1rem;max-width:46ch}

/* ---------- Forms ---------- */
.form{display:grid;gap:1.2rem}
.field{display:grid;gap:.45rem}
.field label{font-family:var(--f-mono);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2)}
.field label .req{color:var(--amber)}
.field input,.field select,.field textarea{
  width:100%;background:var(--surface-2);border:1px solid var(--line-2);border-radius:var(--radius);
  padding:.8em .95em;font-size:.96rem;color:var(--ink);transition:.18s;font-family:var(--f-body);
}
.field textarea{min-height:140px;resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb,var(--brand) 14%,transparent);outline:none}
.field input::placeholder,.field textarea::placeholder{color:var(--ink-3)}
.field--row{display:grid;grid-template-columns:1fr 1fr;gap:1.2rem}
.form__note{font-size:.82rem;color:var(--ink-3)}
.form-status{font-size:.9rem;padding:.7rem .9rem;border-radius:var(--radius);display:none}
.form-status.ok{display:block;background:color-mix(in srgb,var(--green) 12%,var(--surface-2));border:1px solid var(--green);color:var(--green)}

/* ---------- Contact info rows ---------- */
.info-row{display:grid;grid-template-columns:auto 1fr;gap:1.1rem;align-items:start;padding:1.2rem 0;border-bottom:1px solid var(--line)}
.info-row:last-child{border-bottom:0}
.info-row__ico{width:42px;height:42px;border:1px solid var(--line-2);border-radius:var(--radius);display:grid;place-items:center;color:var(--brand)}
.info-row__ico svg{width:20px;height:20px}
.info-row h4{font-size:1rem;margin-bottom:.2rem}
.info-row p,.info-row a{color:var(--ink-2);font-size:.95rem}
.info-row a:hover{color:var(--brand)}

/* ---------- Page hero (interior) ---------- */
.phead{position:relative;background:var(--slate);color:var(--on-d);overflow:hidden;isolation:isolate}
.phead::before{content:"";position:absolute;inset:0;background-image:var(--grain);opacity:.5;mix-blend-mode:overlay;z-index:-1}
.phead__grid{position:absolute;inset:0;z-index:-1;background-image:linear-gradient(var(--d-line) 1px,transparent 1px),linear-gradient(90deg,var(--d-line) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(130% 120% at 90% 0%,#000 30%,transparent 75%);mask-image:radial-gradient(130% 120% at 90% 0%,#000 30%,transparent 75%)}
.phead__inner{padding-block:clamp(2.8rem,6vw,5rem)}
.phead h1{color:#fff;font-size:var(--step-4);max-width:18ch;margin-top:1.2rem}
.phead .lede{color:var(--on-d-2);margin-top:1.3rem;max-width:60ch}
.crumbs{display:flex;gap:.55rem;align-items:center;font-family:var(--f-mono);font-size:.74rem;letter-spacing:.04em;color:var(--on-d-2)}
.crumbs a:hover{color:#fff}
.crumbs span{opacity:.5}

/* ---------- TOC / in-page nav ---------- */
.toc{position:sticky;top:90px;display:flex;flex-direction:column;gap:.1rem}
.toc a{font-family:var(--f-mono);font-size:.8rem;color:var(--ink-3);padding:.5rem .8rem;border-left:2px solid var(--line);transition:.18s}
.toc a:hover,.toc a.is-active{color:var(--brand);border-color:var(--brand);background:var(--surface)}

/* ---------- Footer ---------- */
.site-foot{background:var(--slate);color:var(--on-d);position:relative;overflow:hidden;isolation:isolate}
.site-foot::before{content:"";position:absolute;inset:0;background-image:var(--grain);opacity:.4;mix-blend-mode:overlay;z-index:-1}
.foot-top{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:2.4rem;padding-block:clamp(3rem,5vw,4.5rem)}
.foot-brand .brand__name{color:#fff}
.foot-brand .brand__sub{color:var(--on-d-2)}
.foot-brand p{color:var(--on-d-2);font-size:.92rem;margin-top:1.2rem;max-width:34ch}
.foot-col h4{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--on-d-2);font-weight:500;margin-bottom:1.1rem}
.foot-col ul{display:grid;gap:.65rem}
.foot-col a{color:var(--on-d);font-size:.92rem;opacity:.85;transition:.18s}
.foot-col a:hover{opacity:1;color:var(--brand-l)}
.foot-social{display:flex;gap:.6rem;margin-top:1.4rem}
.foot-social a{width:38px;height:38px;border:1px solid var(--d-line-2);border-radius:var(--radius);display:grid;place-items:center;color:var(--on-d);transition:.2s}
.foot-social a:hover{background:rgba(255,255,255,.08);border-color:var(--on-d);color:#fff}
.foot-social svg{width:17px;height:17px}
.foot-bottom{border-top:1px solid var(--d-line);padding-block:1.4rem;display:flex;flex-wrap:wrap;gap:1rem 1.5rem;justify-content:space-between;align-items:center}
.foot-bottom p,.foot-bottom a{font-size:.8rem;color:var(--on-d-2)}
.foot-bottom a:hover{color:#fff}
.foot-legal{display:flex;gap:1.4rem;flex-wrap:wrap}

/* ---------- Reveal animation ---------- */
.reveal{opacity:1;transform:none}
.js .reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal,.js .reveal{opacity:1;transform:none;transition:none}}

/* ---------- Utilities ---------- */
.skip{position:absolute;left:-999px;top:0;z-index:200;background:var(--brand);color:#fff;padding:.7rem 1rem;border-radius:0 0 var(--radius) 0;font-family:var(--f-mono);font-size:.8rem}
.skip:focus{left:0}
.muted{color:var(--ink-3)}
.nowrap{white-space:nowrap}
hr.rule{border:0;border-top:1px solid var(--line);margin-block:clamp(2.4rem,4vw,3.6rem)}
.band-dark hr.rule{border-color:var(--d-line)}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width:1080px){
  .foot-top{grid-template-columns:1.5fr 1fr 1fr}
  .foot-brand{grid-column:1/-1}
}
@media (max-width:920px){
  .hero__inner{grid-template-columns:1fr;gap:2.5rem}
  .hero__figure{grid-row:1;max-width:380px}
  .split,.cta-band .inner{grid-template-columns:1fr;gap:2.2rem}
  .split--rev .split__media{order:0}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .sec-head--split{grid-template-columns:1fr}
  .cta-band .inner .btn-row{justify-self:start}
}
@media (max-width:780px){
  .nav__menu,.nav__cta{
    position:fixed;inset:70px 0 auto 0;flex-direction:column;align-items:stretch;
    background:var(--paper);border-bottom:1px solid var(--line);padding:1rem var(--gutter) 1.5rem;
    gap:.2rem;transform:translateY(-130%);transition:transform .3s ease;box-shadow:var(--shadow-lg);
    max-height:calc(100vh - 70px);overflow:auto;
  }
  .nav__cta{inset:auto 0 auto 0;transform:translateY(-130%);box-shadow:none;border-bottom:1px solid var(--line);padding-top:0}
  .nav[data-open="true"] .nav__menu{transform:translateY(0)}
  .nav[data-open="true"] .nav__cta{transform:translateY(0)}
  .nav__menu a{padding:.85em .6em;font-size:1.05rem;border-bottom:1px solid var(--line)}
  .nav__menu a.is-active::after{display:none}
  .nav__cta{margin-left:0}
  .nav__cta .btn{width:100%;justify-content:center;margin-top:.4rem}
  .nav__toggle{display:flex}
  .grid-3,.grid-2{grid-template-columns:1fr}
  .field--row{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr 1fr}
  .toc{display:none}
}
@media (max-width:520px){
  .grid-4,.stats{grid-template-columns:1fr}
  .foot-top{grid-template-columns:1fr}
  .hero__meta{gap:1.3rem 1.8rem}
  .btn-row .btn{width:100%;justify-content:center}
  .cta-band .inner .btn-row .btn{width:100%}
}

/* Print-ish safety */
@media print{.site-head,.cta-band,.site-foot{display:none}}

/* Anchor offset for sticky header */
:where(section,article,div)[id]{scroll-margin-top:88px}

/* İletişim düzeni: form biraz daha geniş, bilgi sütunu dar */
.split--contact{grid-template-columns:1.15fr .85fr;align-items:start}
@media(max-width:920px){.split--contact{grid-template-columns:1fr}}
.info-list{margin-top:0}

/* ---- Bilgi makalesi düzeni & tipografi ---- */
.doc{display:grid;grid-template-columns:200px minmax(0,1fr);gap:clamp(2rem,5vw,4rem);align-items:start}
@media(max-width:980px){.doc{grid-template-columns:1fr}}
.toc-wrap .toc-label{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3);padding:0 .8rem .6rem}
.prose{max-width:74ch}
.prose h2{font-family:var(--f-disp);font-weight:600;font-size:var(--step-3);letter-spacing:-.01em;line-height:1.2;margin:2.8rem 0 .9rem;color:var(--ink)}
.prose h2:first-child{margin-top:0}
.prose h3{font-family:var(--f-disp);font-weight:600;font-size:var(--step-1);margin:1.9rem 0 .6rem;color:var(--ink)}
.prose p{color:var(--ink-2);line-height:1.78;margin:1rem 0}
.prose strong{color:var(--ink);font-weight:600}
.prose ul,.prose ol{margin:1rem 0;padding-left:1.3rem;color:var(--ink-2);display:grid;gap:.5rem}
.prose li{line-height:1.7}
.prose li::marker{color:var(--brand)}
.prose a{color:var(--brand);text-decoration:underline;text-underline-offset:2px;text-decoration-thickness:1px}
.prose a:hover{color:var(--brand-d)}
.prose .spec,.prose .note,.prose .callout{margin:1.6rem 0}
.prose figure{margin:1.8rem 0}
.lede--doc{font-size:var(--step-1);color:var(--ink-2);line-height:1.6;margin-bottom:0}

/* =========================================================
   STRONG WOOD (marka bölümü) — katalog teması, #strong-wood'a hapsedilmiştir
   ========================================================= */
#strong-wood{
  --sw-cream:#EDEAC1; --sw-cream-2:#F3F0D9; --sw-cream-3:#E6E2BE;
  --sw-green:#3D482A; --sw-green-2:#55643A; --sw-ink:#2C331F;
  --sw-line:#CFC79A; --sw-muted:#62603c;
  background:var(--sw-cream); color:var(--sw-ink);
  border-block:1px solid var(--sw-line);
}
/* temel bileşenlerin bu bölüm içindeki renk uyarlaması */
#strong-wood .eyebrow{color:var(--sw-green-2)}
#strong-wood .eyebrow::before{background:var(--sw-green-2);opacity:.7}
#strong-wood h2,#strong-wood h3,#strong-wood h4,#strong-wood h5{color:var(--sw-green)}
#strong-wood .lede{color:var(--sw-ink)}
#strong-wood .muted{color:var(--sw-muted)}
#strong-wood .flist li{color:var(--sw-ink)}
#strong-wood .flist li strong{color:var(--sw-green)}
#strong-wood .flist--green li::before{background:var(--sw-green-2)}
#strong-wood .checklist li{color:var(--sw-ink)}
#strong-wood .checklist svg{color:var(--sw-green-2)}
#strong-wood .tlink{color:var(--sw-green)}
#strong-wood .tlink:hover{color:var(--sw-green-2)}
#strong-wood .swatch__name{color:var(--sw-ink)}
#strong-wood .spec{background:var(--sw-cream-2);border-color:var(--sw-line)}
#strong-wood .spec caption{color:var(--sw-muted)}
#strong-wood .spec thead th{background:var(--sw-cream-3);color:var(--sw-green);border-color:var(--sw-line)}
#strong-wood .spec th,#strong-wood .spec td{border-color:var(--sw-line)}
#strong-wood .spec tbody th{color:var(--sw-green)}
#strong-wood .spec td{color:var(--sw-ink)}
#strong-wood .spec .num{color:var(--sw-green-2)}
#strong-wood .spec tbody tr:hover{background:var(--sw-cream-3)}

/* marka adı */
.sw-title{font-size:clamp(2.6rem,1.7rem+3.6vw,4.6rem);letter-spacing:-.02em;line-height:.95}
/* el yazısı aksan (katalog) */
.sw-script{font-family:"Caveat",cursive;font-weight:600;color:var(--sw-green-2);line-height:1}
.sw-script--lg{display:block;font-size:clamp(1.8rem,1.3rem+1.8vw,2.5rem);color:var(--sw-green-2);line-height:1;margin:0 0 .15rem}
.sw-script--lg + .sw-h3{margin-top:0}
.sw-h3{font-size:var(--step-2);letter-spacing:-.01em}

/* rozetler */
.sw-badges{display:flex;flex-wrap:wrap;gap:.55rem}
.sw-badge{font-family:var(--f-mono);font-size:.72rem;letter-spacing:.02em;color:var(--sw-green);
  background:var(--sw-cream-2);border:1px solid var(--sw-line);border-radius:100px;padding:.4rem .8rem}

/* blok aralıkları */
.sw-block{margin-top:clamp(2.6rem,5.5vw,4.2rem)}

/* teknik + boyut tabloları: metnin altında 2 parça */
.sw-specs{display:grid;grid-template-columns:1fr;gap:1.4rem;margin-top:clamp(1.8rem,3.5vw,2.6rem)}
@media(min-width:820px){.sw-specs{grid-template-columns:1fr 1fr;align-items:start}}

/* hero görsel */
.sw-hero{position:relative;margin-top:clamp(1.8rem,4vw,2.6rem);border-radius:var(--radius-lg);overflow:hidden;
  border:1px solid var(--sw-line);box-shadow:var(--shadow);aspect-ratio:16/8}
.sw-hero img{width:100%;height:100%;object-fit:cover;display:block}
.sw-hero__cap{position:absolute;left:0;bottom:0;padding:1.4rem 1.6rem;color:#fff;font-size:clamp(1rem,.9rem+.5vw,1.35rem);
  font-weight:500;width:100%;background:linear-gradient(0deg,rgba(24,28,14,.72),rgba(24,28,14,0))}
.sw-hero__cap .sw-script{color:#e9e6bf;font-size:1.7em;vertical-align:-.06em;margin-right:.15em}
@media(max-width:640px){.sw-hero{aspect-ratio:16/11}}

/* özellik kartları */
.sw-feats{display:grid;grid-template-columns:repeat(2,1fr);gap:1.1rem}
@media(min-width:560px){.sw-feats{grid-template-columns:repeat(3,1fr)}}
@media(min-width:900px){.sw-feats{grid-template-columns:repeat(5,1fr)}}
.sw-feat{margin:0}
.sw-feat__img{display:block;aspect-ratio:1/1;overflow:hidden;border-radius:4px 34px 4px 4px;border:1px solid var(--sw-line);background:var(--sw-cream-3)}
.sw-feat__img img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .5s ease}
.sw-feat:hover .sw-feat__img img{transform:scale(1.06)}
.sw-feat h5{font-size:.98rem;margin:.85rem 0 .3rem;letter-spacing:-.01em;line-height:1.15}
.sw-feat p{font-size:.82rem;line-height:1.45;color:var(--sw-ink)}

/* galeri */
.sw-gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:.7rem}
@media(min-width:620px){.sw-gallery{grid-template-columns:repeat(3,1fr)}}
@media(min-width:980px){.sw-gallery{grid-template-columns:repeat(4,1fr)}}
.sw-gallery--tight{grid-template-columns:repeat(2,1fr)!important;gap:.6rem}
@media(min-width:560px){.sw-gallery--tight{grid-template-columns:repeat(3,1fr)!important}}
.sw-gallery__item{padding:0;margin:0;border:1px solid var(--sw-line);border-radius:5px;overflow:hidden;
  cursor:zoom-in;background:var(--sw-cream-2);aspect-ratio:4/3;display:block;position:relative}
.sw-gallery__item img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .45s ease}
.sw-gallery__item:hover img,.sw-gallery__item:focus-visible img{transform:scale(1.05)}
.sw-gallery__item:focus-visible{outline:2px solid var(--sw-green);outline-offset:2px}

/* katalog PDF şeridi */
.sw-catalog{margin-top:clamp(2.4rem,5vw,3.4rem);display:flex;flex-wrap:wrap;gap:1.2rem;align-items:center;justify-content:space-between;
  background:var(--sw-green);color:#eef0d8;border-radius:var(--radius-lg);padding:clamp(1.3rem,3vw,1.9rem) clamp(1.4rem,3vw,2.1rem)}
.sw-catalog__txt{display:flex;gap:.95rem;align-items:center}
.sw-catalog__txt svg{width:30px;height:30px;color:#cfd3a3;flex-shrink:0}
.sw-catalog__txt strong{display:block;font-family:var(--f-disp);font-size:1.1rem;color:#fff}
.sw-catalog__txt span{display:block;font-size:.9rem;color:#c9cfa6;margin-top:.15rem}
.sw-catalog__btn{background:#eef0d8;color:var(--sw-green);border-color:transparent}
.sw-catalog__btn:hover{background:#fff;color:var(--sw-green)}

/* =========================================================
   Lightbox (galeri büyütme) — global
   ========================================================= */
.lbx{position:fixed;inset:0;z-index:200;display:none;align-items:center;justify-content:center;
  background:rgba(14,17,9,.93);backdrop-filter:blur(2px);padding:clamp(1rem,4vw,3rem)}
.lbx.is-open{display:flex}
.lbx__stage{position:relative;max-width:94vw;max-height:88vh;display:flex;flex-direction:column;align-items:center;gap:.7rem}
.lbx__img{max-width:94vw;max-height:82vh;object-fit:contain;border-radius:4px;box-shadow:0 20px 60px -20px rgba(0,0,0,.8)}
.lbx__cap{color:#e7e4c4;font-size:.9rem;font-family:var(--f-mono);letter-spacing:.02em;text-align:center}
.lbx__btn{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border-radius:50%;
  border:1px solid rgba(255,255,255,.28);background:rgba(0,0,0,.4);color:#fff;font-size:1.5rem;line-height:1;
  cursor:pointer;display:flex;align-items:center;justify-content:center;transition:background .2s}
.lbx__btn:hover{background:rgba(0,0,0,.7)}
.lbx__prev{left:-4px}.lbx__next{right:-4px}
.lbx__close{position:fixed;top:1.1rem;right:1.2rem;transform:none;width:44px;height:44px;font-size:1.4rem}
.lbx__count{position:fixed;top:1.3rem;left:1.4rem;color:#cfcba6;font-family:var(--f-mono);font-size:.8rem}
@media(max-width:640px){.lbx__prev{left:0}.lbx__next{right:0}.lbx__btn{width:40px;height:40px}}
@media(prefers-reduced-motion:reduce){.sw-feat__img img,.sw-gallery__item img{transition:none}}