/* ============================================================
   HEPTA GRUP — Laboratuvar Altyapısı · TLC İzolasyon Kabinleri
   Design language: teknik / blueprint · serin camgöbeği + mürekkep
   (E-Trend'in TAM zıttı: hassas grid, monospace, ölçüm estetiği)
   ============================================================ */

:root {
  --cyan:      #37cadd;   /* brand */
  --cyan-deep: #109fb6;
  --cyan-ink:  #0a7689;
  --ink:       #0c1b22;   /* slate-black */
  --ink-2:     #0f2530;
  --slate:     #4a5a63;
  --slate-2:   #8499a2;
  --paper:     #f2f7f8;   /* cool paper */
  --paper-2:   #e6eef0;
  --white:     #ffffff;
  --grid:      rgba(12,27,34,.06);
  --grid-dk:   rgba(55,202,221,.16);

  --radius: 4px;          /* sharper, technical */
  --maxw: 1280px;
  --gut: clamp(20px, 5vw, 72px);

  --f-head: "IBM Plex Sans", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, monospace;
  --f-body: "IBM Plex Sans", system-ui, sans-serif;

  --ease: cubic-bezier(.65,.02,.18,1);
  --ease-out: cubic-bezier(.16,1,.3,1);
}

*,*::before,*::after { box-sizing: border-box; }
* { margin: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--f-body); background: var(--paper); color: var(--ink);
  line-height: 1.6; font-size: 16.5px; -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility; overflow-x: hidden;
}
img,svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
ul { list-style: none; padding: 0; }
h1,h2,h3,h4 { font-family: var(--f-head); font-weight: 600; line-height: 1.08; letter-spacing: -.018em; }

.wrap { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
section[id], header[id] { scroll-margin-top: 84px; }
.cons .ic svg, .cmeta .ic svg { width: 22px; height: 22px; display: block; }

/* mono label — the technical signature */
.lab {
  font-family: var(--f-mono); font-weight: 500; font-size: .72rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--cyan-ink);
  display: inline-flex; align-items: center; gap: .6em;
}
.lab::before { content: "[ "; opacity: .5; }
.lab::after  { content: " ]"; opacity: .5; }
.lab.on-dark { color: var(--cyan); }

/* ---------- BUTTONS ---------- */
.btn {
  --bg: var(--cyan); --fg: #042026;
  position: relative; display: inline-flex; align-items: center; gap: .7em;
  padding: .92em 1.5em; border-radius: var(--radius);
  font-family: var(--f-mono); font-weight: 500; font-size: .85rem; letter-spacing: .04em;
  background: var(--bg); color: var(--fg); overflow: hidden; isolation: isolate;
  transition: transform .35s var(--ease), box-shadow .4s var(--ease), color .3s;
}
.btn .arr { transition: transform .4s var(--ease-out); }
.btn::before { content:""; position: absolute; inset: 0; z-index: -1; background: var(--ink); transform: translateX(-101%); transition: transform .45s var(--ease); }
.btn:hover { color: #fff; box-shadow: 0 14px 34px -16px rgba(16,159,182,.7); }
.btn:hover::before { transform: translateX(0); }
.btn:hover .arr { transform: translateX(4px); }
.btn--ghost { --bg: transparent; --fg: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.btn--ghost::before { background: var(--cyan); }
.btn--ghost:hover { color: #042026; box-shadow: inset 0 0 0 1px transparent; }
.btn--dark { --bg: var(--ink); --fg: #fff; }
.btn--dark::before { background: var(--cyan); }
.btn--dark:hover { color: #042026; }

/* ============================================================
   BOOT — blueprint assembly of the prism mark
   ============================================================ */
#boot {
  position: fixed; inset: 0; z-index: 9999; background: #07171d;
  display: grid; place-items: center; overflow: hidden;
  transition: opacity .6s var(--ease), visibility .6s;
}
#boot.gone { opacity: 0; visibility: hidden; pointer-events: none; }
#boot::before { /* blueprint grid */
  content:""; position: absolute; inset: -2px;
  background-image: linear-gradient(var(--grid-dk) 1px, transparent 1px), linear-gradient(90deg, var(--grid-dk) 1px, transparent 1px);
  background-size: 38px 38px; opacity: .5;
  mask-image: radial-gradient(60% 60% at 50% 50%, #000 30%, transparent 75%);
  animation: bgrid 1.4s var(--ease) forwards; transform: scale(1.08);
}
@keyframes bgrid { from { opacity: 0; } to { opacity: .5; } }
.boot-stage { position: relative; width: min(70vw, 380px); aspect-ratio: 1; display: grid; place-items: center; }
.boot-cross { position: absolute; inset: 0; }
.boot-cross line { stroke: rgba(55,202,221,.4); stroke-width: 1; stroke-dasharray: 4 5; opacity: 0; animation: bcross .8s var(--ease) .2s forwards; }
@keyframes bcross { to { opacity: 1; } }
.boot-draw path, .boot-draw line { fill: none; stroke: var(--cyan); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round;
  stroke-dasharray: 1; stroke-dashoffset: 1; pathLength: 1; animation: bdraw 1.1s var(--ease) .45s forwards; filter: drop-shadow(0 0 8px rgba(55,202,221,.5)); }
.boot-draw .d2 { animation-delay: .68s; } .boot-draw .d3 { animation-delay: .9s; }
@keyframes bdraw { to { stroke-dashoffset: 0; } }
.boot-tick { position: absolute; font-family: var(--f-mono); font-size: .6rem; color: rgba(55,202,221,.7); opacity: 0; animation: btick .5s var(--ease) 1.5s forwards; }
.boot-tick.t1 { top: 6%; left: 6%; } .boot-tick.t2 { bottom: 6%; right: 6%; }
@keyframes btick { to { opacity: 1; } }
.boot-word { position: absolute; bottom: -20%; left: 50%; transform: translateX(-50%);
  font-family: var(--f-mono); letter-spacing: .42em; text-transform: uppercase; font-size: clamp(.66rem,2.2vw,.9rem);
  color: #fff; opacity: 0; white-space: nowrap; animation: bword .7s var(--ease) 1.5s forwards; }
.boot-word b { color: var(--cyan); }
@keyframes bword { to { opacity: .9; } }
.boot-bar { position: absolute; bottom: 34px; left: 50%; transform: translateX(-50%); width: 180px; height: 2px; background: rgba(55,202,221,.18); overflow: hidden; }
.boot-bar i { position: absolute; inset: 0; width: 100%; background: var(--cyan); transform-origin: left; transform: scaleX(0); animation: bbar 2.2s var(--ease) forwards; }
@keyframes bbar { to { transform: scaleX(1); } }
.boot-skip { position: absolute; bottom: 26px; right: 28px; color: rgba(255,255,255,.5); font-family: var(--f-mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; transition: color .3s; }
.boot-skip:hover { color: var(--cyan); }
body.booting { overflow: hidden; }

/* ============================================================
   NAV — technical, indexed
   ============================================================ */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 1.5rem;
  padding: 1rem var(--gut); transition: background .4s var(--ease), padding .4s, box-shadow .4s, backdrop-filter .4s; }
.nav.scrolled { background: rgba(242,247,248,.85); backdrop-filter: blur(14px); box-shadow: 0 1px 0 var(--grid), 0 18px 40px -36px rgba(12,27,34,.6); padding-block: .65rem; }
.nav-logo img { height: 34px; width: auto; }
.nav-logo .l-light { display: block; } .nav-logo .l-dark { display: none; }
.nav.scrolled .nav-logo .l-light { display: none; } .nav.scrolled .nav-logo .l-dark { display: block; }
.nav-links { display: flex; align-items: center; justify-content: center; gap: .2rem; }
.nav-links a { position: relative; display: inline-flex; align-items: baseline; gap: .45em; padding: .55em .9em;
  font-family: var(--f-mono); font-size: .82rem; letter-spacing: .02em; color: rgba(255,255,255,.82); transition: color .3s; }
.nav-links a .n { font-size: .62rem; color: var(--cyan); opacity: .8; }
.nav.scrolled .nav-links a { color: var(--slate); }
.nav-links a:hover { color: var(--cyan); }
.nav.scrolled .nav-links a:hover { color: var(--cyan-ink); }
.nav-right { display: flex; align-items: center; gap: .7rem; }
.lang { display: inline-flex; gap: 1px; padding: 2px; border: 1px solid rgba(255,255,255,.22); border-radius: var(--radius); }
.nav.scrolled .lang { border-color: var(--grid); }
.lang button { padding: .32em .6em; font-family: var(--f-mono); font-size: .72rem; color: rgba(255,255,255,.78); border-radius: 2px; transition: all .25s; }
.nav.scrolled .lang button { color: var(--slate); }
.lang button.active { background: var(--cyan); color: #042026; }
.nav .btn { padding: .6em 1.05em; font-size: .76rem; }
.burger { display: none; width: 42px; height: 42px; position: relative; }
.burger span { position: absolute; left: 10px; right: 10px; height: 2px; background: #fff; transition: .3s var(--ease); }
.nav.scrolled .burger span { background: var(--ink); }
.burger span:nth-child(1){top:15px}.burger span:nth-child(2){top:21px}.burger span:nth-child(3){top:27px}
.burger.active span:nth-child(1){top:21px;transform:rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){top:21px;transform:rotate(-45deg)}

/* ============================================================
   HERO — blueprint precision
   ============================================================ */
.hero { position: relative; min-height: 100svh; display: flex; align-items: center; color: #fff; overflow: hidden;
  background: radial-gradient(130% 100% at 80% 0%, #103441 0%, #0a212a 50%, #07161c 100%); }
.hero-grid { position: absolute; inset: 0; z-index: 0; opacity: .5;
  background-image: linear-gradient(var(--grid-dk) 1px, transparent 1px), linear-gradient(90deg, var(--grid-dk) 1px, transparent 1px);
  background-size: 52px 52px; mask-image: radial-gradient(120% 90% at 75% 10%, #000 25%, transparent 80%); }
.hero-scan { position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: linear-gradient(180deg, transparent, rgba(55,202,221,.06) 50%, transparent); height: 40%;
  animation: scan 6s var(--ease) infinite; }
@keyframes scan { 0%{transform:translateY(-60%)} 100%{transform:translateY(280%)} }
.hero-cross { position: absolute; z-index: 1; inset: 0; pointer-events:none; }
.hero-cross::before, .hero-cross::after { content:""; position: absolute; background: rgba(55,202,221,.25); }
.hero-cross::before { left: 12%; top: 0; bottom: 0; width: 1px; }
.hero-cross::after { right: 18%; top: 0; bottom: 0; width: 1px; }
.hero .wrap { position: relative; z-index: 3; padding-top: 9rem; padding-bottom: 4rem; width: 100%; }
.hero-meta { display: flex; gap: 1.4rem; flex-wrap: wrap; font-family: var(--f-mono); font-size: .72rem; color: var(--cyan); margin-bottom: 1.5rem; opacity: .85; }
.hero-meta span { display: inline-flex; align-items: center; gap: .5em; }
.hero-meta span::before { content:"›"; opacity: .6; }
.hero h1 { font-size: clamp(2.5rem, 6.4vw, 5.4rem); letter-spacing: -.03em; max-width: 17ch; font-weight: 600; }
.hero h1 .accent { color: var(--cyan); }
.hero-sub { margin-top: 1.5rem; max-width: 56ch; color: rgba(255,255,255,.78); font-size: clamp(1rem,1.6vw,1.18rem); }
.hero-cta { margin-top: 2.2rem; display: flex; flex-wrap: wrap; gap: .8rem; }
.hero-rail { position: relative; z-index: 3; margin-top: clamp(2.6rem,6vw,4rem); border-top: 1px solid rgba(55,202,221,.2);
  display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: rgba(55,202,221,.14); }
.hrail { background: transparent; padding: 1.5rem .4rem .3rem; }
.hrail b { font-family: var(--f-head); font-weight: 600; font-size: clamp(1.5rem,3vw,2.3rem); display:block; line-height:1; }
.hrail b .u { color: var(--cyan); font-family: var(--f-mono); font-size: .7em; }
.hrail span { font-family: var(--f-mono); font-size: .72rem; color: rgba(255,255,255,.55); letter-spacing: .03em; }

/* ============================================================
   SECTION SHELL
   ============================================================ */
.section { padding: clamp(4.5rem,9vw,8rem) 0; position: relative; }
.section.lined::before { content:""; position: absolute; top:0; left: var(--gut); right: var(--gut); height: 1px; background: var(--grid); }
.section-head { max-width: 66ch; margin-bottom: clamp(2.4rem,5vw,3.4rem); }
.section-head h2 { font-size: clamp(1.9rem,4.2vw,3.1rem); margin-top: .9rem; }
.section-head p { margin-top: 1rem; color: var(--slate); font-size: 1.04rem; max-width: 58ch; }
.section.dark { background: var(--ink); color: #fff; }
.section.dark .section-head p { color: var(--slate-2); }

.reveal { opacity: 0; transform: translateY(20px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1{transition-delay:.07s}.reveal.d2{transition-delay:.14s}.reveal.d3{transition-delay:.21s}.reveal.d4{transition-delay:.28s}.reveal.d5{transition-delay:.35s}

/* ============================================================
   ABOUT
   ============================================================ */
.about { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,4.5rem); align-items: center; }
.about-copy h2 { font-size: clamp(1.9rem,3.8vw,2.7rem); }
.about-copy p { color: var(--slate); margin-top: 1.1rem; }
.about-specs { margin-top: 1.8rem; display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--grid); border: 1px solid var(--grid); }
.aspec { background: var(--paper); padding: 1.1rem 1.2rem; }
.aspec b { font-family: var(--f-head); font-weight: 600; font-size: 1.8rem; color: var(--cyan-ink); display:block; line-height:1; }
.aspec span { font-family: var(--f-mono); font-size: .72rem; color: var(--slate); letter-spacing: .03em; }
.about-figure { position: relative; border: 1px solid var(--grid); border-radius: var(--radius); overflow: hidden; min-height: 440px; background: #fff;
  background-image: linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px); background-size: 28px 28px; }
.about-figure .blue { position: absolute; inset: 0; display: grid; place-items: center; }
.about-figure .blue svg { width: 64%; filter: drop-shadow(0 10px 30px rgba(16,159,182,.25)); }
.about-figure .corner { position: absolute; width: 16px; height: 16px; border: 2px solid var(--cyan); }
.about-figure .corner.tl{top:14px;left:14px;border-right:0;border-bottom:0}
.about-figure .corner.tr{top:14px;right:14px;border-left:0;border-bottom:0}
.about-figure .corner.bl{bottom:14px;left:14px;border-right:0;border-top:0}
.about-figure .corner.br{bottom:14px;right:14px;border-left:0;border-top:0}
.about-figure .dim { position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%); font-family: var(--f-mono); font-size: .7rem; color: var(--cyan-ink); letter-spacing: .1em; }

/* ============================================================
   PRODUCTS — TLC cabinet spec catalog
   ============================================================ */
.tlc-brand { display: inline-flex; align-items: center; gap: .7rem; margin-bottom: 1rem; }
.tlc-brand img { height: 26px; }
.prod-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--grid); border: 1px solid var(--grid); }
.prod { background: var(--paper); padding: clamp(1.5rem,3vw,2.2rem); position: relative; transition: background .4s var(--ease); overflow: hidden; }
.prod:hover { background: #fff; }
.prod::after { content:""; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--cyan); transform: scaleY(0); transform-origin: top; transition: transform .45s var(--ease); }
.prod:hover::after { transform: scaleY(1); }
.prod-code { font-family: var(--f-mono); font-size: .76rem; color: var(--cyan-ink); letter-spacing: .08em; }
.prod h3 { font-size: 1.35rem; margin-top: .5rem; }
.prod p { color: var(--slate); font-size: .95rem; margin-top: .6rem; }
.prod-spec { margin-top: 1.1rem; display: grid; gap: .35rem; font-family: var(--f-mono); font-size: .76rem; color: var(--slate); }
.prod-spec div { display: flex; justify-content: space-between; gap: 1rem; padding-bottom: .35rem; border-bottom: 1px dashed var(--grid); }
.prod-spec div b { color: var(--ink); font-weight: 600; }
.prod-no { position: absolute; top: 1.4rem; right: 1.6rem; font-family: var(--f-mono); font-size: .8rem; color: var(--grid-dk); }

/* feature wide product */
.prod.wide { grid-column: 1 / -1; display: grid; grid-template-columns: 1.1fr 1fr; gap: clamp(1.5rem,4vw,3rem); align-items: center; }
.prod.wide .fig { aspect-ratio: 4/3; border: 1px solid var(--grid); background: #fff;
  background-image: linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px); background-size: 24px 24px;
  display: grid; place-items: center; position: relative; }
.prod.wide .fig svg { width: 52%; }

/* ============================================================
   CONSUMABLES (sarflar)
   ============================================================ */
.cons-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--grid); border: 1px solid var(--grid); }
.cons { background: var(--paper); padding: 1.6rem 1.3rem; transition: .4s var(--ease); }
.cons:hover { background: var(--ink); color: #fff; }
.cons .ic { width: 44px; height: 44px; border: 1px solid var(--cyan); border-radius: var(--radius); display: grid; place-items: center; color: var(--cyan-ink); margin-bottom: 1rem; transition: .4s; }
.cons:hover .ic { color: var(--cyan); border-color: var(--cyan); }
.cons h3 { font-size: 1.08rem; }
.cons p { font-family: var(--f-mono); font-size: .76rem; color: var(--slate); margin-top: .5rem; }
.cons:hover p { color: var(--slate-2); }

/* ============================================================
   PROJECTS / capabilities band (dark)
   ============================================================ */
.cap { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,4rem); align-items: center; }
.cap-list { display: grid; gap: 1px; background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.08); }
.cap-item { background: var(--ink-2); padding: 1.3rem 1.5rem; display: grid; grid-template-columns: auto 1fr; gap: 1.2rem; align-items: baseline; transition: background .4s; }
.cap-item:hover { background: #14323d; }
.cap-item .n { font-family: var(--f-mono); font-size: .8rem; color: var(--cyan); }
.cap-item h3 { font-size: 1.15rem; }
.cap-item p { color: var(--slate-2); font-size: .9rem; margin-top: .3rem; }

/* ============================================================
   QUALITY / certs
   ============================================================ */
.qa-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1px; background: var(--grid); border: 1px solid var(--grid); }
.qa { background: var(--paper); padding: 1.8rem 1.4rem; text-align: left; }
.qa b { font-family: var(--f-head); font-weight: 600; font-size: 2.4rem; color: var(--cyan-ink); display: block; line-height: 1; }
.qa b .u { font-family: var(--f-mono); font-size: .42em; color: var(--cyan-ink); }
.qa span { font-family: var(--f-mono); font-size: .76rem; color: var(--slate); letter-spacing: .03em; display: block; margin-top: .6rem; }

/* ============================================================
   CONTACT
   ============================================================ */
.cta { background: var(--ink); color: #fff; position: relative; overflow: hidden; }
.cta .hero-grid { opacity: .35; }
.contact { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem,5vw,4rem); position: relative; z-index: 2; }
.contact h2 { font-size: clamp(2rem,4.4vw,3rem); }
.contact-lead { color: var(--slate-2); margin-top: 1rem; max-width: 42ch; }
.contact-meta { margin-top: 2rem; display: grid; gap: 1.1rem; }
.cmeta { display: grid; grid-template-columns: auto 1fr; gap: .9rem; align-items: start; }
.cmeta .ic { width: 40px; height: 40px; border: 1px solid rgba(55,202,221,.4); border-radius: var(--radius); display: grid; place-items: center; color: var(--cyan); }
.cmeta b { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .08em; color: var(--cyan); text-transform: uppercase; display: block; }
.cmeta a, .cmeta span { color: #fff; font-size: .98rem; }
.cmeta a { display: block; }
.cmeta a:hover { color: var(--cyan); }
.form { background: rgba(255,255,255,.03); border: 1px solid rgba(255,255,255,.1); border-radius: var(--radius); padding: clamp(1.5rem,3vw,2.2rem); }
.field { margin-bottom: 1rem; }
.field label { display: block; font-family: var(--f-mono); font-size: .74rem; letter-spacing: .04em; color: rgba(255,255,255,.65); margin-bottom: .45rem; }
.field input, .field textarea { width: 100%; padding: .85em 1em; border-radius: var(--radius); background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.12); color: #fff; font: inherit; transition: border .3s, background .3s; }
.field input::placeholder, .field textarea::placeholder { color: rgba(255,255,255,.38); }
.field input:focus, .field textarea:focus { outline: none; border-color: var(--cyan); background: rgba(255,255,255,.08); }
.field textarea { resize: vertical; min-height: 110px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* ============================================================
   FOOTER
   ============================================================ */
.footer { background: #061319; color: rgba(255,255,255,.66); padding: clamp(3rem,6vw,5rem) 0 2rem; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 2.5rem; }
.footer-logo img { height: 36px; margin-bottom: 1.2rem; }
.footer p { font-size: .92rem; max-width: 40ch; font-family: var(--f-body); }
.footer h4 { font-family: var(--f-mono); font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(255,255,255,.45); margin-bottom: 1rem; }
.footer-links a { display: block; padding: .32em 0; font-size: .92rem; transition: color .3s, padding .3s; }
.footer-links a:hover { color: var(--cyan); padding-left: .35em; }
.footer-bottom { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,.08); display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; font-size: .82rem; color: rgba(255,255,255,.42); font-family: var(--f-mono); }
.optimum-credit { font-size: .78rem; }
.optimum-credit a { color: rgba(255,255,255,.62); border-bottom: 1px solid rgba(255,255,255,.2); transition: color .3s, border-color .3s; }
.optimum-credit a:hover { color: var(--cyan); border-color: var(--cyan); }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1000px) {
  .about, .cap, .contact { grid-template-columns: 1fr; }
  .prod-grid, .qa-grid { grid-template-columns: 1fr 1fr; }
  .cons-grid { grid-template-columns: repeat(2,1fr); }
  .hero-rail { grid-template-columns: repeat(2,1fr); }
  .prod.wide { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 760px) {
  .prod-grid, .qa-grid, .cons-grid, .form-row, .about-specs { grid-template-columns: 1fr; }
  .hero-rail { grid-template-columns: 1fr 1fr; }
  .footer-top { grid-template-columns: 1fr; }
}
.nav-mobile { display: none; }
/* nav erken hamburger'e dönsün — uzun TR etiketleri 760-1000px arası sığmıyor */
@media (max-width: 1000px) {
  .nav { grid-template-columns: auto auto; }
  .nav-links, .nav .btn.nav-cta { display: none; }
  .burger { display: block; }
  .nav-mobile { position: fixed; inset: 0; z-index: 190; background: rgba(7,22,28,.98); backdrop-filter: blur(18px);
    display: flex; flex-direction: column; justify-content: center; gap: .3rem; padding: var(--gut); transform: translateX(100%); transition: transform .45s var(--ease); }
  .nav-mobile.open { transform: none; }
  .nav-mobile a { color: #fff; font-family: var(--f-head); font-weight: 600; font-size: 1.6rem; padding: .35em 0; border-bottom: 1px solid rgba(255,255,255,.1); }
  .nav-mobile a .n { font-family: var(--f-mono); font-size: .8rem; color: var(--cyan); margin-right: .6rem; }
}

/* ---- mobile polish ---- */
@media (max-width: 760px) {
  .hero h1 { font-size: clamp(2rem, 8.4vw, 2.8rem); overflow-wrap: break-word; }
  .hero .wrap { padding-top: 7.5rem; min-width: 0; }
  .hero-sub { font-size: 1rem; max-width: 100%; }
  .hero-meta { gap: .9rem; font-size: .66rem; }
  .hero-cta { gap: .6rem; }
  .hero-cta .btn { flex: 1 1 100%; justify-content: center; }
  .section-head h2 { font-size: clamp(1.6rem, 6.6vw, 2.1rem); }
  .lab { flex-wrap: wrap; }
  .cap .btn { width: 100%; justify-content: center; }
  .nav { padding-inline: 18px; }
}
@media (max-width: 380px) {
  .hero h1 { font-size: 1.85rem; }
  .hero-rail { grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}