/* Tema: Eksen (sanayi). Yön: sessiz alet. Küçük, kesin gösterimler ve bol boşluk. */
:root {
  --bg: #ffffff;
  --surface: #f3f3f3;
  --ink: #232323;
  --muted: #5f5f5f;
  --accent: #a1ffcb;
  --accent-ink: #232323;

  --display: 'League Spartan', 'Arial Narrow', system-ui, sans-serif;
  --text: 'Figtree', system-ui, sans-serif;

  --step-small: clamp(0.875rem, 0.85rem + 0.1vw, 0.9375rem);
  --step-body: clamp(1.0625rem, 1rem + 0.25vw, 1.1875rem);
  --step-lead: clamp(1.25rem, 1.1rem + 0.7vw, 1.625rem);
  --step-head: clamp(2rem, 1.3rem + 2.4vw, 3.25rem);

  --m: clamp(16px, 2.4vw, 36px);
  --gap-section: clamp(96px, 13vw, 200px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 var(--step-body)/1.55 var(--text); -webkit-font-smoothing: antialiased; }
img { display: block; width: 100%; height: auto; }
figure, h1, h2, h3, p, dl, dd, ol, ul { margin: 0; padding: 0; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 3px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); background: var(--ink); color: #fff; z-index: 30; }
.skip:focus { width: auto; height: auto; clip: auto; left: var(--m); top: 8px; padding: 12px 16px; }
h2 { font: 700 var(--step-head)/0.95 var(--display); letter-spacing: -0.03em; }
.small { color: var(--muted); font-size: var(--step-small); }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; background: var(--accent); color: var(--accent-ink); font: 600 var(--step-body)/1 var(--text); text-decoration: none; border: 0; border-radius: 0; cursor: pointer; transition: transform .18s ease; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(1px); }

/* İlk ekran: fotoğraf, ortada tek çubuk */
.hero { position: relative; height: 100svh; min-height: 560px; overflow: hidden; background: #111; color: #fff; }
.hero-img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity 2.4s ease; filter: grayscale(1) contrast(1.05); }
.hero-img.on { opacity: 1; }
.hero::after { content: ""; position: absolute; inset: 0; background: rgba(0, 0, 0, 0.5); }
.rail { position: absolute; z-index: 2; left: 0; right: 0; top: 50%; transform: translateY(-50%); height: 64px; display: flex; align-items: center; gap: clamp(16px, 3vw, 40px); padding: 0 var(--m); }
.rail h1 { font: 700 clamp(26px, 2.6vw, 38px)/1 var(--display); letter-spacing: -0.03em; white-space: nowrap; }
.rail-line { flex: 1; font-size: var(--step-body); }
.rail nav { display: flex; align-items: center; gap: clamp(14px, 2vw, 28px); }
.rail nav a:not(.btn), .menu a { text-decoration: none; padding: 12px 0; }
.rail nav a:not(.btn):hover { text-decoration: underline; text-underline-offset: 5px; }
.menu { display: none; position: relative; margin-left: auto; }
.menu summary { list-style: none; cursor: pointer; min-height: 48px; display: flex; align-items: center; padding: 0 4px; font-weight: 600; }
.menu summary::-webkit-details-marker { display: none; }
.menu div { position: absolute; right: 0; top: 52px; display: grid; background: var(--ink); min-width: 190px; padding: 6px 16px; }
.hero-foot { display: none; }

/* Hassasiyet göstergesi */
.intro { padding: var(--gap-section) var(--m) 0; display: grid; grid-template-columns: 15% minmax(0, 420px) minmax(0, 1fr); gap: 0 var(--m); align-items: start; }
.intro-text { grid-column: 2; display: grid; gap: 1.1em; }
.intro-text h2 { margin-bottom: 8px; }
.intro-text p { max-width: 34em; }
.intro-text .first { color: var(--ink); font-weight: 600; font-size: var(--step-lead); line-height: 1.35; }
.tol { grid-column: 3; justify-self: end; width: min(100%, 720px); background: var(--surface); padding: clamp(24px, 3.4vw, 48px); display: grid; gap: 22px; }
.tol label { font-weight: 600; }
.tol input[type=range] { width: 100%; height: 44px; accent-color: var(--ink); cursor: pointer; }
.tol-out { font: 600 var(--step-lead)/1.25 var(--text); min-height: 2.6em; }
.tol-bars { display: grid; gap: 14px; }
.tol-row { display: grid; grid-template-columns: 9.5em 1fr; gap: 12px; align-items: center; color: var(--muted); font-size: var(--step-small); }
.bar { display: block; height: 28px; transition: width .35s cubic-bezier(.2,.7,.2,1); }
.bar-hair { background: var(--ink); width: 17.5%; }
.bar-band { background: var(--accent); width: 25%; }

/* Hakkımızda */
.about { padding: var(--gap-section) var(--m) 0; display: grid; grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); gap: var(--m); }
.facts { display: grid; gap: 28px; align-content: start; }
.facts dt { color: var(--muted); font-size: var(--step-small); }
.facts dd { font-weight: 600; font-size: var(--step-lead); line-height: 1.25; }
.about-text { display: grid; gap: clamp(32px, 5vw, 72px); }
.statement { font: 600 clamp(1.5rem, 1.1rem + 1.6vw, 2.25rem)/1.25 var(--text); max-width: 26em; }
.about figure { max-width: 880px; }
figcaption { margin-top: 10px; color: var(--muted); font-size: var(--step-small); max-width: 52ch; }

/* Yetenekler */
.list { padding: var(--gap-section) var(--m) 0; display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: calc(var(--m) * 2); align-items: start; }
.list-col { display: grid; gap: 28px; max-width: 620px; }
.rows { list-style: none; display: grid; gap: 6px; }
.rows li { display: flex; justify-content: space-between; gap: 20px; align-items: baseline; padding: 16px 18px; background: var(--surface); transition: background .2s ease, transform .2s ease; }
.rows li:hover { background: var(--accent); transform: translateX(6px); }
.rows span { font: 700 var(--step-lead)/1.1 var(--display); letter-spacing: -0.02em; }
.rows b { font-weight: 600; text-align: right; }
.list-pic { position: sticky; top: 24px; }

/* Süreç: fişe yazılmış */
.how { padding: var(--gap-section) var(--m) 0; display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); gap: calc(var(--m) * 2); align-items: start; }
.slip { background: var(--surface); padding: clamp(24px, 3.4vw, 48px); display: grid; gap: 24px; max-width: 520px; justify-self: end; width: 100%; }
.slip ol { list-style: none; display: grid; gap: 22px; }
.slip strong { display: block; font: 700 var(--step-lead)/1.15 var(--display); letter-spacing: -0.02em; }
.slip p { margin-top: 2px; }

/* Rakamlar: düz mint alan */
.stats { margin-top: var(--gap-section); background: var(--accent); color: var(--accent-ink); padding: clamp(56px, 8vw, 120px) var(--m); display: grid; gap: 32px; }
.stats dl { display: grid; gap: clamp(28px, 4vw, 56px); }
.stats dl > div { display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: var(--m); align-items: baseline; }
.stats dt { font: 700 clamp(3rem, 1.5rem + 7vw, 8rem)/0.9 var(--display); letter-spacing: -0.04em; }
.stats dd { font-size: var(--step-lead); max-width: 22em; }
.stats .small { color: var(--accent-ink); }

/* Sorular */
.faq { padding: var(--gap-section) var(--m) 0; display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: var(--m); }
.faq-text { max-width: 640px; display: grid; gap: 8px; }
.faq h3 { font: 600 var(--step-lead)/1.25 var(--text); margin-top: 28px; }
.faq h3:first-child { margin-top: 0; }
.faq p { max-width: 38em; }

/* Teklif: koyu alan */
.contact { margin-top: var(--gap-section); background: var(--ink); color: #fff; padding: clamp(64px, 9vw, 140px) var(--m); display: grid; grid-template-columns: minmax(0, 6fr) minmax(0, 6fr); gap: calc(var(--m) * 2); align-items: start; }
.contact h2 { font-size: clamp(2.25rem, 1.2rem + 4vw, 5rem); max-width: 10em; }
.links { display: grid; gap: 4px; margin-top: 28px; }
.links a { font-size: var(--step-lead); text-decoration: none; padding: 8px 0; width: fit-content; }
.links a:hover { text-decoration: underline; text-underline-offset: 6px; }
.quote { display: grid; gap: 22px; }
.quote fieldset { margin: 0; padding: 0; border: 0; display: grid; grid-template-columns: 1fr 1fr; gap: var(--m); }
.quote legend { padding: 0; margin-bottom: 12px; font-weight: 600; }
.quote label { display: grid; gap: 6px; font-weight: 600; }
.quote input, .quote select { font: 400 var(--step-body)/1 var(--text); color: #fff; background: #3a3a3a; border: 0; border-radius: 0; min-height: 52px; padding: 0 14px; width: 100%; color-scheme: dark; }
.quote .btn { justify-self: start; }
.hint { color: #c9c9c9; font-size: var(--step-small); }

.foot { padding: 28px var(--m) 36px; display: grid; gap: 12px; }
.foot p { max-width: 64ch; }
.credit { color: var(--muted); font-size: var(--step-small); max-width: 70ch; }

/* Hareket */
.js [data-rise] { opacity: 0; transform: translateY(24px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); transition-delay: calc(var(--i, 0) * 80ms); }
.js [data-rise].in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js [data-rise] { opacity: 1; transform: none; transition: none; }
  .hero-img { transition: none; }
  .btn, .rows li, .bar { transition: none; }
}

@media (max-width: 860px) {
  .rail { height: auto; min-height: 64px; display: grid; grid-template-columns: 1fr auto; gap: 8px 16px; align-items: start; }
  .rail h1 { white-space: normal; font-size: clamp(36px, 8vw, 52px); max-width: 7em; }
  .rail-line { grid-column: 1; font-size: 18px; max-width: 18em; }
  .rail nav { display: none; }
  .menu { display: block; grid-row: 1; grid-column: 2; }
  .hero-foot { position: absolute; z-index: 2; left: var(--m); right: var(--m); bottom: 28px; display: grid; gap: 16px; }
  .hero-foot p { display: none; }
  .hero-foot .btn { width: 100%; }
  .facts { order: 2; }
  .intro { grid-template-columns: 1fr; gap: 40px; }
  .intro-text, .tol { grid-column: 1; }
  .tol { justify-self: stretch; }
  .tol-row { grid-template-columns: 7.5em 1fr; }
  .about, .faq { grid-template-columns: 1fr; }
  .list, .how, .contact { grid-template-columns: 1fr; gap: 40px; }
  .list-pic { position: static; order: 2; }
  .slip { justify-self: stretch; max-width: none; }
  .stats dl > div { grid-template-columns: 1fr; gap: 8px; }
  .quote fieldset { grid-template-columns: 1fr 1fr; }
}