:root {
  --navy-900: #0a1f33;
  --navy-800: #0f2c46;
  --navy-700: #16405f;
  --steel-500: #5b7d99;
  --steel-300: #9db3c5;
  --sand: #b81f3a;
  --ink: #16232e;
  --muted: #5c6b78;
  --line: #dfe5ea;
  --bg: #ffffff;
  --bg-alt: #f4f7f9;
  --wrap: 1320px;
  --font: "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* --- Üst bar --- */
.topbar {
  background: var(--navy-900);
  color: var(--steel-300);
  font-size: 13px;
  border-bottom: 1px solid rgba(255,255,255,.08);
}
.topbar .wrap { display: flex; justify-content: space-between; align-items: center; gap: 16px; min-height: 40px; flex-wrap: wrap; }
.topbar a { text-decoration: none; }
.topbar a:hover { color: #fff; }
.lang { display: flex; gap: 10px; align-items: center; }
.lang a { padding: 2px 6px; border-radius: 3px; letter-spacing: .06em; }
.lang a[aria-current="true"] { background: rgba(255,255,255,.12); color: #fff; }

/* --- Başlık / menü --- */
.masthead { background: var(--navy-900); color: #fff; position: sticky; top: 0; z-index: 50; }
.masthead .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 76px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: #fff; }
.brand svg { flex: none; }
.brand b { display: block; font-size: 17px; letter-spacing: .10em; text-transform: uppercase; font-weight: 600; line-height: 1.2; }
.brand span { display: block; font-size: 11px; letter-spacing: .18em; text-transform: uppercase; color: var(--steel-300); font-weight: 400; }

nav ul { display: flex; gap: 28px; list-style: none; margin: 0; padding: 0; }
nav a { text-decoration: none; font-size: 14px; letter-spacing: .04em; color: #dbe6ee; padding: 6px 0; border-bottom: 2px solid transparent; }
nav a:hover { color: #fff; border-bottom-color: var(--sand); }

.menu-btn { display: none; background: none; border: 1px solid rgba(255,255,255,.3); color: #fff; border-radius: 4px; padding: 8px 12px; font-size: 14px; cursor: pointer; }

/* --- Hero --- */
.hero {
  background:
    linear-gradient(180deg, rgba(10,31,51,.86) 0%, rgba(10,31,51,.94) 100%),
    radial-gradient(1200px 500px at 70% -10%, #1d5f8a 0%, transparent 60%),
    var(--navy-800);
  color: #fff;
  padding: 96px 0 88px;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: ""; position: absolute; inset: auto 0 0 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--sand), transparent); opacity: .5;
}
.eyebrow { font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--sand); margin: 0 0 18px; }
.hero h1 { font-size: clamp(32px, 4.6vw, 52px); line-height: 1.12; margin: 0 0 20px; font-weight: 600; max-width: 18ch; letter-spacing: -.01em; }
.hero p { font-size: clamp(16px, 1.6vw, 19px); color: #c6d6e2; max-width: 60ch; margin: 0 0 34px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.btn { display: inline-block; padding: 13px 26px; border-radius: 3px; text-decoration: none; font-size: 15px; letter-spacing: .03em; transition: .15s; }
.btn-primary { background: var(--sand); color: #fff; font-weight: 600; }
.btn-primary:hover { background: #9f1b32; }
.btn-ghost { border: 1px solid rgba(255,255,255,.35); color: #fff; }
.btn-ghost:hover { border-color: #fff; background: rgba(255,255,255,.07); }

/* --- Bölüm ortak --- */
section { padding: 84px 0; }
.section-alt { background: var(--bg-alt); }
.label { font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--steel-500); margin: 0 0 14px; }
h2 { font-size: clamp(26px, 3vw, 36px); line-height: 1.2; margin: 0 0 18px; font-weight: 600; letter-spacing: -.01em; }
.lede { font-size: 17px; color: var(--muted); max-width: 62ch; margin: 0 0 44px; }

/* --- Hizmet kartları --- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card { background: #fff; padding: 34px 30px; }
.card .ico { color: var(--navy-700); margin-bottom: 18px; }
.card h3 { font-size: 18px; margin: 0 0 10px; font-weight: 600; }
.card p { font-size: 15px; color: var(--muted); margin: 0; }

/* --- Sayılar / alanlar --- */
.sectors { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; }
.sector h3 { font-size: 17px; margin: 0 0 8px; font-weight: 600; }
.sector p { font-size: 15px; color: var(--muted); margin: 0; }
.sector { border-top: 3px solid var(--navy-700); padding-top: 18px; }

/* --- Hakkımızda --- */
.split { display: grid; grid-template-columns: 1.1fr 1fr; gap: 64px; align-items: start; }
.facts { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.facts li { display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
.facts b { font-weight: 600; }
.facts span { color: var(--muted); text-align: right; }

/* --- Hazırlanıyor kutusu --- */
.soon { border: 1px dashed var(--steel-300); background: #fff; padding: 40px; text-align: center; border-radius: 4px; }
.soon p { color: var(--muted); margin: 0 0 6px; }

/* --- İletişim --- */
.contact { background: var(--navy-900); color: #fff; }
.contact h2 { color: #fff; }
.contact .lede { color: #b8cbdb; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.cinfo { list-style: none; margin: 0; padding: 0; }
.cinfo li { padding: 16px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.cinfo strong { display: block; font-size: 12px; letter-spacing: .16em; text-transform: uppercase; color: var(--sand); font-weight: 600; margin-bottom: 5px; }
.cinfo a { text-decoration: none; }
.cinfo a:hover { text-decoration: underline; }
.cinfo em { font-style: normal; color: var(--steel-300); }

form label { display: block; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--steel-300); margin: 0 0 6px; }
form input, form textarea {
  width: 100%; padding: 12px 14px; margin-bottom: 18px; font: inherit; font-size: 15px;
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.18); border-radius: 3px; color: #fff;
}
form input:focus, form textarea:focus { outline: none; border-color: var(--sand); background: rgba(255,255,255,.1); }
form textarea { min-height: 120px; resize: vertical; }

/* --- Alt bilgi --- */
footer { background: #061726; color: var(--steel-300); font-size: 14px; padding: 34px 0; }
footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
footer a { text-decoration: none; }
footer a:hover { color: #fff; }

/* --- Mobil --- */
@media (max-width: 900px) {
  .grid-3, .sectors, .split, .contact-grid { grid-template-columns: 1fr; }
  .split, .contact-grid { gap: 40px; }
  .sectors { gap: 28px; }
  section { padding: 60px 0; }
  .hero { padding: 66px 0 60px; }
  nav { display: none; }
  nav.open { display: block; position: absolute; top: 100%; left: 0; right: 0; background: var(--navy-800); border-top: 1px solid rgba(255,255,255,.1); }
  nav.open ul { flex-direction: column; gap: 0; padding: 8px 24px 20px; }
  nav.open a { display: block; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.08); }
  .menu-btn { display: block; }
  .masthead .wrap { position: relative; }
}

/* ============================================================
   GİRİŞ SAHNESİ — su hattı animasyonu
   ============================================================ */
.hero { padding-bottom: 300px; }
.hero .wrap { position: relative; z-index: 2; }

.hero-scene {
  position: absolute; left: 0; right: 0; bottom: 0; z-index: 1;
  pointer-events: none; line-height: 0;
}
.hero-scene svg { width: 100%; height: auto; display: block; }

.js .hero-scene .draw {
  stroke-dasharray: 1; stroke-dashoffset: 1;
  animation: draw 1.8s cubic-bezier(.4,.1,.2,1) forwards;
}
.js .hero-scene .d2 { animation-delay: .55s; animation-duration: 1.1s; }
.js .hero-scene .d3 { animation-delay: .95s; animation-duration: 1.1s; }
.js .hero-scene .d4 { animation-delay: 1.35s; animation-duration: 1.3s; }
.js .hero-scene .fade { opacity: 0; animation: fadein 1.4s ease forwards; animation-delay: 1.2s; }


@keyframes draw   { to { stroke-dashoffset: 0; } }
@keyframes fadein { to { opacity: 1; } }
@keyframes bob    { from { transform: translateY(0); } to { transform: translateY(5px); } }

.js .hero h1, .js .hero .eyebrow, .js .hero p, .js .hero-actions { animation: rise .9s cubic-bezier(.2,.7,.3,1) both; }
.hero .eyebrow    { animation-delay: .05s; }
.hero h1          { animation-delay: .18s; }
.hero > .wrap > p { animation-delay: .32s; }
.hero-actions     { animation-delay: .46s; }
@keyframes rise { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }

/* ============================================================
   DERİNLİK ÖLÇEĞİ — hizmetler
   ============================================================ */
.depth-grid { display: grid; grid-template-columns: 190px 1fr; gap: 56px; align-items: start; }

.ruler-col { position: sticky; top: 120px; }
.ruler { position: relative; height: 420px; padding-left: 62px; }
.ruler::before {
  content: ""; position: absolute; left: 54px; top: 0; bottom: 0; width: 2px;
  background: linear-gradient(180deg, var(--steel-300), var(--navy-700));
}
.ruler-dot {
  position: absolute; left: 48px; top: 6%; width: 14px; height: 14px; margin-top: -7px;
  border-radius: 50%; background: var(--sand); box-shadow: 0 0 0 5px rgba(201,162,39,.22);
  transition: top .55s cubic-bezier(.4,.1,.2,1);
}
.ruler-marks { list-style: none; margin: 0; padding: 0; }
.ruler-marks li {
  position: absolute; left: 0; top: var(--p); transform: translateY(-50%);
  width: 46px; text-align: right; font-size: 13px; font-variant-numeric: tabular-nums;
  color: var(--steel-500); transition: color .35s, font-weight .35s;
}
.ruler-marks li::after {
  content: ""; position: absolute; right: -14px; top: 50%; width: 10px; height: 1px;
  background: var(--steel-300);
}
.ruler-marks li.on { color: var(--navy-900); font-weight: 700; }
.ruler-caption { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--steel-500); margin: 18px 0 0; }

.depth-items { display: grid; gap: 8px; }
.js .depth-item { opacity: .5; }
.depth-item {
  display: grid; grid-template-columns: 78px 1fr; gap: 26px; align-items: start;
  padding: 34px 30px 34px 0; border-bottom: 1px solid var(--line);
  transition: opacity .45s;
}
.depth-item:last-child { border-bottom: 0; }
.depth-item.on { opacity: 1; }
.depth-item .m { font-size: 15px; font-weight: 700; color: var(--navy-700); font-variant-numeric: tabular-nums; padding-top: 2px; }
.depth-item h3 { font-size: 20px; margin: 0 0 8px; font-weight: 600; }
.depth-item p { margin: 0 0 12px; color: var(--muted); font-size: 15px; }
.depth-item ul { margin: 0; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 8px; }
.depth-item li { font-size: 13px; color: var(--steel-500); border: 1px solid var(--line); border-radius: 20px; padding: 3px 12px; }

/* Karadaki hizmetler */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }

/* ============================================================
   KAYDIRINCA BELİRME
   ============================================================ */
.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .8s ease, transform .8s cubic-bezier(.2,.7,.3,1); }
.js .reveal.in { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .hero { padding-bottom: 190px; }
  .depth-grid { grid-template-columns: 1fr; gap: 0; }
  .ruler-col { display: none; }
  .depth-item, .js .depth-item { grid-template-columns: 62px 1fr; gap: 16px; opacity: 1; padding: 26px 0; }
  .grid-2 { grid-template-columns: 1fr; }
}

/* ============================================================
   HAREKETİ AZALT tercihi — tüm animasyonlar kapanır
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .hero-scene .draw { stroke-dashoffset: 0; }
  .js .hero-scene .fade { opacity: 1; }
  .js .reveal { opacity: 1; transform: none; }
  .js .depth-item { opacity: 1; }
}

/* Tasarım sistemi — deniz kesiti ve editoryal düzen */
:root {
  --navy-900: #091f2d;
  --navy-800: #102d3c;
  --navy-700: #244d61;
  --steel-500: #526f80;
  --steel-300: #adc0cd;
  --sand: #b81f3a;
  --ink: #132e3d;
  --muted: #526775;
  --line: #ccd7dc;
  --bg-alt: #edf2f4;
  --white: #fff;
  --on-dark: #c6d6e2;
  --dark-line: #34505f;
}
html { scroll-behavior: smooth; scroll-padding-top: 110px; }
body { font-size: 16px; }
.wrap { padding-inline: 56px; }
a, button, input, textarea { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--sand); outline-offset: 5px; }
.skip-link { position: fixed; top: 12px; left: 16px; z-index: 100; padding: 12px 20px; background: var(--sand); color: var(--ink); transform: translateY(-160%); }
.skip-link:focus { transform: none; }
.topbar { font-size: 12px; letter-spacing: .06em; }
.topbar .wrap { min-height: 38px; }
.lang a { border-radius: 0; }
.masthead { border-bottom: 1px solid var(--dark-line); }
.masthead .wrap { min-height: 94px; }
.brand { gap: 16px; }
.brand svg { width: 44px; height: 44px; }
.brand b { color: var(--white); font-size: 19px; letter-spacing: .085em; }
.brand span { font-size: 12px; letter-spacing: .07em; line-height: 1.6; }
nav ul { gap: 34px; align-items: center; }
nav a { letter-spacing: 0; font-size: 14px; }
nav li:last-child a { display: inline-block; border: 1px solid var(--dark-line); padding: 10px 20px; }
nav li:last-child a:hover { border-color: var(--sand); }
.hero { background: var(--navy-900); padding: 80px 0 300px; }
.hero::after { background: var(--sand); }
.hero > .wrap:first-child { display: grid; grid-template-columns: 1.35fr 1fr; column-gap: 7%; align-items: end; }
.hero .eyebrow { grid-column: 1/-1; color: var(--sand); font-size: 12px; letter-spacing: .18em; margin-bottom: 30px; }
.hero h1 { font-size: clamp(40px, 4.6vw, 68px); letter-spacing: -.055em; line-height: 1.1; font-weight: 400; max-width: none; margin: 0; }
.hero h1 span { color: var(--steel-300); }
.hero > .wrap > p:not(.eyebrow) { font-size: 17px; line-height: 1.8; max-width: 42ch; margin: 0 0 5px; }
.hero-actions { grid-column: 1/-1; margin-top: 34px; }
.btn { border-radius: 0; font-size: 14px; padding: 15px 24px; letter-spacing: 0; }
.btn-primary { background: var(--sand); }
.btn-primary:hover { background: var(--white); }
.btn-primary span { display: inline-block; margin-left: 26px; font-size: 20px; line-height: 1; }
.btn-ghost { border-color: var(--dark-line); }
.hero-scene { bottom: 38px; opacity: .85; }
.hero-scene svg { height: 255px; width: 100%; }
.hero .hero-caption { display: flex; justify-content: space-between; gap: 20px; position: absolute; bottom: 16px; left: 0; right: 0; font: 11px/1.5 monospace; letter-spacing: .09em; color: var(--steel-300); }
section { padding: 100px 0; }
.label { display: flex; align-items: center; gap: 12px; color: var(--navy-700); font-size: 12px; letter-spacing: .16em; margin-bottom: 24px; }
.label::before { content: ''; height: 1px; width: 30px; background: var(--sand); }
h2 { font-size: clamp(32px, 3.6vw, 48px); line-height: 1.15; font-weight: 400; letter-spacing: -.04em; max-width: 23ch; margin-bottom: 24px; }
.lede { font-size: 17px; line-height: 1.8; max-width: 65ch; }
.depth-grid { grid-template-columns: 200px 1fr; gap: 70px; margin-top: 55px; }
.ruler-col { top: 140px; padding: 24px; background: var(--bg-alt); border-top: 2px solid var(--sand); }
.ruler { height: 380px; background: repeating-linear-gradient(to bottom, transparent 0, transparent 18px, var(--line) 18px, var(--line) 19px) 64px 0 / 12px 100% no-repeat; }
.ruler-dot { background: var(--navy-700); box-shadow: 0 0 0 5px var(--line); }
.ruler-caption { font-size: 11px; letter-spacing: .07em; }
.depth-items { gap: 0; counter-reset: service; }
.depth-item, .js .depth-item { opacity: 1; grid-template-columns: 70px 1fr; gap: 22px; padding: 34px 0 38px; position: relative; }
.depth-item:first-child { padding-top: 0; }
.depth-item .m { font: 14px/2 monospace; font-weight: 400; color: var(--steel-500); }
.depth-item h3 { font-size: clamp(22px, 2.3vw, 30px); font-weight: 400; letter-spacing: -.025em; margin-bottom: 15px; }
.depth-item p { font-size: 16px; max-width: 63ch; margin-bottom: 20px; }
.depth-item ul { gap: 8px 24px; }
.depth-item li { border: 0; border-radius: 0; font-size: 14px; padding: 0; color: var(--muted); }
.depth-item li::before { content: '·'; color: var(--navy-700); margin-right: 8px; }
.depth-item.on h3 { color: var(--navy-700); }
.grid-2 { gap: 32px; background: none; border: 0; }
.card { padding: 34px 0 0; background: transparent; border-top: 1px solid var(--line); display: grid; grid-template-columns: 52px 1fr; gap: 0 18px; }
.card .ico { grid-row: 1/3; color: var(--navy-700); }
.card h3 { font-size: 25px; font-weight: 400; letter-spacing: -.02em; }
.card p { font-size: 16px; max-width: 43ch; }
.split { gap: 9%; grid-template-columns: 1.2fr 1fr; }
.facts { margin-top: 47px; }
.facts li { padding: 20px 0; font-size: 14px; }
.facts b { font-weight: 500; }
.sectors { gap: 40px; counter-reset: sector; }
.sector { border-top: 1px solid var(--line); padding-top: 24px; counter-increment: sector; }
.sector::before { content: '0' counter(sector); display: block; color: var(--steel-500); font: 13px/1.5 monospace; margin-bottom: 24px; }
.sector h3 { font-size: 23px; font-weight: 400; }
.sector p { font-size: 16px; }
.contact { position: relative; border-top: 3px solid var(--sand); }
.contact h2 { font-size: clamp(38px, 4vw, 56px); }
.contact-grid { gap: 10%; }
.cinfo li { border-color: var(--dark-line); }
.cinfo strong { font-size: 12px; }
fieldset { border: 0; margin: 0; padding: 0; min-width: 0; }
.form-note { font-size: 14px; color: var(--on-dark); margin: 0 0 24px; border-left: 2px solid var(--sand); padding-left: 14px; }
form label { font-size: 12px; letter-spacing: .05em; }
form input, form textarea { border-radius: 0; font-size: 16px; border-color: var(--dark-line); }
form button:disabled { cursor: not-allowed !important; background: var(--dark-line); color: var(--on-dark); }
footer { background: var(--navy-900); border-top: 1px solid var(--dark-line); font-size: 12px; }
@media (max-width: 1050px) {
  .wrap { padding-inline: 32px; }
  nav ul { gap: 20px; }
  .hero > .wrap:first-child { column-gap: 5%; }
  .hero h1 { font-size: 48px; }
  .hero > .wrap > p:not(.eyebrow) { font-size: 16px; }
  .depth-grid { grid-template-columns: 160px 1fr; gap: 40px; }
}
@media (max-width: 900px) {
  .masthead .wrap { min-height: 82px; }
  .menu-btn { border-radius: 0; }
  .hero { padding-top: 58px; padding-bottom: 245px; }
  .hero > .wrap:first-child { display: block; }
  .hero h1 { font-size: clamp(40px, 7vw, 58px); margin-bottom: 28px; }
  .hero > .wrap > p:not(.eyebrow) { max-width: 54ch; }
  .hero-scene svg { height: 200px; }
  .depth-grid { grid-template-columns: 1fr; gap: 0; }
  .grid-2 { grid-template-columns: 1fr 1fr; }
  .split, .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .facts { margin-top: 0; }
  section { padding-block: 72px; }
  .sectors { grid-template-columns: 1fr; gap: 32px; }
  .sector::before { margin-bottom: 12px; }
  .sectors p { max-width: 60ch; }
  .contact-grid form { max-width: 620px; }
  nav.open li:last-child a { border: 0; padding: 12px 0; }
  html:not(.js) nav { display: block; }
  html:not(.js) .masthead .wrap { flex-wrap: wrap; padding-block: 16px; }
  html:not(.js) nav ul { flex-wrap: wrap; padding-bottom: 8px; }
  html:not(.js) .menu-btn { display: none; }
}
@media (max-width: 540px) {
  .wrap { padding-inline: 22px; }
  .topbar .wrap > span:first-child { max-width: 220px; font-size: 10px; }
  .brand { gap: 10px; }
  .brand svg { width: 32px; height: 32px; }
  .brand b { font-size: 15px; }
  .brand span { font-size: 10px; letter-spacing: .025em; }
  .masthead .wrap { gap: 12px; }
  .menu-btn { font-size: 13px; padding: 8px; }
  .hero { padding-top: 42px; padding-bottom: 207px; }
  .hero h1 { font-size: clamp(33px, 8.8vw, 47px); }
  .hero .eyebrow { font-size: 10px; margin-bottom: 24px; }
  .hero-actions { gap: 10px; margin-top: 26px; }
  .btn { padding: 13px 16px; font-size: 13px; }
  .btn-primary span { margin-left: 12px; }
  .hero-scene svg { height: 165px; }
  .hero .hero-caption { font-size: 8px; letter-spacing: .03em; gap: 8px; }
  section { padding-block: 58px; }
  h2 { font-size: 34px; }
  .lede { font-size: 16px; margin-bottom: 32px; }
  .depth-grid { margin-top: 32px; }
  .depth-item, .js .depth-item { grid-template-columns: 1fr; gap: 8px; padding-block: 28px; }
  .depth-item:first-child { padding-top: 0; }
  .depth-item .m { font-size: 12px; }
  .depth-item h3 { font-size: 25px; }
  .grid-2 { grid-template-columns: 1fr; }
  .card { grid-template-columns: 38px 1fr; gap: 0 14px; }
  .facts li { gap: 20px; }
  .facts span { max-width: 58%; }
  .contact h2 { font-size: 40px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js .hero-scene .draw { stroke-dashoffset: 0; }
  .js .hero-scene .fade { opacity: 1; }
}

/* Hareket dili: tek seferlik açılış, kaydırmayla belirme, kısa etkileşimler */
.js .hero h1 { animation-duration: 1.1s; }
.js .hero-scene .d4 { animation-delay: 1.2s; animation-duration: 1.3s; }
.js .hero-scene .fade { animation-duration: 1s; }
.js .depth-item.reveal { opacity: 0; transform: translateY(24px); }
.js .depth-item.reveal.in { opacity: 1; transform: none; }
.js .card.reveal:nth-child(2) { transition-delay: .1s; }
.js .sector.reveal:nth-child(2) { transition-delay: .1s; }
.js .sector.reveal:nth-child(3) { transition-delay: .2s; }
.btn { transition: background .2s, border-color .2s, transform .2s; }
.btn-primary span { transition: transform .2s; }
@media (hover: hover) {
  .btn:hover { transform: translateY(-2px); }
  .btn-primary:hover span { transform: translate(2px, 2px); }
}
@media (prefers-reduced-motion: reduce) {
  .js .depth-item.reveal { opacity: 1; transform: none; }
  .btn:hover, .btn-primary:hover span { transform: none; }
}

/* Üç boyutlu deniz yolculuğu — sabit sahne, doğal sayfa kaydırması */
.ocean-journey { position: relative; height: 190vh; background: var(--navy-900); }
.hero.ocean-stage { position: sticky; top: 0; height: 100vh; min-height: 680px; padding: 0; overflow: hidden; isolation: isolate; }
.ocean-canvas { position: absolute; inset: 0; z-index: 0; opacity: 0; transition: opacity 1s; }
.ocean-canvas canvas { display: block; width: 100%; height: 100%; }
.ocean-ready .ocean-canvas { opacity: 1; }
.ocean-stage::before { content: ''; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(90deg,rgba(4,20,30,.91),rgba(4,20,30,.65) 32%,rgba(4,20,30,.04) 70%),linear-gradient(0deg,rgba(4,20,30,.85),transparent 27%); }
.hero.ocean-stage > .wrap:not(.hero-caption) { position: absolute; top: 15%; left: 0; right: 0; display: block; z-index: 2; opacity: calc(1 - var(--dive,0) * 1.25); transform: translateY(calc(var(--dive,0) * -50px)); pointer-events: none; }
.ocean-stage .hero-actions { pointer-events: auto; }
.ocean-stage .hero h1, .hero.ocean-stage h1 { max-width: 11ch; font-size: clamp(44px,4.9vw,72px); margin-bottom: 26px; }
.hero.ocean-stage h1 span { color: var(--on-dark); }
.hero.ocean-stage > .wrap > p:not(.eyebrow) { max-width: 37ch; font-size: 16px; color: var(--on-dark); }
.hero.ocean-stage .eyebrow { margin-bottom: 24px; }
.ocean-stage .hero-actions { margin-top: 28px; }
.ocean-stage .hero-scene { opacity: .65; }
.ocean-ready .hero-scene { display: none; }
.ocean-stage .hero-caption { display: none; }
.ocean-caption { position: absolute; bottom: 34px; left: max(56px,calc((100vw - 1208px)/2)); right: 56px; z-index: 2; color: var(--white); }
.ocean-caption > span { font: 11px/1.5 monospace; color: var(--sand); letter-spacing: .15em; }
.ocean-caption p { font-size: 16px; margin: 8px 0; color: var(--white); }
.ocean-caption p span { margin-left: 20px; }
.ocean-caption small { color: var(--steel-300); font-size: 11px; }
.ocean-toggle { position: absolute; bottom: 44px; right: 56px; z-index: 4; background: rgba(9,31,45,.72); color: var(--white); border: 1px solid var(--steel-300); padding: 12px 16px; font: inherit; font-size: 12px; cursor: pointer; }
.ocean-toggle[hidden] { display: none; }
.ocean-toggle:hover { background: var(--navy-900); }
@media (max-width: 900px) {
  .hero.ocean-stage > .wrap:not(.hero-caption) { top: 10%; }
  .ocean-caption { left: 32px; }
  .ocean-toggle { right: 32px; }
  .hero.ocean-stage h1 { font-size: 55px; }
}
@media (max-width: 540px) {
  .ocean-journey { height: 165vh; }
  .hero.ocean-stage { height: 100svh; min-height: 700px; }
  .hero.ocean-stage > .wrap:not(.hero-caption) { top: 38px; }
  .hero.ocean-stage h1 { font-size: 40px; max-width: none; line-height: 1.06; margin-bottom: 20px; }
  .hero.ocean-stage > .wrap > p:not(.eyebrow) { font-size: 14px; max-width: 37ch; }
  .ocean-stage::before { background: linear-gradient(180deg,rgba(4,20,30,.9),rgba(4,20,30,.6) 37%,transparent 62%,rgba(4,20,30,.85)); }
  .ocean-stage .hero-actions { margin-top: 22px; }
  .ocean-caption { bottom: 28px; left: 22px; right: 22px; }
  .ocean-caption p { font-size: 14px; }
  .ocean-toggle { bottom: 114px; right: 22px; font-size: 11px; padding: 9px 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .ocean-journey { height: auto; }
  .hero.ocean-stage { position: relative; }
  .hero.ocean-stage > .wrap:not(.hero-caption) { opacity: 1; transform: none; }
}
.ocean-journey { height: auto; }
.ocean-journey.scene-enabled { height: 190vh; }
.hero.ocean-stage h1 { max-width: 16ch; font-size: clamp(44px,4.5vw,66px); }
.ocean-toggle { top: 28px; bottom: auto; }
@media (max-width:540px) {
  .ocean-journey.scene-enabled { height: 165vh; }
  .hero.ocean-stage > .wrap:not(.hero-caption) { top: 75px; }
  .hero.ocean-stage h1 { font-size: 39px; }
  .ocean-toggle { top: 16px; bottom: auto; }
}
@media (prefers-reduced-motion: reduce) {
  .ocean-journey.scene-enabled { height: auto; }
}
.hero.ocean-stage { top: 94px; height: calc(100vh - 94px); }
@media(max-width:900px) { .hero.ocean-stage { top: 82px; height: calc(100svh - 82px); } }
@media(max-width:540px) {
  .hero.ocean-stage > .wrap > p:not(.eyebrow) { font-size: 16px; line-height: 1.65; }
  .ocean-stage::before { background: linear-gradient(180deg,rgba(4,20,30,.92),rgba(4,20,30,.75) 45%,rgba(4,20,30,.08) 70%,rgba(4,20,30,.85)); }
}

/* ============================================================
   MOBİL DÜZELTMELER — 6 Eylül 2026
   ============================================================ */

/* Duraklat düğmesi sahnenin altına döndü. Üstte dururken sabit menüyle
   çakışıyor ve sayfanın ilk okunan öğesi hâline geliyordu. */
.ocean-toggle { top: auto; bottom: 40px; right: 56px; }
@media (max-width: 900px) { .ocean-toggle { top: auto; bottom: 104px; right: 22px; } }
@media (max-width: 540px)  { .ocean-toggle { top: auto; bottom: 96px;  right: 18px; } }

/* Dar ekranda üst şerit sloganı iki satıra kırılıyordu; sadece TR/EN kalıyor. */
@media (max-width: 600px) {
  .topbar .wrap { justify-content: flex-end; }
  .topbar .wrap > span:first-child { display: none; }
}