/* ============================================================
   SODA AI EDUCATION — sodaedu.net/tr
   Design system: "Chapter Gates" — lime / paper / ink zones
   Type: Archivo (display) · IBM Plex Sans (body) · IBM Plex Mono (labels)
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Archivo:ital,wght@0,500;0,600;0,700;0,800;0,900;1,600;1,700;1,800&family=IBM+Plex+Mono:wght@400;500&family=IBM+Plex+Sans:wght@300;400;500;600&display=swap');

/* ---------- Tokens ---------- */
:root {
  --lime:       #C9F227;
  --lime-soft:  #D9F86B;
  --lime-deep:  #A8CF0E;
  --ink:        #0E120A;
  --ink-2:      #151A0F;
  --ink-3:      #1D2414;
  --paper:      #F5F6EC;
  --paper-2:    #EBEEDC;
  --muted:      #67705A;
  --muted-inv:  #99A386;
  --line:       rgba(14, 18, 10, .16);
  --line-inv:   rgba(245, 246, 236, .16);

  --font-d: 'Archivo', 'Segoe UI', system-ui, sans-serif;
  --font-b: 'IBM Plex Sans', 'Segoe UI', system-ui, sans-serif;
  --font-m: 'IBM Plex Mono', 'Cascadia Code', monospace;

  --ease-out:  cubic-bezier(.16, 1, .3, 1);
  --ease-snap: cubic-bezier(.77, 0, .175, 1);

  --nav-h: 76px;
  --gutter: clamp(20px, 4vw, 56px);
}

/* ---------- Reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-b);
  font-weight: 400;
  font-size: 1.04rem;
  line-height: 1.7;
  color: var(--ink);
  background: var(--ink);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { font: inherit; background: none; border: 0; cursor: pointer; color: inherit; }
em { font-style: normal; }
::selection { background: var(--ink); color: var(--lime); }
.z-ink ::selection, .z-ink::selection { background: var(--lime); color: var(--ink); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--lime); border: 3px solid var(--ink); }

.skip {
  position: fixed; top: -60px; left: 16px; z-index: 300;
  background: var(--ink); color: var(--lime);
  font-family: var(--font-m); font-size: .8rem; padding: 10px 16px;
  transition: top .25s var(--ease-out);
}
.skip:focus { top: 12px; }

/* ---------- Zones ---------- */
.z-lime  { background: var(--lime);  color: var(--ink); }
.z-paper { background: var(--paper); color: var(--ink); }
.z-ink   { background: var(--ink);   color: var(--paper); }

/* ---------- Utilities ---------- */
.container { max-width: 1440px; margin-inline: auto; padding-inline: var(--gutter); }

.mono {
  font-family: var(--font-m);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-m); font-size: .74rem;
  letter-spacing: .16em; text-transform: uppercase;
}
.kicker .pip {
  width: 8px; height: 8px; border-radius: 50%;
  background: currentColor; flex: none;
  animation: pipPulse 2.2s ease-in-out infinite;
}
@keyframes pipPulse { 0%,100% { opacity: 1; } 50% { opacity: .25; } }

.h2 {
  font-family: var(--font-d);
  font-weight: 800;
  font-size: clamp(2.1rem, 4.6vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -.03em;
  text-wrap: balance;
}
.h2 .outline, .outline {
  color: transparent;
  -webkit-text-stroke: 2px currentColor;
}
@supports not (-webkit-text-stroke: 2px black) {
  .h2 .outline, .outline { color: inherit; }
}
.h2 .it, .it { font-style: italic; font-weight: 700; }

.sec-head { padding-top: clamp(72px, 10vw, 140px); }
.sec-head .kicker { margin-bottom: 22px; }
.lead { max-width: 58ch; color: var(--muted); font-size: 1.06rem; }
.z-ink .lead { color: var(--muted-inv); }

/* ---------- Grain / progress ---------- */
.grain {
  position: fixed; inset: -50%; z-index: 200; pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='0.5'/%3E%3C/svg%3E");
  opacity: .045;
  animation: grainShift 1.2s steps(3) infinite;
}
@keyframes grainShift {
  0% { transform: translate(0, 0); }
  33% { transform: translate(-2%, 1%); }
  66% { transform: translate(1%, -2%); }
  100% { transform: translate(0, 0); }
}

.progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: var(--lime); z-index: 260;
  mix-blend-mode: difference;
}

/* ---------- Cursor ---------- */
.cursor-dot, .cursor-ring {
  position: fixed; top: 0; left: 0; z-index: 250;
  pointer-events: none; border-radius: 50%;
  transform: translate(-50%, -50%);
}
.cursor-dot { width: 7px; height: 7px; background: var(--lime); mix-blend-mode: difference; }
.cursor-ring {
  width: 34px; height: 34px;
  border: 1.5px solid var(--lime);
  mix-blend-mode: difference;
  transition: width .28s var(--ease-out), height .28s var(--ease-out), opacity .28s;
}
.cursor-ring.is-hover { width: 58px; height: 58px; }
@media (hover: none), (pointer: coarse) {
  .cursor-dot, .cursor-ring { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-m); font-size: .8rem;
  letter-spacing: .12em; text-transform: uppercase;
  padding: 17px 28px;
  border: 1.5px solid var(--ink);
  border-radius: 12px;
  transition: background .3s var(--ease-out), color .3s var(--ease-out), transform .3s var(--ease-out), border-color .3s var(--ease-out);
  position: relative; white-space: nowrap;
}
.btn .arr { display: inline-block; transition: transform .3s var(--ease-out); font-family: var(--font-b); }
.btn:hover .arr { transform: translate(4px, -4px); }

.btn-ink  { background: var(--ink); color: var(--lime); }
.btn-ink:hover { background: transparent; color: var(--ink); }

.btn-ink-lime { background: var(--ink-2); color: var(--lime); border-color: rgba(201,242,39,.42); }
.btn-ink-lime:hover { background: var(--lime); color: var(--ink); border-color: var(--lime); }

.btn-lime { background: var(--lime); color: var(--ink); border-color: var(--lime); }
.btn-lime:hover { background: transparent; color: var(--lime); }

.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--ink); color: var(--lime); }

.btn-ghost-inv { background: transparent; color: var(--paper); border-color: var(--paper); }
.btn-ghost-inv:hover { background: var(--paper); color: var(--ink); }

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 150;
  transition: background .35s var(--ease-out), box-shadow .35s;
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; height: var(--nav-h);
  padding-inline: var(--gutter);
}
.nav.scrolled { background: rgba(14, 18, 10, .88); backdrop-filter: blur(14px); }
.nav.scrolled .nav-inner { color: var(--paper); }
.nav.scrolled .brand-word small { color: var(--muted-inv); }
.nav.scrolled .nav-links a::after { background: var(--lime); }
.nav.scrolled .btn-nav { border-color: var(--lime); background: var(--lime); color: var(--ink); }
.nav.scrolled .btn-nav:hover { background: transparent; color: var(--lime); }
.nav.scrolled .burger span { background: var(--paper); }

.brand { display: inline-flex; align-items: center; gap: 13px; }
.brand-mark { width: 40px; height: 40px; flex: none; }
.brand-mark svg, .brand-mark img { width: 100%; height: 100%; display: block; object-fit: contain; }
.brand-word {
  font-family: var(--font-d); font-weight: 900; font-size: 1.12rem;
  letter-spacing: -.02em; line-height: 1; display: flex; flex-direction: column; gap: 3px;
}
.brand-word b { font-weight: 900; }
.brand-word small {
  font-family: var(--font-m); font-weight: 400; font-size: .56rem;
  letter-spacing: .42em; color: var(--muted); text-transform: uppercase;
}

.nav-links { display: flex; gap: clamp(18px, 2.6vw, 40px); }
.nav-links a { position: relative; padding: 6px 0; }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1.5px; background: var(--ink);
  transform: scaleX(0); transform-origin: right;
  transition: transform .35s var(--ease-out);
}
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); transform-origin: left; }

.nav-right { display: flex; align-items: center; gap: 18px; }
.btn-nav { padding: 13px 22px; }

.burger { display: none; flex-direction: column; gap: 6px; padding: 8px; z-index: 170; }
.burger span { width: 26px; height: 2px; background: var(--ink); transition: transform .35s var(--ease-out), opacity .3s; }
.burger.open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.burger.open span:nth-child(2) { opacity: 0; }
.burger.open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

/* Mobile menu overlay */
.menu-overlay {
  position: fixed; inset: 0; z-index: 160;
  background: var(--ink); color: var(--paper);
  display: flex; flex-direction: column; justify-content: center;
  padding: var(--gutter);
  clip-path: inset(0 0 100% 0);
  transition: clip-path .6s var(--ease-snap);
  visibility: hidden;
}
.menu-overlay.open { clip-path: inset(0 0 0% 0); visibility: visible; }
.menu-overlay nav { display: flex; flex-direction: column; gap: 6px; }
.menu-overlay nav a {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(2.2rem, 9vw, 4rem);
  letter-spacing: -.03em; line-height: 1.15;
  color: var(--paper);
  display: flex; align-items: baseline; gap: 16px;
  transform: translateY(30px); opacity: 0;
  transition: transform .55s var(--ease-out), opacity .55s, color .3s;
}
.menu-overlay.open nav a { transform: translateY(0); opacity: 1; }
.menu-overlay nav a:nth-child(2) { transition-delay: .06s; }
.menu-overlay nav a:nth-child(3) { transition-delay: .12s; }
.menu-overlay nav a:nth-child(4) { transition-delay: .18s; }
.menu-overlay nav a:nth-child(5) { transition-delay: .24s; }
.menu-overlay nav a:hover { color: var(--lime); }
.menu-overlay nav a .idx { font-family: var(--font-m); font-size: .8rem; color: var(--lime); font-weight: 400; }
.menu-overlay .menu-foot { margin-top: 48px; color: var(--muted-inv); }

/* ---------- Hero (dark · two-column) ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column;
  overflow: hidden;
  background: var(--ink); color: var(--paper);
}
.hero-inner {
  flex: 1;
  display: grid;
  grid-template-columns: 1.02fr .98fr;
  align-items: center;
  gap: clamp(32px, 5vw, 76px);
  padding-top: calc(var(--nav-h) + 4vh);
  padding-bottom: 6vh;
  position: relative; z-index: 2;
}
.hero-copy { max-width: 660px; }

/* background layers */
.hero-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: url(../img/hero-crystal.webp) 78% 44% / 50% auto no-repeat;
  filter: blur(66px) brightness(.82) saturate(1.1);
  transform: scale(1.06);
  opacity: .85;
  mix-blend-mode: screen;
  will-change: transform;
  animation: heroBgDrift 30s ease-in-out infinite alternate;
}
@keyframes heroBgDrift {
  0%   { transform: scale(1.06) translate3d(0, 0, 0); }
  100% { transform: scale(1.11) translate3d(-1.6%, -1.2%, 0); }
}
.hero-scrim {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    linear-gradient(90deg, #0E120A 0%, rgba(14,18,10,.94) 30%, rgba(14,18,10,.6) 52%, rgba(14,18,10,.16) 74%, rgba(14,18,10,.4) 100%),
    linear-gradient(180deg, rgba(14,18,10,.72) 0%, transparent 26%, transparent 52%, rgba(14,18,10,.94) 100%);
}
.hero-grid-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(245,246,236,.045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(245,246,236,.045) 1px, transparent 1px);
  background-size: clamp(60px, 8vw, 120px) clamp(60px, 8vw, 120px);
  mask-image: radial-gradient(120% 100% at 25% 40%, black 30%, transparent 100%);
}
.hero-glow {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(45% 45% at 12% 22%, rgba(201,242,39,.04), transparent 60%);
}
@keyframes floatSlow { 0%,100% { transform: translateY(0) rotate(0deg); } 50% { transform: translateY(-24px) rotate(-2deg); } }

.steps { position: relative; }
.steps-mark {
  position: absolute; z-index: 0; pointer-events: none;
  right: clamp(-8px, 1vw, 32px); top: clamp(24px, 5vw, 64px);
  width: clamp(104px, 12vw, 158px); aspect-ratio: 1;
  display: grid; place-items: center;
  animation: floatSlow 8.5s ease-in-out infinite;
}
.steps-mark-ring {
  position: absolute; inset: 0; border-radius: 50%;
  border: 1px dashed rgba(201,242,39,.34);
  animation: spin 20s linear infinite;
}
.steps-mark-ring-2 { inset: 17%; border-style: solid; border-color: rgba(245,246,236,.1); animation: spin 13s linear infinite reverse; }
.steps-mark-orbit { position: absolute; inset: 0; border-radius: 50%; animation: spin 10s linear infinite; }
.steps-mark-dot {
  position: absolute; top: -4px; left: 50%; transform: translateX(-50%);
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--lime); box-shadow: 0 0 10px 2px rgba(201,242,39,.6);
}
.steps-mark svg {
  position: relative; z-index: 1; width: 44%; height: 44%;
  filter: drop-shadow(0 6px 14px rgba(0,0,0,.5));
  animation: pulseCore 4.5s ease-in-out infinite;
}
@keyframes pulseCore { 0%,100% { transform: scale(1); opacity: .9; } 50% { transform: scale(1.09); opacity: 1; } }

/* kicker pill */
.hero-kicker {
  margin-bottom: clamp(22px, 3.2vh, 34px);
  border: 1.5px solid var(--line-inv); border-radius: 100px;
  padding: 11px 18px; color: var(--paper); font-weight: 500;
  background: rgba(245,246,236,.04); backdrop-filter: blur(6px);
}
.hero-kicker .pip { background: var(--lime); }

.hero-title {
  font-family: var(--font-d);
  font-weight: 800;
  font-size: clamp(2.3rem, 4.6vw, 4.4rem);
  line-height: 1.03;
  letter-spacing: -.03em;
  text-transform: none;
  color: var(--paper);
  margin-bottom: clamp(24px, 3.2vh, 36px);
}
.hero-line { display: block; overflow: hidden; padding-bottom: .12em; margin-bottom: -.12em; }
.hero-line > span {
  display: inline-block;
  transform: translateY(118%);
  animation: riseUp 1.1s var(--ease-out) forwards;
}
.hero-line:nth-child(1) > span { animation-delay: .15s; }
.hero-line:nth-child(2) > span { animation-delay: .3s; }
.hero-line:nth-child(3) > span { animation-delay: .45s; }
@keyframes riseUp { to { transform: translateY(0); } }

.hero-title .hl { position: relative; white-space: nowrap; }
.hero-title .hl::after {
  content: ""; position: absolute; left: -.03em; right: -.03em; bottom: -.02em;
  height: .12em; background: var(--lime); border-radius: 100px;
  transform: rotate(-.8deg) scaleX(0); transform-origin: left;
  animation: drawLine .8s var(--ease-out) 1s forwards;
}
@keyframes drawLine { to { transform: rotate(-.8deg) scaleX(1); } }

.hero-sub {
  max-width: 54ch;
  font-size: clamp(1rem, 1.35vw, 1.15rem);
  color: rgba(245,246,236,.72);
  margin-bottom: clamp(28px, 4vh, 44px);
  opacity: 0; animation: fadeIn .9s ease .75s forwards;
}
.hero-ctas { display: flex; flex-wrap: wrap; gap: 14px; opacity: 0; animation: fadeIn .9s ease .95s forwards; }
@keyframes fadeIn { to { opacity: 1; } }

/* trust line with hand-drawn pen underline */
.hero-trust {
  margin-top: clamp(30px, 4.4vh, 48px);
  font-family: var(--font-b);
  font-size: clamp(1.02rem, 1.2vw, 1.18rem);
  font-weight: 500;
  color: rgba(245,246,236,.78);
  opacity: 0; animation: fadeIn .9s ease 1.1s forwards;
}
.pen-underline { position: relative; display: inline-block; white-space: nowrap; padding-bottom: .22em; }
.hero-trust strong { color: var(--lime); font-weight: 800; }
.pen-line {
  position: absolute; left: -3%; bottom: -.02em;
  width: 106%; height: .62em; overflow: visible;
}
.pen-line path {
  fill: none; stroke: var(--lime); stroke-width: 3.4;
  stroke-linecap: round; stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 1; stroke-dashoffset: 1;
  animation: penDraw 1s var(--ease-out) 1.5s forwards;
  filter: drop-shadow(0 1px 5px rgba(201,242,39,.4));
}
@keyframes penDraw { to { stroke-dashoffset: 0; } }

/* hero right visual — 3D GYROCORE holo-icosphere sahnesi burada yaşar */
.hero-visual {
  display: block;
  position: relative; z-index: 2; justify-self: center;
  width: 100%; max-width: 480px;
  opacity: 0; animation: fadeIn 1s ease .5s forwards;
}
/* generated crystal hero visual (replaces CSS 3D emblem) */
.hero-visual-img {
  display: block; width: 100%; height: auto;
  position: relative; z-index: 2;
  mix-blend-mode: screen;
  -webkit-mask-image: radial-gradient(72% 76% at 52% 48%, #000 50%, transparent 82%);
  mask-image: radial-gradient(72% 76% at 52% 48%, #000 50%, transparent 82%);
  animation: heroFloat 7.5s ease-in-out infinite;
}
@keyframes heroFloat {
  0%,100% { transform: translateY(0) rotate(-.6deg); }
  50%     { transform: translateY(-16px) rotate(.6deg); }
}
.hero-visual-halo {
  position: absolute; z-index: 1; inset: 10% 6%;
  background: radial-gradient(closest-side, rgba(201,242,39,.30), rgba(201,242,39,.07) 52%, transparent 76%);
  filter: blur(34px); pointer-events: none;
  animation: orbGlow 6.5s ease-in-out infinite;
}

/* animated brand emblem (replaces 3D render) */
.orb {
  position: relative;
  width: 100%; aspect-ratio: 1;
  display: grid; place-items: center;
}
.orb-glow {
  position: absolute; inset: 10%; border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, rgba(201,242,39,.26), rgba(201,242,39,.05) 46%, transparent 70%);
  filter: blur(4px);
  animation: orbGlow 6.5s ease-in-out infinite;
}
@keyframes orbGlow { 0%,100% { opacity: .7; transform: scale(1); } 50% { opacity: 1; transform: scale(1.06); } }

.orb-ring {
  position: absolute; border-radius: 50%; pointer-events: none;
  border: 1px solid rgba(201,242,39,.16);
}
.orb-ring-1 { inset: 0;   border-style: dashed; border-color: rgba(201,242,39,.24); animation: spin 30s linear infinite; }
.orb-ring-2 { inset: 15%; border-color: rgba(245,246,236,.12); animation: spin 22s linear infinite reverse; }
.orb-ring-3 { inset: 30%; border-style: dashed; border-color: rgba(201,242,39,.32); animation: spin 16s linear infinite; }

.orb-orbit { position: absolute; inset: 0; border-radius: 50%; animation: spin 16s linear infinite; }
.orb-orbit-2 { inset: 15%; animation-duration: 12s; animation-direction: reverse; }
.orb-orbit-3 { inset: 30%; animation-duration: 9s; }
.orb-dot {
  position: absolute; top: -5px; left: 50%; transform: translateX(-50%);
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--lime); box-shadow: 0 0 12px 2px rgba(201,242,39,.65);
}
.orb-dot-sm { width: 6px; height: 6px; top: -3px; box-shadow: 0 0 8px 1px rgba(201,242,39,.6); }
.orb-dot-lg { width: 13px; height: 13px; top: -6px; }

.orb-core {
  position: relative; z-index: 2;
  width: 33%; aspect-ratio: 1;
  display: grid; place-items: center;
  background: linear-gradient(158deg, var(--ink-3), var(--ink));
  border: 1px solid rgba(201,242,39,.34);
  border-radius: 26px;
  box-shadow: 0 26px 54px -20px rgba(0,0,0,.85), inset 0 0 0 1px rgba(245,246,236,.04);
  animation: floatSlow 7s ease-in-out infinite;
}
.orb-core svg { width: 56%; height: 56%; filter: drop-shadow(0 4px 12px rgba(201,242,39,.4)); }

.hero-visual-badge {
  position: absolute; top: 2%; right: -6px;
  background: var(--ink-2); border: 1px solid rgba(201,242,39,.4);
  border-radius: 14px; padding: 12px 16px; text-align: right;
  box-shadow: 0 20px 40px -16px rgba(0,0,0,.7);
  animation: floatSlow 7s ease-in-out infinite;
}
.hero-visual-badge b { display: block; font-family: var(--font-d); font-weight: 900; font-size: 1.3rem; color: var(--lime); line-height: 1; letter-spacing: -.02em; }
.hero-visual-badge span { font-family: var(--font-m); font-size: .56rem; letter-spacing: .12em; text-transform: uppercase; color: var(--muted-inv); }

/* ---------- Stats ticker ---------- */
.ticker {
  position: relative; z-index: 3;
  background: var(--ink-2); color: var(--lime);
  border-top: 1px solid var(--line-inv);
  border-bottom: 1px solid var(--line-inv);
  overflow: hidden; padding-block: 17px;
}
.ticker-track { display: flex; width: max-content; animation: marq 36s linear infinite; }
.ticker:hover .ticker-track { animation-play-state: paused; }
.ticker-group { display: flex; align-items: center; flex: none; }
.t-item {
  display: inline-flex; align-items: baseline; gap: 10px;
  font-family: var(--font-m); font-size: .76rem;
  letter-spacing: .14em; text-transform: uppercase;
  padding-inline: 30px; white-space: nowrap;
  color: var(--muted-inv);
}
.t-item b {
  font-family: var(--font-d); font-weight: 900; font-style: normal;
  font-size: 1.25rem; letter-spacing: -.02em; color: var(--lime);
}
.t-sep { color: var(--lime); font-size: .9rem; }
@keyframes marq { to { transform: translateX(-50%); } }

/* ---------- References (logo marquee) ---------- */
.refs { padding-block: clamp(64px, 9vw, 120px) clamp(48px, 6vw, 84px); position: relative; }
.refs .sec-head { padding-top: 0; margin-bottom: clamp(14px, 2vw, 26px); display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 24px; }
.refs .h2 { font-size: clamp(1.8rem, 3.4vw, 3rem); }
.refs-note { font-family: var(--font-m); font-size: .74rem; letter-spacing: .14em; text-transform: uppercase; color: var(--muted-inv); }
.refs-note-strong {
  font-family: var(--font-d); font-weight: 900; font-size: clamp(1.05rem, 1.6vw, 1.45rem);
  letter-spacing: -.01em; text-transform: none; color: var(--lime);
}

.refs-marquee { overflow: hidden; position: relative; padding-block: 10px; }
.refs-marquee::before, .refs-marquee::after {
  content: ""; position: absolute; top: 0; bottom: 0; width: clamp(40px, 8vw, 140px); z-index: 2; pointer-events: none;
}
.refs-marquee::before { left: 0; background: linear-gradient(to right, var(--ink), transparent); }
.refs-marquee::after { right: 0; background: linear-gradient(to left, var(--ink), transparent); }

.refs-track { display: flex; width: max-content; animation: marq 44s linear infinite; }
.refs-marquee:hover .refs-track { animation-play-state: paused; }
.refs-group { display: flex; align-items: center; gap: clamp(28px, 4vw, 64px); padding-right: clamp(28px, 4vw, 64px); flex: none; }

.ref-chip {
  width: clamp(48px, 4.6vw, 66px);
  aspect-ratio: 1; border-radius: 12px;
  background: #FFFFFF;
  display: grid; place-items: center;
  overflow: hidden; flex: none;
  border: 1.5px solid var(--lime);
  box-shadow: 0 0 14px rgba(201,242,39,.22);
  transition: transform .35s var(--ease-out), border-color .35s, box-shadow .35s;
}
.ref-chip:hover { transform: scale(1.07); border-color: var(--lime); box-shadow: 0 0 0 5px rgba(201,242,39,.18), 0 0 22px rgba(201,242,39,.38); }
.ref-chip img { width: 62%; height: 62%; object-fit: contain; }
.ref-chip .ref-word {
  font-family: var(--font-d); font-weight: 900; font-size: .82rem;
  letter-spacing: -.015em; line-height: 1.08;
  color: var(--ink); text-align: center; padding: 8px;
  text-transform: uppercase;
}

/* ---------- Case studies (ink zone) ---------- */
.cases { position: relative; padding-bottom: clamp(72px, 9vw, 130px); }
/* daha dar, odaklı bir kolon — çok yer kaplamasın */
.cases .container { max-width: 1140px; }
.cases .sec-head { padding-top: clamp(28px, 4vw, 60px); margin-bottom: clamp(28px, 3.5vw, 48px); }
.cases .sec-head .h2 { max-width: 22ch; font-size: clamp(1.7rem, 3vw, 2.7rem); margin-top: 16px !important; }
.cases-head-row { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 28px; }

.case {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: clamp(24px, 3vw, 52px);
  padding-block: clamp(36px, 4.5vw, 68px);
  border-top: 1px solid var(--line-inv);
  align-items: center;
}
.case-ghost {
  position: absolute; top: 10px; right: 0;
  font-family: var(--font-d); font-weight: 900;
  font-size: clamp(4.5rem, 11vw, 10rem); line-height: 1;
  color: transparent; -webkit-text-stroke: 1.5px rgba(245,246,236,.06);
  pointer-events: none; user-select: none;
}
.case-body { grid-column: 1 / 7; display: flex; flex-direction: column; gap: 20px; position: relative; z-index: 1; }
.case-visual-wrap { grid-column: 7 / 13; position: relative; z-index: 1; }
.case:nth-of-type(even) .case-body { grid-column: 7 / 13; order: 2; }
.case:nth-of-type(even) .case-visual-wrap { grid-column: 1 / 7; order: 1; }

.case-client { color: var(--lime); }
.case-title {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.5rem, 2.2vw, 2.15rem);
  line-height: 1.1; letter-spacing: -.02em; text-wrap: balance;
}
.case-desc { color: rgba(245,246,236,.74); max-width: 44ch; font-size: .98rem; line-height: 1.68; }

.case-results { display: flex; flex-direction: column; border-top: 1px solid var(--line-inv); margin-top: 8px; }
.case-results li {
  display: flex; align-items: baseline; gap: 18px;
  padding-block: 16px; border-bottom: 1px solid var(--line-inv);
}
.case-results .num {
  font-family: var(--font-d); font-weight: 900;
  font-size: clamp(1.5rem, 2.4vw, 2.1rem); letter-spacing: -.02em;
  color: var(--lime); min-width: 5.2ch;
}
.case-results .lbl { font-size: .92rem; color: rgba(245,246,236,.66); line-height: 1.5; }

.case-tags { display: flex; flex-wrap: wrap; gap: 10px; }
.case-tags li {
  font-family: var(--font-m); font-size: .68rem;
  letter-spacing: .1em; text-transform: uppercase;
  padding: 8px 14px; border: 1px solid var(--line-inv);
  border-radius: 100px; color: rgba(245,246,236,.82);
  transition: border-color .3s, color .3s, background .3s;
}
.case-tags li:hover { background: rgba(201,242,39,.08); }
.case-tags li:hover { border-color: var(--lime); color: var(--lime); }

.cases-more { display: flex; justify-content: center; padding-top: clamp(40px, 5vw, 64px); border-top: 1px solid var(--line-inv); }

/* ---------- Mock product UI panels ---------- */
.mock {
  background: var(--ink-2);
  border: 1px solid var(--line-inv);
  border-radius: 14px;
  height: 100%;
  min-height: 264px;
  display: flex; flex-direction: column;
  position: relative; overflow: hidden;
  box-shadow: 0 16px 38px -22px rgba(0,0,0,.6);
}
.mrow, .mail-line, .bubble, .fb-card, .exam-frame,
.data-kpis .kpi, .data-chart, .data-flow span, .m-chip { border-radius: 10px; }
.mock::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(90% 60% at 80% 0%, rgba(201,242,39,.07), transparent 60%);
}
.mock-bar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 18px; border-bottom: 1px solid var(--line-inv);
  font-family: var(--font-m); font-size: .66rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--muted-inv);
}
.mock-bar .live { display: inline-flex; align-items: center; gap: 8px; color: var(--lime); }
.mock-bar .live::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--lime); animation: pipPulse 2s ease-in-out infinite;
}
.mock-body { flex: 1; padding: clamp(18px, 2.4vw, 30px); display: flex; flex-direction: column; gap: 14px; position: relative; z-index: 1; }

/* variant: student tracking */
.mrow {
  display: flex; align-items: center; gap: 14px;
  padding: 12px 14px; background: var(--ink-3);
  border: 1px solid var(--line-inv);
}
.mrow .avatar {
  width: 34px; height: 34px; border-radius: 50%; flex: none;
  background: var(--ink); color: var(--lime);
  display: grid; place-items: center;
  font-family: var(--font-m); font-size: .68rem;
}
.mrow .m-name { font-size: .84rem; font-weight: 500; color: var(--paper); line-height: 1.3; }
.mrow .m-sub { font-family: var(--font-m); font-size: .62rem; letter-spacing: .08em; color: var(--muted-inv); text-transform: uppercase; }
.mrow .risk { margin-left: auto; flex: none; width: 90px; height: 5px; background: rgba(245,246,236,.1); position: relative; overflow: hidden; }
.mrow .risk i { position: absolute; inset: 0; right: auto; background: var(--lime); width: var(--w, 60%); }
.mrow.alert { border-color: rgba(201,242,39,.5); }
.m-chip {
  align-self: flex-start;
  font-family: var(--font-m); font-size: .64rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink);
  background: var(--lime); padding: 7px 12px;
}

/* variant: mail automation */
.mail-line {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--font-m); font-size: .7rem; letter-spacing: .04em;
  color: var(--muted-inv);
  padding: 11px 14px; background: var(--ink-3); border: 1px solid var(--line-inv);
}
.mail-line .st { margin-left: auto; color: var(--lime); flex: none; }
.bubble {
  max-width: 85%; padding: 13px 16px;
  font-size: .84rem; line-height: 1.55;
  border: 1px solid var(--line-inv); background: var(--ink-3); color: var(--paper);
}
.bubble.ai { align-self: flex-end; background: var(--lime); color: var(--ink); border-color: var(--lime); }
.bubble .who { display: block; font-family: var(--font-m); font-size: .6rem; letter-spacing: .12em; text-transform: uppercase; opacity: .65; margin-bottom: 5px; }

/* variant: speaking coach */
.wave { display: flex; align-items: center; gap: 5px; height: 74px; padding-inline: 6px; }
.wave i {
  flex: 1; background: var(--lime); min-height: 8%;
  animation: waveBar 1.3s ease-in-out infinite;
  animation-delay: calc(var(--i) * .09s);
  transform-origin: center;
}
@keyframes waveBar { 0%,100% { transform: scaleY(.25); opacity: .5; } 50% { transform: scaleY(1); opacity: 1; } }
.score-row { display: flex; gap: 14px; align-items: stretch; }
.score-ring {
  width: 108px; height: 108px; border-radius: 50%; flex: none;
  background: conic-gradient(var(--lime) 0 75%, rgba(245,246,236,.1) 75% 100%);
  display: grid; place-items: center; position: relative;
}
.score-ring::before { content: ""; position: absolute; inset: 9px; border-radius: 50%; background: var(--ink-2); }
.score-ring b {
  position: relative; font-family: var(--font-d); font-weight: 900;
  font-size: 1.5rem; color: var(--paper);
}
.score-ring small { position: absolute; bottom: 24px; font-family: var(--font-m); font-size: .56rem; letter-spacing: .14em; color: var(--muted-inv); text-transform: uppercase; }
.fb-card { flex: 1; padding: 14px 16px; background: var(--ink-3); border: 1px solid var(--line-inv); font-size: .82rem; color: var(--paper); line-height: 1.55; }
.fb-card .who { display: block; font-family: var(--font-m); font-size: .6rem; letter-spacing: .12em; text-transform: uppercase; color: var(--lime); margin-bottom: 6px; }

/* variant: exam proctor */
.exam-frame {
  flex: 1; min-height: 190px; position: relative;
  border: 1.5px dashed rgba(201,242,39,.5);
  display: grid; place-items: center;
  background:
    linear-gradient(to right, rgba(245,246,236,.04) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(245,246,236,.04) 1px, transparent 1px);
  background-size: 28px 28px;
}
.exam-frame .corner { position: absolute; width: 22px; height: 22px; border: 2.5px solid var(--lime); }
.exam-frame .corner.tl { top: -2px; left: -2px; border-right: 0; border-bottom: 0; }
.exam-frame .corner.tr { top: -2px; right: -2px; border-left: 0; border-bottom: 0; }
.exam-frame .corner.bl { bottom: -2px; left: -2px; border-right: 0; border-top: 0; }
.exam-frame .corner.br { bottom: -2px; right: -2px; border-left: 0; border-top: 0; }
.exam-frame svg { width: 84px; height: 84px; opacity: .85; }
.exam-scan {
  position: absolute; left: 6%; right: 6%; height: 1.5px;
  background: var(--lime); opacity: .7;
  animation: examScan 3.2s ease-in-out infinite alternate;
}
@keyframes examScan { from { top: 12%; } to { top: 86%; } }
.check-list { display: flex; flex-direction: column; gap: 9px; }
.check-list li {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-m); font-size: .7rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--paper);
}
.check-list li::before {
  content: "✓"; width: 20px; height: 20px; flex: none;
  background: var(--lime); color: var(--ink);
  display: grid; place-items: center;
  font-size: .7rem; font-weight: 700; border-radius: 3px;
}

/* variant: data engineering / analytics */
.data-kpis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.data-kpis .kpi { background: var(--ink-3); border: 1px solid var(--line-inv); padding: 12px 14px; }
.data-kpis .kpi b {
  font-family: var(--font-d); font-weight: 900; font-size: 1.3rem;
  color: var(--lime); display: block; line-height: 1.1; letter-spacing: -.02em;
}
.data-kpis .kpi span { font-family: var(--font-m); font-size: .55rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted-inv); }
.data-chart {
  display: flex; align-items: flex-end; gap: clamp(6px, 1.2vw, 13px);
  height: 118px; padding: 14px; background: var(--ink-3); border: 1px solid var(--line-inv);
}
.data-chart i { flex: 1; background: rgba(201,242,39,.28); height: var(--h, 40%); transform-origin: bottom; animation: growBar 1.3s var(--ease-out) both; animation-delay: calc(var(--i, 0) * .07s); }
.data-chart i.hot { background: var(--lime); }
@keyframes growBar { from { transform: scaleY(0); } to { transform: scaleY(1); } }
.data-flow { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.data-flow span {
  font-family: var(--font-m); font-size: .58rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--muted-inv);
  border: 1px solid var(--line-inv); padding: 6px 10px;
}
.data-flow span.on { color: var(--ink); background: var(--lime); border-color: var(--lime); }
.data-flow .arrow { border: 0; padding: 0; color: var(--lime); }

/* ---------- Quote (lime gate) ---------- */
.quote { position: relative; padding-block: clamp(90px, 13vw, 190px); overflow: hidden; }
.quote-mark {
  position: absolute; top: 2vw; left: 2vw;
  font-family: var(--font-d); font-weight: 900;
  font-size: clamp(10rem, 26vw, 26rem); line-height: .8;
  color: rgba(14,18,10,.07); pointer-events: none; user-select: none;
}
.quote blockquote {
  position: relative; z-index: 1;
  font-family: var(--font-d); font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 3.1rem);
  line-height: 1.22; letter-spacing: -.02em;
  max-width: 26ch; text-wrap: balance;
}
.quote blockquote em { background: var(--ink); color: var(--lime); padding: 0 .14em; font-style: normal; }
.quote figcaption {
  position: relative; z-index: 1;
  margin-top: 40px; display: flex; align-items: center; gap: 16px;
}
.quote .qv-avatar {
  width: 58px; height: 58px; border-radius: 50%;
  background: var(--ink); color: var(--lime);
  display: grid; place-items: center; overflow: hidden; flex: none;
  font-family: var(--font-d); font-weight: 900; font-size: 1rem;
  box-shadow: 0 0 0 3px rgba(14,18,10,.14);
}
.quote .qv-avatar.qv-photo { background: var(--paper); box-shadow: 0 0 0 3px rgba(14,18,10,.2); }
.quote.on-ink .qv-avatar.qv-photo { box-shadow: 0 0 0 3px rgba(201,242,39,.35); }
.quote .qv-avatar img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.quote .qv-name { font-weight: 600; font-size: .98rem; line-height: 1.3; }
.quote .qv-role { font-family: var(--font-m); font-size: .68rem; letter-spacing: .12em; text-transform: uppercase; color: rgba(14,18,10,.6); }

/* testimonial grid (3-up) */
.testi-grid { position: relative; z-index: 1; display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(16px, 2vw, 26px); align-items: stretch; }
.testi-grid .testi-card {
  background: rgba(14,18,10,.045);
  border: 1.5px solid var(--ink);
  border-radius: 18px;
  padding: clamp(24px, 2.4vw, 34px);
  display: flex; flex-direction: column; gap: 22px;
  transition: transform .45s var(--ease-out), box-shadow .45s var(--ease-out), background .45s;
}
.testi-grid .testi-card:hover { transform: translateY(-6px); box-shadow: 7px 7px 0 var(--ink); background: rgba(14,18,10,.02); }
.testi-grid .testi-card blockquote {
  font-family: var(--font-d); font-weight: 700;
  font-size: clamp(1.05rem, 1.45vw, 1.3rem);
  line-height: 1.34; letter-spacing: -.01em; color: var(--ink);
  flex: 1; text-wrap: pretty;
}
.testi-grid .testi-card blockquote em { background: var(--ink); color: var(--lime); padding: 0 .16em; font-style: normal; border-radius: 3px; }
.testi-grid .testi-card figcaption { display: flex; align-items: center; gap: 14px; margin: 0; }
.testi-grid .testi-card .qv-avatar {
  width: 50px; height: 50px; border-radius: 50%; overflow: hidden; flex: none;
  background: var(--ink); color: var(--lime); display: grid; place-items: center;
  font-family: var(--font-d); font-weight: 900; font-size: .9rem;
}
.testi-grid .testi-card .qv-avatar.qv-photo { background: var(--paper); }
.testi-grid .testi-card .qv-avatar img { width: 100%; height: 100%; object-fit: cover; }
.testi-grid .testi-card .qv-name { font-family: var(--font-d); font-weight: 800; font-size: .98rem; color: var(--ink); line-height: 1.3; }
.testi-grid .testi-card .qv-role { font-family: var(--font-m); font-size: .64rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(14,18,10,.6); }
@media (max-width: 920px) { .testi-grid { grid-template-columns: 1fr; max-width: 560px; } }

/* ---------- Problems → Solutions (paper) ---------- */
.probsol { padding-bottom: clamp(80px, 11vw, 160px); }
.probsol .sec-head { margin-bottom: clamp(18px, 2.4vw, 34px); }

.prob-list { border-top: 1px solid var(--line); margin-bottom: clamp(72px, 9vw, 130px); }
.prob-row {
  display: grid;
  grid-template-columns: minmax(70px, 130px) 1.2fr 1fr minmax(48px, 80px);
  align-items: center; gap: clamp(16px, 2.5vw, 40px);
  padding-block: clamp(24px, 3.4vw, 44px);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.prob-row::after {
  content: ""; position: absolute; left: 0; bottom: -1px;
  width: 0%; height: 2px; background: var(--ink);
  transition: width .5s var(--ease-out);
}
.prob-row:hover::after { width: 100%; }
.prob-idx { color: var(--muted); }
.prob-row h3 {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.25rem, 2.2vw, 1.9rem);
  line-height: 1.1; letter-spacing: -.02em;
}
.prob-row p { color: var(--muted); font-size: .95rem; }
.prob-x {
  font-family: var(--font-d); font-weight: 900;
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  color: var(--muted); text-align: right;
  transition: color .3s, transform .4s var(--ease-out);
}
.prob-row:hover .prob-x { color: var(--ink); transform: rotate(90deg); }

.sol-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: clamp(16px, 2vw, 28px);
  align-items: start;
}
.sol-card {
  background: var(--lime);
  border: 1.5px solid var(--ink);
  padding: clamp(24px, 2.6vw, 40px);
  display: flex; flex-direction: column; gap: 18px;
  min-height: 330px; position: relative;
  transition: transform .45s var(--ease-out), box-shadow .45s var(--ease-out);
}
.sol-card:nth-child(2) { margin-top: clamp(24px, 4vw, 64px); }
.sol-card:nth-child(3) { margin-top: clamp(48px, 8vw, 128px); }
.sol-card:hover { transform: translate(-5px, -5px); box-shadow: 8px 8px 0 var(--ink); }
.sol-idx { color: rgba(14,18,10,.55); }
.sol-card h3 {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.4rem, 2vw, 1.85rem);
  line-height: 1.08; letter-spacing: -.02em;
  max-width: 12ch;
}
.sol-card .chiplist { display: flex; flex-wrap: wrap; gap: 8px; margin-top: auto; }
.sol-card .chiplist li {
  font-family: var(--font-m); font-size: .66rem;
  letter-spacing: .08em; text-transform: uppercase;
  border: 1px solid var(--ink); padding: 7px 12px; border-radius: 100px;
}
.sol-arr { position: absolute; top: clamp(24px, 2.6vw, 40px); right: clamp(24px, 2.6vw, 40px); width: 30px; height: 30px; }
.sol-arr svg { width: 100%; height: 100%; }

/* ---------- Steps (ink) ---------- */
.steps { padding-bottom: clamp(90px, 12vw, 170px); }
.steps .sec-head { margin-bottom: clamp(56px, 7vw, 100px); display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 28px; }
.steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); position: relative; }
.steps-grid::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 1px;
  background: var(--line-inv);
}
.step { padding: clamp(28px, 3vw, 44px) clamp(18px, 2vw, 32px) 0 0; position: relative; }
.step::before {
  content: ""; position: absolute; top: -5px; left: 0;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--ink); border: 2px solid var(--lime);
}
.step-idx {
  font-family: var(--font-d); font-weight: 900;
  font-size: clamp(2.4rem, 4.4vw, 4rem);
  color: transparent; -webkit-text-stroke: 1.5px var(--lime);
  line-height: 1; display: block; margin-bottom: 18px;
}
.step h3 {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.15rem, 1.7vw, 1.5rem);
  letter-spacing: -.01em; margin-bottom: 10px; color: var(--paper);
}
.step p { font-size: .92rem; color: var(--muted-inv); max-width: 30ch; }

/* ---------- Who uses (paper index rows) ---------- */
.who { padding-bottom: clamp(80px, 11vw, 150px); }
.who .sec-head { margin-bottom: clamp(40px, 5vw, 64px); }
.who-list { border-top: 1.5px solid var(--ink); }
.who-row {
  display: grid;
  grid-template-columns: minmax(60px, 110px) 1fr auto;
  align-items: center; gap: clamp(16px, 3vw, 48px);
  padding-block: clamp(28px, 4vw, 52px);
  border-bottom: 1.5px solid var(--ink);
  position: relative; overflow: hidden;
  transition: padding-left .45s var(--ease-out);
}
.who-row::before {
  content: ""; position: absolute; inset: 0;
  background: var(--ink);
  transform: scaleY(0); transform-origin: bottom;
  transition: transform .45s var(--ease-snap);
  z-index: 0;
}
.who-row:hover::before { transform: scaleY(1); }
.who-row:hover { padding-left: clamp(10px, 1.6vw, 28px); }
.who-row > * { position: relative; z-index: 1; transition: color .35s; }
.who-idx { color: var(--muted); }
.who-main h3 {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.7rem, 3.6vw, 3.2rem);
  letter-spacing: -.03em; line-height: 1.05;
}
.who-main p { font-family: var(--font-m); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-top: 10px; }
.who-arr { font-family: var(--font-b); font-size: clamp(1.6rem, 3vw, 2.6rem); font-weight: 300; transition: transform .45s var(--ease-out), color .35s; }
.who-row:hover .who-idx, .who-row:hover .who-main h3 { color: var(--lime); }
.who-row:hover .who-main p { color: var(--muted-inv); }
.who-row:hover .who-arr { color: var(--lime); transform: translate(8px, -8px); }

/* ---------- SSS / FAQ (ink accordion) ---------- */
.faq { padding-bottom: clamp(90px, 12vw, 160px); }
.faq .sec-head { margin-bottom: clamp(40px, 5vw, 64px); }
.faq-list { border-top: 1.5px solid var(--line-inv); }
.faq-item { border-bottom: 1.5px solid var(--line-inv); }
.faq-item summary {
  list-style: none; cursor: pointer;
  display: grid; grid-template-columns: 1fr auto; align-items: center;
  gap: clamp(16px, 3vw, 44px);
  padding-block: clamp(22px, 3.2vw, 40px);
  transition: padding-left .4s var(--ease-out);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-q {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.12rem, 2.1vw, 1.7rem);
  line-height: 1.18; letter-spacing: -.02em; color: var(--paper);
  transition: color .35s;
}
.faq-ic { position: relative; width: 22px; height: 22px; flex: none; }
.faq-ic::before, .faq-ic::after {
  content: ""; position: absolute; background: var(--lime);
  transition: transform .4s var(--ease-out), opacity .3s;
}
.faq-ic::before { top: 50%; left: 0; width: 100%; height: 2px; transform: translateY(-50%); }
.faq-ic::after  { left: 50%; top: 0; width: 2px; height: 100%; transform: translateX(-50%); }
.faq-item[open] .faq-ic::after { transform: translateX(-50%) scaleY(0); opacity: 0; }
.faq-item:hover summary { padding-left: clamp(6px, 1.2vw, 18px); }
.faq-item:hover .faq-q,
.faq-item[open] .faq-q { color: var(--lime); }
.faq-a { padding: 0 clamp(32px, 6vw, 90px) clamp(26px, 3.4vw, 40px) 0; }
.faq-a p { color: var(--muted-inv); font-size: 1rem; line-height: 1.72; max-width: 74ch; }

/* ---------- CTA gate (lime) ---------- */
.cta { position: relative; padding-block: clamp(100px, 14vw, 200px); overflow: hidden; }
.cta-inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1fr auto; gap: clamp(32px, 5vw, 80px); align-items: center; }
.cta h2 {
  font-family: var(--font-d); font-weight: 900;
  font-size: clamp(2.4rem, 6.4vw, 6rem);
  line-height: .98; letter-spacing: -.04em;
  max-width: 14ch; text-wrap: balance;
  margin-bottom: 26px;
}
.cta .lead { color: rgba(14,18,10,.75); margin-bottom: 40px; }
.cta-ctas { display: flex; flex-wrap: wrap; gap: 16px; }
.cta-grid-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(14,18,10,.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(14,18,10,.06) 1px, transparent 1px);
  background-size: clamp(60px, 8vw, 120px) clamp(60px, 8vw, 120px);
  mask-image: radial-gradient(110% 100% at 70% 50%, black 30%, transparent 100%);
}
.cta-badge { position: relative; width: clamp(150px, 16vw, 220px); aspect-ratio: 1; flex: none; }
.cta-badge svg.rot { width: 100%; height: 100%; animation: spin 16s linear infinite; }
.cta-badge svg.rot text {
  font-family: var(--font-m); font-size: 11.4px;
  letter-spacing: .3em; text-transform: uppercase;
  fill: var(--ink);
}
.cta-badge .cta-badge-core {
  position: absolute; inset: 26%;
  background: var(--ink); border-radius: 50%;
  display: grid; place-items: center;
}
.cta-badge .cta-badge-core svg { width: 44%; height: 44%; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- Footer ---------- */
.footer { padding-top: clamp(72px, 9vw, 130px); }
.footer-top {
  display: grid; grid-template-columns: 1.5fr repeat(4, minmax(128px, 1fr));
  gap: clamp(28px, 4vw, 64px);
  padding-bottom: clamp(56px, 7vw, 90px);
  border-bottom: 1px solid var(--line-inv);
}
.footer-brand .brand { margin-bottom: 22px; }
.footer-brand .brand-word small { color: var(--muted-inv); }
.footer-tag {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.3rem, 1.9vw, 1.7rem);
  line-height: 1.15; letter-spacing: -.02em;
  color: var(--paper); max-width: 16ch; text-wrap: balance;
}
.footer-tag em { color: var(--lime); font-style: normal; }
.footer h4 {
  font-family: var(--font-m); font-weight: 500; font-size: .68rem;
  letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted-inv); margin-bottom: 20px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col a { font-size: .92rem; color: var(--paper); position: relative; }
.footer-col a:hover { color: var(--lime); }
.footer-bottom {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 16px; padding-block: 28px;
  font-family: var(--font-m); font-size: .68rem;
  letter-spacing: .12em; text-transform: uppercase; color: var(--muted-inv);
}
.footer-bottom .up { display: inline-flex; align-items: center; gap: 8px; color: var(--lime); }

/* ---------- Dark hero nav (home) ---------- */
.page-home .nav:not(.scrolled) .nav-inner { color: var(--paper); }
.page-home .nav:not(.scrolled) .brand-word small { color: var(--muted-inv); }
.page-home .nav:not(.scrolled) .nav-links a::after { background: var(--lime); }
.page-home .nav:not(.scrolled) .burger span { background: var(--paper); }
.page-home .nav:not(.scrolled) .btn-nav { border-color: var(--lime); background: var(--lime); color: var(--ink); }
.page-home .nav:not(.scrolled) .btn-nav:hover { background: transparent; color: var(--lime); }

/* ---------- Projects page ---------- */
.page-projects .nav:not(.scrolled) .nav-inner { color: var(--paper); }
.page-projects .nav:not(.scrolled) .brand-word small { color: var(--muted-inv); }
.page-projects .nav:not(.scrolled) .nav-links a::after { background: var(--lime); }
.page-projects .nav:not(.scrolled) .burger span { background: var(--paper); }
.page-projects .nav:not(.scrolled) .btn-nav { border-color: var(--lime); background: var(--lime); color: var(--ink); }
.page-projects .nav:not(.scrolled) .btn-nav:hover { background: transparent; color: var(--lime); }

.p-hero { position: relative; padding-top: calc(var(--nav-h) + clamp(64px, 10vh, 120px)); padding-bottom: clamp(56px, 8vw, 100px); overflow: hidden; }
.p-hero .crumb { color: var(--muted-inv); margin-bottom: 28px; display: inline-flex; gap: 10px; }
.p-hero .crumb a:hover { color: var(--lime); }
.p-hero h1 {
  font-family: var(--font-d); font-weight: 900;
  font-size: clamp(3rem, 10vw, 9rem);
  line-height: .95; letter-spacing: -.04em;
  margin-bottom: 28px;
}
.p-hero h1 .outline { -webkit-text-stroke-color: var(--lime); }
.p-hero .lead { margin-bottom: clamp(40px, 6vw, 64px); }
.p-index { border-top: 1px solid var(--line-inv); }
.p-index a {
  display: grid; grid-template-columns: minmax(52px, 80px) 1fr auto auto;
  gap: clamp(14px, 2.5vw, 40px); align-items: baseline;
  padding-block: 16px; border-bottom: 1px solid var(--line-inv);
  font-family: var(--font-m); font-size: .78rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--paper); transition: color .3s, padding-left .35s var(--ease-out);
}
.p-index a .p-i-client { font-family: var(--font-d); font-weight: 700; font-size: 1.05rem; letter-spacing: -.01em; text-transform: none; }
.p-index a .p-i-idx, .p-index a .p-i-cat { color: var(--muted-inv); }
.p-index a:hover { color: var(--lime); padding-left: 12px; }
.p-index a:hover .p-i-idx { color: var(--lime); }
.p-hero-watermark { position: absolute; right: -6vw; top: 8vh; width: clamp(260px, 30vw, 520px); opacity: .05; pointer-events: none; }

.case-detail-zone .case { scroll-margin-top: calc(var(--nav-h) + 12px); }
.case-detail-zone { padding-top: clamp(30px, 4vw, 60px); padding-bottom: clamp(80px, 10vw, 150px); }

/* quote variant on ink */
.quote.on-ink .quote-mark { color: rgba(201,242,39,.06); }
.quote.on-ink blockquote em { background: var(--lime); color: var(--ink); }
.quote.on-ink .qv-avatar { background: var(--lime); color: var(--ink); }
.quote.on-ink .qv-role { color: var(--muted-inv); }

/* ---------- Section media bands ---------- */
.section-band {
  margin-top: clamp(40px, 6vw, 72px);
  border-radius: 20px; overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 34px 70px -36px rgba(14,18,10,.4);
  position: relative;
}
.z-ink .section-band { border-color: var(--line-inv); box-shadow: 0 34px 70px -30px rgba(0,0,0,.7); }
.section-band img { width: 100%; height: clamp(170px, 26vw, 320px); object-fit: cover; display: block; }
.section-band::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  box-shadow: inset 0 0 0 1px rgba(201,242,39,.14);
  border-radius: inherit;
}

/* CTA textured backdrop */
.cta-photo {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background: url("../img/band-cta.png") center/cover no-repeat;
  opacity: .4;
  mask-image: radial-gradient(120% 110% at 75% 50%, black 20%, transparent 95%);
}

/* ---------- Section atmospheres (blurred brand imagery) ---------- */
.probsol, .steps, .who { position: relative; overflow: hidden; }
.probsol > .container, .steps > .container, .who > .container { position: relative; z-index: 1; }
.sec-atmos {
  position: absolute; z-index: 0; pointer-events: none;
  background-repeat: no-repeat; background-size: cover;
  filter: blur(52px) saturate(1.06);
}
/* solutions — light section: soft green haze to the right */
.atmos-solutions {
  inset: -12% -12% -12% 32%;
  background-image: url("../img/band-solutions.png");
  background-position: right center;
  opacity: .32;
  mask-image: radial-gradient(78% 92% at 84% 42%, #000 0%, transparent 76%);
}
/* steps — dark section: full glowing atmosphere */
.atmos-steps {
  inset: -14%;
  background-image: url("../img/band-steps.png");
  background-position: center;
  opacity: .5;
  mask-image: radial-gradient(115% 120% at 68% 46%, #000 8%, transparent 84%);
}
/* who — light section: soft institutional glow to the right */
.atmos-who {
  inset: -12% -10% -12% 34%;
  background-image: url("../img/band-who.png");
  background-position: center;
  opacity: .28;
  mask-image: radial-gradient(82% 95% at 80% 46%, #000 0%, transparent 80%);
}

/* ---------- Scroll reveals ---------- */
[data-rv] { opacity: 0; transition: opacity .9s var(--ease-out), transform .9s var(--ease-out), clip-path .9s var(--ease-out); transition-delay: var(--d, 0s); will-change: opacity, transform; }
[data-rv="up"]   { transform: translateY(44px); }
[data-rv="left"] { transform: translateX(-44px); }
[data-rv="right"]{ transform: translateX(44px); }
[data-rv="clip"] { clip-path: inset(0 100% 0 0); transform: none; }
[data-rv="zoom"] { transform: scale(.94); }
[data-rv].in { opacity: 1; transform: none; clip-path: inset(0 0% 0 0); }

/* ---------- Consultation modal ---------- */
.modal-overlay {
  position: fixed; inset: 0; z-index: 400;
  background: rgba(14,18,10,.74); backdrop-filter: blur(7px);
  display: grid; place-items: center; padding: 20px;
  opacity: 0; visibility: hidden;
  transition: opacity .35s var(--ease-out), visibility .35s;
}
.modal-overlay.open { opacity: 1; visibility: visible; }
.modal {
  position: relative; width: min(560px, 100%);
  max-height: 92vh; overflow-y: auto;
  background: var(--ink-2); color: var(--paper);
  border: 1px solid var(--line-inv); border-radius: 22px;
  padding: clamp(26px, 4vw, 46px);
  box-shadow: 0 50px 100px -30px rgba(0,0,0,.85);
  transform: translateY(26px) scale(.98);
  transition: transform .45s var(--ease-out);
}
.modal-overlay.open .modal { transform: none; }
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--line-inv); color: var(--paper);
  font-size: 1.4rem; line-height: 1; display: grid; place-items: center;
  transition: background .3s, color .3s, border-color .3s;
}
.modal-close:hover { background: var(--lime); color: var(--ink); border-color: var(--lime); }
.modal .kicker { color: var(--lime); margin-bottom: 14px; }
.modal h2 {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.5rem, 3vw, 2rem); letter-spacing: -.02em; line-height: 1.1;
  margin-bottom: 10px; color: var(--paper);
}
.modal-sub { color: rgba(245,246,236,.7); font-size: .96rem; margin-bottom: 26px; }
.consult-form { display: flex; flex-direction: column; gap: 15px; }
.consult-form label {
  display: flex; flex-direction: column; gap: 8px;
  font-family: var(--font-m); font-size: .66rem; letter-spacing: .1em;
  text-transform: uppercase; color: var(--muted-inv);
}
.consult-form input, .consult-form textarea {
  font-family: var(--font-b); font-size: .98rem; text-transform: none; letter-spacing: 0;
  color: var(--paper); background: var(--ink-3);
  border: 1px solid var(--line-inv); border-radius: 10px;
  padding: 13px 15px; width: 100%; resize: vertical;
  transition: border-color .3s, box-shadow .3s;
}
.consult-form input::placeholder, .consult-form textarea::placeholder { color: rgba(245,246,236,.34); }
.consult-form input:focus, .consult-form textarea:focus {
  outline: none; border-color: var(--lime); box-shadow: 0 0 0 3px rgba(201,242,39,.16);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.consult-form .btn { justify-content: center; margin-top: 8px; }
.consult-form .btn[disabled] { opacity: .6; cursor: wait; }
.form-note { font-family: var(--font-m); font-size: .6rem; letter-spacing: .05em; color: var(--muted-inv); text-transform: none; line-height: 1.5; }
.form-honey { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }
.form-error { color: #ff9b9b; font-size: .85rem; }
.consult-success { text-align: center; padding: 16px 0 8px; }
.consult-success .success-check {
  width: 66px; height: 66px; border-radius: 50%; margin: 0 auto 20px;
  background: var(--lime); color: var(--ink);
  display: grid; place-items: center; font-size: 2rem; font-weight: 700;
}
.consult-success h3 { font-family: var(--font-d); font-weight: 800; font-size: 1.45rem; margin-bottom: 10px; color: var(--paper); }
.consult-success p { color: rgba(245,246,236,.72); margin-bottom: 24px; }
@media (max-width: 520px) { .form-row { grid-template-columns: 1fr; } }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .case { align-items: stretch; }
  .case-body, .case:nth-of-type(even) .case-body { grid-column: 1 / 13; order: 1; }
  .case-visual-wrap, .case:nth-of-type(even) .case-visual-wrap { grid-column: 1 / 13; order: 2; }
  .footer-top { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .steps-grid { grid-template-columns: 1fr 1fr; row-gap: 40px; }
  .cta-inner { grid-template-columns: 1fr; }
  .cta-badge { display: none; }
  .steps-mark { display: none; }
}

@media (max-width: 940px) {
  .hero-inner { grid-template-columns: 1fr; gap: clamp(36px, 7vw, 56px); padding-top: calc(var(--nav-h) + 6vh); }
  .hero-copy { max-width: 640px; }
  .hero-visual { max-width: 340px; justify-self: start; }
  .hero-title { font-size: clamp(2.5rem, 8vw, 3.6rem); }
}

@media (max-width: 860px) {
  .nav-links { display: none; }
  .burger { display: flex; }
  .btn-nav { display: none; }
  .hero-meta { display: none; }
  .prob-row { grid-template-columns: minmax(52px, 70px) 1fr minmax(36px, 48px); }
  .prob-row p { grid-column: 2; }
  .prob-x { grid-row: 1; grid-column: 3; }
  .sol-grid { grid-template-columns: 1fr; }
  .sol-card:nth-child(2), .sol-card:nth-child(3) { margin-top: 0; }
  .sol-card { min-height: 0; }
  .p-index a { grid-template-columns: minmax(40px, 56px) 1fr auto; }
  .p-index a .p-i-cat { display: none; }
}

@media (max-width: 620px) {
  .steps-grid { grid-template-columns: 1fr; }
  .step { padding-right: 0; }
  .who-row { grid-template-columns: minmax(44px, 60px) 1fr auto; }
  .score-row { flex-direction: column; }
  .footer-top { grid-template-columns: 1fr; }
  .case-ghost { font-size: 4.6rem; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  .hero-line > span { transform: none; animation: none; }
  .hero-sub, .hero-ctas { opacity: 1; animation: none; }
  [data-rv] { opacity: 1; transform: none; clip-path: none; }
  .ticker-track, .refs-track { animation: none; flex-wrap: wrap; }
}

/* ============================================================
   h3v-crystal — Lumen Prism (saf CSS 3D floating crystal)
   Tüm seçiciler .hero3d / .h3v- altında kapsüllenmiştir.
   ============================================================ */
.hero3d.h3v-crystal{
  width:100%;
  max-width:460px;
  aspect-ratio:1/1;
  margin:0 auto;
  position:relative;
  /* fasetlerde kullanılan ortak ölçüler */
  --apo:69px;          /* apothem — girdle kenarına uzaklık */
  --tc:39deg;          /* taç (crown) eğimi */
  --tp:-26deg;         /* dip (pavilion) eğimi */
}

.h3v-crystal .h3v-scene{
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  perspective:1200px;
  perspective-origin:50% 44%;
  transform-origin:50% 50%;
}

/* --- arka fon parıltısı (tek yumuşak blur) --- */
.h3v-crystal .h3v-glow{
  position:absolute;
  width:78%;
  height:78%;
  border-radius:50%;
  background:
    radial-gradient(circle at 50% 50%,
      rgba(201,242,39,.32) 0%,
      rgba(168,207,14,.14) 34%,
      rgba(201,242,39,0) 66%);
  filter:blur(14px);
  opacity:.85;
  animation:h3v-crystal-pulse 6.5s ease-in-out infinite;
}

/* --- sahne: nazik süzülme (bob + hafif eğim) --- */
.h3v-crystal .h3v-stage{
  position:relative;
  width:1px;height:1px;
  transform-style:preserve-3d;
  transform:translateY(0) rotateX(-6deg);
  animation:h3v-crystal-bob 7s ease-in-out infinite;
}

/* --- içteki ışık çekirdeği (kristali içeriden aydınlatır) --- */
.h3v-crystal .h3v-core{
  position:absolute;
  left:50%;top:50%;
  width:150px;height:150px;
  margin:-75px 0 0 -75px;
  border-radius:50%;
  background:
    radial-gradient(circle at 50% 46%,
      rgba(245,246,236,.95) 0%,
      rgba(217,248,107,.7) 16%,
      rgba(201,242,39,.35) 38%,
      rgba(201,242,39,0) 70%);
  filter:blur(5px);
  transform:translateZ(0);
  animation:h3v-crystal-core 4.6s ease-in-out infinite;
}

/* --- dönen mücevher gövdesi --- */
.h3v-crystal .h3v-spin{
  position:absolute;
  left:0;top:0;
  transform-style:preserve-3d;
  transform:rotateY(-22deg);
  animation:h3v-crystal-spin 26s linear infinite;
}
.h3v-crystal .h3v-gem{
  position:absolute;
  left:0;top:0;
  transform-style:preserve-3d;
}

/* --- faset temeli --- */
.h3v-crystal .h3v-f{
  position:absolute;
  left:50%;top:50%;
  width:82px;
  backface-visibility:visible;
  overflow:hidden;
}
.h3v-crystal .h3v-f::after{
  content:"";
  position:absolute;
  inset:0;
  mix-blend-mode:screen;
  pointer-events:none;
}

/* Taç (üst) fasetleri — daha parlak, ışığı yakalayan yüzeyler */
.h3v-crystal .h3v-crown{
  height:112px;
  margin:-112px 0 0 -41px;
  transform-origin:50% 100%;
  clip-path:polygon(50% 0, 100% 100%, 0 100%);
  background:linear-gradient(155deg,
    rgba(217,248,107,.62) 0%,
    rgba(201,242,39,.34) 44%,
    rgba(168,207,14,.10) 100%);
  box-shadow:inset 0 -1px 0 rgba(217,248,107,.55);
  transform:rotateY(calc(var(--i) * 60deg)) translateZ(var(--apo)) rotateX(var(--tc));
}
.h3v-crystal .h3v-crown::after{
  background:linear-gradient(158deg,
    rgba(245,246,236,.55) 0%,
    rgba(245,246,236,0) 42%);
}

/* Dip (alt) fasetleri — daha uzun ve derin, sivri elmas ucu */
.h3v-crystal .h3v-pav{
  height:158px;
  margin:0 0 0 -41px;
  transform-origin:50% 0;
  clip-path:polygon(50% 100%, 100% 0, 0 0);
  background:linear-gradient(200deg,
    rgba(201,242,39,.42) 0%,
    rgba(168,207,14,.20) 52%,
    rgba(14,18,10,.06) 100%);
  box-shadow:inset 0 1px 0 rgba(217,248,107,.45);
  transform:rotateY(calc(var(--i) * 60deg)) translateZ(var(--apo)) rotateX(var(--tp));
}
.h3v-crystal .h3v-pav::after{
  background:linear-gradient(200deg,
    rgba(245,246,236,.32) 0%,
    rgba(245,246,236,0) 46%);
}

/* --- ince eğik yörünge halkaları --- */
.h3v-crystal .h3v-orbit{
  position:absolute;
  left:50%;top:50%;
  border-radius:50%;
  border:1px solid rgba(201,242,39,.28);
  box-shadow:0 0 10px rgba(201,242,39,.12);
}
.h3v-crystal .h3v-orbit-1{
  width:322px;height:322px;
  margin:-161px 0 0 -161px;
  transform:rotateX(74deg) rotateZ(0deg);
  animation:h3v-crystal-ring1 17s linear infinite;
}
.h3v-crystal .h3v-orbit-2{
  width:250px;height:250px;
  margin:-125px 0 0 -125px;
  border-color:rgba(217,248,107,.22);
  transform:rotateX(68deg) rotateY(26deg) rotateZ(0deg);
  animation:h3v-crystal-ring2 23s linear infinite;
}

/* --- yörüngede dolanan parıltı noktaları --- */
.h3v-crystal .h3v-dots{
  position:absolute;
  left:50%;top:50%;
  transform-style:preserve-3d;
  transform:rotateX(72deg) rotateZ(0deg);
  animation:h3v-crystal-dots 19s linear infinite;
}
.h3v-crystal .h3v-dot{
  position:absolute;
  left:0;top:0;
  width:6px;height:6px;
  margin:-3px 0 0 -3px;
  border-radius:50%;
  background:var(--lime, #C9F227);
  box-shadow:0 0 8px rgba(201,242,39,.85), 0 0 3px rgba(245,246,236,.9);
  transform:rotateZ(calc(var(--i) * 72deg)) translateX(150px);
}

/* ================= keyframes ================= */
@keyframes h3v-crystal-spin{
  from{ transform:rotateY(0deg); }
  to{ transform:rotateY(360deg); }
}
@keyframes h3v-crystal-bob{
  0%,100%{ transform:translateY(-7px) rotateX(-7deg); }
  50%{ transform:translateY(9px) rotateX(-3deg); }
}
@keyframes h3v-crystal-core{
  0%,100%{ opacity:.6; transform:translateZ(0) scale(.9); }
  50%{ opacity:1; transform:translateZ(0) scale(1.06); }
}
@keyframes h3v-crystal-pulse{
  0%,100%{ opacity:.62; transform:scale(.96); }
  50%{ opacity:1; transform:scale(1.05); }
}
@keyframes h3v-crystal-ring1{
  from{ transform:rotateX(74deg) rotateZ(0deg); }
  to{ transform:rotateX(74deg) rotateZ(360deg); }
}
@keyframes h3v-crystal-ring2{
  from{ transform:rotateX(68deg) rotateY(26deg) rotateZ(360deg); }
  to{ transform:rotateX(68deg) rotateY(26deg) rotateZ(0deg); }
}
@keyframes h3v-crystal-dots{
  from{ transform:rotateX(72deg) rotateZ(0deg); }
  to{ transform:rotateX(72deg) rotateZ(360deg); }
}

/* ================= responsive ================= */
@media (max-width:940px){
  .hero3d.h3v-crystal{ max-width:380px; }
  .h3v-crystal .h3v-scene{ transform:scale(.84); }
}
@media (max-width:520px){
  .hero3d.h3v-crystal{ max-width:300px; }
  .h3v-crystal .h3v-scene{ transform:scale(.64); }
}

/* ================= reduced motion (dolu, güzel duruş) ================= */
@media (prefers-reduced-motion:reduce){
  .hero3d.h3v-crystal *{ animation:none !important; }
  .h3v-crystal .h3v-core{ opacity:1; }
  .h3v-crystal .h3v-glow{ opacity:.85; }
}

/* ============================================================
   HAKKIMIZDA / About (lime gate)
   ============================================================ */
.about { padding-bottom: clamp(80px, 11vw, 150px); }
.about .sec-head { margin-bottom: clamp(16px, 2vw, 26px); }

/* vizyon üst bloğu */
.about-intro {
  display: grid;
  grid-template-columns: 1.12fr .88fr;
  gap: clamp(24px, 4vw, 64px);
  align-items: center;
}
.about-lead {
  font-size: clamp(1.05rem, 1.5vw, 1.28rem);
  line-height: 1.6; color: var(--ink); max-width: 60ch;
}
.about-lead strong { font-weight: 700; }
.about-vision {
  border-left: 3px solid var(--ink);
  padding: 4px 0 4px clamp(18px, 2vw, 30px);
}
.about-vision-k { display: block; color: rgba(14,18,10,.6); margin-bottom: 12px; }
.about-vision blockquote {
  font-family: var(--font-d); font-weight: 800;
  font-size: clamp(1.25rem, 2.1vw, 1.9rem);
  line-height: 1.16; letter-spacing: -.02em; text-wrap: balance;
}
.about-vision blockquote em {
  background: var(--ink); color: var(--lime);
  padding: 0 .14em; font-style: normal; border-radius: 3px;
}

/* ekip kartları (4'lü) */
.about-team {
  display: grid; grid-template-columns: repeat(4, 1fr);
  gap: clamp(14px, 1.6vw, 22px);
  margin-top: clamp(40px, 5vw, 68px);
  align-items: stretch;
}
.about-card {
  position: relative;
  background: var(--ink); color: var(--paper);
  border: 1.5px solid var(--ink); border-radius: 18px;
  padding: clamp(22px, 2vw, 30px);
  display: flex; flex-direction: column; gap: 16px;
  transition: transform .45s var(--ease-out), box-shadow .45s var(--ease-out);
}
.about-card:hover { transform: translateY(-6px); box-shadow: 8px 8px 0 var(--ink); }
.about-card-idx { color: var(--muted-inv); letter-spacing: .16em; }
.about-head { display: flex; align-items: center; gap: 14px; }
.about-av {
  width: 54px; height: 54px; border-radius: 50%; flex: none; overflow: hidden;
  background: var(--lime); color: var(--ink);
  display: grid; place-items: center;
  font-family: var(--font-d); font-weight: 900; font-size: 1rem; letter-spacing: -.01em;
  box-shadow: 0 0 0 3px rgba(201,242,39,.18);
}
.about-av img { width: 100%; height: 100%; object-fit: cover; border-radius: 50%; }
.about-id { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.about-name {
  font-family: var(--font-d); font-weight: 800; font-size: 1.06rem;
  line-height: 1.12; letter-spacing: -.01em; color: var(--paper);
}
.about-role {
  font-family: var(--font-m); font-size: .62rem; letter-spacing: .08em;
  text-transform: uppercase; color: var(--lime); line-height: 1.4;
}
.about-edu {
  align-self: flex-start;
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-m); font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  color: var(--paper);
  border: 1px solid var(--line-inv); border-radius: 100px;
  padding: 6px 12px;
}
.about-edu::before {
  content: ""; width: 7px; height: 7px; border-radius: 50%;
  background: var(--lime); flex: none; box-shadow: 0 0 8px 1px rgba(201,242,39,.6);
}
.about-card > p {
  font-size: .9rem; line-height: 1.6;
  color: rgba(245,246,236,.72); margin-top: auto;
}

/* mobil menüde 6. bağlantı için ritim */
.menu-overlay nav a:nth-child(6) { transition-delay: .30s; }

@media (max-width: 1080px) {
  .about-team { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .about-intro { grid-template-columns: 1fr; gap: 26px; }
}
@media (max-width: 560px) {
  .about-team { grid-template-columns: 1fr; max-width: 480px; }
}

/* ============================================================
   Hero amblemi — 3D interaktif yükseltme (mouse ile tilt)
   ============================================================ */
.hero-visual { perspective: 1000px; }
.orb { transform-style: preserve-3d; will-change: transform; }
.orb-glow, .orb-ring, .orb-orbit, .orb-core { transform-style: preserve-3d; }

/* dönen holografik parıltı (yeni katman, HTML gerektirmez) */
.orb::before {
  content: ""; position: absolute; inset: 19%; border-radius: 50%;
  background: conic-gradient(from 0deg,
    transparent 0%, rgba(201,242,39,.24) 11%, transparent 30%,
    transparent 54%, rgba(201,242,39,.15) 67%, transparent 85%);
  filter: blur(2px); opacity: .75; pointer-events: none;
  animation: spin 15s linear infinite;
  transition: opacity .4s var(--ease-out);
}

/* derinlik: parıltı arkada, çekirdek önde -> tilt'te parallax */
@keyframes orbGlow { 0%,100% { opacity:.62; transform: translateZ(-46px) scale(1);} 50% { opacity:1; transform: translateZ(-46px) scale(1.08);} }
.orb-core { animation: coreFloat3d 7s ease-in-out infinite; transition: box-shadow .45s var(--ease-out), border-color .45s var(--ease-out); }
@keyframes coreFloat3d { 0%,100% { transform: translateZ(64px) translateY(0);} 50% { transform: translateZ(64px) translateY(-12px);} }
.orb-core svg { filter: drop-shadow(0 0 14px rgba(201,242,39,.5)); }

/* hover: canlanma */
.hero-visual:hover .orb-glow { opacity: 1; }
.hero-visual:hover .orb::before { opacity: 1; }
.hero-visual:hover .orb-core {
  border-color: rgba(201,242,39,.62);
  box-shadow: 0 30px 62px -18px rgba(0,0,0,.9), 0 0 46px -6px rgba(201,242,39,.4), inset 0 0 0 1px rgba(245,246,236,.06);
}


/* ============ Hero CTA — yüksek dikkat (solid lime + glow + sert gölge + parıltı) ============
   - Yalnızca .hero-ctas'a scope'lu; global .btn* (modal/projeler) dokunulmaz.
   - Dikkat box-shadow / background / ::before ile verilir; butonun kendi
     transform'una hiç dokunulmaz (magnetic JS ile çakışmaz).
   - Birincil parlak lime + nabız glow + imza sert offset gölge + kayan parıltı;
     ikincil sessiz cam-ghost kalır. Erişilebilir + reduced-motion güvenli.
   ============================================================ */
.hero-ctas .btn {
  padding: 18px 32px; border-radius: 14px;
  transition: background .3s var(--ease-out), color .3s var(--ease-out),
              transform .3s var(--ease-out), border-color .3s var(--ease-out),
              box-shadow .4s var(--ease-out);
}
.hero-ctas .btn .arr { font-size: 1.06em; }

/* ---------------- BİRİNCİL: parlak lime göz mıknatısı ---------------- */
.hero-ctas .btn-ink-lime {
  position: relative; isolation: isolate; overflow: hidden;
  background: linear-gradient(145deg, var(--lime-soft), var(--lime));
  color: var(--ink); border-color: var(--lime); font-weight: 700;
  box-shadow:
    7px 7px 0 0 var(--lime-deep),                 /* imza sert offset (kütle) */
    0 16px 40px -12px rgba(201,242,39,.60),        /* yumuşak lime drop */
    0 0 26px -2px rgba(201,242,39,.55);            /* aura */
  animation: ctaGlow 2.8s ease-in-out infinite;
}
/* yüzeyden geçen beyaz parıltı — metnin ALTINDA (z-index:-1) kalır */
.hero-ctas .btn-ink-lime::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: linear-gradient(115deg, transparent 32%, rgba(255,255,255,.55) 50%, transparent 68%);
  transform: translateX(-140%);
  animation: ctaSheen 3.8s ease-in-out infinite;
}
.hero-ctas .btn-ink-lime:hover {
  background: linear-gradient(145deg, #E4FF7A, var(--lime-soft));
  color: var(--ink); border-color: var(--lime-soft);
  animation: none;                               /* nabız durur -> net hover glow */
  box-shadow:
    10px 10px 0 0 var(--lime-deep),               /* sert offset büyür (transform'suz kaldırma) */
    0 0 0 3px rgba(201,242,39,.20),
    0 24px 54px -12px rgba(201,242,39,.95),
    0 0 46px 0 rgba(201,242,39,.80);
}

/* ---------------- İKİNCİL: sessiz destekleyici ghost ---------------- */
.hero-ctas .btn-ghost-inv {
  background: rgba(245,246,236,.06);
  color: var(--paper); border-color: rgba(245,246,236,.60);
  box-shadow:
    0 0 0 1px rgba(245,246,236,.05),
    0 10px 26px -18px rgba(245,246,236,.50);
}
.hero-ctas .btn-ghost-inv:hover {
  background: var(--paper); color: var(--ink); border-color: var(--paper);
  box-shadow:
    0 0 0 2px rgba(245,246,236,.25),
    0 16px 36px -14px rgba(0,0,0,.55);
}

/* ---------------- :focus-visible (koyu hero'da yüksek kontrast paper halka) ---------------- */
.hero-ctas .btn:focus-visible { outline: 3px solid var(--paper); outline-offset: 4px; }

/* ---------------- Keyframes (benzersiz isimler) ---------------- */
@keyframes ctaGlow {
  0%, 100% {
    box-shadow:
      7px 7px 0 0 var(--lime-deep),
      0 16px 40px -12px rgba(201,242,39,.55),
      0 0 22px -4px rgba(201,242,39,.45);
  }
  50% {
    box-shadow:
      7px 7px 0 0 var(--lime-deep),
      0 18px 46px -10px rgba(201,242,39,.75),
      0 0 34px -2px rgba(201,242,39,.72);
  }
}
@keyframes ctaSheen {
  0%       { transform: translateX(-140%); }
  55%,100% { transform: translateX(140%); }
}

/* ---------------- Reduced motion: döngü yok ama hâlâ parlak/baskın ---------------- */
@media (prefers-reduced-motion: reduce) {
  .hero-ctas .btn-ink-lime { animation: none !important; }
  .hero-ctas .btn-ink-lime::before { display: none; }
  .hero-ctas .btn-ink-lime {
    box-shadow:
      7px 7px 0 0 var(--lime-deep),
      0 16px 40px -12px rgba(201,242,39,.60),
      0 0 26px -2px rgba(201,242,39,.55);
  }
}

/* ============================================================
   Hero kristali — premium cila + mouse etkilesimi (v2)
   ============================================================ */
.hero-visual { perspective: 1150px; }
.hero3d.h3v-crystal { will-change: transform; }

/* daha parlak, camsi crown fasetleri */
.h3v-crystal .h3v-crown {
  background: linear-gradient(155deg,
    rgba(235,253,158,.82) 0%, rgba(201,242,39,.44) 42%, rgba(168,207,14,.12) 100%);
  box-shadow: inset 0 -1px 0 rgba(235,253,158,.72), inset 0 0 12px rgba(201,242,39,.26);
}
.h3v-crystal .h3v-pav {
  background: linear-gradient(200deg,
    rgba(201,242,39,.5) 0%, rgba(168,207,14,.24) 50%, rgba(14,18,10,.04) 100%);
  box-shadow: inset 0 1px 0 rgba(235,253,158,.56), inset 0 0 14px rgba(201,242,39,.18);
}
/* komsu fasetlerde parlaklik farki -> cok yuzeyli pirilti */
.h3v-crystal .h3v-crown:nth-of-type(2n) { filter: brightness(1.2); }
.h3v-crystal .h3v-crown:nth-of-type(3n) { filter: brightness(.8); }
.h3v-crystal .h3v-pav:nth-of-type(2n)   { filter: brightness(1.16); }
.h3v-crystal .h3v-pav:nth-of-type(3n)   { filter: brightness(.84); }

/* daha zengin parilti + cekirdek */
.h3v-crystal .h3v-glow {
  background: radial-gradient(circle at 50% 50%,
    rgba(235,253,158,.4) 0%, rgba(201,242,39,.18) 32%, rgba(201,242,39,0) 66%);
}
.h3v-crystal .h3v-core {
  background: radial-gradient(circle at 50% 44%,
    rgba(255,255,255,.98) 0%, rgba(235,253,158,.82) 14%, rgba(201,242,39,.42) 36%, rgba(201,242,39,0) 70%);
}

/* hover: canlanma */
.hero-visual:hover .h3v-glow { opacity: 1; filter: blur(17px); }
.hero-visual:hover .h3v-core { filter: blur(4px); }

/* ozel imlec halkasi kaldirildi (kullanici istegi) — normal imlec kalsin */
.cursor-dot, .cursor-ring { display: none !important; }