/* ════════════════════════════════════════════════════════════════════════
   ProYA · pages/index/index.css
   ────────────────────────────────────────────────────────────────────────
   Anasayfa — section-namespaced rules only.
   Globals come from ../../design-system/{tokens,base,components}.css
   ════════════════════════════════════════════════════════════════════════ */

/* ═══════════════════════════════════════════════════════════════════════
   00 — HERO  (exact 100vh, grid: content + foot inside same box)
   ═══════════════════════════════════════════════════════════════════════ */
.hero-sec {
  position: relative;
  height: 100vh;
  height: calc(var(--vh, 1vh) * 100);
  height: 100svh;
  min-height: 640px;
  background: var(--bg-deep);
  color: var(--ink-bone);
  overflow: hidden;
  display: grid;
  grid-template-rows: 1fr auto;
  padding: 0;
}
.hero-sec::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      180deg,
      oklch(0.135 0.006 60 / 0.62) 0%,
      oklch(0.135 0.006 60 / 0.22) 40%,
      oklch(0.135 0.006 60 / 0.55) 78%,
      oklch(0.135 0.006 60 / 0.95) 100%
    );
  z-index: 2;
  pointer-events: none;
}

.hero-sec__media {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}
.hero-sec__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
  transform: scale(1.06);
  will-change: transform;
}

/* Vertical edge rails (mono captions) */
.hero-sec__rail {
  position: absolute;
  z-index: 3;
  top: 96px;
  bottom: 96px;
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: oklch(0.78 0.010 65);
  pointer-events: none;
}
.hero-sec__rail--left  { left: 20px;  flex-direction: column; }
.hero-sec__rail--right { right: 20px; flex-direction: column; align-items: flex-end; }
.hero-sec__rail--left span {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
}
.hero-sec__rail--right span {
  writing-mode: vertical-rl;
}
.hero-sec__rail--left span:last-child,
.hero-sec__rail--right span:last-child { color: var(--ink-bone); }

@media (max-width: 1020px) {
  .hero-sec__rail { display: none; }
}

/* Content area */
.hero-sec__body {
  position: relative;
  z-index: 3;
  align-self: end;
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 0 var(--container-padding) clamp(36px, 4vw, 64px);
  display: grid;
  /* minmax(0,1fr) lets the column shrink below its content's min-content,
     so a non-wrapping child (eyebrow) can't blow the track past the
     viewport on narrow screens. */
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 40px);
}

.hero-sec__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-bone);
  opacity: 0.86;
  width: max-content;
  max-width: 100%;      /* never exceed the (now shrinkable) grid column */
  flex-wrap: wrap;      /* wrap gracefully on very narrow screens */
}
.hero-sec__eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 4px oklch(0.47 0.125 253 / 0.22);
}
.hero-sec__eyebrow-rule {
  width: 28px; height: 1px;
  background: oklch(0.78 0.010 65 / 0.55);
}

.hero-sec__title {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: clamp(56px, 8.4vw, 138px);
  line-height: 0.94;
  letter-spacing: -0.04em;
  color: var(--ink-bone);
  text-wrap: balance;
  max-width: 17ch;
  margin: 0;
}
.hero-sec__title .serif-i {
  color: oklch(0.96 0.020 60);
  letter-spacing: 0;
  margin-inline: 0.04em;
  font-weight: 400;
}
.hero-sec__title .word {
  display: inline-block;
  overflow: hidden;
  vertical-align: bottom;
}
.hero-sec__title .word > span {
  display: inline-block;
  transform: translateY(110%);
  will-change: transform;
}

.hero-sec__meta {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: end;
}
@media (min-width: 800px) {
  .hero-sec__meta { grid-template-columns: 1.6fr auto auto; gap: 48px; }
}
.hero-sec__lede {
  font-family: var(--ff-display);
  font-weight: 400;
  font-size: clamp(15px, 1.25vw, 17px);
  line-height: 1.55;
  color: oklch(0.84 0.010 70);
  letter-spacing: -0.003em;
  max-width: 48ch;
}
.hero-sec__stat {
  display: flex; flex-direction: column; gap: 6px;
  padding-top: 12px;
  border-top: 1px solid oklch(0.55 0.012 60 / 0.4);
  min-width: 140px;
}
.hero-sec__stat-num {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: 32px;
  letter-spacing: -0.025em;
  color: var(--ink-bone);
  font-feature-settings: "tnum";
}
.hero-sec__stat-label {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: oklch(0.72 0.010 65);
}

.hero-sec__cta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}
.hero-sec__cta-row .btn--primary {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--bg);
}
.hero-sec__cta-row .btn--primary:hover {
  background: var(--signal);
  border-color: var(--signal);
  color: var(--ink-on-signal);
}
.hero-sec__cta-row .btn--ghost {
  color: var(--ink-bone);
  border-color: oklch(0.55 0.012 60 / 0.5);
}
.hero-sec__cta-row .btn--ghost:hover { border-color: var(--ink-bone); }

/* Foot row — kept INSIDE 100vh box */
.hero-sec__foot {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 16px var(--container-padding);
  border-top: 1px solid oklch(0.55 0.012 60 / 0.35);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: oklch(0.72 0.010 65);
}
.hero-sec__chips {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}
.hero-sec__chips span strong {
  color: var(--ink-bone);
  font-weight: 500;
  margin-left: 8px;
}
.hero-sec__scroll {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink-bone);
}
.hero-sec__scroll-line {
  position: relative;
  width: 40px; height: 1px;
  background: oklch(0.55 0.012 60 / 0.5);
  overflow: hidden;
}
.hero-sec__scroll-line::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--signal);
  transform: translateX(-100%);
  animation: scrollLine 2.6s var(--ease) infinite;
}
@keyframes scrollLine {
  0% { transform: translateX(-100%); }
  60%, 100% { transform: translateX(100%); }
}

@media (max-width: 800px) {
  .hero-sec__foot { grid-template-columns: 1fr; gap: 12px; padding: 14px var(--container-padding); }
  .hero-sec__chips { gap: 16px; font-size: 10px; }
  .hero-sec__stat-num { font-size: 26px; }
}
@media (max-width: 560px) {
  .hero-sec__meta { grid-template-columns: 1fr 1fr; }
  .hero-sec__lede { grid-column: 1 / -1; }
}

/* ═══════════════════════════════════════════════════════════════════════
   01 — MANIFESTO
   ═══════════════════════════════════════════════════════════════════════ */
.man-sec {
  background: var(--bg);
  color: var(--ink);
}
.man-sec .container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
}
@media (min-width: 1000px) {
  .man-sec .container {
    grid-template-columns: 1fr 2fr;
    gap: 96px;
  }
}
.man-sec__rail {
  align-self: start;
  position: sticky;
  top: 120px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}
.man-sec__rail-id {
  font-family: var(--ff-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink);
  font-weight: 500;
}
.man-sec__rail-meta {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Vertical photo strip in the sticky aside (architectural detail) */
.man-sec__rail-photo {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--r-sm);
  margin-top: 8px;
  background: var(--bg-3);
}
.man-sec__rail-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  transition: transform 1.2s var(--ease);
}
.man-sec__rail-photo:hover img { transform: scale(1.08); }
.man-sec__rail-photo::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(180deg,
    oklch(0.135 0.006 60 / 0) 65%,
    oklch(0.135 0.006 60 / 0.55) 100%);
  pointer-events: none;
}
.man-sec__rail-photo-label {
  position: absolute;
  left: 12px;
  bottom: 10px;
  z-index: 2;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-bone);
  display: flex;
  align-items: center;
  gap: 8px;
}
.man-sec__rail-photo-label::before {
  content: "";
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--signal);
}
@media (max-width: 1000px) {
  .man-sec__rail-photo { display: none; }
}

.man-sec__body {
  display: flex;
  flex-direction: column;
  gap: 36px;
}
.man-sec__head {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(34px, 4.2vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.028em;
  color: var(--ink);
  text-wrap: balance;
}
.man-sec__head .serif-i {
  color: var(--signal-deep);
  letter-spacing: 0;
  margin-inline: 0.06em;
}

.man-sec__line {
  display: block;
  overflow: hidden;
}
.man-sec__line > span {
  display: inline-block;
  transform: translateY(110%);
  will-change: transform;
}

.man-sec__copy {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.62;
  color: var(--ink-2);
}
@media (min-width: 800px) {
  .man-sec__copy { grid-template-columns: 1fr 1fr; }
}
.man-sec__copy p:first-of-type::first-letter {
  font-family: var(--ff-serif);
  font-style: italic;
  font-size: 3.4em;
  float: left;
  line-height: 0.88;
  padding: 6px 12px 0 0;
  color: var(--ink);
}

.man-sec__sig {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  flex-wrap: wrap;
}
.man-sec__sig strong { color: var(--ink); font-weight: 500; }

/* ═══════════════════════════════════════════════════════════════════════
   02 — DİSİPLİNLER (Capability matrix)
   ═══════════════════════════════════════════════════════════════════════ */
.cap-sec {
  background: var(--bg-2);
  color: var(--ink);
  position: relative;
}
.cap-sec__list {
  border-top: 1px solid var(--line);
}
.cap-row {
  position: relative;
  display: grid;
  grid-template-columns: 80px 1.4fr 2fr 80px;
  gap: 32px;
  align-items: start;
  padding: clamp(28px, 3.6vw, 44px) clamp(28px, 3vw, 48px);
  border-bottom: 1px solid var(--line);
  transition: color var(--dur-300) var(--ease);
  cursor: none;
}
@media (max-width: 800px) {
  .cap-row {
    grid-template-columns: 56px 1fr;
    gap: 16px 20px;
    padding: clamp(24px, 3vw, 32px) clamp(20px, 3vw, 28px);
  }
  .cap-row__desc { grid-column: 2; }
  .cap-row__year { display: none; }
}
/* Hover bg — soft smoke fade on left/right edges via mask gradient */
.cap-row::before {
  content: "";
  position: absolute;
  inset: 6px 0;
  background: var(--bg);
  opacity: 0;
  transition: opacity var(--dur-500) var(--ease);
  z-index: 0;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(90deg,
    transparent 0%,
    rgba(0,0,0,0.4) 4%,
    black 10%,
    black 90%,
    rgba(0,0,0,0.4) 96%,
    transparent 100%);
          mask-image: linear-gradient(90deg,
    transparent 0%,
    rgba(0,0,0,0.4) 4%,
    black 10%,
    black 90%,
    rgba(0,0,0,0.4) 96%,
    transparent 100%);
}
.cap-row > * { position: relative; z-index: 2; }
.cap-row:hover::before { opacity: 1; }
.cap-row:hover .cap-row__title { color: var(--signal-deep); }
.cap-row:hover .cap-row__id    { color: var(--signal); }

.cap-row__id {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  text-transform: uppercase;
  padding-top: 6px;
  font-weight: 500;
  transition: color var(--dur-300) var(--ease);
}
.cap-row__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(20px, 1.9vw, 26px);
  line-height: 1.2;
  letter-spacing: -0.018em;
  color: var(--ink);
  transition: color var(--dur-300) var(--ease);
  text-wrap: balance;
}
.cap-row__desc {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 60ch;
}
.cap-row__desc ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 8px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.cap-row__desc ul li::before {
  content: "—";
  margin-right: 10px;
  color: var(--signal);
}
.cap-row__year {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-transform: uppercase;
  text-align: right;
  padding-top: 8px;
}

/* ═══════════════════════════════════════════════════════════════════════
   03 — SİSTEMLER (Innovation triptych)
   ═══════════════════════════════════════════════════════════════════════ */
.sys-sec {
  background: var(--bg-deep);
  color: var(--ink-bone);
  overflow: hidden;
}
.sys-sec .sec-head__title { color: var(--ink-bone); }
.sys-sec .sec-head__id { border-top-color: var(--line-dark); color: var(--ink-3); }
.sys-sec .sec-head__id-num { color: var(--ink-bone); }

.sys-sec__intro {
  max-width: 64ch;
  margin-top: -24px;
  margin-bottom: 56px;
  color: oklch(0.78 0.010 65);
  font-size: 17px;
  line-height: 1.62;
}

.sys-stack {
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line-dark);
}
.sys-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-block: clamp(48px, 6vw, 96px);
  border-bottom: 1px solid var(--line-dark);
  align-items: center;
}
@media (min-width: 1000px) {
  .sys-card { grid-template-columns: 1fr 1.2fr; gap: 72px; }
  .sys-card--reverse .sys-card__media { order: 2; }
}

.sys-card__meta {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.sys-card__num {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--signal);
}
.sys-card__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(32px, 3.6vw, 56px);
  line-height: 1.05;
  letter-spacing: -0.028em;
  color: var(--ink-bone);
  text-wrap: balance;
  max-width: 14ch;
}
.sys-card__title .serif-i {
  letter-spacing: 0;
  color: oklch(0.94 0.030 60);
  margin-inline: 0.04em;
}
.sys-card__copy {
  font-size: 16px;
  line-height: 1.62;
  color: oklch(0.78 0.010 65);
  max-width: 52ch;
}
.sys-card__props {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
  margin-top: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--line-dark);
}
.sys-card__prop dt {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.sys-card__prop dd {
  font-family: var(--ff-display);
  font-size: 18px;
  font-weight: 500;
  color: var(--ink-bone);
  letter-spacing: -0.01em;
}
.sys-card__prop dd .unit {
  font-family: var(--ff-mono);
  font-size: 11px;
  color: var(--ink-3);
  margin-left: 4px;
  letter-spacing: 0.1em;
}

.sys-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--r-sm);
  background: var(--bg-3);
}
.sys-card--portrait .sys-card__media { aspect-ratio: 3 / 4; }
.sys-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  transition: transform var(--dur-900) var(--ease);
  will-change: transform;
}
.sys-card:hover .sys-card__img { transform: scale(1.06); }

.sys-card__diagram {
  position: absolute;
  inset: 0;
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.42;
}
.sys-card__diagram path,
.sys-card__diagram line,
.sys-card__diagram polyline,
.sys-card__diagram circle {
  fill: none;
  stroke: oklch(0.96 0.005 70 / 0.8);
  stroke-width: 0.8;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 800;
  stroke-dashoffset: 800;
  transition: stroke-dashoffset 1.6s var(--ease);
}
.sys-card__diagram circle {
  stroke: var(--signal);
  fill: var(--signal);
}
.sys-card.is-in-view .sys-card__diagram path,
.sys-card.is-in-view .sys-card__diagram line,
.sys-card.is-in-view .sys-card__diagram polyline,
.sys-card.is-in-view .sys-card__diagram circle {
  stroke-dashoffset: 0;
}

.sys-card__corner-label {
  position: absolute;
  bottom: 14px;
  left: 14px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-bone);
  background: oklch(0.13 0.006 60 / 0.78);
  padding: 6px 10px;
  border-radius: var(--r-xs);
}

/* ═══════════════════════════════════════════════════════════════════════
   04 — VAKALAR (Project grid)
   ═══════════════════════════════════════════════════════════════════════ */
.proj-sec {
  background: var(--bg);
  color: var(--ink);
}
.proj-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px 32px;
}
@media (min-width: 900px) {
  .proj-sec__grid { grid-template-columns: 1fr 1fr; gap: 80px 32px; }
}
.proj-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  cursor: none;
}
.proj-card--wide { grid-column: 1 / -1; }

.proj-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--r-sm);
  background: var(--bg-3);
}
.proj-card--wide .proj-card__media { aspect-ratio: 16 / 8; }

.proj-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.05);
  transition: transform 1.2s var(--ease);
  will-change: transform;
}
.proj-card:hover .proj-card__img { transform: scale(1.1); }

.proj-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    oklch(0.135 0.006 60 / 0) 60%,
    oklch(0.135 0.006 60 / 0.78) 100%
  );
  opacity: 0;
  transition: opacity var(--dur-500) var(--ease);
  pointer-events: none;
  z-index: 1;
}
.proj-card:hover .proj-card__overlay { opacity: 1; }

.proj-card__hover-cta {
  position: absolute;
  left: 16px;
  bottom: 16px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  border-radius: var(--r-btn);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--dur-500) var(--ease),
              transform var(--dur-500) var(--ease);
  z-index: 2;
}
.proj-card__hover-cta svg {
  width: 12px; height: 12px;
  stroke: currentColor; stroke-width: 1.6; fill: none;
}
.proj-card:hover .proj-card__hover-cta {
  opacity: 1; transform: translateY(0);
}

.proj-card__mask {
  position: absolute;
  inset: 0;
  background: var(--bg);
  transform-origin: top;
  pointer-events: none;
}

.proj-card__badge {
  position: absolute;
  top: 14px;
  left: 14px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: oklch(0.96 0.005 70 / 0.92);
  color: var(--ink);
  border-radius: var(--r-xs);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.proj-card__badge-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--signal);
}

.proj-card__meta {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 20px;
  align-items: end;
  padding-top: 6px;
}
.proj-card__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(20px, 1.8vw, 26px);
  letter-spacing: -0.018em;
  color: var(--ink);
  line-height: 1.18;
  text-wrap: balance;
}
.proj-card__title .serif-i { letter-spacing: 0; color: var(--signal-deep); }
.proj-card__cta {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color var(--dur-300) var(--ease);
}
.proj-card:hover .proj-card__cta { color: var(--signal-deep); }

.proj-card__hud {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
@media (max-width: 600px) {
  .proj-card__hud { grid-template-columns: 1fr 1fr; }
}
.proj-card__hud > div { display: flex; flex-direction: column; gap: 4px; }
.proj-card__hud strong { color: var(--ink); font-weight: 500; }

/* ═══════════════════════════════════════════════════════════════════════
   08 — 3B MODELLER (Sketchfab interactive)
   Composes from proj-card visual language: same media radius, badge,
   overlay, hairline HUD. Adds a click-to-load viewer (no iframe until
   the operator opts in — keeps 10 WebGL embeds off the initial load).
   ═══════════════════════════════════════════════════════════════════════ */
.models-sec {
  background: var(--bg);
  color: var(--ink);
  border-top: 1px solid var(--line);
}
.models-sec__intro {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px 40px;
  margin-bottom: clamp(36px, 4vw, 56px);
}
.models-sec__lede { max-width: 60ch; margin: 0; }
.models-sec__all {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--ink);
  transition: color var(--dur-300) var(--ease),
              border-color var(--dur-300) var(--ease);
}
.models-sec__all svg {
  width: 13px; height: 13px;
  stroke: currentColor; stroke-width: 1.4; fill: none;
  transition: transform var(--dur-300) var(--ease);
}
.models-sec__all:hover { color: var(--signal-deep); border-color: var(--signal); }
.models-sec__all:hover svg { transform: translate(2px, -2px); }

.models-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px 32px;
}
@media (min-width: 760px) {
  .models-sec__grid { grid-template-columns: 1fr 1fr; gap: 64px 32px; }
}

.model-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.model-card__viewer {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  border-radius: var(--r-sm);
  background: var(--bg-deep);
}
.model-card__poster {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.04);
  transition: transform 1.2s var(--ease), opacity var(--dur-500) var(--ease);
  will-change: transform;
}
.model-card:hover .model-card__poster { transform: scale(1.08); }

.model-card__badge {
  position: absolute;
  top: 14px; left: 14px;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  background: oklch(0.96 0.005 70 / 0.92);
  color: var(--ink);
  border-radius: var(--r-xs);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.model-card__badge-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--signal);
}
.model-card__tag {
  position: absolute;
  top: 14px; right: 14px;
  z-index: 2;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-bone);
  opacity: 0.82;
}

/* Click-to-load trigger — fills the viewer, dims poster behind it */
.model-card__load {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  background: oklch(0.135 0.006 60 / 0.32);
  color: var(--ink-bone);
  transition: background-color var(--dur-300) var(--ease);
  cursor: pointer;
}
.model-card__load:hover,
.model-card__load:focus-visible {
  background: oklch(0.135 0.006 60 / 0.5);
  outline: none;
}
.model-card__load-ring {
  width: 58px; height: 58px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid oklch(0.94 0.008 70 / 0.7);
  border-radius: 50%;
  transition: border-color var(--dur-300) var(--ease),
              background-color var(--dur-300) var(--ease),
              transform var(--dur-300) var(--ease);
}
.model-card__load-ring svg {
  width: 20px; height: 20px;
  fill: var(--ink-bone);
  margin-left: 3px;
  transition: fill var(--dur-300) var(--ease);
}
.model-card__load:hover .model-card__load-ring,
.model-card__load:focus-visible .model-card__load-ring {
  border-color: var(--signal);
  background: var(--signal);
  transform: scale(1.06);
}
.model-card__load:hover .model-card__load-ring svg,
.model-card__load:focus-visible .model-card__load-ring svg {
  fill: var(--ink-on-signal);
}
.model-card__load-label {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* Loaded state — iframe injected, chrome removed */
.model-card__viewer.is-loaded .model-card__load,
.model-card__viewer.is-loaded .model-card__badge,
.model-card__viewer.is-loaded .model-card__tag { display: none; }
.model-card__viewer.is-loaded .model-card__poster { opacity: 0; }
.model-card__frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  z-index: 4;
}
/* Brief loading hint between click and iframe paint */
.model-card__viewer.is-loading::after {
  content: "Yükleniyor…";
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex; align-items: center; justify-content: center;
  background: var(--bg-deep);
  color: var(--ink-3);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.model-card__meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px 20px;
  align-items: end;
  padding-top: 4px;
}
.model-card__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(19px, 1.6vw, 24px);
  letter-spacing: -0.018em;
  color: var(--ink);
  line-height: 1.18;
  text-wrap: balance;
}
.model-card__title .serif-i { letter-spacing: 0; color: var(--signal-deep); }
.model-card__open {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  white-space: nowrap;
  transition: color var(--dur-300) var(--ease);
}
.model-card__open:hover { color: var(--signal-deep); }

.model-card__hud {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.model-card__hud > div { display: flex; flex-direction: column; gap: 4px; }
.model-card__hud strong { color: var(--ink); font-weight: 500; }
@media (max-width: 440px) {
  .model-card__hud { grid-template-columns: 1fr 1fr; }
}

/* ═══════════════════════════════════════════════════════════════════════
   05 — ÖLÇÜM (Numbers)
   ═══════════════════════════════════════════════════════════════════════ */
.met-sec {
  background: var(--bg);
  color: var(--ink);
  border-top: 1px solid var(--line);
}
.met-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 800px) {
  .met-sec__grid { grid-template-columns: repeat(4, 1fr); }
}
.met-cell {
  padding: clamp(32px, 4vw, 56px) clamp(20px, 2.4vw, 36px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}
.met-cell:last-child { border-right: 0; }
@media (max-width: 800px) {
  .met-cell { border-right: 0; }
}
.met-cell__id {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.met-cell__num {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(56px, 7vw, 108px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  color: var(--ink);
  font-feature-settings: "tnum";
}
.met-cell__num .unit {
  font-family: var(--ff-mono);
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-left: 6px;
}
.met-cell__label {
  font-size: 14px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 28ch;
  margin-top: auto;
}

/* ═══════════════════════════════════════════════════════════════════════
   06 — BİLGİ BANKASI teaser
   ═══════════════════════════════════════════════════════════════════════ */
.kb-sec {
  background: var(--bg-2);
  color: var(--ink);
}
.kb-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: start;
}
@media (min-width: 900px) {
  .kb-sec__grid { grid-template-columns: 1.1fr 1fr; gap: 80px; }
}
.kb-feat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 22px;
}
.kb-feat__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border-radius: var(--r-sm);
  background: var(--bg-3);
}
.kb-feat__media img {
  width: 100%; height: 100%; object-fit: cover;
  transform: scale(1.04);
  transition: transform var(--dur-900) var(--ease);
}
.kb-feat:hover .kb-feat__media img { transform: scale(1.08); }
.kb-feat__hud {
  display: flex;
  gap: 14px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.kb-feat__hud .signal { color: var(--signal); }
.kb-feat__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.022em;
  color: var(--ink);
  text-wrap: balance;
}
.kb-feat__title .serif-i { letter-spacing: 0; color: var(--signal-deep); margin-inline: 0.04em; }
.kb-feat__lede {
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 54ch;
}

.kb-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}
.kb-item {
  display: grid;
  grid-template-columns: 60px 1fr auto;
  gap: 20px;
  align-items: center;
  padding-block: 22px;
  border-bottom: 1px solid var(--line);
  transition: background-color var(--dur-300) var(--ease);
}
.kb-item:hover { background: var(--bg); }
.kb-item:hover .kb-item__arrow { transform: translateX(6px); color: var(--signal-deep); }
.kb-item__id {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.kb-item__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: 18px;
  color: var(--ink);
  letter-spacing: -0.012em;
  line-height: 1.3;
}
.kb-item__meta {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: block;
  margin-top: 4px;
}
.kb-item__arrow {
  width: 16px; height: 16px;
  stroke: var(--ink-3);
  stroke-width: 1.5;
  fill: none;
  transition: transform var(--dur-300) var(--ease), color var(--dur-300) var(--ease);
}

/* ═══════════════════════════════════════════════════════════════════════
   07 — TEMAS (Final CTA + footer block)
   ═══════════════════════════════════════════════════════════════════════ */
.cta-sec {
  background: var(--bg-deep);
  color: var(--ink-bone);
  position: relative;
  overflow: hidden;
  padding-block: clamp(120px, 14vw, 232px);
}
.cta-sec__back {
  position: absolute;
  left: var(--container-padding);
  right: var(--container-padding);
  bottom: -0.18em;
  font-family: var(--ff-display);
  font-weight: 700;
  font-size: clamp(160px, 30vw, 540px);
  letter-spacing: -0.06em;
  line-height: 0.8;
  color: transparent;
  -webkit-text-stroke: 1px oklch(0.55 0.012 60 / 0.32);
  text-stroke: 1px oklch(0.55 0.012 60 / 0.32);
  pointer-events: none;
  white-space: nowrap;
  z-index: 1;
}
.cta-sec__grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
  align-items: end;
}
@media (min-width: 1000px) {
  .cta-sec__grid { grid-template-columns: 1fr auto; gap: 96px; }
}
.cta-sec__head {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(56px, 9.5vw, 168px);
  line-height: 0.92;
  letter-spacing: -0.04em;
  color: var(--ink-bone);
  text-wrap: balance;
  max-width: 14ch;
}
.cta-sec__head .serif-i {
  letter-spacing: 0;
  color: oklch(0.96 0.020 60);
  margin-inline: 0.04em;
}
.cta-sec__head .signal { color: var(--signal); }
.cta-sec__contact {
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: oklch(0.78 0.010 65);
  min-width: 280px;
}
.cta-sec__contact-row {
  display: grid;
  grid-template-columns: 70px 1fr;
  gap: 14px;
  align-items: center;
  padding-block: 12px;
  border-bottom: 1px solid var(--line-dark);
}
.cta-sec__contact-row strong {
  color: var(--ink-bone);
  font-weight: 500;
  letter-spacing: 0.06em;
}
.cta-sec__cta-row {
  display: flex;
  gap: 14px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.cta-sec__cta-row .btn--primary--signal {
  background: var(--signal);
  border-color: var(--signal);
}
.cta-sec__line {
  position: absolute;
  left: var(--container-padding);
  right: var(--container-padding);
  top: 0;
  height: 1px;
  background: var(--line-dark);
}

/* ═══════════════════════════════════════════════════════════════════════
   02 — YAKLAŞIM (Approach · 3 principles, editorial 3-col)
   ═══════════════════════════════════════════════════════════════════════ */
.app-sec {
  background: var(--bg);
  color: var(--ink);
  border-top: 1px solid var(--line);
}
.app-sec__intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-bottom: clamp(56px, 7vw, 96px);
  padding-bottom: clamp(40px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
}
@media (min-width: 1000px) {
  .app-sec__intro {
    grid-template-columns: 1fr 1.6fr;
    gap: 96px;
    align-items: end;
  }
}
.app-sec__intro-id {
  font-family: var(--ff-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}
.app-sec__intro-id strong { color: var(--ink); font-weight: 500; }
.app-sec__intro-head {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(34px, 4.2vw, 60px);
  line-height: 1.06;
  letter-spacing: -0.028em;
  color: var(--ink);
  text-wrap: balance;
  max-width: 22ch;
}
.app-sec__intro-head .serif-i {
  color: var(--signal-deep);
  letter-spacing: 0;
  margin-inline: 0.04em;
}

.app-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}
@media (min-width: 900px) {
  .app-sec__grid { grid-template-columns: repeat(3, 1fr); gap: 32px 48px; }
}
.app-prin {
  display: flex;
  flex-direction: column;
  gap: 18px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.app-prin__num {
  font-family: var(--ff-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink-3);
}
.app-prin__num strong { color: var(--signal); font-weight: 500; }
.app-prin__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(22px, 1.9vw, 28px);
  line-height: 1.15;
  letter-spacing: -0.018em;
  color: var(--ink);
  text-wrap: balance;
}
.app-prin__title .serif-i { color: var(--signal-deep); letter-spacing: 0; }
.app-prin__desc {
  font-size: 15px;
  line-height: 1.62;
  color: var(--ink-2);
  max-width: 38ch;
}
.app-prin__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}
.app-prin__tags li {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding: 5px 8px;
  background: var(--bg-2);
  border-radius: var(--r-chip);
}

/* ═══════════════════════════════════════════════════════════════════════
   04 — SÜREÇ (Process · 5-phase methodology)
   ═══════════════════════════════════════════════════════════════════════ */
.proc-sec {
  background: var(--bg);
  color: var(--ink);
  border-top: 1px solid var(--line);
}
.proc-sec__phases {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
}
.proc-phase {
  display: grid;
  grid-template-columns: 100px 1.4fr 2fr auto;
  gap: 32px;
  align-items: start;
  padding: clamp(36px, 4.5vw, 56px) clamp(28px, 3vw, 48px);
  border-bottom: 1px solid var(--line);
  position: relative;
  transition: color var(--dur-500) var(--ease);
}
@media (max-width: 900px) {
  .proc-phase {
    grid-template-columns: 60px 1fr;
    gap: 16px 20px;
    padding: clamp(28px, 3.6vw, 36px) clamp(20px, 3vw, 28px);
  }
  .proc-phase__desc { grid-column: 2; }
  .proc-phase__meta { grid-column: 1 / -1; padding-left: 80px; }
}
/* Hover bg — soft smoke fade on left/right edges via mask gradient */
.proc-phase::before {
  content: "";
  position: absolute;
  inset: 6px 0;
  background: var(--bg-2);
  opacity: 0;
  transition: opacity var(--dur-500) var(--ease);
  z-index: 0;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(90deg,
    transparent 0%,
    rgba(0,0,0,0.4) 4%,
    black 10%,
    black 90%,
    rgba(0,0,0,0.4) 96%,
    transparent 100%);
          mask-image: linear-gradient(90deg,
    transparent 0%,
    rgba(0,0,0,0.4) 4%,
    black 10%,
    black 90%,
    rgba(0,0,0,0.4) 96%,
    transparent 100%);
}
.proc-phase > * { position: relative; z-index: 2; }
.proc-phase:hover::before { opacity: 1; }
.proc-phase:hover .proc-phase__num strong { color: var(--signal); }

.proc-phase__num {
  font-family: var(--ff-mono);
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--ink);
  line-height: 1;
  font-feature-settings: "tnum";
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.proc-phase__num strong {
  font-weight: 500;
  color: var(--ink);
  transition: color var(--dur-500) var(--ease);
  font-size: 1em;
}
.proc-phase__num span {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-transform: uppercase;
}

.proc-phase__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(22px, 2vw, 30px);
  letter-spacing: -0.02em;
  line-height: 1.15;
  color: var(--ink);
  text-wrap: balance;
}
.proc-phase__title .serif-i { letter-spacing: 0; color: var(--signal-deep); margin-inline: 0.04em; }
.proc-phase__desc {
  font-size: 15px;
  line-height: 1.62;
  color: var(--ink-2);
  max-width: 56ch;
}
.proc-phase__meta {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 6px;
}
.proc-phase__meta strong { color: var(--ink); font-weight: 500; }
@media (max-width: 900px) {
  .proc-phase__meta { text-align: left; }
}

/* ═══════════════════════════════════════════════════════════════════════
   06 — STANDARTLAR (Compliance · editorial grid)
   ═══════════════════════════════════════════════════════════════════════ */
.std-sec {
  background: var(--bg-2);
  color: var(--ink);
  position: relative;
}
.std-sec__intro {
  max-width: 64ch;
  margin-top: -16px;
  margin-bottom: 48px;
  color: var(--ink-2);
  font-size: 17px;
  line-height: 1.62;
}
.std-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (min-width: 700px) { .std-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .std-grid { grid-template-columns: 1fr 1fr 1fr; } }
.std-cell {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(24px, 3vw, 36px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--bg-2);
  transition: background-color var(--dur-500) var(--ease);
  min-height: 200px;
  justify-content: space-between;
}
.std-cell:hover { background: var(--bg); }
.std-cell:hover .std-cell__title { color: var(--signal-deep); }

.std-cell__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}
.std-cell__code {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.std-cell__code strong { color: var(--signal); font-weight: 500; }
.std-cell__region {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-transform: uppercase;
  padding: 4px 8px;
  background: var(--bg-3);
  border-radius: var(--r-chip);
}
.std-cell__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(20px, 1.7vw, 24px);
  letter-spacing: -0.015em;
  line-height: 1.2;
  color: var(--ink);
  transition: color var(--dur-500) var(--ease);
  text-wrap: balance;
}
.std-cell__desc {
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 36ch;
}

/* ═══════════════════════════════════════════════════════════════════════
   08 — SEKTÖRLER (Industries · oversized type list)
   ═══════════════════════════════════════════════════════════════════════ */
.sec-sec {
  background: var(--bg-deep);
  color: var(--ink-bone);
  position: relative;
  overflow: hidden;
}
.sec-sec .sec-head__title { color: var(--ink-bone); }
.sec-sec .sec-head__id { border-top-color: var(--line-dark); color: var(--ink-3); }
.sec-sec .sec-head__id-num { color: var(--ink-bone); }

.sec-sec__list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line-dark);
}
.sec-row {
  display: grid;
  grid-template-columns: 100px 1fr auto auto;
  gap: 32px;
  align-items: center;
  padding: clamp(20px, 2.4vw, 32px) clamp(28px, 3vw, 48px);
  border-bottom: 1px solid var(--line-dark);
  position: relative;
  transition: padding var(--dur-500) var(--ease);
  cursor: none;
}
@media (max-width: 800px) {
  .sec-row {
    grid-template-columns: 56px 1fr auto;
    gap: 16px;
    padding: clamp(16px, 2.4vw, 22px) clamp(20px, 3vw, 28px);
  }
  .sec-row__count { display: none; }
}
.sec-row:hover {
  padding-top: clamp(26px, 3vw, 40px);
  padding-bottom: clamp(26px, 3vw, 40px);
}
.sec-row:hover .sec-row__name { color: var(--signal); }
.sec-row:hover .sec-row__arrow { transform: translateX(8px); color: var(--signal); }

.sec-row__id {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.sec-row__name {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(28px, 4vw, 64px);
  line-height: 1;
  letter-spacing: -0.028em;
  color: var(--ink-bone);
  transition: color var(--dur-500) var(--ease);
}
.sec-row__name .serif-i { letter-spacing: 0; color: oklch(0.94 0.030 60); }
.sec-row__count {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-3);
  text-transform: uppercase;
}
.sec-row__count strong { color: var(--ink-bone); font-weight: 500; }
.sec-row__arrow {
  width: 22px;
  height: 22px;
  stroke: var(--ink-3);
  stroke-width: 1.4;
  fill: none;
  transition: transform var(--dur-500) var(--ease),
              color var(--dur-500) var(--ease);
}

/* Optional decorative caption beneath list */
.sec-sec__foot {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: end;
  margin-top: 56px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.sec-sec__foot strong { color: var(--ink-bone); font-weight: 500; }

/* Per-row inline ghost preview — image bleeds into row, smoke fades both sides */
.sec-row {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}
.sec-row > * { position: relative; z-index: 2; }

.sec-row__preview {
  position: absolute;
  top: 8px;
  right: clamp(28px, 3vw, 48px);
  bottom: 8px;
  width: 52%;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transform: translateX(24px) scale(1.04);
  transition:
    opacity 0.7s var(--ease),
    transform 0.9s var(--ease);
  -webkit-mask-image: linear-gradient(90deg,
    transparent 0%,
    rgba(0,0,0,0.4) 12%,
    black 28%,
    black 78%,
    transparent 100%);
          mask-image: linear-gradient(90deg,
    transparent 0%,
    rgba(0,0,0,0.4) 12%,
    black 28%,
    black 78%,
    transparent 100%);
  will-change: opacity, transform;
}
.sec-row__preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  filter: brightness(0.85) saturate(0.92);
  display: block;
}
.sec-row__preview::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    oklch(0.135 0.006 60 / 0.18) 0%,
    oklch(0.135 0.006 60 / 0) 50%,
    oklch(0.135 0.006 60 / 0.42) 100%);
  pointer-events: none;
}

.sec-row:hover .sec-row__preview {
  opacity: 0.95;
  transform: translateX(0) scale(1);
}

/* Mobile: hide ghost preview (rows are too narrow) */
@media (max-width: 800px) {
  .sec-row__preview { display: none; }
}

/* ═══════════════════════════════════════════════════════════════════════
   09 — SÖZ (Banner card · contained, ~ 540px height inside container)
   ═══════════════════════════════════════════════════════════════════════ */
.quo-sec {
  background: var(--bg);
  color: var(--ink);
  padding-block: var(--section-y);
  position: relative;
}

/* The banner card itself — self-contained, image bg, rounded, padded */
.quo-card {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-radius: var(--r-md);
  background: var(--bg-deep);
  color: var(--ink-bone);
  min-height: clamp(420px, 52vh, 580px);
  padding: clamp(40px, 5vw, 72px);
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: clamp(28px, 3.5vw, 56px);
}

/* Bg image */
.quo-card__media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}
.quo-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 50%;
  transform: scale(1.05);
  transition: transform 1.6s var(--ease);
  will-change: transform;
}
.quo-card:hover .quo-card__media img { transform: scale(1.08); }
.quo-card__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg,
      oklch(0.135 0.006 60 / 0.42) 0%,
      oklch(0.135 0.006 60 / 0.60) 50%,
      oklch(0.135 0.006 60 / 0.90) 100%),
    linear-gradient(90deg,
      oklch(0.135 0.006 60 / 0.35) 0%,
      oklch(0.135 0.006 60 / 0.05) 60%);
  z-index: 1;
}

/* Children always above the media */
.quo-card > * { position: relative; z-index: 2; }

/* Top row: ID + decorative quote mark right side */
.quo-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}
.quo-card__id {
  font-family: var(--ff-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 4px;
}
.quo-card__id strong { color: var(--ink-bone); font-weight: 500; }
.quo-card__mark {
  font-family: var(--ff-serif);
  font-style: italic;
  font-weight: 400;
  font-size: clamp(96px, 11vw, 168px);
  line-height: 0.74;
  letter-spacing: -0.04em;
  color: var(--signal);
  pointer-events: none;
  user-select: none;
  margin: -8px -4px 0 0;
  text-shadow: 0 8px 32px oklch(0.135 0.006 60 / 0.5);
}

/* Quote body */
.quo-card__body {
  align-self: center;
  max-width: 920px;
}
.quo-card__text {
  font-family: var(--ff-display);
  font-weight: 400;
  font-size: clamp(22px, 2.4vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.022em;
  color: var(--ink-bone);
  text-wrap: balance;
  text-shadow: 0 2px 18px oklch(0.135 0.006 60 / 0.45);
  margin: 0;
}
.quo-card__text .serif-i {
  letter-spacing: 0;
  color: oklch(0.96 0.020 60);
  margin-inline: 0.04em;
}
.quo-card__text em {
  font-family: var(--ff-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--signal);
  letter-spacing: 0;
}

/* Attribution row */
.quo-card__attr {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px 24px;
  padding-top: clamp(20px, 2.4vw, 32px);
  border-top: 1px solid oklch(0.55 0.012 60 / 0.45);
  align-items: end;
}
@media (max-width: 700px) {
  .quo-card__attr { grid-template-columns: 1fr; }
}
.quo-card__attr-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.quo-card__attr-name {
  font-family: var(--ff-display);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.012em;
  color: var(--ink-bone);
}
.quo-card__attr-role {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.quo-card__attr-meta {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  text-align: right;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.quo-card__attr-meta strong { color: var(--ink-bone); font-weight: 500; }
@media (max-width: 700px) {
  .quo-card__attr-meta { text-align: left; }
}

/* ═══════════════════════════════════════════════════════════════════════
   11 — SERTİFİKALAR (Affiliations)
   ═══════════════════════════════════════════════════════════════════════ */
.cert-sec {
  background: var(--bg);
  color: var(--ink);
  border-top: 1px solid var(--line);
}
.cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  border-top: 1px solid var(--line);
}
@media (min-width: 700px) { .cert-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .cert-grid { grid-template-columns: 1fr 1fr 1fr 1fr; } }

.cert-cell {
  padding: clamp(28px, 3vw, 40px) clamp(20px, 2vw, 28px);
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-height: 220px;
  transition: background-color var(--dur-500) var(--ease);
}
@media (min-width: 700px) {
  .cert-cell:nth-child(2n) { border-right: 0; }
}
@media (min-width: 1100px) {
  .cert-cell:nth-child(2n) { border-right: 1px solid var(--line); }
  .cert-cell:nth-child(4n) { border-right: 0; }
}
.cert-cell:hover { background: var(--bg-2); }

.cert-cell__id {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  align-items: center;
  gap: 10px;
}
.cert-cell__id strong { color: var(--signal); font-weight: 500; }

.cert-cell__mark {
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: clamp(28px, 2.6vw, 36px);
  line-height: 1;
  letter-spacing: -0.025em;
  color: var(--ink);
  margin-top: auto;
}
.cert-cell__mark .serif-i { color: var(--signal-deep); letter-spacing: 0; }

.cert-cell__name {
  font-family: var(--ff-display);
  font-size: 14px;
  font-weight: 500;
  color: var(--ink);
  letter-spacing: -0.005em;
  line-height: 1.3;
}
.cert-cell__meta {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}
.cert-cell__meta strong { color: var(--ink); font-weight: 500; }

/* ═══════════════════════════════════════════════════════════════════════
   12 — SSS (FAQ accordion)
   ═══════════════════════════════════════════════════════════════════════ */
.faq-sec {
  background: var(--bg-2);
  color: var(--ink);
}
.faq-sec__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 56px;
}
@media (min-width: 1000px) {
  .faq-sec__grid { grid-template-columns: 1fr 1.6fr; gap: 96px; }
}
.faq-aside {
  position: sticky;
  top: 120px;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}
.faq-aside__id {
  font-family: var(--ff-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink-3);
}
.faq-aside__id strong { color: var(--ink); font-weight: 500; }
.faq-aside__head {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(28px, 3vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.022em;
  color: var(--ink);
  text-wrap: balance;
  max-width: 18ch;
}
.faq-aside__head .serif-i { color: var(--signal-deep); letter-spacing: 0; }
.faq-aside__lede {
  font-size: 15px;
  line-height: 1.62;
  color: var(--ink-2);
  max-width: 38ch;
  margin-top: 6px;
}
.faq-aside__cta {
  margin-top: 18px;
}

.faq-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--line);
}
.faq-item {
  border-bottom: 1px solid var(--line);
}
.faq-item__head {
  width: 100%;
  display: grid;
  grid-template-columns: 56px 1fr 32px;
  gap: 20px;
  align-items: center;
  padding-block: 22px;
  text-align: left;
  cursor: none;
  transition: background-color var(--dur-300) var(--ease);
}
.faq-item__head:hover { background: var(--bg); }
.faq-item__head:hover .faq-item__q { color: var(--signal-deep); }
.faq-item__id {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.faq-item__q {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(18px, 1.5vw, 22px);
  letter-spacing: -0.015em;
  color: var(--ink);
  line-height: 1.3;
  transition: color var(--dur-300) var(--ease);
  text-wrap: balance;
}
.faq-item__q .serif-i { color: var(--signal-deep); letter-spacing: 0; }
.faq-item__icon {
  width: 18px;
  height: 18px;
  position: relative;
  justify-self: end;
}
.faq-item__icon::before,
.faq-item__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: 14px;
  height: 1px;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform var(--dur-500) var(--ease),
              background-color var(--dur-500) var(--ease);
}
.faq-item__icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item[aria-expanded="true"] .faq-item__icon::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-item[aria-expanded="true"] .faq-item__icon::before { background: var(--signal); }
.faq-item[aria-expanded="true"] .faq-item__icon::after { background: var(--signal); }
.faq-item[aria-expanded="true"] .faq-item__q { color: var(--signal-deep); }

.faq-item__body {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.5s var(--ease);
}
.faq-item[aria-expanded="true"] .faq-item__body {
  grid-template-rows: 1fr;
}
.faq-item__body-inner {
  overflow: hidden;
}
.faq-item__a {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding-block: 0 28px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-2);
  max-width: 64ch;
}
.faq-item__a > span:first-child {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 4px;
}
.faq-item__a > span:first-child::before {
  content: "—";
  margin-right: 6px;
  color: var(--signal);
}

/* ═══════════════════════════════════════════════════════════════════════
   Reveal helpers (intersection-observed)
   ═══════════════════════════════════════════════════════════════════════ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-900) var(--ease),
              transform var(--dur-900) var(--ease);
}
.reveal.is-in {
  opacity: 1;
  transform: translateY(0);
}
.reveal--delay-1 { transition-delay: 80ms; }
.reveal--delay-2 { transition-delay: 160ms; }
.reveal--delay-3 { transition-delay: 240ms; }

/* Mask reveal helper (project images) */
.mask-rev {
  position: relative;
}
.mask-rev::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--bg);
  transform-origin: top;
  transform: scaleY(1);
  transition: transform 1.1s var(--ease);
  z-index: 2;
  pointer-events: none;
}
.mask-rev.is-in::after { transform: scaleY(0); }

/* ═══════════════════════════════════════════════════════════════════════
   v4 — YALINLAŞTIRMA (IA sadeleştirme · logo-mavisi accent)
   Override katmanı: kompakt projeler grid, sektör çipleri, birleşik
   beat sub-header'ları, sıkıştırılmış güven şeridi, derli toplu footer.
   ═══════════════════════════════════════════════════════════════════════ */

/* ── 02 · Yaklaşım & Süreç — Süreç birleşik beat ───────────────────────── */
.proc-sec--joined { padding-top: 0; }
.proc-sec__sub {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 8px 18px;
  padding-top: clamp(28px, 3vw, 44px);
  margin-bottom: clamp(28px, 3vw, 40px);
  border-top: 1px solid var(--line);
}
.proc-sec__sub-id {
  font-family: var(--ff-mono); font-size: var(--fs-hud);
  letter-spacing: var(--tracking-eyebrow); text-transform: uppercase;
  color: var(--ink-3); flex: 0 0 auto;
}
.proc-sec__sub-head {
  font-family: var(--ff-display); font-weight: 500;
  font-size: clamp(20px, 2.2vw, 28px); letter-spacing: -0.02em;
  line-height: 1.2; color: var(--ink);
}
.proc-sec__sub-head .serif-i { color: var(--signal-deep); letter-spacing: 0; }

/* ── 05 · Standartlar & Sertifikalar — kompakt güven şeridi ────────────── */
.std-cell { padding: 18px 18px 20px; }
.std-cell__desc { display: none; }            /* şerit: kod + başlık yeter */
.std-cell__title { font-size: 15px; }
.cert-sec--joined { padding-top: 0; }
.cert-sec__sub {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 6px 16px;
  padding-top: clamp(28px, 3vw, 40px); margin-bottom: 28px;
  border-top: 1px solid var(--line);
}
.cert-sec__sub-id {
  font-family: var(--ff-mono); font-size: var(--fs-hud);
  letter-spacing: var(--tracking-eyebrow); text-transform: uppercase;
  color: var(--ink);
}
.cert-sec__sub-meta {
  font-family: var(--ff-mono); font-size: var(--fs-hud);
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3);
}
.cert-grid { gap: 10px; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.cert-cell { padding: 14px 16px; gap: 10px; }
.cert-cell__meta { display: none; }            /* şerit: kart başlığı yeter */
.cert-cell__name { font-size: 12px; }

/* ── 06 · Projeler — sektör çipleri + kompakt model grid ───────────────── */
.models-sec__sectors {
  display: flex; flex-wrap: wrap; align-items: center; gap: 8px;
  margin-bottom: clamp(32px, 3.5vw, 48px);
  padding-bottom: clamp(24px, 3vw, 36px);
  border-bottom: 1px solid var(--line);
}
.models-sec__sectors-label {
  font-family: var(--ff-mono); font-size: var(--fs-hud);
  letter-spacing: var(--tracking-eyebrow); text-transform: uppercase;
  color: var(--ink-3); margin-right: 6px;
}
.sector-chip {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 6px 11px; border: 1px solid var(--line);
  border-radius: var(--r-chip);
  font-family: var(--ff-display); font-size: 13px; color: var(--ink-2);
  letter-spacing: -0.005em;
  transition: border-color var(--dur-300) var(--ease), color var(--dur-300) var(--ease);
}
.sector-chip strong {
  font-family: var(--ff-mono); font-size: 11px; font-weight: 500;
  letter-spacing: 0.06em; color: var(--signal);
}
.sector-chip:hover { border-color: var(--ink); color: var(--ink); }

.models-sec__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 20px; }
@media (min-width: 720px)  { .models-sec__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (min-width: 1080px) { .models-sec__grid { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px 20px; } }
.model-card { gap: 12px; }
.model-card__hud { display: none; }            /* minimalist kart: poster + ad + link */
.model-card__title { font-size: 15px; line-height: 1.25; }
.model-card__meta { gap: 6px 12px; }
.model-card__open { font-size: 10px; }
.model-card__load-ring { width: 46px; height: 46px; }
.model-card__load-ring svg { width: 16px; height: 16px; }
.model-card__load-label { font-size: 10px; letter-spacing: 0.14em; }
.model-card__tag { font-size: 9px; }

/* ── Sistemler (04) — biraz daha yoğun ─────────────────────────────────── */
.sys-stack { gap: clamp(48px, 6vw, 88px); }
.sys-sec__intro { max-width: 60ch; }

/* ── Footer — 3 kolon, derli toplu ─────────────────────────────────────── */
@media (min-width: 800px) {
  .site-foot__grid { grid-template-columns: 1.6fr 1fr 1fr; gap: 48px; }
}
.site-foot__dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--signal); display: inline-block;
}

/* ═══════════════════════════════════════════════════════════════════════
   v5 — HERO SLIDER (3 slide · crossfade + Ken Burns parallax + body rise)
   Self-contained per-slide gradient; global .hero-sec::before devre dışı.
   Premium geçiş: opacity crossfade + içerik gecikmeli yükseliş + yavaş zoom.
   ═══════════════════════════════════════════════════════════════════════ */
.hero-sec::before { display: none; }              /* per-slide gradient devralır */

.hero-slider__track {
  position: relative;
  grid-row: 1;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur-900) var(--ease),
              visibility 0s linear var(--dur-900);
}
.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  transition: opacity var(--dur-900) var(--ease);
}

.hero-slide__media { position: absolute; inset: 0; overflow: hidden; z-index: 0; }
.hero-slide__media img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center 58%;
  transform: scale(1.05);
  transition: transform 7200ms var(--ease);
  will-change: transform;
}
.hero-slide.is-active .hero-slide__media img { transform: scale(1.12); }
.hero-slide__media::after {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg,
    oklch(0.135 0.006 60 / 0.58) 0%,
    oklch(0.135 0.006 60 / 0.20) 38%,
    oklch(0.135 0.006 60 / 0.52) 74%,
    oklch(0.135 0.006 60 / 0.94) 100%);
}

/* Reuse hero body inside each slide; add a delayed content rise */
.hero-slide .hero-sec__body {
  position: relative; z-index: 2;
  align-self: stretch;
  transform: translateY(24px);
  opacity: 0;
  transition: transform var(--dur-900) var(--ease),
              opacity var(--dur-900) var(--ease);
}
.hero-slide.is-active .hero-sec__body {
  transform: none; opacity: 1;
  transition-delay: 0.16s;
}
.hero-sec__meta--simple { grid-template-columns: minmax(0, 1fr); }
.hero-sec__meta--simple .hero-sec__lede { max-width: min(60ch, 100%); }

/* ── Slider controls ───────────────────────────────────────────────────── */
.hero-slider__nav {
  position: absolute;
  z-index: 5;
  right: var(--container-padding);
  bottom: clamp(132px, 17vh, 196px);
  display: flex;
  align-items: center;
  gap: 14px;
}
.hero-slider__arrow {
  width: 44px; height: 44px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid oklch(0.78 0.010 65 / 0.45);
  border-radius: var(--r-md);
  background: oklch(0.135 0.006 60 / 0.35);
  color: var(--ink-bone);
  -webkit-backdrop-filter: none; backdrop-filter: none;
  transition: border-color var(--dur-300) var(--ease),
              background-color var(--dur-300) var(--ease),
              transform var(--dur-300) var(--ease);
}
.hero-slider__arrow svg { width: 16px; height: 16px; stroke: currentColor; stroke-width: 1.6; fill: none; }
.hero-slider__arrow:hover {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--ink-on-signal);
  transform: translateY(-2px);
}
.hero-slider__dots { display: inline-flex; align-items: center; gap: 8px; }
.hero-slider__dot {
  width: 26px; height: 26px; padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  background: none; border: 0; cursor: pointer;
}
.hero-slider__dot i {
  display: block; width: 8px; height: 8px; border-radius: 50%;
  background: oklch(0.78 0.010 65 / 0.5);
  transition: background-color var(--dur-300) var(--ease),
              width var(--dur-300) var(--ease);
}
.hero-slider__dot.is-active i {
  background: var(--signal);
  width: 22px; border-radius: 4px;
}
.hero-slider__dot:hover i { background: var(--ink-bone); }

@media (max-width: 720px) {
  .hero-slider__nav { right: 50%; transform: translateX(50%); bottom: clamp(108px, 14vh, 150px); gap: 10px; }
  .hero-slider__arrow { width: 40px; height: 40px; }
}

/* Reduced motion: no autoplay zoom, instant crossfade, content static */
@media (prefers-reduced-motion: reduce) {
  .hero-slide, .hero-slide .hero-sec__body { transition: none; }
  .hero-slide__media img, .hero-slide.is-active .hero-slide__media img { transform: scale(1.04); transition: none; }
}

/* ── 02 · Süreç — ilerleyen bağlantı çizgisi (scroll-driven, tek easing) ── */
/* ── 02 · Süreç — node-anchor'lı timeline (rail + node + sıralı çizim) ────
   Her segment kendi node'unu bir sonraki node'a bağlar (satır yüksekliğinden
   bağımsız hizalı). Çizim + node yanması .is-anim ile koreografili. ──────── */
.proc-sec__phases {
  position: relative;
  --proc-ease: cubic-bezier(0.32, 0.72, 0, 1);
  --pad-t: clamp(36px, 4.5vw, 56px);
  --pad-l: clamp(56px, 6vw, 92px);     /* numaraya + rail'e yer aç */
  --rail-x: clamp(22px, 2.6vw, 38px);  /* rail'in dikey x'i (içerikte, gutter'da değil) */
  --node-y: calc(var(--pad-t) + 16px); /* numara hizası */
}
.proc-phase { padding: var(--pad-t) clamp(28px, 3vw, 48px) var(--pad-t) var(--pad-l); }
.proc-phase__num { position: relative; }

/* Bağlantı segmenti — bu fazın node'unu bir sonrakine bağlar */
.proc-phase::after {
  content: ""; position: absolute;
  left: var(--rail-x); margin-left: -1px;
  top: var(--node-y); width: 2px; height: 100%;
  background: linear-gradient(var(--signal), oklch(0.47 0.125 253 / 0.5));
  transform: scaleY(0); transform-origin: top;
  transition: transform 780ms var(--proc-ease);
  z-index: 1; pointer-events: none;
}
.proc-phase:last-child::after { display: none; }

/* Node noktası — her faz numarasının hizasında, rail üzerinde */
.proc-phase__num::before {
  content: ""; position: absolute;
  left: calc(var(--rail-x) - var(--pad-l)); margin-left: -6.5px; top: 16px;
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--bg); border: 2px solid var(--line);
  transform: scale(0.5); opacity: 0;
  transition: transform 440ms var(--proc-ease),
              opacity 440ms var(--proc-ease),
              background-color 440ms var(--proc-ease),
              border-color 440ms var(--proc-ease),
              box-shadow 440ms var(--proc-ease);
  z-index: 2;
}

/* .is-anim → segmentler çizilir, node'lar sırayla yanar */
.proc-sec__phases.is-anim .proc-phase::after { transform: scaleY(1); }
.proc-sec__phases.is-anim .proc-phase__num::before {
  transform: scale(1); opacity: 1;
  background: var(--signal); border-color: var(--signal);
  box-shadow: 0 0 0 5px oklch(0.47 0.125 253 / 0.14);
}
.proc-sec__phases.is-anim .proc-phase:nth-child(1) .proc-phase__num::before { transition-delay: 60ms; }
.proc-sec__phases.is-anim .proc-phase:nth-child(2) .proc-phase__num::before { transition-delay: 220ms; }
.proc-sec__phases.is-anim .proc-phase:nth-child(3) .proc-phase__num::before { transition-delay: 380ms; }
.proc-sec__phases.is-anim .proc-phase:nth-child(4) .proc-phase__num::before { transition-delay: 540ms; }
.proc-sec__phases.is-anim .proc-phase:nth-child(5) .proc-phase__num::before { transition-delay: 700ms; }
.proc-sec__phases.is-anim .proc-phase:nth-child(1)::after { transition-delay: 140ms; }
.proc-sec__phases.is-anim .proc-phase:nth-child(2)::after { transition-delay: 300ms; }
.proc-sec__phases.is-anim .proc-phase:nth-child(3)::after { transition-delay: 460ms; }
.proc-sec__phases.is-anim .proc-phase:nth-child(4)::after { transition-delay: 620ms; }

@media (max-width: 900px) {
  .proc-sec__phases {
    --pad-t: clamp(28px, 3.6vw, 36px);
    --pad-l: clamp(42px, 12vw, 58px);
    --rail-x: clamp(15px, 4.2vw, 24px);
    --node-y: calc(var(--pad-t) + 12px);
  }
  .proc-phase__num::before { top: 12px; }
  .proc-phase__meta { padding-left: 0 !important; }
}

@media (prefers-reduced-motion: reduce) {
  .proc-phase::after { transition: none; transform: scaleY(1); }
  .proc-phase__num::before {
    transition: none; transform: scale(1); opacity: 1;
    background: var(--signal); border-color: var(--signal);
  }
}

/* ═══════════════════════════════════════════════════════════════════════
   v6 — SİSTEMLER minimal (içerik korunur, sunum hafifler)
   Daha kısa medya · hafif spec satırı (kutu yok) · daha çok boşluk.
   ═══════════════════════════════════════════════════════════════════════ */
.sys-stack { gap: 0; }                                  /* v4 ekstra gap geri alındı */
.sys-card { padding-block: clamp(40px, 5vw, 76px); gap: 28px; }
@media (min-width: 1000px) { .sys-card { gap: 56px; align-items: center; } }
.sys-card--portrait .sys-card__media { aspect-ratio: 4 / 3; }   /* uzun portreyi kıs */
.sys-card__copy { font-size: 15px; line-height: 1.6; max-width: 48ch; color: oklch(0.80 0.010 65); }
/* props: kutulu grid → hafif, sınırsız spec satırı */
.sys-card__props {
  border-top: 1px solid oklch(0.30 0.010 60 / 0.6);
  padding-top: 18px; margin-top: 14px;
  gap: 14px 28px;
}
.sys-card__prop dt { font-size: 10px; margin-bottom: 3px; }
.sys-card__prop dd { font-size: 15px; }
.sys-card__num { opacity: 0.92; }

/* ═══════════════════════════════════════════════════════════════════════
   v8 — HERO LANDING refinement (premium · mühendislik-ciddiyeti)
   · Navbar clearance + başlık taşma fix · mavi buton sistemi (keskin köşe)
   · staggered slide-in geçiş (eyebrow→başlık→lede→cta) · tek cubic-bezier
   ═══════════════════════════════════════════════════════════════════════ */
.hero-slider { --hero-ease: cubic-bezier(0.32, 0.72, 0, 1); }

/* 1 · Layout — içerik navbar'ın altından başlar, başlık taşmaz */
.hero-slide {
  justify-content: flex-end;
  padding-top: clamp(104px, 14vh, 168px);   /* floating navbar + güvenli boşluk */
}
.hero-slide .hero-sec__body {
  padding-bottom: clamp(40px, 5vw, 76px);
  gap: clamp(20px, 2.4vw, 34px);
  max-width: var(--container-max);
}
.hero-sec__title {
  font-size: clamp(38px, 5.2vw, 80px);
  line-height: 1.04;
  letter-spacing: -0.035em;
  max-width: 17ch;
  overflow-wrap: break-word;
  hyphens: auto;
}
.hero-sec__lede { font-size: clamp(15px, 1.15vw, 16.5px); line-height: 1.58; max-width: 50ch; }
.hero-sec__eyebrow { opacity: 0.92; }

/* 2 · Buton sistemi — logo mavisi, keskin köşe (4px), net hiyerarşi */
.hero-sec__cta-row { gap: 14px; margin-top: 4px; }
.hero-sec__cta-row .btn {
  border-radius: 4px;
  padding: 15px 22px;
  font-size: 14px;
  letter-spacing: -0.005em;
}
.hero-sec__cta-row .btn--primary {
  background: var(--signal);
  color: var(--ink-on-signal);
  border: 1px solid var(--signal);
  box-shadow: inset 0 1px 0 oklch(1 0 0 / 0.12);
}
.hero-sec__cta-row .btn--primary:hover {
  background: var(--signal-deep);
  border-color: var(--signal-deep);
  color: var(--ink-on-signal);
  transform: translateY(-2px);
}
.hero-sec__cta-row .btn--ghost {
  background: oklch(0.96 0.005 70 / 0.06);
  color: var(--ink-bone);
  border: 1px solid oklch(0.80 0.010 70 / 0.45);
}
.hero-sec__cta-row .btn--ghost:hover {
  background: oklch(0.96 0.005 70 / 0.12);
  border-color: var(--ink-bone);
  transform: translateY(-2px);
}
.hero-sec__cta-row .btn__arrow { width: 14px; height: 14px; }

/* 3 · Geçiş — staggered içerik (blok yükselişi yerine kademeli) */
.hero-slide .hero-sec__body { transform: none; opacity: 1; transition: none; }
.hero-slide .hero-sec__body > * {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.9s var(--hero-ease), transform 0.9s var(--hero-ease);
}
.hero-slide.is-active .hero-sec__body > * { opacity: 1; transform: none; }
.hero-slide.is-active .hero-sec__body > *:nth-child(1) { transition-delay: 0.22s; }
.hero-slide.is-active .hero-sec__body > *:nth-child(2) { transition-delay: 0.34s; }
.hero-slide.is-active .hero-sec__body > *:nth-child(3) { transition-delay: 0.46s; }
.hero-slide.is-active .hero-sec__body > *:nth-child(4) { transition-delay: 0.58s; }
/* crossfade + Ken Burns biraz daha sinematik */
.hero-slide { transition: opacity 1100ms var(--hero-ease), visibility 0s linear 1100ms; }
.hero-slide.is-active { transition: opacity 1100ms var(--hero-ease); }
.hero-slide__media img { transition: transform 8000ms var(--hero-ease); transform: scale(1.06); }
.hero-slide.is-active .hero-slide__media img { transform: scale(1.14); }

/* 4 · prefers-reduced-motion — statik, taşmasız */
@media (prefers-reduced-motion: reduce) {
  .hero-slide .hero-sec__body > * { opacity: 1; transform: none; transition: none; }
  .hero-slide__media img, .hero-slide.is-active .hero-slide__media img { transform: scale(1.04); transition: none; }
}
@media (max-width: 720px) {
  .hero-slide { padding-top: clamp(88px, 16vh, 120px); }
  .hero-sec__title { font-size: clamp(34px, 8.8vw, 52px); max-width: 18ch; }
  .hero-sec__cta-row .btn { padding: 13px 18px; }
}

/* ═══════════════════════════════════════════════════════════════════════
   v9 — Slider nav cluster · Disiplinler (assetli/sıkı) · kompakt footer
   ═══════════════════════════════════════════════════════════════════════ */

/* 1 · Slider nav — premium cluster: sayaç + ince progress + minimal oklar */
.hero-slider__nav {
  right: var(--container-padding);
  bottom: clamp(128px, 16.5vh, 188px);
  display: flex;
  align-items: center;
  gap: 18px;
}
.hero-slider__count {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: oklch(0.72 0.010 65);
  font-feature-settings: "tnum";
  display: inline-flex; align-items: baseline; gap: 5px;
}
.hero-slider__count b { color: var(--ink-bone); font-weight: 500; font-size: 14px; }
.hero-slider__count-sep { color: oklch(0.60 0.012 60); }
.hero-slider__progress {
  position: relative;
  width: clamp(56px, 7vw, 96px); height: 2px;
  background: oklch(0.80 0.010 70 / 0.22);
  overflow: hidden;
}
.hero-slider__progress i {
  position: absolute; inset: 0;
  background: var(--signal);
  transform: scaleX(0); transform-origin: left;
}
.hero-slider__arrows { display: inline-flex; gap: 6px; }
.hero-slider__nav .hero-slider__arrow {
  width: 40px; height: 40px;
  border: 1px solid oklch(0.80 0.010 70 / 0.30);
  border-radius: 4px;
  background: transparent;
  color: var(--ink-bone);
}
.hero-slider__nav .hero-slider__arrow:hover {
  border-color: var(--signal);
  background: var(--signal);
  color: var(--ink-on-signal);
  transform: none;
}
.hero-slider__dots { display: none; }      /* sayaç + progress konum gösterir */
@media (max-width: 720px) {
  .hero-slider__nav { right: 50%; transform: translateX(50%); bottom: clamp(104px, 13vh, 140px); gap: 12px; }
  .hero-slider__progress { width: 48px; }
  .hero-slider__nav .hero-slider__arrow { width: 38px; height: 38px; }
}

/* 2 · Disiplinler — ikonlu, sıkı, dengeli grid */
.cap-row {
  grid-template-columns: auto minmax(0, 1.4fr) minmax(0, 1.9fr) auto;
  gap: 24px 40px;
  padding: clamp(22px, 2.8vw, 36px) clamp(20px, 2.4vw, 36px);
  align-items: center;
}
.cap-row__marker {
  display: flex; flex-direction: column; gap: 16px; align-items: flex-start;
  padding-top: 0;
}
.cap-row__icon {
  width: 64px; height: 64px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  color: var(--ink-2);
  background: var(--bg-2);
  transition: color var(--dur-300) var(--ease),
              border-color var(--dur-300) var(--ease),
              background-color var(--dur-300) var(--ease);
  position: relative;
}
.cap-row__icon::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -10px;
  width: 1px; height: 8px;
  background: var(--line);
  transform: translateX(-50%);
}
.cap-row__icon svg { width: 32px; height: 32px; }
.cap-row:hover .cap-row__icon { color: var(--signal); border-color: var(--signal); background: var(--bg); }
.cap-row__id { padding-top: 0; }
.cap-row__title { align-self: center; }
.cap-row__desc { align-self: center; }
@media (max-width: 900px) {
  .cap-row {
    grid-template-columns: auto 1fr;
    gap: 14px 18px;
    align-items: start;
  }
  .cap-row__marker { flex-direction: row; align-items: center; gap: 12px; }
  .cap-row__icon { width: 42px; height: 42px; }
  .cap-row__title { grid-column: 2; align-self: start; }
  .cap-row__desc { grid-column: 1 / -1; align-self: start; }
}

/* 3 · Footer — kompakt (dikey yükseklik + iç boşluk küçültüldü) */
.site-foot { padding-block: clamp(48px, 5.5vw, 76px) 22px; }
.site-foot__grid { gap: 36px; padding-bottom: 32px; }
@media (min-width: 800px) { .site-foot__grid { gap: 40px 48px; } }
.site-foot__lockup { gap: 16px; max-width: 34ch; }
.site-foot__lockup-brand { padding-bottom: 16px; gap: 8px; }
.site-foot__col h4 { margin-bottom: 12px; }
.site-foot__col ul { gap: 7px; }
.site-foot__lockup p { font-size: 13.5px; line-height: 1.55; }
.site-foot__base { padding-top: 22px; }

/* ═══════════════════════════════════════════════════════════════════════
   v10 — Sertifikalar kart dengesi · Hero buton/metrik/nav ayrışması
   ═══════════════════════════════════════════════════════════════════════ */

/* 1 · Sertifikalar — boş alt boşluk yok, 4×2 sıkı bordered grid, meta geri */
.cert-grid {
  /* minmax(0,1fr): uzun unvanlar (örn. "Performans Tabanlı Tasarım") cell
     min-content'i ile kolon tabanını zorlayıp grid'i viewport'un ötesine
     şişirmesin (önceden 1024px'te .container @ x1057 → 33px taşma). */
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
@media (min-width: 560px)  { .cert-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
/* 4-kolon eşiği 1000px → 1100px'e yükseltildi: 1024px'lik laptop ekran
   artık rahat 2-kolona düşer (cell ~472px), 4-kolon yalnız 1100+'da
   açılır (cell ≥ 250px, uzun unvanlar zarifçe sarar). */
@media (min-width: 1100px) { .cert-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.cert-cell {
  min-height: 0;
  padding: clamp(20px, 2.2vw, 30px) clamp(18px, 1.8vw, 26px);
  gap: 12px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  justify-content: flex-start;
}
.cert-cell__id { gap: 8px; }
.cert-cell__mark { margin-top: 0; font-size: clamp(22px, 2vw, 28px); }
.cert-cell__name { font-size: 12.5px; line-height: 1.3; }
.cert-cell__meta {
  display: flex; flex-direction: column; gap: 4px;
  margin-top: auto; padding-top: 14px;
  font-family: var(--ff-mono); font-size: 10px;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-3);
}
.cert-cell__meta span { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cert-cell__meta strong { color: var(--ink); font-weight: 500; }

/* 2 · Hero foot — metrikler (sol) · slider nav (sağ), net ayrışma */
.hero-sec__foot {
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 24px 40px;
}
.hero-sec__metrics { display: flex; align-items: flex-start; gap: clamp(28px, 3.4vw, 56px); }
.hero-sec__foot .hero-sec__stat {
  border-top: 1px solid oklch(0.55 0.012 60 / 0.4);
  padding-top: 10px; min-width: 0; gap: 4px;
}
.hero-sec__foot .hero-sec__stat-num { font-size: clamp(22px, 2vw, 28px); }

/* nav artık foot içinde — floating absolute konumu iptal */
.hero-sec__foot .hero-slider__nav {
  position: static; right: auto; bottom: auto; transform: none;
}

@media (max-width: 800px) {
  .hero-sec__foot { grid-template-columns: 1fr; gap: 16px; }
  .hero-sec__foot .hero-slider__nav { justify-self: start; }
  .hero-sec__metrics { gap: 32px; }
}

/* ═══════════════════════════════════════════════════════════════════════
   v11 — Hero alt kompozisyon yeniden tasarımı (operatör geri bildirimi)
   ────────────────────────────────────────────────────────────────────────
   Tam-genişlik utility bandı kaldırıldı. Hero artık 100vh TEK sinematik
   kare: metrikler içerik koluna hizalı rafine ikili (sol alt), slider nav
   minimal floating cluster (sağ alt). İkisi de görüntünün üstüne biner —
   solid drawer / tam-genişlik çizgi yok. Tek sinyal disiplini korunur
   (mavi yalnız primary CTA hover + slider progress).
   ═══════════════════════════════════════════════════════════════════════ */

/* Bandın grid satırı kalkar → track tüm 100vh'ı doldurur (tek kare) */
.hero-sec { grid-template-rows: 1fr; }

/* İçerik kolonu: alt overlay (metrik + nav) için nefes payı */
.hero-slide .hero-sec__body { padding-bottom: clamp(140px, 18vh, 216px); }

/* Foot artık satır değil — görüntü üstüne binen, dengeli overlay */
.hero-sec__foot {
  position: absolute;
  inset: auto 0 0 0;
  z-index: 3;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 28px 48px;
  padding: 0 var(--container-padding) clamp(44px, 5.6vh, 76px);
  border-top: 0;            /* tam-genişlik bant çizgisi kaldırıldı */
  background: none;         /* solid drawer yok — sinematik */
  /* Premium giriş: slide yükselişinin ardından zarif fade-up */
  opacity: 0;
  transform: translateY(18px);
  animation: heroFootRise var(--dur-900) var(--ease) 0.55s forwards;
}
@keyframes heroFootRise { to { opacity: 1; transform: none; } }

/* Metrikler — içerik koluyla aynı sol hiza; rafine monochrome ikili.
   Her stat KISA bir üst hairline tick taşır (tam-genişlik çizgi değil). */
.hero-sec__metrics {
  display: flex;
  align-items: flex-start;
  gap: clamp(40px, 4.4vw, 76px);
}
.hero-sec__foot .hero-sec__stat {
  border-top: 1px solid oklch(0.80 0.012 70 / 0.32);
  padding-top: 13px;
  gap: 6px;
  min-width: 0;
  max-width: 20ch;
}
.hero-sec__foot .hero-sec__stat-num {
  font-size: clamp(28px, 2.4vw, 38px);
  line-height: 0.96;
  letter-spacing: -0.03em;
}
.hero-sec__foot .hero-sec__stat-label {
  font-size: 10px;
  letter-spacing: 0.16em;
  color: oklch(0.82 0.010 65);
  max-width: 17ch;
}

/* Slider nav — minimal floating cluster, sağ alt baseline */
.hero-sec__foot .hero-slider__nav {
  position: static; right: auto; bottom: auto; transform: none;
  align-items: center;
  gap: 18px;
  padding-bottom: 2px;
}

/* Mobil (≤800px): metrikler üstte, nav altta — istifli, taşmasız */
@media (max-width: 800px) {
  .hero-slide .hero-sec__body { padding-bottom: clamp(156px, 25vh, 226px); }
  .hero-sec__foot {
    flex-direction: column;
    align-items: stretch;
    gap: 18px;
    padding-bottom: clamp(30px, 5vh, 48px);
  }
  .hero-sec__metrics { gap: 28px; }
  .hero-sec__foot .hero-sec__stat-num { font-size: clamp(26px, 7vw, 32px); }
  .hero-sec__foot .hero-slider__nav { justify-content: space-between; gap: 14px; }
}
@media (max-width: 420px) {
  .hero-sec__metrics { gap: 18px; }
  .hero-sec__foot .hero-sec__stat-label { font-size: 9px; letter-spacing: 0.12em; }
}

/* Erişilebilirlik — hareket azaltma: giriş animasyonu yok */
@media (prefers-reduced-motion: reduce) {
  .hero-sec__foot { opacity: 1; transform: none; animation: none; }
}

/* ═══════════════════════════════════════════════════════════════════════
   v12 — Hero sol-alt köşe düzeni (reviewer geri bildirimi)
   ────────────────────────────────────────────────────────────────────────
   Tespit edilen sorun:
   - Dikey rail (.hero-sec__rail) top:96/bottom:96 ile metrik bbox'ı
     ORTASINA (~y804) dangle ediyordu → "hizasız".
   - CTA ↔ metrik arası yalnız 13px → "sıkışık tek yığın".

   Çözüm (CSS-only, HTML/JS yapısı korunur):
   1) Rail.bottom = clamp(160, 19vh, 220) — kenar süsünün alt ucu foot
      zonunun ÜZERİNDE sonlanır. Rail mid-metric'te asla kesilmez; üç
      sol-kenar öğesi (rail x20 · CTA x56 · metrik x56) modüler bir
      ritimle ayrışır — rail kenar bandı, CTA + metrik tek baseline.
   2) Body padding-bottom clamp(168, 20.5vh, 236) — CTA bottom ile metrik
      üst hairline arası ≥~30px (iki kasıtlı tier). Per-stat top tick'leri
      v11'den korunur; ekstra full-width "bant" çizgisi YOK.
   ═══════════════════════════════════════════════════════════════════════ */

/* (1) Dikey rail metrik bbox'ı içinde dangle etmesin */
.hero-sec__rail { bottom: clamp(160px, 19vh, 220px); }

/* (2) CTA ↔ metrik arasında nefes — iki tutarlı katman.
   Sadece desktop'a uygula; mobil v11'in 25vh kuralını korusun (mobilde
   foot iki satır olduğu için daha fazla padding-bottom gerek). */
@media (min-width: 801px) {
  .hero-slide .hero-sec__body { padding-bottom: clamp(168px, 20.5vh, 236px); }
}

/* ═══════════════════════════════════════════════════════════════════════
   v4 · YAKLAŞIM (.app-prin) · GERÇEK FOTOĞRAF media + scrim
   Her ilke kartı 16:9 mühendislik fotoğrafı ile açılır; hover'da scrim
   açılır + zoom (smooth, easing'li). Kart birden dolu/premium duruyor.
   ═══════════════════════════════════════════════════════════════════════ */
.app-prin__media {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--r-md);
  background: var(--bg-deep);
  margin-bottom: 18px;
}
.app-prin__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.85) contrast(0.94) brightness(0.86);
  transform: scale(1.02);
  transition: filter 700ms var(--ease), transform 1200ms var(--ease);
}
.app-prin__media-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg,
    oklch(0.135 0.006 60 / 0.20) 0%,
    oklch(0.135 0.006 60 / 0.55) 70%,
    oklch(0.135 0.006 60 / 0.78) 100%);
  transition: opacity 600ms var(--ease);
  pointer-events: none;
}
.app-prin__media-label {
  position: absolute;
  left: 14px; bottom: 12px;
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: oklch(0.94 0.008 70);
  z-index: 2;
}
.app-prin__media-label::before {
  content: "";
  display: inline-block;
  width: 18px; height: 1px;
  background: var(--signal);
  margin-right: 10px;
  vertical-align: middle;
}
.app-prin:hover .app-prin__media img {
  filter: grayscale(0) contrast(1.02) brightness(1);
  transform: scale(1.06);
}
.app-prin:hover .app-prin__media-scrim { opacity: 0.55; }

/* ═══════════════════════════════════════════════════════════════════════
   v4 · SÜREÇ (.proc-phase) · faz media slot — gerçek fotoğraf, hover smooth
   grid: 100px 120px 1fr auto  (num / media / body / meta)
   ═══════════════════════════════════════════════════════════════════════ */
.proc-phase {
  grid-template-columns: 100px 132px minmax(0, 1fr) auto;
}
.proc-phase__media {
  position: relative;
  width: 132px;
  height: 88px;
  overflow: hidden;
  border-radius: var(--r-md);
  margin: 0;
  background: var(--bg-deep);
  align-self: center;
}
.proc-phase__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(0.85) contrast(0.95) brightness(0.85);
  transform: scale(1.02);
  transition: filter 700ms var(--ease), transform 1200ms var(--ease);
}
.proc-phase__media-scrim {
  position: absolute; inset: 0;
  background: linear-gradient(180deg,
    oklch(0.135 0.006 60 / 0.12) 0%,
    oklch(0.135 0.006 60 / 0.62) 100%);
  transition: opacity 600ms var(--ease);
  pointer-events: none;
}
.proc-phase:hover .proc-phase__media img {
  filter: grayscale(0) contrast(1.02) brightness(1);
  transform: scale(1.08);
}
.proc-phase:hover .proc-phase__media-scrim { opacity: 0.35; }
.proc-phase__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-width: 0;
}
@media (max-width: 1100px) {
  .proc-phase { grid-template-columns: 80px 108px minmax(0, 1fr) auto; gap: 24px; }
  .proc-phase__media { width: 108px; height: 72px; }
}
@media (max-width: 900px) {
  .proc-phase {
    grid-template-columns: 60px 1fr;
    gap: 16px 20px;
  }
  .proc-phase__media {
    grid-column: 1 / -1;
    width: 100%;
    height: clamp(140px, 28vw, 200px);
    margin-bottom: 4px;
  }
  .proc-phase__body { grid-column: 2; }
  .proc-phase__meta { grid-column: 1 / -1; padding-left: 80px; text-align: left; }
}

/* ═══════════════════════════════════════════════════════════════════════
   v4 · DİSİPLİNLER (.cap-row) · hover-reveal media (sağdan görsel açılır)
   Eski .cap-row__icon hairline-square'i kaldırıldı; her satırın sağında
   absolute media slot var, default mat/gizli, hover'da smooth reveal +
   sol metin kolonu daha geniş okuma alanı kazanıyor.
   ═══════════════════════════════════════════════════════════════════════ */
.cap-row { position: relative; isolation: isolate; }
.cap-row__mini {
  display: block;
  width: 88px;
  height: 56px;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--bg-deep);
  margin-bottom: 10px;
}
.cap-row__mini img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: grayscale(0.55) contrast(0.95) brightness(0.92);
  transition: filter 600ms var(--ease);
}
.cap-row:hover .cap-row__mini img {
  filter: grayscale(0.05) contrast(1.02) brightness(1);
}
@media (max-width: 900px) {
  .cap-row__mini { width: 56px; height: 40px; }
}
/* prefers-reduced-motion: media transition'ları anlık */
@media (prefers-reduced-motion: reduce) {
  .app-prin__media img,
  .proc-phase__media img,
  .cap-row__mini img,
  .app-prin__media-scrim,
  .proc-phase__media-scrim,
  .cap-card__media img { transition: none; }
}

/* ═══════════════════════════════════════════════════════════════════════
   v5 · SÜREÇ — Phase Spread (zigzag editorial, engineering monograph)
   Her faz iki kolonlu spread; tek/çift fazlar ters (zigzag), büyük arka
   plan numarası, hairline spec listesi. Eski 4-col grid + timeline rail
   bu bölümde devre dışı (.proc-spread scope).
   ═══════════════════════════════════════════════════════════════════════ */
.proc-spread {
  display: grid;
  gap: 0;
  padding-block: clamp(20px, 2.4vw, 32px);
  border-top: 1px solid var(--line);
}
.proc-spread .proc-phase {
  display: grid;
  grid-template-columns: 64px 240px minmax(0, 1fr) minmax(0, 240px);
  gap: clamp(20px, 2.4vw, 36px);
  align-items: center;
  padding-block: clamp(20px, 2.2vw, 28px);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.proc-spread .proc-phase::before,
.proc-spread .proc-phase::after { display: none; }
.proc-spread .proc-phase--rev .proc-phase__media { order: 0; }
.proc-spread .proc-phase--rev .proc-phase__body { order: 0; }

/* col 1: number badge (replaces giant numeral) */
.proc-phase__numeral {
  position: static;
  display: block;
  font-family: var(--ff-mono);
  font-size: clamp(36px, 3.4vw, 48px);
  font-weight: 500;
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.02em;
  font-feature-settings: "tnum";
  align-self: center;
  pointer-events: auto;
  z-index: auto;
  grid-column: 1;
}
.proc-phase__numeral::after {
  content: "";
  display: block;
  width: 28px; height: 2px;
  background: var(--signal);
  margin-top: 10px;
}

/* col 2: media */
.proc-spread .proc-phase__media {
  width: 100%;
  height: clamp(120px, 13vw, 156px);
  aspect-ratio: auto;
  position: relative;
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--bg-deep);
  margin: 0;
  grid-column: 2;
}
.proc-spread .proc-phase__media img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: grayscale(0.5) contrast(0.97) brightness(0.94);
  transform: scale(1.02);
  transition: filter 600ms var(--ease), transform 800ms var(--ease);
}
.proc-spread .proc-phase:hover .proc-phase__media img {
  filter: grayscale(0) contrast(1) brightness(1);
  transform: scale(1.05);
}
.proc-spread .proc-phase__caption { display: none; }

/* col 3: body — kicker + title + desc */
.proc-spread .proc-phase__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 0;
  position: relative;
  isolation: auto;
  grid-column: 3;
}
.proc-phase__kicker {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
  margin-bottom: 2px;
}
.proc-phase__kicker::before {
  content: "";
  display: inline-block;
  width: 18px; height: 1px;
  background: var(--signal);
  margin-right: 10px;
}
.proc-spread .proc-phase__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.18;
  letter-spacing: -0.018em;
  color: var(--ink);
  text-wrap: balance;
  margin: 0;
  transition: color var(--dur-300) var(--ease);
}
.proc-spread .proc-phase__title .serif-i {
  color: var(--signal-deep); letter-spacing: 0; margin-inline: 0.02em;
}
.proc-spread .proc-phase:hover .proc-phase__title { color: var(--signal-deep); }
.proc-spread .proc-phase__desc {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 56ch;
  margin: 4px 0 0;
}

/* col 4: spec list — kompakt dl, sağda */
.proc-phase__spec {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  border-top: 0;
  grid-column: 4;
  align-self: center;
}
.proc-phase__spec > div {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  padding-block: 5px;
  border-bottom: 1px dashed var(--line);
  gap: 10px;
  align-items: baseline;
}
.proc-phase__spec > div:last-child { border-bottom: 0; }
.proc-phase__spec dt {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin: 0;
}
.proc-phase__spec dd {
  margin: 0;
  font-family: var(--ff-display);
  font-size: 13px;
  color: var(--ink);
  font-weight: 500;
}

@media (max-width: 1100px) {
  .proc-spread .proc-phase {
    grid-template-columns: 56px 200px minmax(0, 1fr) minmax(0, 200px);
    gap: 20px;
  }
}
@media (max-width: 900px) {
  .proc-spread .proc-phase {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 14px 18px;
    padding-block: 22px;
  }
  .proc-phase__numeral { grid-column: 1; align-self: start; }
  .proc-spread .proc-phase__media {
    grid-column: 2; grid-row: 1;
    height: clamp(120px, 28vw, 180px);
  }
  .proc-spread .proc-phase__body { grid-column: 2; }
  .proc-phase__spec { grid-column: 1 / -1; padding-left: 70px; margin-top: 4px; }
  .proc-phase__spec > div { grid-template-columns: 70px minmax(0, 1fr); }
}

/* ═══════════════════════════════════════════════════════════════════════
   v5 · DİSİPLİNLER — Spec Card mosaic (hero + 2×2 grid)
   I.01 hero spans full width (büyük media + body), II-V eşit kart
   2-kolon grid'de. Her kart: media + body (head + title + lede + items).
   ═══════════════════════════════════════════════════════════════════════ */
.cap-mosaic {
  display: grid;
  gap: 0;
  margin-top: clamp(24px, 3vw, 40px);
  border-top: 1px solid var(--line);
}
.cap-card--hero { grid-column: auto; }

.cap-card {
  display: grid;
  grid-template-columns: 88px 220px minmax(0, 1fr) minmax(0, 260px);
  gap: clamp(20px, 2.4vw, 36px);
  align-items: center;
  padding: 0;
  padding-block: clamp(20px, 2.2vw, 28px);
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  overflow: visible;
  transition: background-color var(--dur-300) var(--ease);
  isolation: auto;
}
.cap-card--hero { grid-template-columns: 88px 220px minmax(0, 1fr) minmax(0, 260px); }
.cap-card:hover {
  background: oklch(0.985 0.005 70);
  box-shadow: none;
}

.cap-card__media {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--bg-deep);
  border-radius: var(--r-md);
  width: 220px;
  height: clamp(120px, 12vw, 144px);
  min-height: 0;
  grid-column: 2;
}
.cap-card--hero .cap-card__media { min-height: 0; }
.cap-card__media img {
  width: 100%; height: 100%; object-fit: cover; display: block;
  filter: grayscale(0.5) contrast(0.96) brightness(0.93);
  transform: scale(1.02);
  transition: filter 600ms var(--ease), transform 800ms var(--ease);
}
.cap-card:hover .cap-card__media img {
  filter: grayscale(0) contrast(1) brightness(1);
  transform: scale(1.05);
}
.cap-card__body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 0;
  grid-column: 3;
}
.cap-card__head {
  display: none;
}
.cap-card__index {
  font-family: var(--ff-mono);
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--signal);
  grid-column: 1;
  align-self: center;
  font-feature-settings: "tnum";
}
.cap-card__index::after {
  content: "";
  display: block;
  width: 24px; height: 2px;
  background: var(--signal);
  margin-top: 10px;
}
.cap-card__tag {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
  display: inline-flex;
  align-items: center;
}
.cap-card__tag::before {
  content: "";
  display: inline-block;
  width: 16px; height: 1px;
  background: var(--signal);
  margin-right: 10px;
}
.cap-card__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(18px, 1.5vw, 22px);
  line-height: 1.18;
  letter-spacing: -0.018em;
  color: var(--ink);
  margin: 2px 0 0;
  text-wrap: balance;
  transition: color var(--dur-300) var(--ease);
}
.cap-card--hero .cap-card__title { font-size: clamp(18px, 1.5vw, 22px); }
.cap-card:hover .cap-card__title { color: var(--signal-deep); }
.cap-card__lede {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-2);
  margin: 4px 0 0;
  max-width: 56ch;
}
.cap-card__items {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  grid-column: 4;
  align-self: center;
  border-top: 0;
}
.cap-card__items li {
  font-family: var(--ff-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  padding-block: 5px;
  border-bottom: 1px dashed var(--line);
  display: flex;
  gap: 10px;
  align-items: baseline;
}
.cap-card__items li::before {
  content: "→";
  color: var(--ink-3);
  font-family: var(--ff-mono);
}
.cap-card__items li:last-child { border-bottom: 0; }

@media (max-width: 1100px) {
  .cap-card,
  .cap-card--hero {
    grid-template-columns: 72px 180px minmax(0, 1fr) minmax(0, 200px);
    gap: 18px;
  }
  .cap-card__media { width: 180px; height: clamp(108px, 12vw, 132px); }
}
@media (max-width: 900px) {
  .cap-card,
  .cap-card--hero {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 12px 16px;
    padding-block: 22px;
  }
  .cap-card__index { grid-column: 1; align-self: start; padding-top: 4px; }
  .cap-card__media {
    grid-column: 2; grid-row: 1;
    width: 100%;
    height: clamp(140px, 30vw, 200px);
  }
  .cap-card__body { grid-column: 2; }
  .cap-card__items { grid-column: 1 / -1; padding-left: 72px; }
}

/* ═══════════════════════════════════════════════════════════════════════
   v3 · REFERANSLAR (.ref-sec / .ref-marquee) — yarım-yükseklik, sonsuz çift sıra
   Seamless loop tekniği: track içeriği iki kez (set 1 + set 2 birebir aynı).
   translateX(-50%) → ilk set tamamen kayar, ikinci set başlangıca akar,
   anında 0%'a sıçrayınca göz kaymayı yakalayamaz (seamless).
   ═══════════════════════════════════════════════════════════════════════ */
.ref-sec {
  display: block;
  background: var(--bg);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(48px, 6vw, 88px);
  overflow: hidden;
}
.ref-sec__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-bottom: clamp(28px, 3.6vw, 44px);
}
@media (min-width: 900px) {
  .ref-sec__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
    gap: 24px clamp(40px, 5vw, 96px);
    align-items: end;
  }
}
.ref-sec__id {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-family: var(--ff-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase;
  color: var(--ink-3);
}
.ref-sec__id-num { color: var(--ink-2); }
.ref-sec__title {
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: clamp(26px, 2.6vw, 38px);
  line-height: 1.12;
  letter-spacing: -0.022em;
  color: var(--ink);
  text-wrap: balance;
  margin: 0;
}
.ref-sec__title .serif-i { color: var(--signal-deep); letter-spacing: 0; }

/* marquee shell — full-bleed, padding-x sıfır, kart ölçeği container-bağımsız */
.ref-marquee {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
  width: 100%;
}
/* yan-edge fade mask — başlangıç/bitiş kartları yumuşak çıksın */
.ref-marquee::before,
.ref-marquee::after {
  content: "";
  position: absolute;
  top: 0; bottom: 0;
  width: clamp(40px, 6vw, 96px);
  pointer-events: none;
  z-index: 3;
}
.ref-marquee::before { left: 0;  background: linear-gradient(90deg, var(--bg), transparent); }
.ref-marquee::after  { right: 0; background: linear-gradient(-90deg, var(--bg), transparent); }

.ref-marquee__row { overflow: hidden; width: 100%; }
.ref-marquee__track {
  display: flex;
  gap: 14px;
  width: max-content;
  animation: ref-marquee-rtl 48s linear infinite;
  will-change: transform;
}
.ref-marquee__row--ltr .ref-marquee__track {
  animation: ref-marquee-ltr 56s linear infinite;
}
.ref-marquee:hover .ref-marquee__track {
  animation-play-state: paused; /* hover'da yumuşak dur — süre değiştirmek sıçramaya yol açıyordu */
}

@keyframes ref-marquee-rtl {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
@keyframes ref-marquee-ltr {
  from { transform: translateX(-50%); }
  to   { transform: translateX(0); }
}

/* tek bir referans kartı — IKON MODU (v3.1)
   Eski text kartı (sahte firma isimleri) → sektör tipolojisi şeridi:
   her kart = mono ID + monoline sektör ikonu + sektör tag'ı.
   Tek ink, hairline, blueprint-keskin (≤6px). */
.ref-card {
  flex: none;
  width: clamp(168px, 16vw, 208px);
  min-height: 100px;
  display: grid;
  place-items: center;
  padding: 22px 26px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg);
  transition: border-color var(--dur-300) var(--ease),
              background-color var(--dur-300) var(--ease);
}
.ref-card:hover {
  border-color: var(--ink);
  background: oklch(0.985 0.004 70);
}
/* gerçek logolar — doğrudan renkli */
.ref-card__logo {
  display: block;
  width: 100%;
  max-width: 124px;
  height: auto;
  object-fit: contain;
}
/* Eski text-mode kalıntıları (geri-uyum; yeni markup'ta yok) */
.ref-card__num,
.ref-card__icon,
.ref-card__seg,
.ref-card__name,
.ref-card__loc { display: none; }

/* alt foot şeridi */
.ref-sec__foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: clamp(28px, 3.4vw, 44px);
  padding-top: clamp(16px, 1.8vw, 22px);
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.ref-sec__foot-count {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
}
.ref-sec__foot-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink);
  border-bottom: 1px solid var(--ink-3);
  padding-bottom: 4px;
  transition: color var(--dur-300) var(--ease), border-color var(--dur-300) var(--ease);
}
.ref-sec__foot-link:hover { color: var(--signal); border-color: var(--signal); }
.ref-sec__foot-link svg { width: 14px; height: 14px; stroke: currentColor; fill: none; stroke-width: 1.5; }

/* prefers-reduced-motion → statik grid (kayma yok) */
@media (prefers-reduced-motion: reduce) {
  .ref-marquee__track {
    animation: none;
    flex-wrap: wrap;
    width: 100%;
    justify-content: center;
  }
  .ref-marquee:hover .ref-marquee__track { animation: none; }
  .ref-marquee__row { overflow: visible; }
  .ref-marquee::before,
  .ref-marquee::after { display: none; }
  /* dupliked set 2 gizle: ilk 8 kart sonrasını sakla */
  .ref-marquee__track > .ref-card:nth-child(n+9) { display: none; }
}

@media (max-width: 620px) {
  .ref-card { width: clamp(160px, 52vw, 200px); min-height: 84px; padding: 16px 20px; }
  .ref-card__logo { max-width: 110px; }
  .ref-sec__foot { flex-direction: column; align-items: flex-start; }
}