/* HT-CURA — "Molekülden karara"
   Tek stil dosyası. Renkler ve ölçüler :root'ta.
   Anlatı: mürekkep (veri, molekül) → kâğıt (yazılı karar). Pembe yalnız karar anını gösterir
   (titrasyonda dönüm noktasının rengi). Turuncu yalnız toksisite içindir. */

/* ---------- Yazı tipleri (sitenin içinde; SIL OFL 1.1, assets/fonts/LISANS-OFL.txt) ---------- */
@font-face {
  font-family: "Instrument Serif";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/instrument-serif-latin-400-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Instrument Serif";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/instrument-serif-latin-ext-400-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Instrument Serif";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/instrument-serif-latin-400-italic.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Instrument Serif";
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url("/assets/fonts/instrument-serif-latin-ext-400-italic.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Geist";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/geist-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Geist";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/geist-latin-ext-wght-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Geist Mono";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/geist-mono-latin-wght-normal.woff2") format("woff2");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Geist Mono";
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("/assets/fonts/geist-mono-latin-ext-wght-normal.woff2") format("woff2");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- Belirteçler ---------- */
:root {
  /* Renkler */
  --murekkep: #0c1f3a;          /* mürekkep laciverti: veri ve molekül bölümleri */
  --murekkep-2: #142a4a;        /* mürekkep üstünde yükseltilmiş yüzey */
  --murekkep-3: #1d3a63;
  --kagit: #eff2f1;             /* prospektüs kâğıdı: yazılı karar bölümleri */
  --kagit-2: #e3e8e6;
  --yazi-murekkep: #eaf0f5;
  --soluk-murekkep: #9aabbf;
  --yazi-kagit: #0c1f3a;
  --soluk-kagit: #4b5a69;
  --donum: #ff4f8b;             /* dönüm noktası pembesi: karar anı (mürekkep üstünde) */
  --donum-koyu: #c2185b;        /* kâğıt üstünde okunur pembe */
  --tehlike: #ff9f1c;           /* toksisite turuncusu */
  --yer-tutucu: #8a4b00;
  --yer-tutucu-zemin: #fff1d6;

  /* Yazı */
  --serif: "Instrument Serif", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "Geist", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "Geist Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;

  /* Ölçek */
  --dev: clamp(3.3rem, 1.4rem + 7.4vw, 9.6rem);
  --buyuk: clamp(2.4rem, 1.4rem + 3.6vw, 5rem);
  --orta: clamp(1.6rem, 1.2rem + 1.4vw, 2.3rem);
  --govde: 1.0625rem;
  --kucuk: 0.8125rem;

  /* Düzen */
  --genislik: 78rem;
  --kenar: clamp(1rem, 0.6rem + 2vw, 2.5rem);
  --ust-yukseklik: 4.25rem;
  --kose: 14px;
  --yavas: cubic-bezier(0.16, 1, 0.3, 1);

  color-scheme: light;
}

/* ---------- Temel ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: var(--ust-yukseklik);
}

body {
  margin: 0;
  background: var(--murekkep);
  color: var(--yazi-murekkep);
  font-family: var(--sans);
  font-size: var(--govde);
  line-height: 1.6;
  font-feature-settings: "ss01", "cv11";
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

img,
svg,
canvas {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

a:hover {
  text-decoration-color: var(--vurgu, var(--donum));
}

:focus-visible {
  outline: 2px solid var(--donum);
  outline-offset: 3px;
  border-radius: 4px;
}

[data-tema="kagit"] :focus-visible {
  outline-color: var(--donum-koyu);
}

h1,
h2,
h3,
p,
ul,
ol,
dl,
figure,
blockquote {
  margin: 0;
}

ul[class],
ol[class] {
  list-style: none;
  padding: 0;
}

button,
input {
  font: inherit;
  color: inherit;
}

.gorunmez {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.atla {
  position: fixed;
  left: var(--kenar);
  top: -4rem;
  z-index: 100;
  padding: 0.6rem 1rem;
  background: var(--kagit);
  color: var(--murekkep);
  border-radius: 999px;
  font-weight: 600;
}

.atla:focus {
  top: 0.75rem;
}

/* ---------- Bölüm temaları ---------- */
[data-tema="murekkep"] {
  --zemin: var(--murekkep);
  --yazi: var(--yazi-murekkep);
  --soluk: var(--soluk-murekkep);
  --cizgi: rgba(234, 240, 245, 0.14);
  --vurgu: var(--donum);
  color-scheme: dark;
  background-color: var(--zemin);
  color: var(--yazi);
}

[data-tema="kagit"] {
  --zemin: var(--kagit);
  --yazi: var(--yazi-kagit);
  --soluk: var(--soluk-kagit);
  --cizgi: rgba(12, 31, 58, 0.16);
  --vurgu: var(--donum-koyu);
  color-scheme: light;
  background-color: var(--zemin);
  color: var(--yazi);
  /* prospektüs kâğıdının dokusu */
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.05 0 0 0 0 0.12 0 0 0 0 0.23 0 0 0 0.06 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---------- Ortak yazı biçimleri ---------- */
.sar {
  width: 100%;
  max-width: var(--genislik);
  margin-inline: auto;
  padding-inline: var(--kenar);
}

.etiket {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--soluk);
}

.tez {
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--buyuk);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.tez em,
.dev em {
  font-style: italic;
  color: var(--vurgu);
}

.yer-tutucu {
  display: inline-block;
  padding: 0 0.4em;
  border: 1px dashed currentColor;
  border-radius: 4px;
  background: var(--yer-tutucu-zemin);
  color: var(--yer-tutucu);
  font-family: var(--mono);
  font-size: 0.8em;
  letter-spacing: 0;
  line-height: 1.6;
  vertical-align: 0.1em;
  text-transform: none;
}

/* ---------- Üst bilgi: hap biçiminde menü ---------- */
.ust {
  --ust-yazi: var(--yazi-murekkep);
  --ust-zemin: rgba(12, 31, 58, 0.55);
  --ust-cizgi: rgba(234, 240, 245, 0.16);
  position: fixed;
  inset: 0 0 auto;
  z-index: 60;
  height: var(--ust-yukseklik);
  color: var(--ust-yazi);
  transition: color 0.4s var(--yavas);
  pointer-events: none;
}

html[data-ust-tema="kagit"] .ust {
  --ust-yazi: var(--yazi-kagit);
  --ust-zemin: rgba(239, 242, 241, 0.72);
  --ust-cizgi: rgba(12, 31, 58, 0.14);
  --ust-arka: rgba(239, 242, 241, 0.96);
}

/* Altından geçen içerik logoyla çakışmasın diye üstten bir örtü. */
.ust::before {
  content: "";
  position: absolute;
  inset: 0 0 -1.75rem;
  background: linear-gradient(var(--ust-arka, rgba(12, 31, 58, 0.94)) 58%, transparent);
  opacity: var(--ust-ortu, 0);
  transition: opacity 0.4s var(--yavas);
  pointer-events: none;
}

html[data-kaydi] .ust {
  --ust-ortu: 1;
}

.ust .sar {
  position: relative;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: none;
}

.ust a,
.ust button {
  pointer-events: auto;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 650;
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.logo__atom {
  width: 0.62rem;
  height: 0.62rem;
  border-radius: 50%;
  background: var(--donum);
  box-shadow: 0 0 0 3px rgba(255, 79, 139, 0.22), 0 0 18px rgba(255, 79, 139, 0.6);
}

.menu-ac {
  display: none;
  padding: 0.55rem 1rem;
  border: 1px solid var(--ust-cizgi);
  border-radius: 999px;
  background: var(--ust-zemin);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
}

.menu {
  pointer-events: auto;
}

.menu ul {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin: 0;
  list-style: none;
  padding: 0.3rem;
  border: 1px solid var(--ust-cizgi);
  border-radius: 999px;
  background: var(--ust-zemin);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.menu a {
  display: block;
  padding: 0.45rem 0.95rem;
  border-radius: 999px;
  font-size: 0.9375rem;
  text-decoration: none;
  transition: background-color 0.3s var(--yavas);
}

.menu a:hover {
  background: color-mix(in srgb, currentColor 10%, transparent);
}

.menu a[aria-current="page"] {
  background: color-mix(in srgb, currentColor 12%, transparent);
}

.menu .dil a {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  opacity: 0.8;
}

.menu-kapat {
  display: none;
}

@media (max-width: 52rem) {
  .menu-ac {
    display: inline-block;
  }

  /* Telefonda menü tam ekran bir katmandır (popover; JavaScript gerekmez). */
  .menu[popover] {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    max-width: none;
    max-height: none;
    margin: 0;
    padding: 6rem var(--kenar) 2rem;
    border: 0;
    background: var(--murekkep);
    color: var(--yazi-murekkep);
  }

  .menu[popover]:not(:popover-open) {
    display: none;
  }

  .menu ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding: 0;
    border: 0;
    background: none;
    backdrop-filter: none;
  }

  .menu a {
    padding: 0.15rem 0;
    font-family: var(--serif);
    font-size: 3rem;
    line-height: 1.15;
  }

  .menu a:hover,
  .menu a[aria-current="page"] {
    background: none;
  }

  .menu a[aria-current="page"] {
    font-style: italic;
    color: var(--donum);
  }

  .menu .dil a {
    margin-top: 1.5rem;
    font-size: 0.875rem;
  }

  .menu-kapat {
    display: block;
    position: absolute;
    top: 1rem;
    right: var(--kenar);
    padding: 0.55rem 1rem;
    border: 1px solid rgba(234, 240, 245, 0.2);
    border-radius: 999px;
    background: none;
    font-family: var(--mono);
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    cursor: pointer;
  }
}

@media (min-width: 52.01rem) {
  .menu[popover] {
    display: block;
    position: static;
    inset: auto;
    width: auto;
    height: auto;
    margin: 0;
    padding: 0;
    border: 0;
    background: none;
    color: inherit;
    overflow: visible;
  }
}

/* ---------- Sahne: molekülden doz eğrisine ---------- */
.sahne {
  position: relative;
  background:
    radial-gradient(60rem 40rem at 72% 38%, rgba(41, 88, 150, 0.45), transparent 70%),
    radial-gradient(40rem 30rem at 10% 90%, rgba(255, 79, 139, 0.08), transparent 70%),
    var(--murekkep);
}

.sahne__cerceve {
  position: relative;
}

.sahne__tuval {
  display: none;
}

.sahne__giris {
  position: relative;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 1.5rem;
  padding: calc(var(--ust-yukseklik) + 2rem) var(--kenar) clamp(3rem, 8vh, 6rem);
  max-width: var(--genislik);
  margin-inline: auto;
}

.dev {
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--dev);
  line-height: 0.88;
  letter-spacing: -0.03em;
  max-width: 11ch;
}

.dev .satir {
  display: block;
}

.sahne__ozet {
  max-width: 34rem;
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.25rem);
  color: var(--soluk);
}

.sahne__asagi {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  width: fit-content;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--soluk);
}

.sahne__asagi::before {
  content: "";
  width: 2.5rem;
  height: 1px;
  background: currentColor;
}

/* Ara yazı: molekül dağılırken (yalnız kayan anlatıda) */
.sahne__ara {
  display: none;
}

.hareket .sahne__ara {
  position: absolute;
  left: max(var(--kenar), calc((100vw - var(--genislik)) / 2 + var(--kenar)));
  bottom: 16vh;
  display: grid;
  gap: 0.8rem;
  max-width: 30rem;
  opacity: var(--ara-o, 0);
  transform: translate3d(0, var(--ara-y, 0px), 0);
  pointer-events: none;
}

.sahne__ara-yazi {
  font-family: var(--serif);
  font-size: var(--buyuk);
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.sahne__ara-yazi em {
  font-style: italic;
}

/* Doz deneyi */
.sahne__doz {
  position: relative;
  display: grid;
  grid-template-columns: minmax(16rem, 0.8fr) 1.4fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  max-width: var(--genislik);
  margin-inline: auto;
  padding: clamp(4rem, 10vh, 7rem) var(--kenar);
}

.soz blockquote p {
  font-family: var(--serif);
  font-size: var(--buyuk);
  line-height: 0.95;
  letter-spacing: -0.02em;
}

.soz blockquote em {
  font-style: italic;
  color: var(--tehlike);
}

.soz figcaption {
  margin-top: 0.9rem;
}

.deney__acik {
  margin-top: 1.5rem;
  max-width: 28rem;
  color: var(--soluk);
}

.deney__kontrol {
  margin-top: 2rem;
}

.deney__kontrol label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

/* Kaydırıcı: doz cetveli */
.deney__kontrol input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 2.75rem;
  margin: 0.25rem 0 0;
  background:
    repeating-linear-gradient(to right, rgba(234, 240, 245, 0.35) 0 1px, transparent 1px 10%) 0 70% / 100% 10px no-repeat,
    repeating-linear-gradient(to right, rgba(234, 240, 245, 0.18) 0 1px, transparent 1px 2%) 0 70% / 100% 6px no-repeat,
    linear-gradient(rgba(234, 240, 245, 0.35), rgba(234, 240, 245, 0.35)) 0 50% / 100% 1px no-repeat;
  cursor: pointer;
}

.deney__kontrol input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 50%;
  background: var(--yazi-murekkep);
  border: 4px solid var(--murekkep);
  box-shadow: 0 0 0 1px rgba(234, 240, 245, 0.6), 0 0 24px rgba(234, 240, 245, 0.45);
  transition: background-color 0.25s;
}

.deney__kontrol input[type="range"]::-moz-range-thumb {
  width: 1.1rem;
  height: 1.1rem;
  border-radius: 50%;
  background: var(--yazi-murekkep);
  border: 4px solid var(--murekkep);
  box-shadow: 0 0 0 1px rgba(234, 240, 245, 0.6), 0 0 24px rgba(234, 240, 245, 0.45);
}

.deney[data-bolge="pencere"] input[type="range"]::-webkit-slider-thumb {
  background: var(--donum);
  box-shadow: 0 0 0 1px var(--donum), 0 0 28px rgba(255, 79, 139, 0.8);
}

.deney[data-bolge="pencere"] input[type="range"]::-moz-range-thumb {
  background: var(--donum);
}

.deney[data-bolge="toksik"] input[type="range"]::-webkit-slider-thumb,
.deney[data-bolge="baslangic"] input[type="range"]::-webkit-slider-thumb {
  background: var(--tehlike);
  box-shadow: 0 0 0 1px var(--tehlike), 0 0 28px rgba(255, 159, 28, 0.7);
}

.deney__okuma {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.25rem;
}

.deney__okuma div {
  padding-top: 0.6rem;
  border-top: 1px solid var(--cizgi);
}

.deney__okuma dd {
  margin: 0.15rem 0 0;
  font-family: var(--mono);
  font-size: clamp(1.8rem, 1.3rem + 1.5vw, 2.6rem);
  font-weight: 300;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}

.deney__okuma .etki dd {
  color: var(--yazi-murekkep);
}

.deney__okuma .toksisite dd {
  color: var(--tehlike);
}

.deney__bolge {
  margin-top: 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 2.1rem;
  padding: 0.3rem 0.9rem 0.3rem 0.7rem;
  border: 1px solid var(--cizgi);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

.deney__bolge::before {
  content: "";
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
  background: var(--soluk);
}

.deney[data-bolge="pencere"] .deney__bolge {
  border-color: rgba(255, 79, 139, 0.6);
  color: var(--donum);
}

.deney[data-bolge="pencere"] .deney__bolge::before {
  background: var(--donum);
  box-shadow: 0 0 12px var(--donum);
}

.deney[data-bolge="toksik"] .deney__bolge,
.deney[data-bolge="baslangic"] .deney__bolge {
  border-color: rgba(255, 159, 28, 0.6);
  color: var(--tehlike);
}

.deney[data-bolge="toksik"] .deney__bolge::before,
.deney[data-bolge="baslangic"] .deney__bolge::before {
  background: var(--tehlike);
}

.deney[data-bolge="artiyor"] .deney__bolge::before {
  background: var(--yazi-murekkep);
}

.deney__not {
  margin-top: 1rem;
  font-size: var(--kucuk);
  color: var(--soluk);
}

.deney__alan {
  position: relative;
  aspect-ratio: 16 / 10;
  width: 100%;
}

.deney__durgun {
  width: 100%;
  height: 100%;
}

/* JavaScript yoksa yalnız durgun çizim ve açıklama görünür */
html:not(.js) .deney__kontrol,
html:not(.js) .deney__okuma,
html:not(.js) .deney__bolge {
  display: none;
}

/* JavaScript varsa çizimi tuval yapar */
.js .sahne__tuval {
  display: block;
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.js .deney__durgun {
  visibility: hidden;
}

/* Hareket açıksa sahne yapışkan bir anlatıya dönüşür */
.hareket .sahne {
  height: 360vh;
  height: 360svh;
}

.hareket .sahne__cerceve {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100svh;
  overflow: hidden;
}

.hareket .sahne__giris,
.hareket .sahne__doz {
  position: absolute;
  inset: 0;
  min-height: 0;
  width: 100%;
}

.hareket .sahne__giris {
  opacity: var(--giris-o, 1);
  transform: translate3d(0, var(--giris-y, 0px), 0);
  will-change: opacity, transform;
}

.hareket .sahne__doz {
  height: 100%;
  opacity: var(--doz-o, 0);
  visibility: var(--doz-g, hidden);
  padding-top: calc(var(--ust-yukseklik) + 1rem);
}

.hareket .sahne__doz .deney__sol {
  transform: translate3d(0, var(--doz-y, 24px), 0);
}

@media (max-width: 52rem) {
  .sahne__doz {
    grid-template-columns: 1fr;
    align-content: center;
  }

  .hareket .sahne__doz {
    gap: 0.75rem;
    padding-bottom: 2.5rem;
    align-content: start;
  }

  .hareket .sahne__doz .soz blockquote p {
    font-size: 2.3rem;
  }

  .hareket .deney__acik {
    display: none;
  }

  .deney__alan {
    order: -1;
    aspect-ratio: 4 / 3;
  }

  .hareket .deney__alan {
    order: -1;
    aspect-ratio: auto;
    height: 32svh;
  }

  .deney__kontrol {
    margin-top: 0.75rem;
  }

  .deney__okuma {
    margin-top: 0.5rem;
  }

  .deney__okuma dd {
    font-size: 1.6rem;
  }
}

/* ---------- Prospektüs: hizmetler ---------- */
/* Kâğıt, mürekkebin üstüne serilir: yuvarlak üst kenarlı bir yaprak gibi. */
.prospektus {
  position: relative;
  z-index: 2;
  margin-top: calc(-1 * clamp(1.5rem, 4vw, 3rem));
  padding-block: clamp(5rem, 12vw, 10rem) clamp(4rem, 10vw, 8rem);
  border-radius: clamp(24px, 4vw, 48px) clamp(24px, 4vw, 48px) 0 0;
  box-shadow: 0 -30px 60px -30px rgba(0, 0, 0, 0.45);
}

.prospektus__bas {
  display: grid;
  grid-template-columns: 1fr minmax(0, 26rem);
  gap: 2rem 4rem;
  align-items: end;
  margin-bottom: clamp(3rem, 7vw, 5rem);
}

.prospektus__bas p:last-child {
  color: var(--soluk);
}

.prospektus__kagit {
  position: relative;
  perspective: 1800px;
  max-width: 54rem;
  margin-inline: auto;
}

.kanat {
  position: relative;
  display: grid;
  grid-template-columns: 8.5rem 1fr;
  gap: 0.5rem 2rem;
  padding: 2rem clamp(1.25rem, 3vw, 2.5rem);
  background: #f7f9f8;
  border: 1px solid var(--cizgi);
  border-top: 0;
  color: var(--yazi-kagit);
  transform-origin: 50% 0;
  transform: rotateX(calc(var(--kat, 0) * -94deg));
  transform-style: preserve-3d;
  backface-visibility: hidden;
}

/* katlama izi: her kanadın üst kenarında ince bir kırışık */
.kanat::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 10px;
  background: linear-gradient(rgba(12, 31, 58, 0.08), transparent);
  pointer-events: none;
}

/* katlanırken kanat kararır */
.kanat::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(12, 31, 58, 0.55), rgba(12, 31, 58, 0.2));
  opacity: var(--kat, 0);
  pointer-events: none;
}

.kanat--kapak {
  border-top: 1px solid var(--cizgi);
  border-radius: var(--kose) var(--kose) 0 0;
  grid-template-columns: 1fr auto;
  align-items: center;
  padding-block: 1.25rem;
}

.kanat--son {
  border-radius: 0 0 var(--kose) var(--kose);
  grid-template-columns: 1fr auto;
  align-items: center;
}

.kanat .kanat__sure {
  grid-column: 1;
  grid-row: 1 / span 2;
  align-self: start;
  justify-self: start;
  color: var(--yazi-kagit);
  padding: 0.2rem 0.6rem;
  border: 1px solid var(--cizgi);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.kanat h3 {
  grid-column: 2;
  font-family: var(--serif);
  font-weight: 400;
  font-size: var(--orta);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.kanat p {
  grid-column: 2;
  max-width: 36rem;
  color: var(--soluk-kagit);
}

.kanat--kapak p,
.kanat--son p {
  grid-column: auto;
}

.ok-baglanti {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.75rem 1.25rem;
  border-radius: 999px;
  background: var(--murekkep);
  color: var(--yazi-murekkep);
  font-weight: 550;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.3s var(--yavas), transform 0.3s var(--yavas);
}

.ok-baglanti::after {
  content: "→";
  transition: transform 0.3s var(--yavas);
}

.ok-baglanti:hover {
  background: var(--donum-koyu);
}

.ok-baglanti:hover::after {
  transform: translateX(4px);
}

@media (max-width: 40rem) {
  .prospektus__bas {
    grid-template-columns: 1fr;
  }

  .kanat {
    grid-template-columns: 1fr;
  }

  .kanat p,
  .kanat h3,
  .kanat .kanat__sure {
    grid-column: 1;
    grid-row: auto;
  }

  .kanat--kapak,
  .kanat--son {
    grid-template-columns: 1fr;
  }
}

/* ---------- Yöntem: dört adım ---------- */
.yontem {
  padding-block: clamp(4rem, 10vw, 8rem);
}

.yontem__liste {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 2rem;
  margin-top: clamp(2.5rem, 6vw, 4.5rem);
  counter-reset: adim;
}

/* Adımları bağlayan çizgi rakamların altından geçer; ucunda pembe bir nokta ilerler. */
.yontem__liste::before {
  content: "";
  position: absolute;
  top: 4.4rem;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--yazi);
  opacity: 0.35;
  transform-origin: left;
  transform: scaleX(var(--cizgi-ilerleme, 1));
}

.yontem__liste li {
  position: relative;
  counter-increment: adim;
  padding-top: 5.4rem;
}

.yontem__liste li::before {
  content: counter(adim);
  position: absolute;
  top: 0;
  left: 0;
  font-family: var(--serif);
  font-size: 4rem;
  line-height: 1;
  color: var(--yazi);
}

.yontem__liste li::after {
  content: "";
  position: absolute;
  top: calc(4.4rem - 4px);
  left: 0;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--zemin);
  border: 1px solid var(--yazi);
}

.yontem__liste li:last-child::after {
  background: var(--donum-koyu);
  border-color: var(--donum-koyu);
}

.yontem__liste li:last-child::before {
  color: var(--donum-koyu);
  font-style: italic;
}

.yontem__liste h3 {
  margin-top: 1.25rem;
  font-size: 1.125rem;
  font-weight: 600;
}

.yontem__liste p {
  margin-top: 0.4rem;
  color: var(--soluk);
}

@media (max-width: 52rem) {
  .yontem__liste {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .yontem__liste::before {
    top: 0.5rem;
    bottom: 2.5rem;
    left: 4px;
    right: auto;
    width: 1px;
    height: auto;
    transform-origin: top;
    transform: scaleY(var(--cizgi-ilerleme, 1));
  }

  .yontem__liste li {
    padding: 0 0 2.5rem 4.5rem;
    min-height: 6rem;
  }

  .yontem__liste li::before {
    left: 1.5rem;
    font-size: 2.6rem;
  }

  .yontem__liste li::after {
    top: 0.9rem;
  }

  .yontem__liste h3 {
    margin-top: 0;
    padding-left: 2rem;
  }

  .yontem__liste p {
    padding-left: 2rem;
  }
}

/* ---------- Kısa Şirket Bilgisi ---------- */
.ksb-bolum {
  padding-block: 0 clamp(4rem, 10vw, 8rem);
}

.ksb {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 2rem clamp(2rem, 6vw, 6rem);
}

.ksb > div:first-child {
  position: sticky;
  top: calc(var(--ust-yukseklik) + 2rem);
  align-self: start;
}

.ksb__acik {
  margin-top: 1.25rem;
  color: var(--soluk);
}

.ksb__kart {
  padding: clamp(1.5rem, 3vw, 2.5rem);
  background: #f7f9f8;
  border: 1px solid var(--cizgi);
  border-radius: var(--kose);
  box-shadow: 0 30px 60px -40px rgba(12, 31, 58, 0.35);
}

.ksb__kart h3 {
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--yazi);
  font-family: var(--mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.ksb__kart ol {
  counter-reset: madde;
}

.ksb__kart li {
  counter-increment: madde;
  display: grid;
  grid-template-columns: 2rem 11rem 1fr;
  gap: 0.25rem 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--cizgi);
}

.ksb__kart li::before {
  content: counter(madde) ".";
  font-family: var(--mono);
  font-size: 0.8125rem;
  color: var(--soluk);
  padding-top: 0.15rem;
}

.ksb__kart li:last-child {
  border-bottom: 0;
}

.ksb__kart .alan {
  font-weight: 600;
  font-size: 0.9375rem;
}

.ksb__kart .deger {
  color: var(--soluk);
  overflow-wrap: anywhere;
}

@media (max-width: 52rem) {
  .ksb {
    grid-template-columns: 1fr;
  }

  .ksb > div:first-child {
    position: static;
  }

  .ksb__kart li {
    grid-template-columns: 2rem 1fr;
  }

  .ksb__kart .deger {
    grid-column: 2;
  }
}

/* ---------- Ürünler ---------- */
.raf {
  padding-block: clamp(4rem, 10vw, 7rem);
  border-top: 1px solid var(--cizgi);
}

.raf__ic {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
  gap: 2rem 4rem;
  align-items: end;
}

.raf__bos {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.raf__bos span {
  flex: 1;
  height: 7rem;
  border: 1px dashed var(--cizgi);
  border-radius: var(--kose);
}

.raf__ic p {
  color: var(--soluk);
  max-width: 34rem;
}

@media (max-width: 52rem) {
  .raf__ic {
    grid-template-columns: 1fr;
  }
}

/* ---------- Alt bilgi ---------- */
.alt {
  position: relative;
  overflow: hidden;
  padding-top: clamp(5rem, 12vw, 10rem);
}

.alt__cagri .tez {
  font-size: var(--dev);
  line-height: 0.9;
}

.alt__eposta {
  margin-top: 2rem;
  font-size: clamp(1.25rem, 1rem + 1vw, 1.75rem);
}

.alt__izgara {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-top: clamp(4rem, 10vw, 7rem);
  padding-block: 2.5rem;
  border-top: 1px solid var(--cizgi);
  font-size: 0.9375rem;
}

.alt__izgara h2 {
  margin-bottom: 1rem;
}

.alt dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.4rem 1.25rem;
}

.alt dt {
  color: var(--soluk);
}

.alt dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.alt__sayfalar a {
  display: block;
  padding: 0.15rem 0;
  text-decoration: none;
}

.alt__sayfalar a:hover {
  text-decoration: underline;
}

.alt__durust {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.5rem 3.5rem;
  border-top: 1px solid var(--cizgi);
  color: var(--soluk);
  font-size: var(--kucuk);
}

.alt__iz {
  font-family: var(--serif);
  font-size: clamp(5rem, 22vw, 22rem);
  line-height: 0.75;
  letter-spacing: -0.04em;
  color: transparent;
  -webkit-text-stroke: 1px rgba(234, 240, 245, 0.16);
  white-space: nowrap;
  user-select: none;
  margin-bottom: -0.12em;
  text-align: center;
}

@media (max-width: 52rem) {
  .alt__izgara {
    grid-template-columns: 1fr;
  }

  .alt dl {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .alt dd {
    margin-bottom: 0.6rem;
  }
}

/* ---------- Doz cetveli: ilerleme ---------- */
.cetvel {
  --cetvel-yazi: rgba(234, 240, 245, 0.5);
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  height: 14px;
  color: var(--cetvel-yazi);
  pointer-events: none;
  background:
    repeating-linear-gradient(to right, currentColor 0 1px, transparent 1px 10%) 0 100% / 100% 10px no-repeat,
    repeating-linear-gradient(to right, currentColor 0 1px, transparent 1px 1%) 0 100% / 100% 5px no-repeat;
  opacity: 0.7;
}

html[data-alt-tema="kagit"] .cetvel {
  --cetvel-yazi: rgba(12, 31, 58, 0.45);
}

.cetvel__dolu {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--donum);
  transform-origin: left;
  transform: scaleX(var(--ilerleme, 0));
  box-shadow: 0 0 10px rgba(255, 79, 139, 0.7);
}

html:not(.js) .cetvel {
  display: none;
}

/* ---------- Yardımcı: Doz ---------- */
.yardimci {
  position: fixed;
  right: clamp(0.75rem, 2vw, 1.5rem);
  bottom: 1.6rem;
  z-index: 70;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.6rem;
  touch-action: none;
}

html:not(.js) .yardimci {
  display: none;
}

.yardimci__karakter {
  position: relative;
  width: 4.25rem;
  height: 4.25rem;
  padding: 0;
  border: 0;
  background: none;
  cursor: grab;
}

.yardimci__karakter:active {
  cursor: grabbing;
}

.yardimci__karakter svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.hareket .yardimci__govde {
  animation: yuz 4.2s ease-in-out infinite;
  transform-origin: 50% 60%;
}

.hareket .yardimci__goz {
  animation: kirp 5.5s infinite;
  transform-box: fill-box;
  transform-origin: center;
}

.yardimci[data-uyku] .yardimci__goz {
  animation: none;
  transform: scaleY(0.12);
}

.yardimci[data-uyku] .yardimci__govde {
  animation-duration: 7s;
}

.yardimci__golge {
  transform-box: fill-box;
  transform-origin: center;
}

.hareket .yardimci__golge {
  animation: golge 4.2s ease-in-out infinite;
}

@keyframes yuz {
  50% {
    transform: translateY(-6px) rotate(-4deg);
  }
}

@keyframes golge {
  50% {
    transform: scale(0.8);
    opacity: 0.5;
  }
}

@keyframes kirp {
  0%, 92%, 100% {
    transform: scaleY(1);
  }
  95% {
    transform: scaleY(0.1);
  }
}

.yardimci__balon {
  max-width: 15rem;
  padding: 0.65rem 0.9rem;
  border-radius: 16px 16px 4px 16px;
  background: var(--kagit);
  color: var(--murekkep);
  font-size: 0.875rem;
  line-height: 1.4;
  box-shadow: 0 12px 30px -12px rgba(0, 0, 0, 0.5);
  opacity: 0;
  transform: translateY(8px) scale(0.96);
  transform-origin: 100% 100%;
  pointer-events: none;
}

.yardimci__balon.gorunur {
  opacity: 1;
  transform: none;
  transition: opacity 0.35s var(--yavas), transform 0.5s var(--yavas);
}

.yardimci__panel {
  width: min(24rem, calc(100vw - 1.5rem));
  /* 42rem: İngilizcedeki altı öneri telefonda tek sütuna düşünce karşılama metni kesilmesin (9 Kasım 2026). */
  max-height: min(42rem, calc(100svh - 7rem));
  display: flex;
  flex-direction: column;
  border-radius: 22px;
  background: var(--murekkep-2);
  color: var(--yazi-murekkep);
  border: 1px solid rgba(234, 240, 245, 0.14);
  box-shadow: 0 40px 80px -30px rgba(0, 0, 0, 0.7);
  overflow: hidden;
  transform-origin: 100% 100%;
}

.yardimci__panel[hidden] {
  display: none;
}

.yardimci__bas {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.2rem 1rem;
  padding: 1rem 1.1rem 0.9rem;
  border-bottom: 1px solid rgba(234, 240, 245, 0.1);
}

.yardimci__ad {
  font-family: var(--serif);
  font-size: 1.6rem;
  line-height: 1;
}

.yardimci__not {
  grid-column: 1;
  font-size: 0.75rem;
  color: var(--soluk-murekkep);
}

.yardimci__kapat {
  grid-row: 1 / span 2;
  grid-column: 2;
  align-self: start;
  width: 2.25rem;
  height: 2.25rem;
  border: 1px solid rgba(234, 240, 245, 0.18);
  border-radius: 50%;
  background: none;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}

.yardimci__akis {
  flex: 1;
  overflow-y: auto;
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  scroll-behavior: smooth;
}

.mesaj {
  max-width: 88%;
  padding: 0.65rem 0.85rem;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.45;
}

.mesaj p + p,
.mesaj p + ul,
.mesaj ul + p {
  margin-top: 0.45rem;
}

.mesaj ul {
  padding-left: 1.1rem;
}

.mesaj a {
  color: var(--donum);
}

.mesaj--doz {
  align-self: flex-start;
  background: rgba(234, 240, 245, 0.07);
  border-bottom-left-radius: 4px;
}

.mesaj--siz {
  align-self: flex-end;
  background: var(--donum);
  color: #1a0710;
  border-bottom-right-radius: 4px;
}

.mesaj--yaziyor {
  display: inline-flex;
  gap: 0.3rem;
}

.mesaj--yaziyor span {
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: var(--soluk-murekkep);
  animation: nokta 1s infinite;
}

.mesaj--yaziyor span:nth-child(2) {
  animation-delay: 0.15s;
}

.mesaj--yaziyor span:nth-child(3) {
  animation-delay: 0.3s;
}

@keyframes nokta {
  50% {
    transform: translateY(-3px);
    opacity: 0.4;
  }
}

.yardimci__oneriler {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0 1.1rem 0.8rem;
}

.yardimci__oneriler button {
  padding: 0.4rem 0.75rem;
  border: 1px solid rgba(234, 240, 245, 0.2);
  border-radius: 999px;
  background: none;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: background-color 0.2s, border-color 0.2s;
}

.yardimci__oneriler button:hover {
  border-color: var(--donum);
  background: rgba(255, 79, 139, 0.1);
}

.yardimci__yaz {
  display: flex;
  gap: 0.5rem;
  padding: 0.75rem 1.1rem;
  border-top: 1px solid rgba(234, 240, 245, 0.1);
}

.yardimci__yaz input {
  flex: 1;
  min-width: 0;
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(234, 240, 245, 0.18);
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.15);
}

.yardimci__yaz input::placeholder {
  color: var(--soluk-murekkep);
}

.yardimci__yaz button {
  padding: 0.55rem 0.95rem;
  border: 0;
  border-radius: 999px;
  background: var(--yazi-murekkep);
  color: var(--murekkep);
  font-weight: 600;
  cursor: pointer;
}

.yardimci__ayak {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  padding: 0 1.1rem 0.9rem;
}

.yardimci__ayak button {
  padding: 0.3rem 0.7rem;
  border: 0;
  background: none;
  color: var(--soluk-murekkep);
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

.yardimci__ayak button:hover {
  color: var(--yazi-murekkep);
}

.yardimci__geri {
  display: none;
  padding: 0.5rem 0.85rem;
  border: 1px solid rgba(234, 240, 245, 0.2);
  border-radius: 999px;
  background: var(--murekkep-2);
  font-family: var(--mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
}

.yardimci[data-gizli] .yardimci__karakter,
.yardimci[data-gizli] .yardimci__balon {
  display: none;
}

.yardimci[data-gizli] .yardimci__geri {
  display: inline-block;
}

/* Bölünmüş metin (site.js bol): kelime kırılmaz, parça kendi kutusunda kırpılır.
   Kutu dikeyde biraz genişletilir ki ü, ğ, İ gibi harflerin işaretleri kesilmesin. */
.kelime {
  display: inline-block;
  white-space: nowrap;
}

.kap {
  display: inline-block;
  overflow: clip;
  padding: 0.14em 0.05em;
  margin: -0.14em -0.05em;
  vertical-align: bottom;
}

.parca {
  display: inline-block;
}

/* Giriş: başlık harflere bölünene kadar gizli; özet ve ok sonra gelir.
   site.js çalışmazsa basla.js "hareket" sınıfını kaldırır ve hepsi görünür olur. */
.hareket .sahne .dev:not(.bolundu) {
  visibility: hidden;
}

.hareket .sahne__ozet,
.hareket .sahne__asagi {
  opacity: 0;
}

/* ---------- Ortaya çıkış (yalnız hareket açıkken; JS hazır değilse görünür kalır) ---------- */
.hareket:not(.yedek) [data-belir] {
  opacity: 0;
  transform: translate3d(0, 28px, 0);
}

.hareket [data-belir].belirdi {
  opacity: 1;
  transform: none;
  transition: opacity 0.9s var(--yavas), transform 1.1s var(--yavas);
  transition-delay: var(--gecikme, 0s);
}

/* ---------- Sayfa geçişleri ---------- */
@view-transition {
  navigation: auto;
}

::view-transition-old(root) {
  animation: 0.35s var(--yavas) both cik;
}

::view-transition-new(root) {
  animation: 0.6s var(--yavas) both gir;
}

@keyframes cik {
  to {
    opacity: 0;
    transform: translateY(-12px);
  }
}

@keyframes gir {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
}

/* ---------- Az hareket tercihi ---------- */
@media (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: none;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- İç sayfalar: koyu sayfa başı ---------- */
.sayfa-bas {
  position: relative;
  overflow: hidden;
  min-height: 74vh;
  min-height: 74svh;
  display: flex;
  align-items: flex-end;
  background:
    radial-gradient(50rem 32rem at 78% 30%, rgba(41, 88, 150, 0.45), transparent 70%),
    radial-gradient(36rem 26rem at 8% 100%, rgba(255, 79, 139, 0.07), transparent 70%),
    var(--murekkep);
}

.mini-sahne {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

html:not(.js) .mini-sahne {
  display: none;
}

.hareket .mini-sahne {
  animation: tuval-belir 1.8s var(--yavas) both;
}

@keyframes tuval-belir {
  from {
    opacity: 0;
  }
}

.sayfa-bas__ic {
  position: relative;
  display: grid;
  gap: 1.4rem;
  padding-top: calc(var(--ust-yukseklik) + 3rem);
  padding-bottom: clamp(5rem, 12vh, 8rem);
}

.dev--sayfa {
  font-size: clamp(3rem, 1.4rem + 6vw, 8rem);
  max-width: 12ch;
}

.sayfa-bas__ozet {
  max-width: 36rem;
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.25rem);
  color: var(--soluk);
}

/* Koyu bölümün üstüne serilen ilk kâğıt bölüm */
.kagit-yaprak {
  position: relative;
  z-index: 2;
  margin-top: calc(-1 * clamp(1.5rem, 4vw, 3rem));
  border-radius: clamp(24px, 4vw, 48px) clamp(24px, 4vw, 48px) 0 0;
  box-shadow: 0 -30px 60px -30px rgba(0, 0, 0, 0.45);
}

.bolum {
  padding-block: clamp(4rem, 10vw, 8rem);
}

.bolum--yakin {
  padding-top: 0;
}

.bolum__bas {
  display: grid;
  gap: 1rem;
  max-width: 46rem;
  margin-bottom: clamp(2.5rem, 6vw, 4rem);
}

/* ---------- Hizmetler sayfası: çalışma ilkeleri ---------- */
.ilkeler {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 21rem), 1fr));
  border-top: 1px solid var(--cizgi);
}

.ilkeler li {
  display: grid;
  grid-template-columns: 1.5rem 1fr;
  gap: 0.75rem;
  padding: 1.4rem 1.5rem 1.4rem 0;
  border-bottom: 1px solid var(--cizgi);
}

.ilkeler li::before {
  content: "";
  width: 0.6rem;
  height: 0.6rem;
  margin-top: 0.55rem;
  border-radius: 50%;
  border: 1px solid var(--yazi);
}

/* ---------- İletişim ---------- */
.iletisim__ic {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 3rem clamp(2rem, 6vw, 6rem);
  align-items: start;
}

.iletisim__eposta {
  margin: 1rem 0 1.5rem;
  font-family: var(--serif);
  font-size: var(--buyuk);
  line-height: 1;
}

.iletisim__eposta .yer-tutucu {
  font-size: 0.36em;
  vertical-align: middle;
}

.iletisim__not {
  max-width: 30rem;
  color: var(--soluk);
}

.ksb__kart dl {
  display: grid;
  grid-template-columns: 11rem 1fr;
}

.ksb__kart dt,
.ksb__kart dd {
  margin: 0;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--cizgi);
}

.ksb__kart dt {
  padding-right: 1rem;
  font-weight: 600;
  font-size: 0.9375rem;
}

.ksb__kart dd {
  color: var(--soluk);
  overflow-wrap: anywhere;
}

.ksb__kart dt:last-of-type,
.ksb__kart dd:last-of-type {
  border-bottom: 0;
}

/* ---------- Hakkımızda: kurucu ve bağımsızlık ---------- */
.kurucu {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 2rem clamp(2rem, 6vw, 6rem);
  padding-top: clamp(3rem, 8vw, 6rem);
  border-top: 1px solid var(--cizgi);
}

.kurucu__metin {
  display: grid;
  gap: 2.5rem;
}

.kurucu__metin h3 {
  margin-bottom: 0.6rem;
}

.kurucu__ad {
  font-family: var(--serif);
  font-size: var(--orta);
  line-height: 1.1;
}

.kurucu__metin p {
  max-width: 40rem;
  color: var(--soluk);
}

/* ---------- 404 ---------- */
.yok {
  position: relative;
  overflow: hidden;
  min-height: 100vh;
  min-height: 100svh;
  display: flex;
  align-items: center;
  background:
    radial-gradient(50rem 32rem at 75% 35%, rgba(41, 88, 150, 0.45), transparent 70%),
    var(--murekkep);
}

.yok__ic {
  position: relative;
  display: grid;
  gap: 1.25rem;
  padding-block: calc(var(--ust-yukseklik) + 4rem) 4rem;
}

.yok__ic h2 {
  margin-top: 2rem;
  font-family: var(--serif);
  font-size: var(--orta);
  font-weight: 400;
}

.yok__ic p {
  color: var(--soluk);
}

@media (max-width: 52rem) {
  .iletisim__ic,
  .kurucu {
    grid-template-columns: 1fr;
  }

  .ksb__kart dl {
    grid-template-columns: 1fr;
  }

  .ksb__kart dt {
    padding-bottom: 0;
    border-bottom: 0;
  }
}

.raf__not {
  margin: 1rem 0 1.5rem;
  max-width: 40rem;
  color: var(--soluk);
}

/* ---------- Ana sayfa: üç kapı ---------- */
.kapilar {
  padding-block: clamp(5rem, 12vw, 9rem) clamp(2rem, 6vw, 4rem);
}

.kapilar__liste {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.kapi {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  height: 100%;
  min-height: 19rem;
  padding: 1.75rem;
  border: 1px solid var(--cizgi);
  border-radius: var(--kose);
  background: #f7f9f8;
  color: inherit;
  text-decoration: none;
  transition: transform 0.5s var(--yavas), box-shadow 0.5s var(--yavas), border-color 0.3s;
}

.kapi:hover {
  transform: translateY(-4px);
  border-color: rgba(194, 24, 91, 0.45);
  box-shadow: 0 30px 60px -40px rgba(12, 31, 58, 0.45);
}

.kapi .glif {
  margin-bottom: 0.75rem;
}

.kapi__baslik {
  font-family: var(--serif);
  font-size: var(--orta);
  line-height: 1.05;
  letter-spacing: -0.01em;
}

.kapi__metin {
  color: var(--soluk);
}

.kapi__ok {
  margin-top: auto;
  font-size: 1.4rem;
  transition: transform 0.4s var(--yavas), color 0.3s;
}

.kapi:hover .kapi__ok {
  transform: translateX(6px);
  color: var(--donum-koyu);
}

/* Koyu bölümün ardından gelmeyen prospektüs düz başlar. */
.prospektus--duz {
  margin-top: 0;
  border-radius: 0;
  box-shadow: none;
  padding-top: clamp(3rem, 8vw, 6rem);
}

/* ---------- Çizgi işaretleri: görünür olunca kendini çizer ---------- */
.glif {
  flex: none;
  width: 3.25rem;
  height: 3.25rem;
  color: var(--vurgu);
  overflow: visible;
}

.glif path,
.glif rect,
.glif circle {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.hareket .glif path,
.hareket .glif rect,
.hareket .glif circle {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.6s var(--yavas);
}

.hareket .glif > :nth-child(2) {
  transition-delay: 0.15s;
}

.hareket .glif > :nth-child(3) {
  transition-delay: 0.3s;
}

.hareket .glif > :nth-child(n + 4) {
  transition-delay: 0.45s;
}

.hareket .belirdi .glif path,
.hareket .belirdi .glif rect,
.hareket .belirdi .glif circle {
  stroke-dashoffset: 0;
}

/* ---------- Hizmetler: iş birliği alanları ---------- */
.alanlar {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.alan-kart {
  display: grid;
  grid-template-columns: auto 1fr;
  align-content: start;
  gap: 0.35rem 1.4rem;
  padding: 1.75rem;
  border: 1px solid var(--cizgi);
  border-radius: var(--kose);
  background: #f7f9f8;
}

.alan-kart .glif {
  grid-row: 1 / span 3;
}

.alan-kart h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.6rem;
  line-height: 1.1;
}

.alan-kart__metin {
  color: var(--soluk);
}

.alanlar__not {
  max-width: 46rem;
  margin-top: 1.75rem;
  color: var(--soluk);
  font-size: 0.9375rem;
}

/* ---------- Dijital çözümler ---------- */
.dijital {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.25rem;
}

.dijital-kart {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1.75rem;
  border: 1px solid var(--cizgi);
  border-radius: var(--kose);
  background: #f7f9f8;
}

.dijital-kart h3 {
  font-family: var(--serif);
  font-weight: 400;
  font-size: 1.55rem;
  line-height: 1.1;
}

.dijital-kart__metin {
  color: var(--soluk);
  font-size: 0.97rem;
}

.dijital-kart__alt {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--cizgi);
}

.durum {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--cizgi);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.durum::before {
  content: "";
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 50%;
  background: var(--yazi);
  opacity: 0.55;
}

.hareket .durum::before {
  animation: nabiz 2.4s ease-in-out infinite;
}

@keyframes nabiz {
  50% {
    opacity: 0.15;
  }
}

/* ---------- Ar-Ge: molekülden peteğe ---------- */
.petek {
  --w: 17.5rem;
  --h: calc(var(--w) * 1.1547);
  --altigen: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  display: grid;
  grid-template-columns: repeat(6, calc(var(--w) / 2));
  grid-auto-rows: calc(var(--h) * 0.75);
  justify-content: center;
  margin: 0;
  padding: 0 0 calc(var(--h) * 0.25);
  list-style: none;
}

.goz {
  position: relative;
  width: var(--w);
  height: var(--h);
}

.goz:nth-child(1) { grid-column: 1 / span 2; grid-row: 1; }
.goz:nth-child(2) { grid-column: 3 / span 2; grid-row: 1; }
.goz:nth-child(3) { grid-column: 5 / span 2; grid-row: 1; }
.goz:nth-child(4) { grid-column: 2 / span 2; grid-row: 2; }
.goz:nth-child(5) { grid-column: 4 / span 2; grid-row: 2; }

.goz::before {
  content: "";
  position: absolute;
  inset: 4px;
  clip-path: var(--altigen);
  background: rgba(12, 31, 58, 0.28);
  transition: background-color 0.4s var(--yavas);
}

.goz__ic {
  position: absolute;
  inset: 5.5px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 22% 15%;
  clip-path: var(--altigen);
  background: #f7f9f8;
  text-align: center;
  transition: background-color 0.4s var(--yavas);
}

.goz__ic p {
  font-family: var(--serif);
  font-size: 1.15rem;
  line-height: 1.15;
}

.goz__ic small {
  font-size: 0.75rem;
  line-height: 1.35;
  color: var(--soluk);
}

.goz:hover::before {
  background: var(--donum-koyu);
}

.goz:hover .goz__ic {
  background: #ffffff;
}

.petek__not {
  max-width: 46rem;
  margin: 1rem auto 0;
  text-align: center;
  color: var(--soluk);
  font-size: 0.9375rem;
}

/* Genel ul[class] sıfırlaması alt boşluğu ezmesin: son sıradaki altıgenler satırdan taşar. */
ul.petek {
  padding: 0 0 calc(var(--h) * 0.25);
}

/* Toplanma hareketi (site.js): başta görünmez; betik çalışmazsa basla.js hareket sınıfını kaldırır. */
.hareket [data-petek]:not(.toplandi) .goz {
  opacity: 0;
}

@media (max-width: 64rem) {
  .dijital {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 60rem) {
  .petek {
    --w: 16rem;
    grid-template-columns: repeat(4, calc(var(--w) / 2));
  }

  .goz:nth-child(1) { grid-column: 1 / span 2; grid-row: 1; }
  .goz:nth-child(2) { grid-column: 3 / span 2; grid-row: 1; }
  .goz:nth-child(3) { grid-column: 2 / span 2; grid-row: 2; }
  .goz:nth-child(4) { grid-column: 1 / span 2; grid-row: 3; }
  .goz:nth-child(5) { grid-column: 3 / span 2; grid-row: 3; }
}

@media (max-width: 52rem) {
  .kapilar__liste,
  .alanlar {
    grid-template-columns: 1fr;
  }

  .kapi {
    min-height: 0;
  }
}

@media (max-width: 40rem) {
  .dijital {
    grid-template-columns: 1fr;
  }

  .petek,
  ul.petek {
    grid-template-columns: 1fr;
    grid-auto-rows: auto;
    gap: 0.75rem;
    padding: 0;
  }

  .goz,
  .goz:nth-child(n) {
    grid-column: auto;
    grid-row: auto;
    width: auto;
    height: auto;
  }

  .goz::before {
    display: none;
  }

  .goz__ic {
    position: relative;
    inset: auto;
    align-items: flex-start;
    padding: 1.25rem 1.25rem 1.25rem 4.25rem;
    clip-path: none;
    text-align: left;
    border: 1px solid var(--cizgi);
    border-radius: var(--kose);
  }

  .goz__ic::before {
    content: "";
    position: absolute;
    left: 1.25rem;
    top: 1.25rem;
    width: 2rem;
    height: 2.3rem;
    clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
    background: var(--yazi);
    opacity: 0.82;
  }
}

@media (max-width: 30rem) {
  .alan-kart {
    grid-template-columns: 1fr;
  }

  .alan-kart .glif {
    grid-row: auto;
  }
}

/* Alt bilgideki tanıtım uyarısı tam satır kaplar. */
.alt__uyari {
  flex-basis: 100%;
  max-width: 60rem;
}

/* ---------- Türkiye: EN sayfa, TR ithalatçı bölümü ve EN ana sayfa şeridi (9 Kasım 2026) ---------- */
.kapilar__ek {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  margin-top: 1.25rem;
  padding: 1.35rem 1.75rem;
  border: 1px solid var(--cizgi);
  border-radius: var(--kose);
  background: #f7f9f8;
  color: inherit;
  text-decoration: none;
  transition: transform 0.5s var(--yavas), box-shadow 0.5s var(--yavas), border-color 0.3s;
}

.kapilar__ek:hover {
  transform: translateY(-3px);
  border-color: rgba(194, 24, 91, 0.45);
  box-shadow: 0 30px 60px -40px rgba(12, 31, 58, 0.45);
}

.kapilar__ek-soru {
  font-family: var(--serif);
  font-size: var(--orta);
  line-height: 1.1;
}

.kapilar__ek-ok {
  color: var(--soluk);
  transition: color 0.3s;
}

.kapilar__ek:hover .kapilar__ek-ok {
  color: var(--donum-koyu);
}

/* Üç olgu: sıra değil, yan yana olgular; son madde karar rengini (pembe) almaz. */
.yontem__giris {
  max-width: 46rem;
  margin-top: 1rem;
  color: var(--soluk);
}

.yontem__liste--uc {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.yontem__liste--uc li:last-child::before {
  color: var(--yazi);
  font-style: normal;
}

.yontem__liste--uc li:last-child::after {
  background: var(--zemin);
  border-color: var(--yazi);
}

.kaynaklar__etiket {
  margin-top: 1.5rem;
}

.kaynaklar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin-top: 0.6rem;
  font-size: 0.9375rem;
}

.kaynaklar a::after {
  content: " ↗" / "";
  color: var(--soluk);
}

.bolum__acik {
  max-width: 40rem;
  color: var(--soluk);
}

.bolum__dugme {
  margin-top: 2rem;
}

.cagri {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem 2rem;
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding-top: clamp(2rem, 4vw, 3rem);
  border-top: 2px solid var(--yazi);
}

.cagri p {
  max-width: 34ch;
  font-family: var(--serif);
  font-size: var(--orta);
  line-height: 1.15;
}

.ilkeler__cagri {
  max-width: 46rem;
  margin-top: 1.75rem;
}

.yurt-disindan {
  padding-top: clamp(3rem, 8vw, 6rem);
}

.ksb__kart--liste li {
  grid-template-columns: 2rem 1fr;
}

/* Soldaki metin uzun; kart onun boyuna uzamasın. */
.yurt-disindan .ksb__kart {
  align-self: start;
}

/* Dört madde: 3+1 yerine 2+2. */
.ilkeler--iki {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 28rem), 1fr));
}

.cipler__etiket {
  margin-top: 1.75rem;
}

.cipler {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.cipler li {
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--cizgi);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

@media (max-width: 52rem) {
  .yontem__liste--uc {
    grid-template-columns: 1fr;
  }
}

/* ---------- Ana sayfa: Türkiye özeti (EN) ve iş birliği alanları (iki dil), 9 Kasım 2026 ---------- */
/* Türkiye özeti kapıların hemen altında; üst boşluk kapıların alt boşluğuyla birleşir. */
.turkiye-ozet {
  padding-block: clamp(2rem, 6vw, 4rem);
}

.alan-ozet__etiket {
  margin-top: clamp(2rem, 5vw, 3rem);
}

.alan-ozet {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
  margin: 0.75rem 0 clamp(2.5rem, 6vw, 4rem);
}

.alan-ozet a {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  height: 100%;
  padding: 1.25rem 1.25rem 1.4rem;
  border: 1px solid var(--cizgi);
  border-radius: var(--kose);
  background: #f7f9f8;
  color: inherit;
  text-decoration: none;
  transition: transform 0.5s var(--yavas), box-shadow 0.5s var(--yavas), border-color 0.3s;
}

.alan-ozet a:hover {
  transform: translateY(-3px);
  border-color: rgba(194, 24, 91, 0.45);
  box-shadow: 0 30px 60px -40px rgba(12, 31, 58, 0.45);
}

.alan-ozet .glif {
  width: 2.5rem;
  height: 2.5rem;
}

.alan-ozet__baslik {
  font-family: var(--serif);
  font-size: 1.35rem;
  line-height: 1.1;
}

@media (max-width: 52rem) {
  .alan-ozet {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 36rem) {
  .alan-ozet {
    grid-template-columns: 1fr;
  }
}