/* Zumo web sitesi: yazı tipleri, keşif deneyimi (zk-) ve tanıtım sayfası (zs-) stilleri. */

@font-face {
  font-family: 'Fraunces';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/fraunces-latin-opsz-normal.woff2) format('woff2-variations');
  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: 'Fraunces';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/fraunces-latin-ext-opsz-normal.woff2) format('woff2-variations');
  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: 'Fraunces';
  font-style: italic;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/fraunces-latin-opsz-italic.woff2) format('woff2-variations');
  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: 'Fraunces';
  font-style: italic;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/fraunces-latin-ext-opsz-italic.woff2) format('woff2-variations');
  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: 'Inter';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-latin-wght-normal.woff2) format('woff2-variations');
  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: 'Inter';
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url(/fonts/inter-latin-ext-wght-normal.woff2) format('woff2-variations');
  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;
}

/* ================================================================ Keşif (zk-) */

.zk {
  --zk-yazi: #f6f0e6;
  --zk-soluk: rgba(246, 240, 230, 0.66);
  --zk-cok-soluk: rgba(246, 240, 230, 0.38);
  --zk-vurgu: #f2b660;
  --zk-cam: rgba(22, 18, 14, 0.46);
  --zk-cam-koyu: rgba(14, 11, 9, 0.72);
  --zk-cizgi: rgba(255, 244, 228, 0.16);
  position: fixed;
  inset: 0;
  overflow: hidden;
  /* clip: odaklanan bir öğe kabı programla kaydıramasın (ekran dışı etiketler). */
  overflow: clip;
  background: #1b1612;
  color: var(--zk-yazi);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  user-select: none;
  -webkit-user-select: none;
}
.zk * { box-sizing: border-box; }
.zk button { font: inherit; color: inherit; cursor: pointer; }
.zk-tuval { position: absolute; inset: 0; width: 100% !important; height: 100% !important; display: block; touch-action: none; }
.zk-serbest .zk-tuval { cursor: grab; }
.zk-serbest .zk-tuval:active { cursor: grabbing; }

.zk-vinyet {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(120% 90% at 50% 45%, transparent 55%, rgba(10, 8, 6, 0.45) 100%),
    linear-gradient(180deg, rgba(10, 8, 6, 0.55) 0%, transparent 18%, transparent 52%, rgba(10, 8, 6, 0.78) 100%);
  transition: opacity 0.8s;
}
.zk:not(.zk-basladi) .zk-vinyet {
  background:
    radial-gradient(120% 90% at 50% 45%, transparent 45%, rgba(10, 8, 6, 0.5) 100%),
    linear-gradient(90deg, rgba(12, 9, 7, 0.82) 0%, rgba(12, 9, 7, 0.35) 45%, transparent 70%);
}

.zk-ust-yazi {
  margin: 0 0 10px;
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--zk-vurgu);
}

/* Üst çubuk */
.zk-ust {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 24px;
  z-index: 5;
}
.zk-marka { display: flex; align-items: baseline; gap: 8px; text-decoration: none; color: var(--zk-yazi); }
.zk-marka-ad { font-family: 'Fraunces', Georgia, serif; font-size: 22px; font-weight: 600; letter-spacing: -0.01em; }
.zk-marka-alt { font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase; color: var(--zk-soluk); }
.zk-sekmeler {
  display: flex;
  gap: 2px;
  margin: 0 auto;
  padding: 4px;
  border-radius: 999px;
  background: var(--zk-cam);
  border: 1px solid var(--zk-cizgi);
  backdrop-filter: blur(14px) saturate(1.2);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  overflow-x: auto;
  scrollbar-width: none;
  max-width: calc(100vw - 340px);
}
.zk-sekmeler::-webkit-scrollbar { display: none; }
.zk-sekme {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 13px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  font-size: 13px;
  font-weight: 500;
  color: var(--zk-soluk) !important;
  white-space: nowrap;
  transition: background 0.25s, color 0.25s;
}
.zk-sekme:hover { color: var(--zk-yazi) !important; }
.zk-sekme.zk-etkin { background: rgba(255, 246, 232, 0.14); color: var(--zk-yazi) !important; }
.zk-sekme-no { font-size: 10px; letter-spacing: 0.08em; color: var(--zk-vurgu); font-variant-numeric: tabular-nums; }
.zk-ust-sag { display: flex; gap: 8px; margin-left: auto; }
.zk-ikon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid var(--zk-cizgi);
  background: var(--zk-cam);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: background 0.2s, transform 0.2s;
}
.zk-ikon:hover { background: rgba(255, 246, 232, 0.16); }
.zk-ikon:active { transform: scale(0.94); }

/* Açılış ve bitiş */
.zk-acilis, .zk-bitis {
  position: absolute;
  left: clamp(24px, 6vw, 96px);
  bottom: clamp(48px, 12vh, 140px);
  max-width: 620px;
  z-index: 4;
  animation: zk-belir 1.2s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.zk-bitis { bottom: auto; top: 50%; transform: translateY(-50%); animation-name: zk-belir-orta; }
.zk-dev-baslik {
  margin: 0;
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(56px, 10vw, 128px);
  font-weight: 500;
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-variation-settings: 'opsz' 144;
}
.zk-bitis-baslik { font-size: clamp(44px, 7vw, 88px); }
.zk-acilis-alt { margin: 22px 0 0; font-size: clamp(16px, 1.6vw, 19px); line-height: 1.55; color: var(--zk-soluk); max-width: 520px; }
.zk-acilis-dugmeler { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.zk-acilis-meta { margin: 22px 0 0; font-size: 12.5px; letter-spacing: 0.06em; color: var(--zk-cok-soluk); }
.zk-dugme {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid var(--zk-cizgi);
  background: var(--zk-cam);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  font-size: 15px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s, opacity 0.2s;
}
.zk-dugme:hover { background: rgba(255, 246, 232, 0.16); }
.zk-dugme:active { transform: scale(0.97); }
.zk-dugme:disabled { opacity: 0.55; cursor: default; }
.zk-dugme-ana { background: var(--zk-yazi); color: #1d1712 !important; border-color: transparent; }
.zk-dugme-ana:hover { background: #fff; }
.zk-dugme-kucuk { height: 40px; padding: 0 16px; font-size: 13px; }
.zk-dugme.zk-etkin { background: var(--zk-vurgu); color: #1d1712 !important; border-color: transparent; }

/* Altyazı */
.zk-altyazi {
  position: absolute;
  left: clamp(20px, 4vw, 56px);
  bottom: 112px;
  max-width: min(680px, calc(100vw - 260px));
  z-index: 3;
  pointer-events: none;
}
.zk-baslik {
  margin: 0;
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(32px, 4.4vw, 56px);
  font-weight: 500;
  line-height: 1.02;
  letter-spacing: -0.025em;
  font-variation-settings: 'opsz' 96;
  animation: zk-belir 0.9s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.zk-satir {
  margin: 16px 0 0;
  font-size: clamp(16px, 1.5vw, 19px);
  line-height: 1.55;
  color: rgba(246, 240, 230, 0.86);
  max-width: 600px;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.35);
  animation: zk-belir 0.7s ease both;
}
.zk-serbest-ipucu .zk-satir { font-size: 15px; color: var(--zk-soluk); }

/* Dönem ölçeği */
.zk-olcek {
  position: absolute;
  right: clamp(20px, 3vw, 44px);
  top: 50%;
  transform: translateY(-50%);
  height: min(320px, 42vh);
  width: 170px;
  z-index: 3;
}
.zk-olcek-ray { position: absolute; right: 0; top: 0; bottom: 0; width: 1px; background: var(--zk-cizgi); }
.zk-olcek-isaret {
  position: absolute;
  right: -5px;
  width: 11px;
  height: 11px;
  margin-top: -5.5px;
  border-radius: 50%;
  background: var(--zk-vurgu);
  box-shadow: 0 0 0 4px rgba(242, 182, 96, 0.22), 0 0 18px rgba(242, 182, 96, 0.6);
  transition: top 0.25s linear;
}
.zk-olcek-durak {
  position: absolute;
  right: 18px;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 2px;
  padding: 4px 0;
  border: 0;
  background: transparent;
  text-align: right;
}
.zk-olcek-durak::after {
  content: '';
  position: absolute;
  right: -18px;
  top: 50%;
  width: 9px;
  height: 1px;
  background: var(--zk-cok-soluk);
}
.zk-olcek-ad { font-size: 13px; font-weight: 600; color: var(--zk-soluk); font-variant-numeric: tabular-nums; transition: color 0.3s; }
.zk-olcek-alt { font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--zk-cok-soluk); }
.zk-olcek-durak.zk-etkin .zk-olcek-ad, .zk-olcek-durak:hover .zk-olcek-ad { color: var(--zk-yazi); }

/* Etiketler (3D noktalara bağlı) */
.zk-etiket-katmani { position: absolute; inset: 0; pointer-events: none; z-index: 2; overflow: clip; }
.zk-etiket {
  position: absolute;
  left: 0;
  top: 0;
  padding: 0;
  border: 0;
  background: none;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s;
  will-change: transform;
}
.zk-etiket.zk-gorunur { opacity: 1; pointer-events: auto; }
.zk-etiket-nokta {
  position: absolute;
  left: -5px;
  top: -5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--zk-vurgu);
  box-shadow: 0 0 0 3px rgba(242, 182, 96, 0.28);
}
.zk-etiket-nokta::after {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: 50%;
  border: 1px solid rgba(242, 182, 96, 0.7);
  animation: zk-nabiz 2.2s ease-out infinite;
}
.zk-etiket-cizgi { position: absolute; left: 0; bottom: 6px; width: 1px; height: 46px; background: linear-gradient(0deg, rgba(242, 182, 96, 0.9), rgba(255, 244, 228, 0.5)); }
.zk-etiket-kutu {
  position: absolute;
  left: -2px;
  bottom: 52px;
  white-space: nowrap;
  padding: 7px 12px;
  border-radius: 10px;
  border: 1px solid var(--zk-cizgi);
  background: var(--zk-cam-koyu);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.2s;
}
.zk-etiket:hover .zk-etiket-kutu, .zk-etiket.zk-secili .zk-etiket-kutu { background: var(--zk-vurgu); color: #1d1712; }

/* Bilgi kartı */
.zk-kart {
  position: absolute;
  left: clamp(16px, 4vw, 56px);
  bottom: 112px;
  width: min(380px, calc(100vw - 32px));
  padding: 22px 22px 20px;
  border-radius: 20px;
  border: 1px solid var(--zk-cizgi);
  background: var(--zk-cam-koyu);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  z-index: 6;
  animation: zk-belir 0.45s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.zk-kart-kapat { position: absolute; top: 12px; right: 12px; width: 32px; height: 32px; }
.zk-kart-baslik { margin: 0; font-family: 'Fraunces', Georgia, serif; font-size: 28px; font-weight: 500; letter-spacing: -0.02em; }
.zk-kart-metin { margin: 10px 0 0; font-size: 15px; line-height: 1.6; color: rgba(246, 240, 230, 0.82); }

/* Oynatıcı çubuğu */
.zk-oynatici {
  position: absolute;
  left: 0;
  right: 0;
  margin: 0 auto;
  bottom: 22px;
  width: min(1080px, calc(100% - 32px));
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 12px 10px 10px;
  border-radius: 999px;
  border: 1px solid var(--zk-cizgi);
  background: var(--zk-cam);
  backdrop-filter: blur(18px) saturate(1.2);
  -webkit-backdrop-filter: blur(18px) saturate(1.2);
  z-index: 5;
  animation: zk-belir 0.8s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.zk-oynat { width: 44px; height: 44px; background: var(--zk-yazi); color: #1d1712 !important; border-color: transparent; flex: none; }
.zk-oynat:hover { background: #fff; }
.zk-ray { flex: 1; display: flex; gap: 4px; height: 36px; align-items: center; cursor: pointer; min-width: 0; }
.zk-ray-parca { position: relative; height: 4px; border-radius: 4px; background: rgba(255, 244, 228, 0.18); flex-basis: 0; min-width: 8px; }
.zk-ray-dolu { position: absolute; inset: 0; border-radius: 4px; background: var(--zk-yazi); transform-origin: left; }
.zk-ray-parca.zk-etkin .zk-ray-dolu { background: var(--zk-vurgu); }
.zk-ray-ad {
  position: absolute;
  left: 0;
  top: 10px;
  font-size: 10.5px;
  letter-spacing: 0.04em;
  color: var(--zk-cok-soluk);
  white-space: nowrap;
  overflow: hidden;
  max-width: 100%;
  text-overflow: ellipsis;
}
.zk-ray-parca.zk-etkin .zk-ray-ad { color: var(--zk-yazi); }
.zk-sure { font-size: 13px; font-variant-numeric: tabular-nums; white-space: nowrap; }
.zk-soluk { color: var(--zk-cok-soluk); }
.zk-hizlar { display: flex; gap: 2px; padding: 3px; border-radius: 999px; background: rgba(0, 0, 0, 0.18); }
.zk-hiz { border: 0; background: transparent; padding: 6px 9px; border-radius: 999px; font-size: 12px; font-weight: 600; color: var(--zk-soluk) !important; }
.zk-hiz.zk-etkin { background: rgba(255, 246, 232, 0.16); color: var(--zk-yazi) !important; }

/* Telefonda serbest gezintide dönem seçimi (masaüstünde sağdaki ölçek var) */
.zk-donem-cipleri {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 82px;
  display: none;
  justify-content: center;
  gap: 6px;
  z-index: 5;
}
.zk-donem-cip {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--zk-cizgi);
  background: var(--zk-cam-koyu);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}
.zk-donem-cip.zk-etkin { background: var(--zk-vurgu); color: #1d1712 !important; border-color: transparent; }

@keyframes zk-belir { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes zk-belir-orta { from { opacity: 0; transform: translateY(calc(-50% + 14px)); } to { opacity: 1; transform: translateY(-50%); } }
@keyframes zk-nabiz { from { transform: scale(0.6); opacity: 1; } to { transform: scale(1.8); opacity: 0; } }

@media (max-width: 900px) {
  .zk-sekmeler { display: none; }
  .zk-olcek { width: 120px; height: min(220px, 30vh); top: 42%; }
  .zk-olcek-alt { display: none; }
  .zk-altyazi { max-width: calc(100vw - 40px); bottom: 104px; }
  .zk-hizlar { display: none; }
}
@media (max-width: 600px) {
  .zk-ust { padding: 14px 16px; }
  .zk-ikon { width: 36px; height: 36px; }
  .zk-olcek { display: none; }
  .zk-donem-cipleri { display: flex; gap: 4px; padding: 0 8px; }
  .zk-donem-cip { padding: 6px 9px; font-size: 11.5px; }
  .zk-serbest .zk-kart, .zk-serbest .zk-serbest-ipucu { bottom: 128px; }
  .zk-oynatici { gap: 10px; bottom: 12px; padding: 8px 10px 8px 8px; }
  .zk-oynatici .zk-dugme-kucuk { padding: 0 12px; }
  .zk-oynatici .zk-dugme-kucuk svg { display: none; }
  .zk-sure .zk-soluk { display: none; }
  .zk-ray-ad { display: none; }
  .zk-altyazi { bottom: 86px; }
  .zk-baslik { font-size: 30px; }
  .zk-satir { font-size: 15.5px; margin-top: 10px; }
  .zk-kart { bottom: 86px; }
  .zk-acilis { bottom: 40px; }
  .zk-etiket-kutu { font-size: 11.5px; padding: 6px 10px; }
  .zk-etiket-cizgi { height: 30px; }
  .zk-etiket-kutu { bottom: 36px; }
}
@media (prefers-reduced-motion: reduce) {
  .zk *, .zk *::after { animation: none !important; transition: none !important; }
}

/* ================================================================ Tanıtım sayfası (zs-) */

.zs {
  --zs-kagit: #f5efe4;
  --zs-kagit-koyu: #ece3d3;
  --zs-beyaz: #fffcf6;
  --zs-murekkep: #1d1a16;
  --zs-soluk: #6c6458;
  --zs-cizgi: rgba(29, 26, 22, 0.1);
  --zs-vurgu: #c9781f;
  --zs-vurgu-acik: #f3c27a;
  --zs-koyu: #15120f;
  --zs-matematik: #f98014;
  --zs-fen: #06b6c2;
  --zs-sosyal: #7b61ff;
  position: fixed;
  inset: 0;
  overflow-x: hidden;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--zs-kagit);
  color: var(--zs-murekkep);
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  user-select: text;
  -webkit-user-select: text;
  scroll-behavior: smooth;
}
.zs * { box-sizing: border-box; }
/* :where → özgüllük 0: bileşen sınıfları (ör. düğme renkleri) bu temel kuralları her zaman ezer. */
:where(.zs) :where(h1, h2, h3, p, ul, ol) { margin: 0; }
:where(.zs) :where(a) { color: inherit; text-decoration: none; }
:where(.zs) :where(img, video) { display: block; max-width: 100%; }
.zs em { font-style: italic; }
.zs-kap { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.zs-ust-yazi {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--zs-vurgu);
  margin-bottom: 18px;
}
.zs-ust-yazi.zs-acik { color: var(--zs-vurgu-acik); }

/* Düğmeler */
.zs-dugmeler { display: flex; flex-wrap: wrap; gap: 12px; }
.zs-dugme {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 54px;
  padding: 0 26px;
  border-radius: 999px;
  font-size: 15.5px;
  font-weight: 600;
  white-space: nowrap;
  transition: transform 0.2s, background 0.2s, box-shadow 0.2s, color 0.2s;
  cursor: pointer;
}
.zs-dugme:hover { transform: translateY(-2px); }
.zs-dugme:active { transform: translateY(0) scale(0.98); }
.zs-dugme-kucuk { height: 42px; padding: 0 18px; font-size: 14px; }
.zs-dugme-acik { background: #fbf6ee; color: var(--zs-murekkep); box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18); }
.zs-dugme-acik:hover { background: #fff; }
.zs-dugme-cam {
  color: #fbf6ee;
  background: rgba(255, 248, 238, 0.12);
  border: 1px solid rgba(255, 248, 238, 0.28);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}
.zs-dugme-cam:hover { background: rgba(255, 248, 238, 0.2); }
.zs-dugme-koyu { background: var(--zs-murekkep); color: #fbf6ee; }
.zs-dugme-cizgi { border: 1.5px solid var(--zs-murekkep); }
.zs-oynat-ikon {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: currentColor;
  font-size: 10px;
  line-height: 1;
}
.zs-dugme-acik .zs-oynat-ikon { background: var(--zs-murekkep); color: #fbf6ee; }
.zs-dugme-cam .zs-oynat-ikon { background: #fbf6ee; color: var(--zs-murekkep); }

/* Menü */
.zs-menu {
  position: fixed;
  top: 14px;
  left: 50%;
  transform: translateX(-50%);
  width: min(1200px, calc(100% - 28px));
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 10px 10px 18px;
  border-radius: 999px;
  color: #fbf6ee;
  z-index: 20;
  transition: background 0.35s, box-shadow 0.35s, backdrop-filter 0.35s;
}
.zs-menu-dolu {
  background: rgba(21, 18, 15, 0.72);
  backdrop-filter: blur(18px) saturate(1.3);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.18);
}
.zs-logo { display: flex; align-items: center; gap: 10px; font-family: 'Fraunces', Georgia, serif; font-size: 21px; font-weight: 600; letter-spacing: -0.01em; }
.zs-menu-linkler { display: flex; gap: 26px; margin: 0 auto; font-size: 14.5px; font-weight: 500; }
.zs-menu-linkler a { opacity: 0.82; transition: opacity 0.2s; }
.zs-menu-linkler a:hover { opacity: 1; }

/* Giriş */
.zs-hero {
  position: relative;
  min-height: max(640px, 100svh);
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background: #1b1612;
  color: #fbf6ee;
}
.zs-hero-afis {
  position: absolute;
  inset: 0;
  background: #1b1612 url(/gorseller/hero.jpg) center / cover no-repeat;
  transition: opacity 1.4s ease;
}
.zs-hero-afis.zs-gizlen { opacity: 0; }
.zs-hero-tuval { position: absolute; inset: 0; z-index: 0; width: 100% !important; height: 100% !important; animation: zs-solarak 1.4s ease both; }
.zs-hero-perde {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(14, 11, 8, 0.82) 0%, rgba(14, 11, 8, 0.5) 34%, rgba(14, 11, 8, 0) 62%),
    linear-gradient(0deg, rgba(14, 11, 8, 0.7) 0%, rgba(14, 11, 8, 0) 35%),
    linear-gradient(180deg, rgba(14, 11, 8, 0.45) 0%, rgba(14, 11, 8, 0) 18%);
}
.zs-hero-icerik {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px clamp(72px, 13vh, 140px);
  animation: zs-yuksel 1.1s 0.15s cubic-bezier(0.2, 0.7, 0.2, 1) both;
}
.zs-hero-baslik {
  max-width: 760px;
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(46px, 6.6vw, 96px);
  font-weight: 450;
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-variation-settings: 'opsz' 144;
}
.zs-hero-baslik em { color: var(--zs-vurgu-acik); font-weight: 400; }
.zs-hero-alt { max-width: 540px; margin-top: 26px; font-size: clamp(16.5px, 1.5vw, 19px); line-height: 1.6; color: rgba(251, 246, 238, 0.82); }
.zs-hero .zs-dugmeler { margin-top: 36px; }
.zs-hero-notlar { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 28px !important; padding: 0; list-style: none; font-size: 13px; color: rgba(251, 246, 238, 0.62); }
.zs-hero-notlar li::before { content: '✓'; margin-right: 7px; color: var(--zs-vurgu-acik); }
.zs-hero-etiket {
  position: absolute;
  z-index: 2;
  right: 28px;
  bottom: 30px;
  font-size: 12px;
  color: rgba(251, 246, 238, 0.66);
  text-align: right;
}
.zs-hero-etiket span { display: block; font-size: 10.5px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--zs-vurgu-acik); }
.zs-asagi {
  position: absolute;
  z-index: 2;
  left: 50%;
  bottom: 22px;
  width: 26px;
  height: 42px;
  margin-left: -13px;
  border-radius: 999px;
  border: 1.5px solid rgba(251, 246, 238, 0.5);
}
.zs-asagi span { position: absolute; left: 50%; top: 9px; width: 3px; height: 8px; margin-left: -1.5px; border-radius: 3px; background: #fbf6ee; animation: zs-kaydir 1.8s ease-in-out infinite; }

/* Bölümler */
.zs-bolum { padding: clamp(84px, 11vw, 150px) 0; scroll-margin-top: 40px; }
.zs-bolum-kagit { background: var(--zs-kagit-koyu); }
.zs-bolum-koyu { background: var(--zs-koyu); color: #fbf6ee; }
.zs-bolum-baslik { max-width: 760px; margin-bottom: clamp(44px, 6vw, 72px); }
.zs-bolum-baslik h2, .zs-kesif-yazi h2, .zs-cagri h2 {
  font-family: 'Fraunces', Georgia, serif;
  font-size: clamp(36px, 4.4vw, 62px);
  font-weight: 450;
  line-height: 1.04;
  letter-spacing: -0.03em;
  font-variation-settings: 'opsz' 120;
}
.zs-bolum-baslik h2 em, .zs-cagri h2 em { color: var(--zs-soluk); }
.zs-kesif-yazi h2 em { color: var(--zs-vurgu-acik); }
.zs-bolum-alt { margin-top: 22px !important; max-width: 600px; font-size: 17.5px; color: var(--zs-soluk); }
.zs-bolum-koyu .zs-bolum-alt { color: rgba(251, 246, 238, 0.7); }

/* Adımlar: telefon çerçevesinde videolar */
.zs-adimlar { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 4vw, 56px); }
.zs-adim { display: flex; flex-direction: column; gap: 28px; }
.zs-telefon {
  position: relative;
  width: min(100%, 290px);
  aspect-ratio: 390 / 844;
  margin: 0 auto;
  border-radius: 42px;
  border: 10px solid #1d1a16;
  background: #1d1a16;
  overflow: hidden;
  box-shadow: 0 30px 60px -20px rgba(40, 28, 14, 0.45), 0 0 0 1px rgba(0, 0, 0, 0.06);
}
.zs-telefon::after {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  width: 76px;
  height: 22px;
  margin-left: -38px;
  border-radius: 999px;
  background: #1d1a16;
}
.zs-video { width: 100%; height: 100%; object-fit: cover; background: #e9e1d2; }
.zs-adim-yazi { padding: 0 6px; }
.zs-adim-no { font-family: 'Fraunces', Georgia, serif; font-size: 15px; font-style: italic; color: var(--zs-vurgu); }
.zs-adim h3 { margin-top: 4px !important; font-family: 'Fraunces', Georgia, serif; font-size: 32px; font-weight: 500; letter-spacing: -0.02em; }
.zs-adim p { margin-top: 8px !important; color: var(--zs-soluk); }

/* Ders vitrini */
.zs-filtreler { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.zs-filtre {
  height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid var(--zs-cizgi);
  background: var(--zs-beyaz);
  font: inherit;
  font-size: 14px;
  font-weight: 600;
  color: var(--zs-murekkep);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.zs-filtre span { margin-left: 4px; font-weight: 500; color: var(--zs-soluk); }
.zs-filtre.zs-etkin { background: var(--zs-murekkep); color: #fbf6ee; border-color: transparent; }
.zs-filtre.zs-etkin span { color: rgba(251, 246, 238, 0.6); }
.zs-dersler { display: grid; grid-template-columns: repeat(auto-fill, minmax(268px, 1fr)); gap: 20px; }
.zs-ders {
  --renk: var(--zs-matematik);
  display: flex;
  flex-direction: column;
  border-radius: 24px;
  background: var(--zs-beyaz);
  border: 1px solid var(--zs-cizgi);
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.35s;
}
.zs-ders-fen { --renk: var(--zs-fen); }
.zs-ders-sosyal { --renk: var(--zs-sosyal); }
.zs-ders:hover { transform: translateY(-6px); box-shadow: 0 24px 50px -24px rgba(40, 28, 14, 0.35); }
.zs-ders-gorsel { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--zs-kagit); }
.zs-ders-gorsel img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s cubic-bezier(0.2, 0.7, 0.2, 1); }
.zs-ders:hover .zs-ders-gorsel img { transform: scale(1.05); }
.zs-ders-emoji {
  position: absolute;
  left: 14px;
  bottom: -20px;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 15px;
  background: var(--renk);
  font-size: 24px;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.18);
}
.zs-ders-gorsel { overflow: visible; }
.zs-ders-gorsel img { border-radius: 0; }
.zs-ders-yazi { display: flex; flex-direction: column; flex: 1; padding: 30px 20px 20px; }
.zs-ders-ust { display: flex; gap: 10px; font-size: 12px; font-weight: 600; color: var(--zs-soluk); }
.zs-ders-ad { color: var(--renk); text-transform: uppercase; letter-spacing: 0.08em; }
.zs-ders h3 { margin-top: 6px !important; font-family: 'Fraunces', Georgia, serif; font-size: 22px; font-weight: 500; line-height: 1.2; letter-spacing: -0.015em; }
.zs-ders-ozet { margin-top: 8px !important; font-size: 14.5px; line-height: 1.55; color: var(--zs-soluk); flex: 1; }
.zs-ders-oyna { margin-top: 16px; font-size: 14px; font-weight: 700; color: var(--renk); }

/* Keşif */
.zs-kesif { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.25fr); gap: clamp(36px, 5vw, 80px); align-items: center; }
.zs-kesif-yazi .zs-dugme { margin-top: 34px; }
.zs-liste { margin-top: 26px !important; padding: 0; list-style: none; display: grid; gap: 10px; color: rgba(251, 246, 238, 0.82); }
.zs-liste li { display: flex; gap: 12px; align-items: baseline; }
.zs-liste li::before { content: ''; flex: none; width: 18px; height: 1px; background: var(--zs-vurgu-acik); transform: translateY(-4px); }
.zs-tarayici {
  border-radius: 18px;
  overflow: hidden;
  background: #241e18;
  border: 1px solid rgba(255, 248, 238, 0.12);
  box-shadow: 0 40px 90px -30px rgba(0, 0, 0, 0.7);
}
.zs-tarayici-ust { display: flex; align-items: center; gap: 7px; height: 38px; padding: 0 14px; background: #2c251e; }
.zs-tarayici-ust i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 248, 238, 0.22); }
.zs-tarayici-ust span { margin: 0 auto; padding: 3px 14px; border-radius: 8px; background: rgba(0, 0, 0, 0.25); font-size: 11.5px; color: rgba(251, 246, 238, 0.6); }
.zs-tarayici .zs-video { aspect-ratio: 16 / 9; height: auto; background: #1b1612; }

/* Yol haritası */
.zs-yol { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; padding: 0; list-style: none; }
.zs-yol-adim { position: relative; padding: 28px; border-radius: 24px; border: 1px solid var(--zs-cizgi); background: var(--zs-beyaz); }
.zs-yol-adim.zs-etkin { border-color: var(--zs-vurgu); box-shadow: 0 0 0 3px rgba(201, 120, 31, 0.12); }
.zs-yol-durum {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  background: var(--zs-kagit-koyu);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--zs-soluk);
}
.zs-yol-adim.zs-etkin .zs-yol-durum { background: var(--zs-vurgu); color: #fff; }
.zs-yol-adim h3 { margin-top: 18px !important; font-family: 'Fraunces', Georgia, serif; font-size: 34px; font-weight: 500; letter-spacing: -0.02em; }
.zs-yol-dersler { margin-top: 4px !important; font-size: 14px; font-weight: 600; color: var(--zs-soluk); }
.zs-yol-adim ul { margin-top: 18px !important; padding: 0; list-style: none; display: flex; flex-wrap: wrap; gap: 6px; }
.zs-yol-adim ul li { padding: 5px 11px; border-radius: 999px; background: var(--zs-kagit); font-size: 13px; }

/* Güvenceler */
.zs-guvenceler { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; border-radius: 24px; overflow: hidden; background: var(--zs-cizgi); border: 1px solid var(--zs-cizgi); }
.zs-guvence { padding: 32px 28px; background: var(--zs-beyaz); }
.zs-guvence-isaret { display: grid; place-items: center; width: 46px; height: 46px; border-radius: 14px; background: var(--zs-kagit); font-size: 22px; }
.zs-guvence h3 { margin-top: 18px !important; font-size: 18px; font-weight: 700; letter-spacing: -0.01em; }
.zs-guvence p { margin-top: 6px !important; font-size: 15px; color: var(--zs-soluk); }

/* Son çağrı */
.zs-cagri { padding: clamp(64px, 8vw, 110px) 0; background: linear-gradient(120deg, #f6c56f 0%, #f39a3d 55%, #ec7f2a 100%); }
.zs-cagri-ic { display: flex; align-items: center; gap: clamp(24px, 5vw, 64px); }
.zs-cagri-ic img { flex: none; width: clamp(110px, 14vw, 170px); height: auto; filter: drop-shadow(0 18px 30px rgba(80, 40, 0, 0.3)); }
.zs-cagri h2 em { color: rgba(29, 26, 22, 0.62); }
.zs-cagri p { margin-top: 14px !important; font-size: 18px; color: rgba(29, 26, 22, 0.75); }
.zs-cagri .zs-dugmeler { margin-top: 28px; }

/* Alt bilgi */
.zs-alt { padding: 48px 0 56px; background: var(--zs-koyu); color: rgba(251, 246, 238, 0.66); font-size: 14px; }
.zs-alt-ic { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.zs-alt-logo { font-family: 'Fraunces', Georgia, serif; font-size: 22px; color: #fbf6ee; }
.zs-alt nav { display: flex; flex-wrap: wrap; gap: 20px; }
.zs-alt nav a:hover { color: #fbf6ee; }
.zs-alt-telif { width: 100%; padding-top: 20px; border-top: 1px solid rgba(255, 248, 238, 0.1); font-size: 13px; }

/* Kaydırınca belirme */
.zs-belir { opacity: 0; transform: translateY(28px); transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.2, 0.7, 0.2, 1); }
.zs-belir.zs-gorundu { opacity: 1; transform: none; }

@keyframes zs-yuksel { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: none; } }
@keyframes zs-solarak { from { opacity: 0; } to { opacity: 1; } }
@keyframes zs-kaydir { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(12px); } }

@media (max-width: 980px) {
  .zs-menu-linkler { display: none; }
  .zs-menu { justify-content: space-between; }
  .zs-kesif { grid-template-columns: 1fr; }
  .zs-yol { grid-template-columns: 1fr; }
  .zs-guvenceler { grid-template-columns: repeat(2, 1fr); }
  .zs-hero-etiket { display: none; }
}
@media (max-width: 760px) {
  .zs-adimlar {
    display: flex;
    gap: 18px;
    margin: 0 -24px;
    padding: 0 24px 8px;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    scrollbar-width: none;
  }
  .zs-adimlar::-webkit-scrollbar { display: none; }
  .zs-adim { flex: 0 0 76%; scroll-snap-align: center; }
  .zs-telefon { width: 100%; border-width: 8px; border-radius: 34px; }
  .zs-guvenceler { grid-template-columns: 1fr; }
  /* Telefonda dersler iki sütunlu, sade kartlar */
  .zs-dersler { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
  .zs-ders { border-radius: 18px; }
  .zs-ders-yazi { padding: 22px 12px 14px; }
  .zs-ders-emoji { width: 36px; height: 36px; left: 10px; bottom: -16px; border-radius: 12px; font-size: 19px; }
  .zs-ders-ust { flex-direction: column; gap: 0; font-size: 10.5px; }
  .zs-ders h3 { font-size: 16.5px; }
  .zs-ders-ozet { display: none; }
  .zs-ders-oyna { margin-top: 10px; font-size: 13px; }
  .zs-ders:hover { transform: none; }
  .zs-cagri-ic { flex-direction: column; text-align: center; }
  .zs-cagri .zs-dugmeler { justify-content: center; }
  .zs-hero-perde {
    background:
      linear-gradient(0deg, rgba(14, 11, 8, 0.88) 0%, rgba(14, 11, 8, 0.55) 45%, rgba(14, 11, 8, 0.1) 75%),
      linear-gradient(180deg, rgba(14, 11, 8, 0.5) 0%, rgba(14, 11, 8, 0) 20%);
  }
  .zs-hero-icerik { padding-bottom: 64px; }
  .zs-dugme { height: 50px; padding: 0 20px; font-size: 15px; }
  .zs-menu .zs-dugme-kucuk { height: 38px; padding: 0 14px; font-size: 13px; }
  .zs-logo span { font-size: 18px; }
  .zs-asagi { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  .zs { scroll-behavior: auto; }
  .zs-belir { transition: none; opacity: 1; transform: none; }
  .zs *, .zs *::after { animation: none !important; }
}