/* ИСТОК — medical center design system */
:root {
  --istok-font: "Manrope", system-ui, sans-serif;
  --istok-serif: "Playfair Display", "Times New Roman", serif;
  --istok-container: min(1440px, calc(100% - 80px));
  --istok-gold: #c5a059;
  --istok-gold-dark: #a8863f;
  --istok-gold-light: #e8d4a8;
  --istok-navy: #1b2433;
  --istok-text: #2d3748;
  --istok-muted: #8b95a5;
  --istok-bg: #ffffff;
  --istok-surface: #f4f5f7;
  --istok-border: #e2e6ec;
  --istok-radius: 20px;
  --istok-radius-sm: 12px;
  --istok-radius-pill: 999px;
  --istok-shadow: 0 20px 60px rgba(27, 36, 51, 0.08);
  --istok-shadow-sm: 0 8px 30px rgba(27, 36, 51, 0.06);
  --istok-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --istok-header-h: 88px;
  --istok-dock-h: 120px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--istok-font);
  font-size: 16px;
  line-height: 1.55;
  color: var(--istok-text);
  background: var(--istok-bg);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4, p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

.istok-skip {
  position: absolute; left: 12px; top: -100px; z-index: 9999;
  padding: 10px 16px; border-radius: 8px;
  background: var(--istok-navy); color: #fff; font-weight: 700;
}
.istok-skip:focus { top: 12px; outline: none; }

.istok-container { width: var(--istok-container); margin-inline: auto; }

/* Header */
.istok-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--istok-header-h);
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s, background 0.3s;
}
.istok-header.is-scrolled {
  background: rgba(255, 255, 255, 0.96);
  border-color: var(--istok-border);
  box-shadow: var(--istok-shadow-sm);
}
.istok-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 40px;
  height: var(--istok-header-h);
}
.istok-logo {
  display: flex; align-items: center; gap: 14px;
}
.istok-logo__icon { width: 40px; height: 40px; flex-shrink: 0; }
.istok-logo__text { display: flex; flex-direction: column; gap: 2px; }
.istok-logo__name {
  font-size: 1.125rem; font-weight: 800; letter-spacing: 0.14em;
  color: var(--istok-navy); line-height: 1;
}
.istok-logo__tag {
  font-size: 0.5625rem; font-weight: 600; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--istok-muted);
}

.istok-nav {
  display: flex; justify-content: center; gap: 6px;
}
.istok-nav a {
  position: relative;
  padding: 10px 16px;
  font-size: 0.8125rem; font-weight: 600;
  color: var(--istok-muted);
  transition: color 0.25s;
}
.istok-nav a::after {
  content: "";
  position: absolute; left: 16px; right: 16px; bottom: 4px;
  height: 2px; background: var(--istok-gold);
  transform: scaleX(0); transition: transform 0.3s var(--istok-ease);
}
.istok-nav a:hover { color: var(--istok-navy); }
.istok-nav a.is-active { color: var(--istok-navy); }
.istok-nav a.is-active::after { transform: scaleX(1); }

.istok-header__actions {
  display: flex; align-items: center; gap: 20px;
}
.istok-phone {
  display: flex; flex-direction: column; align-items: flex-end; gap: 2px;
  text-align: right;
}
.istok-phone__num {
  font-size: 0.9375rem; font-weight: 800; color: var(--istok-navy);
  white-space: nowrap;
}
.istok-phone__callback {
  font-size: 0.5625rem; font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--istok-gold);
  transition: color 0.2s;
}
.istok-phone__callback:hover { color: var(--istok-gold-dark); }

.istok-burger {
  position: relative;
  width: 48px; height: 48px;
  flex-shrink: 0;
  border: 1.5px solid var(--istok-border); border-radius: 50%;
  background: transparent; cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
}
.istok-burger:hover { border-color: var(--istok-gold); background: rgba(197, 160, 89, 0.06); }
.istok-burger span {
  position: absolute;
  left: 50%;
  width: 18px;
  min-width: 18px;
  max-width: 18px;
  height: 2px;
  margin: 0;
  margin-left: -9px;
  border-radius: 1px;
  background: var(--istok-navy);
  transform-origin: center;
  transition: top 0.25s, transform 0.25s, opacity 0.25s;
}
.istok-burger span:nth-child(1) { top: 16px; }
.istok-burger span:nth-child(2) { top: 23px; }
.istok-burger span:nth-child(3) { top: 30px; }
.istok-burger.is-open span:nth-child(1) { top: 23px; transform: rotate(45deg); }
.istok-burger.is-open span:nth-child(2) { opacity: 0; }
.istok-burger.is-open span:nth-child(3) { top: 23px; transform: rotate(-45deg); }

/* Buttons */
.istok-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 28px;
  border: none; border-radius: var(--istok-radius-pill);
  font-size: 0.6875rem; font-weight: 800; letter-spacing: 0.14em;
  text-transform: uppercase; cursor: pointer;
  transition: transform 0.25s var(--istok-ease), box-shadow 0.25s, background 0.25s;
}
.istok-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.istok-btn--gold {
  background: linear-gradient(135deg, #d4b06a, var(--istok-gold) 50%, var(--istok-gold-dark));
  color: #fff;
  box-shadow: 0 10px 30px rgba(197, 160, 89, 0.35);
}
.istok-btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgba(197, 160, 89, 0.45);
}
.istok-btn--outline {
  background: rgba(255, 255, 255, 0.85);
  border: 1.5px solid var(--istok-border);
  color: var(--istok-navy);
  backdrop-filter: blur(8px);
}
.istok-btn--outline:hover {
  border-color: var(--istok-gold);
  background: #fff;
  transform: translateY(-2px);
}
.istok-btn--navy {
  background: var(--istok-navy); color: #fff;
  box-shadow: 0 10px 28px rgba(27, 36, 51, 0.25);
}
.istok-btn--navy:hover {
  transform: translateY(-2px);
  background: #243044;
}
.istok-btn--ghost {
  min-height: 44px; padding: 0 22px;
  background: transparent;
  border: 1.5px solid var(--istok-gold);
  color: var(--istok-gold-dark);
  font-size: 0.625rem;
}
.istok-btn--ghost:hover {
  background: rgba(197, 160, 89, 0.08);
  transform: translateY(-1px);
}
.istok-btn--block { width: 100%; }
.istok-btn--sm { min-height: 44px; padding: 0 20px; }

.istok-icon-btn {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border: 1.5px solid var(--istok-border); border-radius: 50%;
  background: #fff; color: var(--istok-muted); cursor: pointer;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.istok-icon-btn:hover {
  border-color: var(--istok-gold); color: var(--istok-gold);
  transform: scale(1.05);
}
.istok-icon-btn svg { width: 18px; height: 18px; }
.istok-account { color: var(--istok-muted); }
.istok-account.is-authed { color: var(--istok-gold-dark); border-color: var(--istok-gold-light); }

/* Cookies */
.istok-cookies {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  z-index: 1300;
  display: flex;
  justify-content: center;
  pointer-events: none;
}
.istok-cookies__inner {
  width: min(980px, 100%);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border: 1px solid var(--istok-border);
  border-radius: var(--istok-radius);
  box-shadow: var(--istok-shadow-sm);
  padding: 16px 18px;
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
}
.istok-cookies__text {
  display: grid;
  gap: 4px;
  color: var(--istok-muted);
  font-size: 0.8125rem;
}
.istok-cookies__text strong {
  color: var(--istok-navy);
  font-size: 0.8125rem;
}
.istok-cookies__text a { color: var(--istok-gold-dark); font-weight: 700; }
.istok-cookies__actions { display: flex; gap: 10px; align-items: center; flex-shrink: 0; }
.istok-cookies.is-hidden { opacity: 0; transform: translateY(10px); transition: opacity 0.35s, transform 0.35s; }

/* Patient card */
.istok-patient {
  padding: 0 0 28px;
  margin-top: 24px;
}
.istok-patient__card {
  border: 1px solid rgba(255,255,255,0.22);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(10px);
  border-radius: var(--istok-radius);
  box-shadow: 0 18px 60px rgba(0,0,0,0.18);
  padding: 22px 22px;
  color: rgba(255, 255, 255, 0.92);
  display: grid;
  gap: 14px;
}
.istok-patient__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}
.istok-patient__title {
  font-family: var(--istok-serif);
  font-size: 1.25rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.istok-patient__hint {
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
}
.istok-patient__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px 18px;
}
.istok-patient__field {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255,255,255,0.16);
}
.istok-patient__label {
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}
.istok-patient__value {
  font-size: 0.9375rem;
  font-weight: 700;
  color: #fff;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.istok-patient__actions { display: flex; gap: 10px; flex-wrap: wrap; }
.istok-patient__card.is-empty .istok-patient__value { color: rgba(255,255,255,0.75); font-weight: 600; }

/* Records */
.istok-records { display: grid; gap: 18px; }
.istok-record {
  border: 1px solid var(--istok-border);
  background: #fff;
  border-radius: var(--istok-radius);
  padding: 18px 18px;
  box-shadow: var(--istok-shadow-sm);
}
.istok-record__top { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.istok-record__title { font-weight: 900; color: var(--istok-navy); }
.istok-record__meta { margin-top: 6px; font-size: 0.8125rem; color: var(--istok-muted); }
.istok-record__note { margin-top: 12px; font-size: 0.875rem; color: var(--istok-muted); line-height: 1.55; }
.istok-record__note strong { color: var(--istok-navy); }
.istok-record--past { padding: 0; overflow: hidden; }
.istok-record__summary {
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 18px 18px;
  list-style: none;
}
.istok-record__summary::-webkit-details-marker { display: none; }
.istok-record__chev { color: var(--istok-muted); font-weight: 900; transition: transform 0.2s; }
.istok-record[open] .istok-record__chev { transform: rotate(180deg); }
.istok-record__body {
  padding: 14px 18px 18px;
  border-top: 1px solid var(--istok-border);
  color: var(--istok-muted);
  font-size: 0.875rem;
  line-height: 1.65;
}
.istok-record__body p {
  margin: 0 0 10px;
}
.istok-record__body p:last-child {
  margin-bottom: 0;
}
.istok-record__body strong { color: var(--istok-navy); }
.istok-record__files {
  margin: 0 0 10px;
  padding-left: 18px;
}
.istok-record__files a {
  color: var(--istok-navy);
  text-decoration: underline;
  text-underline-offset: 2px;
}
.istok-empty {
  border: 1px dashed var(--istok-border);
  border-radius: var(--istok-radius);
  padding: 22px;
  background: var(--istok-surface);
  display: flex;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  color: var(--istok-muted);
}
.istok-empty p { margin: 0; }

/* Footer legal links */
.istok-footer__legal {
  display: flex;
  gap: 18px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.istok-footer__legal a {
  font-size: 0.75rem;
  color: rgba(255,255,255,0.65);
  text-decoration: underline;
}
.istok-footer__legal a:hover { color: rgba(255,255,255,0.9); }

/* Mobile menu */
.istok-mobile {
  position: fixed; inset: 0; z-index: 1050; pointer-events: none;
}
.istok-mobile__backdrop {
  position: absolute; inset: 0; background: rgba(27, 36, 51, 0.4);
  opacity: 0; transition: opacity 0.3s;
}
.istok-mobile__panel {
  position: absolute; top: 0; right: 0;
  width: min(100%, 360px); height: 100%;
  padding: 28px; background: #fff;
  transform: translateX(100%);
  transition: transform 0.35s var(--istok-ease);
  overflow-y: auto;
}
.istok-mobile.is-open { pointer-events: auto; }
.istok-mobile.is-open .istok-mobile__backdrop { opacity: 1; }
.istok-mobile.is-open .istok-mobile__panel { transform: translateX(0); }
.istok-mobile__nav { display: flex; flex-direction: column; gap: 4px; margin-top: 32px; }
.istok-mobile__nav a {
  padding: 14px 12px; border-radius: var(--istok-radius-sm);
  font-weight: 700; font-size: 0.9375rem;
}
.istok-mobile__nav a:hover { background: var(--istok-surface); }
.istok-mobile__cta { margin-top: 24px; display: grid; gap: 10px; }

/* ========== HOME HERO ========== */
.istok-home {
  position: relative;
  min-height: 200vh;
  padding-top: 0;
  padding-bottom: calc(var(--istok-dock-h) + 24px);
  overflow: visible;
  background: #fff;
}
.istok-home__sticky {
  position: fixed;
  inset: 0;
  height: 100vh;
  overflow: hidden;
}
.istok-home__bg {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}
.istok-home__bg img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: 78% center;
  animation: istok-kenburns 22s ease-in-out infinite alternate;
}
.istok-home__bg-img {
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 0.8s var(--istok-ease), transform 1.2s var(--istok-ease);
}
.istok-home__bg-img.is-active {
  opacity: 1;
  transform: scale(1);
}
@keyframes istok-kenburns {
  from { transform: scale(1); }
  to { transform: scale(1.05); }
}
.istok-home__bg::before {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(255, 255, 255, 0.94) 24%,
    rgba(255, 255, 255, 0.72) 42%,
    rgba(255, 255, 255, 0.28) 58%,
    rgba(255, 255, 255, 0.06) 74%,
    transparent 88%
  );
  z-index: 1;
}
.istok-home__inner {
  position: relative; z-index: 2;
  display: grid;
  grid-template-columns: minmax(0, 720px) 1fr;
  align-items: center;
  align-content: center;
  min-height: calc(100vh - var(--istok-dock-h) - 24px);
  padding: calc(var(--istok-header-h) + 48px) 0 32px;
}
.istok-home__content {
  grid-column: 1;
  max-width: 720px;
  width: 100%;
}
.istok-hero-slides {
  position: relative;
  display: grid;
}
.istok-hero-slides > .istok-hero-slide {
  grid-area: 1 / 1;
}
.istok-hero-slide {
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: opacity 0.55s var(--istok-ease), transform 0.75s var(--istok-ease);
}
.istok-hero-slide.is-active {
  opacity: 1;
  transform: none;
  pointer-events: auto;
}

/* Hero slider controls */
.istok-hero-dots {
  position: absolute;
  right: clamp(20px, 4vw, 48px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: 0;
  margin: 0;
  pointer-events: auto;
}
.istok-hero-dots__bar {
  display: block;
  width: 36px;
  height: 3px;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: rgba(27, 36, 51, 0.22);
  cursor: pointer;
  transition: width 0.35s var(--istok-ease), background 0.35s, opacity 0.35s;
}
.istok-hero-dots__bar:hover {
  background: rgba(197, 160, 89, 0.55);
}
.istok-hero-dots__bar.is-active {
  width: 56px;
  background: var(--istok-gold);
}
.istok-hero-dots__bar:focus-visible {
  outline: 2px solid var(--istok-gold);
  outline-offset: 4px;
}

.istok-home__title {
  font-family: var(--istok-serif);
  font-size: clamp(2.75rem, 5.5vw, 4.5rem);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: 0.02em;
  color: var(--istok-navy);
  text-transform: uppercase;
}
.istok-home__title em {
  font-style: normal;
  color: var(--istok-gold);
}
.istok-home__lead {
  margin-top: 28px;
  max-width: 46ch;
  font-size: 0.6875rem; font-weight: 700;
  letter-spacing: 0.12em; line-height: 1.7;
  text-transform: uppercase;
  color: var(--istok-muted);
}
.istok-home__actions {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-top: 36px;
}
.istok-home__badge-wrap {
  grid-column: 2;
  grid-row: 1;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  padding-left: 0;
  margin-left: clamp(-48px, -4vw, -28px);
  pointer-events: none;
  z-index: 2;
}
.istok-home__badge {
  position: relative;
  left: auto;
  top: auto;
  z-index: 3;
  width: 108px;
  height: 108px;
  flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--istok-shadow-sm);
  text-align: center;
  font-size: 0.5rem; font-weight: 800;
  letter-spacing: 0.1em; line-height: 1.45;
  text-transform: uppercase;
  color: var(--istok-navy);
  animation: istok-float 5s ease-in-out infinite;
  pointer-events: none;
}
@keyframes istok-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Feature cards */
.istok-features {
  display: flex; flex-direction: column; gap: 12px;
  min-width: 0;
}
.istok-feature {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 18px 20px;
  border-radius: var(--istok-radius);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(226, 230, 236, 0.8);
  box-shadow: var(--istok-shadow-sm);
  backdrop-filter: blur(10px);
  transition: transform 0.3s var(--istok-ease), box-shadow 0.3s;
}
.istok-feature:hover {
  transform: translateY(-3px);
  box-shadow: var(--istok-shadow);
}
.istok-feature__icon {
  width: 44px; height: 44px; flex-shrink: 0;
  display: grid; place-items: center;
  color: var(--istok-gold);
}
.istok-feature__icon svg { width: 28px; height: 28px; }
.istok-feature__title {
  font-size: 0.6875rem; font-weight: 800;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--istok-navy);
}
.istok-feature__text {
  margin-top: 6px;
  font-size: 0.8125rem; color: var(--istok-muted); line-height: 1.5;
}

/* Hero: compact feature row under CTA */
.istok-features--hero {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 28px;
  width: 100%;
}
.istok-features--hero .istok-feature {
  flex-direction: column;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 14px 16px;
  min-height: 0;
}
.istok-features--hero .istok-feature:hover {
  transform: translateY(-2px);
}
.istok-features--hero .istok-feature__icon {
  width: 34px;
  height: 34px;
}
.istok-features--hero .istok-feature__icon svg {
  width: 20px;
  height: 20px;
}
.istok-features--hero .istok-feature__title {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  line-height: 1.4;
}
.istok-features--hero .istok-feature__text {
  margin-top: 6px;
  font-size: 0.8125rem;
  line-height: 1.5;
}

/* Bottom dock */
.istok-dock {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 900;
  padding: 0 24px 20px;
  animation: istok-dock-up 0.8s var(--istok-ease) 0.3s both;
}
@keyframes istok-dock-up {
  from { opacity: 0; transform: translateY(40px); }
  to { opacity: 1; transform: none; }
}
.istok-dock__inner {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr auto;
  align-items: center; gap: 8px;
  max-width: var(--istok-container);
  margin: 0 auto;
  padding: 22px 28px;
  border-radius: 24px 24px 20px 20px;
  background: #fff;
  border: 1px solid var(--istok-border);
  box-shadow: 0 -8px 40px rgba(27, 36, 51, 0.08);
}
.istok-dock__item {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 4px 12px;
}
.istok-dock__icon {
  width: 40px; height: 40px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1.5px solid var(--istok-gold-light);
  color: var(--istok-gold);
}
.istok-dock__icon svg { width: 18px; height: 18px; }
.istok-dock__label {
  font-size: 0.5625rem; font-weight: 800;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--istok-navy);
}
.istok-dock__text {
  margin-top: 4px;
  font-size: 0.75rem; color: var(--istok-muted); line-height: 1.45;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.istok-dock__text strong {
  display: block; font-weight: 700; color: var(--istok-text);
}
.istok-dock__text span {
  display: block;
}

/* ========== DOCTORS PAGE ========== */
.istok-page {
  padding-top: var(--istok-header-h);
  background: #fff;
}
.istok-doctors-hero {
  padding: 56px 0 48px;
}
.istok-doctors-hero--bg {
  position: relative;
  overflow: hidden;
  min-height: clamp(420px, 52vh, 560px);
  padding: calc(var(--istok-header-h) + 48px) 0 56px;
  background: #fff;
}
.istok-doctors-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.istok-doctors-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 70% center;
}
.istok-doctors-hero--bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(255, 255, 255, 0.92) 32%,
    rgba(255, 255, 255, 0.55) 52%,
    rgba(255, 255, 255, 0.12) 72%,
    transparent 88%
  );
  pointer-events: none;
}
.istok-doctors-hero--bg .istok-container {
  position: relative;
  z-index: 2;
}
.istok-doctors-hero__content {
  max-width: min(560px, 100%);
}
.istok-doctors-hero__grid {
  display: grid;
  grid-template-columns: 1fr min(42%, 520px);
  gap: 48px;
  align-items: center;
}
.istok-doctors-hero__title {
  font-family: var(--istok-serif);
  font-size: clamp(2.5rem, 4.5vw, 3.75rem);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--istok-navy);
}
.istok-doctors-hero__title em {
  font-style: normal;
  color: var(--istok-gold);
}
.istok-doctors-hero__lead {
  margin-top: 20px;
  max-width: 52ch;
  font-size: 0.9375rem;
  color: var(--istok-muted);
  line-height: 1.65;
}
.istok-doctors-hero__visual {
  position: relative;
  border-radius: var(--istok-radius);
  overflow: hidden;
}
.istok-doctors-hero__visual img {
  width: 100%; height: 320px; object-fit: cover;
  mask-image: linear-gradient(90deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 18%, #000 82%, transparent 100%);
}

.istok-doctors-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 32px;
  padding-top: 48px;
  padding-bottom: 80px;
}

/* Filter sidebar */
.istok-filter {
  padding: 28px 24px;
  border-radius: var(--istok-radius);
  background: var(--istok-surface);
  align-self: start;
  position: sticky;
  top: calc(var(--istok-header-h) + 20px);
}
.istok-filter__title {
  font-size: 0.625rem; font-weight: 800;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--istok-navy);
  margin-bottom: 20px;
}
.istok-filter__field { margin-bottom: 16px; }
.istok-filter__field label {
  display: block;
  margin-bottom: 8px;
  font-size: 0.5625rem; font-weight: 800;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--istok-muted);
}
.istok-filter__search {
  position: relative;
}
.istok-filter__search input,
.istok-filter__field select {
  width: 100%; min-height: 46px;
  padding: 0 14px 0 40px;
  border: 1px solid var(--istok-border);
  border-radius: var(--istok-radius-sm);
  background: #fff;
  font-size: 0.875rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.istok-filter__field select {
  padding-left: 14px;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none'%3E%3Cpath d='M1 1.5l5 5 5-5' stroke='%238b95a5' stroke-width='1.5'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}
.istok-filter__search input:focus,
.istok-filter__field select:focus {
  outline: none;
  border-color: var(--istok-gold);
  box-shadow: 0 0 0 3px rgba(197, 160, 89, 0.15);
}
.istok-filter__search svg {
  position: absolute; left: 14px; top: 50%;
  transform: translateY(-50%);
  width: 18px; height: 18px; color: var(--istok-muted);
  pointer-events: none;
}
.istok-filter__reset {
  display: inline-flex; align-items: center; gap: 8px;
  margin-top: 12px;
  font-size: 0.625rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--istok-muted);
  background: none; border: none; cursor: pointer;
  transition: color 0.2s;
}
.istok-filter__reset:hover { color: var(--istok-gold); }
.istok-filter__reset svg { width: 14px; height: 14px; }

/* Doctor cards — horizontal */
.istok-doc-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.istok-doc-card {
  display: grid;
  grid-template-columns: 1fr 140px;
  border-radius: var(--istok-radius);
  background: #fff;
  border: 1px solid var(--istok-border);
  overflow: hidden;
  transition: transform 0.3s var(--istok-ease), box-shadow 0.3s;
}
.istok-doc-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--istok-shadow);
}
.istok-doc-card__body {
  padding: 22px 20px 20px;
  display: flex; flex-direction: column;
}
.istok-doc-card__spec {
  font-size: 0.5625rem; font-weight: 800;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--istok-gold);
}
.istok-doc-card__name {
  margin-top: 8px;
  font-size: 1rem; font-weight: 800;
  color: var(--istok-navy); line-height: 1.25;
}
.istok-doc-card__role {
  margin-top: 6px;
  font-size: 0.75rem; color: var(--istok-muted);
}
.istok-doc-card__stats {
  display: flex; flex-wrap: wrap; gap: 14px;
  margin-top: 14px;
  font-size: 0.6875rem; font-weight: 600; color: var(--istok-muted);
}
.istok-doc-card__stats span {
  display: inline-flex; align-items: center; gap: 6px;
}
.istok-doc-card__stats svg { width: 14px; height: 14px; color: var(--istok-gold); }
.istok-doc-card__actions {
  display: flex; align-items: center; gap: 10px;
  margin-top: auto; padding-top: 16px;
}
.istok-doc-card__photo {
  background: var(--istok-surface);
  overflow: hidden;
}
.istok-doc-card__photo img {
  width: 100%; height: 100%;
  min-height: 200px;
  object-fit: cover; object-position: top center;
}
.istok-doc-more {
  display: flex; justify-content: center;
  margin-top: 32px;
}

/* Doctors feature bar */
.istok-benefits {
  padding: 40px 0 48px;
  background: var(--istok-surface);
  border-top: 1px solid var(--istok-border);
}
.istok-benefits__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.istok-benefit {
  display: flex; align-items: flex-start; gap: 14px;
}
.istok-benefit__icon {
  width: 44px; height: 44px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1.5px solid var(--istok-gold-light);
  color: var(--istok-gold);
}
.istok-benefit__icon svg { width: 20px; height: 20px; }
.istok-benefit__title {
  font-size: 0.6875rem; font-weight: 800;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--istok-navy);
}
.istok-benefit__text {
  margin-top: 4px;
  font-size: 0.75rem; color: var(--istok-muted); line-height: 1.45;
}

/* Animations */
.istok-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s var(--istok-ease), transform 0.7s var(--istok-ease);
}
.istok-reveal.is-visible { opacity: 1; transform: none; }
.istok-reveal--left {
  opacity: 0;
  transform: translateX(-28px);
  transition: opacity 0.8s var(--istok-ease), transform 0.8s var(--istok-ease);
}
.istok-reveal--left.is-visible { opacity: 1; transform: none; }
.istok-reveal--right {
  opacity: 0;
  transform: translateX(28px);
  transition: opacity 0.8s var(--istok-ease), transform 0.8s var(--istok-ease);
}
.istok-reveal--right.is-visible { opacity: 1; transform: none; }
.istok-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s var(--istok-ease), transform 0.6s var(--istok-ease);
}
.istok-stagger.is-visible > *:nth-child(1) { transition-delay: 0.05s; opacity: 1; transform: none; }
.istok-stagger.is-visible > *:nth-child(2) { transition-delay: 0.15s; opacity: 1; transform: none; }
.istok-stagger.is-visible > *:nth-child(3) { transition-delay: 0.25s; opacity: 1; transform: none; }
.istok-stagger.is-visible > *:nth-child(4) { transition-delay: 0.35s; opacity: 1; transform: none; }
.istok-stagger.is-visible > *:nth-child(5) { transition-delay: 0.45s; opacity: 1; transform: none; }
.istok-stagger.is-visible > *:nth-child(6) { transition-delay: 0.55s; opacity: 1; transform: none; }

.istok-hero-enter .istok-home__title span {
  display: block;
  opacity: 0;
  transform: translateY(30px);
  animation: istok-title-in 0.8s var(--istok-ease) forwards;
}
.istok-hero-enter .istok-home__title span:nth-child(2) { animation-delay: 0.12s; }
.istok-hero-enter .istok-home__title span:nth-child(3) { animation-delay: 0.24s; }
@keyframes istok-title-in {
  to { opacity: 1; transform: none; }
}

/* Modal */
.istok-modal-backdrop {
  position: fixed; inset: 0; z-index: 1200;
  background: rgba(27, 36, 51, 0.5);
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}
.istok-modal-backdrop.is-visible { opacity: 1; visibility: visible; }
.istok-modal {
  position: fixed; inset: 0; z-index: 1210;
  display: grid; place-items: center;
  padding: 24px; pointer-events: none;
  opacity: 0; visibility: hidden;
  transition: opacity 0.25s, visibility 0.25s;
}
.istok-modal.is-open { pointer-events: auto; opacity: 1; visibility: visible; }
.istok-modal__panel {
  width: min(100%, 420px); padding: 32px 28px;
  border-radius: var(--istok-radius);
  background: #fff; box-shadow: var(--istok-shadow);
  text-align: center; position: relative;
}
.istok-modal__close {
  position: absolute; top: 14px; right: 14px;
  width: 40px; height: 40px; border: none;
  border-radius: 50%; background: var(--istok-surface);
  cursor: pointer; color: var(--istok-muted);
}
.istok-modal__title {
  font-family: var(--istok-serif);
  font-size: 1.5rem; font-weight: 500;
}
.istok-modal__text { margin: 12px 0 24px; color: var(--istok-muted); font-size: 0.9375rem; }
body.istok-modal-open { overflow: hidden; }

/* Inner pages */
.istok-header--solid {
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid var(--istok-border);
}
.istok-inner-hero {
  padding: calc(var(--istok-header-h) + 48px) 0 40px;
  background: linear-gradient(180deg, #fff 0%, var(--istok-surface) 100%);
}
.istok-inner-hero--clinic-bg,
.istok-inner-hero--tech-bg,
.istok-inner-hero--programs-bg,
.istok-inner-hero--contacts-bg,
.istok-inner-hero--news-bg {
  position: relative;
  overflow: hidden;
  min-height: clamp(420px, 52vh, 560px);
  padding-bottom: 64px;
  background: #fff;
}
.istok-inner-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.istok-inner-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 68% center;
}
.istok-inner-hero--tech-bg .istok-inner-hero__bg img {
  object-position: 76% center;
}
.istok-inner-hero--programs-bg .istok-inner-hero__bg img {
  object-position: 72% center;
}
.istok-inner-hero--contacts-bg .istok-inner-hero__bg img {
  object-position: 70% center;
}
.istok-inner-hero--news-bg .istok-inner-hero__bg img {
  object-position: 62% center;
}
.istok-inner-hero--clinic-bg::after,
.istok-inner-hero--tech-bg::after,
.istok-inner-hero--programs-bg::after,
.istok-inner-hero--contacts-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(255, 255, 255, 0.92) 32%,
    rgba(255, 255, 255, 0.55) 52%,
    rgba(255, 255, 255, 0.12) 72%,
    transparent 88%
  );
  pointer-events: none;
}
.istok-inner-hero--news-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, transparent 0%, rgba(244, 245, 247, 0.4) 68%, var(--istok-surface) 100%),
    linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.98) 0%,
      rgba(255, 255, 255, 0.92) 30%,
      rgba(255, 255, 255, 0.5) 54%,
      rgba(255, 255, 255, 0.08) 76%,
      transparent 90%
    );
}
.istok-inner-hero--clinic-bg .istok-container,
.istok-inner-hero--tech-bg .istok-container,
.istok-inner-hero--programs-bg .istok-container,
.istok-inner-hero--contacts-bg .istok-container,
.istok-inner-hero--news-bg .istok-container {
  position: relative;
  z-index: 2;
}
.istok-inner-hero__content {
  max-width: min(560px, 100%);
}
.istok-inner-hero--img {
  display: grid;
  grid-template-columns: 1fr min(42%, 520px);
  gap: 48px;
  align-items: center;
}
.istok-breadcrumbs {
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  margin-bottom: 16px;
  font-size: 0.75rem; font-weight: 600; color: var(--istok-muted);
}
.istok-breadcrumbs a:hover { color: var(--istok-gold); }
.istok-page-title {
  font-family: var(--istok-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--istok-navy);
}
.istok-page-title em { font-style: normal; color: var(--istok-gold); }
.istok-page-lead {
  margin-top: 16px;
  max-width: 56ch;
  font-size: 0.9375rem;
  color: var(--istok-muted);
  line-height: 1.65;
}
.istok-page-lead a { color: var(--istok-gold-dark); font-weight: 700; }
.istok-inner-hero__visual {
  border-radius: var(--istok-radius);
  overflow: hidden;
}
.istok-inner-hero__visual img {
  width: 100%; height: 300px; object-fit: cover;
  mask-image: linear-gradient(90deg, transparent 0%, #000 15%, #000 85%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 15%, #000 85%, transparent 100%);
}

/* Directions page hero */
.istok-services-hero {
  padding: calc(var(--istok-header-h) + 36px) 0 0;
  background: linear-gradient(180deg, #fff 0%, var(--istok-surface) 100%);
}
.istok-services-hero--bg {
  position: relative;
  overflow: hidden;
  min-height: clamp(480px, 58vh, 640px);
  background: #fff;
}
.istok-services-hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.istok-services-hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 72% center;
}
.istok-services-hero--bg::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    90deg,
    rgba(255, 255, 255, 0.98) 0%,
    rgba(255, 255, 255, 0.93) 34%,
    rgba(255, 255, 255, 0.58) 54%,
    rgba(255, 255, 255, 0.14) 74%,
    transparent 90%
  );
  pointer-events: none;
}
.istok-services-hero--bg .istok-container {
  position: relative;
  z-index: 2;
}
.istok-services-hero__content {
  max-width: min(620px, 100%);
  margin-top: 8px;
}
.istok-services-hero__grid {
  display: grid;
  grid-template-columns: 1fr min(44%, 540px);
  gap: clamp(32px, 5vw, 56px);
  align-items: center;
  margin-top: 8px;
}
.istok-services-hero__visual {
  margin: 0;
  border-radius: var(--istok-radius);
  overflow: hidden;
  box-shadow: var(--istok-shadow-sm);
  border: 1px solid var(--istok-border);
}
.istok-services-hero__visual img {
  display: block;
  width: 100%;
  height: clamp(240px, 30vw, 360px);
  object-fit: cover;
}
.istok-services-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 28px;
  margin-top: 28px;
  padding: 0;
  list-style: none;
}
.istok-services-hero__facts li {
  font-size: 0.8125rem;
  color: var(--istok-muted);
  line-height: 1.4;
}
.istok-services-hero__facts strong {
  display: block;
  font-family: var(--istok-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--istok-navy);
  letter-spacing: 0.02em;
}
.istok-services-hero__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 36px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--istok-border);
}
.istok-services-hero--bg .istok-services-hero__nav {
  border-top-color: rgba(27, 36, 51, 0.1);
}
.istok-services-hero__nav a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 18px;
  border-radius: var(--istok-radius-pill);
  border: 1.5px solid var(--istok-border);
  background: #fff;
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--istok-navy);
  transition: border-color 0.2s, background 0.2s, color 0.2s, transform 0.2s var(--istok-ease);
}
.istok-services-hero__nav a:hover {
  border-color: var(--istok-gold);
  background: rgba(197, 160, 89, 0.08);
  color: var(--istok-gold-dark);
  transform: translateY(-2px);
}

.istok-section { padding: 64px 0; }
.istok-section--alt { background: var(--istok-surface); }
.istok-section__head {
  display: flex; align-items: flex-end; justify-content: space-between;
  gap: 20px; margin-bottom: 32px; flex-wrap: wrap;
}
.istok-section__title {
  font-family: var(--istok-serif);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--istok-navy);
}
.istok-section__lead { margin-top: 10px; max-width: 56ch; color: var(--istok-muted); }
.istok-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-weight: 700; font-size: 0.8125rem;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: var(--istok-gold-dark);
}
.istok-link:hover { color: var(--istok-gold); }

/* Services */
.istok-services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.istok-service {
  display: flex; flex-direction: column; gap: 12px;
  padding: 24px;
  border-radius: var(--istok-radius);
  background: #fff;
  border: 1px solid var(--istok-border);
  transition: transform 0.3s var(--istok-ease), box-shadow 0.3s, border-color 0.3s;
  scroll-margin-top: calc(var(--istok-header-h) + 24px);
}
.istok-service:hover {
  transform: translateY(-4px);
  box-shadow: var(--istok-shadow-sm);
  border-color: var(--istok-gold-light);
}
.istok-service__icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 50%;
  border: 1.5px solid var(--istok-gold-light);
  color: var(--istok-gold);
}
.istok-service__icon svg { width: 22px; height: 22px; }
.istok-service h3 { font-size: 1rem; font-weight: 800; color: var(--istok-navy); }
.istok-service p { font-size: 0.875rem; color: var(--istok-muted); flex: 1; line-height: 1.55; }
.istok-service__meta {
  font-size: 0.75rem; font-weight: 700;
  color: var(--istok-gold-dark);
}
.istok-service__meta a { color: inherit; text-decoration: underline; }

/* Gallery */
.istok-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.istok-gallery__item {
  border-radius: var(--istok-radius);
  overflow: hidden;
  border: 1px solid var(--istok-border);
  background: #fff;
  transition: transform 0.3s var(--istok-ease), box-shadow 0.3s;
}
.istok-gallery__item:hover { transform: translateY(-4px); box-shadow: var(--istok-shadow-sm); }
.istok-gallery__item img { width: 100%; height: 180px; object-fit: cover; }
.istok-gallery__item span {
  display: block; padding: 12px 16px;
  font-size: 0.75rem; font-weight: 800;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--istok-navy);
}

/* Price */
.istok-chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.istok-chip {
  min-height: 40px; padding: 0 18px;
  border-radius: var(--istok-radius-pill);
  border: 1.5px solid var(--istok-border);
  background: #fff;
  font-size: 0.6875rem; font-weight: 800;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--istok-muted); cursor: pointer;
  transition: border-color 0.2s, background 0.2s, color 0.2s;
}
.istok-chip.is-active, .istok-chip:hover {
  border-color: var(--istok-gold);
  background: rgba(197, 160, 89, 0.08);
  color: var(--istok-navy);
}
.istok-price-wrap {
  border: 1px solid var(--istok-border);
  border-radius: var(--istok-radius);
  background: #fff;
  overflow: hidden;
}
.istok-price-table { width: 100%; border-collapse: collapse; }
.istok-price-table th, .istok-price-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--istok-border);
  font-size: 0.875rem;
}
.istok-price-table th {
  background: var(--istok-surface);
  font-size: 0.625rem; font-weight: 800;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--istok-muted);
}
.istok-price-table tr:last-child td { border-bottom: none; }
.istok-price-table td:last-child { font-weight: 800; white-space: nowrap; color: var(--istok-navy); }
.istok-price-table tr:hover td { background: rgba(197, 160, 89, 0.04); }

/* Forms */
.istok-card {
  padding: 32px;
  border-radius: var(--istok-radius);
  background: #fff;
  border: 1px solid var(--istok-border);
  box-shadow: var(--istok-shadow-sm);
}
.istok-card__title {
  font-family: var(--istok-serif);
  font-size: 1.35rem; font-weight: 500;
  color: var(--istok-navy);
}
.istok-card__sub { margin-top: 6px; font-size: 0.875rem; color: var(--istok-muted); }
.istok-form { display: grid; gap: 14px; margin-top: 20px; }
.istok-field label {
  display: block; margin-bottom: 6px;
  font-size: 0.625rem; font-weight: 800;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--istok-muted);
}
.istok-field input, .istok-field select, .istok-field textarea {
  width: 100%; min-height: 48px;
  padding: 10px 14px;
  border: 1px solid var(--istok-border);
  border-radius: var(--istok-radius-sm);
  background: var(--istok-surface);
  transition: border-color 0.2s, box-shadow 0.2s;
}
.istok-field textarea { min-height: 100px; resize: vertical; }
.istok-field input:focus, .istok-field select:focus, .istok-field textarea:focus {
  outline: none;
  border-color: var(--istok-gold);
  box-shadow: 0 0 0 3px rgba(197, 160, 89, 0.12);
  background: #fff;
}
.istok-form__note { font-size: 0.75rem; color: var(--istok-muted); line-height: 1.5; }
.istok-form__note a { color: var(--istok-gold-dark); font-weight: 600; }

/* CTA */
.istok-cta {
  padding: 48px;
  border-radius: var(--istok-radius);
  background: linear-gradient(135deg, var(--istok-navy), #243044);
  color: #fff;
  text-align: center;
}
.istok-cta h2 {
  font-family: var(--istok-serif);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.istok-cta p { margin: 14px auto 24px; max-width: 48ch; opacity: 0.85; font-size: 0.9375rem; }

/* Subtle logo watermark on CTA and feedback forms */
.istok-cta,
.istok-card:has(.istok-form),
form.istok-form.istok-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.istok-cta::after,
.istok-card:has(.istok-form)::after,
form.istok-form.istok-card::after {
  content: "";
  position: absolute;
  right: clamp(12px, 4vw, 40px);
  top: 50%;
  width: min(34%, 240px);
  max-width: 240px;
  aspect-ratio: 1;
  transform: translateY(-50%);
  background: url("../images/logo.svg") center / contain no-repeat;
  opacity: 0.055;
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.istok-cta::after {
  opacity: 0.075;
  filter: brightness(2.4) saturate(0.35);
  width: min(30%, 280px);
  max-width: 280px;
  right: clamp(16px, 5vw, 48px);
}
.istok-cta > *,
.istok-card:has(.istok-form) > *,
form.istok-form.istok-card > * {
  position: relative;
  z-index: 1;
}

/* SEO text block */
.istok-seo {
  margin-top: 40px;
  padding: 36px 40px;
  border-radius: var(--istok-radius);
  background: var(--istok-surface);
  border: 1px solid var(--istok-border);
}
.istok-seo h2 {
  font-family: var(--istok-serif);
  font-size: 1.35rem;
  font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--istok-navy);
  margin-bottom: 16px;
}
.istok-seo h3 {
  margin-top: 24px;
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--istok-gold-dark);
}
.istok-seo p {
  margin-top: 12px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--istok-muted);
}
.istok-seo p:first-of-type { margin-top: 0; }
.istok-seo a {
  color: var(--istok-gold-dark);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.istok-seo a:hover { color: var(--istok-gold); }
.istok-seo ul {
  margin-top: 12px;
  padding-left: 20px;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--istok-muted);
}
.istok-seo li + li { margin-top: 6px; }

/* About grid */
.istok-about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}
.istok-bento {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}
.istok-bento__item {
  padding: 24px;
  border-radius: var(--istok-radius);
  background: #fff;
  border: 1px solid var(--istok-border);
}
.istok-bento__item--md { grid-column: span 6; }
.istok-bento__item--accent {
  grid-column: span 6;
  background: linear-gradient(135deg, #d4b06a, var(--istok-gold));
  border-color: transparent; color: #fff;
}
.istok-bento__item--accent p { color: rgba(255,255,255,0.88); }
.istok-bento__item--media {
  grid-column: span 6;
  padding: 0; overflow: hidden;
}
.istok-bento__item--media img { width: 100%; height: 200px; object-fit: cover; }
.istok-bento__caption { padding: 16px 20px; }
.istok-bento__item h3 {
  font-size: 0.9375rem; font-weight: 800;
  letter-spacing: 0.06em; text-transform: uppercase;
  margin-bottom: 8px;
}
.istok-bento__item p { font-size: 0.875rem; color: var(--istok-muted); }

/* Technologies page */
.istok-tech-list { display: grid; gap: 28px; }
.istok-tech {
  display: grid;
  grid-template-columns: min(42%, 460px) 1fr;
  gap: 36px;
  align-items: center;
  padding: 28px;
  border-radius: var(--istok-radius);
  background: #fff;
  border: 1px solid var(--istok-border);
  transition: box-shadow 0.3s var(--istok-ease), transform 0.3s var(--istok-ease);
}
.istok-tech:hover { box-shadow: var(--istok-shadow-sm); transform: translateY(-2px); }
.istok-tech--reverse { direction: rtl; }
.istok-tech--reverse > * { direction: ltr; }
.istok-tech__visual {
  border-radius: calc(var(--istok-radius) - 4px);
  overflow: hidden;
  background: var(--istok-surface);
}
.istok-tech__visual img {
  width: 100%; height: 260px; object-fit: cover;
}
.istok-tech__tag {
  font-size: 0.5625rem; font-weight: 800;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--istok-gold);
}
.istok-tech__title {
  margin-top: 10px;
  font-family: var(--istok-serif);
  font-size: 1.5rem; font-weight: 500;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--istok-navy);
}
.istok-tech__text {
  margin-top: 12px;
  font-size: 0.9375rem;
  color: var(--istok-muted);
  line-height: 1.65;
}
.istok-tech__features {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 18px;
}
.istok-tech__chip {
  padding: 6px 12px;
  border-radius: var(--istok-radius-pill);
  background: rgba(197, 160, 89, 0.1);
  border: 1px solid var(--istok-gold-light);
  font-size: 0.6875rem; font-weight: 700;
  color: var(--istok-gold-dark);
}
.istok-tech-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.istok-tech-stat {
  padding: 24px 20px;
  border-radius: var(--istok-radius);
  background: #fff;
  border: 1px solid var(--istok-border);
  text-align: center;
  transition: border-color 0.25s, transform 0.25s;
}
.istok-tech-stat:hover { border-color: var(--istok-gold-light); transform: translateY(-3px); }
.istok-tech-stat strong {
  display: block;
  font-family: var(--istok-serif);
  font-size: 2rem; font-weight: 500;
  color: var(--istok-gold-dark);
  line-height: 1;
}
.istok-tech-stat span {
  display: block;
  margin-top: 8px;
  font-size: 0.6875rem; font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--istok-muted);
}

.istok-timeline {
  border-left: 2px solid var(--istok-border);
  margin-left: 8px;
}
.istok-timeline__item {
  padding: 0 0 28px 24px;
  position: relative;
}
.istok-timeline__item::before {
  content: "";
  position: absolute; left: -7px; top: 4px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--istok-gold);
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--istok-gold-light);
}
.istok-timeline__year {
  font-weight: 800; font-size: 0.8125rem;
  letter-spacing: 0.1em; color: var(--istok-gold-dark);
}
.istok-timeline__text { margin-top: 6px; color: var(--istok-muted); font-size: 0.9375rem; }

.istok-history-block {
  position: relative;
  overflow: hidden;
}
.istok-history-block__logo {
  position: absolute;
  right: clamp(-12px, 2vw, 24px);
  top: 54%;
  width: min(38vw, 320px);
  max-width: 320px;
  opacity: 0.055;
  transform: translateY(-50%);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}
.istok-history-block__logo img {
  display: block;
  width: 100%;
  height: auto;
}
.istok-history-block .istok-section__title,
.istok-history-block .istok-timeline {
  position: relative;
  z-index: 1;
}
.istok-history-block .istok-timeline {
  max-width: min(620px, 100%);
}

.istok-doc__badge { font-size: 0.6875rem; font-weight: 800; letter-spacing: 0.08em; text-transform: uppercase; color: var(--istok-gold-dark); }

/* Legal pages */
.istok-legal {
  max-width: 720px;
  color: var(--istok-muted);
  line-height: 1.7;
  font-size: 0.9375rem;
}
.istok-legal h2 {
  margin-top: 28px;
  margin-bottom: 10px;
  font-size: 1rem;
  font-weight: 800;
  color: var(--istok-navy);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.istok-legal p + p { margin-top: 12px; }
.istok-legal ul {
  margin: 10px 0 0;
  padding-left: 1.2em;
}
.istok-legal li + li { margin-top: 6px; }
.istok-legal a { color: var(--istok-gold-dark); font-weight: 600; }

/* News & promotions */
.istok-news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 28px;
}
.istok-news-card {
  padding: 24px;
  border-radius: var(--istok-radius);
  background: #fff;
  border: 1px solid var(--istok-border);
}
.istok-news-card--promo {
  background: linear-gradient(160deg, #fff 0%, rgba(197, 160, 89, 0.08) 100%);
  border-color: rgba(197, 160, 89, 0.25);
}
.istok-news-card__tag {
  display: inline-block;
  margin-bottom: 12px;
  padding: 4px 10px;
  border-radius: var(--istok-radius-pill);
  background: var(--istok-gold);
  color: #fff;
  font-size: 0.625rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.istok-news-card__date {
  display: block;
  margin-bottom: 10px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--istok-muted);
}
.istok-news-card h3 {
  font-size: 1rem;
  font-weight: 800;
  color: var(--istok-navy);
  line-height: 1.35;
}
.istok-news-card p {
  margin-top: 10px;
  font-size: 0.875rem;
  color: var(--istok-muted);
  line-height: 1.6;
}
.istok-news-card .istok-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* Contacts */
.istok-contacts-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
.istok-map {
  border-radius: var(--istok-radius);
  overflow: hidden;
  border: 1px solid var(--istok-border);
  position: relative;
  min-height: 360px;
}
.istok-map img { width: 100%; height: 100%; min-height: 360px; object-fit: cover; }
.istok-map--embed {
  width: 100%;
  min-height: 420px;
  background: var(--istok-surface);
}
.istok-map--embed iframe {
  display: block;
  width: 100%;
  height: 420px;
  border: 0;
}
.istok-contacts-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 24px;
}
.istok-map__pin {
  position: absolute; left: 50%; top: 50%;
  width: 44px; height: 44px;
  border-radius: 50% 50% 50% 0;
  background: var(--istok-gold);
  transform: translate(-50%, -100%) rotate(-45deg);
  box-shadow: 0 8px 24px rgba(197, 160, 89, 0.4);
}
.istok-contact-card {
  padding: 22px 24px;
  border-radius: var(--istok-radius-sm);
  background: #fff;
  border: 1px solid var(--istok-border);
  margin-bottom: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.istok-contact-card:hover { border-color: var(--istok-gold-light); box-shadow: var(--istok-shadow-sm); }
.istok-contact-card h3 { font-size: 0.875rem; font-weight: 800; color: var(--istok-navy); }
.istok-contacts-list { display: grid; gap: 12px; margin-top: 14px; }
.istok-contacts-list li {
  display: flex; gap: 12px; align-items: flex-start;
  font-size: 0.875rem; color: var(--istok-muted);
}
.istok-contacts-list svg { width: 18px; height: 18px; color: var(--istok-gold); flex-shrink: 0; margin-top: 2px; }

/* Docs */
.istok-license {
  padding: 18px 22px;
  border-radius: var(--istok-radius-sm);
  background: rgba(197, 160, 89, 0.08);
  border: 1px solid var(--istok-gold-light);
  font-size: 0.875rem; line-height: 1.6;
}
.istok-license strong { color: var(--istok-navy); }
.istok-docs { display: grid; gap: 12px; }
.istok-doc {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 20px 22px;
  border-radius: var(--istok-radius-sm);
  background: #fff;
  border: 1px solid var(--istok-border);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.istok-doc:hover {
  border-color: var(--istok-gold);
  transform: translateX(4px);
  box-shadow: var(--istok-shadow-sm);
}
.istok-doc__info h3 { font-size: 0.9375rem; font-weight: 800; color: var(--istok-navy); }
.istok-doc__info p { margin-top: 4px; font-size: 0.8125rem; color: var(--istok-muted); }
.istok-doc__badge {
  padding: 6px 14px;
  border-radius: var(--istok-radius-pill);
  background: var(--istok-surface);
  font-size: 0.625rem; font-weight: 800;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--istok-gold-dark);
  white-space: nowrap;
}

.istok-steps {
  display: grid; gap: 14px;
  margin-top: 20px;
  counter-reset: step;
  list-style: none; padding: 0;
}
.istok-steps li {
  display: flex; gap: 14px; align-items: flex-start;
  font-size: 0.9375rem; color: var(--istok-muted);
}
.istok-steps li::before {
  counter-increment: step;
  content: counter(step);
  width: 32px; height: 32px; flex-shrink: 0;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(197, 160, 89, 0.12);
  color: var(--istok-gold-dark);
  font-size: 0.8125rem; font-weight: 800;
}

.istok-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

/* Footer */
.istok-footer {
  margin-top: 0;
  padding: 56px 0 24px;
  background: var(--istok-navy);
  color: rgba(255, 255, 255, 0.78);
}
.istok-footer__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 32px;
}
.istok-footer .istok-logo__name { color: #fff; }
.istok-footer .istok-logo__tag { color: rgba(255,255,255,0.5); }
.istok-footer__desc {
  margin-top: 16px;
  font-size: 0.875rem; line-height: 1.6;
  color: rgba(255,255,255,0.55);
}
.istok-footer h4 {
  font-size: 0.625rem; font-weight: 800;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--istok-gold);
  margin-bottom: 16px;
}
.istok-footer__links { display: grid; gap: 10px; }
.istok-footer__links a, .istok-footer__links span {
  font-size: 0.875rem; color: rgba(255,255,255,0.65);
}
.istok-footer__links a:hover { color: #fff; }
.istok-footer__bottom {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  margin-top: 40px; padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.75rem; color: rgba(255,255,255,0.4);
}
.istok-footer__bottom a { color: rgba(255,255,255,0.55); }
.istok-footer__bottom a:hover { color: #fff; }

.istok-modal__icon {
  width: 56px; height: 56px; margin: 0 auto 16px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: rgba(197, 160, 89, 0.12);
  color: var(--istok-gold);
}

/* Responsive */
@media (max-width: 1200px) {
  :root { --istok-container: min(1440px, calc(100% - 40px)); }
  .istok-home__inner { grid-template-columns: minmax(0, 620px) 1fr; }
  .istok-home__content { max-width: 620px; }
  .istok-dock__inner { grid-template-columns: 1fr 1fr; gap: 16px; }
  .istok-dock__item:nth-child(3),
  .istok-dock__item:nth-child(4) { display: none; }
  .istok-doc-grid { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
  .istok-nav { display: none; }
  .istok-home__inner {
    grid-template-columns: 1fr;
    min-height: auto;
  }
  .istok-home__content {
    grid-column: 1;
    max-width: 100%;
  }
  .istok-features--hero {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }
  .istok-home__badge-wrap {
    display: none;
  }
  .istok-features:not(.istok-features--hero) {
    flex-direction: row;
    flex-wrap: wrap;
  }
  .istok-features:not(.istok-features--hero) .istok-feature {
    flex: 1 1 280px;
  }
  .istok-doctors-hero__grid { grid-template-columns: 1fr; }
  .istok-doctors-hero--bg {
    min-height: auto;
    padding-bottom: 40px;
  }
  .istok-doctors-hero--bg::after {
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.97) 0%,
      rgba(255, 255, 255, 0.88) 55%,
      rgba(255, 255, 255, 0.45) 100%
    );
  }
  .istok-doctors-hero__bg img {
    object-position: center 40%;
  }
  .istok-doctors-layout { grid-template-columns: 1fr; }
  .istok-filter { position: static; }
  .istok-benefits__grid { grid-template-columns: repeat(2, 1fr); }
  .istok-services { grid-template-columns: 1fr; }
  .istok-about-grid, .istok-split { grid-template-columns: 1fr; }
  .istok-contacts-cards { grid-template-columns: 1fr; }
  .istok-map--embed iframe { height: 320px; }
  .istok-inner-hero--img { grid-template-columns: 1fr; }
  .istok-inner-hero--clinic-bg,
  .istok-inner-hero--tech-bg,
  .istok-inner-hero--programs-bg,
  .istok-inner-hero--contacts-bg,
  .istok-inner-hero--news-bg {
    min-height: auto;
    padding-bottom: 40px;
  }
  .istok-inner-hero--clinic-bg::after,
  .istok-inner-hero--tech-bg::after,
  .istok-inner-hero--programs-bg::after,
  .istok-inner-hero--contacts-bg::after {
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.97) 0%,
      rgba(255, 255, 255, 0.88) 55%,
      rgba(255, 255, 255, 0.45) 100%
    );
  }
  .istok-inner-hero--news-bg::after {
    background:
      linear-gradient(180deg, rgba(255, 255, 255, 0.2) 0%, rgba(244, 245, 247, 0.85) 70%, var(--istok-surface) 100%),
      linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.72) 100%);
  }
  .istok-inner-hero__bg img {
    object-position: center 35%;
  }
  .istok-services-hero__grid { grid-template-columns: 1fr; }
  .istok-services-hero__visual { order: -1; }
  .istok-services-hero--bg {
    min-height: auto;
  }
  .istok-services-hero--bg::after {
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.97) 0%,
      rgba(255, 255, 255, 0.9) 50%,
      rgba(255, 255, 255, 0.5) 100%
    );
  }
  .istok-services-hero__bg img {
    object-position: center 40%;
  }
  .istok-footer__grid { grid-template-columns: 1fr 1fr; }
  .istok-patient__grid { grid-template-columns: 1fr; }
  .istok-cookies__inner { flex-direction: column; align-items: stretch; }
  .istok-cookies__actions { justify-content: stretch; }
  .istok-bento__item--md, .istok-bento__item--accent, .istok-bento__item--media { grid-column: span 12; }
  .istok-tech { grid-template-columns: 1fr; }
  .istok-tech--reverse { direction: ltr; }
  .istok-tech-stats { grid-template-columns: repeat(2, 1fr); }
  .istok-news-grid { grid-template-columns: 1fr; }
  .istok-history-block__logo {
    width: min(34vw, 220px);
    opacity: 0.04;
    right: -16px;
  }
}

@media (max-width: 640px) {
  .istok-features--hero {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

@media (max-width: 768px) {
  :root {
    --istok-header-h: 72px;
    --istok-dock-h: 0px;
  }
  .istok-phone { display: none; }
  .istok-home { padding-bottom: 32px; }
  .istok-home__bg img {
    object-position: 65% center;
  }
  .istok-home__bg::before {
    background: linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.95) 0%,
      rgba(255, 255, 255, 0.75) 45%,
      rgba(255, 255, 255, 0.35) 100%
    );
  }
  .istok-home__badge-wrap { display: none; }
  .istok-hero-dots {
    top: auto;
    bottom: 28%;
    right: 20px;
    flex-direction: row;
    transform: none;
    gap: 10px;
  }
  .istok-hero-dots__bar { width: 28px; }
  .istok-hero-dots__bar.is-active { width: 44px; }
  .istok-dock { position: static; padding: 24px 16px; animation: none; }
  .istok-dock__inner { grid-template-columns: 1fr; border-radius: var(--istok-radius); }
  .istok-dock__item:nth-child(3),
  .istok-dock__item:nth-child(4) { display: flex; }
  .istok-doc-card { grid-template-columns: 1fr; }
  .istok-doc-card__photo { max-height: 220px; }
  .istok-doc-card__photo img { min-height: 220px; }
  .istok-benefits__grid { grid-template-columns: 1fr; }
  .istok-footer__grid { grid-template-columns: 1fr; }
  .istok-cta { padding: 32px 20px; }
  .istok-cta::after,
  .istok-card:has(.istok-form)::after,
  form.istok-form.istok-card::after {
    width: min(42vw, 160px);
    right: -12px;
    opacity: 0.04;
  }
  .istok-cta::after {
    opacity: 0.055;
  }
  .istok-seo { padding: 24px 20px; }
  .istok-tech-stats { grid-template-columns: 1fr; }
  .istok-price-wrap { overflow-x: auto; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .istok-reveal, .istok-reveal--left, .istok-reveal--right,
  .istok-stagger > *,
  .istok-hero-enter .istok-home__title span {
    opacity: 1 !important; transform: none !important;
    animation: none !important; transition: none !important;
  }
  .istok-home__bg img { animation: none; }
  .istok-home__badge { animation: none; }
  .istok-dock { animation: none; }
}