.landing-page {
  --polish-navy: #071b3d;
  --polish-blue: #2F62DA;
  --polish-ice: #F2F7FF;
  background:
    radial-gradient(circle at 4% 7%, rgba(47, 98, 218, .16), transparent 24%),
    radial-gradient(circle at 96% 31%, rgba(100, 217, 202, .1), transparent 21%),
    linear-gradient(180deg, #f8fbff 0%, #eff5fb 52%, #f7faff 100%);
}

.landing-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  width: 0;
  height: 3px;
  background: linear-gradient(90deg, #2F62DA, #65cfbc);
  box-shadow: 0 0 14px rgba(47, 98, 218, .58);
  transition: width .1s linear;
  pointer-events: none;
}

.landing-page .site-header.is-scrolled {
  background: rgba(248, 251, 255, .9);
  border-bottom-color: rgba(15, 55, 109, .07);
  box-shadow: 0 12px 38px rgba(8, 39, 84, .08);
}
.landing-page .site-header .btn { min-height: var(--btn-h, 40px); padding-inline: 19px; }
.landing-page .site-header .btn--ghost { background: rgba(255,255,255,.64); }
.landing-page .brand .ka-mark { transition: transform .35s cubic-bezier(0.25, 1, 0.5, 1); }
.landing-page .brand:hover .ka-mark { transform: translateY(-1px); }

.landing-page .hero { padding: 42px 0 52px; }
.landing-page .hero__grid { gap: 18px; }
.landing-page .hero__copy,
.landing-page .hero__visual { border-radius: 36px; }
.landing-page .hero__copy {
  isolation: isolate;
  padding: clamp(34px, 4.2vw, 54px);
  background:
    radial-gradient(circle at 85% 12%, rgba(47, 98, 218, .18), transparent 31%),
    linear-gradient(145deg, rgba(255,255,255,.98), rgba(235,245,255,.94));
  border-color: #E5EFFF;
  box-shadow: 0 28px 70px rgba(10, 49, 102, .12);
}
.landing-page .hero__copy::before {
  content: "";
  position: absolute;
  z-index: -1;
  right: -74px;
  bottom: -86px;
  width: 230px;
  height: 230px;
  border: 36px solid rgba(47, 98, 218, .055);
  border-radius: 50%;
}
.landing-page .hero__copy::after {
  content: "";
  position: absolute;
  z-index: -1;
  top: 30px;
  right: 36px;
  width: 64px;
  height: 64px;
  opacity: .45;
  background-image: radial-gradient(circle, #2F62DA 2px, transparent 2.5px);
  background-size: 12px 12px;
}
.landing-page .hero__eyebrow {
  border: 1px solid #E5EFFF;
  background: rgba(226,240,255,.75);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.7);
}
.landing-page .hero h1 {
  max-width: 700px;
  color: #0a224b;
  font-size: clamp(40px, 5.3vw, 76px);
  letter-spacing: -.055em;
  text-wrap: balance;
}
.landing-page .hero h1 .word:nth-last-child(-n+2) { color: #2F62DA; }
.landing-page .hero__actions .btn--primary { box-shadow: 0 16px 34px rgba(47,98,218,.3); }
.landing-page .hero__actions .btn--ghost { background: rgba(255,255,255,.82); }
.landing-page .hero__facts { gap: 9px; }
.landing-page .fact-card {
  min-height: 132px;
  padding: 18px 16px;
  border-color: #E5EFFF;
  background: rgba(255,255,255,.64);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.9);
  transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.landing-page .fact-card:hover { transform: translateY(-3px); background: #fff; box-shadow: 0 14px 28px rgba(12,55,116,.1); }
.landing-page .fact-card strong { color: #254EAE; }
.landing-page .hero__visual {
  border: 1px solid rgba(255,255,255,.24);
  box-shadow: 0 28px 70px rgba(5,31,73,.24);
}
.landing-page .hero__visual::after {
  content: "";
  position: absolute;
  inset: 10px;
  z-index: 4;
  border: 1px solid rgba(255,255,255,.2);
  border-radius: 28px;
  pointer-events: none;
}
.landing-page .hero__visual img { transform: scale(1.025); }
.landing-page .hero__note,
.landing-page .hero__quote { border-color: rgba(255,255,255,.24); background: rgba(3,25,61,.36); box-shadow: 0 14px 38px rgba(0,0,0,.13); }
.landing-page .hero__badge { background: rgba(222,246,255,.18); border-color: rgba(255,255,255,.3); backdrop-filter: blur(14px); }

.landing-page .join-banner__panel {
  overflow: hidden;
  border-color: #E5EFFF;
  background:
    radial-gradient(circle at 7% 130%, rgba(47,98,218,.2), transparent 34%),
    linear-gradient(125deg, rgba(255,255,255,.98), rgba(226,241,255,.96));
  box-shadow: 0 22px 58px rgba(10,50,104,.1);
}
.landing-page .join-banner__panel::after {
  content: "";
  position: absolute;
  right: -35px;
  top: -70px;
  width: 210px;
  height: 210px;
  border: 30px solid rgba(47, 98, 218, .05);
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
}
/* Декоративное кольцо — под содержимым баннера, не поверх кнопки */
.landing-page .join-banner__text,
.landing-page .join-banner__actions {
  position: relative;
  z-index: 1;
}

.landing-page .section { padding-block: clamp(48px, 6vw, 78px); }
.landing-page .section__head { max-width: 850px; }
.landing-page .section__head h2 { text-wrap: balance; }
.landing-page .section__eyebrow { color: #2A58C4; }
.landing-page .section__eyebrow::before { width: 28px; }

.landing-page .cta-definition,
.landing-page .card,
.landing-page .metric,
.landing-page .region,
.landing-page .faq details {
  border-color: #E5EFFF;
  background: rgba(255,255,255,.82);
  box-shadow: 0 14px 42px rgba(9,43,91,.07);
  backdrop-filter: blur(8px);
}
.landing-page .card,
.landing-page .metric {
  --pointer-x: 50%;
  --pointer-y: 50%;
  position: relative;
  overflow: hidden;
}
.landing-page .card::before,
.landing-page .metric::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0;
  background: radial-gradient(260px circle at var(--pointer-x) var(--pointer-y), rgba(47,98,218,.14), transparent 62%);
  transition: opacity .25s ease;
  pointer-events: none;
}
.landing-page .card.is-pointer::before,
.landing-page .metric.is-pointer::before { opacity: 1; }
.landing-page .card::after {
  content: "";
  position: absolute;
  left: 24px;
  right: 24px;
  top: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(47,98,218,.52), transparent);
  transform: scaleX(0);
  transition: transform .3s ease;
}
.landing-page .card:hover::after { transform: scaleX(1); }
.landing-page .card:hover { transform: translateY(-6px); box-shadow: 0 22px 52px rgba(10,54,116,.13); }
.landing-page .card__icon { box-shadow: inset 0 1px 0 rgba(255,255,255,.7); }

.landing-page .metrics { padding-block: 28px 64px; }
.landing-page .metric { min-height: 220px; transition: transform .25s ease, box-shadow .25s ease; }
.landing-page .metric:nth-child(2),
.landing-page .metric:nth-child(4) { background: linear-gradient(150deg, rgba(240,248,255,.94), rgba(255,255,255,.92)); }
.landing-page .metric:hover { transform: translateY(-5px); box-shadow: 0 22px 52px rgba(10,54,116,.12); }
.landing-page .metric__icon { border-radius: 50%; }

.landing-page .corpus-photo,
.landing-page .feature__media,
.landing-page .gallery-item { outline: 1px solid rgba(255,255,255,.5); outline-offset: -8px; }
.landing-page .gallery-item img { transition: transform .65s cubic-bezier(.2,.8,.2,1), filter .35s ease; }
.landing-page .gallery-item:hover img { transform: scale(1.055); filter: saturate(1.08) contrast(1.02); }

.landing-page .science-teaser,
.landing-page .cta__panel {
  border: 1px solid rgba(255,255,255,.13);
  background:
    radial-gradient(circle at 88% 15%, rgba(102,218,197,.18), transparent 24%),
    linear-gradient(145deg, #092759, #103e84);
  box-shadow: 0 28px 72px rgba(5,35,80,.2);
}
.landing-page .science-teaser { overflow: hidden; }
.landing-page .science-teaser::after { content: ""; position: absolute; width: 180px; height: 180px; right: -72px; bottom: -94px; border: 25px solid rgba(149,231,208,.08); border-radius: 50%; }

.landing-page .landing-video-story__media { border: 1px solid rgba(255,255,255,.42); box-shadow: 0 28px 70px rgba(7,43,93,.19); }
.landing-page .landing-video-story__play { box-shadow: 0 0 0 10px rgba(255,255,255,.12), 0 14px 38px rgba(0,0,0,.2); }

.landing-page .faq { max-width: 940px; }
.landing-page .faq details { padding: 19px 22px; transition: border-color .2s ease, background .2s ease, transform .2s ease; }
.landing-page .faq details:hover { transform: translateX(3px); border-color: #E5EFFF; }
.landing-page .faq details[open] { border-color: #E5EFFF; background: rgba(250,253,255,.98); }
.landing-page .faq details[open] summary { color: #254EAE; }

.landing-page .site-footer { padding-top: 48px; }
.landing-page :focus-visible { outline: 3px solid rgba(47,98,218,.62); outline-offset: 3px; }

@media (max-width: 760px) {
  .landing-page .hero { padding-top: 24px; }
  .landing-page .hero__copy,
  .landing-page .hero__visual { border-radius: 26px; }
  .landing-page .hero__copy { padding: 27px 23px; }
  .landing-page .hero h1 { font-size: clamp(40px, 12vw, 58px); }
  .landing-page .hero__copy::after { display: none; }
  .landing-page .hero__facts { grid-template-columns: 1fr; }
  .landing-page .fact-card { min-height: 0; display: grid; grid-template-columns: 80px 1fr; align-items: center; gap: 10px; }
  .landing-page .fact-card strong { margin: 0; }
  .landing-page .hero__visual::after { inset: 7px; border-radius: 20px; }
  .landing-page .metric { min-height: 0; }
  .landing-page .section { padding-block: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  .landing-progress { transition: none; }
}