:root {
  --bg: #050b16;
  --bg-2: #07182a;
  --panel: rgba(8, 22, 39, 0.82);
  --panel-2: rgba(11, 31, 54, 0.74);
  --line: rgba(126, 232, 255, 0.22);
  --line-strong: rgba(126, 232, 255, 0.42);
  --ice: #7ee8ff;
  --ice-2: #baf7ff;
  --blue: #329dff;
  --deep: #0b2140;
  --text: #eefbff;
  --muted: #a8c7d7;
  --muted-2: #7395a7;
  --white: #ffffff;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.45);
  --glow: 0 0 34px rgba(126, 232, 255, 0.34);
  --radius: 24px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 18% 12%, rgba(126, 232, 255, 0.18), transparent 34%),
    radial-gradient(circle at 82% 15%, rgba(50, 157, 255, 0.18), transparent 30%),
    linear-gradient(180deg, rgba(5, 11, 22, 0.78), rgba(5, 11, 22, 0.94)),
    url('../img/ice-bg.svg');
  background-size: cover, cover, cover, cover;
  background-attachment: fixed;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(126, 232, 255, 0.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(126, 232, 255, 0.026) 1px, transparent 1px);
  background-size: 54px 54px;
  mask-image: linear-gradient(to bottom, #000, transparent 82%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(120deg, transparent 0%, rgba(126,232,255,0.06) 45%, transparent 58%);
  transform: translateX(-55%);
  animation: sweep 10s ease-in-out infinite;
}

@keyframes sweep {
  0%, 35% { transform: translateX(-65%); opacity: 0; }
  50% { opacity: 1; }
  75%, 100% { transform: translateX(65%); opacity: 0; }
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(18px);
  background: rgba(5, 11, 22, 0.74);
  border-bottom: 1px solid rgba(126, 232, 255, 0.12);
}

.nav {
  min-height: 82px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: var(--text);
  text-decoration: none;
  min-width: max-content;
}

.brand img {
  width: 48px;
  height: 48px;
  filter: drop-shadow(0 0 20px rgba(126, 232, 255, 0.36));
}

.brand strong {
  display: block;
  letter-spacing: 0.12em;
  font-size: 18px;
}

.brand span {
  display: block;
  font-size: 12px;
  color: var(--muted);
  margin-top: 3px;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.nav-links a,
.lang a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
  padding: 10px 13px;
  border-radius: 999px;
  transition: 0.2s ease;
}

.nav-links a:hover,
.lang a:hover,
.lang a.active {
  color: var(--text);
  border-color: rgba(126, 232, 255, 0.26);
  background: rgba(126, 232, 255, 0.08);
}

.lang {
  display: flex;
  align-items: center;
  gap: 4px;
  padding-left: 8px;
  border-left: 1px solid rgba(126, 232, 255, 0.14);
}

.hero {
  padding: 90px 0 58px;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(330px, 0.8fr);
  gap: 34px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ice-2);
  background: rgba(126, 232, 255, 0.08);
  border: 1px solid rgba(126, 232, 255, 0.22);
  padding: 9px 14px;
  border-radius: 999px;
  box-shadow: 0 0 28px rgba(126, 232, 255, 0.08);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ice);
  box-shadow: 0 0 18px var(--ice);
}

h1 {
  margin: 22px 0 18px;
  font-size: clamp(44px, 7vw, 84px);
  line-height: 0.92;
  letter-spacing: -0.07em;
  text-transform: uppercase;
}

h1 span,
.section-title span {
  color: var(--ice-2);
  text-shadow: var(--glow);
}

.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.65;
  margin: 0 0 30px;
}

.cta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 56px;
  padding: 0 24px;
  border-radius: 16px;
  text-decoration: none;
  font-weight: 950;
  letter-spacing: 0.03em;
  border: 1px solid rgba(126, 232, 255, 0.26);
  transition: transform 0.2s ease, filter 0.2s ease, border 0.2s ease, background 0.2s ease;
  user-select: none;
}

.btn:hover {
  transform: translateY(-3px);
  filter: brightness(1.08);
}

.btn-primary {
  color: #02121d;
  background: linear-gradient(135deg, #baf7ff, #67dcff 42%, #329dff);
  box-shadow: 0 18px 46px rgba(50, 157, 255, 0.26), 0 0 34px rgba(126, 232, 255, 0.24);
}

.btn-secondary {
  color: var(--text);
  background: rgba(126, 232, 255, 0.08);
}

.btn-disabled {
  color: rgba(238, 251, 255, 0.58);
  background: rgba(255,255,255,0.04);
  border-style: dashed;
  cursor: not-allowed;
  pointer-events: none;
}

.hero-card,
.card,
.info-panel {
  background: linear-gradient(180deg, rgba(12, 34, 58, 0.86), rgba(5, 15, 29, 0.86));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero-card {
  padding: 28px;
  overflow: hidden;
  position: relative;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: -70px -80px auto auto;
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: rgba(126, 232, 255, 0.16);
  filter: blur(20px);
}

.status-label {
  color: var(--muted-2);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 12px;
  font-weight: 950;
  margin-bottom: 12px;
}

.phase-list {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.phase {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 12px;
  align-items: flex-start;
  padding: 14px;
  border-radius: 16px;
  background: rgba(126, 232, 255, 0.06);
  border: 1px solid rgba(126, 232, 255, 0.12);
}

.phase-number {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, rgba(186,247,255,0.9), rgba(50,157,255,0.88));
  color: #031827;
  font-weight: 1000;
}

.phase strong {
  display: block;
  color: var(--white);
  margin-bottom: 5px;
}

.phase span {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}

.section {
  padding: 46px 0;
}

.section-title {
  margin: 0 0 16px;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1;
  letter-spacing: -0.04em;
}

.section-intro {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
  max-width: 850px;
  margin: 0 0 26px;
}

.home-strip {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.card {
  padding: 24px;
}

.card h3 {
  margin: 0 0 10px;
  color: var(--ice-2);
  font-size: 22px;
}

.card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.stat {
  padding: 20px;
  border-radius: 18px;
  border: 1px solid rgba(126, 232, 255, 0.14);
  background: rgba(126, 232, 255, 0.055);
}

.stat span {
  display: block;
  color: var(--muted-2);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 950;
  margin-bottom: 8px;
}

.stat strong {
  display: block;
  color: var(--white);
  font-size: 24px;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.timeline-item {
  position: relative;
  padding: 26px;
  border-radius: 22px;
  border: 1px solid rgba(126, 232, 255, 0.18);
  background: linear-gradient(180deg, rgba(126, 232, 255, 0.08), rgba(126, 232, 255, 0.035));
  min-height: 230px;
}

.timeline-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #061b2d;
  background: linear-gradient(135deg, #baf7ff, #55d6ff);
  border-radius: 999px;
  padding: 8px 12px;
  font-weight: 1000;
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.timeline-item h3 {
  margin: 0 0 12px;
  font-size: 25px;
}

.timeline-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.mode-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
}

.mode {
  padding: 28px;
  border-radius: 22px;
  background: rgba(8, 22, 39, 0.72);
  border: 1px solid rgba(126, 232, 255, 0.18);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

.mode-icon {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  margin-bottom: 18px;
  color: #031827;
  background: linear-gradient(135deg, #baf7ff, #329dff);
  font-weight: 1000;
  box-shadow: 0 0 28px rgba(126, 232, 255, 0.24);
}

.mode h3 {
  margin: 0 0 12px;
  color: var(--white);
  font-size: 24px;
}

.mode p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

.info-panel {
  padding: 32px;
  margin-top: 20px;
}

.info-panel h2 {
  margin: 0 0 12px;
  font-size: 34px;
}

.info-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
  font-size: 17px;
}

.cta-panel {
  margin: 54px 0 20px;
  padding: 34px;
  border-radius: 26px;
  border: 1px solid var(--line-strong);
  background:
    radial-gradient(circle at 85% 20%, rgba(126, 232, 255, 0.15), transparent 38%),
    linear-gradient(135deg, rgba(10, 36, 65, 0.92), rgba(4, 12, 25, 0.92));
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  box-shadow: var(--shadow);
}

.cta-panel h2 {
  margin: 0 0 8px;
  font-size: 34px;
}

.cta-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.site-footer {
  padding: 36px 0 52px;
  color: var(--muted-2);
  border-top: 1px solid rgba(126, 232, 255, 0.12);
  margin-top: 46px;
}

.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.footer-row a {
  color: var(--ice-2);
  text-decoration: none;
  font-weight: 900;
}

@media (max-width: 980px) {
  .hero-grid,
  .home-strip,
  .timeline,
  .mode-grid,
  .info-grid {
    grid-template-columns: 1fr;
  }

  .info-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cta-panel {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .lang {
    border-left: 0;
    padding-left: 0;
  }

  .hero {
    padding-top: 52px;
  }

  .btn {
    width: 100%;
  }

  .cta-row {
    width: 100%;
  }

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

  h1 {
    font-size: clamp(42px, 15vw, 68px);
  }
}