:root {
  --bg: #f4f7fc;
  --bg-elevated: #ffffff;
  --ink: #0b1f3a;
  --muted: #4a6280;
  --line: rgba(11, 61, 145, 0.14);
  --blue: #0b5fff;
  --blue-deep: #0747c6;
  --blue-soft: #dce8ff;
  --blue-glow: rgba(11, 95, 255, 0.28);
  --hero-gradient: linear-gradient(145deg, #e8f0ff 0%, #f4f7fc 42%, #dce8ff 100%);
  --shadow: 0 18px 50px rgba(11, 47, 110, 0.12);
  --radius: 18px;
  --font-display: "Space Grotesk", "Outfit", sans-serif;
  --font-body: "Outfit", sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

[data-theme="dark"] {
  --bg: #07111f;
  --bg-elevated: #0d1a2e;
  --ink: #eef4ff;
  --muted: #9db0c9;
  --line: rgba(140, 180, 255, 0.16);
  --blue: #4d8dff;
  --blue-deep: #2f6fff;
  --blue-soft: #132748;
  --blue-glow: rgba(77, 141, 255, 0.35);
  --hero-gradient: linear-gradient(155deg, #0a1730 0%, #07111f 48%, #102744 100%);
  --shadow: 0 22px 60px rgba(0, 0, 0, 0.45);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  width: 100%;
  max-width: 100%;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img,
video {
  max-width: 100%;
  height: auto;
}

body.modal-open {
  overflow: hidden;
}

.page-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: var(--hero-gradient);
  transition: background 0.4s var(--ease);
}

.page-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 12% 18%, var(--blue-glow), transparent 34%),
    radial-gradient(circle at 88% 12%, rgba(11, 95, 255, 0.12), transparent 28%),
    radial-gradient(circle at 70% 78%, rgba(7, 71, 198, 0.1), transparent 36%);
  pointer-events: none;
}

a {
  color: inherit;
}

code {
  font-size: 0.92em;
  padding: 0.1em 0.35em;
  border-radius: 6px;
  background: var(--blue-soft);
}

.tg-safe {
  display: none;
  height: 0;
}

.topbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(env(safe-area-inset-top, 0px) + 0.75rem) 1.25rem 0.75rem;
  /* solid bg — backdrop-filter breaks position:fixed in Safari/iOS */
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

html.is-telegram .topbar {
  position: relative;
  top: auto;
  padding: 0.5rem 1.15rem;
}

main {
  padding-top: 0;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  line-height: 1.3;
  text-decoration: none;
  color: var(--ink);
}

.theme-toggle {
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--bg-elevated) 80%, transparent);
  color: var(--ink);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: transform 0.25s var(--ease), border-color 0.25s var(--ease);
}

.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: color-mix(in srgb, var(--blue) 45%, var(--line));
}

.theme-toggle__icon {
  width: 20px;
  height: 20px;
  display: none;
}

.theme-toggle__icon svg {
  width: 100%;
  height: 100%;
}

html:not([data-theme="dark"]) .theme-toggle__icon--moon,
html[data-theme="dark"] .theme-toggle__icon--sun {
  display: block;
}

.hero {
  position: relative;
  display: grid;
  align-content: start;
  padding: 1.25rem 1.25rem 0.5rem;
  overflow: visible;
}

.hero__copy {
  position: relative;
  z-index: 1;
  max-width: 40rem;
}

.brand-mark,
.hero h1,
.section__head h2,
.cta-band h2,
.modal__panel h2,
.logo {
  /* Safari + display fonts: glyphs can paint outside the em-box */
  overflow: visible !important;
  -webkit-font-smoothing: auto;
  text-rendering: optimizeLegibility;
}

.brand-mark {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.2;
  color: var(--blue);
  padding: 0.1em 0.06em 0.15em 0;
}

.hero h1 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.5;
  padding: 0.1em 0.06em 0.18em 0;
}

.hero__lead {
  margin: 0 0 1.15rem;
  max-width: 34rem;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.55;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hero__visual {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero__glow {
  position: absolute;
  right: -8%;
  top: 10%;
  width: min(58vw, 520px);
  aspect-ratio: 1;
  border-radius: 50%;
  background: radial-gradient(circle, var(--blue-glow), transparent 68%);
  animation: pulse 5.5s ease-in-out infinite;
}

.hero__orb {
  position: absolute;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--blue) 35%, transparent);
  background: color-mix(in srgb, var(--blue) 8%, transparent);
}

.hero__orb--1 {
  width: min(42vw, 340px);
  aspect-ratio: 1;
  right: 6%;
  top: 22%;
  animation: float 8s ease-in-out infinite;
}

.hero__orb--2 {
  width: min(22vw, 160px);
  aspect-ratio: 1;
  right: 28%;
  bottom: 18%;
  animation: float 6.5s ease-in-out infinite reverse;
}

@media (max-width: 767px) {
  .hero__orb--1,
  .hero__orb--2 {
    display: none;
  }

  .hero__glow {
    width: 220px;
    top: -20px;
    right: -40px;
    opacity: 0.65;
  }

  .section {
    padding: 1.1rem 1.25rem;
  }

  .section__head {
    margin-bottom: 1rem;
  }

  .hero {
    padding-top: 1rem;
  }

  .hero h1 {
    margin-top: 0;
  }
}

.btn {
  appearance: none;
  border: none;
  border-radius: 14px;
  padding: 0.95rem 1.35rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.btn--primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 10px 28px color-mix(in srgb, var(--blue) 35%, transparent);
}

.btn--primary:hover {
  background: var(--blue-deep);
  transform: translateY(-2px);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--primary:disabled {
  opacity: 0.65;
  cursor: wait;
  transform: none;
}

.btn--block {
  width: 100%;
}

.section {
  padding: 1.5rem 1.25rem;
  max-width: 920px;
  margin: 0 auto;
}

.section__head {
  margin-bottom: 1.75rem;
}

.section__head h2,
.cta-band h2,
.modal__panel h2 {
  margin: 0 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.5;
  padding: 0.1em 0.06em 0.18em 0;
}

.section__head p,
.cta-band p {
  margin: 0;
  color: var(--muted);
  max-width: 36rem;
  font-size: 0.98rem;
  line-height: 1.55;
}

.video-section {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
}

.video-section .section__head {
  margin-bottom: 1rem;
}

.video-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  animation: fade-up 1s var(--ease) 0.1s both;
}

.video-frame video {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #0a1628;
}

.video-hint {
  margin: 0;
  padding: 0.85rem 1rem;
  font-size: 0.92rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.social-icons {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1.5rem 1.75rem;
}

.social-icons__link {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  color: var(--ink);
  text-decoration: none;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.social-icons__link svg {
  width: 48px;
  height: 48px;
  max-width: 48px;
  display: block;
  flex-shrink: 0;
}

.social-icons__link:hover {
  color: var(--blue);
  transform: translateY(-2px);
}

.cta-band {
  text-align: center;
  max-width: 640px;
  padding-bottom: 3rem;
}

.cta-band .btn {
  margin-top: 1.4rem;
}

.footer {
  padding: 1.5rem 1.25rem 2.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.modal[hidden] {
  display: none;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 1rem;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 12, 24, 0.55);
  backdrop-filter: blur(6px);
  animation: fade 0.25s var(--ease);
}

.modal__panel {
  position: relative;
  z-index: 1;
  width: min(100%, 420px);
  border-radius: 22px;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.6rem 1.4rem 1.45rem;
  animation: pop 0.35s var(--ease);
}

.modal__close {
  position: absolute;
  top: 0.7rem;
  right: 0.85rem;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.modal__close:hover {
  color: var(--ink);
  background: var(--blue-soft);
}

.modal__lead {
  margin: 0 0 1.2rem;
  color: var(--muted);
}

.contact-tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.4rem;
  padding: 0.35rem;
  margin-bottom: 1.1rem;
  border-radius: 14px;
  background: var(--blue-soft);
}

.contact-tab {
  border: none;
  border-radius: 11px;
  padding: 0.7rem 0.5rem;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.contact-tab.is-active {
  background: var(--bg-elevated);
  color: var(--ink);
  box-shadow: 0 4px 14px rgba(11, 47, 110, 0.1);
}

.field {
  display: grid;
  gap: 0.4rem;
  margin-bottom: 1rem;
  font-size: 0.92rem;
  font-weight: 500;
}

/* display:grid on .field overrides native [hidden] — force hide inactive tab panel */
.field[hidden],
[hidden] {
  display: none !important;
}

.field input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.85rem 0.95rem;
  font: inherit;
  font-size: 16px;
  color: var(--ink);
  background: var(--bg);
  outline: none;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.field input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--blue) 22%, transparent);
}

.form-error {
  margin: -0.35rem 0 0.9rem;
  color: #d92d20;
  font-size: 0.9rem;
}

.modal__success {
  text-align: center;
  padding: 0.5rem 0.25rem 0.25rem;
}

.modal__success p {
  color: var(--muted);
  margin: 0 0 1.25rem;
}

@keyframes fade-up {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 0.7;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.06);
  }
}

@keyframes fade {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes pop {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@media (min-width: 768px) {
  .topbar {
    position: fixed;
    top: 0;
    padding: 1rem 2rem;
    transform: translate3d(0, 0, 0);
    -webkit-transform: translate3d(0, 0, 0);
  }

  main {
    padding-top: 4.75rem;
  }

  .brand-mark {
    font-size: 4.75rem;
  }

  .topbar,
  .hero,
  .section,
  .footer {
    padding-left: 2rem;
    padding-right: 2rem;
  }

  .hero {
    min-height: calc(100svh - 76px);
    align-content: center;
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  .hero h1 {
    font-size: 2.1rem;
  }

  .hero__lead,
  .section__head p,
  .cta-band p {
    font-size: 1.05rem;
  }

  .section__head h2,
  .cta-band h2,
  .modal__panel h2 {
    font-size: 1.85rem;
  }

  .section {
    padding-top: 4rem;
    padding-bottom: 4rem;
  }

  .video-section {
    margin-top: -15vh;
    padding-top: 1.2rem;
  }

  .video-section .section__head {
    margin-bottom: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}