:root {
  --sy-bg-deep: #0B0F2A;
  --sy-bg-electric: #2E37A4;
  --sy-bg-bright: #4B5EFC;
  --sy-accent-orange: #FF6A3D;
  --sy-accent-warm: #FFB86B;
  --sy-cyan: #00E5FF;
  --sy-light: #F5F7FF;
  --sy-text: #E6E9FF;
  --sy-muted: #B0B7D0;
  --sy-success: #3DDC84;
  --sy-font-display: "Orbitron", "Rajdhani", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --sy-font-body: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --sy-radius: 16px;
  --sy-shadow: 0 18px 40px rgba(5, 8, 28, 0.35);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(75, 94, 252, 0.28), transparent 60%),
    radial-gradient(900px 500px at 8% 25%, rgba(0, 229, 255, 0.08), transparent 55%),
    var(--sy-bg-deep);
  color: var(--sy-text);
  font-family: var(--sy-font-body);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4 {
  margin: 0 0 1rem;
  color: var(--sy-text);
  font-family: var(--sy-font-display);
  font-weight: 800;
  line-height: 1.2;
}

p { margin: 0 0 1rem; }

ul, ol { margin: 0; padding: 0; list-style: none; }

a { color: var(--sy-cyan); text-decoration: none; }

img { display: block; max-width: 100%; }

::selection { background: rgba(0, 229, 255, 0.35); color: #fff; }

:focus { outline: none; }

:focus-visible { outline: 3px solid var(--sy-cyan); outline-offset: 3px; border-radius: 4px; }

.sy-skip {
  position: absolute;
  left: 12px;
  top: -100px;
  z-index: 1500;
  padding: 12px 20px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--sy-accent-orange), var(--sy-accent-warm));
  color: #1a1030;
  font-weight: 800;
  transition: top 0.2s ease;
}

.sy-skip:focus { top: 12px; }

.sy-header {
  position: relative;
  z-index: 100;
  border-bottom: 1px solid rgba(0, 229, 255, 0.28);
  background: rgba(11, 15, 42, 0.9);
  backdrop-filter: blur(12px);
}

.sy-header__inner {
  width: min(1320px, 100%);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 40px);
}

.sy-header__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0 12px;
}

.sy-brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  color: #fff;
}

.sy-brand:hover { color: #fff; }

.sy-brand__emblem {
  display: inline-grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 14px 14px 14px 6px;
  background: linear-gradient(135deg, var(--sy-bg-bright), var(--sy-bg-electric));
  color: #fff;
  font-family: var(--sy-font-display);
  font-size: 1.3rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  box-shadow: 0 0 0 1px rgba(0, 229, 255, 0.4), 0 12px 30px rgba(46, 55, 164, 0.45);
  transform: skew(-6deg);
}

.sy-brand__copy { display: flex; flex-direction: column; line-height: 1.25; }

.sy-brand__name {
  color: #fff;
  font-family: var(--sy-font-display);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.06em;
}

.sy-brand__tagline {
  padding-top: 4px;
  color: var(--sy-muted);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
}

.sy-header__quick {
  display: flex;
  align-items: center;
  gap: 18px;
}

.sy-header__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border: 1px solid rgba(61, 220, 132, 0.25);
  border-radius: 999px;
  background: rgba(61, 220, 132, 0.08);
  color: var(--sy-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.sy-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--sy-success);
  box-shadow: 0 0 12px var(--sy-success);
  animation: sy-pulse 2s ease-in-out infinite;
}

@keyframes sy-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.82); }
}

.sy-link-cta {
  border-bottom: 1px dashed rgba(255, 184, 107, 0.5);
  color: var(--sy-accent-warm);
  font-size: 0.82rem;
  font-weight: 700;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.sy-link-cta:hover { border-bottom-color: #fff; color: #fff; }

.sy-header__navrow {
  display: flex;
  align-items: center;
  gap: 24px;
  padding: 10px 0 12px;
  border-top: 1px solid rgba(230, 233, 255, 0.08);
}

.sy-nav { flex: 1; min-width: 0; }

.sy-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sy-nav__item { position: relative; }

.sy-nav__item + .sy-nav__item { margin-left: 8px; }

.sy-nav__item + .sy-nav__item::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 50%;
  width: 1px;
  height: 16px;
  background: linear-gradient(transparent, rgba(0, 229, 255, 0.4), transparent);
  transform: translateY(-50%);
}

.sy-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 8px 14px;
  border-radius: 999px;
  color: var(--sy-text);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  transition: background 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

.sy-nav__link:hover {
  color: #fff;
  background: rgba(75, 94, 252, 0.18);
  box-shadow: inset 0 0 0 1px rgba(0, 229, 255, 0.2);
}

.sy-nav__link:active { background: rgba(46, 55, 164, 0.4); }

.sy-nav__link[aria-current="page"] {
  color: #fff;
  background: linear-gradient(135deg, rgba(75, 94, 252, 0.95), rgba(46, 55, 164, 0.95));
  box-shadow: 0 0 0 1px rgba(0, 229, 255, 0.35), 0 8px 30px rgba(46, 55, 164, 0.3);
}

.sy-nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 12px;
  background: rgba(75, 94, 252, 0.12);
  color: var(--sy-text);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.sy-nav-toggle:hover {
  border-color: var(--sy-cyan);
  background: rgba(75, 94, 252, 0.22);
}

.sy-nav-toggle__box { position: relative; width: 18px; height: 14px; }

.sy-nav-toggle__box::before,
.sy-nav-toggle__box::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--sy-cyan);
  transition: transform 0.3s ease, top 0.3s ease, bottom 0.3s ease, box-shadow 0.3s ease;
}

.sy-nav-toggle__box::before { top: 0; box-shadow: 0 6px 0 var(--sy-cyan); }

.sy-nav-toggle__box::after { bottom: 0; }

.sy-nav-toggle[aria-expanded="true"] .sy-nav-toggle__box::before {
  top: 6px;
  box-shadow: none;
  transform: rotate(45deg);
}

.sy-nav-toggle[aria-expanded="true"] .sy-nav-toggle__box::after {
  bottom: 6px;
  transform: rotate(-45deg);
}

.sy-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 12px;
  color: var(--sy-text);
  font-family: var(--sy-font-display), var(--sy-font-body);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.sy-btn--primary {
  background: linear-gradient(135deg, var(--sy-accent-orange), var(--sy-accent-warm));
  color: #210b1a;
  box-shadow: 0 10px 30px rgba(255, 106, 61, 0.28);
}

.sy-btn--primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 16px 40px rgba(255, 106, 61, 0.38);
}

.sy-btn--compact {
  padding: 9px 16px;
  border-radius: 10px;
  font-size: 0.85rem;
}

.sy-scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1200;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--sy-cyan), var(--sy-bg-bright) 55%, var(--sy-accent-orange));
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.6);
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

.sy-container {
  width: min(1320px, 92vw);
  margin-inline: auto;
}

.sy-section {
  position: relative;
  padding: clamp(3rem, 7vw, 6rem) 0;
}

.sy-section--light {
  background: var(--sy-light);
  color: #1a2040;
}

.sy-section--light h1,
.sy-section--light h2,
.sy-section--light h3 { color: #0b0f2a; }

.sy-section__head {
  max-width: 760px;
  margin-bottom: clamp(1.5rem, 3vw, 3rem);
}

.sy-section__title {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 2.5vw, 2rem);
}

.sy-section__lead { color: var(--sy-muted); font-size: 1.05rem; }

.sy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(var(--sy-grid-min, 260px), 100%), 1fr));
  gap: 24px;
}

.sy-card {
  position: relative;
  overflow: hidden;
  padding: 24px;
  border: 1px solid rgba(0, 229, 255, 0.18);
  border-radius: var(--sy-radius);
  background: linear-gradient(145deg, rgba(75, 94, 252, 0.14), rgba(11, 15, 42, 0.55));
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.sy-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 46%;
  height: 3px;
  border-radius: 0 0 6px 0;
  background: linear-gradient(90deg, var(--sy-accent-orange), var(--sy-cyan));
}

.sy-card:hover {
  border-color: rgba(0, 229, 255, 0.35);
  transform: translateY(-4px);
  box-shadow: var(--sy-shadow);
}

.sy-card__body { color: var(--sy-muted); }

.sy-badge {
  display: inline-flex;
  align-items: center;
  width: max-content;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid rgba(0, 229, 255, 0.3);
  border-radius: 999px;
  background: rgba(0, 229, 255, 0.1);
  color: var(--sy-cyan);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.sy-breadcrumb { margin: 0 0 24px; font-size: 0.88rem; }

.sy-breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.sy-breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--sy-muted);
}

.sy-breadcrumb__item + .sy-breadcrumb__item::before {
  content: "/";
  display: inline-block;
  color: rgba(176, 183, 208, 0.5);
}

.sy-breadcrumb__link { color: var(--sy-muted); transition: color 0.2s ease; }

.sy-breadcrumb__link:hover { color: var(--sy-cyan); }

.sy-breadcrumb__current { color: var(--sy-text); font-weight: 700; }

.sy-media {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: var(--sy-radius);
  background: linear-gradient(135deg, rgba(46, 55, 164, 0.5), rgba(11, 15, 42, 0.7));
}

.sy-media::before {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.sy-media > img,
.sy-media > .sy-media__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sy-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(90deg, rgba(0, 229, 255, 0.14), transparent 30%, transparent 70%, rgba(255, 106, 61, 0.1));
  border: 1px solid rgba(0, 229, 255, 0.15);
  pointer-events: none;
  mix-blend-mode: screen;
}

.sy-media--4-3::before { padding-top: 75%; }

.sy-media--square::before { padding-top: 100%; }

.sy-prose {
  max-width: 780px;
  color: var(--sy-muted);
  font-size: 1rem;
  line-height: 1.9;
}

.sy-prose h2,
.sy-prose h3 {
  margin-top: 2.2rem;
  color: var(--sy-text);
}

.sy-prose a {
  border-bottom: 1px solid rgba(0, 229, 255, 0.3);
  color: var(--sy-cyan);
}

.sy-divider {
  height: 2px;
  margin: 2rem 0;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--sy-cyan), transparent);
  opacity: 0.5;
}

.sy-footer {
  position: relative;
  margin-top: auto;
  border-top: 1px solid rgba(0, 229, 255, 0.25);
  background: linear-gradient(180deg, rgba(11, 15, 42, 1) 0%, #06081c 100%);
  color: var(--sy-text);
}

.sy-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--sy-cyan) 20%, var(--sy-bg-bright) 50%, var(--sy-accent-orange) 80%, transparent);
  opacity: 0.8;
}

.sy-footer__inner {
  width: min(1320px, 100%);
  margin-inline: auto;
  padding: 72px clamp(20px, 4vw, 40px) 40px;
}

.sy-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
  gap: 48px;
  padding-bottom: 48px;
}

.sy-footer__brand { max-width: 420px; }

.sy-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  font-family: var(--sy-font-display);
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.sy-footer__logo:hover { color: #fff; }

.sy-footer__logo-mark {
  display: inline-block;
  padding: 3px 10px;
  border: 1px solid rgba(255, 106, 61, 0.4);
  border-radius: 999px;
  background: rgba(255, 106, 61, 0.12);
  color: var(--sy-accent-warm);
  font-size: 0.82rem;
}

.sy-footer__lead {
  max-width: 38ch;
  margin-top: 18px;
  color: var(--sy-muted);
  font-size: 0.95rem;
  line-height: 1.8;
}

.sy-footer__trust {
  margin-top: 18px;
  padding: 14px 16px;
  border-left: 3px solid var(--sy-success);
  border-radius: 0 12px 12px 0;
  background: rgba(61, 220, 132, 0.06);
  color: var(--sy-muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

.sy-footer__col { min-width: 0; }

.sy-footer__heading {
  margin: 0 0 16px;
  color: #fff;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.sy-footer__list { list-style: none; }

.sy-footer__list li + li { margin-top: 6px; }

.sy-footer__link {
  display: inline-block;
  position: relative;
  padding: 6px 0;
  color: var(--sy-muted);
  font-size: 0.92rem;
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.sy-footer__link::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 5px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--sy-accent-orange), var(--sy-cyan));
  transition: width 0.2s ease;
}

.sy-footer__link:hover { color: #fff; padding-left: 10px; }

.sy-footer__link:hover::before { width: 100%; }

.sy-footer__contact { max-width: 360px; }

.sy-footer__line {
  margin: 0 0 10px;
  color: var(--sy-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.sy-footer__meta {
  margin-top: 16px;
  color: var(--sy-muted);
  font-size: 0.82rem;
}

.sy-footer__icp {
  display: inline-block;
  margin-top: 12px;
  padding: 5px 14px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--sy-text);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
}

@media (max-width: 1024px) {
  .sy-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .sy-footer__brand {
    grid-column: 1 / -1;
    max-width: none;
  }

  .sy-footer__contact { max-width: none; }

  .sy-header__quick { gap: 12px; }
}

@media (max-width: 860px) {
  .sy-header__quick { display: none; }

  .sy-nav-toggle { display: inline-flex; }

  .sy-header__navrow {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding-top: 4px;
  }

  .sy-nav {
    display: none;
    width: 100%;
  }

  .sy-nav[data-open="true"] { display: block; }

  .sy-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .sy-nav__item { margin: 0; }

  .sy-nav__item + .sy-nav__item { margin: 0; }

  .sy-nav__item + .sy-nav__item::before { display: none; }

  .sy-nav__link {
    width: 100%;
    border-radius: 10px;
    border-bottom: 1px solid rgba(230, 233, 255, 0.08);
  }

  .sy-btn--compact { width: 100%; }

  .sy-header__top { padding: 14px 0 10px; }
}

@media (max-width: 640px) {
  .sy-footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .sy-footer__col,
  .sy-footer__contact {
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .sy-scroll-progress { display: none; }
}