*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg-deep: #0f0c29;
  --bg-mid: #302b63;
  --bg-dim: #24243e;
  --bg-card: #1a1a2e;
  --bg-overlay: rgba(15, 12, 41, 0.74);
  --accent-orange: #ff6b1a;
  --accent-cyan: #00f0ff;
  --accent-violet: #7b2ff7;
  --ok-green: #0d7a5f;
  --warn-amber: #ffc107;
  --text-silver: #e0e0e0;
  --text-muted: rgba(224, 224, 224, 0.66);
  --text-faint: rgba(224, 224, 224, 0.46);
  --grad-bg: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
  --grad-cta: linear-gradient(135deg, var(--accent-orange), #ff8c42);
  --font-head: Impact, "Noto Sans SC", sans-serif;
  --font-body: Inter, "Noto Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;
  --radius-pill: 999px;
  --radius-card: 16px;
  --radius-panel: 20px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-float: 0 12px 40px rgba(0, 0, 0, 0.42);
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --header-z: 100;
  --progress-z: 300;
  --container-width: 1200px;
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-silver);
  background: var(--grad-bg) fixed;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

ul, ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent-cyan);
  outline-offset: 4px;
  border-radius: 4px;
}

#main-content {
  padding-top: 92px;
  scroll-margin-top: 24px;
  min-height: 75vh;
}

.container {
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding: 72px 0;
}

.section-head {
  max-width: 760px;
  margin-bottom: 40px;
}

.section-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent-orange);
  margin-bottom: 8px;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(28px, 5vw, 44px);
  line-height: 1.12;
  color: var(--text-silver);
  margin-bottom: 12px;
}

.section-title .accent {
  color: var(--accent-cyan);
}

.section-desc {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  padding: 12px 0;
  margin-bottom: 16px;
}

.breadcrumb a {
  color: var(--text-silver);
}

.breadcrumb a:hover {
  color: var(--accent-cyan);
}

.breadcrumb .sep {
  color: rgba(224, 224, 224, 0.3);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  transition: transform var(--transition-base), background var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.btn-primary {
  background: var(--grad-cta);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255, 107, 26, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(255, 107, 26, 0.46);
}

.btn-ghost {
  border: 1px solid rgba(0, 240, 255, 0.4);
  color: var(--accent-cyan);
  background: transparent;
}

.btn-ghost:hover {
  background: rgba(0, 240, 255, 0.08);
  border-color: var(--accent-cyan);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.26);
  color: var(--accent-cyan);
}

.tag-orange {
  background: rgba(255, 107, 26, 0.1);
  border-color: rgba(255, 107, 26, 0.38);
  color: var(--accent-orange);
}

.tag-green {
  background: rgba(13, 122, 95, 0.12);
  border-color: rgba(13, 122, 95, 0.4);
  color: #35d0a8;
}

.grid {
  display: grid;
  gap: 24px;
}

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

.grid-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
  grid-template-columns: repeat(4, 1fr);
}

.panel-card {
  background: var(--bg-card);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-card);
  padding: 28px;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.panel-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 240, 255, 0.18);
  box-shadow: var(--shadow-float);
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 2000;
  padding: 10px 18px;
  background: var(--bg-deep);
  border: 1px solid var(--accent-cyan);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  border-radius: var(--radius-pill);
  transform: translateY(-240%);
  transition: transform var(--transition-base);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  top: 0;
  right: 24px;
  left: auto;
  z-index: var(--header-z);
  padding-top: 18px;
  pointer-events: none;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan));
  box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
  z-index: var(--progress-z);
  pointer-events: none;
}

.nav-dock {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px 8px 8px;
  border-radius: var(--radius-pill);
  background: var(--bg-overlay);
  border: 1px solid rgba(0, 240, 255, 0.22);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  pointer-events: auto;
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px 4px 4px;
  margin-right: 4px;
  border-right: 1px solid rgba(0, 240, 255, 0.14);
}

.nav-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--grad-cta);
  color: #fff;
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: 0.02em;
  box-shadow: 0 2px 16px rgba(255, 107, 26, 0.4);
}

.nav-brand-name {
  font-family: var(--font-head);
  font-size: 18px;
  color: var(--text-silver);
  letter-spacing: 0.06em;
}

.site-nav {
  display: block;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  border-radius: var(--radius-pill);
  transition: color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.08);
}

.nav-link[aria-current="page"] {
  color: #fff;
  background: rgba(0, 240, 255, 0.12);
  box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.35);
}

.nav-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid rgba(0, 240, 255, 0.3);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle-bar {
  display: block;
  width: 14px;
  height: 1.5px;
  background: var(--accent-cyan);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.site-footer {
  position: relative;
  background: linear-gradient(180deg, rgba(15, 12, 41, 0.65), rgba(10, 8, 25, 0.92));
  border-top: 1px solid rgba(0, 240, 255, 0.14);
  margin-top: 80px;
  padding: 56px 0 36px;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), rgba(255, 107, 26, 0.6), transparent);
  pointer-events: none;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.6fr 0.8fr 1.2fr;
  gap: 48px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.footer-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--grad-cta);
  color: #fff;
  font-family: var(--font-head);
  font-size: 18px;
  box-shadow: 0 4px 20px rgba(255, 107, 26, 0.35);
}

.footer-brand-name {
  font-family: var(--font-head);
  font-size: 24px;
  letter-spacing: 0.04em;
  color: var(--text-silver);
}

.footer-about {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.75;
  max-width: 42ch;
  margin-bottom: 16px;
}

.footer-trust {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.trust-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok-green);
  box-shadow: 0 0 8px rgba(13, 122, 95, 0.8);
  flex-shrink: 0;
}

.footer-col,
.footer-col-links,
.footer-col-contact {
  min-width: 0;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(0, 240, 255, 0.12);
}

.footer-list {
  display: grid;
  gap: 8px;
}

.footer-link {
  color: var(--text-muted);
  font-size: 14px;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent-cyan);
  padding-left: 4px;
}

.footer-contact-item {
  color: var(--text-muted);
  font-size: 14px;
  position: relative;
  padding-left: 14px;
}

.footer-contact-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-orange);
  opacity: 0.8;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px 24px;
  padding-top: 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-faint);
}

.footer-meta-item {
  white-space: nowrap;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.5s cubic-bezier(0.25, 0.1, 0.25, 1), transform 0.5s cubic-bezier(0.25, 0.1, 0.25, 1);
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .section {
    padding: 56px 0;
  }
}

@media (max-width: 768px) {
  .site-header {
    right: 12px;
    left: 12px;
    padding-top: 12px;
  }

  .nav-dock {
    justify-content: space-between;
    padding: 6px 6px 6px 6px;
    border-radius: 28px;
  }

  .nav-brand {
    padding: 4px 10px 4px 4px;
  }

  .nav-brand-mark {
    width: 30px;
    height: 30px;
    font-size: 14px;
  }

  .nav-brand-name {
    font-size: 16px;
  }

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

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
  }

  .site-nav {
    display: none;
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid rgba(0, 240, 255, 0.26);
    border-radius: var(--radius-panel);
    padding: 12px;
    box-shadow: var(--shadow-float);
  }

  .site-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    padding: 14px 20px;
    font-size: 13px;
    border-radius: 12px;
  }

  #main-content {
    padding-top: 80px;
  }

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

@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;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}