:root {
  --deep-blue: #0A1E3F;
  --mid-blue: #123B6E;
  --card-bg: #0B2342;
  --neon-green: #39FF88;
  --neon-green-dim: #00E5A8;
  --orange: #FF6B2C;
  --light-text: #E8F0F8;
  --muted-text: #A0B8D0;
  --glass-bg: rgba(10, 30, 63, 0.72);
  --border-line: rgba(57, 255, 136, 0.25);
  --heading-font: "Source Han Serif SC", "Noto Serif SC", serif;
  --body-font: "Source Han Sans SC", "Noto Sans SC", sans-serif;
  --mono-font: "JetBrains Mono", "Roboto Mono", monospace;
  --content-width: 1240px;
  --header-height: 72px;
  --radius: 6px;
  --transition-fast: 0.25s ease;
  --transition-slow: 0.6s cubic-bezier(0.22, 1, 0.36, 1);
}

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

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

body {
  font-family: var(--body-font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--light-text);
  background-color: var(--deep-blue);
  min-height: 100vh;
  padding-top: var(--header-height);
}

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

ul,
ol {
  list-style: none;
}

a {
  color: var(--neon-green);
  text-decoration: none;
}

button {
  font-family: var(--body-font);
  font-size: 100%;
  border: none;
  background: none;
  color: inherit;
  cursor: pointer;
}

address {
  font-style: normal;
}

:focus-visible {
  outline: 2px solid var(--neon-green);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection {
  background: var(--neon-green);
  color: var(--deep-blue);
}

.skip-link {
  position: fixed;
  top: -100%;
  left: 16px;
  z-index: 999;
  background: var(--neon-green);
  color: var(--deep-blue);
  padding: 10px 18px;
  border-radius: 4px;
  font-weight: 700;
  font-size: 14px;
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 8px;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 210;
  background: linear-gradient(90deg, var(--neon-green), var(--neon-green-dim));
  border-radius: 0 2px 2px 0;
  box-shadow: 0 0 8px rgba(57, 255, 136, 0.5);
  transition: width 0.15s ease-out;
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 150;
  height: var(--header-height);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.site-header[data-scrolled="true"] {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: var(--border-line);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

.header-inner {
  max-width: var(--content-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--light-text);
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}

.brand:hover {
  opacity: 0.88;
}

.brand-mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 2px solid var(--neon-green);
  border-radius: 50%;
  flex-shrink: 0;
  background:
    linear-gradient(135deg, transparent 47%, var(--neon-green) 48%, var(--neon-green) 52%, transparent 53%),
    linear-gradient(90deg, transparent 48%, var(--neon-green) 49%, var(--neon-green) 51%, transparent 52%),
    linear-gradient(0deg, transparent 48%, var(--neon-green) 49%, var(--neon-green) 51%, transparent 52%);
}

.brand-mark::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 10px rgba(255, 107, 44, 0.7);
  z-index: 1;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
  min-width: 0;
}

.brand-name {
  font-family: var(--heading-font);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--light-text);
  white-space: nowrap;
}

.brand-tagline {
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--muted-text);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
}

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

.nav-link {
  display: inline-block;
  padding: 10px 14px;
  color: var(--light-text);
  font-size: 14px;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  border-radius: 2px 2px 0 0;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--neon-green);
}

.nav-link[aria-current="page"] {
  color: var(--neon-green);
  border-bottom-color: var(--neon-green);
}

.cta-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  background: linear-gradient(135deg, var(--neon-green), var(--neon-green-dim));
  color: var(--deep-blue);
  font-size: 14px;
  font-weight: 700;
  border-radius: 999px;
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
  box-shadow: 0 2px 12px rgba(57, 255, 136, 0.25);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

.cta-btn::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--deep-blue);
  flex-shrink: 0;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(57, 255, 136, 0.35);
  filter: brightness(1.05);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 10px 8px;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-line);
  border-radius: 6px;
  z-index: 190;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.nav-toggle:hover {
  background: rgba(57, 255, 136, 0.08);
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--neon-green);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) 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(-7px) rotate(-45deg);
}

.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section-title {
  font-family: var(--heading-font);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--light-text);
  letter-spacing: -0.01em;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted-text);
  max-width: 640px;
  margin-bottom: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

.btn--primary {
  background: var(--neon-green);
  color: var(--deep-blue);
  box-shadow: 0 2px 14px rgba(57, 255, 136, 0.25);
}

.btn--primary:hover {
  background: var(--neon-green-dim);
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(57, 255, 136, 0.3);
}

.btn--ghost {
  background: transparent;
  border-color: var(--neon-green);
  color: var(--neon-green);
}

.btn--ghost:hover {
  background: rgba(57, 255, 136, 0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 14px rgba(57, 255, 136, 0.12);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: var(--card-bg);
  border: 1px solid rgba(160, 184, 208, 0.15);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-line);
  box-shadow: 0 16px 32px rgba(0, 0, 0, 0.3);
}

.data-card {
  position: relative;
  background: linear-gradient(135deg, var(--mid-blue), var(--card-bg));
  border: 1px solid var(--border-line);
  border-radius: 4px;
  padding: 22px 24px;
  overflow: hidden;
}

.data-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--neon-green);
  border-radius: 0 2px 2px 0;
}

.data-card__value {
  font-family: var(--mono-font);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--neon-green);
  letter-spacing: -0.02em;
}

.data-card__label {
  margin-top: 8px;
  font-size: 13px;
  color: var(--muted-text);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  background: rgba(57, 255, 136, 0.1);
  border: 1px solid rgba(57, 255, 136, 0.35);
  border-radius: 2px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--neon-green);
  white-space: nowrap;
}

.tag--hot {
  background: rgba(255, 107, 44, 0.1);
  border-color: rgba(255, 107, 44, 0.4);
  color: var(--orange);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--neon-green);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.link-arrow::after {
  content: "→";
  font-family: var(--body-font);
}

.link-arrow:hover {
  gap: 12px;
  color: var(--neon-green-dim);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--muted-text);
}

.breadcrumb li {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb li:not(:last-child)::after {
  content: "/";
  color: var(--muted-text);
}

.breadcrumb a {
  color: var(--neon-green);
  text-decoration: none;
}

.breadcrumb a:hover {
  text-decoration: underline;
}

.breadcrumb [aria-current="page"] {
  color: var(--muted-text);
  pointer-events: none;
}

.image-placeholder {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 220px;
  background: linear-gradient(135deg, rgba(57, 255, 136, 0.04), transparent), var(--mid-blue);
  border: 1px solid rgba(160, 184, 208, 0.2);
  border-radius: var(--radius);
  overflow: hidden;
  text-align: center;
}

.image-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 48%, rgba(57, 255, 136, 0.08) 49%, rgba(57, 255, 136, 0.08) 51%, transparent 52%);
}

.image-placeholder[data-label]::after {
  content: attr(data-label);
  position: relative;
  z-index: 1;
  padding: 8px 14px;
  background: var(--glass-bg);
  border: 1px solid var(--border-line);
  border-radius: 4px;
  color: var(--muted-text);
  font-family: var(--mono-font);
  font-size: 13px;
  letter-spacing: 0.06em;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

[data-reveal][data-revealed="true"] {
  opacity: 1;
  transform: translateY(0);
}

.site-footer {
  position: relative;
  margin-top: 80px;
  background: var(--deep-blue);
  border-top: 1px solid rgba(160, 184, 208, 0.12);
  overflow: hidden;
}

.footer-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-green) 0%, transparent 70%);
}

.footer-main {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 56px 24px 48px;
  display: grid;
  grid-template-columns: 1.35fr 0.8fr 0.9fr 1.2fr;
  gap: 48px;
}

.footer-brand-col {
  position: relative;
}

.footer-brand-col::after {
  content: "";
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-green), transparent);
  transform: skewX(-20deg);
}

.footer-about {
  margin-top: 20px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted-text);
  max-width: 44em;
}

.trust-statement {
  margin-top: 16px;
  padding: 12px 14px;
  background: rgba(57, 255, 136, 0.05);
  border-left: 2px solid var(--neon-green);
  border-radius: 0 4px 4px 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted-text);
}

.footer-heading {
  font-family: var(--heading-font);
  font-size: 16px;
  font-weight: 700;
  color: var(--light-text);
  margin-bottom: 16px;
  position: relative;
  padding-left: 14px;
}

.footer-heading::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 4px;
  height: 14px;
  background: var(--orange);
  transform: skewX(-14deg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  position: relative;
  display: inline-block;
  color: var(--muted-text);
  font-size: 14px;
  line-height: 1.5;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.footer-links a:hover {
  color: var(--neon-green);
  transform: translateX(4px);
}

.footer-contact-col .footer-address {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-contact-line {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  align-items: baseline;
  font-size: 14px;
  color: var(--muted-text);
  line-height: 1.5;
}

.footer-contact-line strong {
  color: var(--light-text);
  font-weight: 600;
  flex-shrink: 0;
  min-width: 48px;
}

.footer-contact-note {
  margin-top: 12px;
  padding: 10px 14px;
  background: rgba(57, 255, 136, 0.05);
  border-left: 2px solid var(--neon-green);
  border-radius: 0 4px 4px 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted-text);
}

.footer-bottom {
  border-top: 1px solid rgba(160, 184, 208, 0.12);
  background: var(--card-bg);
}

.footer-bottom-inner {
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-copyright {
  font-size: 13px;
  color: var(--muted-text);
}

.footer-icp {
  font-size: 13px;
  color: var(--muted-text);
  font-family: var(--mono-font);
}

.back-top {
  position: fixed;
  right: 24px;
  bottom: 40px;
  z-index: 180;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--card-bg);
  border: 1px solid var(--neon-green);
  color: var(--neon-green);
  font-size: 18px;
  line-height: 1;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition-fast), transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast), visibility var(--transition-fast);
}

.back-top[data-visible="true"] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-top:hover {
  background: var(--mid-blue);
  color: var(--light-text);
}

@media (max-width: 1024px) {
  .footer-main {
    grid-template-columns: 1fr 1fr;
    gap: 40px 32px;
  }
}

@media (max-width: 860px) {
  .header-inner {
    padding: 0 16px;
  }

  .cta-btn {
    padding: 0;
    width: 38px;
    height: 38px;
    border-radius: 50%;
  }

  .cta-btn span {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .site-nav {
    position: fixed;
    top: calc(var(--header-height) + 8px);
    left: 12px;
    right: 12px;
    z-index: 185;
    background: var(--glass-bg);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-line);
    border-radius: var(--radius);
    padding: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px) scale(0.98);
    pointer-events: none;
    transition: opacity var(--transition-fast), transform var(--transition-fast), visibility var(--transition-fast);
  }

  .site-nav[data-open="true"] {
    visibility: visible;
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    gap: 2px;
    width: 100%;
  }

  .nav-link {
    display: block;
    width: 100%;
    padding: 13px 15px;
    border-bottom: none;
    border-left: 2px solid transparent;
    border-radius: 4px;
  }

  .nav-link:hover {
    background: rgba(57, 255, 136, 0.08);
    border-left-color: var(--neon-green);
  }

  .nav-link[aria-current="page"] {
    background: rgba(57, 255, 136, 0.08);
    border-left-color: var(--neon-green);
    border-bottom-color: transparent;
  }

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

  .brand-tagline {
    letter-spacing: 0.08em;
  }
}

@media (max-width: 600px) {
  .footer-main {
    grid-template-columns: 1fr;
    padding: 40px 20px 32px;
    gap: 36px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 20px;
  }

  .back-top {
    right: 16px;
    bottom: 24px;
  }
}

@media (max-width: 420px) {
  .brand-tagline {
    display: none;
  }

  .brand-name {
    font-size: 18px;
  }
}

@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;
  }

  .scroll-progress {
    transition: none;
  }

  .back-top {
    transition: none;
  }
}