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

:root {
  --deep-sea: #0B1F3A;
  --neon: #39FF14;
  --orange: #FF6F00;
  --purple: #7B2FFF;
  --mist: #F5F7FA;
  --white: #FFFFFF;
  --slate: #4A5568;
  --steel: #2C5282;
  --ink: #0D2B45;
  --charcoal: #1A202C;
  --font-display: 'Montserrat', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'Roboto Mono', 'Fira Code', 'Consolas', monospace;
  --radius-card: 20px 4px 20px 4px;
  --radius-pill: 999px;
  --container: 1320px;
  --gutter: 24px;
  --header-total: 92px;
  --header-total-mobile: 74px;
}

html {
  background: var(--mist);
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--slate);
  background: var(--mist);
  padding-top: var(--header-total);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}

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

a {
  color: var(--steel);
  transition: color 0.2s ease;
}

ul {
  list-style: none;
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.2;
  color: var(--deep-sea);
}

h1 {
  font-size: clamp(2rem, 5vw, 4rem);
}

a:focus,
button:focus {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 16px;
  z-index: 999;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  background: var(--neon);
  color: var(--deep-sea);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.875rem;
  text-decoration: none;
  transform: translateY(-300%);
  transition: transform 0.25s ease;
  box-shadow: 0 4px 16px rgba(57, 255, 20, 0.3);
}

.skip-link:focus,
.skip-link:focus-visible {
  transform: translateY(0);
  outline: 3px solid var(--deep-sea);
  outline-offset: 2px;
}

.content-container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.section-block {
  padding: 80px 0;
}

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

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

.grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 14px 20px;
  pointer-events: none;
}

.site-header__bar {
  max-width: var(--container);
  margin: 0 auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 8px 8px 8px 18px;
  border: 1px solid rgba(57, 255, 20, 0.22);
  border-radius: var(--radius-pill);
  background: var(--deep-sea);
  box-shadow: 0 12px 40px rgba(11, 31, 58, 0.45);
  pointer-events: auto;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand__glyph {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: var(--deep-sea);
  border: 1px solid rgba(57, 255, 20, 0.5);
  color: var(--neon);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-indent: 0.08em;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.brand__glyph::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--orange));
}

.brand__content {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.05rem;
  color: var(--white);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.brand__tagline {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--neon);
  margin-top: 2px;
  white-space: nowrap;
}

.nav-capsule {
  display: flex;
  align-items: center;
}

.nav-capsule__list {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 4px;
  border-radius: var(--radius-pill);
  background: rgba(245, 247, 250, 0.04);
}

.nav-capsule__item {
  margin: 0;
}

.nav-capsule__link {
  display: block;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.86rem;
  font-weight: 600;
  color: rgba(245, 247, 250, 0.75);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.nav-capsule__link:hover {
  color: var(--neon);
  background: rgba(57, 255, 20, 0.08);
  border-color: rgba(57, 255, 20, 0.2);
}

.nav-capsule__link[aria-current="page"] {
  color: var(--deep-sea);
  background: var(--neon);
  border-color: var(--neon);
  font-weight: 800;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid rgba(57, 255, 20, 0.35);
  border-radius: 14px;
  background: transparent;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle__bar {
  display: block;
  width: 20px;
  height: 2px;
  border-radius: 2px;
  background: var(--neon);
  transition: transform 0.25s ease, opacity 0.25s ease;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  position: relative;
  background: linear-gradient(180deg, var(--deep-sea) 0%, var(--charcoal) 100%);
  color: rgba(245, 247, 250, 0.85);
  padding: 72px 24px 24px;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(57, 255, 20, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

.footer-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--neon) 0%, var(--purple) 50%, var(--orange) 100%);
}

.site-footer__grid {
  position: relative;
  max-width: var(--container);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.3fr 0.8fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(245, 247, 250, 0.1);
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-brand__name {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.65rem;
  color: var(--white);
  text-decoration: none;
  letter-spacing: 0.03em;
  margin-bottom: 14px;
}

.footer-brand__name:hover {
  color: var(--neon);
}

.footer-brand__statement {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(245, 247, 250, 0.6);
  max-width: 34em;
}

.footer-column {
  display: flex;
  flex-direction: column;
}

.footer-column__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 18px;
}

.footer-column__list,
.footer-contact__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-column__link {
  display: inline-block;
  font-size: 0.9rem;
  color: rgba(245, 247, 250, 0.68);
  text-decoration: none;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-bottom-color 0.2s ease;
}

.footer-column__link:hover {
  color: var(--neon);
  border-bottom-color: rgba(57, 255, 20, 0.4);
}

.footer-contact {
  display: flex;
  flex-direction: column;
}

.footer-contact__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: 0.9rem;
  line-height: 1.45;
}

.footer-contact__label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--neon);
}

.footer-contact__value {
  color: rgba(245, 247, 250, 0.75);
  font-size: 0.9rem;
}

.site-footer__bottom {
  position: relative;
  max-width: var(--container);
  margin: 28px auto 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.8rem;
  color: rgba(245, 247, 250, 0.4);
}

.site-footer__copyright,
.site-footer__icp {
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  border: 2px solid transparent;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn--primary {
  background: var(--neon);
  color: var(--deep-sea);
  box-shadow: 0 4px 20px rgba(57, 255, 20, 0.3);
}

.btn--primary:hover {
  background: var(--deep-sea);
  color: var(--neon);
  border-color: var(--neon);
  box-shadow: 0 4px 24px rgba(57, 255, 20, 0.35);
}

.btn--secondary {
  background: transparent;
  color: var(--steel);
  border-color: var(--steel);
}

.btn--secondary:hover {
  background: var(--steel);
  color: var(--white);
}

.card {
  background: var(--white);
  border-radius: var(--radius-card);
  border: 1px solid rgba(44, 82, 130, 0.12);
  padding: 28px;
  box-shadow: 0 2px 14px rgba(11, 31, 58, 0.05);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  border-color: rgba(57, 255, 20, 0.45);
  box-shadow: 0 8px 28px rgba(11, 31, 58, 0.08);
}

.card--data {
  background: linear-gradient(135deg, var(--deep-sea) 0%, var(--ink) 100%);
  border-color: rgba(57, 255, 20, 0.2);
  color: rgba(245, 247, 250, 0.85);
}

.card--data:hover {
  border-color: rgba(57, 255, 20, 0.5);
}

.stat-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 20px 22px;
  border-radius: var(--radius-card);
  background: var(--white);
  border: 1px solid rgba(44, 82, 130, 0.12);
  transition: border-color 0.2s ease;
}

.stat-card:hover {
  border-color: rgba(57, 255, 20, 0.4);
}

.stat-card__label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--slate);
}

.stat-card__value {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--deep-sea);
}

.stat-card__delta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--orange);
}

.stat-card--dark {
  background: var(--deep-sea);
  border-color: rgba(57, 255, 20, 0.22);
}

.stat-card--dark .stat-card__label {
  color: rgba(245, 247, 250, 0.55);
}

.stat-card--dark .stat-card__value {
  color: var(--neon);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
}

.eyebrow::before {
  content: '';
  width: 12px;
  height: 2px;
  background: var(--neon);
  border-radius: 2px;
}

.section-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--deep-sea);
  margin-top: 10px;
}

.page-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5vw, 4rem);
  line-height: 1.1;
  color: var(--deep-sea);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(123, 47, 255, 0.45);
  background: rgba(123, 47, 255, 0.06);
  color: var(--purple);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.data-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 4px;
  border-radius: var(--radius-pill);
  background: var(--white);
  border: 1px solid rgba(44, 82, 130, 0.15);
  box-shadow: 0 2px 10px rgba(11, 31, 58, 0.04);
}

.data-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 20px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--slate);
  transition: background-color 0.2s ease, color 0.2s ease;
}

.data-tab:hover {
  color: var(--deep-sea);
  background: rgba(57, 255, 20, 0.08);
}

.data-tab.is-active {
  background: var(--deep-sea);
  color: var(--neon);
}

.data-panel {
  display: none;
}

.data-panel.is-active {
  display: block;
  animation: panelIn 0.3s ease;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  font-size: 0.85rem;
}

.breadcrumb__item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: '/';
  color: rgba(245, 247, 250, 0.4);
  margin: 0 2px;
}

.breadcrumb__link {
  color: rgba(245, 247, 250, 0.7);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

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

.hero-visual {
  position: relative;
  min-height: clamp(320px, 42vw, 520px);
  border-radius: var(--radius-card);
  background:
    radial-gradient(ellipse at 20% 20%, rgba(123, 47, 255, 0.35), transparent 55%),
    radial-gradient(ellipse at 80% 70%, rgba(57, 255, 20, 0.14), transparent 45%),
    linear-gradient(135deg, var(--deep-sea) 0%, var(--ink) 70%, var(--charcoal) 100%);
  border: 1px solid rgba(57, 255, 20, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.visual-frame {
  position: relative;
  width: 100%;
  border-radius: var(--radius-card);
  overflow: hidden;
  background: linear-gradient(145deg, var(--deep-sea), var(--charcoal));
  border: 1px solid rgba(245, 247, 250, 0.08);
}

.visual-frame::before {
  content: '';
  display: block;
  padding-top: 62.5%;
}

.visual-frame > img,
.visual-frame > .visual-frame__content {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.visual-frame--wide::before {
  padding-top: 45%;
}

.visual-frame--square::before {
  padding-top: 100%;
}

.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 120;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 16px;
  border: 1px solid rgba(57, 255, 20, 0.4);
  background: var(--deep-sea);
  color: var(--neon);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.25s ease, transform 0.25s ease, visibility 0.25s, background-color 0.2s ease, color 0.2s ease;
  box-shadow: 0 8px 28px rgba(11, 31, 58, 0.35);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--neon);
  color: var(--deep-sea);
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 960px) {
  body {
    padding-top: var(--header-total-mobile);
  }

  .site-header {
    padding: 10px 16px;
  }

  .site-header__bar {
    padding: 6px 6px 6px 12px;
    gap: 8px;
  }

  .brand__glyph {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    font-size: 0.72rem;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-capsule {
    position: absolute;
    top: calc(100% + 12px);
    left: 0;
    right: 0;
    display: block;
    background: var(--deep-sea);
    border: 1px solid rgba(57, 255, 20, 0.25);
    border-radius: 24px;
    padding: 14px;
    box-shadow: 0 16px 44px rgba(11, 31, 58, 0.55);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
    pointer-events: none;
  }

  .nav-capsule[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
  }

  .nav-capsule__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    background: transparent;
    padding: 0;
  }

  .nav-capsule__link {
    text-align: center;
    padding: 12px 16px;
    border-radius: 16px;
    font-size: 0.95rem;
    white-space: normal;
  }

  .section-block {
    padding: 56px 0;
  }

  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 36px;
  }

  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 600px) {
  .brand__tagline {
    font-size: 0.58rem;
  }

  .site-footer {
    padding: 56px 20px 20px;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

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

  .data-tabs {
    border-radius: 24px;
  }

  .data-tab {
    flex: 1 1 auto;
    justify-content: center;
  }

  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
  }
}

@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;
  }
}