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

:root {
  --color-bg-main: #0B3D2E;
  --color-bg-dark: #0A0F0D;
  --color-neon: #39FF14;
  --color-gold: #FFD700;
  --color-white: #FFFFFF;
  --color-muted: #B0C4B8;
  --color-panel: rgba(255, 255, 255, 0.06);
  --color-border-gold: rgba(255, 215, 0, 0.4);
  --font-headline: 'Orbitron', 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --header-height: 76px;
  --container-width: 1240px;
  --duration-fast: 0.25s;
  --duration-mid: 0.45s;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-white);
  background-color: var(--color-bg-main);
  background-image:
    radial-gradient(ellipse 80% 60% at 20% -10%, rgba(57, 255, 20, 0.06), transparent),
    radial-gradient(ellipse 60% 50% at 90% 0%, rgba(255, 215, 0, 0.05), transparent);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

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

input,
select,
textarea,
button {
  font: inherit;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-headline);
  line-height: 1.2;
  color: var(--color-white);
  font-weight: 800;
}

a {
  color: var(--color-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.3s ease;
}

a:hover {
  color: var(--color-neon);
}

:focus-visible {
  outline: 3px solid var(--color-neon);
  outline-offset: 3px;
}

::selection {
  background: var(--color-neon);
  color: var(--color-bg-dark);
}

::-webkit-scrollbar {
  width: 10px;
  background: var(--color-bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--color-bg-main);
  border-radius: 5px;
  border: 2px solid var(--color-bg-dark);
}

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

.no-scroll {
  overflow: hidden;
  height: 100vh;
}

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

.main-content {
  position: relative;
  z-index: 1;
  display: block;
}

.section-title {
  font-family: var(--font-headline);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 900;
  line-height: 1.15;
  color: var(--color-white);
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--color-muted);
  font-size: 17px;
  max-width: 640px;
  margin-bottom: 32px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 2000;
  padding: 10px 18px;
  background: var(--color-gold);
  color: var(--color-bg-dark);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  clip-path: polygon(6px 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
  transform: translateY(-160%);
  transition: transform 0.35s var(--ease-out);
}

.skip-link:focus {
  transform: translateY(0);
  color: var(--color-bg-dark);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
  will-change: background;
}

.site-header[data-scrolled="true"] {
  background: rgba(10, 15, 13, 0.85);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(255, 215, 0, 0.16);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
}

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

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

.brand-logo:hover {
  color: var(--color-white);
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-neon);
  color: var(--color-bg-dark);
  font-family: var(--font-headline);
  font-size: 24px;
  font-weight: 900;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 8px 100%);
  transform: skewX(-12deg);
  flex-shrink: 0;
}

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

.brand-name {
  font-family: var(--font-headline);
  font-size: 21px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--color-white);
}

.brand-slogan {
  font-size: 11px;
  color: var(--color-neon);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 600;
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-links a {
  display: inline-block;
  padding: 10px 16px;
  color: var(--color-muted);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  position: relative;
  transition: color 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 4px;
  height: 2px;
  background: var(--color-neon);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}

.nav-links a:hover {
  color: var(--color-white);
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-links a[aria-current="page"] {
  color: var(--color-white);
}

.nav-links a[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--color-gold);
}

.btn-header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 22px;
  background: var(--color-neon);
  color: var(--color-bg-dark);
  font-family: var(--font-headline);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), filter 0.3s ease;
}

.btn-header-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 30px rgba(57, 255, 20, 0.35);
  filter: brightness(1.05);
  color: var(--color-bg-dark);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border-gold);
  background: rgba(11, 61, 46, 0.8);
  position: relative;
  z-index: 110;
  align-items: center;
  justify-content: center;
}

.toggle-icon {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}

.toggle-line {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  transition: transform 0.4s var(--ease-out), opacity 0.3s ease, background 0.3s ease;
}

.nav-toggle:hover .toggle-line {
  background: var(--color-neon);
}

.nav-toggle.is-active {
  border-color: var(--color-neon);
}

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

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

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

.header-progress {
  position: absolute;
  bottom: -1px;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-gold), var(--color-neon));
  z-index: 10;
  border-radius: 0 2px 2px 0;
  opacity: 0.9;
  transition: width 0.06s linear;
}

.site-footer {
  background: var(--color-bg-dark);
  border-top: 4px solid var(--color-neon);
  color: var(--color-muted);
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-neon), transparent);
}

.footer-top {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 60px 24px 40px;
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 40px;
}

.footer-logo {
  font-family: var(--font-headline);
  font-size: 26px;
  font-weight: 900;
  color: var(--color-white);
  letter-spacing: 0.04em;
  position: relative;
  padding-bottom: 12px;
  display: inline-block;
}

.footer-logo::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 36px;
  height: 3px;
  background: var(--color-neon);
  clip-path: polygon(0 0, 100% 0, 80% 100%, 0 100%);
}

.footer-about {
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.8;
}

.footer-trust {
  margin-top: 16px;
  font-size: 13px;
  color: var(--color-muted);
  opacity: 0.85;
  border-left: 3px solid var(--color-gold);
  padding-left: 14px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul a {
  color: var(--color-muted);
  text-decoration: none;
  font-size: 15px;
  transition: color 0.3s ease, padding-left 0.3s ease;
}

.footer-col ul a:hover {
  color: var(--color-neon);
  padding-left: 6px;
}

.footer-heading {
  font-family: var(--font-headline);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}

.footer-heading::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--color-neon);
}

.footer-contact p {
  font-size: 14px;
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-contact strong {
  color: var(--color-white);
  font-weight: 600;
}

.footer-note {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed rgba(176, 196, 184, 0.25);
  font-size: 13px;
}

.footer-bottom {
  border-top: 1px solid rgba(176, 196, 184, 0.14);
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  max-width: var(--container-width);
  margin: 0 auto;
  font-size: 13px;
}

.footer-icp {
  color: var(--color-neon);
  font-family: var(--font-headline);
  letter-spacing: 0.06em;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 0;
  font-size: 14px;
  color: var(--color-muted);
}

.breadcrumb a {
  color: var(--color-gold);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.breadcrumb .breadcrumb-current {
  color: var(--color-white);
}

.btn-primary,
.btn-gold,
.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 28px;
  font-family: var(--font-headline);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out), background 0.3s ease;
}

.btn-primary {
  background: var(--color-neon);
  color: var(--color-bg-dark);
  clip-path: polygon(10px 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(57, 255, 20, 0.3);
  color: var(--color-bg-dark);
}

.btn-gold {
  background: var(--color-gold);
  color: var(--color-bg-dark);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(255, 215, 0, 0.3);
  color: var(--color-bg-dark);
}

.btn-outline {
  background: transparent;
  color: var(--color-gold);
  border: 1px solid var(--color-gold);
  clip-path: polygon(8px 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}

.btn-outline:hover {
  background: rgba(255, 215, 0, 0.1);
  transform: translateY(-2px);
}

.badge--neon,
.badge--gold {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  font-family: var(--font-headline);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-left: 3px solid;
}

.badge--neon {
  background: rgba(57, 255, 20, 0.1);
  color: var(--color-neon);
  border-left-color: var(--color-neon);
}

.badge--gold {
  background: rgba(255, 215, 0, 0.1);
  color: var(--color-gold);
  border-left-color: var(--color-gold);
}

.panel-cut,
.panel-cut--neon,
.panel-cut--gold {
  background: var(--color-panel);
  border: 1px solid var(--color-border-gold);
  padding: 32px;
  position: relative;
  clip-path: polygon(calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px), 0 0);
}

.panel-cut--neon {
  border-color: rgba(57, 255, 20, 0.35);
}

.panel-cut--gold {
  border-color: var(--color-border-gold);
}

.data-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
}

.data-card {
  background: var(--color-panel);
  border: 1px solid var(--color-border-gold);
  padding: 24px;
  position: relative;
  overflow: hidden;
  clip-path: polygon(calc(100% - 16px) 0, 100% 16px, 100% 100%, 0 100%, 0 0);
}

.data-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--color-neon);
}

.data-card__label {
  font-family: var(--font-headline);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 12px;
}

.data-card__value {
  font-family: var(--font-headline);
  font-size: 42px;
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.1;
}

.data-card__unit {
  font-size: 16px;
  color: var(--color-neon);
  margin-left: 4px;
  font-weight: 700;
}

.accordion {
  border: 1px solid var(--color-border-gold);
  background: var(--color-panel);
}

.accordion-item {
  border-bottom: 1px solid rgba(255, 215, 0, 0.12);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  background: none;
  border: none;
  color: var(--color-white);
  font-size: 16px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  transition: background 0.3s ease;
}

.accordion-trigger:hover {
  background: rgba(255, 255, 255, 0.04);
}

.accordion-icon {
  width: 22px;
  height: 22px;
  position: relative;
  flex-shrink: 0;
}

.accordion-icon::before,
.accordion-icon::after {
  content: '';
  position: absolute;
  background: var(--color-neon);
  transition: transform 0.35s var(--ease-out);
}

.accordion-icon::before {
  top: 50%;
  left: 3px;
  right: 3px;
  height: 2px;
  transform: translateY(-50%);
}

.accordion-icon::after {
  top: 3px;
  bottom: 3px;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
}

.accordion-item[data-expanded="true"] .accordion-icon::after {
  transform: translateX(-50%) scaleY(0);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  padding: 0 20px;
  transition: max-height 0.45s var(--ease-out), padding 0.45s var(--ease-out);
}

.js .accordion-item[data-expanded="true"] .accordion-panel {
  max-height: 800px;
  padding-bottom: 20px;
}

.accordion-content {
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.8;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s var(--ease-out), transform 0.75s var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}

.js [data-reveal="left"] {
  transform: translateX(-32px);
}

.js [data-reveal="right"] {
  transform: translateX(32px);
}

.js [data-reveal].revealed {
  opacity: 1;
  transform: none;
}

.speed-lines {
  position: relative;
  overflow: hidden;
}

.speed-lines::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 12px,
    rgba(255, 255, 255, 0.03) 12px,
    rgba(255, 255, 255, 0.03) 24px
  );
  pointer-events: none;
}

.image-placeholder,
.image-placeholder--wide,
.image-placeholder--square {
  position: relative;
  width: 100%;
  background: linear-gradient(135deg, var(--color-bg-dark) 25%, rgba(255, 215, 0, 0.08) 50%, var(--color-bg-dark) 75%);
  background-size: 200% 200%;
  border: 1px solid var(--color-border-gold);
  overflow: hidden;
}

.image-placeholder {
  aspect-ratio: 16 / 9;
}

.image-placeholder--wide {
  aspect-ratio: 21 / 9;
}

.image-placeholder--square {
  aspect-ratio: 1 / 1;
}

.image-placeholder::before,
.image-placeholder--wide::before,
.image-placeholder--square::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 10px,
    rgba(57, 255, 20, 0.06) 10px,
    rgba(57, 255, 20, 0.06) 20px
  );
  pointer-events: none;
}

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

@media (max-width: 860px) {
  :root {
    --header-height: 64px;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(340px, 88vw);
    height: 100vh;
    height: 100dvh;
    background: rgba(11, 61, 46, 0.97);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    gap: 24px;
    padding: calc(var(--header-height) + 32px) 24px 24px;
    transform: translateX(100%);
    transition: transform 0.45s var(--ease-out);
    z-index: 105;
    overflow-y: auto;
    border-left: 2px solid var(--color-border-gold);
    box-shadow: -20px 0 60px rgba(0, 0, 0, 0.4);
  }

  .site-nav[data-open="true"] {
    transform: translateX(0);
  }

  body.no-scroll::after {
    content: '';
    position: fixed;
    inset: 0;
    background: rgba(10, 15, 13, 0.55);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
    z-index: 104;
  }

  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }

  .nav-links a {
    display: block;
    padding: 14px 12px;
    font-size: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }

  .nav-links a::after {
    left: 12px;
    right: 12px;
    bottom: 6px;
  }

  .btn-header-cta {
    margin-top: auto;
    justify-content: center;
    padding: 14px 16px;
    font-size: 14px;
  }
}

@media (max-width: 600px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-top: 48px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    padding: 18px 16px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 12px;
  }

  .brand-mark {
    width: 36px;
    height: 36px;
    font-size: 20px;
  }

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

  .container {
    padding: 0 16px;
  }
}

@media (max-width: 400px) {
  .brand-slogan {
    display: none;
  }
}

@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;
  }

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

  .site-nav {
    transition: none;
  }

  .header-progress {
    transition: none;
  }
}