:root {
  --night-deep: #0A1733;
  --night-shadow: #050B1E;
  --night-trench: #10224B;
  --steel-line: #1E3A6E;
  --volt-green: #C6FF3D;
  --sport-orange: #FF7A2F;
  --cold-white: #F4F7FB;
  --mist-silver: #B7C4D9;
  --fog-blue: #DCE6F5;
  --light-blue: #E8EEF7;
  --font-serif: "Noto Serif SC", "Georgia", "Times New Roman", serif;
  --font-data: "Roboto Mono", "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-max: 1280px;
  --header-height: 72px;
  --radius-clip: 8px;
  --ease-standard: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--cold-white);
  background-color: var(--night-deep);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--cold-white);
  text-decoration: none;
  transition: color 0.2s var(--ease-standard), background-color 0.2s var(--ease-standard), border-color 0.2s var(--ease-standard);
}

a:hover {
  color: var(--volt-green);
}

ul, ol {
  list-style: none;
}

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

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

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 32px;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 12px 24px;
  background-color: var(--volt-green);
  color: var(--night-shadow);
  font-weight: 700;
  font-size: 14px;
  border-radius: 0 0 8px 8px;
  transition: top 0.3s var(--ease-standard);
}

.skip-link:focus {
  top: 0;
  color: var(--night-shadow);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: transparent;
  transition: background-color 0.4s var(--ease-standard), box-shadow 0.4s var(--ease-standard), backdrop-filter 0.4s var(--ease-standard);
}

.site-header.is-scrolled {
  background-color: rgba(10, 23, 51, 0.85);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  box-shadow: 0 4px 32px rgba(5, 11, 30, 0.5);
  border-bottom: 1px solid rgba(30, 58, 110, 0.5);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 32px;
}

.site-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand-mark {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--volt-green) 0%, var(--volt-green) 45%, transparent 45%, transparent 55%, var(--sport-orange) 55%, var(--sport-orange) 100%);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  border-radius: 4px;
}

.brand-text {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--cold-white);
}

.site-header.is-scrolled .brand-text {
  color: var(--cold-white);
}

.site-nav {}

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

.nav-list a {
  position: relative;
  display: block;
  padding: 8px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--fog-blue);
  letter-spacing: 1px;
  border-radius: 4px;
  transition: color 0.2s var(--ease-standard), background-color 0.2s var(--ease-standard);
}

.nav-list a:hover {
  color: var(--volt-green);
  background-color: rgba(198, 255, 61, 0.08);
}

.nav-list a[aria-current="page"] {
  color: var(--volt-green);
  background-color: rgba(198, 255, 61, 0.1);
}

.nav-list a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 2px;
  background-color: var(--volt-green);
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--steel-line);
  border-radius: 8px;
  background-color: rgba(10, 23, 51, 0.6);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  transition: border-color 0.2s var(--ease-standard), background-color 0.2s var(--ease-standard);
}

.nav-toggle:hover {
  border-color: var(--volt-green);
}

.nav-toggle[aria-expanded="true"] {
  border-color: var(--volt-green);
  background-color: rgba(5, 11, 30, 0.8);
}

.nav-toggle-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--cold-white);
}

.nav-toggle-box {
  display: inline-flex;
  flex-direction: column;
  gap: 5px;
  width: 20px;
}

.nav-toggle-box span {
  display: block;
  height: 2px;
  background-color: var(--volt-green);
  border-radius: 2px;
  transition: transform 0.3s var(--ease-standard), opacity 0.2s var(--ease-standard);
}

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

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

.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  background-color: var(--night-shadow);
  border-top: 1px solid var(--steel-line);
  padding: 80px 0 32px;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  right: -10%;
  width: 50%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--volt-green), var(--sport-orange), transparent);
  opacity: 0.4;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand .site-brand {
  margin-bottom: 24px;
}

.footer-logo .brand-text {
  color: var(--cold-white);
}

.trust-note {
  max-width: 360px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist-silver);
  border-left: 2px solid var(--volt-green);
  padding-left: 16px;
}

.footer-heading {
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  color: var(--volt-green);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  color: var(--mist-silver);
  font-size: 15px;
  transition: color 0.2s var(--ease-standard), padding-left 0.2s var(--ease-standard);
}

.footer-links a:hover {
  color: var(--volt-green);
  padding-left: 6px;
}

.footer-contact p {
  color: var(--mist-silver);
  font-size: 15px;
  margin-bottom: 12px;
  line-height: 1.6;
}

.footer-contact a {
  color: var(--cold-white);
  border-bottom: 1px solid var(--steel-line);
}

.footer-contact a:hover {
  color: var(--volt-green);
  border-color: var(--volt-green);
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(30, 58, 110, 0.6);
  font-size: 13px;
  color: var(--mist-silver);
  font-family: var(--font-data);
}

.clip-corner {
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.panel {
  background-color: var(--night-trench);
  border: 1px solid var(--steel-line);
  border-radius: 8px;
  padding: 32px;
}

.panel-dark {
  background-color: var(--night-shadow);
}

.panel-light {
  background-color: var(--light-blue);
  color: var(--night-deep);
}

.panel-light .panel-title {
  color: var(--night-deep);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-data);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--volt-green);
}

.eyebrow::before {
  content: "";
  display: block;
  width: 32px;
  height: 2px;
  background-color: var(--volt-green);
}

.display-title {
  font-family: var(--font-serif);
  font-size: clamp(64px, 10vw, 120px);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--cold-white);
  margin-bottom: 24px;
}

.lede-text {
  font-size: 18px;
  line-height: 1.8;
  color: var(--mist-silver);
  max-width: 56ch;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px 32px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 15px;
  letter-spacing: 1px;
  cursor: pointer;
  transition: transform 0.2s var(--ease-standard), box-shadow 0.2s var(--ease-standard), background-color 0.2s var(--ease-standard), color 0.2s var(--ease-standard);
}

.btn-primary {
  background-color: var(--volt-green);
  color: var(--night-shadow);
  box-shadow: 0 4px 24px rgba(198, 255, 61, 0.25);
}

.btn-primary:hover {
  background-color: #d4ff66;
  color: var(--night-shadow);
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(198, 255, 61, 0.35);
}

.btn-ghost {
  background-color: transparent;
  color: var(--cold-white);
  border: 1px solid var(--steel-line);
}

.btn-ghost:hover {
  border-color: var(--volt-green);
  color: var(--volt-green);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  background-color: rgba(198, 255, 61, 0.12);
  color: var(--volt-green);
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
  border-radius: 100px;
  border: 1px solid rgba(198, 255, 61, 0.3);
}

.tag-orange {
  background-color: rgba(255, 122, 47, 0.12);
  color: var(--sport-orange);
  border-color: rgba(255, 122, 47, 0.3);
}

.motion-line {
  position: relative;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--steel-line) 30%, var(--volt-green) 70%, transparent);
}

.motion-line::after {
  content: "";
  position: absolute;
  top: 50%;
  right: 0;
  width: 8px;
  height: 8px;
  background-color: var(--volt-green);
  border-radius: 50%;
  transform: translate(50%, -50%);
  box-shadow: 0 0 12px rgba(198, 255, 61, 0.6);
}

.data-list {
  font-family: var(--font-data);
  font-size: 14px;
}

.data-list li {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(30, 58, 110, 0.5);
}

.data-list span:first-child {
  color: var(--mist-silver);
}

.data-list span:last-child {
  color: var(--cold-white);
  font-weight: 500;
}

.image-container {
  position: relative;
  overflow: hidden;
  background-color: var(--night-trench);
  border-radius: 8px;
  border: 1px solid var(--steel-line);
  aspect-ratio: 16 / 9;
}

.image-container::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(198, 255, 61, 0.1) 0%, transparent 40%),
    repeating-linear-gradient(-45deg, transparent 0px, transparent 12px, rgba(30, 58, 110, 0.3) 12px, rgba(30, 58, 110, 0.3) 13px);
}

.image-container::after {
  content: "";
  position: absolute;
  left: 12%;
  right: 12%;
  bottom: 12%;
  height: 2px;
  background: linear-gradient(90deg, var(--volt-green), transparent);
  opacity: 0.5;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.48s var(--ease-standard), transform 0.48s var(--ease-standard);
}

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

.js [data-reveal].is-revealed::after {
  opacity: 1;
}

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

  .nav-list a {
    padding: 8px 12px;
    font-size: 14px;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }

  .header-inner {
    height: 64px;
  }

  .brand-text {
    font-size: 20px;
  }

  .brand-mark {
    width: 24px;
    height: 24px;
  }

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

  .site-nav {
    position: fixed;
    top: 64px;
    left: 0;
    width: 100%;
    height: calc(100vh - 64px);
    background-color: rgba(5, 11, 30, 0.98);
    -webkit-backdrop-filter: blur(16px);
    backdrop-filter: blur(16px);
    padding: 32px 20px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.3s var(--ease-standard), transform 0.3s var(--ease-standard), visibility 0.3s var(--ease-standard);
    overflow-y: auto;
    border-top: 1px solid var(--steel-line);
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .nav-list a {
    font-size: 20px;
    font-weight: 600;
    padding: 16px 12px;
    color: var(--cold-white);
    border-radius: 8px;
  }

  .nav-list a[aria-current="page"] {
    background-color: rgba(198, 255, 61, 0.1);
  }

  .nav-list a[aria-current="page"]::after {
    display: none;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .display-title {
    font-size: 44px;
  }

  .lede-text {
    font-size: 16px;
  }

  .btn {
    width: 100%;
  }
}

@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;
  }

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

  .btn-primary:hover {
    transform: none;
  }

  .footer-links a:hover {
    padding-left: 0;
  }
}