:root {
  --c-bg: #0A0A0A;
  --c-surface: #0B1D2A;
  --c-card: #1A1A1A;
  --c-soft: #F5F5F5;
  --c-white: #FFFFFF;
  --c-muted: #9E9E9E;
  --c-dark: #212121;
  --c-accent: #39FF14;
  --c-hot: #FF6A00;
  --font-display: 'Impact', 'Anton', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --content-w: 1400px;
  --header-h: 80px;
  --radius: 14px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-body);
  background: var(--c-bg);
  color: var(--c-white);
  line-height: 1.75;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  border: 0;
  background: none;
  color: inherit;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-white);
}

h1 {
  font-size: clamp(2.6rem, 6vw, 5rem);
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.75rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.6rem);
}

p {
  color: rgba(255, 255, 255, 0.82);
}

#main-content {
  display: block;
  min-height: 60vh;
}

.container,
.header-inner {
  width: 100%;
  max-width: var(--content-w);
  margin-inline: auto;
  padding-inline: 32px;
}

.divider {
  height: 1px;
  border: 0;
  margin: 40px 0;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 20, 0.5), transparent);
}

.skip-link {
  position: fixed;
  top: -80px;
  left: 16px;
  z-index: 3000;
  padding: 10px 20px;
  background: var(--c-accent);
  color: var(--c-bg);
  border-radius: 8px;
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.35);
  transition: top 0.3s var(--ease);
}

.skip-link:focus-visible {
  top: 16px;
  outline: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 10, 10, 0.86);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--c-accent);
  opacity: 0.75;
  z-index: 2;
}

.site-header::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--c-hot);
  transform: scaleX(var(--progress, 0));
  transform-origin: 0 50%;
  z-index: 3;
  box-shadow: 0 0 8px rgba(255, 106, 0, 0.6);
}

.header-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-h);
}

.brand-sigil {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--c-white);
  text-decoration: none;
}

.brand-bolt {
  display: inline-block;
  width: 20px;
  height: 28px;
  background: linear-gradient(135deg, var(--c-hot), #FF8C1A);
  clip-path: polygon(50% 0%, 18% 58%, 40% 58%, 30% 100%, 88% 46%, 58% 46%);
  filter: drop-shadow(0 0 6px rgba(255, 106, 0, 0.4));
}

.brand-word {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.brand-en {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--c-accent);
  text-shadow: 0 0 12px rgba(57, 255, 20, 0.4);
}

.brand-cn {
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-white);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 2px 8px;
  border-radius: 99px;
}

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

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

.nav-list a {
  position: relative;
  display: block;
  padding: 10px 16px;
  border-radius: 99px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.nav-list a::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--c-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.nav-list a:hover {
  color: var(--c-accent);
  background: rgba(57, 255, 20, 0.08);
}

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

.nav-list a[aria-current="page"] {
  color: var(--c-bg);
  background: var(--c-accent);
  box-shadow: 0 0 18px rgba(57, 255, 20, 0.25);
}

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

.nav-toggle {
  display: none;
  position: relative;
  z-index: 102;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 10px;
}

.toggle-bar {
  display: block;
  width: 24px;
  height: 2px;
  margin-inline: auto;
  background: var(--c-white);
  border-radius: 2px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease), background 0.3s var(--ease);
}

.nav-toggle:hover .toggle-bar {
  background: var(--c-accent);
}

.site-header[data-open] .nav-toggle .toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--c-accent);
}

.site-header[data-open] .nav-toggle .toggle-bar:nth-child(2) {
  opacity: 0;
}

.site-header[data-open] .nav-toggle .toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--c-accent);
}

.site-footer {
  position: relative;
  margin-top: 80px;
  overflow: hidden;
  background:
    linear-gradient(125deg, var(--c-surface) 0%, #0B1D2A 48%, var(--c-bg) 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: -1px;
  right: 10%;
  width: 260px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--c-hot), transparent);
  transform: rotate(-2deg);
  transform-origin: right;
}

.footer-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 1.5fr;
  gap: 48px;
  max-width: var(--content-w);
  margin-inline: auto;
  padding: 64px 32px 48px;
}

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

.footer-bolt {
  display: inline-block;
  width: 14px;
  height: 20px;
  background: var(--c-accent);
  clip-path: polygon(50% 0%, 18% 58%, 40% 58%, 30% 100%, 88% 46%, 58% 46%);
  filter: drop-shadow(0 0 4px rgba(57, 255, 20, 0.5));
}

.footer-brand-name {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-white);
}

.footer-tagline {
  margin-top: 12px;
  color: rgba(255, 255, 255, 0.6);
  font-size: 14px;
  line-height: 1.6;
}

.footer-trust {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding: 6px 12px;
  border-radius: 99px;
  background: rgba(57, 255, 20, 0.08);
  border: 1px solid rgba(57, 255, 20, 0.25);
  color: var(--c-accent);
  font-size: 12px;
  font-weight: 600;
}

.footer-trust::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 8px var(--c-accent);
}

.footer-heading {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 12px;
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-nav-list a {
  display: inline-block;
  position: relative;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
  line-height: 2.2;
  transition: color 0.3s var(--ease), padding-left 0.3s var(--ease);
}

.footer-nav-list a::after {
  content: '>';
  margin-left: 4px;
  opacity: 0;
  color: var(--c-hot);
  transition: opacity 0.2s var(--ease);
}

.footer-nav-list a:hover {
  color: var(--c-accent);
  padding-left: 8px;
}

.footer-nav-list a:hover::after {
  opacity: 1;
}

.footer-contact-line {
  color: rgba(255, 255, 255, 0.72);
  font-size: 14px;
  line-height: 1.8;
}

.footer-contact-note {
  margin-top: 8px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--c-muted);
  font-size: 13px;
  line-height: 1.7;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  max-width: var(--content-w);
  margin-inline: auto;
  padding: 20px 32px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 13px;
  color: var(--c-muted);
}

.footer-copy,
.footer-icp {
  color: rgba(255, 255, 255, 0.5);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 99px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--c-hot);
  color: var(--c-bg);
  box-shadow: 0 4px 18px rgba(255, 106, 0, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 8px 26px rgba(255, 106, 0, 0.45);
}

.btn-accent {
  background: var(--c-accent);
  color: var(--c-bg);
  box-shadow: 0 4px 18px rgba(57, 255, 20, 0.25);
}

.btn-accent:hover {
  box-shadow: 0 8px 26px rgba(57, 255, 20, 0.4);
}

.btn-ghost {
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--c-white);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--c-accent);
  color: var(--c-accent);
  box-shadow: 0 0 20px rgba(57, 255, 20, 0.12);
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--c-muted);
}

.breadcrumb a {
  transition: color 0.25s var(--ease);
}

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

.breadcrumb .sep {
  color: rgba(255, 255, 255, 0.3);
}

.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);
}

.card {
  background: var(--c-card);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(57, 255, 20, 0.5);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 99px;
  font-size: 12px;
  font-weight: 700;
}

.badge-live {
  background: rgba(57, 255, 20, 0.14);
  color: var(--c-accent);
  border: 1px solid rgba(57, 255, 20, 0.3);
}

.badge-live::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 8px var(--c-accent);
  animation: pulse 1.6s ease-in-out infinite;
}

.badge-hot {
  background: rgba(255, 106, 0, 0.14);
  color: var(--c-hot);
  border: 1px solid rgba(255, 106, 0, 0.3);
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(0.8);
  }
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 32px;
}

.kicker {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-accent);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.05;
}

.img-frame {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, var(--c-surface) 0%, #0B1D2A 55%, var(--c-bg) 100%);
}

.img-frame::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background-image:
    radial-gradient(circle at 70% 20%, rgba(57, 255, 20, 0.14), transparent 55%),
    linear-gradient(135deg, transparent 0%, rgba(255, 106, 0, 0.08) 50%, transparent 100%);
}

.img-frame::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  background-image:
    linear-gradient(0deg, rgba(10, 10, 10, 0.55), transparent 65%),
    linear-gradient(90deg, transparent 30%, rgba(57, 255, 20, 0.08) 50%, transparent 70%);
  pointer-events: none;
}

.img-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 0;
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1;
  color: var(--c-white);
}

.stat-value em {
  color: var(--c-accent);
  font-style: normal;
}

.stat-label {
  margin-top: 8px;
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.progress-line {
  height: 6px;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}

.progress-line > span {
  display: block;
  height: 100%;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--c-accent), #A3FF55);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 99px;
  font-size: 12px;
  font-weight: 600;
  color: var(--c-muted);
  background: rgba(255, 255, 255, 0.03);
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.chip:hover {
  color: var(--c-accent);
  border-color: rgba(57, 255, 20, 0.5);
}

.chip[aria-pressed="true"] {
  background: rgba(57, 255, 20, 0.12);
  border-color: var(--c-accent);
  color: var(--c-accent);
}

.accordion-item {
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.03);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.accordion-item.is-open {
  border-color: rgba(57, 255, 20, 0.45);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.06);
}

.accordion-trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  text-align: left;
  color: var(--c-white);
}

.accordion-trigger::after {
  content: '+';
  font-family: var(--font-body);
  font-size: 22px;
  line-height: 1;
  color: var(--c-accent);
  transform: rotate(0deg);
  transition: transform 0.3s var(--ease);
}

.accordion-item.is-open .accordion-trigger::after {
  transform: rotate(45deg);
}

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

.accordion-item.is-open .accordion-panel {
  max-height: 2000px;
}

.accordion-panel-inner {
  padding: 0 20px 18px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 15px;
  line-height: 1.8;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}

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

:focus-visible {
  outline: 2px solid var(--c-hot);
  outline-offset: 3px;
  border-radius: 4px;
}

@media (max-width: 1024px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

  .footer-brand-col {
    grid-column: 1 / -1;
  }
}

@media (max-width: 960px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    width: min(340px, 85vw);
    height: 100vh;
    padding: calc(var(--header-h) + 16px) 24px 24px;
    background: linear-gradient(180deg, var(--c-surface) 0%, #06121B 100%);
    border-left: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: -24px 0 48px rgba(0, 0, 0, 0.4);
    transform: translateX(102%);
    visibility: hidden;
    transition: transform 0.4s var(--ease), visibility 0s linear 0.4s;
    z-index: 101;
  }

  .site-header[data-open] .site-nav {
    transform: translateX(0);
    visibility: visible;
    transition: transform 0.4s var(--ease), visibility 0s linear 0s;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }

  .nav-list a {
    padding: 14px 18px;
    font-size: 16px;
    white-space: normal;
  }

  .nav-list a::after {
    display: none;
  }
}

@media (max-width: 640px) {
  .header-inner {
    padding-inline: 20px;
  }

  .brand-en {
    font-size: 26px;
  }

  .brand-cn {
    font-size: 13px;
  }

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

  .footer-inner {
    grid-template-columns: 1fr;
    padding: 48px 20px 36px;
    gap: 32px;
  }

  .footer-bottom {
    padding: 18px 20px 22px;
    justify-content: flex-start;
  }

  .section-head {
    flex-direction: column;
    align-items: flex-start;
  }

  .container {
    padding-inline: 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

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

  .badge-live::before {
    animation: none;
  }
}