:root {
  --color-primary-bg: #0A101A;
  --color-secondary-bg: #0F1B24;
  --color-panel-bg: #14252F;
  --color-accent-orange: #FF6B00;
  --color-accent-blue: #00D4FF;
  --color-accent-purple: #7A5AF8;
  --color-text-primary: #F5F7FA;
  --color-text-muted: #A0B0C0;
  --color-border-regular: #23404D;
  --color-success-green: #00D68F;
  --font-family-base: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-size-title: clamp(2rem, 4vw, 4rem);
  --font-size-body: clamp(1rem, 1.2vw, 1.25rem);
  --font-size-small: 0.875rem;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-pill: 999px;
  --container-max: 1280px;
  --container-pad: clamp(1rem, 4vw, 2.5rem);
  --header-height: 80px;
  --header-height-mobile: 64px;
  --shadow-glow-orange: 0 0 28px rgba(255, 107, 0, 0.3);
  --shadow-glow-blue: 0 0 28px rgba(0, 212, 255, 0.25);
  --shadow-panel: 0 12px 40px rgba(0, 0, 0, 0.35);
}

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

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

body {
  min-height: 100vh;
  font-family: var(--font-family-base);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-primary);
  background: var(--color-primary-bg);
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
}

body.is-nav-open {
  overflow: hidden;
}

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

a {
  color: var(--color-accent-blue);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-accent-orange);
}

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

ul, ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--color-accent-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

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

.container-wide {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--color-accent-orange);
  color: #0A101A;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transform: translateY(-200%);
  transition: transform 0.2s ease;
}

.skip-link:focus {
  transform: translateY(0);
  color: #0A101A;
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-blue));
  box-shadow: 0 0 12px rgba(0, 212, 255, 0.4);
  z-index: 2000;
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 16, 26, 0.94);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-regular);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-orange) 0%, var(--color-accent-blue) 55%, transparent 100%);
}

.site-header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent 10%, var(--color-accent-blue) 50%, transparent 90%);
  opacity: 0.55;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: var(--header-height);
}

.site-header__brand {
  flex-shrink: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text-primary);
}

.brand:hover {
  color: var(--color-text-primary);
}

.brand__mark {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: linear-gradient(135deg, var(--color-accent-orange) 0%, #FF8A3C 100%);
  border-radius: 14px;
  transform: skewX(-8deg);
  box-shadow: var(--shadow-glow-orange);
}

.brand__mark-text {
  font-weight: 900;
  font-size: 0.9375rem;
  letter-spacing: 0.02em;
  color: #0A101A;
  transform: skewX(8deg);
}

.brand__mark-line {
  position: absolute;
  right: -4px;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 20px;
  background: var(--color-accent-blue);
  border-radius: 4px;
  box-shadow: 0 0 8px rgba(0, 212, 255, 0.5);
}

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

.brand__name {
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: 0.02em;
  color: var(--color-text-primary);
}

.brand__badge {
  align-self: flex-start;
  margin-top: 3px;
  padding: 2px 8px;
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--color-accent-blue);
  background: rgba(0, 212, 255, 0.12);
  border: 1px solid rgba(0, 212, 255, 0.28);
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--color-border-regular);
  background: var(--color-secondary-bg);
  transition: border-color 0.2s ease, background 0.2s ease;
}

.nav-toggle:hover {
  border-color: var(--color-accent-orange);
  background: rgba(255, 107, 0, 0.08);
}

.nav-toggle__bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text-primary);
  transition: background 0.2s ease, transform 0.3s ease, opacity 0.2s ease;
}

.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);
}

.site-nav {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 990;
  visibility: hidden;
  pointer-events: none;
}

.site-nav[data-open="true"] {
  visibility: visible;
  pointer-events: auto;
}

.site-nav__mask {
  position: absolute;
  inset: 0;
  background: rgba(10, 16, 26, 0.72);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.site-nav[data-open="true"] .site-nav__mask {
  opacity: 1;
}

.site-nav__panel {
  position: absolute;
  top: var(--header-height-mobile);
  right: 0;
  bottom: 0;
  width: min(320px, 88vw);
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  background: var(--color-secondary-bg);
  border-left: 1px solid var(--color-border-regular);
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.site-nav__panel:focus {
  outline: none;
}

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

.site-nav__header {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border-regular);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-nav__title {
  font-size: var(--font-size-small);
  font-weight: 700;
  color: var(--color-text-primary);
  letter-spacing: 0.04em;
}

.site-nav__subtitle {
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  opacity: 0.7;
}

.site-nav__track {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-nav__link {
  display: block;
  position: relative;
  padding: 12px 16px;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text-primary);
  border-radius: var(--radius-md);
  transition: color 0.2s ease, background 0.2s ease;
}

.site-nav__link:hover {
  color: var(--color-accent-orange);
  background: rgba(255, 107, 0, 0.07);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-accent-blue);
  background: rgba(0, 212, 255, 0.08);
}

.site-nav__status {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-regular);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.site-nav__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success-green);
  box-shadow: 0 0 10px rgba(0, 214, 143, 0.6);
  animation: status-pulse 2.2s ease-in-out infinite;
}

@keyframes status-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.45; transform: scale(0.85); }
}

@media (min-width: 769px) {
  .site-nav {
    position: static;
    visibility: visible;
    pointer-events: auto;
    z-index: auto;
  }

  .site-nav__mask {
    display: none;
  }

  .site-nav__panel {
    position: static;
    top: auto;
    right: auto;
    bottom: auto;
    width: auto;
    height: auto;
    padding: 0;
    background: transparent;
    border-left: none;
    transform: none;
    flex-direction: row;
    align-items: center;
    gap: 6px;
  }

  .site-nav__header,
  .site-nav__status {
    display: none;
  }

  .site-nav__track {
    flex-direction: row;
    gap: 4px;
  }

  .site-nav__link {
    font-size: 0.9375rem;
    padding: 10px 16px;
    border-radius: var(--radius-pill);
  }

  .site-nav__link::after {
    content: "";
    position: absolute;
    left: 16px;
    right: 16px;
    bottom: 5px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-accent-orange);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.25s ease;
  }

  .site-nav__link:hover::after {
    transform: scaleX(1);
  }

  .site-nav__link[aria-current="page"]::after {
    background: var(--color-accent-blue);
    transform: scaleX(1);
  }

  .nav-toggle {
    display: none;
  }
}

@media (max-width: 768px) {
  .site-header__inner {
    height: var(--header-height-mobile);
  }

  .nav-toggle {
    display: flex;
  }
}

.site-footer {
  margin-top: auto;
  position: relative;
  background: var(--color-primary-bg);
  border-top: 1px solid var(--color-border-regular);
}

.site-footer__beam {
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-blue), var(--color-accent-purple));
  opacity: 0.85;
}

.site-footer__top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-top: 48px;
  padding-bottom: 40px;
}

.site-footer__block {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.site-footer__logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-footer__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--color-accent-orange), #FF8A3C);
  border-radius: 12px;
  transform: skewX(-8deg);
  font-weight: 900;
  font-size: 0.875rem;
  color: #0A101A;
  box-shadow: var(--shadow-glow-orange);
}

.site-footer__mark:hover {
  color: #0A101A;
}

.site-footer__brand-name {
  font-weight: 900;
  font-size: 1.25rem;
  color: var(--color-text-primary);
}

.site-footer__trust {
  margin-top: 14px;
  max-width: 38ch;
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.site-footer__badge {
  display: inline-block;
  margin-top: 14px;
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-accent-blue);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.22);
  border-radius: var(--radius-pill);
}

.site-footer__heading {
  position: relative;
  margin-bottom: 16px;
  padding-left: 12px;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--color-text-primary);
}

.site-footer__heading::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.5em;
  width: 4px;
  height: 14px;
  background: var(--color-accent-orange);
  border-radius: 2px;
}

.site-footer__link {
  padding: 4px 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  transition: color 0.2s ease, transform 0.2s ease;
}

.site-footer__link:hover {
  color: var(--color-accent-orange);
  transform: translateX(4px);
}

.site-footer__contact-item {
  margin-bottom: 4px;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.site-footer__bottom {
  border-top: 1px solid var(--color-border-regular);
}

.site-footer__bottom-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding-top: 16px;
  padding-bottom: 16px;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.site-footer__icp {
  letter-spacing: 0.02em;
}

@media (min-width: 769px) and (max-width: 1023px) {
  .site-footer__top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 30px;
    padding-top: 40px;
    padding-bottom: 28px;
  }

  .site-footer__bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

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

.site-breadcrumb__link {
  color: var(--color-text-muted);
  padding: 2px 0;
}

.site-breadcrumb__link:hover {
  color: var(--color-accent-orange);
}

.site-breadcrumb__sep {
  opacity: 0.5;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.btn--primary {
  background: var(--color-accent-orange);
  color: #0A101A;
}

.btn--primary:hover {
  background: #FF8A3C;
  color: #0A101A;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-orange);
}

.btn--outline {
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  background: transparent;
}

.btn--outline:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow-blue);
}

.site-card {
  padding: 24px;
  background: var(--color-panel-bg);
  border: 1px solid var(--color-border-regular);
  border-radius: var(--radius-lg);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.site-card:hover {
  border-color: rgba(0, 212, 255, 0.45);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25), 0 0 20px rgba(0, 212, 255, 0.08);
  transform: translateY(-3px);
}

.site-tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(122, 90, 248, 0.14);
  color: var(--color-accent-purple);
  border: 1px solid rgba(122, 90, 248, 0.3);
}

.site-figure {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--color-secondary-bg);
  border: 1px solid var(--color-border-regular);
}

.site-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.site-figure:hover img {
  transform: scale(1.03);
}

.site-figure--ratio-16-9 {
  aspect-ratio: 16 / 9;
}

.site-figure--ratio-4-3 {
  aspect-ratio: 4 / 3;
}

.site-figure--ratio-3-2 {
  aspect-ratio: 3 / 2;
}

.site-figure--ratio-tall {
  aspect-ratio: 3 / 4;
}

.site-figure__overlay {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px;
  background: linear-gradient(180deg, transparent 0%, rgba(10, 16, 26, 0.82) 100%);
  color: var(--color-text-primary);
  font-size: 0.875rem;
  font-weight: 500;
}

.site-section {
  padding: clamp(32px, 6vw, 80px) 0;
}

.site-section__inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.site-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(12, 1fr);
}

.site-grid__item {
  grid-column: span 4;
}

@media (min-width: 769px) and (max-width: 1023px) {
  .site-grid__item {
    grid-column: span 6;
  }
}

@media (max-width: 768px) {
  .site-grid__item {
    grid-column: span 12;
  }
}

.site-content {
  max-width: 72ch;
  line-height: 1.9;
  color: rgba(245, 247, 250, 0.88);
}

.site-content h1,
.site-content h2,
.site-content h3,
.site-content h4 {
  color: var(--color-text-primary);
  font-weight: 900;
  line-height: 1.3;
}

.site-content h1 {
  font-size: var(--font-size-title);
  transform: skewX(-4deg);
  margin-bottom: 0.5em;
}

.site-content h2 {
  font-size: clamp(1.375rem, 2.5vw, 2.25rem);
  transform: skewX(-4deg);
  margin-top: 2em;
  margin-bottom: 0.4em;
}

.site-content h3 {
  font-size: 1.375rem;
  margin-top: 1.5em;
  margin-bottom: 0.3em;
}

.site-content p {
  margin-top: 1em;
}

.site-content a {
  color: var(--color-accent-blue);
  border-bottom: 1px solid rgba(0, 212, 255, 0.35);
}

.site-content a:hover {
  color: var(--color-accent-orange);
  border-bottom-color: rgba(255, 107, 0, 0.4);
}

@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;
  }

  .site-figure img,
  .site-nav__link::after {
    transition: none;
  }
}