:root {
  --c-primary: #0A192F;
  --c-primary-light: #112240;
  --c-primary-dark: #020C1B;
  --c-green: #64FFDA;
  --c-orange: #FF6B35;
  --c-light: #F5F7FA;
  --c-text: #E6F1FF;
  --c-dim: #8892B0;
  --c-border: #233554;
  --c-ok: #3DD68C;
  --font-heading: "Archivo Black", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --header-h: 74px;
  --header-h-sm: 62px;
  --container: 1280px;
  --container-narrow: 900px;
  --container-wide: 1480px;
  --gutter: 24px;
  --ease: cubic-bezier(.2, .7, .2, 1);
  --shadow-1: 0 14px 32px rgba(2, 12, 27, .28);
  --read-progress: 0;
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  background: var(--c-primary-dark);
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

main {
  display: block;
}

#main-content {
  scroll-margin-top: calc(var(--header-h) + 12px);
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  color: var(--c-text);
  line-height: 1.12;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--c-green);
  text-decoration-thickness: 2px;
  text-underline-offset: 4px;
}

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

ul, ol {
  margin: 0;
  padding-left: 1.2em;
}

button {
  font: inherit;
}

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

[hidden] {
  display: none !important;
}

::selection {
  background: var(--c-orange);
  color: var(--c-primary-dark);
}

:focus-visible {
  outline: 3px solid var(--c-green);
  outline-offset: 3px;
}

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

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 3000;
  padding: 10px 16px;
  background: var(--c-orange);
  color: var(--c-primary-dark);
  font-family: var(--font-mono);
  font-size: 13px;
  text-decoration: none;
  transform: translateY(-220%);
  transition: transform .25s var(--ease);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 25, 48, .88);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--c-border);
  box-shadow: 0 6px 24px rgba(2, 12, 27, .12);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}

.site-header[data-scrolled="true"] {
  background: rgba(2, 12, 27, .92);
  box-shadow: 0 12px 30px rgba(2, 12, 27, .36);
}

.site-header::before {
  content: "";
  position: absolute;
  top: -46px;
  right: 6%;
  z-index: 0;
  width: 220px;
  height: 120px;
  background: linear-gradient(100deg, rgba(100, 255, 218, .14), transparent 65%);
  transform: skewX(-18deg);
  pointer-events: none;
}

.site-header::after {
  content: "";
  position: absolute;
  top: -34px;
  left: 18%;
  z-index: 0;
  width: 180px;
  height: 84px;
  background: linear-gradient(100deg, transparent 30%, rgba(255, 107, 53, .12));
  transform: skewX(24deg);
  pointer-events: none;
}

.read-progress {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 5;
  width: 100%;
  height: 3px;
  pointer-events: none;
}

.read-progress::after {
  content: "";
  display: block;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, var(--c-green), var(--c-orange));
  transform: scaleX(var(--read-progress, 0));
  transform-origin: left center;
  transition: transform 80ms linear;
}

.header-inner {
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin-inline: auto;
  min-height: var(--header-h);
  padding: 0 var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-inline: 1px solid rgba(35, 53, 84, .72);
  transition: min-height .3s var(--ease);
}

.site-header[data-scrolled="true"] .header-inner {
  min-height: var(--header-h-sm);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
  text-decoration: none;
  color: var(--c-text);
}

.brand-mark {
  position: relative;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--c-green), var(--c-orange));
  clip-path: polygon(18% 0, 100% 0, 100% 82%, 82% 100%, 0 100%, 0 18%);
  overflow: hidden;
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 3px;
  background: var(--c-primary-dark);
  clip-path: polygon(18% 0, 100% 0, 100% 82%, 82% 100%, 0 100%, 0 18%);
  opacity: .88;
}

.brand-symbol {
  position: relative;
  z-index: 1;
  font-family: var(--font-heading);
  font-size: 18px;
  line-height: 1;
  color: var(--c-green);
}

.brand-rule {
  position: absolute;
  z-index: 1;
  bottom: 9px;
  left: 8px;
  width: 17px;
  height: 2px;
  background: var(--c-orange);
  transform: rotate(-14deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 18px;
  letter-spacing: .02em;
}

.brand-sub {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--c-dim);
}

.site-nav {
  position: static;
}

.nav-list {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 2px;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: block;
  padding: 10px 14px;
  color: var(--c-text);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  border-bottom: 2px solid transparent;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.nav-link:hover {
  color: var(--c-green);
  background: linear-gradient(0deg, rgba(100, 255, 218, .06), transparent 75%);
}

.nav-link[aria-current="page"] {
  color: var(--c-green);
  border-bottom-color: var(--c-orange);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.search-toggle {
  display: inline-grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 0;
  color: var(--c-text);
  cursor: pointer;
  border-radius: 2px;
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.search-toggle:hover {
  color: var(--c-green);
  transform: translateY(-1px);
}

.search-toggle-icon {
  display: grid;
  place-items: center;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: transparent;
  border: 1px solid var(--c-border);
  border-radius: 2px;
  color: var(--c-text);
  cursor: pointer;
}

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

.nav-toggle-box {
  position: relative;
  width: 22px;
  height: 14px;
  display: block;
}

.nav-toggle-box i {
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background: currentColor;
  transition: top .25s var(--ease), transform .25s var(--ease), opacity .2s var(--ease);
}

.nav-toggle-box i:nth-child(1) {
  top: 0;
}

.nav-toggle-box i:nth-child(2) {
  top: 6px;
}

.nav-toggle-box i:nth-child(3) {
  top: 12px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box i:nth-child(1) {
  top: 6px;
  transform: rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-box i:nth-child(3) {
  top: 6px;
  transform: rotate(-45deg);
}

.nav-toggle-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
}

.quick-search {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 900;
  background: rgba(2, 12, 27, .97);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--c-border);
  box-shadow: var(--shadow-1);
  padding: 22px 0 28px;
}

.quick-search-inner {
  max-width: calc(var(--container) - 48px);
  margin-inline: auto;
  padding: 0 16px;
}

.quick-search-label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-green);
  text-transform: uppercase;
}

.quick-search-input {
  width: 100%;
  padding: 14px 16px;
  background: var(--c-primary-light);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 16px;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.quick-search-input::placeholder {
  color: var(--c-dim);
}

.quick-search-input:focus {
  outline: none;
  border-color: var(--c-green);
  box-shadow: 0 0 0 3px rgba(100, 255, 218, .14);
}

.quick-search-results {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 16px;
  margin-top: 18px;
}

.quick-search-result {
  display: block;
  padding: 10px 12px;
  color: var(--c-text);
  text-decoration: none;
  background: transparent;
  border-left: 2px solid var(--c-border);
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}

.quick-search-result:hover {
  color: var(--c-green);
  background: var(--c-primary-light);
  border-left-color: var(--c-orange);
}

@media (max-width: 1023px) {
  .site-nav {
    position: absolute;
    left: 50%;
    right: auto;
    top: 100%;
    width: 100vw;
    transform: translateX(-50%);
    display: none;
    background: rgba(2, 12, 27, .98);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow-1);
    padding: 14px var(--gutter) 24px;
  }

  .site-nav[data-open] {
    display: block;
  }

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

  .nav-link {
    padding: 14px 12px;
    border-bottom: 1px solid rgba(35, 53, 84, .8);
    border-left: 2px solid transparent;
  }

  .nav-link:hover {
    border-left-color: var(--c-green);
    background: linear-gradient(90deg, rgba(100, 255, 218, .07), transparent 70%);
  }

  .nav-link[aria-current="page"] {
    border-left-color: var(--c-orange);
    border-bottom-color: transparent;
  }

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

  .header-inner {
    border-inline: 0;
  }
}

.site-footer {
  position: relative;
  margin-top: auto;
  background: var(--c-primary-dark);
  color: var(--c-text);
  border-top: 1px solid var(--c-border);
  overflow: hidden;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -130px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: radial-gradient(circle, rgba(100, 255, 218, .14), transparent 68%);
  pointer-events: none;
}

.site-footer::after {
  content: "";
  position: absolute;
  left: -120px;
  bottom: -110px;
  width: 330px;
  height: 230px;
  background: linear-gradient(135deg, var(--c-orange), transparent 70%);
  opacity: .12;
  clip-path: polygon(0 30%, 100% 0, 100% 100%, 0 100%);
  transform: skewY(-3deg);
  pointer-events: none;
}

.footer-sweep {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-green), var(--c-orange));
  opacity: .8;
  pointer-events: none;
}

.footer-inner {
  position: relative;
  z-index: 1;
  max-width: var(--container);
  margin-inline: auto;
  padding: 80px var(--gutter) 32px;
  border-inline: 1px solid rgba(35, 53, 84, .55);
}

.footer-main {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  gap: clamp(40px, 7vw, 96px);
}

.footer-left {
  max-width: 58ch;
}

.footer-brand {
  margin-bottom: 22px;
}

.footer-brand .brand-mark {
  width: 40px;
  height: 40px;
}

.footer-slogan {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  line-height: 1.2;
  color: var(--c-text);
}

.footer-about {
  margin: 0 0 20px;
  color: var(--c-dim);
  font-size: 15px;
  line-height: 1.85;
}

.trust-statement {
  margin: 0;
  padding: 18px 20px;
  background: linear-gradient(120deg, rgba(100, 255, 218, .09), rgba(255, 107, 53, .05));
  border-left: 3px solid var(--c-green);
  color: var(--c-text);
  font-size: 14px;
  line-height: 1.75;
}

.footer-right {
  min-width: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr .9fr;
  column-gap: clamp(24px, 4vw, 56px);
  row-gap: 28px;
}

.footer-block {
  min-width: 0;
}

.footer-heading {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-green);
}

.footer-contact-list,
.footer-quick-links {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-contact-list {
  display: grid;
  gap: 16px;
}

.footer-contact-item {
  display: grid;
  gap: 2px;
}

.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--c-dim);
  text-transform: uppercase;
}

.footer-contact-value {
  font-size: 15px;
  color: var(--c-text);
  word-break: break-all;
}

.footer-quick-links {
  display: grid;
  gap: 10px;
}

.footer-quick-links a {
  display: inline-block;
  color: var(--c-dim);
  text-decoration: none;
  transition: color .2s var(--ease), transform .2s var(--ease);
}

.footer-quick-links a:hover {
  color: var(--c-green);
  transform: translateX(4px);
}

.footer-icp-block {
  grid-column: 1 / -1;
  padding-top: 24px;
  border-top: 1px solid rgba(35, 53, 84, .6);
}

.footer-icp {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--c-dim);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid rgba(35, 53, 84, .8);
  color: var(--c-dim);
  font-size: 13px;
}

.footer-bottom p {
  margin: 0;
}

.footer-copy {
  display: flex;
  gap: 4px;
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--c-dim);
}

@media (max-width: 1023px) {
  .footer-main {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .footer-inner {
    border-inline: 0;
  }
}

@media (max-width: 639px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .footer-icp-block {
    grid-column: auto;
  }

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

.container {
  width: min(100% - var(--gutter) * 2, var(--container));
  margin-inline: auto;
}

.container--narrow {
  max-width: var(--container-narrow);
}

.container--wide {
  max-width: var(--container-wide);
}

.section {
  position: relative;
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}

.section--tight {
  padding-block: clamp(2.5rem, 5vw, 4rem);
}

.section--light {
  background: var(--c-light);
  color: var(--c-primary-dark);
}

.section--light .section-title,
.section--light .page-head__title,
.section--light h1,
.section--light h2,
.section--light h3 {
  color: var(--c-primary-dark);
}

.section-head {
  margin-bottom: 40px;
}

.section-kicker,
.page-head__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-orange);
}

.section-kicker::before,
.page-head__eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 2px;
  background: var(--c-orange);
}

.section-title {
  margin: 0 0 14px;
  font-size: clamp(1.9rem, 3.6vw, 3.2rem);
  line-height: 1.05;
}

.section-lead {
  margin: 0;
  max-width: 58ch;
  color: var(--c-dim);
  font-size: 16px;
}

.page-head {
  position: relative;
  padding: clamp(72px, 12vw, 140px) 0 32px;
}

.page-head__title {
  margin: 8px 0 20px;
  font-size: clamp(2.5rem, 6vw, 5.2rem);
  line-height: .95;
  letter-spacing: -0.02em;
}

.page-head__lead {
  margin: 0;
  max-width: 60ch;
  color: var(--c-dim);
  font-size: 17px;
  line-height: 1.8;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-dim);
}

.breadcrumb a {
  color: var(--c-dim);
  text-decoration: none;
}

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

.breadcrumb [aria-current="page"] {
  color: var(--c-green);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.btn--primary {
  background: var(--c-orange);
  border-color: var(--c-orange);
  color: var(--c-primary-dark);
}

.btn--primary:hover {
  background: transparent;
  color: var(--c-orange);
  transform: translateY(-2px);
}

.btn--ghost {
  background: transparent;
  border-color: var(--c-green);
  color: var(--c-green);
}

.btn--ghost:hover {
  background: var(--c-green);
  color: var(--c-primary-dark);
  transform: translateY(-2px);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 13px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 24px;
}

.card {
  grid-column: span 4;
  padding: clamp(1.25rem, 3vw, 2rem);
  background: var(--c-primary-light);
  border: 1px solid var(--c-border);
  border-radius: 2px;
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--c-orange);
}

.card--wide {
  grid-column: span 8;
}

.card--accent {
  border-top: 3px solid var(--c-green);
}

@media (max-width: 1023px) {
  .card {
    grid-column: span 6;
  }
}

@media (max-width: 639px) {
  .card {
    grid-column: span 12;
  }
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.stat {
  padding: 24px;
  background: var(--c-primary-light);
  border: 1px solid var(--c-border);
  border-left: 3px solid var(--c-green);
}

.stat__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-dim);
}

.stat__value {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1;
  color: var(--c-green);
}

@media (max-width: 767px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--c-border);
}

.timeline__item {
  position: relative;
  padding: 0 0 34px 28px;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 8px;
  width: 13px;
  height: 13px;
  background: var(--c-orange);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, .2);
}

.timeline__meta {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--c-dim);
}

.timeline__title {
  margin: 4px 0 8px;
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--c-text);
}

.timeline__body {
  margin: 0;
  color: var(--c-dim);
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--c-primary-light), var(--c-primary-dark));
  border: 1px solid var(--c-border);
}

.media-frame--wide {
  aspect-ratio: 21 / 9;
}

.media-frame--tall {
  aspect-ratio: 4 / 5;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent 20%, rgba(100, 255, 218, .06), transparent 80%);
  pointer-events: none;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .68fr);
  gap: clamp(32px, 5vw, 72px);
  align-items: start;
}

@media (max-width: 991px) {
  .content-grid {
    grid-template-columns: 1fr;
  }
}

.scrollspy-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--c-border);
}

.scrollspy-link {
  display: block;
  margin-left: -1px;
  padding: 10px 16px;
  color: var(--c-dim);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
}

.scrollspy-link:hover {
  color: var(--c-green);
}

.scrollspy-link.is-active,
.scrollspy-link[aria-current="true"] {
  color: var(--c-green);
  border-left-color: var(--c-orange);
  background: rgba(100, 255, 218, .06);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .read-progress::after {
    transition: none;
  }
}