:root {
  --bg: #0A0E17;
  --bg-field: #121A2B;
  --border: #1C2333;
  --blue: #00D4FF;
  --green: #39FF88;
  --red: #FF3B5C;
  --paper: #F5E6C8;
  --muted: #A0A8B8;
  --font-display: "Archivo Black", "Arial Black", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --header-h: 76px;
  --container-max: 1240px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px),
    radial-gradient(circle at 85% 0%, rgba(0,212,255,0.10), transparent 32rem),
    radial-gradient(circle at 0% 70%, rgba(57,255,136,0.06), transparent 28rem);
  background-color: var(--bg);
  background-size: 72px 72px, 72px 72px, auto, auto;
  background-position: 0 0, 0 0, 0 0, 0 0;
  background-attachment: fixed;
}

main {
  display: block;
}

#main-content {
  outline: none;
  min-height: 60vh;
}

h1, h2, h3, h4 {
  margin: 0 0 0.5em;
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--blue);
  text-decoration: none;
}

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

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

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

button {
  font-family: inherit;
}

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

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

.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 44px);
}

.section {
  position: relative;
  padding-block: clamp(72px, 9vw, 128px);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  flex: none;
  width: 32px;
  height: 2px;
  background: var(--green);
}

.section-title {
  font-size: clamp(28px, 5vw, 56px);
  margin-bottom: 0.35em;
}

.section-lead {
  max-width: 720px;
  font-size: clamp(16px, 2vw, 20px);
  color: var(--muted);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 12px 22px;
  border: 1px solid var(--blue);
  background: transparent;
  color: var(--blue);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--bg);
}

.btn:active {
  transform: translateY(1px);
}

.btn--primary {
  background: var(--blue);
  border-color: var(--blue);
  color: var(--bg);
}

.btn--primary:hover {
  background: var(--green);
  border-color: var(--green);
}

.btn--ghost {
  border-color: var(--border);
  color: var(--muted);
}

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

.tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  border: 1px solid var(--border);
  background: var(--bg-field);
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.tag::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--red);
}

.tag--live::before {
  background: var(--green);
  box-shadow: 0 0 10px var(--green);
  animation: pulse 1.6s var(--ease) infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.panel {
  position: relative;
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--border);
  background: var(--bg-field);
}

.figure {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-field);
}

.figure::before {
  content: "";
  display: block;
  padding-top: 62.5%;
}

.figure--tall::before {
  padding-top: 125%;
}

.figure--square::before {
  padding-top: 100%;
}

.figure__empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.12em;
}

.figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(135deg, transparent 60%, rgba(0,212,255,0.08));
}

.divider-line {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 500;
  padding: 10px 18px;
  background: var(--green);
  color: var(--bg);
  font-weight: 800;
  transform: translateY(-160%);
  transition: transform 0.2s var(--ease);
}

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

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  z-index: 240;
  pointer-events: none;
  background: linear-gradient(90deg, var(--blue), var(--green));
  transform: scaleX(0);
  transform-origin: 0 50%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-h);
  background: rgba(10, 14, 23, 0.98);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: var(--header-h);
  padding-inline: clamp(20px, 4vw, 44px);
}

.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--paper);
}

.site-brand:hover {
  color: var(--paper);
}

.site-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 44px;
  height: 44px;
  background: var(--blue);
  color: var(--bg);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.02em;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 8px 100%, 0 calc(100% - 8px));
}

.site-brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.site-brand__name {
  display: block;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.04em;
}

.site-brand__slogan {
  display: block;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--muted);
  white-space: nowrap;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(16px, 2.2vw, 32px);
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(12px, 1.8vw, 28px);
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-nav__item {
  margin: 0;
}

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 8px 2px;
  color: var(--muted);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: color 0.2s var(--ease);
}

.site-nav__link::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.2s var(--ease);
}

.site-nav__link:hover {
  color: var(--paper);
}

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

.site-nav__link[aria-current="page"] {
  color: var(--blue);
}

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

.site-nav__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--blue);
  background: var(--blue);
  color: var(--bg);
  font-size: 14px;
  font-weight: 800;
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.2s var(--ease);
}

.site-nav__cta:hover {
  background: var(--green);
  border-color: var(--green);
  color: var(--bg);
  transform: translateY(-1px);
}

.site-header__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 10px;
  border: 1px solid var(--border);
  background: var(--bg-field);
  cursor: pointer;
}

.burger-line {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--blue);
  transition: transform 0.2s var(--ease), opacity 0.2s var(--ease), background 0.2s var(--ease);
}

.site-header__burger[aria-expanded="true"] .burger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header__burger[aria-expanded="true"] .burger-line:nth-child(2) {
  opacity: 0;
}

.site-header__burger[aria-expanded="true"] .burger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.site-footer {
  padding-block: 64px 32px;
  border-top: 1px solid var(--border);
  background: rgba(10, 14, 23, 0.98);
}

.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.site-footer__top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.8fr) minmax(0, 0.8fr) minmax(0, 1fr);
  gap: 36px;
}

.site-footer__brand {
  max-width: 360px;
}

.site-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--paper);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
}

.site-footer__logo:hover {
  color: var(--paper);
}

.site-footer__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--blue);
  color: var(--bg);
  font-size: 14px;
  clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 7px, 100% 100%, 7px 100%, 0 calc(100% - 7px));
}

.site-footer__slogan {
  margin-top: 12px;
  font-family: var(--font-display);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--paper);
}

.site-footer__trust {
  margin-top: 16px;
  padding-left: 16px;
  border-left: 2px solid var(--green);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.7;
}

.site-footer__links,
.site-footer__contact {
  font-size: 14px;
}

.site-footer__heading {
  margin-bottom: 16px;
  color: var(--paper);
  font-size: 14px;
  letter-spacing: 0.12em;
}

.site-footer__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.site-footer__list--stack {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-footer__list a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.site-footer__list a:hover {
  color: var(--blue);
  padding-left: 4px;
}

.site-footer__links--legal {
  border-left: 1px solid var(--border);
  padding-left: 24px;
}

.site-footer__contact-line {
  margin: 6px 0;
  color: var(--muted);
  font-size: 13px;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0.02em;
}

.js [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s var(--ease), transform 0.5s var(--ease);
}

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

@media (max-width: 1100px) {
  .site-footer__top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 960px) {
  .site-header {
    min-height: 64px;
  }

  .site-header__inner {
    min-height: 64px;
  }

  .site-brand__mark {
    width: 38px;
    height: 38px;
    font-size: 14px;
  }

  .site-brand__name {
    font-size: 18px;
  }

  .site-nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 90;
    width: min(82vw, 340px);
    height: 100vh;
    height: 100dvh;
    padding: calc(var(--header-h) + 24px) 28px 32px;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 24px;
    overflow-y: auto;
    border-left: 1px solid var(--border);
    background: var(--bg-field);
    box-shadow: -24px 0 60px rgba(0, 0, 0, 0.35);
    transform: translateX(103%);
    visibility: hidden;
    transition: transform 0.28s var(--ease), visibility 0.28s;
  }

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

  .site-nav__list {
    flex-direction: column;
    width: 100%;
    gap: 0;
  }

  .site-nav__item {
    border-bottom: 1px solid var(--border);
  }

  .site-nav__item:first-child {
    border-top: 1px solid var(--border);
  }

  .site-nav__link {
    width: 100%;
    justify-content: space-between;
    padding: 14px 2px;
    font-size: 17px;
  }

  .site-nav__cta {
    width: 100%;
    margin-top: 8px;
    min-height: 48px;
  }

  .site-header__burger {
    display: inline-flex;
  }
}

@media (max-width: 620px) {
  .site-brand__slogan {
    display: none;
  }

  .site-footer {
    padding-block: 48px 28px;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .site-footer__links--legal {
    border-left: 0;
    padding-left: 0;
  }

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

@media (max-width: 480px) {
  .container {
    padding-inline: 16px;
  }

  .site-brand__mark {
    width: 34px;
    height: 34px;
    font-size: 13px;
  }

  .site-brand__name {
    font-size: 17px;
  }

  .site-header__inner {
    padding-inline: 16px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

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

  .site-nav {
    transition: none;
  }
}