/* ============ CSS Variables ============ */
:root {
  --color-bg: #0A1F44;
  --color-surface: #0D2A4A;
  --color-accent-green: #39FF14;
  --color-accent-orange: #FF4500;
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #B0C4DE;
  --color-border: #1E3A8A;
  --color-link: #39FF14;
  --color-success: #00FF7F;
  --color-warning: #FFD700;
  --color-info: #00BFFF;

  --font-heading: Impact, 'Arial Black', sans-serif;
  --font-number: 'Roboto Mono', 'Courier New', monospace;
  --font-body: Inter, 'Helvetica Neue', Arial, sans-serif;

  --container-w: 1200px;
  --container-gutter: 24px;

  --header-top-h: 64px;
  --header-bottom-h: 56px;
  --header-total-h: 120px;
  --header-scrolled-top-h: 40px;
  --header-scrolled-bottom-h: 50px;
  --header-scrolled-total-h: 90px;

  --border-thick: 4px;
  --border-thin: 1px;
  --shadow-strong: 12px 12px 0 rgba(0, 0, 0, 0.45);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html[data-header-scrolled] {
  --header-total-h: var(--header-scrolled-total-h);
  --header-top-h: var(--header-scrolled-top-h);
  --header-bottom-h: var(--header-scrolled-bottom-h);
}

/* ============ Reset & Base ============ */
*,
*::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);
  font-size: 16px;
  line-height: 1.65;
  background:
    radial-gradient(ellipse at 85% 0%, rgba(57, 255, 20, 0.07), transparent 45%),
    var(--color-bg);
  color: var(--color-text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-top: var(--header-total-h);
  transition: padding-top 0.35s var(--ease);
}

main {
  flex: 1 0 auto;
  position: relative;
  z-index: 1;
}

#main-content {
  scroll-margin-top: calc(var(--header-total-h) + 20px);
}

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

ul,
ol {
  list-style: none;
}

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

a:hover {
  color: var(--color-accent-green);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

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

/* ============ Skip Link ============ */
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 1200;
  padding: 12px 24px;
  background: var(--color-accent-green);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 14px;
  border-radius: 0 0 8px 8px;
  transition: top 0.25s var(--ease);
}

.skip-link:focus {
  top: 0;
}

.skip-link:hover {
  color: var(--color-bg);
  text-decoration: none;
}

/* ============ Header ============ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-total-h);
  background: var(--color-bg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
  transition: height 0.35s var(--ease);
}

.site-header__progress {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-green) 0%, var(--color-accent-orange) 100%);
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 3;
}

.site-header__top {
  height: var(--header-top-h);
  border-bottom: var(--border-thin) solid var(--color-border);
  transition: height 0.35s var(--ease);
}

.site-header__top-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.site-header__meta {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-shrink: 0;
}

/* Live Indicator */
.site-header__live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: var(--border-thin) solid var(--color-border);
  padding: 6px 14px;
  background: rgba(13, 42, 74, 0.6);
}

.site-header__live-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-accent-orange);
  animation: ayx-pulse 1.8s infinite;
}

.site-header__live-label {
  font-family: var(--font-number);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--color-text-secondary);
}

@keyframes ayx-pulse {
  0% { box-shadow: 0 0 0 0 rgba(255, 69, 0, 0.55); }
  70% { box-shadow: 0 0 0 10px rgba(255, 69, 0, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 69, 0, 0); }
}

/* Brand */
.site-brand {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--color-text-primary);
  text-decoration: none;
  min-width: 0;
}

.site-brand:hover {
  color: var(--color-text-primary);
  text-decoration: none;
}

.site-brand__mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  background: var(--color-accent-green);
  color: var(--color-bg);
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 18px;
  line-height: 1;
  letter-spacing: 0.03em;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
  flex-shrink: 0;
  transition: width 0.35s var(--ease), height 0.35s var(--ease), font-size 0.35s var(--ease), transform 0.3s var(--ease);
}

.site-brand:hover .site-brand__mark {
  transform: rotate(-4deg) scale(1.03);
}

.site-brand__body {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  min-width: 0;
}

.site-brand__name {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
  white-space: nowrap;
}

.site-brand__slogan {
  font-size: 12px;
  color: var(--color-text-secondary);
  letter-spacing: 0.12em;
  white-space: nowrap;
  overflow: hidden;
  max-height: 18px;
  opacity: 1;
  transition: opacity 0.25s var(--ease), max-height 0.3s var(--ease);
}

html[data-header-scrolled] .site-brand__slogan {
  opacity: 0;
  max-height: 0;
}

html[data-header-scrolled] .site-brand__mark {
  width: 38px;
  height: 38px;
  font-size: 15px;
}

html[data-header-scrolled] .site-brand__name {
  font-size: 18px;
}

/* Header Bottom & Nav */
.site-header__bottom {
  height: var(--header-bottom-h);
  transition: height 0.35s var(--ease);
}

.site-header__bottom-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.site-header__ticker {
  font-family: var(--font-number);
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--color-text-secondary);
  opacity: 0.55;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
  height: 100%;
}

.site-nav__item {
  height: 100%;
}

.site-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 18px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-text-primary);
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 4px;
  background: var(--color-accent-green);
  transform: translateX(-50%);
  transition: width 0.3s var(--ease);
}

.site-nav__link:hover {
  color: var(--color-accent-green);
  text-decoration: none;
}

.site-nav__link:hover::after {
  width: 100%;
}

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

.site-nav__link[aria-current="page"]::after {
  width: 100%;
  background: var(--color-accent-orange);
}

/* Nav Toggle (mobile) */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: transparent;
  border: 2px solid var(--color-border);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

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

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

.nav-toggle__bar {
  height: 2px;
  background: currentColor;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-active .nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-toggle__label {
  font-size: 13px;
  letter-spacing: 0.08em;
}

/* ============ Footer ============ */
.site-footer {
  background: var(--color-surface);
  border-top: var(--border-thick) solid var(--color-border);
  position: relative;
  z-index: 2;
  margin-top: 80px;
}

.site-footer__speedline {
  height: 32px;
  background: repeating-linear-gradient(
    -45deg,
    var(--color-accent-green) 0 8px,
    transparent 8px 16px
  );
  opacity: 0.14;
  border-bottom: var(--border-thin) solid var(--color-border);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 1.1fr 2.2fr;
  gap: 48px;
  padding: 56px 0 40px;
}

.site-footer__brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
}

.site-footer__mark {
  width: 52px;
  height: 52px;
  font-size: 20px;
  margin-bottom: 8px;
}

.site-footer__name {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-text-primary);
}

.site-footer__slogan {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-top: 4px;
  letter-spacing: 0.05em;
}

.site-footer__note {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-top: 16px;
  border-left: 3px solid var(--color-accent-green);
  padding-left: 12px;
}

.site-footer__nav {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.site-footer__heading {
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  padding-bottom: 8px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--color-border);
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.site-footer__item {
  font-size: 14px;
  color: var(--color-text-secondary);
}

.site-footer__link {
  color: var(--color-text-secondary);
  font-size: 14px;
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}

.site-footer__link:hover {
  color: var(--color-accent-green);
  padding-left: 4px;
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding: 20px 0;
  border-top: var(--border-thin) solid var(--color-border);
  font-size: 13px;
  color: var(--color-text-secondary);
}

.site-footer__copyright {
  margin-right: auto;
}

.site-footer__icp {
  letter-spacing: 0.04em;
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  border: var(--border-thick) solid var(--color-accent-green);
  color: var(--color-accent-green);
  background: transparent;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: background-color 0.25s var(--ease), color 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.btn:hover {
  background: var(--color-accent-green);
  color: var(--color-bg);
  text-decoration: none;
}

.btn--solid {
  background: var(--color-accent-green);
  color: var(--color-bg);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.4);
}

.btn--solid:hover {
  background: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
  color: var(--color-bg);
}

.btn--outline {
  border-color: var(--color-accent-orange);
  color: var(--color-accent-orange);
}

.btn--outline:hover {
  background: var(--color-accent-orange);
  border-color: var(--color-accent-orange);
  color: var(--color-bg);
}

/* ============ Breadcrumbs ============ */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  padding: 16px 0;
  font-size: 14px;
}

.breadcrumbs__item {
  color: var(--color-text-secondary);
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: '/';
  margin: 0 8px;
  color: var(--color-border);
}

.breadcrumbs__link {
  color: var(--color-text-secondary);
}

.breadcrumbs__link:hover {
  color: var(--color-accent-green);
}

.breadcrumbs__current {
  color: var(--color-text-primary);
  font-weight: 700;
}

/* ============ Page Hero ============ */
.page-hero {
  position: relative;
  padding: 64px 0 56px;
  border-bottom: var(--border-thick) solid var(--color-border);
  overflow: hidden;
}

.page-hero::after {
  content: '';
  position: absolute;
  right: -40px;
  top: 0;
  width: 180px;
  height: 180px;
  background: repeating-linear-gradient(
    -45deg,
    var(--color-accent-orange) 0 4px,
    transparent 4px 14px
  );
  opacity: 0.08;
  pointer-events: none;
}

.page-hero__title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(38px, 7vw, 72px);
  line-height: 1.05;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  max-width: 800px;
}

.page-hero__lead {
  font-size: 18px;
  color: var(--color-text-secondary);
  max-width: 640px;
  margin-top: 16px;
}

/* ============ Section Header ============ */
.section-header {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 16px 20px;
  margin-bottom: 40px;
  padding-bottom: 16px;
  border-bottom: var(--border-thick) solid var(--color-border);
}

.section-header__index {
  font-family: var(--font-number);
  font-size: 18px;
  font-weight: 700;
  color: var(--color-accent-green);
}

.section-header__title {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 48px);
  line-height: 1.1;
  letter-spacing: 0.02em;
}

.section-header__sub {
  font-size: 15px;
  color: var(--color-text-secondary);
  margin-left: auto;
  max-width: 320px;
  text-align: right;
}

/* ============ Cards ============ */
.card {
  background: var(--color-surface);
  border: var(--border-thick) solid var(--color-border);
  box-shadow: var(--shadow-strong);
  padding: 28px;
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 6px 6px 0 var(--color-accent-green);
  border-color: var(--color-accent-green);
}

.card--tilt {
  transform: rotate(-1.5deg);
}

.card--tilt:hover {
  transform: rotate(0deg) translateY(-6px);
}

/* ============ Data Grid ============ */
.data-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}

.data-grid__item {
  padding: 20px;
  border-left: var(--border-thick) solid var(--color-accent-green);
  background: var(--color-surface);
}

.data-grid__value {
  font-family: var(--font-number);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--color-text-primary);
}

.data-grid__label {
  font-size: 13px;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

/* ============ Tabs ============ */
.tabs {
  margin: 24px 0 40px;
}

.tab-list {
  display: flex;
  flex-wrap: nowrap;
  gap: 4px;
  border-bottom: 3px solid var(--color-border);
  overflow-x: auto;
  padding-bottom: 0;
}

.tab {
  flex: 0 0 auto;
  padding: 12px 24px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: 2px solid var(--color-border);
  border-bottom: none;
  cursor: pointer;
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease), border-color 0.2s var(--ease);
  white-space: nowrap;
}

.tab:hover {
  color: var(--color-accent-green);
  border-color: var(--color-accent-green);
}

.tab[aria-selected="true"] {
  background: var(--color-accent-green);
  color: var(--color-bg);
  border-color: var(--color-accent-green);
}

.tab[aria-selected="true"]:hover {
  color: var(--color-bg);
}

.tab-panel {
  padding: 24px 4px;
}

.tab-panel[hidden] {
  display: none;
}

/* ============ Image Container ============ */
.image-container {
  position: relative;
  overflow: hidden;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: 4px;
}

.image-container > img,
.image-container > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s var(--ease);
}

.image-container:hover > img,
.image-container:hover > picture > img {
  transform: scale(1.03);
}

/* ============ Speed Line ============ */
.speed-line {
  height: 64px;
  pointer-events: none;
  background: repeating-linear-gradient(
    -45deg,
    var(--color-accent-green) 0 10px,
    transparent 10px 20px
  );
  opacity: 0.12;
}

/* ============ Responsive ============ */
@media (min-width: 769px) and (max-width: 1024px) {
  .site-nav__link {
    padding: 0 12px;
    font-size: 14px;
  }

  .site-brand__slogan {
    display: none;
  }

  .site-header__live {
    padding: 4px 10px;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-top-h: 52px;
    --header-bottom-h: 0px;
    --header-total-h: 52px;
    --header-scrolled-top-h: 44px;
    --header-scrolled-bottom-h: 0px;
    --header-scrolled-total-h: 44px;
    --container-gutter: 16px;
  }

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

  .site-header__live {
    display: none;
  }

  .site-header__top-inner {
    justify-content: space-between;
  }

  .site-header__bottom {
    display: none;
    height: auto;
  }

  .site-header[data-open] .site-header__bottom {
    display: block;
    position: fixed;
    top: var(--header-total-h);
    left: 0;
    right: 0;
    z-index: 1;
    background: var(--color-surface);
    border-bottom: 3px solid var(--color-accent-green);
    box-shadow: 0 24px 32px rgba(0, 0, 0, 0.5);
    max-height: calc(100vh - var(--header-total-h));
    overflow-y: auto;
  }

  .site-header__bottom-inner {
    display: block;
    height: auto;
    padding: 0;
  }

  .site-header__ticker {
    display: none;
  }

  .site-nav__list {
    flex-direction: column;
    height: auto;
    gap: 0;
  }

  .site-nav__item {
    height: auto;
  }

  .site-nav__link {
    height: auto;
    padding: 16px 24px;
    border-bottom: var(--border-thin) solid var(--color-border);
    font-size: 16px;
  }

  .site-nav__link::after {
    display: none;
  }

  .site-nav__link[aria-current="page"] {
    background: rgba(57, 255, 20, 0.08);
    border-left: 4px solid var(--color-accent-green);
    color: var(--color-accent-green);
  }

  .site-brand__mark {
    width: 38px;
    height: 38px;
    font-size: 15px;
  }

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

  html[data-header-scrolled] .site-brand__slogan {
    display: none;
  }

  .site-footer__top {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 40px 0 32px;
  }

  .site-footer__nav {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .site-footer__mark {
    width: 44px;
    height: 44px;
    font-size: 17px;
  }

  .page-hero {
    padding: 44px 0 36px;
  }

  .section-header__sub {
    margin-left: 0;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .site-footer__nav {
    grid-template-columns: 1fr;
  }

  .site-footer__bottom {
    flex-direction: column;
    gap: 4px;
  }

  .site-footer__copyright {
    margin-right: 0;
  }
}

/* ============ Reduced Motion ============ */
@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;
  }
}