:root {
  --ink-950: #061426;
  --ink-900: #0A1B2E;
  --ink-800: #0C2136;
  --line: #1D3E5C;
  --green: #17B978;
  --cyan: #38D9F0;
  --amber: #FFB020;
  --paper: #F2EFE6;
  --text: #E8F1F7;
  --muted: #9DB4C8;
  --live: #FF5F56;
  --pitch: #0A2B22;
  --font-display: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", Menlo, Consolas, "Courier New", monospace;
  --step-11: 11px;
  --step-13: 13px;
  --step-15: 15px;
  --step-17: 17px;
  --step-20: 20px;
  --step-26: 26px;
  --step-34: 34px;
  --step-48: 48px;
  --step-72: 72px;
  --step-96: 96px;
  --header-h: 78px;
}

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

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

body {
  margin: 0;
  background-color: var(--ink-950);
  background-image:
    linear-gradient(to right, rgba(29, 62, 92, 0.22) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(29, 62, 92, 0.22) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--step-17);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

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

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text);
}

p {
  margin: 0 0 1em;
}

::selection {
  background: var(--amber);
  color: var(--ink-950);
}

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

[hidden] {
  display: none !important;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -70px;
  z-index: 200;
  display: inline-block;
  padding: 10px 14px;
  background: var(--paper);
  color: var(--ink-950);
  font-weight: 700;
  border: 1px solid var(--amber);
  transition: top 0.18s ease;
}

.skip-link:focus {
  top: 12px;
  color: var(--ink-950);
}

.container {
  width: min(1240px, calc(100% - 40px));
  margin-inline: auto;
}

.mono,
.numeric {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.numeric {
  text-align: right;
}

/* Header: scoreboard frame */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(6, 20, 38, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 2px;
  background: transparent;
  pointer-events: none;
}

.scroll-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--green), var(--cyan), var(--amber));
}

.header-rail {
  position: relative;
  border-bottom: 1px solid rgba(29, 62, 92, 0.55);
}

.header-inner {
  display: grid;
  grid-template-columns: minmax(230px, auto) 1fr auto;
  align-items: center;
  gap: 24px;
  min-height: var(--header-h);
}

.brand-block {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--text);
}

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

.brand-mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 44px;
  height: 44px;
  border: 1px solid var(--green);
  background: var(--pitch);
  color: var(--green);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 900;
  line-height: 1;
}

.brand-text {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.15;
}

.brand-line {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text);
}

.brand-descriptor {
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: var(--step-11);
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}

.site-nav {
  justify-self: center;
  min-width: 0;
}

.nav-list {
  display: flex;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  background: rgba(12, 33, 54, 0.72);
}

.nav-item {
  position: relative;
  min-width: 0;
}

.nav-link {
  display: block;
  padding: 12px 14px;
  border-right: 1px solid rgba(29, 62, 92, 0.7);
  color: var(--text);
  font-size: var(--step-13);
  letter-spacing: 0.04em;
  white-space: nowrap;
  transition: background 0.18s ease, color 0.18s ease;
}

.nav-item:last-child .nav-link {
  border-right: 0;
}

.nav-link:hover,
.nav-link:focus-visible {
  background: var(--ink-800);
  color: var(--amber);
}

.nav-link[aria-current="page"] {
  background: var(--green);
  color: var(--ink-950);
  font-weight: 700;
}

.header-utility {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 12px;
  min-width: 0;
}

.subscribe-dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 0 4px rgba(23, 185, 120, 0.14);
}

.utility-label {
  font-size: var(--step-11);
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
  white-space: nowrap;
}

.utility-link {
  border-bottom: 1px dashed rgba(56, 217, 240, 0.5);
  color: var(--cyan);
  font-size: var(--step-13);
  white-space: nowrap;
}

.utility-link:hover {
  border-bottom-color: var(--amber);
  color: var(--amber);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border: 1px solid var(--amber);
  background: var(--amber);
  color: var(--ink-950);
  font-size: var(--step-13);
  font-weight: 700;
  letter-spacing: 0.02em;
  white-space: nowrap;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.header-cta:hover,
.header-cta:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink-950);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  color: var(--text);
}

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

.nav-toggle-label {
  font-size: var(--step-13);
  letter-spacing: 0.08em;
}

.nav-toggle-bars {
  display: grid;
  gap: 4px;
  width: 20px;
}

.nav-toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: currentColor;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.site-header[data-open] .nav-toggle-bar:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

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

.site-header[data-open] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Footer */
.site-footer {
  margin-top: 96px;
  border-top: 1px solid var(--line);
  background: var(--pitch);
  color: var(--text);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(280px, 1.4fr) 2fr;
  gap: 48px;
  padding: 64px 0 40px;
}

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

.footer-brand-line {
  display: inline-block;
  color: var(--text);
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.footer-brand-line:hover {
  color: var(--amber);
}

.footer-brand-note {
  max-width: 38ch;
  margin: 14px 0 22px;
  color: var(--muted);
  font-size: var(--step-13);
  line-height: 1.7;
}

.footer-contact {
  display: grid;
  gap: 6px;
}

.footer-contact-item {
  margin: 0;
  color: var(--muted);
  font-size: var(--step-13);
  line-height: 1.6;
}

.footer-contact-item .mono {
  color: var(--text);
}

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

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

.footer-col-title {
  margin: 0 0 14px;
  color: var(--amber);
  font-family: var(--font-sans);
  font-size: var(--step-11);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-links {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-link {
  border-bottom: 1px solid transparent;
  color: var(--text);
  font-size: var(--step-13);
}

.footer-link:hover,
.footer-link:focus-visible {
  border-bottom-color: var(--cyan);
  color: var(--cyan);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 0 40px;
  border-top: 1px solid rgba(29, 62, 92, 0.8);
  color: var(--muted);
  font-size: var(--step-13);
}

.footer-legal-line,
.footer-icp {
  margin: 0;
}

.footer-icp {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

/* Shared layout */
.section {
  padding: 72px 0;
}

.section-head {
  display: grid;
  gap: 12px;
  max-width: 72ch;
  margin-bottom: 32px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: var(--step-13);
  letter-spacing: 0.12em;
  color: var(--green);
  text-transform: uppercase;
}

.section-title {
  font-size: clamp(28px, 4vw, 48px);
}

.lede {
  max-width: 68ch;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.9;
}

.grid {
  display: grid;
  gap: 24px;
}

.grid-12 {
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.col-span-3 { grid-column: span 3; }
.col-span-4 { grid-column: span 4; }
.col-span-5 { grid-column: span 5; }
.col-span-6 { grid-column: span 6; }
.col-span-7 { grid-column: span 7; }
.col-span-8 { grid-column: span 8; }
.col-span-9 { grid-column: span 9; }
.col-span-12 { grid-column: span 12; }

/* Buttons and labels */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  color: var(--text);
  font-size: var(--step-13);
  font-weight: 700;
  letter-spacing: 0.02em;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.btn:hover,
.btn:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

.btn-primary {
  border-color: var(--green);
  background: var(--green);
  color: var(--ink-950);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  border-color: var(--cyan);
  background: var(--cyan);
  color: var(--ink-950);
}

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

.btn-ghost:hover,
.btn-ghost:focus-visible {
  border-color: var(--amber);
  color: var(--amber);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  background: rgba(12, 33, 54, 0.8);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--step-11);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tag-amber {
  border-color: rgba(255, 176, 32, 0.5);
  color: var(--amber);
}

.tag-green {
  border-color: rgba(23, 185, 120, 0.5);
  color: var(--green);
}

.tag-cyan {
  border-color: rgba(56, 217, 240, 0.5);
  color: var(--cyan);
}

/* Data surfaces */
.paper-card {
  position: relative;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink-950);
  padding: 20px;
  box-shadow: 6px 6px 0 rgba(10, 43, 34, 0.6);
}

.paper-card a {
  color: var(--ink-950);
}

.data-panel {
  border: 1px solid var(--line);
  background: var(--ink-800);
  padding: 20px;
}

.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

.stat {
  display: grid;
  gap: 4px;
  padding: 16px;
  border-left: 2px solid var(--green);
  background: rgba(12, 33, 54, 0.6);
}

.stat-value {
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 29px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  color: var(--muted);
  font-size: var(--step-11);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--step-13);
  line-height: 1.45;
}

.data-table th,
.data-table td {
  padding: 11px 12px;
  border-bottom: 1px solid rgba(29, 62, 92, 0.75);
  text-align: left;
  vertical-align: top;
}

.data-table th {
  background: rgba(6, 20, 38, 0.68);
  color: var(--muted);
  font-size: var(--step-11);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.data-table td.numeric {
  text-align: right;
}

.data-table tbody tr:hover {
  background: rgba(23, 185, 120, 0.08);
}

.score-strip {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

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

.score-value {
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.score-label {
  color: var(--muted);
  font-size: var(--step-11);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.track,
.round-track {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0;
  height: 56px;
  overflow-x: auto;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(23, 185, 120, 0.12), transparent 60%);
  scrollbar-width: thin;
}

.round-node {
  min-width: 84px;
  padding: 8px 12px;
  border-right: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: var(--step-13);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.round-node[data-state="live"] {
  color: var(--live);
}

/* Breadcrumbs */
.breadcrumbs {
  padding: 20px 0 0;
}

.breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: var(--step-13);
}

.breadcrumbs-item + .breadcrumbs-item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.breadcrumbs-link {
  color: var(--muted);
}

.breadcrumbs-link:hover,
.breadcrumbs-link:focus-visible {
  color: var(--cyan);
}

.breadcrumbs-link[aria-current="page"] {
  color: var(--text);
}

/* Accordion */
.accordion {
  border-top: 1px solid var(--line);
}

.accordion-item {
  border-bottom: 1px solid var(--line);
}

.accordion-trigger {
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  border: 0;
  background: none;
  color: var(--text);
  font-size: var(--step-17);
  text-align: left;
  transition: color 0.18s ease, border-color 0.18s ease, padding 0.18s ease;
}

.accordion-trigger::after {
  content: "+";
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
}

.accordion-trigger:hover,
.accordion-trigger:focus-visible {
  color: var(--amber);
}

.accordion-item[data-open] .accordion-trigger {
  border-left: 3px solid var(--amber);
  padding-left: 14px;
}

.accordion-item[data-open] .accordion-trigger::after {
  content: "−";
  color: var(--amber);
}

.accordion-panel {
  padding: 0 0 18px;
  color: var(--muted);
  font-size: var(--step-15);
  line-height: 1.8;
}

/* Tabs / caliber switch */
.caliber-switch {
  display: inline-flex;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.caliber-tab {
  padding: 10px 14px;
  border: 0;
  border-right: 1px solid var(--line);
  background: transparent;
  color: var(--muted);
  font-size: var(--step-13);
  letter-spacing: 0.04em;
  transition: background 0.18s ease, color 0.18s ease;
}

.caliber-tab:last-child {
  border-right: 0;
}

.caliber-tab:hover,
.caliber-tab:focus-visible {
  color: var(--cyan);
}

.caliber-tab[aria-selected="true"],
.caliber-tab.is-active {
  background: var(--green);
  color: var(--ink-950);
  font-weight: 700;
}

.caliber-panel[hidden] {
  display: none !important;
}

/* Media containers */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-800);
  aspect-ratio: 16 / 10;
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

.media-overlay {
  position: absolute;
  inset: auto 0 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 14px 16px;
  background: linear-gradient(to top, rgba(6, 20, 38, 0.92), transparent);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--step-11);
  letter-spacing: 0.04em;
}

.media-caption {
  padding: 10px 0;
  color: var(--muted);
  font-size: var(--step-13);
}

.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.media-tile {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-800);
  aspect-ratio: 4 / 3;
}

.media-tile img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Motion and state */
[data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.24s ease, transform 0.24s ease;
}

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

@media (max-width: 1024px) {
  :root {
    --header-h: 68px;
  }

  .header-inner {
    grid-template-columns: 1fr auto;
    gap: 12px;
  }

  .brand-descriptor {
    white-space: normal;
  }

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

  .site-nav {
    display: none;
    grid-column: 1 / -1;
    width: 100%;
    justify-self: stretch;
    border-top: 1px solid var(--line);
  }

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

  .nav-list {
    flex-direction: column;
    border-left: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    background: var(--ink-900);
  }

  .nav-link {
    padding: 14px 16px;
    border-right: 0;
    border-bottom: 1px solid rgba(29, 62, 92, 0.7);
  }

  .nav-item:last-child .nav-link {
    border-bottom: 0;
  }

  .header-utility {
    gap: 10px;
  }

  .utility-label,
  .utility-link {
    display: none;
  }

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

  .footer-columns {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .container {
    width: calc(100% - 28px);
  }

  body {
    font-size: 16px;
  }

  .section {
    padding: 48px 0;
  }

  .grid-12 {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .col-span-3,
  .col-span-4,
  .col-span-5,
  .col-span-6 {
    grid-column: span 6;
  }

  .col-span-7,
  .col-span-8,
  .col-span-9,
  .col-span-12 {
    grid-column: span 6;
  }

  .footer-columns {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .score-strip {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .brand-mark {
    width: 38px;
    height: 38px;
    font-size: 19px;
  }

  .brand-line {
    font-size: 17px;
  }

  .brand-descriptor {
    font-size: 10px;
  }

  .header-cta {
    padding: 9px 12px;
  }

  .footer-columns {
    grid-template-columns: 1fr;
  }

  .footer-legal {
    display: grid;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

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