:root {
  --bg: #07090f;
  --bg-soft: rgba(13, 17, 29, 0.82);
  --surface: rgba(14, 18, 30, 0.74);
  --surface-strong: rgba(21, 27, 43, 0.92);
  --surface-border: rgba(255, 255, 255, 0.1);
  --surface-highlight: rgba(217, 15, 241, 0.28);
  --text: #f5f7ff;
  --text-soft: rgba(231, 236, 255, 0.72);
  --text-muted: rgba(231, 236, 255, 0.48);
  --brand: #d90ff1;
  --brand-light: #ff67f7;
  --accent: #18f2a3;
  --accent-soft: rgba(24, 242, 163, 0.18);
  --gold: #ffd36a;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --shadow-soft: 0 16px 40px rgba(0, 0, 0, 0.28);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 14px;
  --container: min(1200px, calc(100vw - 48px));
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(217, 15, 241, 0.18), transparent 32%),
    radial-gradient(circle at 82% 18%, rgba(24, 242, 163, 0.12), transparent 22%),
    linear-gradient(180deg, #090b13 0%, #06070c 100%);
  min-height: 100vh;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 80px 80px;
  opacity: 0.14;
  pointer-events: none;
  mask-image: radial-gradient(circle at center, black 48%, transparent 88%);
}

.page-glow,
.page-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
}

.page-glow-a {
  background: radial-gradient(circle at 15% 12%, rgba(217, 15, 241, 0.22), transparent 28%);
}

.page-glow-b {
  background: radial-gradient(circle at 84% 76%, rgba(24, 242, 163, 0.12), transparent 26%);
}

.page-grid {
  background: linear-gradient(180deg, transparent 0%, rgba(255, 255, 255, 0.02) 100%);
  opacity: 0.65;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  width: var(--container);
  margin: 20px auto 0;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(8, 10, 18, 0.72);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-soft);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-mark {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 52%, rgba(24, 242, 163, 0.95) 100%);
  box-shadow: 0 0 30px rgba(217, 15, 241, 0.35);
  overflow: hidden;
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  border-radius: 999px;
}

.brand-mark::before {
  inset: 8px;
  border: 2px solid rgba(255, 255, 255, 0.68);
}

.brand-mark::after {
  width: 10px;
  height: 10px;
  right: 8px;
  top: 8px;
  background: white;
  box-shadow: -14px 14px 0 rgba(255, 255, 255, 0.4);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand-text strong {
  font-size: 1rem;
  letter-spacing: 0.04em;
}

.brand-text em {
  color: var(--text-soft);
  font-style: normal;
  font-size: 0.76rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-nav {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.site-nav a {
  position: relative;
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--text-soft);
  transition: color 0.3s ease, background 0.3s ease;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 7px;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left center;
  background: linear-gradient(90deg, var(--brand), var(--accent));
  transition: transform 0.3s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--text);
  background: rgba(255, 255, 255, 0.05);
}

.site-nav a:hover::after,
.site-nav a:focus-visible::after {
  transform: scaleX(1);
}

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
}

.nav-toggle span {
  width: 18px;
  height: 2px;
  border-radius: 999px;
  background: white;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

body.nav-open .nav-toggle span:first-child {
  transform: translateY(4px) rotate(45deg);
}

body.nav-open .nav-toggle span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.section {
  width: var(--container);
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 110px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 44px;
  align-items: center;
  padding: 52px 0 68px;
}

.hero-copy,
.hero-visual,
.section-heading,
.info-card,
.portal-shell,
.feature-card,
.journey-step,
.cta-card {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.hero-copy.is-visible,
.hero-visual.is-visible,
.section-heading.is-visible,
.info-card.is-visible,
.portal-shell.is-visible,
.feature-card.is-visible,
.journey-step.is-visible,
.cta-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.eyebrow,
.section-tag,
.mini-tag,
.panel-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold);
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

.eyebrow::before,
.section-tag::before,
.mini-tag::before,
.panel-kicker::before {
  content: "";
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, var(--gold), transparent);
}

.hero h1,
.section-heading h2,
.cta-card h2 {
  margin: 18px 0 0;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.04;
}

.hero h1 {
  font-size: clamp(3.4rem, 7vw, 6.2rem);
  max-width: 12ch;
}

.hero-desc,
.section-heading p,
.cta-card p,
.hero-panels p,
.feature-card p,
.info-card p,
.preview-card p,
.ranking-card p,
.feed-card p,
.venue-card p,
.journey-step p {
  color: var(--text-soft);
  line-height: 1.75;
}

.hero-desc {
  max-width: 640px;
  margin: 22px 0 0;
  font-size: 1.02rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
}

.btn-primary {
  color: #07090f;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-light) 48%, var(--accent) 100%);
  box-shadow: 0 18px 40px rgba(217, 15, 241, 0.3);
}

.btn-secondary {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.metric-card,
.glass-panel,
.info-card,
.preview-card,
.ranking-card,
.feed-card,
.venue-card,
.feature-card,
.journey-step,
.cta-card {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.09);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  backdrop-filter: blur(24px);
  box-shadow: var(--shadow-soft);
}

.metric-card {
  padding: 18px 20px;
  border-radius: var(--radius-md);
}

.metric-card strong {
  display: block;
  font-size: clamp(1.9rem, 4vw, 2.8rem);
  line-height: 1;
}

.metric-card span {
  display: block;
  margin-top: 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.metric-card::after,
.glass-panel::after,
.info-card::after,
.preview-card::after,
.ranking-card::after,
.feed-card::after,
.venue-card::after,
.feature-card::after,
.journey-step::after,
.cta-card::after {
  content: "";
  position: absolute;
  inset: auto auto -60px -20px;
  width: 120px;
  height: 120px;
  background: radial-gradient(circle, rgba(217, 15, 241, 0.2), transparent 70%);
  pointer-events: none;
}

.hero-visual {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.arena-frame {
  position: relative;
  min-height: 520px;
  border-radius: 38px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background:
    radial-gradient(circle at center, rgba(217, 15, 241, 0.18), transparent 36%),
    radial-gradient(circle at 50% 50%, rgba(24, 242, 163, 0.06), transparent 42%),
    linear-gradient(180deg, rgba(12, 16, 28, 0.95), rgba(7, 9, 15, 0.98));
  overflow: hidden;
  box-shadow: var(--shadow);
}

.arena-frame::before,
.arena-frame::after {
  content: "";
  position: absolute;
  inset: 0;
}

.arena-frame::before {
  background:
    linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 42px 42px;
  opacity: 0.35;
}

.arena-frame::after {
  background: linear-gradient(140deg, transparent 24%, rgba(255, 255, 255, 0.06) 24.5%, transparent 25%, transparent 54%, rgba(255, 255, 255, 0.04) 54.5%, transparent 55%);
}

.arena-ring {
  position: absolute;
  inset: 50%;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.12);
  transform: translate(-50%, -50%);
}

.ring-one {
  width: 68%;
  height: 68%;
  animation: slow-spin 24s linear infinite;
}

.ring-two {
  width: 48%;
  height: 48%;
  border-style: dashed;
  border-color: rgba(24, 242, 163, 0.38);
  animation: slow-spin-reverse 18s linear infinite;
}

.ring-three {
  width: 84%;
  height: 84%;
  border-color: rgba(217, 15, 241, 0.28);
  animation: pulse-ring 6s ease-in-out infinite;
}

.arena-core {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 240px;
  height: 240px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: radial-gradient(circle at center, rgba(217, 15, 241, 0.34), rgba(8, 10, 18, 0.88) 72%);
  box-shadow: 0 0 80px rgba(217, 15, 241, 0.18);
}

.core-copy {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: min(78%, 210px);
  text-align: center;
}

.core-copy small {
  display: block;
  color: var(--accent);
  letter-spacing: 0.24em;
  font-size: 0.72rem;
}

.core-copy strong {
  display: block;
  margin-top: 12px;
  font-size: 2rem;
  letter-spacing: 0.08em;
}

.core-copy p {
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 0.92rem;
  line-height: 1.6;
}

.signal {
  position: absolute;
  inset: 50% auto auto 50%;
  width: 12px;
  height: 12px;
  margin: -6px 0 0 -6px;
  border-radius: 50%;
  background: white;
  box-shadow: 0 0 14px rgba(255, 255, 255, 0.6);
}

.signal-a {
  transform: translateY(-112px);
}

.signal-b {
  transform: translate(92px, 56px);
}

.signal-c {
  transform: translate(-98px, 50px);
}

.signal::before {
  content: "";
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
  animation: beacon 2.8s ease-out infinite;
}

.floating-tag {
  position: absolute;
  padding: 9px 16px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(11, 14, 24, 0.88);
  color: var(--text-soft);
  font-size: 0.86rem;
  box-shadow: var(--shadow-soft);
}

.floating-tag-a {
  top: 18%;
  left: 10%;
}

.floating-tag-b {
  top: 20%;
  right: 9%;
}

.floating-tag-c {
  bottom: 18%;
  left: 12%;
}

.floating-tag-d {
  bottom: 12%;
  right: 12%;
}

.hero-panels {
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 18px;
}

.glass-panel {
  padding: 22px;
  border-radius: var(--radius-lg);
}

.panel-large h3,
.preview-card h3,
.venue-card h3,
.section-heading h2,
.cta-card h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
}

.panel-large h3,
.panel-small strong,
.info-card h3,
.preview-card h4,
.ranking-card strong,
.feed-card strong,
.feature-card h3,
.journey-step h3 {
  margin: 14px 0 0;
}

.panel-small {
  display: flex;
  align-items: center;
  gap: 14px;
}

.status-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 18px rgba(24, 242, 163, 0.7);
  flex: none;
}

.section-heading {
  max-width: 760px;
  padding-top: 44px;
}

.section-heading h2 {
  max-width: 12ch;
}

.section-heading p {
  margin-top: 16px;
}

.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}

.info-card {
  padding: 22px;
  border-radius: var(--radius-lg);
  min-height: 238px;
}

.info-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 700;
}

.portal {
  padding-top: 26px;
}

.portal-shell {
  margin-top: 34px;
  padding: 24px;
  border-radius: 34px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.025));
  box-shadow: var(--shadow);
}

.portal-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.portal-tab {
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-soft);
  cursor: pointer;
  transition: all 0.3s ease;
}

.portal-tab.is-active {
  color: #07090f;
  border-color: transparent;
  background: linear-gradient(135deg, var(--brand), var(--brand-light), var(--accent));
  box-shadow: 0 14px 30px rgba(217, 15, 241, 0.25);
}

.portal-panels {
  position: relative;
  margin-top: 24px;
}

.portal-panel {
  display: none;
}

.portal-panel.is-active {
  display: block;
}

.preview-grid,
.ranking-board,
.feed-preview,
.venue-preview,
.feature-grid,
.journey-line {
  display: grid;
  gap: 18px;
}

.preview-grid {
  grid-template-columns: 1.15fr 0.85fr 0.85fr;
}

.preview-card,
.ranking-card,
.feed-card,
.venue-card,
.feature-card,
.journey-step {
  padding: 24px;
  border-radius: 26px;
}

.preview-hero-card {
  min-height: 320px;
  background:
    radial-gradient(circle at top right, rgba(24, 242, 163, 0.14), transparent 30%),
    linear-gradient(180deg, rgba(217, 15, 241, 0.14), rgba(255, 255, 255, 0.04));
}

.mini-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.mini-stats span {
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-soft);
  font-size: 0.9rem;
}

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

.ranking-card span,
.journey-step span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 14px;
  font-weight: 800;
  background: rgba(255, 255, 255, 0.07);
}

.top-card {
  background:
    radial-gradient(circle at top right, rgba(217, 15, 241, 0.18), transparent 34%),
    linear-gradient(180deg, rgba(255, 211, 106, 0.12), rgba(255, 255, 255, 0.05));
}

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

.feed-card.official {
  border-color: rgba(24, 242, 163, 0.26);
  box-shadow: 0 16px 36px rgba(24, 242, 163, 0.08);
}

.feed-head {
  display: flex;
  gap: 14px;
  align-items: center;
}

.feed-head p {
  margin: 6px 0 0;
  color: var(--text-muted);
  line-height: 1.5;
}

.feed-avatar {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  box-shadow: 0 10px 24px rgba(217, 15, 241, 0.25);
}

.feed-avatar.alt {
  background: linear-gradient(135deg, rgba(24, 242, 163, 0.9), rgba(73, 149, 255, 0.9));
  box-shadow: 0 10px 24px rgba(73, 149, 255, 0.2);
}

.venue-preview {
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
}

.venue-card.large {
  min-height: 290px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.03)),
    linear-gradient(135deg, rgba(24, 242, 163, 0.08), rgba(217, 15, 241, 0.12));
}

.feature-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 34px;
}

.feature-card h3 {
  font-size: 1.22rem;
}

.journey-line {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 34px;
}

.journey-step {
  min-height: 240px;
}

.cta-section {
  padding: 42px 0 84px;
}

.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 34px;
  border-radius: 34px;
  background:
    radial-gradient(circle at left center, rgba(217, 15, 241, 0.16), transparent 34%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.035));
}

.site-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  width: var(--container);
  margin: 0 auto;
  padding: 0 0 36px;
  color: var(--text-muted);
  font-size: 0.92rem;
  text-align: center;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px 0;
  align-items: center;
}

.footer-title,
.footer-subtitle {
  margin: 0;
}

.footer-title {
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.footer-subtitle {
  color: var(--text-muted);
}

.compliance-panel {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: min(100%, 760px);
  padding: 0;
}

.compliance-label {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(255, 211, 106, 0.08);
  color: var(--gold);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
}

.compliance-note {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.84rem;
  line-height: 1.7;
}

.compliance-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.compliance-link {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0;
  border-radius: 0;
  border: 0;
  background: transparent;
  color: var(--text-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.3s ease;
}

.compliance-link:hover,
.compliance-link:focus-visible {
  color: var(--text);
}

.compliance-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 18px;
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.8;
}

@keyframes slow-spin {
  from {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

@keyframes slow-spin-reverse {
  from {
    transform: translate(-50%, -50%) rotate(360deg);
  }
  to {
    transform: translate(-50%, -50%) rotate(0deg);
  }
}

@keyframes pulse-ring {
  0%,
  100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.55;
  }
  50% {
    transform: translate(-50%, -50%) scale(1.03);
    opacity: 0.9;
  }
}

@keyframes beacon {
  0% {
    transform: scale(0.5);
    opacity: 0.72;
  }
  100% {
    transform: scale(1.8);
    opacity: 0;
  }
}

@media (max-width: 1180px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero h1 {
    max-width: 14ch;
  }

  .ecosystem-grid,
  .feature-grid,
  .journey-line {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .preview-grid,
  .ranking-board,
  .venue-preview {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 900px) {
  :root {
    --container: min(100vw - 28px, 1000px);
  }

  .site-header {
    margin-top: 12px;
    border-radius: 26px;
  }

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

  .site-nav {
    position: fixed;
    left: 14px;
    right: 14px;
    top: 78px;
    display: grid;
    gap: 8px;
    padding: 14px;
    border-radius: 26px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(8, 10, 18, 0.96);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow);
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }

  body.nav-open .site-nav {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }

  .site-nav a {
    padding: 14px 16px;
    border-radius: 18px;
  }

  .hero {
    min-height: auto;
    padding-top: 34px;
  }

  .hero h1 {
    font-size: clamp(2.7rem, 10vw, 4.4rem);
  }

  .hero-metrics,
  .feed-preview,
  .cta-card {
    grid-template-columns: 1fr;
  }

  .hero-panels {
    grid-template-columns: 1fr;
  }

  .arena-frame {
    min-height: 430px;
  }

  .arena-core {
    width: 200px;
    height: 200px;
  }

  .ecosystem-grid,
  .feature-grid,
  .journey-line {
    grid-template-columns: 1fr;
  }

  .cta-card {
    align-items: flex-start;
  }

  .site-footer {
    gap: 16px;
  }

  .compliance-panel {
    width: 100%;
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 12px 14px;
  }

  .brand-text strong {
    font-size: 0.92rem;
  }

  .brand-text em {
    font-size: 0.68rem;
  }

  .section-heading {
    padding-top: 24px;
  }

  .portal-shell,
  .cta-card,
  .preview-card,
  .ranking-card,
  .feed-card,
  .venue-card,
  .feature-card,
  .journey-step,
  .glass-panel {
    border-radius: 22px;
  }

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

  .portal-tab {
    width: 100%;
  }

  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .floating-tag {
    display: none;
  }

  .compliance-links,
  .compliance-meta {
    flex-direction: column;
    align-items: center;
  }

  .compliance-link {
    min-height: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }

  .hero-copy,
  .hero-visual,
  .section-heading,
  .info-card,
  .portal-shell,
  .feature-card,
  .journey-step,
  .cta-card {
    opacity: 1;
    transform: none;
  }
}