:root {
  --usdc: #2775ca;
  --usdc-bright: #3b8fe8;
  --usdc-deep: #1b4f96;
  --navy: #0e2240;
  --navy-soft: #1a365d;
  --paper: #f6f1e6;
  --paper-deep: #ebe3d2;
  --cream: #fbf8f1;
  --white: #ffffff;
  --ink: #142033;
  --ink-soft: #3a4a63;
  --red: #b31942;
  --red-soft: #c94c5c;
  --eye: #2f8a4b;
  --line: rgba(14, 34, 64, 0.14);
  --header-h: 76px;
  --serif: "Fraunces", "Iowan Old Style", Palatino, Georgia, serif;
  --sans: "DM Sans", "Segoe UI", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Consolas, monospace;
  --shadow: 0 18px 50px rgba(14, 34, 64, 0.12);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-optical-sizing: auto;
  line-height: 1.5;
  overflow-x: hidden;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

h1,
h2,
h3,
blockquote {
  margin: 0;
}

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

.skip-link {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 80;
  background: var(--navy);
  color: var(--white);
  padding: 8px 12px;
}

.skip-link:focus {
  top: 12px;
}

::selection {
  background: rgba(39, 117, 202, 0.22);
}

/* Flag ribbon — thin civic motif, not costume */
.flag-ribbon {
  display: flex;
  height: 6px;
  position: sticky;
  top: 0;
  z-index: 40;
}

.flag-ribbon__canton {
  width: 28%;
  min-width: 88px;
  background:
    radial-gradient(circle at 20% 50%, #fff 1.1px, transparent 1.3px),
    radial-gradient(circle at 50% 50%, #fff 1.1px, transparent 1.3px),
    radial-gradient(circle at 80% 50%, #fff 1.1px, transparent 1.3px),
    var(--navy);
  background-size: 28px 6px, 28px 6px, 28px 6px, auto;
}

.flag-ribbon__stripes {
  flex: 1;
  background: repeating-linear-gradient(
    180deg,
    var(--red) 0 2px,
    var(--white) 2px 4px,
    var(--red) 4px 6px
  );
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease, color 0.2s ease;
}

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

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn-sm {
  height: 38px;
  padding: 0 16px;
  font-size: 13px;
}

.btn-lg {
  height: 52px;
  padding: 0 26px;
  font-size: 15px;
}

.btn-primary {
  background: var(--usdc);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(39, 117, 202, 0.28);
}

.btn-primary:hover {
  background: var(--usdc-deep);
}

.btn-navy {
  background: var(--navy);
  color: var(--white);
}

.btn-navy:hover {
  background: #08162c;
}

.btn-outline {
  background: transparent;
  color: var(--navy);
  border-color: rgba(14, 34, 64, 0.28);
}

.btn-outline:hover {
  border-color: var(--navy);
  background: rgba(14, 34, 64, 0.04);
}

.btn-ghost {
  background: transparent;
  color: var(--navy);
  border-color: rgba(14, 34, 64, 0.18);
}

.btn-icon {
  width: 38px;
  padding: 0;
}

.btn-lg.btn-icon {
  width: 52px;
}

.btn-copy {
  height: 44px;
  padding: 0 18px;
  background: var(--white);
  color: var(--navy);
  border: 1px solid rgba(255, 255, 255, 0.35);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.btn-copy.is-copied {
  background: var(--eye);
  color: var(--white);
  border-color: var(--eye);
}

/* Header */
.site-header {
  position: sticky;
  top: 6px;
  z-index: 30;
  background: rgba(246, 241, 230, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: 1240px;
  margin: 0 auto;
  min-height: var(--header-h);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  gap: 28px;
}

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

.brand img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(39, 117, 202, 0.25);
}

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

.brand-name {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.brand-ticker {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--usdc);
  letter-spacing: 0.12em;
}

.brand-chain {
  font-size: 11px;
  color: var(--ink-soft);
}

.nav-desktop {
  display: flex;
  gap: 26px;
  margin-left: auto;
  font-size: 14px;
  font-weight: 500;
}

.nav-desktop a {
  position: relative;
  color: var(--ink-soft);
  padding: 8px 0;
}

.nav-desktop a:hover,
.nav-desktop a.is-active {
  color: var(--navy);
}

.nav-desktop a.is-active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--usdc);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--white);
  padding: 11px 10px;
  flex-direction: column;
  justify-content: space-between;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--navy);
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle.is-open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle.is-open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.is-open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-menu {
  display: none;
  padding: 8px 24px 22px;
  background: var(--cream);
  border-bottom: 1px solid var(--line);
}

.mobile-menu nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu a {
  display: block;
  padding: 14px 4px;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
}

.mobile-menu:not([hidden]) {
  display: block;
}

/* Hero */
.hero {
  position: relative;
  min-height: calc(100vh - 82px);
  overflow: hidden;
  background:
    linear-gradient(180deg, var(--cream) 0%, var(--paper) 48%, #e7eef8 100%);
}

.hero-texture {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.55;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent 0 7px,
      rgba(14, 34, 64, 0.035) 7px 8px
    ),
    repeating-linear-gradient(
      90deg,
      transparent 0 11px,
      rgba(39, 117, 202, 0.03) 11px 12px
    );
  animation: security-drift 48s linear infinite;
}

.hero-canton {
  position: absolute;
  top: 0;
  left: 0;
  width: min(42vw, 520px);
  height: 42%;
  background: linear-gradient(160deg, rgba(14, 34, 64, 0.08), transparent 70%);
  pointer-events: none;
}

.hero-canton .star {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--navy);
  opacity: 0.18;
  clip-path: polygon(50% 0%, 61% 35%, 98% 35%, 68% 57%, 79% 91%, 50% 70%, 21% 91%, 32% 57%, 2% 35%, 39% 35%);
}

.hero-canton .star:nth-child(1) { top: 12%; left: 10%; }
.hero-canton .star:nth-child(2) { top: 18%; left: 28%; width: 7px; height: 7px; }
.hero-canton .star:nth-child(3) { top: 8%; left: 46%; }
.hero-canton .star:nth-child(4) { top: 28%; left: 16%; width: 8px; height: 8px; }
.hero-canton .star:nth-child(5) { top: 34%; left: 38%; }
.hero-canton .star:nth-child(6) { top: 22%; left: 58%; width: 6px; height: 6px; }
.hero-canton .star:nth-child(7) { top: 42%; left: 8%; }
.hero-canton .star:nth-child(8) { top: 48%; left: 30%; width: 7px; height: 7px; }
.hero-canton .star:nth-child(9) { top: 40%; left: 52%; }

.hero-stripes {
  position: absolute;
  right: 0;
  top: 0;
  width: 38%;
  height: 100%;
  pointer-events: none;
  opacity: 0.22;
  background: repeating-linear-gradient(
    180deg,
    rgba(179, 25, 66, 0.16) 0 14px,
    transparent 14px 32px,
    rgba(255, 255, 255, 0.4) 32px 46px,
    transparent 46px 64px
  );
  mask-image: linear-gradient(90deg, transparent, #000 55%);
}

.hero-seal {
  position: absolute;
  right: 8%;
  top: 50%;
  width: min(52vw, 640px);
  height: min(52vw, 640px);
  transform: translateY(-50%);
  border-radius: 50%;
  pointer-events: none;
  background:
    repeating-radial-gradient(circle at 50% 50%, transparent 0 14px, rgba(39, 117, 202, 0.08) 14px 15px),
    repeating-conic-gradient(from 0deg, rgba(39, 117, 202, 0.06) 0 3deg, transparent 3deg 10deg);
  box-shadow: inset 0 0 0 1px rgba(39, 117, 202, 0.18);
}

.paw {
  position: absolute;
  width: 34px;
  height: 34px;
  opacity: 0.16;
  background:
    radial-gradient(circle at 50% 62%, var(--navy) 38%, transparent 39%),
    radial-gradient(circle at 22% 32%, var(--navy) 16%, transparent 17%),
    radial-gradient(circle at 50% 18%, var(--navy) 16%, transparent 17%),
    radial-gradient(circle at 78% 32%, var(--navy) 16%, transparent 17%),
    radial-gradient(circle at 32% 8%, var(--navy) 11%, transparent 12%);
  pointer-events: none;
}

.paw-a { top: 22%; left: 46%; transform: rotate(-18deg); }
.paw-b { bottom: 18%; left: 18%; transform: rotate(22deg); }

.hero-grid {
  position: relative;
  z-index: 1;
  max-width: 1240px;
  margin: 0 auto;
  padding: 48px 24px 64px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 12px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--usdc-deep);
}

.title-small {
  display: block;
  font-family: var(--sans);
  font-size: clamp(1.1rem, 2vw, 1.6rem);
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--navy);
}

.title-large {
  display: block;
  margin-top: 4px;
  font-family: var(--serif);
  font-size: clamp(4.2rem, 9vw, 8.2rem);
  font-weight: 600;
  font-optical-sizing: auto;
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: var(--usdc);
}

.hero-ticker {
  display: inline-block;
  margin: 22px 0 0;
  padding: 6px 14px;
  border: 1px solid rgba(39, 117, 202, 0.35);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--navy);
  background: rgba(255, 255, 255, 0.55);
}

.hero-tagline {
  margin: 22px 0 0;
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-style: italic;
  font-weight: 500;
  line-height: 1.2;
}

.hero-support {
  max-width: 34ch;
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 1.05rem;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-art {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: flex-end;
  min-height: 520px;
}

.hero-medallion {
  position: absolute;
  width: min(88%, 520px);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, rgba(39, 117, 202, 0.16), transparent 64%),
    repeating-radial-gradient(circle, transparent 0 18px, rgba(179, 25, 66, 0.08) 18px 19px);
  box-shadow:
    0 0 0 1px rgba(39, 117, 202, 0.2),
    0 0 0 14px rgba(255, 255, 255, 0.35);
}

.hero-mascot {
  position: relative;
  z-index: 1;
  width: min(100%, 560px);
  max-height: 78vh;
  object-fit: contain;
  filter: drop-shadow(0 24px 30px rgba(14, 34, 64, 0.18));
  animation: mascot-float 6.5s ease-in-out infinite;
  transform-origin: 50% 80%;
}

.hero-art:hover .hero-mascot {
  animation-play-state: paused;
  transform: translateY(-6px) rotate(-1.2deg);
}

@keyframes mascot-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

@keyframes security-drift {
  from { background-position: 0 0, 0 0; }
  to { background-position: 0 80px, 80px 0; }
}

/* Contract strip */
.contract-strip {
  background: var(--navy);
  color: var(--white);
  position: relative;
}

.contract-strip::before {
  content: "UNITED STATES DOLLAR CAT  $USDC  ARC CHAIN  UNITED STATES DOLLAR CAT  $USDC  ARC CHAIN  UNITED STATES DOLLAR CAT  $USDC  ARC CHAIN  ";
  position: absolute;
  inset: 8px 0 auto;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.28em;
  color: rgba(255, 255, 255, 0.22);
  white-space: nowrap;
  overflow: hidden;
}

.contract-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 28px 24px 26px;
}

.contract-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.contract-kicker {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
}

.prelaunch-badge {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 999px;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #f3d27a;
}

.contract-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.contract-value {
  font-family: var(--mono);
  font-size: clamp(1.4rem, 4vw, 2.2rem);
  font-weight: 500;
  letter-spacing: 0.08em;
  overflow-wrap: anywhere;
  background: rgba(255, 255, 255, 0.06);
  border: 1px dashed rgba(255, 255, 255, 0.22);
  padding: 10px 16px;
  border-radius: 8px;
  flex: 1;
  min-width: 0;
}

.contract-note {
  margin: 12px 0 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
}

/* About */
.about {
  padding: 96px 24px;
  background:
    linear-gradient(180deg, var(--cream), var(--paper));
}

.section-frame {
  max-width: 860px;
  margin: 0 auto;
  border: 1px solid var(--line);
  box-shadow:
    inset 0 0 0 8px rgba(255, 255, 255, 0.7),
    inset 0 0 0 9px var(--line);
  padding: 56px 48px;
  background:
    repeating-linear-gradient(
      0deg,
      transparent 0 31px,
      rgba(39, 117, 202, 0.04) 31px 32px
    ),
    var(--cream);
  position: relative;
}

.section-frame::after {
  content: "";
  position: absolute;
  width: 22px;
  height: 22px;
  right: 22px;
  bottom: 22px;
  opacity: 0.25;
  background:
    radial-gradient(circle at 50% 62%, var(--navy) 38%, transparent 39%),
    radial-gradient(circle at 22% 32%, var(--navy) 16%, transparent 17%),
    radial-gradient(circle at 50% 18%, var(--navy) 16%, transparent 17%),
    radial-gradient(circle at 78% 32%, var(--navy) 16%, transparent 17%);
}

.section-index {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--red);
}

.about h2 {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 4.4rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.story {
  margin: 36px 0 0;
  font-family: var(--serif);
  font-size: clamp(1.5rem, 3.2vw, 2.15rem);
  font-style: italic;
  font-weight: 500;
  line-height: 1.35;
  color: var(--navy);
}

.story p + p {
  margin-top: 1.1em;
}

.about-body {
  margin: 36px 0 0;
  max-width: 58ch;
  font-size: 1.12rem;
  color: var(--ink-soft);
}

.disclaimer {
  margin: 32px 0 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

/* Exhibit */
.exhibit {
  padding: 48px 24px 96px;
  background: var(--navy);
  color: var(--white);
  position: relative;
}

.exhibit::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0 40px,
      rgba(255, 255, 255, 0.03) 40px 41px
    );
  pointer-events: none;
}

.exhibit-fragments {
  max-width: 1240px;
  margin: 0 auto 28px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  position: relative;
}

.fragment {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: #f3d27a;
}

.exhibit-frame {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  padding: 14px;
  background: linear-gradient(180deg, #1d3c6e, #12284b);
  box-shadow: var(--shadow);
}

.exhibit-frame::before,
.exhibit-frame::after {
  content: "";
  position: absolute;
  inset: 6px;
  pointer-events: none;
}

.exhibit-frame::before {
  border: 1px solid rgba(243, 210, 122, 0.45);
}

.exhibit-frame::after {
  inset: 10px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.exhibit-corners {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(var(--red), var(--red)) top left / 28px 2px no-repeat,
    linear-gradient(var(--red), var(--red)) top left / 2px 28px no-repeat,
    linear-gradient(var(--red), var(--red)) top right / 28px 2px no-repeat,
    linear-gradient(var(--red), var(--red)) top right / 2px 28px no-repeat,
    linear-gradient(var(--red), var(--red)) bottom left / 28px 2px no-repeat,
    linear-gradient(var(--red), var(--red)) bottom left / 2px 28px no-repeat,
    linear-gradient(var(--red), var(--red)) bottom right / 28px 2px no-repeat,
    linear-gradient(var(--red), var(--red)) bottom right / 2px 28px no-repeat;
}

.exhibit-frame img {
  width: 100%;
  height: auto;
  display: block;
}

.exhibit-frame figcaption {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
}

.exhibit-line {
  max-width: 1240px;
  margin: 48px auto 0;
  font-family: var(--serif);
  font-size: clamp(2.6rem, 7vw, 6rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  text-align: center;
}

.exhibit-line span {
  display: block;
}

/* Why / banknote plates */
.why {
  padding: 96px 24px;
  background: var(--paper);
}

.why-head {
  max-width: 1240px;
  margin: 0 auto 28px;
}

.why-notes {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: 1240px;
  display: grid;
  gap: 18px;
}

.note-plate {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 28px;
  align-items: center;
  padding: 42px 48px;
  background: var(--cream);
  border: 1px solid var(--line);
  overflow: hidden;
}

.note-plate::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px dashed rgba(39, 117, 202, 0.28);
  pointer-events: none;
}

.note-plate::after {
  content: "";
  position: absolute;
  right: -40px;
  top: -40px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: repeating-radial-gradient(circle, transparent 0 10px, rgba(39, 117, 202, 0.08) 10px 11px);
  pointer-events: none;
}

.note-plate:nth-child(1) { clip-path: inset(0 round 2px 48px 2px 2px); }
.note-plate:nth-child(2) {
  background: linear-gradient(120deg, var(--usdc) 0%, #1f6bb8 100%);
  color: var(--white);
  margin-left: 7%;
}
.note-plate:nth-child(2)::before { border-color: rgba(255, 255, 255, 0.28); }
.note-plate:nth-child(3) {
  margin-right: 7%;
  background: linear-gradient(180deg, #f7f4ee, #efe6d4);
}

.note-num {
  font-family: var(--serif);
  font-size: clamp(3.4rem, 7vw, 6.4rem);
  line-height: 0.8;
  color: var(--usdc);
  letter-spacing: -0.04em;
}

.note-plate:nth-child(2) .note-num {
  color: #f3d27a;
}

.note-body h3 {
  font-family: var(--serif);
  font-size: clamp(2rem, 4vw, 3.2rem);
  text-transform: uppercase;
  letter-spacing: -0.03em;
  line-height: 1;
}

.note-body p {
  margin: 10px 0 0;
  max-width: 28ch;
  font-size: 1.15rem;
}

.note-corner {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  opacity: 0.55;
}

/* Chart */
.chart {
  padding: 96px 24px;
  background:
    linear-gradient(180deg, #eef3f9, var(--cream));
}

.chart-head {
  max-width: 1240px;
  margin: 0 auto 28px;
  text-align: center;
}

.chart-head h2 {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 4.6rem);
  text-transform: uppercase;
  letter-spacing: -0.03em;
}

.chart-sub {
  margin: 8px 0 0;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.3rem;
  color: var(--ink-soft);
}

.chart-stage {
  position: relative;
  max-width: 1240px;
  margin: 0 auto;
  min-height: 420px;
  border: 1px solid var(--line);
  background: var(--white);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.chart-gridlines {
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(180deg, transparent 0 39px, rgba(39, 117, 202, 0.08) 39px 40px),
    repeating-linear-gradient(90deg, transparent 0 79px, rgba(14, 34, 64, 0.06) 79px 80px);
}

.chart-overlay {
  position: relative;
  z-index: 1;
  min-height: 420px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  padding: 40px 24px;
  text-align: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.78), rgba(246, 241, 230, 0.9));
}

.chart-overlay .prelaunch-badge {
  color: var(--red);
  border-color: rgba(179, 25, 66, 0.35);
  background: rgba(179, 25, 66, 0.06);
}

.chart-wait {
  margin: 0;
  max-width: 40ch;
  font-size: 1.05rem;
  color: var(--ink-soft);
}

.chart-url {
  margin: 0;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--usdc-deep);
}

/* Buy / note */
.buy {
  padding: 48px 24px 96px;
  background: var(--paper);
}

.note-sheet {
  position: relative;
  max-width: 980px;
  margin: 0 auto;
  padding: 64px 48px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 50%, rgba(39, 117, 202, 0.08), transparent 55%),
    repeating-radial-gradient(circle at 50% 50%, transparent 0 22px, rgba(39, 117, 202, 0.05) 22px 23px),
    var(--cream);
  border: 2px solid var(--navy);
  box-shadow:
    inset 0 0 0 8px var(--paper),
    inset 0 0 0 9px rgba(179, 25, 66, 0.55),
    var(--shadow);
}

.note-sheet::before,
.note-sheet::after {
  content: "$USDC";
  position: absolute;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--usdc);
}

.note-sheet::before { top: 18px; left: 22px; }
.note-sheet::after { bottom: 18px; right: 22px; }

.note-ornament {
  width: 88px;
  height: 88px;
  margin: 0 auto 18px;
  border-radius: 50%;
  border: 1px solid rgba(39, 117, 202, 0.35);
  background:
    repeating-conic-gradient(from 0deg, rgba(39, 117, 202, 0.18) 0 6deg, transparent 6deg 18deg);
  box-shadow: inset 0 0 0 10px var(--cream), 0 0 0 1px rgba(179, 25, 66, 0.25);
}

.note-series {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

.note-sheet h2 {
  font-family: var(--serif);
  font-size: clamp(2.6rem, 7vw, 5.4rem);
  line-height: 0.92;
  text-transform: uppercase;
  letter-spacing: -0.04em;
}

.note-sheet h2 span {
  display: block;
}

.note-sheet h2 span:nth-child(2) {
  color: var(--usdc);
}

.buy-support {
  margin: 22px 0 28px;
  font-size: 1.1rem;
  color: var(--ink-soft);
}

.buy-status {
  margin: 18px 0 0;
  font-size: 13px;
  color: var(--ink-soft);
}

/* Footer */
.site-footer {
  background: var(--navy);
  color: var(--white);
  padding: 48px 24px 36px;
}

.footer-inner {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  flex-wrap: wrap;
}

.site-footer .brand-name,
.site-footer .brand-ticker,
.site-footer .brand-chain {
  color: var(--white);
}

.site-footer .brand-ticker {
  color: #9ec7f2;
}

.footer-links {
  display: flex;
  gap: 22px;
  font-weight: 600;
}

.footer-links a:hover {
  color: #9ec7f2;
}

.footer-tag {
  max-width: 1240px;
  margin: 28px auto 8px;
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.4rem;
}

.site-footer .disclaimer {
  max-width: 1240px;
  margin: 0 auto;
  color: rgba(255, 255, 255, 0.55);
}

/* Reveals */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

/* Responsive */
@media (max-width: 980px) {
  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    padding-top: 28px;
  }

  .hero-copy {
    display: contents;
  }

  .eyebrow,
  #hero-title,
  .hero-ticker {
    order: 1;
  }

  .hero-art {
    order: 2;
    min-height: 0;
    margin: 8px 0 10px;
  }

  .hero-tagline,
  .hero-support,
  .hero-cta {
    order: 3;
  }

  .hero-mascot {
    max-height: 58vh;
    width: min(100%, 420px);
  }

  .hero-seal {
    width: min(80vw, 460px);
    height: min(80vw, 460px);
    right: 50%;
    transform: translate(50%, -50%);
    top: 22%;
  }

  .hero-stripes {
    width: 100%;
    opacity: 0.12;
  }

  .title-large {
    font-size: clamp(3.4rem, 16vw, 5.6rem);
  }

  .note-plate {
    grid-template-columns: 1fr;
    padding: 32px 24px;
    gap: 8px;
  }

  .note-plate:nth-child(2),
  .note-plate:nth-child(3) {
    margin: 0;
  }

  .note-corner {
    writing-mode: horizontal-tb;
    transform: none;
    justify-self: start;
  }

  .section-frame {
    padding: 36px 22px;
  }
}

@media (max-width: 720px) {
  .header-inner {
    padding: 8px 16px;
    gap: 12px;
  }

  .header-actions .btn-ghost {
    display: none;
  }

  .brand-name {
    font-size: 12px;
    white-space: normal;
    line-height: 1.15;
  }

  .hero,
  .about,
  .why,
  .chart {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero {
    min-height: 0;
  }

  .hero-copy {
    padding-bottom: 36px;
  }

  .hero-cta .btn-lg {
    flex: 1 1 calc(50% - 10px);
  }

  .hero-cta .btn-icon {
    flex: 0 0 52px;
  }

  .contract-inner {
    padding: 24px 16px;
  }

  .contract-value {
    width: 100%;
    flex: 1 1 100%;
  }

  .btn-copy {
    width: 100%;
  }

  .exhibit-fragments {
    flex-direction: column;
    gap: 8px;
  }

  .exhibit-line {
    text-align: left;
  }

  .note-sheet {
    padding: 48px 20px;
  }

  .paw,
  .hero-canton .star:nth-child(n+6) {
    display: none;
  }

  .chart-stage,
  .chart-overlay {
    min-height: 340px;
  }
}

@media (max-width: 420px) {
  .brand img {
    width: 40px;
    height: 40px;
  }

  .title-small {
    letter-spacing: 0.1em;
  }
}

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

  .hero-texture,
  .hero-mascot,
  .reveal {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  .btn:hover,
  .hero-art:hover .hero-mascot {
    transform: none;
  }
}