:root {
  color-scheme: light;
  --bg: #f5f5f4;
  --surface: #ffffff;
  --surface-soft: #fafaf9;
  --border: #e5e7eb;
  --border-strong: #d1d5db;
  --text: #111111;
  --text-soft: #4b5563;
  --text-muted: #6b7280;
  --accent: #111111;
  --accent-soft: #f3f4f6;
  --btc: #f7931a;
  --btc-strong: #cf6f00;
  --btc-soft: #fff1db;
  --btc-border: rgba(247, 147, 26, 0.28);
  --accent-warm: #da6f22;
  --accent-warm-soft: #fde8d8;
  --accent-blue: #1d5fc2;
  --accent-blue-soft: #e4efff;
  --accent-green: #147346;
  --accent-green-soft: #e6f6ec;
  --accent-sand: #9a6b2f;
  --accent-sand-soft: #f8ebd8;
  --success: #166534;
  --success-bg: #f0fdf4;
  --warning: #b45309;
  --warning-bg: #fff7ed;
  --danger: #b91c1c;
  --danger-bg: #fef2f2;
  --shadow: 0 1px 2px rgba(17, 24, 39, 0.06);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 10px;
  --container: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  line-height: 1.5;
}

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

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

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

.shell {
  min-height: 100vh;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding-top: 12px;
  background: linear-gradient(180deg, rgba(245, 245, 244, 0.95) 0%, rgba(245, 245, 244, 0.82) 68%, rgba(245, 245, 244, 0) 100%);
  backdrop-filter: blur(14px);
}

.site-header__inner,
.container {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
}

.site-header__inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  min-height: 68px;
  padding: 10px 14px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.84);
  box-shadow: 0 10px 28px rgba(17, 24, 39, 0.08);
}

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

.brand__mark {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(247, 147, 26, 0.28);
  border-radius: 12px;
  background: linear-gradient(180deg, #ffb04a 0%, var(--btc) 100%);
  color: #ffffff;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  font-weight: 700;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.34), 0 6px 18px rgba(247, 147, 26, 0.18);
}

.brand__eyebrow {
  margin: 0 0 2px;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.brand__title {
  margin: 0;
  font-size: 0.96rem;
  font-weight: 700;
  white-space: nowrap;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-self: center;
  gap: 4px;
  padding: 4px;
  border: 1px solid rgba(17, 24, 39, 0.07);
  border-radius: 999px;
  background: rgba(245, 245, 244, 0.88);
  color: var(--text-soft);
  font-size: 0.9rem;
}

.top-nav a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border-radius: 999px;
  font-weight: 600;
  transition: background 0.18s ease, color 0.18s ease, box-shadow 0.18s ease;
}

.top-nav a:hover,
.top-nav a.is-active {
  background: var(--btc-soft);
  color: var(--btc-strong);
  box-shadow: inset 0 0 0 1px rgba(247, 147, 26, 0.16);
}

.header-actions {
  display: flex;
  align-items: center;
  justify-self: end;
  gap: 10px;
}

.site-header .button {
  min-height: 42px;
  padding: 0 16px;
  border-radius: 999px;
  font-size: 0.9rem;
}

.site-header .button--ghost {
  border-color: transparent;
  background: transparent;
  color: var(--text-soft);
}

.site-header .button--ghost:hover {
  border-color: rgba(17, 24, 39, 0.08);
  background: rgba(255, 255, 255, 0.7);
  color: var(--text);
}

.site-header .button--primary {
  border-color: var(--btc-strong);
  box-shadow: 0 10px 20px rgba(247, 147, 26, 0.18);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease, transform 0.18s ease;
}

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

.button--primary {
  border-color: var(--btc-strong);
  background: linear-gradient(180deg, #ffae44 0%, var(--btc) 100%);
  color: #fff;
}

.button--primary:hover {
  border-color: var(--btc-strong);
}

.button--ghost {
  background: transparent;
}

.button--wide {
  width: 100%;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text-soft);
  font-size: 0.84rem;
  font-weight: 600;
}

.badge--btc {
  border-color: rgba(247, 147, 26, 0.18);
  background: var(--btc-soft);
  color: var(--btc-strong);
}

.badge--note {
  background: #f9fafb;
}

.notice {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fafaf9;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.notice--demo {
  background: #fff;
}

.main {
  padding: 32px 0 72px;
}

.site-footer {
  padding: 0 0 28px;
}

.site-footer__inner {
  width: min(calc(100% - 32px), var(--container));
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 10px 24px rgba(17, 24, 39, 0.06);
}

.site-footer__copy {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.82rem;
  line-height: 1.5;
}

.site-footer__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  transition: border-color 0.18s ease, background 0.18s ease, color 0.18s ease;
}

.site-footer__link:hover,
.site-footer__link.is-active {
  border-color: rgba(247, 147, 26, 0.24);
  background: var(--btc-soft);
  color: var(--btc-strong);
}

.mobile-legal {
  display: none;
}

.product-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.14fr) minmax(320px, 0.86fr);
  grid-template-areas:
    "gallery summary"
    "features purchase";
  gap: 20px 32px;
  align-items: stretch;
}

.product-gallery,
.product-summary,
.panel,
.summary-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel--flush {
  padding: 0;
  overflow: hidden;
}

.product-gallery {
  grid-area: gallery;
  height: 100%;
}

.product-gallery__stage {
  position: relative;
  padding: 28px;
  border-bottom: 1px solid var(--border);
  background: #f8f8f7;
}

.gallery-stage__note {
  position: absolute;
  top: 20px;
  left: 20px;
  max-width: 260px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.94);
  color: var(--text-soft);
  font-size: 0.8rem;
  line-height: 1.4;
}

.product-gallery__stage img {
  width: 100%;
  border-radius: 14px;
  background: #fff;
}

.gallery-thumbs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  padding: 16px;
}

.gallery-thumb {
  display: grid;
  gap: 10px;
  width: 100%;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
  text-align: left;
  cursor: pointer;
}

.gallery-thumb img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #f8f8f7;
}

.gallery-thumb span {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.gallery-thumb.is-active {
  border-color: var(--btc);
  box-shadow: inset 0 0 0 1px var(--btc);
}

.product-summary {
  grid-area: summary;
  padding: 26px;
  display: grid;
  align-content: start;
  height: 100%;
}

.btc-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.eyebrow {
  margin: 0 0 10px;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.product-title {
  margin: 0;
  font-size: clamp(2rem, 3.3vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.product-subtitle {
  margin: 16px 0 0;
  color: var(--text);
  font-size: 1.04rem;
  font-weight: 600;
}

.product-subcopy {
  margin: 12px 0 0;
  color: var(--text-soft);
  font-size: 0.98rem;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.metric-grid--summary {
  margin-top: 22px;
}

.metric-card {
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
}

.metric-card__label {
  margin: 0 0 6px;
  color: var(--text-muted);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.metric-card__value {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.availability-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 20px;
}

.availability {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}

.availability--ok {
  background: var(--success-bg);
  color: var(--success);
}

.availability--soon {
  background: #fff0e6;
  color: #c05621;
}

.price-panel {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
  padding: 20px 0 22px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.price {
  margin: 0;
  font-size: 2.4rem;
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.price-note {
  margin: 8px 0 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.price-panel__meta {
  max-width: 240px;
}

.price-panel__meta p {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.92rem;
}

.buy-box__section-title,
.panel__title,
.summary-card__title {
  margin: 0 0 14px;
  font-size: 1rem;
  font-weight: 700;
}

.meta-list {
  display: grid;
  gap: 12px;
  margin-top: 20px;
}

.meta-list--compact {
  gap: 0;
  margin-top: 18px;
}

.meta-list__item,
.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
}

.meta-list__item:last-child,
.spec-row:last-child {
  border-bottom: 0;
}

.meta-list__item span,
.spec-row__label {
  color: var(--text-muted);
}

.purchase-card {
  grid-area: purchase;
  position: static;
  display: grid;
  height: 100%;
  align-content: start;
  gap: 18px;
  padding: 22px;
}

.purchase-card--bitcoin {
  border-color: var(--btc-border);
  background: linear-gradient(180deg, #fffaf3 0%, var(--btc-soft) 100%);
}

.purchase-card__header,
.purchase-card__price,
.purchase-meta-list__item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.purchase-card__header {
  align-items: center;
}

.purchase-card__price {
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.purchase-card__price .price {
  font-size: 2.25rem;
  color: var(--btc-strong);
}

.purchase-card__sku {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.84rem;
  text-align: right;
}

.purchase-meta-list {
  display: grid;
  gap: 0;
}

.purchase-meta-list__item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}

.purchase-meta-list__item:last-child {
  border-bottom: 0;
}

.purchase-meta-list__item span {
  color: var(--text-muted);
}

.purchase-card__actions {
  display: grid;
  gap: 10px;
}

.waitlist-form {
  display: grid;
  gap: 12px;
}

.waitlist-form--compact {
  gap: 10px;
}

.waitlist-form .status-banner {
  margin: 0;
}

.purchase-card__note,
.purchase-card__rate {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.purchase-card__rate {
  color: var(--btc-strong);
  font-weight: 600;
}

.purchase-card__rate {
  padding-top: 2px;
}

.waitlist-panel__lead {
  margin: 0 0 20px;
  color: var(--text-soft);
  line-height: 1.6;
}

.waitlist-panel__hint {
  margin: 16px 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.purchase-box {
  display: grid;
  gap: 14px;
  margin-top: 24px;
  padding: 20px;
  border: 1px solid rgba(201, 106, 43, 0.22);
  border-radius: var(--radius-md);
  background: linear-gradient(180deg, #fff 0%, var(--accent-warm-soft) 100%);
}

.purchase-box__header {
  display: grid;
  gap: 6px;
}

.purchase-box__copy {
  margin: 0;
  color: var(--text-soft);
  font-size: 0.93rem;
}

.purchase-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 12px;
  align-items: end;
}

.trust-inline {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.trust-inline__item {
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #fff;
}

.trust-inline__item span {
  display: block;
  margin-bottom: 6px;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.trust-inline__item strong {
  font-size: 0.88rem;
}

.quantity-inline input,
.field,
.textarea,
.select {
  width: 100%;
  min-height: 48px;
  padding: 0 14px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--text);
}

.textarea {
  min-height: 110px;
  padding: 14px;
  resize: vertical;
}

.field:focus,
.textarea:focus,
.select:focus,
.quantity-inline input:focus {
  outline: 2px solid rgba(17, 24, 39, 0.08);
  border-color: #111827;
}

.list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.list li {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--text-soft);
}

.list strong {
  color: var(--text);
}

.panel {
  padding: 24px;
}

.panel--section,
.panel--sidebar,
.panel--feature {
  position: relative;
  overflow: hidden;
}

.panel--section::before,
.panel--sidebar::before,
.panel--feature::before {
  content: "";
  position: absolute;
  top: 10px;
  right: 12px;
  left: 12px;
  height: 5px;
  border-radius: 999px;
}

.panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.panel__eyebrow {
  margin: 0 0 6px;
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: #f5f5f4;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.panel__heading {
  margin: 0;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
}

.feature-band {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 24px;
  align-items: stretch;
}

.feature-band--inline {
  grid-area: features;
  margin-top: 0;
  grid-template-rows: 1fr;
  height: 100%;
}

.feature-band__item {
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  height: 100%;
}

.panel--feature-1 {
  background: linear-gradient(180deg, #fff8f2 0%, var(--accent-warm-soft) 100%);
}

.panel--feature-2 {
  background: linear-gradient(180deg, #f7faff 0%, var(--accent-blue-soft) 100%);
}

.panel--feature-3 {
  background: linear-gradient(180deg, #f7fcf8 0%, var(--accent-green-soft) 100%);
}

.panel--feature-1::before {
  background: var(--accent-warm);
}

.panel--feature-2::before {
  background: var(--accent-blue);
}

.panel--feature-3::before {
  background: var(--accent-green);
}

.panel--feature-1 .panel__eyebrow {
  background: rgba(218, 111, 34, 0.16);
  color: var(--accent-warm);
}

.panel--feature-2 .panel__eyebrow {
  background: rgba(29, 95, 194, 0.16);
  color: var(--accent-blue);
}

.panel--feature-3 .panel__eyebrow {
  background: rgba(20, 115, 70, 0.16);
  color: var(--accent-green);
}

.feature-band__title {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.feature-band__body {
  margin: 10px 0 0;
  color: var(--text-soft);
  font-size: 0.95rem;
}

.assurance-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.assurance-pill {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
  min-height: 58px;
  padding: 12px;
  border: 1px solid rgba(20, 115, 70, 0.18);
  border-radius: 16px;
  background: rgba(238, 248, 239, 0.78);
}

.assurance-pill__mark {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: var(--accent-green);
  color: #fff;
  font-weight: 800;
}

.assurance-pill strong,
.assurance-pill span {
  display: block;
}

.assurance-pill strong {
  color: var(--text);
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.assurance-pill span:not(.assurance-pill__mark) {
  margin-top: 3px;
  color: var(--text-soft);
  font-size: 0.78rem;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) 360px;
  grid-template-areas:
    "product tech"
    "primary status"
    "secondary faq"
    "hardware hardware";
  gap: 20px;
  margin-top: 20px;
  align-items: stretch;
}

.content-layout > .panel,
.section-row > .panel {
  height: 100%;
}

.section-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  align-items: stretch;
  height: 100%;
}

.section-row--primary {
  grid-area: primary;
}

.section-row--secondary {
  grid-area: secondary;
}

.panel--section-product::before {
  background: var(--accent-sand);
}

.panel--section-setup::before {
  background: var(--accent-warm);
}

.panel--section-firmware::before {
  background: var(--accent-blue);
}

.panel--section-extensions::before {
  background: var(--accent-green);
}

.panel--section-build::before {
  background: #111111;
}

.panel--section-hardware::before {
  background: var(--accent-green);
}

.panel--section-product {
  grid-area: product;
  --panel-accent: var(--accent-sand);
  background: linear-gradient(180deg, #fff9f3 0%, var(--accent-sand-soft) 100%);
}

.panel--section-setup {
  --panel-accent: var(--accent-warm);
  background: linear-gradient(180deg, #fff8f1 0%, var(--accent-warm-soft) 100%);
}

.panel--section-firmware {
  --panel-accent: var(--accent-blue);
  background: linear-gradient(180deg, #f7faff 0%, var(--accent-blue-soft) 100%);
}

.panel--section-extensions {
  --panel-accent: var(--accent-green);
  background: linear-gradient(180deg, #f7fcf8 0%, var(--accent-green-soft) 100%);
}

.panel--section-build {
  --panel-accent: #111111;
  background: linear-gradient(180deg, #fff 0%, #f3f4f6 100%);
}

.panel--section-hardware {
  grid-area: hardware;
  --panel-accent: var(--accent-green);
  background: linear-gradient(180deg, #f8fcf8 0%, var(--accent-green-soft) 100%);
}

.panel--section-product .panel__eyebrow {
  background: rgba(154, 107, 47, 0.16);
  color: var(--accent-sand);
}

.panel--section-setup .panel__eyebrow {
  background: rgba(218, 111, 34, 0.16);
  color: var(--accent-warm);
}

.panel--section-firmware .panel__eyebrow {
  background: rgba(29, 95, 194, 0.16);
  color: var(--accent-blue);
}

.panel--section-extensions .panel__eyebrow {
  background: rgba(20, 115, 70, 0.16);
  color: var(--accent-green);
}

.panel--section-build .panel__eyebrow {
  background: #f3f4f6;
  color: #111111;
}

.panel--section-hardware .panel__eyebrow {
  background: rgba(20, 115, 70, 0.16);
  color: var(--accent-green);
}

.panel--sidebar-tech::before {
  background: var(--accent-blue);
}

.panel--sidebar-status::before {
  background: var(--accent-green);
}

.panel--sidebar-faq::before {
  background: var(--accent-sand);
}

.panel--sidebar-tech,
.panel--sidebar-status,
.panel--sidebar-faq {
  background: #fcfcfb;
}

.panel--sidebar-tech {
  grid-area: tech;
  --panel-accent: var(--accent-blue);
}

.panel--sidebar-status {
  grid-area: status;
  --panel-accent: var(--accent-green);
}

.panel--sidebar-faq {
  grid-area: faq;
  --panel-accent: var(--accent-sand);
}

.panel--sidebar-tech .panel__eyebrow {
  background: rgba(29, 95, 194, 0.14);
  color: var(--accent-blue);
}

.panel--sidebar-status .panel__eyebrow {
  background: rgba(20, 115, 70, 0.14);
  color: var(--accent-green);
}

.panel--sidebar-faq .panel__eyebrow {
  background: rgba(154, 107, 47, 0.14);
  color: var(--accent-sand);
}

.body-copy {
  margin: 0;
  color: var(--text-soft);
}

.detail-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin-top: 18px;
}

.detail-list__item {
  position: relative;
  min-height: 100%;
  padding: 18px 0 18px 18px;
  border-top: 1px solid var(--border);
}

.detail-list__item::before {
  content: "";
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 0;
  width: 4px;
  border-radius: 999px;
  background: var(--panel-accent, #111111);
}

.item-row {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.item-copy {
  min-width: 0;
}

.item-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.78);
  color: var(--panel-accent, #111111);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

.item-icon svg {
  width: 18px;
  height: 18px;
}

.detail-list__title {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 700;
}

.detail-list__body {
  margin: 8px 0 0;
  color: var(--text-soft);
  font-size: 0.94rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.info-card,
.step-card,
.trust-list__item,
.faq-item {
  position: relative;
  min-height: 100%;
  padding: 18px 0 18px 18px;
  border: 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  background: transparent;
}

.panel--compact {
  display: grid;
  height: 100%;
  align-content: start;
}

.panel--compact .panel__header {
  margin-bottom: 14px;
}

.panel--compact .panel__heading {
  font-size: 1.28rem;
}

.panel--compact .card-grid,
.panel--compact .step-grid {
  grid-template-columns: 1fr;
  gap: 0;
}

.panel--compact .card-grid {
  margin-top: 2px;
}

.panel--compact .info-card::before,
.panel--compact .step-card::before,
.trust-list__item::before,
.faq-item::before {
  content: "";
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 0;
  width: 4px;
  border-radius: 999px;
  background: var(--panel-accent, #111111);
}

.panel--compact .card-grid .info-card:first-child,
.panel--compact .step-grid .step-card:first-child,
.trust-list .trust-list__item:first-child,
.faq-list .faq-item:first-child {
  padding-top: 8px;
}

.panel--compact .card-grid .info-card:first-child::before,
.panel--compact .step-grid .step-card:first-child::before,
.trust-list .trust-list__item:first-child::before,
.faq-list .faq-item:first-child::before {
  top: 8px;
}

.panel--compact .card-grid .info-card:last-child,
.panel--compact .step-grid .step-card:last-child,
.trust-list .trust-list__item:last-child,
.faq-list .faq-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.panel--compact .card-grid .info-card:last-child::before,
.panel--compact .step-grid .step-card:last-child::before,
.trust-list .trust-list__item:last-child::before,
.faq-list .faq-item:last-child::before {
  bottom: 0;
}

.info-card__title,
.step-card__title,
.faq-item__question {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 700;
}

.info-card__body,
.step-card__body,
.faq-item__answer {
  margin: 8px 0 0;
  color: var(--text-soft);
  font-size: 0.94rem;
}

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

.step-card__index {
  margin: 0 0 10px;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.trust-list,
.faq-list {
  display: grid;
  gap: 0;
}

.trust-list--compact .trust-list__item {
  padding-top: 12px;
  padding-bottom: 12px;
}

.trust-list--compact .trust-list__item::before {
  top: 12px;
  bottom: 12px;
}

.trust-list--compact .item-row {
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
}

.trust-list--compact .item-icon {
  width: 30px;
  height: 30px;
  border-radius: 9px;
}

.trust-list--compact .item-icon svg {
  width: 16px;
  height: 16px;
}

.trust-list__label {
  margin: 0 0 8px;
  color: var(--text-muted);
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.trust-list__value {
  margin: 0;
  color: var(--text);
}

.faq-item {
  padding-left: 0;
}

.faq-item::before {
  display: none;
}

.faq-item__toggle {
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18px;
  gap: 14px;
  align-items: center;
  padding: 12px 0;
  border: 0;
  background: transparent;
  color: inherit;
  text-align: left;
  cursor: pointer;
}

.faq-item__toggle .item-row {
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
}

.faq-item__toggle .item-icon {
  width: 30px;
  height: 30px;
  border-radius: 9px;
}

.faq-item__toggle .item-icon svg {
  width: 16px;
  height: 16px;
}

.faq-item__question {
  margin: 0;
}

.faq-item__chevron {
  position: relative;
  width: 14px;
  height: 14px;
  color: var(--text-muted);
}

.faq-item__chevron::before,
.faq-item__chevron::after {
  content: "";
  position: absolute;
  top: 6px;
  width: 8px;
  height: 1.8px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.18s ease;
}

.faq-item__chevron::before {
  left: 0;
  transform: rotate(45deg);
}

.faq-item__chevron::after {
  right: 0;
  transform: rotate(-45deg);
}

.faq-item.is-open .faq-item__chevron::before {
  transform: rotate(-45deg);
}

.faq-item.is-open .faq-item__chevron::after {
  transform: rotate(45deg);
}

.faq-item__content {
  padding: 0 0 14px 42px;
}

.faq-item__answer-wrap {
  border-left: 2px solid rgba(154, 107, 47, 0.22);
  padding-left: 14px;
}

.spec-table {
  display: grid;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.82);
}

.spec-table--hardware {
  margin-top: 18px;
}

.spec-row {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: start;
  padding: 14px 16px;
}

.spec-row__label,
.spec-row__value {
  margin: 0;
  min-width: 0;
  overflow-wrap: anywhere;
  line-height: 1.4;
}

.spec-row:nth-child(odd) {
  background: rgba(245, 245, 244, 0.65);
}

.spec-row__value {
  text-align: right;
}

.mobile-buybar {
  display: none;
}

.mobile-buybar__price {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
}

.mobile-buybar__note {
  margin: 4px 0 0;
  color: var(--text-muted);
  font-size: 0.82rem;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 28px;
  align-items: start;
}

.summary-card {
  position: sticky;
  top: 108px;
  padding: 24px;
}

.summary-card__product {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 18px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.summary-card__product img {
  width: 88px;
  height: 88px;
  object-fit: cover;
  border-radius: 16px;
  border: 1px solid var(--border);
  background: #f9fafb;
}

.summary-card__price {
  margin: 0;
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.summary-card__muted,
.muted {
  color: var(--text-muted);
}

.form-grid {
  display: grid;
  gap: 18px;
}

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

.form-grid--three {
  grid-template-columns: 120px 1fr 140px;
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-field label {
  font-size: 0.9rem;
  font-weight: 600;
}

.payment-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.payment-option {
  position: relative;
  display: block;
  min-height: 112px;
  padding: 18px 18px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
}

.payment-option:has(input:checked) {
  border-color: rgba(247, 147, 26, 0.45);
  box-shadow: 0 0 0 3px rgba(247, 147, 26, 0.12);
  transform: translateY(-1px);
}

.payment-option--disabled {
  opacity: 0.76;
  background: rgba(255, 248, 241, 0.72);
}

.payment-option input {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
}

.payment-option__content {
  display: grid;
  align-content: space-between;
  gap: 10px;
  min-height: 100%;
  min-width: 0;
}

.payment-option__topline {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: center;
}

.payment-option__icon {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(17, 24, 39, 0.08);
  border-radius: 12px;
  background: #faf8f5;
  color: #111827;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.92);
}

.payment-option__icon svg {
  width: 20px;
  height: 20px;
}

.payment-option__copy {
  min-width: 0;
}

.payment-option__eyebrow {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.payment-option__title {
  margin: 0;
  font-size: 1.06rem;
  font-weight: 700;
  line-height: 1.25;
}

.payment-option--lightning .payment-option__icon {
  color: #b45309;
  background: #fff2df;
}

.payment-option--onchain .payment-option__icon {
  color: #166534;
  background: #edf8ef;
}

.payment-option--stripe .payment-option__icon {
  color: #1d4ed8;
  background: #eef4ff;
}

.payment-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  width: fit-content;
}

.payment-pill--active {
  color: #0f5132;
  background: #e8f7ef;
}

.payment-pill--inactive {
  color: #9a3412;
  background: #fff0e6;
}

@media (min-width: 1081px) {
  .payment-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }

  .payment-option {
    min-height: 104px;
    padding: 16px;
  }

  .payment-option__topline {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 10px;
  }

  .payment-option__icon {
    width: 38px;
    height: 38px;
  }

  .payment-option__icon svg {
    width: 18px;
    height: 18px;
  }

  .payment-option__title {
    font-size: 1rem;
  }
}

@media (max-width: 640px) {
  .spec-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .spec-row__value {
    text-align: left;
  }
}

.status-chip {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border-radius: 999px;
  font-size: 0.88rem;
  font-weight: 700;
}

.status-chip--pending {
  color: var(--warning);
  background: var(--warning-bg);
}

.status-chip--confirming {
  color: #1d4ed8;
  background: #eff6ff;
}

.status-chip--paid {
  color: var(--success);
  background: var(--success-bg);
}

.status-chip--expired,
.status-chip--cancelled,
.status-chip--underpaid {
  color: var(--danger);
  background: var(--danger-bg);
}

.status-banner {
  margin-top: 18px;
  padding: 16px;
  border-radius: var(--radius-sm);
  font-size: 0.94rem;
  font-weight: 600;
}

.status-banner--success {
  background: var(--success-bg);
  color: var(--success);
}

.status-banner--warning {
  background: var(--warning-bg);
  color: var(--warning);
}

.status-banner--danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.payment-block {
  display: grid;
  gap: 16px;
}

.payment-block--qr {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.payment-grid {
  display: grid;
  grid-template-columns: minmax(220px, 240px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.qr-panel,
.payment-details,
.payment-meta {
  display: grid;
  gap: 14px;
}

.qr-frame {
  display: grid;
  place-items: center;
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
}

.qr-frame svg {
  display: block;
  width: 100%;
  height: auto;
}

.qr-caption {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.payment-meta__item {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: #fff;
}

.payment-meta__label {
  margin: 0 0 8px;
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.payment-meta__value {
  margin: 0;
  font-weight: 700;
  color: var(--text);
}

.payment-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.payment-actions .button {
  min-width: 180px;
}

.code-box {
  padding: 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #f9fafb;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.92rem;
  line-height: 1.6;
  word-break: break-all;
}

.row-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.summary-list {
  display: grid;
  gap: 14px;
}

.summary-list__item {
  padding: 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.summary-list__label {
  margin: 0 0 8px;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
}

.summary-list__value {
  margin: 0;
  color: var(--text);
}

.empty-state {
  width: min(calc(100% - 32px), 640px);
  margin: 80px auto;
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow);
  text-align: center;
}

.empty-state h1 {
  margin: 0;
  font-size: 2rem;
  letter-spacing: -0.03em;
}

.empty-state p {
  margin: 12px 0 0;
  color: var(--text-soft);
}

.legal-layout {
  display: block;
}

.legal-panel {
  max-width: 840px;
  margin: 0 auto;
}

.legal-lead {
  margin: 0 0 22px;
  color: var(--text-soft);
  line-height: 1.6;
}

.legal-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.legal-card {
  padding: 18px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-soft);
}

.legal-card__label,
.legal-block__label {
  margin: 0 0 8px;
  font-size: 0.76rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.legal-card__value,
.legal-copy {
  margin: 0;
  color: var(--text);
  font-weight: 700;
}

.legal-block {
  padding-top: 20px;
  margin-top: 20px;
  border-top: 1px solid var(--border);
}

.legal-address {
  margin: 0;
  color: var(--text);
  font-style: normal;
  line-height: 1.7;
}

.legal-mail {
  color: var(--btc-strong);
}

.skeleton {
  width: min(calc(100% - 32px), var(--container));
  margin: 40px auto;
  display: grid;
  gap: 24px;
}

.skeleton__block {
  min-height: 220px;
  border-radius: var(--radius-lg);
  background: linear-gradient(90deg, #f3f4f6 0%, #fafafa 50%, #f3f4f6 100%);
  background-size: 200% 100%;
  animation: shimmer 1.3s infinite linear;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

@media (max-width: 1080px) {
  .product-layout,
  .feature-band,
  .content-layout,
  .two-column,
  .section-row {
    grid-template-columns: 1fr;
  }

  .product-layout,
  .content-layout {
    grid-template-areas: none;
  }

  .product-gallery,
  .product-summary,
  .feature-band--inline,
  .purchase-card,
  .panel--section-product,
  .panel--section-hardware,
  .panel--sidebar-tech,
  .panel--sidebar-status,
  .panel--sidebar-faq,
  .section-row--primary,
  .section-row--secondary {
    grid-area: auto;
    height: auto;
  }

  .product-summary,
  .purchase-card,
  .summary-card {
    position: static;
  }

  .gallery-thumbs {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .card-grid,
  .step-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 760px) {
  .site-header__inner {
    grid-template-columns: auto auto;
    min-height: 60px;
    padding: 8px 10px;
    border-radius: 18px;
  }

  .top-nav,
  .header-actions .button--ghost {
    display: none;
  }

  .site-header {
    padding-top: 8px;
  }

  .brand__eyebrow {
    display: none;
  }

  .mobile-legal {
    display: block;
    margin-top: 10px;
  }

  .mobile-legal__inner {
    width: min(calc(100% - 32px), var(--container));
    margin: 0 auto;
    display: flex;
    justify-content: flex-end;
  }

  .mobile-legal__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 34px;
    padding: 0 12px;
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.88);
    color: var(--text-soft);
    font-size: 0.84rem;
    font-weight: 600;
  }

  .mobile-legal__link.is-active {
    border-color: rgba(247, 147, 26, 0.24);
    background: var(--btc-soft);
    color: var(--btc-strong);
  }

  .main {
    padding-top: 20px;
    padding-bottom: 120px;
  }

  .product-gallery__stage,
  .gallery-thumbs,
  .product-summary,
  .purchase-card,
  .summary-card {
    padding: 18px;
  }

  .panel:not(.panel--flush) {
    padding: 18px;
  }

  .gallery-thumbs {
    grid-template-columns: 1fr;
  }

  .gallery-stage__note {
    position: static;
    max-width: none;
    margin-bottom: 14px;
    border-radius: var(--radius-sm);
  }

  .metric-grid,
  .trust-inline,
  .assurance-grid,
  .card-grid,
  .step-grid,
  .section-row,
  .detail-list {
    grid-template-columns: 1fr;
  }

  .price-panel {
    flex-direction: column;
  }

  .purchase-card__header,
  .purchase-card__price,
  .purchase-meta-list__item {
    flex-direction: column;
    align-items: flex-start;
  }

  .purchase-card__sku {
    text-align: left;
  }

  .purchase-row,
  .form-grid--two,
  .form-grid--three {
    grid-template-columns: 1fr;
  }

  .row-between {
    flex-direction: column;
    align-items: stretch;
  }

  .payment-grid,
  .payment-meta {
    grid-template-columns: 1fr;
  }

  .payment-actions {
    flex-direction: column;
  }

  .payment-actions .button {
    width: 100%;
    min-width: 0;
  }

  .mobile-buybar {
    position: fixed;
    right: 12px;
    bottom: 12px;
    left: 12px;
    z-index: 40;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 10px 24px rgba(17, 24, 39, 0.12);
  }

  .mobile-buybar .button {
    min-width: 150px;
  }

  .site-footer__inner {
    display: grid;
    justify-content: stretch;
  }

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

  .site-footer__link {
    width: 100%;
  }
}