:root {
  color-scheme: light dark;
  --bg: #f2f5f6;
  --surface: #fbfcfc;
  --surface-raised: #ffffff;
  --surface-muted: #e7edef;
  --ink: #172023;
  --ink-soft: #526064;
  --line: #ccd7da;
  --line-strong: #aab9bd;
  --accent: #096f82;
  --accent-hover: #075d6c;
  --accent-soft: #d9edf1;
  --accent-contrast: #f7fbfc;
  --danger: #a33434;
  --danger-hover: #852a2a;
  --danger-soft: #f7e4e2;
  --danger-contrast: #fff8f7;
  --success: #26704f;
  --success-soft: #dfeee7;
  --warning: #8a6115;
  --warning-soft: #f4ead3;
  --shadow: 0 22px 60px rgba(37, 62, 68, 0.1);
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 10px;
  --shell: 1180px;
  font-family: "Avenir Next", "Segoe UI Variable", "Segoe UI", Helvetica, Arial, sans-serif;
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101719;
    --surface: #151f22;
    --surface-raised: #1b272a;
    --surface-muted: #233135;
    --ink: #edf4f5;
    --ink-soft: #aab9bd;
    --line: #33464b;
    --line-strong: #51676c;
    --accent: #58b5c6;
    --accent-hover: #78c7d5;
    --accent-soft: #153b42;
    --accent-contrast: #0b2024;
    --danger: #ef8b83;
    --danger-hover: #ffaaa4;
    --danger-soft: #432625;
    --danger-contrast: #32100f;
    --success: #7ac39e;
    --success-soft: #1c3b2e;
    --warning: #ddb66b;
    --warning-soft: #42351f;
    --shadow: 0 26px 70px rgba(0, 0, 0, 0.28);
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  background:
    linear-gradient(160deg, color-mix(in srgb, var(--accent-soft) 56%, transparent) 0, transparent 28rem),
    var(--bg);
  color: var(--ink);
  line-height: 1.5;
}

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

button {
  color: inherit;
}

button:focus-visible,
a:focus-visible,
[tabindex]:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 72%, transparent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  background: var(--ink);
  color: var(--surface);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(var(--shell), calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid color-mix(in srgb, var(--line) 76%, transparent);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.header-inner {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--ink);
  font-weight: 700;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.brand-mark {
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, var(--line));
  border-radius: 9px;
  background: var(--accent-soft);
}

.brand-mark::before,
.brand-mark::after,
.brand-mark span {
  content: "";
  position: absolute;
  width: 14px;
  height: 5px;
  border: 1px solid var(--accent);
  border-radius: 3px;
}

.brand-mark {
  position: relative;
}

.brand-mark::before {
  transform: translateY(-5px);
}

.brand-mark span {
  transform: translateY(0);
}

.brand-mark::after {
  transform: translateY(5px);
}

.header-status {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--ink-soft);
  font-size: 0.875rem;
  font-weight: 650;
}

.connection-indicator {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--line-strong);
}

.connection-indicator[data-state="ready"] {
  background: var(--success);
}

.connection-indicator[data-state="error"] {
  background: var(--danger);
}

.page {
  padding-block: 72px 96px;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(260px, 0.55fr);
  align-items: end;
  gap: 64px;
  min-height: 280px;
  margin-bottom: 44px;
}

.eyebrow,
.container-role {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.intro h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.35rem, 8vw, 5.8rem);
  font-weight: 720;
  letter-spacing: -0.072em;
  line-height: 0.91;
}

.intro h1 span {
  display: block;
  white-space: nowrap;
}

.intro-copy {
  max-width: 590px;
  margin: 26px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.8vw, 1.2rem);
}

.phase-panel {
  display: grid;
  gap: 6px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  box-shadow: var(--shadow);
}

.phase-panel > span {
  color: var(--ink-soft);
  font-size: 0.78rem;
  font-weight: 700;
}

.phase-panel strong {
  margin-bottom: 16px;
  font-size: 1.4rem;
  letter-spacing: -0.025em;
}

.notice {
  display: grid;
  grid-template-columns: minmax(180px, 0.36fr) 1fr;
  gap: 18px;
  align-items: baseline;
  margin-bottom: 76px;
  padding: 17px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--surface);
}

.notice > span:first-child {
  font-weight: 760;
}

.notice > span:last-child {
  color: var(--ink-soft);
}

.notice[data-tone="success"] {
  border-color: color-mix(in srgb, var(--success) 42%, var(--line));
  background: var(--success-soft);
}

.notice[data-tone="warning"] {
  border-color: color-mix(in srgb, var(--warning) 42%, var(--line));
  background: var(--warning-soft);
}

.notice[data-tone="error"] {
  border-color: color-mix(in srgb, var(--danger) 42%, var(--line));
  background: var(--danger-soft);
}

.section-heading {
  margin-bottom: 28px;
}

.section-heading h2,
.activity-heading h2,
.verification-summary h2 {
  margin: 0;
  font-size: clamp(1.75rem, 4vw, 2.7rem);
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.section-heading p,
.activity-heading p,
.verification-summary > p:last-child {
  max-width: 640px;
  margin: 10px 0 0;
  color: var(--ink-soft);
}

.asset-section,
.workflow-section,
.verification-section {
  margin-bottom: 92px;
}

.asset-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 22px;
}

.asset-card {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-raised);
  box-shadow: var(--shadow);
}

.restore-card {
  margin-top: 42px;
}

.asset-card-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 18px;
}

.asset-card-heading .container-role,
.verification-summary .container-role {
  margin-bottom: 5px;
}

.asset-card h3 {
  margin: 0;
  font-size: 1.48rem;
  letter-spacing: -0.035em;
}

.state-label {
  flex: none;
  padding: 5px 9px;
  border-radius: 8px;
  background: var(--surface-muted);
  color: var(--ink-soft);
  font-size: 0.74rem;
  font-weight: 800;
}

.state-label[data-state="present"] {
  background: var(--success-soft);
  color: var(--success);
}

.state-label[data-state="missing"] {
  background: var(--surface-muted);
}

.state-label[data-state="error"] {
  background: var(--danger-soft);
  color: var(--danger);
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent-soft) 70%, transparent), transparent),
    var(--surface-muted);
}

.media-frame img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: contain;
  background: var(--surface-muted);
}

.media-skeleton {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    110deg,
    var(--surface-muted) 20%,
    color-mix(in srgb, var(--surface-raised) 68%, var(--surface-muted)) 44%,
    var(--surface-muted) 68%
  );
  background-size: 220% 100%;
}

@media (prefers-reduced-motion: no-preference) {
  .media-frame[data-state="loading"] .media-skeleton {
    animation: skeleton-sweep 1.5s ease-in-out infinite;
  }
}

@keyframes skeleton-sweep {
  to {
    background-position: -220% 0;
  }
}

.media-frame:not([data-state="loading"]) .media-skeleton {
  display: none;
}

.media-empty {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  justify-items: center;
  gap: 5px;
  padding: 24px;
  text-align: center;
}

.media-empty[hidden] {
  display: none;
}

.media-empty > span:last-child {
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.empty-symbol {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  margin-bottom: 8px;
  border: 1px solid var(--line-strong);
  border-radius: 12px;
  color: var(--accent);
  font-weight: 800;
}

.metadata {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 24px;
  margin: 22px 0 0;
}

.metadata div,
.verification-facts div {
  min-width: 0;
}

.metadata dt,
.verification-facts dt {
  margin-bottom: 3px;
  color: var(--ink-soft);
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

.metadata dd,
.verification-facts dd {
  overflow-wrap: anywhere;
  margin: 0;
  font-size: 0.9rem;
  font-weight: 690;
}

.hash-value {
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
}

.workflow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-step {
  position: relative;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  min-width: 0;
  padding: 24px 24px 0 0;
}

.workflow-step:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 18px;
  right: 0;
  left: 50px;
  height: 1px;
  background: var(--line);
}

.step-number {
  position: relative;
  z-index: 1;
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--bg);
  color: var(--ink-soft);
  font-weight: 800;
}

.workflow-step[data-state="available"] .step-number {
  border-color: var(--accent);
  background: var(--accent-soft);
  color: var(--accent);
}

.workflow-step[data-state="complete"] .step-number {
  border-color: var(--success);
  background: var(--success-soft);
  color: var(--success);
}

.step-content {
  display: flex;
  min-height: 240px;
  flex-direction: column;
  align-items: flex-start;
}

.step-content h3 {
  margin: 3px 0 9px;
  font-size: 1.2rem;
}

.step-content > p:not(.action-reason) {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.action-reason {
  margin: 12px 0 22px;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.step-content .button {
  margin-top: auto;
}

.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 17px;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: 760;
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 140ms ease, background-color 140ms ease, border-color 140ms ease;
}

.button:hover:not(:disabled) {
  transform: translateY(-1px);
}

.button:active:not(:disabled) {
  transform: translateY(1px) scale(0.99);
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

.button-primary {
  background: var(--accent);
  color: var(--accent-contrast);
}

.button-primary:hover:not(:disabled) {
  background: var(--accent-hover);
}

.button-secondary {
  border-color: var(--line-strong);
  background: var(--surface-raised);
  color: var(--ink);
}

.button-secondary:hover:not(:disabled) {
  border-color: var(--accent);
}

.button-danger {
  background: var(--danger);
  color: var(--danger-contrast);
}

.button-danger:hover:not(:disabled) {
  background: var(--danger-hover);
}

.button-compact {
  min-height: 38px;
  padding-inline: 13px;
  font-size: 0.82rem;
}

.verification-section {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(300px, 0.7fr);
  gap: 54px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--accent-soft);
}

.verification-summary .container-role {
  color: var(--accent);
}

.verification-facts {
  display: grid;
  align-content: center;
  gap: 19px;
  margin: 0;
}

.activity-section {
  padding-top: 30px;
  border-top: 1px solid var(--line);
}

.activity-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.activity-heading h2 {
  font-size: 1.55rem;
}

.activity-heading p {
  font-size: 0.88rem;
}

.text-button {
  padding: 6px 0;
  border: 0;
  border-bottom: 1px solid currentColor;
  background: transparent;
  color: var(--accent);
  font-weight: 720;
  cursor: pointer;
}

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

.activity-item {
  display: grid;
  grid-template-columns: minmax(120px, 0.24fr) 1fr;
  gap: 22px;
  padding: 15px 17px;
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.activity-time {
  color: var(--ink-soft);
  font-size: 0.79rem;
  font-variant-numeric: tabular-nums;
}

.activity-message {
  font-weight: 650;
}

.activity-request {
  display: block;
  margin-top: 2px;
  color: var(--ink-soft);
  font-family: ui-monospace, "SFMono-Regular", Consolas, monospace;
  font-size: 0.72rem;
  overflow-wrap: anywhere;
}

.activity-empty {
  padding: 22px 0;
  color: var(--ink-soft);
}

.site-footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.confirm-dialog {
  width: min(520px, calc(100% - 32px));
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface-raised);
  color: var(--ink);
  box-shadow: 0 32px 90px rgba(10, 22, 25, 0.3);
}

.confirm-dialog::backdrop {
  background: rgba(15, 25, 28, 0.64);
  backdrop-filter: blur(3px);
}

.confirm-dialog form {
  padding: 30px;
}

.confirm-dialog h2 {
  margin: 0;
  font-size: 1.85rem;
  letter-spacing: -0.04em;
}

.confirm-dialog form > p:not(.container-role) {
  margin: 12px 0 26px;
  color: var(--ink-soft);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

@media (max-width: 820px) {
  .shell {
    width: min(100% - 32px, var(--shell));
  }

  .page {
    padding-block: 48px 72px;
  }

  .intro {
    grid-template-columns: 1fr;
    gap: 32px;
    min-height: 0;
  }

  .phase-panel {
    max-width: none;
  }

  .notice {
    grid-template-columns: 1fr;
    gap: 4px;
    margin-bottom: 60px;
  }

  .asset-grid,
  .verification-section {
    grid-template-columns: 1fr;
  }

  .restore-card {
    margin-top: 0;
  }

  .workflow {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .workflow-step {
    padding: 0;
  }

  .workflow-step:not(:last-child)::after {
    top: 40px;
    bottom: -17px;
    left: 18px;
    width: 1px;
    height: auto;
  }

  .step-content {
    min-height: 0;
    padding-bottom: 34px;
  }

  .step-content .button {
    margin-top: 0;
  }

  .verification-section {
    gap: 30px;
  }
}

@media (max-width: 540px) {
  .header-inner,
  .footer-inner,
  .activity-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-inner {
    justify-content: center;
    gap: 5px;
    padding-block: 14px;
  }

  .header-status {
    margin-left: 41px;
  }

  .intro h1 {
    letter-spacing: -0.06em;
  }

  .asset-card,
  .verification-section {
    padding: 18px;
  }

  .metadata {
    grid-template-columns: 1fr;
    gap: 13px;
  }

  .media-frame {
    aspect-ratio: 4 / 3;
  }

  .activity-item {
    grid-template-columns: 1fr;
    gap: 3px;
  }

  .footer-inner {
    justify-content: center;
    padding-block: 18px;
  }

  .dialog-actions {
    align-items: stretch;
    flex-direction: column-reverse;
  }
}

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

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media (prefers-reduced-transparency: reduce) {
  .site-header {
    background: var(--bg);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}