:root {
  color-scheme: light;
  --bg: #f7f8f6;
  --surface: #ffffff;
  --surface-subtle: #eef2f1;
  --text: #18201f;
  --text-muted: #52615f;
  --border: #c8d1cf;
  --primary: #087f73;
  --primary-strong: #05655c;
  --accent: #c94b12;
  --accent-strong: #a73b0b;
  --success: #167249;
  --warning: #8b5a00;
  --danger: #b4232c;
  --danger-button: #b4232c;
  --danger-button-strong: #8b1720;
  --focus: #0067c5;
  --shadow: 0 8px 24px rgba(24, 32, 31, 0.1);
  --radius: 6px;
  --content: 1120px;
  font-family: Inter, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  font-size: 16px;
  letter-spacing: 0;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  min-height: 100dvh;
  margin: 0;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: var(--primary-strong);
  text-underline-offset: 3px;
}

button,
input,
select,
textarea {
  font: inherit;
  letter-spacing: 0;
}

button,
.button {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: #fff;
  background: var(--primary);
  font-weight: 650;
  text-decoration: none;
  cursor: pointer;
  touch-action: manipulation;
  transition: background-color 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

button:hover,
.button:hover {
  background: var(--primary-strong);
}

button:active,
.button:active {
  box-shadow: inset 0 0 0 2px rgba(0, 0, 0, 0.12);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

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

.button-accent:hover {
  background: var(--accent-strong);
}

.button-secondary {
  color: var(--text);
  border-color: var(--border);
  background: var(--surface);
}

.button-secondary:hover {
  background: var(--surface-subtle);
}

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

.button-danger:hover {
  background: var(--danger-button-strong);
}

.button-link {
  min-height: 44px;
  padding-inline: 8px;
  color: var(--primary-strong);
  background: transparent;
}

.button-link:hover {
  background: var(--surface-subtle);
}

.status-support {
  margin-top: 24px;
}

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

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 8px;
  left: 8px;
  transform: translateY(-160%);
  padding: 10px 14px;
  color: var(--surface);
  background: var(--text);
}

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

.site-header {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 12px max(24px, calc((100% - var(--content)) / 2));
  border-bottom: 1px solid var(--border);
  background: rgba(247, 248, 246, 0.96);
}

.brand {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  padding: 5px;
  border: 2px solid var(--text);
  border-radius: 5px;
}

.brand-mark span {
  background: var(--primary);
}

.brand-mark span:last-child {
  background: var(--accent);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.primary-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-bottom: 3px solid transparent;
  color: var(--text-muted);
  font-weight: 600;
  text-decoration: none;
}

.primary-nav a[aria-current="page"] {
  border-bottom-color: var(--primary);
  color: var(--text);
}

main {
  min-height: calc(100dvh - 260px);
}

.page,
.hero-inner,
.section-inner {
  width: min(100% - 48px, var(--content));
  margin-inline: auto;
}

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

.page-narrow {
  width: min(100% - 48px, 640px);
}

.hero {
  min-height: min(650px, calc(100dvh - 72px));
  display: grid;
  align-items: center;
  padding-block: 48px;
  border-bottom: 1px solid var(--border);
  background-color: var(--surface);
}

.hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(360px, 0.95fr);
  align-items: center;
  gap: 64px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--primary-strong);
  font-weight: 700;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.2;
  letter-spacing: 0;
}

h1 {
  max-width: 15ch;
  font-size: 3rem;
}

h2 {
  font-size: 1.75rem;
}

h3 {
  font-size: 1.15rem;
}

.lede {
  max-width: 62ch;
  margin: 20px 0 0;
  color: var(--text-muted);
  font-size: 1.125rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  margin: 28px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.925rem;
}

.trust-row span::before {
  content: "";
  width: 8px;
  height: 8px;
  display: inline-block;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--success);
}

.product-preview {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #1e2725;
  box-shadow: var(--shadow);
}

.product-preview img {
  width: 100%;
  height: 100%;
  position: absolute;
  inset: 0;
  object-fit: contain;
}

.preview-fallback {
  min-height: 420px;
  display: grid;
  align-content: center;
  gap: 18px;
  padding: 32px;
  color: #fff;
}

.preview-line {
  height: 54px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  border: 1px solid #50605d;
  border-radius: 4px;
  background: #283431;
}

.preview-line strong {
  font-variant-numeric: tabular-nums;
}

.status-dot {
  width: 10px;
  height: 10px;
  display: inline-block;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--success);
}

.section-band {
  padding-block: 64px;
  border-bottom: 1px solid var(--border);
}

.section-band:nth-of-type(even) {
  background: var(--surface);
}

.section-heading {
  max-width: 720px;
  margin-bottom: 32px;
}

.section-heading p {
  color: var(--text-muted);
}

.feature-grid,
.status-grid,
.account-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature,
.status-item,
.account-panel,
.form-panel,
.notice {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
}

.feature,
.status-item,
.account-panel {
  padding: 24px;
}

.feature p,
.status-item p,
.account-panel p {
  margin-bottom: 0;
  color: var(--text-muted);
}

.form-panel {
  padding: 32px;
  box-shadow: var(--shadow);
}

.form-panel > p:first-of-type,
.page-intro {
  color: var(--text-muted);
}

.form-stack {
  display: grid;
  gap: 20px;
  margin-top: 28px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label,
.field legend {
  font-weight: 650;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid #84918f;
  border-radius: 4px;
  color: var(--text);
  background: var(--surface);
}

.field input[aria-invalid="true"] {
  border-color: var(--danger);
  box-shadow: 0 0 0 1px var(--danger);
}

.field-help,
.field-error {
  margin: 0;
  font-size: 0.875rem;
}

.field-help {
  color: var(--text-muted);
}

.field-error {
  color: var(--danger);
}

.checkbox-row {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: start;
  gap: 10px;
}

.checkbox-row input {
  width: 20px;
  height: 20px;
  margin-top: 3px;
}

.form-message,
.notice {
  padding: 14px 16px;
}

.form-message[hidden] {
  display: none;
}

.form-message.error,
.notice-danger {
  border: 1px solid #e1a7ab;
  color: #78171d;
  background: #fff1f2;
}

.form-message.success,
.notice-success {
  border: 1px solid #96ccb0;
  color: #0d5635;
  background: #effbf4;
}

.form-footer {
  margin-top: 24px;
  color: var(--text-muted);
}

.data-list {
  display: grid;
  grid-template-columns: minmax(130px, 0.35fr) minmax(0, 1fr);
  gap: 12px 20px;
  margin: 20px 0 0;
}

.data-list dt {
  color: var(--text-muted);
}

.data-list dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
  font-weight: 600;
}

.account-grid {
  grid-template-columns: 1.2fr 0.8fr;
  margin-top: 28px;
}

.account-panel-wide {
  grid-column: 1 / -1;
}

.credential-output {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
  margin-top: 16px;
}

.credential-output code,
.endpoint-row code {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 4px;
  overflow-wrap: anywhere;
  color: var(--text);
  background: var(--surface-subtle);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.endpoint-list {
  display: grid;
  gap: 16px;
  margin-top: 28px;
}

.endpoint-row {
  display: grid;
  grid-template-columns: 140px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.status-line {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}

.status-line[data-state="checking"] .status-dot {
  background: var(--warning);
}

.status-line[data-state="down"] .status-dot {
  background: var(--danger);
}

.legal-copy {
  max-width: 760px;
}

.legal-copy h2 {
  margin-top: 40px;
  font-size: 1.3rem;
}

.legal-copy li + li {
  margin-top: 8px;
}

.danger-zone {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 2px solid #d9a0a4;
}

dialog {
  width: min(100% - 32px, 520px);
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  background: var(--surface);
  box-shadow: var(--shadow);
}

dialog::backdrop {
  background: rgba(16, 24, 23, 0.62);
}

.dialog-body {
  padding: 28px;
}

.toast-region {
  position: fixed;
  z-index: 100;
  right: 20px;
  bottom: 20px;
  width: min(360px, calc(100% - 40px));
}

.toast {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-left: 5px solid var(--primary);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.page-loading {
  min-height: 45dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
}

.spinner {
  width: 22px;
  height: 22px;
  display: inline-block;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 20px 48px;
  padding: 36px max(24px, calc((100% - var(--content)) / 2));
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--surface);
}

.site-footer p {
  margin: 6px 0 0;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 20px;
}

.site-footer nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.filing {
  grid-column: 1 / -1;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 840px) {
  .hero {
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .product-preview {
    min-height: 320px;
  }

  .preview-fallback {
    min-height: 320px;
  }

  .feature-grid,
  .status-grid {
    grid-template-columns: 1fr 1fr;
  }

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

  .account-panel-wide {
    grid-column: auto;
  }

  .endpoint-row {
    grid-template-columns: 1fr auto;
  }

  .endpoint-row strong {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 4px;
    padding: 10px 16px;
  }

  .primary-nav {
    width: 100%;
    justify-content: space-between;
  }

  .primary-nav a {
    justify-content: center;
    flex: 1;
  }

  .page,
  .hero-inner,
  .section-inner {
    width: min(100% - 32px, var(--content));
  }

  .page {
    padding-block: 32px 56px;
  }

  h1 {
    max-width: none;
    font-size: 2.25rem;
  }

  .feature-grid,
  .status-grid {
    grid-template-columns: 1fr;
  }

  .form-panel {
    padding: 24px 18px;
  }

  .data-list {
    grid-template-columns: 1fr;
    gap: 2px;
  }

  .data-list dd + dt {
    margin-top: 10px;
  }

  .credential-output,
  .endpoint-row {
    grid-template-columns: 1fr;
  }

  .endpoint-row strong,
  .endpoint-row button {
    grid-column: auto;
  }

  .actions > *,
  .form-stack > button {
    width: 100%;
  }

  .site-footer {
    grid-template-columns: 1fr;
    padding-inline: 16px;
  }

  .site-footer nav {
    justify-content: flex-start;
  }

  .filing {
    grid-column: auto;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #151918;
    --surface: #1e2422;
    --surface-subtle: #29312f;
    --text: #f1f4f3;
    --text-muted: #b6c1be;
    --border: #52605d;
    --primary: #39b8a8;
    --primary-strong: #76d6ca;
    --accent: #f0783c;
    --accent-strong: #ff9663;
    --success: #58c58b;
    --warning: #e8b450;
    --danger: #f06a73;
    --danger-button: #b4232c;
    --danger-button-strong: #8b1720;
    --focus: #75baff;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
  }

  .site-header {
    background: rgba(21, 25, 24, 0.96);
  }

  button,
  .button {
    color: #10201d;
  }

  .button-secondary {
    color: var(--text);
  }

  .button-link {
    color: var(--primary-strong);
  }

  .button-danger {
    color: #fff;
  }

  .form-message.error,
  .notice-danger {
    color: #ffc4c7;
    background: #481d20;
  }

  .form-message.success,
  .notice-success {
    color: #b9f1d0;
    background: #173b29;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}