:root {
  color-scheme: dark;
  --yellow: #d9ff38;
  --green: #22c55e;
  --info: #06b6d4;
  --danger: #f43f5e;
  --bg: #06080d;
  --surface: #090c11;
  --panel: #0e1218;
  --rail: #070a0f;
  --control: #111720;
  --hover: #18222c;
  --text: #f7f8ef;
  --muted: #929a9f;
  --line: rgb(255 255 255 / 12%);
  --focus: #f3f5f1;
  --ink: #20252b;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    14px / 1.6 "Segoe UI",
    "Microsoft YaHei",
    sans-serif;
}
header {
  height: 56px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 24px;
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}
.brand {
  color: var(--green);
}
.section-links {
  display: grid;
  gap: 8px;
  margin: 16px 0;
}
a {
  color: var(--info);
  text-underline-offset: 3px;
}
h4 {
  font-size: 14px;
  margin: 8px 0;
}
header > span {
  overflow-wrap: anywhere;
  max-width: 55%;
}
.shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  height: calc(100dvh - 56px);
}
aside {
  padding: 24px 20px;
  border-right: 1px solid var(--line);
  background: var(--rail);
  overflow: auto;
  scrollbar-gutter: stable;
}
main {
  padding: 24px 32px;
  overflow: auto;
  scrollbar-gutter: stable;
}
h1 {
  font-size: 26px;
  margin: 0 0 12px;
}
h2 {
  font-size: 20px;
  margin: 0;
}
h3 {
  font-size: 16px;
  margin: 12px 0;
}
.kicker {
  color: var(--muted);
  font:
    11px / 1.4 Consolas,
    monospace;
  letter-spacing: 0.08em;
  margin: 0 0 8px;
}
.muted {
  color: var(--muted);
  font-size: 12px;
}
.heading,
.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}
.heading {
  justify-content: space-between;
}
section {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  margin-top: 20px;
}
label {
  display: block;
  margin: 8px 0;
}
input,
select,
textarea,
button {
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 9px 12px;
  background: var(--control);
  color: var(--text);
  font: inherit;
  max-width: 100%;
}
input,
textarea {
  width: 100%;
}
.toolbar input {
  flex: 1;
  min-width: 140px;
}
button {
  cursor: pointer;
  text-align: center;
}
button:hover:not(:disabled) {
  background: var(--hover);
  border-color: var(--muted);
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
  border-style: dashed;
}
button.primary {
  background: var(--yellow);
  color: color-mix(in srgb, var(--yellow) 14%, black);
  border-color: var(--yellow);
  font-weight: 700;
}
button.primary:hover:not(:disabled) {
  background: color-mix(in srgb, var(--yellow) 86%, white);
}
button.danger {
  border-color: var(--danger);
  color: color-mix(in srgb, var(--danger) 78%, white);
}
:focus-visible {
  outline: 2px solid var(--yellow);
  outline-offset: 3px;
}
#identity-form button {
  margin: 12px 0;
}
#session-state {
  color: var(--muted);
  font-size: 12px;
}
#notice {
  border-left: 3px solid var(--info);
  padding: 12px 16px;
  background: var(--panel);
  overflow-wrap: anywhere;
}
#notice[data-tone="error"] {
  border-color: var(--danger);
}
#notice[data-tone="success"] {
  border-color: var(--green);
}
.facts {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 12px;
  overflow: auto;
  max-height: 280px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font:
    12px / 1.6 Consolas,
    "Microsoft YaHei",
    monospace;
}
.rows {
  overflow: auto;
  max-height: 340px;
  scrollbar-gutter: stable;
}
.row {
  padding: 12px;
  border-bottom: 1px solid var(--line);
  overflow-wrap: anywhere;
}
.row p {
  margin: 4px 0;
}
.row .toolbar {
  margin-top: 8px;
}
.resource-row {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  text-align: left;
}
.resource-row[aria-current="true"] {
  background: var(--focus);
  color: var(--ink);
  border-left: 3px solid var(--yellow);
}
.resource-row[aria-current="true"]:hover {
  background: var(--focus);
}
.status {
  color: var(--info);
  font-size: 12px;
}
dialog {
  max-width: min(480px, 90vw);
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--panel);
  color: var(--text);
}
dialog::backdrop {
  background: rgb(0 0 0 / 75%);
}
/* 窄屏使用文档滚动；只锁内部 main/aside 不能阻止背景页面滚动。 */
body:has(dialog[open]) {
  overflow: hidden;
}
body:has(dialog[open]) main,
body:has(dialog[open]) aside {
  overflow: hidden;
}
@media (max-width: 760px) {
  header {
    padding: 0 16px;
  }
  .shell {
    display: block;
    height: auto;
  }
  aside {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  main {
    padding: 20px 16px;
  }
  .toolbar input {
    min-width: 0;
  }
}
@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
  }
}