* {
  box-sizing: border-box;
}

:root {
  --bg: #f5f7fb;
  --card: #fff;
  --text: #172033;
  --muted: #6a768c;
  --border: #e1e7f2;
  --border-strong: #cbd5e7;
  --primary: #245cff;
  --dark: #111827;
  --mark: #fff7e6;
  --mark-border: #ecc45d;
  --code-bg: #111827;
  --code-text: #dbe5f5;
  --shadow: 0 10px 28px rgba(31, 42, 70, .07);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

code,
pre,
input,
textarea {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 16px 44px;
}

.header {
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--primary);
  font-weight: 800;
  font-size: 12px;
  letter-spacing: .08em;
}

h1 {
  margin: 0;
  font-size: clamp(26px, 4vw, 38px);
  letter-spacing: -.04em;
}

.header p {
  margin: 8px 0 0;
  color: var(--muted);
}

.footer,
.drawer-actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.tips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.tips > div,
.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.tips > div {
  padding: 12px 14px;
}

.tips b {
  display: block;
  margin-bottom: 4px;
}

.tips span {
  color: var(--muted);
  font-size: 13px;
}

.panel {
  padding: 16px;
  margin-bottom: 14px;
}

.panel-head,
summary {
  margin-bottom: 14px;
}

summary {
  cursor: pointer;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "展开";
  float: right;
  margin-top: -36px;
  color: var(--primary);
  font-weight: 800;
}

details[open] summary::after {
  content: "收起";
}

h2 {
  margin: 0;
  font-size: 18px;
}

.panel p,
summary p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

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

.field,
.readonly,
.checks {
  display: block;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fbfcff;
  padding: 12px;
}

.field.need-edit {
  background: var(--mark);
  border-color: var(--mark-border);
}

/* 常改项强调 class：需要强调就给外层 label 加 need-edit */
.need-edit > span:first-child::after {
  content: "常改";
  display: inline-block;
  margin-left: 8px;
  padding: 2px 7px;
  border-radius: 999px;
  background: #ffedb0;
  color: #805000;
  font-size: 12px;
}

.field > span:first-child {
  display: block;
  font-weight: 750;
  margin-bottom: 7px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--border-strong);
  border-radius: 11px;
  padding: 10px 11px;
  background: #fff;
  color: var(--text);
  outline: none;
  font-size: 14px;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(36, 92, 255, .12);
}

small {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12.5px;
  word-break: break-all;
}

.check {
  display: flex;
  gap: 9px;
  align-items: center;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: #fbfcff;
  padding: 12px;
  font-weight: 650;
}

.check input,
.checks input {
  width: auto;
}

.checks {
  display: grid;
  gap: 8px;
}

.checks label {
  display: flex;
  gap: 8px;
  align-items: center;
}

.readonly {
  display: grid;
  gap: 8px;
}

.readonly code {
  display: block;
  padding: 8px;
  background: #eef2f8;
  border-radius: 10px;
  word-break: break-all;
}

button {
  border: 0;
  border-radius: 12px;
  padding: 11px 15px;
  background: var(--primary);
  color: #fff;
  font-weight: 800;
  cursor: pointer;
}

button.secondary {
  background: var(--dark);
}

button.ghost {
  background: #eef2f8;
  color: var(--text);
}

.footer {
  margin-top: 18px;
}

#message {
  color: #137a45;
  font-size: 14px;
}

.edge-btn {
  position: fixed;
  right: 0;
  top: 45%;
  z-index: 20;
  border-radius: 12px 0 0 12px;
  padding: 14px 9px;
  box-shadow: var(--shadow);
}

.mask {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 30;
  background: rgba(10, 16, 28, .24);
}

.mask.open {
  display: block;
}

.drawer {
  position: fixed;
  z-index: 40;
  top: 0;
  right: 0;
  width: min(740px, 92vw);
  height: 100vh;
  background: #fff;
  transform: translateX(100%);
  transition: transform .18s ease;
  box-shadow: -18px 0 44px rgba(17, 24, 39, .22);
  padding: 18px;
  display: flex;
  flex-direction: column;
}

.drawer.open {
  transform: translateX(0);
}

.drawer-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.drawer-head h2 {
  margin: 0;
}

.drawer-head p {
  margin: 5px 0 0;
  color: var(--muted);
}

.drawer-actions {
  padding: 12px 0;
}

#lineCount {
  margin-left: auto;
  color: var(--muted);
  font-size: 13px;
}

pre {
  margin: 0;
  flex: 1;
  overflow: auto;
  border-radius: 14px;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 16px;
  font-size: 13px;
  line-height: 1.45;
}

.tok-comment { color: #8190a8; }
.tok-string { color: #9be7a2; }
.tok-keyword { color: #ffd580; }
.tok-var { color: #8bd3ff; }

@media (max-width: 760px) {
  .tips {
    display: block;
  }

  .tips > div {
    margin-bottom: 10px;
  }
}