:root {
  --bg: #f2eee6;
  --paper: #fbfaf7;
  --panel: rgba(255, 252, 246, 0.92);
  --line: #d7cebf;
  --line-strong: #bca88b;
  --text: #1e232b;
  --muted: #6f737a;
  --accent: #8d1f15;
  --accent-deep: #5b1812;
  --success: #2f6f44;
  --error: #b3392f;
  --shadow: 0 18px 48px rgba(40, 29, 17, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.68), rgba(255, 255, 255, 0.92)),
    repeating-linear-gradient(
      0deg,
      rgba(141, 31, 21, 0.03),
      rgba(141, 31, 21, 0.03) 1px,
      transparent 1px,
      transparent 34px
    ),
    var(--bg);
  font-family: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

.shell {
  width: min(1340px, calc(100vw - 36px));
  margin: 0 auto;
}

.topbar {
  border-bottom: 1px solid var(--line);
  background: rgba(251, 250, 247, 0.85);
  backdrop-filter: blur(18px);
}

.topbar-inner {
  display: flex;
  justify-content: space-between;
  gap: 28px;
  padding: 24px 0 22px;
}

.eyebrow {
  display: inline-block;
  margin-bottom: 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand h1,
.section-head h2 {
  margin: 0;
  letter-spacing: 0;
}

.brand h1 {
  font-size: clamp(30px, 3.6vw, 42px);
  line-height: 1.08;
}

.brand p,
.section-head p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.runtime {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  gap: 8px;
  color: var(--muted);
  font-size: 13px;
  text-align: right;
}

.top-link {
  color: var(--accent-deep);
  text-decoration: none;
  font-weight: 700;
}

.top-link:hover {
  text-decoration: underline;
}

.layout {
  display: grid;
  grid-template-columns: 420px minmax(0, 1fr);
  gap: 24px;
  padding: 26px 0 42px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.controls,
.inspector {
  padding: 22px;
}

.field {
  display: block;
  margin-top: 22px;
}

.field span {
  display: block;
  margin-bottom: 10px;
  font-size: 14px;
  font-weight: 700;
}

textarea {
  width: 100%;
  min-height: 320px;
  resize: vertical;
  border: 1px solid var(--line);
  background: #fffdfa;
  color: var(--text);
  padding: 16px;
  font: inherit;
  line-height: 1.7;
}

textarea:focus,
button:focus {
  outline: 2px solid rgba(141, 31, 21, 0.18);
  outline-offset: 2px;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

button {
  border: 1px solid transparent;
  min-width: 148px;
  padding: 13px 16px;
  color: #fff;
  background: var(--accent);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

button.secondary {
  background: #fff7f3;
  color: var(--accent-deep);
  border-color: #ddc6bc;
}

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

button:disabled {
  background: #baa399;
  border-color: transparent;
  color: rgba(255, 255, 255, 0.9);
  cursor: wait;
}

.status-row {
  margin-top: 14px;
}

.status {
  color: var(--muted);
  font-size: 14px;
}

.status[data-tone="working"] {
  color: var(--accent);
}

.status[data-tone="success"] {
  color: var(--success);
}

.status[data-tone="error"] {
  color: var(--error);
}

.failures {
  margin-top: 18px;
  padding: 14px;
  border: 1px solid #e3c6c2;
  background: #fff5f4;
}

.failure-item + .failure-item {
  margin-top: 12px;
}

.failure-item strong {
  display: block;
  font-size: 13px;
}

.failure-item p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 320px;
  color: var(--muted);
  border: 1px dashed var(--line);
  background: rgba(255, 255, 255, 0.45);
}

.preview-list {
  display: grid;
  gap: 24px;
}

.preview-card {
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.preview-card:first-child {
  padding-top: 0;
  border-top: 0;
}

.preview-meta {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}

.meta-label {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 12px;
}

.doc-type {
  display: block;
  font-size: 24px;
  line-height: 1.1;
}

.doc-reason,
.source-info {
  margin: 8px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.source-title {
  display: block;
  max-width: 300px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
}

.source-meta {
  padding: 14px 16px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.outline-panel {
  margin-top: 16px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.outline-panel h3 {
  margin: 0;
  font-size: 15px;
}

.outline-list {
  margin: 12px 0 0;
  padding-left: 20px;
  line-height: 1.8;
}

.paper-wrap {
  margin-top: 18px;
  overflow-x: auto;
}

.paper {
  width: min(100%, 820px);
  margin: 0 auto;
  padding: 62px 72px 68px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  box-shadow: 0 12px 36px rgba(57, 36, 20, 0.12);
}

.paper-title {
  text-align: center;
  font-family: "FZXiaoBiaoSong-B05S", "STZhongsong", "Songti SC", serif;
  font-size: 31px;
  line-height: 1.5;
}

.paper-subtitle {
  margin-top: 10px;
  text-align: center;
  font-family: "FangSong", "FangSong_GB2312", "STFangsong", serif;
  font-size: 21px;
  line-height: 1.7;
  white-space: pre-wrap;
}

.paper-body {
  margin-top: 18px;
}

.paper-block {
  margin: 0;
  font-family: "FangSong", "FangSong_GB2312", "STFangsong", serif;
  font-size: 21px;
  line-height: 1.78;
  white-space: pre-wrap;
}

.paper-block + .paper-block {
  margin-top: 4px;
}

.paper-h1 {
  font-family: "SimHei", "Heiti SC", sans-serif;
  font-weight: 700;
  margin-top: 12px;
}

.paper-h2 {
  font-family: "KaiTi", "Kaiti SC", "STKaiti", serif;
  margin-top: 10px;
}

.paper-h3 {
  font-weight: 700;
  margin-top: 8px;
}

.paper-normal {
  text-indent: 2em;
}

@media (max-width: 1080px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .paper {
    padding: 42px 26px 44px;
  }

  .paper-title {
    font-size: 26px;
  }

  .paper-subtitle,
  .paper-block {
    font-size: 18px;
  }
}

@media (max-width: 720px) {
  .topbar-inner,
  .preview-meta {
    display: block;
  }

  .runtime {
    align-items: flex-start;
    margin-top: 14px;
    text-align: left;
  }

  .source-meta {
    margin-top: 14px;
  }

  .toolbar {
    display: grid;
    grid-template-columns: 1fr;
  }

  button {
    width: 100%;
  }
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-card {
  width: min(460px, 100%);
  padding: 32px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.login-card h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.1;
}

.login-card p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.6;
}

.login-form {
  margin-top: 24px;
}

.text-input {
  width: 100%;
  border: 1px solid var(--line);
  background: #fffdfa;
  color: var(--text);
  padding: 12px 14px;
  font: inherit;
}

.text-input:focus {
  outline: 2px solid rgba(141, 31, 21, 0.18);
  outline-offset: 2px;
}

.full-button {
  width: 100%;
  margin-top: 18px;
}

.flash-stack {
  margin-top: 18px;
  display: grid;
  gap: 10px;
}

.flash-item {
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  font-size: 14px;
}

.flash-success {
  border-color: #bfdcc8;
  background: #f2faf4;
}

.flash-error {
  border-color: #e4c2bd;
  background: #fff4f2;
}

.admin-layout {
  display: grid;
  gap: 24px;
  padding: 26px 0 42px;
}

.admin-panel {
  padding: 22px;
}

.admin-form {
  margin-top: 18px;
}

.short-textarea {
  min-height: 140px;
}

.compact-form {
  display: grid;
  gap: 14px;
}

.toggle-row {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 14px;
}

.user-list {
  display: grid;
  gap: 18px;
  margin-top: 18px;
}

.user-card {
  padding: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
}

.user-card-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.user-tag {
  color: var(--accent-deep);
  font-size: 12px;
  font-weight: 700;
}

.password-form {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
}

.user-meta-list {
  margin-top: 14px;
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
}