:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #18191c;
  --text-2: #61666d;
  --border: #e3e5e8;
  --primary: #fb7299;
  --primary-hover: #e85c86;
  --primary-soft: #fff1f6;
  --danger: #d0362c;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(0, 0, 0, .03), 0 8px 24px rgba(0, 0, 0, .05);
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 48px 20px 60px;
}

/* ---- 头部 ---- */
.hero { text-align: center; margin-bottom: 28px; }
.hero h1 { font-size: 30px; margin: 0 0 8px; letter-spacing: .5px; }
.subtitle { color: var(--text-2); margin: 0; font-size: 15px; }

/* ---- 卡片 ---- */
.card {
  background: var(--card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
  margin-bottom: 18px;
  border: 1px solid rgba(0, 0, 0, .02);
}

/* ---- 输入区 ---- */
.input-row { display: flex; gap: 10px; }

.input-row input {
  flex: 1;
  min-width: 0;
  height: 46px;
  padding: 0 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  background: #fbfbfc;
  outline: none;
  transition: border-color .15s, box-shadow .15s, background .15s;
}

.input-row input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(251, 114, 153, .15);
  background: #fff;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 46px;
  padding: 0 22px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: #fff;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all .15s;
}

.btn:hover { border-color: #cfd3d8; background: #f7f8fa; }

.btn.primary {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }

.btn:disabled { opacity: .6; cursor: not-allowed; }

/* ---- 高级设置 ---- */
.settings { margin-top: 16px; }

.settings summary {
  cursor: pointer;
  color: var(--text-2);
  font-size: 14px;
  user-select: none;
}

.settings summary:hover { color: var(--primary); }

.field { margin-top: 16px; }

.field label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 6px;
}

.field input {
  width: 100%;
  height: 42px;
  padding: 0 12px;
  border: 1px solid var(--border);
  border-radius: 9px;
  font-size: 14px;
  background: #fbfbfc;
  outline: none;
  transition: border-color .15s, box-shadow .15s, background .15s;
}

.field input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(251, 114, 153, .15);
  background: #fff;
}

.hint {
  font-size: 12.5px;
  color: var(--text-2);
  margin: 6px 0 0;
  line-height: 1.7;
}

.hint code {
  background: #f1f2f4;
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 12px;
}

.badge {
  font-size: 11px;
  background: var(--primary-soft);
  color: var(--primary);
  border-radius: 999px;
  padding: 2px 8px;
  vertical-align: 1px;
  font-weight: 500;
}

.badge.gray { background: #f1f2f4; color: var(--text-2); }

/* ---- 状态提示 ---- */
.status {
  margin-top: 16px;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 14px;
}

.status.loading { background: #f0f6ff; color: #2a5db0; }

.status.loading::before {
  content: "";
  display: inline-block;
  width: 12px;
  height: 12px;
  margin-right: 8px;
  border: 2px solid #b9d0f5;
  border-top-color: #2a5db0;
  border-radius: 50%;
  animation: spin .8s linear infinite;
  vertical-align: -1px;
}

.status.error { background: #fdf0ef; color: var(--danger); }

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

.hidden { display: none !important; }

/* ---- 视频信息卡 ---- */
.video-card {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  align-items: start;
}

.video-pic {
  width: 160px;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 10px;
  background: #eef0f2;
}

.video-info h2 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.5;
}

.muted {
  color: var(--text-2);
  font-size: 14px;
  margin: 0 0 8px;
  word-break: break-all;
}

.tags { margin: 0; }

.tag {
  display: inline-block;
  font-size: 12px;
  background: #f1f2f4;
  color: var(--text-2);
  border-radius: 999px;
  padding: 3px 10px;
  margin: 0 6px 4px 0;
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  padding-top: 14px;
  border-top: 1px dashed var(--border);
}

.actions .btn { height: 40px; padding: 0 18px; font-size: 14px; }

/* ---- Markdown 正文 ---- */
.markdown-body { font-size: 15.5px; overflow-wrap: anywhere; }

.markdown-body h1 { font-size: 24px; margin: 8px 0 12px; line-height: 1.45; }
.markdown-body h1:first-child { margin-top: 0; }

.markdown-body h2 {
  font-size: 19px;
  margin: 28px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

.markdown-body h3 { font-size: 16.5px; margin: 22px 0 8px; }
.markdown-body h4 { font-size: 15.5px; margin: 18px 0 6px; }

.markdown-body p { margin: 10px 0; }

.markdown-body blockquote {
  margin: 12px 0;
  padding: 10px 16px;
  border-left: 3px solid var(--primary);
  background: var(--primary-soft);
  border-radius: 0 8px 8px 0;
}

.markdown-body blockquote p { margin: 0; }

.markdown-body ul, .markdown-body ol { padding-left: 24px; margin: 8px 0; }
.markdown-body li { margin: 4px 0; }

.markdown-body a { color: var(--primary); text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }

.markdown-body code {
  background: #f1f2f4;
  border-radius: 4px;
  padding: 2px 6px;
  font-size: .9em;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace;
}

.markdown-body pre {
  background: #16181d;
  color: #e6e8eb;
  padding: 14px 16px;
  border-radius: 10px;
  overflow-x: auto;
}

.markdown-body pre code { background: none; padding: 0; color: inherit; }

.markdown-body hr { border: none; border-top: 1px solid var(--border); margin: 24px 0; }

.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 12px 0;
  font-size: 14px;
}

.markdown-body th, .markdown-body td {
  border: 1px solid var(--border);
  padding: 8px 10px;
  text-align: left;
}

.markdown-body th { background: #f7f8fa; }

.markdown-body .fallback { white-space: pre-wrap; }

/* ---- 页脚 ---- */
.foot {
  text-align: center;
  color: #9aa0a6;
  font-size: 12.5px;
  margin-top: 40px;
}

.foot p { margin: 0; }

/* ---- 响应式 ---- */
@media (max-width: 640px) {
  .page { padding: 28px 14px 40px; }
  .hero h1 { font-size: 24px; }
  .subtitle { font-size: 13.5px; }
  .input-row { flex-direction: column; }
  .input-row .btn { width: 100%; }
  .video-card { grid-template-columns: 1fr; }
  .video-pic { width: 100%; max-width: 320px; }
  .actions { flex-wrap: wrap; }
  .actions .btn { flex: 1 1 auto; }
}