/* writer-service — 编辑感设计系统。无构建步骤、无外链字体,纯系统字栈。 */
:root {
  --paper:   #FAF8F3;
  --paper-2: #F3EFE6;
  --ink:     #1C1A17;
  --ink-2:   #4A453C;
  --muted:   #8A8475;
  --line:    #E3DDD0;
  --line-2:  #D6CFBE;
  --accent:  #B8482A;
  --accent-d:#9A3A20;
  --ok:      #5B7A4E;
  --card:    #FFFFFF;
  --shadow:  0 1px 2px rgba(28,26,23,.04), 0 8px 30px rgba(28,26,23,.05);
  /* 衬线:首选本地自包含思源宋体(/fonts/noto-serif-sc.css),逐级回落系统宋体 */
  --serif:  "Noto Serif SC", "Songti SC", "STSong", "Source Han Serif SC", "Noto Serif CJK SC", "Palatino Linotype", Palatino, Georgia, serif;
  --sans:   -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --maxw: 1120px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "kern" 1, "liga" 1;
}
.serif { font-feature-settings: "kern" 1, "liga" 1, "onum" 1, "pnum" 1; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-d); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
.serif { font-family: var(--serif); }

/* —— 顶栏 —— */
.topbar {
  position: sticky; top: 0; z-index: 20;
  background: rgba(250,248,243,.86);
  backdrop-filter: saturate(150%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.topbar .wrap { display: flex; align-items: center; gap: 18px; height: 62px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--serif); font-size: 23px; font-weight: 600;
  letter-spacing: .2px; color: var(--ink); line-height: 1;
}
.brand .mark { width: 30px; height: 30px; flex: 0 0 auto; display: block; }
.brand .mark path { stroke: var(--accent); }
.brand .wordmark { letter-spacing: .3px; }
.brand .dot { color: var(--accent); }
.brand small {
  font-family: var(--sans); font-weight: 400; font-size: 12px;
  color: var(--muted); letter-spacing: .12em; text-transform: uppercase;
  margin-left: 10px;
}
.topbar .spacer { flex: 1; }
.topbar .meta { color: var(--ink-2); font-size: 13.5px; }
.topbar .meta b { color: var(--ink); font-weight: 600; }

/* —— 小标签 —— */
.eyebrow {
  font-size: 12px; letter-spacing: .22em; text-transform: uppercase;
  color: var(--muted); font-weight: 600;
}

/* —— 按钮 —— */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-size: 15px; font-weight: 500; cursor: pointer;
  padding: 11px 22px; border-radius: 999px; border: 1px solid transparent;
  background: var(--ink); color: var(--paper); transition: .18s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); background: #000; }
.btn:disabled { opacity: .45; cursor: default; transform: none; }
.btn.accent { background: var(--accent); }
.btn.accent:hover { background: var(--accent-d); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-2); }
.btn.ghost:hover { background: var(--paper-2); }
.btn.sm { padding: 7px 15px; font-size: 13.5px; }

/* —— 表单控件 —— */
.field { margin: 0 0 18px; }
.field label {
  display: block; font-size: 13px; font-weight: 600; color: var(--ink-2);
  margin-bottom: 7px; letter-spacing: .01em;
}
.field .hint { font-weight: 400; color: var(--muted); margin-left: 6px; }
input, textarea {
  width: 100%; box-sizing: border-box; font: inherit;
  background: var(--card); color: var(--ink);
  border: 1px solid var(--line-2); border-radius: 12px;
  padding: 12px 14px; transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus {
  outline: none; border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(184,72,42,.12);
}
textarea { resize: vertical; min-height: 96px; line-height: 1.6; }
::placeholder { color: #B6AF9E; }

/* —— 卡片 —— */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: 18px; box-shadow: var(--shadow);
}
.hidden { display: none !important; }
.muted { color: var(--muted); }

/* —— 提示条 —— */
.note {
  border-radius: 12px; padding: 11px 14px; font-size: 14px;
  border: 1px solid var(--line-2); background: var(--paper-2); color: var(--ink-2);
}
.note.err { border-color: #E2B7AC; background: #FBEEEA; color: var(--accent-d); }
.note.ok  { border-color: #C3D3BB; background: #EEF3EA; color: var(--ok); }

/* —— 轻量 toast(全局复用) —— */
.toast-host {
  position: fixed; left: 50%; bottom: 28px; transform: translateX(-50%);
  z-index: 1000; display: flex; flex-direction: column; align-items: center;
  gap: 8px; pointer-events: none;
}
.toast {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--ink); color: var(--paper);
  font-size: 14px; font-weight: 500; line-height: 1;
  padding: 12px 18px; border-radius: 999px;
  box-shadow: 0 6px 24px rgba(28,26,23,.22);
  opacity: 0; transform: translateY(8px); transition: opacity .2s, transform .2s;
  max-width: min(86vw, 420px);
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast .ico { color: var(--ok); font-weight: 700; }
@media (prefers-reduced-motion: reduce) {
  .toast { transition: opacity .15s; transform: none; }
  .toast.show { transform: none; }
}