/* ==========================================================
   域景恒 · 全站样式（浅色主题）
   ========================================================== */
:root {
  --bg: #f7f6f3;
  --bg-soft: #fbfaf8;
  --card: #ffffff;
  --ink: #1c1f23;
  --ink-2: #4a5057;
  --ink-3: #8a9199;
  --line: #e6e3de;
  --line-2: #efece7;
  --brand: #b8352f;
  --brand-soft: #fdf1f0;
  --brand-dark: #93241f;
  --gold: #b8860b;
  --ok: #2f7d4f;
  --ok-soft: #eef7f1;
  --warn: #a86a12;
  --warn-soft: #fdf6e9;
  --info: #2a5d8f;
  --info-soft: #eef4fa;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 2px rgba(28,31,35,.04), 0 8px 24px -12px rgba(28,31,35,.12);
  --shadow-lg: 0 2px 4px rgba(28,31,35,.05), 0 24px 48px -20px rgba(28,31,35,.2);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB",
          "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --serif: "Songti SC", "SimSun", "Source Han Serif SC", Georgia, serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Cascadia Mono", monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; color: inherit; }
h1, h2, h3, h4 { margin: 0; font-weight: 650; letter-spacing: -.01em; }
img { max-width: 100%; display: block; }
code, pre { font-family: var(--mono); }

/* ---------- 布局 ---------- */
.wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.wrap-narrow { max-width: 820px; margin: 0 auto; padding: 0 20px; }
.row { display: flex; align-items: center; gap: 12px; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.wrapflex { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.mt8{margin-top:8px}.mt12{margin-top:12px}.mt16{margin-top:16px}.mt24{margin-top:24px}.mt32{margin-top:32px}
.mb8{margin-bottom:8px}.mb12{margin-bottom:12px}.mb16{margin-bottom:16px}.mb24{margin-bottom:24px}
.muted { color: var(--ink-3); }
.small { font-size: 13px; }
.tiny { font-size: 12px; }
.center { text-align: center; }
.nowrap { white-space: nowrap; }
.hidden { display: none !important; }
.mono { font-family: var(--mono); }

/* ---------- 顶栏 ---------- */
.topbar {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255,255,255,.92);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar .inner { display: flex; align-items: center; gap: 20px; height: 60px; }
.logo { display: flex; align-items: center; gap: 9px; font-weight: 700; font-size: 17px; white-space: nowrap; }
.logo .mark {
  width: 30px; height: 30px; border-radius: 8px; flex: 0 0 auto;
  background: linear-gradient(140deg, var(--brand), #d4664f);
  color: #fff; display: grid; place-items: center; font-size: 16px; font-weight: 700;
  font-family: var(--serif); box-shadow: 0 4px 12px -4px rgba(184,53,47,.5);
}
.nav { display: flex; gap: 4px; flex: 1; }
.nav a { padding: 7px 12px; border-radius: 8px; color: var(--ink-2); font-size: 14px; }
.nav a:hover { background: var(--line-2); color: var(--ink); }
.nav a.on { background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.userbox { display: flex; align-items: center; gap: 10px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 16px; border-radius: var(--radius-sm); border: 1px solid var(--line);
  background: #fff; cursor: pointer; font-size: 14px; font-weight: 550;
  transition: .15s; white-space: nowrap; line-height: 1.2;
}
.btn:hover { border-color: #d5d1ca; background: var(--bg-soft); }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--brand); border-color: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); border-color: var(--brand-dark); }
.btn-ghost { border-color: transparent; background: transparent; color: var(--ink-2); }
.btn-ghost:hover { background: var(--line-2); }
.btn-sm { padding: 6px 11px; font-size: 13px; }
.btn-lg { padding: 13px 26px; font-size: 16px; border-radius: 10px; }
.btn-block { width: 100%; }
.btn-danger { color: #b8352f; border-color: #f0d5d3; }
.btn-danger:hover { background: var(--brand-soft); }
.btn .avatar { width: 18px; height: 18px; border-radius: 50%; object-fit: cover; margin-right: 1px; }

/* ---------- 卡片 ---------- */
.card {
  background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.card-pad { padding: 20px; }
.card-head {
  padding: 14px 20px; border-bottom: 1px solid var(--line-2);
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.card-head h3 { font-size: 15px; }

/* ---------- 表单 ---------- */
.field { margin-bottom: 15px; }
.field label { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 6px; font-weight: 550; }
.field .hint { font-size: 12px; color: var(--ink-3); margin-top: 5px; }
.input, .select, .textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line);
  border-radius: var(--radius-sm); background: #fff; outline: none; transition: .15s;
}
.input:focus, .select:focus, .textarea:focus {
  border-color: var(--brand); box-shadow: 0 0 0 3px rgba(184,53,47,.1);
}
.textarea { resize: vertical; min-height: 90px; line-height: 1.7; }
.input-sm { padding: 7px 10px; font-size: 13px; }

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 9px; border-radius: 20px; font-size: 12px;
  background: var(--line-2); color: var(--ink-2); white-space: nowrap;
}
.tag-brand { background: var(--brand-soft); color: var(--brand); }
.tag-ok { background: var(--ok-soft); color: var(--ok); }
.tag-warn { background: var(--warn-soft); color: var(--warn); }
.tag-info { background: var(--info-soft); color: var(--info); }
.tag-gold { background: #fdf8ec; color: var(--gold); }

/* ---------- 封面 ---------- */
.cover {
  aspect-ratio: 3/4; border-radius: var(--radius-sm); object-fit: cover;
  background: linear-gradient(135deg, #ece8e1, #ded9d0); width: 100%;
}
.cover-ph {
  aspect-ratio: 3/4; border-radius: var(--radius-sm); display: grid; place-items: center;
  background: linear-gradient(135deg, #efeae2, #e0dad0); color: #a9a29a;
  font-family: var(--serif); font-size: 26px; font-weight: 700; text-align: center; padding: 12px;
  line-height: 1.25; word-break: break-all; overflow: hidden;
}

/* ---------- 网格 ---------- */
.grid { display: grid; gap: 20px; }
.grid-books { grid-template-columns: repeat(auto-fill, minmax(158px, 1fr)); }
.grid-cards { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.grid-stats { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }

.book { display: block; }
.book .cover-ph, .book .cover { transition: .2s; }
.book:hover .cover-ph, .book:hover .cover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.book .bt { margin-top: 10px; font-weight: 600; font-size: 14px; line-height: 1.4;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.book .ba { font-size: 12px; color: var(--ink-3); margin-top: 3px; }
.book .bm { display: flex; align-items: center; gap: 6px; margin-top: 6px; flex-wrap: wrap; }

/* ---------- 统计块 ---------- */
.stat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.stat .k { font-size: 12px; color: var(--ink-3); }
.stat .v { font-size: 24px; font-weight: 700; margin-top: 4px; letter-spacing: -.02em; }
.stat .s { font-size: 12px; color: var(--ink-3); margin-top: 3px; }
.stat.accent { background: var(--brand-soft); border-color: #f5dcd9; }
.stat.accent .v { color: var(--brand); }

/* ---------- 表格 ---------- */
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th {
  text-align: left; padding: 10px 12px; background: var(--bg-soft);
  color: var(--ink-2); font-weight: 600; font-size: 12.5px;
  border-bottom: 1px solid var(--line); white-space: nowrap;
}
.table td { padding: 11px 12px; border-bottom: 1px solid var(--line-2); vertical-align: middle; }
.table tr:last-child td { border-bottom: none; }
.table tr:hover td { background: var(--bg-soft); }
.table-wrap { overflow-x: auto; }

/* ---------- 提示条 ---------- */
.alert { padding: 12px 14px; border-radius: var(--radius-sm); font-size: 13.5px; border: 1px solid; }
.alert-info { background: var(--info-soft); border-color: #d6e4f2; color: #1e4a72; }
.alert-warn { background: var(--warn-soft); border-color: #f2e2c4; color: #7d4e0d; }
.alert-ok { background: var(--ok-soft); border-color: #d3e9dc; color: #26603e; }
.alert-danger { background: var(--brand-soft); border-color: #f2d4d2; color: #8d211c; }

/* ---------- 空状态 ---------- */
.empty { text-align: center; padding: 56px 20px; color: var(--ink-3); }
.empty .ic { font-size: 34px; opacity: .35; margin-bottom: 10px; }

/* ---------- Toast ---------- */
#toast-host { position: fixed; top: 76px; left: 50%; transform: translateX(-50%); z-index: 9999;
  display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; }
.toast {
  background: #23262b; color: #fff; padding: 10px 18px; border-radius: 24px;
  font-size: 13.5px; box-shadow: var(--shadow-lg); animation: tin .25s ease; max-width: 88vw;
}
.toast.err { background: var(--brand); }
.toast.ok { background: var(--ok); }
@keyframes tin { from { opacity: 0; transform: translateY(-8px) } to { opacity: 1; transform: none } }

/* ---------- 弹窗 ---------- */
.modal-mask {
  position: fixed; inset: 0; background: rgba(24,26,29,.45); z-index: 500;
  display: grid; place-items: center; padding: 20px; animation: tin .15s ease;
}
.modal {
  background: #fff; border-radius: 14px; width: 100%; max-width: 460px;
  box-shadow: var(--shadow-lg); max-height: 88vh; overflow: auto;
}
.modal-head { padding: 18px 22px 0; font-weight: 650; font-size: 16px; }
.modal-body { padding: 16px 22px; }
.modal-foot { padding: 0 22px 20px; display: flex; gap: 10px; justify-content: flex-end; }

/* ---------- 阅读器 ---------- */
.reader {
  max-width: 720px; margin: 0 auto; padding: 32px 24px 80px;
}
.reader .r-title { font-family: var(--serif); font-size: 26px; text-align: center; margin-bottom: 6px; }
.reader .r-meta { text-align: center; color: var(--ink-3); font-size: 13px; margin-bottom: 30px; }
.reader .r-body { font-family: var(--serif); font-size: 18px; line-height: 2; color: #22252a; }
.reader .r-body p { margin: 0 0 1em; text-indent: 2em; }
.reader .r-body h2, .reader .r-body h3 { text-align: center; margin: 1.6em 0 .9em; text-indent: 0; }
.reader .r-body blockquote { margin: 1em 1.6em; color: var(--ink-2); font-style: italic; }
.reader .r-body hr { border: none; border-top: 1px solid var(--line); margin: 1.8em 0; }
.reader-nav { display: flex; gap: 12px; justify-content: space-between; margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line); }

/* 阅读偏好 */
.reader-toolbar { position: sticky; top: 60px; z-index: 40; background: rgba(255,255,255,.95);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.reader-toolbar .inner { max-width: 720px; margin: 0 auto; padding: 8px 24px;
  display: flex; align-items: center; gap: 10px; font-size: 13px; }
body.rf-dark { background: #1b1d20; }
body.rf-dark .reader { color: #c9cdd3; }
body.rf-dark .reader .r-body { color: #c9cdd3; }
body.rf-dark .r-title { color: #e8eaed; }
body.rf-dark .reader-toolbar, body.rf-dark .topbar { background: rgba(27,29,32,.95); border-color: #2c3035; }
body.rf-dark .reader-nav { border-color: #2c3035; }

/* ---------- 其它 ---------- */
.divider { height: 1px; background: var(--line-2); margin: 18px 0; }
.kv { display: flex; justify-content: space-between; padding: 7px 0; font-size: 13.5px; border-bottom: 1px dashed var(--line-2); }
.kv:last-child { border-bottom: none; }
.kv .k { color: var(--ink-2); }
.kv .v { font-weight: 600; }
.link { color: var(--brand); }
.link:hover { text-decoration: underline; }
.pill-tabs { display: flex; gap: 4px; background: var(--line-2); padding: 3px; border-radius: 10px; }
.pill-tabs button {
  padding: 6px 14px; border: none; background: transparent; border-radius: 7px;
  cursor: pointer; font-size: 13.5px; color: var(--ink-2); font-weight: 550;
}
.pill-tabs button.on { background: #fff; color: var(--ink); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.side { display: grid; grid-template-columns: 210px 1fr; gap: 24px; align-items: start; }
.side-nav { position: sticky; top: 84px; }
.side-nav a {
  display: block; padding: 9px 13px; border-radius: 8px; color: var(--ink-2);
  font-size: 14px; margin-bottom: 2px;
}
.side-nav a:hover { background: var(--line-2); }
.side-nav a.on { background: var(--brand-soft); color: var(--brand); font-weight: 600; }
.copybox {
  display: flex; align-items: center; gap: 8px; background: var(--bg-soft);
  border: 1px solid var(--line); border-radius: var(--radius-sm); padding: 8px 10px;
}
.copybox input {
  flex: 1; border: none; background: transparent; outline: none;
  font-size: 12.5px; font-family: var(--mono); color: var(--ink-2); min-width: 0;
}
.code-block {
  background: #23262b; color: #d8dde3; padding: 14px 16px; border-radius: 10px;
  font-family: var(--mono); font-size: 12.5px; line-height: 1.65; overflow-x: auto; white-space: pre;
}
.steps { counter-reset: s; }
.steps li { list-style: none; position: relative; padding-left: 38px; margin-bottom: 20px; }
.steps li::before {
  counter-increment: s; content: counter(s);
  position: absolute; left: 0; top: 0; width: 26px; height: 26px; border-radius: 50%;
  background: var(--brand-soft); color: var(--brand); display: grid; place-items: center;
  font-size: 13px; font-weight: 700;
}
footer.site { margin-top: 64px; padding: 28px 0; border-top: 1px solid var(--line); color: var(--ink-3); font-size: 13px; }
.spinner {
  width: 18px; height: 18px; border: 2px solid var(--line); border-top-color: var(--brand);
  border-radius: 50%; animation: sp .7s linear infinite; display: inline-block;
}
@keyframes sp { to { transform: rotate(360deg) } }

@media (max-width: 860px) {
  .side { grid-template-columns: 1fr; }
  .side-nav { position: static; display: flex; overflow-x: auto; gap: 4px; }
  .side-nav a { white-space: nowrap; margin: 0; }
  .nav { display: none; }
  .grid-books { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 14px; }
  .reader { padding: 20px 18px 60px; }
  .reader .r-body { font-size: 17px; }
}