/* ========== 毛泽东诗词 · 革命红主题 ========== */
:root {
  --red: #9E1B1B;
  --deep: #6E1010;
  --paper: #F7F1E3;
  --card: #FFFDF6;
  --card-border: #E3D9C2;
  --ink: #241F1C;
  --ink-soft: #5F5E5A;
  --gold: #C9A227;
  --gold-soft: #F0D9B5;
  --cream-dim: #E8C9A8;
  --serif: "Kaiti SC", "KaiTi", "STKaiti", "楷体", "Noto Serif SC", serif;
  --sans: -apple-system, "PingFang SC", "Microsoft YaHei", sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
}

a { color: var(--red); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 0 20px; }

/* ---------- 顶部导航 ---------- */
.site-header {
  background: var(--deep);
  position: sticky; top: 0; z-index: 50;
  border-bottom: 2px solid var(--gold);
}
.site-header .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 56px;
}
.brand { display: flex; align-items: center; gap: 10px; }
.brand svg { width: 22px; height: 22px; }
.brand span {
  color: var(--paper); font-family: var(--serif);
  font-size: 19px; letter-spacing: 4px;
}
.nav { display: flex; gap: 26px; }
.nav a {
  color: var(--cream-dim); font-size: 14px; letter-spacing: 2px;
  padding-bottom: 3px; border-bottom: 1.5px solid transparent;
}
.nav a:hover { color: var(--paper); text-decoration: none; }
.nav a.active { color: var(--paper); border-bottom-color: var(--gold); }

/* ---------- 英雄区 ---------- */
.hero {
  position: relative;
  background: var(--red);
  text-align: center;
  padding: 84px 20px 110px;
  overflow: hidden;
}
.hero .star { width: 44px; height: 44px; margin-bottom: 18px; }
.hero h1 {
  color: var(--paper); font-family: var(--serif); font-weight: 500;
  font-size: 46px; letter-spacing: 14px; text-indent: 14px;
}
.hero .sub {
  color: var(--gold-soft); font-family: var(--serif);
  font-size: 24px; letter-spacing: 10px; text-indent: 10px; margin-top: 8px;
}
.hero .meta { color: var(--cream-dim); font-size: 13px; margin-top: 22px; letter-spacing: 1px; }
.hero-search {
  display: inline-flex; margin-top: 24px;
  background: var(--paper); border-radius: 24px; padding: 4px;
}
.hero-search input {
  border: none; background: transparent; outline: none;
  font-size: 14px; padding: 8px 18px; width: 260px; color: var(--ink);
}
.hero-search button {
  border: none; cursor: pointer; border-radius: 20px;
  background: var(--red); color: var(--paper);
  font-size: 14px; padding: 8px 22px; letter-spacing: 2px;
}
.hero-wave { position: absolute; left: 0; right: 0; bottom: -1px; width: 100%; height: 40px; display: block; }
#snow-canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }

/* ---------- 通用区块 ---------- */
.section { padding: 44px 0 8px; }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 20px;
}
.section-head h2 {
  font-family: var(--serif); font-weight: 500;
  font-size: 24px; color: var(--deep); letter-spacing: 4px;
}
.section-head h2::before {
  content: ""; display: inline-block; width: 6px; height: 20px;
  background: var(--red); margin-right: 10px; vertical-align: -3px;
}
.section-head .more { font-size: 13px; }

/* ---------- 诗卷卡片 ---------- */
.poem-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px;
}
.poem-card {
  position: relative; display: block;
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 8px; padding: 22px 20px 18px;
  transition: transform .18s ease, border-color .18s ease;
}
.poem-card:hover {
  transform: translateY(-4px); border-color: var(--red); text-decoration: none;
}
.poem-card h3 {
  font-family: var(--serif); font-weight: 500;
  font-size: 19px; color: var(--ink); letter-spacing: 1px;
  padding-right: 40px;
}
.poem-card .excerpt {
  margin-top: 10px; font-family: var(--serif);
  font-size: 14px; color: var(--ink-soft); line-height: 1.9;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.poem-card .foot {
  margin-top: 14px; display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--red);
}
.poem-card .foot .period { color: var(--ink-soft); }
.seal {
  position: absolute; top: 18px; right: 18px;
  width: 30px; height: 30px; border-radius: 5px;
  background: var(--red); color: var(--paper);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--serif); font-size: 15px;
  transform: rotate(3deg);
}

/* ---------- 首页时期速览 ---------- */
.period-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.period-item {
  display: block; background: var(--card);
  border: 1px solid var(--card-border); border-top: 3px solid var(--red);
  border-radius: 8px; padding: 16px;
}
.period-item:first-child { border-top-color: var(--gold); }
.period-item:hover { text-decoration: none; border-color: var(--red); }
.period-item h4 { font-size: 14px; color: var(--deep); font-weight: 500; }
.period-item .rng { font-size: 12px; color: var(--red); margin-top: 4px; }
.period-item .plc { font-size: 12px; color: var(--ink-soft); margin-top: 2px; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: 60px; background: var(--deep);
  padding: 22px 0; border-top: 2px solid var(--gold);
}
.site-footer .wrap {
  display: flex; justify-content: space-between; align-items: center;
  color: var(--cream-dim); font-size: 13px;
}
.site-footer a { color: var(--gold-soft); }
.site-footer .daily { font-family: var(--serif); letter-spacing: 1px; }

/* ---------- 诗卷页 ---------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 24px; }
.filter-bar a {
  font-size: 13px; padding: 6px 16px; border-radius: 16px;
  border: 1px solid var(--card-border); background: var(--card); color: var(--ink);
}
.filter-bar a:hover { text-decoration: none; border-color: var(--red); color: var(--red); }
.filter-bar a.on { background: var(--red); border-color: var(--red); color: var(--paper); }
.result-hint { font-size: 13px; color: var(--ink-soft); margin-bottom: 16px; }
.empty-tip {
  background: var(--card); border: 1px dashed var(--card-border);
  border-radius: 8px; padding: 40px; text-align: center; color: var(--ink-soft);
}

/* ---------- 详情页 ---------- */
.crumb {
  background: var(--deep); color: var(--cream-dim); font-size: 13px;
  padding: 10px 0;
}
.crumb .wrap { display: flex; justify-content: space-between; align-items: center; }
.crumb a { color: var(--cream-dim); }
.crumb a:hover { color: var(--paper); }
.crumb .cur { color: var(--paper); font-family: var(--serif); letter-spacing: 1px; }

.poem-layout {
  display: grid; grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
  gap: 20px; padding-top: 28px;
}
.scroll-card {
  position: relative; background: var(--card);
  border: 1px solid var(--card-border); border-radius: 8px; padding: 30px 28px;
}
.scroll-card .seal-big {
  position: absolute; top: 24px; right: 24px;
  width: 46px; height: 46px; border-radius: 8px; background: var(--red);
  color: var(--paper); font-family: var(--serif); font-size: 13px; line-height: 1.25;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  transform: rotate(3deg); box-shadow: 0 0 0 2px rgba(158,27,27,.15);
}
.scroll-card h1 {
  font-family: var(--serif); font-weight: 500;
  font-size: 30px; color: var(--deep); letter-spacing: 4px;
}
.scroll-card .where { font-size: 13px; color: var(--ink-soft); margin: 6px 0 20px; }

.poem-body {
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
  padding: 24px 10px; min-height: 220px;
}
/* 竖排模式 */
.poem-body.vertical {
  display: flex; flex-direction: row-reverse; justify-content: center;
  gap: 22px; overflow-x: auto;
}
.poem-body.vertical p {
  writing-mode: vertical-rl; font-family: var(--serif);
  font-size: 20px; letter-spacing: 8px; line-height: 2.1; color: var(--ink);
}
.poem-body.vertical p.famous { color: var(--red); }
/* 横排模式 */
.poem-body.horizontal { text-align: center; }
.poem-body.horizontal p {
  font-family: var(--serif); font-size: 18px; letter-spacing: 2px;
  line-height: 2.3; color: var(--ink);
}
.poem-body.horizontal p.famous { color: var(--red); }
/* 拼音 */
.poem-body .py { display: none; font-family: var(--sans); font-size: 11px; color: var(--ink-soft); letter-spacing: 1px; }
.poem-body.show-py .py { display: block; }
.poem-body.vertical.show-py p { line-height: 1.6; }

.poem-tools { display: flex; gap: 10px; justify-content: center; margin-top: 18px; }
.poem-tools button {
  cursor: pointer; font-size: 13px; padding: 6px 16px; border-radius: 16px;
  border: 1px solid var(--card-border); background: transparent; color: var(--ink-soft);
}
.poem-tools button:hover { border-color: var(--red); color: var(--red); }
.poem-tools button.on { border-color: var(--red); color: var(--red); }

.side-col { display: flex; flex-direction: column; gap: 16px; }
.side-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 8px; padding: 16px 18px;
}
.side-card h3 {
  font-family: var(--serif); font-weight: 500;
  font-size: 17px; color: var(--deep); margin-bottom: 8px; letter-spacing: 2px;
}
.side-card p, .side-card li { font-size: 13.5px; color: var(--ink-soft); line-height: 1.9; }
.side-card ul { list-style: none; }
.side-card li b { color: var(--ink); font-weight: 500; }
.side-card.red { background: var(--red); border-color: var(--red); }
.side-card.red h3 { color: var(--gold-soft); }
.side-card.red p { color: var(--paper); }

.related { padding-top: 36px; }
.related-chips { display: flex; flex-wrap: wrap; gap: 10px; }
.related-chips a {
  font-family: var(--serif); font-size: 14px; color: var(--ink);
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 18px; padding: 8px 18px;
}
.related-chips a:hover { border-color: var(--red); color: var(--red); text-decoration: none; }

/* ---------- 生平足迹 ---------- */
.timeline { position: relative; padding: 10px 0 30px 34px; }
.timeline::before {
  content: ""; position: absolute; left: 10px; top: 0; bottom: 0;
  width: 2px; background: var(--card-border);
}
.tl-item { position: relative; margin-bottom: 26px; }
.tl-item::before {
  content: ""; position: absolute; left: -30px; top: 8px;
  width: 12px; height: 12px; border-radius: 50%;
  background: var(--red); box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px var(--card-border);
}
.tl-item .tl-year {
  font-family: var(--serif); font-size: 20px; color: var(--red); font-weight: 500;
}
.tl-item .tl-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 8px; padding: 14px 18px; margin-top: 6px;
}
.tl-item .tl-card h4 { font-size: 15px; font-weight: 500; color: var(--deep); }
.tl-item .tl-card h4 span { font-size: 12px; color: var(--ink-soft); font-weight: 400; margin-left: 8px; }
.tl-item .tl-card p { font-size: 13.5px; color: var(--ink-soft); margin-top: 6px; }
.tl-item .tl-card a { font-size: 13px; }

/* ---------- 书法手迹 ---------- */
.calli-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.calli-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 8px; overflow: hidden;
}
.calli-view {
  background: var(--deep); min-height: 240px;
  display: flex; align-items: center; justify-content: center;
  padding: 24px; position: relative;
}
.calli-view img { max-width: 100%; max-height: 280px; display: block; }
.calli-vertical {
  display: flex; flex-direction: row-reverse; gap: 16px;
}
.calli-vertical span {
  writing-mode: vertical-rl; font-family: var(--serif);
  color: var(--gold-soft); font-size: 24px; letter-spacing: 10px;
}
.calli-view .seal { position: absolute; bottom: 16px; left: 16px; top: auto; right: auto; }
.calli-info { padding: 14px 18px; }
.calli-info h4 { font-family: var(--serif); font-size: 16px; color: var(--deep); font-weight: 500; }
.calli-info p { font-size: 13px; color: var(--ink-soft); margin-top: 6px; }

/* ---------- 页头横幅（内页） ---------- */
.page-banner {
  background: var(--red); padding: 40px 0 54px; text-align: center;
  position: relative; overflow: hidden;
}
.page-banner h1 {
  color: var(--paper); font-family: var(--serif); font-weight: 500;
  font-size: 32px; letter-spacing: 10px; text-indent: 10px;
}
.page-banner p { color: var(--cream-dim); font-size: 13px; margin-top: 10px; letter-spacing: 2px; }

/* ---------- 后台 ---------- */
.admin-body { background: #f3efe6; min-height: 100vh; }
.admin-bar { background: var(--deep); color: var(--paper); padding: 12px 0; }
.admin-bar .wrap { display: flex; justify-content: space-between; align-items: center; }
.admin-bar a { color: var(--cream-dim); font-size: 13px; margin-left: 16px; }
.admin-tabs { display: flex; gap: 8px; margin: 24px 0; }
.admin-tabs a {
  padding: 8px 20px; border-radius: 6px; font-size: 14px;
  background: var(--card); border: 1px solid var(--card-border); color: var(--ink);
}
.admin-tabs a.on { background: var(--red); color: var(--paper); border-color: var(--red); }
.admin-table {
  width: 100%; border-collapse: collapse; background: var(--card);
  border: 1px solid var(--card-border); border-radius: 8px; overflow: hidden;
}
.admin-table th, .admin-table td {
  text-align: left; font-size: 13.5px; padding: 10px 14px;
  border-bottom: 1px solid var(--card-border);
}
.admin-table th { background: #efe8d5; color: var(--deep); font-weight: 500; }
.admin-table tr:last-child td { border-bottom: none; }
.btn {
  display: inline-block; cursor: pointer; border: none; font-size: 13px;
  padding: 7px 16px; border-radius: 6px; background: var(--red); color: var(--paper);
}
.btn.ghost { background: transparent; border: 1px solid var(--card-border); color: var(--ink); }
.btn.sm { padding: 4px 10px; font-size: 12px; }
.btn.danger { background: #b91c1c; }
.form-card {
  background: var(--card); border: 1px solid var(--card-border);
  border-radius: 8px; padding: 24px; max-width: 760px;
}
.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13px; color: var(--ink-soft); margin-bottom: 6px; }
.form-row input[type=text], .form-row input[type=password], .form-row input[type=number],
.form-row select, .form-row textarea {
  width: 100%; border: 1px solid var(--card-border); border-radius: 6px;
  padding: 9px 12px; font-size: 14px; font-family: inherit; background: #fff;
  color: var(--ink); outline: none;
}
.form-row textarea { min-height: 120px; resize: vertical; }
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { border-color: var(--red); }
.form-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.login-box {
  max-width: 360px; margin: 90px auto; background: var(--card);
  border: 1px solid var(--card-border); border-radius: 10px; padding: 32px;
}
.login-box h1 {
  font-family: var(--serif); font-weight: 500; font-size: 22px;
  color: var(--deep); text-align: center; letter-spacing: 4px; margin-bottom: 24px;
}
.login-box .btn { width: 100%; padding: 10px; font-size: 15px; letter-spacing: 4px; }
.flash {
  border-radius: 6px; padding: 10px 14px; font-size: 13px; margin-bottom: 18px;
  background: #fdecea; color: #a32d2d; border: 1px solid #f5c4c4;
}
.flash.ok { background: #eef7ea; color: #3b6d11; border-color: #cfe6bd; }
.help { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  .poem-grid { grid-template-columns: repeat(2, 1fr); }
  .period-grid { grid-template-columns: repeat(2, 1fr); }
  .poem-layout { grid-template-columns: 1fr; }
  .calli-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 32px; letter-spacing: 8px; }
  .nav { gap: 14px; }
  .nav a { font-size: 13px; letter-spacing: 1px; }
}
@media (max-width: 560px) {
  .poem-grid { grid-template-columns: 1fr; }
  .period-grid { grid-template-columns: 1fr; }
  .form-cols { grid-template-columns: 1fr; }
  .hero { padding: 60px 16px 90px; }
  .hero h1 { font-size: 26px; letter-spacing: 5px; }
  .hero .sub { font-size: 18px; letter-spacing: 6px; }
}