/* ============================================================
   唐诗三百首 - 全局样式（宣纸墨韵 · 大气简约）
   ============================================================ */
:root {
  --paper: #f8f4ec;
  --paper-deep: #f0e9dc;
  --ink: #2b2823;
  --ink-soft: #5a534a;
  --ink-faint: #8b8378;
  --cinnabar: #a8382a;
  --cinnabar-soft: #c05a48;
  --verdigris: #4a5a56;
  --line: #ddd3c2;
  --white: #fffdf8;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.8;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--cinnabar); }

img { max-width: 100%; display: block; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }

/* ---------- 顶部横幅 ---------- */
.site-banner {
  border-bottom: 1px solid var(--line);
  background: rgba(248, 244, 236, .96);
  backdrop-filter: blur(6px);
}
.banner-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px;
}
.logo {
  display: flex; align-items: center; gap: 12px;
}
.logo-seal {
  width: 44px; height: 44px; flex: 0 0 44px;
  display: flex; align-items: center; justify-content: center;
  border: 2px solid var(--cinnabar);
  color: var(--cinnabar);
  font-size: 24px; font-weight: 700;
  border-radius: 6px;
  background: linear-gradient(145deg, #fdfaf3, #f3ecdd);
  box-shadow: 0 1px 3px rgba(120, 80, 50, .15);
  transform: rotate(-3deg);
}
.logo-text { line-height: 1.25; }
.logo-text .name { font-size: 22px; letter-spacing: 4px; font-weight: 700; }
.logo-text .sub { font-size: 11px; color: var(--ink-faint); letter-spacing: 2px; }

.main-nav ul {
  display: flex; list-style: none; gap: 6px;
}
.main-nav a {
  display: block; padding: 8px 16px;
  font-size: 15px; letter-spacing: 1px; color: var(--ink-soft);
  border-radius: 4px;
}
.main-nav a:hover,
.main-nav a.active { color: var(--cinnabar); background: rgba(168, 56, 42, .07); }
.drawer-head, .main-nav .nav-group { display: none; }
.nav-toggle {
  display: none; width: 42px; height: 42px;
  align-items: center; justify-content: center;
  background: var(--white); border: 1px solid var(--line); border-radius: 8px;
  font-size: 20px; line-height: 1; cursor: pointer; color: var(--ink);
  -webkit-tap-highlight-color: transparent;
}
.nav-toggle:active { background: var(--paper-deep); }

/* ---------- Hero ---------- */
.hero {
  text-align: center;
  padding: 88px 24px 72px;
  position: relative;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(168, 56, 42, .06), transparent 60%);
}
.hero-kicker { font-size: 13px; letter-spacing: 6px; color: var(--ink-faint); margin-bottom: 18px; }
.hero-title {
  font-size: clamp(40px, 7vw, 68px);
  font-weight: 700;
  letter-spacing: 10px;
  color: var(--ink);
  margin-bottom: 16px;
}
.hero-title .accent { color: var(--cinnabar); }
.hero-slogan { font-size: 16px; color: var(--ink-soft); letter-spacing: 3px; margin-bottom: 44px; }
.hero-quote {
  max-width: 560px; margin: 0 auto;
  font-size: 19px; color: var(--verdigris);
  border-top: 1px solid var(--line); border-bottom: 1px solid var(--line);
  padding: 18px 24px;
  min-height: 66px;
}
.hero-quote .q-source { display: block; margin-top: 8px; font-size: 13px; color: var(--ink-faint); letter-spacing: 2px; }

/* ---------- 区块 ---------- */
.section { padding: 56px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 30px;
}
.section-title {
  font-size: 24px; letter-spacing: 3px; font-weight: 700;
  position: relative; padding-left: 16px;
}
.section-title::before {
  content: ""; position: absolute; left: 0; top: 6px; bottom: 6px;
  width: 4px; background: var(--cinnabar); border-radius: 2px;
}
.section-more { font-size: 13px; color: var(--ink-faint); letter-spacing: 1px; }
.section-more:hover { color: var(--cinnabar); }

/* ---------- 体裁导航卡片 ---------- */
.genre-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 16px;
}
.genre-card {
  display: block;
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 20px;
  text-align: center;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.genre-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 24px rgba(80, 60, 30, .10);
  border-color: var(--cinnabar-soft);
}
.genre-card .g-name { font-size: 19px; letter-spacing: 3px; font-weight: 700; }
.genre-card .g-count { font-size: 12px; color: var(--ink-faint); margin-top: 6px; letter-spacing: 1px; }

/* ---------- 诗词卡片列表 ---------- */
.poem-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}
.poem-card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 22px 24px;
  display: flex; flex-direction: column; gap: 10px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.poem-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(80, 60, 30, .09);
}
.poem-card .p-title { font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.poem-card .p-meta { font-size: 13px; color: var(--ink-faint); display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.poem-card .p-first { font-size: 14px; color: var(--ink-soft); line-height: 1.7; }
.poem-card .p-first i { color: var(--ink-faint); font-style: normal; }
.poem-card .p-tags { margin-top: auto; display: flex; gap: 6px; flex-wrap: wrap; }

.tag {
  display: inline-block;
  font-size: 12px; line-height: 1;
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 20px;
  color: var(--ink-soft);
  background: var(--paper);
  letter-spacing: 1px;
}
a.tag:hover { border-color: var(--cinnabar); color: var(--cinnabar); }
.tag.rec { border-color: var(--cinnabar-soft); color: var(--cinnabar); background: rgba(168,56,42,.05); }

/* ---------- 详情页 ---------- */
.poem-detail {
  max-width: 760px; margin: 0 auto;
  padding: 72px 24px 88px;
  text-align: center;
}
.breadcrumb {
  font-size: 13px; color: var(--ink-faint);
  margin-bottom: 40px; letter-spacing: 1px;
}
.breadcrumb a:hover { color: var(--cinnabar); }
.breadcrumb .sep { margin: 0 8px; color: var(--line); }
.poem-detail .d-title {
  font-size: clamp(30px, 4.5vw, 44px);
  font-weight: 700; letter-spacing: 4px;
  margin-bottom: 10px;
}
.poem-detail .d-author {
  font-size: 17px; color: var(--ink-soft);
  letter-spacing: 3px; margin-bottom: 20px;
}
.poem-detail .d-tags { margin-bottom: 48px; display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.poem-body { margin: 0 auto; }
.poem-line {
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 2.1;
  letter-spacing: 2px;
  padding: 3px 0;
}
.d-famous {
  margin: 44px auto 0; max-width: 560px;
  border-top: 2px solid var(--cinnabar);
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
  color: var(--cinnabar);
  font-size: 19px; letter-spacing: 2px;
}
.d-famous .lb { display: block; font-size: 12px; color: var(--ink-faint); letter-spacing: 3px; margin-bottom: 8px; }

.d-extra { margin-top: 44px; text-align: left; }
.extra-block { margin-top: 26px; }
.extra-block h3 {
  font-size: 16px; letter-spacing: 2px; color: var(--verdigris);
  padding-bottom: 8px; margin-bottom: 12px;
  border-bottom: 1px solid var(--line);
  font-weight: 600;
}
.extra-block p, .extra-block div { font-size: 15px; color: var(--ink-soft); line-height: 2; white-space: pre-line; }

.d-nav {
  margin-top: 60px;
  display: flex; justify-content: space-between; gap: 20px;
  border-top: 1px solid var(--line); padding-top: 24px;
  font-size: 14px;
}
.d-nav a { color: var(--ink-faint); max-width: 45%; }
.d-nav a:hover { color: var(--cinnabar); }

/* ---------- 作者页 ---------- */
.author-head { text-align: center; padding: 64px 24px 40px; }
.author-head .a-name { font-size: 40px; letter-spacing: 6px; font-weight: 700; }
.author-head .a-dynasty { font-size: 14px; color: var(--ink-faint); letter-spacing: 3px; margin-top: 8px; }
.author-head .a-intro { max-width: 620px; margin: 24px auto 0; font-size: 15px; color: var(--ink-soft); line-height: 2; }

/* ---------- 列表页头部 ---------- */
.page-head { text-align: center; padding: 56px 24px 36px; }
.page-head h1 { font-size: 32px; letter-spacing: 4px; font-weight: 700; }
.page-head .desc { color: var(--ink-soft); font-size: 15px; margin-top: 12px; }

/* ---------- 搜索框 ---------- */
.search-box { max-width: 480px; margin: 0 auto; display: flex; gap: 10px; }
.search-box input {
  flex: 1; padding: 12px 16px;
  border: 1px solid var(--line); border-radius: 6px;
  background: var(--white); font-family: var(--serif); font-size: 15px;
  outline: none; color: var(--ink);
}
.search-box input:focus { border-color: var(--cinnabar-soft); }
.search-box button {
  padding: 12px 26px; border: none; border-radius: 6px;
  background: var(--cinnabar); color: #fff; font-size: 15px;
  letter-spacing: 2px; cursor: pointer; font-family: var(--serif);
}
.search-box button:hover { background: var(--cinnabar-soft); }

/* ---------- 分页 ---------- */
.pagination { display: flex; justify-content: center; gap: 8px; margin: 48px 0 8px; flex-wrap: wrap; }
.page-link {
  padding: 8px 15px; border: 1px solid var(--line); border-radius: 5px;
  font-size: 14px; color: var(--ink-soft); background: var(--white);
}
.page-link.active { background: var(--cinnabar); color: #fff; border-color: var(--cinnabar); }
.page-link:hover:not(.active) { border-color: var(--cinnabar); color: var(--cinnabar); }

/* ---------- 作者网格 ---------- */
.author-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 14px;
}
.author-card {
  background: var(--white); border: 1px solid var(--line); border-radius: 10px;
  padding: 18px; text-align: center;
  transition: transform .2s ease, box-shadow .2s ease;
}
.author-card:hover { transform: translateY(-3px); box-shadow: 0 8px 18px rgba(80,60,30,.09); }
.author-card .a-name { font-size: 17px; font-weight: 700; letter-spacing: 2px; }
.author-card .a-count { font-size: 12px; color: var(--ink-faint); margin-top: 4px; }

/* ---------- 关于页 ---------- */
.about-body { max-width: 720px; margin: 0 auto; padding: 24px 24px 72px; font-size: 15.5px; color: var(--ink-soft); }
.about-body h2 { color: var(--ink); font-size: 21px; letter-spacing: 2px; margin: 36px 0 14px; }
.about-body p { margin-bottom: 14px; line-height: 2.1; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 48px;
  text-align: center;
  color: var(--ink-faint); font-size: 13px; letter-spacing: 1px;
}
.site-footer .f-links { display: flex; justify-content: center; gap: 18px; flex-wrap: wrap; margin-bottom: 14px; }
.site-footer a:hover { color: var(--cinnabar); }
.site-footer .f-icp { margin-top: 8px; }

/* ---------- 空状态 ---------- */
.empty { text-align: center; padding: 60px 0; color: var(--ink-faint); font-size: 15px; }

/* ---------- 404 ---------- */
.error-page { text-align: center; padding: 120px 24px; }
.error-page .code { font-size: 90px; color: var(--line); font-weight: 700; letter-spacing: 8px; }
.error-page p { color: var(--ink-soft); margin: 16px 0 32px; }
.btn {
  display: inline-block; padding: 12px 30px;
  background: var(--cinnabar); color: #fff; border-radius: 6px;
  letter-spacing: 2px; font-size: 15px;
}
.btn:hover { background: var(--cinnabar-soft); color: #fff; }

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  /* 禁用 banner 模糊，避免 backdrop-filter 创建包含块导致抽屉无法全屏 */
  .site-banner { backdrop-filter: none; }
  .main-nav {
    display: block;
    position: fixed; top: 0; right: 0; bottom: 0;
    width: min(84vw, 360px);
    background: var(--white);
    border-left: 1px solid var(--line);
    box-shadow: -12px 0 32px rgba(80, 60, 30, .14);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .32s cubic-bezier(.22,.61,.36,1), visibility .32s;
    z-index: 100;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: max(28px, env(safe-area-inset-bottom));
  }
  .main-nav.open { transform: translateX(0); visibility: visible; }
  .drawer-head {
    display: flex; align-items: center; justify-content: space-between;
    padding: 16px 16px 12px 22px;
    border-bottom: 1px solid var(--line);
    position: sticky; top: 0;
    background: var(--white);
    z-index: 1;
  }
  .drawer-title { font-size: 17px; letter-spacing: 4px; font-weight: 700; color: var(--ink); }
  .drawer-close {
    width: 40px; height: 40px; flex: 0 0 40px;
    border: 1px solid var(--line); border-radius: 50%;
    background: var(--paper);
    font-size: 22px; line-height: 1; color: var(--ink-soft);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
  }
  .drawer-close:active { background: var(--paper-deep); }
  .main-nav ul {
    flex-direction: column;
    padding: 8px 0 32px;
  }
  .main-nav ul li + li { border-top: none; }
  .main-nav .nav-group {
    font-size: 12px; letter-spacing: 3px;
    color: var(--ink-faint);
    padding: 20px 22px 6px;
  }
  .main-nav a {
    display: block; padding: 14px 22px;
    font-size: 16px; letter-spacing: 2px;
    border-left: 3px solid transparent;
  }
  .main-nav a:hover,
  .main-nav a.active { color: var(--cinnabar); background: rgba(168, 56, 42, .06); border-left-color: var(--cinnabar); }
  .drawer-overlay {
    position: fixed; inset: 0;
    background: rgba(43, 40, 35, .48);
    opacity: 0; visibility: hidden;
    transition: opacity .32s ease, visibility .32s;
    z-index: 95;
    -webkit-tap-highlight-color: transparent;
  }
  .drawer-overlay.show { opacity: 1; visibility: visible; }
  body.nav-open { overflow: hidden; }
  .nav-toggle { display: flex; }
  .hero { padding: 64px 20px 52px; }
  .poem-detail { padding: 48px 18px 64px; }
  .section { padding: 44px 0; }
}

/* ---------- 移动端增强（平板 & 手机通用） ---------- */
/* 刘海屏安全区 */
@supports (padding: max(0px)) {
  .container { padding-left: max(24px, env(safe-area-inset-left)); padding-right: max(24px, env(safe-area-inset-right)); }
  .site-footer { padding-left: max(16px, env(safe-area-inset-left)); padding-right: max(16px, env(safe-area-inset-right)); padding-bottom: max(28px, env(safe-area-inset-bottom)); }
}

@media (max-width: 860px) {
  .banner-inner { height: 62px; }
  .logo-seal { width: 38px; height: 38px; flex-basis: 38px; font-size: 20px; }
  .logo-text .name { font-size: 19px; letter-spacing: 3px; }
  .logo-text .sub { display: none; }
  .hero-title { letter-spacing: 6px; }
  .hero { padding: 52px 18px 44px; }
  .section-title { font-size: 21px; }
  .genre-grid { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
  .poem-grid { grid-template-columns: 1fr; gap: 12px; }
  .poem-card { padding: 18px 20px; }
  .poem-detail .d-title { font-size: clamp(26px, 7vw, 34px); letter-spacing: 3px; }
  .poem-detail .d-tags { margin-bottom: 36px; }
  .d-nav { flex-direction: column; gap: 12px; }
  .d-nav a { max-width: 100%; }
  .pagination { gap: 6px; }
  .page-link { padding: 10px 14px; font-size: 15px; min-width: 42px; text-align: center; }
  .search-box { max-width: none; }
  .search-box button { padding: 12px 18px; }
  .author-grid { grid-template-columns: repeat(auto-fill, minmax(130px, 1fr)); gap: 10px; }
  .site-footer { padding: 32px 16px 88px; }
  .error-page .code { font-size: 64px; }
}

/* ---------- 小屏手机 ---------- */
@media (max-width: 480px) {
  .container { padding: 0 14px; }
  .hero { padding: 44px 14px 38px; }
  .hero-kicker { letter-spacing: 4px; font-size: 12px; }
  .hero-slogan { font-size: 14px; letter-spacing: 2px; }
  .hero-quote { font-size: 16px; padding: 14px 16px; }
  .section { padding: 36px 0; }
  .section-head { margin-bottom: 22px; }
  .genre-grid { grid-template-columns: repeat(2, 1fr); }
  .poem-line { font-size: 20px; letter-spacing: 1px; line-height: 2.2; }
  .poem-detail { padding: 36px 12px 56px; }
  .poem-detail .d-author { font-size: 15px; }
  .breadcrumb { font-size: 12px; margin-bottom: 28px; }
  .page-head { padding: 40px 14px 28px; }
  .page-head h1 { font-size: 26px; letter-spacing: 3px; }
  .search-box { flex-direction: column; gap: 8px; }
  .search-box button { width: 100%; }
  .author-head { padding: 44px 16px 32px; }
  .author-head .a-name { font-size: 30px; letter-spacing: 4px; }
  .about-body { padding: 16px 16px 56px; font-size: 15px; }
  .tag { font-size: 11px; padding: 5px 9px; }
  .site-footer .f-links { gap: 10px 14px; }
  .extra-block h3 { font-size: 15px; }
  .extra-block p, .extra-block div { font-size: 14.5px; }
}

/* ---------- 返回顶部（仅移动端显示） ---------- */
.back-top {
  position: fixed; right: 16px; bottom: max(22px, env(safe-area-inset-bottom));
  width: 44px; height: 44px; border-radius: 50%;
  background: rgba(168, 56, 42, .92); color: #fff;
  border: none; font-size: 20px; line-height: 1;
  display: none; align-items: center; justify-content: center;
  cursor: pointer; z-index: 99;
  box-shadow: 0 4px 14px rgba(120, 60, 40, .3);
  -webkit-tap-highlight-color: transparent;
  transition: opacity .2s ease;
}
.back-top.show { display: flex; }
@media (min-width: 861px) { .back-top { display: none !important; } }

/* ---------- 触控优化 ---------- */
@media (hover: none), (pointer: coarse) {
  a, button { -webkit-tap-highlight-color: transparent; }
  .genre-card, .poem-card, .author-card { transition: none; }
}

/* ---------- 尊重系统减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}