/* ==========================================================
   中国古代女子艺文数据库 · 全站样式
   设计语言：宣纸米白 × 绛红 × 描金 | 楷体/宋体 | 简约古典
   ========================================================== */

:root {
  /* —— 统一色彩体系 —— */
  --ink: #3b2f2a;            /* 墨色正文 */
  --ink-soft: #6d5f52;       /* 次级文字 */
  --crimson: #8a3344;        /* 绛红 · 主色（按钮/强调） */
  --crimson-deep: #6e2634;   /* 深绛 · 悬停 */
  --gold: #b08d57;           /* 描金 · 点缀线 */
  --gold-soft: #d3c5a8;      /* 浅金 · 边框 */
  --paper: #f8f4ea;          /* 宣纸底色 */
  --paper-deep: #f1ead9;     /* 深一度宣纸 */
  --white: #fffdf7;          /* 卡片底 */
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", "FangSong", serif;
  --kai: "Kaiti SC", "STKaiti", "KaiTi", "Noto Serif SC", serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--serif);
  color: var(--ink);
  background-color: var(--paper);
  /* 宣纸细纹 */
  background-image:
    radial-gradient(rgba(176, 141, 87, 0.05) 1px, transparent 1px),
    radial-gradient(rgba(138, 51, 68, 0.03) 1px, transparent 1px);
  background-size: 28px 28px, 34px 34px;
  background-position: 0 0, 14px 17px;
  line-height: 1.9;
  letter-spacing: 0.04em;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }

a { color: var(--crimson); text-decoration: none; transition: color .25s; }
a:hover { color: var(--crimson-deep); }

img { max-width: 100%; }

.container { width: min(1080px, 92%); margin: 0 auto; }

/* ============ 顶部导航 ============ */
.topbar {
  position: sticky; top: 0; z-index: 100;
  background: rgba(248, 244, 234, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--gold-soft);
}
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-seal { width: 40px; height: 40px; flex: none; }
.brand-name {
  font-family: var(--kai);
  font-size: 1.25rem; font-weight: 700; color: var(--crimson);
  letter-spacing: 0.12em;
}
.brand-name .en {
  display: block; font-family: var(--serif); font-size: .62rem; font-weight: 400;
  color: var(--ink-soft); letter-spacing: .18em; margin-top: 2px;
}
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  font-family: var(--kai);
  padding: 7px 16px; border-radius: 3px;
  color: var(--ink); font-size: 1.02rem; letter-spacing: 0.15em;
  border: 1px solid transparent;
}
.nav a:hover { color: var(--crimson); }
.nav a.active {
  color: var(--crimson); font-weight: 700;
  border-bottom: 2px solid var(--crimson);
}
.nav-toggle { display: none; }

/* ============ 子页面页头 ============ */
.page-banner {
  position: relative;
  border-bottom: 1px solid var(--gold-soft);
  background:
    linear-gradient(180deg, rgba(138,51,68,0.06), rgba(138,51,68,0.015) 70%, transparent),
    var(--paper);
  overflow: hidden;
}
/* 页头装饰云纹 */
.page-banner::before,
.page-banner::after {
  content: ""; position: absolute; pointer-events: none;
  background-repeat: no-repeat; opacity: .5;
}
.page-banner::before {
  left: -30px; bottom: -46px; width: 320px; height: 160px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 320 160'><g fill='none' stroke='%23b08d57' stroke-width='1.4' opacity='0.55'><path d='M10 130 q30 -50 70 -18 q22 18 44 -6 q26 -28 56 -10 q34 20 62 -8'/><path d='M40 150 q30 -46 66 -18 q24 18 46 -6'/><circle cx='28' cy='118' r='3'/><circle cx='196' cy='96' r='3'/><circle cx='258' cy='104' r='3'/></g></svg>");
}
.page-banner::after {
  right: -30px; top: -40px; width: 320px; height: 160px; transform: rotate(180deg);
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 320 160'><g fill='none' stroke='%23b08d57' stroke-width='1.4' opacity='0.55'><path d='M10 130 q30 -50 70 -18 q22 18 44 -6 q26 -28 56 -10 q34 20 62 -8'/><path d='M40 150 q30 -46 66 -18 q24 18 46 -6'/><circle cx='28' cy='118' r='3'/><circle cx='196' cy='96' r='3'/><circle cx='258' cy='104' r='3'/></g></svg>");
}
.banner-inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px; padding: 52px 0 44px; position: relative;
}
.banner-title { text-align: center; flex: 1; }
.banner-title h1 {
  font-family: var(--kai); font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  color: var(--crimson); letter-spacing: 0.22em; font-weight: 700;
}
.banner-title .sub {
  margin-top: 10px; font-size: .8rem; color: var(--ink-soft); letter-spacing: .5em;
  font-family: var(--serif);
}
.banner-title .rule {
  width: 120px; height: 14px; margin: 14px auto 0; position: relative;
}
.banner-title .rule::before,
.banner-title .rule::after {
  content: ""; position: absolute; top: 50%; height: 1px; width: 100%;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
}
.banner-title .rule::before { left: -110%; }
.banner-title .rule::after { right: -110%; }
.banner-title .rule i {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%) rotate(45deg);
  width: 8px; height: 8px; background: var(--gold);
}
/* 页头 LOGO 区（右上部） */
.banner-logos {
  display: flex; align-items: center; gap: 14px; flex: none;
}
.banner-logos img {
  height: 56px; width: auto; display: block;
  filter: drop-shadow(0 1px 2px rgba(59,47,42,.12));
}
.banner-logos .divider {
  width: 1px; height: 40px; background: linear-gradient(180deg, transparent, var(--gold-soft), transparent);
}
.banner-logos .logo-label {
  writing-mode: vertical-rl; font-size: .68rem; color: var(--ink-soft);
  letter-spacing: .3em; font-family: var(--kai);
}

/* ============ 通用区块 ============ */
.section { padding: 56px 0 64px; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 {
  font-family: var(--kai); font-size: 1.6rem; color: var(--ink);
  letter-spacing: .3em; display: inline-flex; align-items: center; gap: 16px;
}
.section-head h2::before, .section-head h2::after {
  content: ""; width: 48px; height: 1px; background: var(--gold);
}
.section-head p { color: var(--ink-soft); margin-top: 8px; font-size: .92rem; }

/* ============ 卡片 ============ */
.card {
  background: var(--white);
  border: 1px solid var(--gold-soft);
  border-radius: 4px;
  box-shadow: 0 4px 18px rgba(59, 47, 42, 0.06);
  transition: transform .3s, box-shadow .3s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 26px rgba(59, 47, 42, 0.12);
}

/* ============ 按钮（全站统一） ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: var(--kai); font-size: 1.05rem; letter-spacing: .25em;
  padding: 13px 42px 13px 46px; /* 右侧留字距补偿 */
  color: #fdfaf2; background: var(--crimson);
  border: 1px solid var(--crimson-deep);
  border-radius: 2px; cursor: pointer;
  position: relative;
  transition: background .25s, box-shadow .25s, transform .25s;
}
.btn:hover {
  background: var(--crimson-deep); color: #fdfaf2;
  box-shadow: 0 6px 16px rgba(110, 38, 52, 0.3);
  transform: translateY(-2px);
}
.btn.ghost {
  background: transparent; color: var(--crimson);
  border: 1px solid var(--crimson);
}
.btn.ghost:hover { background: rgba(138, 51, 68, 0.06); color: var(--crimson-deep); }
.btn .arrow { font-family: var(--serif); letter-spacing: 0; }

/* ============ 表格/表单占位 ============ */
.field-label {
  font-family: var(--kai); color: var(--ink-soft);
  letter-spacing: .2em; font-size: .9rem;
}

/* ============ 页脚 ============ */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--gold-soft);
  background: var(--paper-deep);
  padding: 30px 0 26px;
  text-align: center;
}
.site-footer .foot-name {
  font-family: var(--kai); color: var(--crimson); letter-spacing: .3em; font-size: .98rem;
}
.site-footer p { color: var(--ink-soft); font-size: .78rem; margin-top: 6px; letter-spacing: .1em; }
.site-footer a { color: var(--ink-soft); }
.site-footer a:hover { color: var(--crimson); }

/* ============ 响应式 ============ */
@media (max-width: 860px) {
  .banner-inner { flex-direction: column; }
  .banner-logos { order: -1; align-self: flex-end; }
  .nav { display: none; width: 100%; flex-direction: column; align-items: stretch; padding-bottom: 10px; }
  .nav a { padding: 10px 14px; border-bottom: none; }
  .nav a.active { border-bottom: none; background: rgba(138,51,68,.07); }
  .nav.open { display: flex; }
  .nav-toggle {
    display: inline-flex; flex-direction: column; justify-content: center; gap: 5px;
    width: 40px; height: 40px; padding: 8px; background: none; border: 1px solid var(--gold-soft);
    border-radius: 3px; cursor: pointer;
  }
  .nav-toggle span { display: block; height: 2px; background: var(--crimson); }
  .topbar-inner { flex-wrap: wrap; }
}