/* 归墟海（南京）文化传播有限公司 官网样式 */
:root {
  --paper: #f6f1e7;
  --paper-deep: #ece4d4;
  --ink: #1f1b16;
  --ink-soft: #4a4339;
  --muted: #8a7f6f;
  --seal: #a8322a;
  --line: #d8ccb6;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
  --wrap: 1120px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

/* 页头 */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(246, 241, 231, 0.94);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; }
.seal { width: 50px; height: 50px; object-fit: contain; }
.brand-name { font-family: var(--serif); font-size: 20px; font-weight: 700; letter-spacing: 2px; }
.brand-sub { display: block; font-size: 11px; color: var(--muted); letter-spacing: 1px; line-height: 1.2; }
.nav { display: flex; gap: 32px; font-size: 15px; }
.nav a { color: var(--ink-soft); padding: 4px 0; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.nav a:hover, .nav a.active { color: var(--seal); border-color: var(--seal); }
.nav-toggle { display: none; background: none; border: 0; font-size: 24px; cursor: pointer; color: var(--ink); }

/* 首屏 */
.hero { position: relative; padding: 120px 0 110px; overflow: hidden; border-bottom: 1px solid var(--line); }
/* 「国学」毛笔字水印（横排图片，自左向右） */
.hero::after {
  content: ""; position: absolute; right: 3%; top: 50%; transform: translateY(-50%);
  width: 600px; aspect-ratio: 1200 / 869; background: url(guoxue.png) no-repeat center / contain;
  opacity: .08; pointer-events: none;
}
.hero-eyebrow { color: var(--seal); letter-spacing: 6px; font-size: 14px; margin-bottom: 20px; }
.hero h1 { font-family: var(--serif); font-size: 52px; line-height: 1.35; letter-spacing: 4px; font-weight: 700; max-width: 720px; }
.hero p { margin-top: 28px; font-size: 18px; color: var(--ink-soft); max-width: 600px; }
.hero-actions { margin-top: 44px; display: flex; gap: 16px; flex-wrap: wrap; }
.btn { display: inline-block; padding: 12px 30px; border: 1px solid var(--ink); font-size: 15px; letter-spacing: 2px; transition: all .2s; }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--seal); border-color: var(--seal); }
.btn:not(.btn-primary):hover { color: var(--seal); border-color: var(--seal); }

/* 内页标题 */
.page-head { padding: 80px 0 60px; border-bottom: 1px solid var(--line); background: var(--paper-deep); }
.page-head h1 { font-family: var(--serif); font-size: 40px; letter-spacing: 6px; }
.page-head p { color: var(--muted); margin-top: 8px; letter-spacing: 2px; }

/* 区块 */
.section { padding: 96px 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-alt { background: var(--paper-deep); }
.section-title { display: flex; align-items: baseline; gap: 18px; margin-bottom: 48px; }
.section-title h2 { font-family: var(--serif); font-size: 32px; letter-spacing: 4px; }
.section-title span { color: var(--muted); font-size: 13px; letter-spacing: 3px; text-transform: uppercase; }
.lead { font-size: 17px; color: var(--ink-soft); max-width: 780px; }
.prose p { color: var(--ink-soft); margin-bottom: 1.2em; text-align: justify; }
.prose h3 { font-family: var(--serif); font-size: 22px; margin: 2em 0 .8em; letter-spacing: 2px; }
.prose ul { padding-left: 1.4em; color: var(--ink-soft); margin-bottom: 1.2em; }

.grid { display: grid; gap: 28px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card { background: #fbf8f2; border: 1px solid var(--line); padding: 36px 30px; transition: transform .2s, box-shadow .2s; }
.card:hover { transform: translateY(-3px); box-shadow: 0 10px 30px rgba(60, 40, 20, .08); }
.card-no { font-family: var(--serif); color: var(--seal); font-size: 14px; letter-spacing: 2px; }
.card h3 { font-family: var(--serif); font-size: 22px; margin: 10px 0 12px; letter-spacing: 2px; }
.card p { color: var(--ink-soft); font-size: 15px; }

.values { text-align: center; }
.values .v-char { font-family: var(--serif); font-size: 56px; color: var(--seal); line-height: 1.2; }
.values h4 { font-family: var(--serif); font-size: 18px; margin: 8px 0; letter-spacing: 2px; }
.values p { font-size: 14px; color: var(--ink-soft); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.quote-box {
  border-left: 3px solid var(--seal); padding: 28px 32px; background: #fbf8f2;
  font-family: var(--serif); font-size: 20px; line-height: 2; color: var(--ink);
}
.quote-box cite { display: block; margin-top: 12px; font-size: 14px; color: var(--muted); font-style: normal; }

.timeline { border-left: 1px solid var(--line); padding-left: 32px; }
.timeline li { list-style: none; position: relative; padding-bottom: 32px; }
.timeline li::before { content: ""; position: absolute; left: -38px; top: 10px; width: 11px; height: 11px; border-radius: 50%; background: var(--seal); }
.timeline strong { font-family: var(--serif); font-size: 18px; display: block; }
.timeline p { color: var(--ink-soft); font-size: 15px; }

/* 信息表 */
.info-table { width: 100%; border-collapse: collapse; background: #fbf8f2; border: 1px solid var(--line); }
.info-table th, .info-table td { padding: 18px 24px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.info-table th { width: 180px; font-weight: 500; color: var(--muted); background: var(--paper-deep); }

/* 页脚 */
.site-footer { background: var(--ink); color: #cfc6b6; padding: 64px 0 28px; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.5fr; gap: 48px; }
.site-footer h5 { color: #f6f1e7; font-family: var(--serif); font-size: 16px; letter-spacing: 2px; margin-bottom: 16px; }
.site-footer a:hover { color: #fff; }
.site-footer ul { list-style: none; }
.site-footer li { margin-bottom: 8px; }
.footer-bottom { margin-top: 48px; padding-top: 24px; border-top: 1px solid #3a342c; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px; color: #8f8574; font-size: 13px; }

/* 响应式 */
@media (max-width: 900px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .split, .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .hero h1 { font-size: 38px; }
  .hero::after { width: 420px; right: -2%; }
}
@media (max-width: 640px) {
  .nav-toggle { display: block; }
  .nav {
    display: none; position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; gap: 0; background: var(--paper); border-bottom: 1px solid var(--line);
  }
  .nav.open { display: flex; }
  .nav a { padding: 14px 24px; border-bottom: 1px solid var(--line); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero { padding: 80px 0; }
  .hero::after { width: 300px; right: -6%; opacity: .06; }
  .hero h1 { font-size: 30px; letter-spacing: 2px; }
  .section { padding: 64px 0; }
  .info-table th { width: 100px; padding: 14px; }
  .info-table td { padding: 14px; }
}