/* ==========================================================
   李忠翔 · 个人主页 —— 门户与「关于我」共用样式
   色板与四周年纪念页保持一致，使全站是一套视觉
   ========================================================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #faf8f5;
  --text: #3d3d3d;
  --text-light: #8a8580;
  --accent: #c47f6b;
  --accent-light: #dba99b;
  --sage: #a8b5a2;
  --sage-light: #c5cfc0;
  --beige: #e8e0d5;
  --white: #ffffff;
  --shadow: 0 2px 20px rgba(0, 0, 0, 0.06);
  --radius: 12px;
  --max-width: 860px;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-title: Georgia, "Noto Serif SC", "STSong", serif;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.9;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* ---------- 导航 ---------- */
.site-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 14px 24px;
  display: flex; justify-content: center; align-items: center; gap: 22px;
  background: rgba(250, 248, 245, 0.86);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--beige);
  flex-wrap: wrap;
}
/* 站名（品牌）。
   ⚠️ 特异性能必须压过下面的 .site-nav a（0,1,1），否则 color / font-size /
   letter-spacing 会被它整体覆盖，站名退化成又一个普通导航项——那正是
   「李忠翔 首页」看着像两个重复项、彼此打架的根因。这里用双类选择器（0,2,0）。 */
.site-nav .site-nav__brand {
  font-family: var(--font-title);
  font-size: 1.05rem; letter-spacing: 0.26em;
  color: var(--text); text-decoration: none;
  padding-right: 22px;
  border-right: 1px solid var(--beige);
  transition: color 0.3s;
}
.site-nav .site-nav__brand:hover { color: var(--accent); }
.site-nav__links { display: flex; gap: 22px; flex-wrap: wrap; justify-content: center; }
.site-nav a {
  color: var(--text-light); text-decoration: none;
  font-size: 0.85rem; letter-spacing: 1px;
  transition: color 0.3s;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--accent); }

/* ---------- Hero ---------- */
.site-hero {
  min-height: 92vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
}
.site-hero::after {
  content: ""; position: absolute; bottom: 0; left: 50%;
  transform: translateX(-50%);
  width: 1px; height: 72px;
  background: linear-gradient(to bottom, var(--beige), transparent);
}
.site-hero__title {
  font-family: var(--font-title);
  font-size: clamp(2.6rem, 8vw, 4.6rem);
  font-weight: 400; letter-spacing: 0.22em;
  text-indent: 0.22em;           /* 抵消尾字后的字距，视觉居中 */
  color: var(--text);
  margin-bottom: 22px;
}
.site-hero__subtitle {
  font-size: clamp(1rem, 2.4vw, 1.2rem);
  font-weight: 300; letter-spacing: 0.32em; text-indent: 0.32em;
  color: var(--accent);
  margin-bottom: 26px;
}
.site-hero__rule {
  width: 56px; height: 1px; background: var(--beige);
  margin: 0 auto;
}

/* ---------- 入口卡片 ---------- */
.entry-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 24px 140px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
/* 只有一个入口时的收窄布局：避免单张卡片被拉成一整幅宽横幅 */
.entry-grid--single {
  grid-template-columns: minmax(0, 520px);
  justify-content: center;
}
.entry-card {
  display: block;
  padding: 42px 34px;
  border: 1px solid var(--beige);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  text-decoration: none; color: inherit;
  transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              box-shadow 0.4s, border-color 0.4s;
}
.entry-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-light);
  box-shadow: 0 10px 34px rgba(196, 127, 107, 0.16);
}
.entry-card__num {
  font-family: var(--font-title);
  font-size: 0.75rem; letter-spacing: 0.3em;
  color: var(--accent-light);
  display: block; margin-bottom: 18px;
}
.entry-card__title {
  font-family: var(--font-title);
  font-size: 1.5rem; font-weight: 400; letter-spacing: 0.14em;
  margin-bottom: 14px;
}
.entry-card__desc {
  font-size: 0.9rem; color: var(--text-light);
  line-height: 1.95; letter-spacing: 0.04em;
}
.entry-card__more {
  display: inline-block; margin-top: 22px;
  font-size: 0.8rem; letter-spacing: 0.2em;
  color: var(--accent);
}
.entry-card--sage .entry-card__num { color: var(--sage); }
.entry-card--sage:hover { border-color: var(--sage-light); box-shadow: 0 10px 34px rgba(168, 181, 162, 0.2); }
.entry-card--sage .entry-card__more { color: var(--sage); }

/* ---------- 内容页通用 ---------- */
.page-head {
  padding: 150px 24px 72px;
  max-width: var(--max-width); margin: 0 auto;
  text-align: center;
}
.page-head h1 {
  font-family: var(--font-title);
  font-size: clamp(1.9rem, 5vw, 2.8rem);
  font-weight: 400; letter-spacing: 0.2em; text-indent: 0.2em;
  margin-bottom: 18px;
}
.page-head p {
  font-size: 0.92rem; letter-spacing: 0.14em; color: var(--text-light);
}

.page-section {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 72px 24px;
  border-top: 1px solid var(--beige);
}
.page-section:first-of-type { border-top: none; }
.page-section__num {
  display: block;
  font-family: var(--font-title);
  font-size: 0.75rem; letter-spacing: 0.34em;
  color: var(--accent-light);
  margin-bottom: 14px;
}
.page-section__title {
  font-family: var(--font-title);
  font-size: clamp(1.35rem, 3.6vw, 1.75rem);
  font-weight: 400; letter-spacing: 0.16em;
  margin-bottom: 30px;
}
.prose p {
  font-size: 1rem; line-height: 2.15;
  color: var(--text); letter-spacing: 0.03em;
  margin-bottom: 18px;
}
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--accent); font-weight: 600; }
.prose em { font-style: normal; color: var(--sage); }

/* 引句（章节内） */
.pull-quote {
  margin: 28px 0;
  padding: 20px 26px;
  border-left: 2px solid var(--accent-light);
  background: rgba(232, 224, 213, 0.34);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-family: var(--font-title);
  font-size: 1rem; letter-spacing: 0.06em; line-height: 2;
  color: var(--text);
}
.pull-quote cite {
  display: block; margin-top: 10px;
  font-family: var(--font-body);
  font-size: 0.78rem; letter-spacing: 0.16em;
  color: var(--text-light); font-style: normal;
}

/* 「三级跳」这类递进条目 */
.step-list { display: grid; gap: 18px; margin: 26px 0; }
.step-item {
  padding: 24px 26px;
  border: 1px solid var(--beige);
  border-radius: var(--radius);
  background: var(--white);
}
.step-item__label {
  font-family: var(--font-title);
  font-size: 0.8rem; letter-spacing: 0.24em;
  color: var(--accent); display: block; margin-bottom: 8px;
}
.step-item__title {
  font-size: 1.02rem; font-weight: 600;
  letter-spacing: 0.1em; margin-bottom: 10px;
}
.step-item p { font-size: 0.92rem; color: var(--text-light); line-height: 2; margin: 0; }

/* 三重坐标系 */
.coord-grid {
  display: grid; gap: 18px; margin: 26px 0;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}
.coord-item {
  padding: 26px 22px; text-align: center;
  border: 1px solid var(--beige); border-radius: var(--radius);
  background: var(--white);
}
.coord-item__when {
  font-family: var(--font-title);
  font-size: 0.76rem; letter-spacing: 0.26em;
  color: var(--accent-light); display: block; margin-bottom: 12px;
}
.coord-item__where {
  font-size: 1.02rem; font-weight: 600; letter-spacing: 0.1em;
  margin-bottom: 10px;
}
.coord-item__why { font-size: 0.86rem; color: var(--text-light); line-height: 1.9; }

/* 结语 */
.page-outro {
  padding: 110px 24px 130px;
  text-align: center;
  background: linear-gradient(to bottom, transparent, rgba(232, 224, 213, 0.42));
}
.page-outro__inner { max-width: 640px; margin: 0 auto; }
.page-outro p {
  font-family: var(--font-title);
  font-size: clamp(1.05rem, 2.8vw, 1.32rem);
  letter-spacing: 0.12em; line-height: 2.2;
  color: var(--text);
}
.page-outro .page-outro__seal {
  margin-top: 34px; font-size: 1.5rem;
  color: var(--accent); letter-spacing: 0.4em; text-indent: 0.4em;
}
/* 结语里的小字落款句（选择器需压过 .page-outro p） */
.page-outro .page-outro__line {
  margin-top: 30px;
  font-family: var(--font-body);
  font-size: 0.92rem; letter-spacing: 0.26em; text-indent: 0.26em;
  color: var(--accent);
}

/* ---------- 页脚 ---------- */
.site-footer {
  padding: 44px 24px;
  text-align: center;
  border-top: 1px solid var(--beige);
  color: var(--text-light);
  font-size: 0.78rem; letter-spacing: 0.18em;
}
.site-footer a { color: var(--text-light); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }

/* ---------- 滚动显现 ---------- */
.reveal {
  opacity: 0; transform: translateY(26px);
  transition: opacity 0.85s ease, transform 0.85s ease;
}
.reveal.is-visible { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- 响应式 ---------- */
@media (max-width: 767px) {
  .site-nav { padding: 12px 16px; gap: 14px; }
  .site-nav .site-nav__brand { font-size: 0.98rem; letter-spacing: 0.18em; padding-right: 14px; }
  .site-nav__links { gap: 16px; }
  .site-hero { min-height: 86vh; padding: 104px 20px 64px; }
  .entry-grid { padding: 12px 20px 100px; gap: 18px; }
  .entry-card { padding: 34px 26px; }
  .page-head { padding: 124px 20px 56px; }
  .page-section { padding: 56px 20px; }
  .page-outro { padding: 84px 20px 100px; }
}