/* =========================================================
   酒杯情怀 · 全局样式
   双主题（暗色默认 / 亮色可选）· 响应式 · 文学排版
   配色：琥珀金 + 赭石 + 暖墨，呼应"酒"的温润与深沉
   ========================================================= */

:root {
  /* 字体 */
  --font-kai: "Kaiti SC", "STKaiti", "KaiTi", "楷体", "Noto Serif SC", serif;
  --font-serif: "Songti SC", "STSong", "SimSun", "Noto Serif SC", "Source Han Serif SC", serif;
  --font-sans: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;

  /* 暗色（默认） */
  --bg-0: #140f0b;
  --bg-1: #1b1410;
  --bg-2: #241a13;
  --surface: #221913;
  --surface-2: #2c2018;
  --border: #3a2c20;
  --text: #ece2d4;
  --text-soft: #c9bba9;
  --muted: #9a8a78;
  --gold: #d6a24c;
  --gold-soft: #e6bd72;
  --bronze: #c07b3a;
  --wine: #b15a36;
  --shadow: 0 18px 50px -20px rgba(0, 0, 0, 0.75);
  --ring: rgba(214, 162, 76, 0.55);
}

:root[data-theme="light"] {
  --bg-0: #f3e9d8;
  --bg-1: #f7efe1;
  --bg-2: #fbf5ea;
  --surface: #fffaf0;
  --surface-2: #fdf3e4;
  --border: #e3d3ba;
  --text: #2c2017;
  --text-soft: #4d3e30;
  --muted: #8a7866;
  --gold: #a9762a;
  --gold-soft: #c08a2e;
  --bronze: #a9622a;
  --wine: #9c4a2c;
  --shadow: 0 18px 44px -22px rgba(120, 80, 30, 0.45);
  --ring: rgba(169, 118, 42, 0.45);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-serif);
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(214, 162, 76, 0.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(177, 90, 54, 0.10), transparent 55%),
    linear-gradient(180deg, var(--bg-1), var(--bg-0));
  background-attachment: fixed;
  line-height: 1.85;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background-color .35s ease, color .35s ease;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-soft); }

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

.container { width: min(1120px, 92vw); margin-inline: auto; }

/* ---------- 顶部阅读进度条 ---------- */
#progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 0%;
  background: linear-gradient(90deg, var(--bronze), var(--gold), var(--gold-soft));
  z-index: 120; transition: width .12s linear;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  backdrop-filter: saturate(140%) blur(10px);
  background: color-mix(in srgb, var(--bg-1) 82%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 66px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-kai); font-size: 22px; font-weight: 700;
  color: var(--text); letter-spacing: 2px;
}
.brand .mark { width: 30px; height: 30px; flex: none; }
.brand small { font-family: var(--font-sans); font-size: 11px; color: var(--muted); letter-spacing: 1px; display:block; margin-top:-4px;}

.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; margin: 0; padding: 0; }
.nav-links a {
  color: var(--text-soft); padding: 8px 14px; border-radius: 999px;
  font-family: var(--font-sans); font-size: 15px; letter-spacing: .5px;
  transition: color .2s, background .2s;
}
.nav-links a:hover { color: var(--gold); background: color-mix(in srgb, var(--gold) 12%, transparent); }
.nav-links a.active { color: var(--gold); }

.nav-tools { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border);
  background: transparent; color: var(--text-soft); cursor: pointer;
  display: grid; place-items: center; transition: .2s;
}
.icon-btn:hover { color: var(--gold); border-color: var(--gold); }
.hamburger { display: none; }

/* ---------- 移动端菜单 ---------- */
@media (max-width: 860px) {
  .hamburger { display: grid; }
  .nav-links {
    position: fixed; inset: 66px 0 auto 0; flex-direction: column; gap: 0;
    background: var(--bg-2); border-bottom: 1px solid var(--border);
    padding: 10px 6vw 18px; transform: translateY(-130%); transition: transform .28s ease;
    box-shadow: var(--shadow);
  }
  .nav-links.open { transform: translateY(0); }
  .nav-links a { width: 100%; border-radius: 10px; padding: 13px 16px; font-size: 17px; }
}

/* ---------- HERO ---------- */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(54px, 9vw, 110px) 0 clamp(40px, 6vw, 70px);
}
.hero-grid {
  display: grid; grid-template-columns: 1.1fr .9fr; gap: 30px; align-items: center;
}
.hero h1 {
  font-family: var(--font-kai); font-weight: 700;
  font-size: clamp(46px, 8.5vw, 92px); line-height: 1.04; margin: 0 0 18px;
  letter-spacing: 4px;
  background: linear-gradient(180deg, var(--gold-soft), var(--bronze));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero .lead {
  font-size: clamp(17px, 2.2vw, 20px); color: var(--text-soft); max-width: 30em;
}
.hero .poem {
  margin: 26px 0; padding-left: 16px; border-left: 3px solid var(--gold);
  font-family: var(--font-kai); color: var(--gold-soft); font-size: clamp(18px, 2.4vw, 22px);
  line-height: 1.9;
}
.hero .cta { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 14px; }
.hero-art { display: grid; place-items: center; }
.hero-art svg { width: min(360px, 80%); height: auto; filter: drop-shadow(0 20px 40px rgba(0,0,0,.5)); }

.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 22px; border-radius: 999px; font-family: var(--font-sans);
  font-size: 15px; letter-spacing: .5px; cursor: pointer; border: 1px solid var(--gold);
  background: linear-gradient(180deg, var(--gold), var(--bronze)); color: #1a120a;
  font-weight: 600; transition: transform .15s, box-shadow .2s;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 12px 28px -10px var(--ring); color:#1a120a;}
.btn.ghost { background: transparent; color: var(--gold); }
.btn.ghost:hover { background: color-mix(in srgb, var(--gold) 12%, transparent); color: var(--gold-soft); }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero .lead, .hero .poem { margin-inline: auto; }
  .hero .cta { justify-content: center; }
  .hero-art { order: -1; }
}

/* ---------- 区块标题 ---------- */
.section { padding: clamp(46px, 7vw, 84px) 0; }
.section-head { text-align: center; margin-bottom: 38px; }
.section-head .eyebrow {
  font-family: var(--font-sans); font-size: 13px; letter-spacing: 4px;
  color: var(--gold); text-transform: uppercase;
}
.section-head h2 {
  font-family: var(--font-kai); font-size: clamp(30px, 5vw, 46px);
  margin: 8px 0 6px; letter-spacing: 3px;
}
.section-head p { color: var(--muted); max-width: 40em; margin: 6px auto 0; }

/* ---------- 三栏卡片 ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card {
  position: relative; background: linear-gradient(180deg, var(--surface), var(--bg-2));
  border: 1px solid var(--border); border-radius: 18px; padding: 28px 24px 26px;
  display: flex; flex-direction: column; gap: 12px; overflow: hidden;
  transition: transform .22s ease, border-color .22s, box-shadow .22s;
}
.card::before {
  content: ""; position: absolute; inset: 0 0 auto 0; height: 4px;
  background: var(--accent, var(--gold));
}
.card:hover { transform: translateY(-6px); border-color: var(--accent, var(--gold)); box-shadow: var(--shadow); }
.card .ic { width: 52px; height: 52px; color: var(--accent, var(--gold)); }
.card h3 { font-family: var(--font-kai); font-size: 24px; margin: 4px 0 0; letter-spacing: 2px; }
.card p { color: var(--text-soft); font-size: 15px; margin: 0; flex: 1; }
.card .more { font-family: var(--font-sans); font-size: 14px; color: var(--gold); display: inline-flex; gap: 6px; align-items: center; }
.card:hover .more { gap: 10px; }

@media (max-width: 860px) { .cards { grid-template-columns: 1fr; } }

/* ---------- 引文横幅 ---------- */
.quote-banner {
  background: linear-gradient(135deg, color-mix(in srgb, var(--bronze) 20%, var(--bg-2)), var(--bg-2));
  border: 1px solid var(--border); border-radius: 20px;
  padding: clamp(30px, 5vw, 54px); text-align: center;
}
.quote-banner q {
  font-family: var(--font-kai); font-size: clamp(20px, 3.4vw, 30px); color: var(--gold-soft);
  line-height: 1.7; quotes: none;
}
.quote-banner .src { display:block; margin-top: 16px; color: var(--muted); font-family: var(--font-sans); font-size: 14px; letter-spacing: 1px; }

/* ---------- 子页面 HERO ---------- */
.page-hero {
  padding: clamp(40px, 6vw, 72px) 0 clamp(20px, 3vw, 30px);
  border-bottom: 1px solid var(--border);
  background: radial-gradient(800px 300px at 50% -40%, color-mix(in srgb, var(--bronze) 22%, transparent), transparent 70%);
}
.page-hero .eyebrow { font-family: var(--font-sans); letter-spacing: 4px; color: var(--gold); font-size: 13px; }
.page-hero h1 {
  font-family: var(--font-kai); font-size: clamp(34px, 6vw, 60px); margin: 8px 0 10px; letter-spacing: 3px;
}
.page-hero p { color: var(--text-soft); max-width: 46em; }
.breadcrumb { font-family: var(--font-sans); font-size: 13px; color: var(--muted); margin-bottom: 10px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--gold); }

/* ---------- 阅读布局（目录 + 文章） ---------- */
.reading { display: grid; grid-template-columns: 240px 1fr; gap: 40px; padding: clamp(36px,5vw,64px) 0; }
.toc {
  position: sticky; top: 86px; align-self: start; height: max-content;
  border-left: 2px solid var(--border); padding-left: 16px;
}
.toc h4 { font-family: var(--font-sans); font-size: 12px; letter-spacing: 2px; color: var(--muted); text-transform: uppercase; margin: 0 0 12px; }
.toc a {
  display: block; color: var(--text-soft); font-size: 15px; padding: 7px 0;
  border-left: 2px solid transparent; margin-left: -18px; padding-left: 16px; transition: .2s;
}
.toc a:hover { color: var(--gold); }
.toc a.active { color: var(--gold); border-left-color: var(--gold); font-weight: 600; }

.articles { max-width: 760px; }
article.entry { margin-bottom: 56px; scroll-margin-top: 86px; }
article.entry h2 {
  font-family: var(--font-kai); font-size: clamp(26px, 4vw, 34px); letter-spacing: 2px;
  margin: 0 0 6px; line-height: 1.3;
}
article.entry .meta {
  font-family: var(--font-sans); font-size: 13px; color: var(--muted); margin-bottom: 18px;
  display: flex; gap: 14px; flex-wrap: wrap;
}
article.entry .meta span::before { content: "·"; margin-right: 14px; color: var(--gold); }
article.entry .meta span:first-child::before { content: ""; margin: 0; }
article.entry p { margin: 0 0 18px; color: var(--text); }
article.entry p:first-of-type::first-letter {
  font-family: var(--font-kai); font-size: 3.1em; line-height: .82; float: left;
  padding: 6px 12px 0 0; color: var(--gold);
}
.pullquote {
  margin: 26px 0; padding: 18px 22px; border-left: 3px solid var(--wine);
  background: color-mix(in srgb, var(--wine) 10%, transparent);
  font-family: var(--font-kai); font-size: clamp(18px, 2.6vw, 22px); color: var(--gold-soft); line-height: 1.7;
}
.divider { display: flex; align-items: center; gap: 14px; color: var(--gold); margin: 18px 0 30px; opacity: .8; }
.divider::before, .divider::after { content: ""; height: 1px; flex: 1; background: var(--border); }

.back-top { display: inline-flex; gap: 6px; align-items: center; font-family: var(--font-sans); font-size: 14px; margin-top: 10px; }

@media (max-width: 860px) {
  .reading { grid-template-columns: 1fr; gap: 20px; }
  .toc { position: static; border-left: none; border-top: 1px solid var(--border); padding: 16px 0 0; margin-bottom: 6px; }
  .toc a { display: inline-block; margin: 4px 10px 4px 0; border-left: none; padding-left: 0; }
  .toc a.active { border-bottom: 2px solid var(--gold); }
}

/* ---------- 关于页 ---------- */
.prose { max-width: 760px; margin-inline: auto; }
.prose p { margin: 0 0 18px; }
.prose h3 { font-family: var(--font-kai); font-size: 24px; margin: 30px 0 8px; letter-spacing: 1px; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 40px 0 30px; margin-top: 30px; }
.footer-grid { display: flex; justify-content: space-between; gap: 24px; flex-wrap: wrap; align-items: flex-start; }
.footer-grid .brand { font-size: 20px; }
.footer-note { color: var(--muted); font-size: 14px; max-width: 40em; font-family: var(--font-sans); line-height: 1.7; }
.disclaimer {
  margin-top: 20px; padding: 14px 18px; border: 1px dashed var(--border); border-radius: 12px;
  color: var(--muted); font-size: 13px; font-family: var(--font-sans); line-height: 1.7; background: color-mix(in srgb, var(--bg-2) 60%, transparent);
}
.footer-bottom { margin-top: 22px; color: var(--muted); font-size: 13px; font-family: var(--font-sans); text-align: center; }

/* ---------- 滚动揭示 ---------- */
/* 默认可见：即使 JS 未加载/异常，核心内容也不会丢失 */
.reveal { opacity: 1; transform: none; }
/* 仅当 JS 启用（html.js）时才先做隐藏，再由滚动监听渐显 */
html.js .reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
html.js .reveal.in { opacity: 1; transform: none; }
/* 兜底：用户偏好减少动效时直接显示 */
@media (prefers-reduced-motion: reduce) {
  html.js .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------- 焦点可见性 ---------- */
:focus-visible { outline: 2px solid var(--ring); outline-offset: 3px; border-radius: 4px; }