/* ============================================================
   易經大白話 · 全站樣式
   紙色 × 墨色 × 朱紅 × 金，襯線標題 / 黑體正文
   ============================================================ */
:root {
  --paper: #f7f2e7;
  --paper-2: #fffdf7;
  --paper-3: #efe7d7;
  --ink: #1b1916;
  --ink-2: #443d33;
  --ink-3: #7b7163;
  --line: #ddd0b8;
  --line-2: #ece3d1;
  --red: #a4342a;
  --red-soft: #c25a4a;
  --gold: #a8854e;
  --shadow: 0 10px 30px rgba(40, 30, 12, .08);
  --serif: "Noto Serif TC", "Source Han Serif TC", "Songti TC", "PMingLiU", "SimSun", serif;
  --sans: "Noto Sans TC", "Source Han Sans TC", "PingFang TC", "Microsoft JhengHei", "Segoe UI", sans-serif;
  --maxw: 1220px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 96px; }

body {
  margin: 0;
  background: var(--paper);
  background-image:
    radial-gradient(circle at 12% 0%, rgba(168, 133, 78, .10), transparent 42%),
    radial-gradient(circle at 88% 12%, rgba(164, 52, 42, .06), transparent 38%),
    repeating-linear-gradient(0deg, rgba(0, 0, 0, .012) 0 1px, transparent 1px 3px);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--red); }
img { max-width: 100%; height: auto; }
::selection { background: rgba(164, 52, 42, .16); }

/* 卦象線條 */
.tri { display: inline-flex; flex-direction: column; gap: 3px; width: 20px; vertical-align: middle; }
.tri i.on { display: block; height: 3px; background: var(--gold); border-radius: 1px; }
.tri i.off {
  display: block; height: 3px; border-radius: 1px;
  background: linear-gradient(90deg, var(--gold) 0 44%, transparent 44% 56%, var(--gold) 56% 100%);
}
.tri.tri-lg { width: 32px; gap: 6px; }
.tri.tri-lg i.on, .tri.tri-lg i.off { height: 5px; }
.tri-seal {
  display: inline-grid; place-items: center;
  width: 21px; height: 21px;
  background: var(--red); color: #fff;
  font-family: var(--serif); font-size: 13px;
  border-radius: 2px; vertical-align: middle;
}
.tri-seal.tri-lg { width: 36px; height: 36px; font-size: 20px; }
.tri.hexfig { width: 30px; gap: 2px; }
.tri.hexfig i.on, .tri.hexfig i.off { height: 3px; }

/* ---------------------------------------------------------- Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 242, 231, .94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
  height: 70px;
  display: flex;
  align-items: center;
  gap: 22px;
}
.brand { display: flex; align-items: center; gap: 11px; flex: 0 0 auto; }
.seal {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  background: var(--red);
  color: #fff;
  font-family: var(--serif);
  font-size: 21px;
  border-radius: 4px;
  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, .22);
  letter-spacing: 0;
}
.seal.small { width: 32px; height: 32px; font-size: 18px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-family: var(--serif); font-size: 20px; letter-spacing: .04em; }
.brand-text small { font-size: 11px; color: var(--ink-3); letter-spacing: .14em; }

.mega-nav { display: flex; align-items: center; gap: 2px; flex: 1 1 auto; flex-wrap: nowrap; }
.mega-nav a {
  padding: 8px 10px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--ink-2);
  border-radius: 4px;
  white-space: nowrap;
  transition: background .18s, color .18s;
}
.mega-nav a:hover, .mega-nav a.is-hot {
  background: var(--paper-3);
  color: var(--red);
}
.mega-nav a.is-active { color: var(--red); box-shadow: inset 0 -2px 0 var(--red); }

.header-actions { flex: 0 0 auto; }
.btn-ghost {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid var(--red);
  color: var(--red);
  border-radius: 999px;
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: .04em;
  transition: .2s;
}
.btn-ghost:hover { background: var(--red); color: #fff; }

.nav-toggle { display: none; }

/* Mega panel */
.mega-panel {
  position: absolute;
  left: 0; right: 0; top: 100%;
  background: var(--paper-2);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 24px 40px rgba(40, 30, 12, .12);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .18s ease, transform .18s ease, visibility .18s;
}
.site-header.menu-open .mega-panel { opacity: 1; visibility: visible; transform: none; }
.mega-section { display: none; max-width: var(--maxw); margin: 0 auto; padding: 26px 24px 30px; }
.mega-section.is-active { display: block; }
.mega-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; padding-bottom: 16px; border-bottom: 1px dashed var(--line); }
.mega-head h3 { margin: 0 0 4px; font-family: var(--serif); font-size: 21px; letter-spacing: .05em; }
.mega-head p { margin: 0; font-size: 13.5px; color: var(--ink-3); max-width: 620px; line-height: 1.7; }
.mega-more { font-size: 13px; font-weight: 700; color: var(--red); white-space: nowrap; }
.mega-links { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px 22px; padding-top: 16px; }
.mega-links a {
  display: block;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--ink-2);
  border-radius: 4px;
  border-left: 2px solid transparent;
}
.mega-links a:hover { background: var(--paper-3); border-left-color: var(--red); color: var(--red); }
/* 多層次主題選單 */
.mega-topics { display: grid; gap: 26px; padding-top: 18px; }
.mega-topic { border-left: 1px solid var(--line-2); padding-left: 14px; }
.mt-title {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--gold);
}
.mt-title i { font-style: normal; font-family: var(--sans); font-size: 10px; color: var(--ink-3); letter-spacing: .04em; }
.mt-list { margin: 0; padding: 0; list-style: none; }
.mt-list a {
  display: block;
  padding: 7px 8px;
  font-size: 13.5px;
  color: var(--ink-2);
  border-radius: 3px;
  border-left: 2px solid transparent;
  transition: .15s;
}
.mt-list a:hover { background: var(--paper-3); border-left-color: var(--red); color: var(--red); }

/* 六十四卦：左側主題＋右側 64 卦格 */
.mega-hex-body { display: grid; grid-template-columns: 236px minmax(0, 1fr); gap: 28px; padding-top: 18px; }
.mega-topics-col { border-right: 1px solid var(--line-2); padding-right: 16px; }
.mega-topics-col .mega-topic { border-left: 0; padding-left: 0; margin-bottom: 14px; }
.hm-block + .hm-block { margin-top: 14px; }
.hm-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 5px 6px; }
.hm-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 9px;
  font-family: var(--serif);
  font-size: 13px;
  color: var(--ink-2);
  background: var(--paper);
  border: 1px solid var(--line-2);
  border-radius: 3px;
  transition: .15s;
  white-space: nowrap;
}
.hm-item b { font-family: var(--sans); font-size: 10px; font-weight: 600; color: var(--ink-3); letter-spacing: .02em; min-width: 13px; }
.hm-fig { display: inline-flex; flex-direction: column; gap: 1px; width: 13px; flex: none; }
.hm-fig s { display: block; height: 2px; border-radius: 1px; background: var(--gold); text-decoration: none; }
.hm-fig s.off { background: linear-gradient(90deg, var(--gold) 0 40%, transparent 40% 60%, var(--gold) 60% 100%); }
.hm-item:hover { background: var(--red); border-color: var(--red); color: #fff; }
.hm-item:hover b { color: rgba(255, 255, 255, .82); }
.hm-item:hover .hm-fig s { background: rgba(255, 240, 220, .9); }
.hm-item:hover .hm-fig s.off { background: linear-gradient(90deg, rgba(255, 240, 220, .9) 0 40%, transparent 40% 60%, rgba(255, 240, 220, .9) 60% 100%); }

/* ---------------------------------------------------------- Layout */
.page-wrap { max-width: var(--maxw); margin: 0 auto; padding: 26px 24px 70px; }
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 302px;
  gap: 46px;
  align-items: start;
}
.content-col { min-width: 0; }

/* ---------------------------------------------------------- Breadcrumb */
.breadcrumb { font-size: 13px; color: var(--ink-3); margin: 4px 0 20px; }
.breadcrumb a { color: var(--ink-3); }
.breadcrumb a:hover { color: var(--red); }
.breadcrumb span { color: var(--ink-2); }

/* ---------------------------------------------------------- Hero */
.hero { border-bottom: 1px solid var(--line); background: linear-gradient(180deg, rgba(255, 253, 247, .8), transparent 85%); }
.hero-inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 62px 24px 54px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 48px;
  align-items: center;
}
.hero-kicker {
  display: inline-block;
  margin: 0 0 18px;
  padding: 5px 14px;
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--red);
  background: rgba(164, 52, 42, .07);
  border: 1px solid rgba(164, 52, 42, .18);
  border-radius: 999px;
}
.hero h1 {
  margin: 0 0 20px;
  font-family: var(--serif);
  font-size: clamp(34px, 4vw, 52px);
  line-height: 1.3;
  letter-spacing: .02em;
  font-weight: 700;
}
.hero h1 .accent { color: var(--red); position: relative; }
.hero h1 .accent::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 2px; height: 6px;
  background: rgba(168, 133, 78, .28);
}
.hero-lead { font-size: 17px; color: var(--ink-2); max-width: 640px; line-height: 1.95; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.btn-primary {
  display: inline-block;
  padding: 13px 26px;
  background: var(--ink);
  color: var(--paper-2);
  border-radius: 3px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .06em;
  transition: .2s;
}
.btn-primary:hover { background: var(--red); color: #fff; }
.btn-line {
  display: inline-block;
  padding: 13px 24px;
  border: 1px solid var(--ink-2);
  border-radius: 3px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .06em;
  color: var(--ink);
  transition: .2s;
}
.btn-line:hover { background: var(--ink); color: var(--paper-2); }

.hero-figure { text-align: center; }
.bagua {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 12px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  border-radius: 6px;
}
.bagua .cell, .bagua .tai {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  background: var(--paper);
  border-radius: 3px;
}
.bagua .tai {
  background: var(--ink);
  color: var(--paper-2);
  font-family: var(--serif);
  font-size: 30px;
}
.bagua .tai b { font-weight: 500; }
.hero-note { margin: 12px 0 0; font-size: 11.5px; letter-spacing: .16em; color: var(--ink-3); }

/* ---------------------------------------------------------- Section */
.section { max-width: var(--maxw); margin: 0 auto; padding: 58px 24px; border-bottom: 1px solid var(--line-2); }
.section:last-child { border-bottom: 0; }
.sec-head { margin-bottom: 30px; max-width: 760px; }
.sec-head h2 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: clamp(24px, 2.4vw, 31px);
  letter-spacing: .04em;
  position: relative;
  padding-left: 16px;
}
.sec-head h2::before {
  content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 4px;
  background: var(--red);
}
.sec-head p { margin: 0; color: var(--ink-2); font-size: 15.5px; line-height: 1.85; }
.sec-foot { margin-top: 26px; }

.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.cat-card {
  padding: 24px 22px 20px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  position: relative;
  transition: .22s;
}
.cat-card::before {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 100%;
  background: var(--red); transform: scaleX(0); transform-origin: left; transition: .25s;
}
.cat-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: var(--line); }
.cat-card:hover::before { transform: scaleX(1); }
.cat-card-img { display: block; margin: -24px -22px 16px; aspect-ratio: 3/4; overflow: hidden; background: #e9e1d1; border-bottom: 1px solid var(--line); }
.cat-card-img img { display: block; width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform .5s; }
.cat-card:hover .cat-card-img img { transform: scale(1.04); }
.cat-card-icon { display: flex; align-items: center; gap: 8px; margin-bottom: 14px; }
.cat-card h3 { margin: 0 0 8px; font-family: var(--serif); font-size: 20px; letter-spacing: .05em; }
.cat-card p { margin: 0; font-size: 14px; color: var(--ink-2); line-height: 1.8; min-height: 50px; }
.cat-card-meta { display: block; margin-top: 14px; font-size: 11.5px; letter-spacing: .1em; color: var(--ink-3); text-transform: uppercase; }

/* 專業專題 */
.special-section {
  background: linear-gradient(180deg, rgba(168, 133, 78, .07), transparent 70%);
  border-top: 1px solid var(--line-2);
}
.sp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.sp-card {
  display: flex; flex-direction: column;
  padding: 26px 22px 22px;
  background: var(--ink);
  color: #ece5d5;
  border-radius: 4px;
  transition: .22s;
  position: relative;
  overflow: hidden;
}
.sp-card::after {
  content: "專";
  position: absolute; right: -14px; bottom: -30px;
  font-family: var(--serif); font-size: 110px; color: rgba(255, 255, 255, .045);
  line-height: 1; pointer-events: none;
}
.sp-card:hover { transform: translateY(-4px); box-shadow: 0 16px 34px rgba(20, 14, 4, .22); color: #fff; }
.sp-tag {
  align-self: flex-start;
  margin-bottom: 14px;
  padding: 3px 10px;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: #f0d9a8;
  border: 1px solid rgba(240, 217, 168, .4);
  border-radius: 2px;
}
.sp-card h3 { margin: 0 0 10px; font-family: var(--serif); font-size: 19.5px; line-height: 1.55; letter-spacing: .03em; }
.sp-card p { margin: 0 0 18px; font-size: 13.5px; line-height: 1.85; color: #bdb3a1; flex: 1; }
.sp-card:hover p { color: #d7cebd; }
.sp-more { font-size: 13px; font-weight: 700; color: #f0d9a8; letter-spacing: .06em; }

.feat-list { border-top: 1px solid var(--line); }
.feat-row {
  display: grid;
  grid-template-columns: 110px minmax(0, 1.1fr) minmax(0, 1.6fr);
  gap: 20px;
  align-items: baseline;
  padding: 16px 8px;
  border-bottom: 1px solid var(--line-2);
  transition: .18s;
}
.feat-row:hover { background: var(--paper-2); padding-left: 14px; }
.feat-cat { font-size: 12px; letter-spacing: .08em; color: var(--red); font-weight: 700; }
.feat-title { font-family: var(--serif); font-size: 16.5px; font-weight: 600; }
.feat-desc { font-size: 13px; color: var(--ink-3); line-height: 1.7; }

.hex-mini-grid { display: grid; grid-template-columns: repeat(8, 1fr); gap: 6px; }
.hex-mini {
  display: flex; align-items: center; gap: 6px;
  padding: 8px 8px;
  background: var(--paper-2);
  border: 1px solid var(--line-2);
  font-size: 13px;
  transition: .18s;
}
.hex-mini b { font-size: 10.5px; color: var(--ink-3); font-weight: 600; letter-spacing: .04em; }
.hex-mini:hover { border-color: var(--red); color: var(--red); }

.search-box { margin-bottom: 18px; }
.search-box input {
  width: 100%;
  max-width: 520px;
  padding: 13px 18px;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--ink);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  outline: none;
  transition: .2s;
}
.search-box input:focus { border-color: var(--red); box-shadow: 0 0 0 3px rgba(164, 52, 42, .08); }
.index-list { border-top: 1px solid var(--line); }
.idx-item {
  display: grid;
  grid-template-columns: 96px minmax(0, 1fr) minmax(0, 1.1fr);
  gap: 18px;
  padding: 13px 8px;
  border-bottom: 1px solid var(--line-2);
  font-size: 14px;
}
.idx-item a { font-family: var(--serif); font-size: 16px; font-weight: 600; }
.idx-item a:hover { color: var(--red); }
.idx-cat { font-size: 11.5px; color: var(--ink-3); letter-spacing: .08em; padding-top: 5px; }
.idx-desc { font-size: 12.5px; color: var(--ink-3); line-height: 1.65; }
.empty-hint { padding: 16px 8px; color: var(--ink-3); font-size: 14px; }

/* ---------------------------------------------------------- 分類頁 */
.cat-hero { padding: 10px 0 36px; border-bottom: 1px solid var(--line); margin-bottom: 34px; }
.cat-kicker { margin: 0 0 10px; font-size: 12px; letter-spacing: .2em; color: var(--gold); text-transform: uppercase; }
.cat-hero h1 { margin: 0; font-family: var(--serif); font-size: clamp(30px, 3.4vw, 42px); line-height: 1.35; letter-spacing: .04em; }
.h1-sub { display: block; margin-top: 12px; font-family: var(--sans); font-size: 15.5px; font-weight: 400; color: var(--ink-2); line-height: 1.8; letter-spacing: 0; }
.cat-lead { margin: 16px 0 0; max-width: 760px; font-size: 14px; color: var(--ink-3); }

.art-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; margin-bottom: 40px; }
.art-card {
  padding: 22px 20px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: .2s;
  display: flex; flex-direction: column;
}
.art-card:hover { border-color: var(--red); box-shadow: var(--shadow); transform: translateY(-2px); }
.art-no { font-family: var(--serif); font-size: 13px; color: var(--gold); letter-spacing: .08em; }
.art-card h3 { margin: 6px 0 8px; font-family: var(--serif); font-size: 18.5px; line-height: 1.55; }
.art-card p { margin: 0 0 14px; font-size: 13.5px; color: var(--ink-2); line-height: 1.8; flex: 1; }
.art-meta { font-size: 11.5px; color: var(--ink-3); letter-spacing: .06em; }

/* ---------------------------------------------------------- 文章 */
.art-head { padding-bottom: 28px; border-bottom: 1px solid var(--line); margin-bottom: 32px; }
.art-kicker { margin: 0 0 12px; font-size: 12.5px; letter-spacing: .06em; color: var(--ink-3); }
.art-kicker a { color: var(--red); font-weight: 700; }
.art-head h1 {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: clamp(27px, 3.2vw, 38px);
  line-height: 1.45;
  letter-spacing: .02em;
}
.art-lead { margin: 0; font-size: 16.5px; line-height: 1.95; color: var(--ink-2); }
.art-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 18px; }
.tag { padding: 3px 11px; font-size: 11.5px; color: var(--ink-3); background: var(--paper-3); border-radius: 2px; letter-spacing: .06em; }

.art-body { font-size: 16.5px; line-height: 2.0; color: #26221c; }
.art-body h2 {
  margin: 46px 0 16px;
  padding-top: 14px;
  font-family: var(--serif);
  font-size: clamp(21px, 2.2vw, 26px);
  line-height: 1.5;
  letter-spacing: .03em;
  border-top: 2px solid var(--ink);
}
.art-body h3 {
  margin: 32px 0 12px;
  font-family: var(--serif);
  font-size: 19.5px;
  line-height: 1.55;
  color: var(--ink);
  letter-spacing: .02em;
}
.art-body h4 { margin: 24px 0 10px; font-size: 16.5px; color: var(--ink-2); }
.h-num {
  display: inline-block;
  min-width: 12px;
  margin-right: 12px;
  padding: 0 7px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  color: var(--red);
  background: rgba(164, 52, 42, .07);
  border-radius: 2px;
  vertical-align: 2px;
}
.art-body h2:hover .h-num, .art-body h3:hover .h-num { background: rgba(164, 52, 42, .14); }
.art-body p { margin: 0 0 20px; }
.art-body strong { font-weight: 700; color: var(--ink); background: linear-gradient(transparent 62%, rgba(240, 217, 168, .55) 62%); }
.art-body ul, .art-body ol { margin: 0 0 22px; padding-left: 1.5em; }
.art-body li { margin-bottom: 8px; }
.art-body li::marker { color: var(--red); }
.art-body code {
  padding: 1px 6px;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: .92em;
  background: var(--paper-3);
  border-radius: 3px;
}
.art-body a { color: var(--red); border-bottom: 1px solid rgba(164, 52, 42, .3); }
.art-body a:hover { border-bottom-color: var(--red); }

.callout {
  margin: 26px 0;
  padding: 20px 24px;
  background: var(--paper-2);
  border-left: 4px solid var(--gold);
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--ink-2);
}
.callout p { margin: 0; }

.table-wrap { margin: 26px 0; overflow-x: auto; border: 1px solid var(--line); background: var(--paper-2); }
table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
caption { padding: 12px 16px; text-align: left; font-size: 13px; color: var(--ink-3); border-bottom: 1px solid var(--line-2); }
thead th {
  padding: 12px 14px;
  text-align: left;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--ink);
  background: var(--paper-3);
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
tbody td { padding: 11px 14px; border-bottom: 1px solid var(--line-2); line-height: 1.7; vertical-align: top; }
tbody tr:hover { background: rgba(168, 133, 78, .06); }
tbody tr:last-child td { border-bottom: 0; }
.hex-table td.hex-no { color: var(--gold); font-weight: 700; font-size: 13px; }
.hex-table td.hex-name { font-family: var(--serif); font-size: 16px; font-weight: 600; white-space: nowrap; }
.hex-table td.hex-name small { display: block; font-family: var(--sans); font-size: 11px; color: var(--ink-3); font-weight: 400; }
.hex-table td.hex-sym { font-size: 17px; color: var(--gold); letter-spacing: 2px; white-space: nowrap; }

.faq-block { margin: 52px 0 0; }
.faq-h { font-family: var(--serif); font-size: 22px; margin: 0 0 16px; padding-left: 14px; border-left: 4px solid var(--red); }
.faq-item { border-bottom: 1px solid var(--line-2); }
.faq-item summary {
  padding: 16px 4px;
  cursor: pointer;
  font-weight: 600;
  font-size: 15.5px;
  list-style: none;
  position: relative;
  padding-right: 30px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+"; position: absolute; right: 6px; top: 14px;
  font-size: 18px; color: var(--red); font-weight: 400;
}
.faq-item[open] summary::after { content: "−"; }
.faq-a { padding: 0 4px 16px; font-size: 15px; color: var(--ink-2); line-height: 1.9; }
.faq-a p { margin: 0; }

.article-pager { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 56px 0 0; }
.pg {
  display: block;
  padding: 16px 18px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  transition: .2s;
}
.pg small { display: block; font-size: 11px; color: var(--ink-3); letter-spacing: .1em; margin-bottom: 4px; }
.pg span { font-family: var(--serif); font-size: 14.5px; line-height: 1.5; }
.pg.next { text-align: right; }
.pg:hover { border-color: var(--red); }
.pg.empty { background: none; border: 0; }

.rel-block { margin-top: 46px; }
.rel-h { font-family: var(--serif); font-size: 19px; margin: 0 0 14px; }
.mini-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.mini-card {
  padding: 14px;
  background: var(--paper-2);
  border: 1px solid var(--line-2);
  font-size: 13.5px;
  display: flex; flex-direction: column; gap: 4px;
  transition: .2s;
}
.mini-card small { color: var(--ink-3); font-size: 11.5px; line-height: 1.6; }
.mini-card:hover { border-color: var(--red); }

/* --- 64 卦實務案例 --- */
.hex-table { margin-top: 34px; }
.hex-table td.hex-case { white-space: nowrap; text-align: right; }
.hex-table td.hex-case a { color: var(--red); font-size: 12.5px; border-bottom: 1px solid rgba(164, 52, 42, .3); }
.hex-table td.hex-case a:hover { border-bottom-color: var(--red); }

.case-cta {
  margin: 34px 0 0;
  padding: 24px 26px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
}
.case-cta p { margin: 0 0 12px; color: var(--ink-2); font-size: 13.5px; line-height: 1.85; }

.case-hero-fig {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 2px 0 14px;
  color: var(--ink-3);
  font-size: 11.5px;
  letter-spacing: .04em;
}
.case-hero-fig .tri.hexfig { width: 40px; gap: 4px; }
.case-hero-fig .tri.hexfig i.on, .case-hero-fig .tri.hexfig i.off { height: 4px; }
.case-back { margin: 26px 0 0; font-size: 13px; }

.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; margin: 0 0 34px; }
.case-item {
  display: grid;
  grid-template-columns: 26px 1fr;
  grid-template-areas: "fig name" "fig title";
  align-items: center;
  gap: 2px 10px;
  padding: 12px 12px 12px 10px;
  background: var(--paper-2);
  border: 1px solid var(--line-2);
  transition: .2s;
}
.case-item .hm-fig { grid-area: fig; align-self: start; margin-top: 2px; }
.case-item b { grid-area: name; font-family: var(--serif); font-size: 13.5px; font-weight: 600; }
.case-item span { grid-area: title; font-size: 11.5px; color: var(--ink-3); line-height: 1.55; }
.case-item:hover { border-color: var(--red); }
.case-item:hover b { color: var(--red); }

.cat-acc .sub-links.case-links { max-height: 340px; overflow-y: auto; padding-right: 6px; }
.cat-acc .sub-links.case-links::-webkit-scrollbar { width: 4px; }
.cat-acc .sub-links.case-links::-webkit-scrollbar-thumb { background: var(--line); border-radius: 2px; }

/* ---------------------------------------------------------- Sidebar */
.sidebar { position: sticky; top: 92px; display: flex; flex-direction: column; gap: 18px; max-height: calc(100vh - 110px); }
.sidebar-block {
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 18px 16px;
}
.sidebar-block.toc-block { max-height: 46vh; overflow: auto; }
.sidebar-block.cats-block { max-height: 46vh; overflow: auto; }
.sidebar-title {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--ink);
  padding-bottom: 10px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; gap: 8px;
}
.sidebar-title::before {
  content: ""; width: 6px; height: 6px; background: var(--red); border-radius: 50%;
}
.toc-list { display: flex; flex-direction: column; }
.toc-link {
  display: flex;
  gap: 9px;
  padding: 6px 8px 6px 10px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--ink-2);
  border-left: 2px solid transparent;
  transition: .16s;
}
.toc-link:hover { color: var(--red); background: rgba(168, 133, 78, .07); }
.toc-link.lv3 { padding-left: 26px; font-size: 12.5px; color: var(--ink-3); }
.toc-link.lv4 { padding-left: 38px; font-size: 12px; color: var(--ink-3); }
.toc-n {
  flex: 0 0 auto;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
  color: var(--red);
  padding-top: 2px;
  min-width: 22px;
}
.toc-link.is-active {
  color: var(--red);
  font-weight: 700;
  border-left-color: var(--red);
  background: rgba(164, 52, 42, .06);
}

.cat-list { display: flex; flex-direction: column; gap: 1px; }
.cat-acc summary {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-2);
  cursor: pointer;
  list-style: none;
  border-radius: 3px;
}
.cat-acc summary::-webkit-details-marker { display: none; }
.cat-acc summary:hover { background: var(--paper-3); color: var(--red); }
.cat-acc summary.is-active { color: var(--red); }
.cat-ico { color: var(--gold); font-size: 15px; width: 18px; flex: 0 0 auto; text-align: center; }
.cat-n { margin-left: auto; font-size: 10.5px; color: var(--ink-3); font-weight: 400; }
.sub-links { padding: 2px 0 8px 24px; display: flex; flex-direction: column; border-left: 1px solid var(--line); margin-left: 16px; }
.sub-link {
  padding: 5px 8px;
  font-size: 12.5px;
  line-height: 1.55;
  color: var(--ink-3);
  border-radius: 2px;
}
.sub-link:hover { color: var(--red); background: var(--paper-3); }
.sub-link.is-active { color: var(--red); font-weight: 700; }
.sub-link.all { color: var(--ink-2); font-weight: 700; }

/* ---------------------------------------------------------- Footer */
.site-footer { background: var(--ink); color: #cfc6b6; margin-top: 40px; }
.footer-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 48px 24px 28px;
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 40px;
}
.footer-brand { display: flex; gap: 12px; align-items: flex-start; }
.footer-brand strong { font-family: var(--serif); font-size: 19px; color: #fff; letter-spacing: .05em; }
.footer-brand p { margin: 6px 0 0; font-size: 13px; line-height: 1.8; color: #9f9484; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px 20px; }
.footer-col { display: flex; flex-direction: column; gap: 10px; }
.footer-col a { font-size: 13.5px; color: #cfc6b6; }
.footer-col a:hover { color: #fff; }
.footer-bottom {
  max-width: var(--maxw); margin: 0 auto;
  padding: 20px 24px 34px;
  border-top: 1px solid rgba(255, 255, 255, .1);
  font-size: 12px;
  color: #8d8375;
  line-height: 1.9;
}
.footer-bottom p { margin: 0 0 6px; }

.to-top {
  position: fixed; right: 26px; bottom: 26px;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  background: var(--ink); color: var(--paper-2);
  border-radius: 3px;
  font-size: 16px;
  opacity: 0; pointer-events: none;
  transition: .25s;
  z-index: 90;
}
.to-top.show { opacity: 1; pointer-events: auto; }
.to-top:hover { background: var(--red); color: #fff; }

/* ---------------------------------------------------------- 404 */
.notfound { text-align: center; padding: 80px 0 40px; max-width: 640px; margin: 0 auto; }
.nf-code { font-family: var(--serif); font-size: 76px; line-height: 1; color: var(--line); margin: 0 0 10px; letter-spacing: .1em; }
.notfound h1 { font-family: var(--serif); font-size: 26px; margin: 0 0 14px; }
.notfound p { color: var(--ink-2); font-size: 15px; }
.nf-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 24px 0; }
.nf-links a { padding: 7px 14px; border: 1px solid var(--line); background: var(--paper-2); font-size: 13.5px; border-radius: 2px; }
.nf-links a:hover { border-color: var(--red); color: var(--red); }

/* ---------------------------------------------------------- 響應式 */
@media (max-width: 1180px) {
  .mega-nav a { padding: 8px 7px; font-size: 13.5px; }
  .hex-mini-grid { grid-template-columns: repeat(6, 1fr); }
  .hm-item { font-size: 11.5px; padding: 5px 2px; gap: 3px; }
  .hm-item b { font-size: 9px; }
  .hm-fig { width: 11px; }
  .mega-hex-body { grid-template-columns: 200px minmax(0, 1fr); gap: 20px; }
}

@media (max-width: 1024px) {
  .layout { grid-template-columns: minmax(0, 1fr); gap: 34px; }
  .sidebar { position: static; max-height: none; }
  .sidebar-block.toc-block, .sidebar-block.cats-block { max-height: none; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-figure { max-width: 320px; }
  .cat-grid, .sp-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-toggle {
    display: flex; flex-direction: column; gap: 5px;
    margin-left: auto;
    background: none; border: 0; cursor: pointer; padding: 10px;
  }
  .nav-toggle span { display: block; width: 22px; height: 2px; background: var(--ink); }
  .mega-nav {
    display: none;
    position: absolute; top: 70px; left: 0; right: 0;
    background: var(--paper-2);
    border-bottom: 1px solid var(--line);
    flex-direction: column; align-items: stretch;
    padding: 10px 16px 20px;
    max-height: calc(100vh - 70px); overflow: auto;
    gap: 0;
  }
  body.nav-open .mega-nav { display: flex; }
  .mega-nav a { padding: 12px 10px; font-size: 15px; border-bottom: 1px solid var(--line-2); border-radius: 0; }
  .header-actions { display: none; }
  .mega-panel { display: none; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .hero-inner { padding: 40px 18px 40px; }
  .hero h1 { font-size: 30px; }
  .page-wrap { padding: 18px 18px 50px; }
  .section { padding: 40px 18px; }
  .cat-grid, .sp-grid, .art-grid { grid-template-columns: 1fr; }
  .hex-mini-grid { grid-template-columns: repeat(4, 1fr); }
  .feat-row { grid-template-columns: 1fr; gap: 4px; }
  .idx-item { grid-template-columns: 1fr; gap: 2px; }
  .idx-cat { padding-top: 0; }
  .mini-grid { grid-template-columns: 1fr; }
  .case-grid { grid-template-columns: repeat(2, 1fr); }
  .article-pager { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 26px; padding: 36px 18px 20px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
  .art-body { font-size: 16px; line-height: 1.95; }
  .art-body h2 { margin-top: 36px; }
  table { font-size: 13.5px; }
}

@media (max-width: 420px) {
  .hero h1 { font-size: 26px; letter-spacing: 0; }
  .art-head h1 { font-size: 25px; }
  .hero-lead { font-size: 15.5px; }
  .art-body h2 { font-size: 20px; }
  .art-body h3 { font-size: 18px; }
  .hex-mini-grid { grid-template-columns: repeat(3, 1fr); }
}

@media print {
  .site-header, .sidebar, .site-footer, .to-top, .article-pager, .rel-block { display: none; }
  .layout { display: block; }
}