/* ============================================================
   渔樵问对 · 渔樵智慧 —— 宣纸水墨主题样式表
   ============================================================ */

:root {
  --paper: #F6F2E9;
  --paper-2: #EFE9DC;
  --paper-3: #E6DECD;
  --ink: #22201C;
  --ink-2: #4B473E;
  --ink-3: #7C7566;
  --cinnabar: #9E2B25;
  --cinnabar-2: #C0514A;
  --dai: #2E4A57;
  --jade: #4E6B58;
  --gold: #A5813C;
  --line: rgba(34, 32, 28, .14);
  --line-2: rgba(34, 32, 28, .07);
  --shadow: 0 2px 12px rgba(34, 32, 28, .07);
  --shadow-lg: 0 12px 36px rgba(34, 32, 28, .15);
  --radius: 14px;
  --radius-sm: 9px;
  --serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", "宋体", serif;
  --kai: "Kaiti SC", "KaiTi", "STKaiti", "楷体", var(--serif);
  --fs: 17px;
  --maxw: 1200px;
}

[data-theme="dark"] {
  --paper: #15171A;
  --paper-2: #1C1F23;
  --paper-3: #252A2F;
  --ink: #E9E4D9;
  --ink-2: #C5BFB3;
  --ink-3: #928C80;
  --cinnabar: #C7564E;
  --cinnabar-2: #DC7C74;
  --dai: #7FB2C6;
  --jade: #8AAD97;
  --gold: #C6A463;
  --line: rgba(233, 228, 217, .16);
  --line-2: rgba(233, 228, 217, .08);
  --shadow: 0 2px 12px rgba(0, 0, 0, .35);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, .5);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: var(--serif);
  font-size: var(--fs);
  line-height: 1.9;
  color: var(--ink);
  background: var(--paper);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(165, 129, 60, .05), transparent 42%),
    radial-gradient(circle at 88% 92%, rgba(46, 74, 87, .05), transparent 46%);
  background-attachment: fixed;
  transition: background-color .35s, color .35s;
  overflow-x: hidden;
}

::selection { background: rgba(158, 43, 37, .18); }

a { color: var(--cinnabar); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

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

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 9px; height: 9px; }
::-webkit-scrollbar-thumb { background: var(--line); border-radius: 9px; }
::-webkit-scrollbar-thumb:hover { background: var(--ink-3); }
::-webkit-scrollbar-track { background: transparent; }

/* ============================================================
   布局
   ============================================================ */
.container { width: min(var(--maxw), 100% - 32px); margin-inline: auto; }
.container-narrow { width: min(880px, 100% - 32px); margin-inline: auto; }

.section { padding: 46px 0 8px; }
.section-head { margin-bottom: 26px; }
.section-head .eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; letter-spacing: .22em; color: var(--gold);
  text-transform: uppercase; margin-bottom: 8px;
}
.section-head h2 {
  font-family: var(--kai);
  font-size: clamp(24px, 3.6vw, 34px);
  margin: 0 0 8px; letter-spacing: .06em; color: var(--ink);
}
.section-head p { margin: 0; color: var(--ink-3); font-size: 15px; }

.divider-ink {
  height: 1px; border: 0; margin: 34px 0;
  background: linear-gradient(90deg, transparent, var(--line), transparent);
}

/* ============================================================
   顶栏
   ============================================================ */
.site-header {
  position: sticky; top: 0; z-index: 80;
  backdrop-filter: saturate(1.4) blur(12px);
  -webkit-backdrop-filter: saturate(1.4) blur(12px);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  border-bottom: 1px solid var(--line-2);
}
[data-theme="dark"] .site-header { background: color-mix(in srgb, #15171A 88%, transparent); }

.header-inner {
  width: min(var(--maxw), 100% - 32px); margin-inline: auto;
  height: 62px; display: flex; align-items: center; gap: 14px;
}

.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand .seal {
  width: 34px; height: 34px; border-radius: 7px;
  background: var(--cinnabar); color: #FFF8EC;
  display: grid; place-items: center;
  font-family: var(--kai); font-size: 15px; line-height: 1; letter-spacing: 0;
  box-shadow: 0 2px 8px rgba(158, 43, 37, .32);
  writing-mode: vertical-rl; padding: 3px;
}
.brand .brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand .brand-text b { font-family: var(--kai); font-size: 18px; letter-spacing: .12em; color: var(--ink); }
.brand .brand-text small { font-size: 11px; letter-spacing: .18em; color: var(--ink-3); }

.main-nav { display: flex; align-items: center; gap: 2px; margin-left: auto; }
.main-nav a {
  padding: 7px 12px; border-radius: 8px; font-size: 15px;
  color: var(--ink-2); white-space: nowrap; transition: .2s;
}
.main-nav a:hover { background: var(--paper-2); color: var(--ink); text-decoration: none; }
.main-nav a.active { color: var(--cinnabar); font-weight: 600; background: color-mix(in srgb, var(--cinnabar) 9%, transparent); }

.header-tools { display: flex; align-items: center; gap: 6px; margin-left: 8px; }
.icon-btn {
  width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--line);
  background: transparent; color: var(--ink-2); cursor: pointer;
  display: grid; place-items: center; font-size: 14px; font-family: var(--serif);
  transition: .2s;
}
.icon-btn:hover { background: var(--paper-2); color: var(--ink); }
.icon-btn:active { transform: scale(.94); }

.nav-toggle { display: none; }

/* ---------- 移动端抽屉 ---------- */
.drawer {
  position: fixed; inset: 0 0 0 auto; width: min(320px, 84vw); z-index: 120;
  background: var(--paper); border-left: 1px solid var(--line);
  transform: translateX(100%); transition: transform .3s cubic-bezier(.4,0,.2,1);
  display: flex; flex-direction: column; box-shadow: var(--shadow-lg);
}
.drawer.open { transform: none; }
.drawer-head { padding: 18px 20px; border-bottom: 1px solid var(--line-2); display: flex; align-items: center; justify-content: space-between; }
.drawer-nav { padding: 12px; overflow-y: auto; flex: 1; }
.drawer-nav a {
  display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 10px;
  color: var(--ink); font-size: 16px;
}
.drawer-nav a:hover { background: var(--paper-2); text-decoration: none; }
.drawer-nav a.active { background: color-mix(in srgb, var(--cinnabar) 10%, transparent); color: var(--cinnabar); font-weight: 600; }
.drawer-nav a i { font-style: normal; font-size: 18px; width: 22px; text-align: center; }
.drawer-mask { position: fixed; inset: 0; background: rgba(20,18,15,.42); z-index: 110; opacity: 0; pointer-events: none; transition: .3s; }
.drawer-mask.open { opacity: 1; pointer-events: auto; }

/* ---------- 底部快捷栏（移动端） ---------- */
.bottombar {
  display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 70;
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid var(--line-2);
  padding-bottom: env(safe-area-inset-bottom);
}
.bottombar .bb-inner { display: flex; }
.bottombar a {
  flex: 1; padding: 8px 2px 7px; text-align: center; color: var(--ink-3);
  font-size: 11px; display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.bottombar a i { font-style: normal; font-size: 18px; line-height: 1.2; }
.bottombar a.active { color: var(--cinnabar); }

/* ============================================================
   通用组件
   ============================================================ */
.card {
  background: color-mix(in srgb, var(--paper-2) 62%, var(--paper));
  border: 1px solid var(--line-2);
  border-radius: var(--radius); padding: 20px;
  transition: transform .25s, box-shadow .25s, border-color .25s;
}
.card.hoverable:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: var(--line); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 7px;
  padding: 9px 18px; border-radius: 999px; border: 1px solid var(--line);
  background: transparent; color: var(--ink); font-family: var(--serif); font-size: 15px;
  cursor: pointer; transition: .2s;
}
.btn:hover { background: var(--paper-2); text-decoration: none; }
.btn-primary { background: var(--cinnabar); border-color: var(--cinnabar); color: #FFF6E9; }
.btn-primary:hover { background: var(--cinnabar-2); border-color: var(--cinnabar-2); color: #FFF6E9; }
.btn-ghost { border-color: transparent; color: var(--ink-3); }
.btn:disabled { opacity: .45; cursor: not-allowed; }

.chip {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 11px; border-radius: 999px; font-size: 13px;
  background: var(--paper-2); color: var(--ink-2); border: 1px solid var(--line-2);
}
.chip.c1 { background: color-mix(in srgb, var(--cinnabar) 12%, transparent); color: var(--cinnabar); border-color: transparent; }
.chip.c2 { background: color-mix(in srgb, var(--dai) 14%, transparent); color: var(--dai); border-color: transparent; }
.chip.c3 { background: color-mix(in srgb, var(--jade) 14%, transparent); color: var(--jade); border-color: transparent; }
.chip.c4 { background: color-mix(in srgb, var(--gold) 16%, transparent); color: var(--gold); border-color: transparent; }

.tag { font-size: 12px; color: var(--ink-3); letter-spacing: .06em; }

.grid { display: grid; gap: 16px; }
.g2 { grid-template-columns: repeat(2, 1fr); }
.g3 { grid-template-columns: repeat(3, 1fr); }
.g4 { grid-template-columns: repeat(4, 1fr); }

.empty { text-align: center; padding: 60px 20px; color: var(--ink-3); }
.empty .big { font-size: 40px; opacity: .35; display: block; margin-bottom: 10px; }

/* 术语 / 注释 */
.term {
  border-bottom: 1px dashed var(--cinnabar);
  color: var(--cinnabar); cursor: help; position: relative;
}
.term:hover { background: color-mix(in srgb, var(--cinnabar) 8%, transparent); }

.popover {
  position: absolute; z-index: 200; width: min(300px, 76vw);
  background: var(--paper); border: 1px solid var(--line);
  border-radius: 10px; padding: 12px 14px; box-shadow: var(--shadow-lg);
  font-size: 14px; line-height: 1.7; color: var(--ink-2);
  display: none;
}
.popover.show { display: block; animation: fadeUp .18s ease; }
.popover b { display: block; color: var(--ink); font-family: var(--kai); font-size: 16px; margin-bottom: 4px; }

/* 提示条 */
.toast {
  position: fixed; left: 50%; bottom: 88px; transform: translateX(-50%) translateY(16px);
  background: var(--ink); color: var(--paper); padding: 10px 20px; border-radius: 999px;
  font-size: 14px; z-index: 300; opacity: 0; pointer-events: none; transition: .28s;
  box-shadow: var(--shadow-lg); max-width: 88vw; text-align: center;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

/* 动画 */
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes inkIn { from { opacity: 0; filter: blur(6px); } to { opacity: 1; filter: none; } }
html.js .reveal { opacity: 0; }
html.js .reveal.in { animation: fadeUp .6s cubic-bezier(.22,.61,.36,1) forwards; }
html.js.no-anim .reveal { opacity: 1 !important; animation: none !important; transform: none !important; }
html:not(.js) .reveal { opacity: 1; }

/* ============================================================
   首页 Hero
   ============================================================ */
.hero { position: relative; padding: 54px 0 30px; overflow: hidden; }
.hero-bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; opacity: .5; }
[data-theme="dark"] .hero-bg { opacity: .32; }
.hero > .container { position: relative; z-index: 1; }

.hero-title {
  font-family: var(--kai);
  font-size: clamp(46px, 11vw, 92px);
  line-height: 1.05; letter-spacing: .1em; margin: 0 0 6px;
  background: linear-gradient(180deg, var(--ink) 30%, var(--ink-3));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-family: var(--kai); font-size: clamp(15px, 2.2vw, 19px); color: var(--cinnabar); letter-spacing: .3em; margin: 0 0 18px; }
.hero-lead { max-width: 640px; color: var(--ink-2); font-size: 16px; margin: 0 0 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 30px; }

.hero-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.stat-card { text-align: center; padding: 18px 12px; }
.stat-card .num { font-family: var(--kai); font-size: 30px; color: var(--cinnabar); line-height: 1.1; }
.stat-card .lbl { font-size: 13px; color: var(--ink-3); letter-spacing: .1em; }

/* 每日一签 */
.daily {
  display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: center;
  border-left: 3px solid var(--cinnabar);
}
.daily .poem { font-family: var(--kai); font-size: 19px; line-height: 1.9; color: var(--ink); }
.daily .from { font-size: 13px; color: var(--ink-3); margin-top: 4px; }

/* 入口卡 */
.entry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.entry {
  display: block; padding: 22px 18px; border-radius: var(--radius);
  border: 1px solid var(--line-2); background: color-mix(in srgb, var(--paper-2) 55%, var(--paper));
  transition: .25s; position: relative; overflow: hidden;
}
.entry:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--line); text-decoration: none; }
.entry .ico { font-size: 26px; margin-bottom: 8px; display: block; }
.entry h3 { font-family: var(--kai); font-size: 19px; margin: 0 0 6px; color: var(--ink); letter-spacing: .06em; }
.entry p { margin: 0; font-size: 13.5px; color: var(--ink-3); line-height: 1.7; }
.entry .go { position: absolute; right: 14px; bottom: 12px; font-size: 18px; color: var(--line); transition: .25s; }
.entry:hover .go { color: var(--cinnabar); transform: translateX(4px); }

/* ============================================================
   原文阅读页
   ============================================================ */
.reader-layout { display: grid; grid-template-columns: 250px 1fr; gap: 26px; align-items: start; }
.reader-side { position: sticky; top: 78px; max-height: calc(100vh - 100px); overflow-y: auto; padding-right: 4px; }
.chapter-nav { list-style: none; margin: 0; padding: 0; }
.chapter-nav li a {
  display: flex; gap: 9px; padding: 8px 11px; border-radius: 8px;
  font-size: 14.5px; color: var(--ink-2); line-height: 1.5;
}
.chapter-nav li a:hover { background: var(--paper-2); text-decoration: none; }
.chapter-nav li a.active { background: color-mix(in srgb, var(--cinnabar) 11%, transparent); color: var(--cinnabar); font-weight: 600; }
.chapter-nav .no { font-family: var(--kai); color: var(--ink-3); flex-shrink: 0; }
.chapter-nav li a.active .no { color: var(--cinnabar); }

.reader-toolbar {
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
  padding: 12px 14px; border-radius: var(--radius); background: var(--paper-2);
  border: 1px solid var(--line-2); margin-bottom: 18px; position: sticky; top: 70px; z-index: 40;
}
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; overflow: hidden; background: var(--paper); }
.seg button {
  padding: 6px 15px; border: 0; background: transparent; color: var(--ink-2);
  font-family: var(--serif); font-size: 14px; cursor: pointer; transition: .18s;
}
.seg button.on { background: var(--cinnabar); color: #FFF6E9; }
.search-box { flex: 1; min-width: 150px; position: relative; }
.search-box input {
  width: 100%; padding: 7px 12px 7px 32px; border-radius: 999px;
  border: 1px solid var(--line); background: var(--paper); color: var(--ink);
  font-family: var(--serif); font-size: 14px; outline: none;
}
.search-box input:focus { border-color: var(--cinnabar); }
.search-box .ic { position: absolute; left: 11px; top: 50%; transform: translateY(-50%); color: var(--ink-3); font-size: 13px; }

.chapter { margin-bottom: 40px; scroll-margin-top: 130px; }
.chapter-hd { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 16px; }
.chapter-no {
  font-family: var(--kai); font-size: 13px; letter-spacing: .1em;
  width: 44px; height: 44px; flex-shrink: 0; border-radius: 50%;
  border: 1px solid var(--line); display: grid; place-items: center; color: var(--cinnabar);
  background: color-mix(in srgb, var(--cinnabar) 7%, transparent);
}
.chapter-hd h3 { font-family: var(--kai); font-size: 22px; margin: 0 0 3px; letter-spacing: .05em; }
.chapter-hd .sub { font-size: 13.5px; color: var(--ink-3); margin: 0; }
.chapter-hd .acts { margin-left: auto; display: flex; gap: 6px; }

.para-block { padding: 18px 20px; border-radius: var(--radius); background: color-mix(in srgb, var(--paper-2) 45%, var(--paper)); border: 1px solid var(--line-2); }
.para-block .y { font-family: var(--kai); font-size: calc(var(--fs) + 2px); line-height: 2.1; color: var(--ink); }
.para-block .t { font-size: var(--fs); line-height: 1.95; color: var(--ink-2); margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--line); }
.para-block .t::before { content: "译"; font-family: var(--kai); color: var(--gold); margin-right: 8px; font-size: 13px; border: 1px solid var(--gold); border-radius: 4px; padding: 0 4px; }

/* 对照模式 */
.parallel { display: grid; gap: 0; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); }
.parallel .row { display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid var(--line-2); }
.parallel .row:last-child { border-bottom: 0; }
.parallel .row > div { padding: 15px 18px; }
.parallel .row .col-y { font-family: var(--kai); font-size: calc(var(--fs) + 1px); line-height: 2.05; border-right: 1px solid var(--line-2); background: color-mix(in srgb, var(--paper-2) 30%, var(--paper)); }
.parallel .row .col-t { font-size: var(--fs); line-height: 1.95; color: var(--ink-2); background: color-mix(in srgb, var(--paper-2) 62%, var(--paper)); }
.parallel .row:hover > div { background: color-mix(in srgb, var(--gold) 6%, transparent); }
.parallel .row .idx { font-family: var(--kai); font-size: 11px; color: var(--ink-3); margin-right: 6px; }

mark.hl { background: color-mix(in srgb, var(--gold) 40%, transparent); color: var(--ink); border-radius: 3px; padding: 0 2px; }
mark.hl.cur { background: var(--cinnabar); color: #FFF6E9; }

.chapter-note { margin-top: 12px; padding: 14px 16px; border-radius: var(--radius-sm); background: color-mix(in srgb, var(--jade) 8%, transparent); border-left: 3px solid var(--jade); font-size: 14.5px; color: var(--ink-2); }
.chapter-note b { color: var(--jade); font-family: var(--kai); }

/* 上下章 */
.chapter-nav-btns { display: flex; justify-content: space-between; gap: 12px; margin-top: 30px; }

/* ============================================================
   概念解析
   ============================================================ */
.concept-card { position: relative; overflow: hidden; }
.concept-card .cname {
  font-family: var(--kai); font-size: 26px; letter-spacing: .12em; margin: 0 0 4px; color: var(--ink);
}
.concept-card .cen { font-size: 12px; letter-spacing: .18em; color: var(--gold); margin-bottom: 12px; }
.concept-card .cdef { font-size: 15px; color: var(--ink-2); margin: 0 0 14px; }
.concept-card .quote {
  font-family: var(--kai); font-size: 14.5px; color: var(--ink-3);
  border-left: 2px solid var(--cinnabar); padding-left: 12px; margin: 14px 0;
}
.concept-card .kw { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }

.diagram-box { background: var(--paper); border: 1px solid var(--line-2); border-radius: var(--radius); padding: 10px; overflow-x: auto; }
.diagram-box .diagram-d { display: block; }
.diagram-box .diagram-m { display: none; }
@media (max-width: 720px) {
  .diagram-box .diagram-d { display: none; }
  .diagram-box .diagram-m { display: block; }
  .diagram-box { padding: 10px 6px; }
}

/* 对比表 */
.cmp-table { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.cmp-table th, .cmp-table td { padding: 12px 14px; border-bottom: 1px solid var(--line-2); text-align: left; vertical-align: top; }
.cmp-table thead th { font-family: var(--kai); font-size: 15px; color: var(--ink); background: var(--paper-2); }
.cmp-table tbody tr:hover { background: color-mix(in srgb, var(--gold) 5%, transparent); }
.cmp-table td.a { color: var(--cinnabar); font-family: var(--kai); }
.cmp-table td.b { color: var(--dai); }

/* ============================================================
   邵雍专题 · 时间轴
   ============================================================ */
.timeline { position: relative; padding-left: 26px; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 6px; bottom: 6px; width: 1px; background: var(--line); }
.tl-item { position: relative; padding-bottom: 22px; }
.tl-item::before {
  content: ""; position: absolute; left: -23px; top: 8px; width: 9px; height: 9px;
  border-radius: 50%; background: var(--paper); border: 2px solid var(--cinnabar);
}
.tl-item .yr { font-family: var(--kai); font-size: 15px; color: var(--cinnabar); letter-spacing: .05em; }
.tl-item .ev { font-size: 14.5px; color: var(--ink-2); }

.portrait { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); background: var(--paper-2); }
.portrait img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.portrait .cap { padding: 10px 12px; font-size: 12.5px; color: var(--ink-3); text-align: center; }

/* 八卦 */
.gua-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.gua {
  padding: 14px 10px; border-radius: var(--radius-sm); text-align: center; cursor: pointer;
  border: 1px solid var(--line-2); background: color-mix(in srgb, var(--paper-2) 50%, var(--paper)); transition: .22s;
}
.gua:hover, .gua.on { border-color: var(--cinnabar); background: color-mix(in srgb, var(--cinnabar) 9%, transparent); transform: translateY(-2px); }
.gua .sym { font-size: 30px; letter-spacing: 4px; line-height: 1.3; color: var(--ink); font-family: var(--serif); }
.gua .nm { font-family: var(--kai); font-size: 17px; margin-top: 4px; }
.gua .at { font-size: 11.5px; color: var(--ink-3); }

.yao-line { display: flex; flex-direction: column; gap: 5px; align-items: center; margin: 4px 0 8px; }
.yao { display: block; width: 76px; height: 9px; border-radius: 2px; background: var(--ink); }
.yao.broken { width: 76px; background: transparent; display: flex; justify-content: space-between; }
.yao.broken::before, .yao.broken::after { content: ""; width: 32px; height: 9px; border-radius: 2px; background: var(--ink); align-self: center; }

/* ============================================================
   现代启示 · 工具
   ============================================================ */
.tool-box { border: 1px dashed var(--line); border-radius: var(--radius); padding: 18px; background: color-mix(in srgb, var(--paper-2) 40%, var(--paper)); }
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 14px; color: var(--ink-2); margin-bottom: 6px; font-family: var(--kai); letter-spacing: .04em; }
.field input, .field textarea, .field select {
  width: 100%; padding: 10px 13px; border-radius: var(--radius-sm);
  border: 1px solid var(--line); background: var(--paper); color: var(--ink);
  font-family: var(--serif); font-size: 15px; outline: none; resize: vertical;
}
.field input:focus, .field textarea:focus { border-color: var(--cinnabar); }

.slider-row { display: flex; align-items: center; gap: 12px; margin-bottom: 10px; }
.slider-row .lb { width: 96px; font-size: 14px; color: var(--ink-2); flex-shrink: 0; }
.slider-row input[type=range] { flex: 1; accent-color: var(--cinnabar); }
.slider-row .vl { width: 40px; text-align: right; font-family: var(--kai); color: var(--cinnabar); }

.result-box { margin-top: 16px; padding: 16px 18px; border-radius: var(--radius-sm); background: color-mix(in srgb, var(--gold) 10%, transparent); border-left: 3px solid var(--gold); font-size: 15px; }
.result-box h4 { font-family: var(--kai); margin: 0 0 8px; font-size: 17px; }

/* 条形图 */
.bar-row { display: grid; grid-template-columns: 90px 1fr 46px; gap: 10px; align-items: center; margin-bottom: 8px; font-size: 13.5px; }
.bar-track { height: 10px; border-radius: 5px; background: var(--paper-3); overflow: hidden; }
.bar-fill { height: 100%; border-radius: 5px; background: linear-gradient(90deg, var(--cinnabar), var(--cinnabar-2)); transition: width .6s cubic-bezier(.22,.61,.36,1); }

/* ============================================================
   问答
   ============================================================ */
.chat-wrap { max-width: 820px; margin-inline: auto; }
.chat-log { display: flex; flex-direction: column; gap: 14px; margin-bottom: 18px; }
.msg { display: flex; gap: 10px; align-items: flex-start; animation: fadeUp .35s ease; }
.msg .ava {
  width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0;
  display: grid; place-items: center; font-family: var(--kai); font-size: 15px;
}
.msg.me { flex-direction: row-reverse; }
.msg.me .ava { background: var(--paper-3); color: var(--ink-2); }
.msg.yu .ava { background: var(--cinnabar); color: #FFF6E9; }
.msg .bubble {
  padding: 12px 16px; border-radius: 14px; font-size: 15px; line-height: 1.85;
  max-width: 78%; white-space: pre-wrap; word-break: break-word;
}
.msg.me .bubble { background: var(--paper-3); color: var(--ink); border-top-right-radius: 4px; }
.msg.yu .bubble { background: color-mix(in srgb, var(--paper-2) 80%, var(--paper)); border: 1px solid var(--line-2); border-top-left-radius: 4px; }
.msg.yu .bubble .src { display: block; margin-top: 10px; padding-top: 8px; border-top: 1px dashed var(--line); font-size: 13px; color: var(--ink-3); }

.typing span { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--ink-3); margin-right: 4px; animation: blink 1.2s infinite; }
.typing span:nth-child(2) { animation-delay: .2s; }
.typing span:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%,80%,100% { opacity: .25; } 40% { opacity: 1; } }

.suggest-list { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.suggest-list button {
  padding: 7px 14px; border-radius: 999px; border: 1px solid var(--line);
  background: transparent; color: var(--ink-2); font-family: var(--serif); font-size: 13.5px; cursor: pointer; transition: .2s;
}
.suggest-list button:hover { border-color: var(--cinnabar); color: var(--cinnabar); background: color-mix(in srgb, var(--cinnabar) 7%, transparent); }

/* ============================================================
   测验
   ============================================================ */
.quiz-card { max-width: 720px; margin-inline: auto; }
.quiz-q { font-family: var(--kai); font-size: 20px; line-height: 1.8; margin: 0 0 18px; }
.opt {
  display: flex; gap: 11px; align-items: flex-start; padding: 13px 16px; border-radius: var(--radius-sm);
  border: 1px solid var(--line-2); background: color-mix(in srgb, var(--paper-2) 40%, var(--paper));
  cursor: pointer; margin-bottom: 10px; transition: .2s; font-size: 15.5px;
}
.opt:hover { border-color: var(--cinnabar); transform: translateX(3px); }
.opt .k { font-family: var(--kai); color: var(--ink-3); flex-shrink: 0; }
.opt.right { border-color: var(--jade); background: color-mix(in srgb, var(--jade) 12%, transparent); }
.opt.wrong { border-color: var(--cinnabar); background: color-mix(in srgb, var(--cinnabar) 10%, transparent); }
.opt.locked { cursor: default; }
.opt.locked:hover { transform: none; }

.progress-track { height: 6px; border-radius: 3px; background: var(--paper-3); overflow: hidden; margin-bottom: 18px; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--gold), var(--cinnabar)); transition: width .4s; }

.score-hero { text-align: center; padding: 30px 20px; }
.score-hero .n { font-family: var(--kai); font-size: 62px; color: var(--cinnabar); line-height: 1; }
.score-hero .t { font-family: var(--kai); font-size: 22px; margin: 10px 0; letter-spacing: .1em; }

/* ============================================================
   图库
   ============================================================ */
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gitem { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line-2); background: var(--paper-2); cursor: zoom-in; transition: .25s; }
.gitem:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.gitem .thumb { aspect-ratio: 4/3; overflow: hidden; background: var(--paper-3); }
.gitem .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.gitem:hover .thumb img { transform: scale(1.04); }
.gitem .meta { padding: 11px 13px; }
.gitem .meta b { font-family: var(--kai); font-size: 15.5px; display: block; }
.gitem .meta span { font-size: 12.5px; color: var(--ink-3); }

.lightbox { position: fixed; inset: 0; background: rgba(12,11,10,.9); z-index: 400; display: none; place-items: center; padding: 20px; }
.lightbox.show { display: grid; }
.lightbox img { max-width: 94vw; max-height: 82vh; border-radius: 6px; }
.lightbox .cap { color: #EFE9DC; text-align: center; margin-top: 14px; font-size: 14px; }
.lightbox .close { position: absolute; top: 18px; right: 22px; color: #EFE9DC; font-size: 30px; cursor: pointer; background: none; border: 0; }

/* ============================================================
   笔记 / 收藏
   ============================================================ */
.note-item { border-left: 3px solid var(--gold); padding: 12px 16px; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; background: color-mix(in srgb, var(--paper-2) 45%, var(--paper)); margin-bottom: 12px; }
.note-item .q { font-family: var(--kai); font-size: 15px; color: var(--ink); margin-bottom: 6px; }
.note-item .n { font-size: 14.5px; color: var(--ink-2); white-space: pre-wrap; }
.note-item .bar { display: flex; gap: 10px; margin-top: 8px; font-size: 12.5px; color: var(--ink-3); }
.note-item .bar button { background: none; border: 0; color: var(--cinnabar); cursor: pointer; font-family: var(--serif); font-size: 12.5px; padding: 0; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer { margin-top: 60px; padding: 34px 0 40px; border-top: 1px solid var(--line-2); background: color-mix(in srgb, var(--paper-2) 40%, transparent); }
.footer-inner { display: flex; flex-wrap: wrap; gap: 22px; justify-content: space-between; align-items: flex-start; }
.footer-col h4 { font-family: var(--kai); font-size: 16px; margin: 0 0 10px; letter-spacing: .08em; }
.footer-col a, .footer-col p { display: block; font-size: 13.5px; color: var(--ink-3); margin: 0 0 6px; }
.footer-bottom { margin-top: 24px; text-align: center; font-size: 12.5px; color: var(--ink-3); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .entry-grid { grid-template-columns: repeat(2, 1fr); }
  .g4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 900px) {
  .main-nav { display: none; }
  .nav-toggle { display: grid; }
  .reader-layout { grid-template-columns: 1fr; }
  .reader-side { display: none; }
  .reader-side.mobile-open { display: block; position: static; max-height: none; margin-bottom: 14px; }
  .g3 { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-cards { grid-template-columns: 1fr; }
  .daily { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  body { padding-bottom: 62px; }
  .bottombar { display: block; }
  .container, .container-narrow { width: calc(100% - 26px); }
  .entry-grid { grid-template-columns: 1fr; }
  .g2, .g3, .g4 { grid-template-columns: 1fr; }
  .hero { padding: 32px 0 18px; }
  .section { padding: 32px 0 4px; }
  .parallel .row { grid-template-columns: 1fr; }
  .parallel .row .col-y { border-right: 0; border-bottom: 1px dashed var(--line-2); }
  .msg .bubble { max-width: 86%; }
  .reader-toolbar { position: static; }
  .gua-grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
  .site-header .brand .brand-text small { display: none; }
  .toast { bottom: 74px; }
}

@media print {
  .site-header, .bottombar, .drawer, .reader-toolbar, .site-footer, .chapter-hd .acts { display: none !important; }
  body { background: #fff; }
}