/* ============================================================
   玄同 · 仙学修习馆
   视觉基调：宣纸 / 松烟墨 / 朱砂 / 石青
   ============================================================ */

:root{
  --paper:#F7F3EA;
  --paper-2:#FCFAF4;
  --paper-3:#F1EADA;
  --ink:#241F19;
  --ink-2:#4A4239;
  --ink-3:#7C7264;
  --ink-4:#A79C8B;
  --line:#E2D9C6;
  --line-2:#D2C6AD;
  --cinnabar:#A33A2E;
  --cinnabar-2:#C0563F;
  --gold:#A67C23;
  --jade:#2E6F6A;
  --azure:#3F6494;
  --shadow:0 1px 2px rgba(60,48,30,.05),0 8px 24px -8px rgba(60,48,30,.12);
  --shadow-lg:0 4px 12px rgba(60,48,30,.08),0 24px 60px -16px rgba(60,48,30,.22);
  --r:14px;
  --r-s:9px;
  --serif:"Songti SC","Source Han Serif SC","Noto Serif SC","Source Han Serif CN",
          "STZhongsong","SimSun","Georgia",serif;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB",
         "Microsoft YaHei","Segoe UI",system-ui,sans-serif;
  --sb-w:236px;
  --safe-b:env(safe-area-inset-bottom,0px);
}

[data-theme="dark"]{
  --paper:#16140F;
  --paper-2:#1D1A14;
  --paper-3:#26221A;
  --ink:#E8E0CE;
  --ink-2:#C6BCA6;
  --ink-3:#948B78;
  --ink-4:#6E6555;
  --line:#332E24;
  --line-2:#453E30;
  --cinnabar:#D06A56;
  --cinnabar-2:#E08268;
  --gold:#C9A15A;
  --jade:#5A9E96;
  --azure:#7396C4;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px -8px rgba(0,0,0,.5);
  --shadow-lg:0 4px 12px rgba(0,0,0,.4),0 24px 60px -16px rgba(0,0,0,.6);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;padding:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:15px;line-height:1.75;
  overflow-x:hidden;
  background-image:
    radial-gradient(circle at 18% 12%,rgba(166,124,35,.05),transparent 42%),
    radial-gradient(circle at 84% 78%,rgba(46,111,106,.045),transparent 46%);
  background-attachment:fixed;
}
a{color:inherit;text-decoration:none;cursor:pointer}
button{font-family:inherit;cursor:pointer;border:none;background:none;color:inherit}
img{max-width:100%}
::selection{background:rgba(163,58,46,.18)}

/* 滚动条 */
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:6px;border:2px solid var(--paper)}
::-webkit-scrollbar-thumb:hover{background:var(--ink-4)}

/* ============================================================ 加载屏 */
.boot{
  position:fixed;inset:0;z-index:9999;background:var(--paper);
  display:flex;align-items:center;justify-content:center;
  transition:opacity .5s ease,visibility .5s;
}
.boot.hide{opacity:0;visibility:hidden}
.boot-inner{text-align:center;color:var(--ink)}
.boot-glyph{color:var(--ink);animation:spin 9s linear infinite;display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}
.boot-title{font-family:var(--serif);font-size:31px;letter-spacing:.42em;
  margin:20px 0 0;text-indent:.42em;font-weight:600}
.boot-sub{font-size:12px;color:var(--ink-3);letter-spacing:.3em;
  margin-top:7px;text-indent:.3em}
.boot-bar{width:150px;height:2px;background:var(--line);margin:26px auto 0;
  border-radius:2px;overflow:hidden}
.boot-bar i{display:block;height:100%;width:30%;background:var(--cinnabar);
  border-radius:2px;animation:bootrun 1.25s ease-in-out infinite}
@keyframes bootrun{0%{margin-left:-32%}100%{margin-left:102%}}
.boot-tip{font-size:11.5px;color:var(--ink-4);margin-top:13px;letter-spacing:.1em}

/* ============================================================ 顶栏 */
.topbar{
  display:none;position:sticky;top:0;z-index:60;
  height:52px;align-items:center;gap:6px;padding:0 6px;
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
}
.tb-btn{width:40px;height:40px;display:grid;place-items:center;
  border-radius:10px;color:var(--ink-2)}
.tb-btn:active{background:var(--paper-3)}
.tb-title{flex:1;text-align:center;font-family:var(--serif);
  font-size:16px;font-weight:600;letter-spacing:.06em;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============================================================ 侧栏 */
.sidebar{
  position:fixed;left:0;top:0;bottom:0;width:var(--sb-w);z-index:70;
  background:var(--paper-2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:20px 0 12px;
  transition:transform .3s cubic-bezier(.3,.9,.3,1);
}
.sb-brand{display:flex;align-items:center;gap:11px;padding:0 20px 20px}
.sb-logo{color:var(--ink);flex-shrink:0;display:grid;place-items:center}
.sb-name b{display:block;font-family:var(--serif);font-size:19px;
  letter-spacing:.2em;font-weight:650;line-height:1.3}
.sb-name span{display:block;font-size:10.5px;color:var(--ink-4);
  letter-spacing:.19em;margin-top:1px}

.sb-nav{display:flex;flex-direction:column;gap:2px;padding:0 11px;flex:1}
.sb-item{
  display:flex;align-items:center;gap:11px;padding:10px 12px;
  border-radius:10px;color:var(--ink-2);font-size:14.5px;
  transition:background .16s,color .16s;position:relative;
}
.sb-item .ic{
  width:25px;height:25px;display:grid;place-items:center;flex-shrink:0;
  font-family:var(--serif);font-size:14px;border-radius:7px;
  background:var(--paper-3);color:var(--ink-3);transition:all .16s;
}
.sb-item:hover{background:var(--paper-3);color:var(--ink)}
.sb-item.on{background:var(--paper-3);color:var(--ink);font-weight:600}
.sb-item.on .ic{background:var(--cinnabar);color:#fff}
.sb-item.on::before{
  content:"";position:absolute;left:-11px;top:50%;transform:translateY(-50%);
  width:3px;height:19px;background:var(--cinnabar);border-radius:0 3px 3px 0;
}

.sb-stat{padding:14px 20px 10px;border-top:1px solid var(--line);margin-top:8px}
.sb-stat dl{display:grid;grid-template-columns:1fr 1fr;gap:9px 6px;margin:0}
.sb-stat div{margin:0}
.sb-stat dt{font-size:10px;color:var(--ink-4);letter-spacing:.08em}
.sb-stat dd{margin:1px 0 0;font-family:var(--serif);font-size:16px;
  font-weight:650;color:var(--ink)}

.sb-foot{padding:10px 16px 0}
.sb-theme{
  width:100%;display:flex;align-items:center;justify-content:center;gap:7px;
  padding:8px;border-radius:9px;border:1px solid var(--line);
  font-size:12.5px;color:var(--ink-3);transition:all .16s;
}
.sb-theme:hover{border-color:var(--line-2);color:var(--ink-2);background:var(--paper-3)}
.sb-note{font-size:10.5px;color:var(--ink-4);line-height:1.7;
  margin:11px 0 0;text-align:center}
.sb-mask{display:none;position:fixed;inset:0;z-index:65;
  background:rgba(20,16,10,.34);backdrop-filter:blur(2px)}

/* ============================================================ 主区 */
.main{margin-left:var(--sb-w);min-height:100vh}
.view{max-width:1120px;margin:0 auto;padding:36px 32px 80px;animation:fadeUp .34s ease}
@keyframes fadeUp{from{opacity:0;transform:translateY(9px)}to{opacity:1;transform:none}}

/* 通用排版 */
.pg-head{margin-bottom:26px}
.pg-eyebrow{font-size:11px;letter-spacing:.26em;color:var(--cinnabar);
  font-weight:600;margin-bottom:9px;text-indent:.26em}
.pg-title{font-family:var(--serif);font-size:29px;font-weight:650;
  letter-spacing:.06em;margin:0 0 9px;line-height:1.35}
.pg-desc{color:var(--ink-3);font-size:14px;max-width:70ch;margin:0;line-height:1.85}

.sec{margin-top:38px}
.sec-head{display:flex;align-items:baseline;gap:11px;margin-bottom:15px;
  padding-bottom:9px;border-bottom:1px solid var(--line)}
.sec-title{font-family:var(--serif);font-size:18.5px;font-weight:650;
  letter-spacing:.05em;margin:0;display:flex;align-items:center;gap:9px}
.sec-title::before{content:"";width:3px;height:15px;background:var(--cinnabar);
  border-radius:2px;display:inline-block}
.sec-more{margin-left:auto;font-size:12.5px;color:var(--ink-3);flex-shrink:0}
.sec-more:hover{color:var(--cinnabar)}
.sec-sub{font-size:12.5px;color:var(--ink-4)}

.card{background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:19px;transition:all .2s}
.card:hover{border-color:var(--line-2);box-shadow:var(--shadow)}

.tag{display:inline-flex;align-items:center;gap:3px;padding:2px 8px;
  border-radius:20px;font-size:11px;background:var(--paper-3);
  color:var(--ink-3);border:1px solid var(--line);white-space:nowrap}
.tag.sm{font-size:10px;padding:1px 6px}
.tag.hot{background:rgba(163,58,46,.09);color:var(--cinnabar);
  border-color:rgba(163,58,46,.2)}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:9px 17px;border-radius:9px;font-size:13.5px;font-weight:500;
  background:var(--ink);color:var(--paper);transition:all .18s;border:1px solid var(--ink)}
.btn:hover{opacity:.87;transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--ink-2);border-color:var(--line-2)}
.btn.ghost:hover{background:var(--paper-3);color:var(--ink)}
.btn.cin{background:var(--cinnabar);border-color:var(--cinnabar);color:#fff}
.btn.sm{padding:6px 13px;font-size:12.5px}

.empty{text-align:center;padding:56px 20px;color:var(--ink-4)}
.empty-ico{font-family:var(--serif);font-size:38px;opacity:.32;margin-bottom:11px}
.empty p{margin:5px 0;font-size:13.5px}

.spin{display:inline-block;width:15px;height:15px;border:2px solid var(--line-2);
  border-top-color:var(--cinnabar);border-radius:50%;animation:sp .7s linear infinite}
@keyframes sp{to{transform:rotate(360deg)}}
.loading{text-align:center;padding:44px;color:var(--ink-4);font-size:13px}
.loading .spin{margin-bottom:11px;display:block;margin-left:auto;margin-right:auto}

mark,.hl{background:rgba(212,160,23,.28);color:inherit;border-radius:2px;
  padding:0 1px;font-weight:600}
[data-theme="dark"] mark,[data-theme="dark"] .hl{background:rgba(201,161,90,.26)}

/* ============================================================ 首页 */
.hero{
  position:relative;border:1px solid var(--line);border-radius:20px;
  padding:44px 40px;background:
    linear-gradient(140deg,var(--paper-2) 0%,var(--paper-3) 100%);
  overflow:hidden;margin-bottom:34px;
}
.hero::after{
  content:"";position:absolute;right:-56px;top:50%;transform:translateY(-50%);
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(163,58,46,.07),transparent 68%);
  pointer-events:none;
}
.hero-tag{display:inline-block;font-size:11px;letter-spacing:.24em;
  color:var(--cinnabar);border:1px solid rgba(163,58,46,.28);
  padding:3px 12px;border-radius:20px;margin-bottom:17px;text-indent:.24em}
.hero h1{font-family:var(--serif);font-size:37px;font-weight:650;
  margin:0 0 13px;letter-spacing:.09em;line-height:1.34}
.hero p{color:var(--ink-2);font-size:14.5px;max-width:62ch;
  margin:0 0 22px;line-height:1.95}
.hero p em{font-style:normal;color:var(--cinnabar);font-weight:600}
.hero-acts{display:flex;gap:11px;flex-wrap:wrap;position:relative;z-index:2}

.qsearch{position:relative;margin-bottom:30px}
.qsearch input{
  width:100%;padding:15px 50px 15px 46px;font-size:15px;font-family:var(--sans);
  border:1px solid var(--line-2);border-radius:13px;background:var(--paper-2);
  color:var(--ink);transition:all .2s;
}
.qsearch input:focus{outline:none;border-color:var(--cinnabar);
  box-shadow:0 0 0 3px rgba(163,58,46,.09)}
.qsearch input::placeholder{color:var(--ink-4)}
.qs-ico{position:absolute;left:16px;top:50%;transform:translateY(-50%);
  color:var(--ink-4);pointer-events:none;display:grid;place-items:center}
.qs-go{position:absolute;right:9px;top:50%;transform:translateY(-50%);
  padding:7px 14px;border-radius:9px;background:var(--ink);color:var(--paper);
  font-size:13px}

.stat-row{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;margin-bottom:8px}
.stat-c{background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:17px 15px;text-align:center}
.stat-c b{display:block;font-family:var(--serif);font-size:27px;
  font-weight:650;line-height:1.2;color:var(--ink)}
.stat-c span{display:block;font-size:11.5px;color:var(--ink-4);
  margin-top:4px;letter-spacing:.08em}

.path-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.path-c{
  position:relative;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:19px 15px;transition:all .22s;overflow:hidden;
}
.path-c::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--pc,var(--cinnabar));opacity:.85}
.path-c:hover{transform:translateY(-3px);box-shadow:var(--shadow);
  border-color:var(--line-2)}
.path-n{font-family:var(--serif);font-size:11px;color:var(--ink-4);
  letter-spacing:.14em;margin-bottom:7px}
.path-t{font-family:var(--serif);font-size:20px;font-weight:650;
  letter-spacing:.14em;margin-bottom:8px;color:var(--pc)}
.path-d{font-size:12px;color:var(--ink-3);line-height:1.75}

.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}

/* 分类卡 */
.cat-c{display:flex;flex-direction:column;gap:8px;background:var(--paper-2);
  border:1px solid var(--line);border-radius:var(--r);padding:17px;
  transition:all .2s;position:relative;overflow:hidden}
.cat-c:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--line-2)}
.cat-top{display:flex;align-items:center;justify-content:space-between;gap:8px}
.cat-name{font-family:var(--serif);font-size:16.5px;font-weight:650;
  letter-spacing:.06em;display:flex;align-items:center;gap:8px}
.cat-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0}
.cat-era{font-size:10.5px;color:var(--ink-4);white-space:nowrap;
  font-family:var(--serif)}
.cat-desc{font-size:12.5px;color:var(--ink-3);line-height:1.75;flex:1}
.cat-meta{font-size:11px;color:var(--ink-4);display:flex;gap:11px;
  padding-top:8px;border-top:1px dashed var(--line)}

/* ============================================================ 修行指导 */
.viewtab{display:inline-flex;background:var(--paper-3);border-radius:11px;
  padding:3px;gap:2px;margin-bottom:22px;border:1px solid var(--line)}
.viewtab button{padding:7px 17px;border-radius:8px;font-size:13.5px;
  color:var(--ink-3);transition:all .18s;white-space:nowrap}
.viewtab button.on{background:var(--paper-2);color:var(--ink);
  font-weight:600;box-shadow:0 1px 3px rgba(60,48,30,.07)}

.stage-band{display:flex;gap:0;margin-bottom:28px;border-radius:var(--r);
  overflow:hidden;border:1px solid var(--line)}
.stage-b{flex:1;padding:15px 12px;text-align:center;background:var(--paper-2);
  border-right:1px solid var(--line);transition:all .2s;position:relative}
.stage-b:last-child{border-right:none}
.stage-b:hover,.stage-b.on{background:var(--paper-3)}
.stage-b.on::after{content:"";position:absolute;left:0;right:0;bottom:0;
  height:3px;background:var(--sc)}
.stage-b i{display:block;font-family:var(--serif);font-size:21px;
  font-weight:650;color:var(--sc);font-style:normal;letter-spacing:.1em}
.stage-b span{display:block;font-size:10.5px;color:var(--ink-4);margin-top:4px}

.ch-item{border:1px solid var(--line);border-radius:var(--r);
  background:var(--paper-2);margin-bottom:12px;overflow:hidden;transition:all .2s}
.ch-item:hover{border-color:var(--line-2)}
.ch-head{display:flex;align-items:center;gap:14px;padding:17px 19px;cursor:pointer}
.ch-no{width:38px;height:38px;border-radius:10px;flex-shrink:0;
  display:grid;place-items:center;font-family:var(--serif);font-size:17px;
  font-weight:650;background:var(--paper-3);color:var(--ink-2);
  border:1px solid var(--line)}
.ch-item.open .ch-no{background:var(--cinnabar);color:#fff;border-color:var(--cinnabar)}
.ch-main{flex:1;min-width:0}
.ch-t{font-family:var(--serif);font-size:17px;font-weight:650;
  letter-spacing:.04em;margin-bottom:3px}
.ch-m{font-size:11.5px;color:var(--ink-4);display:flex;gap:10px;flex-wrap:wrap}
.ch-arrow{color:var(--ink-4);transition:transform .25s;flex-shrink:0}
.ch-item.open .ch-arrow{transform:rotate(90deg)}
.ch-body{display:none;padding:0 19px 19px;border-top:1px solid var(--line)}
.ch-item.open .ch-body{display:block;animation:fadeUp .28s ease}
.ch-intro{font-size:13.5px;color:var(--ink-2);line-height:1.95;
  padding:15px 0;border-bottom:1px dashed var(--line);margin-bottom:4px}

.sec-item{padding:15px 0;border-bottom:1px dashed var(--line)}
.sec-item:last-child{border-bottom:none;padding-bottom:0}
.sec-t{font-family:var(--serif);font-size:15.5px;font-weight:650;
  margin-bottom:8px;display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.sec-t .pg{font-size:10.5px;color:var(--ink-4);font-weight:400}
.sec-gist{font-size:13.5px;color:var(--ink-2);line-height:1.92;margin-bottom:11px}
.sec-pts{margin:0 0 12px;padding:0;list-style:none;display:flex;
  flex-direction:column;gap:6px}
.sec-pts li{font-size:13px;color:var(--ink-2);line-height:1.8;
  padding-left:17px;position:relative}
.sec-pts li::before{content:"";position:absolute;left:4px;top:.72em;
  width:5px;height:5px;border-radius:50%;background:var(--gold);opacity:.7}
.refs{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}
.ref-chip{display:inline-flex;align-items:center;gap:5px;padding:5px 11px;
  border-radius:8px;font-size:12px;background:var(--paper-3);
  border:1px solid var(--line);color:var(--ink-2);transition:all .16s;max-width:100%}
.ref-chip:hover{border-color:var(--cinnabar);color:var(--cinnabar);
  background:rgba(163,58,46,.05)}
.ref-chip b{font-weight:600;overflow:hidden;text-overflow:ellipsis;
  white-space:nowrap;max-width:19em}
.ref-chip span{font-size:10.5px;color:var(--ink-4);flex-shrink:0}
.refs-label{font-size:11px;color:var(--ink-4);letter-spacing:.1em;
  margin-bottom:7px;display:flex;align-items:center;gap:6px}
.refs-label::after{content:"";flex:1;height:1px;background:var(--line)}

/* 实修次第 */
.prac-nav{display:flex;gap:8px;margin-bottom:22px;overflow-x:auto;
  padding-bottom:4px;-webkit-overflow-scrolling:touch}
.prac-nav button{padding:9px 17px;border-radius:10px;font-size:13.5px;
  border:1px solid var(--line);background:var(--paper-2);color:var(--ink-3);
  white-space:nowrap;transition:all .18s;font-family:var(--serif);
  letter-spacing:.05em;flex-shrink:0}
.prac-nav button.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.prac-card{background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:26px}
.prac-h{display:flex;align-items:flex-start;gap:15px;margin-bottom:19px;
  padding-bottom:17px;border-bottom:1px solid var(--line)}
.prac-idx{width:47px;height:47px;border-radius:13px;flex-shrink:0;
  display:grid;place-items:center;background:var(--cinnabar);color:#fff;
  font-family:var(--serif);font-size:22px;font-weight:650}
.prac-hm h3{font-family:var(--serif);font-size:22px;font-weight:650;
  margin:0 0 4px;letter-spacing:.08em}
.prac-hm p{margin:0;font-size:12.5px;color:var(--ink-4);letter-spacing:.06em}
.prac-goal{font-size:14px;color:var(--ink-2);line-height:1.95;
  padding:14px 17px;background:var(--paper-3);border-radius:10px;
  margin-bottom:19px;border-left:3px solid var(--gold)}
.prac-cols{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.prac-col h4{font-size:12px;letter-spacing:.14em;color:var(--ink-4);
  margin:0 0 10px;font-weight:600;text-indent:.14em}
.prac-list{margin:0;padding:0;list-style:none;display:flex;
  flex-direction:column;gap:9px}
.prac-list li{font-size:13px;line-height:1.82;color:var(--ink-2);
  padding-left:19px;position:relative}
.prac-list li::before{content:"◇";position:absolute;left:0;top:0;
  color:var(--jade);font-size:11px}
.prac-list.sign li::before{content:"✓";color:var(--jade)}
.prac-warn{margin-top:19px;padding:13px 16px;border-radius:10px;
  background:rgba(163,58,46,.055);border:1px solid rgba(163,58,46,.18);
  font-size:12.5px;color:var(--cinnabar);line-height:1.85;
  display:flex;gap:9px;align-items:flex-start}
.prac-warn b{flex-shrink:0}

/* ============================================================ 交互修习 */
.learn-tabs{display:flex;gap:9px;margin-bottom:24px;flex-wrap:wrap}
.learn-tab{padding:10px 19px;border-radius:11px;border:1px solid var(--line);
  background:var(--paper-2);font-size:13.5px;color:var(--ink-3);transition:all .18s}
.learn-tab.on{background:var(--ink);color:var(--paper);border-color:var(--ink);
  font-weight:500}
.learn-tab:hover:not(.on){border-color:var(--line-2);background:var(--paper-3)}

/* 人体周天图 */
.body-wrap{display:grid;grid-template-columns:340px 1fr;gap:26px;align-items:start}
.body-fig{background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:18px;position:sticky;top:20px}
.body-fig svg{width:100%;height:auto;display:block}
.acu{cursor:pointer;transition:all .2s}
.acu circle{transition:all .22s}
.acu:hover circle.dot,.acu.on circle.dot{r:7.5;fill:var(--cinnabar)}
.acu.on circle.halo{opacity:.3}
.acu text{font-size:9.5px;fill:var(--ink-3);font-family:var(--serif);
  transition:all .2s;pointer-events:none}
.acu:hover text,.acu.on text{fill:var(--cinnabar);font-weight:600}
.orbit-path{fill:none;stroke-width:2.2;stroke-linecap:round;opacity:.55}
.orbit-flow{fill:none;stroke-width:2.8;stroke-linecap:round;
  stroke-dasharray:14 260;opacity:0}
.orbit-flow.run{opacity:1;animation:flow 4.5s linear infinite}
@keyframes flow{to{stroke-dashoffset:-274}}
.body-ctrl{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap;
  justify-content:center}
.body-info{min-height:200px}
.acu-card{background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:22px;animation:fadeUp .26s ease}
.acu-card h3{font-family:var(--serif);font-size:22px;margin:0 0 5px;
  font-weight:650;letter-spacing:.09em}
.acu-alias{font-size:12px;color:var(--ink-4);margin-bottom:15px;
  letter-spacing:.05em}
.acu-desc{font-size:14px;line-height:1.95;color:var(--ink-2);margin-bottom:16px}
.acu-quote{padding:13px 17px;background:var(--paper-3);border-radius:10px;
  border-left:3px solid var(--gold);font-family:var(--serif);font-size:13.5px;
  line-height:1.9;color:var(--ink-2);margin-bottom:14px}
.acu-quote cite{display:block;font-size:11.5px;color:var(--ink-4);
  margin-top:7px;font-style:normal;text-align:right}

/* 术语卡片 */
.term-groups{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
.tg-btn{padding:7px 15px;border-radius:20px;border:1px solid var(--line);
  background:var(--paper-2);font-size:12.5px;color:var(--ink-3);transition:all .16s}
.tg-btn.on{background:var(--cinnabar);color:#fff;border-color:var(--cinnabar)}
.tg-btn:hover:not(.on){border-color:var(--line-2);background:var(--paper-3)}
.term-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));gap:12px}
.term-c{background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r-s);padding:15px;transition:all .2s;cursor:pointer}
.term-c:hover{border-color:var(--cinnabar);transform:translateY(-2px);
  box-shadow:var(--shadow)}
.term-c.rich{border-left:3px solid var(--gold)}
.term-n{font-family:var(--serif);font-size:16.5px;font-weight:650;
  letter-spacing:.06em;margin-bottom:5px;display:flex;
  align-items:baseline;justify-content:space-between;gap:8px}
.term-n em{font-style:normal;font-size:10.5px;color:var(--ink-4);
  font-weight:400;font-family:var(--sans);flex-shrink:0}
.term-b{font-size:12.5px;color:var(--ink-3);line-height:1.78;
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.term-b.none{color:var(--ink-4);font-style:italic}

/* 弹窗 */
.modal{position:fixed;inset:0;z-index:200;display:none}
.modal.on{display:block}
.modal-mask{position:absolute;inset:0;background:rgba(20,16,10,.42);
  backdrop-filter:blur(3px);animation:fadeIn .2s}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal-box{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(620px,92vw);max-height:84vh;overflow:auto;background:var(--paper-2);
  border:1px solid var(--line-2);border-radius:18px;padding:28px;
  box-shadow:var(--shadow-lg);animation:popIn .26s cubic-bezier(.3,1.2,.5,1)}
@keyframes popIn{from{opacity:0;transform:translate(-50%,-46%) scale(.96)}
  to{opacity:1;transform:translate(-50%,-50%) scale(1)}}
.modal-close{position:absolute;right:16px;top:16px;width:32px;height:32px;
  border-radius:9px;display:grid;place-items:center;color:var(--ink-4);
  font-size:19px;transition:all .16s}
.modal-close:hover{background:var(--paper-3);color:var(--ink)}
.modal-box h2{font-family:var(--serif);font-size:26px;font-weight:650;
  margin:0 0 6px;letter-spacing:.09em}
.modal-meta{font-size:11.5px;color:var(--ink-4);margin-bottom:18px;
  letter-spacing:.06em}
.modal-brief{font-size:14.5px;line-height:2;color:var(--ink);margin-bottom:20px;
  padding:15px 18px;background:var(--paper-3);border-radius:11px;
  border-left:3px solid var(--cinnabar)}
.q-list{display:flex;flex-direction:column;gap:12px}
.q-item{padding:14px 17px;background:var(--paper);border:1px solid var(--line);
  border-radius:11px;transition:all .18s}
.q-item:hover{border-color:var(--line-2)}
.q-text{font-family:var(--serif);font-size:14px;line-height:1.95;
  color:var(--ink-2);margin-bottom:8px}
.q-src{font-size:11.5px;color:var(--cinnabar);display:flex;
  align-items:center;gap:5px}
.q-src:hover{text-decoration:underline}

/* 自测 */
.quiz{background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:28px;max-width:720px;margin:0 auto}
.quiz-bar{height:4px;background:var(--paper-3);border-radius:4px;
  overflow:hidden;margin-bottom:22px}
.quiz-bar i{display:block;height:100%;background:var(--cinnabar);
  border-radius:4px;transition:width .4s ease}
.quiz-n{font-size:11.5px;color:var(--ink-4);letter-spacing:.14em;margin-bottom:11px}
.quiz-q{font-family:var(--serif);font-size:19.5px;line-height:1.72;
  font-weight:600;margin-bottom:22px}
.quiz-opts{display:flex;flex-direction:column;gap:10px}
.quiz-opt{text-align:left;padding:14px 18px;border:1px solid var(--line);
  border-radius:11px;background:var(--paper);font-size:14px;line-height:1.7;
  transition:all .18s;display:flex;gap:12px;align-items:flex-start;color:var(--ink-2)}
.quiz-opt:hover:not(:disabled){border-color:var(--line-2);background:var(--paper-3)}
.quiz-opt b{flex-shrink:0;width:21px;height:21px;border-radius:6px;
  background:var(--paper-3);display:grid;place-items:center;font-size:11.5px;
  color:var(--ink-3);font-weight:600;margin-top:1px}
.quiz-opt.right{border-color:var(--jade);background:rgba(46,111,106,.07)}
.quiz-opt.right b{background:var(--jade);color:#fff}
.quiz-opt.wrong{border-color:var(--cinnabar);background:rgba(163,58,46,.06)}
.quiz-opt.wrong b{background:var(--cinnabar);color:#fff}
.quiz-exp{margin-top:18px;padding:15px 18px;background:var(--paper-3);
  border-radius:11px;font-size:13.5px;line-height:1.9;color:var(--ink-2);
  border-left:3px solid var(--jade);animation:fadeUp .3s}
.quiz-exp b{color:var(--ink);display:block;margin-bottom:5px;font-size:12.5px}
.quiz-acts{display:flex;gap:11px;margin-top:22px;justify-content:flex-end}
.quiz-done{text-align:center;padding:22px 0}
.quiz-score{font-family:var(--serif);font-size:52px;font-weight:650;
  color:var(--cinnabar);line-height:1.1}
.quiz-lv{font-family:var(--serif);font-size:20px;margin:9px 0 6px;letter-spacing:.1em}
.quiz-cm{font-size:13.5px;color:var(--ink-3);margin-bottom:22px;line-height:1.85}

/* 次第图 */
.ladder{display:flex;flex-direction:column;gap:0;position:relative;
  padding-left:8px;max-width:860px}
.rung{display:flex;gap:20px;position:relative;padding-bottom:26px}
.rung:last-child{padding-bottom:0}
.rung-line{position:absolute;left:23px;top:50px;bottom:-2px;width:2px;
  background:linear-gradient(var(--line-2),var(--line));border-radius:2px}
.rung:last-child .rung-line{display:none}
.rung-dot{width:48px;height:48px;border-radius:14px;flex-shrink:0;
  display:grid;place-items:center;font-family:var(--serif);font-size:19px;
  font-weight:650;background:var(--paper-2);border:2px solid var(--rc);
  color:var(--rc);position:relative;z-index:2;transition:all .25s}
.rung.on .rung-dot{background:var(--rc);color:#fff;transform:scale(1.06)}
.rung-body{flex:1;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:18px 21px;transition:all .22s;cursor:pointer}
.rung:hover .rung-body{border-color:var(--line-2);box-shadow:var(--shadow)}
.rung.on .rung-body{border-color:var(--rc)}
.rung-t{font-family:var(--serif);font-size:19px;font-weight:650;
  letter-spacing:.08em;margin-bottom:4px;display:flex;align-items:baseline;
  gap:10px;flex-wrap:wrap}
.rung-t em{font-style:normal;font-size:11.5px;color:var(--ink-4);
  font-family:var(--sans);letter-spacing:.05em}
.rung-g{font-size:13.5px;color:var(--ink-2);line-height:1.9}
.rung-x{display:none;margin-top:15px;padding-top:15px;border-top:1px dashed var(--line)}
.rung.on .rung-x{display:block;animation:fadeUp .3s}

/* ============================================================ 典籍 / 检索 */
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px;
  align-items:center}
.fchip{padding:6px 14px;border-radius:20px;border:1px solid var(--line);
  background:var(--paper-2);font-size:12.5px;color:var(--ink-3);transition:all .16s}
.fchip.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.fchip:hover:not(.on){border-color:var(--line-2);background:var(--paper-3)}

.doc-list{display:flex;flex-direction:column;gap:10px}
.doc-c{display:flex;gap:15px;padding:16px 18px;background:var(--paper-2);
  border:1px solid var(--line);border-radius:var(--r);transition:all .2s;
  align-items:flex-start}
.doc-c:hover{border-color:var(--line-2);box-shadow:var(--shadow);
  transform:translateX(2px)}
.doc-ico{width:40px;height:52px;border-radius:5px;flex-shrink:0;
  display:grid;place-items:center;font-family:var(--serif);font-size:15px;
  font-weight:650;color:#fff;background:var(--dc,var(--ink-3));
  writing-mode:vertical-rl;letter-spacing:.05em;
  box-shadow:1px 1px 0 rgba(0,0,0,.1);position:relative}
.doc-ico::after{content:"";position:absolute;left:3px;top:0;bottom:0;width:1px;
  background:rgba(255,255,255,.28)}
.doc-main{flex:1;min-width:0}
.doc-t{font-family:var(--serif);font-size:16px;font-weight:650;
  margin-bottom:5px;letter-spacing:.03em;line-height:1.5}
.doc-m{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:7px;align-items:center}
.doc-s{font-size:12.5px;color:var(--ink-3);line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.doc-kw{display:flex;gap:5px;flex-wrap:wrap;margin-top:8px}
.doc-kw i{font-style:normal;font-size:10.5px;color:var(--ink-4);
  padding:1px 7px;background:var(--paper-3);border-radius:5px}

.sr-item{padding:17px 19px;background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);margin-bottom:11px;transition:all .2s;cursor:pointer}
.sr-item:hover{border-color:var(--cinnabar);box-shadow:var(--shadow)}
.sr-head{display:flex;align-items:baseline;gap:9px;margin-bottom:8px;flex-wrap:wrap}
.sr-t{font-family:var(--serif);font-size:15.5px;font-weight:650}
.sr-ch{font-size:12px;color:var(--ink-4)}
.sr-score{margin-left:auto;font-size:10.5px;color:var(--ink-4);
  font-family:var(--serif)}
.sr-body{font-size:13.5px;line-height:1.92;color:var(--ink-2);
  font-family:var(--serif)}
.sr-meta{display:flex;gap:9px;margin-top:9px;flex-wrap:wrap;align-items:center}

.searchbox{position:relative;margin-bottom:16px}
.searchbox input{width:100%;padding:14px 108px 14px 44px;font-size:15px;
  border:1px solid var(--line-2);border-radius:12px;background:var(--paper-2);
  color:var(--ink);font-family:var(--sans)}
.searchbox input:focus{outline:none;border-color:var(--cinnabar);
  box-shadow:0 0 0 3px rgba(163,58,46,.09)}
.sb-ico{position:absolute;left:15px;top:50%;transform:translateY(-50%);
  color:var(--ink-4);display:grid;place-items:center}
.sb-go{position:absolute;right:8px;top:50%;transform:translateY(-50%);
  padding:8px 16px;border-radius:9px;background:var(--ink);color:var(--paper);
  font-size:13px}
.sb-clear{position:absolute;right:88px;top:50%;transform:translateY(-50%);
  width:26px;height:26px;border-radius:50%;display:none;place-items:center;
  color:var(--ink-4);font-size:15px;background:var(--paper-3)}
.sb-clear.on{display:grid}

.hint-row{display:flex;gap:7px;flex-wrap:wrap;align-items:center;
  font-size:12px;color:var(--ink-4);margin-bottom:20px}
.hint-chip{padding:4px 11px;border-radius:16px;background:var(--paper-3);
  border:1px solid var(--line);color:var(--ink-3);transition:all .16s;font-size:12px}
.hint-chip:hover{border-color:var(--cinnabar);color:var(--cinnabar)}

.res-bar{display:flex;align-items:center;gap:11px;margin-bottom:14px;
  font-size:12.5px;color:var(--ink-4);flex-wrap:wrap}
.res-bar b{color:var(--cinnabar);font-family:var(--serif);font-size:15px}

/* ============================================================ 问答 */
.ask-wrap{max-width:860px;margin:0 auto}
.ask-hero{text-align:center;padding:26px 0 30px}
.ask-hero .glyph{font-family:var(--serif);font-size:42px;color:var(--cinnabar);
  opacity:.85;margin-bottom:11px}
.ask-hero h1{font-family:var(--serif);font-size:27px;font-weight:650;
  margin:0 0 9px;letter-spacing:.09em}
.ask-hero p{color:var(--ink-3);font-size:13.5px;margin:0;line-height:1.85}

.chat{display:flex;flex-direction:column;gap:20px;margin-bottom:24px}
.msg{display:flex;gap:12px;animation:fadeUp .3s ease}
.msg-av{width:34px;height:34px;border-radius:10px;flex-shrink:0;
  display:grid;place-items:center;font-family:var(--serif);font-size:15px;
  font-weight:650}
.msg.u .msg-av{background:var(--paper-3);color:var(--ink-3);
  border:1px solid var(--line)}
.msg.a .msg-av{background:var(--ink);color:var(--paper)}
.msg-body{flex:1;min-width:0}
.msg.u .msg-body{padding-top:5px;font-size:15px;font-weight:600;
  font-family:var(--serif);letter-spacing:.03em;line-height:1.7}
.ans{background:var(--paper-2);border:1px solid var(--line);
  border-radius:var(--r);padding:20px 22px}
.ans-lead{font-size:14px;line-height:2;color:var(--ink);margin-bottom:4px}
.ans-lead b{color:var(--cinnabar)}
.ans-sec{margin-top:18px}
.ans-h{font-size:11px;letter-spacing:.16em;color:var(--ink-4);
  margin-bottom:10px;display:flex;align-items:center;gap:8px;text-indent:.16em}
.ans-h::after{content:"";flex:1;height:1px;background:var(--line)}
.ev{padding:13px 16px;background:var(--paper);border:1px solid var(--line);
  border-radius:10px;margin-bottom:9px;transition:all .18s}
.ev:hover{border-color:var(--line-2)}
.ev-txt{font-family:var(--serif);font-size:13.5px;line-height:1.95;
  color:var(--ink-2);margin-bottom:8px}
.ev-src{font-size:11.5px;color:var(--ink-4);display:flex;
  align-items:center;gap:6px;flex-wrap:wrap}
.ev-src a{color:var(--cinnabar)}
.ev-src a:hover{text-decoration:underline}
.ans-defs{display:flex;flex-direction:column;gap:11px}
.ans-def{padding:14px 17px;background:rgba(166,124,35,.055);
  border:1px solid rgba(166,124,35,.2);border-radius:11px}
[data-theme="dark"] .ans-def{background:rgba(201,161,90,.07)}
.ans-def b{font-family:var(--serif);font-size:15.5px;letter-spacing:.06em;
  display:block;margin-bottom:5px}
.ans-def p{margin:0;font-size:13px;line-height:1.88;color:var(--ink-2)}
.ans-more{display:flex;gap:8px;flex-wrap:wrap;margin-top:6px}
.followup{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px;
  padding-top:15px;border-top:1px dashed var(--line)}
.fu-chip{padding:6px 13px;border-radius:18px;border:1px solid var(--line);
  background:var(--paper);font-size:12.5px;color:var(--ink-3);transition:all .16s}
.fu-chip:hover{border-color:var(--cinnabar);color:var(--cinnabar);
  background:rgba(163,58,46,.04)}

.askbar{position:sticky;bottom:0;padding:14px 0 18px;
  background:linear-gradient(transparent,var(--paper) 22%);z-index:20}
.askbar-in{position:relative;display:flex;gap:9px;align-items:flex-end;
  background:var(--paper-2);border:1px solid var(--line-2);border-radius:15px;
  padding:8px 8px 8px 16px;box-shadow:var(--shadow)}
.askbar-in:focus-within{border-color:var(--cinnabar);
  box-shadow:0 0 0 3px rgba(163,58,46,.08)}
.askbar textarea{flex:1;border:none;background:none;resize:none;
  font-family:var(--sans);font-size:15px;line-height:1.65;color:var(--ink);
  padding:8px 0;max-height:132px;min-height:26px}
.askbar textarea:focus{outline:none}
.askbar textarea::placeholder{color:var(--ink-4)}
.ask-send{width:38px;height:38px;border-radius:11px;background:var(--ink);
  color:var(--paper);display:grid;place-items:center;flex-shrink:0;
  transition:all .18s}
.ask-send:disabled{opacity:.34;cursor:not-allowed}
.ask-send:not(:disabled):hover{background:var(--cinnabar)}

.thinking{display:flex;align-items:center;gap:10px;padding:16px 20px;
  color:var(--ink-4);font-size:13px}
.thinking .dots{display:inline-flex;gap:4px}
.thinking .dots i{width:5px;height:5px;border-radius:50%;
  background:var(--ink-4);animation:blink 1.3s infinite}
.thinking .dots i:nth-child(2){animation-delay:.18s}
.thinking .dots i:nth-child(3){animation-delay:.36s}
@keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}

/* ============================================================ 阅读器 */
.reader{position:fixed;inset:0;z-index:300;display:none}
.reader.on{display:block}
.rd-mask{position:absolute;inset:0;background:rgba(20,16,10,.4);
  backdrop-filter:blur(3px);animation:fadeIn .22s}
.rd-panel{position:absolute;right:0;top:0;bottom:0;width:min(880px,100%);
  background:var(--paper);display:flex;flex-direction:column;
  box-shadow:var(--shadow-lg);animation:slideIn .32s cubic-bezier(.3,.9,.3,1)}
@keyframes slideIn{from{transform:translateX(3%);opacity:.4}to{transform:none;opacity:1}}
.rd-head{display:flex;align-items:center;gap:10px;padding:0 14px;height:56px;
  border-bottom:1px solid var(--line);flex-shrink:0;
  background:color-mix(in srgb,var(--paper) 92%,transparent);
  backdrop-filter:blur(10px);position:relative;z-index:3}
.rd-back{width:38px;height:38px;border-radius:10px;display:grid;
  place-items:center;color:var(--ink-2);flex-shrink:0}
.rd-back:hover{background:var(--paper-3)}
.rd-title{flex:1;font-family:var(--serif);font-size:16px;font-weight:650;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;letter-spacing:.03em}
.rd-tools{display:flex;gap:5px;flex-shrink:0}
.rd-tool{padding:6px 11px;border-radius:8px;font-size:12.5px;
  color:var(--ink-3);border:1px solid var(--line);transition:all .16s}
.rd-tool:hover{background:var(--paper-3);color:var(--ink)}
.rd-body{flex:1;overflow-y:auto;padding:30px 42px 90px;scroll-behavior:smooth}
.rd-inner{max-width:44em;margin:0 auto}
.rd-doc-h{margin-bottom:28px;padding-bottom:20px;border-bottom:2px solid var(--line)}
.rd-doc-h h1{font-family:var(--serif);font-size:27px;font-weight:650;
  margin:0 0 9px;letter-spacing:.06em;line-height:1.45}
.rd-doc-m{display:flex;gap:9px;flex-wrap:wrap;font-size:11.5px;color:var(--ink-4)}
.rd-ch{margin-bottom:34px;scroll-margin-top:20px}
.rd-ch-t{font-family:var(--serif);font-size:19px;font-weight:650;
  margin:0 0 15px;padding-left:12px;border-left:3px solid var(--cinnabar);
  letter-spacing:.05em;line-height:1.55}
.rd-p{font-family:var(--serif);font-size:16.5px;line-height:2.15;
  color:var(--ink);margin:0 0 1.05em;text-align:justify;
  text-justify:inter-ideograph;letter-spacing:.015em}
.rd-more{text-align:center;padding:26px 0}
.rd-toc{position:absolute;right:0;top:56px;bottom:0;width:300px;
  background:var(--paper-2);border-left:1px solid var(--line);
  overflow-y:auto;padding:16px;transform:translateX(100%);
  transition:transform .28s cubic-bezier(.3,.9,.3,1);z-index:2}
.rd-toc.on{transform:none;box-shadow:-8px 0 24px -8px rgba(60,48,30,.14)}
.rd-toc h4{font-size:11px;letter-spacing:.16em;color:var(--ink-4);
  margin:0 0 12px;padding:0 6px;text-indent:.16em}
.toc-i{display:block;padding:8px 11px;border-radius:8px;font-size:13px;
  color:var(--ink-2);line-height:1.6;transition:all .14s;margin-bottom:2px;
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc-i:hover{background:var(--paper-3);color:var(--ink)}
.toc-i.on{background:var(--cinnabar);color:#fff}

/* Toast */
.toast{position:fixed;left:50%;bottom:88px;transform:translateX(-50%) translateY(14px);
  background:var(--ink);color:var(--paper);padding:10px 20px;border-radius:24px;
  font-size:13px;z-index:900;opacity:0;pointer-events:none;
  transition:all .28s;max-width:88vw;text-align:center;box-shadow:var(--shadow-lg)}
.toast.on{opacity:1;transform:translateX(-50%) translateY(0)}

/* Tabbar */
.tabbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:80;
  height:calc(56px + var(--safe-b));padding-bottom:var(--safe-b);
  background:color-mix(in srgb,var(--paper-2) 94%,transparent);
  backdrop-filter:saturate(180%) blur(16px);
  -webkit-backdrop-filter:saturate(180%) blur(16px);
  border-top:1px solid var(--line)}
.tab{flex:1;display:flex;flex-direction:column;align-items:center;
  justify-content:center;gap:2px;color:var(--ink-4);transition:color .16s;
  padding-top:6px}
.tab i{font-family:var(--serif);font-size:18px;font-style:normal;line-height:1.15}
.tab span{font-size:10px;letter-spacing:.05em}
.tab.on{color:var(--cinnabar)}

/* ============================================================ 响应式 */
@media (max-width:1080px){
  .path-grid{grid-template-columns:repeat(3,1fr)}
  .grid4{grid-template-columns:repeat(3,1fr)}
  .body-wrap{grid-template-columns:300px 1fr}
}
@media (max-width:900px){
  .grid3,.grid4{grid-template-columns:repeat(2,1fr)}
  .body-wrap{grid-template-columns:1fr}
  .body-fig{position:static;max-width:360px;margin:0 auto}
  .prac-cols{grid-template-columns:1fr;gap:18px}
}
@media (max-width:768px){
  body{font-size:14.5px}
  .topbar{display:flex}
  .tabbar{display:flex}
  .sidebar{transform:translateX(-100%);box-shadow:var(--shadow-lg);width:270px}
  .sidebar.on{transform:none}
  .sb-mask{display:none}
  .sb-mask.on{display:block}
  .main{margin-left:0}
  .view{padding:20px 16px calc(78px + var(--safe-b))}
  .hero{padding:28px 22px;border-radius:16px}
  .hero h1{font-size:27px}
  .hero p{font-size:13.5px}
  .pg-title{font-size:24px}
  .stat-row{grid-template-columns:repeat(2,1fr);gap:10px}
  .path-grid{grid-template-columns:repeat(2,1fr)}
  .grid2,.grid3,.grid4{grid-template-columns:1fr}
  .rd-panel{width:100%}
  .rd-body{padding:20px 20px 80px}
  .rd-p{font-size:16px;line-height:2.05}
  .rd-doc-h h1{font-size:22px}
  .rd-toc{width:min(280px,82%)}
  .term-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px}
  .stage-band{flex-wrap:wrap}
  .stage-b{flex:1 1 33.33%;border-bottom:1px solid var(--line)}
  .modal-box{width:94vw;padding:22px;max-height:88vh;border-radius:15px}
  .quiz{padding:20px}
  .quiz-q{font-size:17.5px}
  .prac-card{padding:19px}
  .prac-idx{width:41px;height:41px;font-size:19px;border-radius:11px}
  .prac-hm h3{font-size:19px}
  .askbar{position:fixed;left:0;right:0;bottom:calc(56px + var(--safe-b));
    padding:10px 16px 12px;background:var(--paper);
    border-top:1px solid var(--line);z-index:70}
  .ask-wrap{padding-bottom:80px}
  .doc-c{padding:13px 14px;gap:12px}
  .doc-ico{width:34px;height:45px;font-size:13px}
  .ch-head{padding:14px 15px;gap:11px}
  .ch-body{padding:0 15px 16px}
  .ch-no{width:33px;height:33px;font-size:15px}
  .sec-title{font-size:17px}
  .view .sec{margin-top:30px}
  .toast{bottom:calc(72px + var(--safe-b))}
}
@media (max-width:400px){
  .path-grid,.stat-row{grid-template-columns:1fr 1fr}
  .term-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:24px}
}

/* 打印 */
@media print{
  .sidebar,.topbar,.tabbar,.askbar,.boot{display:none!important}
  .main{margin:0}
  .rd-panel{position:static;width:100%;box-shadow:none}
}