/* 资料阅读页 · 书页版（light editorial） */
:root{
  --rd-paper:#f6f4ee;
  --rd-card:#fffdf8;
  --rd-white:#ffffff;
  --rd-ink:#1b3a31;
  --rd-ink-2:#3d554c;
  --rd-muted:#7b867f;
  --rd-gold:#a87f43;
  --rd-gold-soft:#d9c39a;
  --rd-green:#1d4b3f;
  --rd-line:#e4dfd2;
  --rd-line-soft:#eeeae0;
  --rd-serif:"Songti SC","Noto Serif SC","Source Han Serif SC",STSong,SimSun,serif;
  --rd-sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --rd-font:17px;
}
body.reader-page{margin:0;background:var(--rd-paper);color:var(--rd-ink);font-family:var(--rd-sans);-webkit-font-smoothing:antialiased}
body.reader-page[hidden],body.reader-page [hidden]{display:none!important}
body.reader-page a{color:inherit;text-decoration:none}
body.reader-page button{font-family:inherit}
.rd-shell{max-width:1080px;margin:0 auto;padding:0 clamp(18px,4vw,40px) 72px}

/* 顶栏 */
.rd-top{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 0;border-bottom:1px solid var(--rd-line)}
.rd-brand{display:flex;align-items:center;gap:10px;font-size:13px;font-weight:600;letter-spacing:.03em}
.rd-brand img{width:32px;height:32px;object-fit:contain}
.rd-nav{display:flex;gap:18px;font-size:12.5px;color:#65736c}
.rd-nav a{padding:3px 0;border-bottom:1px solid transparent}
.rd-nav a:hover,.rd-nav a.on{border-bottom-color:var(--rd-gold);color:var(--rd-ink)}

/* 封面 */
.rd-cover{padding:34px 0 0}
.rd-jacket{position:relative;background:var(--rd-card);border:1px solid var(--rd-line);box-shadow:0 24px 60px rgba(28,45,39,.09);overflow:hidden}
.rd-jacket:before{content:"";position:absolute;left:0;top:0;bottom:0;width:7px;background:var(--rd-green);z-index:2}
.rd-jacket-media{position:relative;height:clamp(190px,32vw,300px);background:var(--rd-green)}
.rd-jacket-media img{display:block;width:100%;height:100%;object-fit:cover;object-position:center 32%}
.rd-jacket-media:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(16,45,37,.12),rgba(16,45,37,.55))}
.rd-jacket.typographic .rd-jacket-media{display:flex;align-items:flex-end;padding:26px clamp(22px,4vw,40px)}
.rd-jacket.typographic .rd-jacket-media:after{background:linear-gradient(140deg,rgba(255,255,255,.06),rgba(0,0,0,.22))}
.rd-jacket.cover-ncea .rd-jacket-media{background:linear-gradient(135deg,#264b57,#102a33)}
.rd-jacket.cover-horsemanship .rd-jacket-media{background:linear-gradient(135deg,#2f4a34,#132a1c)}
.rd-jacket.cover-foundation .rd-jacket-media{background:linear-gradient(135deg,#4a3f2c,#241d12)}
.rd-ghost-no{position:relative;z-index:1;font-family:var(--rd-serif);font-size:clamp(64px,12vw,110px);line-height:.9;color:rgba(255,255,255,.16);letter-spacing:-.02em}
.rd-edition{position:absolute;z-index:1;left:clamp(22px,4vw,40px);top:20px;padding:6px 11px;border:1px solid rgba(255,255,255,.5);color:#fff;font-size:10.5px;letter-spacing:.18em}
.rd-jacket-body{padding:clamp(24px,4vw,44px) clamp(22px,4.6vw,46px) clamp(26px,4vw,42px)}
.rd-kicker{font-size:11px;letter-spacing:.24em;color:var(--rd-gold);text-transform:uppercase}
.rd-jacket h1{margin:14px 0 0;font-family:var(--rd-serif);font-size:clamp(30px,5.2vw,50px);line-height:1.18;letter-spacing:-.01em;font-weight:600}
.rd-deck{margin:16px 0 0;max-width:620px;font-size:14.5px;line-height:1.85;color:#5d6b64}
.rd-facts{display:flex;flex-wrap:wrap;gap:0;margin:24px 0 0;border-top:1px solid var(--rd-line-soft);border-bottom:1px solid var(--rd-line-soft)}
.rd-facts span{padding:12px 22px 12px 0;margin-right:22px;border-right:1px solid var(--rd-line-soft);font-size:12px;color:var(--rd-muted);letter-spacing:.04em}
.rd-facts span:last-child{border-right:0;margin-right:0}
.rd-facts b{color:var(--rd-ink);font-weight:600;font-size:13px}
.rd-actions{display:flex;flex-wrap:wrap;gap:10px;margin:26px 0 0}
.rd-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border:1px solid var(--rd-green);background:transparent;color:var(--rd-green);font-size:14px;line-height:1;cursor:pointer;transition:background .15s,color .15s,border-color .15s}
.rd-btn.primary{background:var(--rd-green);color:#fff}
.rd-btn.primary:hover{background:#163b31}
.rd-btn.line{border-color:#cfc9b9;color:var(--rd-ink-2)}
.rd-btn.line:hover{border-color:var(--rd-ink)}
.rd-resume{margin:14px 0 0;font-size:12.5px;color:var(--rd-muted)}
.rd-resume a{color:var(--rd-gold);border-bottom:1px solid rgba(168,127,67,.4);padding-bottom:1px}

/* 导读 + 目录 */
.rd-below{max-width:820px;margin:34px auto 0;padding:0 clamp(2px,2vw,8px)}
.rd-intro{padding:24px 0 26px;border-bottom:1px solid var(--rd-line)}
.rd-intro .rd-label{font-size:10.5px;letter-spacing:.2em;color:var(--rd-gold)}
.rd-intro p{margin:10px 0 0;font-size:14.5px;line-height:1.95;color:#4c5d55}
.rd-toc{padding:34px 0 0}
.rd-toc-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:16px}
.rd-toc-head h2{margin:0;font-family:var(--rd-serif);font-size:23px;font-weight:600}
.rd-toc-head span{font-size:11px;letter-spacing:.08em;color:var(--rd-muted)}
.rd-ch-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--rd-line)}
.rd-ch-item{border-bottom:1px solid var(--rd-line)}
.rd-ch-btn{display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:14px;align-items:center;width:100%;padding:18px 4px;border:0;background:transparent;text-align:left;cursor:pointer;transition:background .15s}
.rd-ch-btn:hover{background:rgba(29,75,63,.035)}
.rd-ch-no{font-size:11px;letter-spacing:.12em;color:var(--rd-gold);font-variant-numeric:tabular-nums}
.rd-ch-name{display:block;font-size:16px;line-height:1.5;font-weight:600;color:var(--rd-ink)}
.rd-ch-sum{display:block;margin-top:4px;font-size:12.5px;line-height:1.7;color:var(--rd-muted)}
.rd-ch-go{font-size:15px;color:var(--rd-gold-soft)}
.rd-ch-btn:hover .rd-ch-go{color:var(--rd-gold)}
.rd-tip{margin:30px 0 0;padding:18px 20px;background:#efede4;border-left:3px solid var(--rd-gold-soft);font-size:12.5px;line-height:1.85;color:#5f6d66}
.rd-tip b{color:var(--rd-ink)}

/* 阅读位 */
.rd-reading{padding-top:8px}
.rd-bar{position:sticky;z-index:30;top:0;display:flex;align-items:center;gap:12px;padding:10px 0;background:rgba(246,244,238,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--rd-line)}
.rd-bar .rd-btn{padding:9px 13px;font-size:12px;border-color:#d3cec0}
.rd-bar .rd-btn:hover{border-color:var(--rd-ink)}
.rd-prog{display:flex;align-items:center;gap:9px;flex:1;min-width:0}
.rd-prog-track{flex:1;height:3px;background:#e3ded0;overflow:hidden;min-width:50px}
.rd-prog-track i{display:block;width:0;height:100%;background:var(--rd-gold);transition:width .12s linear}
.rd-prog-text{font-size:11px;color:var(--rd-muted);white-space:nowrap;font-variant-numeric:tabular-nums}
.rd-font{display:flex;align-items:center;gap:4px;flex:none}
.rd-font button{width:36px;height:30px;border:1px solid #d3cec0;background:transparent;color:var(--rd-ink-2);font-size:12px;line-height:1;white-space:nowrap;cursor:pointer;padding:0}
.rd-font button:hover{border-color:var(--rd-ink)}
.rd-font span{font-size:11px;color:var(--rd-muted);width:22px;text-align:center}
.rd-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:48px;align-items:start;padding-top:26px}
.rd-side{position:sticky;top:62px;max-height:calc(100vh - 90px);overflow:auto;padding-right:16px;border-right:1px solid var(--rd-line)}
.rd-side .label{display:block;padding:0 6px 12px;font-size:10.5px;letter-spacing:.18em;color:var(--rd-gold)}
.rd-side ol{list-style:none;margin:0;padding:0}
.rd-side button{display:flex;gap:9px;width:100%;padding:8px 8px;border:0;border-left:2px solid transparent;background:transparent;color:#70807a;font-size:12px;line-height:1.5;text-align:left;cursor:pointer}
.rd-side button:hover{color:var(--rd-ink);background:rgba(29,75,63,.035)}
.rd-side button.on{color:var(--rd-green);border-left-color:var(--rd-gold);background:rgba(168,127,67,.07);font-weight:600}
.rd-side .no{flex:none;width:20px;opacity:.7;font-variant-numeric:tabular-nums}
.rd-article{max-width:700px;min-width:0}
.rd-ch-head{padding:4px 0 26px;border-bottom:1px solid var(--rd-line)}
.rd-ch-meta{display:flex;align-items:center;gap:10px}
.rd-ch-meta .num{font-size:11px;letter-spacing:.18em;color:var(--rd-gold);font-variant-numeric:tabular-nums}
.rd-ch-meta .kick{font-size:10.5px;letter-spacing:.16em;color:var(--rd-muted);text-transform:uppercase}
.rd-ch-head h1{margin:14px 0 0;font-family:var(--rd-serif);font-size:clamp(28px,4.4vw,40px);line-height:1.3;letter-spacing:-.01em;font-weight:600}
.rd-ch-head .sum{margin:14px 0 0;max-width:600px;font-size:13.5px;line-height:1.9;color:#65746d}
.rd-sec{padding:30px 0 26px;border-bottom:1px solid var(--rd-line-soft)}
.rd-sec:last-of-type{border-bottom:0}
.rd-sec-kick{margin-bottom:7px;font-size:10px;letter-spacing:.18em;color:var(--rd-gold);text-transform:uppercase}
.rd-sec h2{margin:0 0 1.05em;font-family:var(--rd-serif);font-size:clamp(20px,3vw,25px);line-height:1.45;font-weight:600;letter-spacing:-.005em;color:var(--rd-ink)}
.rd-sec-sub{margin:-.6em 0 1.4em;font-size:12.5px;line-height:1.8;color:var(--rd-muted)}
.rd-body{font-size:var(--rd-font);line-height:1.95;color:#33463f;letter-spacing:.005em;overflow-wrap:anywhere}
.rd-body p{margin:0 0 1.15em}
.rd-body h3{margin:1.7em 0 .6em;font-size:calc(var(--rd-font) + 3px);line-height:1.5;color:var(--rd-ink);font-weight:600}
.rd-body h4{margin:1.5em 0 .4em;font-size:calc(var(--rd-font) - 1px);line-height:1.6;color:#8a6a35;font-weight:600;letter-spacing:.02em}
.rd-body ul,.rd-body ol{margin:0 0 1.2em;padding-left:1.4em}
.rd-body li{margin:.42em 0;padding-left:.15em}
.rd-body li::marker{color:var(--rd-gold)}
.rd-body strong{color:var(--rd-ink)}
.rd-body blockquote{margin:1.6em 0;padding:20px 22px;border-left:2px solid var(--rd-gold);background:#f1eee3;font-family:var(--rd-serif);font-size:calc(var(--rd-font) + 2px);line-height:1.85;color:#3c4f46}
.rd-body blockquote p:last-child{margin-bottom:0}
.rd-callout{margin:1.5em 0;padding:17px 19px;border:1px solid #e0d5bd;background:linear-gradient(135deg,#f7f2e4,#fbf9f1)}
.rd-callout b{display:block;margin-bottom:6px;font-size:10.5px;letter-spacing:.14em;color:var(--rd-gold)}
.rd-callout p{margin:0;font-size:calc(var(--rd-font) - 2px);line-height:1.85;color:#4a5a52}
.rd-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:10px;margin:1.5em 0}
.rd-card{padding:15px 16px;border:1px solid var(--rd-line);background:var(--rd-white);min-width:0}
.rd-card b{display:block;font-size:calc(var(--rd-font) - 4px);line-height:1.55;color:var(--rd-green);font-weight:600}
.rd-card span{display:block;margin-top:5px;font-size:calc(var(--rd-font) - 5px);line-height:1.75;color:#67756e}
.rd-table{margin:1.5em 0;border:1px solid var(--rd-line);overflow-x:auto;-webkit-overflow-scrolling:touch;background:#fff}
.rd-table table{width:100%;min-width:520px;border-collapse:collapse;font-size:calc(var(--rd-font) - 4px);line-height:1.7}
.rd-table th,.rd-table td{padding:11px 13px;border-bottom:1px solid var(--rd-line-soft);text-align:left;vertical-align:top}
.rd-table th{background:#f2efe5;color:var(--rd-green);font-weight:600;white-space:nowrap;letter-spacing:.03em}
.rd-table tr:last-child td{border-bottom:0}
.rd-note{margin:1.3em 0 .4em;padding:11px 14px;border-left:2px solid var(--rd-gold-soft);background:#f4f2ea;color:#78857e;font-size:12px;line-height:1.8}
.rd-pagemark{margin-top:18px;font-size:10px;letter-spacing:.08em;color:#a9b1ab;text-align:right}
.rd-pager{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);gap:10px;margin-top:26px;padding-top:22px;border-top:1px solid var(--rd-line)}
.rd-pager button{min-width:0;padding:13px 15px;border:1px solid #d8d2c4;background:transparent;color:var(--rd-ink-2);font-size:12px;text-align:left;cursor:pointer;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.rd-pager button:hover:not(:disabled){border-color:var(--rd-ink);color:var(--rd-ink)}
.rd-pager button:disabled{opacity:.4;cursor:not-allowed}
.rd-pager .next{text-align:right}
.rd-pager .toc{text-align:center;padding-left:10px;padding-right:10px}
.rd-done{margin:26px 0 0;padding:22px 24px;border:1px solid #d9c9a6;background:linear-gradient(135deg,#f8f3e5,#fdfbf5)}
.rd-done .label{font-size:10.5px;letter-spacing:.18em;color:var(--rd-gold)}
.rd-done h3{margin:8px 0 0;font-family:var(--rd-serif);font-size:21px;font-weight:600}
.rd-done p{margin:8px 0 0;font-size:12.5px;line-height:1.8;color:#67756e}
.rd-done .links{display:flex;flex-wrap:wrap;gap:9px;margin-top:16px}
.rd-done .links a{padding:10px 15px;border:1px solid var(--rd-green);font-size:12px}
.rd-done .links a.primary{background:var(--rd-green);color:#fff}
.rd-protect{margin:34px 0 0;font-size:11px;line-height:1.8;color:#98a29c;text-align:center}

/* 目录抽屉（移动端） */
.rd-drawer{position:fixed;z-index:80;inset:0 auto 0 0;width:min(84vw,330px);background:var(--rd-paper);border-right:1px solid var(--rd-line);transform:translateX(-102%);transition:transform .2s ease;overflow:auto;padding:20px 18px 34px}
.rd-drawer.open{transform:none}
.rd-drawer-head{display:flex;align-items:center;justify-content:space-between;padding-bottom:14px;border-bottom:1px solid var(--rd-line);font-size:11px;letter-spacing:.16em;color:var(--rd-gold)}
.rd-drawer-head button{flex:none;width:auto;height:auto;padding:0 2px;border:0;background:transparent;font-size:24px;line-height:1;color:var(--rd-ink);cursor:pointer}
.rd-drawer ol{list-style:none;margin:12px 0 0;padding:0}
.rd-drawer ol button{display:flex;gap:9px;width:100%;padding:10px 8px;border:0;background:transparent;color:#65746d;font-size:13px;line-height:1.5;text-align:left;cursor:pointer}
.rd-drawer ol button.on{color:var(--rd-green);font-weight:600;background:rgba(168,127,67,.08)}
.rd-backdrop{position:fixed;inset:0;z-index:79;background:rgba(18,38,31,.4)}
.rd-drawer .toggle{display:none}

/* 未登录 / 无权益 */
.rd-gate{max-width:560px;margin:60px auto 0;padding:30px 28px;border:1px solid var(--rd-line);background:var(--rd-card)}
.rd-gate .k{font-size:10.5px;letter-spacing:.2em;color:var(--rd-gold)}
.rd-gate h2{margin:12px 0 0;font-family:var(--rd-serif);font-size:26px;line-height:1.4;font-weight:600}
.rd-gate p{margin:12px 0 0;font-size:13.5px;line-height:1.85;color:#65746d}
.rd-gate .acts{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}

/* 学校笔记 */
.school-search-wrap{display:flex;align-items:center;gap:14px;margin:22px 0 0;border-bottom:1px solid var(--rd-line);padding-bottom:8px}
.school-search{flex:1;min-width:0;border:0;background:transparent;padding:9px 0;font-size:15px;color:var(--rd-ink);outline:none}
.school-count{font-size:12px;color:var(--rd-gold);white-space:nowrap}
.school-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:10px;margin-top:18px}
.school-item{padding:15px 16px;border:1px solid var(--rd-line);background:var(--rd-card);cursor:pointer}
.school-item:hover{border-color:var(--rd-gold-soft)}
.school-item b{display:block;font-size:14px;line-height:1.5}
.school-item span{display:block;margin-top:6px;font-size:12px;line-height:1.65;color:var(--rd-muted)}
.school-empty{margin-top:22px;padding:22px;border:1px dashed #d3cec0;color:var(--rd-muted);font-size:13px;text-align:center}
.school-article{max-width:720px;margin:26px auto 0;font-size:var(--rd-font);line-height:1.95;color:#33463f}
.school-article h1{margin:1.4em 0 .5em;font-family:var(--rd-serif);font-size:clamp(24px,3.4vw,31px);line-height:1.35;font-weight:600;color:var(--rd-ink)}
.school-article h1:first-child{margin-top:0}
.school-article h2{margin:1.3em 0 .45em;font-size:20px;line-height:1.5;color:var(--rd-ink)}
.school-article h3{margin:1.3em 0 .4em;font-size:17px;line-height:1.55;color:#8a6a35}
.school-article p{margin:0 0 1.1em}
.school-article ul,.school-article ol{margin:0 0 1.2em;padding-left:1.4em}
.school-article li{margin:.4em 0}
.school-article li::marker{color:var(--rd-gold)}
.school-article hr{margin:2em 0;border:0;border-top:1px solid var(--rd-line)}
.school-article strong{color:var(--rd-ink)}
.rd-school-head{max-width:720px;margin:0 auto}

@media(max-width:900px){
  .rd-layout{display:block;padding-top:16px}
  .rd-side{display:none}
  .rd-drawer .toggle{display:inline-flex}
  .rd-bar{gap:8px}
  .rd-bar .rd-btn{padding:8px 10px}
  .rd-article{max-width:none}
  .rd-top nav{display:none}
  .rd-pager{grid-template-columns:1fr 1fr}
  .rd-pager .toc{grid-column:1/-1;order:3}
}
@media(max-width:620px){
  .rd-shell{padding:0 16px 56px}
  .rd-cover{padding-top:18px}
  .rd-jacket-body{padding:22px 20px 26px}
  .rd-facts span{padding-right:14px;margin-right:14px;font-size:11px}
  .rd-actions .rd-btn{flex:1}
  .rd-below{margin-top:26px}
  .rd-ch-btn{grid-template-columns:40px minmax(0,1fr) auto;gap:10px;padding:16px 2px}
  .rd-ch-name{font-size:15px}
  .rd-bar{flex-wrap:wrap;row-gap:8px}
  .rd-prog{order:3;flex-basis:100%}
  .rd-body{font-size:var(--rd-font);line-height:1.92}
  .rd-cards{grid-template-columns:1fr}
  .rd-table table{min-width:0;table-layout:fixed}
  .rd-table th,.rd-table td{padding:9px 8px;white-space:normal;overflow-wrap:anywhere}
  .rd-protect{text-align:left}
  .rd-gate{margin-top:32px;padding:24px 20px}
}