/* 研报精读：左栏分类导航 + 宽版电子书翻页阅读。只在 /zh/research/ 下加载。 */
.rs-app { display: flex; align-items: flex-start; }
.rs-side { position: sticky; top: 0; width: 330px; min-width: 240px; max-width: 50vw; flex: none; height: 100vh; overflow: hidden; display: flex; flex-direction: column; border-right: 1px solid var(--sw-ink); background: var(--sw-paper); }
.rs-drag { flex: none; align-self: stretch; width: 8px; cursor: col-resize; }
.rs-drag:hover { background: var(--sw-line); }
.rs-wide .rs-side, .rs-wide .rs-drag { display: none; }
.rs-tabs { display: flex; border-top: 2px solid var(--sw-ink); border-bottom: 1px solid var(--sw-ink); flex: none; }
.rs-tabs button { flex: 1; border: 0; border-right: 1px solid var(--sw-ink); background: none; padding: 10px 0; font: inherit; font-weight: 700; cursor: pointer; color: var(--sw-ink); }
.rs-tabs button:last-child { border-right: 0; }
.rs-tabs button.is-on { background: var(--sw-ink); color: var(--sw-white); }
.rs-tree { flex: none; max-height: 38vh; overflow: auto; padding: 6px 0; border-bottom: 2px solid var(--sw-ink); }
.rs-tree summary { display: flex; gap: 8px; padding: 6px 16px; font-weight: 800; cursor: pointer; list-style: none; }
.rs-tree summary::-webkit-details-marker { display: none; }
.rs-tree summary::before { content: "＋"; color: var(--sw-grey); width: 14px; }
.rs-tree details[open] > summary::before { content: "－"; }
.rs-leaf { display: flex; width: 100%; gap: 8px; border: 0; background: none; padding: 5px 16px 5px 38px; font: inherit; font-size: 14px; text-align: left; cursor: pointer; color: var(--sw-ink); }
.rs-leaf--all { color: var(--sw-grey); }
.rs-tree summary:hover, .rs-leaf:hover { background: var(--sw-white); }
.rs-leaf.is-on { color: var(--sw-red); font-weight: 800; }
.rs-cnt { margin-left: auto; color: var(--sw-grey); font-size: 12px; font-weight: 400; font-variant-numeric: tabular-nums; }
.rs-tools { flex: none; display: flex; gap: 8px; padding: 10px 16px; border-bottom: 1px solid var(--sw-line); }
.rs-tools input { flex: 1; min-width: 0; padding: 7px 9px; border: 1px solid var(--sw-ink); background: var(--sw-white); font: inherit; font-size: 14px; border-radius: 0; }
.rs-tools button { border: 0; background: var(--sw-ink); color: var(--sw-white); padding: 2px 10px; font: inherit; font-size: 13px; cursor: pointer; white-space: nowrap; }
.rs-list { flex: 1; overflow: auto; }
.rs-item { display: block; padding: 10px 16px; border-bottom: 1px solid var(--sw-line); color: var(--sw-ink); text-decoration: none; font-size: 14px; line-height: 1.5; }
.rs-item:hover { background: var(--sw-white); }
.rs-item[aria-current="page"] { background: var(--sw-white); border-left: 4px solid var(--sw-red); padding-left: 12px; font-weight: 700; }
.rs-item small { display: block; color: var(--sw-grey); font-size: 12px; font-weight: 400; }
.rs-rel { font-weight: 800; }
.rs-rel--high { color: var(--sw-red); }

.rs-main { flex: 1; min-width: 0; padding: 0 32px 72px 26px; }
.rs-book { perspective: 2000px; }
.rs-bar { position: sticky; top: 0; z-index: 3; display: flex; align-items: center; gap: 10px; background: var(--sw-paper); border-bottom: 2px solid var(--sw-ink); padding: 12px 0 0; }
.rs-ptabs { flex: 1; display: flex; overflow-x: auto; min-width: 0; }
.rs-ptabs a { padding: 6px 14px 9px; white-space: nowrap; color: var(--sw-grey); text-decoration: none; border-bottom: 3px solid transparent; }
.rs-ptabs a:hover { color: var(--sw-ink); }
.rs-ptabs a.is-on { color: var(--sw-ink); font-weight: 800; border-bottom-color: var(--sw-red); }
.rs-btn { flex: none; margin-bottom: 8px; border: 1px solid var(--sw-ink); background: var(--sw-ink); color: var(--sw-white); padding: 6px 14px; font: inherit; font-weight: 700; cursor: pointer; }
.rs-btn:hover { background: var(--sw-red); border-color: var(--sw-red); }
.rs-btn:disabled { opacity: .3; cursor: default; background: var(--sw-ink); border-color: var(--sw-ink); }
.rs-btn--ghost { background: none; color: var(--sw-ink); }
.rs-page { background: var(--sw-white); border-left: 4px solid var(--sw-red); padding: 40px clamp(20px, 3.4vw, 56px) 52px; margin-top: 24px; transform-origin: left center; }
.rs-js .rs-page { display: none; }
.rs-js .rs-page.is-on { display: block; animation: rs-flip .38s ease; }
@keyframes rs-flip { from { transform: rotateY(-12deg); opacity: .2; } to { transform: none; opacity: 1; } }
@media (prefers-reduced-motion: reduce) { .rs-js .rs-page.is-on { animation: none; } }

/* 字体：研报页的标题用正文字体族，避免标题子集字体变得过大 */
.rs-h1, .rs-h2, .rs-headline, .rs-page h4 { font-family: var(--sw-font); }
.rs-h1 { margin: 0; }
.rs-h1-t { display: block; font-size: 15px; font-weight: 700; color: var(--sw-grey); line-height: 1.5; margin-bottom: 12px; }
.rs-headline { display: block; font-size: clamp(28px, 3.3vw, 50px); line-height: 1.16; font-weight: 900; max-width: 22em; }
.rs-headline--title { font-size: clamp(24px, 2.6vw, 38px); max-width: 28em; }
.rs-rule { display: block; width: 56px; height: 5px; background: var(--sw-red); margin: 18px 0 28px; }
.rs-lead { font-size: 17px; line-height: 1.75; max-width: 54em; margin: 0; }
.rs-takes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.rs-take { margin: 0; padding: 0 24px; border-left: 1px solid var(--sw-line); font-size: 17px; font-weight: 700; line-height: 1.5; }
.rs-take:first-child { padding-left: 0; border-left: 0; }
.rs-take b { display: block; color: var(--sw-red); font-size: 32px; font-weight: 900; line-height: 1; margin-bottom: 8px; }
.rs-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin-top: 36px; padding: 24px 0; border-top: 2px solid var(--sw-ink); border-bottom: 1px solid var(--sw-ink); }
.rs-stat { padding: 0 24px; border-left: 1px solid var(--sw-line); }
.rs-stat:first-child { padding-left: 0; border-left: 0; }
.rs-stat strong { display: block; font-size: clamp(26px, 2.7vw, 42px); font-weight: 900; line-height: 1.08; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.rs-stat:first-child strong { color: var(--sw-red); }
.rs-stat span { display: block; margin-top: 8px; font-weight: 700; font-size: 14px; }
.rs-stat em { display: block; font-style: normal; color: var(--sw-grey); font-size: 12.5px; }
.rs-sheet { margin-top: 28px; background: var(--sw-paper); border-left: 4px solid var(--sw-ink); padding: 18px 22px; }
.rs-sheet h4 { margin: 0 0 4px; font-size: 14px; }
.rs-sheet p { margin: 0; }
.rs-meta { margin-top: 28px; display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 13px; color: var(--sw-grey); }
.rs-meta b { color: var(--sw-ink); }
.rs-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 12px; }
.rs-tag { border: 1px solid var(--sw-ink); padding: 1px 8px; font-size: 12.5px; color: var(--sw-ink); text-decoration: none; }
.rs-tag:hover { background: var(--sw-ink); color: var(--sw-white); }
.rs-tag--topic { border-color: var(--sw-grey); color: var(--sw-grey); }

.rs-sec + .rs-sec, .rs-sec.rs-two { margin-top: 44px; }
.rs-main > .rs-sec:first-child { margin-top: 0; }
.rs-h2 { font-size: 20px; font-weight: 900; margin: 0 0 14px; padding-top: 10px; border-top: 2px solid var(--sw-ink); }
.rs-mt { margin-top: 28px; }
.rs-pg { color: #a39b91; font-size: 12px; font-weight: 400; white-space: nowrap; }
.rs-muted { color: var(--sw-grey); }
.rs-why { display: block; color: var(--sw-grey); font-size: 13px; line-height: 1.55; margin-top: 3px; }

/* 逻辑图 */
.rs-flow { display: grid; grid-template-columns: minmax(0, 1fr) 40px minmax(0, 1fr) 40px minmax(0, 1fr); }
.rs-fcol h4 { margin: 0 0 8px; font-size: 13px; color: var(--sw-grey); }
.rs-fcol:last-child h4 { color: var(--sw-red); }
.rs-node { background: var(--sw-paper); border-top: 3px solid var(--sw-ink); padding: 10px 12px; margin-bottom: 10px; }
.rs-fcol:last-child .rs-node { background: var(--sw-white); border-top-color: var(--sw-red); outline: 1px solid var(--sw-line); outline-offset: -1px; }
.rs-node b { display: block; font-size: 15px; }
.rs-node span { display: block; font-size: 13px; color: var(--sw-grey); line-height: 1.5; }
.rs-arrow { display: flex; align-items: center; justify-content: center; }
.rs-arrow svg { width: 28px; height: 28px; }

/* 图表 */
.rs-charts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 44px; }
.rs-fig { margin: 0; min-width: 0; }
.rs-fig h4 { margin: 0 0 10px; font-size: 15px; font-weight: 800; }
.rs-fig figcaption { margin-top: 6px; font-size: 12px; color: var(--sw-grey); line-height: 1.5; }
.rs-ch { display: block; width: 100%; height: auto; }
.rs-ch text { font-family: var(--sw-font); }
.rs-legend { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 13px; margin-top: 8px; }
.rs-lg svg { width: 10px; height: 10px; margin-right: 5px; vertical-align: 0; }
.rs-lg.is-hl { color: var(--sw-red); font-weight: 800; }

/* 列表与表格 */
.rs-items { list-style: none; margin: 0; padding: 0; counter-reset: i; }
.rs-items > li { counter-increment: i; position: relative; padding: 10px 0 10px 34px; border-bottom: 1px solid var(--sw-line); font-size: 14.5px; line-height: 1.6; }
.rs-items > li::before { content: counter(i); position: absolute; left: 0; top: 10px; font-weight: 800; color: var(--sw-red); font-variant-numeric: tabular-nums; }
.rs-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 40px; }
.rs-three { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0 32px; }
.rs-doubt .rs-h2 { color: var(--sw-red); border-top-color: var(--sw-red); }
.rs-table { overflow-x: auto; }
.rs-table table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.rs-table th { text-align: left; border-bottom: 2px solid var(--sw-ink); padding: 6px 8px; white-space: nowrap; }
.rs-table td { border-bottom: 1px solid var(--sw-line); padding: 8px; vertical-align: top; }

/* 数据卡片 */
.rs-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 0 28px; border-top: 2px solid var(--sw-ink); }
.rs-card { display: flex; flex-direction: column; gap: 6px; padding: 16px 0 18px; border-bottom: 1px solid var(--sw-line); min-width: 0; }
.rs-card strong { font-size: 22px; font-weight: 900; line-height: 1.2; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.rs-card-m { font-size: 14px; font-weight: 700; line-height: 1.45; }
.rs-card .rs-ch { margin: 4px 0; }
.rs-card q { display: block; color: var(--sw-grey); font-size: 12px; line-height: 1.5; quotes: none; }
.rs-card q::before { content: "原文：「"; } .rs-card q::after { content: "」"; }
.rs-note { margin: 0; background: var(--sw-paper); padding: 16px 18px; font-size: 14.5px; line-height: 1.75; }

/* 上一份 / 下一份 */
.rs-pn { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 32px; border-top: 2px solid var(--sw-ink); padding-top: 14px; }
.rs-pn a { color: var(--sw-ink); text-decoration: none; font-weight: 700; line-height: 1.45; }
.rs-pn a[rel="next"] { text-align: right; }
.rs-pn a span { display: block; color: var(--sw-grey); font-size: 12.5px; font-weight: 400; }
.rs-pn a:hover { color: var(--sw-red); }

/* 研报库首页 */
.rs-feats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.rs-feat { display: grid; align-content: start; gap: 10px; background: var(--sw-white); border-top: 5px solid var(--sw-ink); padding: 20px 20px 18px; color: var(--sw-ink); text-decoration: none; }
.rs-feat:first-child { border-top-color: var(--sw-red); }
.rs-feat:hover { outline: 2px solid var(--sw-ink); outline-offset: -2px; }
.rs-feat-k, .rs-feat-t { font-size: 12.5px; color: var(--sw-grey); }
.rs-feat-h { font-size: 20px; font-weight: 900; line-height: 1.3; }
.rs-feat-p { font-size: 14px; color: var(--sw-grey); }
.rs-feat-s { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; border-top: 1px solid var(--sw-line); padding-top: 10px; }
.rs-feat-s > span { display: grid; font-size: 12px; color: var(--sw-grey); line-height: 1.35; }
.rs-feat-s b { font-size: 22px; color: var(--sw-ink); font-weight: 900; }
.rs-rows { list-style: none; margin: 0; padding: 0; border-top: 2px solid var(--sw-ink); }
.rs-row a { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 4px 28px; padding: 14px 0; border-bottom: 1px solid var(--sw-line); color: var(--sw-ink); text-decoration: none; }
.rs-row a:hover .rs-row-t { color: var(--sw-red); }
.rs-row-t { font-weight: 800; line-height: 1.45; }
.rs-row-h { font-size: 14px; line-height: 1.55; }
.rs-row-m { grid-column: 1 / -1; font-size: 12.5px; color: var(--sw-grey); }
.rs-filter-note { margin: -4px 0 12px; font-size: 14px; }

@media (max-width: 1180px) {
  .rs-stats { grid-template-columns: repeat(2, minmax(0, 1fr)); row-gap: 20px; }
  .rs-stat:nth-child(3) { padding-left: 0; border-left: 0; }
  .rs-charts, .rs-three { grid-template-columns: minmax(0, 1fr); }
  .rs-three > section + section { margin-top: 28px; }
  .rs-feats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 900px) {
  .rs-app { display: block; padding: 0 16px; }
  .rs-side { position: static; width: auto !important; max-width: none; height: auto; border: 1px solid var(--sw-ink); }
  .rs-list { max-height: 52vh; }
  .rs-drag { display: none; }
  .rs-js.rs-has-book .rs-side:not(.is-open) > :not(.rs-side-head) { display: none; }
  .rs-js.rs-has-book .rs-side:not(.is-open) { border: 0; }
  .rs-main { padding: 0 0 56px; }
  .rs-bar { flex-wrap: wrap; }
  .rs-ptabs { order: 3; flex-basis: 100%; }
  .rs-page { padding: 24px 18px 32px; margin-top: 14px; }
  .rs-takes, .rs-two, .rs-feats { grid-template-columns: minmax(0, 1fr); }
  .rs-take { padding: 14px 0 0; border-left: 0; border-top: 1px solid var(--sw-line); margin-top: 14px; }
  .rs-take:first-child { border-top: 0; padding-top: 0; margin-top: 0; }
  .rs-two > section + section { margin-top: 28px; }
  .rs-flow { grid-template-columns: minmax(0, 1fr); }
  .rs-arrow svg { transform: rotate(90deg); }
  .rs-row a { grid-template-columns: minmax(0, 1fr); }
  .rs-pn { grid-template-columns: minmax(0, 1fr); }
  .rs-pn a[rel="next"] { text-align: left; }
}

/* 康奈尔式「老板之问」：左栏问题，右栏一句话回答 */
.rs-cornell dl { margin: 0; border-top: 1px solid var(--sw-ink); }
.rs-cornell dl > div { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 5fr); border-bottom: 1px solid var(--sw-line); }
.rs-cornell dt { font-weight: 800; padding: 12px 20px 12px 0; border-right: 3px solid var(--sw-red); line-height: 1.5; }
.rs-cornell dd { margin: 0; padding: 12px 0 12px 20px; line-height: 1.6; }
.rs-stats + .rs-cornell { margin-top: 36px; }
.rs-why i { font-style: normal; font-weight: 700; color: var(--sw-ink); margin-right: 6px; }
.rs-cred { display: inline-block; font-size: 11px; font-weight: 700; border: 1px solid currentColor; padding: 0 5px; margin-left: 4px; color: var(--sw-grey); vertical-align: 1px; }
.rs-cred--1 { color: var(--sw-ink); }
.rs-cred--4 { color: var(--sw-red); }
@media (max-width: 900px) {
  .rs-cornell dl > div { grid-template-columns: minmax(0, 1fr); }
  .rs-cornell dt { border-right: 0; border-left: 3px solid var(--sw-red); padding: 12px 0 4px 12px; }
  .rs-cornell dd { padding: 0 0 12px 15px; }
}

/* 全屏阅读器：不显示全站页头、页脚和红色竖轴；左栏与正文各自滚动 */
body.rs-body { background-image: none; overflow-anchor: none; }
@media (min-width: 901px) {
  body.rs-body { height: 100vh; overflow: hidden; }
  .rs-app { height: 100vh; }
  .rs-side { height: 100vh; }
  .rs-main { height: 100vh; overflow-y: auto; }
}
.rs-side-head { flex: none; padding: 18px 16px 14px; display: grid; gap: 2px; }
.rs-brand { font-family: var(--sw-font-display); font-size: 24px; font-weight: 900; color: var(--sw-ink); text-decoration: none; line-height: 1.2; }
.rs-brand-sub { font-size: 13px; font-weight: 700; color: var(--sw-red); text-decoration: none; }
.rs-side-nav { display: flex; justify-content: space-between; align-items: baseline; margin-top: 10px; font-size: 13px; }
.rs-side-nav a { color: var(--sw-grey); text-decoration: none; }
.rs-side-nav a:hover { color: var(--sw-ink); }
.rs-langs { display: flex; gap: 12px; }
.rs-langs a[aria-current] { color: var(--sw-ink); font-weight: 700; text-decoration: underline; text-decoration-color: var(--sw-red); text-decoration-thickness: 2px; text-underline-offset: 5px; }
.rs-bar--index { display: block; padding: 18px 0 14px; }
.rs-index-h1 { font-family: var(--sw-font); font-size: 26px; font-weight: 900; margin: 0; line-height: 1.25; }
.rs-index-sub { display: block; color: var(--sw-grey); font-size: 14px; margin-top: 4px; }
.rs-index > .rs-sec:first-of-type { margin-top: 28px; }