/*
 * Economic Theory at CUHK: the styles of the public pages, also loaded by the site editor (which adds
 * site/admin/admin.css). Styled after the CUHK Business School website style guide (2026, MCO):
 * Myriad Pro, primary #5C33AD / #392064, utility greys, white header with hanging school logo,
 * lavender top banner, event list and event content patterns.
 *
 * Screen widths: phones up to 639px, tablets 640-1023px, desktops from 1024px. A few rules use finer
 * steps: below 560px (header, footer), below 768px (seminar lists), from 768px, 1180px (logos) and
 * 1440px (banner).
 *
 * Sections, in order: fonts; tokens; base; prototype banner and data notice; header; top banner;
 * breadcrumb; buttons; event list; event meta panel; home; past seminar rows; filters; seminar detail;
 * about; footer, with the reduced-motion and print rules; people; other activities; home at a glance;
 * Upcoming / Past tabs; topics and search; shared rules.
 */

/* ---------- Fonts (Myriad Pro, as served by bschool.cuhk.edu.hk) ---------- */
@font-face {
  font-family: "Myriad Pro";
  src: url("../fonts/myriadpro-light.woff") format("woff");
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Myriad Pro";
  src: url("../fonts/myriadpro-regular.woff") format("woff");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Myriad Pro";
  src: url("../fonts/myriadpro-semibold.woff") format("woff");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Myriad Pro";
  src: url("../fonts/myriadpro-semibold-italic.woff") format("woff");
  font-weight: 600;
  font-style: italic;
  font-display: swap;
}
@font-face {
  font-family: "Myriad Pro";
  src: url("../fonts/myriadpro-bold.woff") format("woff");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

/* ---------- Tokens (from the style guide) ---------- */
:root {
  --purple: #5c33ad; /* Primary */
  --purple-dark: #392064; /* Primary (dark) */
  --orange: #fdb015; /* Accent used on event meta panels */
  --ink: #3d3d3d; /* Content Grey 2 */
  --grey-959: #686868; /* Utility */
  --grey-595: #595959; /* Utility */
  --grey-808: #626262;
  --menu: #222222;
  --panel: #f2f3f4; /* Utility light grey */
  --section-grey: #f2f2f2;
  --btn-grey: #e3e3e3;
  --line: #d9d9d9;
  --white: #ffffff;

  --font: "Myriad Pro", "Noto Sans TC", "Noto Sans SC", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --pad-x: 24px;
  --container: 1320px;
}

@media (min-width: 1024px) {
  :root {
    --pad-x: 62px;
  }
}

/* ---------- Base ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  /* Where scroll bars take up room (Windows, or a Mac with a mouse), keep that room on every page, so the
     layout does not move sideways when a page becomes long enough to scroll as its content arrives. */
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  font-weight: 300;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6,
p,
dl,
dd,
figure,
blockquote {
  margin: 0;
}
h1,
h2,
h3,
h4 {
  font-weight: inherit;
  font-size: inherit;
}
ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
img {
  display: block;
  max-width: 100%;
  height: auto;
}
button {
  font: inherit;
}
b,
strong {
  font-weight: 600;
}
[hidden] {
  display: none !important;
}

a {
  color: var(--purple);
  text-decoration: none;
}
a:hover {
  color: var(--purple-dark);
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--purple);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--purple);
  color: var(--white);
  font-weight: 600;
}
.skip-link:focus {
  top: 12px;
  color: var(--white);
}

.container {
  width: 100%;
  max-width: calc(var(--container) + 2 * var(--pad-x));
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

.section {
  padding: 40px 0;
}
.section-grey {
  background: var(--section-grey);
}
@media (min-width: 1024px) {
  .section {
    padding: 60px 0;
  }
}
/* A section that follows a page introduction (People, About) starts closer to it. */
.section.section--after-intro {
  padding-top: 24px;
}

/* Typography per guide: H1 uppercase purple, H2 purple, H3 16/700, H4 16/600 */
.h1,
.page-title {
  font-size: 28px;
  line-height: 38px;
  font-weight: 400;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--purple);
}
.h2,
.section-title {
  font-size: 28px;
  line-height: 1.3;
  font-weight: 400;
  color: var(--purple);
}
.section-title {
  text-transform: uppercase;
  letter-spacing: 0.07em;
}
.h3 {
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
  color: var(--ink);
}
.subtitle {
  font-size: 16px;
  line-height: 24px;
  font-weight: 600;
  color: var(--purple);
}
/* The home page's "Also coming up" heading, just above its list of seminars. */
.subtitle.subtitle--before-list {
  margin-bottom: 14px;
}

.prose p + p {
  margin-top: 22px;
}
.prose a {
  text-decoration: underline;
  text-underline-offset: 2px;
}
/* Editable wording (site/data/pages.js): one or more paragraphs in a .rich block */
.prose .rich + p {
  margin-top: 22px;
}
.page-intro .rich p + p {
  margin-top: 10px;
}
.page-intro .rich a {
  text-decoration: underline;
  text-underline-offset: 2px;
}
.contact-line + .contact-line,
[data-contact-only] + .contact-line {
  margin-top: 6px;
}
/* Contact fades in and out without restarting from transparent on repeated clicks. */
.contact-block {
  scroll-margin-top: 32px;
  border-radius: 3px;
  background-color: rgba(92, 51, 173, 0);
  box-shadow: 0 0 0 12px rgba(92, 51, 173, 0);
  transition:
    background-color 0.8s ease-out,
    box-shadow 0.8s ease-out;
}
.contact-block.is-highlighted {
  background-color: rgba(92, 51, 173, 0.075);
  box-shadow: 0 0 0 12px rgba(92, 51, 173, 0.075);
  transition-duration: 0.2s;
}
/* Keep the target focusable without a browser-dependent ring after a tap/click. */
.contact-block h2[data-contact-focus="pointer"]:focus {
  outline: none;
}
.contact-block h2[data-contact-focus="keyboard"]:focus {
  outline: 2px solid var(--purple);
  outline-offset: 2px;
}

/* ---------- Prototype banner and data notice ---------- */
.draft-banner {
  background: #fff4dc;
  border-bottom: 1px solid #f6d58e;
  color: var(--ink);
  font-size: 14px;
  line-height: 20px;
  font-weight: 400;
}
.draft-banner .container {
  padding-top: 8px;
  padding-bottom: 8px;
}
.draft-banner strong {
  font-weight: 700;
}
/* "Some information could not be loaded…" at the top of the page. */
.data-notice {
  padding: 16px 24px;
  background: #fff2cf;
  color: #4d3900;
  border-bottom: 2px solid #785600;
}

/* ---------- Header ---------- */
.site-header {
  position: relative;
  z-index: 40;
  background: var(--white);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}
.header-inner {
  display: flex;
  align-items: center;
  gap: 16px;
  height: 84px;
  max-width: calc(var(--container) + 2 * var(--pad-x));
  margin: 0 auto;
  padding: 0 0 0 var(--pad-x);
}
/* Co-branding lock-up (CUHK Business School Brand Book 2.1.6; MCO, 29 Sep 2026): the Business School's
   extended logo on the left and the Economics logo on the right, the same height (--logo-h). Clear space of
   at least 0.2 × the width of the Business School logo (its mark is 0.94 × its height) is kept around each
   logo, with the optional dividing line in the middle. */
.cobrand {
  --logo-h: 44px;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: calc(var(--logo-h) * 0.2);
}
.cobrand a {
  display: block;
  flex: none;
}
.cobrand img {
  display: block;
  height: var(--logo-h);
  width: auto;
  max-width: none;
}
.cobrand .logo-divider {
  width: 1px;
  height: calc(var(--logo-h) * 0.8);
  background: var(--line);
  flex: none;
}
.header-logos {
  min-width: 0;
  flex: 0 1 auto;
}
@media (min-width: 768px) {
  .header-logos {
    --logo-h: 52px;
  }
}

.main-nav {
  margin-left: auto;
}
.main-nav ul {
  display: flex;
  align-items: center;
  gap: 32px;
}
.main-nav a {
  display: inline-block;
  color: var(--menu);
  font-size: 18px;
  line-height: 28px;
  font-weight: 400;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover {
  color: var(--purple);
  text-decoration: none;
}
.main-nav a[aria-current="page"] {
  color: var(--purple);
  border-bottom-color: var(--purple);
}

.header-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  flex: none;
}
.header-icon img {
  width: 22px;
  height: 22px;
}
.header-search {
  margin-left: 8px;
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: var(--grey-595);
}
.menu-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  margin: 0;
  background: currentColor;
  transition:
    transform 0.2s ease,
    opacity 0.2s ease;
}
.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}
.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

@media (min-width: 1024px) {
  .header-inner {
    height: 120px;
    padding-right: var(--pad-x);
    gap: 24px;
  }
  .header-logos {
    --logo-h: 60px;
  }
}
@media (min-width: 1180px) {
  .header-logos {
    --logo-h: 72px;
  }
}

/* Below 1024px the nav collapses to the menu button. */
@media (max-width: 1023px) {
  .header-inner {
    padding-right: 8px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.08);
    border-top: 1px solid #e2e3e4;
  }
  .main-nav.is-open {
    display: block;
  }
  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0 var(--pad-x) 12px;
  }
  .main-nav li {
    border-bottom: 1px solid #e2e3e4;
  }
  .main-nav a {
    display: block;
    padding: 14px 0;
    border-bottom: 0;
  }
  .main-nav a[aria-current="page"] {
    font-weight: 600;
  }
  .menu-toggle {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 44px;
    height: 44px;
    margin-left: auto; /* the menu button and the search icon on the right */
  }
  .header-search {
    margin-left: 0;
  }
}

/* Phones: the lock-up gets its own full-width row, with search and menu below it on the right,
   so the two logos stay large enough to read (about 40px high on a 375px screen). */
@media (max-width: 559px) {
  .header-inner {
    height: auto;
    flex-wrap: wrap;
    row-gap: 0;
    padding-top: 14px;
    padding-bottom: 2px;
  }
  .header-logos {
    flex: 1 1 100%;
    --logo-h: clamp(28px, calc((100vw - 64px) / 7.92), 44px);
  }
}

/* ---------- Top banner ---------- */
/* The photo comes in three sizes. Below 1024px the title covers more of it, so a darker tint keeps the
   white title readable. */
.top-banner {
  background-color: #9ca3c1;
  background-image: linear-gradient(rgba(57, 32, 100, 0.52), rgba(57, 32, 100, 0.52)), url("../img/banner-mobile.jpg");
  background-size: cover;
  background-position: center bottom;
  background-repeat: no-repeat;
}
.top-banner .container {
  min-height: 128px;
  display: flex;
  align-items: center;
}
.top-banner-title {
  color: var(--white);
  font-size: 20px;
  line-height: 1.35;
  font-weight: 400;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 20px 0;
}
@media (min-width: 640px) {
  .top-banner {
    background-image:
      linear-gradient(rgba(57, 32, 100, 0.52), rgba(57, 32, 100, 0.52)), url("../img/banner-tablet.jpg");
  }
}
@media (min-width: 1024px) {
  .top-banner {
    background-image: linear-gradient(rgba(57, 32, 100, 0.2), rgba(57, 32, 100, 0.2)), url("../img/banner.jpg");
  }
  .top-banner .container {
    min-height: 180px;
  }
  .top-banner-title {
    font-size: 34px;
  }
}
@media (min-width: 1440px) {
  .top-banner .container {
    min-height: 236px;
  }
  .top-banner-title {
    font-size: 44px;
  }
}

/* ---------- Breadcrumb ---------- */
.breadcrumbs {
  padding-top: 24px;
  font-size: 15px;
  line-height: 22px;
  font-weight: 400;
  color: var(--grey-959);
}
.breadcrumbs a {
  color: var(--grey-959);
}
.breadcrumbs a:hover {
  color: var(--purple);
}
.breadcrumbs .sep {
  margin: 0 10px;
}

.page-intro {
  padding-top: 24px;
  padding-bottom: 8px;
}
.page-intro .page-title {
  margin-bottom: 12px;
}
.page-intro p {
  max-width: 60em;
}

/* ---------- Buttons ---------- */
.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 18px;
  padding: 6px 20px;
  background: var(--btn-grey);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
  border: 0;
  cursor: pointer;
  transition:
    background-color 0.2s ease,
    color 0.2s ease;
}
.link-btn svg {
  width: 16px;
  height: 16px;
  color: var(--purple-dark);
  flex: none;
  transition: color 0.2s ease;
}
.link-btn:hover {
  background: var(--purple);
  color: var(--white);
  text-decoration: none;
}
.link-btn:hover svg {
  color: var(--white);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 8px 22px;
  background: var(--purple);
  color: var(--white);
  font-family: var(--font);
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
  border: 0;
  cursor: pointer;
  transition: background-color 0.2s ease;
}
.btn-primary svg {
  width: 16px;
  height: 16px;
  flex: none;
}
.btn-primary:hover {
  background: var(--purple-dark);
  color: var(--white);
  text-decoration: none;
}

/* Border-box tags (event list) — used as small links on seminar cards */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  border: 1px solid var(--grey-959);
  color: var(--ink);
  font-size: 12px;
  line-height: 20px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  background: var(--white);
  cursor: pointer;
  font-family: var(--font);
}
a.tag:hover,
button.tag:hover {
  border-color: var(--purple);
  color: var(--purple);
  text-decoration: none;
}
.tag svg {
  width: 14px;
  height: 14px;
}

/* ---------- Event list (seminar cards) ---------- */
.event-list {
  display: grid;
  gap: 20px;
}

.event {
  display: flex;
  background: var(--white);
}
.event__date {
  flex: 0 0 200px;
  background: var(--purple);
  color: var(--white);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 24px 12px;
  gap: 4px;
}
.event__date .d {
  font-size: 64px;
  line-height: 1;
  font-weight: 300;
}
.event__date .m {
  font-size: 16px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-weight: 400;
}
.event__date .w {
  font-size: 15px;
  font-weight: 300;
  opacity: 0.9;
}
.event__date .today {
  margin-top: 8px;
  padding: 2px 10px;
  background: var(--orange);
  color: var(--menu);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.event__content {
  flex: 1;
  min-width: 0;
  padding: 22px 28px 24px 30px;
}
.event__subtitle {
  font-size: 12px;
  line-height: 20px;
  font-weight: 400;
  color: var(--purple);
  margin-bottom: 4px;
}
.event__title {
  font-size: 22px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 16px;
}
.event__title a {
  color: inherit;
}
.event__title a:hover {
  color: var(--purple);
}
.event__title.tba {
  color: var(--grey-595);
  font-weight: 600;
}

.event__table {
  display: grid;
  gap: 4px;
  margin-bottom: 18px;
}
.event__item {
  display: grid;
  grid-template-columns: 90px minmax(0, 1fr);
  gap: 8px;
}
.event__item dt {
  font-weight: 600;
}
.event__item dd {
  font-weight: 300;
}

.event__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 767px) {
  .event {
    flex-direction: column;
  }
  .event__date {
    flex: none;
    flex-direction: row;
    justify-content: flex-start;
    align-items: baseline;
    padding: 14px 16px;
    gap: 10px;
  }
  .event__date .d {
    font-size: 36px;
  }
  .event__date .today {
    margin: 0 0 0 auto;
    align-self: center;
  }
  .event__content {
    padding: 18px 16px 20px 20px;
  }
  .event__title {
    font-size: 18px;
  }
  .event__item {
    grid-template-columns: 74px minmax(0, 1fr);
  }
}

/* ---------- Event meta panel (guide: event content sidebar) ---------- */
.meta-panel {
  background: var(--panel);
  border-left: 7px solid var(--orange);
  padding: 22px 32px 26px 19px;
}
.meta-panel .subtitle {
  margin-bottom: 6px;
}
.meta-panel .meta-title {
  font-size: 20px;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 18px;
}
.meta-panel .meta-title a {
  color: var(--ink);
}
.meta-panel .meta-title a:hover {
  color: var(--purple);
}
.meta-panel dl {
  display: grid;
  gap: 14px;
}
.meta-panel dt {
  font-size: 16px;
  line-height: 24px;
  font-weight: 700;
  color: var(--purple);
  margin-bottom: 4px;
}
.meta-panel dd {
  font-size: 16px;
  line-height: 20px;
  font-weight: 600;
  color: var(--ink);
}
.meta-panel dd .aff {
  display: block;
  font-weight: 300;
  margin-top: 2px;
}
.meta-panel dd a {
  font-weight: 400;
}
.meta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- Home ---------- */
.home-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 60px;
  align-items: start;
}
.home-intro .section-title {
  margin-bottom: 18px;
}
.home-intro .prose {
  margin-bottom: 26px;
  max-width: 42em;
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px 24px;
  margin-bottom: 26px;
}
.more-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--purple);
}
.more-link svg {
  width: 16px;
  height: 16px;
}

@media (max-width: 1023px) {
  .home-intro {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ---------- Past seminar rows ---------- */
.past-list {
  border-top: 1px solid var(--line);
}
.past-row {
  border-bottom: 1px solid var(--line);
}
.past-row a {
  display: grid;
  grid-template-columns: 140px minmax(0, 0.9fr) minmax(0, 1.5fr);
  gap: 24px;
  padding: 16px 12px;
  color: var(--ink);
}
.past-row a:hover {
  background: var(--white);
  text-decoration: none;
}
.section:not(.section-grey) .past-row a:hover {
  background: var(--section-grey);
}
.past-row .p-date {
  color: var(--grey-595);
  font-weight: 400;
  white-space: nowrap;
}
.past-row .p-speaker {
  font-weight: 600;
}
.past-row .p-aff {
  display: block;
  font-weight: 300;
}
.past-row .p-title {
  color: var(--purple);
  font-weight: 400;
}
.past-row a:hover .p-title {
  text-decoration: underline;
}
@media (max-width: 767px) {
  .past-row a {
    grid-template-columns: 1fr;
    gap: 2px;
    padding: 14px 4px;
  }
}

.year-group + .year-group {
  margin-top: 44px;
}
.year-group .h2 {
  margin-bottom: 14px;
}
.year-group .count {
  font-size: 16px;
  color: var(--grey-595);
  margin-left: 10px;
}

.month-group + .month-group {
  margin-top: 44px;
}
.month-group .h2 {
  margin-bottom: 18px;
}

/* ---------- Filters (guide: input fields) ---------- */
.filter {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 24px;
  align-items: flex-end;
  margin-bottom: 20px;
}
.input-field {
  position: relative;
  flex: 1 1 320px;
  max-width: 520px;
}
.input-field input {
  width: 100%;
  font: inherit;
  font-size: 16px;
  font-weight: 300;
  color: var(--ink);
  padding: 4px 34px 4px 0;
  border: 0;
  border-bottom: 1px solid #a6a6a6;
  background: transparent;
  border-radius: 0;
  height: 36px;
}
.input-field input::placeholder {
  color: var(--grey-959);
}
.input-field input:focus {
  outline: none;
  border-bottom-color: var(--purple);
}
.input-field img {
  position: absolute;
  right: 4px;
  bottom: 9px;
  width: 18px;
  height: 18px;
  pointer-events: none;
}
.filter select {
  font: inherit;
  font-size: 16px;
  font-weight: 600;
  color: var(--ink);
  height: 36px;
  padding: 6px 34px 6px 15px;
  border: 1px solid #acacac;
  border-radius: 0;
  background: var(--white) url("../img/select-arrow.svg") no-repeat right 12px center;
  appearance: none;
  -webkit-appearance: none;
}
.filter select:focus {
  outline: 2px solid var(--purple);
  outline-offset: 0;
}
.result-count {
  color: var(--grey-595);
  margin-bottom: 18px;
}
.empty-state {
  padding: 28px;
  text-align: center;
  background: var(--panel);
  color: var(--grey-595);
}

/* ---------- Seminar detail (guide: event content) ---------- */
.post-head {
  padding-top: 28px;
  padding-bottom: 8px;
}
.post-head .subtitle {
  margin-bottom: 8px;
}
.post-title {
  font-size: 28px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--ink);
  max-width: 30em;
  margin-bottom: 10px;
}
.post-title.tba {
  color: var(--grey-595);
}
.post-speaker {
  font-size: 18px;
  line-height: 26px;
}
.post-speaker strong {
  font-weight: 600;
}

.post__content {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 60px;
  align-items: start;
}
.post__text .h2 {
  margin-bottom: 14px;
}
.post__text .prose {
  max-width: 46em;
}
.post__text .missing {
  color: var(--grey-595);
  font-style: italic;
}
.post__text .note {
  margin-top: 22px;
  font-size: 15px;
  color: var(--grey-595);
}
.post__text .paper-link {
  margin-top: 24px;
}

@media (min-width: 1024px) {
  .post-title {
    font-size: 34px;
  }
}
@media (max-width: 1023px) {
  .post__content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .post__meta {
    order: -1;
  }
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 340px;
  gap: 60px;
  align-items: start;
}
.about-grid .h2 {
  margin: 36px 0 12px;
}
.about-grid .prose > .h2:first-child {
  margin-top: 0;
}
.organisers {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px 32px;
}
.organisers li {
  display: grid;
  gap: 2px;
  padding-left: 14px;
  border-left: 3px solid var(--purple);
}
.organisers .org-name {
  font-weight: 600;
}
.organisers .org-name a {
  text-decoration: none;
}
.organisers .org-name a:hover {
  text-decoration: underline;
}
.organisers .org-unit {
  font-size: 15px;
  line-height: 22px;
  color: var(--grey-595);
}
.people {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.person {
  background: var(--panel);
  padding: 16px 18px;
}
.person .name {
  font-weight: 600;
}
.tbc {
  display: inline-block;
  padding: 0 6px;
  margin-left: 4px;
  font-size: 11px;
  line-height: 18px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #7a5200;
  background: #ffe6b0;
  vertical-align: 1px;
}
@media (max-width: 1023px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

/* ---------- Footer (guide: footer) ---------- */
.site-footer {
  border-top: 1px solid #e2e3e4;
  background: var(--white);
}
.footer__wrapper {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 32px;
  padding-top: 40px;
  padding-bottom: 40px;
}
/* MCO (29 Sep): the same co-branding lock-up as the header (.cobrand), and no standalone CUHK emblem
   (the Economics logo and the extended Business School logo already name the University). */
.footer__logos {
  --logo-h: 52px;
}
.footer__contact {
  margin-top: 18px;
  font-size: 15px;
  color: var(--grey-595);
  display: grid;
  gap: 2px;
}
.footer__contact a {
  color: var(--grey-595);
  text-decoration: underline;
}
.footer__right {
  text-align: right;
}
.footer__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px 28px;
  margin-bottom: 10px;
}
.footer__links a {
  color: var(--grey-595);
  font-size: 16px;
  font-weight: 600;
}
.footer__links a:hover {
  color: var(--purple);
}
.copyright {
  font-size: 15px;
  line-height: 20px;
  font-weight: 300;
  color: var(--grey-808);
}

@media (max-width: 1023px) {
  .footer__wrapper {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .footer__logos {
    justify-content: center;
  }
  .footer__contact {
    justify-items: center;
  }
  .footer__right {
    text-align: center;
  }
  .footer__links {
    justify-content: center;
  }
}
@media (max-width: 559px) {
  .footer__logos {
    --logo-h: clamp(28px, calc((100vw - 64px) / 7.92), 44px);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    transition: none !important;
  }
}

@media print {
  .draft-banner,
  .main-nav,
  .menu-toggle,
  .header-search,
  .event__bottom,
  .meta-actions {
    display: none !important;
  }
  .site-header {
    box-shadow: none;
  }
  .top-banner {
    background: none !important;
  }
  .top-banner-title {
    color: var(--purple);
  }
  .event__date {
    background: none;
    color: var(--ink);
    border-right: 1px solid var(--line);
  }
}

/* ---------- People ---------- */
.people-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.person-card {
  background: var(--panel);
  border-left: 7px solid var(--purple);
  padding: 20px 22px 22px;
  display: flex;
  flex-direction: column;
}
.person-name {
  font-size: 20px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 4px;
}
.person-name a {
  color: inherit;
}
.person-name a:hover {
  color: var(--purple);
}
.person-title {
  font-weight: 400;
}
.person-dept {
  color: var(--grey-595);
}
.person-fields {
  margin-top: 10px;
  font-size: 15px;
  line-height: 21px;
}
.person-links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin-top: auto;
  padding-top: 14px;
}
.person-links .more-link {
  font-size: 15px;
}
.person-links .is-soon {
  font-weight: 400;
  color: var(--grey-595);
} /* "CUHK profile coming soon": not a link */

/* Surname initials above the list: square buttons in the style of the topic buttons */
.az-filter {
  margin-bottom: 20px;
}
.az-letters {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.az-letters button {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1px solid var(--grey-959);
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1;
  cursor: pointer;
}
.az-letters button:hover {
  border-color: var(--purple);
  color: var(--purple);
}
.az-letters button[aria-pressed="true"] {
  background: var(--purple);
  border-color: var(--purple);
  color: var(--white);
}
.people-count:empty {
  margin: 0;
}

/* ---------- Other activities (home) ---------- */
.activities {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 20px;
}
.activity {
  border: 1px solid var(--line);
  padding: 20px 20px 22px;
  background: var(--white);
}
.activity h3 {
  font-size: 18px;
  line-height: 1.3;
  font-weight: 600;
  color: var(--ink);
  margin: 10px 0 6px;
}
.activity p {
  font-size: 15px;
  line-height: 21px;
}
.series-intro {
  max-width: 60em;
  margin-bottom: 28px;
}
.activity .tbc {
  margin-left: 0;
}

/* Mailing-list box at the end of the Seminar Series section (home), shown once a link is set */
.mailing-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 32px;
  margin-top: 36px;
  padding: 24px 28px;
  background: var(--white);
  border-left: 3px solid var(--purple);
}
.mailing-cta__text {
  flex: 1 1 320px;
  min-width: 0;
}
.mailing-cta__text .subtitle {
  margin-bottom: 4px;
}
@media (max-width: 1023px) {
  .activities {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
@media (max-width: 639px) {
  .activities {
    grid-template-columns: 1fr;
  }
}

/* Footer credit (small, low-key) */
.credit {
  margin-top: 6px;
  font-size: 13px;
  line-height: 18px;
  font-weight: 300;
  color: var(--grey-959);
}

.person-appts {
  margin-top: 6px;
  display: grid;
  gap: 2px;
}
.person-appts li {
  font-size: 15px;
  line-height: 21px;
  color: var(--grey-595);
  padding-left: 12px;
  position: relative;
}
.person-appts li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 4px;
  height: 4px;
  background: var(--purple);
}
.credit a {
  color: inherit;
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-color: rgba(149, 149, 149, 0.5);
}
.credit a:hover {
  color: var(--purple);
  text-decoration-color: currentColor;
}

/* ---------- Home: at a glance + topics (guide: Statistics) ---------- */
.glance {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  margin-top: 44px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
/* While the data loads, its message spans the whole row. */
.glance[aria-busy="true"] > .empty-state {
  grid-column: 1 / -1;
}
.glance-num {
  display: block;
  font-size: 56px;
  line-height: 1;
  font-weight: 300;
  color: var(--purple);
}
.glance-label {
  display: block;
  margin-top: 10px;
  font-size: 16px;
  line-height: 22px;
  font-weight: 400;
  color: var(--ink);
}
.topics-strip {
  margin-top: 36px;
}
.topics-strip .subtitle {
  margin-bottom: 10px;
}
.topics-strip ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}
.person-card.is-target {
  box-shadow: 0 0 0 2px var(--purple);
}
@media (max-width: 639px) {
  .glance {
    gap: 12px;
    margin-top: 32px;
    padding-top: 24px;
  }
  .glance-num {
    font-size: 40px;
  }
  .glance-label {
    font-size: 14px;
    line-height: 19px;
  }
}

/* Glance figures are links */
a.glance-item {
  display: block;
  color: var(--ink);
  text-decoration: none;
}
a.glance-item .glance-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
a.glance-item .glance-label svg {
  width: 14px;
  height: 14px;
  color: var(--purple);
  opacity: 0;
  transform: translateX(-4px);
  transition:
    opacity 0.2s ease,
    transform 0.2s ease;
}
a.glance-item:hover .glance-num {
  color: var(--purple-dark);
}
a.glance-item:hover .glance-label {
  color: var(--purple);
}
a.glance-item:hover .glance-label svg,
a.glance-item:focus-visible .glance-label svg {
  opacity: 1;
  transform: none;
}
@media (hover: none) {
  a.glance-item .glance-label svg {
    opacity: 1;
    transform: none;
  }
}

/* Seminars page: academic-year summary */
.year-summary {
  margin-top: 10px;
  color: var(--grey-595);
  font-weight: 400;
}
.year-summary strong {
  color: var(--ink);
}
.year-summary a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---------- Seminars: Upcoming / Past tabs ---------- */
.sub-tabs {
  display: flex;
  gap: 32px;
  margin: 18px 0 16px;
  border-bottom: 1px solid var(--line);
}
.sub-tabs a {
  display: inline-block;
  padding: 8px 0 10px;
  margin-bottom: -1px;
  font-size: 18px;
  line-height: 24px;
  font-weight: 400;
  color: var(--grey-595);
  border-bottom: 3px solid transparent;
}
.sub-tabs a:hover {
  color: var(--purple);
  text-decoration: none;
}
.sub-tabs a[aria-current="page"] {
  color: var(--purple);
  font-weight: 600;
  border-bottom-color: var(--purple);
}
.sub-tabs .tab-count {
  font-size: 15px;
  font-weight: 400;
  color: var(--grey-959);
}
.sub-tabs a[aria-current="page"] .tab-count {
  color: var(--purple);
}

/* ---------- Topics and search (Seminars pages, home) ---------- */
/* Topic buttons / links: border boxes like the guide's tags, in sentence case, with a count. */
.topics-strip a,
.topic-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border: 1px solid var(--grey-959);
  background: var(--white);
  color: var(--ink);
  font-family: var(--font);
  font-size: 15px;
  line-height: 22px;
  font-weight: 400;
  cursor: pointer;
}
.topics-strip a:hover,
.topic-chip:hover {
  border-color: var(--purple);
  color: var(--purple);
  text-decoration: none;
}
.topics-strip .n,
.topic-chip .n {
  font-size: 13px;
  color: var(--grey-808);
}
.topic-chip[aria-pressed="true"] {
  background: var(--purple);
  border-color: var(--purple);
  color: var(--white);
}
.topic-chip[aria-pressed="true"] .n {
  color: rgba(255, 255, 255, 0.8);
}
.topic-filter {
  flex: 1 1 100%;
  min-width: 0;
} /* min-width: lets the swipeable topic row shrink on phones */
.topic-filter__label,
.az-filter__label {
  font-size: 14px;
  line-height: 20px;
  font-weight: 600;
  color: var(--grey-595);
  margin-bottom: 8px;
}
.topic-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.result-count .sep {
  margin: 0 4px;
}
.result-count a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Link-looking button (e.g. "Clear") */
.text-btn {
  font: inherit;
  color: var(--purple);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.text-btn:hover {
  color: var(--purple-dark);
}

/* Search matches */
mark {
  background: rgba(253, 176, 21, 0.35);
  color: inherit;
  padding: 0 1px;
}
.snippet {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 20px;
  color: var(--grey-595);
}
.event__content .snippet {
  margin: -8px 0 14px;
}

/* Topics on seminar cards, past rows and the seminar page */
.event__subtitle a {
  color: var(--purple);
}
.event__subtitle a:hover {
  text-decoration: underline;
}
.past-row .p-topics {
  display: block;
  margin-top: 2px;
  font-size: 14px;
  line-height: 20px;
  color: var(--grey-808);
}
.meta-panel .topic-list a {
  font-weight: 600;
}
@media (max-width: 639px) {
  /* One swipeable row of topic buttons instead of a tall stack. */
  .topic-chips {
    flex-wrap: nowrap;
    overflow-x: auto;
    margin: 0 calc(-1 * var(--pad-x));
    padding: 0 var(--pad-x) 6px;
    scrollbar-width: none;
  }
  .topic-chips::-webkit-scrollbar {
    display: none;
  }
  .topic-chip {
    flex: none;
  }
}

/* ---------- Shared: long words, high-contrast mode ---------- */
/* Long words and web addresses wrap instead of widening the page. */
.event__content,
.post__text,
.post__meta,
.person-card,
.prose,
.rich,
.meta-panel,
.past-row > a > span {
  min-width: 0;
  overflow-wrap: anywhere;
}
/* Windows high-contrast mode: the menu icon, the current page and pressed buttons stay visible. */
@media (forced-colors: active) {
  .menu-toggle span:not(.visually-hidden) {
    background: ButtonText;
    forced-color-adjust: none;
  }
  [aria-current="page"],
  [aria-pressed="true"] {
    outline: 2px solid Highlight;
    outline-offset: -2px;
  }
  .top-banner-title {
    color: CanvasText;
  }
}