/* Shared visual layer for the library directory and course doorway pages. */

.landing-page {
  --landing-page-max: 1240px;
  --landing-radius: 14px;
  --landing-radius-small: 10px;
  --landing-border: rgba(255, 255, 255, 0.14);
  --landing-border-strong: rgba(255, 255, 255, 0.25);
  --landing-shadow: 0 28px 80px rgba(0, 0, 0, 0.3);
}

.landing-page::before {
  background:
    linear-gradient(180deg, rgba(86, 216, 255, 0.05), transparent 30%),
    linear-gradient(135deg, #07111f, #0b1b2a 52%, #07111f);
}

.landing-nav {
  position: relative;
  z-index: 10;
  display: flex;
  min-height: 58px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
  border: 1px solid var(--landing-border);
  border-radius: var(--landing-radius-small);
  background: rgba(7, 17, 31, 0.88);
  padding: 8px 10px 8px 14px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(18px);
}

.landing-brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
  color: #f7fbff;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.1;
  text-decoration: none;
}

.landing-brand-mark {
  display: inline-grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid rgba(86, 216, 255, 0.38);
  border-radius: 8px;
  background: rgba(86, 216, 255, 0.1);
  color: #8be6ff;
  font-size: 12px;
  font-weight: 900;
}

.landing-nav-links {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: flex-end;
  gap: 6px;
}

.landing-nav-link {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 8px;
  color: rgba(235, 244, 255, 0.76);
  padding: 8px 11px;
  font-size: 13px;
  font-weight: 750;
  line-height: 1.1;
  text-decoration: none;
  white-space: nowrap;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease;
}

.landing-nav-link:hover,
.landing-nav-link:focus-visible,
.landing-nav-link.is-current {
  border-color: rgba(86, 216, 255, 0.24);
  background: rgba(86, 216, 255, 0.09);
  color: #f7fbff;
  outline: none;
}

.landing-button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 9px;
  background: rgba(255, 255, 255, 0.07);
  color: #f7fbff;
  padding: 11px 15px;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.1;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.landing-button:hover,
.landing-button:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(86, 216, 255, 0.48);
  background: rgba(86, 216, 255, 0.12);
  outline: none;
}

.landing-button.primary {
  border-color: rgba(126, 240, 181, 0.72);
  background: #7ef0b5;
  color: #06131b;
}

/* Library directory */

.library-home .site,
.economics-home .site {
  width: min(var(--landing-page-max), calc(100% - 44px));
  padding-top: 18px;
}

.library-home .hero {
  min-height: min(610px, calc(100svh - 116px));
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.42fr);
  grid-template-rows: auto auto auto 1fr auto;
  align-items: start;
  gap: 14px 34px;
  border-color: var(--landing-border);
  border-radius: var(--landing-radius);
  background:
    linear-gradient(90deg, rgba(4, 13, 25, 0.97), rgba(4, 13, 25, 0.78) 52%, rgba(4, 13, 25, 0.3)),
    linear-gradient(0deg, rgba(4, 13, 25, 0.94), rgba(4, 13, 25, 0.08) 62%),
    url("../images/investment-analysis/finance-chart-whiteboard-2021.jpg") center 48% / cover;
  padding: clamp(30px, 5vw, 64px);
  box-shadow: var(--landing-shadow);
}

.library-home .hero::before {
  content: "Two courses. One clear starting point.";
  position: relative;
  z-index: 1;
  grid-column: 2;
  grid-row: 2 / 4;
  align-self: end;
  max-width: 12ch;
  border-top: 2px solid var(--cyan);
  color: rgba(245, 248, 255, 0.9);
  padding-top: 16px;
  font-size: clamp(26px, 2.5vw, 38px);
  font-weight: 650;
  line-height: 1.08;
}

.library-home .hero .eyebrow { grid-column: 1; grid-row: 1; }

.library-home .hero h1 {
  grid-column: 1;
  grid-row: 2;
  max-width: 12ch;
  font-size: clamp(56px, 6.4vw, 88px);
  font-weight: 780;
  line-height: 0.98;
}

.library-home .hero h1 span { background: none; color: #f7fbff; }
.library-home .hero h1 span:last-child { color: var(--cyan); }

.library-home .lead {
  grid-column: 1;
  grid-row: 3;
  max-width: 34ch;
  color: rgba(245, 248, 255, 0.88);
  font-size: clamp(21px, 2vw, 28px);
}

.library-home .hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  grid-column: 1;
  grid-row: 4;
  flex-wrap: wrap;
  align-items: start;
  gap: 9px;
  margin-top: 10px;
}

.library-home .hero-metrics { grid-column: 1; grid-row: 5; min-width: 0; }

.library-home .hero-metric {
  min-height: 84px;
  border-radius: 9px;
  background: rgba(5, 16, 29, 0.68);
}

.library-home .author-line {
  grid-column: 2;
  grid-row: 5;
  align-self: center;
  margin: 0;
}

.library-home .section { margin-top: 42px; }

.library-home .section-head {
  margin-bottom: 20px;
  border-bottom: 1px solid var(--landing-border);
  padding-bottom: 18px;
}

.library-home .section h2 {
  font-size: clamp(40px, 4.3vw, 60px);
  font-weight: 720;
}

.library-home .course-entry-grid { gap: 20px; }

.library-home .course-entry-card {
  min-height: 440px;
  gap: 12px;
  border-color: var(--landing-border);
  border-radius: var(--landing-radius);
  background: rgba(9, 24, 39, 0.82);
  padding: 26px;
  box-shadow: 0 20px 54px rgba(0, 0, 0, 0.22);
}

.library-home .course-entry-card::before { height: 4px; background: var(--cyan); }
.library-home .course-entry-card.investment-entry::before { background: var(--green); }

.library-home .course-entry-media {
  height: 178px;
  margin: -26px -26px 8px;
}

.library-home .course-entry-media img { opacity: 0.72; }

.library-home .course-entry-card h3 {
  max-width: 18ch;
  font-size: clamp(28px, 3vw, 40px);
  font-weight: 700;
}

.library-home .course-tags li { border-radius: 6px; font-weight: 750; }
.library-home .course-actions { grid-template-columns: repeat(2, minmax(0, 1fr)); }

.library-home .course-link.primary {
  grid-column: 1 / -1;
  min-height: 48px;
}

/* Economics doorway */

.economics-home .hero {
  border-color: var(--landing-border);
  border-radius: var(--landing-radius);
  background:
    linear-gradient(90deg, rgba(5, 15, 28, 0.97), rgba(5, 15, 28, 0.8) 52%, rgba(5, 15, 28, 0.25)),
    linear-gradient(0deg, rgba(5, 15, 28, 0.9), rgba(5, 15, 28, 0.04) 58%),
    url("../images/macro-aims/china-national-bureau-statistics.jpg") center 42% / cover;
  box-shadow: var(--landing-shadow);
}

.economics-home .hero-inner {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 340px);
  grid-template-rows: auto auto 1fr auto;
  gap: 18px 36px;
  min-height: min(610px, calc(100svh - 116px));
  padding: clamp(32px, 5vw, 64px);
}

.economics-home .hero-copy { grid-column: 1; grid-row: 1; }

.economics-home .hero h1 {
  max-width: 12ch;
  font-size: clamp(58px, 7vw, 96px);
  font-weight: 760;
  line-height: 0.96;
}

.economics-home .hero h1 span { background: none; color: #f7fbff; }
.economics-home .hero h1 span:last-child { color: var(--cyan); }

.economics-home .hero .lead {
  max-width: 30ch;
  font-size: clamp(21px, 2vw, 28px);
  line-height: 1.28;
}

.economics-home .economics-hero-stats {
  display: grid;
  grid-column: 2;
  grid-row: 1 / 4;
  align-self: end;
  border-top: 3px solid var(--cyan);
  background: rgba(5, 16, 29, 0.72);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.22);
  backdrop-filter: blur(14px);
}

.economics-home .economics-hero-stats span {
  display: grid;
  grid-template-columns: 72px 1fr;
  align-items: center;
  gap: 10px;
  min-height: 74px;
  border: 1px solid rgba(86, 216, 255, 0.18);
  border-top: 0;
  color: rgba(219, 231, 246, 0.76);
  padding: 12px 16px;
  font-size: 13px;
  font-weight: 750;
  line-height: 1.2;
  text-transform: uppercase;
}

.economics-home .economics-hero-stats strong {
  color: #f7fbff;
  font-size: 28px;
  font-weight: 760;
  line-height: 1;
}

.economics-home .hero-actions { grid-column: 1; grid-row: 2; }
.economics-home .author-line { grid-column: 1; grid-row: 4; }
.economics-home .section { margin-top: 46px; }
.economics-home .section-head { border-bottom-color: var(--landing-border); }

.economics-home .section h2 {
  max-width: 17ch;
  font-size: clamp(40px, 4.8vw, 66px);
  font-weight: 720;
}

.economics-home .course-roadmap { display: grid; gap: 14px; }

.economics-home .unit-step {
  border-color: var(--landing-border);
  border-radius: var(--landing-radius);
  background: rgba(9, 24, 39, 0.7);
  box-shadow: 0 16px 38px rgba(0, 0, 0, 0.16);
}

.economics-home .lesson-card {
  border-radius: var(--landing-radius-small);
  background: rgba(255, 255, 255, 0.035);
}

/* Investment Analysis doorway */

.investment-home.landing-page {
  --landing-border: rgba(214, 231, 232, 0.17);
  --landing-border-strong: rgba(214, 231, 232, 0.3);
  background: linear-gradient(180deg, #071013, #091418 44%, #060b0e);
}

.investment-home .investment-page {
  width: min(var(--landing-page-max), calc(100% - 44px));
  padding-top: 18px;
}

.investment-home .landing-nav { background: rgba(6, 15, 18, 0.9); }

.investment-home .investment-nav {
  min-height: 58px;
  margin-bottom: 14px;
}

.investment-home .investment-nav > .investment-link {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 10px;
  border: 0;
  background: transparent;
  padding: 0;
  font-size: 14px;
}

.investment-home .investment-nav > .investment-link::before {
  content: "IA";
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid rgba(79, 210, 255, 0.36);
  border-radius: 8px;
  background: rgba(79, 210, 255, 0.09);
  color: var(--inv-cyan);
  font-size: 12px;
  font-weight: 700;
}

.investment-home .investment-nav-links { gap: 6px; }

.investment-home .investment-nav-links .investment-link {
  min-height: 38px;
  border-color: transparent;
  background: transparent;
  color: rgba(247, 251, 248, 0.76);
  padding: 8px 11px;
  font-size: 13px;
}

.investment-home .investment-nav-links .investment-link:hover,
.investment-home .investment-nav-links .investment-link:focus-visible {
  border-color: rgba(79, 210, 255, 0.22);
  background: rgba(79, 210, 255, 0.08);
}

.investment-home .investment-nav-links .investment-link:last-child {
  border-color: rgba(57, 217, 145, 0.55);
  background: rgba(57, 217, 145, 0.12);
  color: var(--inv-ink);
}

.investment-home .investment-hero {
  min-height: min(710px, calc(100svh - 116px));
  grid-template-columns: minmax(0, 1.25fr) minmax(330px, 0.75fr);
  align-content: stretch;
  align-items: end;
  border-color: var(--landing-border);
  border-radius: var(--landing-radius);
  background:
    linear-gradient(90deg, rgba(4, 10, 12, 0.98), rgba(4, 10, 12, 0.75) 55%, rgba(4, 10, 12, 0.25)),
    linear-gradient(0deg, rgba(4, 10, 12, 0.94), rgba(4, 10, 12, 0.04) 62%),
    url("../images/investment-analysis/trading-desk-laptops-2025.jpg") center 55% / cover;
  box-shadow: var(--landing-shadow);
}

.investment-home .investment-hero-copy {
  width: auto;
  padding: clamp(42px, 6vw, 72px);
}

.investment-home .investment-hero h1 {
  max-width: 9ch;
  font-size: clamp(64px, 7vw, 94px);
  line-height: 0.94;
}

.investment-home .investment-hero-copy > p {
  max-width: 39rem;
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.3;
}

.investment-home .investment-action {
  min-height: 46px;
  border-radius: 9px;
  padding: 11px 15px;
}

.investment-home .investment-status-panel {
  width: auto;
  margin: 0 clamp(30px, 4vw, 48px) clamp(38px, 5vw, 56px) 0;
  border: 1px solid rgba(79, 210, 255, 0.25);
  border-top: 3px solid var(--inv-cyan);
  background: rgba(5, 14, 17, 0.78);
  padding: 20px;
  box-shadow: 0 22px 56px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(16px);
}

.investment-home .investment-learning-strip {
  grid-template-columns: 1fr;
  border-top: 0;
  margin-top: 12px;
  box-shadow: none;
}

.investment-home .investment-learning-item {
  min-height: 0;
  border: 0;
  border-top: 1px solid rgba(79, 210, 255, 0.2);
  background: transparent;
  padding: 15px 0;
}

.investment-home .investment-learning-item + .investment-learning-item { border-left: 0; }
.investment-home .investment-section { margin-top: 52px; }

.investment-home .investment-section-head {
  border-bottom-color: var(--landing-border);
  padding-bottom: 22px;
}

.investment-home .investment-section h2 {
  max-width: 18ch;
  font-size: clamp(40px, 4.5vw, 60px);
  font-weight: 600;
}

.investment-home .investment-overview-card,
.investment-home .investment-card {
  border-color: var(--landing-border);
  border-radius: var(--landing-radius);
  background: rgba(14, 29, 34, 0.82);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.2);
}

.investment-home .investment-overview-card {
  gap: 24px;
  padding: clamp(24px, 3.5vw, 36px);
}

.investment-home .investment-overview-main {
  border-left: 3px solid var(--inv-cyan);
  padding-left: 20px;
}

.investment-home .investment-overview-list { gap: 11px; }

.investment-home .investment-overview-list li {
  border-left: 0;
  border-top: 1px solid rgba(214, 231, 232, 0.12);
  padding: 11px 0 0;
}

.investment-home .investment-semester-card,
.investment-home .investment-overview-zh {
  border-radius: 10px;
  background: rgba(3, 12, 15, 0.34);
}

.investment-home .investment-card-grid { gap: 18px; margin-top: 22px; }

.investment-home .investment-card {
  min-height: 244px;
  padding: 26px;
}

.investment-home .investment-card.is-featured {
  background:
    linear-gradient(145deg, rgba(79, 210, 255, 0.09), rgba(14, 29, 34, 0.86) 58%, rgba(57, 217, 145, 0.06)),
    rgba(14, 29, 34, 0.82);
}

.investment-home .investment-card h3 {
  max-width: 19ch;
  font-size: clamp(25px, 2.4vw, 32px);
}

@media (max-width: 900px) {
  .landing-nav { align-items: flex-start; flex-wrap: wrap; }

  .landing-nav-links {
    width: 100%;
    justify-content: flex-start;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .library-home .hero,
  .economics-home .hero-inner,
  .investment-home .investment-hero { grid-template-columns: 1fr; }

  .library-home .hero::before { display: none; }

  .library-home .hero .eyebrow,
  .library-home .hero h1,
  .library-home .lead,
  .library-home .hero-actions,
  .library-home .hero-metrics,
  .library-home .author-line,
  .economics-home .hero-copy,
  .economics-home .economics-hero-stats,
  .economics-home .hero-actions,
  .economics-home .author-line { grid-column: 1; grid-row: auto; }

  .economics-home .economics-hero-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-self: auto;
  }

  .economics-home .economics-hero-stats span { grid-template-columns: 1fr; }

  .investment-home .investment-status-panel { margin: 0 28px 28px; }
}

@media (max-width: 640px) {
  .library-home .site,
  .economics-home .site,
  .investment-home .investment-page {
    width: min(100% - 24px, var(--landing-page-max));
    padding-top: 12px;
  }

  .landing-nav { min-height: 0; margin-bottom: 10px; padding: 8px; }
  .landing-brand { width: 100%; }

  .landing-nav-link {
    min-height: 36px;
    padding-inline: 9px;
    font-size: 12px;
  }

  .landing-nav-links {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .library-home .hero,
  .economics-home .hero-inner { min-height: 0; padding: 26px 22px; }

  .library-home .hero h1,
  .economics-home .hero h1,
  .investment-home .investment-hero h1 { font-size: clamp(48px, 15vw, 62px); }

  .library-home .hero-metrics { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .library-home .hero-metric { min-height: 0; }
  .library-home .author-line { margin-top: 4px; }

  .library-home .section-head,
  .investment-home .investment-section-head {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .library-home .course-entry-grid { grid-template-columns: 1fr; }

  .library-home .course-entry-card { min-height: 0; padding: 21px; }

  .library-home .course-entry-media {
    height: 150px;
    margin: -21px -21px 6px;
  }

  .library-home .course-actions { grid-template-columns: 1fr; }
  .library-home .course-link.primary { grid-column: auto; }

  .economics-home .economics-hero-stats { grid-template-columns: 1fr; }

  .economics-home .economics-hero-stats span {
    grid-template-columns: 58px 1fr;
    min-height: 60px;
  }

  .economics-home .hero-actions .button { width: 100%; }

  .investment-home .investment-hero { min-height: 0; }
  .investment-home .investment-hero-copy { padding: 34px 22px 24px; }
  .investment-home .investment-status-panel { margin: 0 18px 18px; padding: 18px; }

  .investment-home .investment-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
  }

  .investment-home .investment-nav > .investment-link {
    width: auto;
  }

  .investment-home .investment-nav-links {
    display: flex;
    width: 100%;
    flex-wrap: wrap;
    gap: 6px;
  }

  .investment-home .investment-nav-links .investment-link {
    width: auto;
    flex: 1 1 92px;
  }

  .investment-home .investment-nav-links .investment-link:last-child {
    flex-basis: 100%;
  }

  .investment-home .investment-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .investment-home .investment-action.primary { grid-column: 1 / -1; }

  .investment-home .investment-hero-facts {
    display: grid;
    grid-template-columns: 1fr;
  }

  .investment-home .investment-overview-card { grid-template-columns: 1fr; padding: 22px; }
  .investment-home .investment-card-grid { grid-template-columns: 1fr; }

  .investment-home .investment-card.is-featured,
  .investment-home .investment-card.is-data { grid-column: 1; }
}

@media (prefers-reduced-motion: reduce) {
  .landing-page *,
  .landing-page *::before,
  .landing-page *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

/* Simplified public course pages */

.simplified-landing .landing-nav {
  margin-bottom: 16px;
}

.library-home.simplified-landing .hero,
.economics-home.simplified-landing .hero,
.investment-home.simplified-landing .investment-hero {
  min-height: 0;
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(10, 22, 30, 0.82);
  box-shadow: none;
}

.library-home.simplified-landing .hero,
.economics-home.simplified-landing .hero-inner {
  padding: clamp(28px, 5vw, 52px);
}

.library-home.simplified-landing .hero {
  display: block;
}

.library-home.simplified-landing .hero::after,
.economics-home.simplified-landing .hero::after,
.investment-home.simplified-landing .investment-hero::after {
  display: none;
}

.library-home.simplified-landing .hero h1 {
  max-width: none;
  margin-top: 8px;
  font-size: clamp(44px, 7vw, 68px);
  line-height: 1;
}

.library-home.simplified-landing .lead {
  max-width: 760px;
  margin-top: 18px;
  font-size: clamp(18px, 2.1vw, 23px);
  line-height: 1.42;
}

.library-home.simplified-landing .section {
  margin-top: 30px;
}

.library-home.simplified-landing .course-entry-grid {
  gap: 14px;
  margin-top: 16px;
}

.library-home.simplified-landing .course-entry-card {
  min-height: 0;
  padding: clamp(22px, 3vw, 30px);
  background: rgba(12, 26, 36, 0.76);
  box-shadow: none;
}

.library-home.simplified-landing .course-entry-card h3 {
  font-size: clamp(28px, 3.2vw, 38px);
}

.library-home.simplified-landing .course-actions {
  display: flex;
  flex-wrap: wrap;
  grid-template-columns: none;
  margin-top: 6px;
}

.library-home.simplified-landing .course-link.primary {
  grid-column: auto;
}

.economics-home.simplified-landing .hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: end;
  min-height: 0;
}

.economics-home.simplified-landing .hero h1 {
  margin-top: 8px;
  font-size: clamp(46px, 7vw, 72px);
}

.economics-home.simplified-landing .hero .lead {
  max-width: 700px;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.42;
}

.economics-home.simplified-landing .hero-actions {
  align-self: end;
  justify-content: flex-end;
  margin: 0;
}

.investment-home.simplified-landing .investment-hero {
  display: block;
  overflow: visible;
}

.investment-home.simplified-landing .investment-hero-copy {
  width: min(100%, 920px);
  padding: clamp(30px, 5vw, 56px);
}

.investment-home.simplified-landing .investment-hero h1 {
  max-width: 15ch;
  font-size: clamp(46px, 7vw, 72px);
  line-height: 1;
}

.investment-home.simplified-landing .investment-hero-copy > p {
  max-width: 760px;
  margin-top: 18px;
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.48;
}

.investment-home.simplified-landing .investment-hero-copy > .investment-boundary-note {
  max-width: 720px;
  color: var(--inv-muted);
  font-size: 15px;
}

.investment-home.simplified-landing .investment-section {
  margin-top: 38px;
}

.investment-home.simplified-landing .investment-section-head {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 420px);
  align-items: end;
}

.investment-unit-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 18px 0 0;
  border-top: 1px solid var(--inv-line);
  padding: 0;
  list-style: none;
}

.investment-unit-list li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  border-bottom: 1px solid var(--inv-line);
  padding: 20px 18px 20px 0;
}

.investment-unit-list li:nth-child(odd) {
  border-right: 1px solid var(--inv-line);
}

.investment-unit-list li:nth-child(even) {
  padding-left: 18px;
}

.investment-unit-list > li > span {
  color: var(--inv-cyan);
  font-size: 14px;
  font-weight: 700;
}

.investment-unit-list h3 {
  margin: 0;
  font-size: 21px;
  line-height: 1.2;
}

.investment-unit-list p {
  margin: 7px 0 0;
  color: var(--inv-muted);
  font-size: 14px;
  line-height: 1.5;
}

.investment-lesson-list {
  display: grid;
  margin-top: 16px;
  border-top: 1px solid var(--inv-line);
}

.investment-lesson-list article {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  border-bottom: 1px solid var(--inv-line);
  padding: 20px 0;
}

.investment-lesson-list article > div > span {
  color: var(--inv-cyan);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.investment-lesson-list h3 {
  margin: 5px 0 0;
  font-size: clamp(22px, 2.3vw, 29px);
  line-height: 1.2;
}

.investment-lesson-list p {
  max-width: 780px;
  margin: 7px 0 0;
  color: var(--inv-muted);
  font-size: 14px;
  line-height: 1.5;
}

.investment-lesson-list nav {
  display: flex;
  gap: 8px;
}

.investment-lesson-list nav a {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--inv-line);
  border-radius: 8px;
  padding: 9px 13px;
  color: var(--inv-ink);
  font-weight: 700;
  text-decoration: none;
}

.investment-lesson-list nav a:first-child {
  border-color: rgba(57, 217, 145, 0.48);
  background: rgba(57, 217, 145, 0.1);
}

.investment-lesson-list nav a:hover,
.investment-lesson-list nav a:focus-visible {
  border-color: var(--inv-line-strong);
  background: rgba(79, 210, 255, 0.08);
}

.investment-resource-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 16px;
}

.investment-resource-list a {
  display: grid;
  gap: 5px;
  border: 1px solid var(--inv-line);
  border-radius: var(--inv-radius);
  background: rgba(16, 27, 32, 0.62);
  padding: 16px;
  color: var(--inv-ink);
  text-decoration: none;
}

.investment-resource-list a:hover,
.investment-resource-list a:focus-visible {
  border-color: var(--inv-line-strong);
  background: rgba(21, 36, 43, 0.78);
}

.investment-resource-list strong {
  font-size: 17px;
}

.investment-resource-list span,
.investment-archive-note {
  color: var(--inv-muted);
  font-size: 14px;
  line-height: 1.45;
}

.investment-archive-note {
  margin: 14px 0 0;
}

.investment-archive-note a {
  color: var(--inv-cyan);
}

@media (max-width: 760px) {
  .library-home.simplified-landing .hero,
  .economics-home.simplified-landing .hero-inner,
  .investment-home.simplified-landing .investment-hero-copy {
    padding: 24px;
  }

  .library-home.simplified-landing .course-actions,
  .economics-home.simplified-landing .hero-inner,
  .economics-home.simplified-landing .hero-actions,
  .investment-home.simplified-landing .investment-section-head,
  .investment-unit-list,
  .investment-resource-list {
    display: grid;
    grid-template-columns: 1fr;
  }

  .economics-home.simplified-landing .hero-actions {
    width: 100%;
  }

  .investment-unit-list li,
  .investment-unit-list li:nth-child(even) {
    border-right: 0;
    padding: 18px 0;
  }

  .investment-home.simplified-landing .investment-actions {
    grid-template-columns: 1fr;
  }

  .investment-lesson-list article {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .investment-lesson-list nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .investment-home.simplified-landing .investment-action.primary {
    grid-column: auto;
  }
}