/* Visual direction: Steam store — deep space blue-gray #1B2838, cold link blue #66C0F4, saturated green CTA #5BA32B */
:root {
  --bg: #1b2838;
  --bg-elevated: #16202d;
  --bg-panel: #2a475e;
  --bg-card: #1e2a38;
  --text: #c7d5e0;
  --text-strong: #ffffff;
  --muted: #8f98a0;
  --accent: #66c0f4;
  --accent-soft: rgba(102, 192, 244, 0.15);
  --cta: #5ba32b;
  --cta-hover: #6eb835;
  --cta-deep: #4c8a24;
  --border: rgba(102, 192, 244, 0.18);
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --nav-h: 64px;
  --font: "Noto Sans SC", system-ui, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: #a4d7f5;
}

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  height: var(--nav-h);
  background: rgba(27, 40, 56, 0.92);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}

.site-nav__inner {
  max-width: 1120px;
  margin: 0 auto;
  height: 100%;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-strong);
  font-weight: 700;
}

.brand img {
  width: 36px;
  height: 36px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1.25rem;
}

.nav-links a {
  color: var(--text);
  font-size: 0.925rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--accent);
}

.menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  min-width: 44px;
  padding: 0 0.9rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 4px;
  cursor: pointer;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border);
}

.mobile-nav.is-open {
  display: flex;
}

.mobile-nav a {
  color: var(--text);
  padding: 0.5rem 0;
}

@media (min-width: 768px) {
  .menu-btn {
    display: none;
  }

  .nav-links {
    display: flex;
  }

  .mobile-nav {
    display: none !important;
  }
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.75rem 1.4rem;
  border-radius: 3px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-cta {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--cta-hover), var(--cta));
  color: #fff !important;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08), 0 8px 24px rgba(91, 163, 43, 0.35);
}

.btn-cta::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    110deg,
    transparent 20%,
    rgba(255, 255, 255, 0.35) 45%,
    transparent 70%
  );
  transform: translateX(-120%);
  animation: shine 2.8s ease-in-out infinite;
}

.btn-cta:hover {
  background: linear-gradient(180deg, #7ec53d, var(--cta-hover));
  color: #fff !important;
}

.btn-ghost {
  background: transparent;
  color: var(--text-strong) !important;
  border: 1px solid rgba(255, 255, 255, 0.35);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
}

.btn-lg {
  min-height: 52px;
  padding: 0.95rem 1.8rem;
  font-size: 1.05rem;
}

@keyframes shine {
  0%,
  55% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(120%);
  }
}

.hero {
  position: relative;
  min-height: 100vh;
  padding: calc(var(--nav-h) + 2rem) 1rem 4rem;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: #0f1720;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center top;
  transform: scale(1.02);
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero__mask {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(15, 23, 32, 0.92) 0%, rgba(15, 23, 32, 0.78) 42%, rgba(15, 23, 32, 0.45) 100%),
    linear-gradient(180deg, rgba(27, 40, 56, 0.2) 0%, rgba(27, 40, 56, 0.85) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 1120px;
  margin: 0 auto;
  width: 100%;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  border: 1px solid rgba(102, 192, 244, 0.45);
  background: rgba(102, 192, 244, 0.12);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.hero h1 {
  margin: 1rem 0 0;
  color: var(--text-strong);
  font-size: clamp(2.2rem, 5vw, 3.6rem);
  line-height: 1.15;
  font-weight: 900;
}

.hero h1 span {
  display: block;
  margin-top: 0.35rem;
  color: var(--accent);
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.hero__lead {
  margin-top: 1.1rem;
  max-width: 36rem;
  color: #d8e2ec;
  font-size: 1.05rem;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.75rem;
  margin-top: 1.75rem;
  max-width: 40rem;
}

@media (min-width: 640px) {
  .metrics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.metric {
  background: rgba(22, 32, 45, 0.82);
  border: 1px solid var(--border);
  padding: 0.9rem 0.85rem;
}

.metric b {
  display: block;
  color: var(--accent);
  font-size: 1.35rem;
  line-height: 1.2;
}

.metric span {
  color: var(--muted);
  font-size: 0.82rem;
}

.cta-row {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-top: 1.75rem;
  max-width: 34rem;
}

@media (min-width: 640px) {
  .cta-row {
    flex-direction: row;
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1.02) translateY(0);
  }
  to {
    transform: scale(1.06) translateY(-1.5%);
  }
}

.section {
  padding: 4.5rem 1rem;
}

.section--alt {
  background: linear-gradient(180deg, #16202d 0%, #1b2838 100%);
}

.container {
  max-width: 1120px;
  margin: 0 auto;
}

.section-head {
  margin-bottom: 2rem;
}

.section-head h2 {
  margin: 0;
  color: var(--text-strong);
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  font-weight: 800;
}

.section-head p {
  margin: 0.6rem 0 0;
  color: var(--muted);
  max-width: 40rem;
}

.info-grid {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: -2.5rem;
  position: relative;
  z-index: 2;
  box-shadow: var(--shadow);
}

@media (min-width: 768px) {
  .info-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.info-grid article {
  background: var(--bg-panel);
  padding: 1.1rem 1rem;
}

.info-grid span {
  display: block;
  color: var(--muted);
  font-size: 0.8rem;
  margin-bottom: 0.35rem;
}

.info-grid b {
  color: var(--text-strong);
  font-size: 1rem;
}

.story {
  text-align: center;
  max-width: 46rem;
  margin: 0 auto;
}

.story p {
  font-size: 1.05rem;
  line-height: 1.95;
  color: #d2dde8;
}

.feature-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.35rem 1.2rem;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(102, 192, 244, 0.45);
}

.feature-card .icon {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  margin-bottom: 0.9rem;
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 800;
  border: 1px solid rgba(102, 192, 244, 0.25);
}

.feature-card h3 {
  margin: 0 0 0.55rem;
  color: var(--text-strong);
  font-size: 1.1rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.gallery-grid {
  display: grid;
  gap: 0.85rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

@media (min-width: 768px) {
  .gallery-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .gallery-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  background: #0f1720;
  cursor: pointer;
  padding: 0;
  aspect-ratio: 16 / 10;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease, filter 0.35s ease;
}

.gallery-item:hover img {
  transform: scale(1.06);
  filter: brightness(1.12);
}

.download-band {
  background:
    radial-gradient(ellipse at center, rgba(102, 192, 244, 0.12), transparent 60%),
    linear-gradient(180deg, #243447, #1b2838);
  border-block: 1px solid var(--border);
  text-align: center;
  padding: 3.5rem 1rem;
}

.download-band h2 {
  margin: 0 0 0.75rem;
  color: var(--text-strong);
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.download-band p {
  margin: 0 auto 1.5rem;
  max-width: 34rem;
  color: var(--muted);
}

.timeline {
  display: grid;
  gap: 1rem;
}

.timeline-item {
  display: grid;
  gap: 0.35rem;
  padding: 1.1rem 1.2rem;
  background: var(--bg-card);
  border-left: 3px solid var(--accent);
  border: 1px solid var(--border);
  border-left-width: 3px;
  border-left-color: var(--accent);
}

.timeline-item time {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
}

.timeline-item h3 {
  margin: 0;
  color: var(--text-strong);
  font-size: 1.05rem;
}

.timeline-item p {
  margin: 0;
  color: var(--muted);
}

.reviews-top {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.25rem;
  margin-bottom: 1.5rem;
}

.reviews-top strong {
  color: #66c0f4;
  font-size: 1.35rem;
}

.review-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .review-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.review-card {
  background: #1a2735;
  border: 1px solid var(--border);
  padding: 1.25rem;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.review-card.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.stars {
  color: #66c0f4;
  letter-spacing: 0.08em;
  margin-bottom: 0.7rem;
  font-size: 0.9rem;
}

.review-card p {
  margin: 0;
  color: #d2dde8;
}

.review-card footer {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.accordion {
  display: grid;
  gap: 0.65rem;
}

.accordion-item {
  border: 1px solid var(--border);
  background: var(--bg-card);
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 52px;
  padding: 0.95rem 1.1rem;
  background: transparent;
  border: none;
  color: var(--text-strong);
  font: inherit;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
}

.accordion-trigger span {
  color: var(--accent);
  font-size: 1.25rem;
  line-height: 1;
}

.accordion-panel {
  display: none;
  padding: 0 1.1rem 1.1rem;
  color: var(--muted);
}

.accordion-item.is-open .accordion-panel {
  display: block;
}

.final-cta {
  text-align: center;
  padding: 4.5rem 1rem;
  background:
    linear-gradient(180deg, rgba(27, 40, 56, 0.2), rgba(15, 23, 32, 0.85)),
    radial-gradient(circle at top, rgba(91, 163, 43, 0.18), transparent 55%);
}

.final-cta h2 {
  margin: 0;
  color: var(--text-strong);
  font-size: clamp(1.7rem, 3.5vw, 2.4rem);
}

.final-cta p {
  margin: 0.85rem auto 1.6rem;
  max-width: 34rem;
  color: var(--muted);
}

.final-cta .hint {
  margin-top: 1.1rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.site-footer {
  background: #121a24;
  border-top: 1px solid var(--border);
  padding: 3rem 1rem 2rem;
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1fr 1.2fr;
  }
}

.site-footer h3 {
  margin: 0 0 0.85rem;
  color: var(--text-strong);
  font-size: 1rem;
}

.site-footer p,
.site-footer li {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  color: var(--muted);
  font-size: 0.82rem;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tab-btn {
  min-height: 40px;
  padding: 0.45rem 0.95rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  border-radius: 3px;
  cursor: pointer;
  font: inherit;
}

.tab-btn.is-active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.platform-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .platform-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.platform-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.5rem;
}

.platform-card .tag {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--cta);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
}

.platform-card h3 {
  margin: 0 0 0.5rem;
  color: var(--text-strong);
}

.steps {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.25rem;
}

.step b {
  display: inline-flex;
  width: 28px;
  height: 28px;
  align-items: center;
  justify-content: center;
  margin-bottom: 0.75rem;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.85rem;
}

.req-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .req-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.req-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.25rem;
}

.req-card h3 {
  margin: 0 0 0.85rem;
  color: var(--text-strong);
}

.req-card table {
  width: 100%;
  border-collapse: collapse;
}

.req-card th,
.req-card td {
  text-align: left;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  vertical-align: top;
  font-size: 0.92rem;
}

.req-card th {
  width: 5rem;
  color: var(--muted);
  font-weight: 500;
}

.req-card td {
  color: #d2dde8;
}

.guide-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.35rem;
  text-align: left;
  color: inherit;
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
  width: 100%;
  font: inherit;
}

.guide-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent);
}

.guide-card h3 {
  margin: 0.5rem 0;
  color: var(--text-strong);
}

.guide-card p {
  margin: 0 0 0.85rem;
  color: var(--muted);
}

.guide-card .more {
  color: var(--accent);
  font-weight: 700;
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 1.5rem;
}

.toc a {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 0.9rem;
}

.guide-chapter {
  margin-bottom: 2rem;
  padding: 1.35rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.guide-chapter h2 {
  margin: 0 0 0.75rem;
  color: var(--text-strong);
  font-size: 1.25rem;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.72);
}

.modal.is-open {
  display: flex;
}

.modal__panel {
  width: min(720px, 100%);
  max-height: min(85vh, 820px);
  overflow: auto;
  background: #16202d;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 1.25rem;
}

.modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}

.modal__head h3 {
  margin: 0;
  color: var(--text-strong);
}

.modal__close {
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-size: 1.25rem;
}

.modal table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.75rem 0;
}

.modal th,
.modal td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.65rem;
  text-align: left;
  font-size: 0.9rem;
}

.modal th {
  background: rgba(102, 192, 244, 0.08);
  color: var(--accent);
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.88);
  padding: 1rem;
}

.lightbox.is-open {
  display: flex;
}

.lightbox img {
  max-width: min(1100px, 94vw);
  max-height: 84vh;
  object-fit: contain;
  border: 1px solid var(--border);
}

.lightbox__nav,
.lightbox__close {
  position: absolute;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--border);
  background: rgba(27, 40, 56, 0.9);
  color: #fff;
  cursor: pointer;
  font-size: 1.25rem;
}

.lightbox__close {
  top: 1rem;
  right: 1rem;
}

.lightbox__prev {
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
}

.lightbox__next {
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
}

.page-hero {
  padding: calc(var(--nav-h) + 2.5rem) 1rem 2.5rem;
  background:
    linear-gradient(180deg, rgba(22, 32, 45, 0.95), rgba(27, 40, 56, 1)),
    radial-gradient(circle at top right, rgba(102, 192, 244, 0.12), transparent 45%);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  margin: 0.75rem 0 0;
  color: var(--text-strong);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
}

.page-hero p {
  margin: 0.75rem 0 0;
  max-width: 40rem;
  color: var(--muted);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.article-crumb {
  margin-top: 0.75rem !important;
  font-size: 0.9rem;
}

.article-body {
  max-width: 760px;
}

.article-body h2 {
  margin: 2rem 0 0.85rem;
  color: var(--text-strong);
  font-size: 1.35rem;
}

.article-body p,
.article-body li {
  color: #d2dde8;
  line-height: 1.9;
}

.article-body ol,
.article-body ul {
  padding-left: 1.2rem;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.92rem;
}

.article-body th,
.article-body td {
  border: 1px solid var(--border);
  padding: 0.55rem 0.65rem;
  text-align: left;
  vertical-align: top;
}

.article-body th {
  background: rgba(102, 192, 244, 0.08);
  color: var(--accent);
}

.check-list {
  list-style: none;
  padding-left: 0 !important;
  display: grid;
  gap: 0.55rem;
}

.check-list li {
  padding: 0.7rem 0.85rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.article-figure {
  margin: 1.5rem 0;
}

.article-figure img {
  width: 100%;
  border: 1px solid var(--border);
}

.article-figure figcaption {
  margin-top: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
}

.article-faq,
.article-related {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.article-related ul {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 0.45rem;
}

.article-cta-line {
  margin-top: 2rem;
}

.topic-grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 768px) {
  .topic-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .topic-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.topic-card {
  display: block;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 1.2rem;
  color: inherit;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.topic-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  color: inherit;
}

.topic-card h3 {
  margin: 0 0 0.45rem;
  color: var(--accent);
  font-size: 1.05rem;
}

.topic-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.entity-box {
  margin-top: 2.5rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
}

.entity-box h2 {
  margin: 0 0 0.75rem;
  color: var(--text-strong);
  font-size: 1.35rem;
}

.entity-box p {
  margin: 0 0 0.85rem;
  color: #d2dde8;
  line-height: 1.9;
}

.entity-box p:last-child {
  margin-bottom: 0;
}