:root {
  --bg: #030f1e;
  --bg-soft: #0a1c33;
  --text: #ffffff;
  --muted: #a2b4c7;
  --accent: #00ffcc;
  --accent-hot: #ff007f;
  --line: rgba(255, 255, 255, 0.16);
  --panel: rgba(255, 255, 255, 0.055);
  --panel-strong: rgba(255, 255, 255, 0.09);
  --shadow: 0 20px 60px rgba(0, 0, 0, 0.36);
  --max: 1180px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, sans-serif;
  line-height: 1.75;
  letter-spacing: 0;
  background:
    radial-gradient(circle at 18% 12%, rgba(0, 255, 204, 0.18), transparent 26rem),
    radial-gradient(circle at 86% 8%, rgba(255, 0, 127, 0.12), transparent 24rem),
    linear-gradient(180deg, #030f1e 0%, #051426 44%, #030f1e 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(circle, rgba(255,255,255,0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 46px 46px, 120px 120px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.75), transparent 80%);
  z-index: -1;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  padding: .7rem 1rem;
  background: var(--accent);
  color: #031018;
}

.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(3, 15, 30, 0.82);
  backdrop-filter: blur(18px);
}

.nav-wrap {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
}

.brand img {
  width: 36px;
  height: 44px;
  object-fit: contain;
  filter: drop-shadow(0 0 14px rgba(0, 255, 204, 0.34));
}

.site-menu {
  display: flex;
  align-items: center;
  gap: 6px;
}

.site-menu a,
.nav-toggle,
.btn {
  min-height: 42px;
  border: 1px solid transparent;
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 18px;
  transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}

.site-menu a:hover,
.site-menu a:focus-visible,
.nav-toggle:hover,
.nav-toggle:focus-visible,
.btn:hover,
.btn:focus-visible {
  background: rgba(0, 255, 204, 0.06);
  color: var(--accent);
  border-color: var(--accent);
  border-radius: 999px;
  transform: translateY(-1px);
  text-shadow: 0 0 12px rgba(0, 255, 204, 0.72);
  box-shadow: 0 0 0 1px rgba(0, 255, 204, 0.72), 0 0 22px rgba(0, 255, 204, 0.28);
  outline: none;
}

.nav-download,
.btn.primary {
  position: relative;
  gap: 12px;
  overflow: hidden;
  min-height: 54px;
  padding: 0 28px 0 22px;
  color: var(--accent);
  font-size: 1.08rem;
  font-weight: 900;
  background: rgba(3, 15, 30, 0.68);
  border: 2px solid var(--accent);
  border-radius: 999px;
  text-shadow: 0 0 10px rgba(0, 255, 204, 0.72);
  box-shadow:
    inset 0 0 0 1px rgba(0, 255, 204, 0.18),
    inset 0 0 20px rgba(0, 255, 204, 0.07),
    0 0 18px rgba(0, 255, 204, 0.28);
}

.nav-download::before,
.btn.primary::before {
  content: "↓";
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  color: var(--accent);
  background: rgba(0, 255, 204, 0.04);
  border: 1px solid var(--accent);
  box-shadow: inset 0 0 10px rgba(0, 255, 204, 0.08), 0 0 10px rgba(0, 255, 204, 0.16);
  font-size: 1rem;
  line-height: 1;
  text-shadow: 0 0 10px rgba(0, 255, 204, 0.72);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}

.nav-download:hover,
.nav-download:focus-visible,
.btn.primary:hover,
.btn.primary:focus-visible {
  background: rgba(3, 15, 30, 0.78);
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-4px);
  text-shadow: 0 0 14px rgba(0, 255, 204, 0.9);
  box-shadow:
    inset 0 0 0 1px rgba(0, 255, 204, 0.26),
    inset 0 0 22px rgba(0, 255, 204, 0.1),
    0 10px 26px rgba(0, 0, 0, 0.3),
    0 0 26px rgba(0, 255, 204, 0.38);
}

.nav-download:hover::before,
.nav-download:focus-visible::before,
.btn.primary:hover::before,
.btn.primary:focus-visible::before {
  background: rgba(0, 255, 204, 0.08);
  box-shadow: inset 0 0 10px rgba(0, 255, 204, 0.12), 0 0 16px rgba(0, 255, 204, 0.28);
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  font: inherit;
}

.hero {
  min-height: 720px;
  position: relative;
  display: grid;
  align-items: center;
  overflow: hidden;
  border-bottom: 1px solid rgba(255,255,255,.1);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .42;
  filter: saturate(1.08) contrast(1.08);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(90deg, rgba(3,15,30,.96) 0%, rgba(3,15,30,.74) 42%, rgba(3,15,30,.2) 100%),
    linear-gradient(0deg, #030f1e 0%, rgba(3,15,30,0) 34%);
}

.hero-inner {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
  padding: 120px 0 100px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 533px);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--accent);
  text-transform: uppercase;
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .12em;
}

h1, h2, h3, p { overflow-wrap: anywhere; }

h1 {
  margin: 0;
  color: var(--accent);
  font-size: clamp(3.2rem, 8vw, 6.8rem);
  line-height: .98;
  letter-spacing: 0;
  text-shadow: 0 0 42px rgba(0, 255, 204, 0.36);
}

h2 {
  margin: 0;
  color: var(--accent);
  font-size: clamp(1.55rem, 2.8vw, 2.55rem);
  line-height: 1.22;
  letter-spacing: 0;
  text-shadow: 0 0 24px rgba(0, 255, 204, 0.16);
}

h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
  line-height: 1.35;
}

p { color: var(--muted); }

.hero-subtitle {
  max-width: 720px;
  margin: 24px 0 0;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  color: rgba(255,255,255,.86);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 34px 0;
}

.hero-cover {
  width: min(533px, 100%);
  margin: 0;
  justify-self: end;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid rgba(0, 255, 204, 0.34);
  background: rgba(255, 255, 255, 0.055);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35), 0 0 32px rgba(0, 255, 204, 0.14);
}

.hero-cover img {
  width: 100%;
  aspect-ratio: 533 / 300;
  object-fit: cover;
}

.hero-cover figcaption {
  color: rgba(255, 255, 255, 0.78);
  background: rgba(3, 15, 30, 0.72);
}

.btn {
  min-width: 132px;
  min-height: 48px;
  font-weight: 800;
}

.hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 150px));
  gap: 12px;
  margin: 40px 0 0;
}

.hero-meta div,
.analysis-panel,
.intro-copy,
.feature-card,
.guide-step,
.faq-item,
.content-card,
.timeline-item,
.cta-section {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.hero-meta div {
  padding: 14px 16px;
  border-radius: 8px;
}

.hero-meta dt {
  color: var(--muted);
  font-size: .78rem;
}

.hero-meta dd {
  margin: 0;
  font-weight: 800;
}

.section,
.media-band,
.cta-section {
  width: min(var(--max), calc(100% - 32px));
  margin: 0 auto;
}

.section {
  padding: 96px 0 0;
}

.section-heading {
  max-width: 850px;
  margin-bottom: 34px;
}

.section-heading {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.section-heading h2 {
  text-align: center;
}
.section-heading p {
  font-size: 1.03rem;
}

.section-heading.compact {
  margin-bottom: 20px;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(320px, 1.1fr);
  gap: 24px;
  align-items: stretch;
}

.intro-copy,
.analysis-panel,
.feature-card {
  border-radius: 8px;
  padding: 24px;
}

.intro-art,
.content-card figure,
.gallery-slide {
  margin: 0;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,.12);
  background: #06182b;
}

.intro-art img {
  width: 100%;
  height: 420px;
  object-fit: cover;
}

figcaption {
  color: var(--muted);
  font-size: .86rem;
  padding: 12px 14px;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.content-card {
  border-radius: 8px;
  overflow: hidden;
}

.content-card figure img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.content-card div {
  padding: 20px;
}

.media-band {
  padding-top: 96px;
  position: relative;
}

.gallery {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(280px, 52%);
  gap: 16px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  padding-bottom: 12px;
}

.gallery-slide {
  scroll-snap-align: start;
}

.gallery-slide img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.gallery-controls {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.gallery-controls button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,.3);
  background: rgba(255,255,255,.06);
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}

.gallery-controls button:hover {
  background: rgba(0, 255, 204, 0.06);
  color: var(--accent);
  border-color: var(--accent);
  text-shadow: 0 0 12px rgba(0, 255, 204, 0.72);
  box-shadow: 0 0 0 1px rgba(0, 255, 204, 0.72), 0 0 22px rgba(0, 255, 204, 0.28);
}

.guide-list,
.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.guide-step {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 18px;
  padding: 18px;
  border-radius: 8px;
}

.step-index {
  color: var(--accent);
  font-weight: 900;
  font-size: 1.35rem;
}

.analysis-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.feature-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-mark {
  display: block;
  width: 32px;
  height: 4px;
  border-radius: 999px;
  margin-bottom: 18px;
  background: linear-gradient(90deg, var(--accent), var(--accent-hot));
  box-shadow: 0 0 24px rgba(0,255,204,.45);
}

.timeline {
  position: relative;
}

.timeline-item {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 18px;
  padding: 18px 20px;
  border-radius: 8px;
}

.timeline-item time {
  color: var(--accent);
  font-weight: 800;
}

.timeline-item p,
.faq-item p,
.guide-step p,
.feature-card p,
.analysis-panel p,
.content-card p {
  margin: 0;
}

.faq-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.faq-item {
  border-radius: 8px;
  padding: 0;
  overflow: hidden;
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 20px;
  font-weight: 800;
  list-style: none;
}

.faq-item summary::-webkit-details-marker { display: none; }

.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--accent);
}

.faq-item[open] summary::after { content: "-"; }

.faq-item p {
  padding: 0 20px 20px;
}

.cta-section {
  margin-top: 96px;
  margin-bottom: 72px;
  padding: 34px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background:
    radial-gradient(circle at 12% 24%, rgba(0,255,204,.16), transparent 18rem),
    var(--panel-strong);
}

.cta-section h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

.site-footer {
  border-top: 1px solid rgba(255,255,255,.12);
  padding: 28px 16px 36px;
  text-align: center;
  background: rgba(0,0,0,.16);
}

.site-footer p {
  margin: 6px auto;
  max-width: 900px;
  font-size: .9rem;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .55s ease, transform .55s ease;
}

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

@media (max-width: 980px) {
  .nav-toggle { display: inline-flex; }

  .site-menu {
    position: absolute;
    left: 16px;
    right: 16px;
    top: 72px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(3,15,30,.96);
    box-shadow: var(--shadow);
  }

  .site-menu.is-open { display: flex; }

  .hero-inner,
  .intro-grid,
  .content-grid,
  .analysis-grid,
  .feature-grid,
  .faq-list {
    grid-template-columns: 1fr;
  }

  .hero-cover {
    justify-self: start;
  }

  .analysis-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero {
    min-height: 650px;
  }

  .gallery {
    grid-auto-columns: minmax(260px, 78%);
  }
}

@media (max-width: 640px) {
  .nav-wrap,
  .section,
  .media-band,
  .cta-section,
  .hero-inner {
    width: min(100% - 24px, var(--max));
  }

  .hero-inner {
    padding: 96px 0 72px;
  }

  .hero-meta {
    grid-template-columns: 1fr;
  }

  .section,
  .media-band {
    padding-top: 72px;
  }

  .intro-art img {
    height: auto;
    aspect-ratio: 16 / 10;
  }

  .guide-step,
  .timeline-item {
    grid-template-columns: 1fr;
  }

  .analysis-grid {
    grid-template-columns: 1fr;
  }

  .cta-section {
    align-items: stretch;
    flex-direction: column;
    padding: 24px;
  }

  .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}









/* Game atmosphere decorations */
main {
  position: relative;
  overflow: hidden;
}

main::before,
main::after {
  content: "";
  position: fixed;
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 255, 204, 0.16), rgba(0, 255, 204, 0.04) 34%, transparent 68%);
  filter: blur(1px);
  opacity: .76;
  animation: float-glow 10s ease-in-out infinite;
}

main::before {
  width: 180px;
  height: 180px;
  left: max(14px, 4vw);
  top: 18vh;
}

main::after {
  width: 240px;
  height: 240px;
  right: max(10px, 5vw);
  bottom: 12vh;
  animation-delay: -4s;
}

.section-heading {
  position: relative;
  padding-left: 0;
  padding-top: 62px;
}

.section-heading::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: rgba(0, 255, 204, 0.06);
  background-image: url("img/ui-sprite.svg");
  background-size: 240px 48px;
  background-position: 0 0;
  border: 1px solid rgba(0, 255, 204, 0.42);
  box-shadow: 0 0 22px rgba(0, 255, 204, 0.18), inset 0 0 16px rgba(0, 255, 204, 0.08);
}

#content .section-heading::before { background-position: -48px 0; }
#guide .section-heading::before { background-position: -96px 0; }
#features .section-heading::before { background-position: 0 0; }
#updates .section-heading::before { background-position: -144px 0; }
#faq .section-heading::before { background-position: -192px 0; }

.content-card,
.feature-card,
.analysis-panel,
.guide-step,
.faq-item,
.timeline-item {
  position: relative;
  overflow: hidden;
}

.content-card::after,
.feature-card::after,
.analysis-panel::after,
.guide-step::after,
.faq-item::after,
.timeline-item::after {
  content: "";
  position: absolute;
  right: 14px;
  top: 14px;
  width: 34px;
  height: 34px;
  opacity: .18;
  background-image: url("img/ui-sprite.svg");
  background-size: 170px 34px;
  background-position: -136px 0;
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease;
}

.content-card:nth-child(2n)::after { background-position: -34px 0; }
.content-card:nth-child(3n)::after { background-position: -68px 0; }
.feature-card:nth-child(2n)::after { background-position: -102px 0; }
.feature-card:nth-child(3n)::after { background-position: 0 0; }
.guide-step::after { background-position: -68px 0; }
.timeline-item::after { background-position: -102px 0; }
.faq-item::after { background-position: -136px 0; }

.content-card:hover::after,
.feature-card:hover::after,
.analysis-panel:hover::after,
.guide-step:hover::after,
.faq-item:hover::after,
.timeline-item:hover::after {
  opacity: .34;
  transform: translateY(-2px) scale(1.04);
}

.hero-cover::before {
  content: "";
  position: absolute;
  right: 18px;
  top: 18px;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background-color: rgba(3, 15, 30, 0.56);
  background-image: url("img/ui-sprite.svg");
  background-size: 290px 58px;
  background-position: 0 0;
  border: 1px solid rgba(0, 255, 204, 0.46);
  box-shadow: 0 0 24px rgba(0, 255, 204, 0.22);
  z-index: 2;
}

.hero-cover {
  position: relative;
}

.step-index {
  position: relative;
  display: inline-flex;
  width: 56px;
  height: 56px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: 1px solid rgba(0, 255, 204, 0.32);
  background: rgba(0, 255, 204, 0.04);
  box-shadow: inset 0 0 18px rgba(0, 255, 204, 0.05);
}

.faq-item summary {
  position: relative;
  padding-left: 54px;
}

.faq-item summary::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  width: 24px;
  height: 24px;
  transform: translateY(-50%);
  border-radius: 50%;
  background-image: url("img/ui-sprite.svg");
  background-size: 120px 24px;
  background-position: -96px 0;
  box-shadow: 0 0 12px rgba(0, 255, 204, 0.14);
}

@keyframes float-glow {
  0%, 100% { transform: translate3d(0, 0, 0) scale(1); opacity: .42; }
  50% { transform: translate3d(0, -18px, 0) scale(1.08); opacity: .76; }
}

@media (max-width: 640px) {
  .section-heading {
    padding-left: 0;
    padding-top: 58px;
  }

  .section-heading::before {
    left: 50%;
    top: 0;
    transform: translateX(-50%);
  }

  main::before,
  main::after {
    opacity: .36;
  }
}


/* Navigation icon sprites */
.site-menu a:not(.nav-download) {
  gap: 8px;
}

.site-menu a:not(.nav-download)::before {
  content: "";
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  border-radius: 50%;
  background-image: url("img/nav-sprite.svg");
  background-size: 108px 18px;
  background-position: 0 0;
  opacity: .88;
  filter: drop-shadow(0 0 6px rgba(0, 255, 204, 0.32));
  transition: opacity .2s ease, filter .2s ease, transform .2s ease;
}

.site-menu a:not(.nav-download):nth-child(1)::before { background-position: 0 0; }
.site-menu a:not(.nav-download):nth-child(2)::before { background-position: -18px 0; }
.site-menu a:not(.nav-download):nth-child(3)::before { background-position: -36px 0; }
.site-menu a:not(.nav-download):nth-child(4)::before { background-position: -54px 0; }
.site-menu a:not(.nav-download):nth-child(5)::before { background-position: -72px 0; }
.site-menu a:not(.nav-download):nth-child(6)::before { background-position: -90px 0; }

.site-menu a:not(.nav-download):hover::before,
.site-menu a:not(.nav-download):focus-visible::before {
  opacity: 1;
  filter: drop-shadow(0 0 10px rgba(0, 255, 204, 0.7));
  transform: translateY(-1px) scale(1.08);
}

@media (max-width: 980px) {
  .site-menu a:not(.nav-download) {
    justify-content: flex-start;
  }
}



/* Modern interaction polish */
.site-header {
  transition: background .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.site-header:hover {
  border-color: rgba(0, 255, 204, 0.22);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.18);
}

.brand,
.hero-cover,
.content-card,
.feature-card,
.analysis-panel,
.guide-step,
.timeline-item,
.faq-item,
.intro-copy,
.intro-art,
.hero-meta div {
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease, background .28s ease, filter .28s ease;
}

.brand:hover {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(0, 255, 204, 0.52);
}

.brand:hover img {
  transform: translateY(-2px) scale(1.04);
  filter: drop-shadow(0 0 18px rgba(0, 255, 204, 0.55));
}

.hero-cover {
  animation: cover-float 7s ease-in-out infinite;
}

.hero-cover:hover,
.intro-art:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 255, 204, 0.58);
  box-shadow: 0 24px 70px rgba(0, 0, 0, 0.42), 0 0 34px rgba(0, 255, 204, 0.22);
}

.content-card:hover,
.feature-card:hover,
.analysis-panel:hover,
.guide-step:hover,
.timeline-item:hover,
.faq-item:hover,
.intro-copy:hover,
.hero-meta div:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 255, 204, 0.44);
  background: rgba(255, 255, 255, 0.075);
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.35), 0 0 26px rgba(0, 255, 204, 0.13);
}

.content-card figure,
.intro-art,
.hero-cover {
  isolation: isolate;
}

.content-card figure img,
.intro-art img,
.hero-cover img {
  transition: transform .55s ease, filter .55s ease, opacity .55s ease;
}

.content-card:hover figure img,
.intro-art:hover img,
.hero-cover:hover img {
  transform: scale(1.045);
  filter: saturate(1.14) contrast(1.08);
}

.content-card h3,
.feature-card h3,
.analysis-panel h3,
.guide-step h3,
.timeline-item time,
.faq-item summary {
  transition: color .22s ease, text-shadow .22s ease;
}

.content-card:hover h3,
.feature-card:hover h3,
.analysis-panel:hover h3,
.guide-step:hover h3,
.timeline-item:hover time,
.faq-item:hover summary {
  color: var(--accent);
  text-shadow: 0 0 12px rgba(0, 255, 204, 0.42);
}

.section-heading h2 {
  position: relative;
  display: inline-block;
}

.section-heading h2::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -14px;
  width: 72px;
  height: 2px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  box-shadow: 0 0 18px rgba(0, 255, 204, 0.42);
}

.faq-item[open] {
  border-color: rgba(0, 255, 204, 0.5);
  background: rgba(0, 255, 204, 0.045);
}

.faq-item[open] p {
  animation: faq-open .24s ease both;
}

.guide-step:hover .step-index {
  color: #031018;
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 255, 204, 0.32);
}

.feature-card:hover .feature-mark {
  width: 54px;
  box-shadow: 0 0 26px rgba(0, 255, 204, 0.58);
}

.cta-section {
  position: relative;
  overflow: hidden;
}

.cta-section::after {
  content: "";
  position: absolute;
  inset: -80% auto auto -20%;
  width: 260px;
  height: 260px;
  pointer-events: none;
  background: radial-gradient(circle, rgba(0, 255, 204, 0.18), transparent 65%);
  transition: transform .5s ease, opacity .5s ease;
  opacity: .55;
}

.cta-section:hover::after {
  transform: translate(70%, 30%) scale(1.18);
  opacity: .9;
}

@keyframes cover-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  .hero-cover {
    animation: none;
  }
}

/* Friend links */
.friend-links {
  margin-top: 72px;
  padding: 70px 16px;
  text-align: center;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 255, 255, 0.22), transparent 34rem),
    linear-gradient(180deg, rgba(0, 255, 204, 0.18), rgba(0, 255, 204, 0.12));
  border-top: 1px solid rgba(0, 255, 204, 0.28);
  border-bottom: 1px solid rgba(0, 255, 204, 0.22);
}

.friend-links h2 {
  margin: 0 0 24px;
  color: #031018;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  line-height: 1.2;
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.22);
}

.friend-link-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.friend-link-list a {
  min-height: 46px;
  padding: 0 28px;
  border: 1px solid transparent;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #031018;
  font-weight: 900;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 14px 28px rgba(3, 15, 30, 0.14), inset 0 0 0 1px rgba(255, 255, 255, 0.45);
  transition: border-color .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease, text-shadow .22s ease;
}

.friend-link-list a:hover,
.friend-link-list a:focus-visible {
  color: var(--accent);
  background: rgba(3, 15, 30, 0.82);
  border-color: var(--accent);
  text-shadow: 0 0 12px rgba(0, 255, 204, 0.72);
  box-shadow: 0 0 0 1px rgba(0, 255, 204, 0.72), 0 0 22px rgba(0, 255, 204, 0.28);
  outline: none;
}

@media (max-width: 640px) {
  .friend-links {
    margin-top: 56px;
    padding: 52px 16px;
  }

  .friend-link-list {
    gap: 10px;
  }

  .friend-link-list a {
    width: min(100%, 280px);
  }
}