:root {
  color-scheme: dark;
  --bg: #0A1C12;
  --bg-deep: #0D0D0D;
  --panel: rgba(18, 18, 18, 0.75);
  --panel-solid: #121212;
  --border: #1B4332;
  --text: #FFFFFF;
  --muted: #A3B899;
  --soft: #d8ead0;
  --pink: #FF007F;
  --purple: #7B2CBF;
  --red-pink: #FF3366;
  --green: #54D17A;
  --shadow: rgba(255, 0, 127, 0.5);
  --glow-soft: rgba(255, 0, 127, .18);
  --glow-strong: rgba(255, 0, 127, .42);
  --max: 1180px;
  --radius: 8px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  background:
    radial-gradient(circle at 20% 0%, rgba(255, 0, 127, 0.12), transparent 26rem),
    linear-gradient(180deg, var(--bg), var(--bg-deep) 48rem, #07100b);
  color: var(--text);
  line-height: 1.75;
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, #000, transparent 75%);
  z-index: -1;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
p { color: var(--muted); margin: 0 0 1rem; }
:focus-visible {
  outline: 2px solid var(--pink);
  outline-offset: 3px;
}
h1, h2, h3 { line-height: 1.18; margin: 0; letter-spacing: 0; }
h1, h2 {
  color: transparent;
  background: linear-gradient(90deg, #FFFFFF 0%, #A3B899 42%, #FF007F 78%, #7B2CBF 100%);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 22px rgba(255, 0, 127, .12);
}
h1 { font-size: clamp(2.15rem, 4.8vw, 4.35rem); }
h2 { font-size: clamp(1.35rem, 2.7vw, 2.35rem); }
h3 { font-size: 1.18rem; }

.skip-link {
  position: fixed;
  top: -5rem;
  left: 1rem;
  background: var(--pink);
  color: white;
  padding: .65rem 1rem;
  z-index: 1000;
  border-radius: var(--radius);
}
.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding-block: .8rem;
  padding-inline: max(1rem, calc((100vw - var(--max)) / 2));
  background: rgba(10, 28, 18, .78);
  border-bottom: 1px solid rgba(27, 67, 50, .72);
  backdrop-filter: blur(14px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  font-weight: 800;
  white-space: nowrap;
}
.brand-logo {
  width: 3.2rem;
  height: 3.2rem;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #07100b;
  box-shadow: 0 0 18px rgba(255, 0, 127, .22);
  transition: transform .22s ease, box-shadow .22s ease, border-color .22s ease;
}
.brand:hover .brand-logo {
  transform: rotate(-3deg) scale(1.06);
  border-color: rgba(255, 0, 127, .55);
  box-shadow: 0 0 28px rgba(255, 0, 127, .36);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: .35rem;
  font-size: .94rem;
}
.site-nav a {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .38rem;
  color: var(--soft);
  min-height: 2.35rem;
  padding: .52rem .82rem;
  border-radius: 999px;
  overflow: hidden;
  transition: color .18s ease, transform .18s ease, box-shadow .18s ease;
}
.site-nav a img {
  width: 1.05rem;
  height: 1.05rem;
  object-fit: contain;
  filter: drop-shadow(0 0 6px rgba(255, 0, 127, .25));
}
.site-nav a::before {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  z-index: -1;
  width: .65rem;
  height: .65rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 0, 127, .42), rgba(123, 44, 191, .2) 58%, transparent 70%);
  transform: translate(-50%, -50%) scale(0);
  transition: transform .22s ease;
}
.site-nav a:hover, .site-nav a:focus-visible {
  color: white;
  transform: translateY(-1px);
  box-shadow: inset 0 0 0 1px rgba(255, 0, 127, .22), 0 0 20px rgba(255, 0, 127, .18);
}
.site-nav a:hover::before, .site-nav a:focus-visible::before {
  transform: translate(-50%, -50%) scale(9);
}
.nav-download {
  margin-left: .25rem;
  background: linear-gradient(45deg, var(--pink), var(--purple));
  color: white !important;
  border-radius: 999px;
  box-shadow: 0 0 18px rgba(255, 0, 127, .26);
}
.nav-download::before {
  background: radial-gradient(circle, rgba(255, 255, 255, .34), rgba(255, 0, 127, .26) 48%, transparent 72%);
}
.nav-toggle {
  display: none;
  width: 2.6rem;
  height: 2.6rem;
  padding: .55rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: rgba(18,18,18,.72);
  cursor: pointer;
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}
.nav-toggle span {
  display: block;
  height: 2px;
  margin: 5px 0;
  background: white;
  transform-origin: center;
  transition: transform .2s ease, opacity .2s ease, margin .2s ease;
}
.nav-toggle.is-open {
  border-color: rgba(255, 0, 127, .7);
  background: linear-gradient(45deg, rgba(255, 0, 127, .72), rgba(123, 44, 191, .72));
  box-shadow: 0 0 22px rgba(255, 0, 127, .35);
}
.nav-toggle.is-open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-toggle.is-open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.section, .section-grid, .download-band, .friend-links {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}
.hero {
  min-height: calc(100vh - 72px);
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
  padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(2rem, 5vw, 4rem);
}
.hero-copy { max-width: 680px; }
.eyebrow {
  color: var(--green);
  text-transform: uppercase;
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .08em;
  margin-bottom: .8rem;
}
.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  max-width: 62ch;
  margin-top: 1.1rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin: 1.8rem 0;
}
.btn {
  position: relative;
  isolation: isolate;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 2.8rem;
  padding: .75rem 1.15rem;
  border-radius: 999px;
  font-weight: 800;
  border: 1px solid transparent;
  overflow: hidden;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease, color .18s ease;
}
.btn::before {
  content: "";
  position: absolute;
  z-index: -1;
  left: 50%;
  top: 50%;
  width: .9rem;
  height: .9rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, .28), rgba(255, 0, 127, .2) 55%, transparent 72%);
  transform: translate(-50%, -50%) scale(0);
  transition: transform .24s ease;
}
.btn:hover, .btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 0 34px rgba(255, 0, 127, .42);
}
.btn:hover::before, .btn:focus-visible::before {
  transform: translate(-50%, -50%) scale(18);
}
.button-icon {
  flex: 0 0 auto;
  width: 1.15rem;
  height: 1.15rem;
  object-fit: contain;
  filter: drop-shadow(0 0 8px rgba(255, 255, 255, .18));
}
.btn-primary {
  background: linear-gradient(45deg, var(--pink), var(--purple));
  box-shadow: 0 0 26px var(--shadow);
  background-size: 140% 140%;
}
.btn-ghost {
  color: var(--soft);
  border-color: var(--border);
  background: rgba(18, 18, 18, .58);
}
.btn-primary:hover, .btn-primary:focus-visible {
  background-position: 100% 50%;
}
.hero-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .7rem;
  margin: 0;
}
.hero-facts div, .feature-card, .guide-card, .text-panel, .faq-item, .timeline li, .media-frame, .download-band {
  border: 1px solid var(--border);
  background: var(--panel);
  border-radius: var(--radius);
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease, background-color .22s ease;
}
.hero-facts div:hover,
.text-panel:hover,
.media-frame:hover,
.timeline li:hover,
.faq-item:hover,
.download-band:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 0, 127, .42);
  box-shadow: 0 18px 46px rgba(0, 0, 0, .28), 0 0 24px var(--glow-soft);
}
.hero-facts div { padding: .8rem; }
.hero-facts dt { color: var(--muted); font-size: .78rem; }
.hero-facts dd { margin: .12rem 0 0; font-weight: 800; font-size: .9rem; }
.hero-art {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #07100b;
  box-shadow: 0 22px 80px rgba(0,0,0,.35), 0 0 38px rgba(255, 0, 127, .14);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}
.hero-art::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 35%;
  background: linear-gradient(to top, rgba(10, 28, 18, .8), transparent);
}
.hero-art img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform .45s ease, filter .28s ease;
}
.hero-art:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 0, 127, .48);
  box-shadow: 0 26px 90px rgba(0,0,0,.42), 0 0 42px rgba(255, 0, 127, .24);
}
.hero-art:hover img {
  transform: scale(1.035);
  filter: saturate(1.08) contrast(1.04);
}

.section {
  padding: clamp(3rem, 7vw, 5rem) 0;
  border-top: 1px solid rgba(27, 67, 50, .36);
}
.section-heading {
  max-width: 840px;
  margin-bottom: 1.8rem;
  margin-inline: auto;
  text-align: center;
}
.section-heading h2 {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .75rem;
}
.heading-icon {
  flex: 0 0 auto;
  width: 2.5rem;
  height: 2.5rem;
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(255, 0, 127, .35));
  transition: transform .24s ease, filter .24s ease;
}
.section-heading:hover .heading-icon {
  transform: rotate(-6deg) scale(1.08);
  filter: drop-shadow(0 0 18px rgba(255, 0, 127, .55));
}
.section-heading p:last-child {
  margin-top: .9rem;
  font-size: 1.02rem;
}
.split-layout, .flow-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  align-items: stretch;
}
.text-panel, .feature-card, .guide-card { padding: clamp(1rem, 2vw, 1.35rem); }
.text-panel h3, .feature-card h3, .guide-card h3 { margin-bottom: .65rem; }
.feature-card, .guide-card {
  position: relative;
  overflow: hidden;
  transform: translateZ(0);
}
.feature-card::before, .guide-card::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(120deg, transparent 0%, rgba(255, 255, 255, .08) 45%, transparent 62%);
  transform: translateX(-120%);
  transition: transform .45s ease;
  pointer-events: none;
}
.feature-card > *, .guide-card > * {
  position: relative;
  z-index: 1;
}
.feature-card:hover, .guide-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 0, 127, .5);
  box-shadow: 0 18px 48px rgba(0,0,0,.32), 0 0 26px var(--glow-soft);
}
.feature-card:hover::before, .guide-card:hover::before {
  transform: translateX(120%);
}
.feature-card:hover .card-icon, .guide-card:hover .card-icon {
  transform: translateY(-2px) scale(1.08);
  filter: drop-shadow(0 0 16px rgba(255, 0, 127, .5));
}
.card-icon {
  width: 2.15rem;
  height: 2.15rem;
  object-fit: contain;
  margin-bottom: .85rem;
  filter: drop-shadow(0 0 10px rgba(255, 0, 127, .28));
  transition: transform .22s ease, filter .22s ease;
}
.feature-card::after, .guide-card::after {
  content: "";
  position: absolute;
  right: -1.3rem;
  top: -1.3rem;
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 0, 127, .16), transparent 68%);
  pointer-events: none;
}
.media-frame {
  margin: 0;
  overflow: hidden;
}
.media-frame img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  transition: transform .35s ease, filter .25s ease;
}
.media-frame:hover img {
  transform: scale(1.035);
  filter: saturate(1.12) contrast(1.05);
}
.media-frame figcaption {
  color: var(--muted);
  font-size: .9rem;
  padding: .75rem .9rem;
  border-top: 1px solid var(--border);
}
.feature-grid, .guide-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}
.guide-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.source-grid {
  align-items: stretch;
}
.source-grid .feature-card,
.source-grid .guide-card {
  display: flex;
  flex-direction: column;
}
.source-grid p:last-child {
  margin-bottom: 0;
}
.compact-source-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.feature-source-layout {
  align-items: start;
}
.source-text p:last-child {
  margin-bottom: 0;
}
.card-index {
  color: var(--pink);
  font-weight: 900;
  font-size: .82rem;
}
.content-flow {
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}
.flow-row > div:not(.media-frame) {
  padding: clamp(1rem, 2vw, 1.5rem);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(18,18,18,.78), rgba(10,28,18,.55));
}
.check-list {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
}
.check-list li {
  position: relative;
  padding-left: 1.35rem;
  margin: .55rem 0;
}
.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: .5rem;
  height: .5rem;
  border-radius: 50%;
  background: var(--pink);
  box-shadow: 0 0 12px var(--shadow);
}

.gallery {
  position: relative;
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(18,18,18,.58);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.02);
}
.gallery-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: min(34%, 360px);
  gap: 1rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding: 1rem;
  scrollbar-width: none;
}
.gallery-track::-webkit-scrollbar { display: none; }
.gallery-slide {
  margin: 0;
  scroll-snap-align: center;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  background: #07100b;
  transition: transform .22s ease, border-color .22s ease, box-shadow .22s ease;
}
.gallery-slide:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 0, 127, .48);
  box-shadow: 0 18px 38px rgba(0,0,0,.28), 0 0 20px var(--glow-soft);
}
.gallery-slide img {
  width: 100%;
  height: 180px;
  object-fit: contain;
  background:
    linear-gradient(135deg, rgba(27,67,50,.24), rgba(18,18,18,.72)),
    #07100b;
  cursor: zoom-in;
  transition: transform .18s ease, opacity .18s ease;
}
.gallery-slide img:hover {
  transform: scale(1.02);
  opacity: .92;
}
.gallery-control {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 2;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: rgba(18,18,18,.86);
  color: white;
  font-size: 1.8rem;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease, border-color .18s ease;
}
.gallery-control:hover, .gallery-control:focus-visible {
  transform: translateY(-50%) scale(1.08);
  border-color: rgba(255, 0, 127, .62);
  background: linear-gradient(45deg, rgba(255,0,127,.92), rgba(123,44,191,.9));
  box-shadow: 0 0 22px rgba(255, 0, 127, .38);
}
.gallery-control.prev { left: .75rem; }
.gallery-control.next { right: .75rem; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.25rem;
  background: rgba(0, 0, 0, .86);
  backdrop-filter: blur(10px);
}
.lightbox.is-open {
  display: flex;
}
.lightbox-panel {
  position: relative;
  display: grid;
  gap: .75rem;
  max-width: min(96vw, 1180px);
  max-height: 94vh;
}
.lightbox-image {
  max-width: 100%;
  max-height: min(82vh, 860px);
  object-fit: contain;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: #07100b;
  box-shadow: 0 20px 80px rgba(0,0,0,.45);
}
.lightbox-caption {
  color: var(--soft);
  font-size: .95rem;
  text-align: center;
}
.lightbox-close {
  position: absolute;
  top: -1rem;
  right: -1rem;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: linear-gradient(45deg, var(--pink), var(--purple));
  color: white;
  font-size: 1.45rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: 0 0 22px rgba(255, 0, 127, .35);
  transition: transform .18s ease, box-shadow .18s ease;
}
.lightbox-close:hover, .lightbox-close:focus-visible {
  transform: rotate(90deg) scale(1.05);
  box-shadow: 0 0 30px rgba(255, 0, 127, .52);
}

.timeline {
  display: grid;
  gap: .9rem;
  margin: 0;
  padding: 0;
  list-style: none;
}
.timeline li {
  padding: 1rem 1rem 1rem 1.25rem;
  border-left: 4px solid var(--pink);
  position: relative;
  overflow: hidden;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 1.15rem;
  width: .6rem;
  height: .6rem;
  border-radius: 50%;
  background: var(--pink);
  box-shadow: 0 0 16px rgba(255, 0, 127, .55);
  transition: transform .2s ease, box-shadow .2s ease;
}
.timeline li:hover::before {
  transform: scale(1.35);
  box-shadow: 0 0 24px rgba(255, 0, 127, .75);
}
.timeline time {
  color: var(--green);
  font-weight: 800;
  font-size: .9rem;
}
.timeline h3 { margin: .35rem 0; }

.faq-list {
  display: grid;
  gap: .8rem;
}
.faq-item {
  padding: 0;
  overflow: hidden;
}
.faq-item summary {
  position: relative;
  cursor: pointer;
  padding: 1rem 1.15rem;
  font-weight: 800;
  list-style: none;
  transition: color .18s ease, background-color .18s ease;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary::after {
  content: "+";
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--pink);
  font-size: 1.25rem;
  transition: transform .18s ease;
}
.faq-item[open] summary {
  color: white;
  background: rgba(255, 0, 127, .07);
}
.faq-item[open] summary::after {
  transform: translateY(-50%) rotate(45deg);
}
.faq-item p {
  padding: 0 1.15rem 1rem;
}

.download-band {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  padding: clamp(1.25rem, 3vw, 2rem);
  margin-block: 3rem;
  background:
    linear-gradient(135deg, rgba(255,0,127,.16), rgba(123,44,191,.14)),
    var(--panel);
  position: relative;
  overflow: hidden;
}
.download-band::before {
  content: "";
  position: absolute;
  inset: -40% auto auto -10%;
  width: 16rem;
  height: 16rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 0, 127, .18), transparent 68%);
  transform: scale(.9);
  transition: transform .35s ease, opacity .35s ease;
  opacity: .7;
  pointer-events: none;
}
.download-band:hover::before {
  transform: scale(1.15);
  opacity: 1;
}
.download-band > * {
  position: relative;
  z-index: 1;
}
.download-icon {
  flex: 0 0 auto;
  width: 3.8rem;
  height: 3.8rem;
  object-fit: contain;
  filter: drop-shadow(0 0 18px rgba(255, 0, 127, .38));
}
.download-band h2 { margin-bottom: .5rem; }
.download-band p { margin-bottom: 0; }
.friend-links {
  position: relative;
  overflow: hidden;
  margin-block: 0 2.5rem;
  padding: clamp(2.4rem, 5vw, 4rem) 1rem;
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: var(--radius);
  text-align: center;
  background:
    radial-gradient(circle at 18% 35%, rgba(255, 0, 127, .22), transparent 24rem),
    linear-gradient(105deg, #8B1234 0%, #7B1E5C 42%, #7B2CBF 100%);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .32), 0 0 30px rgba(255, 0, 127, .16);
}
.friend-links::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, rgba(255,255,255,.08), transparent 32%, rgba(255,255,255,.06)),
    radial-gradient(circle at 50% 100%, rgba(10,28,18,.38), transparent 36rem);
}
.friend-links h2 {
  position: relative;
  z-index: 1;
  color: #fff;
  background: none;
  -webkit-background-clip: initial;
  background-clip: initial;
  text-shadow: 0 8px 26px rgba(0,0,0,.35);
  margin-bottom: 1.2rem;
}
.friend-link-list {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .8rem;
}
.friend-link-list a {
  position: relative;
  isolation: isolate;
  min-height: 2.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .65rem 1.15rem;
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 999px;
  color: rgba(255, 255, 255, .88);
  background: rgba(255, 255, 255, .12);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 12px 30px rgba(0,0,0,.16);
  overflow: hidden;
  transition: transform .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease;
}
.friend-link-list a::before {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  z-index: -1;
  width: .8rem;
  height: .8rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,255,255,.32), rgba(255,0,127,.22), transparent 72%);
  transform: translate(-50%, -50%) scale(0);
  transition: transform .24s ease;
}
.friend-link-list a:hover,
.friend-link-list a:focus-visible {
  transform: translateY(-3px);
  color: #fff;
  border-color: rgba(255,255,255,.34);
  box-shadow: 0 16px 34px rgba(0,0,0,.22), 0 0 24px rgba(255, 0, 127, .22);
}
.friend-link-list a:hover::before,
.friend-link-list a:focus-visible::before {
  transform: translate(-50%, -50%) scale(16);
}
.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
  padding: 1.5rem 0 2rem;
  border-top: 1px solid rgba(27, 67, 50, .45);
  color: var(--muted);
  font-size: .92rem;
}
.site-footer p { margin: 0; }
.site-footer a { color: white; }

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}

@media (max-width: 980px) {
  .nav-toggle { display: block; }
  .site-nav {
    position: fixed;
    inset: 4.2rem 1rem auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: .75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: rgba(10, 28, 18, .96);
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: .8rem; }
  .nav-download { margin-left: 0; text-align: center; }
  .hero, .split-layout, .flow-row {
    grid-template-columns: 1fr;
  }
  .flow-row-alt .media-frame { order: -1; }
  .feature-grid, .guide-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .gallery-track { grid-auto-columns: min(46%, 320px); }
}

@media (max-width: 620px) {
  .section, .section-grid, .download-band, .friend-links, .site-footer { width: min(100% - 1rem, var(--max)); }
  .site-header { padding-inline: .75rem; }
  .hero { padding-top: 2.6rem; }
  .feature-grid, .guide-grid { grid-template-columns: 1fr; }
  .hero-facts { grid-template-columns: 1fr; }
  .gallery-track { grid-auto-columns: 70%; }
  .gallery-slide img { height: 150px; }
  .lightbox { padding: .75rem; }
  .lightbox-close {
    top: .5rem;
    right: .5rem;
  }
  .download-band, .site-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .friend-links {
    padding-block: 2.2rem;
  }
  .friend-link-list {
    gap: .6rem;
  }
  .friend-link-list a {
    width: 100%;
  }
  .btn { width: 100%; }
  .hero-actions .btn { width: auto; flex: 1 1 10rem; }
}