:root {
  color-scheme: dark;
  --bg: #111827;
  --bg-soft: #162033;
  --bg-warm: #231b24;
  --panel: rgba(255, 255, 255, 0.08);
  --panel-strong: rgba(255, 255, 255, 0.13);
  --text: #f7f2ea;
  --muted: #c8c5bd;
  --subtle: #969999;
  --line: rgba(255, 255, 255, 0.16);
  --gold: #d6ad62;
  --rose: #c96573;
  --teal: #72c6bd;
  --ink: #0b1019;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.38);
  --glow: 0 0 0 1px rgba(214, 173, 98, 0.28), 0 18px 52px rgba(214, 173, 98, 0.12);
  --max: 1180px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 18% 16%, rgba(201, 101, 115, 0.13), transparent 24rem),
    radial-gradient(circle at 80% 8%, rgba(114, 198, 189, 0.1), transparent 25rem),
    linear-gradient(180deg, var(--bg), #0b1019 58%, #141016);
  color: var(--text);
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

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

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

:focus-visible {
  outline: 2px solid rgba(214, 173, 98, 0.82);
  outline-offset: 4px;
}

p,
h1,
h2,
h3 {
  margin-top: 0;
}

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

p strong,
li strong {
  color: #f0d38f;
  font-weight: 900;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 12px;
  z-index: 200;
  transform: translateY(-150%);
  padding: 10px 14px;
  border-radius: 6px;
  background: var(--gold);
  color: var(--ink);
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

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

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 100;
  background: rgba(11, 16, 25, 0.42);
  border-bottom: 1px solid transparent;
  backdrop-filter: blur(16px);
  transition: background 180ms ease, border-color 180ms ease;
}

.site-header.is-scrolled {
  background: rgba(11, 16, 25, 0.86);
  border-color: var(--line);
}

.nav-shell {
  width: min(100% - 32px, var(--max));
  height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  color: var(--text);
  white-space: nowrap;
  transition: color 180ms ease, transform 180ms ease;
}

.brand:hover,
.brand:focus-visible {
  color: #f0d38f;
  transform: translateY(-1px);
}

.brand img {
  width: 44px;
  height: 44px;
  border-radius: 6px;
  object-fit: contain;
  background: rgba(11, 16, 25, 0.72);
  border: 1px solid rgba(255, 255, 255, 0.22);
  transition: border-color 180ms ease, box-shadow 180ms ease;
}

.brand:hover img,
.brand:focus-visible img {
  border-color: rgba(214, 173, 98, 0.72);
  box-shadow: 0 0 22px rgba(214, 173, 98, 0.22);
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 22px;
  color: rgba(247, 242, 234, 0.82);
  font-size: 15px;
}

.nav-links a {
  position: relative;
  padding: 8px 0;
  transition: color 180ms ease, background 180ms ease, transform 180ms ease;
}

.nav-links a:not(.nav-download)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  transform: scaleX(1);
}

.nav-download {
  min-height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 16px;
  border-radius: 6px;
  background: var(--gold);
  color: var(--ink);
  font-weight: 800;
  box-shadow: 0 10px 24px rgba(214, 173, 98, 0.16);
}

.nav-download:hover,
.nav-download:focus-visible {
  background: #f0d38f;
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(214, 173, 98, 0.24);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.nav-toggle-line,
.nav-toggle-line::before,
.nav-toggle-line::after {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: currentColor;
  transition: transform 180ms ease, opacity 180ms ease;
}

.nav-toggle-line::before,
.nav-toggle-line::after {
  content: "";
}

.nav-toggle-line::before {
  transform: translateY(-7px);
}

.nav-toggle-line::after {
  transform: translateY(5px);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line {
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line::before {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-line::after {
  transform: translateY(-2px) rotate(-90deg);
}

.hero {
  position: relative;
  min-height: 88svh;
  padding: 108px max(24px, calc((100vw - var(--max)) / 2)) 46px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 430px);
  align-items: center;
  gap: 42px;
  overflow: hidden;
}

.hero-bg,
.hero-shade {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero > picture {
  position: absolute;
  inset: 0;
}

.hero-bg {
  object-fit: contain;
  object-position: center;
  background: rgba(11, 16, 25, 0.9);
  opacity: 0.42;
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(11, 16, 25, 0.95) 0%, rgba(11, 16, 25, 0.62) 48%, rgba(11, 16, 25, 0.72) 100%),
    linear-gradient(180deg, rgba(11, 16, 25, 0.22) 0%, rgba(11, 16, 25, 0.96) 100%);
}

.hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(214, 173, 98, 0.7), transparent);
}

.hero-content,
.hero-panel {
  position: relative;
  z-index: 1;
}

.eyebrow {
  margin-bottom: 12px;
  color: var(--gold);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
}

h1 {
  margin-bottom: 14px;
  font-size: clamp(44px, 5.4vw, 74px);
  line-height: 0.96;
  letter-spacing: 0;
  color: var(--gold);
  background: linear-gradient(135deg, #f4df9b 0%, var(--gold) 42%, var(--rose) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 34px rgba(214, 173, 98, 0.22);
}

.hero-subtitle {
  max-width: 720px;
  margin-bottom: 22px;
  color: rgba(247, 242, 234, 0.92);
  font-size: clamp(19px, 2.2vw, 26px);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 24px;
}

.btn {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-weight: 800;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(110deg, transparent 0%, rgba(255, 255, 255, 0.36) 46%, transparent 68%);
  transform: translateX(-120%);
  transition: transform 420ms ease;
}

.btn:hover::before,
.btn:focus-visible::before {
  transform: translateX(120%);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 18px 46px rgba(214, 173, 98, 0.22);
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), #f0d38f);
  color: var(--ink);
}

.btn-secondary {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: rgba(214, 173, 98, 0.52);
  background: rgba(214, 173, 98, 0.12);
}

.btn-large {
  min-width: 168px;
}

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

.hero-facts div {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.hero-facts div:hover {
  transform: translateY(-3px);
  border-color: rgba(214, 173, 98, 0.42);
  background: rgba(214, 173, 98, 0.1);
  box-shadow: var(--glow);
}

.hero-facts dt {
  color: var(--subtle);
  font-size: 13px;
}

.hero-facts dd {
  margin: 2px 0 0;
  color: var(--text);
  font-weight: 800;
}

.hero-panel {
  align-self: center;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.hero-panel:hover {
  transform: translateY(-6px);
  border-color: rgba(214, 173, 98, 0.42);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: var(--shadow), var(--glow);
}

.hero-panel img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: rgba(11, 16, 25, 0.88);
  border-radius: 6px;
}

.hero-panel p {
  margin: 14px 4px 2px;
  font-size: 15px;
}

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

.band {
  padding: 86px 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.035), rgba(255, 255, 255, 0.015)),
    rgba(255, 255, 255, 0.02);
  border-block: 1px solid rgba(255, 255, 255, 0.08);
}

.overview-grid,
.split-layout,
.intro-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 470px);
  gap: 44px;
  align-items: center;
}

.section-heading {
  max-width: 780px;
  margin-bottom: 34px;
}

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

h2 {
  margin-bottom: 16px;
  color: var(--gold);
  font-size: clamp(28px, 3.2vw, 42px);
  line-height: 1.15;
  letter-spacing: 0;
  background: linear-gradient(135deg, #f4df9b 0%, var(--gold) 54%, #e08a92 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h3 {
  margin-bottom: 10px;
  color: var(--text);
  font-size: 22px;
  line-height: 1.35;
  letter-spacing: 0;
}

.overview {
  margin-top: 0;
}

.stat-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.stat-strip div {
  min-height: 112px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.stat-strip div:hover {
  transform: translateY(-4px);
  border-color: rgba(114, 198, 189, 0.42);
  background: rgba(114, 198, 189, 0.08);
}

.stat-strip strong {
  color: var(--gold);
  font-size: 32px;
  line-height: 1;
}

.stat-strip span {
  margin-top: 8px;
  color: var(--muted);
}

.intro,
.story,
.gallery,
.updates {
  padding: 96px 0;
}

.media-frame {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.media-frame:hover {
  transform: translateY(-5px);
  border-color: rgba(214, 173, 98, 0.38);
  box-shadow: var(--shadow), var(--glow);
}

.media-frame img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: contain;
  background: rgba(11, 16, 25, 0.88);
}

.media-frame.vertical img {
  aspect-ratio: 4 / 3;
}

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

.check-list {
  display: grid;
  gap: 10px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--muted);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 38%, #fff, var(--teal) 42%, rgba(114, 198, 189, 0.28) 70%);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.feature-card {
  min-height: 290px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.09), rgba(255, 255, 255, 0.04)),
    var(--panel);
  transition: transform 200ms ease, border-color 200ms ease, background 200ms ease, box-shadow 200ms ease;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(214, 173, 98, 0.46);
  background:
    linear-gradient(180deg, rgba(214, 173, 98, 0.13), rgba(255, 255, 255, 0.05)),
    var(--panel);
  box-shadow: var(--glow);
}

.feature-card p {
  margin-bottom: 0;
  font-size: 15px;
}

.sprite {
  width: 42px;
  height: 42px;
  display: inline-block;
  margin-bottom: 20px;
  border-radius: 6px;
  background-color: rgba(214, 173, 98, 0.16);
  background-image:
    linear-gradient(90deg, transparent 0 12px, rgba(214, 173, 98, 0.78) 12px 15px, transparent 15px 100%),
    linear-gradient(0deg, transparent 0 12px, rgba(214, 173, 98, 0.78) 12px 15px, transparent 15px 100%);
  box-shadow: inset 0 0 0 1px rgba(214, 173, 98, 0.36);
  transition: transform 220ms ease, box-shadow 220ms ease;
}

.feature-card:hover .sprite {
  transform: rotate(-6deg) scale(1.08);
  box-shadow: inset 0 0 0 1px rgba(214, 173, 98, 0.46), 0 0 28px rgba(214, 173, 98, 0.18);
}

.sprite-story {
  background-color: rgba(201, 101, 115, 0.18);
  background-image:
    linear-gradient(135deg, transparent 0 42%, rgba(201, 101, 115, 0.88) 42% 50%, transparent 50%),
    radial-gradient(circle at 70% 30%, rgba(247, 242, 234, 0.88) 0 4px, transparent 5px);
  box-shadow: inset 0 0 0 1px rgba(201, 101, 115, 0.38);
}

.sprite-role {
  background-color: rgba(114, 198, 189, 0.16);
  background-image:
    radial-gradient(circle at 50% 34%, rgba(114, 198, 189, 0.9) 0 7px, transparent 8px),
    radial-gradient(circle at 50% 78%, rgba(114, 198, 189, 0.75) 0 13px, transparent 14px);
  box-shadow: inset 0 0 0 1px rgba(114, 198, 189, 0.38);
}

.sprite-clue {
  background-color: rgba(214, 173, 98, 0.16);
  background-image:
    radial-gradient(circle at 42% 42%, transparent 0 9px, rgba(214, 173, 98, 0.86) 10px 13px, transparent 14px),
    linear-gradient(45deg, transparent 52%, rgba(214, 173, 98, 0.86) 53% 62%, transparent 63%);
}

.route-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.route-list span {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.07);
  color: var(--text);
  font-weight: 700;
  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease, color 160ms ease;
}

.route-list span:hover {
  transform: translateY(-2px);
  border-color: rgba(214, 173, 98, 0.46);
  background: rgba(214, 173, 98, 0.14);
  color: #f0d38f;
}

.guide-layout {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.guide-index {
  position: sticky;
  top: 94px;
  display: grid;
  gap: 10px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
}

.guide-index a {
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--muted);
  transition: color 160ms ease, background 160ms ease, transform 160ms ease;
}

.guide-index a:hover,
.guide-index a:focus-visible,
.guide-index a.is-active {
  background: rgba(214, 173, 98, 0.16);
  color: var(--text);
  transform: translateX(2px);
}

.guide-content {
  display: grid;
  gap: 14px;
}

.guide-block {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.guide-block:hover {
  transform: translateY(-4px);
  border-color: rgba(214, 173, 98, 0.38);
  background: rgba(255, 255, 255, 0.09);
  box-shadow: 0 16px 46px rgba(0, 0, 0, 0.2);
}

.guide-block p:last-child {
  margin-bottom: 0;
}

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

.gallery-item {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--panel);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease, background 220ms ease;
}

.gallery-item:hover {
  transform: translateY(-6px);
  border-color: rgba(214, 173, 98, 0.44);
  background: rgba(255, 255, 255, 0.09);
  box-shadow: var(--glow);
}

.gallery-item.wide {
  grid-column: 1 / -1;
}

.gallery-item img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  background: rgba(11, 16, 25, 0.88);
}

.gallery-item figcaption {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 8px 12px;
  border-radius: 6px;
  background: rgba(11, 16, 25, 0.72);
  color: var(--text);
  backdrop-filter: blur(8px);
  transition: background 180ms ease, color 180ms ease;
}

.gallery-item:hover figcaption {
  background: rgba(214, 173, 98, 0.88);
  color: var(--ink);
}

.download-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 30px;
  border: 1px solid rgba(214, 173, 98, 0.36);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(214, 173, 98, 0.16), rgba(201, 101, 115, 0.1)),
    rgba(255, 255, 255, 0.06);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.download-panel:hover {
  transform: translateY(-4px);
  border-color: rgba(214, 173, 98, 0.58);
  box-shadow: var(--glow);
}

.download-panel h2 {
  font-size: clamp(28px, 3vw, 40px);
}

.download-panel p {
  margin-bottom: 0;
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  position: relative;
  padding: 24px 24px 24px 32px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  transition: transform 180ms ease, border-color 180ms ease, background 180ms ease;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 30px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 18px rgba(214, 173, 98, 0.36);
}

.timeline-item:hover {
  transform: translateX(4px);
  border-color: rgba(214, 173, 98, 0.38);
  background: rgba(255, 255, 255, 0.09);
}

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

.timeline-item p {
  margin-bottom: 0;
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.07);
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.faq-item:hover,
.faq-item[open] {
  border-color: rgba(214, 173, 98, 0.34);
  background: rgba(255, 255, 255, 0.09);
}

.faq-item summary {
  cursor: pointer;
  padding: 18px 20px;
  color: var(--text);
  font-weight: 800;
  transition: color 160ms ease;
}

.faq-item summary:hover {
  color: #f0d38f;
}

.faq-item p {
  margin: 0;
  padding: 0 20px 18px;
}

.site-footer {
  padding: 36px 0;
  background: #080d15;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-inner p {
  max-width: 720px;
  margin: 8px 0 0;
  font-size: 14px;
}

.footer-download {
  color: var(--gold);
  font-weight: 800;
  white-space: nowrap;
  transition: color 160ms ease, transform 160ms ease;
}

.footer-download:hover,
.footer-download:focus-visible {
  color: #f0d38f;
  transform: translateY(-2px);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 520ms ease, transform 520ms ease;
}

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .nav-links {
    position: fixed;
    left: 16px;
    right: 16px;
    top: 78px;
    display: grid;
    gap: 4px;
    justify-content: center;
    justify-items: center;
    text-align: center;
    padding: 16px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(11, 16, 25, 0.96);
    box-shadow: var(--shadow);
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: transform 180ms ease, opacity 180ms ease;
  }

  .nav-links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    width: min(100%, 240px);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    border-radius: 6px;
  }

  .nav-download {
    margin-top: 6px;
  }

  .hero {
    min-height: 88svh;
    grid-template-columns: 1fr;
    padding-top: 100px;
    gap: 24px;
  }

  .hero-panel {
    max-width: 560px;
  }

  .overview-grid,
  .split-layout,
  .intro-layout,
  .guide-layout {
    grid-template-columns: 1fr;
  }

  .guide-index {
    position: static;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (max-width: 720px) {
  .nav-shell {
    width: min(100% - 24px, var(--max));
    height: 66px;
  }

  .brand img {
    width: 40px;
    height: 40px;
  }

  .hero {
    min-height: 84svh;
    padding: 92px 16px 36px;
  }

  h1 {
    font-size: 40px;
  }

  .hero-subtitle {
    font-size: 18px;
  }

  .hero-panel {
    display: none;
  }

  .hero-facts div {
    padding: 10px 12px;
  }

  .hero-facts,
  .stat-strip,
  .feature-grid,
  .gallery-grid,
  .guide-index {
    grid-template-columns: 1fr;
  }

  .section-inner {
    width: min(100% - 24px, var(--max));
  }

  .band,
  .intro,
  .story,
  .gallery,
  .updates {
    padding: 62px 0;
  }

  .feature-card {
    min-height: auto;
  }

  .download-panel,
  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .btn,
  .btn-large {
    width: 100%;
  }
}

@media (max-width: 420px) {
  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 26px;
  }

  h3 {
    font-size: 20px;
  }

  .hero-actions {
    gap: 10px;
  }

  .download-panel,
  .guide-block,
  .feature-card {
    padding: 20px;
  }
}