:root {
  --bg: #08111d;
  --bg-deep: #040914;
  --panel: rgba(11, 20, 36, 0.82);
  --panel-strong: rgba(12, 22, 40, 0.95);
  --line: rgba(255, 194, 229, 0.2);
  --line-soft: rgba(130, 246, 255, 0.14);
  --text: #f5f7ff;
  --muted: #b8c3d7;
  --primary: #8af3ff;
  --secondary: #ffb9dc;
  --tertiary: #ffe7f4;
  --accent: #ffd98e;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.42);
  --glow-pink: 0 0 26px rgba(255, 185, 220, 0.18);
  --glow-cyan: 0 0 26px rgba(138, 243, 255, 0.14);
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: "Bahnschrift", "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  background:
    radial-gradient(circle at 14% 14%, rgba(255, 185, 220, 0.11), transparent 24%),
    radial-gradient(circle at 84% 10%, rgba(138, 243, 255, 0.12), transparent 22%),
    radial-gradient(circle at 50% 80%, rgba(255, 231, 244, 0.05), transparent 26%),
    linear-gradient(180deg, #040c16 0%, #091423 42%, #03070e 100%);
  position: relative;
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

body::before {
  background:
    radial-gradient(circle at 18% 28%, rgba(255, 185, 220, 0.08), transparent 12%),
    radial-gradient(circle at 78% 32%, rgba(255, 217, 142, 0.06), transparent 10%),
    radial-gradient(circle at 64% 72%, rgba(138, 243, 255, 0.05), transparent 12%);
}

body::after {
  background:
    radial-gradient(circle at 12% 18%, rgba(255, 255, 255, 0.18) 0 1px, transparent 1.5px),
    radial-gradient(circle at 74% 22%, rgba(255, 255, 255, 0.14) 0 1px, transparent 1.5px),
    radial-gradient(circle at 36% 78%, rgba(255, 255, 255, 0.1) 0 1px, transparent 1.5px);
  background-size: 280px 280px, 340px 340px, 320px 320px;
  opacity: 0.65;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 0;
}

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

button {
  font: inherit;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.page-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(138, 243, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 185, 220, 0.018) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent 96%);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: rgba(8, 14, 26, 0.76);
  border-bottom: 1px solid rgba(255, 194, 229, 0.1);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.16);
}

.header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  text-align: left;
}

.brand-logo {
  width: 42px;
  height: 42px;
  flex: 0 0 auto;
  filter: drop-shadow(0 0 12px rgba(255, 185, 220, 0.22)) drop-shadow(0 0 18px rgba(138, 243, 255, 0.16));
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand-text strong {
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  opacity: 0.92;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 14px;
}

.site-nav a,
.site-nav button {
  font-size: 0.95rem;
  color: var(--muted);
  transition: color 0.2s ease, text-shadow 0.2s ease, background 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
}

.site-nav a:hover,
.site-nav a.is-active,
.site-nav button:hover,
.site-nav button.is-active {
  color: #fff6fb;
  text-shadow: 0 0 14px rgba(255, 185, 220, 0.18);
  background: linear-gradient(180deg, rgba(15, 24, 40, 0.96), rgba(9, 16, 28, 0.96));
  border-color: rgba(255, 194, 229, 0.14);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.04),
    0 10px 22px rgba(0, 0, 0, 0.22);
}

.menu-toggle {
  display: none;
  min-width: 64px;
  height: 42px;
  padding: 0 14px;
  border-radius: 14px;
  border: 1px solid rgba(255, 194, 229, 0.18);
  background: rgba(12, 22, 38, 0.92);
  box-shadow: var(--glow-pink);
  color: var(--text);
  cursor: pointer;
}

.menu-toggle-text {
  display: inline-block;
  font-size: 0.92rem;
  font-weight: 700;
}

.hero,
.section {
  padding: 28px 0;
}

.hero {
  padding-top: 56px;
  position: relative;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 20px 0 auto;
  height: 420px;
  pointer-events: none;
  background:
    radial-gradient(circle at 22% 20%, rgba(255, 185, 220, 0.14), transparent 24%),
    radial-gradient(circle at 78% 18%, rgba(138, 243, 255, 0.14), transparent 26%);
  filter: blur(18px);
  opacity: 0.95;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 0.95fr);
  gap: 30px;
  align-items: center;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 0.75rem;
  text-shadow: 0 0 16px rgba(138, 243, 255, 0.18);
}

h1,
h2,
h3,
h4 {
  margin: 0;
  line-height: 1.16;
}

strong {
  color: #ffe6f2;
  font-weight: 700;
  text-shadow:
    0 0 10px rgba(255, 185, 220, 0.16),
    0 0 16px rgba(138, 243, 255, 0.08);
}

h1 {
  font-size: 2.25rem;
  line-height: 1.12;
  letter-spacing: 0;
  max-width: 9.5em;
  text-wrap: balance;
  text-shadow:
    0 0 22px rgba(255, 255, 255, 0.05),
    0 0 32px rgba(255, 185, 220, 0.06);
}

h2 {
  font-size: 1.6rem;
  line-height: 1.24;
}

h3 {
  font-size: 1.08rem;
}

h4 {
  font-size: 1rem;
}

.hero-text,
.section-head p,
.info-panel p,
.content-card p,
.guide-card p,
.update-card p,
.showcase-copy p,
.download-copy p,
.faq-card p,
.site-footer p {
  color: var(--muted);
}

.hero-text {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 1rem;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  font-size: 0.95rem;
  border-radius: 999px;
  border: 1px solid transparent;
  color: var(--text);
  transition:
    transform 0.28s ease,
    box-shadow 0.28s ease,
    border-color 0.28s ease,
    background 0.28s ease,
    filter 0.28s ease;
  position: relative;
  overflow: hidden;
}

.btn:hover,
.floating-download:hover,
.footer-nav a:hover,
.footer-nav button:hover,
.copy-link:hover {
  transform: translateY(-3px);
}

.btn::before,
.floating-download::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 20%, rgba(255, 255, 255, 0.34) 50%, transparent 80%);
  transform: translateX(-140%);
  transition: transform 0.55s ease;
  pointer-events: none;
}

.btn:hover::before,
.btn:focus-visible::before,
.floating-download:hover::before,
.floating-download:focus-visible::before {
  transform: translateX(140%);
}

.btn-primary {
  color: #031219;
  font-weight: 700;
  background:
    linear-gradient(135deg, #fff4fb 0%, #ffd0e8 32%, #a5f8ff 100%);
  box-shadow:
    0 14px 34px rgba(255, 185, 220, 0.24),
    0 10px 24px rgba(138, 243, 255, 0.18);
}

.btn-secondary {
  border-color: rgba(255, 194, 229, 0.2);
  background: linear-gradient(180deg, rgba(15, 28, 46, 0.72), rgba(9, 18, 31, 0.72));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  box-shadow:
    0 18px 40px rgba(255, 185, 220, 0.3),
    0 14px 30px rgba(138, 243, 255, 0.22);
  filter: saturate(1.04) brightness(1.02);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  border-color: rgba(255, 214, 235, 0.34);
  box-shadow:
    0 14px 28px rgba(255, 185, 220, 0.12),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, rgba(18, 33, 54, 0.8), rgba(10, 19, 34, 0.8));
}

.hero-points {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 760px;
}

.hero-points li,
.info-panel,
.content-card,
.guide-nav,
.guide-card,
.update-card,
.faq-card,
.download-panel,
.media-card,
.gallery-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(180deg, rgba(16, 26, 44, 0.88), rgba(8, 18, 31, 0.84));
  box-shadow: var(--shadow);
  position: relative;
  transition:
    transform 0.32s ease,
    box-shadow 0.32s ease,
    border-color 0.32s ease,
    background 0.32s ease;
}

.hero-points li::before,
.info-panel::before,
.content-card::before,
.guide-nav::before,
.guide-card::before,
.update-card::before,
.faq-card::before,
.download-panel::before,
.media-card::before,
.gallery-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, rgba(255, 191, 224, 0.16), rgba(138, 243, 255, 0.1), rgba(255, 236, 246, 0.06));
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.media-card::after,
.gallery-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(125deg, transparent 18%, rgba(255, 255, 255, 0.12) 46%, transparent 72%);
  transform: translateX(-130%);
  transition: transform 0.7s ease, opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
}

.media-card:hover,
.media-card:focus-within,
.gallery-card:hover,
.gallery-card:focus-within {
  transform: translateY(-6px);
  border-color: rgba(255, 214, 235, 0.28);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.42),
    0 0 0 1px rgba(255, 218, 238, 0.06),
    var(--glow-pink),
    var(--glow-cyan);
}

.media-card:hover::after,
.media-card:focus-within::after,
.gallery-card:hover::after,
.gallery-card:focus-within::after {
  transform: translateX(135%);
  opacity: 1;
}

.hero-points li {
  padding: 18px;
}

.hero-points strong {
  display: block;
  margin-bottom: 8px;
}

.hero-visual {
  display: block;
  width: 100%;
  min-width: 0;
  max-width: none;
  margin-left: auto;
}

.feature-shot {
  overflow: hidden;
  align-self: start;
  width: 100%;
  max-width: 540px;
  margin-left: auto;
  box-shadow:
    var(--shadow),
    var(--glow-pink),
    var(--glow-cyan);
  transform-style: preserve-3d;
  will-change: transform;
  transition:
    transform 0.28s ease,
    box-shadow 0.32s ease,
    border-color 0.32s ease;
}

.feature-shot figcaption {
  padding: 12px 14px 14px;
  background: linear-gradient(180deg, rgba(8, 18, 31, 0.94), rgba(11, 20, 36, 0.96));
  color: #d9effa;
  font-size: 0.9rem;
}

.feature-shot img {
  width: 100%;
  height: auto;
  aspect-ratio: 700 / 408;
  transform: translate3d(0, 0, 0) scale(1);
  transition: transform 0.5s ease, filter 0.5s ease;
}

.media-card,
.gallery-card {
  overflow: hidden;
}

.media-card img,
.gallery-card img,
.download-media img {
  width: 100%;
  height: auto;
  object-fit: contain;
  background:
    radial-gradient(circle at 20% 18%, rgba(255, 185, 220, 0.08), transparent 18%),
    rgba(4, 11, 20, 0.92);
  transition: transform 0.5s ease, filter 0.5s ease;
}

.media-card:hover img,
.media-card:focus-within img,
.gallery-card:hover img,
.gallery-card:focus-within img {
  transform: scale(1.02);
  filter: saturate(1.05) brightness(1.04);
}

.feature-shot:hover img,
.feature-shot:focus-within img {
  transform: scale(1.025);
  filter: saturate(1.06) brightness(1.05);
}

.feature-shot figcaption {
  transition: transform 0.35s ease, background 0.35s ease;
}

.feature-shot:hover figcaption,
.feature-shot:focus-within figcaption {
  transform: translateY(-2px);
  background: linear-gradient(180deg, rgba(12, 22, 38, 0.96), rgba(16, 27, 46, 0.97));
}

.section-head {
  max-width: 820px;
  margin-bottom: 20px;
  position: relative;
}

.section-head::after {
  content: "";
  display: block;
  width: 88px;
  height: 1px;
  margin-top: 16px;
  background: linear-gradient(90deg, rgba(255, 191, 224, 0.9), rgba(138, 243, 255, 0.18));
  box-shadow: var(--glow-pink);
}

.overview-grid,
.content-grid,
.image-strip,
.content-gallery,
.gallery-grid,
.faq-grid,
.update-list {
  display: grid;
  gap: 18px;
}

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

.image-strip {
  margin-top: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.info-panel,
.content-card,
.guide-nav,
.guide-card,
.update-card,
.faq-card {
  padding: 20px;
}

.section-alt {
  background:
    linear-gradient(180deg, rgba(13, 20, 34, 0.78), rgba(5, 11, 20, 0.36));
}

.split-showcase {
  margin-top: 24px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  align-items: stretch;
}

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

.showcase-copy {
  padding: 22px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 194, 229, 0.16);
  background:
    linear-gradient(180deg, rgba(16, 25, 43, 0.92), rgba(9, 17, 30, 0.9));
  box-shadow: var(--shadow);
  position: relative;
}

.showcase-copy::before {
  content: "";
  position: absolute;
  top: 16px;
  right: 18px;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 35%, rgba(255, 244, 251, 0.8) 0 16%, transparent 18%),
    radial-gradient(circle at 55% 55%, rgba(255, 185, 220, 0.24), transparent 70%);
  opacity: 0.4;
  filter: blur(0.5px);
}

.tag-list {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.tag-list li {
  padding: 8px 12px;
  font-size: 0.92rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 194, 229, 0.16);
  background: rgba(13, 23, 38, 0.82);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.guide-shell {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 20px;
  align-items: start;
}

.guide-nav {
  position: sticky;
  top: 100px;
}

.guide-nav h3 {
  margin-bottom: 14px;
}

.guide-nav a,
.guide-nav button {
  display: block;
  margin-top: 8px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(10, 19, 33, 0.74);
  color: var(--muted);
  border: 1px solid rgba(255, 194, 229, 0.08);
  width: 100%;
  text-align: left;
  cursor: pointer;
  transition:
    transform 0.24s ease,
    border-color 0.24s ease,
    background 0.24s ease,
    color 0.24s ease,
    box-shadow 0.24s ease;
}

.guide-nav a:hover,
.guide-nav a:focus-visible,
.guide-nav button:hover,
.guide-nav button:focus-visible {
  transform: translateX(4px);
  color: var(--text);
  border-color: rgba(255, 214, 235, 0.18);
  background: rgba(14, 25, 43, 0.88);
  box-shadow: 0 10px 20px rgba(255, 185, 220, 0.08);
}

.guide-body {
  display: grid;
  gap: 18px;
}

.guide-card ol,
.guide-card ul {
  margin: 0;
  padding-left: 22px;
}

.guide-card li + li {
  margin-top: 10px;
}

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

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

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.timeline-card {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 194, 229, 0.12);
  background: linear-gradient(180deg, rgba(15, 24, 41, 0.88), rgba(8, 17, 30, 0.8));
}

.timeline-card span,
.update-date {
  color: var(--secondary);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
}

.guide-note {
  margin-top: 18px;
}

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

.faq-list details,
.faq-card {
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 194, 229, 0.12);
  background: linear-gradient(180deg, rgba(14, 24, 42, 0.84), rgba(8, 16, 28, 0.82));
}

.faq-list details {
  padding: 0 18px;
}

.faq-list summary,
.faq-card summary {
  cursor: pointer;
  padding: 15px 0;
  list-style: none;
  font-weight: 700;
}

.faq-list summary::-webkit-details-marker,
.faq-card summary::-webkit-details-marker {
  display: none;
}

.faq-list details p,
.faq-card p {
  margin: 0 0 18px;
}

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

.update-card h3 {
  margin-top: 8px;
}

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

.gallery-card {
  padding: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(180deg, rgba(14, 24, 42, 0.9), rgba(7, 16, 29, 0.86));
}

.download-panel {
  padding: 24px;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 20px;
  align-items: center;
}

.download-media {
  padding: 12px;
}

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

.site-footer {
  padding: 30px 0 78px;
  border-top: 1px solid rgba(255, 194, 229, 0.1);
  background: linear-gradient(180deg, rgba(7, 13, 23, 0), rgba(8, 13, 24, 0.42));
}

.footer-row {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.6fr;
  gap: 18px;
  align-items: end;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.footer-nav a,
.footer-nav button {
  color: var(--muted);
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  transition: color 0.24s ease, text-shadow 0.24s ease, transform 0.24s ease;
}

.floating-download {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 40;
  min-width: 82px;
  min-height: 48px;
  padding: 0 16px;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  color: #031219;
  font-weight: 800;
  background:
    linear-gradient(135deg, #fff4fb 0%, #ffc7e4 42%, #a4f5ff 100%);
  box-shadow:
    0 18px 34px rgba(255, 185, 220, 0.24),
    0 12px 26px rgba(138, 243, 255, 0.18);
  overflow: hidden;
  transition:
    transform 0.28s ease,
    box-shadow 0.28s ease,
    filter 0.28s ease;
}

.floating-download:hover,
.floating-download:focus-visible {
  box-shadow:
    0 22px 40px rgba(255, 185, 220, 0.28),
    0 16px 30px rgba(138, 243, 255, 0.2);
  filter: saturate(1.04) brightness(1.02);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.overview-grid .reveal:nth-child(1),
.content-grid .reveal:nth-child(1),
.guide-body .reveal:nth-child(1),
.update-list .reveal:nth-child(1),
.gallery-grid .reveal:nth-child(1),
.faq-grid .reveal:nth-child(1) {
  transition-delay: 0.02s;
}

.overview-grid .reveal:nth-child(2),
.content-grid .reveal:nth-child(2),
.guide-body .reveal:nth-child(2),
.update-list .reveal:nth-child(2),
.gallery-grid .reveal:nth-child(2),
.faq-grid .reveal:nth-child(2) {
  transition-delay: 0.08s;
}

.overview-grid .reveal:nth-child(3),
.content-grid .reveal:nth-child(3),
.guide-body .reveal:nth-child(3),
.update-list .reveal:nth-child(3),
.gallery-grid .reveal:nth-child(3),
.faq-grid .reveal:nth-child(3) {
  transition-delay: 0.14s;
}

.content-grid .reveal:nth-child(4),
.guide-body .reveal:nth-child(4),
.gallery-grid .reveal:nth-child(4) {
  transition-delay: 0.2s;
}

.content-grid .reveal:nth-child(5),
.guide-body .reveal:nth-child(5),
.gallery-grid .reveal:nth-child(5) {
  transition-delay: 0.26s;
}

.content-grid .reveal:nth-child(6),
.guide-body .reveal:nth-child(6),
.gallery-grid .reveal:nth-child(6) {
  transition-delay: 0.32s;
}

.gallery-grid .reveal:nth-child(7) {
  transition-delay: 0.38s;
}

.gallery-grid .reveal:nth-child(8) {
  transition-delay: 0.44s;
}

@keyframes scan {
  0% {
    transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
  }
}

@media (min-width: 1280px) {
  .hero {
    padding-top: 64px;
    padding-bottom: 36px;
  }

  .hero-layout {
    grid-template-columns: minmax(0, 0.95fr) minmax(480px, 600px);
    gap: 44px;
  }

  .hero-visual {
    max-width: 600px;
  }

  .feature-shot {
    max-width: 600px;
  }
}

@media (max-width: 1220px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-copy {
    max-width: 720px;
  }

  .hero-visual,
  .feature-shot {
    max-width: 600px;
  }
}

@media (max-width: 1080px) {
  .hero-layout,
  .split-showcase,
  .guide-shell,
  .download-panel,
  .footer-row,
  .overview-grid,
  .image-strip,
  .content-grid,
  .content-gallery,
  .update-list,
  .gallery-grid,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    max-width: 600px;
  }

  .hero-points,
  .timeline-grid,
  .mini-grid {
    grid-template-columns: 1fr;
  }

  .guide-nav {
    position: static;
  }

  .footer-row {
    align-items: start;
  }
}

@media (max-width: 760px) {
  .container {
    width: min(var(--container), calc(100% - 20px));
  }

  body {
    font-size: 15px;
    line-height: 1.62;
  }

  .header-row {
    min-height: 68px;
  }

  .menu-toggle {
    display: inline-block;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 10px;
    right: 10px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 10px;
    border-radius: 20px;
    background: rgba(5, 14, 25, 0.96);
    border: 1px solid rgba(108, 249, 255, 0.12);
    box-shadow: var(--shadow);
  }

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

.site-nav a,
.site-nav button {
  width: 100%;
  padding: 10px;
  border-radius: 14px;
  font-size: 0.95rem;
}

  .hero {
    padding-top: 34px;
  }

  h1 {
    max-width: 100%;
    font-size: 1.72rem;
    line-height: 1.16;
  }

  h2 {
    font-size: 1.32rem;
    line-height: 1.28;
  }

  h3 {
    font-size: 1rem;
  }

  .hero-text {
    font-size: 0.96rem;
  }

  .hero-actions,
  .download-actions {
    gap: 10px;
    margin-top: 20px;
  }

  .btn {
    min-height: 44px;
    padding: 0 16px;
    font-size: 0.92rem;
  }

  .brand-logo {
    width: 40px;
    height: 40px;
  }

.info-panel,
.content-card,
.guide-nav,
.guide-card,
.update-card,
.faq-card,
.download-panel,
.showcase-copy {
  padding: 18px;
}

  .section-head::after {
    width: 68px;
  }

  .floating-download {
    right: 12px;
    bottom: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal,
  .btn,
  .floating-download,
  .media-card,
  .gallery-card,
  .media-card img,
  .gallery-card img,
  .feature-shot img,
  .feature-shot figcaption,
  .guide-nav a,
  .guide-nav button,
  .footer-nav a,
  .footer-nav button,
  .site-nav button {
    transition: none;
    animation: none;
  }

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