:root {
  --night: #0d111a;
  --night-deep: #090c13;
  --panel: #1a1524;
  --panel-soft: #211b2d;
  --panel-light: #272338;
  --ink: #f7f3f2;
  --muted: #c9c5d2;
  --muted-light: #f0edf7;
  --pink: #ff8da1;
  --pink-soft: #ffc1cb;
  --green: #39ff14;
  --green-dark: #1fc80b;
  --cyan: #7ee8e8;
  --line: rgba(255, 255, 255, 0.13);
  --line-strong: rgba(255, 141, 161, 0.42);
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.26);
  --shadow-tight: 0 10px 26px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 22px 46px rgba(0, 0, 0, 0.32);
  --glow-pink: 0 0 26px rgba(255, 141, 161, 0.2);
  --glow-green: 0 0 24px rgba(57, 255, 20, 0.18);
  --shell: min(1160px, calc(100% - 40px));
  --header-height: 76px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  background: var(--night);
}

body {
  margin: 0;
  background: var(--night);
  color: var(--ink);
  font-family: "Noto Sans SC", "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.menu-open {
  overflow: hidden;
}

body.menu-open main,
body.menu-open .site-footer {
  visibility: hidden;
  pointer-events: none;
}

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

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  font: inherit;
}

::selection {
  background: var(--pink);
  color: var(--night);
}

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.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;
}

.icon-sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}

.icon {
  width: 1em;
  height: 1em;
  flex: 0 0 auto;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 8px 12px;
  border: 1px solid var(--green);
  background: var(--night-deep);
  color: var(--green);
  transform: translateY(-160%);
  transition: transform 180ms ease;
}

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

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(13, 17, 26, 0.96);
  backdrop-filter: blur(14px);
}

.site-header.is-scrolled {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.26);
}

.header-shell {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  object-fit: cover;
  object-position: 50% 16%;
  background: var(--panel);
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.brand-copy {
  display: grid;
  min-width: 0;
  line-height: 1.2;
}

.brand-name {
  overflow: hidden;
  color: var(--ink);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: color 180ms ease;
}

.brand-sub {
  margin-top: 4px;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.08em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  position: relative;
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 0 10px;
  border: 1px solid transparent;
  color: #ffffff;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  text-shadow: none;
  border-radius: 999px;
  overflow: hidden;
  isolation: isolate;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.site-nav a .icon {
  position: relative;
  z-index: 1;
  width: 16px;
  height: 16px;
  stroke-width: 1.9;
}

.site-nav a span {
  position: relative;
  z-index: 1;
}

.site-nav a::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 141, 161, 0.28) 0%, rgba(255, 141, 161, 0.14) 48%, transparent 72%);
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.2);
  transition: opacity 220ms ease, transform 360ms ease;
}

.site-nav a:not(.nav-cta)::after {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: transparent;
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.55);
  transition: opacity 220ms ease, transform 320ms ease, box-shadow 220ms ease;
}

.site-nav a:not(.nav-cta):hover,
.site-nav a:not(.nav-cta):focus-visible,
.site-nav a:not(.nav-cta).is-active {
  border-color: rgba(255, 141, 161, 0.78);
  background: rgba(255, 141, 161, 0.05);
  color: #ffb3c0;
  box-shadow: 0 0 0 1px rgba(255, 141, 161, 0.14), 0 0 18px rgba(255, 141, 161, 0.12);
}

.site-nav a:not(.nav-cta):hover .icon,
.site-nav a:not(.nav-cta):focus-visible .icon,
.site-nav a:not(.nav-cta).is-active .icon {
  color: #ffb3c0;
}

.site-nav a:not(.nav-cta):hover::after,
.site-nav a:not(.nav-cta):focus-visible::after,
.site-nav a:not(.nav-cta).is-active::after {
  opacity: 1;
  box-shadow: 0 0 0 999px rgba(255, 141, 161, 0.08);
  transform: translate(-50%, -50%) scale(1);
}

.nav-cta {
  margin-left: 7px;
  border: 1px solid var(--green);
  border-radius: 999px;
  background: var(--green);
  color: #000000 !important;
  text-shadow: none;
  box-shadow: none;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: var(--green);
  box-shadow: 0 8px 16px rgba(57, 255, 20, 0.16);
  transform: translateY(-2px);
}

.menu-toggle {
  position: relative;
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--pink);
  cursor: pointer;
}

.menu-line {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 20px;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transform-origin: center;
  transition: opacity 160ms ease, transform 180ms ease, background-color 180ms ease;
}

.menu-line-top {
  transform: translate(-50%, calc(-50% - 7px));
}

.menu-line-middle {
  transform: translate(-50%, -50%);
}

.menu-line-bottom {
  transform: translate(-50%, calc(-50% + 7px));
}

.menu-toggle[aria-expanded="true"] .menu-line-top {
  transform: translate(-50%, -50%) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-line-middle {
  opacity: 0;
  transform: translate(-50%, -50%) scaleX(0.2);
}

.menu-toggle[aria-expanded="true"] .menu-line-bottom {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.section-band {
  position: relative;
  padding: 108px 0;
  overflow: hidden;
}

.section-band::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 1px;
  background: var(--line);
  content: "";
}

.section-tint {
  background: var(--panel);
}

.hero {
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  padding: 90px 0 105px;
  background: var(--night);
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(440px, 1.05fr);
  align-items: center;
  gap: clamp(42px, 7vw, 104px);
}

.hero-copy {
  max-width: 620px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  line-height: 1.5;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 700px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(29px, 3.5vw, 48px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.14;
}

.hero-text {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--muted-light);
  font-size: 17px;
  line-height: 1.9;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.button {
  position: relative;
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  text-shadow: none;
  overflow: hidden;
  isolation: isolate;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.button span,
.button .icon,
.nav-cta span,
.nav-cta .icon {
  position: relative;
  z-index: 1;
  text-shadow: none;
}

.button::before,
.nav-cta::before,
.friend-links-list a::before {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.42) 0%, rgba(255, 255, 255, 0.24) 46%, rgba(255, 255, 255, 0.02) 72%);
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, -50%) scale(0.2);
  transition: opacity 220ms ease, transform 360ms ease;
}

.button:hover::before,
.button:focus-visible::before,
.nav-cta:hover::before,
.nav-cta:focus-visible::before,
.friend-links-list a:hover::before,
.friend-links-list a:focus-visible::before {
  opacity: 1;
  transform: translate(-50%, -50%) scale(13);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.8;
}

.button-primary {
  background: var(--green);
  color: #000000;
  box-shadow: 0 6px 14px rgba(57, 255, 20, 0.12);
}

.button-primary:hover,
.button-primary:focus-visible {
  background: var(--green);
  box-shadow: 0 10px 18px rgba(57, 255, 20, 0.16);
}

.button-secondary {
  border-color: var(--line-strong);
  background: transparent;
  color: var(--pink-soft);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: var(--pink);
  background: rgba(255, 141, 161, 0.11);
}

.button-large {
  min-height: 56px;
  padding-inline: 24px;
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding: 0;
  margin: 34px 0 0;
  color: var(--muted);
  list-style: none;
  font-size: 13px;
}

.hero-points li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.hero-points li::before {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--pink);
  box-shadow: 0 0 10px rgba(255, 141, 161, 0.65);
  content: "";
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 620px;
  margin: 30px 0 0;
}

.hero-facts div {
  min-height: 72px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  background: rgba(26, 21, 36, 0.72);
  transition: border-color 180ms ease, background-color 180ms ease, transform 180ms ease;
}

.hero-facts div:hover {
  border-color: var(--line-strong);
  background: rgba(33, 27, 45, 0.92);
  transform: translateY(-2px);
}

.hero-facts dt {
  color: var(--green);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.hero-facts dd {
  margin: 4px 0 0;
  color: var(--muted-light);
  font-size: 13px;
  font-weight: 800;
}

.hero-media {
  position: relative;
  min-height: 580px;
  margin: 0;
}

.hero-main {
  position: absolute;
  z-index: 2;
  top: 0;
  right: 0;
  width: min(46%, 260px);
  height: auto;
  aspect-ratio: 520 / 503;
  border: 1px solid rgba(255, 141, 161, 0.46);
  background: var(--night-deep);
  object-fit: contain;
  object-position: 50% 10%;
  box-shadow: var(--shadow);
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease, filter 220ms ease;
}

.hero-secondary {
  position: absolute;
  top: 104px;
  left: 0;
  width: 90%;
  height: auto;
  aspect-ratio: 16 / 9;
  background: var(--night-deep);
  object-fit: contain;
  object-position: center;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease, filter 220ms ease;
}

.hero-secondary::after {
  display: block;
  content: "";
}

.hero-media figcaption {
  position: absolute;
  right: 18px;
  bottom: 0;
  left: 18px;
  z-index: 3;
  padding: 12px 14px;
  border-left: 3px solid var(--green);
  background: rgba(9, 12, 19, 0.9);
  color: var(--muted-light);
  font-size: 12px;
  line-height: 1.6;
}

.quick-band {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
}

.quick-grid article {
  position: relative;
  min-height: 100px;
  padding: 22px 18px;
  background: var(--panel-soft);
  overflow: hidden;
  isolation: isolate;
  transition: background-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.quick-grid article::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 141, 161, 0.15), transparent 44%, rgba(57, 255, 20, 0.1));
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.quick-grid article > * {
  position: relative;
  z-index: 1;
}

.quick-grid article:nth-child(2n) {
  background: var(--panel-light);
}

.quick-grid article:hover {
  background: #2d253d;
  transform: translateY(-3px);
}

.quick-grid strong {
  display: block;
  color: var(--pink-soft);
  font-size: 15px;
}

.quick-grid span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.section-header {
  max-width: 760px;
  margin-bottom: 42px;
}

.section-header h2,
.cta-copy h2 {
  max-width: 800px;
  margin: 0;
  color: var(--ink);
  font-size: clamp(23px, 2.8vw, 32px);
  font-weight: 900;
  letter-spacing: 0;
  line-height: 1.25;
}

.section-lead {
  max-width: 700px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 16px;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, 0.95fr);
  gap: 52px;
  align-items: center;
}

.prose {
  max-width: 690px;
}

.prose p {
  margin: 0 0 20px;
  color: var(--muted-light);
  font-size: 17px;
}

.prose h3 {
  margin: 34px 0 10px;
  color: var(--pink-soft);
  font-size: 22px;
  line-height: 1.35;
}

.section-figure {
  margin: 0;
}

.section-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  border: 1px solid var(--line-strong);
  background: var(--night-deep);
  object-fit: contain;
  box-shadow: var(--shadow-tight);
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease, filter 220ms ease;
}

figure figcaption {
  margin-top: 11px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(330px, 0.95fr) minmax(0, 1.05fr);
  gap: 24px;
  align-items: start;
}

.content-card {
  position: relative;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-tight);
  overflow: hidden;
  isolation: isolate;
  transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.content-card::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 141, 161, 0.12), transparent 52%, rgba(126, 232, 232, 0.08));
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

.content-card > * {
  position: relative;
  z-index: 1;
}

.content-figure {
  margin: 0;
}

.content-figure img {
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  object-fit: contain;
}

.content-main-figure img {
  border: 1px solid var(--line-strong);
  background: var(--night-deep);
  box-shadow: var(--shadow-tight);
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease, filter 220ms ease;
}

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

.content-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: 24px 24px 25px;
}

.content-copy h3,
.feature-card h3,
.guide-list h3 {
  margin: 0;
  color: var(--pink-soft);
  font-size: 20px;
  line-height: 1.4;
}

.content-copy p,
.feature-card p,
.guide-list p {
  margin: 11px 0 0;
  color: #d3cfda;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.9;
}

.guide-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: guide;
}

.guide-list li {
  position: relative;
  min-height: 196px;
  padding: 30px 26px 26px 74px;
  border: 1px solid var(--line);
  background: var(--night);
  overflow: hidden;
  isolation: isolate;
  transition: border-color 200ms ease, background-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.guide-list li::before {
  position: absolute;
  z-index: 1;
  top: 28px;
  left: 24px;
  color: var(--green);
  content: counter(guide, decimal-leading-zero);
  counter-increment: guide;
  font-size: 24px;
  font-weight: 900;
  line-height: 1;
}

.guide-list li::after {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(135deg, rgba(57, 255, 20, 0.12), transparent 48%, rgba(255, 141, 161, 0.1));
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

.guide-list li > * {
  position: relative;
  z-index: 1;
}

.guide-list p {
  max-width: 580px;
}

.guide-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(300px, 0.92fr);
  align-items: start;
  gap: 44px;
}

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

.guide-media {
  position: sticky;
  top: calc(var(--header-height) + 28px);
  margin: 0;
}

.guide-media img {
  width: 100%;
  height: auto;
  aspect-ratio: auto;
  border: 1px solid var(--line-strong);
  background: var(--night-deep);
  object-fit: contain;
  box-shadow: var(--shadow-tight);
  transition: border-color 220ms ease, box-shadow 220ms ease, transform 220ms ease, filter 220ms ease;
}

.guide-media figcaption {
  margin-top: 11px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

.feature-card {
  position: relative;
  min-height: 190px;
  padding: 24px 20px;
  background: var(--panel);
  overflow: hidden;
  isolation: isolate;
  transition: background-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.feature-card::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255, 141, 161, 0.12), transparent 46%, rgba(57, 255, 20, 0.08));
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 200ms ease;
}

.feature-card > * {
  position: relative;
  z-index: 1;
}

.feature-card:nth-child(3n + 2) {
  background: var(--panel-soft);
}

.feature-card:nth-child(3n + 3) {
  background: var(--night);
}

.update-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 46px;
  padding: 0;
  margin: 0;
  list-style: none;
  counter-reset: update;
}

.update-list li {
  position: relative;
  min-height: 74px;
  padding: 17px 0 17px 50px;
  border-bottom: 1px solid var(--line);
  color: var(--muted-light);
  font-size: 14px;
  line-height: 1.75;
}

.update-list li::before {
  position: absolute;
  top: 19px;
  left: 0;
  width: 31px;
  height: 31px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--green);
  color: var(--green);
  content: counter(update, decimal-leading-zero);
  counter-increment: update;
  font-size: 11px;
  font-weight: 900;
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 18px;
}

.faq-item {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
  isolation: isolate;
  transition: border-color 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.faq-item[open] {
  border-color: var(--line-strong);
}

.faq-item::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(255, 141, 161, 0.1), transparent 62%);
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 180ms ease;
}

.faq-item summary {
  position: relative;
  display: flex;
  min-height: 66px;
  align-items: center;
  padding: 17px 48px 17px 20px;
  color: var(--muted-light);
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
  line-height: 1.5;
  list-style: none;
}

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

.faq-item summary::after {
  position: absolute;
  top: 50%;
  right: 20px;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--pink);
  border-bottom: 2px solid var(--pink);
  content: "";
  transform: translateY(-65%) rotate(45deg);
  transition: transform 180ms ease;
}

.faq-item[open] summary {
  color: var(--pink-soft);
}

.faq-item[open] summary::after {
  transform: translateY(-20%) rotate(225deg);
}

.faq-item p {
  position: relative;
  z-index: 1;
  padding: 0 20px 20px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.floating-detail {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 15;
  min-width: 126px;
  justify-content: center;
  padding-inline: 18px;
  box-shadow: 0 12px 28px rgba(57, 255, 20, 0.2);
  white-space: nowrap;
  transition: opacity 180ms ease, visibility 180ms ease, transform 180ms ease, background-color 180ms ease, box-shadow 180ms ease;
}

.cta-band {
  padding: 66px 0;
  border-top: 1px solid var(--line);
  background: var(--panel);
}

.cta-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.cta-copy h2 {
  font-size: clamp(24px, 2.5vw, 32px);
}

.cta-copy > p:last-child {
  max-width: 680px;
  margin: 12px 0 0;
  color: var(--muted);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--night-deep);
}

.friend-links {
  background: var(--pink);
  color: var(--night);
}

.friend-links-shell {
  display: grid;
  justify-items: center;
  gap: 16px;
  padding: 22px 0 22px;
  text-align: center;
}

.friend-links h2 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(23px, 2.8vw, 34px);
  font-weight: 900;
  line-height: 1.15;
  text-shadow: 0 2px 10px rgba(13, 17, 26, 0.22);
}

.friend-links-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px 14px;
}

.friend-links-list a {
  position: relative;
  display: inline-flex;
  min-width: 126px;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--night);
  font-size: 16px;
  font-weight: 800;
  line-height: 1.2;
  text-decoration: none;
  overflow: hidden;
  isolation: isolate;
  box-shadow: 0 10px 20px rgba(13, 17, 26, 0.12);
  transition: background-color 180ms ease, box-shadow 180ms ease, color 180ms ease, transform 180ms ease;
}

.friend-links-list a:hover,
.friend-links-list a:focus-visible {
  background: var(--night);
  color: var(--green);
  box-shadow: 0 16px 32px rgba(13, 17, 26, 0.2);
  transform: translateY(-2px);
}

.footer-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 84px;
  color: var(--muted);
  font-size: 12px;
}

.footer-shell p {
  margin: 0;
}

.footer-shell nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 16px;
}

.footer-shell nav a,
.footer-shell a {
  color: var(--pink-soft);
  text-decoration: none;
}

.footer-shell nav a:hover,
.footer-shell nav a:focus-visible,
.footer-shell a:hover,
.footer-shell a:focus-visible {
  color: var(--green);
}

@media (hover: hover) and (pointer: fine) {
  .brand:hover .brand-mark,
  .brand:focus-visible .brand-mark {
    border-color: var(--green);
    box-shadow: var(--glow-green);
    transform: scale(1.05);
  }

  .brand:hover .brand-name,
  .brand:focus-visible .brand-name {
    color: var(--pink-soft);
  }

  .hero-media:hover .hero-main {
    border-color: var(--green);
    box-shadow: var(--shadow-hover), var(--glow-green);
    filter: saturate(1.06) contrast(1.03);
    transform: translateY(-6px) rotate(0.6deg);
  }

  .hero-media:hover .hero-secondary {
    border-color: var(--pink);
    box-shadow: var(--shadow-hover), var(--glow-pink);
    filter: saturate(1.06) contrast(1.03);
    transform: translateY(-4px);
  }

  .section-figure:hover img,
  .content-main-figure:hover img,
  .guide-media:hover img {
    border-color: var(--pink);
    box-shadow: var(--shadow-hover), var(--glow-pink);
    filter: saturate(1.08) contrast(1.04);
    transform: scale(1.018);
  }

  .quick-grid article:hover::before,
  .content-card:hover::before,
  .content-card:focus-within::before,
  .guide-list li:hover::after,
  .feature-card:hover::before,
  .faq-item:hover::before,
  .faq-item:focus-within::before {
    opacity: 1;
  }

  .quick-grid article:hover {
    box-shadow: 0 16px 34px rgba(0, 0, 0, 0.2);
  }

  .content-card:hover,
  .content-card:focus-within,
  .guide-list li:hover,
  .feature-card:hover,
  .faq-item:hover,
  .faq-item:focus-within {
    border-color: var(--line-strong);
    box-shadow: var(--shadow-hover);
    transform: translateY(-5px);
  }

  .feature-card:hover {
    background: var(--panel-light);
  }

  .faq-item:hover summary,
  .faq-item:focus-within summary {
    color: var(--pink-soft);
  }

  .update-list li {
    transition: border-color 180ms ease, color 180ms ease, transform 180ms ease;
  }

  .update-list li::before {
    transition: background-color 180ms ease, box-shadow 180ms ease, color 180ms ease;
  }

  .update-list li:hover {
    border-color: var(--line-strong);
    color: var(--ink);
    transform: translateX(4px);
  }

  .update-list li:hover::before {
    background: rgba(57, 255, 20, 0.12);
    box-shadow: var(--glow-green);
  }

  .footer-shell a:hover,
  .footer-shell a:focus-visible {
    text-shadow: var(--glow-green);
  }
}

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

@media (max-width: 1080px) {
  .site-nav a {
    padding-inline: 8px;
    font-size: 14px;
  }

  .site-nav a .icon {
    width: 15px;
    height: 15px;
  }

  .hero-shell {
    grid-template-columns: minmax(0, 0.94fr) minmax(390px, 1.06fr);
    gap: 48px;
  }

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

@media (max-width: 900px) {
  :root {
    --shell: min(100% - 32px, 720px);
  }

  .site-header {
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
  }

  .menu-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .site-nav {
    position: fixed;
    top: var(--header-height);
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 21;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 14px 16px 28px;
    background: rgba(9, 12, 19, 0.98);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-8px);
    overflow-y: auto;
    overscroll-behavior: contain;
    transition: opacity 180ms ease, transform 180ms ease;
  }

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

  body.menu-open .floating-detail {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(8px);
  }

  .site-nav a {
    flex: 0 0 auto;
    min-height: 52px;
    padding-inline: 12px;
    border-bottom: 1px solid var(--line);
    font-size: 15px;
  }

  .site-nav a .icon {
    width: 17px;
    height: 17px;
  }

  .site-nav a:not(.nav-cta)::after {
    top: 50%;
    left: 50%;
    width: 38px;
    height: 38px;
    transform: translate(-50%, -50%) scale(0.55);
  }

  .nav-cta {
    margin: 16px 0 0;
    justify-content: center;
    border-bottom: 0 !important;
  }

  .hero {
    min-height: auto;
    padding-top: 74px;
  }

  .hero-shell,
  .intro-grid,
  .guide-layout {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: none;
  }

  .hero-media {
    min-height: min(70vw, 570px);
    max-width: 660px;
  }

  .guide-media {
    position: static;
    max-width: 660px;
  }

  .hero-main {
    width: min(31%, 220px);
    height: auto;
    aspect-ratio: 520 / 503;
    max-height: none;
  }

  .hero-secondary {
    width: 90%;
    height: auto;
    aspect-ratio: 16 / 9;
  }

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

  .feature-card {
    min-height: 172px;
  }
}

@media (max-width: 620px) {
  :root {
    --shell: min(100% - 24px, 520px);
  }

  body {
    font-size: 15px;
  }

  .section-band {
    padding: 74px 0;
  }

  .hero {
    padding: 58px 0 74px;
  }

  .brand-name {
    max-width: 210px;
  }

  .hero h1 {
    font-size: clamp(27px, 8vw, 34px);
  }

  .hero-text {
    font-size: 15px;
    line-height: 1.8;
  }

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

  .button {
    width: 100%;
  }

  .hero-media {
    min-height: 76vw;
  }

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

  .hero-main {
    width: 33%;
    height: auto;
    aspect-ratio: 520 / 503;
  }

  .hero-secondary {
    top: 70px;
    width: 91%;
    height: auto;
    aspect-ratio: 16 / 9;
  }

  .hero-media figcaption {
    right: 0;
    bottom: 0;
    left: 0;
    padding: 9px 11px;
    font-size: 11px;
  }

  .section-header {
    margin-bottom: 30px;
  }

  .section-header h2,
  .cta-copy h2 {
    font-size: 23px;
  }

  .prose p {
    font-size: 15px;
  }

  .quick-grid,
  .content-grid,
  .guide-list,
  .feature-grid,
  .update-list,
  .faq-grid {
    grid-template-columns: 1fr;
  }

  .quick-grid {
    gap: 1px;
  }

  .content-copy {
    padding: 18px 18px 20px;
  }

  .guide-list li {
    min-height: 0;
    padding: 26px 20px 22px 64px;
  }

  .guide-list li::before {
    top: 25px;
    left: 20px;
  }

  .feature-card {
    min-height: 0;
    padding: 21px 18px 23px;
  }

  .update-list li {
    min-height: 0;
    padding-top: 15px;
    padding-bottom: 15px;
    padding-left: 45px;
  }

  .update-list li::before {
    top: 16px;
  }

  .cta-shell,
  .footer-shell {
    align-items: flex-start;
    flex-direction: column;
  }

  .cta-shell {
    gap: 22px;
  }

  .footer-shell {
    justify-content: center;
    padding: 24px 0;
  }

  .footer-shell nav {
    justify-content: flex-start;
  }

  .friend-links-shell {
    gap: 14px;
    padding: 20px 0;
  }

  .friend-links-list {
    gap: 8px;
  }

  .friend-links-list a {
    min-width: min(100%, 136px);
    min-height: 42px;
    padding: 0 18px;
    font-size: 15px;
  }

  .floating-detail {
    right: 12px;
    bottom: 12px;
    min-width: 0;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .button::before,
  .nav-cta::before,
  .friend-links-list a::before {
    display: none;
  }

  .button:hover,
  .button:focus-visible,
  .nav-cta:hover,
  .nav-cta:focus-visible,
  .friend-links-list a:hover,
  .friend-links-list a:focus-visible,
  .quick-grid article:hover,
  .content-card:hover,
  .content-card:focus-within,
  .guide-list li:hover,
  .feature-card:hover,
  .faq-item:hover,
  .faq-item:focus-within,
  .update-list li:hover,
  .section-figure:hover img,
  .content-main-figure:hover img,
  .guide-media:hover img,
  .hero-media:hover .hero-main,
  .hero-media:hover .hero-secondary {
    transform: none !important;
  }
}