:root {
  --ink: #1d1420;
  --muted: #6f6070;
  --purple: #4a154b;
  --purple-deep: #250b2c;
  --purple-soft: #7e3d7e;
  --rose: #d9c3d0;
  --rose-pale: #f5edf2;
  --cyan: #2ee6d6;
  --green: #8cff9b;
  --white: #fff;
  --line: rgba(74, 21, 75, .16);
  --shadow: 0 22px 60px rgba(37, 11, 44, .22);
  --radius: 8px;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  color: var(--ink);
  background: #fffafc;
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}

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

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

p {
  margin: 0 0 1rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 20;
  padding: .6rem .9rem;
  background: var(--cyan);
  color: #071819;
  border-radius: var(--radius);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid rgba(255, 255, 255, .12);
  background: rgba(37, 11, 44, .92);
  backdrop-filter: blur(16px);
  transition: box-shadow .25s ease, background .25s ease, border-color .25s ease;
}

.site-header.is-scrolled {
  border-color: rgba(46, 230, 214, .24);
  background: rgba(37, 11, 44, .96);
  box-shadow: 0 14px 38px rgba(23, 6, 28, .28);
}

.nav-wrap {
  max-width: 1180px;
  margin: 0 auto;
  min-height: 72px;
  padding: 0 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-weight: 800;
  letter-spacing: 0;
  transition: color .2s ease, transform .2s ease;
}

.brand:hover,
.brand:focus-visible {
  color: var(--cyan);
  transform: translateY(-1px);
  outline: none;
}

.brand-mark {
  width: 42px;
  height: 42px;
  display: block;
  overflow: hidden;
  border: 1px solid rgba(46, 230, 214, .5);
  background: linear-gradient(145deg, var(--purple), #821a6e);
  border-radius: var(--radius);
  box-shadow: inset 0 0 18px rgba(46, 230, 214, .24);
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.brand:hover .brand-mark,
.brand:focus-visible .brand-mark {
  border-color: var(--green);
  box-shadow: inset 0 0 20px rgba(46, 230, 214, .32), 0 0 20px rgba(46, 230, 214, .28);
  transform: rotate(-2deg);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.brand-text {
  font-size: 1.05rem;
}

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

.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 12px;
  color: rgba(255, 255, 255, .86);
  font-size: .94rem;
  border: 1px solid transparent;
  border-radius: 999px;
  transition: color .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

.site-nav a:hover,
.site-nav a:focus-visible {
  color: var(--cyan);
  border-color: rgba(46, 230, 214, .72);
  background: rgba(46, 230, 214, .08);
  box-shadow: inset 0 0 0 1px rgba(140, 255, 155, .16), 0 0 16px rgba(46, 230, 214, .18);
  outline: none;
}

.site-nav .nav-cta {
  margin-left: 6px;
  color: #071819;
  background: var(--cyan);
  border-color: rgba(46, 230, 214, .78);
  font-weight: 700;
}

.site-nav .nav-cta:hover,
.site-nav .nav-cta:focus-visible {
  color: #071819;
  border-color: var(--green);
  background: var(--green);
  box-shadow: 0 0 18px rgba(140, 255, 155, .35);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: var(--radius);
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: #fff;
  transform-origin: center;
  transition: transform .2s ease, opacity .2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  min-height: 690px;
  display: grid;
  align-items: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scale(1.01);
  animation: heroDrift 18s ease-in-out infinite alternate;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(25, 7, 28, .96) 0%, rgba(43, 12, 50, .86) 42%, rgba(43, 12, 50, .36) 100%),
    linear-gradient(0deg, rgba(37, 11, 44, .9), transparent 46%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  width: 100%;
  margin: 0 auto;
  padding: 120px 22px 76px;
  color: #fff;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--cyan);
  font-weight: 800;
  letter-spacing: 0;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.18;
  letter-spacing: 0;
}

h1 {
  max-width: 840px;
  font-size: clamp(2.05rem, 4.8vw, 4.25rem);
  color: #f0d5e8;
  text-shadow: 0 6px 24px rgba(74, 21, 75, .52);
}

.hero-lead {
  max-width: 770px;
  margin-top: 24px;
  color: rgba(255, 255, 255, .86);
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 32px 0;
}

.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  padding: 12px 20px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-weight: 800;
  transition: transform .2s ease, color .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.btn-primary {
  color: #071819;
  background: linear-gradient(135deg, var(--cyan), var(--green));
  border-color: rgba(140, 255, 155, .64);
  box-shadow: 0 14px 34px rgba(46, 230, 214, .26);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  color: #071819;
  border-color: #fff;
  box-shadow: 0 0 0 3px rgba(140, 255, 155, .18), 0 18px 42px rgba(46, 230, 214, .34);
}

.btn-secondary {
  color: #fff;
  border: 1px solid rgba(255, 255, 255, .28);
  background: rgba(255, 255, 255, .09);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  color: var(--cyan);
  border-color: rgba(46, 230, 214, .75);
  box-shadow: inset 0 0 0 1px rgba(140, 255, 155, .16), 0 0 18px rgba(46, 230, 214, .24);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 160px));
  gap: 12px;
  margin: 34px 0 0;
}

.hero-facts div {
  padding: 14px;
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .08);
}

.hero-facts dt {
  color: var(--rose);
  font-size: .82rem;
}

.hero-facts dd {
  margin: 4px 0 0;
  font-weight: 800;
}

.section {
  padding: 88px 0;
}

.section-dark {
  background: var(--purple-deep);
  color: #fff;
}

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

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 22px;
}

.two-col,
.guide-layout,
.footer-grid,
.cta-box {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
  gap: 46px;
  align-items: center;
}

.section-head {
  max-width: 780px;
  margin-bottom: 34px;
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.copy .section-kicker,
.copy h2 {
  text-align: center;
}

.section-head p:not(.section-kicker) {
  color: var(--muted);
}

h2 {
  font-size: clamp(1.55rem, 2.7vw, 2.45rem);
  color: var(--purple);
  margin-bottom: 16px;
}

.section-dark h2 {
  color: #f0d5e8;
}

.section-dark .section-head p:not(.section-kicker) {
  color: rgba(255, 255, 255, .82);
}

h3 {
  font-size: 1.18rem;
  color: var(--purple);
  margin-bottom: 10px;
}

.section-dark h3 {
  color: #fff;
}

.copy p {
  color: #514653;
}

.signal-list {
  padding: 0;
  margin: 24px 0 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.signal-list li {
  padding: 12px 14px;
  border-left: 3px solid var(--cyan);
  background: #fff;
  border-radius: 0 var(--radius) var(--radius) 0;
  box-shadow: 0 8px 22px rgba(74, 21, 75, .08);
}

.media-card,
.wide-media,
.gallery figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius);
  background: #fff;
  box-shadow: var(--shadow);
  transition: transform .28s ease, box-shadow .28s ease, border-color .28s ease;
}

.media-card::after,
.wide-media::after,
.gallery figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 1px solid rgba(46, 230, 214, 0);
  border-radius: inherit;
  transition: border-color .28s ease, box-shadow .28s ease;
}

.media-card:hover,
.wide-media:hover,
.gallery figure:hover {
  transform: translateY(-4px);
  box-shadow: 0 28px 70px rgba(37, 11, 44, .28);
}

.media-card:hover::after,
.wide-media:hover::after,
.gallery figure:hover::after {
  border-color: rgba(46, 230, 214, .52);
  box-shadow: inset 0 0 0 1px rgba(140, 255, 155, .16);
}

.media-card img,
.wide-media img,
.gallery img {
  width: 100%;
  object-fit: cover;
  transition: transform .45s ease, filter .45s ease;
}

.media-card:hover img,
.wide-media:hover img,
.gallery figure:hover img {
  transform: scale(1.035);
  filter: saturate(1.08) contrast(1.03);
}

.media-card figcaption {
  padding: 12px 14px;
  color: var(--muted);
  font-size: .92rem;
}

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

.info-card,
.feature-list article,
.steps article,
.faq-list details {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 10px 30px rgba(74, 21, 75, .08);
  transition: transform .24s ease, border-color .24s ease, box-shadow .24s ease, background .24s ease;
}

.info-card::before,
.feature-list article::before,
.steps article::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 0;
  height: 3px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), var(--green));
  opacity: 0;
  transform: scaleX(.4);
  transition: opacity .24s ease, transform .24s ease;
}

.info-card:hover,
.feature-list article:hover,
.steps article:hover {
  transform: translateY(-5px);
  border-color: rgba(46, 230, 214, .5);
  box-shadow: 0 20px 46px rgba(74, 21, 75, .16);
}

.info-card:hover::before,
.feature-list article:hover::before,
.steps article:hover::before {
  opacity: 1;
  transform: scaleX(1);
}

.info-card {
  padding: 22px;
}

.card-icon {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 16px;
  border-radius: var(--radius);
  color: var(--purple-deep);
  background: linear-gradient(135deg, var(--cyan), var(--green));
  font-weight: 900;
  transition: transform .24s ease, box-shadow .24s ease;
}

.info-card:hover .card-icon {
  transform: rotate(-4deg) scale(1.06);
  box-shadow: 0 10px 22px rgba(46, 230, 214, .22);
}

.info-card p,
.feature-list p,
.steps p,
.faq-list p {
  color: var(--muted);
}

.wide-media {
  margin-top: 34px;
}

.wide-media img {
  aspect-ratio: 1200 / 554;
}

.steps {
  display: grid;
  gap: 14px;
}

.steps article,
.feature-list article {
  padding: 22px;
}

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

.gallery {
  margin-top: 34px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.gallery img {
  aspect-ratio: 16 / 9;
}

.updates .timeline {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.timeline li {
  position: relative;
  padding: 18px 18px 18px 22px;
  border-left: 3px solid var(--cyan);
  background: rgba(255, 255, 255, .08);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: rgba(255, 255, 255, .86);
  transition: transform .24s ease, background .24s ease, box-shadow .24s ease, border-color .24s ease;
}

.timeline li:hover {
  transform: translateX(4px);
  border-color: var(--green);
  background: rgba(255, 255, 255, .12);
  box-shadow: 0 14px 34px rgba(0, 0, 0, .16);
}

.timeline strong {
  color: #fff;
}

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

.faq-list details {
  padding: 0;
}

.faq-list details:hover,
.faq-list details[open] {
  border-color: rgba(46, 230, 214, .46);
  box-shadow: 0 16px 38px rgba(74, 21, 75, .14);
}

.faq-list summary {
  cursor: pointer;
  padding: 18px 22px;
  color: var(--purple);
  font-weight: 800;
  transition: color .2s ease, background .2s ease;
}

.faq-list summary:hover,
.faq-list details[open] summary {
  color: #7b1f73;
  background: linear-gradient(90deg, rgba(46, 230, 214, .08), transparent);
}

.faq-list details[open] summary {
  border-bottom: 1px solid var(--line);
}

.faq-list p {
  padding: 16px 22px 20px;
}

.cta-section {
  padding-top: 30px;
}

.cta-box {
  padding: 34px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--purple), var(--purple-deep));
  color: #fff;
  box-shadow: var(--shadow);
}

.cta-box h2 {
  color: #f0d5e8;
}

.ui-icon {
  width: 1.05em;
  height: 1.05em;
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
}

.ui-icon svg {
  width: 100%;
  height: 100%;
  display: block;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.btn-primary .ui-icon,
.nav-cta .ui-icon {
  color: #164243;
}

.btn-primary .ui-icon,
.nav-cta .ui-icon {
  width: 1.72em;
  height: 1.72em;
  border-radius: 50%;
  background: rgba(255, 255, 255, .56);
}

.btn-secondary .ui-icon {
  width: 1.72em;
  height: 1.72em;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
}

.cta-box p {
  color: rgba(255, 255, 255, .82);
}

.cta-box .btn {
  justify-self: end;
}

.site-footer {
  padding: 34px 0;
  color: rgba(255,255,255,.76);
  background: #17061c;
}

.friend-links {
  position: relative;
  overflow: hidden;
  padding: 64px 0 58px;
  background:
    linear-gradient(135deg, rgba(46, 230, 214, .08) 0 1px, transparent 1px 46px),
    linear-gradient(135deg, #250b2c, var(--purple) 52%, #17061c);
  color: #fff;
}

.friend-links::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(circle at 50% 20%, rgba(46, 230, 214, .14), transparent 34%);
}

.friend-links .container {
  position: relative;
  z-index: 1;
  text-align: center;
}

.friend-links h2 {
  margin: 0 0 24px;
  color: #f0d5e8;
  font-size: clamp(1.55rem, 2.6vw, 2.35rem);
}

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

.friend-link-list a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  max-width: min(100%, 560px);
  padding: 10px 18px;
  border: 1px solid rgba(240, 213, 232, .62);
  border-radius: 999px;
  color: #fff7ff;
  background: rgba(255, 255, 255, .1);
  box-shadow: 0 12px 30px rgba(0, 0, 0, .16);
  font-weight: 800;
  line-height: 1.45;
  transition: transform .22s ease, color .22s ease, border-color .22s ease, background .22s ease, box-shadow .22s ease;
}

.friend-link-list a span {
  width: 11px;
  height: 11px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(46, 230, 214, .16);
}

.friend-link-list a:hover,
.friend-link-list a:focus-visible {
  color: var(--green);
  border-color: var(--cyan);
  background: rgba(46, 230, 214, .12);
  box-shadow: 0 0 0 3px rgba(46, 230, 214, .12), 0 18px 42px rgba(0, 0, 0, .24);
  transform: translateY(-2px);
  outline: none;
}

.footer-grid {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
}

.site-footer strong {
  color: #fff;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.site-footer a {
  color: rgba(255,255,255,.82);
  transition: color .2s ease;
}

.site-footer a:hover,
.site-footer a:focus-visible {
  color: var(--cyan);
  outline: none;
}

@keyframes heroDrift {
  from {
    transform: scale(1.01) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.045) translate3d(-1.2%, .8%, 0);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
  }
}

@media (max-width: 960px) {
  .menu-toggle {
    display: block;
  }

  .site-nav {
    position: absolute;
    left: 14px;
    right: 14px;
    top: 72px;
    display: none;
    padding: 12px;
    flex-direction: column;
    align-items: stretch;
    background: rgba(37, 11, 44, .98);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: var(--radius);
  }

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

  .site-nav .nav-cta {
    margin-left: 0;
    text-align: center;
  }

  .hero {
    min-height: 640px;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(25, 7, 28, .96), rgba(43, 12, 50, .68));
  }

  .two-col,
  .guide-layout,
  .cta-box {
    grid-template-columns: 1fr;
  }

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

  .cta-box .btn {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .nav-wrap {
    padding: 0 16px;
  }

  .brand-text {
    font-size: 1rem;
  }

  .hero {
    min-height: 720px;
  }

  .hero-bg {
    object-position: 62% center;
  }

  .hero-content {
    padding: 110px 18px 58px;
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-facts,
  .content-grid,
  .feature-list,
  .updates .timeline,
  .gallery,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 64px 0;
  }

  .container {
    padding: 0 18px;
  }

  .cta-box {
    padding: 24px;
  }
}