@font-face {
  font-family: "Smiley Sans";
  src: url("assets/fonts/smiley-sans.woff2") format("woff2");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

:root {
  --pink: #ff6f86;
  --pink-soft: #fff0f3;
  --blue: #4597ff;
  --purple: #a66bff;
  --ink: #111116;
  --muted: #8b8991;
  --line: #f1edf1;
  --page-bg: #fefefe;
  --shadow: 0 24px 70px rgba(80, 70, 100, 0.12);
  --container: 1660px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--page-bg);
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }

.container { width: min(calc(100% - 96px), var(--container)); margin-inline: auto; }

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1000;
  padding: 10px 16px;
  color: #fff;
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.splash {
  position: fixed;
  inset: 0;
  z-index: 999;
  display: grid;
  place-content: center;
  justify-items: center;
  background: #fff;
  transition: opacity .55s ease, visibility .55s ease;
}
.splash p { margin: 18px 0 0; font-size: 18px; font-weight: 700; letter-spacing: .16em; }
body.is-ready .splash { opacity: 0; visibility: hidden; pointer-events: none; }

.brand { display: inline-flex; align-items: center; gap: 14px; font-weight: 800; }
.brand-logo {
  width: 56px;
  height: 56px;
  object-fit: contain;
  object-position: center;
  border-radius: 0;
  filter: drop-shadow(0 8px 12px rgba(255, 91, 120, .22));
}
.brand-logo--splash { width: 76px; height: 76px; animation: splash-breathe 1.1s ease-in-out infinite alternate; }
.brand-name { font-size: 22px; letter-spacing: .05em; }

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 20;
  height: 148px;
}
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; }
.site-nav { display: flex; align-items: center; gap: clamp(34px, 3.4vw, 72px); color: #5f5c63; font-size: 19px; }
.site-nav a:not(.nav-download) { position: relative; padding: 14px 0; }
.site-nav a:not(.nav-download)::after {
  content: "";
  position: absolute;
  right: 50%; bottom: 4px; left: 50%;
  height: 2px;
  background: var(--pink);
  transition: left .25s ease, right .25s ease;
}
.site-nav a:hover::after, .site-nav a:focus-visible::after { left: 0; right: 0; }
.nav-download { padding: 13px 25px; color: var(--pink); border: 2px solid var(--pink); border-radius: 999px; font-weight: 700; transition: .25s ease; }
.nav-download:hover, .nav-download:focus-visible { color: #fff; background: var(--pink); box-shadow: 0 12px 24px rgba(255,111,134,.25); transform: translateY(-2px); }
.menu-toggle { display: none; }

.hero {
  position: relative;
  min-height: 1085px;
  padding: 230px 0 110px;
  background: var(--page-bg);
  isolation: isolate;
}
.hero-grid { display: grid; grid-template-columns: .86fr 1.14fr; align-items: center; gap: 16px; }
.hero-copy { position: relative; z-index: 2; padding-left: 34px; }
.eyebrow { margin: 0 0 18px; color: var(--pink); font-size: 24px; letter-spacing: .08em; }
.hero h1 {
  margin: 0;
  font-family: "Smiley Sans", "PingFang SC", sans-serif;
  font-size: clamp(74px, 6.2vw, 124px);
  font-weight: 400;
  font-synthesis: none;
  line-height: 1.03;
  letter-spacing: .055em;
}
.hero-lead { margin: 40px 0 36px; font-size: 23px; font-style: italic; letter-spacing: .04em; }
.download-row { display: flex; flex-wrap: wrap; gap: 18px; }
.download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 164px;
  min-height: 60px;
  padding: 13px 19px;
  color: #fff;
  background: linear-gradient(135deg, #ff7890, #ff6480);
  border: 0;
  border-radius: 999px;
  box-shadow: 0 13px 28px rgba(255, 92, 123, .25);
  font-weight: 800;
  font-size: 16px;
  cursor: pointer;
  transition: transform .22s ease, box-shadow .22s ease, filter .22s ease;
}
.download-button:hover, .download-button:focus-visible { transform: translateY(-4px); box-shadow: 0 18px 36px rgba(255,92,123,.36); filter: saturate(1.1); }
.platform-icon {
  display: block;
  flex: none;
  margin-right: 8px;
  filter: brightness(0) invert(1);
}
.platform-icon--android { width: 22px; height: 26px; filter: none; }
.platform-icon--apple { width: 20px; height: 27px; transform: translateY(-1px); }
.platform-icon--windows { width: 23px; height: 22px; }
.hero-art { position: relative; margin: 0; transform: translateY(5px); }
.hero-art img { width: 100%; }
.scroll-hint { position: absolute; bottom: 48px; left: 50%; width: 28px; height: 45px; border: 2px solid #dfd9df; border-radius: 999px; }
.scroll-hint span { position: absolute; top: 9px; left: 50%; width: 4px; height: 8px; margin-left: -2px; background: var(--pink); border-radius: 3px; animation: scroll-dot 1.7s ease-in-out infinite; }

.features { padding-top: 130px; }
.feature {
  min-height: 1030px;
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  align-items: center;
  gap: clamp(40px, 7vw, 130px);
  padding-block: 120px;
}
.feature--reverse { grid-template-columns: 1.1fr .9fr; }
.feature--reverse .feature-copy { order: 2; }
.feature--reverse .feature-art { order: 1; }
.feature-copy { padding-left: 34px; }
.section-kicker { margin: 0 0 12px; color: var(--pink); font-size: 14px; font-weight: 800; letter-spacing: .18em; }
.feature h2 {
  margin: 0 0 42px;
  font-family: "Smiley Sans", "PingFang SC", sans-serif;
  font-size: clamp(42px, 3.3vw, 66px);
  font-weight: 400;
  font-synthesis: none;
  line-height: 1.2;
  letter-spacing: .045em;
}
.feature h2 em {
  font-family: inherit;
  font-size: .8em;
  font-style: normal;
  font-weight: inherit;
}
.feature-list { display: grid; gap: 17px; margin: 0; padding: 0; color: var(--muted); font-size: clamp(17px, 1.25vw, 23px); list-style: none; }
.feature-list li { position: relative; padding-left: 19px; }
.feature-list li::before { content: ""; position: absolute; top: .68em; left: 0; width: 6px; height: 6px; background: var(--pink); border-radius: 50%; box-shadow: 0 0 0 5px rgba(255,111,134,.1); }
.feature-list strong { color: #ff8da0; font-weight: 500; }
.feature-art { position: relative; margin: 0; }
.feature-art::after { content: ""; position: absolute; z-index: -1; inset: 14% 8%; background: radial-gradient(circle, rgba(230,239,255,.95), rgba(255,240,244,.55) 48%, transparent 70%); filter: blur(35px); }
.feature-art img { width: 100%; mix-blend-mode: multiply; }
.feature-art--player img { mix-blend-mode: normal; }

.contact { position: relative; padding: 180px 0 250px; overflow: hidden; }
.contact-glow { position: absolute; inset: 35% 10% auto; height: 520px; background: radial-gradient(ellipse, rgba(255,230,238,.62), rgba(232,240,255,.36) 44%, transparent 72%); filter: blur(40px); }
.contact-heading { position: relative; text-align: center; }
.contact-heading p { margin: 0; color: var(--pink); font-family: Georgia, serif; font-size: 32px; letter-spacing: .09em; }
.contact-heading h2 {
  margin: 4px 0 64px;
  font-family: "Smiley Sans", "PingFang SC", sans-serif;
  font-size: 60px;
  font-weight: 400;
  font-synthesis: none;
  line-height: 1.2;
  letter-spacing: .18em;
}
.contact-grid { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 56px; width: min(100%, 1390px); margin: 0 auto; }
.contact-card {
  display: flex;
  min-height: 400px;
  padding: 50px 28px 40px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,.9);
  border: 1px solid rgba(236,231,236,.92);
  border-radius: 64px;
  box-shadow: 0 24px 20px rgba(67,57,75,.14), inset 0 0 40px rgba(246,240,246,.45);
  text-align: center;
  transition: transform .3s ease, box-shadow .3s ease;
}
.contact-card:hover, .contact-card:focus-visible { transform: translateY(-10px); box-shadow: 0 35px 40px rgba(67,57,75,.16), inset 0 0 40px rgba(246,240,246,.4); }
.contact-icon { position: relative; display: grid; width: 98px; height: 98px; place-items: center; margin-bottom: 22px; border-radius: 23px; }
.contact-icon-glyph {
  display: block;
  width: 58px;
  height: 54px;
  object-fit: contain;
}
.contact-icon--qq { color: #ff697d; background: #fff0f2; }
.contact-icon--phone { color: #3f8fff; background: #eaf3ff; }
.contact-icon--mail { color: #8a51e7; background: #f3ebff; }
.contact-icon--mail .contact-icon-glyph {
  width: 60px;
  height: 52px;
}
.contact-icon--mail .contact-icon-detail {
  position: absolute;
  display: block;
  width: 60px;
  height: 52px;
  object-fit: contain;
  opacity: .5;
}
.contact-card h3 { margin: 0; font-size: 30px; }
.contact-card p { margin: 0 0 26px; color: #aaa5ad; font-size: 15px; }
.contact-card strong { color: var(--pink); font-size: 26px; letter-spacing: .08em; }
.contact-card:nth-child(2) strong { color: var(--blue); }
.contact-card:nth-child(3) strong { color: var(--purple); font-size: 20px; }

.site-footer { padding: 60px 0; border-top: 1px solid var(--line); background: #fffafb; }
.footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 40px; color: #88838a; }
.footer-inner > p:last-child { justify-self: end; }
.brand--footer .brand-logo { width: 44px; height: 44px; }

.toast {
  position: fixed;
  z-index: 100;
  right: 24px;
  bottom: max(24px, env(safe-area-inset-bottom));
  padding: 14px 22px;
  color: #fff;
  background: rgba(24,22,26,.92);
  border-radius: 14px;
  box-shadow: 0 14px 40px rgba(0,0,0,.18);
  opacity: 0;
  transform: translateY(20px);
  pointer-events: none;
  transition: .3s ease;
}
.toast.is-visible { opacity: 1; transform: translateY(0); }

.reveal { opacity: 0; transform: translateY(38px); transition: opacity .75s cubic-bezier(.2,.7,.2,1), transform .75s cubic-bezier(.2,.7,.2,1); }
.reveal--right { transform: translateX(45px); }
.reveal--delay { transition-delay: .12s; }
.reveal--delay-2 { transition-delay: .24s; }
.reveal.is-visible { opacity: 1; transform: none; }

@keyframes splash-breathe { to { transform: rotate(2deg) scale(1.08); box-shadow: 0 15px 34px rgba(255,91,120,.34); } }
@keyframes scroll-dot { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(18px); } }

@media (max-width: 1100px) {
  .container { width: min(calc(100% - 48px), var(--container)); }
  .site-header { height: 108px; }
  .brand-logo { width: 46px; height: 46px; }
  .brand-name { font-size: 19px; }
  .site-nav { gap: 26px; font-size: 16px; }
  .hero { min-height: 780px; padding-top: 165px; }
  .hero h1 { font-size: clamp(62px, 8vw, 90px); }
  .hero-lead { font-size: 18px; }
  .download-row { gap: 10px; }
  .download-button { min-width: 138px; min-height: 54px; padding-inline: 14px; font-size: 14px; }
  .feature { min-height: 720px; padding-block: 70px; gap: 40px; }
  .feature-copy { padding-left: 0; }
  .feature-list { font-size: 16px; }
  .contact { padding: 130px 0 180px; }
  .contact-grid { gap: 28px; }
  .contact-card { min-height: 340px; border-radius: 48px; }
  .contact-card strong { font-size: 20px; }
  .contact-card:nth-child(3) strong { font-size: 16px; }
  .footer-inner { grid-template-columns: 1fr; justify-items: center; text-align: center; }
  .footer-inner > p:last-child { justify-self: center; }
}

@media (max-width: 760px) {
  .container { width: min(calc(100% - 36px), var(--container)); }
  .site-header { position: fixed; height: 78px; background: rgba(255,255,255,.82); border-bottom: 1px solid rgba(239,234,239,.8); backdrop-filter: blur(18px); }
  .brand { gap: 10px; }
  .brand-logo { width: 40px; height: 40px; }
  .brand-name { font-size: 17px; }
  .menu-toggle { position: relative; z-index: 22; display: grid; width: 44px; height: 44px; padding: 10px; border: 0; background: transparent; place-content: center; gap: 5px; }
  .menu-toggle span { display: block; width: 23px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform .25s ease, opacity .25s 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); }
  .site-nav { position: fixed; inset: 0; display: flex; padding: 110px 28px 42px; flex-direction: column; align-items: stretch; gap: 8px; background: rgba(255,255,255,.97); visibility: hidden; opacity: 0; transform: translateY(-14px); transition: .25s ease; }
  .site-nav.is-open { visibility: visible; opacity: 1; transform: none; }
  .site-nav a { padding: 15px 10px !important; text-align: center; font-size: 22px; }
  .site-nav a:not(.nav-download)::after { display: none; }
  .nav-download { margin-top: 18px; }

  .hero { min-height: auto; padding: 128px 0 70px; }
  .hero-grid { grid-template-columns: 1fr; gap: 12px; }
  .hero-copy { padding-left: 0; text-align: center; }
  .eyebrow { margin-bottom: 10px; font-size: 16px; }
  .hero h1 { font-size: clamp(48px, 15vw, 68px); letter-spacing: .03em; }
  .hero-lead { max-width: 330px; margin: 24px auto 22px; font-size: 14px; }
  .download-row {
    display: grid;
    width: min(100%, 350px);
    margin-inline: auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }
  .download-button { width: 100%; min-width: 0; min-height: 50px; padding-inline: 10px; font-size: 14px; }
  .download-button:last-child { width: calc(50% - 5px); grid-column: 1 / -1; justify-self: center; }
  .hero-art { margin: 10px -10px 0; }
  .scroll-hint { display: none; }

  .features { padding-top: 18px; }
  .feature, .feature--reverse { min-height: 0; grid-template-columns: 1fr; gap: 20px; padding-block: 80px; }
  .feature-copy, .feature--reverse .feature-copy { order: 1; text-align: center; }
  .feature-art, .feature--reverse .feature-art { order: 2; margin-inline: -8px; }
  .section-kicker { font-size: 11px; }
  .feature h2 { margin-bottom: 25px; font-size: 34px; }
  .feature-list { gap: 13px; font-size: 15px; text-align: left; }
  .feature-list li { padding-left: 16px; }

  .contact { padding: 95px 0 110px; }
  .contact-heading p { font-size: 20px; }
  .contact-heading h2 { margin-bottom: 38px; font-size: 40px; letter-spacing: .12em; }
  .contact-grid { grid-template-columns: 1fr; gap: 24px; }
  .contact-card { min-height: 280px; border-radius: 40px; }
  .contact-icon { width: 80px; height: 80px; margin-bottom: 15px; }
  .contact-card h3 { font-size: 25px; }
  .contact-card strong, .contact-card:nth-child(3) strong { font-size: 19px; }

  .site-footer { padding: 48px 0; }
  .footer-inner { gap: 18px; font-size: 13px; }
  .toast { right: 18px; bottom: max(18px, env(safe-area-inset-bottom)); left: 18px; text-align: center; }
  .reveal--right { transform: translateY(38px); }
}

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