@font-face {
  font-family: "PM Rounded ASCII";
  src: url("/fonts/pm-rounded-ascii.woff2") format("woff2");
  font-display: swap;
  font-weight: 700;
  unicode-range: U+0020-007E;
}
@font-face {
  font-family: "PM Rounded";
  src: url("/fonts/pm-rounded-zh.woff2") format("woff2");
  font-display: swap;
  font-weight: 700;
}
@font-face {
  font-family: "PM Rounded CJK";
  src: url("/fonts/pm-rounded-zh.woff2") format("woff2");
  font-display: swap;
  font-weight: 700;
  unicode-range: U+2E80-2FDF, U+3000-303F, U+3400-4DBF, U+4E00-9FFF, U+F900-FAFF, U+FF00-FFEF;
}
@font-face {
  font-family: "Nunito";
  src: url("/fonts/nunito-latin.woff2") format("woff2");
  font-display: swap;
  font-weight: 200 1000;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "Nunito";
  src: url("/fonts/nunito-latin-ext.woff2") format("woff2");
  font-display: swap;
  font-weight: 200 1000;
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* File: styles/main.css */
/* Design tokens (spec 4.2). @font-face rules are prepended by the build. */
:root {
  --sky-deep: #2e3270;
  --sky-low: #3b3f85;
  --hill: #6b6bb0;
  --header-bg: #262a5e;
  --moon: #ffe08a;
  --moon-shadow: #c9a94f;
  --cream: #fff8e8;
  --text: #f2eeff;
  --muted: #d3ccf2;
  --link: #bfe9ff;
  --ink: #3a2e6e;
  --ink-link: #4b4e98;
  --rule: #e4ddf5;
  --card: rgba(255, 255, 255, 0.1);
  --card-line: rgba(255, 255, 255, 0.22);
  --radius: 18px;
  --wrap: 1080px;
  --font-body: "Nunito", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-display: "PM Rounded ASCII", "PM Rounded CJK", "Nunito", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
.lang-zh {
  --font-body: "PingFang SC", "Noto Sans SC", "Microsoft YaHei", "Nunito", system-ui, sans-serif;
  --font-display: "PM Rounded", "PingFang SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
}

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

html { scroll-behavior: smooth; }
/* Link targets on the home page (/#game, /#feifei) stop below the 65px sticky header. */
section[id] { scroll-margin-top: 80px; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, var(--sky-deep) 0%, var(--sky-low) 100%) fixed;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
.lang-zh { font-size: 16px; }
main { flex: 1; position: relative; z-index: 1; }

img { max-width: 100%; height: auto; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--moon); outline-offset: 3px; border-radius: 4px; }

.display {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.01em;
}
.wrap { width: min(100% - 40px, var(--wrap)); margin-inline: auto; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%);
  white-space: nowrap;
}
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 30;
  background: var(--moon); color: var(--ink);
  padding: 8px 14px; border-radius: 99px; font-weight: 700;
}
.skip-link:focus { top: 12px; }

/* Starry sky (decorative). */
.sky {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    radial-gradient(1.5px 1.5px at 20px 30px, rgba(255, 255, 255, 0.9), transparent),
    radial-gradient(1px 1px at 90px 80px, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1.5px 1.5px at 160px 40px, rgba(255, 248, 232, 0.8), transparent),
    radial-gradient(1px 1px at 230px 120px, rgba(255, 255, 255, 0.6), transparent);
  background-size: 260px 160px;
  opacity: 0.5;
  animation: twinkle 7s ease-in-out infinite alternate;
}
@keyframes twinkle { from { opacity: 0.35; } to { opacity: 0.6; } }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(38, 42, 94, 0.9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--card-line);
}
.header-inner { display: flex; align-items: center; gap: 16px; min-height: 64px; }
.brand { display: inline-flex; flex-shrink: 0; }
.brand img { display: block; width: 140px; height: auto; }
.site-nav { display: flex; align-items: center; gap: 22px; margin-left: auto; }
.site-nav a { color: var(--text); text-decoration: none; font-size: 15px; }
.site-nav a:hover { color: var(--moon); }
.site-nav .lang-switch {
  font-family: var(--font-body); font-weight: 700; font-size: 14px;
  padding: 3px 12px; border: 1px solid var(--card-line); border-radius: 99px;
}
.menu-toggle {
  display: none; margin-left: auto;
  width: 44px; height: 44px; border: 0; border-radius: 12px;
  background: var(--card); cursor: pointer;
}
.menu-icon, .menu-icon::before, .menu-icon::after {
  display: block; width: 20px; height: 2px; margin: 0 auto;
  background: var(--cream); border-radius: 2px; position: relative;
}
.menu-icon::before, .menu-icon::after { content: ""; position: absolute; left: 0; }
.menu-icon::before { top: -6px; }
.menu-icon::after { top: 6px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 46px; padding: 10px 22px; border-radius: 99px;
  font-size: 16px; text-decoration: none; line-height: 1.2;
  transition: transform 0.15s ease;
}
.btn-primary { background: var(--moon); color: var(--ink); box-shadow: 0 3px 0 var(--moon-shadow); }
a.btn-primary:hover { transform: translateY(-2px); }
.btn-soon { cursor: default; }
.text-link { color: var(--link); font-size: 16px; }
.cta-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; margin: 1.2em 0 0; }
.play-badge img { display: block; width: 200px; height: auto; }
.email-plain { color: inherit; opacity: 0.85; font-size: 15px; }
.pending-note { font-style: italic; color: var(--muted); }

/* Home: hero */
.hero { padding: 56px 0 40px; }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 40px; align-items: center; }
.hero-title {
  margin: 0 0 8px; font-size: clamp(40px, 6vw, 60px); line-height: 1.05; color: var(--cream);
  text-shadow: 0 3px 0 #2a2460, 0 0 18px rgba(186, 170, 255, 0.45);
}
.hero-subtitle { margin: 0 0 16px; font-size: clamp(18px, 2.4vw, 22px); color: var(--moon); }
.hero-lead { margin: 0; max-width: 34em; color: var(--text); }
.hero-art-wrap { position: relative; display: flex; justify-content: center; }
.moon-glow {
  position: absolute; z-index: 0; width: 190px; height: 190px; border-radius: 50%;
  top: -30px; right: 8%;
  background: radial-gradient(circle at 40% 35%, #fff7d6 0%, #ffe7a3 38%, rgba(255, 231, 163, 0) 70%);
  opacity: 0.6;
}
.hero-art {
  position: relative; z-index: 1; display: block;
  width: 256px; height: 256px; border-radius: 50%; object-fit: cover;
  border: 6px solid #f3eeff;
  box-shadow: 0 0 0 6px rgba(255, 255, 255, 0.18), 0 18px 40px rgba(20, 16, 70, 0.45);
}

/* Home: features */
.features { padding: 32px 0; }
.features h2, .feifei h2, .closing h2 { margin: 0 0 20px; font-size: clamp(26px, 3.4vw, 34px); color: var(--cream); }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature {
  background: var(--card); border: 1px solid var(--card-line); border-radius: var(--radius);
  padding: 20px; text-align: center;
}
.feature-art { display: block; width: 120px; height: 120px; margin: 0 auto 8px; filter: drop-shadow(0 6px 10px rgba(0, 0, 0, 0.25)); }
.feature h3 { margin: 6px 0; font-size: 19px; color: var(--cream); }
.feature p { margin: 0; color: var(--muted); font-size: 15.5px; }

/* Home: Feifei and closing */
.feifei { padding: 40px 0; }
.feifei-inner { display: grid; grid-template-columns: 240px 1fr; gap: 36px; align-items: center; }
.feifei-art { display: block; width: 240px; height: auto; filter: drop-shadow(0 10px 16px rgba(0, 0, 0, 0.3)); }
.feifei-copy p { margin: 0 0 1em; }
.closing { padding: 32px 0 64px; }
.closing-inner {
  text-align: center; padding: 36px 24px;
  background: var(--card); border: 1px solid var(--card-line); border-radius: var(--radius);
}
.closing-inner p { margin: 0; color: var(--muted); }
.closing .cta-row { justify-content: center; }

/* Inner pages */
.page { padding: 40px 0 64px; }
.page-header { margin-bottom: 24px; }
.page-header h1 { margin: 0 0 10px; font-size: clamp(30px, 4.4vw, 42px); line-height: 1.15; color: var(--cream); }
.lead { margin: 0; max-width: 46em; color: var(--text); font-size: 1.06em; }
.version-line { margin: 10px 0 0; color: var(--muted); font-size: 15px; }
.draft-banner {
  margin: 14px 0 0; padding: 10px 16px; border-radius: 12px;
  background: var(--moon); color: var(--ink); font-weight: 700; font-size: 15px;
}
.page-banner {
  display: block; width: min(100% - 40px, 720px); height: auto; margin: 0 auto 24px;
  border-radius: var(--radius); box-shadow: 0 14px 32px rgba(20, 16, 70, 0.4);
}

/* Paper card for long text (spec 4.1) */
.paper {
  background: var(--cream); color: var(--ink);
  border-radius: var(--radius); padding: clamp(22px, 4vw, 44px);
  box-shadow: 0 14px 36px rgba(20, 16, 70, 0.35);
}
.paper a { color: var(--ink-link); }
/* The moon-yellow ring is 1.2:1 on cream; WCAG 1.4.11 needs 3:1, and --ink gives 11:1. */
.paper :focus-visible { outline-color: var(--ink); }
.paper .email-plain { color: var(--ink); }
.paper .pending-note { color: var(--ink); }
.prose { max-width: 820px; margin-inline: auto; }
.prose > :first-child { margin-top: 0; }
.prose h2 { margin: 1.8em 0 0.5em; font-size: 1.3em; line-height: 1.3; }
.prose h3 { margin: 1.4em 0 0.3em; font-size: 1.08em; }
.prose h2, .prose h3 { scroll-margin-top: 84px; }
.prose ul { padding-left: 1.3em; }
.prose li { margin: 0.25em 0; }
.prose hr { border: 0; border-top: 1px solid var(--rule); margin: 2em 0; }
.prose blockquote {
  margin: 1.2em 0; padding: 10px 16px;
  border-left: 4px solid var(--moon-shadow); background: #fff1c9; border-radius: 0 10px 10px 0;
}
.prose blockquote p { margin: 0; }
.page-404 { padding-top: 64px; }

/* Footer */
.site-footer {
  position: relative; z-index: 1; padding: 32px 0 40px;
  background: var(--header-bg); border-top: 1px solid var(--card-line);
  font-size: 14.5px; color: var(--muted);
}
.footer-links { display: flex; flex-wrap: wrap; gap: 10px 22px; margin-bottom: 12px; }
.footer-links a { color: var(--text); }
.legal-line, .trademark { margin: 4px 0 0; }

/* Phones and small tablets */
@media (max-width: 760px) {
  .menu-toggle { display: block; }
  .site-nav {
    display: none; position: absolute; left: 0; right: 0; top: 100%;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--header-bg); border-bottom: 1px solid var(--card-line); padding: 8px 20px 16px;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a { padding: 12px 0; font-size: 17px; border-bottom: 1px solid var(--card-line); }
  .site-nav .lang-switch { align-self: flex-start; margin-top: 12px; border-bottom: 1px solid var(--card-line); padding: 6px 14px; }
  .hero { padding-top: 32px; }
  .hero-inner { grid-template-columns: 1fr; text-align: center; }
  .hero-art-wrap { order: -1; }
  .hero-art { width: 200px; height: 200px; }
  .moon-glow { width: 150px; height: 150px; right: 18%; }
  .hero-lead { margin-inline: auto; }
  .hero .cta-row { justify-content: center; }
  .feature-grid { grid-template-columns: 1fr; }
  .feifei-inner { grid-template-columns: 1fr; text-align: center; }
  .feifei-art { width: 180px; margin: 0 auto; }
  body { font-size: 16px; }
  .lang-zh { font-size: 15px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sky { animation: none; }
  .btn { transition: none; }
  a.btn-primary:hover { transform: none; }
}