:root { color-scheme: light; --paper: #f5f3eb; --ink: #292a26; --muted: #67685f; --line: #d7d7cc; --purple: #dfdbf3; --green: #d6ebad; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: Arial, Helvetica, sans-serif; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 3px solid #6554a7; outline-offset: 6px; }
a:hover { text-decoration: underline; text-underline-offset: 5px; }
.wrap { width: min(1180px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; top: -80px; left: 16px; padding: 10px 20px; background: var(--ink); color: white; z-index: 10; }
.skip-link:focus { top: 12px; }
.site-header { display: flex; justify-content: space-between; align-items: center; min-height: 112px; border-bottom: 1px solid var(--line); gap: 24px; }
.brand, .footer-brand { display: inline-flex; flex-shrink: 0; }
.brand-logo { display: block; width: 100px; height: auto; }
nav { display: flex; gap: 30px; font-size: 13px; }
.hero { display: grid; grid-template-columns: 1.2fr 1fr; align-items: center; gap: 60px; padding-block: 100px 108px; }
.eyebrow { font-size: 11px; font-weight: 600; letter-spacing: 2px; margin: 0 0 30px; }
.status-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; background: #5d7641; margin-right: 7px; }
h1 { font-size: clamp(48px, 5.5vw, 76px); letter-spacing: -4px; line-height: 1.08; font-weight: 500; margin: 0 0 28px; }
em { font-family: Georgia, 'Times New Roman', serif; font-weight: 400; }
.hero-description { color: var(--muted); font-size: 17px; line-height: 1.8; }
.chinese { font-size: 13px; color: var(--muted); margin-top: 16px; }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 36px; background: var(--ink); color: var(--paper); padding: 15px 23px; margin-top: 26px; font-size: 13px; }
.button:hover { background: #45463f; text-decoration: none; }
.hero-art { position: relative; padding: 40px 30px; background: var(--purple); border: 1px solid #cbc6e0; }
.art-label, .art-note { display: block; font-size: 9px; letter-spacing: 1.7px; }
.art-label { margin-bottom: 30px; }
.puzzle-frame { margin: 0 6px 30px; border: 2px solid var(--ink); transform: rotate(-6deg); box-shadow: 9px 10px 0 #b9b3d3; }
.puzzle { display: block; width: 100%; height: auto; }
.art-note { text-align: right; }
.floating-number { position: absolute; bottom: 50px; right: -20px; width: 64px; height: 72px; background: var(--green); border: 1px solid var(--ink); display: grid; place-items: center; font: italic 48px Georgia, serif; transform: rotate(9deg); }
.game-section { background: var(--green); border-block: 1px solid #becb9f; padding-block: 70px; }
.game-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
h2 { font-size: clamp(42px, 5vw, 64px); font-weight: 500; line-height: 1.1; letter-spacing: -2.5px; margin: 0; }
.game-layout h2 { font-size: clamp(70px, 8vw, 112px); letter-spacing: -6px; margin-top: 46px; }
.title-dot { color: #667f46; }
.game-subtitle { font-size: 13px; margin-top: 24px; }
.tag { display: inline-block; font-size: 10px; letter-spacing: 1.4px; border: 1px solid #8d9f72; padding: 4px 10px; }
h3 { font-weight: 500; font-size: 30px; line-height: 1.25; letter-spacing: -1px; margin-block: 25px 18px; }
.game-copy p { max-width: 440px; font-size: 14px; }
.text-link { display: inline-flex; gap: 35px; border-bottom: 1px solid var(--ink); padding-block: 12px 6px; font-size: 13px; }
.game-facts { display: flex; flex-wrap: wrap; gap: 8px; max-width: 390px; margin-top: 28px; }
.game-facts span { border: 1px solid #8d9f72; padding: 5px 10px; font-size: 11px; }
.modes-section, .experience-section, .faq-section { padding-block: 80px; border-bottom: 1px solid var(--line); }
.section-heading { display: grid; grid-template-columns: 1.3fr 1fr; gap: 70px; align-items: end; margin-bottom: 42px; }
.section-heading .eyebrow { margin-bottom: 22px; }
.section-heading h2 { font-size: clamp(38px, 4.5vw, 56px); }
.section-heading > p { max-width: 380px; margin: 0; }
.mode-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border: 1px solid var(--line); }
.mode-card { padding: 30px; }
.mode-card + .mode-card { border-left: 1px solid var(--line); }
.mode-card:nth-child(2) { background: var(--purple); }
.mode-number { font-size: 10px; letter-spacing: 1.5px; }
.mode-card h3 { font-size: 26px; }
.mode-card p, .play-steps p, .experience-grid p, .faq-list p { font-size: 14px; }
.mode-card .mode-note { margin-top: 24px; font-size: 12px; color: #54554d; }
.play-section { padding-block: 80px; background: var(--purple); border-block: 1px solid #cbc6e0; }
.play-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; padding: 0; margin: 0; list-style: none; counter-reset: steps; }
.play-steps li { counter-increment: steps; border-top: 1px solid #aaa3c4; padding-top: 22px; }
.play-steps li::before { content: "0" counter(steps); font: italic 36px Georgia, serif; }
.play-steps h3, .experience-grid h3 { font-size: 24px; margin-top: 18px; }
.experience-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.experience-grid article { border-top: 1px solid var(--line); padding-top: 10px; }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); padding: 20px 0; }
.faq-list summary { cursor: pointer; font-size: 17px; font-weight: 500; }
.faq-list p { max-width: 850px; color: var(--muted); margin-bottom: 0; }
.faq-list a { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.studio-section { padding-block: 85px; border-bottom: 1px solid var(--line); }
.studio-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; align-items: center; }
.studio-statement { font-size: 23px; line-height: 1.55; margin-top: 0; }
.muted { color: var(--muted); font-size: 14px; }
.contact-section { padding-block: 70px; display: flex; justify-content: space-between; align-items: center; gap: 36px; }
.contact-section .eyebrow { margin-bottom: 20px; }
.contact-section h2 { font-size: 48px; }
.contact-section p:last-child { font-size: 14px; color: var(--muted); }
.contact-email { font-size: clamp(18px, 2.5vw, 30px); letter-spacing: -0.5px; border-bottom: 1px solid var(--ink); padding-bottom: 6px; overflow-wrap: anywhere; }
.contact-email span { margin-left: 18px; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; border-top: 1px solid var(--line); padding-block: 25px; font-size: 12px; color: var(--muted); }
.footer-brand .brand-logo { width: 80px; }
.policy { max-width: 800px; margin-inline: auto; padding-block: 65px 90px; }
.policy h1 { font-size: clamp(40px, 6vw, 64px); letter-spacing: -2px; }
.policy-intro { border-bottom: 1px solid var(--line); padding-bottom: 25px; margin-bottom: 35px; }
.policy h2 { font: 600 23px/1.4 Arial, Helvetica, sans-serif; letter-spacing: -0.5px; margin-block: 40px 15px; }
.policy p, .policy li { font-size: 15px; }
.policy ol { padding-left: 24px; }
.policy li { padding-left: 6px; margin-block: 8px; }
.policy a { text-decoration: underline; text-underline-offset: 3px; }
.table-scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 14px; text-align: left; border: 1px solid var(--line); }
th { background: var(--purple); }
@media (min-width: 1600px) { .hero { padding-block: 125px; } }
@media (max-width: 900px) {
  .wrap { width: calc(100% - 48px); }
  .hero { gap: 32px; padding-block: 70px; }
  h1 { letter-spacing: -2px; }
  .hero-art { padding: 26px 18px; }
  .art-label { font-size: 8px; letter-spacing: 0.7px; }
  .game-layout, .studio-layout { gap: 40px; }
  .section-heading { gap: 40px; }
  .mode-card { padding: 22px; }
  .experience-grid { gap: 40px; }
}
@media (max-width: 640px) {
  .site-header { min-height: 90px; flex-wrap: wrap; padding-block: 20px; gap: 15px; }
  .brand-logo { width: 80px; }
  nav { flex-wrap: wrap; gap: 12px 20px; font-size: 12px; }
  .hero { grid-template-columns: 1fr; gap: 52px; padding-block: 52px 60px; }
  h1 { font-size: clamp(43px, 10vw, 64px); }
  .hero-description { font-size: 15px; }
  .hero-art { width: min(100%, 380px); justify-self: center; padding: 30px 26px; }
  .floating-number { right: -12px; }
  .game-layout, .studio-layout { grid-template-columns: 1fr; gap: 30px; }
  .game-section { padding-block: 48px; }
  .game-layout h2 { margin-top: 20px; }
  .game-copy { border-top: 1px solid #aabf8a; padding-top: 28px; }
  .modes-section, .experience-section, .faq-section, .play-section { padding-block: 50px; }
  .section-heading { grid-template-columns: 1fr; gap: 22px; margin-bottom: 30px; }
  .mode-grid, .play-steps, .experience-grid { grid-template-columns: 1fr; gap: 0; }
  .mode-card { padding: 28px; }
  .mode-card + .mode-card { border-left: 0; border-top: 1px solid var(--line); }
  .play-steps { gap: 24px; }
  .experience-grid { gap: 24px; }
  .faq-list summary { font-size: 16px; }
  .studio-section { padding-block: 55px; }
  .studio-statement { font-size: 20px; }
  .contact-section { display: block; padding-block: 50px; }
  .contact-email { display: inline-block; margin-top: 15px; font-size: 23px; }
  .site-footer { flex-wrap: wrap; font-size: 11px; }
  .site-footer > span { display: none; }
  .policy { padding-block: 40px 60px; }
  .policy h2 { font-size: 21px; }
  th, td { padding: 10px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }