:root{color-scheme:light;--paper:#f4f2ed;--ink:#293630;--muted:#657069;--line:#d8ddd4;--accent:#365b4f;--surface:#fffefa;font-family:"Noto Sans SC","Microsoft YaHei",system-ui,sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--paper);color:var(--ink);line-height:1.85}a{color:inherit;text-decoration:none}a:focus-visible{outline:2px solid var(--accent);outline-offset:5px}a:hover{text-decoration:underline;text-underline-offset:6px}img{max-width:100%;display:block}figure{margin:0}button,a{-webkit-tap-highlight-color:transparent}h1,h2,h3,p{margin:0}h1,h2,h3{font-weight:500;letter-spacing:-.045em;line-height:1.35}p+p{margin-top:18px}.site-header,main,footer{max-width:1160px;margin:auto;padding-left:40px;padding-right:40px}.site-header{height:100px;display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--line)}.brand{display:flex;gap:10px;align-items:center;font-size:25px;letter-spacing:.04em;font-weight:600}.brand img{object-fit:contain}.site-header nav{display:flex;gap:32px;font-size:14px}.opening{display:grid;grid-template-columns:1.2fr .8fr;gap:90px;align-items:center;padding:76px 0 88px}.eyebrow{font-size:12px;letter-spacing:.18em;color:var(--muted);margin-bottom:26px}h1{font-size:clamp(38px,4.5vw,62px)}.lead{font-size:18px;color:var(--muted);margin-top:28px}.text-link{display:inline-flex;gap:35px;color:var(--accent);border-bottom:1px solid var(--accent);padding:12px 0 5px;margin-top:30px;min-height:44px}.small{font-size:12px;color:var(--muted)}.beta-note{margin-top:25px}.opening-screen{max-width:270px;justify-self:center}.opening-screen img,.screen-strip img{border:1px solid var(--line);border-radius:20px;box-shadow:0 16px 38px #2936300b;background:var(--surface)}figcaption{font-size:12px;color:var(--muted);text-align:center;margin-top:16px}.story-section{display:grid;grid-template-columns:1fr 1fr;gap:110px;border-top:1px solid var(--line);padding:86px 0}.section-heading h2,.world-section h2,.beta-section h2,.contact-section h2{font-size:clamp(28px,3vw,39px)}.section-heading>p:last-child{margin-top:20px;font-size:14px;color:var(--muted)}.story-copy article{position:relative;padding:0 0 30px 45px;margin-bottom:26px;border-bottom:1px solid var(--line)}.story-copy article:last-child{border:0;margin-bottom:0;padding-bottom:0}.ordinal{position:absolute;left:0;top:0;color:var(--accent);font-size:12px;letter-spacing:.08em}.story-copy h3{font-size:22px}.story-copy p{margin-top:15px;color:var(--muted);font-size:15px}.screens-section{padding:20px 0 90px}.screen-strip{display:grid;grid-template-columns:repeat(3,1fr);gap:65px;margin:44px auto 0;max-width:840px}.world-section{padding:64px 0 70px;text-align:center;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.world-section>p:not(.eyebrow){max-width:590px;color:var(--muted);margin:25px auto 0}.world-names{display:flex;justify-content:center;flex-wrap:wrap;gap:35px;margin-top:40px;font-size:14px;letter-spacing:.12em}.world-names span{padding-bottom:10px;border-bottom:1px solid var(--accent)}.beta-section{display:grid;grid-template-columns:1fr 1fr;gap:110px;padding:86px 0;color:var(--muted)}.beta-section h2{color:var(--ink)}.contact-section{padding:50px 0 80px;border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr;gap:110px}.contact-section a{font-size:24px;letter-spacing:.04em}footer{padding-top:28px;padding-bottom:35px;border-top:1px solid var(--line);font-size:12px;color:var(--muted);display:flex;flex-direction:column;gap:12px}footer>div{display:flex;gap:25px;flex-wrap:wrap}.legal{max-width:780px;padding-top:50px;padding-bottom:80px}.legal h1{font-size:38px;margin-bottom:16px}.legal h2{font-size:22px;margin:38px 0 14px}.legal p,.legal li{font-size:15px}.legal ul{padding-left:20px}.legal a{color:var(--accent);text-decoration:underline;overflow-wrap:anywhere}.legal .document-status{font-size:13px;color:var(--muted);border-bottom:1px solid var(--line);padding-bottom:30px}
@media(max-width:760px){.site-header,main,footer{padding-left:24px;padding-right:24px}.site-header{height:78px}.site-header nav{gap:18px;font-size:12px}.site-header nav a:first-child{display:none}.opening{grid-template-columns:1fr;gap:45px;padding:48px 0 60px}.opening-screen{max-width:235px}.eyebrow{margin-bottom:20px}.lead{font-size:16px}.story-section,.beta-section,.contact-section{grid-template-columns:1fr;gap:35px;padding:55px 0}.screen-strip{gap:18px;grid-template-columns:repeat(2,minmax(0,1fr));margin-top:32px}.screen-strip figure:last-child{grid-column:1/-1;width:calc(50% - 9px);justify-self:center}.screen-strip img{border-radius:13px}.screens-section{padding:0 0 55px}.world-section{padding:45px 0}.world-names{gap:22px}.contact-section{padding-bottom:55px}.contact-section a{font-size:22px}.legal{padding-top:36px}footer{gap:18px}footer>div{gap:14px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
/* Keep actual device screenshots proportional when their HTML dimensions reserve space. */
img{height:auto}
.theme-intros{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;margin-top:36px;text-align:left}.theme-intros article{padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}.theme-intros h3{font-size:23px}.theme-intros p{font-size:14px;color:var(--muted);margin-top:12px}.site-header nav{gap:22px}footer a{overflow-wrap:anywhere}
@media(max-width:760px){.theme-intros{grid-template-columns:1fr;gap:16px}.site-header nav{gap:14px}.site-header nav a:nth-child(2){display:none}.opening-copy{min-width:0}.contact-section a{overflow-wrap:anywhere}}
@media print{.site-header nav{display:none}.opening{padding-top:25px}.opening-screen{max-width:180px}.story-section,.beta-section,.contact-section{gap:30px;padding:30px 0}.legal{max-width:none}a{text-decoration:none}footer{break-inside:avoid}}

/* 无正式同版真机素材时不以Host图作为公开产品截图。 */
.opening { grid-template-columns: minmax(0, 780px); justify-content: center; }