:root {
  --paper:#fffdf7; --ink:#451060; --muted:#796585; --purple:#7b36a4;
  --line:#d9c3ee; --lavender:#f2eafa; --content:1160px;
  font-family:"PingFang SC","Microsoft YaHei",sans-serif; color:var(--ink);
  background:var(--paper); font-synthesis:none;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;font-size:17px;line-height:1.8}
a{color:inherit;text-decoration:none}
button{font:inherit}
a,button,summary{-webkit-tap-highlight-color:transparent}
:focus-visible{outline:3px solid #a66ac8;outline-offset:5px}
img,svg{display:block;max-width:100%}
figure,p{margin:0}
.wrap,.header-inner{width:min(var(--content),calc(100% - 88px));margin-inline:auto}
.skip-link{position:fixed;top:-100px;left:20px;z-index:10;background:white;padding:12px}
.skip-link:focus{top:12px}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:100px}
.brand{display:inline-flex;align-items:center;min-height:44px;font-weight:800;font-size:26px;white-space:nowrap}
.brand-en{margin-left:6px;letter-spacing:-1px}
nav{display:flex;gap:28px}
nav a{min-width:44px;min-height:44px;display:inline-flex;align-items:center;justify-content:center;font-weight:600}
nav a:hover{text-decoration:underline;text-underline-offset:10px}
.hero{display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:24px;padding-block:48px 38px;border-bottom:1px solid var(--ink);border-radius:0;min-height:580px}
h1,h2,h3{margin:0;font-weight:800;line-height:1.45}
h1{font-size:clamp(36px,4.3vw,60px);letter-spacing:-1.8px;margin-bottom:28px}
.highlight{position:relative;isolation:isolate;white-space:nowrap}
.highlight:after{content:"";position:absolute;left:-3%;right:0;bottom:2px;height:15px;border-radius:55% 40% 50% 40%;background:#fff09d;z-index:-1;transform:rotate(-1deg)}
.tagline{font-size:22px;font-weight:600;margin-bottom:34px}
.beta-button{min-height:58px;max-width:100%;border:2px solid var(--ink);border-radius:28px;background:linear-gradient(115deg,#a66ac8,#8138a6);color:white;font-weight:700;padding:12px 30px;box-shadow:2px 4px 0 var(--ink);opacity:1;cursor:default}
.beta-button:after{content:"›";margin-left:16px;font-size:24px;line-height:1}
.platform{font-size:14px;color:var(--muted);margin-top:12px}
.hero-copy .platform{width:310px;max-width:100%;text-align:center}
.hero-art{position:relative;isolation:isolate;min-width:0}
.hero-blob{position:absolute;inset:5% 0 4% 4%;background:#eee3fa;border-radius:53% 47% 40% 60%/48% 40% 60% 52%;z-index:-1}
.hero-dog{width:100%;height:auto;transform-origin:center bottom;animation:breathe 3s ease-in-out infinite}
.speech{position:absolute;right:0;top:4%;z-index:2;padding:14px 18px;border:2px solid var(--ink);border-radius:20px 20px 20px 4px;background:#fffefa;font-weight:600;transform:rotate(-3deg)}
.section{margin-top:64px}
h2{font-size:38px;letter-spacing:-.6px}
#daily>h2{text-align:center;margin-bottom:40px}
.pose-grid,.feature-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.pose-card{min-width:0;text-align:center}
.pose{width:100%;height:270px}
.pose-card figcaption{font-weight:700;font-size:21px;margin-top:12px}
.pose-card figcaption:after{content:"";display:block;width:30px;height:2px;background:var(--line);margin:22px auto 0}
.feature-grid{margin-top:8px}
.feature-card{text-align:center;min-width:0}
h3{font-size:22px;margin-bottom:8px}
.feature-card p{font-size:16px}
.feature-card .small{font-size:13px;color:var(--muted);margin-top:3px}
.motion-controls{text-align:right;height:44px;margin-top:4px}
.motion-controls button{background:none;border:0;color:var(--muted);font-size:13px;min-height:44px;min-width:44px;padding:8px 12px;cursor:pointer;text-decoration:underline;text-underline-offset:4px}
.privacy-note{font-size:12px;text-align:center;color:var(--muted);margin-top:18px}
.company{display:grid;grid-template-columns:.8fr 1.4fr;align-items:center;gap:30px;background:linear-gradient(105deg,#f7f0fc,#f0e7f9);border-radius:32px;padding:38px 32px}
.company-copy h2{font-size:34px}
.company-copy h2:after{content:"";display:block;width:34px;height:3px;background:#c7a2e7;margin:22px 0}
.company-copy p{font-size:17px;line-height:1.9}
.proportion-scene{min-width:0}
.laptop-screen{margin-inline:5%;padding:10px 10px 13px;background:#17121d;border-radius:16px 16px 0 0;box-shadow:0 0 0 2px #918699}
.desktop-proportion{width:100%;height:auto;aspect-ratio:1440/900;border-radius:7px;overflow:hidden}
.laptop-base{height:13px;background:linear-gradient(#d1cdd5,#8e8995);border-radius:0 0 50% 50%/0 0 100% 100%}
.proportion-scene figcaption{text-align:center;font-size:11px;line-height:1.6;color:var(--muted);margin-top:12px}
#about{border-top:1px solid var(--ink);border-bottom:1px solid var(--ink);padding-block:46px}
.letter{display:grid;grid-template-columns:.85fr 1.15fr;gap:42px}
.letter h2{font-size:34px}
.creator-name{display:block}
.letter-preview{font-size:16px;line-height:2}
.letter-body{min-width:0}
.letter-body details{margin-top:14px}
summary{cursor:pointer;list-style:none;min-height:44px}
summary::-webkit-details-marker{display:none}
.letter-body summary{display:flex;align-items:center;gap:8px;width:fit-content;font-size:15px;text-decoration:underline;text-underline-offset:7px}
.read-less,details[open] .read-more{display:none}
details[open] .read-less{display:inline}
details[open] .chevron{transform:rotate(180deg)}
.full-letter{border-top:1px solid var(--line);padding-top:16px;font-size:15px;line-height:2;color:var(--muted)}
.full-letter p+p{margin-top:16px}
.faq{display:grid;grid-template-columns:.85fr 1.15fr;gap:42px}
.faq>div>p{margin-top:10px;font-size:20px}
.faq-list details{border-bottom:1px solid var(--line);padding-block:10px}
.faq-list details:first-child{padding-top:0}
.faq-list summary{font-weight:600;font-size:19px;display:flex;align-items:center;justify-content:space-between;gap:20px;padding:8px 4px}
.faq-list summary:after{content:"+";font-size:25px;font-weight:400;flex:none}
.faq-list details[open] summary:after{content:"−"}
.faq-list p{padding:6px 4px 15px;font-size:16px;color:#77588c;line-height:1.9}
.download{display:grid;grid-template-columns:1.2fr 1fr;align-items:center;gap:32px;border:2px solid var(--ink);border-radius:24px;box-shadow:7px 7px 0 #e8d7f7;padding:38px;background:#fffefa;margin-bottom:44px}
.download h2{font-size:32px;margin-bottom:22px}
.download .platform{font-size:13px}
.install-steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));list-style:none;padding:20px 0 20px 30px;margin:0;border-left:1px dashed var(--line);gap:22px;counter-reset:step}
.install-steps li{counter-increment:step;text-align:center;position:relative;font-size:15px}
.install-steps li:before{content:counter(step);display:grid;place-items:center;border:2px solid var(--ink);border-radius:50%;width:38px;height:38px;margin:0 auto 14px;font-weight:700;font-size:21px;line-height:1}
.install-steps li+li:after{content:"→";position:absolute;left:-18px;top:2px;font-size:22px}
footer{border-top:1px solid var(--ink);text-align:center;padding:24px 0}
footer .brand{font-size:19px}
@keyframes breathe{0%,100%{transform:scaleY(1)}50%{transform:scaleY(1.012)}}
.motion-paused .hero-dog{animation-play-state:paused}
@media(max-width:1000px){
.wrap,.header-inner{width:calc(100% - 48px)}
h1{font-size:clamp(32px,4.3vw,44px)}
.tagline{font-size:18px}
.hero{min-height:490px}
.speech{font-size:13px;padding:10px 12px}
.pose{height:220px}
.company{padding:28px 24px;gap:20px}
.company-copy h2,.letter h2{font-size:28px}
.company-copy p{font-size:15px}
.download{grid-template-columns:1fr 1fr;padding:28px;gap:20px}
.download h2{font-size:26px}
.install-steps{gap:16px;padding-left:20px}
}
@media(max-width:640px){
.wrap,.header-inner{width:calc(100% - 36px)}
.header-inner{min-height:76px;gap:8px}
.brand{font-size:20px}
nav{gap:4px}nav a{font-size:14px}
.hero{grid-template-columns:1fr;gap:24px;text-align:center;padding:30px 0;min-height:0}
h1{font-size:clamp(29px,8.2vw,45px);letter-spacing:-1px;margin-bottom:20px}
.highlight:after{height:10px}
.tagline{font-size:16px;margin-bottom:24px}
.beta-button{font-size:16px;padding:12px 22px;min-height:54px}
.hero-copy .platform{margin-inline:auto;width:auto}
.hero-art{width:min(100%,390px);margin:auto}
.speech{right:0;top:2%}
.hero-dog{max-height:340px;object-fit:contain}
.section{margin-top:42px}
h2{font-size:27px}
#daily>h2{margin-bottom:26px}
.pose-grid,.feature-grid{gap:12px}
.pose{height:clamp(105px,30vw,170px)}
.pose-card figcaption{font-size:16px;margin-top:8px}
.pose-card figcaption:after{margin-top:15px;width:24px}
.feature-grid{grid-template-columns:1fr;gap:20px;margin-top:8px}
.feature-card h3{font-size:20px}
.feature-card p{font-size:15px}
.motion-controls{margin-top:0}
.privacy-note{font-size:12px;line-height:1.7}
.company{grid-template-columns:1fr;padding:26px 18px;gap:24px;border-radius:22px}
.company-copy{text-align:center}
.company-copy h2{font-size:28px}
.company-copy h2:after{margin:15px auto}
.company-copy p{font-size:15px}
.laptop-screen{padding:6px 6px 8px;border-radius:10px 10px 0 0}
.laptop-base{height:8px}
.proportion-scene figcaption{font-size:10px}
#about{padding-block:28px}
.letter,.faq{grid-template-columns:1fr;gap:24px}
.letter h2{font-size:26px}
.creator-name{display:inline-block;margin-left:4px}
.letter-preview{font-size:15px}
.letter-preview br{display:none}
.faq>div>p{font-size:16px;margin-top:6px}
.faq-list summary{font-size:17px;min-height:52px}
.faq-list p{font-size:15px}
.download{grid-template-columns:1fr;padding:26px 20px;gap:24px;text-align:center;border-radius:20px;margin-bottom:36px}
.download h2{font-size:24px}
.install-steps{border-left:0;border-top:1px dashed var(--line);padding:24px 0 0;gap:16px}
.install-steps li{font-size:13px}
.install-steps li:before{width:34px;height:34px;font-size:18px}
.install-steps li+li:after{left:-14px;font-size:19px}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.hero-dog{animation:none}}

/* Public download links retain the approved button style. */
a.beta-button{display:inline-flex;align-items:center;justify-content:center;cursor:pointer}
a.beta-button:hover{background:#713095}
.download-note{font-size:12px;color:var(--muted);margin-top:12px;line-height:1.8}
.text-link{text-decoration:underline;text-underline-offset:4px;display:inline-block;padding-block:8px;min-height:44px}