:root{color-scheme:light;--paper:#f7f5ef;--ink:#202f49;--muted:#52627a;--gold:#7b621f;--line:#d9dfdf;--white:#fffefa;--night:#17283e;--button:#253e56;--focus:#9c641b;font-family:"Segoe UI",sans-serif;font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:2rem}body{margin:0;background:var(--paper);color:var(--ink);line-height:1.7}a{color:inherit;text-underline-offset:.25em}a:hover{color:var(--gold)}a:focus-visible,summary:focus-visible{outline:3px solid var(--focus);outline-offset:5px;border-radius:3px}::selection{background:#d9c895;color:#17283e}img{max-width:100%;display:block}p{max-width:66ch;margin:0 0 1.3rem}h1,h2,h3{line-height:1.2;margin:0;text-wrap:balance}h1,h2{font-family:Georgia,"Noto Serif CJK SC","Yu Mincho",serif;font-weight:400;letter-spacing:-.025em}h1{font-size:clamp(2.4rem,4.6vw,4.5rem)}h2{font-size:clamp(2rem,3.3vw,3.4rem)}h3{font-size:1.18rem;font-weight:600}h1 span,h2 span{display:block}.wrap{width:min(1192px,calc(100% - 64px));margin:auto}.skip{position:absolute;left:20px;top:-80px;padding:12px 20px;background:var(--white);z-index:3}.skip:focus{top:14px}.header{display:flex;align-items:center;justify-content:space-between;gap:2rem;padding:26px 0}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;white-space:nowrap}.brand img{width:44px;height:44px;border-radius:10px}.brand strong{display:block;font-size:1.13rem}.brand small{display:block;font-size:.72rem;color:var(--muted);line-height:1.3}.links,.languages{display:flex;align-items:center;gap:24px}.links a{text-decoration:none;font-size:.92rem}.languages{gap:12px}.languages a{font-size:.8rem;text-decoration:none;color:var(--muted)}.languages a[aria-current=page]{color:var(--ink);text-decoration:underline;font-weight:600}.hero{display:grid;grid-template-columns:1fr 1.06fr;gap:54px;align-items:center;padding:70px 0 90px}.hero p{font-size:1.08rem;color:var(--muted);margin-top:26px;max-width:34ch}.hero figure{margin:0;position:relative}.hero figure img{width:100%;height:auto;aspect-ratio:16/10;object-fit:cover;border-radius:16px;box-shadow:0 18px 38px #17283e18}.actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin-top:32px}.button{display:inline-flex;align-items:center;justify-content:center;padding:13px 24px;min-height:48px;border-radius:8px;background:var(--button);color:white;text-decoration:none;font-weight:600;transition:background .2s ease-out}.button:hover{background:#17283e;color:white}.button.pending{background:#e6e9e8;color:var(--muted);font-weight:400}.text-link{font-size:.92rem}.hero .device{font-size:.81rem;margin-top:20px;color:var(--muted)}.feature{display:grid;grid-template-columns:.95fr 1.05fr;gap:100px;padding:84px 0;border-top:1px solid var(--line)}.feature .lead{margin-top:26px;color:var(--muted);font-size:1.05rem}.details{display:grid;grid-template-columns:1fr 1fr;gap:30px 34px;padding-top:4px}.details article{padding:0}.details p{color:var(--muted);font-size:1rem;margin-top:9px;margin-bottom:0}.reading{background:var(--white)}.reading .feature{border:0}.reading .details{grid-template-columns:1fr;gap:27px}.reading .details article+article{border-top:1px solid var(--line);padding-top:24px}.private{background:var(--night);color:#f7f4e8;padding:82px 0}.private-inner{display:grid;grid-template-columns:1fr 1fr;gap:95px}.private h2{color:#f7f4e8}.private p{color:#ccd5e0}.private .note{font-size:.88rem;color:#d8c895;margin-top:20px}.private a{color:#f7f4e8}.download{text-align:center;padding:96px 0 80px}.download p{margin:26px auto 0;color:var(--muted);max-width:52ch}.download .button{margin-top:28px}.download .future{margin-top:28px;font-size:.88rem}.footer{border-top:1px solid var(--line);padding:30px 0 38px;display:flex;justify-content:space-between;gap:24px;align-items:center;font-size:.82rem;color:var(--muted)}.footer nav{display:flex;gap:24px;flex-wrap:wrap}.policy{max-width:790px;margin:68px auto 90px}.policy h1{font-size:clamp(2.5rem,4.3vw,4rem)}.policy .intro{font-size:1.08rem;color:var(--muted);margin:24px 0 50px}.policy .body h1{font-family:inherit;font-size:1.3rem;font-weight:600;letter-spacing:0;margin:0 0 14px}.policy .body h2{font-family:inherit;font-size:1.35rem;font-weight:600;letter-spacing:0;line-height:1.45;margin:44px 0 16px}.policy .body p{max-width:72ch;line-height:1.85}.policy .body ul{padding-left:1.35rem;margin:18px 0 28px}.policy li{margin-bottom:12px}.policy .body a{overflow-wrap:anywhere}.policy .date{color:var(--muted);font-size:.9rem}.policy .back{display:inline-block;margin-top:44px}
@media(max-width:1000px){.links{gap:16px}.hero{gap:32px;padding:45px 0 70px}.feature,.private-inner{gap:50px}.header{flex-wrap:wrap;gap:14px}.languages{margin-left:auto}.links{order:3;width:100%;padding-top:10px}.feature{padding:66px 0}}
@media(max-width:680px){.wrap{width:calc(100% - 40px)}.header{padding:20px 0}.brand img{width:38px;height:38px}.brand strong{font-size:1rem}.brand small{font-size:.68rem}.languages{gap:10px}.languages a{font-size:.75rem}.links{justify-content:space-between;gap:8px}.links a{font-size:.84rem}.hero{grid-template-columns:1fr;padding:38px 0 58px;gap:34px}.hero p{max-width:48ch;font-size:1rem;margin-top:22px}.hero figure img{aspect-ratio:16/10}.actions{gap:18px;margin-top:26px}.button{padding:12px 20px}.feature{grid-template-columns:1fr;gap:30px;padding:55px 0}.details{gap:26px 22px}.details h3{font-size:1.08rem}.private{padding:55px 0}.private-inner{grid-template-columns:1fr;gap:28px}.download{padding:62px 0 55px}.footer{align-items:flex-start;flex-direction:column;gap:16px}.policy{margin-top:42px}.policy .intro{margin-bottom:38px}.policy .body p{font-size:.96rem}.policy .body h2{margin-top:36px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}.button{transition:none}}

html[lang="zh-CN"]{font-family:"Microsoft YaHei","PingFang SC","Noto Sans CJK SC",sans-serif}
html[lang="ja-JP"]{font-family:"Yu Gothic","Hiragino Kaku Gothic ProN","Noto Sans CJK JP",sans-serif}
html[lang="zh-CN"] h1,html[lang="zh-CN"] h2{font-family:"Noto Serif CJK SC","Songti SC","SimSun",serif}
html[lang="ja-JP"] h1,html[lang="ja-JP"] h2{font-family:"Yu Mincho","Hiragino Mincho ProN","Noto Serif CJK JP",serif}
@media(max-width:680px){html[lang="ja-JP"] h1{font-size:clamp(1.5rem,8.2vw,2.4rem)}}