:root{color-scheme:light dark;--bg:#f6f7fa;--surface:#fff;--text:#202530;--muted:#5f6878;--line:#dfe4ec;--accent:#3455c5;--tint:#eef2ff}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:24px}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8}a{color:inherit;text-decoration:none}a:focus-visible{outline:3px solid var(--accent);outline-offset:5px}a:hover{text-decoration:underline;text-underline-offset:5px}.wrap{width:min(1120px,calc(100% - 64px));margin-inline:auto}.topbar{min-height:100px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;font-size:18px;font-weight:700}.brand img{border-radius:9px}nav{display:flex;gap:28px;font-size:14px}.hero{display:grid;grid-template-columns:1.4fr 1fr;gap:70px;align-items:center;padding-block:72px 90px}.eyebrow{font-size:14px;font-weight:650;letter-spacing:.09em;color:var(--accent);margin:0 0 18px}h1{font-size:clamp(36px,4.6vw,58px);line-height:1.3;letter-spacing:-.035em;margin:0 0 26px}h1 span{color:var(--accent)}.intro{font-size:18px;max-width:520px;color:var(--muted);margin:0 0 30px}.primary{display:inline-flex;gap:30px;align-items:center;padding:13px 23px;background:var(--accent);color:white;border-radius:12px;font-weight:600}.availability{font-size:14px;color:var(--muted);margin:17px 0 0}.identity{min-height:400px;display:flex;flex-direction:column;justify-content:center;align-items:center;background:var(--tint);border-radius:36px;transform:rotate(2deg);padding:36px 20px}.app-icon{width:200px;height:auto;max-width:80%;border-radius:44px;box-shadow:0 22px 42px #17235324;transform:rotate(-7deg)}.identity-caption{display:flex;flex-direction:column;align-items:center;gap:4px;margin-top:36px;transform:rotate(-2deg)}.identity-caption strong{font-size:20px}.identity-caption span{color:var(--muted);font-size:14px}.features{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding-block:34px;gap:32px}.features article+article{border-left:1px solid var(--line);padding-left:32px}.number{font-size:14px;color:var(--accent);font-weight:600}h2{font-size:25px;line-height:1.5;margin:12px 0}p{margin:0}.features p,.steps p,.privacy p:not(.eyebrow){color:var(--muted)}.how{display:grid;grid-template-columns:1fr 1.7fr;gap:80px;padding-block:88px}.how h2{font-size:36px;line-height:1.4}.steps{list-style:none;counter-reset:step;padding:0;margin:0}.steps li{counter-increment:step;position:relative;padding:0 0 28px 52px}.steps li:last-child{padding-bottom:0}.steps li::before{content:counter(step);position:absolute;left:0;top:3px;width:32px;height:32px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font-size:14px;color:var(--accent);font-weight:600}h3{font-size:19px;margin:0 0 8px}.privacy{padding:38px 42px;background:var(--surface);border:1px solid var(--line);border-radius:20px;display:flex;align-items:center;gap:52px}.privacy>div{flex:1}.privacy h2{font-size:28px}.privacy .secondary{font-size:14px;margin-top:14px}.text-link{color:var(--accent);font-weight:600;white-space:nowrap}footer{display:flex;justify-content:space-between;padding-block:36px;font-size:14px;color:var(--muted)}
@media(max-width:800px){.hero{gap:32px;padding-block:40px 54px}.identity{min-height:320px}.app-icon{width:150px}.identity-caption strong{font-size:17px}.features{gap:20px}.features article+article{padding-left:20px}.features h2{font-size:21px}.how{gap:36px}.privacy{display:block;padding:28px}.text-link{display:inline-block;margin-top:24px}}
@media(max-width:580px){.wrap{width:calc(100% - 40px)}.topbar{min-height:86px;align-items:flex-start;padding-top:22px;flex-wrap:wrap;gap:14px}.brand{font-size:16px}nav{gap:20px}.hero{grid-template-columns:1fr;gap:36px;padding-top:38px}.identity{transform:none;min-height:280px;border-radius:24px}.app-icon{width:148px}.identity-caption{margin-top:24px;transform:none}.features{grid-template-columns:1fr;gap:24px}.features article+article{padding:24px 0 0;border-left:0;border-top:1px solid var(--line)}.how{grid-template-columns:1fr;gap:28px;padding-block:56px}.how h2{font-size:30px}.how h2 br{display:none}.privacy h2{font-size:24px}.privacy{padding:24px}.intro{font-size:17px}}
@media(prefers-color-scheme:dark){:root{--bg:#111318;--surface:#1b1e26;--text:#eceef4;--muted:#b0b7c6;--line:#343a47;--accent:#a9bbff;--tint:#222c49}.primary{background:#3455c5}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

footer{flex-wrap:wrap;gap:12px 24px}footer a{overflow-wrap:anywhere}