:root{--bg:#fff;--bg2:#f5f5f7;--text:#1d1d1f;--muted:#6e6e73;--line:#d2d2d7;--accent:#0071e3;--card:#fff;--shadow:0 24px 60px rgba(0,0,0,.12)}
@media (prefers-color-scheme:dark){:root{--bg:#000;--bg2:#161617;--text:#f5f5f7;--muted:#a1a1a6;--line:#38383a;--accent:#2997ff;--card:#1c1c1e;--shadow:0 24px 60px rgba(0,0,0,.7)}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:17px/1.55 -apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue","Segoe UI",Roboto,"Noto Sans","Noto Sans Arabic","Noto Sans Hebrew","Noto Sans Thai","Noto Sans Devanagari",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}
.narrow{max-width:760px}
.center{text-align:center}
.muted{color:var(--muted)}
.nav{position:sticky;top:0;z-index:10;background:color-mix(in srgb,var(--bg) 82%,transparent);-webkit-backdrop-filter:saturate(180%) blur(20px);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid color-mix(in srgb,var(--line) 55%,transparent)}
.nav .wrap{display:flex;align-items:center;gap:24px;height:52px}
.brand{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--text)}
.brand:hover{text-decoration:none}
.nav nav{display:flex;gap:22px;margin-inline-start:auto;font-size:14px}
.nav nav a{color:var(--text)}
.btn{display:inline-block;background:var(--accent);color:#fff;border-radius:980px;padding:12px 24px;font-weight:600;font-size:17px;line-height:1.2}
.btn:hover{text-decoration:none;filter:brightness(1.08)}
.btn.small{padding:6px 14px;font-size:13px}
.btn.disabled{background:var(--bg2);color:var(--muted);border:1px solid var(--line)}
.hero{text-align:center;padding:76px 0 24px}
.hero h1{font-size:clamp(40px,6.4vw,78px);line-height:1.04;letter-spacing:-.025em;margin:0 auto 22px;max-width:920px;font-weight:700}
.lead{font-size:clamp(19px,2.2vw,24px);color:var(--muted);max-width:760px;margin:0 auto 32px;line-height:1.42}
.lead.left{margin-inline-start:0;text-align:start}
.fine{font-size:14px;color:var(--muted);margin:14px 0 0}
.shot{display:block;margin:40px auto 0}
.shot.inline{margin:32px auto}
section{padding:76px 0}
section h2{font-size:clamp(30px,4.2vw,50px);letter-spacing:-.02em;line-height:1.08;text-align:center;margin:0 auto 38px;max-width:860px}
.works,.how,.final{background:var(--bg2)}
.apps{list-style:none;padding:0;margin:0 auto;display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:880px}
.apps li{background:var(--card);border:1px solid var(--line);border-radius:980px;padding:8px 16px;font-size:15px}
.note{text-align:center;color:var(--muted);max-width:660px;margin:28px auto 0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:34px 44px}
.feature h3{font-size:21px;line-height:1.25;margin:0 0 8px;letter-spacing:-.01em}
.feature p{margin:0;color:var(--muted)}
.gallery{display:grid;grid-template-columns:1fr;gap:22px;margin-top:60px}
@media (min-width:720px){.gallery{grid-template-columns:repeat(2,1fr)}}
.gallery figure{margin:0;background:var(--bg2);border-radius:24px;padding:22px;display:flex;justify-content:center;align-items:center;min-height:260px}
.steps-home{list-style:none;counter-reset:s;padding:0;margin:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:22px}
.steps-home li{counter-increment:s;background:var(--card);border-radius:20px;padding:26px;font-size:18px}
.steps-home li::before{content:counter(s);display:block;font-size:44px;font-weight:700;line-height:1;color:var(--accent);margin-bottom:12px}
.privacy-block{text-align:center}
.privacy-block p{max-width:700px;margin:0 auto;color:var(--muted);font-size:20px}
details{border-bottom:1px solid var(--line);padding:18px 0}
summary{cursor:pointer;font-weight:600;font-size:18px;list-style:none;display:flex;justify-content:space-between;gap:16px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--muted);font-weight:400;transition:transform .2s}
details[open] summary::after{transform:rotate(45deg)}
details p{color:var(--muted);margin:10px 0 0}
.guide-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:18px;padding:0;margin:0;list-style:none}
.guide-list a{display:block;background:var(--bg2);border-radius:20px;padding:22px 24px;color:var(--text);height:100%}
.guide-list a:hover{text-decoration:none;background:color-mix(in srgb,var(--bg2) 82%,var(--line))}
.guide-list strong{display:block;font-size:19px;line-height:1.3;margin-bottom:8px}
.guide-list span{color:var(--muted);font-size:15px}
.more .center{margin-top:26px}
.final{text-align:center}
.article{padding-top:44px;padding-bottom:80px}
.article h1{font-size:clamp(32px,4.6vw,50px);letter-spacing:-.02em;line-height:1.08;margin:10px 0 22px}
.article h2{font-size:27px;text-align:start;margin:44px 0 14px;letter-spacing:-.01em}
.article p,.article li{font-size:18px}
.crumbs{font-size:14px;color:var(--muted)}
.crumbs a{color:var(--muted)}
.cta-box{background:var(--bg2);border-radius:20px;padding:20px 24px;display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin:30px 0}
.cta-box strong{font-size:18px}
ol.steps{padding-inline-start:24px}
ol.steps li{margin:12px 0}
.tips{background:var(--bg2);border-radius:20px;padding:20px 24px 20px 44px;margin:24px 0}
.tips li{margin:8px 0;color:var(--muted)}
.related{padding-inline-start:22px}
.related li{margin:8px 0}
footer{border-top:1px solid var(--line);padding:44px 0 64px;font-size:13px;color:var(--muted)}
footer .cols{display:grid;grid-template-columns:1fr 2fr 2fr;gap:28px}
footer h4{color:var(--text);font-size:13px;margin:0 0 10px}
footer ul{list-style:none;padding:0;margin:0}
footer li{margin:7px 0}
footer a{color:var(--muted)}
.langs{display:flex;flex-wrap:wrap;gap:6px 14px}
.langs a[aria-current]{color:var(--text);font-weight:600}
.copy{margin-top:32px}
@media (max-width:760px){.nav nav{display:none}section{padding:54px 0}.hero{padding-top:52px}footer .cols{grid-template-columns:1fr}}