:root{--ink:#1d1d1f;--muted:#6e6e73;--line:#e5e5ea;--bg:#fff;--soft:#f5f5f7;--accent:#7a28e6;--accent2:#5e14c4}
[hidden]{display:none!important}
*{box-sizing:border-box}
body{margin:0;font:17px/1.55 -apple-system,BlinkMacSystemFont,"SF Pro Text","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--accent)}
.nav{display:flex;justify-content:space-between;align-items:center;max-width:1080px;margin:0 auto;padding:14px 20px}
.brand{font-weight:700;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:8px}
.dot{width:14px;height:14px;border-radius:50%;border:3px solid var(--accent)}
.nav nav a{margin-left:18px;color:var(--muted);text-decoration:none;font-size:15px}
main{max-width:1080px;margin:0 auto;padding:0 20px}
.hero{text-align:center;padding:36px 0 18px}
h1{font-size:clamp(36px,6vw,60px);line-height:1.05;letter-spacing:-.02em;margin:0 0 14px}
.sub{max-width:640px;margin:0 auto;color:var(--muted);font-size:19px}
h2{font-size:clamp(28px,4vw,40px);letter-spacing:-.01em;margin:72px 0 8px;text-align:center}
.lead{text-align:center;color:var(--muted);margin:0 auto 28px;max-width:620px}
.tool{display:grid;gap:20px;margin-top:20px}
.panel{background:var(--soft);border-radius:22px;padding:20px;display:grid;gap:18px}
@media(min-width:820px){.panel{grid-template-columns:1.3fr 1fr;align-items:center}}
.drop{display:flex;align-items:center;justify-content:center;min-height:260px;border:2px dashed #c7c7cc;border-radius:16px;background:#fff;cursor:pointer;text-align:center;color:var(--muted);padding:12px;overflow:hidden}
.drop.over{border-color:var(--accent)}
.drop b{color:var(--ink);font-size:20px}
.drop img{max-width:100%;max-height:360px}
.opts{display:grid;gap:12px}
.seg{display:flex;background:#e8e8ed;border-radius:12px;padding:3px}
.seg button{flex:1;border:0;background:none;padding:10px;border-radius:9px;font:inherit;font-size:15px;cursor:pointer;color:var(--muted)}
.seg button.on{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.seg.small button{padding:6px 12px}
.primary,.ghost{display:inline-block;text-align:center;font:inherit;font-weight:600;border-radius:980px;padding:13px 22px;cursor:pointer;text-decoration:none}
.primary{background:var(--accent);color:#fff;border:0}
.primary:hover{background:var(--accent2)}
.primary:disabled{opacity:.45;cursor:default}
.ghost{background:#fff;color:var(--accent);border:1.5px solid var(--accent)}
.hint{font-size:14px;color:var(--muted);margin:0}
.err{color:#c0262d;font-size:15px;margin:0}
.result .canvasWrap{position:relative;background:#fff;border-radius:16px;min-height:260px;display:flex;align-items:center;justify-content:center;padding:10px}
#cv{max-width:100%;max-height:520px}
.spin{position:absolute;inset:0;display:flex;flex-direction:column;gap:10px;align-items:center;justify-content:center;background:rgba(255,255,255,.88);border-radius:16px;color:var(--muted)}
.spin i{width:34px;height:34px;border:3px solid #ddd;border-top-color:var(--accent);border-radius:50%;animation:r 1s linear infinite}
@keyframes r{to{transform:rotate(360deg)}}
.controls{display:grid;gap:14px}
.controls input[type=range]{width:55%;vertical-align:middle;accent-color:var(--accent)}
.row{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.size input{width:80px;font:inherit;padding:6px 8px;border:1px solid var(--line);border-radius:8px}
.muted{color:var(--muted)}
.chk{display:flex;gap:6px;align-items:center}
.grid{display:grid;gap:20px}
.three{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.ex{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.ex figure{margin:0;background:var(--soft);border-radius:18px;padding:12px}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.pair img{width:100%;aspect-ratio:3/4;object-fit:contain;background:#fff;border-radius:10px}
figcaption{text-align:center;color:var(--muted);font-size:14px;margin-top:8px}
.why h3,.card h3{margin:0 0 6px}
.why p{color:var(--muted);margin:0}
.card{background:var(--soft);border-radius:22px;padding:24px;display:flex;flex-direction:column;gap:8px}
.card.hot{outline:2px solid var(--accent)}
.big{font-size:36px;font-weight:700;margin:0}
.big small{font-size:15px;font-weight:400;color:var(--muted)}
.card ul{padding-left:18px;margin:0 0 10px;color:var(--muted);flex:1}
#faq{max-width:760px;margin:0 auto}
details{border-bottom:1px solid var(--line);padding:16px 0}
summary{cursor:pointer;font-weight:600}
details p{color:var(--muted);margin:10px 0 0}
footer{max-width:1080px;margin:80px auto 0;padding:24px 20px 40px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:18px;font-size:14px;color:var(--muted)}
footer a{color:var(--muted)}
dialog{border:0;border-radius:20px;padding:24px;max-width:400px;width:calc(100% - 32px)}
dialog::backdrop{background:rgba(0,0,0,.35)}
dialog input[type=email]{width:100%;font:inherit;padding:12px;border:1px solid var(--line);border-radius:10px;margin:6px 0 14px}
.hp{position:absolute;left:-9999px}
.legal{max-width:760px;margin:0 auto;padding-bottom:40px}
.legal h1{font-size:40px;margin-top:30px}
.legal h2{text-align:left;font-size:22px;margin:30px 0 6px}
.consent{font-size:14px;color:var(--muted);align-items:flex-start}
.consent input{margin-top:3px}
.legal table{border-collapse:collapse;width:100%;font-size:15px;margin:10px 0}.legal th,.legal td{border:1px solid var(--line);padding:8px;text-align:left;vertical-align:top}
.legal ol,.legal ul{padding-left:22px}.legal li{margin:4px 0}
#acct{margin-left:18px;position:relative}
#acct .signin{border:1px solid var(--line);border-radius:980px;padding:6px 14px;color:var(--ink);text-decoration:none;font-size:14px;background:#fff;cursor:pointer;font:inherit;font-size:14px}
#acct img{width:30px;height:30px;border-radius:50%;vertical-align:middle;cursor:pointer}
#acct .avatarBtn{border:0;background:none;padding:0;cursor:pointer;display:flex;align-items:center;gap:8px;font:inherit;font-size:14px;color:var(--muted)}
#acctMenu{position:absolute;right:0;top:40px;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.12);padding:14px;width:260px;z-index:20;font-size:14px}
#acctMenu p{margin:0 0 8px;color:var(--muted)}
#acctMenu a,#acctMenu button{display:block;width:100%;text-align:left;margin:6px 0 0;color:var(--accent);background:none;border:0;padding:4px 0;font:inherit;font-size:14px;cursor:pointer;text-decoration:none}
.banner{background:#efe7fd;color:#3c1680;border-radius:14px;padding:12px 16px;margin:12px 0;font-size:15px}
.card button+button{margin-top:8px}
.nav nav{display:flex;align-items:center;flex-wrap:nowrap;white-space:nowrap}
.nav nav a{margin-left:18px}
#acct{display:flex;align-items:center}
.banner{display:flex;justify-content:space-between;align-items:center;gap:12px}
.bannerX{border:0;background:none;font-size:22px;line-height:1;color:#3c1680;cursor:pointer;padding:0 4px}
@media(max-width:600px){.nav nav a[href="#examples"],.nav nav a[href="#faq"]{display:none}.nav nav a{margin-left:12px}#acct .avatarBtn span{font-size:13px}}
#acctMenu{white-space:normal;line-height:1.45}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:18px 0}.pair figure{margin:0;background:var(--soft);border-radius:14px;padding:10px;text-align:center}.pair img{width:100%;height:auto;display:block;border-radius:8px;background:#fff}.pair figcaption{font-size:13px;color:var(--muted);margin-top:6px}
.pics{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:16px 0}.pics figure,.shot{margin:0;background:var(--soft);border-radius:14px;padding:10px;text-align:center}.pics img,.shot img{width:100%;height:auto;display:block;border-radius:8px;background:#fff}.pics figcaption,.shot figcaption{font-size:13px;color:var(--muted);margin-top:6px}.shot{margin:16px 0}.legal h3{font-size:17px;margin:22px 0 4px}
.diag{width:100%;height:auto;display:block}.d-bg{fill:#fff;stroke:#d9d9e0}.d-f{fill:#f4f4f6;stroke:#c9c9d2}.d-hi{fill:#efe6ff;stroke:#8028e6;stroke-width:2}.d-t{font:600 20px system-ui,sans-serif;fill:#1d1d1f}.d-l{font:15px system-ui,sans-serif;fill:#444}.d-v{font:14px system-ui,sans-serif;fill:#1d1d1f}.d-n{font:12px system-ui,sans-serif;fill:#777}.d-ok{font:700 18px system-ui,sans-serif;fill:#1a8f3c}.d-ln{stroke:#8028e6;stroke-width:2}