:root{
--ink:#11232b;--muted:#5a6f78;--line:#dde7ea;--bg:#f7fafb;--card:#fff;
--primary:#0f6e7e;--primary-d:#0a5260;--ok:#0b7a46}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);
font:17px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
.wrap{max-width:900px;margin:0 auto;padding:0 16px}
a{color:var(--primary-d)}
header.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}
header.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px}
.brand{font-weight:700;font-size:17px;color:var(--ink);text-decoration:none;line-height:1.2}
.brand small{display:block;font-weight:400;font-size:12px;color:var(--muted)}
nav a{margin-left:16px;font-size:15px;text-decoration:none;color:var(--ink)}
nav a:hover{color:var(--primary)}
.hero{background:linear-gradient(160deg,var(--primary-d),var(--primary));color:#fff;padding:46px 0 40px}
.hero h1{margin:0 0 12px;font-size:33px;line-height:1.2;letter-spacing:-.4px}
.hero p.sub{margin:0 0 20px;font-size:19px;opacity:.95;max-width:40em}
.pricetag{display:inline-block;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.3);
border-radius:9px;padding:10px 16px;font-size:16px;margin:0 10px 10px 0}
.pricetag b{font-size:21px}
.btn{display:inline-block;background:#fff;color:var(--primary-d);font-weight:650;
padding:13px 24px;border-radius:9px;text-decoration:none;border:2px solid #fff}
.btn:hover{background:transparent;color:#fff}
.btn.solid{background:var(--primary);color:#fff;border-color:var(--primary);cursor:pointer}
.btn.solid:hover{background:var(--primary-d);border-color:var(--primary-d);color:#fff}
main{padding:34px 0 10px}
section{margin:0 0 34px}
h2{font-size:24px;margin:34px 0 12px;letter-spacing:-.3px}
h3{font-size:18px;margin:22px 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px 22px;margin:0 0 18px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:14px}
.tick{list-style:none;padding:0}
.tick li{padding-left:28px;position:relative;margin:9px 0}
.tick li:before{content:"";position:absolute;left:0;top:.45em;width:16px;height:9px;
border-left:3px solid var(--ok);border-bottom:3px solid var(--ok);transform:rotate(-45deg)}
table{width:100%;border-collapse:collapse;margin:14px 0;font-size:16px;background:#fff}
th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line)}
th{background:#eff6f7;color:var(--primary-d);font-weight:650}
td.n,th.n{text-align:right;white-space:nowrap;font-variant-numeric:tabular-nums}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:0 16px;margin:9px 0}
details summary{cursor:pointer;font-weight:600;padding:14px 0;list-style:none}
details summary::-webkit-details-marker{display:none}
details summary:before{content:"+ ";color:var(--primary);font-weight:700}
details[open] summary:before{content:"\2212 "}
details .a{padding:0 0 14px;color:#2b3f47}
.band{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:30px 0;margin:34px 0}
.trust{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:15px;color:rgba(255,255,255,.9);margin-top:10px}
.trust span{white-space:nowrap}
form .f{margin:0 0 14px}
label{display:block;font-weight:600;font-size:15px;margin-bottom:5px}
input,select,textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:8px;
font:inherit;background:#fff;color:var(--ink)}
.hp{position:absolute;left:-9999px}
.small{font-size:14px;color:var(--muted)}
footer{background:var(--ink);color:#c8d6da;padding:30px 0;font-size:15px;margin-top:40px}
footer a{color:#fff}
footer .reg{font-size:13.5px;color:#8fa5ac;margin-top:14px;line-height:1.6}
#cc{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:2px solid var(--primary);
padding:16px;z-index:50;box-shadow:0 -6px 20px rgba(0,0,0,.1);display:none}
#cc .wrap{display:flex;gap:12px;align-items:center;flex-wrap:wrap;justify-content:space-between}
#cc p{margin:0;font-size:14.5px;max-width:52em}
#cc button{font:inherit;font-weight:600;padding:10px 18px;border-radius:8px;cursor:pointer;border:1px solid var(--primary)}
#cc .yes{background:var(--primary);color:#fff}
#cc .no{background:#fff;color:var(--primary-d)}
@media(max-width:620px){
 .hero h1{font-size:26px}.hero p.sub{font-size:17px}h2{font-size:21px}
 nav a{margin-left:11px;font-size:14px}body{font-size:16px}
 th,td{padding:9px 7px;font-size:15px}
}

/* ---- before and after slider ---- */
.ba{position:relative;overflow:hidden;border-radius:12px;border:1px solid var(--line);
background:#eef4f5;aspect-ratio:4/3;touch-action:pan-y;--pos:50%}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block;
user-select:none;-webkit-user-drag:none}
.ba img.after{clip-path:inset(0 0 0 var(--pos))}
.ba .divider{position:absolute;top:0;bottom:0;left:var(--pos);width:2px;background:#fff;
box-shadow:0 0 0 1px rgba(0,0,0,.18);pointer-events:none}
.ba .knob{position:absolute;top:50%;left:var(--pos);width:42px;height:42px;margin:-21px 0 0 -21px;
border-radius:50%;background:#fff;box-shadow:0 2px 10px rgba(0,0,0,.28);pointer-events:none;
display:flex;align-items:center;justify-content:center;color:var(--primary-d);font-size:15px;
font-weight:700;letter-spacing:-1px}
.ba .tag{position:absolute;bottom:10px;padding:5px 11px;border-radius:999px;font-size:13px;
font-weight:650;background:rgba(17,35,43,.72);color:#fff;pointer-events:none}
.ba .tag.b{left:10px}
.ba .tag.a{right:10px}
.ba input[type=range]{position:absolute;inset:0;width:100%;height:100%;margin:0;padding:0;
opacity:0;cursor:ew-resize;appearance:none;background:transparent}
.ba input[type=range]:focus-visible{opacity:1;outline:3px solid var(--primary);outline-offset:2px}
.ba-cap{font-size:14.5px;color:var(--muted);margin:10px 0 0;line-height:1.55}
.ba-cap b{color:var(--ink)}
.cases{display:grid;grid-template-columns:repeat(auto-fit,minmax(290px,1fr));gap:24px}
.demo-note{background:#fff7e6;border:1px solid #f0d9a8;border-radius:10px;padding:12px 15px;
font-size:14.5px;margin:12px 0 0}
@media(max-width:620px){.ba .knob{width:36px;height:36px;margin:-18px 0 0 -18px}}