:root{
  --bg:#f3f4f6; --surface:#ffffff; --ink:#1b2230; --soft:#566070; --faint:#8a93a3; --line:#e3e6eb;
  --mint:#34d399; --mint-deep:#047857; --mint-soft:#e3f7ef; --shadow:0 18px 50px rgba(30,45,70,.14);
}
@media (prefers-color-scheme:dark){
  :root{ --bg:#0f1318; --surface:#191e26; --ink:#f2f4f7; --soft:#a8b1bf; --faint:#7a8494; --line:#2a313c;
         --mint-deep:#6ee7b7; --mint-soft:#12382d; --shadow:0 18px 50px rgba(0,0,0,.5); }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
h1,h2,h3,.brand,.btn{font-family:ui-rounded,"SF Pro Rounded",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;font-weight:800;letter-spacing:-.02em}
h1{font-size:clamp(40px,6.4vw,76px);line-height:1.04;margin:0 0 20px}
h2{font-size:clamp(30px,4.2vw,48px);line-height:1.1;margin:0 0 14px}
h3{font-size:22px;line-height:1.2;margin:0 0 6px;letter-spacing:-.01em}
p{margin:0 0 14px}
em{font-style:normal;color:var(--mint)}
a{color:inherit}
img{max-width:100%;height:auto;display:block}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
header{padding:18px 0}
header .wrap{display:flex;align-items:center;gap:12px}
.brand{display:flex;align-items:center;gap:10px;font-size:20px;text-decoration:none;min-height:44px}
.brand img{width:36px;height:36px;border-radius:9px}
header .btn{margin-left:auto}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:52px;padding:0 26px;border-radius:16px;background:var(--ink);color:var(--bg);
  text-decoration:none;font-size:17px;letter-spacing:0;transition:transform .15s}
.btn:hover{transform:translateY(-2px)}
.btn.small{min-height:44px;padding:0 18px;font-size:15px;border-radius:13px}
.btn.mint{background:var(--mint);color:#0b2a20}
.lead{font-size:clamp(18px,2.1vw,22px);color:var(--soft);max-width:34em}
.note{font-size:14px;color:var(--faint);margin-top:14px}

.hero{padding:28px 0 0;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero-art{align-self:end;max-width:460px;justify-self:center}
.hero-text{padding:24px 0 56px}

section{padding:84px 0}
.center{text-align:center}
.center .lead{margin-left:auto;margin-right:auto}

.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:40px}
.step{text-align:left}
.step img{border-radius:24px;box-shadow:var(--shadow);border:1px solid var(--line);width:100%}
.step h3{margin-top:18px}
.step p{color:var(--soft);font-size:16px;margin:0}

.band{padding:0}
.compare{position:relative;border-radius:32px;overflow:hidden;box-shadow:var(--shadow);aspect-ratio:2/1;touch-action:pan-y;user-select:none;-webkit-user-select:none}
.compare img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;pointer-events:none}
.compare .before{clip-path:inset(0 calc(100% - var(--pos)) 0 0)}
.compare .tag{position:absolute;top:16px;padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.92);color:#1b2230;font-weight:700;font-size:14px}
.compare .left{left:16px}.compare .right{right:16px}
.compare .handle{position:absolute;top:0;bottom:0;left:var(--pos);width:4px;margin-left:-2px;background:#fff;box-shadow:0 0 14px rgba(20,24,32,.35)}
.compare .handle span{position:absolute;top:50%;left:50%;width:52px;height:52px;margin:-26px 0 0 -26px;border-radius:50%;background:#fff;box-shadow:0 6px 18px rgba(20,24,32,.3);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 52 52'%3E%3Cpath d='M22 19l-7 7 7 7M30 19l7 7-7 7' fill='none' stroke='%231b2230' stroke-width='3.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}
.compare input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize}
.badge{display:inline-block;line-height:0;border-radius:10px;transition:transform .15s}
.badge:hover{transform:translateY(-2px)}
.badge img{height:60px;width:auto}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:40px;text-align:left}
.card{background:var(--surface);border:1px solid var(--line);border-radius:22px;padding:24px}
.card p{color:var(--soft);font-size:16px;margin:0}
.dot{width:44px;height:44px;border-radius:14px;background:var(--mint-soft);color:var(--mint-deep);display:flex;align-items:center;justify-content:center;font:800 20px ui-rounded,-apple-system,sans-serif;margin-bottom:14px}

.faq{max-width:760px;margin:36px auto 0;text-align:left}
details{background:var(--surface);border:1px solid var(--line);border-radius:18px;margin-bottom:10px}
summary{cursor:pointer;list-style:none;padding:18px 54px 18px 22px;font-weight:700;position:relative;min-height:44px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:22px;top:50%;transform:translateY(-50%);font-size:26px;font-weight:400;color:var(--faint)}
details[open] summary::after{content:"–"}
details p{padding:0 22px 20px;margin:0;color:var(--soft)}

.cta{background:var(--mint-soft);border-radius:36px;padding:64px 24px;text-align:center}
.cta h2{margin-bottom:10px}
.cta p{color:var(--soft);margin-bottom:26px}

footer{padding:40px 0 56px;color:var(--faint);font-size:15px}
footer .wrap{display:flex;flex-wrap:wrap;gap:8px 22px;align-items:center}
footer a{text-decoration:none;display:inline-flex;align-items:center;min-height:44px}
footer a:hover{color:var(--ink)}

@media (max-width:900px){
  .hero .wrap{grid-template-columns:1fr;gap:8px}
  .hero-text{padding:8px 0 32px}
  .hero-art{max-width:340px}
  .steps{grid-template-columns:repeat(2,1fr);gap:28px 14px}
  .grid{grid-template-columns:1fr}
  section{padding:60px 0}
}
@media (max-width:420px){ .wrap{padding:0 16px} .compare{border-radius:22px;aspect-ratio:4/3} .cta{border-radius:26px;padding:48px 18px} }

/* guides */
.guides{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:36px;text-align:left}
.guide{display:block;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:22px 24px;text-decoration:none;transition:transform .15s}
.guide:hover{transform:translateY(-2px)}
.guide h3{font-size:20px;margin:0 0 6px}
.guide p{margin:0;color:var(--soft);font-size:15.5px}
.narrow{max-width:760px}
.article{padding:8px 0 40px}
.article h1{font-size:clamp(34px,5vw,54px);margin:6px 0 24px}
.article h2{font-size:clamp(24px,3vw,30px);margin:40px 0 12px}
.article p,.article li{color:var(--soft)}
.article p strong,.article li strong{color:var(--ink)}
.article a{color:var(--mint-deep);text-underline-offset:3px}
.article .intro{font-size:clamp(18px,2vw,21px);color:var(--ink)}
.article .small{font-size:14px;color:var(--faint)}
.crumb{margin:0;font-size:15px}
.crumb a{color:var(--faint);text-decoration:none;display:inline-flex;align-items:center;min-height:44px}
.lead-image{width:100%;border-radius:26px;box-shadow:var(--shadow);margin:0 0 28px}
.lead-image.plain{box-shadow:none;border:1px solid var(--line)}
.article ul,.article ol{padding-left:22px;margin:0 0 14px}
.article li{margin:8px 0}
.steps-list{list-style:none;padding:0;counter-reset:step}
.steps-list li{counter-increment:step;position:relative;padding:16px 18px 16px 64px;background:var(--surface);border:1px solid var(--line);border-radius:18px;margin:10px 0}
.steps-list li::before{content:counter(step);position:absolute;left:16px;top:16px;width:34px;height:34px;border-radius:11px;background:var(--mint-soft);color:var(--mint-deep);
  display:flex;align-items:center;justify-content:center;font:800 16px ui-rounded,-apple-system,sans-serif}
.check{list-style:none;padding:0}
.check li{position:relative;padding:12px 16px 12px 50px;background:var(--surface);border:1px solid var(--line);border-radius:14px;margin:8px 0;color:var(--ink)}
.check li::before{content:"";position:absolute;left:16px;top:50%;width:20px;height:20px;margin-top:-11px;border:2px solid var(--faint);border-radius:50%}
.table{overflow-x:auto;margin:0 0 14px}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:15.5px}
th,td{text-align:left;padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-family:ui-rounded,-apple-system,sans-serif;color:var(--ink)}
tbody th{color:var(--ink);white-space:nowrap}
td{color:var(--soft)}
.try{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;background:var(--mint-soft);border-radius:26px;padding:28px;margin:44px 0 0}
.try h2{margin:0 0 6px;font-size:26px}
.try p{margin:0;color:var(--soft);max-width:26em}
.more{margin-top:44px}
.more ul{list-style:none;padding:0}
.more li{margin:0;border-top:1px solid var(--line)}
.more a{display:flex;align-items:center;min-height:52px;text-decoration:none;color:var(--ink);font-weight:600}
@media (max-width:700px){.guides{grid-template-columns:1fr}.steps-list li{padding-left:58px}}