:root{--t:#1d1d1f;--m:#6e6e73;--g:#f5f5f7;--a:#0071e3;--r:20px}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;font:17px/1.47 -apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","PingFang SC","Helvetica Neue","Noto Sans CJK SC",Arial,sans-serif;color:var(--t);background:#fff;-webkit-font-smoothing:antialiased;letter-spacing:-.01em}
a{color:var(--a);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1024px;margin:0 auto;padding:0 22px}
.hd{position:sticky;top:0;z-index:10;background:rgba(255,255,255,.72);backdrop-filter:saturate(180%) blur(20px);-webkit-backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.08)}
.hdw{display:flex;align-items:center;justify-content:space-between;height:48px}
.logo{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:17px;color:var(--t)!important;letter-spacing:-.02em}.logo b{font-weight:500;color:var(--t)}
.nav{display:flex;align-items:center;gap:26px;font-size:12px}.nav a{color:var(--t);opacity:.8}.nav a:hover{opacity:1;text-decoration:none}.nav a[aria-current]{opacity:1;font-weight:600}
.lt{color:var(--m)!important}
.dd{position:relative}.dd summary{cursor:pointer;list-style:none;opacity:.8}.dd summary::-webkit-details-marker{display:none}
.dd div{position:absolute;top:30px;left:-16px;background:rgba(255,255,255,.96);backdrop-filter:blur(20px);border-radius:14px;padding:10px;min-width:250px;display:flex;flex-direction:column;box-shadow:0 8px 30px rgba(0,0,0,.08)}.dd div a{padding:7px 10px;font-size:13px}
.mt{display:none;background:none;border:0;font-size:20px;color:var(--t)}
.btn{display:inline-block;background:var(--a);color:#fff!important;padding:12px 24px;border-radius:980px;font-size:17px;border:0;cursor:pointer;font-family:inherit}.btn:hover{background:#0077ed;text-decoration:none}
.btn.sm{padding:4px 12px;font-size:12px;opacity:1!important}
.btn.ghost{background:transparent;color:var(--a)!important;border:1px solid var(--a)}.btn.ghost:hover{background:var(--a);color:#fff!important}
.hero{text-align:center;padding:120px 0 100px;background:#fff}.hero.sm{padding:90px 0 70px;background:var(--g)}
.hero h1{font-size:clamp(48px,8vw,80px);line-height:1.05;font-weight:700;letter-spacing:-.035em;margin:0 auto 18px;max-width:900px}
.hero.sm h1{font-size:clamp(40px,6vw,64px)}
.lead{font-size:clamp(19px,2.2vw,24px);color:var(--m);max-width:680px;margin:0 auto;line-height:1.35}
.ctas{display:flex;gap:16px;flex-wrap:wrap;justify-content:center;margin-top:34px}
.sec{padding:100px 0}.sec.alt{background:var(--g)}
.sec h2{font-size:clamp(32px,5vw,48px);line-height:1.1;font-weight:700;letter-spacing:-.03em;margin:0 0 48px;text-align:center}
.sec h3{font-size:21px;font-weight:600;letter-spacing:-.02em}
.sec p{max-width:720px;margin-left:auto;margin-right:auto}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.g3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--g);border-radius:var(--r);padding:36px 30px}.sec.alt .card{background:#fff}
.card h3{margin:16px 0 8px}.card p{color:var(--m);margin:0}
.card.link{color:inherit;transition:transform .3s}.card.link:hover{transform:scale(1.02);text-decoration:none}.more{display:block;margin-top:16px;color:var(--a)}
.ic{width:36px;height:36px;color:var(--t)}
.ck{list-style:none;padding:0;margin:0 auto;max-width:720px}.ck li{display:flex;gap:10px;margin:10px 0}.ck .ic{width:20px;height:20px;flex:none;margin-top:3px;color:var(--a)}.card .ck li{font-size:15px;color:var(--m)}
.steps{counter-reset:s;list-style:none;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}.steps li{counter-increment:s}
.steps li::before{content:counter(s);display:block;font-size:48px;font-weight:700;letter-spacing:-.03em;color:var(--t);margin-bottom:6px}.steps b{display:block;font-size:19px}.steps span{color:var(--m);font-size:15px}
.note{max-width:820px;margin:0 auto;text-align:center;color:var(--m);font-size:15px;padding:6px 0}.note strong{color:var(--t)}.note.warn{margin:28px auto 0;background:var(--g);border-radius:14px;padding:16px 22px;text-align:left}
.small{font-size:13px;color:var(--m)}
.gcols{display:grid;grid-template-columns:repeat(3,1fr);gap:44px 36px}.lab{font-size:12px;font-weight:600;color:var(--m);text-transform:uppercase;letter-spacing:.04em;margin:0 0 10px!important;padding-bottom:8px;border-bottom:1px solid #d2d2d7}
.plain{list-style:none;padding:0;margin:0}.plain li{font-size:14px;line-height:1.45;margin:0 0 9px}
.ctab{text-align:center;padding:110px 0;background:#fff}.ctab h2{font-size:clamp(32px,5vw,48px);letter-spacing:-.03em;margin:0 0 12px}.ctab p{color:var(--m);font-size:19px}
.btn.ghost.light{color:var(--a)!important}
.cols{display:grid;grid-template-columns:1fr 1.4fr;gap:20px}.form label{display:block;margin:12px 0;font-size:13px;color:var(--m)}
.form input,.form select,.form textarea{width:100%;margin-top:5px;padding:12px 14px;border:1px solid #d2d2d7;border-radius:12px;font:inherit;font-size:16px;background:#fff;color:var(--t)}.form input:focus,.form textarea:focus{outline:2px solid var(--a);border-color:transparent}
.ft{background:var(--g);color:var(--m);padding:30px 0 20px;font-size:12px;line-height:1.5}.ft a{color:#424245}.ft .logo{font-size:14px}.fg{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}.ft ul{list-style:none;padding:0;margin:0}.ft li{margin:4px 0}.ft h4{color:var(--t);font-size:12px;font-weight:600;margin:12px 0 8px}
.fd{border-top:1px solid #d2d2d7;margin-top:18px;padding-top:14px}.fd p{margin:4px 0}
.fi{opacity:0;transform:translateY(24px);transition:opacity .8s ease,transform .8s ease}.fi.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){.fi{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}.card.link{transition:none}}
@media(max-width:833px){.mt{display:block}.nav{display:none;position:absolute;top:48px;left:0;right:0;background:rgba(255,255,255,.97);flex-direction:column;align-items:flex-start;gap:16px;padding:20px 22px 26px;font-size:17px}.nav.open{display:flex}.dd div{position:static;box-shadow:none;background:none;padding:6px 0 0 10px}
.g3,.steps,.cols,.fg,.gcols{grid-template-columns:1fr}.hero{padding:80px 0 70px}.sec{padding:70px 0}.sec h2{margin-bottom:32px}}
.faq{max-width:760px;margin:0 auto}.faq details{border-bottom:1px solid #d2d2d7;padding:18px 0}.faq summary{cursor:pointer;font-weight:600;font-size:19px;list-style:none;display:flex;justify-content:space-between}.faq summary::after{content:"+";color:var(--a);font-weight:400}.faq details[open] summary::after{content:"–"}.faq summary::-webkit-details-marker{display:none}.faq p{color:var(--m);margin:10px 0 0;max-width:none}