:root{
  --bg:#f7f8fa; --card:#fff; --line:#e8eaee; --ink:#161922; --muted:#6b7280;
  --brand:#6366f1; --brand2:#4f46e5; --green:#0f9d58; --shadow:0 12px 40px rgba(20,22,40,.10);
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.55;-webkit-font-smoothing:antialiased;}
a{color:inherit}
.wrap{max-width:1100px;margin:0 auto;padding:0 24px;}
.nav{display:flex;justify-content:space-between;align-items:center;padding:20px 0;}
.logo{font-weight:800;font-size:21px;letter-spacing:-.4px;}
.logo span{color:var(--brand);}
.nav-links{display:flex;gap:10px;align-items:center;}
.btn{display:inline-block;border:none;border-radius:11px;padding:11px 20px;font-size:15px;font-weight:600;cursor:pointer;text-decoration:none;transition:.15s;white-space:nowrap;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 4px 14px rgba(99,102,241,.35);}
.btn-primary:hover{background:var(--brand2);transform:translateY(-1px);}
.btn-ghost{background:transparent;color:var(--ink);border:1px solid var(--line);}
.btn-ghost:hover{border-color:var(--brand);color:var(--brand);}

.head{text-align:center;max-width:640px;margin:44px auto 8px;padding:0 24px;}
.head h1{font-size:40px;letter-spacing:-1.2px;margin:0 0 14px;}
.head p{font-size:18px;color:var(--muted);margin:0;}

.toggle{display:flex;justify-content:center;align-items:center;gap:12px;margin:28px 0 8px;font-size:14.5px;font-weight:600;}
.toggle .save{background:#eafaf1;color:var(--green);font-size:12px;padding:3px 9px;border-radius:20px;}
.switch{position:relative;width:52px;height:28px;background:var(--line);border-radius:20px;cursor:pointer;transition:.2s;}
.switch.on{background:var(--brand);}
.switch .knob{position:absolute;top:3px;left:3px;width:22px;height:22px;background:#fff;border-radius:50%;transition:.2s;box-shadow:0 1px 3px rgba(0,0,0,.2);}
.switch.on .knob{left:27px;}
.muted-lab{color:var(--muted);} .active-lab{color:var(--ink);}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;max-width:1000px;margin:32px auto 10px;padding:0 24px;}
@media(max-width:820px){ .grid{grid-template-columns:1fr;max-width:420px;} }
.plan{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:30px 26px;display:flex;flex-direction:column;position:relative;}
.plan.popular{border-color:var(--brand);box-shadow:var(--shadow);}
.tag{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--brand);color:#fff;font-size:12px;font-weight:700;padding:5px 14px;border-radius:20px;}
.plan h3{font-size:19px;margin:0 0 4px;}
.plan .desc{font-size:13.5px;color:var(--muted);margin:0 0 18px;min-height:38px;}
.price{font-size:40px;font-weight:800;letter-spacing:-1.5px;line-height:1;}
.price small{font-size:15px;font-weight:600;color:var(--muted);letter-spacing:0;}
.price-sub{font-size:12.5px;color:var(--muted);margin:6px 0 20px;min-height:16px;}
.plan .btn{width:100%;text-align:center;margin-bottom:22px;}
ul.feats{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px;}
ul.feats li{display:flex;gap:10px;font-size:14px;align-items:flex-start;}
ul.feats li .ic{color:var(--green);font-weight:800;flex-shrink:0;}
ul.feats li.off{color:var(--muted);} ul.feats li.off .ic{color:#c3c8d1;}

.note{max-width:1000px;margin:8px auto 0;padding:0 24px;text-align:center;color:var(--muted);font-size:13.5px;}
.faq{max-width:720px;margin:56px auto;padding:0 24px;}
.faq h2{text-align:center;font-size:26px;letter-spacing:-.6px;margin:0 0 26px;}
.qa{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin-bottom:12px;}
.qa h4{margin:0 0 6px;font-size:15.5px;}
.qa p{margin:0;color:var(--muted);font-size:14px;}
footer{border-top:1px solid var(--line);padding:26px 0;color:var(--muted);font-size:13.5px;text-align:center;}