:root{
  --bg:#f6f9fc; --surface:#ffffff; --text:#0f1b2a; --muted:#5a6b7d; --line:#e1e8ef;
  --blue:#2AABEE; --blue-deep:#1A86C0; --green:#25D366; --green-deep:#128C7E;
  --grad:linear-gradient(135deg,#2AABEE 0%,#25D366 100%);
  --shadow:0 10px 30px rgba(15,27,42,.08);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0b1118;--surface:#121b25;--text:#eaf1f8;--muted:#9bacbd;--line:#223041;--shadow:0 10px 30px rgba(0,0,0,.35)}
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
a{color:inherit}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header{position:sticky;top:0;z-index:5;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.15rem;text-decoration:none}
.brand img{width:32px;height:32px}
.nav nav{display:flex;gap:22px;align-items:center}
.nav nav a{text-decoration:none;color:var(--muted);font-size:.95rem}
.nav nav a:hover{color:var(--text)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;text-decoration:none;border:0;cursor:pointer;font-size:1rem}
.btn.primary{background:var(--grad);color:#fff;box-shadow:0 8px 20px rgba(37,211,102,.25)}
.btn.ghost{background:var(--surface);border:1px solid var(--line);color:var(--text)}
.btn[aria-disabled=true]{opacity:.55;pointer-events:none}
.hero{padding:76px 0 56px;text-align:center}
.hero h1{font-size:clamp(2.1rem,6vw,3.6rem);line-height:1.1;margin:0 0 18px;letter-spacing:-.02em}
.hero h1 span{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p{max-width:620px;margin:0 auto 30px;color:var(--muted);font-size:1.15rem}
.cta{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.note{margin-top:14px;color:var(--muted);font-size:.9rem}
section{padding:56px 0}
section h2{font-size:1.8rem;margin:0 0 8px;letter-spacing:-.01em}
.lead{color:var(--muted);margin:0 0 28px;max-width:640px}
.grid{display:grid;gap:18px}
.g2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.g3{grid-template-columns:repeat(auto-fit,minmax(230px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px;font-size:1.15rem}
.card p{margin:0;color:var(--muted)}
.dot{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;color:#fff;font-weight:700;margin-bottom:14px}
.tg{background:var(--blue)} .wa{background:var(--green)} .num{background:var(--grad)}
.pill{display:inline-block;padding:3px 10px;border-radius:999px;font-size:.78rem;font-weight:600;background:color-mix(in srgb,var(--green) 18%,transparent);color:var(--green-deep)}
@media (prefers-color-scheme:dark){.pill{color:var(--green)}}
details{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 20px;margin-bottom:12px}
summary{cursor:pointer;font-weight:600}
details p{margin:10px 0 0;color:var(--muted)}
.community{text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:28px;padding:44px 24px;box-shadow:var(--shadow)}
footer{border-top:1px solid var(--line);padding:28px 0;color:var(--muted);font-size:.9rem}
footer .row{display:flex;flex-wrap:wrap;gap:12px 24px;justify-content:space-between}
footer a{text-decoration:none} footer a:hover{text-decoration:underline}
@media (max-width:640px){.nav nav a.hide-s{display:none}.hero{padding-top:52px}}
.plan{display:flex;flex-direction:column;gap:12px;position:relative}
.plan .price{font-size:2.2rem;font-weight:800;letter-spacing:-.02em;line-height:1.1}
.plan .price small{font-size:.95rem;font-weight:500;color:var(--muted)}
.plan ul{list-style:none;margin:4px 0 8px;padding:0;color:var(--muted);flex:1}
.plan li{padding:5px 0 5px 24px;position:relative}
.plan li::before{content:"";position:absolute;left:0;top:11px;width:14px;height:8px;border-left:2px solid var(--green);border-bottom:2px solid var(--green);transform:rotate(-45deg)}
.plan .btn{width:100%}
.plan.best{border:2px solid var(--green)}
.plan.best .pill{align-self:flex-start}