:root{
  --wine:#3a0d1e; --wine2:#5c1a33; --rose:#b23a64; --blush:#ec7fa3; --gold:#d4a64a; --gold2:#f0c86a;
  --ink:#2a0f18; --muted:#8a6b75; --line:rgba(58,13,30,.12); --bg:#fcf6f3; --card:#ffffff;
  --grad:linear-gradient(135deg,var(--wine),var(--wine2) 55%,var(--rose));
  --goldgrad:linear-gradient(135deg,var(--gold2),var(--gold));
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
.wrap{max-width:1040px;margin:0 auto;padding:0 24px}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em}
a{color:var(--rose);text-decoration:none}
.nav{display:flex;align-items:center;justify-content:space-between;max-width:1040px;margin:0 auto;padding:18px 24px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:20px;color:var(--ink)}
.mark{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--grad);color:var(--gold2);font-weight:800;box-shadow:0 0 14px rgba(178,58,100,.5)}
.nav nav{display:flex;align-items:center;gap:22px}
.nav nav a{color:var(--muted);font-weight:500}
.btn{display:inline-block;padding:12px 22px;border-radius:12px;font-weight:600;transition:transform .08s ease,box-shadow .2s}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--goldgrad);color:#4a330a;box-shadow:0 8px 22px rgba(212,166,74,.45)}
.btn.ghost{background:transparent;border:1.5px solid var(--line);color:var(--ink)}
.btn.big{font-size:18px;padding:16px 34px}
.hero{background:radial-gradient(1200px 520px at 72% -12%,rgba(236,127,163,.22),transparent),var(--bg);padding:84px 0 70px;text-align:center}
.hero h1{font-size:clamp(34px,6vw,58px);margin:0 0 18px}
.lead{font-size:clamp(17px,2.2vw,21px);color:var(--muted);max-width:720px;margin:0 auto 30px}
.cta{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.fine{color:var(--muted);font-size:14px;margin-top:18px}
.fine.center{text-align:center;max-width:640px;margin:22px auto 0}
section{padding:66px 0}
h2{font-size:clamp(26px,4vw,38px);text-align:center;margin:0 0 42px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}
.grid article{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:26px}
.grid h3{margin:0 0 8px;font-size:19px}
.grid p{margin:0;color:var(--muted)}
.pro{display:inline-block;font-size:11px;font-weight:700;color:#4a330a;background:var(--goldgrad);padding:2px 8px;border-radius:6px;vertical-align:middle;margin-left:6px}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:22px;max-width:520px;margin:0 auto}
.plans.three{max-width:980px}
.plan{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:30px;text-align:center}
.plan.featured{border:2px solid var(--gold);box-shadow:0 14px 40px rgba(178,58,100,.2)}
.plan h3{margin:0 0 6px;font-size:21px}
.price{font-size:38px;font-weight:800;margin:0 0 18px}
.price span{display:block;font-size:14px;font-weight:500;color:var(--muted)}
.plan ul{list-style:none;padding:0;margin:0 0 24px;text-align:left}
.plan li{padding:7px 0 7px 26px;position:relative;color:var(--ink)}
.plan li::before{content:"✓";position:absolute;left:0;color:var(--gold);font-weight:800}
.download{text-align:center;background:var(--grad);color:#fff}
.download h2,.download p{color:#fff}
.download .fine{color:rgba(255,255,255,.82)}
.faq{max-width:760px}
details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 20px;margin-bottom:12px}
summary{font-weight:600;cursor:pointer}
details p{color:var(--muted);margin:12px 0 0}
footer{text-align:center;padding:40px 24px;color:var(--muted);font-size:14px;border-top:1px solid var(--line)}
@media(max-width:620px){.nav nav a:not(.btn){display:none}}
section.wrap{padding-top:66px;padding-bottom:66px}
/* gradient theme */
body{background:linear-gradient(180deg,#fbeef2,#fcf6f3 40%,#fbf3e6)}
.nav{max-width:none;padding:18px max(24px,calc((100% - 992px)/2));background:linear-gradient(120deg,#3a0d1e,#5c1a33 55%,#b23a64)}
.nav .brand,.nav nav a{color:#fff}.nav .btn.ghost{border-color:rgba(255,255,255,.5);color:#fff}
.hero{color:#fff;background:radial-gradient(700px 360px at 85% 10%,rgba(240,200,106,.35),transparent 60%),radial-gradient(700px 360px at 10% 90%,rgba(236,127,163,.45),transparent 60%),linear-gradient(130deg,#3a0d1e,#5c1a33 55%,#b23a64)}
.hero .lead,.hero .fine{color:rgba(255,255,255,.85)}
.hero .btn.ghost{border-color:rgba(255,255,255,.5);color:#fff}
footer{background:linear-gradient(120deg,#3a0d1e,#5c1a33);color:rgba(255,255,255,.8)}footer a{color:#f0c86a}
/* nền gradient toàn trang */
body{background:linear-gradient(160deg,#25060f 0%,#3a0d1e 25%,#5c1a33 60%,#b23a64 100%) fixed}
.nav{background:rgba(0,0,0,.18);backdrop-filter:blur(10px)}
.hero{background:radial-gradient(700px 360px at 85% 10%,rgba(240,200,106,.28),transparent 60%)}
h2{color:#fff}
section > .fine,.fine.center,.download p,.download .fine{color:rgba(255,255,255,.85)}
.faq details{background:rgba(255,255,255,.95);border-radius:12px;padding:6px 16px;margin-bottom:10px}
footer{background:rgba(0,0,0,.25);border:0}