*{box-sizing:border-box}
:root{--p:#00A88F;--pd:#007F6C;--deep:#062E2A;--light:#00C2A0;--hi:#9FF0DF;--bg:#F1FAF7;--card:#fff;--tx:#062E2A;--mut:#4F6E68;--line:#D3EEE7}
@media(prefers-color-scheme:dark){:root{--bg:#04201D;--card:#0A3632;--tx:#E6FBF6;--mut:#9CC7BE;--line:#145049;--pd:#00C2A0}}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;line-height:1.6;color:var(--tx);background:var(--bg)}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
a{color:var(--pd)}
nav{width:100%;display:flex;align-items:center;gap:14px;padding:18px 0;flex-wrap:wrap}
nav .brand{display:flex;align-items:center;gap:10px;font-weight:800;color:inherit;text-decoration:none;font-size:17px}
nav .brand img{width:36px;height:36px;border-radius:10px}
nav .sp{flex:1}
nav a.l{color:var(--mut);text-decoration:none;font-size:14px;font-weight:600}
.langbar button{background:var(--card);border:1px solid var(--line);color:var(--mut);font-size:13px;font-weight:700;padding:5px 14px;cursor:pointer}
.langbar button:first-child{border-radius:999px 0 0 999px}.langbar button:last-child{border-radius:0 999px 999px 0}
.langbar button.on{background:var(--p);border-color:var(--p);color:#fff}
.hero{background:radial-gradient(120% 90% at 85% 10%,rgba(0,194,160,.35) 0%,rgba(0,194,160,0) 60%),linear-gradient(165deg,var(--p) 0%,var(--deep) 78%);color:#fff;border-radius:0 0 36px 36px}
.hero .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:30px;align-items:center;padding-top:8px;padding-bottom:56px}
.hero nav a.l,.hero nav .brand{color:#fff}.hero .langbar button{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.25);color:#fff}
.hero .langbar button.on{background:#fff;color:#007F6C;border-color:#fff}
h1{font-size:46px;line-height:1.12;margin:20px 0 14px;letter-spacing:-.02em}
.lead{font-size:18px;color:#CFF5EC;margin:0 0 26px;max-width:520px}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;font-weight:700;font-size:16px;padding:14px 26px;border-radius:999px;text-decoration:none}
.btn-play{background:#fff;color:#007F6C}.btn-ghost{background:rgba(255,255,255,.14);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-main{background:var(--p);color:#fff}
.scope{max-width:380px;margin:0 auto;width:100%}
.scope svg{width:100%;height:auto;display:block}
.wave{animation:pulse 2.4s ease-in-out infinite}
.wave.w2{animation-delay:.3s}.wave.w3{animation-delay:.6s}
@keyframes pulse{0%,100%{opacity:.35}40%,60%{opacity:1}}
.ap{transform-box:fill-box;transform-origin:50% 100%;animation:breathe 3.6s ease-in-out infinite}
.ap.a2{animation-delay:.6s}.ap.a3{animation-delay:1.2s}.ap.a4{animation-delay:1.8s}
@keyframes breathe{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.86)}}
.chips{display:flex;justify-content:center;gap:10px;margin-top:14px;flex-wrap:wrap}
.chips div{background:rgba(255,255,255,.1);border:1px solid rgba(159,240,223,.28);border-radius:14px;padding:8px 14px;text-align:center;font-size:12px;color:var(--hi)}
.chips b{display:block;color:#fff;font-size:18px}
section{padding:60px 0 0}
h2{font-size:30px;margin:0 0 8px;letter-spacing:-.01em}.sub{color:var(--mut);margin:0 0 28px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 4px 18px rgba(6,46,42,.06)}
.card h3{margin:10px 0 6px;font-size:17px}.card p{margin:0;color:var(--mut);font-size:14.5px}
.ic{width:44px;height:44px;border-radius:14px;background:linear-gradient(135deg,var(--light),var(--deep));color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px}
.steps{counter-reset:s}.steps .card{position:relative;padding-top:52px}
.steps .card:before{counter-increment:s;content:counter(s);position:absolute;top:16px;left:22px;width:28px;height:28px;border-radius:50%;background:var(--p);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px}
.plans{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px;margin-top:16px}
.plan{text-align:center}.plan .pr{font-size:28px;font-weight:800;color:var(--pd)}.plan .per{color:var(--mut);font-size:14px}
.plan.best{border:2px solid var(--p)}
.note{color:var(--mut);font-size:14px;margin-top:12px}
.tbl{overflow-x:auto}
table{width:100%;border-collapse:collapse;background:var(--card);border-radius:18px;overflow:hidden;border:1px solid var(--line)}
td,th{padding:12px 16px;text-align:left;border-bottom:1px solid var(--line);font-size:15px}th{background:var(--deep);color:#fff}
tr:last-child td{border-bottom:0}td.c,th.c{text-align:center}
details{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:16px 20px;margin-bottom:10px}
summary{font-weight:700;cursor:pointer}details p{color:var(--mut);margin:10px 0 0}
.cta{margin-top:60px;background:linear-gradient(160deg,var(--p),var(--deep));color:#fff;border-radius:28px;padding:44px 28px;text-align:center}
.cta h2{color:#fff}.cta p{color:#CFF5EC}
footer{margin-top:50px;padding:26px 0 56px;color:var(--mut);font-size:14px;text-align:center}footer a{margin:0 8px;color:var(--mut)}
.doc{max-width:760px;margin:0 auto;padding:0 20px 40px}.doc h1{font-size:32px;margin:10px 0}.doc h2{font-size:20px;margin:28px 0 6px}.doc code{background:var(--card);padding:1px 6px;border-radius:6px;border:1px solid var(--line)}
.doc .card{margin-top:14px}
.en,.vi{display:none}body.lang-en span.en,body.lang-vi span.vi{display:inline}
body.lang-en div.en,body.lang-vi div.vi,body.lang-en p.en,body.lang-vi p.vi,body.lang-en ul.en,body.lang-vi ul.vi{display:block}
@media(max-width:820px){.hero .wrap{grid-template-columns:1fr}h1{font-size:34px}.scope{max-width:300px}}
@media(prefers-reduced-motion:reduce){.wave,.ap{animation:none;opacity:1}}
.hero nav.wrap{display:flex;padding:18px 20px}