/* Màu thương hiệu: --brand lấy từ logo WAI (#5f9f32). Đổi 1 dòng này để đổi màu toàn site. */
:root{--brand:#5f9f32;--m:var(--brand);--md:#4a8424;--y:#ffe08a;--bg:#f4f9ef;--ink:#2d3b36}
*{box-sizing:border-box}body{margin:0;font-family:Nunito,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
img{max-width:100%;height:auto;display:block}a{color:var(--md)}.wrap{max-width:1100px;margin:auto;padding:0 18px}
header{position:sticky;top:0;background:#fffe;backdrop-filter:blur(8px);z-index:9;box-shadow:0 2px 12px #0001}
.hd{display:flex;align-items:center;justify-content:space-between;height:62px}.logo{font-weight:900;font-size:30px;color:var(--md);text-decoration:none;letter-spacing:-1px}.logo span{color:var(--y)}
nav{display:flex;gap:4px}nav a{text-decoration:none;color:var(--ink);font-weight:700;padding:8px 12px;border-radius:20px}nav a.on,nav a:hover{background:#eaf5e0;color:var(--md)}
.mb{display:none;border:0;background:#eaf5e0;font-size:22px;border-radius:12px;padding:4px 12px;color:var(--md)}
@media(max-width:760px){.mb{display:block}nav{display:none;position:absolute;top:62px;left:0;right:0;background:#fff;flex-direction:column;padding:10px 18px;box-shadow:0 8px 16px #0001}.open nav{display:flex}}
.hero{background:linear-gradient(135deg,#eaf5e0,#fbf8ec);padding:40px 0}.hg{display:grid;gap:26px;align-items:center}@media(min-width:800px){.hg{grid-template-columns:1.1fr .9fr}}
h1{font-size:clamp(30px,6vw,48px);line-height:1.15;margin:12px 0;font-weight:900}h1 em{font-style:normal;color:var(--md);background:linear-gradient(transparent 60%,var(--y) 60%)}
.hi{border-radius:28px;box-shadow:0 16px 40px #4f8f2233}.tag{display:inline-block;background:var(--y);padding:4px 14px;border-radius:20px;font-weight:800;font-size:13px}
.btns{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}.btn{display:inline-block;background:var(--md);color:#fff;text-decoration:none;font-weight:800;padding:13px 24px;border-radius:30px;border:0;font-size:16px;cursor:pointer;font-family:inherit}.btn.w{background:#fff;color:var(--md);border:2px solid var(--m)}.btn.z{background:#0068ff}
.t{text-align:center;font-size:30px;font-weight:900;margin:44px 0 22px}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}@media(min-width:800px){.grid{grid-template-columns:repeat(4,1fr)}}
.card{background:#fff;border-radius:22px;overflow:hidden;box-shadow:0 6px 20px #0000000f;text-decoration:none;color:var(--ink);transition:.2s}.card:hover{transform:translateY(-4px)}.card h3{margin:10px 12px 0;font-size:16px}.card p{margin:2px 12px 14px;font-size:13px;color:#6a7a74}
.soft{background:var(--bg);padding:10px 0 40px;margin-top:40px}.feat{display:grid;grid-template-columns:1fr;gap:14px}@media(min-width:560px){.feat{grid-template-columns:repeat(2,1fr)}}@media(min-width:900px){.feat{grid-template-columns:repeat(4,1fr)}}.feat div{background:#fff;border-radius:20px;padding:20px;box-shadow:0 4px 14px #0000000a}.feat i{font-style:normal;font-size:30px}.feat h3{margin:6px 0}.feat p{margin:0;color:#6a7a74}
.pg{padding:36px 18px 50px}.narrow{max-width:640px}.note{background:#fbf8ec;padding:12px 16px;border-radius:14px}
.pd{display:grid;gap:20px;margin:34px 0;padding:20px;border-radius:26px;background:var(--bg);scroll-margin-top:80px}@media(min-width:800px){.pd{grid-template-columns:1fr 1fr}}
.gal{display:grid;grid-template-columns:1fr 1fr;gap:8px}.gal img{border-radius:14px}.gal img:first-child{grid-column:span 2}.pd h2{margin:0;font-size:26px}.sub{color:var(--md);font-weight:800;margin:4px 0}.pd li{margin:4px 0}
.fm{display:grid;gap:12px;background:var(--bg);padding:22px;border-radius:24px}.fm label{font-weight:700;display:grid;gap:4px}.fm input,.fm select,.fm textarea{font:inherit;padding:12px 14px;border:2px solid #d8eac8;border-radius:14px;background:#fff}.fm input:focus{outline:0;border-color:var(--m)}.s{font-size:13px;color:#7a8a84}
.cl{display:grid;gap:12px}.cl a{display:grid;grid-template-columns:44px 1fr;align-items:center;background:var(--bg);padding:16px;border-radius:18px;text-decoration:none;color:var(--ink);font-size:24px}.cl b{font-size:16px}.cl span{grid-column:2;font-size:15px;color:#6a7a74}
.cta{background:linear-gradient(135deg,var(--m),var(--md));color:#fff;text-align:center;padding:44px 0}.cta h2{font-size:28px;margin:0}.cta .btns{justify-content:center}
footer{background:#26331f;color:#cfe;padding:30px 0 90px;font-size:14px}
.fz{position:fixed;right:16px;bottom:16px;width:62px;height:62px;border-radius:50%;background:#0068ff;color:#fff;font-weight:900;display:grid;place-items:center;text-decoration:none;box-shadow:0 8px 20px #0068ff66;z-index:10;animation:p 2s infinite}@keyframes p{50%{box-shadow:0 0 0 12px #0068ff22}}

.logo img{display:block;height:40px;width:auto}footer .logo img{height:34px;margin-bottom:8px}

.lead{text-align:center;max-width:720px;margin:-8px auto 24px;color:#5d6d67}.lead.l{text-align:left;margin:0 0 20px;max-width:none;font-size:18px}
.card img{aspect-ratio:1;object-fit:contain;background:#fff}.card span{display:block;margin:0 12px 14px;font-weight:800;color:var(--md);font-size:14px}
.hi{background:#fff}.chk{list-style:none;padding:0;margin:14px 0}.chk li{padding-left:28px;position:relative;margin:6px 0}.chk li:before{content:"✓";position:absolute;left:0;top:0;width:20px;height:20px;border-radius:50%;background:var(--m);color:#fff;font-size:12px;display:grid;place-items:center;font-weight:900}
.hero .chk{display:flex;flex-wrap:wrap;gap:4px 18px;font-weight:700;font-size:14px}
.steps{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;counter-reset:s}.steps li{counter-increment:s;background:var(--bg);border-radius:20px;padding:22px 20px 18px}.steps li:before{content:counter(s);display:grid;place-items:center;width:40px;height:40px;border-radius:50%;background:var(--md);color:#fff;font-weight:900;font-size:20px;margin-bottom:8px}.steps p{margin:4px 0 0;color:#6a7a74}
.btns.c{justify-content:center;margin:24px 0}.btn.y{background:var(--y);color:var(--ink)}
.band{margin:44px 0 0;background:linear-gradient(135deg,#eaf5e0,#fbf8ec);border-radius:26px;padding:26px;display:flex;gap:18px;align-items:center;justify-content:space-between;flex-wrap:wrap}.band h2{margin:0 0 6px}.band p{margin:0;color:#5d6d67}
.faq{max-width:820px;margin:0 auto 40px}.faq details{background:#fff;border:2px solid #e3efd9;border-radius:16px;margin:10px 0;padding:14px 18px}.faq summary{font-weight:800;cursor:pointer}.faq p{margin:8px 0 0;color:#5d6d67}
.pd{background:#fff;border:2px solid #e3efd9}.gal{grid-template-columns:1fr 1fr;align-content:start}.gal img{border-radius:16px;border:1px solid #eee;aspect-ratio:1;object-fit:contain;background:#fff}.gal img:first-child{grid-column:span 2}.pd h3{margin:16px 0 4px}
.spec{width:100%;border-collapse:collapse;margin:12px 0}.spec th,.spec td{text-align:left;padding:8px 10px;border-bottom:1px solid #e3efd9;vertical-align:top}.spec th{width:110px;color:var(--md)}
.pnav{display:flex;flex-wrap:wrap;gap:8px}.pnav a{background:#eaf5e0;padding:8px 14px;border-radius:20px;text-decoration:none;font-weight:700}
.two{display:grid;gap:24px;align-items:center}@media(min-width:800px){.two{grid-template-columns:1.2fr 1fr}}.rimg{border-radius:24px;box-shadow:0 12px 30px #0001}
nav a.nb{background:var(--md);color:#fff}nav a.nb:hover{background:var(--m);color:#fff}
.fg{display:grid;gap:20px}@media(min-width:760px){.fg{grid-template-columns:1.4fr 1fr 1fr}}.fg a{display:block;color:#cfe;text-decoration:none;margin:4px 0}.fg b{color:#fff}footer .s{color:#9ab;padding-top:16px}