:root{
  --cream:#F1EBDC; --ink:#2a2620; --muted:#857c6c;
  --bronze:#8A6A22; --bronze-2:#6f531a; --ring:#e3d8bf; --white:#fffdf8;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"Be Vietnam Pro",system-ui,sans-serif;color:var(--ink);background:var(--cream);line-height:1.55;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{max-width:1160px;margin:0 auto;padding:0 24px}
section{padding:88px 0}
h1,h2,h3{font-weight:800;line-height:1.16}
.eyebrow{font-size:13.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--bronze);color:var(--white);padding:10px 18px;border-radius:0 0 10px 0;z-index:100}
.skip-link:focus{left:0}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(12px);transition:opacity .45s ease, transform .45s ease}
.reveal.in{opacity:1;transform:none}

/* Header */
header{position:sticky;top:0;z-index:30;background:rgba(241,235,220,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--ring)}
header .bar{display:flex;align-items:center;justify-content:space-between;height:78px}
.logo{font-size:23px;font-weight:800;color:var(--bronze);letter-spacing:.02em;text-decoration:none}
nav.desktop-nav{display:none;align-items:center;gap:36px}
nav.desktop-nav a{font-size:15px;font-weight:600;text-decoration:none;color:var(--ink);position:relative;padding:4px 0}
nav.desktop-nav a:hover,nav.desktop-nav a.active{color:var(--bronze-2)}
.hdr-right{display:flex;align-items:center;gap:14px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 24px;border-radius:999px;font-weight:700;font-size:15px;text-decoration:none;white-space:nowrap;border:2px solid transparent;cursor:pointer}
.btn-primary{background:var(--bronze);color:var(--white)}
.btn-primary:hover{background:var(--bronze-2)}
.btn-outline{border-color:var(--bronze);color:var(--bronze-2);background:transparent}
.btn-outline:hover{background:var(--bronze);color:var(--white)}
.btn-sm{padding:10px 18px;font-size:14px}
.hdr-cta{display:none}
.menu-toggle{display:flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;background:none;border:1px solid var(--ring);border-radius:10px;cursor:pointer}
.menu-toggle span{display:block;height:2px;background:var(--ink);margin:0 9px;transition:transform .2s ease, opacity .2s ease}
.menu-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-toggle.open span:nth-child(2){opacity:0}
.menu-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.mobile-nav{display:none;flex-direction:column;gap:2px;border-top:1px solid var(--ring);background:var(--cream)}
.mobile-nav.open{display:flex}
.mobile-nav a{padding:16px 24px;font-weight:600;font-size:16px;text-decoration:none;color:var(--ink);border-bottom:1px solid var(--ring)}
.mobile-nav .btn{margin:16px 24px}
@media (min-width:960px){
  nav.desktop-nav{display:flex}
  .hdr-cta{display:inline-flex}
  .menu-toggle{display:none}
}

/* Hero */
.hero{position:relative;padding:80px 0 60px;overflow:hidden}
.hero-watermark{position:absolute;top:-40px;right:-60px;font-size:280px;font-weight:800;color:var(--bronze);opacity:.05;white-space:nowrap;pointer-events:none;line-height:1}
.hero .wrap{position:relative;display:grid;grid-template-columns:1fr;gap:48px}
.hero h1{font-size:42px;max-width:640px}
.hero p.lead{font-size:18px;color:var(--ink);max-width:560px;margin-top:20px}
.slogan-chip{display:inline-block;border:2px solid var(--ring);background:var(--white);border-radius:999px;padding:10px 22px;font-weight:700;color:var(--bronze-2);font-size:14.5px;margin-top:24px}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px}
.hero-plate{background:var(--white);border:1px solid var(--ring);border-radius:24px;padding:40px 32px;text-align:center}
.hero-plate .wm{font-size:34px;font-weight:800;color:var(--bronze)}
.hero-plate .bar{width:56px;height:4px;background:var(--bronze);border-radius:999px;margin:18px auto}
.hero-plate .slog{font-size:15px;font-weight:700;color:var(--bronze-2);margin-bottom:28px}
.hero-plate .certs{display:flex;flex-wrap:wrap;gap:10px;justify-content:center}
.hero-plate .cert-chip{border:1.5px solid var(--ring);border-radius:999px;padding:9px 16px;font-size:13px;font-weight:600;color:var(--ink)}
@media (min-width:860px){
  .hero h1{font-size:58px}
  .hero p.lead{font-size:20px}
  .hero .wrap{grid-template-columns:1.15fr .85fr;align-items:center}
  .hero-watermark{font-size:340px}
}

/* Stats */
.stats{padding:0 0 80px}
.stats .grid4{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
@media (min-width:760px){ .stats .grid4{grid-template-columns:repeat(4,1fr)} }
.stat{background:var(--white);border:1px solid var(--ring);border-radius:18px;padding:26px 20px;text-align:center}
.stat .num{font-size:34px;font-weight:800;color:var(--bronze)}
.stat .lbl{font-size:13.5px;color:var(--muted);font-weight:600;margin-top:6px}

/* Certs detail */
.certs-detail{background:var(--white);border-top:1px solid var(--ring);border-bottom:1px solid var(--ring)}
.certs-detail h2{font-size:32px;margin:10px 0 40px}
.cgrid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:760px){ .cgrid{grid-template-columns:1fr 1fr} }
.citem{border:1px solid var(--ring);border-radius:16px;padding:22px 24px;background:var(--cream)}
.citem .name{font-weight:700;color:var(--bronze-2);font-size:17px;margin-bottom:4px}
.citem .meta{font-size:13.5px;color:var(--muted)}

/* About */
.about .wrap{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:860px){ .about .wrap{grid-template-columns:1.1fr .9fr} }
.about h2{font-size:34px;margin:10px 0 18px}
.about p{font-size:16.5px;color:var(--ink);margin-bottom:14px;max-width:560px}
.about-card{background:var(--white);border:1px solid var(--ring);border-radius:20px;padding:32px}
.about-card dl{display:grid;grid-template-columns:auto 1fr;gap:12px 18px;font-size:15px}
.about-card dt{color:var(--muted);font-weight:600;white-space:nowrap}
.about-card dd{color:var(--ink);font-weight:600}
.about-bar{height:10px;background:var(--bronze);border-radius:999px;margin-top:24px;max-width:80px}

/* Products */
.products{padding-top:88px}
.products h2{font-size:34px;margin:10px 0 8px}
.products > .wrap > p.sub{color:var(--muted);font-size:16px;max-width:640px;margin-bottom:40px}
.grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:700px){ .grid{grid-template-columns:1fr 1fr} }
@media (min-width:1020px){ .grid{grid-template-columns:1fr 1fr 1fr} }
.card{border:1px solid var(--ring);border-radius:18px;padding:26px;background:var(--white);transition:transform .25s ease, border-color .25s ease;display:flex;flex-direction:column}
.card:hover{transform:translateY(-5px);border-color:var(--bronze)}
.card h3{font-size:20px;color:var(--ink);margin-bottom:10px}
.card .for{display:inline-block;font-size:12.5px;color:var(--bronze-2);font-weight:700;background:var(--cream);border-radius:999px;padding:6px 14px;margin-bottom:16px;width:fit-content}
.card ul{list-style:none;display:flex;flex-direction:column;gap:8px}
.card li{font-size:14.5px;color:var(--ink);padding-left:16px;position:relative}
.card li::before{content:"";position:absolute;left:0;top:8px;width:6px;height:6px;border-radius:50%;background:var(--bronze)}
.card li b{font-weight:700}
.card .card-link{margin-top:20px;font-weight:700;color:var(--bronze-2);text-decoration:none;font-size:14.5px;display:inline-flex;align-items:center;gap:6px}
.card .card-link:hover{color:var(--bronze)}
.card a.card-cover{text-decoration:none;color:inherit;display:flex;flex-direction:column;height:100%}
.note-tp{margin-top:36px;font-size:14px;color:var(--muted);text-align:center}

/* FAQ */
.faq{background:var(--white);border-top:1px solid var(--ring);border-bottom:1px solid var(--ring)}
.faq h2{font-size:32px;margin:10px 0 12px}
.faq > .wrap > p.sub{color:var(--muted);font-size:16px;margin-bottom:36px}
.faq-list{display:flex;flex-direction:column;gap:12px}
details{border:1px solid var(--ring);border-radius:14px;padding:6px 22px;background:var(--cream)}
details summary{cursor:pointer;list-style:none;font-weight:700;font-size:16px;padding:16px 0;display:flex;justify-content:space-between;align-items:center;gap:16px}
details summary::-webkit-details-marker{display:none}
details summary::after{content:"+";font-size:22px;font-weight:400;color:var(--bronze);flex:none}
details[open] summary::after{content:"\2212"}
details p{font-size:15px;color:var(--ink);padding-bottom:18px;max-width:760px}

/* How-to compact (pha + bảo quản) */
.howto h2{font-size:32px;margin-bottom:28px}
.howto .wrap{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:860px){ .howto .wrap{grid-template-columns:1fr 1fr} }
.steps{display:flex;flex-direction:column;gap:22px}
.step{display:flex;gap:18px;align-items:flex-start}
.step .n{flex:none;width:38px;height:38px;border-radius:50%;background:var(--bronze);color:var(--white);font-weight:800;display:flex;align-items:center;justify-content:center;font-size:16px}
.step p{font-size:15.5px;color:var(--ink)}
.box{background:var(--white);border:1px solid var(--ring);border-radius:18px;padding:26px}
.box h3{font-size:18px;margin-bottom:12px;color:var(--bronze-2)}
.box ul{padding-left:18px;display:flex;flex-direction:column;gap:8px;font-size:14.5px}

/* Contact */
.contact{background:var(--ink);color:var(--cream)}
.contact .eyebrow{color:#cbbf9e}
.contact h2{font-size:34px;margin:10px 0 18px;color:var(--white)}
.contact p.lead{color:#d9d0bd;font-size:16.5px;max-width:560px;margin-bottom:30px}
.contact-grid{display:grid;grid-template-columns:1fr;gap:16px}
@media (min-width:760px){ .contact-grid{grid-template-columns:1fr 1fr} }
.contact-item{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:22px}
.contact-item .k{font-size:12.5px;color:#cbbf9e;font-weight:700;text-transform:uppercase;letter-spacing:.07em;margin-bottom:8px}
.contact-item .v{font-size:17px;font-weight:700;color:var(--white);text-decoration:none}
.contact-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.contact .btn-primary{background:var(--bronze)}
.contact .btn-outline{border-color:#cbbf9e;color:var(--white)}
.contact .btn-outline:hover{background:rgba(255,255,255,.1)}

/* Footer */
footer{padding:56px 0 32px;background:var(--ink);border-top:1px solid rgba(255,255,255,.12);color:#cbbf9e}
.foot-grid{display:grid;grid-template-columns:1fr;gap:32px}
@media (min-width:760px){ .foot-grid{grid-template-columns:1.3fr 1fr 1fr} }
footer .fwm{color:var(--cream);font-weight:800;font-size:20px;margin-bottom:12px;text-decoration:none;display:inline-block}
footer .fcol h4{color:var(--cream);font-size:14px;font-weight:700;margin-bottom:14px;text-transform:uppercase;letter-spacing:.06em}
footer .fcol a{display:block;color:#cbbf9e;text-decoration:none;font-size:14.5px;margin-bottom:10px}
footer .fcol a:hover{color:var(--cream)}
footer p{font-size:13.5px;margin-bottom:8px;max-width:560px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding-top:24px;font-size:13px}

/* ===== Shop / product pages ===== */
.breadcrumb{padding:20px 0 0;font-size:13.5px;color:var(--muted)}
.breadcrumb a{color:var(--bronze-2);text-decoration:none;font-weight:600}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{margin:0 6px}

/* shop filter */
.shop-filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:36px}
.filter-chip{border:1.5px solid var(--ring);background:var(--white);border-radius:999px;padding:9px 18px;font-size:13.5px;font-weight:700;color:var(--ink);cursor:pointer}
.filter-chip.active,.filter-chip:hover{border-color:var(--bronze);color:var(--bronze-2);background:var(--cream)}

/* product detail hero */
.p-hero{padding:44px 0 20px}
.p-hero .wrap{display:grid;grid-template-columns:1fr;gap:40px}
@media (min-width:900px){ .p-hero .wrap{grid-template-columns:1.05fr .95fr;align-items:center} }
.p-hero .for{display:inline-block;font-size:12.5px;color:var(--bronze-2);font-weight:700;background:var(--white);border:1px solid var(--ring);border-radius:999px;padding:7px 16px;margin-bottom:16px}
.p-hero h1{font-size:36px;color:var(--ink)}
@media (min-width:860px){ .p-hero h1{font-size:46px} }
.p-hero .tagline{font-size:17px;color:var(--muted);margin-top:14px;max-width:520px}
.p-hero .highlights{display:flex;flex-direction:column;gap:10px;margin-top:24px}
.p-hero .highlights li{list-style:none;font-size:15px;padding-left:22px;position:relative}
.p-hero .highlights li::before{content:"";position:absolute;left:0;top:8px;width:8px;height:8px;border-radius:50%;background:var(--bronze)}
.p-hero .highlights b{font-weight:800;color:var(--bronze-2)}
.p-visual{background:var(--white);border:1px solid var(--ring);border-radius:24px;padding:36px 30px;text-align:center}
.p-visual .can{width:150px;height:190px;margin:0 auto 18px;border-radius:14px 14px 26px 26px;background:linear-gradient(180deg,var(--cream),var(--white));border:2px solid var(--bronze);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px}
.p-visual .can .wm{font-size:15px;font-weight:800;color:var(--bronze)}
.p-visual .can .pname{font-size:12px;font-weight:700;color:var(--bronze-2);padding:0 10px;text-align:center;line-height:1.25}
.p-visual .weight{font-size:13px;color:var(--muted);font-weight:600}
.p-visual .order-box{margin-top:24px;display:flex;flex-direction:column;gap:12px}
.p-visual .order-note{font-size:12.5px;color:var(--muted)}

/* nutrition table */
.nutri{background:var(--white)}
.nutri h2{font-size:28px;margin:10px 0 6px}
.nutri .sub{color:var(--muted);font-size:14.5px;margin-bottom:28px}
table.ntable{width:100%;border-collapse:collapse;background:var(--white);border:1px solid var(--ring);border-radius:14px;overflow:hidden}
table.ntable th,table.ntable td{padding:14px 18px;text-align:left;font-size:14.5px;border-bottom:1px solid var(--ring)}
table.ntable th{background:var(--cream);color:var(--bronze-2);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:.04em}
table.ntable tr:last-child td{border-bottom:none}
table.ntable td.val{font-weight:700;text-align:right;white-space:nowrap}
.ntable-wrap{overflow-x:auto}
.nutri-note{font-size:13px;color:var(--muted);margin-top:14px}

/* who / why section */
.why-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:760px){ .why-grid{grid-template-columns:1fr 1fr} }
.why-item{border:1px solid var(--ring);border-radius:16px;padding:22px 24px;background:var(--cream)}
.why-item h3{font-size:16px;color:var(--bronze-2);margin-bottom:8px}
.why-item p{font-size:14.5px;color:var(--ink)}

/* related products */
.related{background:var(--white);border-top:1px solid var(--ring)}
.related h2{font-size:26px;margin:10px 0 24px}

/* order sticky CTA (mobile) */
.order-sticky{position:fixed;left:0;right:0;bottom:0;z-index:40;background:var(--white);border-top:1px solid var(--ring);padding:12px 16px;display:flex;gap:10px;box-shadow:0 -6px 18px rgba(0,0,0,.06)}
.order-sticky .btn{flex:1}
@media (min-width:760px){ .order-sticky{display:none} }
body.has-sticky{padding-bottom:76px}