/* SENA TRÀ — website giới thiệu chính thức (senatra.vn) */
:root{
  --green:#1f5e3a; --green-dark:#143f27; --green-soft:#e8f2ec;
  --red:#c8102e; --pink:#e2457a; --pink-soft:#fdeef3;
  --ink:#1d2320; --muted:#5b665f; --line:#e3e8e4; --bg:#fbfcfa; --card:#ffffff;
  --radius:16px; --shadow:0 8px 28px rgba(20,63,39,.08);
  --font-head:"Lora",Georgia,serif; --font-body:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font-body);color:var(--ink);background:var(--bg);line-height:1.65;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-family:var(--font-head);line-height:1.2;margin:0 0 .5em;color:var(--green-dark);font-weight:600}
h1{font-size:clamp(2rem,5vw,3.2rem)}
h2{font-size:clamp(1.6rem,3.5vw,2.3rem)}
h3{font-size:1.2rem}
p{margin:0 0 1em}
.wrap{width:min(1120px,100% - 32px);margin-inline:auto}
.eyebrow{display:inline-block;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--pink);font-weight:600;margin-bottom:.6rem}
.muted{color:var(--muted)}
.btn{white-space:nowrap;display:inline-flex;align-items:center;gap:.5rem;padding:.8rem 1.4rem;border-radius:999px;font-weight:600;border:2px solid var(--green);color:var(--green);background:#fff;transition:.2s}
.btn:hover{background:var(--green-soft);text-decoration:none}
.btn.primary{background:var(--green);color:#fff}
.btn.primary:hover{background:var(--green-dark);border-color:var(--green-dark)}
.btn.red{background:var(--red);border-color:var(--red);color:#fff}
.btn.red:hover{filter:brightness(.92)}

/* header */
.topbar{background:var(--green-dark);color:#dbe9df;font-size:.85rem}
.topbar .wrap{display:flex;flex-wrap:wrap;gap:.4rem 1.6rem;justify-content:space-between;padding:.4rem 0}
.topbar a{color:#fff}
header.site{position:sticky;top:0;z-index:50;background:rgba(251,252,250,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.6rem 0}
.brand{display:flex;align-items:center;gap:.7rem;color:var(--green-dark);font-family:var(--font-head);font-weight:700;font-size:1.25rem}
.brand img{width:44px;height:44px;border-radius:10px;flex:0 0 44px}
.brand>span{white-space:nowrap;line-height:1.1}
.brand small{display:block;font-family:var(--font-body);font-size:.72rem;font-weight:500;color:var(--muted);letter-spacing:.06em}
nav.main{display:flex;gap:1.1rem;font-size:.9rem;font-weight:500;white-space:nowrap}
nav.main a{color:var(--ink)}
nav.main a:hover{color:var(--green);text-decoration:none}
.nav-toggle{display:none;background:none;border:1px solid var(--line);border-radius:8px;padding:.4rem .6rem;font-size:1.2rem;cursor:pointer}
@media (max-width:1000px){
  nav.main{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;gap:0;border-bottom:1px solid var(--line);box-shadow:var(--shadow)}
  nav.main a{padding:.85rem 16px;border-top:1px solid var(--line)}
  nav.main.open{display:flex}
  .nav-toggle{display:block}
  .hide-m{display:none}
}

/* hero */
.hero{background:linear-gradient(180deg,#fff 0%,var(--green-soft) 100%);padding:3.5rem 0 3rem}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:2.5rem;align-items:center}
.hero p.lead{font-size:1.15rem;color:var(--muted);max-width:52ch}
.hero .actions{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.5rem 0}
.hero .legal{font-size:.88rem;color:var(--muted);border-left:3px solid var(--pink);padding-left:.8rem}
.hero img{border-radius:var(--radius);box-shadow:var(--shadow)}
@media (max-width:860px){.hero .wrap{grid-template-columns:1fr}.hero{padding:2.2rem 0}}

/* sections */
section{padding:4rem 0}
section.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec-head{max-width:64ch;margin-bottom:2rem}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:2rem;align-items:center}
.grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:1.4rem}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:1.2rem}
@media (max-width:860px){.grid2,.grid3,.grid4{grid-template-columns:1fr}}
@media (min-width:600px) and (max-width:860px){.grid4{grid-template-columns:1fr 1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow)}
.card h3{margin-top:.2rem}
.card .ico{font-size:1.8rem;line-height:1;margin-bottom:.6rem}

/* info table */
table.info{width:100%;border-collapse:collapse;font-size:.97rem}
table.info th,table.info td{text-align:left;vertical-align:top;padding:.7rem .6rem;border-bottom:1px solid var(--line)}
table.info th{width:34%;color:var(--muted);font-weight:500;white-space:nowrap}
table.info td strong{color:var(--green-dark)}
@media (max-width:600px){table.info th,table.info td{display:block;width:100%;padding:.25rem 0}table.info tr{display:block;padding:.6rem 0;border-bottom:1px solid var(--line)}table.info th,table.info td{border:0}}

/* products */
.product{display:grid;grid-template-columns:.9fr 1.1fr;gap:2rem;align-items:start;margin-bottom:2.5rem}
.product img{border-radius:var(--radius);box-shadow:var(--shadow)}
.product .tag{display:inline-block;padding:.25rem .7rem;border-radius:999px;font-size:.78rem;font-weight:600;margin-bottom:.6rem}
.tag.mx{background:var(--pink-soft);color:var(--pink)}
.tag.gl{background:var(--green-soft);color:var(--green)}
.product ul{padding-left:1.1rem;margin:.6rem 0 1rem}
.product li{margin:.25rem 0}
.notice{background:#fff8ec;border:1px solid #f1dcb0;color:#6b4d0a;border-radius:12px;padding:.9rem 1.1rem;font-size:.9rem}
@media (max-width:860px){.product{grid-template-columns:1fr}}

/* certs */
.cert{display:flex;gap:.9rem;align-items:flex-start}
.cert .n{flex:0 0 38px;height:38px;border-radius:50%;background:var(--green);color:#fff;display:grid;place-items:center;font-weight:700}
.cert small{display:block;color:var(--muted);font-size:.85rem}

/* channels */
.channel{display:flex;align-items:center;gap:1rem;padding:1rem 1.2rem;border:1px solid var(--line);border-radius:14px;background:#fff}
.channel .ico{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-weight:700;color:#fff;flex:0 0 44px}
.channel b{display:block}
.channel small{color:var(--muted)}
.ico.fb{background:#1877f2}.ico.tt{background:#111}.ico.sp{background:#ee4d2d}.ico.web{background:var(--green)}

/* contact */
.contact .grid2{align-items:start}
.contact address{font-style:normal;line-height:1.9}
.contact address b{color:var(--green-dark)}
.map{border:0;width:100%;height:340px;border-radius:var(--radius);box-shadow:var(--shadow)}

/* footer */
footer{background:var(--green-dark);color:#cfdcd3;padding:3rem 0 1.5rem;font-size:.92rem}
footer h3{color:#fff;font-size:1.05rem}
footer a{color:#fff}
footer .grid3{gap:2rem}
footer .legal{border-top:1px solid rgba(255,255,255,.14);margin-top:2rem;padding-top:1.2rem;font-size:.82rem;color:#a8bcb0;line-height:1.7}
footer .legal b{color:#fff}

/* policy page */
.policy{max-width:76ch;margin-inline:auto;padding:3rem 0}
.policy h2{font-size:1.35rem;margin-top:2rem}

@media (max-width:1100px){.hide-m{display:none}}