:root{
  --green-900:#0f2a20;
  --green-800:#173d2f;
  --green-600:#2f7a5a;
  --green-100:#e6efe9;
  --gold:#d4a64a;
  --gold-dark:#a87d27;
  --ink:#1b2621;
  --muted:#5b6b63;
  --paper:#f7f5ef;
  --line:#dfe4de;
  --radius:14px;
  --wrap:1120px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:76px}
body{margin:0;font-family:"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--paper);line-height:1.65;font-size:16px;-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:var(--green-600)}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 20px}

/* Header */
.top{position:sticky;top:0;z-index:20;background:rgba(247,245,239,.94);backdrop-filter:saturate(1.4) blur(8px);border-bottom:1px solid var(--line)}
.top .wrap{display:flex;align-items:center;gap:24px;height:68px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);flex-shrink:0}
.brand img{width:40px;height:40px}
.brand b{display:block;font-size:15px;letter-spacing:.04em;line-height:1.2}
.brand small{display:block;font-size:11px;color:var(--muted);letter-spacing:.08em}
.menu{display:flex;gap:22px;margin-left:auto}
.menu a{text-decoration:none;color:var(--ink);font-size:15px;font-weight:500}
.menu a:hover{color:var(--green-600)}
.lang{display:flex;border:1px solid var(--line);border-radius:999px;overflow:hidden;flex-shrink:0}
.lang a,.lang span{padding:4px 11px;font-size:13px;font-weight:600;text-decoration:none;color:var(--muted)}
.lang span{background:var(--green-800);color:#fff}

/* Hero */
.hero{position:relative;overflow:hidden;background:radial-gradient(120% 140% at 85% 10%,#24604a 0%,var(--green-800) 45%,var(--green-900) 100%);color:#fff}
.hero .wrap{position:relative;z-index:1;padding-top:88px;padding-bottom:96px}
.hero .eyebrow{display:inline-block;font-size:13px;letter-spacing:.16em;color:var(--gold);font-weight:600;margin-bottom:14px}
.hero h1{font-size:clamp(30px,5vw,52px);line-height:1.15;margin:0 0 18px;max-width:14em;font-weight:700}
.hero p{font-size:clamp(16px,2vw,19px);max-width:36em;color:#d6e3dc;margin:0 0 32px}
.hero .ridge{position:absolute;right:-40px;bottom:0;width:min(720px,80%);opacity:.9;pointer-events:none}
.btns{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:999px;font-weight:600;text-decoration:none;font-size:15px;transition:transform .15s ease,background .15s ease}
.btn:hover{transform:translateY(-1px)}
.btn-gold{background:var(--gold);color:var(--green-900)}
.btn-gold:hover{background:#e0b65c}
.btn-ghost{border:1px solid rgba(255,255,255,.45);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.08)}
.btn svg{width:18px;height:18px}

/* Facts */
.facts{position:relative;z-index:2;margin-top:-44px}
.facts ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);background:#fff;border-radius:var(--radius);box-shadow:0 10px 30px rgba(15,42,32,.10);overflow:hidden}
.facts li{padding:22px 26px;border-left:1px solid var(--line)}
.facts li:first-child{border-left:0}
.facts small{display:block;color:var(--muted);font-size:13px;margin-bottom:2px}
.facts strong{font-size:18px;color:var(--green-800)}

/* Sections */
section{padding:84px 0}
.kicker{font-size:13px;letter-spacing:.16em;color:var(--gold-dark);font-weight:700;text-transform:uppercase;margin:0 0 10px}
h2{font-size:clamp(24px,3.2vw,34px);line-height:1.25;margin:0 0 18px;color:var(--green-900)}
.lead{font-size:17px;color:var(--muted);max-width:44em}
.about{display:grid;grid-template-columns:1.2fr 1fr;gap:56px;align-items:center}
.about-art{background:var(--green-100);border-radius:var(--radius);padding:36px}

/* Services */
.services{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
.card{border:1px solid var(--line);border-radius:var(--radius);padding:28px;background:var(--paper);transition:border-color .2s ease,box-shadow .2s ease}
.card:hover{border-color:var(--green-600);box-shadow:0 8px 24px rgba(15,42,32,.08)}
.card .ico{width:52px;height:52px;border-radius:12px;background:var(--green-800);display:grid;place-items:center;margin-bottom:18px}
.card .ico svg{width:28px;height:28px}
.card h3{margin:0 0 8px;font-size:19px;color:var(--green-900)}
.card p{margin:0;color:var(--muted)}

/* Company info */
.info{display:grid;grid-template-columns:1fr 1.4fr;gap:56px}
table.legal{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:0 1px 0 var(--line)}
table.legal th,table.legal td{padding:14px 18px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);font-size:15px}
table.legal tr:last-child th,table.legal tr:last-child td{border-bottom:0}
table.legal th{width:38%;color:var(--muted);font-weight:500;background:#fbfaf6}
table.legal td{font-weight:600}

/* Contact */
.contact{background:var(--green-900);color:#e5eee9}
.contact h2{color:#fff}
.contact .kicker{color:var(--gold)}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:40px;align-items:stretch}
.clist{list-style:none;margin:0;padding:0}
.clist li{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid rgba(255,255,255,.1)}
.clist li:last-child{border-bottom:0}
.clist svg{width:22px;height:22px;flex-shrink:0;margin-top:3px}
.clist small{display:block;color:#9fb6aa;font-size:13px}
.clist a{color:#fff;text-decoration:none;font-weight:600}
.clist a:hover{color:var(--gold)}
.map{border-radius:var(--radius);overflow:hidden;min-height:320px;background:#24473a}
.map iframe{width:100%;height:100%;min-height:320px;border:0;display:block}

footer{background:#0a1f17;color:#8fa79b;font-size:14px;padding:22px 0}
footer .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px}

/* Responsive */
@media (max-width:900px){
  .menu{display:none}
  .lang{margin-left:auto}
  .about,.info,.contact-grid{grid-template-columns:1fr;gap:32px}
  .cards{grid-template-columns:1fr}
  .about-art{display:none}
}
@media (max-width:640px){
  .facts ul{grid-template-columns:1fr}
  .facts li{border-left:0;border-top:1px solid var(--line);padding:16px 20px}
  .facts li:first-child{border-top:0}
  section{padding:60px 0}
  .hero .wrap{padding-top:56px;padding-bottom:84px}
  .hero .ridge{opacity:.35}
  .brand small{display:none}
  table.legal th{width:42%}
  table.legal th,table.legal td{padding:12px 14px;font-size:14px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn,.card{transition:none}}

/* Nút Zalo nổi */
.zalo-fab{position:fixed;right:18px;bottom:18px;z-index:30;display:inline-flex;align-items:center;gap:8px;padding:12px 18px 12px 14px;border-radius:999px;background:#0068ff;color:#fff;font-weight:700;font-size:15px;text-decoration:none;box-shadow:0 8px 22px rgba(0,104,255,.35);transition:transform .15s ease,box-shadow .15s ease}
.zalo-fab:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(0,104,255,.42)}
.zalo-fab svg{width:22px;height:22px}
footer{padding-bottom:80px}
@media (max-width:640px){.zalo-fab{right:14px;bottom:14px;padding:10px 14px 10px 12px;font-size:14px}}
@media (prefers-reduced-motion:reduce){.zalo-fab{transition:none}}