:root{--green:#0b3f31;--green2:#165844;--cream:#f5f3ec;--gold:#b88a42;--ink:#14221d;--muted:#65706b;--line:#dce3df}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background:#fbfcfa;font-family:"Be Vietnam Pro",sans-serif;line-height:1.65}
a{color:inherit;text-decoration:none}
.site-header{height:84px;padding:0 max(5vw,24px);display:flex;align-items:center;gap:42px;position:absolute;z-index:5;width:100%}
.brand{font-family:Lora,serif;font-size:27px;font-weight:700;letter-spacing:.04em;color:var(--green)}
nav{display:flex;gap:30px;margin-left:auto;font-size:13px}
nav a{position:relative}
nav a:after{content:"";position:absolute;left:0;right:100%;bottom:-4px;height:1px;background:var(--green);transition:.25s}
nav a:hover:after{right:0}
.button{display:inline-flex;align-items:center;gap:20px;border-radius:999px;padding:13px 23px;background:var(--green);color:white;font-size:13px;font-weight:500;transition:.25s}
.button:hover{background:var(--green2);transform:translateY(-2px)}
.button-small{padding:10px 18px}
.menu-toggle{display:none;border:0;background:none;font-size:24px}
.hero{min-height:720px;display:grid;grid-template-columns:48% 52%;overflow:hidden;background:linear-gradient(115deg,#f8faf7 0,#eff5f1 50%,#ccdcd2 100%)}
.hero-copy{padding:170px 5vw 90px 9vw;z-index:2}
.eyebrow{text-transform:uppercase;letter-spacing:.18em;font-size:10px;font-weight:600;color:var(--green2);margin:0 0 16px}
.hero h1,.section-pad h2{font-family:Lora,serif;line-height:1.08}
.hero h1{font-size:clamp(42px,4.7vw,70px);margin:0 0 25px;font-weight:600}
.hero h1 em{font-style:normal;color:var(--green)}
.lead{font-size:18px;max-width:520px}
.hero-actions{display:flex;align-items:center;gap:26px;margin-top:35px}
.text-link{font-size:12px;font-weight:500}
.hero-visual{position:relative;display:flex;align-items:flex-end;justify-content:center;background:radial-gradient(circle at 55% 30%,#f0f3ed 0,transparent 38%),linear-gradient(160deg,#d8e2dc,#aec4b7)}
.hero-visual:before{content:"";position:absolute;inset:18% 7% 0;border:1px solid rgba(255,255,255,.55);border-bottom:0}
.hero-visual img{position:relative;height:88%;max-width:100%;object-fit:contain;object-position:bottom;filter:saturate(.82) contrast(1.03)}
.hero-word{position:absolute;right:-25px;top:88px;writing-mode:vertical-rl;font-family:Lora,serif;font-size:100px;color:rgba(11,63,49,.06);font-weight:700}
.hero-note{position:absolute;right:6%;bottom:45px;background:rgba(255,255,255,.9);padding:16px 20px;font-size:11px;border-left:3px solid var(--gold)}
.section-pad{padding:90px max(5vw,42px)}
.section-heading{display:flex;align-items:end;justify-content:space-between;margin-bottom:30px}
.section-pad h2{font-size:clamp(30px,3vw,46px);margin:0;color:var(--green)}
.metric-grid,.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.metric-grid article{padding:32px;text-align:center;border:1px solid var(--line);border-radius:12px;background:white}
.metric-icon{display:block;color:var(--green);font-size:31px}
.metric-icon.gold{color:var(--gold)}
.metric-grid strong{display:block;font:700 34px Lora,serif;color:var(--green);margin:8px}
.metric-grid p{font-size:12px;max-width:230px;margin:auto;color:var(--muted)}
.about{padding-left:0;display:grid;grid-template-columns:50% 50%;background:var(--cream)}
.about-art{min-height:520px;position:relative;background:linear-gradient(90deg,rgba(11,63,49,.88),rgba(11,63,49,.15)),url('../outputs/landing-page-le-quang-ninh-draft.png') center 34%/cover}
.about-art span{position:absolute;top:45px;left:10%;color:white;letter-spacing:.12em;font-weight:600}
.about-copy{padding:55px 8vw}
.about-copy>p:not(.eyebrow){color:var(--muted)}
blockquote{margin:35px 0 0;padding:25px;border-left:3px solid var(--gold);background:white;font:italic 17px Lora,serif;color:var(--green)}
.field-card{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:white;transition:.25s}
.field-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(11,63,49,.1)}
.card-image{height:200px;position:relative;background-size:cover;background-position:center}
.card-image:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(0,0,0,.52),transparent)}
.card-image span{position:absolute;z-index:1;bottom:15px;left:18px;font:600 27px Lora;color:white}
.fields .card-grid{grid-template-columns:repeat(3,1fr)}
.quality .card-image{background-image:url('assets/kiem-soat-chat-luong.jpg');background-position:center 62%}
.byproduct .card-image{background-image:url('assets/phu-pham-cong-nghiep.jpg');background-position:center 64%}
.logistics .card-image{background-image:url('assets/logistics-duong-thuy.jpg');background-position:center 62%}
.rdf .card-image{background-image:url('assets/nhien-lieu-rdf.jpg');background-position:center 60%}
.card-body{padding:22px;position:relative}
.card-body h3{font:600 19px Lora,serif;margin:0}
.card-body p{font-size:12px;color:var(--muted);padding-right:30px}
.card-body a{position:absolute;right:18px;bottom:21px;background:#edf3ef;width:34px;height:34px;border-radius:50%;display:grid;place-items:center}
.projects{background:var(--green);color:white}
.projects h2,.projects .eyebrow{color:white}
.project-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:rgba(255,255,255,.2);margin-top:35px}
.project-grid article{background:var(--green);padding:32px 26px;min-height:250px}
.project-grid b{font:600 34px Lora;color:var(--gold)}
.project-grid h3{font:600 18px Lora;margin-top:45px}
.project-grid p{font-size:12px;color:#bfd0c9}
.project-next{max-width:850px;margin:34px 0 0;color:#d6e3dd;font-size:14px}
.principles{display:grid;grid-template-columns:30% 70%;align-items:end}
.principle-list{display:grid;grid-template-columns:repeat(3,1fr)}
.principle-list span{display:flex;flex-direction:column;padding:14px 25px;border-left:1px solid var(--line);font:600 16px Lora}
.principle-list b{font:500 11px "Be Vietnam Pro";color:var(--gold);margin-bottom:12px}
.principle-list small{font:400 10px "Be Vietnam Pro";color:var(--muted);margin-top:7px}
.contact{background:#dce9e2;display:flex;align-items:center;justify-content:space-between}
.contact-links{display:flex;flex-direction:column;gap:10px;font-size:18px}
.contact-links a:hover{color:var(--green2)}
.contact-copy{max-width:680px;color:#486259;font-size:13px;margin:22px 0 0}
footer{background:#082f25;color:#afc4bb;padding:34px max(5vw,42px);display:flex;align-items:center;gap:30px;font-size:10px}
footer .brand{color:white}
footer p:last-child{margin-left:auto}
.reveal{opacity:0;transform:translateY(18px);transition:.75s ease}
.reveal.visible{opacity:1;transform:none}
.activities{background:#fff}
.activities .section-heading{gap:40px}
.section-intro{max-width:470px;margin:0;color:var(--muted);font-size:13px}
.activity-gallery{display:grid;grid-template-columns:1.35fr .65fr;gap:18px}
.activity-gallery figure{margin:0;position:relative;overflow:hidden;border-radius:12px;background:var(--green);min-height:500px}
.activity-gallery img{width:100%;height:100%;position:absolute;inset:0;object-fit:cover;transition:transform .7s ease}
.activity-main img{object-position:52% center}
.activity-side img{object-position:72% center}
.activity-gallery figure:after{content:"";position:absolute;inset:45% 0 0;background:linear-gradient(transparent,rgba(5,32,25,.85))}
.activity-gallery figure:hover img{transform:scale(1.025)}
.activity-gallery figcaption{position:absolute;z-index:1;left:28px;right:28px;bottom:25px;color:white;display:grid;grid-template-columns:34px 1fr;align-items:center}
.activity-gallery figcaption span{grid-row:1/3;color:var(--gold);font:600 17px Lora}
.activity-gallery figcaption strong{font:600 19px Lora}
.activity-gallery figcaption small{color:#d5dfda;font-size:11px}

@media(max-width:850px){.site-header{height:70px;background:rgba(250,252,249,.94);position:fixed}
.menu-toggle{display:block;margin-left:auto}
.header-cta{display:none}
nav{display:none;position:absolute;top:70px;left:0;right:0;background:white;padding:20px 25px;flex-direction:column;box-shadow:0 12px 25px rgba(0,0,0,.08)}
nav.open{display:flex}
.hero{grid-template-columns:1fr;min-height:0}
.hero-copy{padding:130px 7vw 40px}
.hero-visual{min-height:460px}
.hero-visual img{height:440px}
.hero-note{bottom:20px}
.metric-grid,.card-grid{grid-template-columns:1fr}
.fields .card-grid{grid-template-columns:1fr 1fr}
.about{grid-template-columns:1fr;padding-right:0}
.about-art{min-height:390px}
.about-copy{padding:55px 7vw}
.activity-gallery{grid-template-columns:1fr}
.activity-gallery figure{min-height:420px}
.activity-side img{object-position:50% center}
.project-grid{grid-template-columns:1fr 1fr}
.principles{grid-template-columns:1fr;gap:30px}
.principle-list{grid-template-columns:1fr 1fr}
.contact{align-items:flex-start;flex-direction:column;gap:30px}
.section-pad{padding:65px 7vw}
footer{flex-wrap:wrap}
footer p:last-child{width:100%;margin:0}
}
@media(max-width:520px){.hero h1{font-size:42px}
.hero-actions{align-items:flex-start;flex-direction:column}
.fields .card-grid{grid-template-columns:1fr}
.activity-gallery figure{min-height:320px}
.activity-gallery figcaption{left:18px;right:18px;bottom:18px}
.activity-gallery figcaption strong{font-size:16px}
.project-grid,.principle-list{grid-template-columns:1fr}
.project-grid article{min-height:210px}
.section-heading{align-items:flex-start;flex-direction:column;gap:12px}
.contact-links{font-size:14px}
}