/* ===================================================================
   WILD GINSENG — K-Wild Ginseng for Cook (Lasham)
   Nền trắng · điểm đỏ đô · sang trọng hoàng gia
   =================================================================== */

:root{
  --maroon:#6E1420;        /* đỏ đô chủ đạo */
  --maroon-deep:#54101a;
  --maroon-soft:#8a2233;
  --gold:#B8912E;          /* vàng hoàng gia */
  --gold-light:#d4b25a;
  --royal:#1B2A6B;         /* xanh hoàng cung (điểm nhấn) */
  --ivory:#FBF7F0;         /* nền ấm */
  --ivory-2:#F4ECE0;
  --ink:#2A2320;           /* chữ chính */
  --ink-soft:#6b615a;      /* chữ phụ */
  --line:#e7ddcd;
  --white:#ffffff;
  --shadow:0 20px 60px -24px rgba(84,16,26,.28);
  --shadow-soft:0 12px 40px -20px rgba(42,35,32,.25);
  --serif:'Be Vietnam Pro',system-ui,-apple-system,sans-serif; /* font hiển thị: không chân, chuẩn dấu tiếng Việt */
  --sans:'Be Vietnam Pro',system-ui,-apple-system,sans-serif;
  --maxw:1200px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--white);
  line-height:1.65;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--serif);font-weight:700;line-height:1.14;letter-spacing:.5px;text-transform:uppercase}
h1{font-weight:800}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-family:var(--sans);font-weight:600;font-size:.95rem;letter-spacing:.3px;
  padding:.9em 1.8em;border-radius:2px;cursor:pointer;border:1.5px solid transparent;
  transition:.35s cubic-bezier(.2,.7,.3,1);white-space:nowrap;
}
.btn-primary{background:var(--maroon);color:#fff;box-shadow:0 10px 30px -12px rgba(110,20,32,.6)}
.btn-primary:hover{background:var(--maroon-deep);transform:translateY(-2px);box-shadow:0 16px 40px -12px rgba(110,20,32,.7)}
.btn-ghost{background:transparent;color:var(--maroon);border-color:var(--maroon)}
.btn-ghost:hover{background:var(--maroon);color:#fff}
.btn-outline{background:transparent;color:var(--maroon);border-color:var(--line);border-color:rgba(110,20,32,.35)}
.btn-outline:hover{border-color:var(--maroon);background:var(--maroon);color:#fff}
.btn-nav{padding:.6em 1.4em;font-size:.85rem}
.btn-block{width:100%}

/* ---------- TOPBAR ---------- */
.topbar{
  background:var(--maroon-deep);color:#f3e4c9;text-align:center;
  font-size:.78rem;letter-spacing:1px;padding:.55em 1em;font-weight:400;
}
.topbar span{opacity:.92}

/* ---------- NAV ---------- */
.nav{
  position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);
  backdrop-filter:blur(12px);border-bottom:1px solid var(--line);
  transition:box-shadow .3s;
}
.nav.scrolled{box-shadow:0 6px 24px -18px rgba(42,35,32,.4)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:.7rem 1.5rem;display:flex;align-items:center;gap:2rem}
.brand{display:flex;align-items:center;gap:.7rem;margin-right:auto}
.brand-mark{
  font-family:serif;font-size:1.4rem;color:#fff;background:var(--maroon);
  width:42px;height:42px;display:grid;place-items:center;border-radius:3px;
  border:1px solid var(--gold);box-shadow:inset 0 0 0 3px rgba(184,145,46,.25);
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-family:var(--serif);font-weight:700;font-size:1.15rem;letter-spacing:2px;color:var(--maroon)}
.brand-sub{font-size:.66rem;letter-spacing:1.5px;color:var(--ink-soft);text-transform:uppercase}
.nav-links{display:flex;gap:1.7rem}
.nav-links a{font-size:.9rem;font-weight:500;color:var(--ink);position:relative;padding:.3em 0}
.nav-links a::after{content:'';position:absolute;left:0;bottom:0;width:0;height:1.5px;background:var(--maroon);transition:.3s}
.nav-links a:hover{color:var(--maroon)}
.nav-links a:hover::after{width:100%}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{width:24px;height:2px;background:var(--maroon);transition:.3s}

/* ---------- HERO ---------- */
.hero{position:relative;background:linear-gradient(160deg,#fff 0%,var(--ivory) 55%,var(--ivory-2) 100%);overflow:hidden}
.hero-bg-ornament{
  position:absolute;inset:0;pointer-events:none;opacity:.5;
  background:
    radial-gradient(circle at 82% 30%,rgba(184,145,46,.18),transparent 45%),
    radial-gradient(circle at 12% 80%,rgba(110,20,32,.08),transparent 40%);
}
.hero-inner{
  position:relative;max-width:var(--maxw);margin:0 auto;padding:5.5rem 1.5rem 5rem;
  display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center;
}
.eyebrow{
  font-size:.78rem;letter-spacing:3px;text-transform:uppercase;color:var(--maroon-soft);
  font-weight:600;margin-bottom:1.2rem;position:relative;padding-left:0;
}
.eyebrow.gold{color:var(--gold)}
.hero h1{font-size:clamp(2.1rem,4.3vw,3.5rem);color:var(--maroon);margin-bottom:1.4rem;letter-spacing:1px;line-height:1.18}
.lede{font-size:1.12rem;color:var(--ink-soft);max-width:34rem;margin-bottom:2rem}
.lede strong{color:var(--ink);font-weight:600}
.lede em{font-style:italic;color:var(--maroon-soft)}
.hero-cta{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:2.2rem}
.hero-trust{display:flex;gap:1.6rem;flex-wrap:wrap;font-size:.82rem;color:var(--ink-soft);letter-spacing:.5px}
.hero-trust span{position:relative}
.hero-visual{position:relative;display:grid;place-items:center}
.hero-glow{
  position:absolute;width:115%;height:115%;
  background:radial-gradient(circle,rgba(184,145,46,.28),transparent 62%);
  filter:blur(10px);
}
.hero-visual img{position:relative;filter:drop-shadow(0 30px 50px rgba(84,16,26,.28));animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-14px)}}
.scroll-cue{position:absolute;bottom:22px;left:50%;transform:translateX(-50%)}
.scroll-cue span{display:block;width:22px;height:36px;border:1.5px solid var(--maroon-soft);border-radius:20px;position:relative;opacity:.6}
.scroll-cue span::after{content:'';position:absolute;top:7px;left:50%;transform:translateX(-50%);width:3px;height:8px;background:var(--maroon);border-radius:2px;animation:scroll 1.8s infinite}
@keyframes scroll{0%{opacity:0;top:7px}40%{opacity:1}80%{opacity:0;top:18px}}

/* ---------- TRUST STRIP ---------- */
.trust-strip{
  background:var(--maroon-deep);color:#efdfc2;
  display:flex;justify-content:center;gap:clamp(1.5rem,5vw,4rem);flex-wrap:wrap;
  padding:1.4rem 1.5rem;
}
.trust-item{display:flex;align-items:center;gap:.7rem;font-size:.85rem;letter-spacing:.5px;font-weight:500}
.trust-item img{width:38px;height:38px;object-fit:contain;background:#fff;border-radius:50%;padding:3px}
.trust-ico{font-family:serif;color:var(--gold-light);font-size:1.1rem;width:38px;height:38px;display:grid;place-items:center;border:1px solid rgba(212,178,90,.4);border-radius:50%}

/* ---------- SECTION HEADS ---------- */
section{scroll-margin-top:80px}
.section-head{max-width:var(--maxw);margin:0 auto;padding:0 1.5rem}
.section-head.center{text-align:center}
.section-head h2{font-size:clamp(1.7rem,3.3vw,2.6rem);color:var(--maroon);margin-bottom:.7rem;letter-spacing:.8px}
.section-head .sub{color:var(--ink-soft);font-size:1.05rem;max-width:38rem;margin:0 auto}
.section-head.center .eyebrow{padding-left:0}

/* divider ornament under centered eyebrow */
.section-head.center h2::after{
  content:'❧';display:block;color:var(--gold);font-size:1.3rem;margin:.7rem auto 0;opacity:.8;
}

/* ---------- STORY ---------- */
.story{padding:5.5rem 0}
.story-grid{
  max-width:var(--maxw);margin:2.8rem auto 0;padding:0 1.5rem;
  display:grid;grid-template-columns:.9fr 1.1fr;gap:3.5rem;align-items:center;
}
.story-img{position:relative;border-radius:4px;overflow:hidden;box-shadow:var(--shadow)}
.story-img img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5}
.story-img figcaption{
  position:absolute;left:0;bottom:0;right:0;padding:1.4rem 1.4rem 1.1rem;color:#fff;font-size:.82rem;
  letter-spacing:1px;text-transform:uppercase;background:linear-gradient(transparent,rgba(84,16,26,.85))
}
.story-copy p{margin-bottom:1.2rem;color:var(--ink-soft);font-size:1.05rem}
.story-copy .drop::first-letter{
  font-family:var(--serif);font-size:3.3rem;font-weight:700;color:var(--maroon);
  float:left;line-height:.82;margin:.08em .12em 0 0;
}
.story-copy .drop{color:var(--ink)}
.story-facts{list-style:none;display:flex;gap:1.8rem;margin-top:2rem;flex-wrap:wrap}
.story-facts li{display:flex;flex-direction:column;border-left:2px solid var(--gold);padding-left:1rem}
.story-facts strong{font-family:var(--serif);font-size:1.5rem;color:var(--maroon)}
.story-facts span{font-size:.82rem;color:var(--ink-soft)}

/* ---------- ORIGIN (vùng trồng) ---------- */
.origin{padding:5.5rem 0;background:linear-gradient(180deg,#fff,var(--ivory))}
.origin-grid{max-width:var(--maxw);margin:2.8rem auto 0;padding:0 1.5rem;display:grid;grid-template-columns:1fr 1fr;gap:3rem;align-items:center}
.origin-gallery{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.origin-gallery img{width:100%;height:100%;object-fit:cover;border-radius:4px;box-shadow:var(--shadow-soft)}
.origin-gallery .og-main{grid-column:1/3;aspect-ratio:16/9}
.origin-gallery img:not(.og-main){aspect-ratio:1/1}
.origin-copy p{color:var(--ink-soft);font-size:1.05rem;margin-bottom:1.2rem}
.origin-copy strong{color:var(--maroon-soft);font-weight:600}
.origin-facts{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:1.4rem;margin-top:1.9rem}
.origin-facts li{display:flex;flex-direction:column;border-left:2px solid var(--gold);padding-left:1rem}
.origin-facts strong{font-family:var(--serif);font-size:1.35rem;color:var(--maroon);font-weight:700;letter-spacing:.5px}
.origin-facts span{font-size:.8rem;color:var(--ink-soft)}

/* ---------- PILLARS ---------- */
.pillars{padding:5rem 0;background:linear-gradient(180deg,var(--ivory),#fff)}
.pillars-grid{max-width:var(--maxw);margin:2.8rem auto 0;padding:0 1.5rem;display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem}
.pillar{
  background:#fff;border:1px solid var(--line);border-radius:4px;padding:2.6rem 2rem;text-align:center;
  transition:.4s;position:relative;overflow:hidden;
}
.pillar::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--gold),var(--maroon));transform:scaleX(0);transition:.4s}
.pillar:hover{transform:translateY(-6px);box-shadow:var(--shadow-soft)}
.pillar:hover::before{transform:scaleX(1)}
.pillar.featured{border-color:var(--gold);box-shadow:var(--shadow-soft)}
.pillar.featured::before{transform:scaleX(1)}
.pillar-ico{font-size:2rem;color:var(--gold);margin-bottom:1rem}
.pillar h3{font-size:1.5rem;color:var(--maroon);margin-bottom:.7rem}
.pillar p{color:var(--ink-soft);font-size:.98rem}

/* ---------- PRODUCTS ---------- */
.products{padding:5.5rem 0}
.products-grid{max-width:var(--maxw);margin:3rem auto 0;padding:0 1.5rem;display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem;align-items:stretch}
.product-card{
  background:#fff;border:1px solid var(--line);border-radius:6px;overflow:hidden;
  display:flex;flex-direction:column;transition:.4s;position:relative;
}
.product-card:hover{transform:translateY(-8px);box-shadow:var(--shadow)}
.product-card.featured{border:1.5px solid var(--gold);box-shadow:0 24px 60px -30px rgba(184,145,46,.6)}
.ribbon{
  position:absolute;top:16px;right:-34px;background:var(--maroon);color:#fff;
  font-size:.72rem;letter-spacing:1px;font-weight:600;padding:.35em 3em;transform:rotate(45deg);z-index:2;
  box-shadow:0 4px 12px rgba(84,16,26,.35);
}
.product-media{background:linear-gradient(160deg,var(--ivory),var(--ivory-2));padding:2rem;aspect-ratio:1/.82;display:grid;place-items:center}
.product-media img{max-height:100%;width:auto;object-fit:contain;filter:drop-shadow(0 16px 26px rgba(84,16,26,.18))}
.product-body{padding:1.8rem;display:flex;flex-direction:column;flex:1}
.product-tag{font-size:.72rem;letter-spacing:1.5px;text-transform:uppercase;color:var(--gold);font-weight:600;margin-bottom:.5rem}
.product-body h3{font-size:1.7rem;color:var(--maroon);margin-bottom:.6rem}
.product-desc{color:var(--ink-soft);font-size:.94rem;margin-bottom:1.4rem;flex:1}
.product-price{display:flex;align-items:baseline;gap:.4rem;margin-bottom:1.4rem}
.product-price .amount{font-family:var(--serif);font-size:2.1rem;font-weight:700;color:var(--maroon)}
.product-price .unit{color:var(--ink-soft);font-size:.9rem}
.products-note{text-align:center;color:var(--ink-soft);font-size:.9rem;margin-top:2rem;padding:0 1.5rem;font-style:italic}

/* ---------- HOWTO ---------- */
.howto{padding:5.5rem 0;background:linear-gradient(180deg,#fff,var(--ivory))}
.howto-grid{max-width:var(--maxw);margin:3rem auto 0;padding:0 1.5rem;display:grid;grid-template-columns:repeat(3,1fr);gap:1.8rem}
.howto-card{background:#fff;border-radius:6px;overflow:hidden;border:1px solid var(--line);transition:.4s}
.howto-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-soft)}
.howto-media{aspect-ratio:4/3;overflow:hidden;background:var(--ivory-2)}
.howto-media img{width:100%;height:100%;object-fit:cover;transition:.6s}
.howto-card:hover .howto-media img{transform:scale(1.06)}
.howto-copy{padding:1.8rem;position:relative}
.howto-num{font-family:var(--serif);font-size:2.4rem;font-weight:700;color:var(--gold);opacity:.5;line-height:1}
.howto-copy h3{font-size:1.4rem;color:var(--maroon);margin:.3rem 0 .6rem}
.howto-copy p{color:var(--ink-soft);font-size:.95rem}

/* ---------- FOREST BANNER ---------- */
.forest-banner{position:relative;background-size:cover;background-position:center;padding:6rem 1.5rem;text-align:center}
.forest-overlay{position:absolute;inset:0;background:linear-gradient(rgba(54,16,26,.72),rgba(54,16,26,.82))}
.forest-banner blockquote{position:relative;max-width:44rem;margin:0 auto;color:#fff}
.forest-banner p{font-family:var(--serif);font-size:clamp(1.8rem,3.4vw,2.7rem);font-style:italic;line-height:1.35;margin-bottom:1rem}
.forest-banner cite{color:var(--gold-light);letter-spacing:2px;font-size:.85rem;font-style:normal;text-transform:uppercase}

/* ---------- CERTS ---------- */
.certs{padding:5.5rem 0}
.certs-grid{max-width:var(--maxw);margin:3rem auto 0;padding:0 1.5rem;display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem}
.cert-badge{text-align:center;padding:2.2rem 1.4rem;border:1px solid var(--line);border-radius:6px;transition:.4s;background:#fff}
.cert-badge:hover{border-color:var(--gold);transform:translateY(-4px);box-shadow:var(--shadow-soft)}
.cert-badge img{width:82px;height:82px;object-fit:contain;margin:0 auto 1rem}
.cert-mono{display:grid;place-items:center;width:82px;height:82px;margin:0 auto 1rem;font-family:var(--serif);font-weight:700;color:var(--maroon);border:2px solid var(--gold);border-radius:50%;font-size:1.1rem;letter-spacing:1px}
.cert-badge h4{font-size:1.1rem;color:var(--maroon);margin-bottom:.4rem}
.cert-badge p{font-size:.85rem;color:var(--ink-soft)}

/* ---------- GIFT ---------- */
.gift{padding:5rem 0;background:linear-gradient(180deg,var(--ivory),#fff)}
.gift-inner{max-width:var(--maxw);margin:0 auto;padding:0 1.5rem;display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:center}
.gift-img{border-radius:6px;overflow:hidden;box-shadow:var(--shadow)}
.gift-img img{width:100%;aspect-ratio:4/3;object-fit:cover}
.gift-copy h2{font-size:clamp(1.7rem,3.2vw,2.5rem);color:var(--maroon);margin-bottom:1.1rem;letter-spacing:.8px}
.gift-copy p{color:var(--ink-soft);font-size:1.05rem;margin-bottom:1.8rem}

/* ---------- ORDER ---------- */
.order{padding:5.5rem 0;background:var(--maroon-deep);color:#f4e7cf}
.order-inner{max-width:var(--maxw);margin:0 auto;padding:0 1.5rem;display:grid;grid-template-columns:1fr 1fr;gap:3.5rem;align-items:start}
.order-info h2{color:#fff;font-size:clamp(1.9rem,3.4vw,2.7rem);margin-bottom:1rem}
.order-info>p{color:#e5d3b3;opacity:.9;margin-bottom:2rem}
.order-info .eyebrow{color:var(--gold-light)}
.order-contact{list-style:none;display:flex;flex-direction:column;gap:1rem}
.order-contact li{display:flex;align-items:center;gap:1rem;font-size:1.15rem;font-weight:500}
.order-contact a{color:#fff;transition:.3s}
.order-contact a:hover{color:var(--gold-light)}
.oc-ico{width:44px;height:44px;display:grid;place-items:center;border:1px solid rgba(212,178,90,.5);border-radius:50%;color:var(--gold-light);font-size:1.2rem}
.order-form{background:#fff;border-radius:8px;padding:2.4rem;color:var(--ink);box-shadow:var(--shadow)}
.form-row{margin-bottom:1.1rem}
.form-row.two{display:grid;grid-template-columns:1fr 1fr;gap:1rem}
.order-form label{display:flex;flex-direction:column;gap:.4rem;font-size:.85rem;font-weight:600;color:var(--ink);letter-spacing:.3px}
.order-form input,.order-form select,.order-form textarea{
  font-family:var(--sans);font-size:.95rem;padding:.8em .9em;border:1px solid var(--line);border-radius:4px;
  background:var(--ivory);color:var(--ink);transition:.25s;font-weight:400;
}
.order-form input:focus,.order-form select:focus,.order-form textarea:focus{
  outline:none;border-color:var(--maroon);background:#fff;box-shadow:0 0 0 3px rgba(110,20,32,.1)
}
.order-form textarea{resize:vertical}
.form-hint{font-size:.85rem;margin-top:.8rem;text-align:center;min-height:1.2em}
.form-hint.ok{color:#1c7c3f}
.form-hint.err{color:var(--maroon)}

/* ---------- FOOTER ---------- */
.footer{background:#1a1512;color:#cbb99b}
.footer-inner{max-width:var(--maxw);margin:0 auto;padding:3rem 1.5rem;display:flex;justify-content:space-between;align-items:center;gap:2rem;flex-wrap:wrap}
.footer-brand{display:flex;align-items:center;gap:1rem}
.footer-brand .brand-name{color:#fff;letter-spacing:2px}
.footer-brand .brand-sub{color:#9a8a70}
.footer-links{display:flex;gap:1.6rem;flex-wrap:wrap}
.footer-links a{font-size:.9rem;transition:.3s}
.footer-links a:hover{color:var(--gold-light)}
.footer-contact{font-size:.9rem;text-align:right}
.footer-contact p{margin-bottom:.2rem}
.disclaimer{border-top:1px solid rgba(203,185,155,.15);text-align:center;padding:1.4rem 1.5rem;font-size:.78rem;color:#8f8069;line-height:1.7}
.disclaimer p{max-width:60rem;margin:0 auto}

/* ---------- TOAST ---------- */
.toast{
  position:fixed;bottom:28px;left:50%;transform:translateX(-50%) translateY(120px);
  background:var(--maroon);color:#fff;padding:1em 1.6em;border-radius:4px;font-size:.92rem;font-weight:500;
  box-shadow:var(--shadow);z-index:200;transition:.4s cubic-bezier(.2,.7,.3,1);max-width:90vw;
  border:1px solid var(--gold);
}
.toast.show{transform:translateX(-50%) translateY(0)}

/* ---------- REVEAL ANIMATION ---------- */
.reveal{opacity:0;transform:translateY(28px);transition:.8s cubic-bezier(.2,.7,.3,1)}
.reveal.in{opacity:1;transform:none}

/* ---------- RESPONSIVE ---------- */
@media(max-width:900px){
  .nav-links,.btn-nav{display:none}
  .nav-toggle{display:flex}
  .nav.open .nav-links{
    display:flex;flex-direction:column;position:absolute;top:100%;left:0;right:0;
    background:#fff;padding:1.2rem 1.5rem;gap:1rem;border-bottom:1px solid var(--line);box-shadow:var(--shadow-soft)
  }
  .hero-inner{grid-template-columns:1fr;text-align:center;padding-top:3.5rem}
  .hero-text{order:2}
  .hero-visual{order:1;max-width:360px;margin:0 auto}
  .lede{margin-left:auto;margin-right:auto}
  .hero-cta,.hero-trust{justify-content:center}
  .story-grid,.gift-inner,.order-inner,.origin-grid{grid-template-columns:1fr;gap:2.2rem}
  .pillars-grid,.products-grid,.howto-grid{grid-template-columns:1fr}
  .certs-grid{grid-template-columns:1fr 1fr}
  .footer-inner{flex-direction:column;text-align:center}
  .footer-contact{text-align:center}
}
@media(max-width:520px){
  .form-row.two{grid-template-columns:1fr}
  .certs-grid{grid-template-columns:1fr}
  .story-facts{gap:1.2rem}
  .hero-trust{gap:1rem;font-size:.75rem}
}