:root{
  --green:#2f7a3a; --green-dark:#1e5427; --gold:#c79a3a;
  --red:#d0342c; --bg:#f7f4ea; --ink:#1f2937; --muted:#6b7280;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Be Vietnam Pro",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55}
img{max-width:100%;display:block}
a{color:var(--green-dark);text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
h1,h2,h3{font-family:"Be Vietnam Pro",Georgia,serif;color:var(--green-dark);line-height:1.25}
h1{font-size:2.2rem;margin:.4em 0}
h2{font-size:1.8rem;margin:0 0 .6em;text-align:center}
.section-lead{text-align:center;max-width:760px;margin:0 auto 30px;color:var(--muted)}

.expiry-footer{background:#fff3cd;color:#5a4500;padding:14px 0;font-size:.88rem;border-top:2px solid #c79a3a;line-height:1.5;text-align:center}
.expiry-footer .container{max-width:860px}
.track-card{background:#f7f4ea;border:1px solid #dde0c8;border-radius:10px;padding:16px;margin-bottom:12px;font-size:.95rem;line-height:1.7}
.track-card div{margin-bottom:2px}
.track-status{margin-top:6px;color:var(--green-dark);font-weight:600}

/* address selects */
.form select{width:100%;padding:11px 12px;border:1px solid #d4cdba;border-radius:8px;font-size:1rem;font-family:inherit;background:#fff;margin-top:4px;color:#1f2937}
.form select:disabled{background:#f5f5f5;color:#aaa}
.checkbox-line{display:flex!important;align-items:flex-start;gap:10px;background:#fff7e5;padding:12px 14px;border-radius:8px;border:1px solid #c79a3a;margin:12px 0;font-weight:500!important;font-size:.9rem!important;cursor:pointer}
.checkbox-line input{width:auto!important;margin:3px 0 0!important;flex:0 0 auto!important}
.checkbox-line span{flex:1;line-height:1.45}

/* topbar */
.topbar{background:linear-gradient(90deg,#fff 60%,#f3f9f0 100%);border-bottom:1px solid #dde8d6;position:sticky;top:0;z-index:10;box-shadow:0 2px 12px rgba(30,84,39,.07)}
.topbar-row{display:flex;align-items:center;justify-content:space-between;padding:10px 20px}
.brand-mark{
  font-family:"Dancing Script","Playfair Display",Georgia,serif;
  font-size:2rem;
  font-weight:700;
  letter-spacing:.5px;
  background:linear-gradient(135deg,var(--green-dark) 0%,#4caf50 50%,var(--gold) 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  line-height:1;
  filter:drop-shadow(0 1px 2px rgba(30,84,39,.15));
}
.brand-sub{display:block;font-size:.65rem;color:var(--muted);letter-spacing:3px;text-transform:uppercase;margin-top:2px;-webkit-text-fill-color:var(--muted)}
.topbar nav a{margin-left:18px;color:#333;font-weight:500}
.topbar nav a:hover{color:var(--green)}

/* buttons */
.btn{display:inline-block;border:0;border-radius:8px;padding:10px 18px;cursor:pointer;font-weight:600;transition:.15s;text-align:center}
.btn-primary{background:var(--red);color:#fff}
.btn-primary:hover{background:#b7231c}
.btn-ghost{background:transparent;color:var(--green-dark);border:2px solid var(--green-dark)}
.btn-ghost:hover{background:var(--green-dark);color:#fff}
.btn-lg{padding:14px 28px;font-size:1.05rem}
.btn-sm{padding:8px 14px;font-size:.9rem}
.w-full{width:100%}

/* hero */
.hero{padding:40px 0 60px;background:linear-gradient(180deg,#f7f4ea 0%,#ebe3cf 100%)}
.hero-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
.accent{color:var(--red)}
.badge-flash{display:inline-block;background:var(--red);color:#fff;padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:600;margin-bottom:14px}
.lead{font-size:1.08rem;color:#444;margin:16px 0}
.price-box{background:#fff;border:2px dashed var(--red);border-radius:12px;padding:16px 20px;margin:16px 0}
.price-old{color:var(--muted);font-size:.95rem}
.price-new{font-size:2.4rem;color:var(--red);font-weight:800;line-height:1}
.price-new span{font-size:1.2rem}
.price-new small{font-size:.9rem;color:#555;font-weight:500;margin-left:6px}
.price-tiers{margin:12px 0;display:grid;grid-template-columns:repeat(2,1fr);gap:6px}
.tier{display:flex;align-items:center;gap:10px;background:#faf6ec;padding:8px 12px;border-radius:8px;border:1px solid #ece3c8}
.tier.hot{background:#fff0ee;border-color:var(--red);box-shadow:0 0 0 1px var(--red) inset}
.t-qty{font-weight:700;color:var(--green-dark);min-width:60px}
.t-price{color:var(--red);font-weight:700;flex:1}
.t-save{background:var(--gold);color:#fff;font-size:.72rem;padding:2px 8px;border-radius:10px;font-weight:700}
.tier.hot .t-save{background:var(--red)}
.price-note{color:var(--green-dark);font-weight:600;margin-top:8px}
.price-warn{background:#fff7e5;border-left:4px solid var(--gold);padding:10px 12px;margin-top:12px;font-size:.9rem;color:#5a4500;border-radius:6px}
.hero-cta{margin:18px 0}
.hero-cta .btn{margin-right:10px;margin-bottom:10px}
.hero-trust{list-style:none;padding:0;display:flex;gap:20px;flex-wrap:wrap;color:#444;font-size:.95rem}
.hero-visual{text-align:center}
/* ── Product Gallery ─────────────────────────────────────────────────────── */
.product-gallery{position:relative;width:100%}
.gallery-main{position:relative;background:#fff;border-radius:22px;box-shadow:0 24px 50px rgba(31,84,39,.18);overflow:hidden;cursor:zoom-in;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center}
.gallery-main img{width:100%;height:100%;object-fit:contain;padding:16px;transition:opacity .18s ease,transform .3s ease}
.gallery-main:hover img{transform:scale(1.04)}
.gallery-zoom-ico{position:absolute;bottom:14px;right:14px;background:rgba(0,0,0,.45);color:#fff;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1rem;opacity:0;transition:.2s}
.gallery-main:hover .gallery-zoom-ico{opacity:1}
.sticker{position:absolute;top:-10px;right:-10px;background:var(--red);color:#fff;width:68px;height:68px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:1.15rem;transform:rotate(-12deg);box-shadow:0 6px 14px rgba(208,52,44,.45);z-index:2}
.gallery-thumbs{display:flex;gap:10px;margin-top:12px}
.g-thumb{flex:1;background:#fff;border-radius:12px;border:2px solid transparent;overflow:hidden;cursor:pointer;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 12px rgba(0,0,0,.06);transition:.2s}
.g-thumb img{width:100%;height:100%;object-fit:contain;padding:8px;transition:.2s}
.g-thumb:hover{border-color:var(--green);transform:translateY(-2px)}
.g-thumb.active{border-color:var(--green-dark);box-shadow:0 0 0 3px rgba(47,122,58,.25)}
.float-badge{position:absolute;background:rgba(30,84,39,.92);color:#fff;font-size:.72rem;font-weight:700;line-height:1.4;padding:7px 11px;border-radius:10px;text-align:center;backdrop-filter:blur(4px);pointer-events:none;z-index:3}
.float-tl{top:14px;left:-12px}
.float-br{bottom:60px;right:-12px}

/* benefit */
.benefit{padding:60px 0;background:#fff}
.benefit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.b-card{background:#f7f4ea;padding:22px;border-radius:12px}
.b-ico{font-size:2rem;margin-bottom:6px}
.b-card h3{font-size:1.15rem;margin:.2em 0}

/* ingredients */
.ingredients{padding:60px 0;background:#ebe3cf}
.ing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;max-width:900px;margin:0 auto}
.ing-grid>div{background:#fff;padding:16px;border-radius:8px;border-left:4px solid var(--green)}

/* review */
.review{padding:60px 0;background:#fff}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.r-card{background:#f7f4ea;padding:22px;border-radius:12px}
.r-stars{color:var(--gold);font-size:1.2rem;margin-bottom:6px}
.r-who{color:var(--muted);margin-top:10px;font-style:italic}

/* order */
.order{padding:60px 0;background:linear-gradient(180deg,#ebe3cf,#f7f4ea)}
.order-wrap{display:grid;grid-template-columns:2fr 1fr;gap:30px}
.form label{display:block;margin:10px 0;font-weight:600;font-size:.95rem}
.form input,.form select,.form textarea{width:100%;padding:11px 12px;border:1px solid #d4cdba;border-radius:8px;font-size:1rem;font-family:inherit;background:#fff;margin-top:4px;font-weight:400}
.form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.total-line{background:#fff;border:2px solid var(--green);border-radius:10px;padding:14px 18px;margin:14px 0;font-weight:700;color:var(--green-dark);font-size:1.15rem;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.free-ship{background:var(--green);color:#fff;padding:4px 10px;border-radius:6px;font-size:.8rem}
.form-note{text-align:center;color:var(--muted);font-size:.85rem;margin-top:10px}
.side-card{background:#fff;border-radius:12px;padding:20px;margin-bottom:16px;box-shadow:0 4px 12px rgba(0,0,0,.04)}
.side-card h3{margin-top:0;color:var(--green-dark)}
.side-card ul{padding-left:18px;margin:0}
.side-card.warn{border-left:4px solid var(--gold);background:#fff7e5}

/* modal */
.modal{display:none;position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:100;overflow-y:auto;padding:20px}
.modal.show{display:block}
.modal-inner{background:#fff;max-width:680px;margin:30px auto;border-radius:14px;padding:30px;position:relative}
.modal-close{position:absolute;top:10px;right:14px;background:none;border:0;font-size:2rem;cursor:pointer;color:#999}
.qr-grid{display:grid;grid-template-columns:260px 1fr;gap:20px;margin:20px 0;align-items:center}
.qr-img img{width:100%;border:1px solid #eee;border-radius:8px}
.qr-info div{margin-bottom:10px}
.qr-info label{display:block;color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:1px}
.qr-info b{font-size:1.05rem}
.qr-info button{margin-left:6px;font-size:.75rem;padding:3px 8px;border:1px solid #ccc;background:#f7f7f7;border-radius:4px;cursor:pointer}
.red{color:var(--red)}
.status-wait{background:#fff7e5;padding:12px;border-radius:8px;color:#5a4500;display:flex;align-items:center;gap:10px}
.status-ok{background:#e6f6e8;padding:12px;border-radius:8px;color:#1e5427;font-weight:600}
.spinner{width:16px;height:16px;border:3px solid #d0a037;border-top-color:transparent;border-radius:50%;display:inline-block;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.small{color:var(--muted);font-size:.85rem;margin-top:14px}

/* ── Đồng hồ đếm ngược + stock ──────────────────────────────────────────── */
.urgency-row{display:flex;gap:12px;margin:14px 0;flex-wrap:wrap}
.countdown-box,.stock-box{flex:1;min-width:160px;background:linear-gradient(135deg,#1e5427,#2f7a3a);color:#fff;padding:12px 16px;border-radius:12px}
.cd-label{font-size:.75rem;opacity:.85;text-transform:uppercase;letter-spacing:1px;margin-bottom:6px}
.countdown{display:flex;align-items:center;gap:4px}
.cd-unit{text-align:center}
.cd-unit span{display:block;font-size:1.8rem;font-weight:800;line-height:1;min-width:42px;text-align:center;background:rgba(255,255,255,.15);border-radius:6px;padding:2px 4px}
.cd-unit small{font-size:.65rem;opacity:.8;display:block;margin-top:2px}
.cd-sep{font-size:1.5rem;font-weight:800;opacity:.7;margin-bottom:10px}
.stock-bar-wrap{margin-top:4px}
.stock-bar{background:rgba(255,255,255,.25);border-radius:10px;height:10px;overflow:hidden;margin-bottom:6px}
.stock-fill{height:100%;background:#f9c74f;border-radius:10px;transition:width 1s ease;width:0}
.stock-text{font-size:.85rem;opacity:.9}

/* ── Toast thông báo ────────────────────────────────────────────────────── */
.toast{position:fixed;bottom:80px;left:16px;background:#1f2937;color:#fff;padding:12px 16px;border-radius:12px;font-size:.88rem;z-index:300;box-shadow:0 8px 24px rgba(0,0,0,.3);transform:translateX(-130%);transition:transform .4s cubic-bezier(.34,1.56,.64,1);max-width:300px;display:flex;align-items:center;gap:10px}
.toast.show{transform:translateX(0)}
.toast-avatar{width:36px;height:36px;border-radius:50%;background:var(--green);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0}

/* ── Sticky CTA (mobile) ───────────────────────────────────────────────── */
.sticky-cta{position:fixed;bottom:0;left:0;right:0;z-index:50;background:#fff;box-shadow:0 -4px 20px rgba(0,0,0,.12);padding:10px 16px;transform:translateY(100%);transition:transform .35s ease;display:none}
.sticky-cta.visible{transform:translateY(0)}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:480px;margin:0 auto}
.sticky-price{font-size:1rem;color:var(--ink)}
.sticky-price b{color:var(--red);font-size:1.15rem}
.sticky-sub{font-size:.78rem;color:var(--muted)}

/* ── Live badge ────────────────────────────────────────────────────────── */
.live-badge{display:inline-flex;align-items:center;gap:8px;background:#fff0f0;border:1px solid #f5c6c6;color:var(--red);padding:6px 14px;border-radius:20px;font-size:.85rem;font-weight:600;margin-bottom:16px}
.live-dot{width:8px;height:8px;background:var(--red);border-radius:50%;animation:pulse-dot 1.4s infinite}
@keyframes pulse-dot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.5;transform:scale(1.4)}}

/* ── Scroll fade-in ────────────────────────────────────────────────────── */
.fade-in{opacity:0;transform:translateY(36px);transition:opacity .65s ease,transform .65s ease}
.fade-in.visible{opacity:1;transform:none}

/* ── Pulse nút CTA ─────────────────────────────────────────────────────── */
.btn-primary{animation:pulse-btn 2.5s infinite}
@keyframes pulse-btn{0%,100%{box-shadow:0 0 0 0 rgba(208,52,44,.4)}60%{box-shadow:0 0 0 10px rgba(208,52,44,0)}}
.btn-primary:hover{animation:none}

/* ── Count-up ──────────────────────────────────────────────────────────── */
.count-up{display:inline-block}

/* lightbox */
#lightbox{display:none;position:fixed;inset:0;background:rgba(0,0,0,.88);z-index:200;align-items:center;justify-content:center;cursor:zoom-out}
#lightbox.show{display:flex}
#lightbox img{max-width:92vw;max-height:92vh;border-radius:10px;box-shadow:0 20px 60px rgba(0,0,0,.5)}

@media (max-width:860px){
  .sticky-cta{display:block}
  .toast{bottom:76px}
  .hero{padding:20px 0 30px}
  .hero-grid,.order-wrap{grid-template-columns:1fr;gap:24px}
  .hero-visual{order:-1}
  .float-tl{top:10px;left:6px;font-size:.65rem;padding:5px 8px}
  .float-br{bottom:54px;right:6px;font-size:.65rem;padding:5px 8px}
  .sticker{width:54px;height:54px;font-size:1rem;top:-6px;right:-6px}
  .benefit{padding:40px 0}
  .ingredients,.review{padding:40px 0}
  .order{padding:40px 0}
  .benefit-grid,.review-grid,.ing-grid{grid-template-columns:1fr 1fr;gap:12px}
  .b-card,.r-card{padding:16px}
  .qr-grid{grid-template-columns:1fr;gap:16px}
  .qr-img{text-align:center}
  .qr-img img{max-width:260px;margin:0 auto}
  .form .row{grid-template-columns:1fr;gap:0}
  .price-tiers{grid-template-columns:1fr}
  h1{font-size:1.55rem;line-height:1.3}
  h2{font-size:1.4rem}
  .lead{font-size:.98rem}
  .price-new{font-size:2rem}
  .topbar-row{padding:10px 14px}
  .brand-mark{font-size:1.7rem}
  .brand-sub{font-size:.65rem;letter-spacing:1px}
  .topbar nav a:not(.btn){display:none}
  .topbar nav a.btn{padding:8px 14px;font-size:.85rem}
  .hero-cta .btn{display:block;width:100%;margin:0 0 10px}
  .hero-trust{justify-content:center;font-size:.85rem;gap:10px 14px}
  .badge-flash{font-size:.78rem;padding:5px 12px}
  .btn-lg{padding:14px 20px;font-size:1rem}
  .modal-inner{padding:20px 16px;margin:10px auto;border-radius:10px}
  .modal{padding:0}
  .expiry-banner{font-size:.82rem;padding:8px 12px}
  .container{padding:0 14px}
  .total-line{font-size:1rem;padding:12px 14px}
  #lightbox img{max-width:98vw;max-height:88vh}
}
@media (max-width:520px){
  .benefit-grid,.review-grid,.ing-grid{grid-template-columns:1fr}
  .qr-info b{font-size:1rem;word-break:break-all}
  .qr-info button{margin-top:4px;margin-left:0;display:inline-block}
  .form input,.form select,.form textarea{font-size:16px} /* tránh iOS zoom */
}