:root{
  --bg: #f6f9ff;
  --bg-2: #ffffff;
  --brand: #f59e0b;     /* amber */
  --accent: #14b8a6;    /* teal */
  --text: #162033;      /* dark navy */
  --muted: #5a6b86;
  --card: #ffffff;
  --border: #e5ecf6;
  --white: #111111;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, "Noto Sans", "PingFang SC", "Microsoft Yahei", sans-serif;
  color: var(--text);
  /* Light layered background + vitamin photo */
  background-image:
    linear-gradient(rgba(255,255,255,.92), rgba(255,255,255,.92)),
    radial-gradient(1200px 600px at 10% -10%, #eef3ff, transparent),
    radial-gradient(1000px 500px at 120% 10%, #f2f6ff, transparent),
    linear-gradient(180deg, var(--bg), var(--bg-2)),
    image-set(url('/assets/img/bg-vitamins.webp') type('image/webp') 1x,
              url('/assets/img/bg-vitamins.jpg') type('image/jpeg') 1x);
  background-position: center, 10% -10%, 120% 10%, center, center;
  background-size: auto, 1200px 600px, 1000px 500px, auto, cover;
  background-repeat: no-repeat,no-repeat,no-repeat,no-repeat,no-repeat;
  background-attachment: fixed,fixed,fixed,fixed,fixed;
  line-height:1.6;
}
a{ text-decoration: none;}
/* Layout */
.container{width: min(1100px, 92%); margin: 0 auto}
.site-header{border-bottom:1px solid var(--border); background:rgba(255,255,255,.78); backdrop-filter:blur(8px); position:sticky; top:0; z-index:10}
.site-header .container{display:flex; align-items:center; justify-content:space-between; padding:14px 0}
.logo{color:var(--text); text-decoration:none; font-weight:700; letter-spacing:.4px}
.top-nav a{color:var(--text); text-decoration:none; margin-left:18px; padding:8px 10px; border-radius:999px; border:1px solid transparent}
.top-nav a:hover{border-color:var(--border)}
.top-nav .cta{background:var(--brand); color:#1a1a1a; font-weight:700}
.top-nav .active{border-color:var(--brand)}

.site-footer{border-top:1px solid var(--border); padding:28px 0; background:#f8fbff}
.footer-grid{display:grid; grid-template-columns:2fr 1.2fr 1.2fr; gap:20px}
.footer-nav a{display:block; color:var(--text); text-decoration:none; margin:4px 0}
.footer-nav a:hover{color:#0f172a}
.legal{padding-top:8px; color:var(--muted); text-align:center}

/* Hero */
.hero{padding:56px 0 20px; position:relative; overflow:hidden}
.hero-grid{display:grid; grid-template-columns:1.3fr 1fr; gap:32px; align-items:center}
.hero-copy h1{font-size:36px; line-height:1.2; margin:0 0 10px; color:#0f1b2d}
.hero-copy h1 span{color:var(--brand)}
.hero-copy p{color:#26324a}
.hero-art img{width:100%; height:auto; border-radius:16px; border:1px solid var(--border); background:#fff}
.bullets{padding-left:18px}
.bullets li{margin:4px 0}
.btn{display:inline-block; padding:10px 16px; border-radius:999px; background:var(--accent); color:#07111e; font-weight:700; text-decoration:none; border:1px solid transparent; margin-right:10px}
.btn:hover{filter:brightness(1.05)}
.btn.ghost{background:transparent; color:var(--text); border-color:var(--border)}
.btn.small{padding:8px 12px; font-size:14px}
.hero-cta{margin-top:12px}

/* Sections */
.stripe{padding:28px 0}
.three-cols{display:grid; grid-template-columns:repeat(3,1fr); gap:18px}
.card{background:var(--card); border:1px solid var(--border); border-radius:16px; padding:16px; box-shadow:0 2px 8px rgba(15,23,42,.04)}
.card img{width:100%; height:auto; border-radius:12px; margin-bottom:10px}
.card.text{display:block;margin-bottom: 15px;}
.card .more{color:#0ea5a5; text-decoration:none}

/* Home extras */
.two-cols{display:grid; grid-template-columns:2fr 1.1fr; gap:24px; margin:26px auto;}
.emphasis{background:linear-gradient(180deg, #ffffff, #f5f9ff); border:1px solid var(--border); border-radius:16px; padding:18px}
.checklist{padding-left:18px}
.checklist li{margin:6px 0}

/* Products */
.lede{color:#26324a}
.index-list{display:flex; flex-wrap:wrap; gap:8px; padding:0; list-style:none; margin:12px 0 20px}
.index-list a{display:inline-block; padding:6px 10px; border:1px solid var(--border); border-radius:999px; text-decoration:none; color:var(--text)}
.index-list a:hover{border-color:#c9d8ee}

.product-grid{display:grid; grid-template-columns:1fr 1.2fr; gap:22px; align-items:start; border-top:1px dashed var(--border); padding:18px 0}
.product-grid:first-of-type{border-top:0}
.product-grid.alt{grid-template-columns:1.2fr 1fr}
.product-grid figure{margin:0}
.product-grid img{width:100%; border-radius:14px; border:1px solid var(--border); background:#fff}
.spec{width:100%; border-collapse:collapse; margin-top:8px}
.spec th,.spec td{border:1px solid var(--border); padding:8px; text-align:left}
.note{color:var(--muted)}

/* Services */
.service{border-top:1px dashed var(--border); padding:16px 0}
.service:first-of-type{border-top:0}

/* Applications */
.app{border-top:1px dashed var(--border); padding:14px 0}

/* Resources */
.doc-list{padding-left:18px}
.faq details{background:#ffffff; border:1px solid var(--border); border-radius:12px; padding:12px; margin:10px 0}
.faq summary{cursor:pointer; font-weight:700}

/* Contact */
.contact-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:18px; margin-top:12px}
.contact-card{background:#ffffff; border:1px solid var(--border); border-radius:14px; padding:16px}

/* === Circular vitamin elements (badges, rings, bubbles) === */
.vit-badge-row{display:flex; gap:12px; flex-wrap:wrap; align-items:center; margin-top:10px}
.vit-circle{
  --size:64px; --hue:46; --sat:98%; --lit:55%;
  width:var(--size); height:var(--size); border-radius:50%;
  display:grid; place-items:center; font-weight:800; letter-spacing:.5px;
  color:#0b1220; text-shadow: 0 1px 0 rgba(255,255,255,.35);
  background: radial-gradient(60% 60% at 30% 28%, hsla(var(--hue) var(--sat) calc(var(--lit) + 18%) / .95), hsla(var(--hue) var(--sat) var(--lit) / .95) 60%, hsla(var(--hue) var(--sat) calc(var(--lit) - 14%) / .95) 100%);
  border:1px solid rgba(0,0,0,.06);
  box-shadow: 0 10px 24px rgba(15,23,42,.08), inset 0 3px 10px rgba(255,255,255,.28), inset 0 -10px 18px rgba(0,0,0,.06);
  user-select:none
}
.vit-circle.large{ --size:96px; font-size:28px }
.vit-circle.small{ --size:44px; font-size:14px }
.vit-circle.orange{ --hue:38 }
.vit-circle.blue{ --hue:200 }
.vit-circle.purple{ --hue:265 }
.vit-circle.red{ --hue:6 }
.vit-circle.green{ --hue:140 }

.vit-ring{
  --size:84px; width:var(--size); height:var(--size); border-radius:50%;
  background: radial-gradient(50% 50% at 50% 50%, rgba(255,255,255,.55), transparent 60%),
              conic-gradient(from 180deg, rgba(15,23,42,.18), rgba(15,23,42,0) 40%, rgba(15,23,42,.18) 60%, rgba(15,23,42,0));
  border:1px solid var(--border); box-shadow: inset 0 0 18px rgba(15,23,42,.06)
}

/* Decorative floating bubbles for hero or sections */
.vit-bubble-field{ position:absolute; inset:0; pointer-events:none; z-index:0 }
.vit-bubble{
  position:absolute; left:var(--x,50%); top:var(--y,50%); transform:translate(-50%,-50%);
  width:var(--size,120px); height:var(--size,120px); border-radius:999px;
  background: radial-gradient(40% 40% at 35% 30%, hsla(var(--hue,45) 90% 70% /.28), hsla(var(--hue,45) 90% 55% /.16) 40%, rgba(255,255,255,0) 66%);
  border:1px solid rgba(15,23,42,.06); filter: blur(1px)
}

/* Utilities */
h1,h2,h3{color:#0f1b2d}
h1{font-size:30px} h2{font-size:22px} h3{font-size:18px}
.muted{color:var(--muted)}
.logo-row{display:flex; gap:18px; list-style:none; padding:0; margin:6px 0}
.logo-row li{background:#ffffff; border:1px solid var(--border); padding:8px 12px; border-radius:999px}

/* Responsive */
@media (max-width: 980px){
  .hero-grid{grid-template-columns:1fr}
  .three-cols{grid-template-columns:1fr}
  .two-cols{grid-template-columns:1fr}
  .product-grid, .product-grid.alt{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .contact-grid{grid-template-columns:1fr}
}

.pagepn{margin-top:2rem;}
/*---- page ---- */
#pages{font-size: 12px;padding-top: 20px;text-align: center;}
.pagination {width:100%;text-align: center;}
.pagination ul{display: inline-block;}
.pagination li {display: inline-block;margin-right:10px;line-height: 30px;height: 30px;}
.pagination li:last-child{margin-right:0px;}
.pagination li a,.pagination li span {display: block;color: #555;background-color: #f3f3f3;padding:0 5px;}
.pagination li a:hover,.pagination li a:focus,.pagination li span:hover,.pagination li span:focus {background-color: #d7d7d7;}
.pagination .active a,.pagination .active a:hover,.pagination .active a:focus,.pagination .active span,.pagination .active span:hover,.pagination .active span:focus {background-color: #d7d7d7;}