:root {
  --bg: #f5f7fa;
  --surface: #ffffff;
  --ink: #2d3748;
  --ink-2: #4a5568;
  --muted: #718096;
  --line: #e2e8f0;
  --accent: #2b6cb0;
  --accent-2: #4299e1;
  --accent-ink: #1a365d;
  --grey-brand: #8c9aab;
  --blue-brand: #2b6cb0;
  --blue-brand-dark: #1a5194;
  --node-light: #90cdf4;
  --node-mid: #5a9cc9;
  --node-dark: #2d4a6b;
  --warn: #b45309;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 2px rgba(12, 23, 43, 0.05);
  --shadow-md: 0 4px 20px rgba(12, 23, 43, 0.08);
  --max: 1200px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Inter, system-ui, sans-serif;
  --mono: "SF Mono", ui-monospace, "Menlo", Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }
img { max-width: 100%; display: block; }
h1, h2, h3, h4 { font-weight: 650; letter-spacing: -0.01em; color: var(--ink); margin: 0 0 .6rem; }
h1 { font-size: clamp(2rem, 4vw, 3.1rem); line-height: 1.1; letter-spacing: -0.02em; }
h2 { font-size: clamp(1.5rem, 2.4vw, 2.1rem); }
h3 { font-size: 1.2rem; }
p { margin: 0 0 1rem; color: var(--ink-2); }
.container { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
.mono { font-family: var(--mono); font-size: .85rem; }

/* Top research-use banner */
.ruo-banner {
  background: #1a365d;
  color: #c3dafe;
  font-size: .78rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  text-align: center;
  padding: .5rem 1rem;
}
.ruo-banner strong { color: #fff; }

/* Header */
header.site {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
header .bar {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding: 1rem 1.25rem;
  max-width: var(--max);
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand .logo-img {
  height: 46px;
  width: auto;
}
.nav { display: flex; gap: 1.4rem; margin-left: auto; align-items: center; }
.nav a {
  color: var(--ink-2);
  font-weight: 500;
  font-size: .95rem;
}
.nav a:hover { color: var(--ink); }
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .65rem 1.1rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: .92rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .08s ease, background .15s ease, border-color .15s ease;
}
.btn-primary { background: var(--ink); color: #fff; }
.btn-primary:hover { background: var(--accent); color: #fff; }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--ink); }

/* Hero */
.hero {
  position: relative;
  padding: 5rem 0 4rem;
  background:
    radial-gradient(1200px 500px at 85% 0%, rgba(66, 153, 225, 0.12), transparent 60%),
    radial-gradient(900px 500px at 10% 20%, rgba(43, 108, 176, 0.09), transparent 60%),
    linear-gradient(180deg, #ffffff 0%, var(--bg) 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero .grid-overlay {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(43, 108, 176, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(43, 108, 176, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(600px 300px at 50% 30%, black, transparent 80%);
  pointer-events: none;
}
.hero .content { position: relative; display: grid; gap: 1.25rem; max-width: 760px; }
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: .5rem;
  font-size: .8rem; text-transform: uppercase; letter-spacing: .14em;
  color: var(--accent); font-weight: 700;
}
.hero .eyebrow::before { content: ''; width: 8px; height: 8px; background: var(--accent-2); border-radius: 50%; box-shadow: 0 0 0 4px rgba(66,153,225,.18); }
.hero p.lead { font-size: 1.15rem; max-width: 620px; color: var(--ink-2); }
.hero .cta { display: flex; gap: .8rem; margin-top: .5rem; flex-wrap: wrap; }

/* Value props */
.values {
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}
.values .grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
}
.values .cell {
  background: var(--surface);
  padding: 2rem 1.5rem;
}
.values .cell .k {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent);
}
.values .cell h3 { margin: .6rem 0 .3rem; font-size: 1.1rem; }
.values .cell p { font-size: .93rem; margin: 0; color: var(--muted); }

/* Sections */
section.block { padding: 4rem 0; }
section.block .head { display: flex; align-items: end; justify-content: space-between; gap: 1rem; margin-bottom: 1.8rem; }
section.block .head h2 { margin: 0; }
section.block .head .sub { color: var(--muted); font-size: .98rem; }

/* Category pills */
.categories {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-bottom: 1.5rem;
}
.categories a {
  padding: .5rem 1rem;
  border-radius: 999px;
  font-size: .88rem;
  background: var(--surface);
  border: 1px solid var(--line);
  color: var(--ink-2);
  font-weight: 500;
}
.categories a.active, .categories a:hover {
  background: var(--ink); color: #fff; border-color: var(--ink);
}

/* Product grid */
.products {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.1rem;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: #c9d3e4; }
.card .thumb {
  /* Square aspect — taller than 4:3 so the portrait-oriented vial photos
     display at a comfortable size with the gradient framing the sides. */
  aspect-ratio: 1 / 1;
  background:
    radial-gradient(circle at 30% 20%, rgba(66,153,225,.16), transparent 55%),
    radial-gradient(circle at 70% 80%, rgba(43,108,176,.12), transparent 55%),
    linear-gradient(135deg, #edf2f7, #e2e8f0);
  display: grid; place-items: center;
  position: relative;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
/* Fit the entire product image inside the thumb. Mobile Safari collapses
   percentage-height grid items inside an aspect-ratio container, so we
   absolutely position the img instead of leaving it as a grid item.
   `object-fit: contain` keeps the full product visible (vials are taller
   than the 4:3 thumb) with the gradient background showing on the sides.
   Overrides the inline styles on the <img>. */
.card .thumb > img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  padding: 1rem;
}
.card .thumb .vial {
  width: 58px; height: 110px;
  border-radius: 10px 10px 22px 22px;
  background: linear-gradient(180deg, rgba(255,255,255,.85) 0 12px, rgba(190, 213, 237, .5) 12px 28px, rgba(255,255,255,.4) 28px 100%);
  border: 1px solid rgba(43,108,176,.18);
  box-shadow: inset 0 0 18px rgba(43,108,176,.08);
  position: relative;
}
.card .thumb .vial::before {
  content: ''; position: absolute; top: -8px; left: 14px; width: 30px; height: 10px;
  background: #4a5568; border-radius: 3px;
}
.card .thumb .vial::after {
  content: ''; position: absolute; top: -4px; left: 10px; width: 38px; height: 6px;
  background: #4299e1; border-radius: 2px;
}
.card .badge {
  position: absolute; top: .75rem; left: .75rem;
  background: var(--accent); color: #fff;
  font-size: .7rem; letter-spacing: .08em; text-transform: uppercase;
  padding: .25rem .55rem; border-radius: 999px; font-weight: 700;
  z-index: 1;
}
.card .badge.sale { background: var(--warn); }
.card .body { padding: 1rem 1.1rem 1.2rem; display: flex; flex-direction: column; gap: .4rem; flex: 1; }
.card .cat { font-size: .72rem; text-transform: uppercase; letter-spacing: .1em; color: var(--accent); font-weight: 700; }
.card h3 { margin: 0; font-size: 1.05rem; }
.card .meta { font-family: var(--mono); font-size: .78rem; color: var(--muted); }
.card .foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; padding-top: .8rem; }
.card .price { font-weight: 700; font-size: 1.05rem; }
.card .price .was { color: var(--muted); font-weight: 500; font-size: .85rem; text-decoration: line-through; margin-right: .35rem; }
.card a.btn-card {
  font-size: .82rem; padding: .5rem .9rem; border-radius: 999px;
  border: 1px solid var(--line); color: var(--ink); font-weight: 600;
}
.card a.btn-card:hover { background: var(--ink); color: #fff; border-color: var(--ink); }

/* Shop layout */
.shop-layout { display: grid; grid-template-columns: 240px 1fr; gap: 2rem; }
.filters {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem;
  align-self: start;
  position: sticky;
  top: 80px;
}
.filters h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--muted); margin-top: 0; }
.filters ul { list-style: none; margin: 0 0 1.2rem; padding: 0; }
.filters li { margin: .3rem 0; }
.filters a { color: var(--ink-2); font-size: .95rem; }
.filters a.active { color: var(--accent); font-weight: 600; }
.shop-toolbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.2rem; gap: 1rem; flex-wrap: wrap; }
.shop-toolbar .count { color: var(--muted); font-size: .9rem; }
.shop-toolbar select, .search input {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: 8px;
  padding: .55rem .8rem;
  font: inherit;
}
.search { display: flex; gap: .5rem; }

/* Product detail */
.product-detail { display: grid; grid-template-columns: 1.1fr 1fr; gap: 3rem; }
.product-detail .visual {
  aspect-ratio: 1/1;
  border-radius: var(--radius);
  background:
    radial-gradient(circle at 30% 20%, rgba(66,153,225,.18), transparent 55%),
    radial-gradient(circle at 70% 80%, rgba(43,108,176,.14), transparent 55%),
    linear-gradient(135deg, #edf2f7, #e2e8f0);
  border: 1px solid var(--line);
  display: grid; place-items: center;
}
.product-detail .visual .vial { width: 110px; height: 220px; border-radius: 14px 14px 40px 40px;
  background: linear-gradient(180deg, rgba(255,255,255,.85) 0 22px, rgba(190,213,237,.5) 22px 52px, rgba(255,255,255,.4) 52px 100%);
  border: 1px solid rgba(43,108,176,.18); box-shadow: inset 0 0 26px rgba(43,108,176,.1);
  position: relative;
}
.product-detail .visual .vial::before {
  content: ''; position: absolute; top: -12px; left: 26px; width: 58px; height: 14px;
  background: #4a5568; border-radius: 4px;
}
.product-detail .visual .vial::after {
  content: ''; position: absolute; top: -6px; left: 20px; width: 70px; height: 8px;
  background: #4299e1; border-radius: 2px;
}
.product-detail h1 { margin-top: 0; }
.product-detail .cat-eyebrow { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); font-weight: 700; }
.product-detail .price-block { display: flex; align-items: baseline; gap: .8rem; margin: 1rem 0 1.5rem; }
.product-detail .price-block .now { font-size: 2rem; font-weight: 700; }
.product-detail .price-block .was { color: var(--muted); text-decoration: line-through; }
.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: .92rem;
}
.spec-table th, .spec-table td {
  padding: .7rem .8rem;
  border-top: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}
.spec-table th { width: 38%; color: var(--muted); font-weight: 500; }
.spec-table td { font-family: var(--mono); font-size: .88rem; color: var(--ink); }
.chip {
  display: inline-flex; gap: .4rem; align-items: center;
  padding: .3rem .7rem; border-radius: 999px;
  background: rgba(43, 108, 176, 0.08);
  color: var(--accent-ink);
  font-size: .78rem; font-weight: 600;
  border: 1px solid rgba(43, 108, 176, 0.18);
}

/* COA table */
.coa-table { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line); }
.coa-table th, .coa-table td { padding: 1rem 1.1rem; text-align: left; border-bottom: 1px solid var(--line); font-size: .92rem; }
.coa-table th { background: #f1f5f9; font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.coa-table tr:last-child td { border-bottom: none; }

/* FAQ */
.faq-list { display: grid; gap: .7rem; }
.faq details {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 1.1rem 1.4rem;
}
.faq details summary { cursor: pointer; font-weight: 600; font-size: 1.03rem; list-style: none; }
.faq details summary::-webkit-details-marker { display: none; }
.faq details summary::after { content: '+'; float: right; font-size: 1.3rem; color: var(--muted); }
.faq details[open] summary::after { content: '−'; }
.faq details p { margin-top: .8rem; color: var(--ink-2); }

/* Contact / legal */
.prose { max-width: 760px; }
.prose h2 { margin-top: 2.5rem; }
.prose ul { padding-left: 1.2rem; color: var(--ink-2); }
.prose li { margin: .3rem 0; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.contact-grid .info p { margin: .3rem 0; color: var(--ink-2); }
.contact-grid form { background: var(--surface); border: 1px solid var(--line); padding: 1.5rem; border-radius: var(--radius); display: grid; gap: .8rem; }
.contact-grid label { font-size: .85rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.contact-grid input, .contact-grid textarea {
  width: 100%; padding: .75rem .9rem; border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: var(--bg);
}
.contact-grid textarea { min-height: 140px; resize: vertical; }

/* Footer */
footer.site {
  background: #1a365d;
  color: #a0aec0;
  padding: 3.5rem 0 1.5rem;
  margin-top: 4rem;
}
footer .cols {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 2rem;
}
footer h4 {
  color: #fff; font-size: .8rem; letter-spacing: .14em;
  text-transform: uppercase; margin-bottom: 1rem;
}
footer a { color: #a0aec0; display: block; padding: .25rem 0; font-size: .93rem; }
footer a:hover { color: #63b3ed; }
footer .brand-col p { font-size: .9rem; color: #77879f; max-width: 320px; }
footer .bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,.08);
  display: flex; justify-content: space-between; gap: 1rem;
  color: #77879f; font-size: .82rem; flex-wrap: wrap;
}
footer .disclaimer {
  margin-top: 1.5rem;
  padding: 1.2rem;
  background: rgba(255,255,255,.03);
  border: 1px solid rgba(255,255,255,.06);
  border-radius: var(--radius);
  font-size: .78rem;
  color: #77879f;
  line-height: 1.65;
}

/* Auth pages */
.auth-page {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
.auth-col {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2rem;
}
.auth-col h2 { color: var(--accent); margin-top: 0; }
.auth-form { display: grid; gap: .9rem; }
.auth-form .field label {
  display: block; font-size: .82rem; text-transform: uppercase;
  letter-spacing: .08em; color: var(--muted); margin-bottom: .35rem;
}
.auth-form .field input {
  width: 100%; padding: .75rem .9rem;
  border: 1px solid var(--line); border-radius: 8px;
  font: inherit; background: var(--bg);
}
.auth-form .field input:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px rgba(43,108,176,.12); }
.auth-form .field-row { display: flex; align-items: center; gap: .5rem; }
.auth-form .check { font-size: .9rem; color: var(--ink-2); display: flex; align-items: center; gap: .4rem; cursor: pointer; }
.auth-form .forgot { font-size: .88rem; color: var(--accent); margin-top: .3rem; }
.auth-form .hint { font-size: .85rem; color: var(--muted); margin: 0; }
.auth-error {
  background: #fef2f2; border: 1px solid #fecaca; color: #991b1b;
  border-radius: 8px; padding: .75rem 1rem; font-size: .88rem;
}
.auth-error p { margin: .2rem 0; color: inherit; }
.auth-divider {
  display: flex; align-items: center; gap: 1rem;
  margin: 1.25rem 0; color: var(--muted); font-size: .85rem;
}
.auth-divider::before, .auth-divider::after {
  content: ''; flex: 1; height: 1px; background: var(--line);
}
.social-buttons { display: grid; gap: .6rem; }
.btn-social {
  display: flex; align-items: center; gap: .7rem; justify-content: center;
  padding: .7rem 1rem; border-radius: 8px;
  font-size: .92rem; color: var(--ink); border: 1px solid var(--line);
  background: var(--surface); transition: border-color .15s, background .15s;
}
.btn-social:hover { border-color: var(--ink); background: #f8fafc; color: var(--ink); }
.btn-social-microsoft { background: #2f2f2f; color: #fff; border-color: #2f2f2f; }
.btn-social-microsoft:hover { background: #1a1a1a; color: #fff; border-color: #1a1a1a; }

/* Logged-out hero CTA */
.hero-auth-cta {
  margin-top: 1.5rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  max-width: 520px;
}
.hero-auth-cta .lock-icon {
  width: 48px; height: 48px; border-radius: 50%;
  background: rgba(43,108,176,.1); display: grid; place-items: center;
  flex-shrink: 0;
}
.hero-auth-cta .lock-icon svg { width: 22px; height: 22px; color: var(--accent); }
.hero-auth-cta p { margin: 0; font-size: .92rem; color: var(--ink-2); }

/* Cart link in nav */
.cart-link {
  position: relative;
  display: flex;
  align-items: center;
  color: var(--ink-2);
}
.cart-link:hover { color: var(--ink); }
.cart-badge {
  position: absolute;
  top: -6px; right: -8px;
  background: var(--accent);
  color: #fff;
  font-size: .65rem;
  font-weight: 700;
  width: 18px; height: 18px;
  border-radius: 50%;
  display: grid; place-items: center;
  line-height: 1;
}

/* Messages toast */
.messages { list-style:none; margin:0; padding:0; }
.messages li {
  padding: .75rem 1.1rem;
  border-radius: 8px;
  margin-bottom: .5rem;
  font-size: .92rem;
}
.messages .success { background:#ecfdf5; border:1px solid #a7f3d0; color:#065f46; }
.messages .info { background:#eff6ff; border:1px solid #bfdbfe; color:#1e40af; }
.messages .warning { background:#fffbeb; border:1px solid #fde68a; color:#92400e; }
.messages .error { background:#fef2f2; border:1px solid #fecaca; color:#991b1b; }

/* Cart page */
.cart-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  align-items: start;
}
.cart-table-wrap { overflow-x: auto; }
.cart-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}
.cart-table th, .cart-table td {
  padding: .9rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  font-size: .92rem;
  vertical-align: middle;
}
.cart-table th {
  background: #f1f5f9;
  font-size: .78rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
}
.cart-table tr:last-child td { border-bottom: none; }
.cart-remove {
  background: none; border: none; font-size: 1.3rem;
  color: var(--muted); cursor: pointer; padding: .2rem .4rem;
}
.cart-remove:hover { color: #991b1b; }
.cart-product { display: flex; align-items: center; gap: .8rem; color: var(--ink); }
.cart-product-name { font-weight: 600; }
.cart-product-size { font-size: .82rem; color: var(--muted); font-family: var(--mono); }
.qty-form { display: flex; align-items: center; gap: 0; }
.qty-btn {
  width: 32px; height: 32px;
  border: 1px solid var(--line);
  background: var(--bg);
  font-size: 1rem;
  cursor: pointer;
  display: grid; place-items: center;
}
.qty-btn:first-child { border-radius: 6px 0 0 6px; }
.qty-btn:last-child { border-radius: 0 6px 6px 0; }
.qty-btn:hover { background: var(--line); }
.qty-input {
  width: 42px; height: 32px;
  text-align: center;
  border: 1px solid var(--line);
  border-left: none; border-right: none;
  font: inherit; font-size: .9rem;
  -moz-appearance: textfield;
}
.qty-input::-webkit-inner-spin-button { display:none; }
.line-total { font-weight: 600; }

.cart-summary {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.cart-summary h3 { margin-top:0; }
.summary-table { width: 100%; border-collapse: collapse; }
.summary-table th, .summary-table td {
  padding: .7rem 0;
  border-bottom: 1px solid var(--line);
  font-size: .92rem;
  text-align: left;
}
.summary-table th { color: var(--muted); font-weight: 500; }
.summary-table .total-row th, .summary-table .total-row td {
  padding-top: 1rem;
  font-size: 1.05rem;
  border-bottom: none;
}

/* Checkout page */
.checkout-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 2rem;
  align-items: start;
}
.checkout-forms { display: grid; gap: 1.5rem; }
.checkout-section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.checkout-section h3 { margin-top: 0; }
.checkout-section .field { margin-bottom: .8rem; }
.checkout-section .field label {
  display: block; font-size: .82rem; text-transform: uppercase;
  letter-spacing: .06em; color: var(--muted); margin-bottom: .3rem;
}
.checkout-section .field input,
.checkout-section .field select,
.checkout-section .field textarea {
  width: 100%; padding: .65rem .8rem;
  border: 1px solid var(--line); border-radius: 6px;
  font: inherit; background: var(--bg);
}
.checkout-section .field input:focus,
.checkout-section .field select:focus,
.checkout-section .field textarea:focus {
  border-color: var(--accent); outline: none;
  box-shadow: 0 0 0 3px rgba(43,108,176,.1);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; }
.form-row-3 { grid-template-columns: 1fr 1fr 1fr; }

.order-summary {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: sticky;
  top: 80px;
}
.order-summary h3 { margin-top: 0; }
.shipping-advisory {
  background: rgba(43,108,176,.05);
  border: 1px solid rgba(43,108,176,.12);
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1rem;
  font-size: .85rem;
  color: var(--ink-2);
}
.shipping-advisory strong { color: var(--ink); font-size:.88rem; }
.shipping-advisory p { margin: .4rem 0 0; }

.payment-section { margin-top: 1.2rem; }
.payment-section h4 { margin-bottom: .6rem; }
.payment-option {
  display: block;
  padding: .8rem 1rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: .5rem;
  cursor: pointer;
  font-weight: 500;
  font-size: .95rem;
}
.payment-option:hover { border-color: var(--accent); }
.payment-option input[type="radio"] { margin-right: .5rem; }
.payment-desc {
  display: block;
  font-weight: 400;
  font-size: .82rem;
  color: var(--muted);
  margin-top: .3rem;
  margin-left: 1.5rem;
}

.ruo-ack {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(43,108,176,.05);
  border: 1px solid rgba(43,108,176,.15);
  border-radius: 8px;
}
.ruo-ack .check {
  font-size: .88rem; color: var(--ink-2); display: flex; align-items: flex-start; gap: .5rem;
}
.ruo-ack input[type="checkbox"] { margin-top: .2rem; }

@media (max-width: 960px) {
  .auth-page { grid-template-columns: 1fr; }
  .values .grid { grid-template-columns: repeat(2, 1fr); }
  .products { grid-template-columns: repeat(2, 1fr); }
  .shop-layout { grid-template-columns: 1fr; }
  .filters { position: static; }
  .product-detail { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
  footer .cols { grid-template-columns: 1fr 1fr; }
  .nav { gap: .9rem; }
  .nav a { font-size: .88rem; }
  .cart-layout { grid-template-columns: 1fr; }
  .checkout-layout { grid-template-columns: 1fr; }
  .order-summary { position: static; }
}
@media (max-width: 600px) {
  .products { grid-template-columns: 1fr 1fr; }
  .values .grid { grid-template-columns: 1fr; }
  .nav a:not(.btn) { display: none; }
  footer .cols { grid-template-columns: 1fr; }
  .hero { padding: 3rem 0 2.5rem; }
}