/* ==========================================================================
   U15 — main stylesheet
   Mobile-first. Flat, fast, no frameworks. Single file, single request.
   v1.1.0 — surface refit inspired by the dosply/dosupply B2B parts style:
   softer radii, layered shadows, brand gradients, monospace part numbers,
   tiered "condition + best value" offer block, tinted trust chips.
   ========================================================================== */

:root {
  /* brand */
  --c-primary: #0b4f9e;
  --c-primary-ink: #073a78;
  --c-primary-50: #eef4fb;
  --c-primary-100: #dbe7f6;
  --c-accent: #f2731c;
  --c-accent-ink: #d35e0d;
  --c-accent-50: #fdeee2;

  /* ink / surface */
  --c-ink: #15191f;
  --c-muted: #5b6672;
  --c-line: #e6eaee;
  --c-bg: #ffffff;
  --c-bg-soft: #f6f8fa;

  /* status */
  --c-ok: #1c7c54;
  --c-ok-50: #e6f4ee;
  --c-warn: #b8860b;
  --c-err: #c0392b;

  /* shape & depth */
  --radius: 12px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08);
  --shadow: 0 4px 12px rgba(16, 24, 40, .08), 0 2px 4px rgba(16, 24, 40, .04);
  --shadow-lg: 0 14px 36px rgba(16, 24, 40, .14);

  /* gradients */
  --grad-primary: linear-gradient(135deg, #0b4f9e 0%, #0a3f80 100%);
  --grad-accent: linear-gradient(135deg, #f2731c 0%, #e85f0c 100%);
  --grad-hero: linear-gradient(135deg, #eef4fb 0%, #f6f8fa 55%, #ffffff 100%);

  --shell: 1200px;
  --gap: 20px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

/* ---------- reset / base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--c-ink);
  background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { max-width: 100%; height: auto; display: block; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(1.6rem, 1.2rem + 2vw, 2.4rem); }
h2 { font-size: clamp(1.3rem, 1.1rem + 1vw, 1.75rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1rem; }
ul, ol { margin: 0 0 1rem; padding-left: 1.2rem; }
:focus-visible { outline: 2px solid var(--c-accent); outline-offset: 2px; border-radius: 4px; }
.u15-icon { flex: 0 0 auto; }

/* ---------- utilities ---------- */
.u15-visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.u15-muted { color: var(--c-muted); }
.u15-count {
  display: inline-block; min-width: 1.6em; text-align: center; font-size: .75rem;
  color: var(--c-primary-ink); background: var(--c-primary-50); border-radius: var(--radius-pill);
  padding: 0 .5em; margin-left: .35em; font-weight: 600;
}
.u15-narrow { max-width: 760px; margin-inline: auto; }
/* monospace part-number emphasis (dosupply-style) */
.u15-pn { font-family: var(--mono); font-weight: 700; letter-spacing: .01em; color: var(--c-ink); }
/* divider accent */
.u15-rule { height: 3px; width: 48px; border: 0; border-radius: 3px; background: var(--grad-primary); margin: 0 0 18px; }

/* ---------- layout ---------- */
.u15-shell { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: 16px; }
.u15-section { padding-block: clamp(30px, 5vw, 60px); }
.u15-section--tint { background: var(--c-bg-soft); }
.u15-grid { display: grid; gap: var(--gap); grid-template-columns: 1fr; }
.u15-grid--cards { align-items: stretch; }

/* ---------- buttons ---------- */
.u15-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5em;
  padding: .7em 1.15em; border-radius: var(--radius); border: 1.5px solid transparent;
  font: inherit; font-weight: 600; line-height: 1.1; cursor: pointer; text-align: center;
  transition: background-color .15s, color .15s, border-color .15s, box-shadow .15s, transform .15s;
}
.u15-btn:hover { text-decoration: none; }
.u15-btn:active { transform: translateY(1px); }
.u15-btn--primary { background: var(--grad-primary); color: #fff; box-shadow: 0 1px 2px rgba(11, 79, 158, .25); }
.u15-btn--primary:hover { background: linear-gradient(135deg, #0a3f80, #073a78); color: #fff; box-shadow: 0 6px 16px rgba(11, 79, 158, .3); transform: translateY(-1px); }
.u15-btn--secondary { background: var(--c-primary); color: #fff; }
.u15-btn--secondary:hover { background: var(--c-primary-ink); color: #fff; }
.u15-btn--ghost { background: transparent; color: var(--c-primary); border-color: var(--c-line); }
.u15-btn--ghost:hover { border-color: var(--c-primary); color: var(--c-primary-ink); background: var(--c-primary-50); }
.u15-btn--lg { padding: .85em 1.5em; font-size: 1.05rem; }
.u15-btn--small { padding: .45em .8em; font-size: .85rem; }
.u15-btn--block { width: 100%; }
.u15-iconbtn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; padding: 0; background: transparent; border: 0; border-radius: var(--radius);
  color: var(--c-ink); cursor: pointer; transition: background-color .15s;
}
.u15-iconbtn:hover { background: var(--c-bg-soft); }

/* ---------- skip link ---------- */
.u15-skip { position: absolute; left: -9999px; top: 0; background: #fff; padding: .6em 1em; z-index: 100; border-radius: 0 0 var(--radius) 0; box-shadow: var(--shadow-sm); }
.u15-skip:focus { left: 8px; top: 8px; }

/* ---------- header ---------- */
.u15-header {
  position: sticky; top: 0; z-index: 40; background: rgba(255, 255, 255, .92);
  backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--c-line);
  box-shadow: 0 1px 0 rgba(16, 24, 40, .03), 0 2px 10px rgba(16, 24, 40, .04);
}
.u15-header__inner { display: flex; align-items: center; gap: 16px; min-height: 66px; }
.u15-header__brand { flex: 0 0 auto; }
.u15-brand { font-size: 1.3rem; font-weight: 800; color: var(--c-primary); letter-spacing: -.02em; }
.u15-brand:hover { text-decoration: none; }
.u15-nav { display: none; margin-inline: auto; }
.u15-nav__list { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.u15-nav__list > li > a { display: block; padding: .55em .8em; color: var(--c-ink); font-weight: 500; border-radius: var(--radius); transition: background-color .15s, color .15s; }
.u15-nav__list > li > a:hover { background: var(--c-primary-50); color: var(--c-primary-ink); text-decoration: none; }
.u15-nav__list .sub-menu { display: none; }
.u15-header__actions { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.u15-header__phone { display: none; align-items: center; gap: .4em; font-weight: 600; color: var(--c-ink); }
.u15-header__phone:hover { color: var(--c-primary-ink); }
.u15-header__cta { display: none; }
.u15-header__search { border-top: 1px solid var(--c-line); background: var(--c-bg-soft); padding: 12px 0; }

/* ---------- mobile drawer ---------- */
.u15-drawer { position: fixed; inset: 0 0 0 auto; width: min(86vw, 360px); background: #fff; z-index: 60; box-shadow: -8px 0 28px rgba(16, 24, 40, .14); display: flex; flex-direction: column; }
.u15-drawer__head { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--c-line); }
.u15-drawer__title { font-weight: 700; }
.u15-drawer__nav { padding: 8px 12px; overflow: auto; }
.u15-drawer__list { list-style: none; margin: 0; padding: 0; }
.u15-drawer__list a { display: block; padding: .8em .6em; color: var(--c-ink); border-bottom: 1px solid var(--c-line); }
.u15-drawer__list a:hover { color: var(--c-primary-ink); background: var(--c-primary-50); }
.u15-drawer__foot { padding: 16px; border-top: 1px solid var(--c-line); }
body.u15-lock { overflow: hidden; }

/* ---------- search ---------- */
.u15-search { display: flex; gap: 0; }
.u15-search__input { flex: 1; padding: .75em .95em; border: 1.5px solid var(--c-line); border-right: 0; border-radius: var(--radius) 0 0 var(--radius); font: inherit; transition: border-color .15s, box-shadow .15s; }
.u15-search__input:focus { outline: none; border-color: var(--c-primary); box-shadow: 0 0 0 3px var(--c-primary-50); }
.u15-search__btn { display: inline-flex; align-items: center; justify-content: center; padding: 0 1.1em; background: var(--grad-primary); color: #fff; border: 0; border-radius: 0 var(--radius) var(--radius) 0; cursor: pointer; transition: filter .15s; }
.u15-search__btn:hover { filter: brightness(1.08); }

/* ---------- hero ---------- */
.u15-hero { background: var(--grad-hero); border-bottom: 1px solid var(--c-line); }
.u15-hero__inner { display: grid; gap: 28px; padding-block: clamp(34px, 5vw, 64px); }
.u15-hero__kicker { text-transform: uppercase; letter-spacing: .08em; font-size: .78rem; font-weight: 800; color: var(--c-accent); margin: 0 0 .5em; }
.u15-hero__title { margin: 0 0 .5em; letter-spacing: -.02em; }
.u15-hero__lead { font-size: 1.12rem; color: var(--c-muted); max-width: 60ch; }
.u15-hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 1.1rem 0; }
.u15-hero__contact { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; font-weight: 600; margin: 0; }
.u15-hero__contact a { display: inline-flex; gap: .4em; align-items: center; color: var(--c-ink); }
.u15-hero__contact a:hover { color: var(--c-primary-ink); }
.u15-hero__aside {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 22px; box-shadow: var(--shadow); align-self: start; position: relative; overflow: hidden;
}
.u15-hero__aside::before { content: ""; position: absolute; left: 24px; top: -1px; width: 52px; height: 4px; background: var(--grad-primary); border-radius: 0 0 4px 4px; }
.u15-hero__hint { color: var(--c-muted); font-size: .9rem; margin: .7em 0 0; }

/* ---------- section heading ---------- */
.u15-sechead { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.u15-sechead__kicker { text-transform: uppercase; letter-spacing: .08em; font-size: .76rem; font-weight: 800; color: var(--c-accent); margin: 0 0 .25em; }
.u15-sechead__title { margin: 0; position: relative; padding-bottom: .3em; }
.u15-sechead__title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 52px; height: 3px; border-radius: 3px; background: var(--grad-primary); }
.u15-sechead__link { display: inline-flex; align-items: center; gap: .3em; font-weight: 600; color: var(--c-primary); }
.u15-sechead__link:hover { color: var(--c-primary-ink); }

/* ---------- pillars ---------- */
.u15-pillars { display: grid; gap: var(--gap); grid-template-columns: 1fr; }
.u15-pillar {
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  padding: 24px; transition: box-shadow .2s, transform .2s, border-color .2s;
}
.u15-pillar:hover { box-shadow: var(--shadow); transform: translateY(-3px); border-color: var(--c-primary-100); }
.u15-pillar__icon {
  display: inline-flex; align-items: center; justify-content: center; width: 50px; height: 50px;
  border-radius: 14px; background: var(--c-primary-50); color: var(--c-primary); margin-bottom: .85rem;
}
.u15-pillar__title { margin: 0 0 .35em; }
.u15-pillar__text { color: var(--c-muted); margin: 0 0 .85em; }
.u15-pillar__link { display: inline-flex; align-items: center; gap: .3em; font-weight: 600; color: var(--c-primary); }
.u15-pillar__link:hover { color: var(--c-primary-ink); }

/* ---------- cards ---------- */
.u15-card {
  display: flex; flex-direction: column; border: 1px solid var(--c-line); border-radius: var(--radius-lg);
  overflow: hidden; background: #fff;
  transition: box-shadow .2s, transform .2s, border-color .2s;
}
.u15-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); border-color: var(--c-primary-100); }
.u15-card__media { display: block; background: var(--c-bg-soft); aspect-ratio: 4 / 3; }
.u15-card__img { width: 100%; height: 100%; object-fit: contain; padding: 10px; }
.u15-card__img--placeholder { display: flex; align-items: center; justify-content: center; color: #b9c2cc; }
.u15-card__body { padding: 16px; display: flex; flex-direction: column; flex: 1; }
.u15-card__eyebrow { font-size: .76rem; text-transform: uppercase; letter-spacing: .04em; color: var(--c-muted); margin: 0 0 .35em; }
.u15-card__title { font-size: 1.05rem; margin: 0 0 .4em; }
.u15-card__title a { color: var(--c-ink); font-family: var(--mono); font-weight: 700; letter-spacing: .01em; }
.u15-card:hover .u15-card__title a { color: var(--c-primary); }
.u15-card__text { color: var(--c-muted); font-size: .92rem; margin: 0 0 .8em; flex: 1; }
.u15-card__foot { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: auto; }
.u15-card__price { font-weight: 800; color: var(--c-ink); font-size: 1.05rem; }
.u15-card__stock { font-size: .85rem; color: var(--c-ok); font-weight: 700; }
.u15-card__quote {
  display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px;
  border: 1.5px solid var(--c-line); border-radius: var(--radius); background: #fff; color: var(--c-primary);
  cursor: pointer; transition: border-color .15s, background-color .15s, color .15s;
}
.u15-card__quote:hover { border-color: var(--c-primary); background: var(--c-primary-50); }
.u15-card__meta { font-size: .82rem; color: var(--c-muted); margin: 0; display: flex; gap: .5em; align-items: center; }

/* ---------- brands / chips ---------- */
.u15-brands { display: grid; gap: 12px; grid-template-columns: repeat(2, minmax(0, 1fr)); list-style: none; margin: 0; padding: 0; }
.u15-brands__item a {
  display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 15px 18px;
  background: #fff; border: 1px solid var(--c-line); border-radius: var(--radius); color: var(--c-ink);
  font-weight: 600; transition: border-color .15s, box-shadow .15s, transform .15s, color .15s;
}
.u15-brands__item a:hover { border-color: var(--c-primary); color: var(--c-primary-ink); text-decoration: none; box-shadow: var(--shadow-sm); transform: translateY(-2px); }
.u15-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 20px; }
.u15-chip { display: inline-flex; align-items: center; padding: .45em .9em; border: 1px solid var(--c-line); border-radius: var(--radius-pill); color: var(--c-ink); font-size: .9rem; font-weight: 500; background: #fff; transition: border-color .15s, color .15s, background-color .15s; }
.u15-chip:hover { border-color: var(--c-primary); color: var(--c-primary-ink); text-decoration: none; }
.u15-chip--all { background: var(--grad-primary); color: #fff; border-color: transparent; }
.u15-chip--all:hover { color: #fff; filter: brightness(1.06); }

/* ---------- trust ---------- */
.u15-trust { list-style: none; margin: 0; padding: 0; display: grid; gap: 18px; grid-template-columns: 1fr; }
.u15-trust__item { display: flex; gap: 14px; align-items: flex-start; }
.u15-trust__icon {
  display: inline-flex; align-items: center; justify-content: center; flex: 0 0 auto;
  width: 44px; height: 44px; border-radius: 13px; background: var(--c-primary-50); color: var(--c-primary);
}
.u15-trust__body { display: flex; flex-direction: column; }
.u15-trust__title { display: block; font-weight: 700; color: var(--c-ink); }
.u15-trust__text { display: block; color: var(--c-muted); font-size: .92rem; }
.u15-trust--footer { padding-block: 26px; border-bottom: 1px solid rgba(255, 255, 255, .12); }
.u15-trust--footer .u15-trust__icon { background: rgba(255, 255, 255, .1); color: #9ccbf7; }
.u15-trust--footer .u15-trust__title { color: #fff; }
.u15-trust--footer .u15-trust__text { color: #9fb0c3; }
.u15-trust--wide { max-width: var(--shell); margin-inline: auto; padding: clamp(26px, 4vw, 44px) 16px; }

/* ---------- footer ---------- */
.u15-footer { background: #0f1b2a; color: #cfd8e3; margin-top: 44px; }
.u15-footer a { color: #cfd8e3; }
.u15-footer a:hover { color: #fff; }
.u15-footer__cols { display: grid; gap: 28px; grid-template-columns: 1fr; padding: 34px 0; }
.u15-footer__heading { color: #fff; font-size: 1rem; margin: 0 0 .85em; }
.u15-footer__list { list-style: none; margin: 0; padding: 0; display: grid; gap: .55em; }
.u15-footer__list a { display: flex; align-items: center; justify-content: space-between; }
.u15-footer__list .u15-count { color: #9ccbf7; background: rgba(156, 203, 247, .14); }
.u15-footer__tagline { color: #9fb0c3; }
.u15-footer__note { border-top: 1px solid rgba(255, 255, 255, .12); padding-top: 16px; font-size: .85rem; color: #9fb0c3; }
.u15-footer__bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; border-top: 1px solid rgba(255, 255, 255, .12); padding: 16px 0; flex-wrap: wrap; }
.u15-footer__copy { margin: 0; font-size: .85rem; color: #9fb0c3; }
.u15-totop { display: inline-flex; align-items: center; gap: .3em; background: transparent; border: 1px solid rgba(255, 255, 255, .25); color: #fff; border-radius: var(--radius); padding: .45em .85em; cursor: pointer; transition: background-color .15s; }
.u15-totop:hover { background: rgba(255, 255, 255, .1); }
.u15-contact { list-style: none; margin: 0; padding: 0; display: grid; gap: .55em; }
.u15-contact li { display: flex; align-items: flex-start; gap: .5em; }
.u15-contact .u15-icon { margin-top: 3px; color: #9ccbf7; }
.u15-contact--block li span { display: flex; flex-direction: column; }

/* ---------- breadcrumb ---------- */
.u15-breadcrumb { font-size: .85rem; margin-bottom: 16px; }
.u15-breadcrumb__list { list-style: none; display: flex; flex-wrap: wrap; gap: .4em; margin: 0; padding: 0; color: var(--c-muted); align-items: center; }
.u15-breadcrumb__item:not(:last-child)::after { content: "/"; margin-left: .4em; color: #b9c2cc; }
.u15-breadcrumb__item.is-current { color: var(--c-ink); font-weight: 600; }
.u15-breadcrumb__item.is-current a, .u15-breadcrumb__item.is-current { background: var(--c-primary-50); padding: .1em .5em; border-radius: var(--radius-pill); }

/* ---------- product page ---------- */
.u15-product__top { display: grid; gap: 28px; padding-block: 10px 26px; }
.u15-product__media { position: relative; background: var(--c-bg-soft); border: 1px solid var(--c-line); border-radius: var(--radius-lg); padding: 18px; }
.u15-product__img { width: 100%; max-height: 440px; object-fit: contain; }
.u15-product__img--placeholder { display: flex; align-items: center; justify-content: center; min-height: 280px; color: #b9c2cc; }
.u15-product__pdf { display: inline-flex; align-items: center; gap: .4em; margin-top: 12px; font-weight: 600; color: var(--c-primary); }
.u15-product__pdf:hover { color: var(--c-primary-ink); }
.u15-product__eyebrow { text-transform: uppercase; letter-spacing: .05em; font-size: .8rem; color: var(--c-muted); font-weight: 700; margin: 0 0 .35em; }
.u15-product__title { margin: 0 0 .5em; }
.u15-product__id { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-bottom: 14px; font-size: .95rem; align-items: center; }
.u15-product__id-label { color: var(--c-muted); margin-right: .25em; }
.u15-copy { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; margin-left: .3em; border: 1px solid var(--c-line); border-radius: 7px; background: #fff; color: var(--c-muted); cursor: pointer; vertical-align: middle; transition: color .15s, border-color .15s, background-color .15s; }
.u15-copy:hover { color: var(--c-primary); border-color: var(--c-primary); background: var(--c-primary-50); }
.u15-product__rating { display: flex; align-items: center; gap: .5em; margin: 0 0 14px; }
.u15-stars { display: inline-flex; color: #f0a500; }
.u15-stars .u15-icon { fill: currentColor; }
.u15-product__lead { font-size: 1.04rem; }
.u15-product__badges { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 18px; padding: 0; }
.u15-product__badges li { display: inline-flex; align-items: center; gap: .4em; padding: .4em .8em; background: var(--c-primary-50); color: var(--c-primary-ink); border-radius: var(--radius-pill); font-size: .85rem; font-weight: 700; }
.u15-product__badges li .u15-icon { color: var(--c-primary); }
.u15-product__badges li.is-ok { background: var(--c-ok-50); color: var(--c-ok); }
.u15-product__badges li.is-ok .u15-icon { color: var(--c-ok); }
.u15-product__cta { display: flex; flex-wrap: wrap; gap: 12px; }
.u15-product__body { display: grid; gap: 24px; }
.u15-product__panel { border: 1px solid var(--c-line); border-radius: var(--radius-lg); padding: 22px; background: #fff; box-shadow: var(--shadow-sm); }
.u15-panel__title { font-size: 1.2rem; margin: 0 0 .9em; position: relative; padding-bottom: .35em; }
.u15-panel__title::after { content: ""; position: absolute; left: 0; bottom: 0; width: 40px; height: 3px; border-radius: 3px; background: var(--grad-primary); }

/* offers (dosupply-style tiered block) */
.u15-offers { width: 100%; border-collapse: separate; border-spacing: 0; overflow: hidden; border-radius: var(--radius); }
.u15-offers thead th { text-align: left; padding: 12px 14px; border-bottom: 2px solid var(--c-line); font-size: .76rem; text-transform: uppercase; letter-spacing: .05em; color: var(--c-muted); background: var(--c-bg-soft); }
.u15-offers tbody td { text-align: left; padding: 14px; border-bottom: 1px solid var(--c-line); vertical-align: middle; }
.u15-offers tbody tr:last-child td { border-bottom: 0; }
.u15-offers tbody tr:nth-child(even) td { background: var(--c-bg-soft); }
.u15-offers tbody tr.is-best td { background: var(--c-ok-50); }
.u15-offers tbody tr.is-best td:first-child { box-shadow: inset 3px 0 0 var(--c-ok); }
.u15-cond { display: inline-flex; align-items: center; padding: .3em .7em; border-radius: var(--radius-pill); background: var(--c-primary-50); color: var(--c-primary-ink); font-weight: 700; font-size: .85rem; }
.u15-stockpill { display: inline-flex; align-items: center; gap: .35em; font-weight: 700; color: var(--c-ok); }
.u15-besttag { display: inline-flex; align-items: center; gap: .3em; margin-left: .6em; padding: .15em .6em; border-radius: var(--radius-pill); background: var(--c-ok); color: #fff; font-size: .72rem; font-weight: 800; letter-spacing: .02em; white-space: nowrap; }
.u15-price { font-size: 1.18rem; color: var(--c-ink); font-weight: 800; }
.u15-offers__single { font-size: 1.05rem; margin: 0; }
.u15-offers__single .u15-price { color: var(--c-primary-ink); }

/* specs */
.u15-specs { width: 100%; border-collapse: separate; border-spacing: 0; }
.u15-specs th, .u15-specs td { text-align: left; padding: 11px 14px; border-bottom: 1px solid var(--c-line); vertical-align: top; }
.u15-specs tbody tr:nth-child(even) th, .u15-specs tbody tr:nth-child(even) td { background: var(--c-bg-soft); }
.u15-specs th { width: 42%; color: var(--c-muted); font-weight: 600; }
.u15-specs td { font-family: var(--mono); font-size: .94rem; }

/* alt names */
.u15-alts { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.u15-alts li { padding: .4em .75em; background: var(--c-bg-soft); border: 1px solid var(--c-line); border-radius: 8px; font-family: var(--mono); font-size: .86rem; color: var(--c-ink); }

/* faq */
.u15-faq { display: grid; gap: 10px; }
.u15-faq__item { border: 1px solid var(--c-line); border-radius: var(--radius); padding: 0 16px; background: #fff; transition: border-color .15s, box-shadow .15s; }
.u15-faq__item[open] { border-color: var(--c-primary-100); box-shadow: var(--shadow-sm); }
.u15-faq__q { display: flex; align-items: center; justify-content: space-between; gap: 12px; cursor: pointer; font-weight: 600; padding: 15px 0; list-style: none; }
.u15-faq__q::-webkit-details-marker { display: none; }
.u15-faq__item[open] .u15-faq__q .u15-icon { transform: rotate(90deg); color: var(--c-primary); }
.u15-faq__q .u15-icon { transition: transform .15s, color .15s; color: var(--c-muted); }
.u15-faq__a { padding: 0 0 15px; color: var(--c-muted); }

/* content */
.u15-content h2 { margin-top: 1.4em; }
.u15-content h3 { margin-top: 1.2em; }
.u15-content img { border-radius: var(--radius); }
.u15-content table { width: 100%; border-collapse: collapse; }
.u15-content th, .u15-content td { border: 1px solid var(--c-line); padding: 8px 10px; text-align: left; }

/* ---------- forms ---------- */
.u15-form { display: grid; gap: 14px; }
.u15-form__title { margin: 0; }
.u15-form__row { display: grid; gap: 14px; grid-template-columns: 1fr; }
.u15-form__field { margin: 0; display: grid; gap: .35em; }
.u15-form__field label { font-weight: 600; font-size: .92rem; }
.u15-form input[type=text], .u15-form input[type=email], .u15-form input[type=tel],
.u15-form textarea, .u15-form select {
  width: 100%; padding: .7em .85em; border: 1.5px solid var(--c-line); border-radius: var(--radius); font: inherit; background: #fff;
  transition: border-color .15s, box-shadow .15s;
}
.u15-form input:focus, .u15-form textarea:focus, .u15-form select:focus { border-color: var(--c-primary); outline: none; box-shadow: 0 0 0 3px var(--c-primary-50); }
.u15-form__actions { display: flex; align-items: center; gap: 12px; margin: 0; flex-wrap: wrap; }
.u15-form__hint { font-size: .85rem; color: var(--c-muted); }
.u15-form__note { padding: .7em 1em; border-radius: var(--radius); margin: 0; font-weight: 600; }
.u15-form__note--ok { background: rgba(28, 124, 84, .1); color: var(--c-ok); }
.u15-form__note--err { background: rgba(192, 57, 43, .08); color: var(--c-err); }
.u15-hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.u15-req { color: var(--c-err); }
.u15-form__part { margin: 0; }

/* rfq band */
.u15-rfqband { background: var(--grad-primary); color: #fff; border-radius: var(--radius-lg); padding: clamp(26px, 4vw, 44px); display: grid; gap: 24px; box-shadow: var(--shadow); }
.u15-rfqband__title { color: #fff; margin-top: 0; }
.u15-rfqband__copy p { color: rgba(255, 255, 255, .9); }
.u15-rfqband .u15-form__field label { color: #fff; }
.u15-rfqband .u15-form input, .u15-rfqband .u15-form textarea, .u15-rfqband .u15-form select { background: #fff; }
.u15-rfqband__form { background: #fff; border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow); }
.u15-rfqband__form .u15-form__field label { color: var(--c-ink); }

/* ---------- modal ---------- */
.u15-modal { position: fixed; inset: 0; z-index: 80; display: flex; align-items: center; justify-content: center; padding: 16px; }
.u15-modal[hidden] { display: none; }
.u15-modal__backdrop { position: absolute; inset: 0; background: rgba(16, 24, 40, .55); backdrop-filter: blur(2px); }
.u15-modal__dialog { position: relative; background: #fff; border-radius: var(--radius-lg); padding: 26px; width: min(560px, 100%); max-height: 90vh; overflow: auto; box-shadow: var(--shadow-lg); }
.u15-modal__close { position: absolute; top: 10px; right: 10px; }
.u15-modal__title { margin: 0 0 .6em; }
.u15-modal__part { margin: 0 0 12px; color: var(--c-muted); }

/* ---------- pagination ---------- */
.u15-pagination { margin: 28px 0 0; }
.u15-pagination .nav-links { display: flex; flex-wrap: wrap; gap: 6px; }
.u15-pagination .page-numbers { display: inline-flex; align-items: center; justify-content: center; min-width: 40px; height: 40px; padding: 0 .6em; border: 1px solid var(--c-line); border-radius: var(--radius); color: var(--c-ink); font-weight: 600; transition: border-color .15s, color .15s, background-color .15s; }
.u15-pagination .page-numbers.current { background: var(--grad-primary); color: #fff; border-color: transparent; }
.u15-pagination a.page-numbers:hover { border-color: var(--c-primary); color: var(--c-primary-ink); text-decoration: none; background: var(--c-primary-50); }

/* ---------- page / hub / contact / misc ---------- */
.u15-page__head { margin-bottom: 20px; }
.u15-page__media { margin: 0 0 24px; }
.u15-page__img { width: 100%; border-radius: var(--radius-lg); }
.u15-hub__head { margin-bottom: 20px; }
.u15-hub__title { margin-bottom: .3em; }
.u15-hub__intro { color: var(--c-muted); max-width: 70ch; }
.u15-contact-layout { display: grid; gap: 28px; grid-template-columns: 1fr; }
.u15-contact-layout__aside { background: var(--c-bg-soft); border-radius: var(--radius-lg); padding: 24px; align-self: start; border: 1px solid var(--c-line); }
.u15-contact-layout__note { color: var(--c-muted); font-size: .9rem; margin-top: 1em; }
.u15-article__media { margin: 0 0 20px; }
.u15-article__img { width: 100%; border-radius: var(--radius-lg); }
.u15-article__related, .u15-article__cta, .u15-page__cta, .u15-about__cta { margin-top: 28px; }
.u15-404, .u15-empty { text-align: center; padding-block: 60px; }
.u15-404__title, .u15-empty__title { margin-bottom: .3em; }
.u15-widget { margin-bottom: 1.5em; }

/* ---------- responsive ---------- */
@media (min-width: 560px) {
  .u15-form__row { grid-template-columns: 1fr 1fr; }
  .u15-grid--4, .u15-grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .u15-trust { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .u15-pillars { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 860px) {
  .u15-hero__inner { grid-template-columns: 1.6fr 1fr; align-items: center; }
  .u15-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .u15-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .u15-footer__cols { grid-template-columns: 1.6fr 1fr 1fr 1fr; }
  .u15-contact-layout { grid-template-columns: 1.6fr 1fr; }
  .u15-product__top { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); align-items: start; }
  .u15-trust { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .u15-rfqband { grid-template-columns: 1fr 1fr; align-items: center; }
}
@media (min-width: 1000px) {
  .u15-nav { display: block; }
  .u15-header__phone, .u15-header__cta { display: inline-flex; }
  .u15-header__burger { display: none; }
}

/* ---------- motion / print ---------- */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; animation: none !important; }
}
@media (prefers-color-scheme: dark) {
  :root {
    --c-ink: #e8edf2; --c-muted: #9fb0c3; --c-line: #2a3644;
    --c-bg: #0f1720; --c-bg-soft: #16202c; --c-primary: #6fb1f0; --c-primary-ink: #9ccbf7;
    --c-primary-50: #16263a; --c-primary-100: #1d3147;
    --c-ok: #4fb288; --c-ok-50: #16302a;
    --grad-primary: linear-gradient(135deg, #1d6fc4, #15539a);
  }
  body, .u15-header, .u15-hero__aside, .u15-card, .u15-brands__item a, .u15-chip, .u15-modal__dialog,
  .u15-pillar, .u15-product__panel, .u15-product__media, .u15-contact-layout__aside { background: var(--c-bg); }
  .u15-hero { background: var(--c-bg); }
  .u15-btn--ghost { color: var(--c-primary); }
  .u15-footer { background: #0a121b; }
  .u15-offers thead th, .u15-offers tbody tr:nth-child(even) td,
  .u15-specs tbody tr:nth-child(even) th, .u15-specs tbody tr:nth-child(even) td { background: var(--c-bg-soft); }
}