/* ==========================================================================
   OMA Identification Technologies — نظام التصميم الرئيسي
   ========================================================================== */

:root {
  --navy-950: #050b18;
  --navy-900: #081226;
  --navy-850: #0b1730;
  --navy-800: #0f2043;
  --navy-700: #16305f;
  --navy-600: #1d3f7c;

  --blue-500: #1a7fd4;
  --blue-400: #3b9bea;
  --blue-300: #6cbcf5;

  --cyan-400: #2fe3d0;
  --gold-400: #c9a45c;
  --gold-300: #e0c78c;

  --ink-100: #f5f8fc;
  --ink-200: #e3eaf4;
  --ink-300: #c3cee0;
  --ink-400: #9aa8c0;
  --ink-500: #6f7f9b;

  --white: #ffffff;
  --line: rgba(255, 255, 255, .09);
  --line-strong: rgba(255, 255, 255, .16);

  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 4px 14px rgba(3, 10, 24, .18);
  --shadow: 0 18px 48px rgba(3, 10, 24, .35);
  --shadow-lg: 0 34px 80px rgba(3, 10, 24, .48);

  --container: 1240px;
  --header-h: 84px;

  --font: "Tajawal", "Cairo", "Noto Kufi Arabic", "Segoe UI", Tahoma, sans-serif;

  --ease: cubic-bezier(.22, .61, .36, 1);
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--navy-950);
  color: var(--ink-200);
  font-size: 17px;
  line-height: 1.85;
  letter-spacing: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(1100px 620px at 88% -8%, rgba(26, 127, 212, .17), transparent 62%),
    radial-gradient(900px 560px at 4% 8%, rgba(47, 227, 208, .07), transparent 60%);
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--blue-300); text-decoration: none; transition: color .25s var(--ease); }
a:hover { color: var(--cyan-400); }

h1, h2, h3, h4, h5 {
  font-weight: 800;
  line-height: 1.4;
  margin: 0 0 .6em;
  color: var(--white);
  letter-spacing: -.2px;
}

h1 { font-size: clamp(1.85rem, 4vw, 3.35rem); }
h2 { font-size: clamp(1.5rem, 2.9vw, 2.45rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.45rem); }
h4 { font-size: 1.08rem; }

p { margin: 0 0 1.15em; color: var(--ink-300); }

ul, ol { margin: 0 0 1.2em; padding-inline-start: 1.3em; }
li { margin-bottom: .5em; color: var(--ink-300); }

strong { color: var(--white); font-weight: 700; }

::selection { background: rgba(26, 127, 212, .45); color: #fff; }

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 22px;
  position: relative;
  z-index: 1;
}

.section { padding: clamp(56px, 8vw, 110px) 0; position: relative; }
.section--tight { padding: clamp(40px, 5vw, 70px) 0; }
.section--alt { background: linear-gradient(180deg, var(--navy-900), var(--navy-950)); }
.section--panel {
  background: linear-gradient(165deg, var(--navy-850), var(--navy-950));
  border-block: 1px solid var(--line);
}

.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.center { text-align: center; }

/* الشبكات المتجاورة داخل قسم مركزي يجب أن تبقى نصّها بمحاذاة البداية */
.section-head.center ~ .grid .card,
.section-head.center ~ .grid .product-card { text-align: start; }
.mx-auto { margin-inline: auto; }
.lead {
  font-size: clamp(1rem, 1.35vw, 1.13rem);
  color: var(--ink-300);
  max-width: 62ch;
}
.center .lead { margin-inline: auto; }

/* ---------- Eyebrow / section head ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: .8rem;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--cyan-400);
  padding: 7px 15px;
  border: 1px solid rgba(47, 227, 208, .28);
  border-radius: 100px;
  background: rgba(47, 227, 208, .06);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan-400);
  box-shadow: 0 0 12px var(--cyan-400);
}

.section-head { max-width: 780px; margin-bottom: clamp(30px, 4vw, 52px); }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { margin-bottom: 0; }

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: linear-gradient(135deg, var(--blue-500), var(--blue-400));
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 30px;
  border-radius: 100px;
  font-family: inherit;
  font-size: .97rem;
  font-weight: 700;
  color: #fff;
  background: var(--btn-bg);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .3s var(--ease), color .3s var(--ease);
  box-shadow: 0 12px 30px rgba(26, 127, 212, .32);
  white-space: nowrap;
  line-height: 1.4;
  text-align: center;
}
.btn:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 18px 40px rgba(26, 127, 212, .45);
}
.btn svg { width: 17px; height: 17px; flex: 0 0 auto; }

.btn--ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink-100);
  box-shadow: none;
}
.btn--ghost:hover {
  background: rgba(255, 255, 255, .06);
  border-color: var(--cyan-400);
  color: #fff;
  box-shadow: 0 14px 32px rgba(0, 0, 0, .3);
}
.btn--light {
  background: #fff;
  color: var(--navy-900);
  box-shadow: 0 12px 30px rgba(255, 255, 255, .14);
}
.btn--light:hover { color: var(--navy-900); background: var(--ink-100); }
.btn--sm { padding: 11px 22px; font-size: .88rem; }
.btn--block { width: 100%; }

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: .93rem;
  color: var(--cyan-400);
}
.link-arrow svg { width: 15px; height: 15px; transition: transform .3s var(--ease); }
.link-arrow:hover svg { transform: translateX(-5px); }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(5, 11, 24, .82);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: var(--header-h);
}
.brand { display: flex; align-items: center; flex: 0 0 auto; }
.brand img { width: 191px; height: 40px; object-fit: contain; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  position: relative;
  padding: 10px 15px;
  font-size: .96rem;
  font-weight: 600;
  color: var(--ink-300);
  border-radius: 8px;
  transition: color .25s var(--ease), background .25s var(--ease);
}
.nav a::after {
  content: "";
  position: absolute;
  inset-inline: 15px;
  bottom: 4px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan-400), var(--blue-400));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .3s var(--ease);
}
.nav a:hover { color: #fff; background: rgba(255, 255, 255, .04); }
.nav a:hover::after,
.nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { color: #fff; }

.header-cta { display: flex; align-items: center; gap: 12px; }

.nav-toggle {
  display: none;
  width: 46px;
  height: 46px;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  cursor: pointer;
  color: #fff;
  padding: 0;
}
.nav-toggle span {
  position: relative;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: background .2s;
}
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  width: 20px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform .3s var(--ease), top .3s var(--ease);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 6px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { top: 0; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] span::after { top: 0; transform: rotate(-45deg); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  min-height: clamp(560px, 78vh, 760px);
  display: flex;
  align-items: center;
  padding: clamp(60px, 9vw, 120px) 0;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: -2;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transform: scale(1.02);
}
.hero__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to left, rgba(5, 11, 24, .96) 6%, rgba(5, 11, 24, .78) 45%, rgba(5, 11, 24, .52) 100%),
    linear-gradient(to top, var(--navy-950) 0%, transparent 42%);
}
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .035) 1px, transparent 1px);
  background-size: 76px 76px;
  mask-image: radial-gradient(circle at 70% 45%, #000 10%, transparent 72%);
  -webkit-mask-image: radial-gradient(circle at 70% 45%, #000 10%, transparent 72%);
}
.hero__inner { max-width: 780px; }
.hero h1 { margin-bottom: 22px; }
.hero h1 .grad {
  background: linear-gradient(100deg, var(--cyan-400), var(--blue-300) 55%, #fff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lead { margin-bottom: 34px; color: var(--ink-200); }
.hero__actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 44px; }

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  max-width: 620px;
  padding-top: 28px;
  border-top: 1px solid var(--line-strong);
}
.hero__stat b {
  display: block;
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
}
.hero__stat span { font-size: .84rem; color: var(--ink-400); }

/* Page hero (inner pages) */
.page-hero {
  position: relative;
  padding: clamp(58px, 8vw, 110px) 0 clamp(46px, 6vw, 80px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: linear-gradient(160deg, var(--navy-900), var(--navy-950) 70%);
}
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, .03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .03) 1px, transparent 1px);
  background-size: 70px 70px;
  mask-image: radial-gradient(circle at 78% 30%, #000, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 78% 30%, #000, transparent 70%);
  pointer-events: none;
}
.page-hero h1 { margin-bottom: 16px; }
.page-hero .lead { margin-bottom: 0; }

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: .84rem;
  color: var(--ink-400);
  margin-bottom: 20px;
  padding: 0;
  list-style: none;
}
.breadcrumb li { margin: 0; color: var(--ink-400); display: flex; align-items: center; gap: 8px; }
.breadcrumb a { color: var(--ink-300); }
.breadcrumb a:hover { color: var(--cyan-400); }
.breadcrumb li + li::before { content: "‹"; color: var(--ink-500); }

/* ---------- Cards ---------- */
.card {
  position: relative;
  background: linear-gradient(165deg, rgba(255, 255, 255, .055), rgba(255, 255, 255, .015));
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform .35s var(--ease), border-color .35s var(--ease), box-shadow .35s var(--ease), background .35s var(--ease);
  height: 100%;
}
.card:hover {
  transform: translateY(-6px);
  border-color: rgba(67, 175, 240, .38);
  box-shadow: var(--shadow);
  background: linear-gradient(165deg, rgba(255, 255, 255, .08), rgba(255, 255, 255, .02));
}
.card h3 { margin-bottom: 10px; }
.card p { margin-bottom: 0; font-size: .96rem; }

.icon-box {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(150deg, rgba(26, 127, 212, .26), rgba(47, 227, 208, .12));
  border: 1px solid rgba(67, 175, 240, .3);
  color: var(--cyan-400);
  margin-bottom: 20px;
}
.icon-box svg { width: 26px; height: 26px; }

.feature-card__num {
  font-size: .8rem;
  font-weight: 800;
  letter-spacing: 1px;
  color: var(--ink-500);
  margin-bottom: 12px;
  display: block;
}

/* ---------- Product cards ---------- */
.product-card {
  display: flex;
  flex-direction: column;
  background: linear-gradient(170deg, var(--navy-850), var(--navy-900));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease);
  height: 100%;
}
.product-card:hover {
  transform: translateY(-8px);
  border-color: rgba(67, 175, 240, .42);
  box-shadow: var(--shadow-lg);
}
.product-card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: radial-gradient(circle at 50% 40%, #16233c, #0a1424);
}
.product-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .7s var(--ease);
}
.product-card:hover .product-card__media img { transform: scale(1.06); }
.product-card__body {
  padding: 24px 24px 26px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.product-card__body h3 { font-size: 1.16rem; margin-bottom: 8px; }
.product-card__body p { font-size: .93rem; margin-bottom: 18px; flex: 1; }
.product-card__tag {
  position: absolute;
  top: 14px;
  inset-inline-start: 14px;
  z-index: 2;
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .4px;
  padding: 6px 12px;
  border-radius: 100px;
  background: rgba(5, 11, 24, .78);
  border: 1px solid rgba(47, 227, 208, .35);
  color: var(--cyan-400);
  backdrop-filter: blur(8px);
}

/* ---------- Media / gallery ---------- */
.case-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  border: 1px solid var(--line);
  background: var(--navy-850);
  transition: transform .4s var(--ease), border-color .4s var(--ease), box-shadow .4s var(--ease);
}
.case-card:hover { transform: translateY(-6px); border-color: rgba(67, 175, 240, .4); box-shadow: var(--shadow); }
.case-card img { aspect-ratio: 4 / 3; width: 100%; object-fit: cover; transition: transform .7s var(--ease); }
.case-card:hover img { transform: scale(1.05); }
.case-card__cap {
  position: absolute;
  inset-inline: 0;
  bottom: 0;
  padding: 40px 18px 16px;
  font-size: .9rem;
  font-weight: 600;
  color: #fff;
  background: linear-gradient(to top, rgba(5, 11, 24, .95), rgba(5, 11, 24, .55) 55%, transparent);
  line-height: 1.5;
}

.cert-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.cert-card:hover { transform: translateY(-6px) rotate(-.4deg); box-shadow: var(--shadow); }
.cert-card img { width: 100%; aspect-ratio: 500/707; object-fit: cover; }
.cert-card__cap {
  padding: 14px 16px;
  font-size: .9rem;
  font-weight: 700;
  color: var(--navy-900);
  text-align: center;
  border-top: 1px solid #e8edf5;
}

/* ---------- Split (image + text) ---------- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(30px, 5vw, 68px);
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
}
.split__media img { width: 100%; aspect-ratio: 730/526; object-fit: cover; }
.split__media--cert { background: #fff; }
.split__media--cert img { aspect-ratio: 500/707; object-fit: contain; }

.badge-float {
  position: absolute;
  inset-inline-end: 18px;
  bottom: 18px;
  background: rgba(5, 11, 24, .82);
  border: 1px solid rgba(47, 227, 208, .35);
  backdrop-filter: blur(10px);
  border-radius: 12px;
  padding: 12px 18px;
  text-align: center;
}
.badge-float b { display: block; font-size: 1.35rem; color: #fff; line-height: 1.2; }
.badge-float span { font-size: .76rem; color: var(--ink-400); }

/* ---------- Check list ---------- */
.check-list { list-style: none; padding: 0; margin: 0 0 26px; }
.check-list li {
  position: relative;
  padding-inline-start: 34px;
  margin-bottom: 13px;
  color: var(--ink-300);
  font-size: .97rem;
}
.check-list li::before {
  content: "";
  position: absolute;
  inset-inline-start: 0;
  top: .45em;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(47, 227, 208, .13);
  border: 1px solid rgba(47, 227, 208, .4);
}
.check-list li::after {
  content: "";
  position: absolute;
  inset-inline-start: 6px;
  top: .82em;
  width: 8px;
  height: 4px;
  border-inline-start: 2px solid var(--cyan-400);
  border-bottom: 2px solid var(--cyan-400);
  transform: rotate(-45deg);
}

/* ---------- Stats band ---------- */
.stats-band {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stats-band > div {
  background: linear-gradient(170deg, var(--navy-850), var(--navy-900));
  padding: 30px 22px;
  text-align: center;
}
.stats-band b {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  color: #fff;
  font-weight: 800;
  line-height: 1.2;
  background: linear-gradient(100deg, var(--cyan-400), var(--blue-300));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stats-band span { font-size: .85rem; color: var(--ink-400); }

/* ---------- Table ---------- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .02);
  -webkit-overflow-scrolling: touch;
}
table.spec {
  width: 100%;
  border-collapse: collapse;
  min-width: 520px;
  font-size: .94rem;
}
table.spec th,
table.spec td {
  padding: 15px 20px;
  text-align: start;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.spec thead th {
  background: rgba(255, 255, 255, .05);
  color: #fff;
  font-weight: 700;
  font-size: .88rem;
  letter-spacing: .3px;
}
table.spec tbody th {
  color: var(--ink-400);
  font-weight: 600;
  width: 34%;
}
table.spec td { color: var(--ink-200); }
table.spec tbody tr:last-child th,
table.spec tbody tr:last-child td { border-bottom: 0; }
table.spec tbody tr:hover { background: rgba(47, 227, 208, .035); }

/* ---------- Accordion / FAQ ---------- */
.faq-list { display: grid; gap: 14px; }
.faq-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(165deg, rgba(255, 255, 255, .045), rgba(255, 255, 255, .012));
  overflow: hidden;
  transition: border-color .3s var(--ease), background .3s var(--ease);
}
.faq-item[open] { border-color: rgba(67, 175, 240, .38); background: rgba(26, 127, 212, .07); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 58px 20px 22px;
  font-weight: 700;
  font-size: 1.02rem;
  color: var(--white);
  position: relative;
  transition: color .25s var(--ease);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after,
.faq-item summary::before {
  content: "";
  position: absolute;
  inset-inline-end: 22px;
  top: 50%;
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan-400);
  transition: transform .3s var(--ease);
}
.faq-item summary::after { transform: translateY(-50%); }
.faq-item summary::before { transform: translateY(-50%) rotate(90deg); }
.faq-item[open] summary::before { transform: translateY(-50%) rotate(0deg); }
.faq-item summary:hover { color: var(--cyan-400); }
.faq-item__body { padding: 0 22px 22px; }
.faq-item__body p { margin-bottom: .7em; font-size: .95rem; }
.faq-item__body p:last-child { margin-bottom: 0; }

/* ---------- CTA band ---------- */
.cta-band {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: clamp(34px, 5vw, 62px);
  background:
    radial-gradient(700px 320px at 12% 0%, rgba(26, 127, 212, .35), transparent 65%),
    linear-gradient(135deg, var(--navy-800), var(--navy-900));
  border: 1px solid rgba(67, 175, 240, .26);
  text-align: center;
}
.cta-band::after {
  content: "";
  position: absolute;
  inset-inline-start: -80px;
  bottom: -110px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(47, 227, 208, .16), transparent 68%);
  pointer-events: none;
}
.cta-band h2 { margin-bottom: 14px; }
.cta-band p { max-width: 620px; margin: 0 auto 26px; }
.cta-band__actions { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* ---------- Forms ---------- */
.form-panel {
  background: linear-gradient(170deg, var(--navy-850), var(--navy-900));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  padding: clamp(24px, 3.6vw, 40px);
  box-shadow: var(--shadow);
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.field { display: flex; flex-direction: column; gap: 8px; }
.field--full { grid-column: 1 / -1; }
.field label {
  font-size: .88rem;
  font-weight: 700;
  color: var(--ink-200);
}
.field label .req { color: var(--cyan-400); }
.field input,
.field select,
.field textarea {
  width: 100%;
  font-family: inherit;
  font-size: .95rem;
  color: #fff;
  background: rgba(255, 255, 255, .045);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  padding: 13px 16px;
  transition: border-color .25s var(--ease), background .25s var(--ease), box-shadow .25s var(--ease);
  outline: none;
  line-height: 1.6;
}
.field textarea { resize: vertical; min-height: 132px; }
.field select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%239aa8c0' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: left 16px center;
  padding-inline-start: 16px;
  padding-inline-end: 42px;
}
.field select option { background: var(--navy-850); color: #fff; }
.field input::placeholder,
.field textarea::placeholder { color: var(--ink-500); }
.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--blue-400);
  background: rgba(26, 127, 212, .1);
  box-shadow: 0 0 0 4px rgba(26, 127, 212, .16);
}
.form-note { font-size: .82rem; color: var(--ink-500); margin: 14px 0 0; }

.alert {
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 22px;
  font-size: .94rem;
  border: 1px solid;
  display: none;
}
.alert.is-visible { display: block; animation: fadeUp .45s var(--ease); }
.alert--success {
  background: rgba(47, 227, 208, .1);
  border-color: rgba(47, 227, 208, .45);
  color: #b9f7ef;
}
.alert--error {
  background: rgba(232, 92, 92, .1);
  border-color: rgba(232, 92, 92, .45);
  color: #ffc9c9;
}
.alert strong { display: block; color: #fff; margin-bottom: 4px; font-size: 1rem; }

.contact-info-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 16px; }
.contact-info-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .03);
  margin: 0;
}
.contact-info-list .icon-box { margin: 0; width: 44px; height: 44px; flex: 0 0 auto; border-radius: 11px; }
.contact-info-list .icon-box svg { width: 21px; height: 21px; }
.contact-info-list b { display: block; color: #fff; font-size: .95rem; margin-bottom: 2px; }
.contact-info-list span { font-size: .9rem; color: var(--ink-400); line-height: 1.7; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, var(--navy-950), #03070f);
  padding-top: clamp(48px, 6vw, 76px);
  position: relative;
  z-index: 1;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 46px;
}
.footer-brand img { width: 191px; height: 40px; object-fit: contain; margin-bottom: 18px; }
.footer-brand p { font-size: .92rem; color: var(--ink-400); max-width: 34ch; }
.site-footer h4 {
  font-size: .95rem;
  letter-spacing: .4px;
  margin-bottom: 18px;
  color: #fff;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: .92rem; color: var(--ink-400); }
.footer-links a:hover { color: var(--cyan-400); }

.footer-links--contact li { margin-bottom: 14px; }
.footer-links--contact a {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  line-height: 1.7;
}
.footer-links--contact svg {
  width: 16px;
  height: 16px;
  flex: 0 0 16px;
  margin-top: 4px;
  color: var(--cyan-400);
  opacity: .85;
}
.footer-bottom {
  border-top: 1px solid var(--line);
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: space-between;
  align-items: center;
  font-size: .84rem;
  color: var(--ink-500);
}
.footer-bottom p { margin: 0; font-size: .84rem; color: var(--ink-500); }

.social-row { display: flex; gap: 10px; margin-top: 18px; }
.social-row a {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid var(--line-strong);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink-300);
  transition: all .25s var(--ease);
}
.social-row a:hover { border-color: var(--cyan-400); color: var(--cyan-400); background: rgba(47, 227, 208, .08); }
.social-row svg { width: 17px; height: 17px; }

/* ---------- Back to top ---------- */
.to-top {
  position: fixed;
  inset-inline-end: 22px;
  bottom: 22px;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  background: rgba(11, 23, 48, .9);
  backdrop-filter: blur(10px);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all .35s var(--ease);
  z-index: 90;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { background: var(--blue-500); border-color: var(--blue-400); }
.to-top svg { width: 20px; height: 20px; }

/* ---------- Product detail ---------- */
.pd-hero {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: clamp(28px, 4.5vw, 60px);
  align-items: start;
}
.pd-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line-strong);
  background: radial-gradient(circle at 50% 45%, #182743, #0a1424);
  box-shadow: var(--shadow);
  position: sticky;
  top: calc(var(--header-h) + 24px);
}
.pd-media img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.pd-meta { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0 0 20px; }
.pd-meta li {
  font-size: .8rem;
  font-weight: 700;
  padding: 6px 13px;
  border-radius: 100px;
  border: 1px solid var(--line-strong);
  color: var(--ink-300);
  background: rgba(255, 255, 255, .035);
  margin: 0;
}
.pd-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 26px; }

.article h3 { margin-top: 1.6em; margin-bottom: .55em; }
.article h3:first-child { margin-top: 0; }
.article p { font-size: 1rem; }
.article ul { padding-inline-start: 1.2em; }
.article li { font-size: .97rem; }

.info-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 28px 0;
}
.info-strip > div {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  background: rgba(255, 255, 255, .03);
}
.info-strip b { display: block; color: var(--cyan-400); font-size: .82rem; letter-spacing: .5px; margin-bottom: 4px; }
.info-strip span { font-size: .92rem; color: var(--ink-200); }

.steps { counter-reset: step; display: grid; gap: 18px; list-style: none; padding: 0; }
.steps li {
  counter-increment: step;
  position: relative;
  padding-inline-start: 62px;
  min-height: 44px;
  margin: 0;
}
.steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  inset-inline-start: 0;
  top: 0;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: .9rem;
  color: var(--cyan-400);
  background: rgba(47, 227, 208, .08);
  border: 1px solid rgba(47, 227, 208, .3);
}
.steps li b { display: block; color: #fff; margin-bottom: 2px; }
.steps li span { font-size: .93rem; color: var(--ink-400); }

/* ---------- Animation ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

.skip-link {
  position: absolute;
  inset-inline-start: -9999px;
  top: 0;
  background: var(--blue-500);
  color: #fff;
  padding: 12px 20px;
  z-index: 999;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { inset-inline-start: 0; color: #fff; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 34px; }
  .pd-hero { grid-template-columns: 1fr; }
  .pd-media { position: static; }
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stats-band { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  :root { --header-h: 72px; }
  .nav-toggle { display: flex; }
  .header-cta .btn { display: none; }
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding: 16px 22px 26px;
    background: rgba(5, 11, 24, .98);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--line-strong);
    transform: translateY(-14px);
    opacity: 0;
    visibility: hidden;
    transition: all .3s var(--ease);
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    box-shadow: var(--shadow);
  }
  .nav.is-open { transform: none; opacity: 1; visibility: visible; }
  .nav a { padding: 14px 12px; font-size: 1rem; border-bottom: 1px solid var(--line); border-radius: 0; text-align: start; }
  .nav .btn { justify-content: center; }
  .nav a::after { display: none; }
  .nav a[aria-current="page"] { color: var(--cyan-400); }
  .nav .btn { margin-top: 16px; }
  .grid-3, .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .hero { min-height: auto; }
  .hero__bg::after {
    background:
      linear-gradient(to top, rgba(5, 11, 24, .98) 10%, rgba(5, 11, 24, .8) 55%, rgba(5, 11, 24, .62) 100%);
  }
  .site-header .brand img { width: 152px; height: 32px; }
}

@media (max-width: 680px) {
  body { font-size: 16px; }
  .grid-3, .grid-2, .grid-4 { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .hero__stats { grid-template-columns: repeat(3, 1fr); gap: 12px; }
  .hero__stat b { font-size: 1.3rem; }
  .hero__stat span { font-size: .74rem; }
  .hero__actions .btn { flex: 1 1 100%; }
  .info-strip { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .stats-band { grid-template-columns: 1fr 1fr; }
  .cta-band__actions .btn { flex: 1 1 100%; }
  .container { padding-inline: 18px; }
  .to-top { inset-inline-end: 14px; bottom: 14px; }
}