/* ============================================================
   CSS Custom Properties
   ============================================================ */
:root {
  --blue:       #1A5FA8;
  --blue-dark:  #0D3B6B;
  --blue-light: #E8F0FA;
  --orange:     #F5A623;
  --red:        #EF4444;
  --dark:       #0D1F3C;
  --text:       #1A2A4A;
  --muted:      #6B7A99;
  --bg:         #F7F9FC;
  --border:     #E2E8F0;
  --white:      #FFFFFF;
  --shadow-sm:  0 2px 12px rgba(26,95,168,0.08);
  --shadow:     0 4px 24px rgba(26,95,168,0.12);
  --shadow-lg:  0 16px 48px rgba(26,95,168,0.18);
  --radius:     16px;
  --radius-sm:  10px;
  --radius-lg:  24px;
  --ease:       0.3s ease;
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
select { appearance: none; -webkit-appearance: none; }
abbr { text-decoration: underline dotted; cursor: help; text-underline-offset: 3px; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
}
section { padding: 100px 0; }

/* ============================================================
   Typography helpers
   ============================================================ */
.section-label {
  display: inline-block;
  background: var(--blue-light);
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 18px;
}
.section-label--orange { background: rgba(245,166,35,.15); color: var(--orange); }
.section-label--light  { background: rgba(255,255,255,.12); color: white; }

.section-title {
  font-size: clamp(28px, 3.8vw, 44px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--dark);
  margin-bottom: 16px;
}
.section-title--light { color: white; }

.section-sub {
  font-size: 17px;
  color: var(--muted);
  max-width: 600px;
  line-height: 1.7;
  margin-bottom: 56px;
}
.section-sub--light { color: rgba(255,255,255,.7); }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: 100px;
  font-size: 15px;
  font-weight: 600;
  transition: all var(--ease);
  white-space: nowrap;
}
.btn--primary { background: var(--blue); color: white; }
.btn--primary:hover { background: var(--blue-dark); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(26,95,168,.4); }
.btn--ghost { background: rgba(255,255,255,.1); color: white; border: 1.5px solid rgba(255,255,255,.35); }
.btn--ghost:hover { border-color: white; background: rgba(255,255,255,.18); }
.btn--white { background: white; color: var(--blue); font-weight: 700; }
.btn--white:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(0,0,0,.18); }
.btn--nav { background: var(--blue); color: white; padding: 10px 22px; font-size: 14px; }
.btn--nav:hover { background: var(--blue-dark); }
.btn--lg { padding: 16px 36px; font-size: 16px; }
.btn--full { width: 100%; justify-content: center; }
.btn svg { width: 17px; height: 17px; flex-shrink: 0; }

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background var(--ease), box-shadow var(--ease);
}
.nav--scrolled {
  background: rgba(255,255,255,.97);
  box-shadow: 0 1px 20px rgba(0,0,0,.08);
  backdrop-filter: blur(16px);
}
.nav__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 28px;
  height: 70px;
  display: flex;
  align-items: center;
  gap: 40px;
}
.nav__logo {
  font-size: 18px;
  font-weight: 900;
  letter-spacing: .08em;
  color: white;
  flex-shrink: 0;
  transition: color var(--ease);
}
.nav--scrolled .nav__logo { color: var(--blue); }

.nav__links {
  display: flex;
  gap: 28px;
  flex: 1;
}
.nav__links a {
  font-size: 14px;
  font-weight: 500;
  color: rgba(255,255,255,.8);
  transition: color var(--ease);
}
.nav__links a:hover { color: white; }
.nav--scrolled .nav__links a { color: var(--muted); }
.nav--scrolled .nav__links a:hover { color: var(--blue); }

.nav__burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 26px;
  margin-left: auto;
  padding: 4px 0;
}
.nav__burger span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: white;
  transition: all var(--ease);
}
.nav--scrolled .nav__burger span { background: var(--dark); }

/* ============================================================
   Hero
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
  overflow: hidden;
}
.hero__svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: block;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(130deg, rgba(13,31,60,.88) 0%, rgba(26,95,168,.55) 55%, rgba(13,31,60,.35) 100%);
}
.hero .container { position: relative; z-index: 1; width: 100%; }
.hero__content {
  max-width: 680px;
  padding: 130px 0 90px;
}
.hero__badge {
  display: inline-flex;
  background: rgba(245,166,35,.18);
  border: 1px solid rgba(245,166,35,.4);
  color: var(--orange);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 24px;
}
.hero__title {
  font-size: clamp(36px, 5.5vw, 66px);
  font-weight: 900;
  line-height: 1.08;
  color: white;
  letter-spacing: -0.025em;
  margin-bottom: 22px;
}
.hero__subtitle {
  font-size: 18px;
  color: rgba(255,255,255,.78);
  line-height: 1.7;
  margin-bottom: 40px;
}
.hero__stats {
  display: flex;
  align-items: center;
  gap: 0;
  margin-bottom: 40px;
  flex-wrap: wrap;
  row-gap: 16px;
}
.hero__stat { display: flex; flex-direction: column; gap: 4px; padding: 0 24px; }
.hero__stat:first-child { padding-left: 0; }
.hero__stat-div { width: 1px; height: 36px; background: rgba(255,255,255,.2); }
.hero__stat-value { font-size: 34px; font-weight: 900; color: var(--orange); line-height: 1; letter-spacing: -0.02em; }
.hero__stat-label { font-size: 12px; color: rgba(255,255,255,.6); font-weight: 500; }
.hero__actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ============================================================
   Problem
   ============================================================ */
.problem { background: var(--dark); padding: 96px 0; }
.problem .section-title { margin-bottom: 12px; }
.problem__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}
.problem__card {
  background: rgba(255,255,255,.055);
  border: 1px solid rgba(255,255,255,.07);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: all var(--ease);
}
.problem__card:hover { background: rgba(255,255,255,.09); border-color: rgba(245,166,35,.25); }
.problem__num {
  font-size: 52px;
  font-weight: 900;
  color: var(--orange);
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.problem__desc { font-size: 14px; color: rgba(255,255,255,.6); line-height: 1.55; }
.problem__illustration {
  width: 100%;
  aspect-ratio: 240 / 130;
  display: block;
  border-radius: 10px;
  margin-bottom: 20px;
  overflow: hidden;
}
.problem__quote {
  position: relative;
  text-align: center;
  font-size: clamp(18px, 2.2vw, 26px);
  font-weight: 700;
  font-style: normal;
  color: #fff;
  line-height: 1.45;
  padding: 28px 48px;
  margin-top: 12px;
  background: rgba(245,166,35,.06);
  border: 1px solid rgba(245,166,35,.18);
  border-top: 3px solid var(--orange);
  border-radius: var(--radius);
}
.problem__quote em {
  color: var(--red);
  font-style: normal;
}

/* ============================================================
   Solution
   ============================================================ */
.solution { background: var(--bg); }
.solution__compare {
  display: grid;
  grid-template-columns: 1fr 72px 1fr;
  gap: 0;
  align-items: center;
  margin-bottom: 72px;
}
.solution__panel {
  background: white;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow);
}
.solution__panel-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 18px;
}
.solution__panel-badge--before { background: #FEE2E2; color: #DC2626; }
.solution__panel-badge--after  { background: #DCFCE7; color: #16A34A; }
.solution__img {
  width: 100%;
  height: 190px;
  object-fit: contain;
  margin-bottom: 18px;
}
.solution__list { display: flex; flex-direction: column; gap: 9px; }
.solution__list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; color: var(--text);
}
.solution__list--bad  li::before { content: '✗'; color: #EF4444; font-weight: 800; font-size: 14px; flex-shrink: 0; margin-top: 1px; }
.solution__list--good li::before { content: '✓'; color: #22C55E; font-weight: 800; font-size: 14px; flex-shrink: 0; margin-top: 1px; }
.solution__arrow { display: flex; align-items: center; justify-content: center; }

.benefits {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.benefit {
  background: white;
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  transition: transform var(--ease), box-shadow var(--ease);
}
.benefit:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.benefit__icon {
  width: 50px; height: 50px;
  background: var(--blue-light);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  color: var(--blue);
  margin-bottom: 18px;
}
.benefit__icon svg { width: 22px; height: 22px; }
.benefit h3 { font-size: 17px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.benefit p  { font-size: 14px; color: var(--muted); line-height: 1.65; }

/* ============================================================
   Industries
   ============================================================ */
.industries { background: white; }
.industries__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.industry-card {
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  background: var(--bg);
  transition: all var(--ease);
}
.industry-card:hover { border-color: var(--blue); box-shadow: var(--shadow); transform: translateY(-3px); background: white; }
.industry-card__icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.industry-card__icon svg { width: 28px; height: 28px; }
.industry-card h3 { font-size: 16px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.industry-card p  { font-size: 14px; color: var(--muted); line-height: 1.6; }

/* ============================================================
   Topology
   ============================================================ */
.topology-section { background: var(--bg); }

.topology__tabs-hint {
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: .07em;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.topology__tabs-hint::after {
  content: '↓';
  display: inline-block;
  animation: hint-bounce .85s ease-in-out infinite alternate;
}
@keyframes hint-bounce {
  from { transform: translateY(0); }
  to   { transform: translateY(3px); }
}
.topology__tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-bottom: 28px;
  width: 100%;
  background: none;
  border: none;
  padding: 0;
  border-radius: 0;
}
.topology__tab {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 18px 10px 14px;
  border-radius: 14px;
  border: 2px solid var(--border);
  background: white;
  color: var(--text);
  text-align: center;
  cursor: pointer;
  transition: border-color .2s, box-shadow .2s, background .2s, color .2s, transform .2s;
  font-size: 14px;
  font-weight: 500;
}
.topology__tab:hover {
  border-color: var(--blue);
  box-shadow: 0 4px 16px rgba(26,95,168,.12);
  transform: translateY(-2px);
}
.topology__tab.active {
  border-color: var(--blue);
  background: var(--blue);
  color: white;
  box-shadow: 0 6px 20px rgba(26,95,168,.22);
}
.topology__tab svg { flex-shrink: 0; }
.topology__tab-icon { width: 36px; height: 36px; object-fit: contain; flex-shrink: 0; border-radius: 8px; }
.topology__tab__title { font-size: 14px; font-weight: 700; line-height: 1.2; }
.topology__tab__desc  { font-size: 11px; opacity: .65; line-height: 1.3; }

.topology__body { position: relative; }
.topology__panel { display: none; }
.topology__panel.active { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; background: white; border-radius: var(--radius-lg); padding: 44px; box-shadow: var(--shadow); }

.topology__visual img {
  width: 100%;
  max-height: 380px;
  object-fit: contain;
}
.topology__info h3 { font-size: 21px; font-weight: 700; color: var(--dark); margin-bottom: 12px; line-height: 1.3; }
.topology__info p  { font-size: 15px; color: var(--muted); line-height: 1.7; margin-bottom: 24px; }

.topo-list { display: flex; flex-direction: column; gap: 12px; }
.topo-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; color: var(--text); line-height: 1.5;
}
.topo-list li::before {
  content: '';
  display: block;
  width: 7px; height: 7px;
  background: var(--orange);
  border-radius: 50%;
  margin-top: 5px;
  flex-shrink: 0;
}

/* ============================================================
   Integration
   ============================================================ */
.integration { background: white; }
.integration__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

.integration__card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px;
}
.integration__card:hover { box-shadow: var(--shadow-lg); }
.integration__card-icon { margin-bottom: 20px; }
.integration__card-icon img,
.integration__card-icon svg { width: 48px; height: 48px; }
.integration__card h3 { font-size: 22px; font-weight: 700; color: var(--dark); margin-bottom: 12px; }
.integration__card p  { font-size: 15px; color: var(--muted); line-height: 1.7; margin-bottom: 28px; }

.integration__card--dark {
  background: linear-gradient(140deg, var(--blue) 0%, var(--blue-dark) 100%);
  border-color: transparent;
}
.integration__card--dark h3 { color: white; }
.integration__card--dark p  { color: rgba(255,255,255,.75); }

.protocol-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 4px;
}
.protocol-badge {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: 12px;
  padding: 12px 8px 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  text-align: center;
  transition: border-color .2s, box-shadow .2s, transform .2s;
  cursor: default;
}
.protocol-badge:hover {
  border-color: var(--blue);
  box-shadow: 0 4px 16px rgba(26,95,168,.10);
  transform: translateY(-2px);
}
.protocol-badge svg { display: block; flex-shrink: 0; }
.protocol-badge--logo { padding: 10px 10px; justify-content: center; }
.protocol-badge--logo svg { width: 100%; height: auto; display: block; }
.protocol-logo { width: 100%; height: auto; max-height: 44px; object-fit: contain; display: block; }
.protocol-badge__name {
  font-size: 11px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}
.protocol-badge--primary {
  background: var(--blue);
  border-color: var(--blue);
}
.protocol-badge--primary .protocol-badge__name { color: white; }
.protocol-badge--custom {
  background: transparent;
  border: 1.5px dashed var(--blue);
  cursor: pointer;
}
.protocol-badge--custom .protocol-badge__name { color: var(--blue); }
.protocol-badge--custom:hover { background: #EEF3FA; }

.cloud-features { display: flex; flex-direction: column; gap: 13px; margin-bottom: 28px; }
.cloud-features li {
  display: flex; align-items: center; gap: 10px;
  font-size: 15px; color: rgba(255,255,255,.9);
}
.cloud-features li svg { width: 16px; height: 16px; flex-shrink: 0; opacity: .9; }

.cloud-pricing {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 24px;
  background: rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
}
.cloud-pricing__label { font-size: 12px; color: rgba(255,255,255,.6); font-weight: 600; text-transform: uppercase; letter-spacing: .06em; margin-right: 4px; }
.cloud-pricing__from  { font-size: 14px; color: rgba(255,255,255,.7); }
.cloud-pricing__price { font-size: 28px; font-weight: 900; color: white; letter-spacing: -0.02em; }
.cloud-pricing__period{ font-size: 13px; color: rgba(255,255,255,.6); }

/* ============================================================
   Dashboard
   ============================================================ */
.dashboard { background: var(--bg); }
.dashboard__layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }

.dashboard__screen {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1.5px solid var(--border);
}
.dashboard__browser-bar {
  background: #F1F5F9;
  padding: 11px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--border);
}
.dashboard__dots { display: flex; gap: 6px; }
.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot--red    { background: #FC615D; }
.dot--yellow { background: #FDBC40; }
.dot--green  { background: #35CD4B; }
.dashboard__url-bar { font-size: 12px; color: var(--muted); margin-left: 10px; font-family: monospace; }
.dashboard__img { width: 100%; display: block; }

.dashboard__features { display: flex; flex-direction: column; gap: 28px; }
.dashboard__feat { display: flex; gap: 18px; align-items: flex-start; }
.dashboard__feat-icon {
  width: 46px; height: 46px;
  background: var(--blue-light);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.dashboard__feat-icon svg { width: 20px; height: 20px; }
.dashboard__feat strong { display: block; font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 5px; }
.dashboard__feat p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ============================================================
   Cases
   ============================================================ */
.cases { background: white; }
.cases__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }

.case-card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: all var(--ease);
}
.case-card:hover { box-shadow: var(--shadow-lg); border-color: var(--blue); transform: translateY(-4px); }
.case-card__num { font-size: 60px; font-weight: 900; color: var(--blue-light); line-height: 1; margin-bottom: 14px; letter-spacing: -0.02em; }
.case-card__tag { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--blue); margin-bottom: 10px; }
.case-card h3 { font-size: 22px; font-weight: 800; color: var(--dark); margin-bottom: 12px; line-height: 1.25; }
.case-card p  { font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 18px; }

.case-results { display: flex; flex-direction: column; gap: 8px; }
.case-results li { display: flex; align-items: flex-start; gap: 8px; font-size: 13px; color: var(--text); font-weight: 500; }
.case-results li::before { content: '✓'; color: #22C55E; font-weight: 800; flex-shrink: 0; }

/* ============================================================
   Works gallery
   ============================================================ */
.works { background: var(--bg); }
.works__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

/* landscape: 2 columns, 3:2 ratio */
.works__item--landscape { grid-column: span 2; aspect-ratio: 3 / 2; }
/* portrait: 1 column, 2:3 ratio */
.works__item--portrait  { grid-column: span 1; aspect-ratio: 2 / 3; }
/* full-width: 4 columns, wide crop */
.works__item--full      { grid-column: span 4; aspect-ratio: 21 / 8; }

.works__item {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  cursor: pointer;
}
.works__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s cubic-bezier(.25,.46,.45,.94);
}
.works__item:hover img { transform: scale(1.06); }
.works__item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(10,22,44,.55) 100%);
  opacity: 0;
  transition: opacity .35s;
}
.works__item:hover::after { opacity: 1; }

/* lightbox */
.lb-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.92);
  z-index: 9000;
  align-items: center;
  justify-content: center;
  cursor: zoom-out;
}
.lb-overlay.open { display: flex; }
.lb-overlay img {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 8px;
  box-shadow: 0 24px 80px rgba(0,0,0,.6);
  cursor: default;
}
.lb-close {
  position: absolute;
  top: 20px;
  right: 24px;
  color: white;
  font-size: 36px;
  line-height: 1;
  cursor: pointer;
  opacity: .7;
  transition: opacity .2s;
}
.lb-close:hover { opacity: 1; }
.lb-prev, .lb-next {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  color: white;
  font-size: 48px;
  line-height: 1;
  cursor: pointer;
  opacity: .6;
  transition: opacity .2s;
  user-select: none;
  padding: 0 20px;
}
.lb-prev:hover, .lb-next:hover { opacity: 1; }
.lb-prev { left: 0; }
.lb-next { right: 0; }

@media (max-width: 900px) {
  .works__grid { grid-template-columns: repeat(4, 1fr); }
  .works__item--full { aspect-ratio: 16 / 7; }
}
@media (max-width: 640px) {
  .works__grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
  .works__item--landscape { grid-column: span 2; aspect-ratio: 3 / 2; }
  .works__item--portrait  { grid-column: span 1; aspect-ratio: 2 / 3; }
  .works__item--full      { grid-column: span 2; aspect-ratio: 3 / 2; }
}

/* ============================================================
   Products
   ============================================================ */
.products { background: var(--bg); }
.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(8, auto);
  column-gap: 24px;
  row-gap: 0;
}

.product-card {
  background: white;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--ease);
  display: grid;
  grid-row: span 8;
  grid-template-rows: subgrid;
  align-content: start;
}
.product-card:hover { box-shadow: var(--shadow-lg); border-color: var(--blue); }

.product-card__media {
  height: 220px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}
.product-card__img {
  max-height: 180px;
  width: auto;
  object-fit: contain;
}
/* Field photo is portrait — rotate to fill landscape card header */
.product-card__media--photo { overflow: hidden; }
.product-card__img--rotated {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 400px;
  height: 400px;
  max-height: none;
  max-width: none;
  object-fit: cover;
  object-position: center 30%;
  transform: translate(-50%, -50%) rotate(-90deg);
}

.product-card__tag {
  display: inline-block;
  background: var(--blue-light);
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: 4px 10px;
  border-radius: 100px;
  margin: 24px 0 12px 28px;
  width: fit-content;
  align-self: start;
}
.product-card__name { font-size: 28px; font-weight: 900; color: var(--dark); margin-bottom: 3px; letter-spacing: -0.02em; padding: 0 28px; }
.product-card__subname { font-size: 12px; color: var(--muted); margin-bottom: 14px; line-height: 1.45; padding: 0 28px; }
.product-card__desc { font-size: 14px; color: var(--text); line-height: 1.7; margin-bottom: 20px; padding: 0 28px; }

.product-card__kpis {
  display: flex;
  gap: 20px;
  padding: 16px 28px;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.kpi { display: flex; flex-direction: column; gap: 2px; }
.kpi__val { font-size: 22px; font-weight: 800; color: var(--blue); line-height: 1; letter-spacing: -0.02em; }
.kpi__key { font-size: 11px; color: var(--muted); font-weight: 500; }

.spec-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  font-size: 13px;
  font-weight: 600;
  color: var(--blue);
  padding: 0 28px 24px;
  align-self: end;
}
.spec-toggle__arrow { width: 18px; height: 18px; transition: transform var(--ease); flex-shrink: 0; }
.spec-toggle.open .spec-toggle__arrow { transform: rotate(180deg); }

.spec-body { display: none; padding: 16px 28px 28px; }
.spec-body.open { display: block; }

.spec-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.spec-table tr:nth-child(even) td { background: var(--bg); }
.spec-table td { padding: 7px 10px; border-radius: 4px; line-height: 1.4; }
.spec-table td:first-child { color: var(--muted); font-weight: 500; width: 44%; }
.spec-table td:last-child  { color: var(--text); font-weight: 600; }
.spec-note { font-size: 12px; color: var(--muted); margin-top: 10px; }

/* ============================================================
   Contact
   ============================================================ */
.contact {
  background: linear-gradient(140deg, var(--dark) 0%, var(--blue-dark) 100%);
  padding: 96px 0;
}
.contact__layout { display: grid; grid-template-columns: 1fr 1.1fr; gap: 72px; align-items: start; }

.contact__details { display: flex; flex-direction: column; gap: 16px; margin-top: 8px; }
.contact__detail {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  font-weight: 500;
  color: rgba(255,255,255,.75);
  transition: color var(--ease);
}
.contact__detail:hover { color: white; }
.contact__detail svg { width: 19px; height: 19px; flex-shrink: 0; opacity: .65; }

.cform {
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}
.cform__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.cform__field { display: flex; flex-direction: column; gap: 5px; margin-bottom: 16px; }
.cform__field label { font-size: 13px; font-weight: 600; color: var(--text); }
.cform__field input,
.cform__field select,
.cform__field textarea {
  padding: 11px 15px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-family: inherit;
  color: var(--text);
  background: var(--bg);
  outline: none;
  transition: border-color var(--ease), background var(--ease);
}
.cform__field input:focus,
.cform__field select:focus,
.cform__field textarea:focus { border-color: var(--blue); background: white; }
.cform__field textarea { resize: vertical; min-height: 100px; }
.cform__note { font-size: 12px; color: var(--muted); text-align: center; margin-top: 12px; line-height: 1.5; }

.cform__success {
  display: none;
  text-align: center;
  padding: 52px 40px;
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}
.cform__success svg { width: 64px; height: 64px; margin: 0 auto 20px; }
.cform__success h3 { font-size: 24px; font-weight: 800; color: var(--dark); margin-bottom: 8px; }
.cform__success p  { font-size: 15px; color: var(--muted); }

/* ============================================================
   Security section
   ============================================================ */
.security-section { background: white; }

.security-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}

.security-card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--ease), box-shadow var(--ease), transform var(--ease);
}
.security-card:hover {
  box-shadow: var(--shadow);
  border-color: var(--blue);
  transform: translateY(-2px);
}

.security-card__icon {
  width: 44px; height: 44px;
  background: var(--blue-light);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
  flex-shrink: 0;
}
.security-card__icon svg { width: 22px; height: 22px; stroke: var(--blue); }

.security-card__title { font-size: 14px; font-weight: 700; color: var(--dark); margin-bottom: 8px; line-height: 1.4; }
.security-card__desc  { font-size: 13px; color: var(--muted); line-height: 1.65; flex: 1; margin-bottom: 14px; }

.security-card__ref {
  font-size: 11px;
  color: var(--muted);
  border-top: 1px solid var(--border);
  padding-top: 10px;
  line-height: 1.6;
}
.security-card__ref a { color: var(--blue); text-decoration: underline; text-underline-offset: 2px; }
.security-card__ref a:hover { color: var(--blue-dark); }

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--dark);
  border-top: 1px solid rgba(255,255,255,.05);
  padding: 56px 0 28px;
}
.footer__top {
  display: grid;
  grid-template-columns: 1.6fr 2fr;
  gap: 64px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,.07);
  margin-bottom: 28px;
}
.footer__logo { margin-bottom: 10px; }
.footer__brand p { font-size: 13px; color: rgba(255,255,255,.45); margin-bottom: 8px; }
.footer__brand span { font-size: 12px; color: rgba(255,255,255,.3); }

.footer__nav { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.footer__col { display: flex; flex-direction: column; gap: 9px; }
.footer__col-title { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .1em; color: rgba(255,255,255,.35); margin-bottom: 5px; }
.footer__col a { font-size: 13px; color: rgba(255,255,255,.6); transition: color var(--ease); }
.footer__col a:hover { color: white; }

.footer__glossary { border-top: 1px solid rgba(255,255,255,.08); padding-top: 20px; margin-bottom: 20px; }
.footer__bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.footer__bottom span { font-size: 12px; color: rgba(255,255,255,.25); }
.footer__privacy-link { font-size: 12px; color: rgba(255,255,255,.25); text-decoration: underline; text-underline-offset: 3px; transition: color var(--ease); }
.footer__privacy-link:hover { color: rgba(255,255,255,.55); }

/* ============================================================
   Dashboard slider
   ============================================================ */
.dslider { margin-bottom: 48px; }

.dslider__viewport {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
  background: var(--bg);
}

.dslider__slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  pointer-events: none;
  transition: opacity .5s ease;
}
.dslider__slide.is-active { opacity: 1; pointer-events: auto; }

.dslider__fullimg { width: 100%; height: 100%; object-fit: contain; display: block; background: var(--bg); }

.dslider__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 14px;
}
.dslider__arrow {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  background: white;
  display: flex; align-items: center; justify-content: center;
  color: var(--muted);
  transition: all var(--ease);
  flex-shrink: 0;
}
.dslider__arrow:hover { border-color: var(--blue); color: var(--blue); box-shadow: var(--shadow-sm); }
.dslider__arrow svg { width: 16px; height: 16px; }
.dslider__dots { display: flex; gap: 8px; align-items: center; }
.dslider__dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  border: none;
  transition: all var(--ease);
}
.dslider__dot.is-active { background: var(--blue); width: 24px; border-radius: 4px; }
.dslider__caption {
  text-align: center;
  font-size: 14px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.55;
  min-height: 1.55em;
}

/* Features grid below slider */
.dashboard__feats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.dashboard__feat-card {
  background: white;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 22px;
  transition: all var(--ease);
}
.dashboard__feat-card:hover { border-color: var(--blue); box-shadow: var(--shadow); }
.dashboard__feat-card .dashboard__feat-icon {
  width: 46px; height: 46px;
  background: var(--blue-light);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 14px;
}
.dashboard__feat-card .dashboard__feat-icon svg { width: 20px; height: 20px; }
.dashboard__feat-card strong { display: block; font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
.dashboard__feat-card p { font-size: 13px; color: var(--muted); line-height: 1.6; }

/* ============================================================
   Mock App UI (dashboard slides 2-5)
   ============================================================ */
.mock-app {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: white;
  font-family: 'Inter', sans-serif;
  font-size: 13px;
  overflow: hidden;
}

/* top nav bar */
.mock-topbar {
  background: var(--dark);
  color: white;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 14px;
  height: 34px;
  flex-shrink: 0;
}
.mock-logo-sm { font-weight: 700; font-size: 11px; letter-spacing: .04em; white-space: nowrap; margin-right: 6px; flex-shrink: 0; }
.mock-nav-items { display: flex; gap: 1px; flex: 1; overflow: hidden; }
.mock-nav-items span { font-size: 11px; padding: 3px 9px; border-radius: 4px; color: rgba(255,255,255,.5); white-space: nowrap; }
.mock-nav-items span.mock-active { background: rgba(255,255,255,.13); color: white; font-weight: 600; }
.mock-user-dot { width: 24px; height: 24px; border-radius: 50%; background: var(--blue); color: white; font-size: 9px; font-weight: 700; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }

/* toolbar below nav */
.mock-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 14px;
  border-bottom: 1px solid var(--border);
  background: white;
  flex-shrink: 0;
  gap: 12px;
}
.mock-toolbar-label { font-size: 12px; font-weight: 600; color: var(--dark); white-space: nowrap; }
.mock-toolbar-right { font-size: 10px; color: var(--muted); white-space: nowrap; }

/* period buttons */
.mock-period { display: flex; gap: 2px; flex-shrink: 0; }
.mock-period button { font-size: 10px; padding: 3px 7px; border: 1px solid var(--border); border-radius: 4px; color: var(--muted); background: white; font-family: inherit; cursor: default; }
.mock-period button.mock-period-active { background: var(--blue); color: white; border-color: var(--blue); font-weight: 600; }

/* chart area */
.mock-chart-wrap { flex: 1; overflow: hidden; padding: 10px 14px 6px; display: flex; flex-direction: column; min-height: 0; }
.mock-chart-svg { flex: 1; width: 100%; min-height: 0; }
.mock-chart-stats { display: flex; gap: 20px; padding: 6px 0 2px; flex-shrink: 0; }
.mock-cstat { display: flex; flex-direction: column; gap: 1px; }
.mock-cstat-val { font-size: 17px; font-weight: 700; color: var(--dark); line-height: 1; }
.mock-cstat-key { font-size: 10px; color: var(--muted); }
.mock-cstat--warn .mock-cstat-val { color: #EF4444; }

/* filter tabs */
.mock-filter-tabs { display: flex; gap: 4px; }
.mock-filter-tabs button { font-size: 11px; padding: 3px 9px; border: 1px solid var(--border); border-radius: 20px; background: white; color: var(--muted); font-family: inherit; cursor: default; display: flex; align-items: center; gap: 3px; }
.mock-filter-tabs button.mock-tab-active { border-color: var(--blue); color: var(--blue); background: var(--blue-light); }
.mock-badge { font-size: 9px; background: var(--border); color: var(--muted); padding: 1px 4px; border-radius: 8px; font-weight: 600; }
.mock-badge--red { background: #FEE2E2; color: #DC2626; }

/* alerts table */
.mock-table { width: 100%; border-collapse: collapse; font-size: 11.5px; }
.mock-table thead tr { border-bottom: 1.5px solid var(--border); }
.mock-table th { text-align: left; padding: 5px 10px; font-size: 10px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; white-space: nowrap; }
.mock-table td { padding: 7px 10px; border-bottom: 1px solid #F1F5F9; color: var(--text); white-space: nowrap; }
.mock-row-crit td { background: #FFF5F5; }
.mock-row-ok td { opacity: .6; }
.mock-tag { font-size: 9px; font-weight: 700; padding: 2px 6px; border-radius: 8px; }
.mock-tag--red    { background: #FEE2E2; color: #DC2626; }
.mock-tag--orange { background: #FFF7ED; color: #EA580C; }
.mock-tag--green  { background: #DCFCE7; color: #16A34A; }
.mock-pagination { font-size: 10px; color: var(--muted); padding: 7px 10px; text-align: right; border-top: 1px solid var(--border); }
.mock-pagination span { color: var(--blue); }

/* map slide */
.mock-app--map .mock-map-body { display: flex; flex: 1; overflow: hidden; }
.mock-map-area { flex: 1; overflow: hidden; background: #E8EEF6; }
.mock-map-panel { width: 150px; flex-shrink: 0; border-left: 1px solid var(--border); padding: 10px; overflow-y: auto; background: white; }
.mock-map-title { font-size: 10px; font-weight: 700; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 8px; display: flex; align-items: center; gap: 5px; }
.mock-map-item { display: flex; align-items: center; gap: 6px; font-size: 10.5px; color: var(--text); padding: 5px 0; border-bottom: 1px solid #F1F5F9; }
.mock-map-item--crit { color: #DC2626; font-weight: 600; }
.mock-map-item--warn { color: #EA580C; }
.mock-sdot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.mock-sdot--green  { background: #22C55E; }
.mock-sdot--orange { background: #F5A623; }
.mock-sdot--red    { background: #EF4444; }

/* analytics slide */
.mock-analytics { flex: 1; padding: 12px 14px 10px; overflow: hidden; display: flex; flex-direction: column; gap: 10px; }
.mock-kpi-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; flex-shrink: 0; }
.mock-kpi { background: var(--bg); border-radius: 8px; padding: 9px 10px; display: flex; flex-direction: column; gap: 2px; }
.mock-kpi--warn { background: #FFF7ED; }
.mock-kpi-val { font-size: 20px; font-weight: 800; color: var(--dark); line-height: 1; }
.mock-kpi--warn .mock-kpi-val { color: #EA580C; }
.mock-kpi-val small { font-size: 12px; font-weight: 600; }
.mock-kpi-key { font-size: 9.5px; color: var(--muted); }
.mock-bars-wrap { flex: 1; min-height: 0; }
.mock-bars-label { font-size: 10px; font-weight: 600; color: var(--muted); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 7px; }
.mock-bars { display: flex; flex-direction: column; gap: 7px; }
.mock-bar-row { display: flex; align-items: center; gap: 7px; font-size: 11px; }
.mock-bar-row > span:first-child { width: 58px; flex-shrink: 0; color: var(--muted); }
.mock-bar-row > span:last-child  { width: 30px; flex-shrink: 0; text-align: right; font-weight: 600; color: var(--text); }
.mock-bar-bg { flex: 1; height: 9px; background: #EEF2F8; border-radius: 5px; overflow: hidden; }
.mock-bar-fill { height: 100%; background: var(--blue); border-radius: 5px; transition: width .6s ease; }
.mock-bar-fill--warn { background: #F5A623; }
.mock-bar-fill--crit { background: #EF4444; }
.mock-export-row { display: flex; align-items: center; gap: 8px; flex-shrink: 0; padding-top: 4px; }
.mock-export-btn { font-size: 11px; padding: 5px 12px; border: 1.5px solid var(--blue); border-radius: 6px; color: var(--blue); font-weight: 600; background: white; font-family: inherit; cursor: default; }
.mock-export-note { font-size: 10px; color: var(--muted); }

/* mnemonic slide */
.mock-mnemo-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 5px 14px;
  border-bottom: 1px solid var(--border);
  background: white;
  flex-shrink: 0;
}
.mock-mnemo-name { font-size: 12px; font-weight: 600; color: var(--dark); flex: 1; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.mock-mnemo-pills { display: flex; gap: 5px; flex-shrink: 0; }
.mock-mnemo-pill { font-size: 10px; font-weight: 600; padding: 2px 7px; border-radius: 10px; white-space: nowrap; }
.mock-mnemo-pill--green  { background: #DCFCE7; color: #16A34A; }
.mock-mnemo-pill--orange { background: #FFF7ED; color: #EA580C; }
.mock-mnemo-pill--red    { background: #FEE2E2; color: #DC2626; }
.mock-mnemo-ts { font-size: 10px; color: var(--muted); flex-shrink: 0; white-space: nowrap; }
.mock-mnemo-body { flex: 1; overflow: hidden; background: #EEF3FA; min-height: 0; }

/* Solution section inline SVGs */
.solution__svg { width: 100%; height: 190px; display: block; margin-bottom: 18px; }

/* Topology visual inline SVGs */
.topo__svg { width: 100%; max-height: 340px; display: block; }

/* ============================================================
   OPI — Pilot testing offer
   ============================================================ */
.opi-section {
  background: var(--bg);
  overflow: hidden;
}
.opi-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: center;
}
.opi-badge {
  display: inline-block;
  background: rgba(26,95,168,.08);
  border: 1px solid rgba(26,95,168,.25);
  color: var(--blue);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.opi-title {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.15;
  color: var(--dark);
  margin-bottom: 16px;
}
.opi-sub {
  font-size: 16px;
  line-height: 1.65;
  color: var(--muted);
  margin-bottom: 32px;
}
.opi-note {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.5;
  margin-top: 14px;
}
.opi-steps { display: flex; flex-direction: column; gap: 0; position: relative; }
.opi-step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  position: relative;
}
.opi-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 19px;
  top: 42px;
  width: 2px;
  height: calc(100% - 44px);
  background: var(--border);
}
.opi-step__num {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--blue-light);
  border: 2px solid var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 800;
  color: var(--blue);
  flex-shrink: 0;
}
.opi-step__body { padding-bottom: 28px; }
.opi-step__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 4px;
}
.opi-step__desc {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.55;
}

/* ============================================================
   Certifications
   ============================================================ */
.certs-section { background: var(--bg); }
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 48px;
}
.cert-card {
  background: white;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: box-shadow var(--ease), transform var(--ease);
}
.cert-card:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
.cert-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 900;
}
.cert-card__standard {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--muted);
}
.cert-card__name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}
.cert-card__desc {
  font-size: 13px;
  color: var(--muted);
  line-height: 1.55;
}

/* ============================================================
   Glossary (footer)
   ============================================================ */
.glossary-toggle {
  background: none;
  border: none;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: rgba(255,255,255,.45);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  margin-top: 20px;
  transition: color .2s;
}
.glossary-toggle:hover { color: rgba(255,255,255,.75); }
.glossary-toggle svg { transition: transform .25s; flex-shrink: 0; transform: rotate(0deg); }
.glossary-toggle.open svg { transform: rotate(90deg); }
.glossary-body {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  margin-top: 0;
}
.glossary-body.open { max-height: 600px; margin-top: 12px; }
.glossary-item {
  font-size: 12px;
  color: rgba(255,255,255,.45);
  line-height: 1.45;
}
.glossary-item strong {
  color: rgba(255,255,255,.7);
  font-weight: 700;
}

/* ============================================================
   Scroll-triggered fade-up
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .65s ease, transform .65s ease;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

.benefits .benefit:nth-child(2),
.industries__grid .industry-card:nth-child(2),
.industries__grid .industry-card:nth-child(5),
.cases__grid .case-card:nth-child(2),
.products__grid .product-card:nth-child(2) { transition-delay: .1s; }

.benefits .benefit:nth-child(3),
.industries__grid .industry-card:nth-child(3),
.industries__grid .industry-card:nth-child(6),
.cases__grid .case-card:nth-child(3),
.products__grid .product-card:nth-child(3) { transition-delay: .2s; }

.industries__grid .industry-card:nth-child(4) { transition-delay: .05s; }

/* ============================================================
   Responsive — Tablet
   ============================================================ */
@media (max-width: 1024px) {
  .topology__panel.active { grid-template-columns: 1fr; gap: 28px; padding: 32px; }
  .dashboard__layout { grid-template-columns: 1fr; }
  .dashboard__screen { max-width: 640px; }
  .contact__layout { grid-template-columns: 1fr; gap: 48px; }
  .dashboard__feats-row { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 900px) {
  .solution__compare { grid-template-columns: 1fr; gap: 20px; }
  .solution__arrow { transform: rotate(90deg); margin: 0 auto; }
  .benefits { grid-template-columns: 1fr; }
  .industries__grid { grid-template-columns: repeat(2, 1fr); }
  .integration__grid { grid-template-columns: 1fr; }
  .cases__grid { grid-template-columns: 1fr; }
  .products__grid { grid-template-columns: 1fr; grid-template-rows: auto; }
  .product-card { grid-row: auto; grid-template-rows: auto; display: flex; flex-direction: column; }
  .footer__top { grid-template-columns: 1fr; gap: 40px; }
  .footer__nav { grid-template-columns: repeat(2, 1fr); }
}

/* ============================================================
   Responsive — Mobile
   ============================================================ */
@media (max-width: 768px) {
  section { padding: 64px 0; }
  .container { padding: 0 18px; }

  /* Nav */
  .nav__links, .btn--nav { display: none; }
  .nav__burger { display: flex; }
  .nav__links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 70px; left: 0; right: 0;
    background: rgba(13,31,60,.97);
    padding: 20px 28px 28px;
    gap: 18px;
    backdrop-filter: blur(16px);
  }
  .nav__links.open a { color: rgba(255,255,255,.9); font-size: 17px; }
  .nav--scrolled .nav__links.open { background: rgba(255,255,255,.98); }
  .nav--scrolled .nav__links.open a { color: var(--text); }

  /* Hero */
  .hero__title { font-size: 34px; }
  .hero__subtitle { font-size: 16px; }
  .hero__stat-value { font-size: 28px; }
  .hero__actions { flex-direction: column; }
  .hero__actions .btn { justify-content: center; }
  .hero__stat { padding: 0 16px; }

  /* Problem */
  .problem__num { font-size: 40px; }

  /* Topology */
  .topology__tabs { grid-template-columns: repeat(2, 1fr); }
  .topology__tab  { font-size: 13px; padding: 14px 8px 10px; gap: 6px; }
  .topology__tab__desc { display: none; }

  /* OPI + Certs */
  .opi-layout { grid-template-columns: 1fr; gap: 40px; }
  .opi-title { font-size: 28px; }
  .certs-grid    { grid-template-columns: repeat(2, 1fr); }
  .security-grid { grid-template-columns: repeat(2, 1fr); }

  /* Cases */
  .cases__grid { grid-template-columns: 1fr; }

  /* Products */
  .products__grid { grid-template-columns: 1fr; }

  /* Contact */
  .cform__row { grid-template-columns: 1fr; }
  .cform { padding: 28px; }
}

@media (max-width: 640px) {
  .problem__grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .industries__grid { grid-template-columns: 1fr; }
  .footer__nav { grid-template-columns: 1fr; }
  .hero__stats { gap: 12px; flex-wrap: wrap; }
  .hero__stat-div { display: none; }
  .hero__stat { padding: 0; }
  .dashboard__feats-row { grid-template-columns: 1fr; }
  .mock-kpi-row { grid-template-columns: repeat(2, 1fr); }
  .mock-nav-items { display: none; }
  .mock-map-panel { width: 120px; }
  .certs-grid    { grid-template-columns: 1fr; }
  .security-grid { grid-template-columns: 1fr; }
  .glossary-body { grid-template-columns: 1fr; }
}