/* =========================================================================
   ALCON Cyber Security — Telecom Security Prototype
   Scoped stylesheet for the Telecom Security section only.
   Design tokens derived from: alconcysec.com (live reference), supplied
   screenshots, and layout-styles.css (typography / heading scale / spacing
   conventions confirmed from the ALCON codebase).
   ========================================================================= */

:root {
  /* Brand color ramp — sampled from the live site hero gradient (orange to
     red/magenta) and the dark nav dropdown panel. */
  --alcon-orange: #f26522;
  --alcon-orange-dark: #d9541a;
  --alcon-red: #e31c5f;
  --alcon-gradient: linear-gradient(135deg, #f47521 0%, #ef4a3d 55%, #e31c5f 100%);
  --alcon-dark: #15151d;
  --alcon-dark-soft: #1f1f29;
  --alcon-ink: #333333;       /* heading color, per layout-styles.css */
  --alcon-body: #4a4a4a;      /* body copy color */
  --alcon-muted: #74747c;
  --alcon-border: #e6e3e0;
  --alcon-bg: #ffffff;
  --alcon-bg-alt: #f7f6f5;
  --alcon-bg-tint: #fdf2ec;   /* faint orange tint for accent panels */
  --alcon-green-check: #55b04d;

  /* Type scale — mirrors layout-styles.css h1–h6 sizes/line-heights */
  --font-body: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-display: "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif;

  --container-width: 1160px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --shadow-card: 0 2px 6px rgba(21, 21, 29, 0.06), 0 12px 28px -18px rgba(21, 21, 29, 0.18);
  --shadow-card-hover: 0 6px 16px -4px rgba(21, 21, 29, 0.16), 0 20px 40px -20px rgba(21, 21, 29, 0.22);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--alcon-body);
  background: var(--alcon-bg);
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--alcon-orange-dark); text-decoration: none; }
a:hover, a:focus { color: var(--alcon-red); }

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  color: var(--alcon-ink);
  margin: 0 0 0.6em;
}

h1 { font-size: 44px; line-height: 1.1; }
h2 { font-size: 32px; letter-spacing: -0.01em; }
h3 { font-size: 21px; }
h4 { font-size: 18px; }

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

ul, ol { margin: 0; padding: 0; }

.section-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 32px;
}

section { padding: 76px 0; }
section + section { border-top: 1px solid var(--alcon-border); }

.section-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--alcon-orange-dark);
  margin-bottom: 14px;
}

.section-heading { margin-bottom: 40px; }
.section-heading--follow-on { margin-top: 48px; }
.section-heading h2 { margin-bottom: 12px; }
.section-heading p { color: var(--alcon-muted); font-size: 17px; }

/* Alternate section background rhythm, echoing the light-gray panel bands
   used between white sections on the live site. */
.tone-alt { background: var(--alcon-bg-alt); }

/* =========================================================================
   Skip link (accessibility)
   ========================================================================= */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--alcon-dark);
  color: #fff;
  padding: 12px 20px;
  z-index: 1000;
}
.skip-link:focus { left: 12px; top: 12px; }

/* =========================================================================
   Header / Navigation
   ========================================================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: #ffffff;
  border-bottom: 1px solid var(--alcon-border);
}

.main-nav {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
}

.nav-logo .mark {
  width: 30px;
  height: 30px;
  flex-shrink: 0;
}

.nav-logo .wordmark {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.nav-logo .wordmark strong {
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--alcon-orange);
}

.nav-logo .wordmark span {
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--alcon-ink);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after { content: ""; display: block; width: 20px; height: 2px; background: var(--alcon-ink); margin: 4px 0; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  list-style: none;
}

.nav-links > li { position: relative; }

.nav-links > li > a {
  color: var(--alcon-ink);
  font-size: 15px;
  font-weight: 500;
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  display: inline-block;
}

.nav-links > li > a:hover,
.nav-links > li.nav-current > a,
.nav-links > li:hover > a {
  color: var(--alcon-orange);
  border-bottom-color: var(--alcon-orange);
}

.nav-cta {
  background: var(--alcon-dark);
  color: #fff !important;
  padding: 10px 20px !important;
  border-radius: var(--radius-sm);
  border-bottom: none !important;
}
.nav-cta:hover { background: var(--alcon-orange); color: #fff !important; }

/* Dropdown */
.nav-dropdown > a::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-left: 6px;
  position: relative;
  top: -2px;
}

.nav-dropdown-menu {
  list-style: none;
  position: absolute;
  top: calc(100% + 10px);
  left: 0;
  min-width: 260px;
  background: var(--alcon-dark);
  border-radius: var(--radius-md);
  padding: 10px;
  box-shadow: 0 20px 40px -12px rgba(0,0,0,0.35);
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity .15s ease, transform .15s ease, visibility .15s ease;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu,
.nav-dropdown.is-open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu li a {
  display: block;
  color: rgba(255,255,255,0.82);
  font-size: 14.5px;
  padding: 10px 14px;
  border-radius: 6px;
}

.nav-dropdown-menu li a:hover,
.nav-dropdown-menu li a.nav-active {
  background: rgba(242,101,34,0.16);
  color: #ffffff;
}

.nav-dropdown-menu li a.nav-active {
  color: var(--alcon-orange);
  font-weight: 600;
}

.nav-dropdown-menu .dropdown-divider {
  height: 1px;
  background: rgba(255,255,255,0.1);
  margin: 8px 6px;
}

/* =========================================================================
   Breadcrumb
   ========================================================================= */
.breadcrumb {
  background: var(--alcon-bg-alt);
  border-bottom: 1px solid var(--alcon-border);
}
.breadcrumb ol {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 12px 32px;
  list-style: none;
  display: flex;
  gap: 8px;
  font-size: 13px;
  color: var(--alcon-muted);
}
.breadcrumb li:not(:last-child)::after { content: "/"; margin-left: 8px; color: var(--alcon-border); }
.breadcrumb a { color: var(--alcon-muted); }
.breadcrumb a:hover { color: var(--alcon-orange-dark); }
.breadcrumb li[aria-current="page"] { color: var(--alcon-ink); font-weight: 600; }

/* =========================================================================
   Buttons
   ========================================================================= */
.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease, color .15s ease;
}

.cta-button-primary {
  background: var(--alcon-dark);
  color: #fff;
}
.cta-button-primary:hover {
  background: var(--alcon-orange);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 10px 24px -10px rgba(242,101,34,0.55);
}

.cta-button-light {
  background: #ffffff;
  color: var(--alcon-ink);
}
.cta-button-light:hover {
  background: var(--alcon-dark);
  color: #fff;
  transform: translateY(-1px);
}

.cta-button-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.65);
  color: #fff;
}
.cta-button-outline:hover {
  background: rgba(255,255,255,0.12);
  border-color: #fff;
}

/* =========================================================================
   Hero
   ========================================================================= */
.hero {
  position: relative;
  background: var(--alcon-gradient);
  color: #fff;
  padding: 96px 0 108px;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 82% 18%, rgba(255,255,255,0.16), transparent 42%),
                     radial-gradient(circle at 8% 92%, rgba(0,0,0,0.14), transparent 45%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 32px;
}

.hero .hero-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  background: rgba(255,255,255,0.16);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 22px;
}

.hero h1 {
  color: #fff;
  font-size: 46px;
  margin-bottom: 18px;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.6;
  color: rgba(255,255,255,0.92);
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

/* Breadcrumb-style trail inside sub-service heroes back to the hub */
.hero-trail {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: rgba(255,255,255,0.78);
  margin-bottom: 20px;
}
.hero-trail a { color: rgba(255,255,255,0.85); font-weight: 600; }
.hero-trail a:hover { color: #fff; }

/* =========================================================================
   Lists with check / bullet marks
   ========================================================================= */
.challenge-list,
.benefits-list,
.industries-list {
  list-style: none;
  display: grid;
  gap: 14px;
}

.challenge-list li,
.benefits-list li {
  position: relative;
  padding-left: 30px;
  background: var(--alcon-bg-alt);
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
  padding: 16px 18px 16px 44px;
}

.challenge-list li::before,
.benefits-list li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 24px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--alcon-orange);
}

.industries-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.industries-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  color: var(--alcon-ink);
  background: #ffffff;
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
}

.industries-list li::before {
  content: "";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--alcon-bg-tint);
  border: 1.5px solid var(--alcon-orange);
}

/* =========================================================================
   Capability cards
   ========================================================================= */
.capability-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.capability-card {
  background: #fff;
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  box-shadow: var(--shadow-card);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.capability-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(242,101,34,0.35);
}

.capability-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--alcon-bg-tint);
  color: var(--alcon-orange-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.capability-icon svg { width: 22px; height: 22px; }

.capability-card h3 {
  font-size: 17px;
  margin-bottom: 10px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--alcon-bg-tint);
}

.capability-card p { color: var(--alcon-muted); font-size: 14.5px; margin: 0; }

/* =========================================================================
   Methodology steps
   ========================================================================= */
.methodology-steps {
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-direction: row;
  justify-content: space-between;
  gap: 20px;
  position: relative;
  margin-top: 20px;
}

.methodology-steps::before {
  content: "";
  position: absolute;
  top: 17px;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--alcon-border);
  z-index: 0;
}

.methodology-steps li {
  counter-increment: step;
  position: relative;
  padding-top: 56px;
  flex: 1;
  font-size: 14.5px;
}

.methodology-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--alcon-gradient);
  color: #fff;
  font-weight: 700;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  box-shadow: 0 0 0 6px var(--alcon-bg-alt);
}

.methodology-steps strong { color: var(--alcon-ink); display: block; margin-bottom: 4px; }

/* =========================================================================
   Capability strip (used on the hub page linking to the specialized pages)
   ========================================================================= */
.service-family {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 22px;
}

.service-family-card .card-img {
  margin: -28px -28px 16px -28px;
  border-radius: calc(var(--radius-md) - 1px) calc(var(--radius-md) - 1px) 0 0;
  overflow: hidden;
}

.service-family-card .card-img img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  transition: transform .3s ease;
}

.service-family-card:hover .card-img img {
  transform: scale(1.05);
}

.service-family-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: #fff;
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-card);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.service-family-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(242,101,34,0.35);
}

.service-family-card .tag {
  display: inline-block;
  align-self: flex-start;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--alcon-orange-dark);
  background: var(--alcon-bg-tint);
  padding: 5px 12px;
  border-radius: 999px;
}

.service-family-card h3 { margin-bottom: 0; font-size: 20px; }
.service-family-card p { color: var(--alcon-muted); font-size: 15px; }

.service-family-card .card-link {
  margin-top: auto;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--alcon-orange);
}

.service-family-card .card-link::after {
  content: ' →';
  transition: transform .2s ease;
  display: inline-block;
}

.service-family-card:hover .card-link::after { transform: translateX(4px); }

/* =========================================================================
   Specific Features Layout (Subpages)
   ========================================================================= */
.specific-features {
  display: flex;
  gap: 40px;
  align-items: flex-start;
}
.specific-features-img {
  flex: 1;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}
.specific-features-img img {
  width: 100%;
  display: block;
}
.specific-features-content {
  flex: 1;
}
.specific-features-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.specific-feature-item h3 {
  font-size: 19px;
  margin-bottom: 6px;
  color: var(--alcon-ink);
}
.specific-feature-item p {
  color: var(--alcon-muted);
  font-size: 15.5px;
  margin: 0;
  line-height: 1.5;
}
@media (max-width: 900px) {
  .specific-features { flex-direction: column; }
}

/* =========================================================================
   FAQ accordion
   ========================================================================= */
.faq-item {
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  background: #fff;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  color: var(--alcon-ink);
}

.faq-question .icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 1.5px solid var(--alcon-orange);
  position: relative;
}
.faq-question .icon::before,
.faq-question .icon::after {
  content: "";
  position: absolute;
  background: var(--alcon-orange);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.faq-question .icon::before { width: 10px; height: 1.5px; }
.faq-question .icon::after { width: 1.5px; height: 10px; transition: transform .15s ease; }

.faq-item.is-open .faq-question .icon::after { transform: translate(-50%, -50%) scaleY(0); }
.faq-item.is-open .faq-question { border-bottom: 1px solid var(--alcon-border); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .22s ease;
}
.faq-answer p { padding: 4px 22px 20px; color: var(--alcon-muted); font-size: 15px; }

/* No-JS fallback: show all answers if script.js fails to load */
.no-js .faq-answer { max-height: none !important; }
.no-js .faq-question .icon { display: none; }

/* =========================================================================
   MBSS Tabs
   ========================================================================= */
.mbss-tabs {
  display: flex;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.tab-btn {
  background: #ffffff;
  border: 1px solid var(--alcon-border);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15px;
  color: var(--alcon-ink);
  transition: all 0.2s ease;
}
.tab-btn:hover {
  border-color: var(--alcon-orange);
  color: var(--alcon-orange-dark);
}
.tab-btn.active {
  background: var(--alcon-dark);
  color: #fff;
  border-color: var(--alcon-dark);
}
.tab-content {
  position: absolute;
  visibility: hidden;
  opacity: 0;
  pointer-events: none;
  width: 100%;
}
.tab-content.active {
  position: relative;
  visibility: visible;
  opacity: 1;
  pointer-events: auto;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* =========================================================================
   Final CTA band
   ========================================================================= */
.final-cta {
  background: var(--alcon-dark);
  color: #fff;
  text-align: center;
}
.final-cta h2 { color: #fff; }
.final-cta p { color: rgba(255,255,255,0.75); font-size: 17px; margin-bottom: 30px; }
.final-cta .section-container { max-width: 680px; }

/* The primary button defaults to the dark brand color, which disappears
   against this section's own dark background — use the orange gradient
   instead so the CTA stays legible here. */
.final-cta .cta-button-primary {
  background: var(--alcon-gradient);
}
.final-cta .cta-button-primary:hover {
  box-shadow: 0 10px 24px -10px rgba(227,28,95,0.55);
  transform: translateY(-1px);
}

/* =========================================================================
   Why choose / prose sections
   ========================================================================= */
.prose-block p { font-size: 16.5px; }

/* =========================================================================
   Footer
   ========================================================================= */
.site-footer {
  background: var(--alcon-dark);
  color: rgba(255,255,255,0.72);
}

.footer-container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 60px 32px 30px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
}

.footer-column h4 {
  color: #fff;
  font-size: 15px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-column p { font-size: 14.5px; color: rgba(255,255,255,0.62); }

.footer-column ul { list-style: none; display: grid; gap: 10px; }
.footer-column ul a { color: rgba(255,255,255,0.72); font-size: 14.5px; }
.footer-column ul a:hover { color: var(--alcon-orange); }

.footer-copyright {
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  padding: 20px 32px;
  border-top: 1px solid rgba(255,255,255,0.08);
  margin: 0;
}

.prototype-banner {
  background: #fff7ed;
  color: #7a3a0f;
  border-bottom: 1px solid #f3d9bd;
  font-size: 13.5px;
  text-align: center;
  padding: 8px 16px;
}
.prototype-banner strong { color: var(--alcon-orange-dark); }

/* =========================================================================
   Architecture visualization system
   Reusable HTML/CSS components for the architecture diagrams used across
   the homepage, the four service pages, and MBSS. No external library —
   built entirely from existing brand tokens (--alcon-*, --radius-*,
   --shadow-card) so it inherits the site's visual language automatically.
   ========================================================================= */
.arch-diagram {
  background: #fff;
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 32px;
}
.arch-diagram + .arch-diagram { margin-top: 20px; }
.arch-diagram-note {
  margin-top: 18px;
  font-size: 14px;
  color: var(--alcon-muted);
}

/* Flow: a horizontal sequence of nodes connected by arrows. Wraps then
   stacks vertically on narrow screens (see media queries below). */
.arch-flow {
  display: flex;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 10px 0;
  justify-content: center;
}
.arch-flow--wrap-gap { gap: 16px; }

/* Node: the base "box" unit reused across every diagram type. */
.arch-node {
  background: var(--alcon-bg-alt);
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  min-width: 150px;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 3px;
}
.arch-node-title { font-family: var(--font-display); font-weight: 600; color: var(--alcon-ink); font-size: 14.5px; }
.arch-node-sub { font-size: 12.5px; color: var(--alcon-muted); }

.arch-node--sm { min-width: 120px; padding: 12px 14px; }
.arch-node--accent { background: var(--alcon-bg-tint); border-color: rgba(242,101,34,0.35); }
.arch-node--dark { background: var(--alcon-dark); border-color: var(--alcon-dark); }
.arch-node--dark .arch-node-title { color: #fff; }
.arch-node--dark .arch-node-sub { color: rgba(255,255,255,0.65); }

/* Link variant: nodes that double as navigation to a relevant page. */
a.arch-node--link {
  color: inherit;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
a.arch-node--link:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
  border-color: var(--alcon-orange);
}
a.arch-node--link:hover .arch-node-title { color: var(--alcon-orange-dark); }

/* Group: stack two or more related nodes (e.g. RAN anchor + secondary). */
.arch-node-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  justify-content: center;
}
.arch-node-group .arch-node { min-width: 160px; }

/* Arrow / connector between nodes. Rotates to point downward once flows
   stack vertically on mobile. */
.arch-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 12px;
  color: var(--alcon-orange);
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}
.arch-converge {
  text-align: center;
  color: var(--alcon-orange);
  font-size: 22px;
  line-height: 1;
  margin: 6px 0 16px;
}

/* Badge: a small pill used for named security controls. */
.arch-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--alcon-bg-tint);
  color: var(--alcon-orange-dark);
  border: 1px solid rgba(242,101,34,0.3);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 600;
  transition: border-color .18s ease, color .18s ease;
}
a.arch-badge:hover { border-color: var(--alcon-orange); color: var(--alcon-red); }

/* Zone: a bordered/dashed grouping used for trust-zone style diagrams. */
.arch-zone {
  border: 1.5px dashed rgba(242,101,34,0.4);
  border-radius: var(--radius-md);
  padding: 24px;
  background: var(--alcon-bg-alt);
}
.arch-zone-label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--alcon-orange-dark);
  margin-bottom: 16px;
}
.arch-zone-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.arch-zone-grid .arch-node { background: #fff; text-align: left; align-items: flex-start; }

/* Highlight row: standalone nodes shown without connecting arrows. */
.arch-highlight-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 20px;
}
.arch-highlight-row .arch-node { flex: 1 1 220px; }

/* Layer: a full-width band used for cross-cutting security controls or
   lifecycle control layers. */
.arch-layer {
  margin-top: 24px;
  padding: 22px 26px;
  border-radius: var(--radius-md);
  background: var(--alcon-dark);
}
.arch-layer-label {
  display: block;
  font-size: 12.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #fff;
  margin-bottom: 14px;
}
.arch-layer-controls { display: flex; flex-wrap: wrap; gap: 10px; }
.arch-layer .arch-badge {
  background: rgba(255,255,255,0.08);
  color: #fff;
  border-color: rgba(255,255,255,0.22);
}
a.arch-layer-badge:hover { border-color: var(--alcon-orange); color: var(--alcon-orange); }
.arch-layer .arch-node {
  background: rgba(255,255,255,0.08);
  border-color: rgba(255,255,255,0.2);
}
.arch-layer .arch-node-title { color: #fff; }
.arch-layer .arch-node-sub, .arch-layer-note { color: rgba(255,255,255,0.65); }
.arch-layer-note { font-size: 13px; margin: 14px 0 0; }

/* Signaling-style parallel paths (protocol -> firewall), stacked rows. */
.arch-paths {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.arch-path {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0;
}

/* Baseline grid used on the MBSS page: a domain node paired with the
   controls that apply to it. */
.arch-baseline-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.arch-baseline-row {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 16px 20px;
  background: var(--alcon-bg-alt);
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
}
.arch-baseline-row .arch-node { min-width: 190px; }
.arch-baseline-controls { display: flex; gap: 8px; flex-wrap: wrap; }

/* Architecture Review copy block (replaces the old placeholder). */
.arch-review {
  margin-top: 40px;
  padding: 32px;
  background: #fff;
  border: 1px solid var(--alcon-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.arch-review h3 { margin-bottom: 10px; }
.arch-review ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 20px;
  margin: 18px 0;
}
.arch-review ul li {
  font-size: 14.5px;
  color: var(--alcon-body);
  padding-left: 18px;
  position: relative;
}
.arch-review ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--alcon-orange);
}
.arch-review-scope {
  margin-top: 18px;
  padding-top: 18px;
  border-top: 1px solid var(--alcon-border);
  font-size: 14.5px;
  color: var(--alcon-muted);
}

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 1024px) {
  .capability-cards { grid-template-columns: repeat(2, 1fr); }
  .industries-list { grid-template-columns: repeat(2, 1fr); }
  .service-family { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr 1fr; }
  .methodology-steps { flex-wrap: wrap; }
  .methodology-steps::before { display: none; }

  .arch-diagram { padding: 26px 22px; }
  .arch-review ul { grid-template-columns: 1fr; }
}

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: fixed;
    inset: 68px 0 0 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 24px 24px;
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform .2s ease;
  }
  .nav-links.is-open { transform: translateX(0); }
  .nav-links > li { border-bottom: 1px solid var(--alcon-border); }
  .nav-links > li > a { display: block; padding: 16px 4px; border-bottom: none; }
  .nav-cta { display: block; text-align: center; margin: 14px 0; }

  .nav-dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    display: none;
    margin: 4px 0 10px;
  }
  .nav-dropdown.is-open .nav-dropdown-menu { display: block; }
  .nav-dropdown > a::after { float: right; margin-top: 8px; }

  section { padding: 56px 0; }
  .hero { padding: 64px 0 76px; }
  .hero h1 { font-size: 34px; }
  h2 { font-size: 26px; }

  /* Architecture diagrams: horizontal flows stack vertically, arrows
     rotate to point downward, zones drop to a single column. */
  .arch-flow, .arch-path, .arch-highlight-row {
    flex-direction: column;
    align-items: stretch;
  }
  .arch-node-group { flex-direction: column; }
  .arch-arrow { transform: rotate(90deg); padding: 8px 0; }
  .arch-zone-grid { grid-template-columns: 1fr; }
  .arch-baseline-row { flex-direction: column; align-items: flex-start; }
  .arch-layer { padding: 20px; }
}

@media (max-width: 640px) {
  .section-container { padding: 0 20px; }
  .main-nav { padding: 14px 20px; }
  .capability-cards { grid-template-columns: 1fr; }
  .industries-list { grid-template-columns: 1fr; }
  .footer-container { grid-template-columns: 1fr; padding: 44px 20px 24px; gap: 30px; }
  .hero-content { padding: 0 20px; }
  .hero h1 { font-size: 29px; }
  .hero-subtitle { font-size: 16px; }
  .cta-button { width: 100%; justify-content: center; }
  .hero-actions { flex-direction: column; }

  .arch-diagram { padding: 20px 16px; }
  .arch-node { min-width: 0; width: 100%; }
  .arch-node-group .arch-node { min-width: 0; }
}