/* =================================================================
   SCALING INTELLIGENCE — Design System
   Brand reference: /assets/img/logo/
   Colors: Midnight Navy #081525, Intelligence Blue #2878FF,
           Electric Cyan #39D5E8, Cloud White #F7F9FC, Graphite #202A35
   Typography: Inter
   ================================================================= */

:root {
  --navy: #081525;
  --blue: #2878FF;
  --cyan: #39D5E8;
  --white: #F7F9FC;
  --graphite: #202A35;

  --navy-soft: #0e1f36;
  --navy-line: rgba(247, 249, 252, 0.12);
  --white-line: rgba(32, 42, 53, 0.1);
  --text-on-navy-muted: rgba(247, 249, 252, 0.72);
  --text-on-white-muted: rgba(32, 42, 53, 0.68);

  --grad-accent: linear-gradient(135deg, var(--blue), var(--cyan));

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;

  --container: 1200px;
  --gap: clamp(1.5rem, 3vw, 3rem);
  --radius: 14px;
  --radius-sm: 8px;

  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast: 0.2s;
  --dur-med: 0.5s;
  --dur-slow: 0.9s;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  background: var(--white);
  color: var(--graphite);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p { margin: 0; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 2px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -60px;
  background: var(--blue);
  color: #fff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--dur-fast) var(--ease);
  font-weight: 600;
}
.skip-link:focus { top: 1rem; }

/* ---------- Typography ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--blue);
}
.eyebrow::before {
  content: '';
  width: 18px;
  height: 2px;
  background: var(--grad-accent);
  border-radius: 2px;
}

h1, h2, h3 { font-weight: 700; letter-spacing: -0.02em; }
.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  margin-top: 0.75rem;
  max-width: 46ch;
}
.section-lede {
  font-size: 1.05rem;
  margin-top: 1rem;
  max-width: 60ch;
  color: var(--text-on-white-muted);
}
.section--dark .section-lede { color: var(--text-on-navy-muted); }
.section-head { margin-bottom: clamp(2.5rem, 5vw, 4rem); }
.section-head.center { text-align: center; margin-left: auto; margin-right: auto; }
.section-head.center .section-title,
.section-head.center .section-lede { margin-left: auto; margin-right: auto; }

/* ---------- Sections ---------- */
section { padding: clamp(4rem, 9vw, 7.5rem) 0; position: relative; }
.section--dark { background: var(--navy); color: var(--white); }
.section--dark h2, .section--dark h3 { color: var(--white); }
.section--light { background: var(--white); color: var(--graphite); }
.section--alt { background: #eef2f8; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--blue);
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(40, 120, 255, 0.55);
}
.btn-primary:hover { background: #1f68e8; box-shadow: 0 10px 30px -6px rgba(40, 120, 255, 0.65); }
.btn-ghost-light {
  background: transparent;
  color: var(--white);
  border-color: var(--navy-line);
}
.btn-ghost-light:hover { border-color: var(--cyan); color: var(--cyan); }
.btn-ghost-dark {
  background: transparent;
  color: var(--graphite);
  border-color: var(--white-line);
}
.btn-ghost-dark:hover { border-color: var(--blue); color: var(--blue); }
.btn-block { width: 100%; }

/* ---------- Logo ---------- */
.logo { display: inline-flex; align-items: center; gap: 0.65rem; }
.logo-mark { width: 34px; height: 30px; flex-shrink: 0; }
.logo-word {
  display: flex;
  flex-direction: column;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.logo-word .l1 { font-size: 1.02rem; color: var(--graphite); }
.logo-word .l2 {
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  color: var(--blue);
  margin-top: 2px;
}
.section--dark .logo-word .l1,
.on-dark .logo-word .l1 { color: var(--white); }
.footer .logo-word .l1 { color: var(--white); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(8, 21, 37, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--navy-line);
  transition: background var(--dur-fast) var(--ease);
}
.site-header.is-scrolled {
  background: rgba(8, 21, 37, 0.96);
}
.site-header .container {
  max-width: 1360px;
}
.site-header .nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.3rem;
  flex-shrink: 0;
}
.nav-links a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-on-navy-muted);
  padding: 0.4rem 0;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--white); border-color: var(--cyan); }
.nav-cta { display: flex; align-items: center; gap: 0.75rem; }
.lang-switch {
  display: inline-flex;
  border: 1px solid var(--navy-line);
  border-radius: 999px;
  overflow: hidden;
  font-size: 0.78rem;
  font-weight: 700;
}
.lang-switch a {
  padding: 0.4rem 0.65rem;
  color: var(--text-on-navy-muted);
}
.lang-switch a[aria-current="true"] { background: var(--blue); color: #fff; }
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--white);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: '';
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  position: relative;
  transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}
.nav-toggle span::before { position: absolute; top: -7px; }
.nav-toggle span::after { position: absolute; top: 7px; }
.nav-toggle[aria-expanded="true"] span { background: transparent; }
.nav-toggle[aria-expanded="true"] span::before { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle[aria-expanded="true"] span::after { transform: rotate(-45deg) translate(5px, -5px); }

@media (max-width: 1310px) {
  .nav-links { position: fixed; inset: 76px 0 auto 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--navy); border-bottom: 1px solid var(--navy-line); padding: 0.5rem 1.5rem 1.5rem; transform: translateY(-8px); opacity: 0; pointer-events: none; transition: transform var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease); }
  .nav-links.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links a { padding: 0.9rem 0; border-bottom: 1px solid var(--navy-line); white-space: normal; font-size: 0.95rem; }
  .nav-cta .btn-primary.desktop-only { display: none; }
  .nav-toggle { display: inline-flex; }
}

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(circle at 82% 18%, rgba(57, 213, 232, 0.14), transparent 45%),
              radial-gradient(circle at 10% 90%, rgba(40, 120, 255, 0.16), transparent 50%),
              var(--navy);
  color: var(--white);
  padding-top: clamp(9rem, 16vw, 11rem);
  padding-bottom: clamp(4rem, 8vw, 6rem);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.3rem, 4.6vw, 3.6rem);
  line-height: 1.08;
  margin-top: 1.1rem;
}
.hero h1 .accent {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-sub {
  margin-top: 1.5rem;
  font-size: 1.1rem;
  color: var(--text-on-navy-muted);
  max-width: 54ch;
}
.hero-pillars {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.75rem;
}
.pillar-chip {
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--navy-line);
  border-radius: 999px;
  color: var(--text-on-navy-muted);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 2.25rem; }

.hero-visual { position: relative; aspect-ratio: 1 / 1; max-width: 480px; margin: 0 auto; }
.hero-visual svg { width: 100%; height: 100%; }
.hv-node { opacity: 0; transform: translateY(10px); animation: hv-in var(--dur-med) var(--ease) forwards; }
.hv-line { stroke-dasharray: 240; stroke-dashoffset: 240; animation: hv-draw 1.6s var(--ease) forwards; }
.hv-bar { transform-box: fill-box; transform-origin: bottom; transform: scaleY(0); animation: hv-grow var(--dur-slow) var(--ease) forwards; }
@keyframes hv-in { to { opacity: 1; transform: translateY(0); } }
@keyframes hv-draw { to { stroke-dashoffset: 0; } }
@keyframes hv-grow { to { transform: scaleY(1); } }
@media (prefers-reduced-motion: reduce) {
  .hv-node, .hv-line, .hv-bar { animation: none !important; opacity: 1; transform: none; stroke-dashoffset: 0; }
}

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 340px; }
}

/* ---------- Scroll reveal ---------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.is-visible { opacity: 1; transform: translateY(0); }
.reveal-stagger.is-visible > * { transition-delay: calc(var(--i, 0) * 90ms); }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Challenge ---------- */
.challenge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}
.challenge-item {
  display: flex;
  gap: 0.9rem;
  padding: 1.4rem;
  background: #fff;
  border: 1px solid var(--white-line);
  border-radius: var(--radius);
}
.challenge-item svg { flex-shrink: 0; width: 22px; height: 22px; color: var(--blue); margin-top: 2px; }
.challenge-item p { font-size: 0.95rem; color: var(--text-on-white-muted); }
.bridge-statement {
  margin-top: 3rem;
  padding: 2rem clamp(1.5rem, 4vw, 3rem);
  border-radius: var(--radius);
  background: var(--navy);
  color: var(--white);
  text-align: center;
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  font-weight: 600;
  line-height: 1.5;
}
.bridge-statement span { color: var(--cyan); }

/* ---------- Capabilities ---------- */
.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.capability-card {
  background: #fff;
  border: 1px solid var(--white-line);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), border-color var(--dur-fast) var(--ease);
}
.capability-card:hover { transform: translateY(-6px); box-shadow: 0 24px 48px -24px rgba(8, 21, 37, 0.25); border-color: transparent; }
.capability-index { font-size: 0.8rem; font-weight: 700; color: var(--blue); letter-spacing: 0.08em; }
.capability-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(40,120,255,0.12), rgba(57,213,232,0.12));
  margin: 1rem 0 1.25rem;
  color: var(--blue);
}
.capability-icon svg { width: 26px; height: 26px; }
.capability-card h3 { font-size: 1.2rem; }
.capability-purpose { margin-top: 0.6rem; font-size: 0.95rem; color: var(--text-on-white-muted); }
.capability-list { margin-top: 1.1rem; display: flex; flex-direction: column; gap: 0.55rem; }
.capability-list li { font-size: 0.88rem; color: var(--graphite); display: flex; gap: 0.55rem; align-items: flex-start; }
.capability-list li::before { content: ''; width: 6px; height: 6px; margin-top: 7px; border-radius: 1px; background: var(--grad-accent); flex-shrink: 0; }
.capability-outcome {
  margin-top: 1.4rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--white-line);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--graphite);
}
.capability-outcome b { color: var(--blue); }
.capability-more {
  margin-top: 1.1rem;
  background: none;
  border: none;
  padding: 0;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blue);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.capability-more svg { width: 14px; height: 14px; transition: transform var(--dur-fast) var(--ease); }
.capability-more[aria-expanded="true"] svg { transform: rotate(180deg); }
.capability-detail {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.4s var(--ease);
}
.capability-detail.is-open { max-height: 600px; }

@media (max-width: 980px) {
  .capability-grid { grid-template-columns: 1fr; }
}

/* ---------- How We Work (architecture diagram) ---------- */
.method-diagram { margin-top: 3rem; }
.method-track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 0;
  position: relative;
}
.method-track::before {
  content: '';
  position: absolute;
  top: 26px;
  left: 4%;
  right: 4%;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
  opacity: 0.35;
}
.method-step { text-align: center; padding: 0 0.5rem; position: relative; }
.method-dot {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: var(--navy);
  border: 2px solid var(--blue);
  color: var(--cyan);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 1.1rem;
  font-weight: 800;
  position: relative;
  z-index: 2;
}
.method-step h3 { font-size: 0.95rem; color: var(--white); }
.method-step p { font-size: 0.8rem; margin-top: 0.4rem; color: var(--text-on-navy-muted); }
.method-step.is-outcome .method-dot { background: var(--grad-accent); border-color: transparent; color: var(--navy); }

@media (max-width: 980px) {
  .method-track { grid-template-columns: 1fr; gap: 2rem; }
  .method-track::before { top: 0; bottom: 0; left: 26px; right: auto; width: 2px; height: auto; background: linear-gradient(180deg, var(--blue), var(--cyan)); }
  .method-step { display: flex; align-items: flex-start; gap: 1.1rem; text-align: left; padding: 0; }
  .method-dot { margin: 0; flex-shrink: 0; }
}

/* ---------- Applied AI diagram ---------- */
.ai-diagram {
  margin-top: 3rem;
  display: grid;
  gap: 1.25rem;
}
.ai-tier {
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--navy-soft);
}
.ai-tier-label { font-size: 0.72rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--cyan); }
.ai-tier-items { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 0.9rem; }
.ai-chip {
  font-size: 0.85rem;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-sm);
  background: rgba(247,249,252,0.06);
  border: 1px solid var(--navy-line);
  color: var(--white);
}
.ai-arrow { display: flex; justify-content: center; color: var(--cyan); opacity: 0.7; }
.ai-arrow svg { width: 20px; height: 20px; }

/* ---------- Outcomes ---------- */
.outcomes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-top: 2rem;
}
.outcome-card {
  padding: 1.75rem;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--white-line);
  text-align: left;
}
.outcome-card svg { width: 28px; height: 28px; color: var(--blue); }
.outcome-card h3 { font-size: 1rem; margin-top: 1rem; }

/* ---------- Brand principles ---------- */
.principles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}
.principle-card {
  padding: 1.75rem 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--navy-line);
  background: var(--navy-soft);
}
.principle-icon {
  width: 46px; height: 46px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--navy-line);
  color: var(--cyan);
  margin-bottom: 1.1rem;
}
.principle-icon svg { width: 22px; height: 22px; }
.principle-card h3 { font-size: 1rem; color: var(--white); }
.principle-card p { font-size: 0.88rem; margin-top: 0.5rem; color: var(--text-on-navy-muted); }

@media (max-width: 980px) {
  .principles-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 560px) {
  .principles-grid { grid-template-columns: 1fr; }
}

/* ---------- About ---------- */
.about-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}
.about-principle { display: flex; gap: 1rem; margin-top: 1.5rem; }
.about-principle svg { width: 22px; height: 22px; color: var(--blue); flex-shrink: 0; margin-top: 3px; }
.about-fact-list { display: flex; flex-direction: column; gap: 1.25rem; }
.about-fact {
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--white-line);
}
.about-fact b { display: block; font-size: 0.95rem; margin-bottom: 0.3rem; }
.about-fact span { font-size: 0.88rem; color: var(--text-on-white-muted); }

@media (max-width: 900px) { .about-layout { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(2rem, 5vw, 4rem);
}
.contact-info-item { display: flex; gap: 1rem; margin-top: 1.5rem; }
.contact-info-item svg { width: 20px; height: 20px; color: var(--cyan); flex-shrink: 0; margin-top: 3px; }
.contact-info-item .placeholder { font-style: italic; opacity: 0.65; }

.form-card {
  background: var(--navy-soft);
  border: 1px solid var(--navy-line);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 3vw, 2.25rem);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-field { margin-top: 1.1rem; }
.form-field:first-child { margin-top: 0; }
.form-field label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 0.45rem; color: var(--white); }
.form-field input, .form-field select, .form-field textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--navy-line);
  background: rgba(247,249,252,0.05);
  color: var(--white);
  font-family: inherit;
  font-size: 0.92rem;
  transition: border-color var(--dur-fast) var(--ease);
}
.form-field select option { color: #000; }
.form-field input:focus, .form-field select:focus, .form-field textarea:focus {
  border-color: var(--blue);
  outline: none;
}
.form-field textarea { resize: vertical; min-height: 110px; }
.form-note { margin-top: 1rem; font-size: 0.8rem; color: var(--text-on-navy-muted); }
.form-status { margin-top: 1rem; font-size: 0.9rem; display: none; padding: 0.85rem 1rem; border-radius: var(--radius-sm); }
.form-status.is-visible { display: block; }
.form-status.success { background: rgba(57,213,232,0.12); color: var(--cyan); }
.form-status.error { background: rgba(255,90,90,0.12); color: #ff8080; }

@media (max-width: 900px) {
  .contact-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

/* ---------- Footer ---------- */
.footer { background: #050d18; color: var(--text-on-navy-muted); padding: 3.5rem 0 2rem; }
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--navy-line);
}
.footer-tagline { margin-top: 1rem; font-size: 0.9rem; max-width: 32ch; }
.footer-col h4 { font-size: 0.8rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--white); margin-bottom: 1rem; }
.footer-col ul { display: flex; flex-direction: column; gap: 0.65rem; }
.footer-col a { font-size: 0.88rem; transition: color var(--dur-fast) var(--ease); }
.footer-col a:hover { color: var(--cyan); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 1.75rem;
  font-size: 0.8rem;
}
.footer-legal { opacity: 0.7; }

@media (max-width: 900px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .footer-top { grid-template-columns: 1fr; }
}

/* ---------- Misc responsive ---------- */
@media (max-width: 980px) {
  .capability-grid, .principles-grid { gap: 1rem; }
}
@media (max-width: 640px) {
  .hero-cta .btn { width: 100%; }
  .capability-grid { grid-template-columns: 1fr; }
}