/* Olyteck Studio — shared stylesheet
   Matches olyteck.com brand: Inter, blue #1d4ed8 → violet #7c3aed gradient
   Used by both index.html and cases/*.html */

@property --grad-angle { syntax: '<angle>'; initial-value: 0deg; inherits: false; }
@property --shine-x    { syntax: '<percentage>'; initial-value: -50%; inherits: false; }

:root {
  --c-bg:        #f8fafc;
  --c-surface:   #ffffff;
  --c-border:    #e2e8f0;
  --c-primary:   #1d4ed8;
  --c-primary-h: #1e40af;
  --c-violet:    #7c3aed;
  --c-accent:    #eef2ff;
  --c-text:      #0f172a;
  --c-muted:     #475569;
  --c-faint:     #94a3b8;
  --c-danger:    #dc2626;
  --c-orange:    #f97316;
  --c-success:   #059669;
  --c-emerald:   #10b981;
  --c-amber:     #f59e0b;
  --radius:      12px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-pill: 999px;
  --shadow-sm:   0 2px 10px rgba(15,23,42,.06);
  --shadow-lg:   0 8px 40px rgba(15,23,42,.08);
  --shadow-xl:   0 24px 60px rgba(29,78,216,.18);
  --grad-brand:  linear-gradient(135deg, #1d4ed8 0%, #7c3aed 100%);
  --grad-cyber:  linear-gradient(90deg, #dc2626, #f97316);
  --grad-ask:    linear-gradient(90deg, #7c3aed, #2563eb);
  --grad-studio: linear-gradient(90deg, #1d4ed8, #0ea5e9);
  --grad-edu:    linear-gradient(90deg, #f59e0b, #f97316);
  --maxw:        1200px;
  --ease-out:    cubic-bezier(.2,.7,.2,1);
  --ease-spring: cubic-bezier(.34,1.56,.64,1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 16px; line-height: 1.65;
  color: var(--c-text); background: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  font-feature-settings: 'cv11','ss01';
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: var(--c-primary); text-decoration: none; }
a:hover { color: var(--c-primary-h); text-decoration: underline; }
button { font-family: inherit; cursor: pointer; border: 0; background: none; }
::selection { background: rgba(124,58,237,.18); color: var(--c-text); }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; }

/* ───────── Scroll progress bar ───────── */
.scroll-progress { position: fixed; top: 0; left: 0; right: 0; height: 3px; z-index: 100; pointer-events: none; }
.scroll-progress > i {
  display: block; height: 100%; width: 0;
  background: var(--grad-brand);
  box-shadow: 0 0 14px rgba(29,78,216,.5);
  transition: width .12s linear;
}

/* ───────── Top nav ───────── */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid rgba(226,232,240,.6);
  transition: background .25s, border-color .25s, box-shadow .25s;
}
.nav.scrolled { background: rgba(255,255,255,.94); box-shadow: 0 6px 24px rgba(15,23,42,.04); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; gap: 16px; }
.brand { display: flex; align-items: center; gap: 12px; transition: transform .25s var(--ease-spring); }
.brand:hover { text-decoration: none; transform: translateY(-1px); }
.brand .mark {
  width: 38px; height: 38px; border-radius: 11px;
  background: var(--grad-brand);
  display: grid; place-items: center;
  color: #fff; font-weight: 900; font-size: 18px; letter-spacing: -0.02em;
  box-shadow: 0 4px 14px rgba(29,78,216,.32), inset 0 1px 0 rgba(255,255,255,.25);
  position: relative; overflow: hidden;
}
.brand .mark::after {
  content: ''; position: absolute; inset: -2px;
  background: conic-gradient(from var(--grad-angle), transparent 0%, rgba(255,255,255,.45) 25%, transparent 50%);
  animation: spin 6s linear infinite; mix-blend-mode: overlay;
}
@keyframes spin { to { --grad-angle: 360deg; } }
.brand .word { font-weight: 800; font-size: 19px; color: var(--c-primary); letter-spacing: -0.015em; }
.brand .word small { display: block; font-weight: 500; font-size: 11px; color: var(--c-muted); letter-spacing: 0.04em; text-transform: uppercase; }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a { color: var(--c-muted); font-weight: 500; font-size: 15px; position: relative; padding: 4px 0; }
.nav-links a:hover { color: var(--c-primary); text-decoration: none; }
.nav-links a:not(.ext)::after {
  content: ''; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px;
  background: var(--grad-brand); border-radius: 2px;
  transform: scaleX(0); transform-origin: left; transition: transform .3s var(--ease-out);
}
.nav-links a:not(.ext):hover::after { transform: scaleX(1); }
.nav-links .ext::after { content: '↗'; font-size: 11px; opacity: .6; margin-left: 4px; }
.nav-cta { display: flex; align-items: center; gap: 10px; }
.lang-switch {
  display: inline-flex; gap: 4px; padding: 4px; background: var(--c-bg); border: 1px solid var(--c-border); border-radius: 8px;
}
.lang-switch button {
  padding: 5px 10px; font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase;
  color: var(--c-muted); border-radius: 6px; transition: background .15s, color .15s;
}
.lang-switch button.active { background: #fff; color: var(--c-primary); box-shadow: 0 1px 3px rgba(15,23,42,.08); }
.cta-btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--c-primary); color: #fff; font-weight: 700; font-size: 14px;
  padding: 10px 18px; border-radius: 10px;
  transition: background .15s, transform .15s, box-shadow .2s;
  box-shadow: 0 4px 14px rgba(29,78,216,.25);
  position: relative; overflow: hidden;
}
.cta-btn::after {
  content: ''; position: absolute; top: 0; left: var(--shine-x); width: 50%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-20deg);
  transition: --shine-x .8s var(--ease-out);
}
.cta-btn:hover { background: var(--c-primary-h); color: #fff; text-decoration: none; transform: translateY(-1px); box-shadow: 0 8px 22px rgba(29,78,216,.35); }
.cta-btn:hover::after { --shine-x: 150%; }

/* ───────── Hero ───────── */
.hero {
  position: relative; isolation: isolate;
  padding: 110px 0 96px;
  text-align: center;
  overflow: hidden;
  background: linear-gradient(180deg, #ffffff 0%, var(--c-bg) 100%);
}
.hero-bg {
  position: absolute; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(900px 480px at 22% 12%, rgba(99,102,241,.18), transparent 60%),
    radial-gradient(900px 480px at 80% 8%, rgba(124,58,237,.16), transparent 60%),
    radial-gradient(700px 400px at 50% 100%, rgba(59,130,246,.10), transparent 60%);
}
.hero-orbs { position: absolute; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.hero-orbs span { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .55; animation: float 18s ease-in-out infinite; }
.hero-orbs .o1 { width: 420px; height: 420px; left: -80px; top: -120px; background: radial-gradient(circle at 30% 30%, #93c5fd, transparent 60%); }
.hero-orbs .o2 { width: 360px; height: 360px; right: -60px; top: -40px; animation-delay: -6s; background: radial-gradient(circle at 30% 30%, #c4b5fd, transparent 60%); }
.hero-orbs .o3 { width: 320px; height: 320px; left: 40%; top: 60%; animation-delay: -12s; background: radial-gradient(circle at 30% 30%, #a5f3fc, transparent 60%); }
@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(40px, 30px) scale(1.06); }
  66%      { transform: translate(-30px, 50px) scale(.95); }
}
.hero-grid {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(15,23,42,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15,23,42,.045) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 40%, transparent 80%);
}
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(219,234,254,.7); color: var(--c-primary);
  font-weight: 700; font-size: 13px; padding: 6px 14px; border-radius: var(--radius-pill);
  letter-spacing: 0.06em; text-transform: uppercase;
  margin-bottom: 26px;
  border: 1px solid rgba(29,78,216,.12);
  backdrop-filter: blur(8px);
}
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c-primary); position: relative; }
.eyebrow .dot::after { content: ''; position: absolute; inset: 0; border-radius: 50%; background: inherit; animation: pulse 2s ease-out infinite; }
@keyframes pulse { 0%{transform:scale(1);opacity:.7;} 80%{transform:scale(2.6);opacity:0;} 100%{transform:scale(2.6);opacity:0;} }
.eyebrow.violet  { background: rgba(245,243,255,.7); color: var(--c-violet);  border-color: rgba(124,58,237,.12); }
.eyebrow.violet  .dot { background: var(--c-violet); }
.eyebrow.success { background: rgba(236,253,245,.7); color: var(--c-success); border-color: rgba(5,150,105,.14); }
.eyebrow.success .dot { background: var(--c-success); }
.eyebrow.danger  { background: rgba(254,242,242,.7); color: var(--c-danger);  border-color: rgba(220,38,38,.14); }
.eyebrow.danger  .dot { background: var(--c-danger); }

.h1 {
  font-size: clamp(36px, 5.4vw, 60px);
  font-weight: 800; letter-spacing: -0.028em; line-height: 1.04;
  max-width: 940px; margin: 0 auto 22px;
}
.h1 em {
  font-style: normal;
  background: linear-gradient(120deg, #1d4ed8 0%, #7c3aed 50%, #1d4ed8 100%);
  background-size: 200% 100%;
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  animation: shimmer 6s linear infinite;
}
@keyframes shimmer { 0%{background-position:0% 50%;} 100%{background-position:200% 50%;} }
.lede { font-size: clamp(17px, 1.6vw, 20px); color: var(--c-muted); font-weight: 500; max-width: 760px; margin: 0 auto 36px; line-height: 1.55; }
.hero-ctas { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-bottom: 26px; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--c-primary); color: #fff; font-weight: 800; font-size: 16px;
  padding: 16px 26px; border-radius: 12px;
  box-shadow: 0 10px 28px rgba(29,78,216,.28), inset 0 1px 0 rgba(255,255,255,.18);
  transition: transform .2s var(--ease-out), background .15s, box-shadow .2s;
  position: relative; overflow: hidden;
}
.btn-primary::before {
  content: ''; position: absolute; inset: -2px; border-radius: 14px; padding: 2px;
  background: conic-gradient(from var(--grad-angle), #1d4ed8, #7c3aed, #06b6d4, #1d4ed8);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .3s; animation: spin 4s linear infinite;
}
.btn-primary:hover::before { opacity: 1; }
.btn-primary:hover { background: var(--c-primary-h); color: #fff; text-decoration: none; transform: translateY(-2px); box-shadow: 0 14px 36px rgba(29,78,216,.36); }
.btn-primary i { transition: transform .25s var(--ease-spring); }
.btn-primary:hover i { transform: translateX(3px); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 10px;
  background: rgba(255,255,255,.85); color: var(--c-text); font-weight: 700; font-size: 16px;
  padding: 15px 24px; border-radius: 12px;
  border: 1px solid var(--c-border); backdrop-filter: blur(8px);
  transition: border-color .2s, color .2s, transform .2s, box-shadow .2s;
}
.btn-secondary:hover { border-color: var(--c-primary); color: var(--c-primary); text-decoration: none; transform: translateY(-2px); box-shadow: var(--shadow-sm); }

.hero-trust { font-size: 14px; color: var(--c-muted); font-weight: 500; }
.hero-trust .chk { color: var(--c-success); font-weight: 800; margin: 0 6px 0 18px; }
.hero-trust .chk:first-of-type { margin-left: 0; }

.hero-stats { display: flex; justify-content: center; gap: 38px; flex-wrap: wrap; margin-top: 56px; }
.hero-stat { display: flex; flex-direction: column; align-items: center; padding: 0 12px; }
.hero-stat .num {
  font-size: clamp(28px, 3.2vw, 36px); font-weight: 800; letter-spacing: -0.02em;
  background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
  line-height: 1;
}
.hero-stat .lbl { font-size: 12px; font-weight: 700; color: var(--c-muted); letter-spacing: 0.08em; text-transform: uppercase; margin-top: 8px; }

/* ───────── Section header ───────── */
section { padding: 96px 0; position: relative; }
.sec-head { text-align: center; max-width: 780px; margin: 0 auto 56px; }
.sec-head h2 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; letter-spacing: -0.022em; line-height: 1.13; margin-bottom: 16px; }
.sec-head h2 em { font-style: normal; background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.sec-head p { font-size: clamp(15px, 1.4vw, 17px); color: var(--c-muted); font-weight: 500; line-height: 1.6; }

/* ───────── Reveal-on-scroll ───────── */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s var(--ease-out), transform .8s var(--ease-out); }
.reveal.in { opacity: 1; transform: translateY(0); }
.reveal-d1 { transition-delay: .08s; }
.reveal-d2 { transition-delay: .16s; }
.reveal-d3 { transition-delay: .24s; }
.reveal-d4 { transition-delay: .32s; }
.reveal-d5 { transition-delay: .40s; }
.reveal-d6 { transition-delay: .48s; }

/* ───────── Capability tiles ───────── */
.sec-capabilities { background: #fff; }
.caps { display: grid; gap: 22px; grid-template-columns: repeat(4, 1fr); }
.cap {
  position: relative; overflow: hidden;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 28px 24px; box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease-out), box-shadow .3s, border-color .25s;
}
.cap::before { content: ''; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--grad-brand); opacity: .85; }
.cap:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(29,78,216,.22); }
.cap .ico { width: 52px; height: 52px; border-radius: 14px; background: var(--c-accent); color: var(--c-primary); display: grid; place-items: center; font-size: 22px; margin-bottom: 16px; }
.cap h4 { font-size: 17px; font-weight: 800; letter-spacing: -0.01em; line-height: 1.3; margin-bottom: 8px; }
.cap p { font-size: 14px; color: var(--c-muted); line-height: 1.55; }
.cap .examples { margin-top: 14px; font-size: 12px; color: var(--c-faint); font-weight: 600; letter-spacing: .04em; text-transform: uppercase; }

/* ───────── Case grid ───────── */
.sec-cases { background: linear-gradient(180deg, #ffffff 0%, var(--c-bg) 100%); }
.case-grid { display: grid; gap: 24px; grid-template-columns: repeat(2, 1fr); }
.case-card {
  position: relative; overflow: hidden;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 28px 28px 24px; display: flex; flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform .3s var(--ease-out), box-shadow .3s, border-color .25s;
}
.case-card::before { content: ''; position: absolute; left: 0; right: 0; top: 0; height: 4px; background: var(--grad-studio); }
.case-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: rgba(29,78,216,.22); text-decoration: none; }
.case-card .meta { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.case-card .meta .pill {
  font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 4px 10px; border-radius: 999px;
  background: var(--c-bg); color: var(--c-muted);
  border: 1px solid var(--c-border);
}
.case-card .meta .pill.industry { background: #eef2ff; color: var(--c-primary); border-color: rgba(29,78,216,.18); }
.case-card h3 { font-size: 19px; font-weight: 800; letter-spacing: -0.012em; line-height: 1.3; margin-bottom: 10px; color: var(--c-text); }
.case-card p.summary { font-size: 14.5px; color: var(--c-muted); line-height: 1.55; margin-bottom: 18px; }
.case-card .highlights { list-style: none; margin: 0 0 18px; }
.case-card .highlights li {
  font-size: 13.5px; color: var(--c-text); font-weight: 600;
  padding: 5px 0 5px 26px; position: relative;
}
.case-card .highlights li::before {
  content: '✓'; position: absolute; left: 4px; top: 5px;
  width: 16px; height: 16px; border-radius: 50%;
  background: rgba(5,150,105,.12); color: var(--c-success);
  font-weight: 800; font-size: 10px; line-height: 16px; text-align: center;
}
.case-card .read {
  margin-top: auto; display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700; font-size: 14px; color: var(--c-primary);
  transition: gap .2s;
}
.case-card .read i { transition: transform .25s var(--ease-spring); }
.case-card:hover .read i { transform: translateX(4px); }

/* ───────── Process / steps ───────── */
.sec-process { background: #fff; }
.process { display: grid; gap: 20px; grid-template-columns: repeat(4, 1fr); position: relative; }
.process::before {
  content: ''; position: absolute; top: 38px; left: 8%; right: 8%; height: 2px;
  background: linear-gradient(90deg, transparent, rgba(29,78,216,.25), rgba(124,58,237,.25), transparent);
  z-index: 0;
}
.step {
  position: relative; z-index: 1;
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 28px 22px; text-align: center;
  transition: transform .3s var(--ease-out), box-shadow .3s, border-color .25s;
}
.step:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: rgba(29,78,216,.22); }
.step .num {
  width: 48px; height: 48px; border-radius: 50%;
  background: var(--grad-brand); color: #fff;
  display: grid; place-items: center; font-weight: 800; font-size: 17px;
  margin: 0 auto 16px;
  box-shadow: 0 6px 18px rgba(29,78,216,.32);
}
.step h4 { font-size: 17px; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 8px; line-height: 1.3; }
.step p { font-size: 13.5px; color: var(--c-muted); line-height: 1.55; }
.step .meta { display: block; margin-top: 10px; font-size: 12px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--c-violet); }

/* ───────── Why us ───────── */
.sec-why { background: linear-gradient(180deg, var(--c-bg) 0%, #eef2ff 100%); }
.why-grid { display: grid; gap: 20px; grid-template-columns: repeat(3, 1fr); }
.why-item {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 24px 22px; box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease-out), box-shadow .25s, border-color .25s;
}
.why-item:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: rgba(124,58,237,.22); }
.why-item .ico { font-size: 22px; color: var(--c-violet); margin-bottom: 12px; display: inline-flex; width: 44px; height: 44px; border-radius: 12px; background: rgba(124,58,237,.08); align-items: center; justify-content: center; }
.why-item h4 { font-size: 16px; font-weight: 800; letter-spacing: -0.01em; margin-bottom: 6px; }
.why-item p { font-size: 14px; color: var(--c-muted); line-height: 1.55; }

/* ───────── Big CTA band ───────── */
.sec-cta { background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%); color: #fff; padding: 88px 0; position: relative; overflow: hidden; }
.sec-cta::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(700px 320px at 90% 0%, rgba(124,58,237,.28), transparent 60%),
    radial-gradient(700px 320px at 10% 100%, rgba(29,78,216,.28), transparent 60%);
}
.sec-cta .wrap { text-align: center; position: relative; }
.sec-cta .eyebrow { background: rgba(255,255,255,.08); color: #c7d2fe; border-color: rgba(255,255,255,.12); }
.sec-cta h2 { font-size: clamp(28px, 3.4vw, 42px); font-weight: 800; letter-spacing: -0.022em; line-height: 1.13; margin-bottom: 16px; color: #fff; }
.sec-cta h2 em { font-style: normal; background: linear-gradient(120deg, #93c5fd, #c4b5fd); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.sec-cta p { font-size: 17px; color: #cbd5e1; max-width: 640px; margin: 0 auto 32px; line-height: 1.6; }
.sec-cta .btn-primary { background: #fff; color: var(--c-primary); box-shadow: 0 10px 28px rgba(255,255,255,.18); }
.sec-cta .btn-primary:hover { background: #f8fafc; color: var(--c-primary-h); }
.sec-cta .alt { display: block; margin-top: 18px; font-size: 14px; color: #94a3b8; }
.sec-cta .alt a { color: #c7d2fe; }

/* ───────── Trust strip (marquee) ───────── */
.trust-strip { background: #fff; border-top: 1px solid var(--c-border); border-bottom: 1px solid var(--c-border); overflow: hidden; }
.trust-strip-inner {
  display: flex; align-items: center; gap: 48px; padding: 22px 0;
  width: max-content;
  animation: marquee 38s linear infinite;
  font-size: 13px; font-weight: 600; color: var(--c-muted);
  letter-spacing: 0.05em; text-transform: uppercase;
}
.trust-strip:hover .trust-strip-inner { animation-play-state: paused; }
.trust-strip-inner span { display: inline-flex; align-items: center; gap: 8px; white-space: nowrap; }
.trust-strip-inner .dot { color: var(--c-success); font-weight: 800; }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-50%); } }

/* ───────── Footer ───────── */
.foot { background: #0f172a; color: #cbd5e1; padding: 64px 0 32px; position: relative; overflow: hidden; }
.foot::before {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background:
    radial-gradient(700px 320px at 90% 0%, rgba(124,58,237,.18), transparent 60%),
    radial-gradient(700px 320px at 10% 0%, rgba(29,78,216,.18), transparent 60%);
}
.foot > * { position: relative; }
.foot-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.foot-brand .word { color: #fff; font-size: 22px; font-weight: 800; }
.foot-brand .word small { color: #94a3b8; }
.foot-brand p { margin-top: 14px; font-size: 14px; color: #94a3b8; line-height: 1.6; max-width: 320px; }
.foot-col h5 { font-size: 12px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; color: #94a3b8; margin-bottom: 16px; }
.foot-col ul { list-style: none; }
.foot-col li { padding: 5px 0; }
.foot-col a { color: #cbd5e1; font-size: 14.5px; font-weight: 500; transition: color .2s, padding .2s; }
.foot-col a:hover { color: #fff; text-decoration: none; padding-left: 4px; }
.foot-bot { border-top: 1px solid #1e293b; padding-top: 22px; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px; font-size: 13px; color: #94a3b8; }

/* ───────── Case study page styles ───────── */
.cs-hero {
  position: relative; isolation: isolate;
  padding: 88px 0 56px;
  background: linear-gradient(180deg, #ffffff 0%, var(--c-bg) 100%);
  text-align: left;
  overflow: hidden;
}
.cs-hero .hero-bg { background:
  radial-gradient(900px 480px at 18% 12%, rgba(99,102,241,.18), transparent 60%),
  radial-gradient(900px 480px at 82% 8%, rgba(124,58,237,.16), transparent 60%); }
.cs-back { display: inline-flex; align-items: center; gap: 6px; font-size: 14px; font-weight: 600; color: var(--c-muted); margin-bottom: 22px; }
.cs-back:hover { color: var(--c-primary); text-decoration: none; }
.cs-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 22px; }
.cs-meta .pill {
  font-size: 11.5px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase;
  padding: 5px 12px; border-radius: 999px;
  background: var(--c-bg); color: var(--c-muted); border: 1px solid var(--c-border);
}
.cs-meta .pill.industry { background: #eef2ff; color: var(--c-primary); border-color: rgba(29,78,216,.18); }
.cs-meta .pill.outcome  { background: #ecfdf5; color: var(--c-success); border-color: rgba(5,150,105,.18); }
.cs-title { font-size: clamp(28px, 4vw, 44px); font-weight: 800; letter-spacing: -0.022em; line-height: 1.1; max-width: 920px; margin-bottom: 18px; }
.cs-intro { font-size: clamp(16px, 1.5vw, 19px); color: var(--c-muted); max-width: 820px; line-height: 1.6; margin-bottom: 36px; }
.cs-kpis { display: grid; gap: 16px; grid-template-columns: repeat(4, 1fr); margin-top: 8px; }
.cs-kpi {
  background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 18px 18px; box-shadow: var(--shadow-sm);
}
.cs-kpi .v { font-size: 26px; font-weight: 800; letter-spacing: -0.02em; background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; line-height: 1; margin-bottom: 6px; }
.cs-kpi .l { font-size: 12px; font-weight: 700; color: var(--c-muted); letter-spacing: .06em; text-transform: uppercase; }

.cs-section { padding: 64px 0; }
.cs-section + .cs-section { border-top: 1px solid var(--c-border); }
.cs-section.alt { background: #fff; }
.cs-section h2 { font-size: clamp(22px, 2.6vw, 30px); font-weight: 800; letter-spacing: -0.018em; margin-bottom: 14px; line-height: 1.2; }
.cs-section h2 em { font-style: normal; background: var(--grad-brand); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.cs-section .lead { font-size: 17px; color: var(--c-muted); max-width: 820px; line-height: 1.65; margin-bottom: 26px; }
.cs-section h3 { font-size: 17px; font-weight: 800; margin: 22px 0 10px; color: var(--c-text); }
.cs-section ul { list-style: none; padding-left: 0; }
.cs-section ul li {
  font-size: 15px; color: var(--c-text); padding: 7px 0 7px 26px;
  position: relative; line-height: 1.55;
}
.cs-section ul li::before {
  content: '✓'; position: absolute; left: 0; top: 8px;
  width: 18px; height: 18px; border-radius: 50%;
  background: rgba(5,150,105,.12); color: var(--c-success);
  font-weight: 800; font-size: 11px; line-height: 18px; text-align: center;
}
.cs-section ul.problems li::before { content: '!'; background: rgba(220,38,38,.10); color: var(--c-danger); }
.cs-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; }
.cs-card {
  background: var(--c-bg); border: 1px solid var(--c-border); border-radius: var(--radius-lg);
  padding: 24px 24px;
}
.cs-card.alt { background: #fff; }
.cs-quote {
  background: #eef2ff; border-left: 4px solid var(--c-primary); border-radius: 12px;
  padding: 22px 24px; margin: 28px 0; font-size: 16.5px; color: var(--c-text); line-height: 1.6; font-style: italic;
}
.cs-quote .author { display: block; margin-top: 12px; font-style: normal; font-size: 13px; font-weight: 700; color: var(--c-muted); letter-spacing: .04em; text-transform: uppercase; }

.cs-takeaways { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin-top: 12px; }
.cs-takeaway {
  background: #fff; border: 1px solid var(--c-border); border-radius: 12px; padding: 18px 16px;
  text-align: center;
}
.cs-takeaway .ico { font-size: 22px; color: var(--c-violet); margin-bottom: 10px; }
.cs-takeaway h4 { font-size: 13px; font-weight: 800; margin-bottom: 6px; letter-spacing: -0.01em; }
.cs-takeaway p { font-size: 12.5px; color: var(--c-muted); line-height: 1.45; }

.cs-cta {
  background: linear-gradient(135deg, #1d4ed8 0%, #7c3aed 100%);
  color: #fff; border-radius: var(--radius-xl); padding: 48px 48px;
  text-align: center; margin-top: 32px;
  box-shadow: var(--shadow-xl);
}
.cs-cta h2 {
  color: #fff;
  margin: 0 auto 12px;
  max-width: 760px;
  text-align: center;
}
.cs-cta h2 em {
  font-style: normal;
  background: linear-gradient(120deg, #93c5fd, #c4b5fd);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.cs-cta p { color: rgba(255,255,255,.88); font-size: 16px; max-width: 620px; margin: 0 auto 24px; line-height: 1.6; text-align: center; }
.cs-cta .btn-primary { background: #fff; color: var(--c-primary); box-shadow: 0 10px 28px rgba(0,0,0,.18); }
.cs-cta .btn-primary:hover { background: #f8fafc; color: var(--c-primary-h); }

/* ───────── Responsive ───────── */
@media (max-width: 1000px) {
  .caps { grid-template-columns: repeat(2, 1fr); }
  .case-grid { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .process::before { display: none; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-takeaways { grid-template-columns: repeat(2, 1fr); }
  .cs-kpis { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .lang-switch { display: none; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
  .foot-brand { grid-column: 1 / -1; }
  .cs-grid-2 { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .caps { grid-template-columns: 1fr; }
}
@media (max-width: 540px) {
  section { padding: 64px 0; }
  .hero { padding: 72px 0 64px; }
  .h1 { font-size: 30px; }
  .cs-cta { padding: 32px 24px; }
}

/* ───────── Reduced motion ───────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}