/* ============================================================
  Crystal HT — Apple-style redesign
   Token system
   ============================================================ */
:root{
  --bg: #ffffff;
  --bg-secondary: #f5f5f7;
  --bg-dark: #1d1d1f;
  --text-primary: #1d1d1f;
  --text-secondary: #6e6e73;
  --text-on-dark: #f5f5f7;
  --accent: #0071e3;
  --accent-dark: #0051a2;
  --divider: #d2d2d7;
  --radius-lg: 22px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --font-display: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(.4,0,.2,1);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--text-primary);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{font-family:var(--font-display);margin:0;letter-spacing:-0.02em;font-weight:600;}
p{margin:0;}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important;}
}

.wrap{max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- Nav ---------- */
.nav{
  position:sticky;top:0;z-index:100;
  background:rgba(255,255,255,0.8);
  backdrop-filter:saturate(180%) blur(20px);
  -webkit-backdrop-filter:saturate(180%) blur(20px);
  border-bottom:1px solid rgba(0,0,0,0.06);
}
.nav .wrap{
  display:flex;align-items:center;justify-content:space-between;
  height:52px;max-width:1200px;
}
.nav-brand{
  display:flex;align-items:center;gap:8px;
  font-size:15px;font-weight:600;letter-spacing:-0.01em;
}
.nav-brand .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;}
.nav-links{display:flex;gap:28px;font-size:13px;font-weight:400;}
.nav-links a{color:var(--text-primary);opacity:0.85;transition:opacity .2s var(--ease);}
.nav-links a:hover, .nav-links a:focus-visible{opacity:1;}
.nav-cta{
  font-size:13px;background:var(--accent);color:#fff;
  padding:6px 14px;border-radius:980px;font-weight:500;
  transition:background .2s var(--ease);
}
.nav-cta:hover{background:var(--accent-dark);}
.nav-toggle{display:none;}

@media (max-width:820px){
  .nav-links{display:none;}
  .nav-toggle{display:block;background:none;border:none;font-size:20px;cursor:pointer;color:var(--text-primary);}
}

/* ---------- Hero ---------- */
.hero{
  padding:96px 24px 64px;
  text-align:center;
  background:linear-gradient(180deg,#fbfbfd 0%, #ffffff 100%);
}
.hero-eyebrow{
  font-size:15px;color:var(--accent);font-weight:600;margin-bottom:12px;
  letter-spacing:0.02em;
}
.hero h1{
  font-size:clamp(36px,6vw,72px);
  line-height:1.05;
  font-weight:700;
  margin:0 auto 18px;
  max-width:900px;
}
.hero .sub{
  font-size:clamp(17px,2vw,24px);
  color:var(--text-secondary);
  max-width:640px;
  margin:0 auto 34px;
  font-weight:400;
  line-height:1.4;
}
.hero-ctas{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin-bottom:56px;}
.btn{
  display:inline-block;padding:12px 24px;border-radius:980px;
  font-size:16px;font-weight:500;transition:all .2s var(--ease);
  border:1px solid transparent;cursor:pointer;
}
.btn-primary{background:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);}
.btn-secondary{color:var(--accent);}
.btn-secondary:after{content:" ›";}
.btn-secondary:hover{color:var(--accent-dark);}
.btn-ghost{border-color:var(--divider);color:var(--text-primary);}
.btn-ghost:hover{border-color:var(--text-primary);}

/* ---------- Signature visual: shielded network ---------- */
.hero-visual{
  max-width:760px;margin:0 auto;
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:radial-gradient(120% 140% at 50% 0%, #1c2b45 0%, #0d1220 60%, #05060a 100%);
  box-shadow:0 30px 60px -20px rgba(0,0,0,0.35);
}
.hero-visual svg{width:100%;height:auto;display:block;}

.node{fill:#0071e3;}
.node-pulse{
  animation:pulse 2.6s var(--ease) infinite;
  transform-origin:center;
}
.node-pulse:nth-child(2){animation-delay:.3s;}
.node-pulse:nth-child(3){animation-delay:.6s;}
.node-pulse:nth-child(4){animation-delay:.9s;}
.node-pulse:nth-child(5){animation-delay:1.2s;}
@keyframes pulse{
  0%,100%{opacity:.55;r:3;}
  50%{opacity:1;r:5;}
}
.link-line{
  stroke:#3d5a80;stroke-width:1;fill:none;opacity:0.55;
  stroke-dasharray:6 6;
  animation:dash 12s linear infinite;
}
@keyframes dash{to{stroke-dashoffset:-240;}}
.shield-outline{
  fill:none;stroke:#e8edf5;stroke-width:1.4;opacity:0.9;
  stroke-dasharray:400;stroke-dashoffset:400;
  animation:draw 1.8s var(--ease) forwards .3s;
}
@keyframes draw{to{stroke-dashoffset:0;}}
.shield-check{
  fill:none;stroke:#34c759;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;
  stroke-dasharray:60;stroke-dashoffset:60;
  animation:draw-check .5s var(--ease) forwards 1.9s;
}
@keyframes draw-check{to{stroke-dashoffset:0;}}

/* ---------- Section basics ---------- */
.section{padding:88px 0;}
.section-alt{background:var(--bg-secondary);}
.section-dark{background:var(--bg-dark);color:var(--text-on-dark);}
.section-head{text-align:center;max-width:680px;margin:0 auto 56px;}
.section-eyebrow{
  font-size:14px;font-weight:600;color:var(--accent);margin-bottom:10px;
  text-transform:uppercase;letter-spacing:0.06em;
}
.section-head h2{font-size:clamp(28px,4vw,44px);margin-bottom:16px;}
.section-head p{font-size:18px;color:var(--text-secondary);line-height:1.5;}
.section-dark .section-head p{color:#a1a1a6;}

/* ---------- Service grid ---------- */
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:16px;
}
.card{
  background:#fff;border-radius:var(--radius-md);
  padding:32px 28px;
  border:1px solid rgba(0,0,0,0.06);
  transition:transform .3s var(--ease), box-shadow .3s var(--ease);
}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -24px rgba(0,0,0,0.25);}
.card-icon{
  width:44px;height:44px;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),#5ac8fa);
  display:flex;align-items:center;justify-content:center;
  margin-bottom:18px;color:#fff;font-size:20px;font-weight:700;
}
.card h3{font-size:19px;margin-bottom:8px;}
.card p{font-size:15px;color:var(--text-secondary);line-height:1.5;margin-bottom:14px;}
.card-link{font-size:14px;color:var(--accent);font-weight:500;}
.card-link:after{content:" ›";}

/* ---------- Stats strip ---------- */
.stats{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:32px;text-align:center;
}
.stat-num{
  font-family:var(--font-display);
  font-size:clamp(32px,4vw,52px);font-weight:700;color:var(--accent);
  letter-spacing:-0.02em;
}
.stat-label{font-size:14px;color:var(--text-secondary);margin-top:6px;}

/* ---------- Feature split ---------- */
.split{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
}
@media (max-width:860px){.split{grid-template-columns:1fr;gap:32px;}}
.split h2{font-size:clamp(26px,3.4vw,38px);margin-bottom:18px;}
.split p{font-size:17px;color:var(--text-secondary);line-height:1.6;margin-bottom:14px;}
.check-list li{
  display:flex;gap:10px;align-items:flex-start;font-size:16px;
  padding:8px 0;color:var(--text-primary);
}
.check-list li:before{
  content:"✓";color:var(--accent);font-weight:700;flex-shrink:0;
}
.split-visual{
  border-radius:var(--radius-lg);
  background:linear-gradient(160deg,#f5f5f7 0%, #e8e8ed 100%);
  aspect-ratio:4/3;display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.split-visual svg{width:70%;height:70%;}

/* ---------- Testimonials ---------- */
.quote-row{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));
  gap:16px;
}
.quote-card{
  background:var(--bg);border-radius:var(--radius-md);
  padding:28px 26px;border:1px solid rgba(0,0,0,0.06);
}
.quote-card p{font-size:16px;line-height:1.5;color:var(--text-primary);margin-bottom:16px;}
.quote-name{font-size:14px;font-weight:600;}
.quote-role{font-size:13px;color:var(--text-secondary);}

/* ---------- Partners ---------- */
.partner-row{
  display:flex;flex-wrap:wrap;justify-content:center;gap:48px;
  align-items:center;opacity:0.55;
}
.partner-row span{font-size:15px;font-weight:600;letter-spacing:0.02em;color:var(--text-secondary);}

/* ---------- CTA band ---------- */
.cta-band{
  text-align:center;padding:96px 24px;
  background:radial-gradient(120% 160% at 50% -20%, #1c2b45 0%, #05060a 70%);
  color:#fff;border-radius:0;
}
.cta-band h2{font-size:clamp(28px,4vw,46px);margin-bottom:16px;color:#fff;}
.cta-band p{font-size:18px;color:#a1a1a6;margin-bottom:32px;max-width:560px;margin-left:auto;margin-right:auto;}
.cta-band .btn-primary{padding:14px 30px;font-size:17px;}
.cta-phone{display:block;margin-top:18px;color:#a1a1a6;font-size:14px;}
.cta-phone a{color:#fff;font-weight:600;}

/* ---------- Footer ---------- */
footer{background:var(--bg-secondary);padding:56px 0 28px;font-size:13px;color:var(--text-secondary);}
.footer-grid{
  display:grid;grid-template-columns:2fr repeat(4,1fr);gap:32px;
  padding-bottom:32px;border-bottom:1px solid var(--divider);
}
@media (max-width:820px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
.footer-grid h4{font-size:13px;color:var(--text-primary);margin-bottom:14px;font-weight:600;}
.footer-grid li{margin-bottom:9px;}
.footer-grid a:hover{color:var(--text-primary);}
.footer-brand{font-size:15px;font-weight:600;color:var(--text-primary);margin-bottom:10px;}
.footer-bottom{padding-top:20px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;}

/* ---------- Breadcrumb / page hero (service pages) ---------- */
.page-hero{padding:72px 24px 48px;text-align:center;background:linear-gradient(180deg,#fbfbfd 0%,#fff 100%);}
.breadcrumb{font-size:13px;color:var(--text-secondary);margin-bottom:18px;}
.breadcrumb a{color:var(--accent);}
.page-hero h1{font-size:clamp(32px,5vw,58px);margin-bottom:14px;}
.page-hero .sub{font-size:clamp(16px,1.8vw,20px);color:var(--text-secondary);max-width:640px;margin:0 auto 30px;}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease), transform .7s var(--ease);}
.reveal.in{opacity:1;transform:translateY(0);}