/* ============================================================
   PERFORMANCE SPUR — Core Design System
   ============================================================ */

:root{
  /* Color */
  --navy-950:#0A1130;
  --navy-900:#0F1838;
  --navy-700:#1C2A55;
  --blue-600:#1657E0;
  --blue-500:#3568E8;
  --blue-400:#6E93E8;
  --blue-200:#B7CBF5;
  --blue-100:#DCE6FA;
  --paper:#F7F8FC;
  --white:#FFFFFF;
  --amber:#F2A93B;
  --ink-60:rgba(10,17,48,.62);
  --ink-40:rgba(10,17,48,.42);
  --line:rgba(10,17,48,.10);
  --line-soft:rgba(10,17,48,.07);

  /* Type */
  --font-head:'Space Grotesk', 'Arial Narrow', sans-serif;
  --font-body:'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Scale */
  --step-1: clamp(2.6rem, 2rem + 2.6vw, 4.6rem);
  --step-2: clamp(2rem, 1.6rem + 1.8vw, 3.1rem);
  --step-3: clamp(1.5rem, 1.3rem + 1vw, 2.1rem);
  --step-4: clamp(1.15rem, 1.05rem + .4vw, 1.4rem);

  --radius-s: 6px;
  --radius-m: 14px;
  --container: 1180px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--navy-950);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  line-height:1.55;
  overflow-x:hidden;
}
img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }
h1,h2,h3,h4{
  font-family:var(--font-head);
  color:var(--navy-950);
  margin:0 0 .5em;
  line-height:1.1;
  letter-spacing:-.01em;
  font-weight:600;
}
p{ margin:0 0 1em; }
.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}
section{ position:relative; }

/* Chart-grid texture, used sparingly on paper sections */
.grid-tex{
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:2px solid var(--blue-600);
  outline-offset:3px;
}

@media (prefers-reduced-motion: reduce){
  *{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:14px 26px;
  border-radius:var(--radius-s);
  font-weight:600;
  font-size:.98rem;
  border:1.5px solid transparent;
  transition:transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
  white-space:nowrap;
}
.btn:hover{ transform:translateY(-2px); }
.btn-primary{ background:var(--blue-600); color:var(--white); }
.btn-primary:hover{ background:var(--navy-950); }
.btn-ghost{ background:transparent; color:var(--navy-950); border-color:var(--line); }
.btn-ghost:hover{ border-color:var(--navy-950); }
.btn-invert{ background:var(--white); color:var(--blue-600); }
.btn-invert:hover{ background:var(--blue-100); }
.btn-sm{ padding:10px 18px; font-size:.9rem; }

/* ---------- Top utility bar ---------- */
.topbar{
  background:var(--navy-950);
  color:var(--blue-100);
  font-size:.82rem;
}
.topbar .container{
  display:flex; justify-content:space-between; align-items:center;
  padding-top:8px; padding-bottom:8px;
  gap:16px; flex-wrap:wrap;
}
.topbar a{ color:var(--blue-100); }
.topbar a:hover{ color:var(--white); }
.topbar-links{ display:flex; gap:22px; flex-wrap:wrap; }
.topbar-links span{ opacity:.55; margin-right:6px; }

/* ---------- Header / Nav ---------- */
header.site-header{
  background:var(--white);
  border-bottom:1px solid var(--line);
  position:sticky; top:0; z-index:100;
}
.nav-row{
  display:flex; align-items:center; justify-content:space-between;
  padding:14px 0;
  gap:24px;
  position:relative;
}
.brand{ display:flex; align-items:center; gap:10px; flex-shrink:0; }
.brand img{ height:44px; width:auto; }
.nav-primary{ display:flex; align-items:center; gap:2px; flex:1; justify-content:center; }
.nav-primary > li{ position:relative; }
.nav-primary > li > a{
  display:flex; align-items:center; gap:5px;
  padding:10px 16px;
  font-weight:500;
  font-size:.96rem;
  border-radius:var(--radius-s);
  color:var(--navy-950);
}
.nav-primary > li > a:hover{ background:var(--blue-100); color:var(--blue-600); }
.nav-primary > li > a.active{ color:var(--blue-600); }
.caret{ width:9px; height:9px; border-right:1.6px solid currentColor; border-bottom:1.6px solid currentColor; transform:rotate(45deg); margin-top:-3px; opacity:.6; }

.dropdown{
  position:absolute; top:calc(100% + 6px); left:50%; transform:translateX(-50%);
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  box-shadow:0 18px 40px rgba(10,17,48,.12);
  min-width:240px;
  padding:10px;
  opacity:0; visibility:hidden; pointer-events:none;
  transition:opacity .16s ease, transform .16s ease;
}
.nav-primary > li:hover .dropdown,
.nav-primary > li:focus-within .dropdown{
  opacity:1; visibility:visible; pointer-events:auto; transform:translateX(-50%) translateY(0);
}
.dropdown a{
  display:block; padding:10px 12px; border-radius:8px;
  font-size:.92rem; color:var(--ink-60);
}
.dropdown a:hover{ background:var(--blue-100); color:var(--blue-600); }
.nav-cta{ display:flex; align-items:center; gap:12px; flex-shrink:0; }
.nav-phone{ font-size:.88rem; font-weight:600; color:var(--navy-950); display:none; }
@media (min-width:1080px){ .nav-phone{ display:inline; } }

.nav-toggle{
  display:none; background:none; border:1px solid var(--line); border-radius:8px;
  padding:9px 11px; position:relative; width:42px; height:38px; flex-shrink:0;
}
.nav-toggle span{
  display:block; position:absolute; left:11px; right:11px; height:2px; background:var(--navy-950);
  transition:transform .2s ease, opacity .2s ease;
}
.nav-toggle span:nth-child(1){ top:12px; }
.nav-toggle span:nth-child(2){ top:18px; }
.nav-toggle span:nth-child(3){ top:24px; }
.nav-toggle[aria-expanded="true"] span:nth-child(1){ transform:translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2){ opacity:0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3){ transform:translateY(-6px) rotate(-45deg); }

@media (max-width: 600px){
  .nav-cta .btn-primary{ display:none; }
}

@media (max-width: 940px){
  .nav-primary{
    display:none;
    position:absolute; top:100%; left:0; right:0;
    background:var(--white);
    border-bottom:1px solid var(--line);
    flex-direction:column; align-items:stretch;
    padding:8px 20px 20px;
    max-height:80vh; overflow-y:auto;
  }
  .nav-primary.nav-open{ display:flex; }
  .nav-primary > li > a{ padding:14px 6px; border-bottom:1px solid var(--line-soft); }
  .dropdown{
    position:static; transform:none; box-shadow:none; border:none; opacity:1; visibility:visible;
    pointer-events:auto; display:none; min-width:0; padding:0 0 8px 14px;
  }
  .nav-primary > li.dd-open .dropdown{ display:block; }
  .nav-toggle{ display:block; }
}

/* ---------- Footer ---------- */
footer.site-footer{
  background:var(--navy-950);
  color:var(--blue-100);
  padding:64px 0 0;
}
.footer-top{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  padding-bottom:48px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
@media (max-width:860px){ .footer-top{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .footer-top{ grid-template-columns:1fr; } }
.footer-logo{ background:var(--white); display:inline-block; padding:10px 14px; border-radius:10px; margin-bottom:16px; }
.footer-logo img{ height:36px; }
.footer-top h4{ color:var(--white); font-size:.92rem; font-family:var(--font-body); font-weight:600; margin-bottom:16px; letter-spacing:.02em; }
.footer-top a, .footer-top p{ color:var(--blue-100); font-size:.92rem; opacity:.85; }
.footer-top ul li{ margin-bottom:10px; }
.footer-top ul a:hover{ opacity:1; color:var(--white); }
.footer-social{ display:flex; gap:10px; margin-top:18px; }
.footer-social a{
  width:36px; height:36px; border-radius:50%;
  border:1px solid rgba(255,255,255,.25);
  display:flex; align-items:center; justify-content:center;
}
.footer-social a:hover{ background:var(--blue-600); border-color:var(--blue-600); }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center;
  padding:22px 0; font-size:.82rem; opacity:.6; flex-wrap:wrap; gap:10px;
}

/* ---------- Section helpers ---------- */
.eyebrow{
  font-family:var(--font-head);
  font-size:.85rem;
  font-weight:600;
  color:var(--blue-600);
  margin-bottom:14px;
  display:inline-block;
}
.section-head{ max-width:640px; margin-bottom:48px; }
.section-head p{ color:var(--ink-60); font-size:1.05rem; }
.pad{ padding:96px 0; }
.pad-sm{ padding:64px 0; }

/* Cards */
.card{
  background:var(--white);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  padding:32px;
}

/* Stat strip */
.stat-strip{
  display:grid; grid-template-columns:repeat(4,1fr); gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  overflow:hidden;
}
@media (max-width:760px){ .stat-strip{ grid-template-columns:1fr 1fr; } }
.stat-cell{ background:var(--white); padding:32px 24px; text-align:left; }
.stat-num{ font-family:var(--font-head); font-size:2.2rem; font-weight:600; color:var(--navy-950); }
.stat-label{ font-size:.86rem; color:var(--ink-60); margin-top:4px; }

/* Process steps */
.steps{ counter-reset:step; display:grid; gap:0; }
.step{ display:grid; grid-template-columns:64px 1fr; gap:20px; padding:28px 0; border-top:1px solid var(--line); }
.step:last-child{ border-bottom:1px solid var(--line); }
.step-num{ font-family:var(--font-head); font-size:1.3rem; color:var(--blue-400); }
.step h4{ margin-bottom:6px; }
.step p{ color:var(--ink-60); margin:0; }

/* FAQ accordion */
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; text-align:left; background:none; border:none;
  padding:22px 4px; display:flex; justify-content:space-between; align-items:center; gap:20px;
  font-family:var(--font-head); font-size:1.05rem; color:var(--navy-950);
}
.faq-q .plus{ position:relative; width:18px; height:18px; flex-shrink:0; }
.faq-q .plus::before, .faq-q .plus::after{ content:''; position:absolute; background:var(--blue-600); transition:transform .2s ease; }
.faq-q .plus::before{ width:100%; height:2px; top:50%; left:0; transform:translateY(-50%); }
.faq-q .plus::after{ width:2px; height:100%; left:50%; top:0; transform:translateX(-50%); }
.faq-item.open .plus::after{ transform:translateX(-50%) rotate(90deg) scaleY(0); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .25s ease; }
.faq-item.open .faq-a{ max-height:400px; }
.faq-a p{ padding:0 4px 22px; color:var(--ink-60); max-width:68ch; }

/* CTA band */
.cta-band{
  background:var(--navy-950);
  color:var(--white);
  border-radius:var(--radius-m);
  padding:56px;
  display:flex; justify-content:space-between; align-items:center; gap:32px; flex-wrap:wrap;
}
.cta-band h3{ color:var(--white); margin-bottom:6px; }
.cta-band p{ color:var(--blue-200); margin:0; }

/* Breadcrumb / page hero (sub-pages) */
.page-hero{
  padding:64px 0 72px;
  background:var(--navy-950);
  color:var(--white);
  position:relative;
  overflow:hidden;
}
.page-hero .container{ position:relative; z-index:2; }
.page-hero .eyebrow{ color:var(--blue-200); }
.page-hero h1{ color:var(--white); max-width:820px; }
.page-hero p.lead{ color:var(--blue-100); font-size:1.15rem; max-width:640px; }
.crumb{ font-size:.85rem; color:var(--blue-200); margin-bottom:20px; display:flex; gap:8px; align-items:center; }
.crumb a:hover{ color:var(--white); }

/* Two column layout */
.split{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
@media (max-width:860px){ .split{ grid-template-columns:1fr; gap:36px; } }

/* Sub-service block */
.subserv{
  display:grid; grid-template-columns:.9fr 1.1fr; gap:48px; align-items:start;
  padding:56px 0; border-top:1px solid var(--line);
}
.subserv:first-of-type{ border-top:none; }
@media (max-width:860px){ .subserv{ grid-template-columns:1fr; gap:24px; } }
.subserv-tag{ font-family:var(--font-head); font-size:1.5rem; color:var(--navy-950); }
.subserv ul.check li{ display:flex; gap:10px; margin-bottom:10px; color:var(--ink-60); }
.subserv ul.check li::before{ content:'✓'; color:var(--blue-600); font-weight:700; flex-shrink:0; }

/* Channel chips */
.chip-row{ display:flex; flex-wrap:wrap; gap:10px; }
.chip{
  display:inline-flex; align-items:center; gap:8px;
  padding:9px 16px; border:1px solid var(--line); border-radius:999px;
  font-size:.88rem; font-weight:500; background:var(--white);
}

/* Case study cards */
.case-card{
  background:var(--white); border:1px solid var(--line); border-radius:var(--radius-m);
  padding:36px; display:flex; flex-direction:column; gap:18px; height:100%;
}
.case-tag{ font-size:.8rem; font-weight:600; color:var(--blue-600); }
.case-result{ font-family:var(--font-head); font-size:1.8rem; color:var(--navy-950); }
.case-card p{ color:var(--ink-60); margin:0; font-size:.95rem; }

/* Trust / cert row */
.trust-row{ display:flex; align-items:center; gap:28px; flex-wrap:wrap; }
.trust-badge{ display:flex; align-items:center; gap:10px; font-size:.88rem; font-weight:600; color:var(--ink-60); }
.trust-badge .dot{ width:8px; height:8px; border-radius:50%; background:var(--amber); }

/* Forms */
.form-grid{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:640px){ .form-grid{ grid-template-columns:1fr; } }
.field{ display:flex; flex-direction:column; gap:6px; }
.field.full{ grid-column:1/-1; }
.field label{ font-size:.86rem; font-weight:600; color:var(--navy-950); }
.field input, .field select, .field textarea{
  padding:13px 14px; border:1.5px solid var(--line); border-radius:var(--radius-s);
  font-family:inherit; font-size:.95rem; background:var(--white); color:var(--navy-950);
}
.field input:focus, .field select:focus, .field textarea:focus{ border-color:var(--blue-600); outline:none; }
.form-note{ font-size:.8rem; color:var(--ink-40); margin-top:14px; }

/* Utility */
.text-center{ text-align:center; }
.mx-auto{ margin-left:auto; margin-right:auto; }
.mt-0{ margin-top:0; }
.gap-list{ display:grid; gap:14px; }

/* ---------- Hero (Home) ---------- */
.hero-section{
  background:var(--navy-950);
  color:var(--white);
  padding:76px 0 88px;
  overflow:hidden;
  position:relative;
}
.hero-section::before{
  content:'';
  position:absolute; inset:0;
  background:radial-gradient(560px 420px at 82% 8%, rgba(53,104,232,.35), transparent 70%);
  pointer-events:none;
}
.hero-inner{
  display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center;
  position:relative; z-index:2;
}
@media (max-width:940px){ .hero-inner{ grid-template-columns:1fr; } }
.hero-copy h1{ color:var(--white); font-size:var(--step-1); }
.hero-copy .lead{ color:var(--blue-100); font-size:1.15rem; max-width:52ch; }
.hero-ctas{ display:flex; gap:14px; margin:30px 0 34px; flex-wrap:wrap; }
.btn-outline-light{ border-color:rgba(255,255,255,.3); color:var(--white); }
.btn-outline-light:hover{ border-color:#fff; }
.trust-badge.light{ color:var(--blue-100); }
.hero-trust{ gap:24px; }

.hero-visual{ position:relative; }
.curve-svg{ width:100%; height:auto; display:block; }
.curve-tags{ position:absolute; inset:0; pointer-events:none; }
.curve-tag{
  position:absolute; display:flex; flex-direction:column;
  background:rgba(10,17,48,.72);
  border:1px solid rgba(255,255,255,.14);
  backdrop-filter:blur(6px);
  padding:8px 12px; border-radius:8px;
  font-size:.76rem; color:var(--blue-100);
  white-space:nowrap;
}
.curve-tag strong{ font-family:var(--font-head); font-size:.85rem; color:var(--white); }
.curve-tag.t1{ left:2%; bottom:2%; }
.curve-tag.t2{ left:36%; top:38%; }
.curve-tag.t3{ right:0; top:0; }
@media (max-width:640px){
  .curve-tag{ font-size:.68rem; padding:6px 9px; }
  .curve-tag strong{ font-size:.74rem; }
}
@media (max-width:520px){
  .curve-tag.t2{ left:26%; }
}

/* ---------- Service grid (home) ---------- */
.service-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:940px){ .service-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:640px){ .service-grid{ grid-template-columns:1fr; } }
.service-card{
  display:block; background:var(--white); border:1px solid var(--line);
  border-radius:var(--radius-m); padding:32px;
  transition:border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.service-card:hover{ border-color:var(--blue-400); transform:translateY(-3px); box-shadow:0 20px 40px rgba(10,17,48,.08); }
.service-num{ font-family:var(--font-head); color:var(--blue-200); font-size:1.1rem; }
.service-card h3{ margin-top:10px; }
.service-card p{ color:var(--ink-60); font-size:.94rem; }
.service-link{ color:var(--blue-600); font-weight:600; font-size:.9rem; }

/* ---------- Case grid ---------- */
.case-section{ background:var(--navy-950); color:var(--white); }
.case-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
@media (max-width:940px){ .case-grid{ grid-template-columns:1fr; } }
.case-section .case-card{ background:var(--navy-900); border-color:rgba(255,255,255,.1); }
.case-section .case-result{ color:var(--white); }
.case-section .case-card p{ color:var(--blue-100); }

.why-section{ background:var(--white); }