/* ===== Design tokens ===== */
:root{
  --navy-950:#0a1a29;
  --navy-900:#0f2436;
  --navy-800:#16324a;
  --navy-700:#1c3d5a;
  --steel-200:#c7d3dc;
  --steel-100:#e7edf1;
  --paper:#f7f9fa;
  --white:#ffffff;
  --ink:#132433;
  --ink-soft:#4a5c6b;
  --accent:#e8890c;
  --accent-dark:#c46f05;
  --line:#e1e8ec;
  --radius:14px;
  --shadow:0 10px 30px rgba(15,36,54,.08);
  --shadow-lg:0 20px 50px rgba(15,36,54,.14);
  --max-w:1160px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{line-height:1.2;margin:0 0 .5em;font-weight:700;color:var(--navy-900)}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}

.container{max-width:var(--max-w);margin:0 auto;padding:0 24px}

.skip-link{
  position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;
  padding:10px 16px;border-radius:0 0 8px 0;z-index:200;
}
.skip-link:focus{left:0}

/* ===== Buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:11px 20px;border-radius:999px;font-weight:600;font-size:.95rem;
  text-decoration:none;border:2px solid transparent;transition:.2s ease;cursor:pointer;
}
.btn svg{width:18px;height:18px}
.btn-lg{padding:14px 26px;font-size:1rem}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:var(--accent-dark)}
.btn-outline{border-color:var(--navy-700);color:var(--navy-800)}
.btn-outline:hover{background:var(--navy-800);color:#fff}
.btn-outline-light{border-color:rgba(255,255,255,.6);color:#fff}
.btn-outline-light:hover{background:rgba(255,255,255,.15)}

/* ===== Header ===== */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(247,249,250,.92);backdrop-filter:blur(8px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 24px}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo-mark{
  width:42px;height:42px;flex:0 0 auto;border-radius:10px;
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));
  color:var(--accent);display:flex;align-items:center;justify-content:center;padding:9px;
}
.logo-mark svg{width:100%;height:100%}
.logo-text{display:flex;flex-direction:column;line-height:1.15}
.logo-name{font-weight:700;color:var(--navy-900);font-size:1.05rem}
.logo-sub{font-size:.75rem;color:var(--ink-soft)}

.nav-toggle{
  display:none;background:none;border:none;padding:8px;cursor:pointer;color:var(--navy-900);
}
.nav-toggle svg{width:26px;height:26px}
.nav-toggle .icon-close{display:none}

.main-nav{display:flex;align-items:center;gap:28px}
.main-nav ul{display:flex;gap:22px}
.main-nav a{
  text-decoration:none;color:var(--ink-soft);font-weight:600;font-size:.95rem;
  padding:6px 2px;border-bottom:2px solid transparent;transition:.2s;
}
.main-nav a:hover,.main-nav a.active{color:var(--navy-900);border-color:var(--accent)}
.nav-cta{white-space:nowrap}

/* ===== Hero ===== */
.hero{
  background:radial-gradient(1100px 500px at 80% -10%,rgba(232,137,12,.15),transparent),
             linear-gradient(180deg,var(--navy-950),var(--navy-900) 60%,var(--navy-800));
  color:#fff;padding:76px 0 88px;
}
.hero-inner{display:flex;align-items:center;gap:40px}
.hero-content{flex:1 1 560px;max-width:640px}
.eyebrow{
  text-transform:uppercase;letter-spacing:.08em;font-size:.8rem;font-weight:700;
  color:var(--accent);margin-bottom:14px;
}
.hero h1{color:#fff;font-size:clamp(1.8rem,3.4vw,2.6rem);margin-bottom:.5em}
.hero-lead{color:var(--steel-200);font-size:1.08rem;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin:26px 0 16px}
.hero-note{color:#8fa2b3;font-size:.85rem}

.hero-visual{
  flex:0 0 auto;position:relative;width:220px;height:220px;display:none;
}
.hero-icon{
  position:absolute;border-radius:24px;
  background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.12);
  color:var(--accent);padding:34px;
}
.hero-icon svg{width:60px;height:60px}
.hero-icon:first-child{top:0;left:20px;width:150px;height:150px}
.hero-icon--bolt{bottom:0;right:0;width:110px;height:110px;color:#7fd0ff}

@media(min-width:860px){
  .hero-visual{display:block}
}

/* ===== Sections ===== */
.section{padding:64px 0}
.section-alt{background:var(--steel-100)}
.section-title{font-size:clamp(1.4rem,2.4vw,1.9rem)}

.cards-grid{
  display:grid;gap:24px;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  margin-top:32px;
}
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow);
}
.card-icon{
  width:48px;height:48px;border-radius:12px;background:var(--navy-900);color:var(--accent);
  display:flex;align-items:center;justify-content:center;padding:11px;margin-bottom:16px;
}
.card-icon svg{width:100%;height:100%}
.card h3{font-size:1.1rem}
.card p{color:var(--ink-soft);margin:0;font-size:.96rem}

.section-cta{margin-top:32px;text-align:center}

/* ===== Split layout ===== */
.split{display:grid;gap:40px;grid-template-columns:1fr;align-items:start}
@media(min-width:800px){
  .split{grid-template-columns:1.1fr .9fr}
}
.split-panel{
  background:var(--navy-900);color:#fff;border-radius:var(--radius);
  padding:32px;box-shadow:var(--shadow-lg);
}
.split-panel h3{color:#fff}
.split-panel p{color:var(--steel-200)}
.split-panel--contacts{background:var(--white);color:var(--ink);box-shadow:var(--shadow)}
.split-panel--contacts h2{color:var(--navy-900)}

.check-list li{
  display:flex;gap:12px;align-items:flex-start;margin-bottom:14px;color:var(--ink-soft);
}
.check-list-icon{
  flex:0 0 auto;width:22px;height:22px;border-radius:50%;background:rgba(232,137,12,.15);
  color:var(--accent-dark);display:flex;align-items:center;justify-content:center;padding:4px;margin-top:2px;
}
.check-list-icon svg{width:100%;height:100%}

.link-arrow{
  display:inline-block;margin-top:8px;font-weight:700;color:var(--navy-800);text-decoration:none;
}
.link-arrow:hover{color:var(--accent-dark)}

/* ===== Steps ===== */
.steps-list{margin-top:24px}
.steps-list li{display:flex;gap:16px;margin-bottom:24px}
.steps-num{
  flex:0 0 auto;width:36px;height:36px;border-radius:50%;
  background:var(--navy-900);color:var(--accent);font-weight:700;
  display:flex;align-items:center;justify-content:center;
}
.steps-list h3{font-size:1.02rem;margin-bottom:.2em}
.steps-list p{color:var(--ink-soft);margin:0;font-size:.95rem}

/* ===== CTA block ===== */
.section-cta-block{
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));color:#fff;
}
.cta-block-inner{
  display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between;
}
.section-cta-block h2{color:#fff;margin-bottom:.3em}
.section-cta-block p{color:var(--steel-200);margin:0}
.cta-block-actions{display:flex;flex-wrap:wrap;gap:14px}

/* ===== Contact methods ===== */
.contact-methods{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.contact-method{
  display:flex;align-items:center;gap:14px;padding:14px 16px;border-radius:12px;
  text-decoration:none;color:inherit;background:rgba(255,255,255,.04);
  border:1px solid rgba(255,255,255,.08);transition:.2s;
}
.split-panel--contacts .contact-method{background:var(--steel-100);border-color:var(--line)}
.contact-method:hover{background:rgba(232,137,12,.18);border-color:var(--accent)}
.contact-method-icon{
  flex:0 0 auto;width:38px;height:38px;border-radius:10px;background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;padding:9px;
}
.contact-method-icon svg{width:100%;height:100%}
.contact-method-label{display:block;font-size:.75rem;opacity:.75;text-transform:uppercase;letter-spacing:.04em}
.contact-method-value{display:block;font-weight:700}

.contact-methods--compact .contact-method{padding:10px 12px}
.contact-methods--compact .contact-method-icon{width:32px;height:32px;padding:7px}

.contacts-note{margin-top:18px;color:var(--ink-soft);font-size:.9rem}

/* ===== Footer ===== */
.site-footer{background:var(--navy-950);color:var(--steel-200)}
.footer-inner{
  display:grid;gap:36px;padding:56px 24px 36px;
  grid-template-columns:1.2fr 1fr 1.2fr;
}
.footer-logo .logo-name{color:#fff}
.footer-logo .logo-sub{color:#8fa2b3}
.footer-tagline{margin-top:14px;color:#8fa2b3;font-size:.92rem;max-width:34ch}
.footer-col h3{color:#fff;font-size:.95rem;text-transform:uppercase;letter-spacing:.05em;margin-bottom:14px}
.footer-nav ul{display:flex;flex-direction:column;gap:10px}
.footer-nav a{text-decoration:none;color:#c7d3dc;font-size:.95rem}
.footer-nav a:hover{color:var(--accent)}
.footer-contacts .contact-methods{margin-top:0}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);padding:18px 0}
.footer-bottom p{margin:0;text-align:center;color:#7188a0;font-size:.85rem}

@media(max-width:820px){
  .footer-inner{grid-template-columns:1fr;padding:44px 24px 28px}
}

/* ===== Projects page ===== */
.project-card{
  display:flex;gap:24px;align-items:flex-start;background:var(--white);
  border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow);
}
.project-card--featured{
  background:linear-gradient(135deg,var(--navy-900),var(--navy-700));color:#fff;border:none;
  box-shadow:var(--shadow-lg);margin-bottom:32px;
}
.project-card-icon{
  flex:0 0 auto;width:56px;height:56px;border-radius:14px;background:rgba(232,137,12,.2);
  color:var(--accent);display:flex;align-items:center;justify-content:center;padding:13px;
}
.project-card-icon svg{width:100%;height:100%}
.project-card--featured h2{color:#fff}
.project-card--featured p{color:var(--steel-200)}
.project-tag{
  display:inline-block;font-size:.75rem;font-weight:700;text-transform:uppercase;
  letter-spacing:.04em;color:var(--accent);margin-bottom:8px;
}
.project-card--featured .project-tag{color:#ffb85c}
.cards-grid--projects{margin-top:24px}
.projects-note{margin-top:28px;color:var(--ink-soft);font-size:.92rem}

/* ===== Page hero (inner pages) ===== */
.page-hero{
  background:linear-gradient(180deg,var(--navy-950),var(--navy-800));color:#fff;padding:56px 0;
}
.page-hero h1{color:#fff;font-size:clamp(1.6rem,3vw,2.2rem)}
.page-hero-lead{color:var(--steel-200);max-width:60ch;margin:0}

.error-page{text-align:center;padding-top:96px;padding-bottom:96px}
.error-page .hero-actions{justify-content:center}

/* ===== Mobile nav ===== */
@media(max-width:900px){
  .nav-toggle{display:inline-flex}
  .main-nav{
    position:fixed;inset:70px 0 0 0;background:var(--navy-950);
    flex-direction:column;align-items:flex-start;justify-content:flex-start;
    padding:28px 24px;gap:24px;transform:translateX(100%);transition:transform .25s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{transform:translateX(0)}
  .main-nav ul{flex-direction:column;gap:18px;width:100%}
  .main-nav a{color:#e7edf1;font-size:1.1rem;display:block}
  .main-nav a.active{color:var(--accent)}
  .nav-cta{width:100%;justify-content:center}
  .nav-toggle[aria-expanded="true"] .icon-open{display:none}
  .nav-toggle[aria-expanded="true"] .icon-close{display:inline-flex}
}