:root{
--c-primary-50:#f5f6f7;
--c-primary-100:#e9ebed;
--c-primary-200:#d3d7db;
--c-primary-300:#afb6bd;
--c-primary-400:#828d97;
--c-primary-500:#636f79;
--c-primary-600:#4d5862;
--c-primary-700:#3b444c;
--c-primary-800:#2a3037;
--c-primary-900:#1c2126;

--c-accent:#3a6b7a;
--c-accent-light:#4d8395;
--c-accent-dark:#2a505c;

--c-success:#2d7a4a;
--c-warning:#b58a1e;
--c-error:#b53d3d;

--c-white:#fff;
--c-off-white:#fafafa;
--c-bg:#f7f8f9;
--c-surface:#fff;
--c-text:var(--c-primary-800);
--c-text-muted:var(--c-primary-500);
--c-border:var(--c-primary-200);
--c-border-strong:var(--c-primary-300);

--header-h:74px;
--max-w:1180px;
--radius:10px;
--radius-sm:6px;
--radius-lg:16px;
--transition:0.3s cubic-bezier(0.4,0,0.2,1);
--shadow-sm:0 1px 3px rgba(0,0,0,0.07),0 1px 2px rgba(0,0,0,0.05);
--shadow-md:0 4px 14px rgba(0,0,0,0.09),0 2px 6px rgba(0,0,0,0.05);
--shadow-lg:0 14px 44px rgba(0,0,0,0.14),0 4px 14px rgba(0,0,0,0.07);

--font-body:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

body{
font-family:var(--font-body);
background:var(--c-bg);
color:var(--c-text);
font-size:17px;
line-height:1.7;
}
h1,h2,h3,h4,h5,h6{
font-weight:600;
line-height:1.25;
color:var(--c-primary-800);
letter-spacing:-0.018em;
}
h1{font-size:clamp(2rem,5vw,2.9rem);line-height:1.15}
h2{font-size:clamp(1.55rem,4vw,2.15rem)}
h3{font-size:clamp(1.2rem,3vw,1.45rem)}
h4{font-size:1.1rem}
p{max-width:72ch}