html {
    scroll-behavior: smooth;
    background-color: #f8f9fa;
    color: #1c2b3a;
    --base: #F8F9FA;
    --accent: #0A2540;
    --gold: #D4AF37;
    --textmain: #1C2B3A;
    --divider: #E5E7EB;
    --circuit: #64748B;
    --primary: rgb(243, 110, 32);
    --secondary: #f8f9fa;
}

::-webkit-scrollbar {
    width: 0px;
}

body {
    font-size: 18px;
    line-height: 1.7;
    box-sizing: border-box;
}

.hero-bg-canvas {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.circuit-bg {
    background-color: #f8f9fa;
    background-image:
        linear-gradient(to right,
            rgba(100, 116, 139, 0.08) 1px,
            transparent 1px),
        linear-gradient(to bottom,
            rgba(100, 116, 139, 0.08) 1px,
            transparent 1px);
    background-size: 40px 40px;
}

.btn-tech {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 32px;
    font-family: "JetBrains Mono", monospace;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 2px solid var(--primary);
    background: var(--primary);
    color: var(--secondary);
    transition: all 0.2s ease-out;
}

.btn-tech-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 32px;
    font-family: "JetBrains Mono", monospace;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: 2px solid var(--primary);
    background: transparent;
    color: var(--secondary);
    transition: all 0.2s ease-out;
}

.btn-tech:hover,
.btn-tech-secondary:hover,
.btn-tech:focus-visible {
    transform: translateY(-2px);
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgb(243, 110, 32, 0.5);
    outline: none;
}

.btn-gold {
    background: var(--primary);
    color: var(--accent);
    border: 2px solid var(--primary);
}

.btn-gold:hover,
.btn-gold:focus-visible {
    background: #f8f9fa;
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(212, 175, 55, 0.35);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary) !important;
    box-shadow: 0 0 0 1px var(--primary) !important;
}

details>summary {
    list-style: none;
}

details>summary::-webkit-details-marker {
    display: none;
}

/* ── Progress bar ── */
#prog {
    position: fixed;
    top: 57px;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, #F9A825, var(--primary));
    z-index: 60;
    width: 0;
    transition: width .1s linear;
}