:root {
    --primary: #0f172a;
    --primary-dark: #0b1220;
    --secondary: #1f2937;
    --muted: #5b6473;
    --surface: #ffffff;
    --surface-alt: #f4f7fb;
    --surface-soft: #edf4ff;
    --accent: #1b8cff;
    --accent-strong: #0c6ae0;
    --accent-soft: #dfeeff;
    --success: #10b981;
    --success-soft: rgba(16, 185, 129, 0.12);
    --border: rgba(15, 23, 42, 0.1);
    --shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
    --shadow-soft: 0 12px 24px rgba(15, 23, 42, 0.04);
    --radius-sm: 0.75rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-pill: 999px;
    --container-width: 1120px;
    --transition-base: 0.28s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background: #ffffff;
    color: var(--secondary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

* {
    box-sizing: border-box;
}

img {
    max-width: 100%;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button,
input,
textarea,
select {
    font: inherit;
}

.container {
    width: min(var(--container-width), calc(100% - 2rem));
    margin: 0 auto;
}

.section {
    padding: 5rem 0;
}

.section--alt {
    background: var(--surface-alt);
}

.eyebrow {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent-strong);
    background: var(--accent-soft);
    padding: 0.55rem 0.8rem;
    border-radius: var(--radius-pill);
}

.eyebrow--dark {
    background: rgba(27, 140, 255, 0.08);
}

.section-heading {
    max-width: 760px;
    margin: 0 auto 2.25rem;
    text-align: center;
}

.section-heading--left {
    margin-left: 0;
    text-align: left;
}

.section-heading h2 {
    margin: 0.8rem 0 0;
    font-size: clamp(2rem, 3vw, 3rem);
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--primary);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-pill);
    padding: 0.9rem 1.4rem;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn--primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-strong));
    color: #fff;
    box-shadow: 0 16px 28px rgba(27, 140, 255, 0.28);
}

.btn--secondary {
    background: #fff;
    border: 1px solid var(--border);
    color: var(--primary);
}

.site-header,
.site-footer,
.hero,
.section,
.cta-band,
.card-grid,
.feature-list,
.timeline,
.stats-grid,
.service-list,
.value-grid,
.process-grid {
    position: relative;
}

@media (max-width: 640px) {
    .section {
        padding: 4rem 0;
    }
}