:root {
    --bg: #ffffff;
    --bg-soft: #f7f9fc;
    --bg-tint: #eef6ff;
    --accent: #3b82f6;
    --accent-2: #14b8a6;
    --accent-3: #f59e0b;
    --text: #111827;
    --text-secondary: #6b7280;
    --border: #e5e7eb;
    --radius-btn: 8px;
    --radius-card: 12px;
    --container: 1100px;
    --shadow-soft: 0 18px 36px rgba(17, 24, 39, 0.1);
    --shadow-card: 0 10px 26px rgba(17, 24, 39, 0.08);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    color: var(--text);
    background: var(--bg);
    line-height: 1.6;
}

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

a {
    color: var(--accent);
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 56px 0;
}

.section-title {
    margin: 0 0 14px;
    font-size: clamp(1.5rem, 3.2vw, 2.1rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-subtitle {
    margin: 0 0 22px;
    color: var(--text-secondary);
    max-width: 700px;
}

.card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
}

.btn {
    border: 0;
    border-radius: var(--radius-btn);
    min-height: 48px;
    padding: 0 20px;
    font-size: 1rem;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(130deg, #3b82f6, #2563eb 55%, #1d4ed8);
    box-shadow: 0 12px 26px rgba(37, 99, 235, 0.32);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 180ms ease, box-shadow 180ms ease, filter 180ms ease;
}

.btn:hover,
.btn:focus-visible {
    transform: translateY(-2px) translateX(-50%);
    box-shadow: 0 20px 34px rgba(37, 99, 235, 0.38);
    filter: brightness(1.04);
}

.btn--ghost {
    background: #fff;
    color: var(--text);
    border: 1px solid var(--border);
    box-shadow: 0 8px 16px rgba(17, 24, 39, 0.08);
}

.reveal {
    opacity: 1;
    transform: none;
}

.js .reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 500ms ease, transform 500ms ease;
}

.js .reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 1ms !important;
        scroll-behavior: auto !important;
    }

    .js .reveal,
    .js .reveal.is-visible {
        opacity: 1;
        transform: none;
    }
}