:root {
    --clr-primary: #1d4ed8;
    --clr-primary-dark: #1e3a8a;
    --clr-secondary: #14b8a6;
    --clr-accent: #f97316;
    --clr-neutral-900: #0f172a;
    --clr-neutral-700: #334155;
    --clr-neutral-500: #64748b;
    --clr-neutral-200: #e2e8f0;
    --clr-neutral-50: #f8fafc;
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --shadow-soft: 0 15px 35px rgba(15, 23, 42, 0.1);
    --max-width: 1200px;
}

body {
    background-color: var(--clr-neutral-50);
}

.site {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-main {
    flex: 1 0 auto;
}

.site-header {
    background-color: #fff;
    border-bottom: 1px solid rgba(15, 23, 42, 0.06);
    position: sticky;
    top: 0;
    z-index: 99;
    backdrop-filter: blur(12px);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    min-height: 80px;
}

.site-header__toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: transparent;
    border-radius: var(--radius-md);
    border: 1px solid var(--clr-neutral-200);
    cursor: pointer;
}

.site-header__toggle-icon,
.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
    display: block;
    width: 18px;
    height: 2px;
    background-color: var(--clr-neutral-900);
    content: "";
    position: relative;
    transition: transform 0.3s ease;
}

.site-header__toggle-icon::before,
.site-header__toggle-icon::after {
    position: absolute;
    left: 0;
}

.site-header__toggle-icon::before {
    top: -6px;
}

.site-header__toggle-icon::after {
    top: 6px;
}

.site-navigation {
    position: fixed;
    inset: 0 0 auto 0;
    background-color: #fff;
    padding: 5.5rem 1.5rem 2rem;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.site-navigation.is-open {
    transform: translateY(0);
}

.site-navigation ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    font-weight: 600;
}

.site-navigation a {
    color: var(--clr-neutral-900);
    font-size: 1.05rem;
}

.site-navigation a:hover,
.site-navigation a:focus-visible {
    color: var(--clr-primary);
}

@media (min-width: 1024px) {
    .site-header__toggle {
        display: none;
    }

    .site-navigation {
        position: static;
        transform: none;
        padding: 0;
    }

    .site-navigation ul {
        flex-direction: row;
        gap: 2rem;
        align-items: center;
    }
}

.site-footer {
    background-color: var(--clr-neutral-900);
    color: #fff;
    padding-top: 4rem;
}

.container {
    width: min(100%, var(--max-width));
    margin-inline: auto;
    padding-inline: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.75rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: transform 0.2s ease, box-shadow 0.3s ease, background-color 0.3s ease;
    border: none;
    cursor: pointer;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--clr-primary);
    color: #fff;
    box-shadow: var(--shadow-soft);
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background-color: var(--clr-primary-dark);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: transparent;
    color: var(--clr-primary);
    border: 1.5px solid var(--clr-primary);
}

.btn-outline:hover,
.btn-outline:focus-visible {
    background-color: var(--clr-primary);
    color: #fff;
}

.hero {
    padding-block: clamp(4rem, 8vw, 7rem);
    background: linear-gradient(135deg, rgba(29, 78, 216, 0.1), rgba(20, 184, 166, 0.08));
}

.hero__eyebrow {
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-secondary);
    font-weight: 600;
}

.hero__title {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    margin-bottom: 1rem;
}

.hero__description {
    max-width: 48ch;
    color: var(--clr-neutral-700);
    font-size: 1.1rem;
}

.cards-grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .cards-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1024px) {
    .cards-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

.card {
    background-color: #fff;
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.card__eyebrow {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-secondary);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.card__title {
    font-size: 1.5rem;
    color: var(--clr-neutral-900);
    margin-bottom: 0.75rem;
}

.card__meta {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--clr-neutral-500);
}

.skip-link {
    position: absolute;
    top: -100%;
    left: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--clr-primary);
    color: #fff;
    z-index: 999;
    border-radius: var(--radius-sm);
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 1rem;
}

.footer-cta {
    background: linear-gradient(120deg, rgba(29, 78, 216, 0.85), rgba(20, 184, 166, 0.85));
    color: #fff;
    padding: clamp(3rem, 6vw, 4rem) 0;
}

.footer-cta__inner {
    display: grid;
    gap: 1.5rem;
}

.footer-cta__eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    opacity: 0.85;
}

.footer-cta__title {
    font-size: clamp(2rem, 3.5vw, 2.6rem);
    margin-bottom: 0.75rem;
}

.footer-cta__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 1.5rem;
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    background-color: var(--clr-primary);
    color: #fff;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-soft);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.back-to-top.is-visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(-6px);
}

.accessibility-toolbar {
    position: fixed;
    right: 1rem;
    top: 30%;
    z-index: 100;
    display: grid;
    gap: 0.5rem;
}

.accessibility-toolbar__toggle {
    background-color: var(--clr-neutral-900);
    color: #fff;
    border: none;
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
}

.accessibility-toolbar__menu {
    list-style: none;
    background-color: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-soft);
    padding: 0.75rem;
    display: grid;
    gap: 0.5rem;
}

.accessibility-toolbar__menu button {
    border: none;
    background: transparent;
    color: var(--clr-neutral-900);
    text-align: left;
    font-size: 0.95rem;
    cursor: pointer;
}

.accessibility-toolbar__menu button:hover,
.accessibility-toolbar__menu button:focus-visible {
    color: var(--clr-primary);
}

body.is-high-contrast {
    filter: contrast(1.2) saturate(1.25);
}

@media (min-width: 768px) {
    .footer-cta__inner {
        grid-template-columns: 2fr 1fr;
        align-items: center;
    }
}