:root {
    --helios-bg: #f8f7f3;
    --helios-surface: #ffffff;
    --helios-text: #1f2937;
    --helios-accent: #c77f12;
    --helios-dark: #101826;
    --helios-muted: #5b6677;
    --helios-border: #d4d9e2;
    --helios-radius: 10px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--helios-text);
    background: var(--helios-bg);
    line-height: 1.6;
}

a {
    color: var(--helios-dark);
}

a:hover,
a:focus {
    color: var(--helios-accent);
}

.site-container {
    width: min(1140px, 92vw);
    margin: 0 auto;
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 1rem;
    background: var(--helios-dark);
    color: #fff;
    padding: 0.6rem 1rem;
    border-radius: 6px;
    z-index: 1000;
}

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

.site-header {
    background: var(--helios-surface);
    border-bottom: 1px solid var(--helios-border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 0;
}

.site-title {
    text-decoration: none;
    font-weight: 800;
    font-size: 1.35rem;
}

.main-nav__list,
.footer-nav {
    list-style: none;
    display: flex;
    gap: 1rem;
    margin: 0;
    padding: 0;
}

.main-nav__list a,
.footer-nav a {
    text-decoration: none;
    font-weight: 600;
}

.menu-toggle {
    display: none;
    border: 1px solid var(--helios-border);
    background: #fff;
    border-radius: 6px;
    padding: 0.45rem 0.8rem;
    cursor: pointer;
}

.header-contact a {
    text-decoration: none;
    font-weight: 700;
    color: var(--helios-accent);
}

.hero {
    background: linear-gradient(120deg, rgba(16, 24, 38, 0.95), rgba(16, 24, 38, 0.7)),
        radial-gradient(circle at right top, rgba(199, 127, 18, 0.55), transparent 40%);
    color: #fff;
    padding: 6rem 0;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin: 0.3rem 0 1rem;
    line-height: 1.1;
    max-width: 18ch;
}

.hero__eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
    color: #ffd9a0;
    margin: 0;
}

.hero__text {
    max-width: 58ch;
    font-size: 1.1rem;
    color: #eff2f7;
}

.button {
    display: inline-block;
    margin-top: 0.8rem;
    background: var(--helios-accent);
    color: #111;
    font-weight: 700;
    text-decoration: none;
    padding: 0.75rem 1.2rem;
    border-radius: 8px;
}

.button:hover,
.button:focus {
    background: #d89125;
    color: #111;
}

section {
    padding: 4rem 0;
}

.services__grid,
.posts-grid {
    display: grid;
    gap: 1.2rem;
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.services article,
.posts-grid__item,
.content-card {
    background: var(--helios-surface);
    border: 1px solid var(--helios-border);
    border-radius: var(--helios-radius);
    padding: 1.2rem;
}

.why-helios {
    background: #eef1f5;
}

.why-helios ul {
    margin: 0;
    padding-left: 1.2rem;
}

.page-header {
    padding: 2rem 0 1rem;
}

.entry-content,
.comments-area {
    background: var(--helios-surface);
    border: 1px solid var(--helios-border);
    border-radius: var(--helios-radius);
    padding: 1.2rem;
}

.meta {
    color: var(--helios-muted);
    font-size: 0.95rem;
}

.site-footer {
    background: var(--helios-dark);
    color: #d7dce8;
    margin-top: 4rem;
}

.site-footer a {
    color: #f0b657;
}

.site-footer p a {
    text-decoration: none;
}

.site-footer p a:hover,
.site-footer p a:focus {
    text-decoration: none;
}

.site-footer__grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    padding: 2.6rem 0;
}

.site-footer__heading {
    margin-top: 0;
    color: #fff;
    font-size: 1.1rem;
}

.site-footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    padding: 0.9rem 0;
    font-size: 0.95rem;
}

@media (max-width: 900px) {
    .services__grid,
    .posts-grid,
    .site-footer__grid {
        grid-template-columns: 1fr;
    }

    .header-contact {
        display: none;
    }

    .menu-toggle {
        display: inline-block;
    }

    .main-nav {
        display: none;
        width: 100%;
    }

    .main-nav.is-open {
        display: block;
    }

    .site-header__inner {
        flex-wrap: wrap;
    }

    .main-nav__list {
        flex-direction: column;
        padding-top: 0.5rem;
    }
}