:root {
    --primary: #0079d0;
    --secondary: #00bfa5;
    --accent: #ffcb2f;
    --ink: #0f172a;
    --muted: #64748b;
    --surface: rgba(255, 255, 255, 0.94);
    --surface-strong: #ffffff;
    --surface-soft: rgba(239, 248, 255, 0.92);
    --border: rgba(15, 23, 42, 0.08);
    --shadow: 0 20px 60px rgba(15, 23, 42, 0.12);
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 18px;
    --radius-sm: 14px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Inter", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(0, 121, 208, 0.18), transparent 28%),
        radial-gradient(circle at top right, rgba(0, 191, 165, 0.16), transparent 24%),
        linear-gradient(180deg, #f8fbff 0%, #eef6fb 100%);
}

.main-site-shell {
    width: min(1280px, calc(100% - 2rem));
    margin: 0 auto;
}

.main-site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.9);
    border-bottom: 1px solid rgba(226, 232, 240, 0.9);
}

.main-site-header__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
    min-height: 4rem;
}

.main-site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    min-width: fit-content;
}

.main-site-brand__mark {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 0.75rem;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 10px 24px rgba(0, 121, 208, 0.24);
}

.main-site-brand__text {
    font-family: "Poppins", sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.main-site-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    flex: 1;
}

.main-site-nav a {
    color: var(--muted);
    font-size: 0.92rem;
    transition: color 0.2s ease;
}

.main-site-nav a:hover,
.main-site-nav a[aria-current="page"] {
    color: var(--primary);
}

.main-site-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    min-height: 2.75rem;
    padding: 0.75rem 1.5rem;
    border-radius: 999px;
    font-size: 0.875rem;
    font-weight: 600;
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 14px 30px rgba(0, 121, 208, 0.22);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.main-site-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 34px rgba(0, 121, 208, 0.3);
}

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

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

.container {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 30;
    backdrop-filter: blur(14px);
    background: rgba(248, 251, 255, 0.8);
    border-bottom: 1px solid rgba(148, 163, 184, 0.16);
}

.header-row,
.footer-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    min-height: 76px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.9rem;
    font-weight: 800;
    font-family: "Poppins", sans-serif;
}

.brand-mark {
    width: 46px;
    height: 46px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 14px 30px rgba(0, 121, 208, 0.24);
}

.brand-text {
    font-size: 1.15rem;
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    color: var(--muted);
    font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
    color: var(--primary);
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    min-height: 48px;
    padding: 0 1.25rem;
    border-radius: 999px;
    font-weight: 700;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    box-shadow: 0 14px 30px rgba(0, 121, 208, 0.22);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.9);
    color: var(--ink);
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.hero-shell {
    padding: 4.5rem 0 2rem;
}

.hero-card,
.article-card,
.sidebar-card,
.feature-card,
.template-card,
.mini-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.hero-card {
    padding: clamp(2rem, 4vw, 3.5rem);
    overflow: hidden;
    position: relative;
}

.hero-grid,
.feature-grid,
.content-grid,
.post-grid,
.template-grid,
.footer-grid {
    display: grid;
    gap: 1.5rem;
}

.hero-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, 0.8fr);
    align-items: center;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.45rem 0.85rem;
    border-radius: 999px;
    background: rgba(0, 121, 208, 0.1);
    color: var(--primary);
    font-size: 0.82rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.hero-title,
.section-title,
.article-title,
.template-title {
    font-family: "Poppins", sans-serif;
    line-height: 1.1;
    margin: 1rem 0;
}

.hero-title {
    font-size: clamp(2.4rem, 4.2vw, 4.5rem);
    max-width: 13ch;
}

.hero-text,
.section-text,
.article-summary,
.article-meta,
.muted {
    color: var(--muted);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-top: 2rem;
}

.hero-panel,
.feature-card,
.template-card,
.sidebar-card,
.mini-card {
    padding: 1.6rem;
}

.hero-panel {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.98), rgba(30, 41, 59, 0.95));
    color: #fff;
    border-radius: var(--radius-xl);
}

.hero-panel ul,
.sidebar-card ul,
.article-card ul,
.article-card ol {
    padding-left: 1.2rem;
}

.hero-panel li,
.sidebar-card li,
.article-card li {
    margin-bottom: 0.75rem;
}

.section-shell {
    padding: 1.5rem 0 4rem;
}

.section-head {
    margin-bottom: 2rem;
}

.section-title {
    font-size: clamp(1.9rem, 3vw, 3rem);
}

.feature-grid,
.post-grid,
.template-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.content-grid {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 320px);
    align-items: start;
}

.card-kicker {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.3rem 0.75rem;
    border-radius: 999px;
    background: rgba(0, 191, 165, 0.12);
    color: #047857;
    font-size: 0.8rem;
    font-weight: 700;
}

.post-card {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    padding: 1.7rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.post-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 121, 208, 0.35);
}

.post-card h3 {
    font-family: "Poppins", sans-serif;
    font-size: 1.35rem;
    line-height: 1.25;
    margin: 1rem 0 0.75rem;
}

.post-card p {
    color: var(--muted);
    line-height: 1.7;
    flex: 1;
}

.post-meta,
.article-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
    color: var(--muted);
    font-size: 0.92rem;
}

.post-footer-link {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    margin-top: 1.25rem;
    color: var(--primary);
    font-weight: 700;
}

.article-layout {
    padding: 3rem 0 4rem;
}

.article-card {
    padding: clamp(1.6rem, 3vw, 3rem);
}

.article-title {
    font-size: clamp(2rem, 4vw, 3.7rem);
    max-width: 18ch;
}

.article-summary {
    font-size: 1.08rem;
    max-width: 68ch;
}

.hero-image,
.article-visual {
    margin-top: 2rem;
    min-height: 240px;
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.08);
    background:
        linear-gradient(135deg, rgba(0, 121, 208, 0.92), rgba(0, 191, 165, 0.92)),
        linear-gradient(45deg, rgba(255, 255, 255, 0.08), transparent);
    color: #fff;
    display: grid;
    place-items: center;
    padding: 2rem;
    text-align: left;
}

.visual-grid {
    width: min(100%, 480px);
    display: grid;
    gap: 1rem;
}

.visual-strip {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.9rem;
}

.visual-chip {
    padding: 0.95rem 1rem;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.14);
}

.article-card h2 {
    font-family: "Poppins", sans-serif;
    font-size: 1.55rem;
    margin-top: 2.4rem;
    margin-bottom: 0.9rem;
}

.article-card h3 {
    font-family: "Poppins", sans-serif;
    font-size: 1.15rem;
    margin-top: 1.7rem;
    margin-bottom: 0.65rem;
}

.article-card p,
.article-card li {
    color: #334155;
    line-height: 1.8;
}

.article-card strong {
    color: var(--ink);
}

.callout {
    margin: 1.6rem 0;
    padding: 1.2rem 1.2rem 1.2rem 1.3rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 121, 208, 0.15);
    background: linear-gradient(135deg, rgba(0, 121, 208, 0.08), rgba(0, 191, 165, 0.08));
}

.callout strong {
    display: block;
    margin-bottom: 0.35rem;
}

.checklist {
    list-style: none;
    padding: 0;
}

.checklist li {
    position: relative;
    padding-left: 1.8rem;
}

.checklist li::before {
    content: "•";
    position: absolute;
    left: 0.4rem;
    top: 0;
    color: var(--secondary);
    font-weight: 900;
}

.toc {
    list-style: none;
    padding: 0;
    margin: 1rem 0 0;
}

.toc li + li {
    margin-top: 0.7rem;
}

.toc a {
    color: var(--muted);
}

.toc a:hover {
    color: var(--primary);
}

.quote-box {
    padding: 1.35rem 1.4rem;
    border-left: 4px solid var(--accent);
    background: rgba(255, 203, 47, 0.12);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: #475569;
}

.template-card {
    min-height: 100%;
}

.template-card h3 {
    font-family: "Poppins", sans-serif;
    margin: 1rem 0 0.65rem;
}

.footer-shell {
    padding: 1rem 0 2.8rem;
}

.main-site-footer {
    margin-top: 2rem;
    padding: 3rem 0;
    background: #111827;
    color: #fff;
}

.main-site-footer__grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.main-site-brand--footer {
    margin-bottom: 1rem;
}

.main-site-footer__text {
    margin: 0;
    color: #9ca3af;
    font-size: 0.95rem;
    line-height: 1.7;
}

.main-site-footer h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    font-size: 1rem;
    color: #fff;
}

.main-site-footer__links {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 0.65rem;
}

.main-site-footer__links li,
.main-site-footer__contact li {
    color: #9ca3af;
    font-size: 0.95rem;
}

.main-site-footer__links a {
    color: inherit;
    transition: color 0.2s ease;
}

.main-site-footer__links a:hover,
.main-site-footer__bottom a:hover {
    color: #fff;
}

.main-site-footer__contact li {
    display: flex;
    align-items: center;
    gap: 0.55rem;
}

.main-site-footer__contact i {
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.main-site-footer__bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    color: #6b7280;
    font-size: 0.9rem;
}

.main-site-footer__bottom p {
    margin: 0;
}

.main-site-footer__bottom a {
    color: #ffcb2f;
}

.footer-grid {
    grid-template-columns: minmax(0, 1.4fr) repeat(2, minmax(0, 1fr));
    padding: 1.7rem 0 0;
    border-top: 1px solid rgba(148, 163, 184, 0.2);
    color: var(--muted);
}

.footer-grid h4 {
    color: var(--ink);
    margin-bottom: 0.75rem;
    font-family: "Poppins", sans-serif;
}

.footer-grid a:hover {
    color: var(--primary);
}

.code-sample {
    margin: 1.4rem 0;
    padding: 1rem 1.2rem;
    border-radius: var(--radius-md);
    background: #0f172a;
    color: #e2e8f0;
    overflow-x: auto;
}

@media (max-width: 980px) {
    .site-nav {
        display: none;
    }

    .main-site-header__row,
    .main-site-footer__bottom {
        flex-direction: column;
        align-items: stretch;
    }

    .main-site-nav {
        display: none;
    }

    .main-site-footer__grid {
        grid-template-columns: 1fr;
    }

    .hero-grid,
    .content-grid,
    .feature-grid,
    .post-grid,
    .template-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .header-row,
    .footer-row,
    .hero-actions,
    .header-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-shell {
        padding-top: 2rem;
    }

    .brand {
        justify-content: center;
    }

    .main-site-brand {
        justify-content: center;
    }

    .main-site-cta {
        width: 100%;
    }

    .post-meta,
    .article-meta-row {
        flex-direction: column;
        gap: 0.45rem;
    }
}