* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg: #f8fafc;
    --surface: rgba(255, 255, 255, 0.72);
    --surface-2: rgba(255, 255, 255, 0.88);
    --card: rgba(255, 255, 255, 0.92);
    --text: #0f172a;
    --muted: rgba(15, 23, 42, 0.72);
    --border: rgba(15, 23, 42, 0.12);
    --border-strong: rgba(15, 23, 42, 0.18);
    --accent: #2563eb;
    --accent-2: #10b981;
    --accent-rgb: 37, 99, 235;
    --accent-2-rgb: 16, 185, 129;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.10);
    --shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.16);
    --radius: 0.875rem;
    --transition: 220ms cubic-bezier(0.2, 0.8, 0.2, 1);
    --focus-ring: 0 0 0 4px rgba(var(--accent-rgb), 0.18);
    --hero-background:
        radial-gradient(900px 360px at 50% 0%, rgba(var(--accent-rgb), 0.18), transparent 60%),
        radial-gradient(760px 320px at 20% 55%, rgba(var(--accent-2-rgb), 0.12), transparent 65%),
        linear-gradient(180deg, rgba(15, 23, 42, 0.02), transparent 50%),
        var(--bg);
    --featured-media-background:
        radial-gradient(520px 240px at 18% 22%, rgba(var(--accent-rgb), 0.25), transparent 60%),
        radial-gradient(480px 260px at 78% 65%, rgba(var(--accent-2-rgb), 0.18), transparent 62%),
        linear-gradient(135deg, rgba(255, 255, 255, 0.92) 0%, rgba(241, 245, 249, 0.96) 60%, rgba(255, 255, 255, 0.9) 100%);
    --footer-background: var(--surface-2);

    --primary-color: var(--accent);
    --secondary-color: #64748b;
    --background-color: var(--bg);
    --card-background: var(--card);
    --text-primary: var(--text);
    --text-secondary: #334155;
    --border-color: var(--border);
}

html {
    color-scheme: light;
}

html[data-theme="dark"] {
    color-scheme: dark;
    --bg: #0b1020;
    --surface: rgba(15, 23, 42, 0.52);
    --surface-2: rgba(15, 23, 42, 0.74);
    --card: rgba(15, 23, 42, 0.66);
    --text: #e5e7eb;
    --muted: rgba(226, 232, 240, 0.76);
    --border: rgba(148, 163, 184, 0.18);
    --border-strong: rgba(148, 163, 184, 0.26);
    --accent: #60a5fa;
    --accent-2: #34d399;
    --accent-rgb: 96, 165, 250;
    --accent-2-rgb: 52, 211, 153;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.32);
    --shadow-md: 0 16px 44px rgba(0, 0, 0, 0.48);
    --shadow-lg: 0 34px 92px rgba(0, 0, 0, 0.56);
    --focus-ring: 0 0 0 4px rgba(var(--accent-rgb), 0.28);
    --hero-background:
        radial-gradient(900px 360px at 50% 0%, rgba(var(--accent-rgb), 0.18), transparent 60%),
        radial-gradient(760px 320px at 16% 55%, rgba(var(--accent-2-rgb), 0.12), transparent 65%),
        linear-gradient(180deg, rgba(0, 0, 0, 0.18), transparent 52%),
        var(--bg);
    --featured-media-background:
        radial-gradient(520px 240px at 18% 22%, rgba(var(--accent-rgb), 0.18), transparent 60%),
        radial-gradient(480px 260px at 78% 65%, rgba(var(--accent-2-rgb), 0.12), transparent 62%),
        linear-gradient(135deg, rgba(15, 23, 42, 0.88) 0%, rgba(15, 23, 42, 0.72) 60%, rgba(15, 23, 42, 0.84) 100%);
    --footer-background: var(--surface-2);

    --secondary-color: rgba(226, 232, 240, 0.66);
    --text-secondary: rgba(226, 232, 240, 0.78);
}

body {
    font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.65;
    color: var(--text-primary);
    background-color: var(--background-color);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Header */
.header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition), box-shadow var(--transition), border-color var(--transition), backdrop-filter var(--transition);
    backdrop-filter: blur(14px);
}

.header.is-scrolled {
    background-color: var(--surface-2);
    box-shadow: var(--shadow-sm);
}

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

.logo h1 {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--muted);
    font-weight: 600;
    transition: color var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -0.25rem;
    left: 0;
    width: 0;
    height: 2px;
    background-color: currentColor;
    transition: width var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 0.375rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 999px;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    cursor: pointer;
    transition: transform var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition);
    margin-left: 0.5rem;
}

.theme-toggle:hover {
    background-color: var(--surface-2);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.theme-toggle__icon {
    display: block;
}

.theme-toggle__icon--sun {
    display: none;
}

html[data-theme="dark"] .theme-toggle__icon--sun {
    display: block;
}

html[data-theme="dark"] .theme-toggle__icon--moon {
    display: none;
}

.menu-toggle span {
    width: 1.5rem;
    height: 2px;
    background-color: var(--text-primary);
    transition: transform var(--transition), opacity var(--transition);
}

/* Hero Section */
.hero {
    padding: 7rem 0 5.5rem;
    text-align: center;
    background: var(--hero-background);
    color: var(--text-primary);
}

.hero-content {
    max-width: 760px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 3.25rem;
    font-weight: 850;
    margin-bottom: 1.5rem;
    line-height: 1.05;
    letter-spacing: -0.04em;
}

.hero p {
    font-size: 1.125rem;
    margin-bottom: 2.5rem;
    opacity: 1;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    color: var(--muted);
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.hero-highlights {
    margin-top: 2.5rem;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    text-align: left;
}

.hero-highlight {
    display: block;
    text-decoration: none;
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1rem 1.05rem;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background-color var(--transition);
    color: var(--text-primary);
}

.hero-highlight:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--border-color);
    background-color: var(--surface-2);
}

.hero-highlight__title {
    font-weight: 800;
    letter-spacing: -0.01em;
    margin-bottom: 0.25rem;
}

.hero-highlight__desc {
    color: var(--muted);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.1rem;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition), border-color var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--surface-2);
    transform: translateY(-2px);
}

.btn-link {
    color: var(--muted);
    padding: 0;
    font-weight: 500;
}

.btn-link:hover {
    color: var(--text-primary);
    text-decoration: underline;
    text-decoration-thickness: 2px;
    text-underline-offset: 0.22em;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

/* Sections */
section {
    padding: 6rem 0;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Products */
.products {
    background-color: var(--background-color);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: none;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    text-align: left;
}

.product-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-strong);
}

.product-icon {
    width: 3rem;
    height: 3rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    border-radius: calc(var(--radius) + 0.25rem);
    background-color: rgba(var(--accent-rgb), 0.08);
    border: 1px solid var(--border-color);
    margin-bottom: 1.25rem;
}

.product-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.product-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* Blog */
.blog {
    background: linear-gradient(180deg, var(--surface) 0%, transparent 72%);
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--secondary-color);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.blog-landing__header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 1.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.blog-landing__heading {
    max-width: 56ch;
}

.blog-landing__title {
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.15;
    margin: 0.5rem 0 0.75rem;
}

.blog-landing__subtitle {
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.7;
}

.blog-landing__actions {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.blog-landing__controls {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.blog-search {
    width: 100%;
    padding: 0.875rem 1rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background-color: var(--surface);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.blog-search::placeholder {
    color: var(--text-secondary);
    opacity: 0.75;
}

.blog-search:hover {
    box-shadow: var(--shadow-md);
}

.blog-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.blog-tag {
    border: 1px solid var(--border-color);
    background-color: var(--surface);
    color: var(--text-secondary);
    padding: 0.5rem 0.875rem;
    border-radius: 999px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.blog-tag:hover {
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.blog-tag.is-active {
    border-color: rgba(var(--accent-rgb), 0.35);
    background-color: rgba(var(--accent-rgb), 0.10);
    color: var(--text-primary);
}

.blog-landing__layout {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2rem;
    align-items: start;
}

.blog-featured {
    display: grid;
    grid-template-rows: auto 1fr;
    border-radius: calc(var(--radius) + 0.25rem);
    overflow: hidden;
    text-decoration: none;
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    box-shadow: none;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.blog-featured:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
    border-color: var(--border-strong);
}

.blog-featured__media {
    position: relative;
    aspect-ratio: 16 / 9;
    background: var(--featured-media-background);
}

.blog-featured__badge {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.5rem 0.75rem;
    border-radius: 999px;
    background-color: var(--surface-2);
    border: 1px solid var(--border-color);
    color: var(--muted);
    font-weight: 700;
    backdrop-filter: blur(10px);
}

.blog-featured__content {
    padding: 1.75rem;
}

.blog-meta {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    font-size: 0.875rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
    flex-wrap: wrap;
}

.blog-meta__dot {
    opacity: 0.6;
}

.blog-featured__title {
    font-size: 1.75rem;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.blog-featured__excerpt {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.75;
}

.blog-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 0.625rem;
    border-radius: 999px;
    border: 1px solid var(--border-color);
    background-color: var(--surface);
    color: var(--muted);
    font-weight: 600;
    font-size: 0.8125rem;
}

.blog-list {
    display: grid;
    gap: 1rem;
}

.blog-card {
    border-radius: calc(var(--radius) + 0.25rem);
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    box-shadow: none;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.blog-card:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
    border-color: var(--border-strong);
}

.blog-card__link {
    display: block;
    padding: 1.25rem 1.25rem 1.15rem;
    text-decoration: none;
}

.blog-card__title {
    margin: 0.25rem 0 0.5rem;
    color: var(--text-primary);
    font-size: 1.125rem;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.blog-card__excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0.875rem;
}

.blog-empty {
    padding: 1.5rem;
    border-radius: calc(var(--radius) + 0.25rem);
    border: 1px dashed var(--border-color);
    color: var(--text-secondary);
    text-align: center;
    background-color: var(--surface);
}

/* Tools */
.tools {
    background-color: var(--background-color);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.tool-card {
    background-color: var(--card-background);
    padding: 1.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
    box-shadow: none;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    border-left: 3px solid var(--primary-color);
}

.tool-card:hover {
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
    border-color: var(--border-color);
}

.tool-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.tool-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

/* Tutorials */
.tutorials {
    background-color: var(--card-background);
}

.tutorials-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.category-card {
    background-color: var(--background-color);
    padding: 2rem;
    border-radius: var(--radius);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    text-align: center;
    border: 1px solid var(--border-color);
}

.category-card:hover {
    border-color: var(--border-color);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}

.category-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.category-card p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

/* About */
.about {
    background-color: var(--background-color);
    text-align: center;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
}

.about-content p {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.about-actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 0.9rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background-color: var(--footer-background);
    color: var(--text-primary);
    padding: 1.75rem 0;
    border-top: 1px solid var(--border-color);
}

.footer-min {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    color: var(--muted);
    font-size: 0.875rem;
    flex-wrap: wrap;
}

.footer-min__right {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-min__social {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 999px;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition);
}

.footer-icon:hover {
    background-color: var(--surface-2);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

.footer-toplink {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 0.75rem;
    border-radius: 999px;
    background-color: var(--surface);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 650;
    letter-spacing: -0.01em;
    transition: transform var(--transition), box-shadow var(--transition), background-color var(--transition), border-color var(--transition);
}

.footer-toplink:hover {
    background-color: var(--surface-2);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 72px;
        left: 0;
        flex-direction: column;
        background-color: var(--surface-2);
        width: 100%;
        padding: 2rem;
        box-shadow: var(--shadow-md);
        transition: transform var(--transition), opacity var(--transition);
        transform: translateX(-100%);
        opacity: 0;
        pointer-events: none;
        gap: 1.5rem;
        border-bottom: 1px solid var(--border-color);
        backdrop-filter: blur(14px);
    }

    .nav-links.active {
        transform: translateX(0);
        opacity: 1;
        pointer-events: auto;
    }

    .menu-toggle {
        display: flex;
    }

    .hero h2 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    section {
        padding: 4rem 0;
    }

    .hero {
        padding: 5rem 0 4rem;
    }

    .hero-highlights {
        grid-template-columns: 1fr;
    }

    .section-header {
        justify-content: center;
    }

    .blog-landing__layout {
        grid-template-columns: 1fr;
    }

    .blog-featured__content {
        padding: 1.5rem;
    }

    .footer {
        padding: 1.5rem 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .products-grid,
    .tools-grid,
    .tutorials-categories {
        grid-template-columns: 1fr;
    }

    .blog-landing__title {
        font-size: 1.75rem;
    }

    .blog-featured__title {
        font-size: 1.35rem;
    }

    .blog-card__link {
        padding: 1.1rem;
    }

    .footer {
        padding: 1.25rem 0;
    }
}

/* Animation */
@media (prefers-reduced-motion: reduce) {
    * {
        scroll-behavior: auto;
    }

    .btn,
    .product-card,
    .tool-card,
    .category-card,
    .blog-featured,
    .blog-card {
        transition: none;
    }

    .nav-links a::after,
    .menu-toggle span {
        transition: none;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-color);
}

::-webkit-scrollbar-thumb {
    background: var(--secondary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}