:root {
    --c-primary: #3858E9;
    --c-primary-hover: #1D35B4;
    --c-primary-light: rgba(56, 88, 233, 0.08);
    --c-bg: #FFFFFF;
    --c-bg-alt: #F0F0F0;
    --c-text: #1E1E1E;
    --c-text-secondary: #757575;
    --c-border: #E0E0E0;
    --c-code-bg: #1E1E1E;
    --c-code-text: #D4D4D4;

    --tk-k: #C586C0;
    --tk-fn: #DCDCAA;
    --tk-s: #CE9178;
    --tk-v: #9CDCFE;
    --tk-n: #B5CEA8;
    --tk-c: #6A9955;
    --tk-t: #569CD6;
    --tk-a: #92C5F7;
    --tk-p: #808080;

    --f-base: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
    --f-code: 'JetBrains Mono', 'SF Mono', Monaco, Consolas, monospace;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 100px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);

    --max-w: 1100px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--f-base);
    color: var(--c-text);
    background: var(--c-bg);
    line-height: 1.65;
}

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

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


/* --------------------------------
   Layout
   -------------------------------- */

.wrap {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.5rem;
}


/* --------------------------------
   Nav
   -------------------------------- */

.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--c-border);
}

.nav .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 3.5rem;
}

.nav__logo {
    font-weight: 600;
    font-size: 0.9375rem;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav__logo svg {
    width: 1.25rem;
    height: 1.25rem;
    color: var(--c-primary);
}

.nav__links {
    display: flex;
    gap: 1.25rem;
    align-items: center;
    list-style: none;
}

.nav__link {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--c-text-secondary);
    transition: color 0.15s;
}

.nav__link:hover {
    color: var(--c-text);
}

.nav__link--github {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    color: var(--c-text);
}

.nav__link--github svg {
    width: 1.125rem;
    height: 1.125rem;
}


/* --------------------------------
   Buttons
   -------------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--f-base);
    font-weight: 500;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    padding: 0.625rem 1.25rem;
    text-decoration: none;
    transition: all 0.15s;
    cursor: pointer;
    border: none;
}

.btn--primary {
    background: var(--c-primary);
    color: #FFFFFF;
}

.btn--primary:hover {
    background: var(--c-primary-hover);
}

.btn--primary svg {
    width: 1rem;
    height: 1rem;
}


/* --------------------------------
   Hero
   -------------------------------- */

.hero {
    background: linear-gradient(180deg, #F0F4FF 0%, var(--c-bg) 100%);
    padding: 5rem 0 4.5rem;
}

.hero__label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--c-primary);
    margin-bottom: 1.25rem;
}

.hero__title {
    font-size: clamp(2.5rem, 7vw, 4rem);
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
}

.hero__lead {
    font-size: clamp(1.0625rem, 2vw, 1.25rem);
    color: var(--c-text-secondary);
    line-height: 1.55;
    max-width: 36rem;
    margin-bottom: 2rem;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.hero__install {
    display: inline-flex;
    align-items: center;
    background: var(--c-code-bg);
    border-radius: var(--radius-md);
    padding: 0.625rem 1rem;
    font-family: var(--f-code);
    font-size: 0.8125rem;
    color: var(--c-code-text);
    gap: 0.625rem;
    max-width: 100%;
    overflow-x: auto;
}

.hero__install .prompt {
    color: var(--tk-p);
    user-select: none;
}


/* --------------------------------
   Sections
   -------------------------------- */

.section {
    padding: 5rem 0;
}

.section--alt {
    background: var(--c-bg-alt);
}

.section__head {
    margin-bottom: 2.5rem;
}

.section__num {
    display: inline-block;
    font-family: var(--f-code);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--c-primary);
    background: var(--c-primary-light);
    padding: 0.2rem 0.625rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.875rem;
}

.section__title {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 0.625rem;
}

.section__desc {
    color: var(--c-text-secondary);
    font-size: 1rem;
    max-width: 40rem;
}


/* --------------------------------
   Code blocks
   -------------------------------- */

.code-block {
    background: var(--c-code-bg);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.code-block__label {
    display: block;
    padding: 0.625rem 1.25rem 0;
    font-family: var(--f-code);
    font-size: 0.6875rem;
    color: var(--tk-p);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.code-block pre {
    margin: 0;
    padding: 0.875rem 1.25rem 1.25rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.code-block code {
    font-family: var(--f-code);
    font-size: 0.8125rem;
    line-height: 1.75;
    color: var(--c-code-text);
}

.code-block .k  { color: var(--tk-k); }
.code-block .fn { color: var(--tk-fn); }
.code-block .s  { color: var(--tk-s); }
.code-block .v  { color: var(--tk-v); }
.code-block .n  { color: var(--tk-n); }
.code-block .c  { color: var(--tk-c); }
.code-block .t  { color: var(--tk-t); }
.code-block .a  { color: var(--tk-a); }
.code-block .p  { color: var(--tk-p); }


/* --------------------------------
   Example grid
   -------------------------------- */

.example-grid {
    display: grid;
    gap: 1.25rem;
}


/* --------------------------------
   Features
   -------------------------------- */

.features-grid {
    display: grid;
    gap: 1.25rem;
}

.feature {
    background: var(--c-bg);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    transition: box-shadow 0.2s;
}

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

.feature__title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
}

.feature__text {
    color: var(--c-text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}


/* --------------------------------
   Field types
   -------------------------------- */

.types-grid {
    display: grid;
    gap: 2rem;
}

.type-group__title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--c-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 0.625rem;
}

.type-group__list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.type-tag {
    display: inline-block;
    font-family: var(--f-code);
    font-size: 0.75rem;
    background: var(--c-primary-light);
    color: var(--c-primary);
    border-radius: var(--radius-pill);
    padding: 0.25rem 0.75rem;
}


/* --------------------------------
   Conditions
   -------------------------------- */

.conditions-list {
    display: grid;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.condition-row {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    font-size: 0.875rem;
}

.condition-row code {
    font-family: var(--f-code);
    font-size: 0.8125rem;
    background: var(--c-code-bg);
    color: var(--c-code-text);
    padding: 0.25rem 0.625rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.condition-row span {
    color: var(--c-text-secondary);
    font-size: 0.8125rem;
}


/* --------------------------------
   Footer
   -------------------------------- */

.footer {
    background: var(--c-code-bg);
    color: #999;
    padding: 2.5rem 0;
}

.footer .wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem 1.25rem;
    align-items: center;
    font-size: 0.8125rem;
}

.footer a {
    color: #CCC;
    transition: color 0.15s;
}

.footer a:hover {
    color: #FFF;
}

.footer__sep {
    color: #444;
}


/* --------------------------------
   Responsive
   -------------------------------- */

@media (min-width: 768px) {
    .example-grid {
        grid-template-columns: 1fr 1fr;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .types-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .hero {
        padding: 6rem 0 5.5rem;
    }

    .section {
        padding: 5.5rem 0;
    }

    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .types-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}