@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

:root {
    --color-canvas: #f7f7f4;
    --color-canvas-soft: #fafaf7;
    --color-surface-card: #ffffff;
    --color-surface-strong: #e6e5e0;
    --color-primary: #f54e00;
    --color-primary-active: #d04200;
    --color-on-primary: #ffffff;
    --color-ink: #26251e;
    --color-body: #5a5852;
    --color-body-strong: #26251e;
    --color-muted: #807d72;
    --color-muted-soft: #a09c92;
    --color-hairline: #e6e5e0;
    --color-hairline-soft: #efeee8;
    --color-hairline-strong: #cfcdc4;
    --color-semantic-success: #1f8a65;
    --color-semantic-error: #cf2d56;
    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-pill: 9999px;
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-base: 16px;
    --spacing-md: 20px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 80px;
    --font-display: 'Inter', system-ui, "Helvetica Neue", Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-display);
    background-color: var(--color-canvas);
    color: var(--color-body);
    line-height: 1.5;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

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

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

nav.site-nav {
    background-color: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav.site-nav .nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

nav.site-nav .nav-logo {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--color-ink);
    white-space: nowrap;
}

nav.site-nav .nav-logo span {
    color: var(--color-primary);
}

nav.site-nav .nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    list-style: none;
}

nav.site-nav .nav-links a {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-body);
    transition: color 0.15s ease;
}

nav.site-nav .nav-links a:hover {
    color: var(--color-ink);
}

nav.site-nav .nav-cta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    font-size: 14px;
    font-weight: 500;
    line-height: 1.0;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    transition: background-color 0.15s ease;
}

.btn-primary:hover,
.btn-primary:active {
    background-color: var(--color-primary-active);
}

.btn-secondary {
    background-color: var(--color-surface-card);
    color: var(--color-ink);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: 1px solid var(--color-hairline-strong);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    transition: border-color 0.15s ease;
}

.btn-secondary:hover {
    border-color: var(--color-muted);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-hamburger span {
    width: 22px;
    height: 2px;
    background-color: var(--color-ink);
    display: block;
    border-radius: 2px;
}

.hero-band {
    padding: var(--spacing-section) 0;
    background-color: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
}

.hero-band h1 {
    font-size: 72px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -2.16px;
    color: var(--color-ink);
    max-width: 800px;
    margin-bottom: var(--spacing-lg);
}

.hero-band .hero-sub {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-body);
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
}

.hero-meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-xl);
}

.section {
    padding: var(--spacing-section) 0;
}

.section-label {
    font-size: 11px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-base);
}

.section-title {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}

.section-sub {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-body);
    max-width: 600px;
    margin-bottom: var(--spacing-xxl);
}

.subsection-title {
    font-size: 26px;
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-base);
}

.card-group-title {
    font-size: 22px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: -0.11px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
}

.card {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

.card-body {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-body);
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.article-card {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    transition: border-color 0.15s ease;
}

.article-card:hover {
    border-color: var(--color-hairline-strong);
}

.article-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-card-body {
    padding: var(--spacing-lg);
}

.article-card-meta {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xs);
}

.article-card-title {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

.article-card-excerpt {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: var(--spacing-base);
}

.article-card-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
}

.article-card-link:hover {
    color: var(--color-primary-active);
}

.article-hero {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    border-bottom: 1px solid var(--color-hairline);
}

.article-hero h1 {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--color-ink);
    max-width: 760px;
    margin-bottom: var(--spacing-md);
}

.article-hero .article-lead {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-body);
    max-width: 660px;
    margin-bottom: var(--spacing-lg);
}

.article-meta-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    font-size: 13px;
    color: var(--color-muted);
}

.article-content {
    padding: var(--spacing-xxl) 0;
    max-width: 760px;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    margin: var(--spacing-xxl) 0 var(--spacing-base);
}

.article-content h3 {
    font-size: 18px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.article-content p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: var(--spacing-base);
}

.article-content ul,
.article-content ol {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: var(--spacing-base);
    padding-left: var(--spacing-xl);
}

.article-content li {
    margin-bottom: var(--spacing-xs);
}

.article-content a {
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-hairline-strong);
}

.article-content a:hover {
    border-bottom-color: var(--color-ink);
}

.article-img {
    width: 100%;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
    margin: var(--spacing-xl) 0;
}

.article-img-caption {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: calc(-1 * var(--spacing-md));
    margin-bottom: var(--spacing-xl);
}

.info-box {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.info-box-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-sm);
}

code {
    font-family: var(--font-mono);
    font-size: 13px;
    background-color: var(--color-surface-strong);
    padding: 2px 6px;
    border-radius: var(--rounded-xs);
    color: var(--color-ink);
}

.code-block {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-md);
    overflow-x: auto;
    margin: var(--spacing-base) 0;
}

.code-block pre {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.5;
    color: var(--color-ink);
}

.badge {
    display: inline-flex;
    align-items: center;
    background-color: var(--color-surface-strong);
    color: var(--color-ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    border-radius: var(--rounded-pill);
    padding: 4px 10px;
}

.hairline {
    border: none;
    border-top: 1px solid var(--color-hairline);
}

.cta-band {
    background-color: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    padding: 96px 0;
    text-align: center;
}

.cta-band h2 {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-form-wrap {
    max-width: 560px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: var(--spacing-base);
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

.form-group input,
.form-group textarea {
    width: 100%;
    background-color: var(--color-surface-card);
    color: var(--color-ink);
    font-family: var(--font-display);
    font-size: 16px;
    border: 1px solid var(--color-hairline-strong);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    outline: none;
    transition: border-color 0.15s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-ink);
}

.form-group textarea {
    height: 120px;
    resize: vertical;
}

.form-message {
    display: none;
    font-size: 14px;
    color: var(--color-semantic-success);
    margin-top: var(--spacing-base);
    padding: var(--spacing-sm) var(--spacing-base);
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-md);
}

.form-message.visible {
    display: block;
}

footer.site-footer {
    background-color: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    padding: 64px 0 48px;
}

footer.site-footer .footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}

footer.site-footer .footer-brand {
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.5px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-base);
}

footer.site-footer .footer-brand span {
    color: var(--color-primary);
}

footer.site-footer .footer-desc {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-body);
}

footer.site-footer .footer-col-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-base);
}

footer.site-footer .footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

footer.site-footer .footer-links a {
    font-size: 14px;
    color: var(--color-body);
    transition: color 0.15s ease;
}

footer.site-footer .footer-links a:hover {
    color: var(--color-ink);
}

footer.site-footer .footer-bottom {
    border-top: 1px solid var(--color-hairline);
    padding-top: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--color-muted);
}

#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-surface-card);
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-base) 0;
    z-index: 200;
    display: none;
}

#cookie-banner.visible {
    display: block;
}

#cookie-banner .cookie-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

#cookie-banner p {
    font-size: 14px;
    color: var(--color-body);
    flex: 1;
}

#cookie-banner p a {
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-hairline-strong);
}

#cookie-banner .cookie-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.breadcrumb {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-base);
}

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

.breadcrumb a:hover {
    color: var(--color-ink);
}

.breadcrumb span {
    margin: 0 6px;
}

.page-content {
    padding: var(--spacing-section) 0;
    max-width: 760px;
}

.page-content h1 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xl);
}

.page-content h2 {
    font-size: 22px;
    font-weight: 400;
    letter-spacing: -0.11px;
    line-height: 1.3;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.page-content p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: var(--spacing-base);
}

.page-content ul {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-body);
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-base);
}

.page-content li {
    margin-bottom: var(--spacing-xs);
}

.page-content a {
    color: var(--color-ink);
    border-bottom: 1px solid var(--color-hairline-strong);
}

.page-meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xxl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 1px solid var(--color-hairline);
}

@media (max-width: 1024px) {
    .hero-band h1 {
        font-size: 56px;
        letter-spacing: -1.5px;
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

@media (max-width: 768px) {
    nav.site-nav .nav-links {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background-color: var(--color-canvas);
        border-bottom: 1px solid var(--color-hairline);
        flex-direction: column;
        padding: var(--spacing-base) var(--spacing-xl);
        gap: var(--spacing-base);
    }

    nav.site-nav .nav-links.open {
        display: flex;
    }

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

    nav.site-nav .nav-hamburger {
        display: flex;
    }

    .nav-inner {
        position: relative;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 var(--spacing-base);
    }

    .hero-band h1 {
        font-size: 32px;
        letter-spacing: -0.5px;
    }

    .section-title {
        font-size: 26px;
    }

    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }

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

    footer.site-footer .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        text-align: center;
    }

    #cookie-banner .cookie-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .article-hero h1 {
        font-size: 26px;
        letter-spacing: -0.325px;
    }

    .cta-band h2 {
        font-size: 26px;
    }
}