@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Inter+Display:wght@400;475;500&display=swap');

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

:root {
    --color-primary: #181d26;
    --color-primary-active: #0d1218;
    --color-canvas: #ffffff;
    --color-surface-soft: #f8fafc;
    --color-surface-strong: #e0e2e6;
    --color-surface-dark: #181d26;
    --color-ink: #181d26;
    --color-body: #333840;
    --color-muted: #41454d;
    --color-on-primary: #ffffff;
    --color-hairline: #dddddd;
    --color-link: #1b61c9;
    --color-signature-coral: #aa2d00;
    --color-signature-forest: #0a2e0e;
    --color-signature-cream: #f5e9d4;
    --color-signature-peach: #fcab79;
    --color-signature-mint: #a8d8c4;
    --color-border-strong: #9297a0;
    --rounded-xs: 2px;
    --rounded-sm: 6px;
    --rounded-md: 10px;
    --rounded-lg: 12px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 96px;
    --max-width: 1280px;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, sans-serif;
    --font-display: 'Inter Display', 'Inter', -apple-system, sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.25;
    color: var(--color-body);
    background: var(--color-canvas);
}

a { color: var(--color-link); text-decoration: none; }
a:active { color: #1a3866; }
img { max-width: 100%; height: auto; display: block; }
address { font-style: normal; }

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

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

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xxl);
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-logo span { color: var(--color-muted); }

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin-left: auto;
}

.nav-menu a {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-body);
    text-decoration: none;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.15s, color 0.15s;
}
.nav-menu a.active,
.nav-menu a:active { color: var(--color-ink); border-bottom-color: var(--color-ink); }

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    cursor: pointer;
    color: var(--color-ink);
    margin-left: auto;
    padding: 8px;
}

.btn-primary {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-on-primary);
    font-family: var(--font-main);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    padding: 16px 24px;
    border-radius: var(--rounded-lg);
    border: none;
    cursor: pointer;
    text-decoration: none;
}
.btn-primary:active { background: var(--color-primary-active); color: var(--color-on-primary); }

.btn-secondary {
    display: inline-block;
    background: var(--color-canvas);
    color: var(--color-ink);
    font-family: var(--font-main);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    padding: 16px 24px;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
    cursor: pointer;
    text-decoration: none;
}

.btn-secondary-on-dark {
    display: inline-block;
    background: var(--color-canvas);
    color: var(--color-ink);
    font-family: var(--font-main);
    font-size: 16px;
    font-weight: 500;
    padding: 16px 24px;
    border-radius: var(--rounded-lg);
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.btn-legal {
    display: inline-block;
    background: var(--color-link);
    color: var(--color-on-primary);
    font-size: 13.12px;
    font-weight: 600;
    padding: 12px 10px;
    border-radius: var(--rounded-xs);
    border: none;
    cursor: pointer;
    text-decoration: none;
    white-space: nowrap;
}
.btn-legal--outline {
    background: transparent;
    color: var(--color-link);
    border: 1px solid var(--color-link);
}

.text-input {
    width: 100%;
    background: var(--color-canvas);
    color: var(--color-ink);
    font-family: var(--font-main);
    font-size: 14px;
    font-weight: 400;
    padding: 12px 16px;
    height: 44px;
    border-radius: var(--rounded-sm);
    border: 1px solid var(--color-hairline);
    outline: none;
}
.text-input:focus { border-color: #458fff; box-shadow: 0 0 0 2px rgba(69,143,255,0.2); }

.hero-band {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}
.hero-band h1 {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    max-width: 700px;
}
.hero-band .hero-sub {
    font-size: 16px;
    font-weight: 400;
    color: var(--color-body);
    margin-top: var(--spacing-lg);
    max-width: 560px;
    line-height: 1.5;
}
.hero-btn-row {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
    align-items: center;
}
.hero-meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-md);
}

.signature-coral {
    background: var(--color-signature-coral);
    color: var(--color-on-primary);
    padding: var(--spacing-section) 0;
}
.signature-coral h2 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-on-primary);
    max-width: 600px;
}
.signature-coral p {
    color: rgba(255,255,255,0.85);
    margin-top: var(--spacing-md);
    max-width: 520px;
    line-height: 1.5;
}
.sig-inner {
    padding: var(--spacing-xxl);
}

.signature-forest {
    background: var(--color-signature-forest);
    color: var(--color-on-primary);
    padding: var(--spacing-section) 0;
}
.signature-forest h2 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 400;
    color: var(--color-on-primary);
    max-width: 600px;
}
.signature-forest p {
    color: rgba(255,255,255,0.80);
    margin-top: var(--spacing-md);
    max-width: 520px;
    line-height: 1.5;
}

.surface-dark-band {
    background: var(--color-surface-dark);
    color: var(--color-on-primary);
    padding: var(--spacing-section) 0;
}
.surface-dark-band h2 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 400;
    color: var(--color-on-primary);
}
.surface-dark-band p {
    color: rgba(255,255,255,0.8);
    margin-top: var(--spacing-md);
    line-height: 1.5;
    max-width: 560px;
}

.cream-callout {
    background: var(--color-signature-cream);
    padding: var(--spacing-section) 0;
}
.cream-callout h2 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
}
.cream-callout p {
    color: var(--color-body);
    margin-top: var(--spacing-md);
    line-height: 1.5;
    max-width: 600px;
}

.section-white { padding: var(--spacing-section) 0; background: var(--color-canvas); }
.section-soft { padding: var(--spacing-section) 0; background: var(--color-surface-soft); }

.section-heading {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xl);
}
.section-sub {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.5;
    margin-bottom: var(--spacing-xl);
    max-width: 580px;
}

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

.article-card {
    background: var(--color-canvas);
    border-radius: var(--rounded-md);
    border: 1px solid var(--color-hairline);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}
.article-card img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: var(--rounded-sm);
}
.article-card .card-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
}
.article-card h3 {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-ink);
}
.article-card p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
    flex: 1;
}
.article-card .card-meta {
    font-size: 13px;
    color: var(--color-muted);
}
.article-card a.card-link {
    color: var(--color-ink);
    text-decoration: none;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}
.demo-card {
    border-radius: var(--rounded-md);
    padding: var(--spacing-md);
}
.demo-card img {
    width: 100%;
    border-radius: var(--rounded-sm);
    object-fit: cover;
}
.demo-card h4 {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-ink);
    margin-top: var(--spacing-sm);
}
.demo-card p { font-size: 14px; color: var(--color-body); margin-top: 6px; line-height: 1.5; }
.demo-card--peach  { background: var(--color-signature-peach); }
.demo-card--mint   { background: var(--color-signature-mint); }
.demo-card--cream  { background: var(--color-signature-cream); }

.cta-band-light {
    background: var(--color-surface-strong);
    padding: var(--spacing-xxl) var(--spacing-xxl);
    border-radius: var(--rounded-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin: 0 auto var(--spacing-section);
    max-width: var(--max-width);
}
.cta-band-light h2 {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    max-width: 560px;
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}
.contact-form .full-width { grid-column: 1 / -1; }
.contact-form label { display: block; font-size: 14px; font-weight: 500; color: var(--color-ink); margin-bottom: 6px; }

.article-hero { padding: var(--spacing-section) 0; background: var(--color-canvas); }
.article-hero h1 {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    max-width: 740px;
}
.article-hero .article-meta { font-size: 14px; color: var(--color-muted); margin-top: var(--spacing-md); }

.article-body {
    max-width: 740px;
    padding-bottom: var(--spacing-section);
}
.article-body h2 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    line-height: 1.35;
    letter-spacing: 0.12px;
}
.article-body h3 {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 400;
    color: var(--color-ink);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}
.article-body p { font-size: 14px; color: var(--color-body); line-height: 1.65; margin-bottom: var(--spacing-md); }
.article-body img {
    width: 100%;
    border-radius: var(--rounded-md);
    margin: var(--spacing-xl) 0;
}
.article-body figcaption {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: -12px;
    margin-bottom: var(--spacing-xl);
}
.article-body a { color: var(--color-link); }
.article-body ul { padding-left: var(--spacing-lg); margin-bottom: var(--spacing-md); }
.article-body li { font-size: 14px; color: var(--color-body); line-height: 1.65; margin-bottom: 6px; }

.page-hero { padding: var(--spacing-section) 0; background: var(--color-canvas); }
.page-hero h1 {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.2;
}
.page-hero p { font-size: 16px; color: var(--color-body); margin-top: var(--spacing-lg); max-width: 560px; line-height: 1.5; }

.page-body {
    max-width: 740px;
    padding-bottom: var(--spacing-section);
}
.page-body h2 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}
.page-body p { font-size: 14px; color: var(--color-body); line-height: 1.65; margin-bottom: var(--spacing-md); }
.page-body ul { padding-left: var(--spacing-lg); margin-bottom: var(--spacing-md); }
.page-body li { font-size: 14px; color: var(--color-body); line-height: 1.65; margin-bottom: 6px; }
.page-body a { color: var(--color-link); }

.site-footer {
    background: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-section) 0 0;
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xxl);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}
.footer-logo {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 500;
    color: var(--color-ink);
    display: block;
    margin-bottom: var(--spacing-md);
}
.footer-logo span { color: var(--color-muted); }
.footer-col p { font-size: 14px; color: var(--color-muted); line-height: 1.65; margin-top: 0; }
.footer-col h4 { font-size: 14px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-md); }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { font-size: 14px; color: var(--color-muted); text-decoration: none; }
.footer-col address p { margin-bottom: 6px; }
.footer-col address a { color: var(--color-muted); }
.footer-bottom {
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-xl) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}
.footer-bottom p { font-size: 13px; color: var(--color-muted); }
.footer-bottom nav { display: flex; gap: var(--spacing-md); }
.footer-bottom nav a { font-size: 13px; color: var(--color-muted); }

.cookie-banner {
    position: fixed;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--color-ink);
    color: var(--color-on-primary);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    display: none;
    z-index: 999;
}
.cookie-banner.visible { display: block; }
.cookie-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    justify-content: space-between;
}
.cookie-inner p { font-size: 14px; color: rgba(255,255,255,0.88); line-height: 1.5; flex: 1; min-width: 200px; }
.cookie-inner a { color: rgba(255,255,255,0.88); text-decoration: underline; }
.cookie-actions { display: flex; gap: var(--spacing-sm); flex-shrink: 0; }

.breadcrumb { font-size: 13px; color: var(--color-muted); margin-bottom: var(--spacing-xl); }
.breadcrumb a { color: var(--color-muted); }
.breadcrumb span { margin: 0 6px; }

.related-articles { padding: var(--spacing-section) 0; background: var(--color-surface-soft); }
.related-articles h2 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xl);
}

@media (max-width: 1024px) {
    .card-grid, .demo-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-form { grid-template-columns: 1fr; }
    .contact-form .full-width { grid-column: 1; }
}

@media (max-width: 767px) {
    :root { --spacing-section: 64px; }
    .container { padding: 0 var(--spacing-md); }
    .nav-inner { padding: 0 var(--spacing-md); }
    .nav-menu { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline); padding: var(--spacing-md); gap: 0; }
    .nav-menu.open { display: flex; }
    .nav-menu a { padding: 12px 0; display: block; border-bottom: 1px solid var(--color-hairline); }
    .nav-toggle { display: block; }
    .hero-band h1, .article-hero h1, .page-hero h1 { font-size: 28px; }
    .section-heading { font-size: 24px; }
    .card-grid, .demo-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-inner { padding: 0 var(--spacing-md); }
    .cta-band-light { margin: 0 var(--spacing-md) var(--spacing-section); padding: var(--spacing-xl) var(--spacing-lg); }
    .cta-band-light h2 { font-size: 24px; }
    .sig-inner { padding: var(--spacing-xl) var(--spacing-md); }
    .signature-coral h2, .signature-forest h2, .surface-dark-band h2 { font-size: 24px; }
    .cookie-banner { left: var(--spacing-sm); right: var(--spacing-sm); bottom: var(--spacing-sm); }
    .cookie-inner { flex-direction: column; align-items: flex-start; }
}