*, *::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-hairline: #dddddd;
    --color-on-primary: #ffffff;
    --color-link: #1b61c9;
    --color-link-active: #1a3866;
    --color-signature-coral: #aa2d00;
    --color-signature-forest: #0a2e0e;
    --color-signature-cream: #f5e9d4;
    --color-signature-peach: #fcab79;
    --color-signature-mint: #a8d8c4;
    --rounded-xs: 2px;
    --rounded-sm: 6px;
    --rounded-md: 10px;
    --rounded-lg: 12px;
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 96px;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    --max-width: 1280px;
}

html { font-size: 16px; 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:hover { color: var(--color-link-active); }

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

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

.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;
}

/* TOP NAV */
.top-nav {
    position: sticky; top: 0; z-index: 100;
    height: 64px;
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    display: flex; align-items: center;
}
.top-nav .container {
    display: flex; align-items: center; justify-content: space-between;
    width: 100%;
}
.nav-logo {
    font-size: 18px; font-weight: 500;
    color: var(--color-ink); text-decoration: none;
    white-space: nowrap;
}
.nav-links {
    display: flex; align-items: center; gap: var(--spacing-xl);
    list-style: none;
}
.nav-links a {
    font-size: 14px; font-weight: 400;
    color: var(--color-body); text-decoration: none;
}
.nav-links a:hover { color: var(--color-ink); }
.nav-right {
    display: flex; align-items: center; gap: var(--spacing-md);
}
.nav-hamburger {
    display: none; background: none; border: none;
    cursor: pointer; padding: var(--spacing-xs);
    flex-direction: column; gap: 5px;
}
.nav-hamburger span {
    display: block; width: 22px; height: 2px;
    background: var(--color-ink); border-radius: 2px;
}

/* BUTTONS */
.btn-primary {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--color-primary); color: var(--color-on-primary);
    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;
    transition: background 0.15s ease;
}
.btn-primary:active, .btn-primary:hover { background: var(--color-primary-active); color: var(--color-on-primary); }

.btn-secondary {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--color-canvas); color: var(--color-ink);
    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; transition: border-color 0.15s ease;
}
.btn-secondary:hover { border-color: var(--color-ink); color: var(--color-ink); }

.btn-secondary-on-dark {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--color-canvas); color: var(--color-ink);
    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-secondary-on-dark:hover { color: var(--color-ink); opacity: 0.9; }

.btn-legal {
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--color-link); color: var(--color-on-primary);
    font-size: 13.12px; font-weight: 600; line-height: 1.2;
    padding: 12px 10px; border-radius: var(--rounded-xs);
    border: none; cursor: pointer; text-decoration: none;
}
.btn-legal-outline {
    display: inline-flex; align-items: center; justify-content: center;
    background: transparent; color: var(--color-body);
    font-size: 13.12px; font-weight: 600; line-height: 1.2;
    padding: 12px 10px; border-radius: var(--rounded-xs);
    border: 1px solid var(--color-hairline); cursor: pointer; text-decoration: none;
}

/* HERO BAND */
.hero-band {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}
.hero-band h1 {
    font-size: 40px; font-weight: 400; line-height: 1.2;
    color: var(--color-ink); max-width: 700px;
    margin-bottom: var(--spacing-lg);
}
.hero-band p {
    font-size: 18px; font-weight: 400; line-height: 1.5;
    color: var(--color-body); max-width: 560px;
    margin-bottom: var(--spacing-xl);
}
.hero-ctas { display: flex; gap: var(--spacing-md); flex-wrap: wrap; }

/* SIGNATURE CARDS */
.signature-coral {
    background: var(--color-signature-coral);
    padding: var(--spacing-section) 0;
    color: var(--color-on-primary);
}
.signature-coral h2 {
    font-size: 32px; font-weight: 400; line-height: 1.2;
    color: var(--color-on-primary); max-width: 600px;
    margin-bottom: var(--spacing-lg);
}
.signature-coral p {
    font-size: 14px; line-height: 1.5;
    color: var(--color-on-primary); max-width: 520px;
    margin-bottom: var(--spacing-xl);
}
.signature-forest {
    background: var(--color-signature-forest);
    padding: var(--spacing-section) 0;
    color: var(--color-on-primary);
}
.signature-forest h2 {
    font-size: 32px; font-weight: 400; line-height: 1.2;
    color: var(--color-on-primary); max-width: 600px;
    margin-bottom: var(--spacing-lg);
}
.signature-forest p {
    font-size: 14px; line-height: 1.5;
    color: var(--color-on-primary); max-width: 520px;
    margin-bottom: var(--spacing-xl);
}
.signature-dark {
    background: var(--color-surface-dark);
    padding: var(--spacing-section) 0;
    color: var(--color-on-primary);
}
.signature-dark h2 {
    font-size: 32px; font-weight: 400; line-height: 1.2;
    color: var(--color-on-primary); max-width: 640px;
    margin-bottom: var(--spacing-lg);
}
.signature-dark p {
    font-size: 14px; line-height: 1.5;
    color: rgba(255,255,255,0.8); max-width: 540px;
    margin-bottom: var(--spacing-xl);
}
.cream-callout {
    background: var(--color-signature-cream);
    padding: var(--spacing-section) 0;
}
.cream-callout h2 {
    font-size: 32px; font-weight: 400; line-height: 1.2;
    color: var(--color-ink); max-width: 640px;
    margin-bottom: var(--spacing-md);
}
.cream-callout p {
    font-size: 14px; line-height: 1.5;
    color: var(--color-body); max-width: 520px;
    margin-bottom: var(--spacing-xl);
}

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

.section-title {
    font-size: 24px; font-weight: 400; line-height: 1.35;
    letter-spacing: 0.12px; color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}
.section-sub {
    font-size: 14px; color: var(--color-body);
    line-height: 1.5; margin-bottom: var(--spacing-xl);
    max-width: 560px;
}

/* ARTICLE CARDS GRID */
.article-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}
.article-card {
    background: var(--color-canvas);
    border-radius: var(--rounded-md);
    overflow: hidden;
    border: 1px solid var(--color-hairline);
}
.article-card img {
    width: 100%; aspect-ratio: 16/9; object-fit: cover;
}
.article-card-body { padding: var(--spacing-md); }
.article-card-tag {
    font-size: 11px; font-weight: 500; letter-spacing: 0.8px;
    text-transform: uppercase; color: var(--color-muted);
    margin-bottom: var(--spacing-xs);
}
.article-card-title {
    font-size: 18px; font-weight: 500; line-height: 1.4;
    color: var(--color-ink); margin-bottom: var(--spacing-xs);
    text-decoration: none; display: block;
}
.article-card-title:hover { color: var(--color-link); }
.article-card-meta {
    font-size: 13px; color: var(--color-muted);
    line-height: 1.35;
}
.article-card-excerpt {
    font-size: 14px; color: var(--color-body);
    line-height: 1.5; margin-top: var(--spacing-xs);
}

/* DEMO GRID CARDS */
.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);
    overflow: hidden;
}
.demo-card img {
    width: 100%; border-radius: var(--rounded-sm);
    aspect-ratio: 4/3; object-fit: cover;
    margin-bottom: var(--spacing-sm);
}
.demo-card-title {
    font-size: 16px; font-weight: 500; line-height: 1.4;
    color: var(--color-ink); margin-bottom: var(--spacing-xs);
}
.demo-card-text {
    font-size: 14px; color: var(--color-body); 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 */
.cta-band-light {
    background: var(--color-surface-strong);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    text-align: center;
    margin: 0 var(--spacing-xxl);
}
.cta-band-light h2 {
    font-size: 32px; font-weight: 400; line-height: 1.2;
    color: var(--color-ink); margin-bottom: var(--spacing-md);
}
.cta-band-light p {
    font-size: 14px; color: var(--color-body);
    margin-bottom: var(--spacing-xl);
}
.cta-band-wrapper { padding: var(--spacing-section) 0; background: var(--color-canvas); }

/* ARTICLE PAGE */
.article-hero {
    padding: var(--spacing-section) 0 var(--spacing-xl);
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
}
.article-hero .breadcrumb {
    font-size: 14px; color: var(--color-muted);
    margin-bottom: var(--spacing-md);
}
.article-hero .breadcrumb a { color: var(--color-muted); }
.article-hero .breadcrumb a:hover { color: var(--color-link); }
.article-hero h1 {
    font-size: 40px; font-weight: 400; line-height: 1.2;
    color: var(--color-ink); max-width: 800px;
    margin-bottom: var(--spacing-md);
}
.article-hero-meta {
    font-size: 14px; color: var(--color-muted); line-height: 1.5;
}
.article-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--spacing-xxl);
    padding: var(--spacing-section) 0;
}
.article-body { min-width: 0; }
.article-body h2 {
    font-size: 24px; font-weight: 400; line-height: 1.35;
    color: var(--color-ink); margin: var(--spacing-xl) 0 var(--spacing-md);
}
.article-body h3 {
    font-size: 18px; font-weight: 500; line-height: 1.4;
    color: var(--color-ink); margin: var(--spacing-lg) 0 var(--spacing-sm);
}
.article-body p {
    font-size: 14px; line-height: 1.7;
    color: var(--color-body); margin-bottom: var(--spacing-md);
}
.article-body ul, .article-body ol {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}
.article-body li {
    font-size: 14px; line-height: 1.7;
    color: var(--color-body); margin-bottom: var(--spacing-xs);
}
.article-body a { color: var(--color-link); }
.article-body a:hover { color: var(--color-link-active); }
.article-body img {
    width: 100%; border-radius: var(--rounded-md);
    margin: var(--spacing-xl) 0; aspect-ratio: 16/9; object-fit: cover;
}
.article-sidebar {
    position: sticky; top: 80px; align-self: start;
}
.sidebar-card {
    background: var(--color-surface-soft);
    border-radius: var(--rounded-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--color-hairline);
}
.sidebar-card h3 {
    font-size: 16px; font-weight: 500; line-height: 1.4;
    color: var(--color-ink); margin-bottom: var(--spacing-md);
}
.sidebar-card ul { list-style: none; }
.sidebar-card li { margin-bottom: var(--spacing-sm); }
.sidebar-card li a {
    font-size: 14px; color: var(--color-link); line-height: 1.5;
}
.sidebar-card li a:hover { color: var(--color-link-active); }

/* CONTACT FORM */
.contact-form-section { padding: var(--spacing-section) 0; }
.form-wrap {
    max-width: 560px;
}
.form-group { margin-bottom: var(--spacing-md); }
.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, .form-group select {
    width: 100%; background: var(--color-canvas);
    color: var(--color-ink); font-size: 14px; font-family: var(--font-main);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-sm);
    padding: 12px 16px; height: 44px; outline: none;
    transition: border-color 0.15s ease;
}
.form-group input:focus, .form-group textarea:focus {
    border-color: #458fff;
}
.form-group textarea { height: auto; min-height: 120px; resize: vertical; }

/* PAGES */
.page-hero {
    padding: var(--spacing-section) 0 var(--spacing-xl);
    border-bottom: 1px solid var(--color-hairline);
}
.page-hero h1 {
    font-size: 40px; font-weight: 400; line-height: 1.2; color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}
.page-hero p { font-size: 14px; color: var(--color-body); line-height: 1.7; max-width: 560px; }
.page-content { padding: var(--spacing-section) 0; }
.page-content h2 {
    font-size: 24px; font-weight: 400; color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}
.page-content h3 {
    font-size: 18px; font-weight: 500; color: var(--color-ink);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
}
.page-content p {
    font-size: 14px; line-height: 1.7; color: var(--color-body);
    margin-bottom: var(--spacing-md); max-width: 740px;
}
.page-content ul, .page-content ol {
    padding-left: var(--spacing-lg); margin-bottom: var(--spacing-md);
}
.page-content li {
    font-size: 14px; line-height: 1.7; color: var(--color-body);
    margin-bottom: var(--spacing-xs);
}

/* CONTACT INFO */
.contact-info-grid {
    display: grid; grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg); margin-bottom: var(--spacing-section);
}
.contact-info-card {
    background: var(--color-surface-soft);
    border-radius: var(--rounded-md);
    padding: var(--spacing-xl);
    border: 1px solid var(--color-hairline);
}
.contact-info-card h3 {
    font-size: 16px; font-weight: 500; color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
}
.contact-info-card p, .contact-info-card a {
    font-size: 14px; color: var(--color-body); line-height: 1.7;
}

/* FOOTER */
footer {
    background: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-section) 0 var(--spacing-xl);
}
.footer-grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: var(--spacing-xl); margin-bottom: var(--spacing-xxl);
}
.footer-brand p {
    font-size: 14px; color: var(--color-muted);
    line-height: 1.7; max-width: 280px; margin-top: var(--spacing-sm);
}
.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: var(--spacing-xs); }
.footer-col a {
    font-size: 14px; color: var(--color-muted);
}
.footer-col a:hover { color: var(--color-ink); }
.footer-bottom {
    border-top: 1px solid var(--color-hairline);
    padding-top: var(--spacing-lg);
    display: flex; justify-content: space-between; align-items: center;
    flex-wrap: wrap; gap: var(--spacing-md);
}
.footer-bottom p, .footer-bottom a {
    font-size: 14px; color: var(--color-muted);
}

/* COOKIE BANNER */
#cookie-banner {
    position: fixed; bottom: 0; left: 0; right: 0; z-index: 9999;
    background: var(--color-surface-dark); color: var(--color-on-primary);
    padding: var(--spacing-lg) var(--spacing-xxl);
    display: flex; align-items: center; justify-content: space-between;
    gap: var(--spacing-lg); flex-wrap: wrap;
}
#cookie-banner p {
    font-size: 13.12px; color: rgba(255,255,255,0.85);
    line-height: 1.5; flex: 1; min-width: 200px;
}
#cookie-banner a { color: rgba(255,255,255,0.85); text-decoration: underline; }
.cookie-btns { display: flex; gap: var(--spacing-xs); flex-wrap: wrap; }

/* DISCLAIMER */
.disclaimer-bar {
    background: var(--color-surface-soft);
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-md) 0;
    text-align: center;
    font-size: 13px; color: var(--color-muted); line-height: 1.5;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .article-grid { grid-template-columns: 1fr 1fr; }
    .demo-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .contact-info-grid { grid-template-columns: 1fr 1fr; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
}

@media (max-width: 768px) {
    :root { --spacing-section: 64px; }
    .container { padding: 0 var(--spacing-md); }
    .nav-links { display: none; flex-direction: column; position: fixed;
        top: 64px; left: 0; right: 0; background: var(--color-canvas);
        padding: var(--spacing-lg); border-bottom: 1px solid var(--color-hairline);
        z-index: 99; }
    .nav-links.open { display: flex; }
    .nav-right .btn-primary { display: none; }
    .nav-hamburger { display: flex; }
    .hero-band h1 { font-size: 28px; }
    .signature-coral h2, .signature-forest h2, .signature-dark h2,
    .cream-callout h2 { font-size: 24px; }
    .article-grid { grid-template-columns: 1fr; }
    .demo-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .contact-info-grid { grid-template-columns: 1fr; }
    .cta-band-light { margin: 0 var(--spacing-md); }
    .article-hero h1 { font-size: 28px; }
    #cookie-banner { padding: var(--spacing-md); }
}