*, *::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-surface-dark-elevated: #1d1f25;
    --color-hairline: #dddddd;
    --color-ink: #181d26;
    --color-body: #333840;
    --color-muted: #41454d;
    --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;
    --color-info-border: #458fff;
    --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;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    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 { display: block; max-width: 100%; height: auto; }

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

/* TOP NAV */
.top-nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    height: 64px;
}
.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-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-logo:hover { color: var(--color-ink); }
.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-left: auto;
}
.nav-menu a {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-body);
}
.nav-menu a[aria-current="page"] { color: var(--color-ink); font-weight: 500; }
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    margin-left: auto;
    padding: 4px;
}
.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 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;
    transition: background 0.15s;
}
.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;
    padding: 16px 24px;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
    cursor: pointer;
    transition: border-color 0.15s;
}
.btn-secondary:hover { border-color: var(--color-muted); color: var(--color-ink); }
.btn-secondary-on-dark {
    display: inline-flex;
    align-items: center;
    background: var(--color-canvas);
    color: var(--color-ink);
    font-size: 16px;
    font-weight: 500;
    padding: 16px 24px;
    border-radius: var(--rounded-lg);
    border: none;
    cursor: pointer;
}
.btn-legal {
    display: inline-flex;
    align-items: center;
    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;
}
.btn-legal-outline {
    background: transparent;
    color: var(--color-link);
    border: 1px solid var(--color-link);
}

/* HERO BAND */
.hero-band {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}
.hero-band .container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    max-width: 720px;
}
.hero-tag {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.hero-band h1 {
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
}
.hero-band p {
    font-size: 14px;
    color: var(--color-body);
    max-width: 540px;
    line-height: 1.6;
}
.hero-actions { display: flex; gap: var(--spacing-md); flex-wrap: wrap; }

/* SECTION GENERAL */
section { padding: var(--spacing-section) 0; }

/* ARTICLE CARDS GRID */
.articles-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);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.15s;
}
.article-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
.article-card-thumb {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}
.article-card-body { padding: var(--spacing-md); display: flex; flex-direction: column; gap: var(--spacing-xs); flex: 1; }
.article-card-tag {
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
}
.article-card-title {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-ink);
}
.article-card-excerpt {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
    flex: 1;
}
.article-card-meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
}
.article-card-link {
    margin-top: var(--spacing-md);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-link);
}

/* SIGNATURE CARDS */
.signature-coral {
    background: var(--color-signature-coral);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    color: var(--color-on-primary);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}
.signature-coral h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: #fff; }
.signature-coral p { font-size: 14px; line-height: 1.6; color: rgba(255,255,255,0.85); max-width: 520px; }

.signature-forest {
    background: var(--color-signature-forest);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    color: var(--color-on-primary);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}
.signature-forest h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: #fff; }
.signature-forest p { font-size: 14px; line-height: 1.6; color: rgba(255,255,255,0.8); max-width: 520px; }

.signature-dark {
    background: var(--color-surface-dark);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    color: var(--color-on-primary);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}
.signature-dark h2 { font-size: 32px; font-weight: 400; line-height: 1.2; color: #fff; }
.signature-dark p { font-size: 14px; line-height: 1.6; color: rgba(255,255,255,0.75); max-width: 540px; }

.cream-callout {
    background: var(--color-signature-cream);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
}
.cream-callout h3 { font-size: 20px; font-weight: 400; color: var(--color-ink); margin-bottom: var(--spacing-xs); }
.cream-callout p { font-size: 14px; color: var(--color-body); line-height: 1.6; }

/* CTA BAND */
.cta-band {
    background: var(--color-surface-strong);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}
.cta-band h2 { font-size: 32px; font-weight: 400; color: var(--color-ink); max-width: 500px; }

/* SECTION TITLE */
.section-label {
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
    margin-bottom: var(--spacing-md);
}
.section-title { font-size: 32px; font-weight: 400; color: var(--color-ink); margin-bottom: var(--spacing-lg); line-height: 1.2; }
.section-intro { font-size: 14px; color: var(--color-body); line-height: 1.7; max-width: 680px; }

/* DEMO GRID */
.demo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    align-items: start;
}
.demo-card {
    border-radius: var(--rounded-md);
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}
.demo-card-peach { background: var(--color-signature-peach); }
.demo-card-mint { background: var(--color-signature-mint); }
.demo-card-cream { background: var(--color-signature-cream); }
.demo-card h3 { font-size: 16px; font-weight: 500; color: var(--color-ink); }
.demo-card p { font-size: 14px; color: var(--color-body); line-height: 1.6; }

/* FORM */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 540px;
}
.form-row { display: flex; gap: var(--spacing-md); }
.form-group { display: flex; flex-direction: column; gap: var(--spacing-xs); flex: 1; }
.form-group label { font-size: 14px; font-weight: 500; color: var(--color-ink); }
.form-group input,
.form-group textarea {
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-sm);
    padding: 12px 16px;
    height: 44px;
    font-size: 14px;
    color: var(--color-ink);
    font-family: inherit;
    transition: border-color 0.15s;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-info-border);
}
.form-group textarea { height: 120px; resize: vertical; }
.form-disclaimer { font-size: 13px; color: var(--color-muted); }

/* ARTICLE PAGE */
.article-hero {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    background: var(--color-canvas);
}
.article-meta { font-size: 13px; color: var(--color-muted); margin-bottom: var(--spacing-md); display: flex; gap: var(--spacing-lg); }
.article-hero h1 { font-size: 40px; font-weight: 400; line-height: 1.2; color: var(--color-ink); max-width: 760px; margin-bottom: var(--spacing-lg); }
.article-hero .lead { font-size: 16px; color: var(--color-body); line-height: 1.7; max-width: 680px; }
.article-cover {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
    border-radius: var(--rounded-md);
    margin-bottom: var(--spacing-section);
}
.article-body { max-width: 720px; }
.article-body h2 { font-size: 32px; font-weight: 400; color: var(--color-ink); margin: var(--spacing-xxl) 0 var(--spacing-lg); line-height: 1.2; }
.article-body h3 { font-size: 24px; font-weight: 400; color: var(--color-ink); margin: var(--spacing-xl) 0 var(--spacing-md); }
.article-body p { font-size: 14px; color: var(--color-body); line-height: 1.8; 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; color: var(--color-body); line-height: 1.8; }
.article-body a { color: var(--color-link); }
.article-body strong { font-weight: 500; color: var(--color-ink); }

.article-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--spacing-xxl);
    align-items: start;
}
.article-sidebar { display: flex; flex-direction: column; gap: var(--spacing-lg); }
.sidebar-card {
    background: var(--color-surface-soft);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}
.sidebar-card strong { font-size: 14px; font-weight: 500; color: var(--color-ink); }
.sidebar-card a { display: block; font-size: 14px; color: var(--color-link); line-height: 1.7; }
.sidebar-card p { font-size: 14px; color: var(--color-body); line-height: 1.6; }

/* PAGE GENERIC */
.page-hero { padding: var(--spacing-section) 0 var(--spacing-xl); background: var(--color-canvas); }
.page-hero h1 { font-size: 40px; font-weight: 400; 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: 600px; }
.page-body { max-width: 760px; padding-bottom: var(--spacing-section); }
.page-body h2 { font-size: 24px; font-weight: 400; color: var(--color-ink); margin: var(--spacing-xl) 0 var(--spacing-md); }
.page-body p { font-size: 14px; color: var(--color-body); line-height: 1.8; 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: 1.8; }
.page-body a { color: var(--color-link); }
.page-updated { font-size: 13px; color: var(--color-muted); margin-bottom: var(--spacing-xl); }

/* FOOTER */
.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) var(--spacing-xl);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--spacing-xl);
}
.footer-col { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.footer-brand { font-size: 18px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-xs); }
.footer-tagline { font-size: 14px; color: var(--color-muted); line-height: 1.6; }
.footer-col strong { font-size: 14px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-xs); }
.footer-col a, .footer-col span { font-size: 14px; color: var(--color-muted); line-height: 1.8; }
.footer-col a:hover { color: var(--color-ink); }
.footer-legal {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xxl);
    border-top: 1px solid var(--color-hairline);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--color-muted);
}
.footer-legal-links { display: flex; gap: var(--spacing-md); }
.footer-legal-links a { font-size: 13px; color: var(--color-muted); }

/* COOKIE BANNER */
.cookie-banner {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    z-index: 999;
    background: var(--color-surface-dark);
    color: #fff;
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    max-width: 620px;
    width: calc(100% - var(--spacing-xxl));
    box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    display: none;
}
.cookie-banner.visible { display: block; }
.cookie-inner { display: flex; flex-direction: column; gap: var(--spacing-md); }
.cookie-inner p { font-size: 14px; color: rgba(255,255,255,0.85); line-height: 1.6; }
.cookie-inner p a { color: rgba(255,255,255,0.9); text-decoration: underline; }
.cookie-buttons { display: flex; gap: var(--spacing-md); }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .demo-grid { grid-template-columns: repeat(2, 1fr); }
    .article-layout { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .cta-band { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 768px) {
    .container { padding: 0 var(--spacing-md); }
    .nav-inner { padding: 0 var(--spacing-md); }
    .nav-hamburger { display: flex; }
    .nav-menu {
        display: none;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: var(--color-canvas);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--spacing-xl);
        z-index: 99;
    }
    .nav-menu.open { display: flex; }
    .nav-menu a { font-size: 20px; }
    .hero-band h1 { font-size: 28px; }
    .section-title { font-size: 24px; }
    .articles-grid { grid-template-columns: 1fr; }
    .demo-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-legal { flex-direction: column; gap: var(--spacing-sm); text-align: center; }
    .signature-coral, .signature-forest, .signature-dark, .cta-band { padding: var(--spacing-xl); }
    .signature-coral h2, .signature-forest h2, .signature-dark h2 { font-size: 24px; }
    .article-hero h1 { font-size: 28px; }
    .page-hero h1 { font-size: 28px; }
    section { padding: var(--spacing-xxl) 0; }
    .form-row { flex-direction: column; }
}