*, *::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-signature-yellow: #f4d35e;
    --rounded-xs: 2px;
    --rounded-sm: 6px;
    --rounded-md: 10px;
    --rounded-lg: 12px;
    --rounded-full: 9999px;
    --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-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 1280px;
}

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

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

a { color: var(--color-link); text-decoration: none; }
a:active { 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);
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 20px;
    font-weight: 500;
    color: var(--color-ink);
    letter-spacing: -0.3px;
}

.logo span { color: var(--color-signature-coral); }

.main-nav ul {
    display: flex;
    gap: var(--spacing-xl);
    list-style: none;
}

.main-nav a {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-body);
}

.main-nav a[aria-current="page"] {
    color: var(--color-ink);
    font-weight: 500;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    transition: transform 0.2s, opacity 0.2s;
}

.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;
    min-height: 48px;
}

.btn-primary:active { 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;
    min-height: 48px;
}

.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;
    padding: 12px 10px;
    border-radius: var(--rounded-xs);
    border: none;
    cursor: pointer;
    min-height: 40px;
}

.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: 680px;
    margin-bottom: var(--spacing-lg);
}

.hero-band .hero-sub {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-body);
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
    line-height: 1.6;
}

.hero-btn-row {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

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

.section-title {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
    max-width: 640px;
    margin-bottom: var(--spacing-xxl);
}

.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;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

.article-card-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-radius: var(--rounded-md) var(--rounded-md) 0 0;
}

.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: 1.5;
    flex: 1;
}

.article-card-meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
}

.signature-coral-card {
    background: var(--color-signature-coral);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    color: var(--color-on-primary);
}

.signature-coral-card h2 {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.signature-coral-card p {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 560px;
    opacity: 0.9;
}

.signature-forest-card {
    background: var(--color-signature-forest);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    color: var(--color-on-primary);
}

.signature-forest-card h2 {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.signature-forest-card p {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 560px;
    opacity: 0.9;
}

.hero-card-dark {
    background: var(--color-surface-dark);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    color: var(--color-on-primary);
}

.hero-card-dark h2 {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.hero-card-dark p {
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 560px;
    opacity: 0.9;
}

.cream-callout {
    background: var(--color-signature-cream);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
}

.cream-callout h3 {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.35;
    color: var(--color-ink);
    letter-spacing: 0.12px;
    margin-bottom: var(--spacing-md);
}

.cream-callout p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
}

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

.demo-card {
    border-radius: var(--rounded-md);
    padding: var(--spacing-md);
    overflow: hidden;
}

.demo-card--peach { background: var(--color-signature-peach); }
.demo-card--mint  { background: var(--color-signature-mint); }
.demo-card--yellow{ background: var(--color-signature-yellow); }

.demo-card h3 {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

.demo-card p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
}

.demo-card img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--rounded-md);
    margin-bottom: var(--spacing-md);
}

.cta-band-light {
    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);
    flex-wrap: wrap;
}

.cta-band-light h2 {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.2;
    max-width: 480px;
}

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

.contact-section h2 {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}

.contact-section p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 560px;
}

.contact-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    max-width: 640px;
}

.contact-form input,
.contact-form textarea {
    background: var(--color-canvas);
    color: var(--color-ink);
    font-family: var(--font-base);
    font-size: 14px;
    padding: 12px 16px;
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-sm);
    height: 44px;
    width: 100%;
    outline: none;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: #458fff;
}

.contact-form textarea {
    height: auto;
    min-height: 100px;
    resize: vertical;
    grid-column: 1 / -1;
}

.contact-form .btn-primary {
    grid-column: 1 / -1;
    justify-self: start;
}

.article-hero {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}

.article-hero h1 {
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    max-width: 720px;
    margin-bottom: var(--spacing-md);
}

.article-hero .article-meta {
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xxl);
}

.article-hero .article-meta a {
    color: var(--color-muted);
}

.article-img-featured {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
    border-radius: var(--rounded-md);
    margin-bottom: var(--spacing-xxl);
}

.article-body {
    max-width: 720px;
}

.article-body h2 {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.2;
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-md);
}

.article-body h3 {
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.35;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.article-body p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.article-body ul, .article-body ol {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.article-body li { margin-bottom: var(--spacing-xxs); }

.article-body a { color: var(--color-link); }

.article-body .note {
    background: var(--color-signature-cream);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
}

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

.article-related h2 {
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xl);
}

.page-section {
    padding: var(--spacing-section) 0;
    max-width: 720px;
}

.page-section h1 {
    font-size: 40px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.2;
    margin-bottom: var(--spacing-xxl);
}

.page-section h2 {
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-md);
}

.page-section p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.page-section ul {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.page-section li { margin-bottom: var(--spacing-xxs); }

.page-section a { color: var(--color-link); }

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

.footer-inner {}

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

.footer-brand {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
}

.footer-brand span { color: var(--color-signature-coral); }

.footer-tagline {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.footer-col address {
    font-style: normal;
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.7;
}

.footer-col address a { color: var(--color-muted); }

.footer-col h4 {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}

.footer-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--color-muted);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-hairline);
}

.footer-bottom p {
    font-size: 13px;
    color: var(--color-muted);
    line-height: 1.5;
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 999;
    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-xl);
    flex-wrap: wrap;
}

.cookie-banner p {
    font-size: 14px;
    line-height: 1.6;
    max-width: 700px;
    opacity: 0.9;
}

.cookie-banner p a { color: #7eb3ff; }

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

.breadcrumb {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-lg);
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    flex-wrap: wrap;
}

.breadcrumb a { color: var(--color-muted); }
.breadcrumb span { opacity: 0.5; }

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

.articles-list-page h1 {
    font-size: 40px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}

.articles-list-page .page-desc {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
}

@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .demo-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-cols { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .container { padding: 0 var(--spacing-lg); }

    .nav-toggle { display: flex; }

    .main-nav {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-canvas);
        z-index: 99;
        padding: var(--spacing-xl);
    }

    .main-nav.is-open { display: block; }

    .main-nav ul {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .main-nav a { font-size: 20px; }

    .hero-band h1 { font-size: 32px; }
    .section-title { font-size: 24px; }
    .article-hero h1 { font-size: 28px; }
    .articles-grid { grid-template-columns: 1fr; }
    .demo-grid { grid-template-columns: 1fr; }
    .footer-cols { grid-template-columns: 1fr; }
    .contact-form { grid-template-columns: 1fr; }
    .cta-band-light { flex-direction: column; align-items: flex-start; }
    .cta-band-light h2 { font-size: 24px; }
    .hero-band { padding: var(--spacing-xxl) 0; }
    .section { padding: var(--spacing-xxl) 0; }
    .cookie-banner { flex-direction: column; align-items: flex-start; }
    .signature-coral-card h2,
    .signature-forest-card h2,
    .hero-card-dark h2 { font-size: 24px; }
    .page-section h1 { font-size: 28px; }
}