*, *::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-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;
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 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: 1.6;
    color: var(--color-body);
    background: var(--color-canvas);
}

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

img { max-width: 100%; height: auto; display: block; border-radius: var(--rounded-md); }

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

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

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

.site-header__inner {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.site-header__logo {
    font-size: 20px;
    font-weight: 500;
    color: var(--color-ink);
    letter-spacing: -0.3px;
    flex-shrink: 0;
}
.site-header__logo:hover { text-decoration: none; }

.site-header__nav { display: flex; }

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

.nav__link {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-body);
    transition: color 0.15s;
}
.nav__link:hover, .nav__link--active { color: var(--color-ink); text-decoration: none; }

.site-header__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}
.site-header__burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    border-radius: 2px;
    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;
    transition: background 0.15s;
    text-decoration: none;
}
.btn-primary:hover { background: var(--color-primary-active); text-decoration: none; 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;
    transition: border-color 0.15s;
    text-decoration: none;
}
.btn-secondary:hover { border-color: var(--color-ink); text-decoration: none; }

.btn-legal {
    background: var(--color-link);
    color: #fff;
    font-size: 13.12px;
    font-weight: 600;
    padding: 12px 10px;
    border-radius: var(--rounded-xs);
    border: none;
    cursor: pointer;
}
.btn-legal--reject {
    background: transparent;
    color: var(--color-muted);
    border: 1px solid var(--color-hairline);
}

.hero-band {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}
.hero-band__inner {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    max-width: 720px;
    gap: var(--spacing-lg);
}
.hero-band__eyebrow {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.16px;
    color: var(--color-muted);
    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: 560px;
}
.hero-band__actions { display: flex; gap: var(--spacing-md); flex-wrap: wrap; }

.signature-coral-card {
    background: var(--color-signature-coral);
    color: var(--color-on-primary);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
}
.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; margin-bottom: var(--spacing-lg); opacity: 0.9; }

.signature-forest-card {
    background: var(--color-signature-forest);
    color: var(--color-on-primary);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
}
.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; margin-bottom: var(--spacing-lg); opacity: 0.9; }

.hero-card-dark {
    background: var(--color-surface-dark);
    color: var(--color-on-primary);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
}
.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; margin-bottom: var(--spacing-lg); opacity: 0.85; }

.cta-band-light {
    background: var(--color-surface-strong);
    padding: var(--spacing-section) 0;
}
.cta-band-light__inner {
    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);
    max-width: 560px;
}

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

.section__header {
    margin-bottom: var(--spacing-xl);
}
.section__eyebrow {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.16px;
    color: var(--color-muted);
    text-transform: uppercase;
    margin-bottom: var(--spacing-xs);
}
.section__title {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.2;
}
.section__desc {
    font-size: 14px;
    color: var(--color-body);
    margin-top: var(--spacing-sm);
    max-width: 600px;
}

.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);
    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 20px rgba(0,0,0,0.08); text-decoration: none; }

.article-card__img {
    aspect-ratio: 16 / 9;
    overflow: hidden;
}
.article-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
}

.article-card__body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
}
.article-card__tag {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.12px;
    text-transform: uppercase;
    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);
    flex: 1;
}
.article-card__meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: auto;
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--color-hairline);
}

.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--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);
    margin-bottom: var(--spacing-xs);
}
.demo-card p { font-size: 14px; color: var(--color-body); }

.two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}
.two-col--reversed { direction: rtl; }
.two-col--reversed > * { direction: ltr; }

.contact-form {
    max-width: 560px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}
.form-group { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.form-group label { font-size: 14px; font-weight: 500; color: var(--color-ink); }
.form-group input,
.form-group textarea {
    background: var(--color-canvas);
    color: var(--color-ink);
    font-size: 14px;
    font-family: var(--font-main);
    padding: 12px 16px;
    height: 44px;
    border-radius: var(--rounded-sm);
    border: 1px solid var(--color-hairline);
    outline: none;
    width: 100%;
    transition: border-color 0.15s;
}
.form-group textarea { height: auto; min-height: 100px; resize: vertical; }
.form-group input:focus,
.form-group textarea:focus { border-color: var(--color-info-border); }

.article-content {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}
.article-toc {
    position: sticky;
    top: 80px;
    background: var(--color-surface-soft);
    border-radius: var(--rounded-md);
    padding: var(--spacing-md);
}
.article-toc h4 {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.12px;
}
.article-toc ul { list-style: none; display: flex; flex-direction: column; gap: var(--spacing-xs); }
.article-toc a { font-size: 13px; color: var(--color-body); }
.article-toc a:hover { color: var(--color-ink); }

.article-body h1 { font-size: 40px; font-weight: 400; line-height: 1.2; color: var(--color-ink); margin-bottom: var(--spacing-lg); }
.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; color: var(--color-body); margin-bottom: var(--spacing-md); }
.article-body ul, .article-body ol { padding-left: var(--spacing-xl); margin-bottom: var(--spacing-md); }
.article-body li { font-size: 14px; color: var(--color-body); margin-bottom: var(--spacing-xs); }
.article-body a { color: var(--color-link); }
.article-body img { margin: var(--spacing-lg) 0; border-radius: var(--rounded-md); }

.article-meta {
    font-size: 13px;
    color: var(--color-muted);
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-hairline);
}

.breadcrumb {
    font-size: 13px;
    color: var(--color-muted);
    padding: var(--spacing-md) 0;
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}
.breadcrumb a { color: var(--color-muted); }
.breadcrumb span { opacity: 0.5; }

.page-hero {
    padding: var(--spacing-section) 0 var(--spacing-xl);
}
.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); max-width: 600px; }

.prose h2 { font-size: 24px; font-weight: 400; color: var(--color-ink); margin: var(--spacing-xl) 0 var(--spacing-md); }
.prose h3 { font-size: 18px; font-weight: 500; color: var(--color-ink); margin: var(--spacing-lg) 0 var(--spacing-sm); }
.prose p  { font-size: 14px; color: var(--color-body); margin-bottom: var(--spacing-md); }
.prose ul { padding-left: var(--spacing-xl); margin-bottom: var(--spacing-md); }
.prose li { font-size: 14px; color: var(--color-body); margin-bottom: var(--spacing-xs); }

.site-footer {
    background: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-section) 0 0;
}
.site-footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    padding-bottom: var(--spacing-xxl);
}
.site-footer__brand {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    display: block;
    margin-bottom: var(--spacing-sm);
}
.site-footer__tagline { font-size: 14px; color: var(--color-body); margin-bottom: var(--spacing-md); }
.site-footer__meta { font-size: 13px; color: var(--color-muted); line-height: 1.6; }
.site-footer__heading { font-size: 14px; font-weight: 500; color: var(--color-ink); margin-bottom: var(--spacing-sm); }
.site-footer__links { list-style: none; display: flex; flex-direction: column; gap: var(--spacing-xs); }
.site-footer__links a { font-size: 14px; color: var(--color-muted); }
.site-footer__links a:hover { color: var(--color-ink); text-decoration: none; }
.site-footer__address { font-style: normal; font-size: 14px; color: var(--color-muted); display: flex; flex-direction: column; gap: var(--spacing-xs); }
.site-footer__address a { color: var(--color-muted); }
.site-footer__legal {
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-md) 0;
    font-size: 13px;
    color: var(--color-muted);
    display: flex;
    align-items: center;
}
.site-footer__legal .container {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    flex-wrap: wrap;
}
.site-footer__legal a { color: var(--color-muted); }

.cookie-banner {
    position: fixed;
    bottom: var(--spacing-lg);
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-surface-dark);
    color: var(--color-on-primary);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    z-index: 9999;
    display: none;
    max-width: 680px;
    width: calc(100% - 2 * var(--spacing-lg));
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.cookie-banner.cookie-banner--visible { display: block; }
.cookie-banner__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--spacing-lg); flex-wrap: wrap; }
.cookie-banner__text { font-size: 14px; }
.cookie-banner__text a { color: #7eb3ff; }
.cookie-banner__actions { display: flex; gap: var(--spacing-xs); flex-shrink: 0; }

@media (max-width: 1024px) {
    .article-grid { grid-template-columns: 1fr 1fr; }
    .demo-grid { grid-template-columns: 1fr 1fr; }
    .site-footer__inner { grid-template-columns: 1fr 1fr; }
    .article-content { grid-template-columns: 1fr; }
    .article-toc { position: static; }
    .two-col { grid-template-columns: 1fr; }
    .two-col--reversed { direction: ltr; }
}

@media (max-width: 768px) {
    .container { padding: 0 var(--spacing-md); }
    .hero-band { padding: var(--spacing-xxl) 0; }
    .hero-band h1 { font-size: 28px; }
    .section { padding: var(--spacing-xxl) 0; }
    .section__title { font-size: 24px; }
    .article-grid { grid-template-columns: 1fr; }
    .demo-grid { grid-template-columns: 1fr; }
    .site-footer__inner { grid-template-columns: 1fr; }
    .site-header__nav { display: none; position: fixed; top: 64px; left: 0; right: 0; background: var(--color-canvas); border-bottom: 1px solid var(--color-hairline); padding: var(--spacing-lg); z-index: 99; }
    .site-header__nav.nav--open { display: block; }
    .nav__list { flex-direction: column; gap: var(--spacing-md); align-items: flex-start; }
    .site-header__burger { display: flex; }
    .cta-band-light__inner { flex-direction: column; align-items: flex-start; }
    .cta-band-light h2 { font-size: 24px; }
    .signature-coral-card h2,
    .signature-forest-card h2,
    .hero-card-dark h2 { font-size: 24px; }
    .signature-coral-card,
    .signature-forest-card,
    .hero-card-dark { padding: var(--spacing-xl); }
    .article-body h1 { font-size: 28px; }
    .page-hero h1 { font-size: 28px; }
}