*, *::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;

    --rounded-xs: 2px;
    --rounded-sm: 6px;
    --rounded-md: 10px;
    --rounded-lg: 12px;
    --rounded-pill: 9999px;
    --rounded-full: 50%;

    --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-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --max-width: 1280px;
}

html {
    font-size: 14px;
    color: var(--color-body);
    background: var(--color-canvas);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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);
}

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

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xxl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.nav-brand {
    display: flex;
    align-items: center;
    color: var(--color-ink);
    font-size: 20px;
    font-weight: 500;
    letter-spacing: -0.3px;
    flex-shrink: 0;
}
.nav-brand:hover {
    color: var(--color-ink);
}
.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-primary);
    color: var(--color-on-primary);
    border-radius: var(--rounded-sm);
    font-size: 14px;
    font-weight: 600;
    margin-right: 6px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
}
.nav-menu a {
    color: var(--color-ink);
    font-size: 14px;
    font-weight: 400;
    white-space: nowrap;
}
.nav-menu a:hover {
    color: var(--color-link);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    display: block;
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

.hero-band {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}
.hero-band .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}
.hero-content h1 {
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.5px;
}
.hero-content p {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 480px;
}
.hero-img {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
}
.hero-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.btn-primary {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-on-primary);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    padding: 14px 24px;
    border-radius: var(--rounded-lg);
    border: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s;
}
.btn-primary:hover {
    background: var(--color-primary-active);
    color: var(--color-on-primary);
}

.btn-secondary {
    display: inline-block;
    background: var(--color-canvas);
    color: var(--color-ink);
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    padding: 14px 24px;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
    cursor: pointer;
    white-space: nowrap;
}

.btn-legal {
    display: inline-block;
    background: var(--color-link);
    color: var(--color-on-primary);
    font-size: 13px;
    font-weight: 600;
    padding: 10px 12px;
    border-radius: var(--rounded-xs);
    border: none;
    cursor: pointer;
}
.btn-legal-reject {
    display: inline-block;
    background: transparent;
    color: var(--color-on-primary);
    font-size: 13px;
    font-weight: 600;
    padding: 10px 12px;
    border-radius: var(--rounded-xs);
    border: 1px solid rgba(255,255,255,0.4);
    cursor: pointer;
}

.section-band {
    padding: var(--spacing-section) 0;
}
.section-band--soft {
    background: var(--color-surface-soft);
}
.section-band--cream {
    background: var(--color-signature-cream);
}
.section-band--dark {
    background: var(--color-surface-dark);
    color: var(--color-on-primary);
}
.section-band--coral {
    background: var(--color-signature-coral);
    color: var(--color-on-primary);
}

.section-label {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-sm);
}
.section-band--dark .section-label,
.section-band--coral .section-label {
    color: rgba(255,255,255,0.65);
}

.section-title {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}
.section-band--dark .section-title,
.section-band--coral .section-title {
    color: var(--color-on-primary);
}

.section-subtitle {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.6;
    max-width: 640px;
    margin-bottom: var(--spacing-xl);
}
.section-band--dark .section-subtitle,
.section-band--coral .section-subtitle {
    color: rgba(255,255,255,0.8);
}

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

.article-card {
    background: var(--color-canvas);
    border-radius: var(--rounded-md);
    overflow: hidden;
    border: 1px solid var(--color-hairline);
    display: flex;
    flex-direction: column;
}
.article-card__thumb {
    aspect-ratio: 16/9;
    overflow: hidden;
}
.article-card__thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.article-card:hover .article-card__thumb img {
    transform: scale(1.03);
}
.article-card__body {
    padding: var(--spacing-md);
    flex: 1;
    display: flex;
    flex-direction: column;
}
.article-card__tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xs);
}
.article-card__title {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    line-height: 1.4;
    margin-bottom: var(--spacing-xs);
}
.article-card__title a {
    color: var(--color-ink);
}
.article-card__title a:hover {
    color: var(--color-link);
}
.article-card__excerpt {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
    flex: 1;
    margin-bottom: var(--spacing-md);
}
.article-card__meta {
    font-size: 13px;
    color: var(--color-muted);
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}
.demo-card {
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
    min-height: 200px;
}
.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__label {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}
.demo-card__text {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
}

.coral-card {
    background: var(--color-signature-coral);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
}
.coral-card h2 {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-on-primary);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}
.coral-card p {
    font-size: 14px;
    color: rgba(255,255,255,0.85);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
}
.coral-card img {
    border-radius: var(--rounded-md);
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.contact-section {
    padding: var(--spacing-section) 0;
}
.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 {
    height: 44px;
    padding: 0 var(--spacing-md);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-sm);
    font-size: 14px;
    color: var(--color-ink);
    background: var(--color-canvas);
    font-family: var(--font-sans);
    outline: none;
    transition: border-color 0.15s;
}
.form-group textarea {
    height: 100px;
    padding: var(--spacing-sm) var(--spacing-md);
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: #458fff;
}

.cta-band {
    padding: var(--spacing-xxl) var(--spacing-xxl);
    background: var(--color-surface-strong);
    border-radius: var(--rounded-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    margin: var(--spacing-section) auto;
    max-width: var(--max-width);
}
.cta-band h2 {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.2;
}

.article-hero {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
}
.article-hero__breadcrumb {
    font-size: 13px;
    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;
    color: var(--color-ink);
    line-height: 1.2;
    max-width: 800px;
    margin-bottom: var(--spacing-md);
}
.article-hero__meta {
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xxl);
}
.article-hero__img {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    aspect-ratio: 16/7;
    max-width: 900px;
}
.article-hero__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-body {
    padding: var(--spacing-section) 0;
    max-width: 760px;
    margin: 0 auto;
}
.article-body h2 {
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-md);
    line-height: 1.35;
    letter-spacing: 0.12px;
}
.article-body h3 {
    font-size: 20px;
    font-weight: 400;
    color: var(--color-ink);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    line-height: 1.5;
}
.article-body p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.75;
    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: 1.75;
    margin-bottom: 6px;
}
.article-body a {
    color: var(--color-link);
}
.article-body a:hover {
    color: var(--color-link-active);
}
.article-body figure {
    margin: var(--spacing-xl) 0;
}
.article-body figure img {
    border-radius: var(--rounded-md);
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}
.article-body figcaption {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
}

.related-articles {
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-section) 0;
}

.page-content {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--spacing-section) var(--spacing-xxl);
}
.page-content h1 {
    font-size: 40px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xl);
    line-height: 1.2;
}
.page-content h2 {
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-md);
    letter-spacing: 0.12px;
}
.page-content p,
.page-content li {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.75;
    margin-bottom: var(--spacing-md);
}
.page-content ul,
.page-content ol {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}
.page-content .updated {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xxl);
}

.site-footer {
    background: var(--color-canvas);
    border-top: 1px solid var(--color-hairline);
    margin-top: auto;
}
.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-section) var(--spacing-xxl) var(--spacing-xl);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}
.footer-brand {
    display: block;
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}
.footer-brand:hover {
    color: var(--color-ink);
}
.footer-about p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}
.footer-about address {
    font-style: normal;
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.7;
}
.footer-about address a {
    color: var(--color-muted);
}
.footer-col h3 {
    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 a {
    font-size: 14px;
    color: var(--color-muted);
}
.footer-col ul a:hover {
    color: var(--color-link);
}
.footer-bottom {
    border-top: 1px solid var(--color-hairline);
    padding-top: var(--spacing-lg);
}
.footer-bottom p {
    font-size: 13px;
    color: var(--color-muted);
    line-height: 1.6;
    margin-bottom: 4px;
}
.footer-disclaimer {
    font-size: 12px;
    color: var(--color-muted);
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    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);
    z-index: 9999;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.cookie-banner.hidden {
    display: none;
}
.cookie-banner p {
    font-size: 13px;
    color: rgba(255,255,255,0.85);
    line-height: 1.6;
    flex: 1;
}
.cookie-banner p a {
    color: rgba(255,255,255,0.85);
    text-decoration: underline;
}
.cookie-actions {
    display: flex;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

@media (max-width: 1023px) {
    .container { padding: 0 var(--spacing-lg); }
    .nav-container { padding: 0 var(--spacing-lg); }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .demo-grid { grid-template-columns: repeat(2, 1fr); }
    .coral-card { grid-template-columns: 1fr; }
    .hero-band .container { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-container { padding: var(--spacing-xl) var(--spacing-lg); }
    .cta-band { flex-direction: column; text-align: center; padding: var(--spacing-xl); }
}

@media (max-width: 767px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-canvas);
        border-bottom: 1px solid var(--color-hairline);
        flex-direction: column;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
    }
    .nav-menu.open { display: flex; }
    .articles-grid { grid-template-columns: 1fr; }
    .demo-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 28px; }
    .section-title { font-size: 24px; }
    .coral-card h2 { font-size: 24px; }
    .article-hero h1 { font-size: 28px; }
    .page-content h1 { font-size: 28px; }
    .cookie-banner { flex-direction: column; align-items: flex-start; }
    .cta-band h2 { font-size: 24px; }
}