: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-border-strong: #9297a0;
    --color-on-primary: #ffffff;
    --color-link: #1b61c9;
    --color-link-active: #1a3866;
    --color-info: #254fad;
    --color-info-border: #458fff;
    --color-success: #006400;
    --color-signature-coral: #aa2d00;
    --color-signature-forest: #0a2e0e;
    --color-signature-cream: #f5e9d4;
    --color-signature-peach: #fcab79;
    --color-signature-mint: #a8d8c4;
    --color-signature-yellow: #f4d35e;
    --color-signature-mustard: #d9a441;

    --rounded-xs: 2px;
    --rounded-sm: 6px;
    --rounded-md: 10px;
    --rounded-lg: 12px;
    --rounded-pill: 9999px;
    --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-main: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { 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:active { color: var(--color-link-active); }

ul, ol { list-style: none; }

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

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

.nav-inner {
    max-width: 1280px;
    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);
    line-height: 1.4;
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-dot { color: var(--color-signature-coral); }

.nav-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    margin-left: auto;
}

.nav-menu a {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-ink);
    line-height: 1.25;
    padding: var(--spacing-xs) 0;
}

.nav-menu a[aria-current="page"] {
    font-weight: 500;
    border-bottom: 2px solid var(--color-ink);
}

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

.nav-hamburger 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;
    text-decoration: none;
    box-shadow: 0 2px 8px rgba(24,29,38,0.12);
    transition: background 0.15s;
}

.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;
}

.btn-secondary:active { background: var(--color-surface-soft); 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;
}

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

.hero-inner {
    max-width: 1280px;
    margin: 0 auto;
}

.hero-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.16px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

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

.hero-sub {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.25;
    color: var(--color-body);
    max-width: 560px;
    margin-bottom: var(--spacing-xl);
}

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

.section-band {
    padding: var(--spacing-section) var(--spacing-xxl);
    background: var(--color-canvas);
}

.section-inner {
    max-width: 1280px;
    margin: 0 auto;
}

.section-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.16px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
}

.section-band h2 {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xl);
    max-width: 680px;
}

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

.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;
}

.article-card-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.article-card-body {
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    flex: 1;
}

.article-card-tag {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.16px;
    text-transform: uppercase;
    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);
}

.article-card-desc {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-body);
    flex: 1;
    margin-bottom: var(--spacing-md);
}

.article-card-meta {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.16px;
}

.signature-coral-card {
    background: var(--color-signature-coral);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    color: var(--color-on-primary);
    margin: 0 var(--spacing-xxl);
    max-width: calc(1280px + var(--spacing-xxl));
    margin-left: auto;
    margin-right: auto;
}

.signature-coral-card h2 {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-on-primary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
}

.signature-coral-card p {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-on-primary);
    max-width: 560px;
    margin-bottom: var(--spacing-xl);
}

.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;
    color: var(--color-on-primary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
}

.hero-card-dark p {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-on-primary);
    opacity: 0.85;
    max-width: 560px;
    margin-bottom: var(--spacing-xl);
}

.cta-band-light {
    background: var(--color-surface-strong);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    text-align: center;
}

.cta-band-light h2 {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
}

.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);
    overflow: hidden;
}

.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-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;
    line-height: 1.25;
    color: var(--color-body);
}

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

.text-input {
    background: var(--color-canvas);
    color: var(--color-ink);
    font-size: 14px;
    font-weight: 400;
    border-radius: var(--rounded-sm);
    padding: 12px 16px;
    height: 44px;
    border: 1px solid var(--color-hairline);
    width: 100%;
    font-family: var(--font-main);
}

.text-input:focus {
    outline: none;
    border-color: var(--color-info-border);
}

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

.contact-form .field-full { grid-column: 1 / -1; }

.contact-form label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

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

.footer-inner {
    max-width: 1280px;
    margin: 0 auto;
}

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

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

.footer-desc {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.25;
    margin-bottom: var(--spacing-md);
}

.footer-address {
    font-size: 14px;
    color: var(--color-muted);
    font-style: normal;
    line-height: 1.8;
}

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

.footer-col-title {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.16px;
    text-transform: uppercase;
}

.footer-col ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.25;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--color-hairline);
    padding-top: var(--spacing-lg);
    font-size: 14px;
    color: var(--color-muted);
}

.footer-links-legal a {
    color: var(--color-muted);
    font-size: 14px;
}

.article-page {
    padding: var(--spacing-section) var(--spacing-xxl);
    max-width: 1280px;
    margin: 0 auto;
}

.article-header { margin-bottom: var(--spacing-xxl); }

.article-meta {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.16px;
    margin-bottom: var(--spacing-md);
}

.article-page h1 {
    font-size: 48px;
    font-weight: 500;
    line-height: 1.1;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
}

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

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

.article-lead {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-body);
    max-width: 720px;
    margin-bottom: var(--spacing-xxl);
}

.article-body {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-xxl);
    align-items: start;
}

.article-content p {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-body);
    margin-bottom: var(--spacing-lg);
    max-width: 680px;
}

.article-content ul {
    list-style: disc;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.article-content ul li {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-body);
    margin-bottom: var(--spacing-xs);
}

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

.article-aside {
    position: sticky;
    top: 80px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.aside-card {
    background: var(--color-surface-soft);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
}

.aside-card h4 {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}

.aside-card ul { list-style: disc; padding-left: var(--spacing-md); }
.aside-card ul li { font-size: 14px; color: var(--color-body); margin-bottom: var(--spacing-xs); }
.aside-card p { font-size: 14px; color: var(--color-body); line-height: 1.25; }

.article-img-full {
    width: 100%;
    border-radius: var(--rounded-md);
    aspect-ratio: 16/9;
    object-fit: cover;
    margin-bottom: var(--spacing-xl);
}

.article-img-caption {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.16px;
    margin-top: -12px;
    margin-bottom: var(--spacing-xl);
}

.page-content {
    padding: var(--spacing-section) var(--spacing-xxl);
    max-width: 1280px;
    margin: 0 auto;
}

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

.page-content h2 {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.35;
    color: var(--color-ink);
    letter-spacing: 0.12px;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.page-content p {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-body);
    margin-bottom: var(--spacing-md);
    max-width: 720px;
}

.page-content ul {
    list-style: disc;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.page-content ul li {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-body);
    margin-bottom: var(--spacing-xs);
}

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

.page-updated {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xl);
}

.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;
    color: var(--color-on-primary);
    margin-bottom: var(--spacing-md);
}

.signature-forest-card p {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-on-primary);
    opacity: 0.85;
    max-width: 560px;
}

.cookie-banner {
    position: fixed;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--color-primary);
    color: var(--color-on-primary);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    z-index: 999;
    box-shadow: 0 8px 32px rgba(0,0,0,0.28);
    flex-wrap: wrap;
}

.cookie-banner p {
    font-size: 14px;
    line-height: 1.25;
    color: var(--color-on-primary);
    flex: 1;
    min-width: 240px;
}

.cookie-banner a {
    color: var(--color-on-primary);
    text-decoration: underline;
}

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

.btn-cookie-accept {
    background: var(--color-canvas);
    color: var(--color-ink);
    font-size: 13.12px;
    font-weight: 600;
    border-radius: var(--rounded-xs);
    padding: 12px 10px;
    border: none;
    cursor: pointer;
}

.btn-cookie-reject {
    background: transparent;
    color: var(--color-on-primary);
    font-size: 13.12px;
    font-weight: 600;
    border-radius: var(--rounded-xs);
    padding: 12px 10px;
    border: 1px solid rgba(255,255,255,0.3);
    cursor: pointer;
}

.breadcrumb {
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xl);
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.breadcrumb a { color: var(--color-muted); }
.breadcrumb span { color: var(--color-border-strong); }

.about-hero {
    padding: var(--spacing-section) var(--spacing-xxl);
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
}

.about-hero-inner {
    max-width: 1280px;
    margin: 0 auto;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.related-card {
    background: var(--color-surface-soft);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
}

.related-card h4 {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

.related-card p {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.25;
    margin-bottom: var(--spacing-md);
}

.related-card a { font-size: 14px; font-weight: 500; color: var(--color-link); }

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

@media (max-width: 768px) {
    :root {
        --spacing-section: 64px;
        --spacing-xxl: 24px;
    }

    .nav-menu {
        display: none;
        position: fixed;
        inset: 0;
        background: var(--color-canvas);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--spacing-xl);
        z-index: 200;
    }

    .nav-menu.open { display: flex; }
    .nav-menu a { font-size: 20px; }
    .nav-hamburger { display: flex; }

    .hero-band h1 { font-size: 28px; }
    .section-band h2 { font-size: 24px; }
    .article-page h1 { font-size: 32px; }

    .article-grid { grid-template-columns: 1fr; }
    .demo-grid { grid-template-columns: 1fr; }
    .contact-form { grid-template-columns: 1fr; }
    .contact-form .field-full { grid-column: 1; }
    .footer-cols { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; gap: var(--spacing-xs); text-align: center; }
    .related-grid { grid-template-columns: 1fr; }
    .cookie-banner { flex-direction: column; align-items: flex-start; }
    .signature-coral-card { margin: 0; }
}