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

*, *::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-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;
    --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-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Inter Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 1280px;
}

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-body);
    background: var(--color-canvas);
    -webkit-font-smoothing: antialiased;
}

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

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

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

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

.top-nav .container {
    display: flex;
    align-items: center;
    height: 100%;
    gap: var(--spacing-xl);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    white-space: nowrap;
    flex-shrink: 0;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    list-style: none;
    flex: 1;
}

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

.nav-links a:hover {
    color: var(--color-ink);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-shrink: 0;
}

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

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    border-radius: 2px;
}

/* BUTTONS */
.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: 12px 24px;
    border-radius: var(--rounded-lg);
    border: none;
    cursor: pointer;
    text-align: center;
}

.btn-primary:active {
    background: var(--color-primary-active);
}

.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: 12px 24px;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
    cursor: pointer;
    text-align: center;
}

.btn-secondary:hover {
    color: var(--color-ink);
    border-color: var(--color-muted);
}

.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;
}

/* HERO */
.hero-band {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}

.hero-band h1 {
    font-family: var(--font-display);
    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: 16px;
    font-weight: 400;
    color: var(--color-body);
    max-width: 560px;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

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

.hero-meta {
    margin-top: var(--spacing-xl);
    font-size: 13px;
    color: var(--color-muted);
}

/* SIGNATURE CARDS */
.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-family: var(--font-display);
    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;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    max-width: 560px;
}

.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-family: var(--font-display);
    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;
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    max-width: 560px;
}

.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-family: var(--font-display);
    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;
    opacity: 0.85;
    margin-bottom: var(--spacing-xl);
    max-width: 520px;
}

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

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

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

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

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

.section-label {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-sm);
}

/* 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;
}

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

.article-card-body {
    padding: var(--spacing-md);
}

.article-card-tag {
    font-size: 11px;
    font-weight: 500;
    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;
    line-height: 1.4;
    color: var(--color-ink);
    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;
    margin-bottom: var(--spacing-md);
}

.article-card-meta {
    font-size: 13px;
    color: var(--color-muted);
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.article-card-meta span::before {
    content: '·';
    margin-right: var(--spacing-sm);
}

.article-card-meta span:first-child::before {
    content: '';
    margin-right: 0;
}

/* 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);
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
}

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

.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;
}

/* 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-family: var(--font-display);
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    max-width: 480px;
    line-height: 1.2;
}

/* CONTACT FORM */
.contact-form {
    max-width: 480px;
}

.form-group {
    margin-bottom: var(--spacing-md);
}

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

.form-group input,
.form-group textarea {
    width: 100%;
    height: 44px;
    background: var(--color-canvas);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: 14px;
    padding: 0 var(--spacing-md);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-sm);
    outline: none;
}

.form-group textarea {
    height: 120px;
    padding: var(--spacing-sm) var(--spacing-md);
    resize: vertical;
}

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

/* ARTICLE PAGE */
.article-hero {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    background: var(--color-canvas);
}

.article-hero h1 {
    font-family: var(--font-display);
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    max-width: 800px;
    margin-bottom: var(--spacing-lg);
}

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

.article-hero-img {
    width: 100%;
    max-width: 860px;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--rounded-md);
}

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

.article-body h2 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-md);
    line-height: 1.35;
}

.article-body h3 {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
    line-height: 1.4;
}

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

.article-body ul,
.article-body ol {
    margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-xl);
}

.article-body li {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-body);
    margin-bottom: 6px;
}

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

.article-body blockquote {
    border-left: 3px solid var(--color-hairline);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    color: var(--color-muted);
    font-size: 15px;
    line-height: 1.7;
}

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

.breadcrumb-sep {
    color: var(--color-hairline);
}

/* SIDEBAR RELATED */
.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: var(--spacing-section);
    align-items: start;
}

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

.sidebar-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-hairline);
}

.sidebar-link-list {
    list-style: none;
}

.sidebar-link-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-surface-soft);
}

.sidebar-link-list a {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
}

.sidebar-link-list a:hover {
    color: var(--color-link);
}

/* DIVIDER */
.divider {
    border: none;
    border-top: 1px solid var(--color-hairline);
    margin: 0;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-section);
    margin-bottom: var(--spacing-section);
}

.footer-brand p {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.6;
    margin-top: var(--spacing-md);
    max-width: 280px;
}

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

.footer-col ul {
    list-style: none;
}

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

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

.footer-col ul li a:hover {
    color: var(--color-link);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-hairline);
}

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

.footer-bottom-links {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.footer-bottom-links a {
    font-size: 13px;
    color: var(--color-muted);
}

.footer-bottom-links a:hover {
    color: var(--color-link);
}

/* COOKIE BANNER */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-surface-dark);
    color: var(--color-on-primary);
    padding: var(--spacing-md) var(--spacing-xxl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    z-index: 999;
    flex-wrap: wrap;
}

.cookie-banner p {
    font-size: 13px;
    line-height: 1.6;
    opacity: 0.85;
    max-width: 720px;
}

.cookie-banner p a {
    color: #9e9eff;
}

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

/* PAGES */
.page-hero {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
}

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

.page-hero p {
    font-size: 16px;
    color: var(--color-body);
    max-width: 560px;
    line-height: 1.6;
}

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

.page-body h2 {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-md);
    line-height: 1.35;
}

.page-body h3 {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    margin: var(--spacing-lg) 0 var(--spacing-sm);
}

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

.page-body ul,
.page-body ol {
    margin: var(--spacing-sm) 0 var(--spacing-md) var(--spacing-xl);
}

.page-body li {
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-body);
    margin-bottom: 6px;
}

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

/* CONTACT INFO */
.contact-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.contact-info-item dt {
    font-size: 13px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-muted);
    margin-bottom: 4px;
}

.contact-info-item dd {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.6;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    :root {
        --spacing-section: 72px;
    }

    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .demo-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-xl);
    }

    .article-layout {
        grid-template-columns: 1fr;
    }

    .cta-band {
        flex-direction: column;
        text-align: center;
    }

    .cta-band h2 {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-section: 48px;
    }

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

    .nav-links,
    .nav-right {
        display: none;
    }

    .nav-links.open,
    .nav-right.open {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

    .mobile-menu {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-canvas);
        padding: var(--spacing-xl) var(--spacing-md);
        flex-direction: column;
        gap: var(--spacing-lg);
        z-index: 99;
        overflow-y: auto;
    }

    .mobile-menu.open {
        display: flex;
    }

    .mobile-menu a {
        font-size: 18px;
        color: var(--color-ink);
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--color-hairline);
    }

    .hero-band h1 {
        font-size: 28px;
    }

    .articles-grid {
        grid-template-columns: 1fr;
    }

    .demo-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }

    .article-hero h1 {
        font-size: 28px;
    }

    .page-hero h1 {
        font-size: 28px;
    }

    .signature-coral-card h2,
    .signature-forest-card h2,
    .hero-card-dark h2 {
        font-size: 24px;
    }

    .contact-info-grid {
        grid-template-columns: 1fr;
    }

    .cookie-banner {
        padding: var(--spacing-md);
    }
}