*, *::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-ink:            #181d26;
    --color-body:           #333840;
    --color-muted:          #41454d;
    --color-hairline:       #dddddd;
    --color-on-primary:     #ffffff;
    --color-link:           #1b61c9;
    --color-coral:          #aa2d00;
    --color-forest:         #0a2e0e;
    --color-cream:          #f5e9d4;
    --color-peach:          #fcab79;
    --color-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-stack:           'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --max-width:            1280px;
}

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

body {
    font-family: var(--font-stack);
    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: #1a3866; }
img { display: block; max-width: 100%; height: auto; }
ul { list-style: none; }

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

/* ---- HEADER & NAV ---- */
.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: 18px;
    font-weight: 500;
    color: var(--color-ink);
    letter-spacing: -0.3px;
}
.main-nav ul {
    display: flex;
    gap: var(--spacing-lg);
}
.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;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    width: 40px;
    height: 40px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    border-radius: 2px;
    transition: transform .25s, opacity .25s;
}

/* ---- HERO BAND ---- */
.hero-band {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}
.hero-band .container { max-width: 720px; margin: 0 auto; }
.hero-kicker {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.16px;
    margin-bottom: var(--spacing-md);
}
.hero-band h1 {
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
}
.hero-band p {
    font-size: 14px;
    color: var(--color-body);
    margin-bottom: var(--spacing-xl);
    max-width: 560px;
}
.hero-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--rounded-lg);
    margin-top: var(--spacing-xl);
}

/* ---- 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: 16px 24px;
    border-radius: var(--rounded-lg);
    border: none;
    cursor: pointer;
    white-space: nowrap;
}
.btn-primary:active { background: var(--color-primary-active); }
.btn-secondary {
    display: inline-block;
    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;
    white-space: nowrap;
}

/* ---- SECTION BANDS ---- */
.band { padding: var(--spacing-section) 0; }
.band-cream { background: var(--color-cream); }
.band-soft  { background: var(--color-surface-soft); }
.band-dark  { background: var(--color-surface-dark); }
.band-coral { background: var(--color-coral); }
.band-forest{ background: var(--color-forest); }

.band-dark h2,
.band-dark p,
.band-coral h2,
.band-coral p,
.band-forest h2,
.band-forest p { color: var(--color-on-primary); }

/* ---- SECTION TITLES ---- */
.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: 24px;
    font-weight: 400;
    line-height: 1.35;
    letter-spacing: 0.12px;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}
.section-body {
    font-size: 14px;
    color: var(--color-body);
    margin-bottom: var(--spacing-xl);
    max-width: 680px;
}

/* ---- ARTICLE CARD 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: 13px;
    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-title a { color: inherit; }
.article-card-meta {
    font-size: 13px;
    color: var(--color-muted);
}

/* ---- DEMO GRID CARDS ---- */
.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-peach); }
.demo-card-mint   { background: var(--color-mint); }
.demo-card-cream  { background: var(--color-cream); }
.demo-card-soft   { background: var(--color-surface-soft); border: 1px solid var(--color-hairline); }
.demo-card-title {
    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);
}

/* ---- SIGNATURE CARDS ---- */
.sig-card {
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
}
.sig-card h2 {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}
.sig-card p {
    font-size: 14px;
    margin-bottom: var(--spacing-xl);
    max-width: 540px;
}
.sig-card-coral  { background: var(--color-coral); color: var(--color-on-primary); }
.sig-card-forest { background: var(--color-forest); color: var(--color-on-primary); }
.sig-card-dark   { background: var(--color-surface-dark); color: var(--color-on-primary); }

/* ---- CTA BAND ---- */
.cta-band {
    background: var(--color-surface-strong);
    padding: var(--spacing-section) 0;
}
.cta-band .container { text-align: center; }
.cta-band h2 {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
}

/* ---- CONTACT FORM ---- */
.contact-form {
    background: var(--color-surface-soft);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    max-width: 560px;
    margin: 0 auto;
}
.contact-form h2 {
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
}
.form-group { margin-bottom: var(--spacing-md); }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--color-canvas);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-sm);
    padding: 12px 16px;
    font-size: 14px;
    color: var(--color-ink);
    font-family: var(--font-stack);
    height: 44px;
}
.form-group textarea { height: auto; min-height: 100px; resize: vertical; }
.form-group input:focus,
.form-group textarea:focus { outline: none; border-color: #458fff; }
.form-submit { width: 100%; }

/* ---- ARTICLE PAGE ---- */
.article-header { padding: var(--spacing-section) 0 var(--spacing-xxl); }
.article-header .container { max-width: 720px; }
.article-tag {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-muted);
    letter-spacing: 0.16px;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}
.article-header h1 {
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}
.article-meta {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xl);
}
.article-hero-img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border-radius: var(--rounded-lg);
}
.article-body {
    padding: var(--spacing-xxl) 0 var(--spacing-section);
}
.article-body .container { max-width: 720px; }
.article-body h2 {
    font-size: 32px;
    font-weight: 400;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-md);
}
.article-body h3 {
    font-size: 24px;
    font-weight: 400;
    letter-spacing: 0.12px;
    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: 20px;
    margin-bottom: var(--spacing-md);
}
.article-body li {
    font-size: 14px;
    color: var(--color-body);
    margin-bottom: 6px;
    list-style: disc;
}
.article-body ol li { list-style: decimal; }
.article-body a { color: var(--color-link); }
.article-img-full {
    width: 100%;
    border-radius: var(--rounded-md);
    margin: var(--spacing-xl) 0;
}
.article-img-caption {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: -12px;
    margin-bottom: var(--spacing-xl);
}
.related-articles { padding: var(--spacing-section) 0; border-top: 1px solid var(--color-hairline); }
.related-articles h2 {
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xl);
}

/* ---- PAGES (about, privacy, terms) ---- */
.page-header { padding: var(--spacing-section) 0 var(--spacing-xl); }
.page-header .container { max-width: 720px; }
.page-header h1 {
    font-size: 40px;
    font-weight: 400;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}
.page-body { padding-bottom: var(--spacing-section); }
.page-body .container { max-width: 720px; }
.page-body h2 {
    font-size: 24px;
    font-weight: 400;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}
.page-body p {
    font-size: 14px;
    color: var(--color-body);
    margin-bottom: var(--spacing-md);
}
.page-body ul { padding-left: 20px; margin-bottom: var(--spacing-md); }
.page-body li { list-style: disc; font-size: 14px; color: var(--color-body); margin-bottom: 6px; }
.page-body a { color: var(--color-link); }
.page-updated { font-size: 13px; color: var(--color-muted); }

/* ---- FOOTER ---- */
.site-footer { background: var(--color-canvas); border-top: 1px solid var(--color-hairline); }
.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-xl);
    padding: var(--spacing-section) var(--spacing-xxl);
}
.footer-brand {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
}
.footer-desc {
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-md);
}
.footer-contact {
    font-size: 14px;
    color: var(--color-muted);
    line-height: 1.6;
}
.footer-contact a { color: var(--color-muted); }
.footer-heading {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}
.footer-col ul li { margin-bottom: var(--spacing-xs); }
.footer-col ul li a {
    font-size: 14px;
    color: var(--color-muted);
}
.footer-legal {
    border-top: 1px solid var(--color-hairline);
    padding: var(--spacing-lg) var(--spacing-xxl);
}
.footer-legal p {
    font-size: 13px;
    color: var(--color-muted);
}

/* ---- 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-lg) var(--spacing-xxl);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}
.cookie-banner p {
    font-size: 14px;
    max-width: 680px;
}
.cookie-banner a { color: #a8d8c4; }
.cookie-actions { display: flex; gap: var(--spacing-sm); flex-shrink: 0; }
.btn-cookie-accept,
.btn-cookie-reject {
    font-size: 13.12px;
    font-weight: 600;
    padding: 12px 10px;
    border-radius: var(--rounded-xs);
    border: none;
    cursor: pointer;
    white-space: nowrap;
}
.btn-cookie-accept { background: var(--color-link); color: var(--color-on-primary); }
.btn-cookie-reject { background: var(--color-surface-strong); color: var(--color-ink); }

/* ---- RESPONSIVE ---- */
@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: 1fr 1fr; }
    .demo-grid      { grid-template-columns: 1fr 1fr; }
    .footer-inner   { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .container      { padding: 0 var(--spacing-md); }
    .nav-toggle     { display: flex; }
    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-canvas);
        border-bottom: 1px solid var(--color-hairline);
        padding: var(--spacing-md);
        z-index: 99;
    }
    .main-nav.open  { display: block; }
    .main-nav ul    { flex-direction: column; gap: var(--spacing-sm); }
    .hero-band h1,
    .article-header h1,
    .page-header h1 { font-size: 32px; }
    .section-title  { font-size: 24px; }
    .hero-img,
    .article-hero-img { height: 240px; }
    .articles-grid  { grid-template-columns: 1fr; }
    .demo-grid      { grid-template-columns: 1fr; }
    .footer-inner   { grid-template-columns: 1fr; }
    .cookie-banner  { flex-direction: column; align-items: flex-start; }
    .sig-card       { padding: var(--spacing-xl); }
    .sig-card h2    { font-size: 24px; }
    .contact-form   { padding: var(--spacing-xl); }
}