*, *::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-info-border: #458fff;
    --color-signature-coral: #aa2d00;
    --color-signature-forest: #0a2e0e;
    --color-signature-cream: #f5e9d4;
    --color-signature-peach: #fcab79;
    --color-signature-mint: #a8d8c4;
    --color-border-strong: #9297a0;

    --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-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Fira Sans", "Droid Sans", "Helvetica Neue", sans-serif;
}

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

body {
    font-family: var(--font-family);
    color: var(--color-body);
    background: var(--color-canvas);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.25;
    -webkit-font-smoothing: antialiased;
}

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

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

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

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

/* 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 {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-size: 18px;
    font-weight: 500;
    color: var(--color-ink);
    letter-spacing: -0.02em;
}

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

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

.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);
}

.btn-primary {
    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;
    display: inline-block;
    text-decoration: none;
}

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

.btn-secondary {
    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;
    display: inline-block;
    text-decoration: none;
}

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

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

.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-ink);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

/* HERO */
.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 {}

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

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

.hero-sub {
    font-size: 16px;
    font-weight: 400;
    color: var(--color-body);
    line-height: 1.6;
    margin-bottom: var(--spacing-xl);
    max-width: 480px;
}

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

.hero-image {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* SIGNATURE CARDS */
.signature-coral {
    background: var(--color-signature-coral);
    color: var(--color-on-primary);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
}

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

.signature-dark {
    background: var(--color-surface-dark);
    color: var(--color-on-primary);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
}

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

.card-section {
    padding: var(--spacing-section) 0;
    background: var(--color-canvas);
}

.cards-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.signature-card-title {
    font-size: 32px;
    font-weight: 400;
    line-height: 1.2;
    color: inherit;
    margin-bottom: var(--spacing-lg);
}

.signature-card-body {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.6;
    color: inherit;
    margin-bottom: var(--spacing-xl);
    opacity: 0.88;
}

.btn-secondary-on-dark {
    background: var(--color-canvas);
    color: var(--color-ink);
    font-size: 16px;
    font-weight: 500;
    padding: 16px 24px;
    border-radius: var(--rounded-lg);
    border: none;
    display: inline-block;
    text-decoration: none;
    cursor: pointer;
}

.btn-secondary-on-dark:hover { color: var(--color-ink); opacity: 0.9; }

/* 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);
    overflow: hidden;
    border: 1px solid var(--color-hairline);
}

.article-card-img {
    aspect-ratio: 16/9;
    overflow: hidden;
}

.article-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.article-card:hover .article-card-img img { transform: scale(1.03); }

.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-meta {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.016em;
    color: var(--color-muted);
    margin-top: var(--spacing-sm);
}

.article-card-excerpt {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
    margin-top: var(--spacing-xs);
}

.article-card-title a { color: var(--color-ink); }
.article-card-title a:hover { color: var(--color-link); }

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

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

.section-lead {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.6;
    max-width: 620px;
    margin-bottom: var(--spacing-xxl);
}

/* 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);
    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-title {
    font-size: 16px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-ink);
    margin-bottom: var(--spacing-xs);
}

.demo-card-text {
    font-size: 14px;
    color: var(--color-body);
    line-height: 1.5;
}

.demo-card-img {
    border-radius: var(--rounded-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
    aspect-ratio: 4/3;
}

.demo-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

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

.cta-band-sub {
    font-size: 16px;
    color: var(--color-body);
    margin-bottom: var(--spacing-xl);
}

/* CONTACT FORM */
.form-section {
    background: var(--color-surface-soft);
    padding: var(--spacing-section) 0;
}

.form-wrapper {
    max-width: 560px;
    margin: 0 auto;
}

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

.form-sub {
    font-size: 14px;
    color: var(--color-body);
    margin-bottom: var(--spacing-xl);
}

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

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

.form-input {
    width: 100%;
    background: var(--color-canvas);
    color: var(--color-ink);
    font-size: 14px;
    font-family: var(--font-family);
    border-radius: var(--rounded-sm);
    padding: 12px 16px;
    height: 44px;
    border: 1px solid var(--color-hairline);
    outline: none;
}

.form-input:focus { border-color: var(--color-info-border); }

.form-btn {
    width: 100%;
    margin-top: var(--spacing-sm);
}

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

.article-hero-tag {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: var(--spacing-lg);
}

.article-hero h1 {
    font-size: 40px;
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-ink);
    margin-bottom: var(--spacing-lg);
    max-width: 760px;
}

.article-hero-meta {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.016em;
    color: var(--color-muted);
    margin-bottom: var(--spacing-xl);
}

.article-hero-img {
    border-radius: var(--rounded-md);
    overflow: hidden;
    aspect-ratio: 16/6;
    margin-bottom: var(--spacing-section);
}

.article-hero-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.article-body {
    max-width: 720px;
}

.article-body h2 {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.35;
    letter-spacing: 0.0075em;
    color: var(--color-ink);
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-md);
}

.article-body h3 {
    font-size: 20px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-ink);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.article-body p {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.7;
    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: 16px;
    color: var(--color-body);
    line-height: 1.7;
    margin-bottom: var(--spacing-xs);
}

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

.article-body figure {
    margin: var(--spacing-xl) 0;
    border-radius: var(--rounded-md);
    overflow: hidden;
}

.article-body figure img {
    width: 100%;
    height: auto;
    border-radius: var(--rounded-md);
}

.article-body figcaption {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: var(--spacing-xs);
}

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

.article-sidebar {
    position: sticky;
    top: 80px;
}

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

.sidebar-card-title {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-md);
}

.sidebar-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.sidebar-links li a {
    font-size: 14px;
    color: var(--color-link);
    line-height: 1.4;
}

.sidebar-links li a:hover { color: var(--color-link-active); }

/* PAGES (ABOUT / PRIVACY / TERMS) */
.page-hero {
    padding: var(--spacing-section) 0 var(--spacing-xl);
    background: var(--color-canvas);
}

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

.page-hero-sub {
    font-size: 16px;
    color: var(--color-body);
    max-width: 620px;
}

.page-body {
    max-width: 760px;
    padding-bottom: var(--spacing-section);
}

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

.page-body h3 {
    font-size: 18px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-ink);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.page-body p {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.page-body ul {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.page-body li {
    font-size: 16px;
    color: var(--color-body);
    line-height: 1.7;
    margin-bottom: var(--spacing-xs);
}

.page-date {
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.016em;
    color: var(--color-muted);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
}

/* ABOUT */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: center;
    margin-bottom: var(--spacing-section);
}

.about-img {
    border-radius: var(--rounded-md);
    overflow: hidden;
    aspect-ratio: 4/3;
}

.about-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 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 1fr 1fr 1fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand-name {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: var(--spacing-sm);
}

.footer-brand-name span { color: var(--color-signature-coral); }

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

.footer-contact {
    font-size: 13px;
    color: var(--color-muted);
    line-height: 1.8;
}

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

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

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

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

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

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

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

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

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

/* COOKIE BANNER */
#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    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);
    flex-wrap: wrap;
    border-top: 1px solid #2a3040;
}

#cookie-banner p {
    font-size: 14px;
    line-height: 1.5;
    color: rgba(255,255,255,0.85);
    flex: 1;
    min-width: 200px;
}

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

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

.btn-cookie-accept {
    background: var(--color-link);
    color: var(--color-on-primary);
    font-size: 13.12px;
    font-weight: 600;
    padding: 12px 10px;
    border-radius: var(--rounded-xs);
    border: none;
    cursor: pointer;
    white-space: nowrap;
}

.btn-cookie-reject {
    background: transparent;
    color: rgba(255,255,255,0.7);
    font-size: 13.12px;
    font-weight: 600;
    padding: 12px 10px;
    border-radius: var(--rounded-xs);
    border: 1px solid rgba(255,255,255,0.3);
    cursor: pointer;
    white-space: nowrap;
}

/* BREADCRUMB */
.breadcrumb {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-lg);
}

.breadcrumb a { color: var(--color-muted); }
.breadcrumb a:hover { color: var(--color-link); }
.breadcrumb span { margin: 0 6px; }

/* DISCLAIMER */
.disclaimer {
    background: var(--color-surface-soft);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-sm);
    padding: var(--spacing-md);
    font-size: 13px;
    color: var(--color-muted);
    line-height: 1.5;
    margin-bottom: var(--spacing-lg);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .demo-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
}

@media (max-width: 768px) {
    .container { padding: 0 var(--spacing-md); }
    .section { padding: 64px 0; }
    .hero-band .container { grid-template-columns: 1fr; }
    .hero-image { display: none; }
    .hero-h1 { font-size: 32px; }
    .articles-grid { grid-template-columns: 1fr; }
    .demo-grid { grid-template-columns: 1fr; }
    .cards-2col { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .about-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .nav-right .btn-secondary { display: none; }
    .nav-hamburger { display: flex; }
    .nav-mobile-open .nav-links {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--color-canvas);
        padding: var(--spacing-lg) var(--spacing-md);
        border-bottom: 1px solid var(--color-hairline);
        z-index: 99;
    }
    .footer-bottom { flex-direction: column; text-align: center; }
    .footer-legal-links { justify-content: center; }
    #cookie-banner { flex-direction: column; align-items: flex-start; }
    .signature-card-title { font-size: 24px; }
    .section-h2 { font-size: 24px; }
    .article-hero h1 { font-size: 28px; }
    .page-hero h1 { font-size: 28px; }
}