*, *::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;
    --color-signature-yellow: #f4d35e;
    --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-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --max-width: 1280px;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-main);
    font-size: 14px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-body);
    background: var(--color-canvas);
}

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

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

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xxl);
    height: 64px;
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-ink);
    letter-spacing: -0.3px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin-left: auto;
}

.nav-link {
    font-size: 14px;
    font-weight: 400;
    color: var(--color-body);
    text-decoration: none;
    transition: color 0.15s;
}

.nav-link.active,
.nav-link:hover { color: 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: all 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;
    transition: background 0.15s;
    min-height: 48px;
}

.btn-primary:hover { 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;
    transition: border-color 0.15s;
    min-height: 48px;
}

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

.btn-secondary--on-dark {
    background: var(--color-canvas);
    color: var(--color-ink);
    border-color: transparent;
}

.btn-legal {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    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;
    min-height: 44px;
}

.btn-legal--reject {
    background: transparent;
    color: var(--color-muted);
    border: 1px solid var(--color-hairline);
}

.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-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: var(--spacing-md);
}

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

.hero-sub {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: var(--spacing-xl);
    max-width: 480px;
}

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

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

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

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

.section-band--soft {
    background: var(--color-surface-soft);
}

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

.section-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    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-body);
    max-width: 600px;
}

.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;
    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;
}

.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;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    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: inherit;
    text-decoration: none;
}

.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);
    margin-top: auto;
}

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

.signature-coral-card .section-label { color: rgba(255,255,255,0.65); }
.signature-coral-card .section-title { color: var(--color-on-primary); }
.signature-coral-card .section-sub { color: rgba(255,255,255,0.8); }

.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 .section-label { color: rgba(255,255,255,0.65); }
.signature-forest-card .section-title { color: var(--color-on-primary); }
.signature-forest-card .section-sub { color: rgba(255,255,255,0.8); }

.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 .section-title { color: var(--color-on-primary); }
.hero-card-dark .section-sub { color: rgba(255,255,255,0.75); }

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

.cta-band-light .section-title { color: var(--color-ink); }

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

.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);
    overflow: hidden;
}

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

.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: 1.5;
}

.demo-card__img {
    border-radius: var(--rounded-md);
    overflow: hidden;
    margin-top: var(--spacing-md);
    aspect-ratio: 4/3;
}

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

.contact-form {
    background: var(--color-surface-soft);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    max-width: 600px;
}

.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-main);
    padding: 12px 16px;
    border-radius: var(--rounded-sm);
    border: 1px solid var(--color-hairline);
    height: 44px;
    outline: none;
    transition: border-color 0.15s;
}

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

.article-content {
    max-width: 720px;
    margin: 0 auto;
}

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

.article-header .container { max-width: 960px; }

.article-breadcrumb {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-md);
}

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

.article-title {
    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 {
    border-radius: var(--rounded-md);
    overflow: hidden;
    aspect-ratio: 16/9;
    margin-bottom: var(--spacing-xxl);
}

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

.article-body {
    padding-bottom: var(--spacing-section);
}

.article-body h2 {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.35;
    color: var(--color-ink);
    margin: var(--spacing-xxl) 0 var(--spacing-md);
    letter-spacing: 0.12px;
}

.article-body h3 {
    font-size: 20px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.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-md) 0 var(--spacing-md) var(--spacing-xl);
}

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

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

.article-body strong { font-weight: 500; color: var(--color-ink); }

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

.article-inline-img img { width: 100%; }

.article-inline-img figcaption {
    font-size: 13px;
    color: var(--color-muted);
    padding: var(--spacing-xs) 0;
    font-style: italic;
}

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

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

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xxl);
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xxl);
    padding-bottom: var(--spacing-xxl);
}

.footer-logo {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-ink);
    text-decoration: none;
    display: block;
    margin-bottom: var(--spacing-md);
}

.footer-tagline {
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

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

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

.footer-nav {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

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

.footer-col a {
    font-size: 14px;
    color: var(--color-muted);
    text-decoration: none;
}

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

.footer-legal {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-xxl);
    border-top: 1px solid var(--color-hairline);
}

.footer-legal p {
    font-size: 13px;
    color: var(--color-muted);
    line-height: 1.6;
}

.cookie-banner {
    position: fixed;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--color-surface-dark);
    color: var(--color-on-primary);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    z-index: 999;
    box-shadow: 0 4px 24px rgba(0,0,0,0.25);
}

.cookie-banner.hidden { display: none; }

.cookie-banner p {
    font-size: 14px;
    color: rgba(255,255,255,0.85);
    flex: 1;
}

.cookie-banner a { color: #7cb9ff; }

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

.page-header {
    padding: var(--spacing-section) 0 var(--spacing-xxl);
    background: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
}

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

.page-meta {
    font-size: 13px;
    color: var(--color-muted);
}

.page-content {
    padding: var(--spacing-section) 0;
    max-width: 720px;
    margin: 0 auto;
}

.page-content h2 {
    font-size: 24px;
    font-weight: 400;
    line-height: 1.35;
    color: var(--color-ink);
    margin: var(--spacing-xxl) 0 var(--spacing-md);
    letter-spacing: 0.12px;
}

.page-content h3 {
    font-size: 20px;
    font-weight: 400;
    color: var(--color-ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}

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

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

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

.page-content a { color: var(--color-link); }
.page-content strong { font-weight: 500; color: var(--color-ink); }

@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .demo-grid { grid-template-columns: repeat(2, 1fr); }
    .hero-band .container { grid-template-columns: 1fr; }
    .hero-image-wrap { display: none; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-nav { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root { --spacing-section: 64px; }
    .container { padding: 0 var(--spacing-md); }
    .nav-inner { padding: 0 var(--spacing-md); }
    .nav-hamburger { display: flex; }
    .nav-menu {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-canvas);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-lg);
        border-top: 1px solid var(--color-hairline);
        z-index: 99;
    }
    .nav-menu.open { display: flex; }
    .nav-link { font-size: 18px; }
    .articles-grid { grid-template-columns: 1fr; }
    .demo-grid { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    .hero-title { font-size: 28px; }
    .article-title { font-size: 28px; }
    .section-title { font-size: 24px; }
    .page-title { font-size: 28px; }
    .signature-coral-card, .signature-forest-card, .hero-card-dark { padding: var(--spacing-xl); }
    .contact-form { padding: var(--spacing-xl); }
    .cookie-banner { flex-direction: column; align-items: flex-start; }
    .footer-inner { padding: 0 var(--spacing-md) var(--spacing-xl); }
    .footer-legal { padding: var(--spacing-lg) var(--spacing-md); }
}