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

:root {
    --canvas: #f5f1ec;
    --surface-1: #ffffff;
    --surface-2: #ede8e2;
    --hairline: #d3cec6;
    --hairline-soft: #e0dbd3;
    --inverse-canvas: #111111;
    --ink: #111111;
    --ink-muted: #626260;
    --ink-subtle: #7b7b78;
    --ink-tertiary: #9c9fa5;
    --inverse-ink: #ffffff;
    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-xxl: 24px;
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 96px;
    --max-width: 1280px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
    font-family: 'Inter', ui-sans-serif, system-ui, -apple-system, sans-serif;
    background-color: var(--canvas);
    color: var(--ink);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    letter-spacing: 0;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }
ul, ol { list-style: none; }

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

.top-nav {
    background: var(--canvas);
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--hairline);
}
.top-nav .nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.nav-logo {
    font-weight: 500;
    font-size: 16px;
    letter-spacing: -0.3px;
    color: var(--ink);
    text-decoration: none;
    flex-shrink: 0;
}
.nav-logo:hover { text-decoration: none; }
.nav-links {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}
.nav-links a {
    font-size: 14px;
    font-weight: 400;
    color: var(--ink-muted);
    transition: color 0.15s;
}
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.nav-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    flex-direction: column;
    gap: 5px;
}
.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: all 0.2s;
}
.nav-mobile-menu {
    display: none;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: var(--spacing-md) 0;
}
.nav-mobile-menu.open { display: block; }
.nav-mobile-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-xl);
    font-size: 14px;
    color: var(--ink-muted);
    transition: color 0.15s;
}
.nav-mobile-menu a:hover { color: var(--ink); text-decoration: none; }

.eyebrow {
    font-size: 14px;
    font-weight: 500;
    line-height: 1.30;
    letter-spacing: 0;
    color: var(--ink-muted);
    display: block;
    margin-bottom: var(--spacing-sm);
}
.display-xl { font-size: 72px; font-weight: 500; line-height: 1.05; letter-spacing: -2px; }
.display-lg { font-size: 56px; font-weight: 500; line-height: 1.10; letter-spacing: -1.4px; }
.display-md { font-size: 40px; font-weight: 500; line-height: 1.15; letter-spacing: -0.8px; }
.headline { font-size: 28px; font-weight: 500; line-height: 1.20; letter-spacing: -0.5px; }
.card-title { font-size: 22px; font-weight: 500; line-height: 1.25; letter-spacing: -0.3px; }
.subhead { font-size: 20px; font-weight: 400; line-height: 1.40; letter-spacing: -0.2px; }
.body-lg { font-size: 18px; font-weight: 400; line-height: 1.50; letter-spacing: -0.1px; }
.body { font-size: 16px; font-weight: 400; line-height: 1.50; letter-spacing: 0; }
.body-sm { font-size: 14px; font-weight: 400; line-height: 1.50; letter-spacing: 0; }
.caption { font-size: 12px; font-weight: 400; line-height: 1.40; letter-spacing: 0; }

.btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 10px 18px;
    background: var(--ink);
    color: var(--inverse-ink);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.20;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    transition: opacity 0.15s;
    text-decoration: none;
    min-height: 40px;
}
.btn-primary:hover { opacity: 0.82; text-decoration: none; }
.btn-secondary {
    display: inline-flex;
    align-items: center;
    padding: 10px 18px;
    background: var(--surface-1);
    color: var(--ink);
    font-size: 15px;
    font-weight: 500;
    line-height: 1.20;
    border-radius: var(--rounded-md);
    border: 1px solid var(--hairline);
    cursor: pointer;
    transition: border-color 0.15s;
    text-decoration: none;
    min-height: 40px;
}
.btn-secondary:hover { border-color: var(--ink); text-decoration: none; }

.hero {
    padding: var(--spacing-section) 0;
}
.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}
.hero-text { }
.hero-text .eyebrow { margin-bottom: var(--spacing-md); }
.hero-text h1 { margin-bottom: var(--spacing-lg); }
.hero-text p {
    font-size: 18px;
    line-height: 1.6;
    color: var(--ink-muted);
    margin-bottom: var(--spacing-xl);
}
.hero-image {
    border-radius: var(--rounded-xl);
    overflow: hidden;
    border: 1px solid var(--hairline);
}
.hero-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.section { padding: var(--spacing-section) 0; }
.section-header { margin-bottom: var(--spacing-xxl); }
.section-header .eyebrow { margin-bottom: var(--spacing-sm); }
.section-header h2 { margin-bottom: var(--spacing-md); }
.section-header p { font-size: 18px; color: var(--ink-muted); max-width: 600px; }

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}
.card-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.article-card {
    background: var(--surface-1);
    border-radius: var(--rounded-lg);
    border: 1px solid var(--hairline);
    overflow: hidden;
    transition: box-shadow 0.15s;
    display: flex;
    flex-direction: column;
}
.article-card:hover { box-shadow: 0 2px 16px rgba(0,0,0,0.07); text-decoration: none; }
.article-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.article-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}
.article-card-body .eyebrow { margin-bottom: var(--spacing-xs); }
.article-card-body h3 {
    font-size: 20px;
    font-weight: 500;
    line-height: 1.30;
    letter-spacing: -0.3px;
    margin-bottom: var(--spacing-sm);
    color: var(--ink);
}
.article-card-body p {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.55;
    flex: 1;
    margin-bottom: var(--spacing-md);
}
.article-card-meta {
    font-size: 12px;
    color: var(--ink-tertiary);
    margin-top: auto;
}

.feature-card {
    background: var(--surface-1);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--hairline);
}
.feature-card-icon {
    width: 40px;
    height: 40px;
    background: var(--canvas);
    border-radius: var(--rounded-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    font-size: 20px;
}
.feature-card h3 {
    font-size: 17px;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--ink);
}
.feature-card p {
    font-size: 14px;
    color: var(--ink-muted);
    line-height: 1.55;
}

.article-page { }
.article-page-header {
    padding: var(--spacing-xxl) 0 var(--spacing-xl);
}
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 14px;
    color: var(--ink-muted);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}
.breadcrumb a { color: var(--ink-muted); transition: color 0.15s; }
.breadcrumb a:hover { color: var(--ink); text-decoration: none; }
.breadcrumb-sep { color: var(--ink-tertiary); }
.article-meta-bar {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    margin-bottom: var(--spacing-xxl);
    flex-wrap: wrap;
}
.article-meta-bar span {
    font-size: 13px;
    color: var(--ink-subtle);
}
.article-hero-img {
    border-radius: var(--rounded-xl);
    overflow: hidden;
    margin-bottom: var(--spacing-xxl);
    border: 1px solid var(--hairline);
}
.article-hero-img img {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
}
.article-body {
    max-width: 740px;
    margin: 0 auto;
}
.article-body h2 {
    font-size: 28px;
    font-weight: 500;
    line-height: 1.20;
    letter-spacing: -0.5px;
    margin: var(--spacing-xxl) 0 var(--spacing-md);
    color: var(--ink);
}
.article-body h3 {
    font-size: 22px;
    font-weight: 500;
    line-height: 1.25;
    letter-spacing: -0.3px;
    margin: var(--spacing-xl) 0 var(--spacing-sm);
    color: var(--ink);
}
.article-body p {
    font-size: 18px;
    line-height: 1.70;
    color: var(--ink);
    margin-bottom: var(--spacing-md);
}
.article-body ul, .article-body ol {
    list-style: disc;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}
.article-body ol { list-style: decimal; }
.article-body li {
    font-size: 18px;
    line-height: 1.65;
    color: var(--ink);
    margin-bottom: var(--spacing-xs);
}
.article-body a {
    color: var(--ink);
    text-decoration: underline;
}
.article-body a:hover { color: var(--ink-muted); }
.info-box {
    background: var(--surface-1);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}
.info-box .eyebrow { margin-bottom: var(--spacing-sm); }
.info-box p { font-size: 16px; line-height: 1.65; color: var(--ink-muted); margin: 0; }
.info-box ul { list-style: disc; padding-left: var(--spacing-xl); margin-top: var(--spacing-sm); }
.info-box ul li { font-size: 16px; line-height: 1.60; color: var(--ink-muted); }

.related-section {
    padding: var(--spacing-section) 0;
    border-top: 1px solid var(--hairline);
}

.contact-section-wrap {
    background: var(--surface-1);
    border-radius: var(--rounded-xl);
    border: 1px solid var(--hairline);
    padding: var(--spacing-xxl);
    max-width: 640px;
    margin: 0 auto;
}
.form-group { margin-bottom: var(--spacing-lg); }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    color: var(--ink);
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--surface-1);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-md);
    font-size: 16px;
    font-family: inherit;
    color: var(--ink);
    transition: border-color 0.15s;
    min-height: 44px;
    appearance: none;
    -webkit-appearance: none;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--ink);
}
.form-group textarea { min-height: 120px; resize: vertical; }
.form-message {
    display: none;
    padding: var(--spacing-md);
    background: var(--surface-2);
    border-radius: var(--rounded-md);
    font-size: 14px;
    color: var(--ink-muted);
    margin-top: var(--spacing-md);
}
.form-message.visible { display: block; }

#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--inverse-canvas);
    color: var(--inverse-ink);
    padding: var(--spacing-lg) var(--spacing-xl);
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    z-index: 200;
    flex-wrap: wrap;
}
#cookie-banner.show { display: flex; }
#cookie-banner p {
    font-size: 14px;
    color: #cccccc;
    flex: 1;
    min-width: 200px;
    margin: 0;
    line-height: 1.5;
}
#cookie-banner a { color: #ffffff; text-decoration: underline; }
.cookie-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}
.cookie-btn-accept {
    padding: 8px 16px;
    background: var(--inverse-ink);
    color: var(--inverse-canvas);
    border: none;
    border-radius: var(--rounded-md);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    min-height: 40px;
    font-family: inherit;
}
.cookie-btn-reject {
    padding: 8px 16px;
    background: transparent;
    color: var(--inverse-ink);
    border: 1px solid rgba(255,255,255,0.3);
    border-radius: var(--rounded-md);
    font-size: 14px;
    cursor: pointer;
    min-height: 40px;
    font-family: inherit;
}

.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 0 0;
}
.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
}
.footer-brand {
    font-weight: 500;
    font-size: 16px;
    margin-bottom: var(--spacing-sm);
    color: var(--ink);
    display: block;
}
.footer-desc {
    font-size: 14px;
    color: var(--ink-subtle);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}
.footer-col h4 {
    font-size: 12px;
    font-weight: 500;
    color: var(--ink-muted);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0;
}
.footer-col ul li { margin-bottom: var(--spacing-xs); }
.footer-col ul li a {
    font-size: 14px;
    color: var(--ink-subtle);
    transition: color 0.15s;
}
.footer-col ul li a:hover { color: var(--ink); text-decoration: none; }
.footer-bottom {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-top: var(--spacing-xxl);
    border-top: 1px solid var(--hairline-soft);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}
.footer-bottom p {
    font-size: 12px;
    color: var(--ink-subtle);
}

.page-header {
    padding: var(--spacing-xxl) 0;
    border-bottom: 1px solid var(--hairline);
}
.page-header h1 { margin-top: var(--spacing-sm); }
.page-content {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--spacing-section) var(--spacing-xl);
}
.page-content h2 {
    font-size: 28px;
    font-weight: 500;
    line-height: 1.20;
    letter-spacing: -0.5px;
    margin: var(--spacing-xxl) 0 var(--spacing-md);
    color: var(--ink);
}
.page-content h3 {
    font-size: 20px;
    font-weight: 500;
    margin: var(--spacing-xl) 0 var(--spacing-sm);
    color: var(--ink);
}
.page-content p, .page-content li {
    font-size: 16px;
    line-height: 1.75;
    color: var(--ink-muted);
    margin-bottom: var(--spacing-sm);
}
.page-content ul {
    list-style: disc;
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}
.page-content h2:first-child { margin-top: 0; }

.about-intro {
    font-size: 20px;
    line-height: 1.60;
    color: var(--ink-muted);
    max-width: 680px;
    margin-bottom: var(--spacing-section);
}
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
    margin: var(--spacing-section) 0;
}
.about-topics {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xxl);
}
.topic-chip {
    background: var(--surface-1);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 15px;
    font-weight: 500;
    color: var(--ink-muted);
    text-align: center;
}
.disclaimer-box {
    background: var(--surface-2);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    margin: var(--spacing-xxl) 0;
}
.disclaimer-box p {
    font-size: 14px;
    color: var(--ink-subtle);
    line-height: 1.65;
    margin: 0;
}

@media (max-width: 1024px) {
    .card-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .about-topics { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .container, .top-nav .nav-inner { padding: 0 var(--spacing-md); }
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .hero-inner { grid-template-columns: 1fr; }
    .hero { padding: var(--spacing-xxl) 0; }
    .hero-image { display: none; }
    .display-xl { font-size: 40px; letter-spacing: -1px; }
    .display-lg { font-size: 32px; letter-spacing: -0.8px; }
    .display-md { font-size: 28px; letter-spacing: -0.5px; }
    .headline { font-size: 24px; }
    .card-grid { grid-template-columns: 1fr; }
    .card-grid-2 { grid-template-columns: 1fr; }
    .section { padding: var(--spacing-xxl) 0; }
    .footer-inner { grid-template-columns: 1fr 1fr; gap: var(--spacing-xl); }
    .footer-bottom { flex-direction: column; gap: var(--spacing-sm); text-align: center; }
    .about-grid { grid-template-columns: 1fr; }
    .about-topics { grid-template-columns: 1fr 1fr; }
    #cookie-banner { flex-direction: column; align-items: flex-start; }
    .contact-section-wrap { padding: var(--spacing-lg); }
    .article-meta-bar { gap: var(--spacing-sm); }
    .page-content { padding: var(--spacing-xxl) var(--spacing-md); }
}
@media (max-width: 480px) {
    .display-xl { font-size: 32px; letter-spacing: -0.8px; }
    .display-md { font-size: 24px; }
    .site-footer { padding: var(--spacing-xxl) 0 0; }
    .footer-inner { grid-template-columns: 1fr; }
    .about-topics { grid-template-columns: 1fr; }
    .cookie-buttons { flex-wrap: wrap; }
    .article-body p, .article-body li { font-size: 16px; }
}