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

:root {
    --canvas: #f7f7f4;
    --canvas-soft: #fafaf7;
    --surface-card: #ffffff;
    --surface-strong: #e6e5e0;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --ink: #26251e;
    --body-color: #5a5852;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --primary: #f54e00;
    --primary-active: #d04200;
    --on-primary: #ffffff;
    --success: #1f8a65;
    --error: #cf2d56;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 9999px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--canvas);
    color: var(--body-color);
    font-size: 16px;
    line-height: 1.5;
}

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

h1 { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; line-height: 1.2; color: var(--ink); }
h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.325px; line-height: 1.25; color: var(--ink); }
h3 { font-size: 22px; font-weight: 400; letter-spacing: -0.11px; line-height: 1.3; color: var(--ink); }
h4 { font-size: 18px; font-weight: 600; line-height: 1.4; color: var(--ink); }
p { margin-bottom: 1rem; color: var(--body-color); }
p:last-child { margin-bottom: 0; }

.disclaimer-bar {
    background: var(--canvas-soft);
    border-bottom: 1px solid var(--hairline-soft);
    padding: 8px 0;
}
.disclaimer-bar p {
    font-size: 12px;
    color: var(--muted);
    text-align: center;
    margin: 0;
}

.site-nav {
    background: var(--canvas);
    height: 64px;
    border-bottom: 1px solid var(--hairline);
    position: sticky;
    top: 0;
    z-index: 100;
}
.site-nav .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-logo {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    flex-shrink: 0;
}
.nav-logo span { color: var(--primary); }
.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}
.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--body-color);
    transition: color 0.15s;
    white-space: nowrap;
}
.nav-links a:hover { color: var(--ink); }
.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: 1px;
}

.hero {
    padding: 80px 0;
    border-bottom: 1px solid var(--hairline);
}
.hero-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}
.hero h1 { margin-bottom: 20px; max-width: 760px; }
.hero-subtitle {
    font-size: 18px;
    color: var(--body-color);
    max-width: 560px;
    margin-bottom: 0;
    line-height: 1.55;
}
.hero-image {
    margin-top: 48px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
}
.hero-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.section { padding: 80px 0; }
.section + .section { border-top: 1px solid var(--hairline); }
.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 32px;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.article-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color 0.15s;
    display: flex;
    flex-direction: column;
}
.article-card:hover { border-color: var(--hairline-strong); }
.article-card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.article-card-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.article-card-category {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
}
.article-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.35;
    margin-bottom: 10px;
    letter-spacing: -0.1px;
}
.article-card h3 a { color: inherit; }
.article-card h3 a:hover { color: var(--primary); }
.article-card p {
    font-size: 14px;
    color: var(--body-color);
    line-height: 1.55;
    margin-bottom: 16px;
    flex: 1;
}
.article-card-meta {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 16px;
}
.read-link {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    border-bottom: 1px solid var(--hairline-strong);
    padding-bottom: 1px;
    transition: border-color 0.15s, color 0.15s;
    align-self: flex-start;
}
.read-link:hover { color: var(--primary); border-color: var(--primary); }

.article-header {
    padding: 64px 0 48px;
    border-bottom: 1px solid var(--hairline);
}
.article-header .article-category { margin-bottom: 16px; }
.article-category {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
}
.article-header h1 { max-width: 800px; margin-bottom: 20px; }
.article-summary {
    font-size: 18px;
    color: var(--body-color);
    max-width: 640px;
    margin-bottom: 24px;
    line-height: 1.55;
}
.article-meta { font-size: 13px; color: var(--muted); }
.article-meta span + span::before { content: ' · '; }

.article-layout {
    padding: 64px 0;
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 64px;
    align-items: start;
}
.article-body h2 {
    margin-top: 40px;
    margin-bottom: 16px;
}
.article-body h2:first-child { margin-top: 0; }
.article-body h3 {
    margin-top: 28px;
    margin-bottom: 12px;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: -0.05px;
}
.article-body p { margin-bottom: 20px; line-height: 1.7; }
.article-body ul, .article-body ol {
    margin-bottom: 20px;
    padding-left: 24px;
}
.article-body li {
    margin-bottom: 8px;
    color: var(--body-color);
    line-height: 1.6;
}
.article-featured-image {
    width: 100%;
    border-radius: var(--radius-lg);
    margin-bottom: 40px;
    border: 1px solid var(--hairline);
    height: 400px;
    object-fit: cover;
}
.article-inline-image {
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    margin: 32px 0;
    width: 100%;
    height: 280px;
    object-fit: cover;
}
.article-refs {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--hairline);
}
.article-refs h4 { margin-bottom: 16px; }
.article-refs ul { list-style: none; padding: 0; }
.article-refs li { margin-bottom: 8px; }
.article-refs a {
    font-size: 14px;
    color: var(--body-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}
.article-refs a:hover { color: var(--ink); }

.article-sidebar { }
.sidebar-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}
.sidebar-card h4 { margin-bottom: 12px; font-size: 14px; }
.sidebar-card p { font-size: 14px; margin-bottom: 0; }
.sidebar-card ul { list-style: none; padding: 0; margin: 0; }
.sidebar-card li { margin-bottom: 8px; font-size: 14px; color: var(--body-color); }
.sidebar-card li::before { content: '—'; margin-right: 6px; color: var(--muted); }

.related-links { list-style: none !important; padding: 0 !important; }
.related-links li { margin-bottom: 8px !important; }
.related-links li::before { content: none !important; }
.related-links a { font-size: 14px; color: var(--body-color); text-decoration: underline; text-underline-offset: 2px; }
.related-links a:hover { color: var(--ink); }

.info-box {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--surface-strong);
    border-radius: var(--radius-lg);
    padding: 20px 24px;
    margin: 28px 0;
}
.info-box h4 { margin-bottom: 10px; font-size: 14px; }
.info-box p { font-size: 14px; margin-bottom: 0; }

.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 48px 0 32px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-brand-name {
    font-size: 15px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 10px;
    display: block;
}
.footer-brand-name span { color: var(--primary); }
.footer-brand p {
    font-size: 13px;
    color: var(--muted);
    max-width: 240px;
    line-height: 1.55;
}
.footer-col h5 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}
.footer-col ul { list-style: none; padding: 0; }
.footer-col li { margin-bottom: 8px; }
.footer-col a {
    font-size: 14px;
    color: var(--body-color);
    transition: color 0.15s;
}
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
    border-top: 1px solid var(--hairline);
    padding-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom p { font-size: 13px; color: var(--muted); margin: 0; }
.footer-bottom a { color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
.footer-bottom a:hover { color: var(--ink); }

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    z-index: 999;
    flex-wrap: wrap;
}
.cookie-banner.hidden { display: none; }
.cookie-banner p {
    font-size: 14px;
    color: var(--canvas);
    margin: 0;
    flex: 1;
    min-width: 200px;
    line-height: 1.5;
}
.cookie-banner a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--radius-md);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    height: 40px;
    transition: background 0.15s;
}
.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject {
    background: transparent;
    color: var(--canvas);
    border: 1px solid rgba(247,247,244,0.3);
    border-radius: var(--radius-md);
    padding: 10px 18px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    height: 40px;
    transition: border-color 0.15s;
}
.btn-cookie-reject:hover { border-color: rgba(247,247,244,0.6); }

.form-section { padding: 80px 0; border-top: 1px solid var(--hairline); }
.contact-form { max-width: 560px; }
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 6px;
}
.form-control {
    width: 100%;
    background: var(--surface-card);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-size: 16px;
    font-family: inherit;
    height: 44px;
    outline: none;
    transition: border-color 0.15s;
}
.form-control:focus { border-color: var(--ink); }
.form-control.error { border-color: var(--error); }
textarea.form-control {
    height: auto;
    min-height: 120px;
    resize: vertical;
}
.form-error {
    font-size: 13px;
    color: var(--error);
    margin-top: 4px;
    display: none;
}
.form-error.visible { display: block; }
.btn-submit {
    background: var(--ink);
    color: var(--canvas);
    border: none;
    border-radius: var(--radius-md);
    padding: 12px 24px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    height: 44px;
    cursor: pointer;
    transition: opacity 0.15s;
}
.btn-submit:hover { opacity: 0.85; }
.btn-submit:disabled { opacity: 0.5; cursor: not-allowed; }
.form-success {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    text-align: center;
    display: none;
}
.form-success.visible { display: block; }
.form-success p { color: var(--success); font-weight: 500; margin: 0; font-size: 16px; }

.page-header {
    padding: 64px 0 48px;
    border-bottom: 1px solid var(--hairline);
}
.page-header h1 { margin-bottom: 16px; }
.page-header .page-lead {
    font-size: 18px;
    color: var(--body-color);
    max-width: 560px;
    margin: 0;
    line-height: 1.55;
}
.page-content {
    padding: 64px 0;
    max-width: 800px;
}
.page-content h2 { margin-top: 40px; margin-bottom: 16px; }
.page-content h2:first-child { margin-top: 0; }
.page-content p { line-height: 1.7; margin-bottom: 16px; }
.page-content ul, .page-content ol { padding-left: 24px; margin-bottom: 16px; }
.page-content li { margin-bottom: 6px; line-height: 1.6; color: var(--body-color); }
.page-content .updated {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 40px;
    display: block;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: start;
    padding: 64px 0;
}
.about-image {
    border-radius: var(--radius-lg);
    border: 1px solid var(--hairline);
    width: 100%;
    height: 380px;
    object-fit: cover;
}
.about-text h2 { margin-bottom: 16px; }
.about-text p { line-height: 1.7; }

@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .article-layout { grid-template-columns: 1fr; gap: 40px; }
    .article-sidebar { display: none; }
}
@media (max-width: 768px) {
    h1 { font-size: 28px; }
    h2 { font-size: 22px; }
    .hero { padding: 48px 0; }
    .hero-subtitle { font-size: 16px; }
    .hero-image img { height: 240px; }
    .section { padding: 48px 0; }
    .articles-grid { grid-template-columns: 1fr; }
    .nav-links { display: none; }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        padding: 16px 24px 24px;
        gap: 16px;
    }
    .nav-hamburger { display: flex; }
    .footer-grid { grid-template-columns: 1fr; gap: 24px; }
    .about-grid { grid-template-columns: 1fr; gap: 32px; }
    .cookie-banner { flex-direction: column; align-items: flex-start; }
    .article-featured-image { height: 240px; }
    .article-inline-image { height: 200px; }
    .about-image { height: 240px; }
}
@media (max-width: 640px) {
    .footer-bottom { flex-direction: column; gap: 8px; }
    .article-header { padding: 40px 0 32px; }
    .page-header { padding: 40px 0 32px; }
}