@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
:root {
    --canvas: #f7f7f4;
    --canvas-soft: #fafaf7;
    --surface-card: #ffffff;
    --surface-strong: #e6e5e0;
    --primary: #f54e00;
    --primary-active: #d04200;
    --ink: #26251e;
    --body: #5a5852;
    --body-strong: #26251e;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --on-primary: #ffffff;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --semantic-success: #1f8a65;
    --semantic-error: #cf2d56;
    --rounded-xs: 4px;
    --rounded-sm: 6px;
    --rounded-md: 8px;
    --rounded-lg: 12px;
    --rounded-xl: 16px;
    --rounded-pill: 9999px;
}
html { font-size: 16px; scroll-behavior: smooth; }
body {
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: var(--canvas);
    color: var(--body);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}
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; }
.top-nav {
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}
.top-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}
.nav-logo {
    font-size: 17px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    line-height: 1;
}
.nav-logo span { color: var(--primary); }
.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}
.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--muted);
    line-height: 1.4;
    transition: color 0.15s;
}
.nav-links a:hover, .nav-links a.active { 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: 2px;
    transition: all 0.2s;
}
.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: 20px;
}
.hero h1 {
    font-size: 72px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -2.16px;
    color: var(--ink);
    max-width: 800px;
    margin-bottom: 24px;
}
.hero-sub {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--body);
    max-width: 560px;
    margin-bottom: 40px;
}
.hero-meta {
    font-size: 13px;
    color: var(--muted);
    margin-top: 16px;
}
.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}
.section-title {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 16px;
}
.section-sub {
    font-size: 16px;
    color: var(--body);
    line-height: 1.5;
    max-width: 540px;
}
.articles-section { padding: 80px 0; }
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}
.article-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    transition: border-color 0.15s;
}
.article-card:hover { border-color: var(--hairline-strong); }
.article-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    background: var(--surface-strong);
}
.article-card-body { padding: 24px; }
.article-card-tag {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-strong);
    border-radius: var(--rounded-pill);
    padding: 4px 10px;
    margin-bottom: 12px;
}
.article-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.4;
    margin-bottom: 10px;
}
.article-card p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    margin-bottom: 16px;
}
.article-card-date {
    font-size: 13px;
    color: var(--muted-soft);
}
.featured-section {
    padding: 80px 0;
    border-top: 1px solid var(--hairline);
}
.featured-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-top: 48px;
}
.featured-img {
    width: 100%;
    height: 360px;
    object-fit: cover;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--hairline);
}
.featured-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    line-height: 1.25;
    color: var(--ink);
    margin-bottom: 16px;
}
.featured-content p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--body);
    margin-bottom: 16px;
}
.text-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    border-bottom: 1px solid transparent;
    transition: border-color 0.15s;
}
.text-link:hover { color: var(--primary); border-color: var(--primary); }
.topics-section {
    padding: 80px 0;
    border-top: 1px solid var(--hairline);
    background: var(--canvas-soft);
}
.topics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 48px;
}
.topic-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 24px;
}
.topic-card h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}
.topic-card p { font-size: 14px; color: var(--body); line-height: 1.5; }
.contact-section {
    padding: 80px 0;
    border-top: 1px solid var(--hairline);
}
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-top: 48px;
    align-items: start;
}
.form-wrap { max-width: 480px; }
form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
label {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
}
input[type="text"],
input[type="email"],
input[type="tel"],
textarea {
    background: var(--surface-card);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    height: 44px;
    font-size: 16px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.15s;
    width: 100%;
}
textarea { height: auto; min-height: 120px; resize: vertical; }
input:focus, textarea:focus { border-color: var(--ink); }
.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    transition: background 0.15s;
    align-self: flex-start;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary:hover { background: var(--primary-active); }
.btn-primary:disabled { opacity: 0.7; cursor: not-allowed; }
.form-message {
    margin-top: 12px;
    font-size: 14px;
    color: var(--semantic-success);
    display: none;
}
.form-message.visible { display: block; }
.contact-info h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 16px;
}
.contact-info p {
    font-size: 15px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 12px;
}
.article-header {
    padding: 80px 0 48px;
    border-bottom: 1px solid var(--hairline);
    max-width: 760px;
}
.article-header h1 {
    font-size: 48px;
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -1.2px;
    color: var(--ink);
    margin-bottom: 20px;
}
.article-header .article-meta {
    font-size: 14px;
    color: var(--muted);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}
.article-body {
    padding: 48px 0 80px;
    max-width: 760px;
}
.article-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    line-height: 1.25;
    color: var(--ink);
    margin: 40px 0 16px;
}
.article-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 12px;
}
.article-body p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--body);
    margin-bottom: 20px;
}
.article-body ul, .article-body ol {
    padding-left: 24px;
    margin-bottom: 20px;
    color: var(--body);
}
.article-body li {
    font-size: 16px;
    line-height: 1.7;
    margin-bottom: 6px;
}
.article-body a { color: var(--primary); }
.article-body a:hover { text-decoration: underline; }
.article-img {
    width: 100%;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--hairline);
    margin: 32px 0 8px;
}
.img-caption {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 32px;
}
.article-body blockquote {
    border-left: 3px solid var(--hairline-strong);
    padding: 12px 20px;
    margin: 24px 0;
    background: var(--canvas-soft);
    border-radius: 0 var(--rounded-sm) var(--rounded-sm) 0;
}
.article-body blockquote p {
    font-size: 16px;
    color: var(--ink);
    margin: 0;
    font-style: italic;
}
.article-ref {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 20px 24px;
    margin-top: 48px;
}
.article-ref h4 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}
.article-ref ul { padding-left: 0; list-style: none; margin: 0; }
.article-ref li {
    font-size: 13px;
    color: var(--body);
    margin-bottom: 6px;
}
.article-ref a { color: var(--primary); }
.page-header {
    padding: 80px 0 40px;
    border-bottom: 1px solid var(--hairline);
    max-width: 760px;
}
.page-header h1 {
    font-size: 48px;
    font-weight: 400;
    letter-spacing: -1.2px;
    line-height: 1.15;
    color: var(--ink);
    margin-bottom: 16px;
}
.page-header p { font-size: 16px; color: var(--body); line-height: 1.6; }
.page-body {
    padding: 48px 0 80px;
    max-width: 760px;
}
.page-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    line-height: 1.25;
    color: var(--ink);
    margin: 40px 0 14px;
}
.page-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 24px 0 10px;
}
.page-body p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--body);
    margin-bottom: 16px;
}
.page-body ul {
    padding-left: 22px;
    margin-bottom: 16px;
    color: var(--body);
}
.page-body li { font-size: 15px; line-height: 1.7; margin-bottom: 4px; }
.page-body a { color: var(--primary); }
.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px 0 48px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 48px;
}
.footer-brand p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
    margin-top: 12px;
    max-width: 240px;
}
.footer-col h4 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--ink);
    margin-bottom: 16px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a {
    font-size: 14px;
    color: var(--body);
    transition: color 0.15s;
}
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
    border-top: 1px solid var(--hairline);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}
.footer-bottom p { font-size: 14px; color: var(--muted); }
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--ink); }
.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--ink);
    color: var(--canvas);
    border-radius: var(--rounded-lg);
    padding: 20px 24px;
    max-width: 560px;
    width: calc(100% - 48px);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    z-index: 200;
    box-shadow: 0 4px 24px rgba(0,0,0,0.12);
}
.cookie-banner.hidden { display: none; }
.cookie-text { font-size: 14px; color: var(--canvas); line-height: 1.5; }
.cookie-text a { color: #f7f7f4; text-decoration: underline; }
.cookie-actions { display: flex; gap: 8px; flex-shrink: 0; }
.btn-cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    transition: background 0.15s;
    white-space: nowrap;
}
.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject {
    background: transparent;
    color: var(--canvas-soft);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--rounded-md);
    border: 1px solid rgba(255,255,255,0.25);
    cursor: pointer;
    transition: border-color 0.15s;
    white-space: nowrap;
}
.btn-cookie-reject:hover { border-color: rgba(255,255,255,0.5); }
.breadcrumb {
    padding: 16px 0;
    border-bottom: 1px solid var(--hairline-soft);
    font-size: 13px;
    color: var(--muted);
}
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { margin: 0 6px; }
.disclaimer {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-md);
    padding: 16px 20px;
    margin-top: 40px;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.6;
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
}
@media (max-width: 1024px) {
    .hero h1 { font-size: 56px; letter-spacing: -1.4px; }
    .articles-grid { grid-template-columns: 1fr 1fr; }
    .topics-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .featured-grid { gap: 32px; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .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: 20px 24px;
        gap: 16px;
    }
    .hero h1 { font-size: 40px; letter-spacing: -1px; }
    .hero-sub { font-size: 16px; }
    .articles-grid { grid-template-columns: 1fr; }
    .topics-grid { grid-template-columns: 1fr; }
    .featured-grid { grid-template-columns: 1fr; }
    .featured-img { height: 240px; }
    .form-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .section-title { font-size: 28px; }
    .article-header h1 { font-size: 36px; }
    .page-header h1 { font-size: 36px; }
}
@media (max-width: 640px) {
    .hero { padding: 48px 0; }
    .hero h1 { font-size: 32px; }
    .articles-section, .featured-section, .topics-section, .contact-section { padding: 48px 0; }
    .footer-grid { grid-template-columns: 1fr; }
    .cookie-banner { flex-direction: column; align-items: flex-start; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}