@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;
    --on-primary: #ffffff;
    --ink: #26251e;
    --body: #5a5852;
    --body-strong: #26251e;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --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 { scroll-behavior: smooth; }

body {
    background: var(--canvas);
    color: var(--body);
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
}

a { color: var(--ink); text-decoration: none; transition: color 0.15s; }
a:hover { color: var(--primary); }

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

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

/* TOP NAV */
.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: 100%;
}

.nav-wordmark {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
}

.nav-wordmark span { color: var(--primary); }

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--body);
    padding: 6px 12px;
    border-radius: var(--rounded-md);
    transition: color 0.15s, background 0.15s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--ink);
    background: var(--surface-strong);
}

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 8px;
}

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

/* MOBILE NAV */
.nav-mobile {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px 24px;
    z-index: 99;
}

.nav-mobile.open { display: block; }

.nav-mobile ul { list-style: none; display: flex; flex-direction: column; gap: 4px; }

.nav-mobile a {
    display: block;
    font-size: 15px;
    font-weight: 500;
    color: var(--body);
    padding: 10px 12px;
    border-radius: var(--rounded-md);
}

.nav-mobile a:hover { color: var(--ink); background: var(--surface-strong); }

/* HERO */
.hero {
    padding: 80px 0 64px;
    border-bottom: 1px solid var(--hairline);
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-strong);
    padding: 4px 10px;
    border-radius: var(--rounded-pill);
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 48px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--ink);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 32px;
    max-width: 480px;
}

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

.hero-image {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    aspect-ratio: 4/3;
}

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

/* SECTIONS */
.section { padding: 80px 0; }
.section-alt { background: var(--canvas-soft); }
.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: 12px;
}

.section-title {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 16px;
}

.section-desc {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    max-width: 600px;
}

/* CARDS GRID */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 48px;
}

.feature-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 24px;
}

.feature-card-icon {
    width: 40px;
    height: 40px;
    background: var(--surface-strong);
    border-radius: var(--rounded-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 16px;
    font-size: 18px;
}

.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 10px;
    line-height: 1.4;
}

.feature-card p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
}

/* ARTICLES GRID */
.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-image {
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

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

.article-card-body { padding: 20px; }

.article-card-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
}

.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: 1.6;
    margin-bottom: 16px;
}

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

.article-link {
    display: inline-block;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
    margin-top: 12px;
}

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

/* ARTICLE PAGE */
.article-page { padding: 64px 0 80px; }

.article-header { margin-bottom: 48px; }

.article-header .breadcrumb {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
}

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

.article-header h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 16px;
    max-width: 800px;
}

.article-header .article-meta {
    font-size: 13px;
    color: var(--muted);
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.article-featured-image {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    margin-bottom: 48px;
    max-height: 480px;
}

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

.article-layout {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 64px;
    align-items: start;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    line-height: 1.25;
    margin: 40px 0 16px;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 12px;
}

.article-content p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 20px;
}

.article-content ul, .article-content ol {
    padding-left: 24px;
    margin-bottom: 20px;
}

.article-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 8px;
}

.article-content .note-block {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: var(--rounded-md);
    padding: 16px 20px;
    margin: 28px 0;
}

.article-content .note-block p {
    margin-bottom: 0;
    font-size: 15px;
}

.article-content figure {
    margin: 32px 0;
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
}

.article-content figure img { width: 100%; }

.article-content figcaption {
    font-size: 13px;
    color: var(--muted);
    padding: 10px 16px;
    background: var(--canvas-soft);
}

.article-content .data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 14px;
}

.article-content .data-table th {
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    padding: 10px 12px;
    border-bottom: 2px solid var(--hairline);
}

.article-content .data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--hairline-soft);
    color: var(--body);
}

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

.sidebar-toc {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 20px;
    margin-bottom: 24px;
}

.sidebar-toc-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}

.sidebar-toc ul { list-style: none; }

.sidebar-toc li { margin-bottom: 8px; }

.sidebar-toc a {
    font-size: 14px;
    color: var(--body);
}

.sidebar-toc a:hover { color: var(--primary); }

.sidebar-related {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 20px;
}

.sidebar-related-title {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

.sidebar-related-item {
    border-top: 1px solid var(--hairline-soft);
    padding-top: 14px;
    margin-top: 14px;
}

.sidebar-related-item:first-child { border-top: none; padding-top: 0; margin-top: 0; }

.sidebar-related-item a {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    line-height: 1.4;
}

.sidebar-related-item a:hover { color: var(--primary); }

.sidebar-related-item span {
    display: block;
    font-size: 12px;
    color: var(--muted);
    margin-top: 4px;
}

/* CONTACT FORM */
.contact-section { padding: 80px 0; border-top: 1px solid var(--hairline); }

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-info h2 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 16px;
}

.contact-info p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 32px;
}

.contact-details { display: flex; flex-direction: column; gap: 16px; }

.contact-detail {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.contact-detail-icon {
    width: 36px;
    height: 36px;
    background: var(--surface-strong);
    border-radius: var(--rounded-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 16px;
}

.contact-detail-text { font-size: 14px; color: var(--body); line-height: 1.5; }
.contact-detail-text strong { color: var(--ink); font-size: 13px; font-weight: 600; display: block; margin-bottom: 2px; }

.contact-form-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: 32px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--rounded-md);
    padding: 11px 14px;
    height: 44px;
    font-size: 15px;
    color: var(--ink);
    font-family: inherit;
    transition: border-color 0.15s;
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--muted-soft); }

.form-group input:focus,
.form-group textarea:focus { border-color: var(--ink); }

.form-group textarea { height: auto; min-height: 120px; resize: vertical; }

.btn-submit {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--rounded-md);
    padding: 10px 20px;
    height: 44px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s;
    width: 100%;
}

.btn-submit:hover { background: var(--primary-active); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; }

.form-message {
    display: none;
    padding: 12px 16px;
    border-radius: var(--rounded-md);
    font-size: 14px;
    margin-top: 16px;
}

.form-message.success {
    display: block;
    background: #e6f4ee;
    color: var(--semantic-success);
    border: 1px solid #b8dece;
}

/* PAGE HEADER */
.page-header {
    padding: 64px 0 48px;
    border-bottom: 1px solid var(--hairline);
}

.page-header h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 12px;
}

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

.page-content { padding: 64px 0 80px; }

.page-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    line-height: 1.25;
    margin: 40px 0 16px;
}

.page-content h2:first-child { margin-top: 0; }

.page-content p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 16px;
    max-width: 720px;
}

.page-content ul {
    padding-left: 24px;
    margin-bottom: 16px;
    max-width: 720px;
}

.page-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 8px;
}

/* FOOTER */
.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: 48px;
    margin-bottom: 48px;
}

.footer-brand .nav-wordmark { font-size: 16px; margin-bottom: 12px; }

.footer-brand p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.6;
    max-width: 260px;
}

.footer-col h4 {
    font-size: 13px;
    font-weight: 600;
    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);
}

.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;
    gap: 16px;
}

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

.footer-bottom-links { display: flex; gap: 20px; }

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

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

/* COOKIE BANNER */
.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 24px;
    right: 24px;
    max-width: 540px;
    background: var(--ink);
    color: var(--canvas);
    border-radius: var(--rounded-lg);
    padding: 20px 24px;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 24px rgba(38,37,30,0.18);
}

.cookie-banner.visible { display: block; }

.cookie-banner p {
    font-size: 14px;
    color: var(--canvas-soft);
    line-height: 1.6;
    margin-bottom: 16px;
}

.cookie-banner a { color: var(--canvas); text-decoration: underline; }

.cookie-buttons { display: flex; gap: 10px; }

.btn-cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: var(--rounded-md);
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    transition: background 0.15s;
}

.btn-cookie-accept:hover { background: var(--primary-active); }

.btn-cookie-reject {
    background: transparent;
    color: var(--muted-soft);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: var(--rounded-md);
    padding: 8px 18px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
    transition: all 0.15s;
}

.btn-cookie-reject:hover { color: var(--canvas); border-color: rgba(255,255,255,0.4); }

/* BADGE PILLS */
.badge-pill {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    background: var(--surface-strong);
    color: var(--ink);
    padding: 4px 10px;
    border-radius: var(--rounded-pill);
}

/* INFO SECTION */
.info-band {
    background: var(--surface-card);
    border-top: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
    padding: 48px 0;
}

.info-band-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.info-band-item { text-align: center; }

.info-band-item-value {
    font-size: 32px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1;
    margin-bottom: 8px;
}

.info-band-item-label {
    font-size: 14px;
    color: var(--muted);
}

/* DIVIDER */
.divider { border: none; border-top: 1px solid var(--hairline); margin: 32px 0; }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero h1 { font-size: 40px; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
    .info-band-grid { grid-template-columns: repeat(2, 2fr); }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .hero-inner { grid-template-columns: 1fr; gap: 40px; }
    .hero h1 { font-size: 32px; letter-spacing: -0.8px; }
    .section-title { font-size: 28px; }
    .cards-grid { grid-template-columns: 1fr; }
    .articles-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .article-header h1 { font-size: 30px; }
    .page-header h1 { font-size: 30px; }
    .info-band-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
    .cookie-banner { left: 16px; right: 16px; bottom: 16px; }
}