: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;
    --spacing-xxs: 4px;
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-base: 16px;
    --spacing-md: 20px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;
    --spacing-section: 80px;
}

*, *::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);
    font-size: 16px;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* NAV */
.site-nav {
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 64px;
    display: flex;
    align-items: center;
}
.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    width: 100%;
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}
.nav-wordmark {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.01em;
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-menu {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex: 1;
}
.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--body);
    line-height: 1.4;
    transition: color 0.15s;
}
.nav-link:hover, .nav-link[aria-current="page"] { color: var(--ink); }
.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    margin-left: auto;
}
.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: all 0.2s;
}

/* HERO */
.hero {
    padding: var(--spacing-section) 0;
    background: var(--canvas);
}
.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}
.hero-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--spacing-lg);
}
.hero h1 {
    font-size: 72px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -2.16px;
    color: var(--ink);
    max-width: 800px;
    margin-bottom: var(--spacing-lg);
}
.hero-sub {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
}
.hero-image {
    margin-top: var(--spacing-xxl);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    max-height: 480px;
}
.hero-image img {
    width: 100%;
    height: 480px;
    object-fit: cover;
}

/* SECTION */
.section {
    padding: var(--spacing-section) 0;
}
.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--spacing-lg);
}
.section-title {
    font-size: 36px;
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: var(--spacing-lg);
}
.section-sub {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    max-width: 600px;
    margin-bottom: var(--spacing-xxl);
}
.section-divider {
    border: none;
    border-top: 1px solid var(--hairline);
    margin: 0;
}

/* CARDS GRID */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}
.cards-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

/* FEATURE CARD */
.feature-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}
.feature-card-icon {
    font-size: 24px;
    margin-bottom: var(--spacing-xs);
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.4;
}
.feature-card p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
}

/* ARTICLE CARD */
.article-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: border-color 0.15s;
}
.article-card:hover { border-color: var(--hairline-strong); }
.article-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.article-card-body {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    flex: 1;
}
.article-card-meta {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
}
.article-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.4;
}
.article-card p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    flex: 1;
}
.article-card-link {
    display: inline-block;
    margin-top: var(--spacing-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}
.article-card-link:hover { color: var(--primary-active); }

/* BUTTONS */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    line-height: 1;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    transition: background 0.15s;
    text-decoration: none;
}
.btn-primary:hover { background: var(--primary-active); color: var(--on-primary); }
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-card);
    color: var(--ink);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
    transition: border-color 0.15s;
    text-decoration: none;
}
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

/* ARTICLE PAGE */
.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: var(--spacing-xxl);
    align-items: start;
    padding: var(--spacing-section) 0;
}
.article-content { min-width: 0; }
.article-content h1 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: var(--spacing-lg);
}
.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    line-height: 1.25;
    margin: var(--spacing-xxl) 0 var(--spacing-base);
}
.article-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: var(--spacing-xl) 0 var(--spacing-xs);
}
.article-content p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    margin-bottom: var(--spacing-base);
}
.article-content ul, .article-content ol {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-base);
    list-style: disc;
}
.article-content ol { list-style: decimal; }
.article-content li {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    margin-bottom: var(--spacing-xxs);
}
.article-content strong { color: var(--ink); font-weight: 600; }
.article-content a { color: var(--primary); }
.article-content a:hover { color: var(--primary-active); }
.article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-base);
    margin-bottom: var(--spacing-xxl);
    font-size: 13px;
    color: var(--muted);
}
.article-meta-divider { color: var(--hairline-strong); }
.article-hero-img {
    width: 100%;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--hairline);
    margin-bottom: var(--spacing-xxl);
    max-height: 400px;
    object-fit: cover;
}
.article-sidebar {
    position: sticky;
    top: 80px;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}
.sidebar-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
}
.sidebar-card h4 {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--spacing-sm);
}
.sidebar-card ul { list-style: none; }
.sidebar-card li { margin-bottom: var(--spacing-xs); }
.sidebar-card a {
    font-size: 14px;
    color: var(--body);
    line-height: 1.4;
}
.sidebar-card a:hover { color: var(--ink); }
.article-breadcrumb {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: var(--spacing-xl);
}
.article-breadcrumb a { color: var(--muted); }
.article-breadcrumb a:hover { color: var(--ink); }

/* INFO BOX */
.info-box {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: var(--rounded-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}
.info-box p { margin-bottom: 0; font-size: 15px; }

/* CODE BLOCK */
.code-block {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-md);
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
    color: var(--ink);
    line-height: 1.5;
    overflow-x: auto;
    margin: var(--spacing-xl) 0;
}

/* CONTACT FORM */
.form-section {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-xxl);
    max-width: 640px;
}
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xxs);
    margin-bottom: var(--spacing-base);
}
.form-group label {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
}
.form-group input, .form-group textarea {
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    height: 44px;
    font-size: 16px;
    font-family: inherit;
    color: var(--ink);
    transition: border-color 0.15s;
    width: 100%;
}
.form-group textarea { height: auto; resize: vertical; min-height: 120px; }
.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--ink);
}
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--muted-soft); }
.form-error { font-size: 13px; color: var(--semantic-error); }
.form-success {
    font-size: 14px;
    color: var(--semantic-success);
    background: #f0faf6;
    border: 1px solid #9fd4be;
    border-radius: var(--rounded-md);
    padding: var(--spacing-base);
    margin-top: var(--spacing-base);
    display: none;
}

/* PAGE HERO */
.page-hero {
    padding: var(--spacing-xxl) 0 var(--spacing-section);
    border-bottom: 1px solid var(--hairline);
    margin-bottom: var(--spacing-section);
}
.page-hero h1 {
    font-size: 36px;
    font-weight: 400;
    letter-spacing: -0.72px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: var(--spacing-base);
}
.page-hero p {
    font-size: 16px;
    color: var(--body);
    max-width: 560px;
}

/* PROSE */
.prose h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: var(--spacing-xxl) 0 var(--spacing-base);
}
.prose h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: var(--spacing-xl) 0 var(--spacing-xs);
}
.prose p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    margin-bottom: var(--spacing-base);
}
.prose ul {
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-base);
    list-style: disc;
}
.prose li {
    font-size: 16px;
    line-height: 1.5;
    color: var(--body);
    margin-bottom: var(--spacing-xxs);
}
.prose a { color: var(--primary); }
.prose a:hover { color: var(--primary-active); }

/* FOOTER */
.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: 64px var(--spacing-lg) 48px;
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
    margin-bottom: var(--spacing-xxl);
}
.footer-wordmark {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    display: block;
    margin-bottom: var(--spacing-xs);
}
.footer-tagline {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.4;
}
.footer-col-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--spacing-sm);
}
.footer-col ul { display: flex; flex-direction: column; gap: var(--spacing-xs); }
.footer-col a {
    font-size: 14px;
    color: var(--body);
    line-height: 1.4;
}
.footer-col a:hover { color: var(--ink); }
.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid var(--hairline);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-base);
    font-size: 13px;
    color: var(--muted);
}
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--ink); }

/* COOKIE BANNER */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    color: var(--canvas);
    z-index: 999;
    padding: var(--spacing-base) var(--spacing-lg);
    display: none;
}
.cookie-banner.visible { display: block; }
.cookie-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}
.cookie-inner p { font-size: 14px; line-height: 1.5; }
.cookie-inner a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: var(--spacing-xs); flex-shrink: 0; }
.cookie-actions .btn-primary { background: var(--primary); height: 36px; }
.cookie-actions .btn-secondary {
    background: transparent;
    color: var(--canvas);
    border-color: rgba(255,255,255,0.3);
    height: 36px;
}
.cookie-actions .btn-secondary:hover { border-color: var(--canvas); }

/* DISCLAIMER */
.disclaimer {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-md);
    padding: var(--spacing-base) var(--spacing-lg);
    font-size: 13px;
    color: var(--muted);
    margin-bottom: var(--spacing-xl);
}

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

/* UPDATED DATE */
.updated-date {
    font-size: 13px;
    color: var(--muted);
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero h1 { font-size: 56px; letter-spacing: -1.5px; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .nav-menu { display: none; flex-direction: column; gap: var(--spacing-xs); position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: var(--spacing-base) var(--spacing-lg); }
    .nav-menu.open { display: flex; }
    .nav-hamburger { display: flex; }
    .nav-inner { position: relative; }
    .hero h1 { font-size: 40px; letter-spacing: -1px; }
    .hero-image img { height: 280px; }
    .cards-grid, .cards-grid-2 { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: var(--spacing-xl); }
    .footer-bottom { flex-direction: column; gap: var(--spacing-xs); }
    .cookie-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
    .hero { padding: var(--spacing-xxl) 0; }
    .hero h1 { font-size: 32px; letter-spacing: -0.5px; }
    .section { padding: var(--spacing-xxl) 0; }
    .section-title { font-size: 26px; }
    .form-section { padding: var(--spacing-lg); }
}