: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;
    --font-sans: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
    background: var(--canvas);
    color: var(--body);
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

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

a { color: inherit; text-decoration: none; }

ul, ol { list-style: none; }

address { font-style: normal; }

.site-header {
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    flex-shrink: 0;
}

.logo-mark {
    width: 32px;
    height: 32px;
    background: var(--ink);
    color: var(--canvas);
    border-radius: var(--rounded-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.logo-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.1px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--body);
    text-decoration: none;
    transition: color 0.15s;
    white-space: nowrap;
}

.nav-link:hover { color: var(--ink); }
.nav-link--active { color: var(--ink); }

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 20px;
    height: 1.5px;
    background: var(--ink);
    transition: transform 0.2s, opacity 0.2s;
}

.hero-band {
    padding: var(--spacing-section) 0;
    background: var(--canvas);
}

.hero-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.hero-label {
    display: inline-flex;
    align-items: center;
    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: var(--spacing-lg);
}

.hero-title {
    font-size: 56px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--ink);
    max-width: 760px;
    margin-bottom: var(--spacing-lg);
}

.hero-desc {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--body);
    max-width: 580px;
    margin-bottom: var(--spacing-xxl);
}

.hero-image {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    margin-top: var(--spacing-section);
}

.hero-image img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.section {
    padding: var(--spacing-section) 0;
}

.section--alt {
    background: var(--canvas-soft);
    border-top: 1px solid var(--hairline-soft);
    border-bottom: 1px solid var(--hairline-soft);
}

.section-label {
    display: inline-flex;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--spacing-base);
}

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

.section-desc {
    font-size: 16px;
    line-height: 1.6;
    color: var(--body);
    max-width: 560px;
    margin-bottom: var(--spacing-xxl);
}

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

.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__image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.article-card__body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

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

.article-card__title {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.35;
    margin-bottom: var(--spacing-sm);
}

.article-card__excerpt {
    font-size: 14px;
    line-height: 1.6;
    color: var(--body);
    flex: 1;
    margin-bottom: var(--spacing-base);
}

.article-card__link {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
    align-self: flex-start;
}

.article-card__meta {
    font-size: 13px;
    color: var(--muted);
    margin-top: var(--spacing-sm);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xxl);
}

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

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

.feature-card__title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: var(--spacing-xs);
}

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

.contact-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xxl);
    align-items: start;
}

.contact-info { }

.contact-info__title {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin-bottom: var(--spacing-base);
}

.contact-info__text {
    font-size: 16px;
    line-height: 1.6;
    color: var(--body);
    margin-bottom: var(--spacing-xl);
}

.contact-detail {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.contact-detail__item {
    font-size: 14px;
    color: var(--body);
    display: flex;
    gap: var(--spacing-sm);
}

.contact-detail__label {
    font-weight: 600;
    color: var(--ink);
    min-width: 80px;
}

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

.form-group {
    margin-bottom: var(--spacing-base);
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: var(--spacing-xs);
}

.form-input,
.form-textarea {
    width: 100%;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--rounded-md);
    padding: 12px 16px;
    height: 44px;
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--ink);
    transition: border-color 0.15s;
    outline: none;
}

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

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

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
    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-color 0.15s;
    text-decoration: none;
}

.btn--primary {
    background: var(--primary);
    color: var(--on-primary);
}

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

.btn--secondary {
    background: var(--surface-card);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
}

.btn--secondary:hover { background: var(--surface-strong); }

.btn--download {
    background: var(--ink);
    color: var(--canvas);
    padding: 12px 20px;
    height: 44px;
}

.btn--download:hover { background: #3a3930; }

.btn--full { width: 100%; }

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

.form-message--success {
    background: #e8f5ef;
    color: var(--semantic-success);
    border: 1px solid #c3e6d6;
}

.form-message--error {
    background: #fce8ec;
    color: var(--semantic-error);
    border: 1px solid #f5c2cc;
}

.article-page {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--spacing-section) var(--spacing-xl);
}

.article-page__header {
    margin-bottom: var(--spacing-xxl);
}

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

.article-page__title {
    font-size: 42px;
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -1px;
    color: var(--ink);
    margin-bottom: var(--spacing-base);
}

.article-page__lead {
    font-size: 18px;
    line-height: 1.65;
    color: var(--body);
    margin-bottom: var(--spacing-lg);
}

.article-page__meta {
    font-size: 13px;
    color: var(--muted);
    display: flex;
    gap: var(--spacing-base);
    flex-wrap: wrap;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--hairline);
}

.article-page__image {
    border-radius: var(--rounded-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    margin-bottom: var(--spacing-xxl);
}

.article-page__image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

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

.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
    line-height: 1.3;
}

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

.article-body ul,
.article-body ol {
    margin: var(--spacing-base) 0;
    padding-left: var(--spacing-xl);
}

.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }

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

.article-body a {
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.article-body blockquote {
    border-left: 3px solid var(--hairline-strong);
    padding: var(--spacing-sm) var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    background: var(--canvas-soft);
    border-radius: 0 var(--rounded-sm) var(--rounded-sm) 0;
}

.article-body blockquote p {
    color: var(--body-strong);
    font-style: italic;
}

.article-body code {
    font-family: var(--font-mono);
    font-size: 13px;
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-xs);
    padding: 2px 6px;
    color: var(--ink);
}

.infobox {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--rounded-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.infobox__title {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 11px;
}

.infobox__list {
    list-style: none;
    padding: 0;
}

.infobox__list li {
    font-size: 14px;
    color: var(--body);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--hairline-soft);
    display: flex;
    gap: var(--spacing-sm);
}

.infobox__list li:last-child { border-bottom: none; }

.infobox__list strong { color: var(--ink); min-width: 140px; }

.article-nav {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-base);
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--hairline);
}

.article-nav__link {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 13px;
    color: var(--muted);
    padding: var(--spacing-base) 0;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
}

.breadcrumb a { color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
.breadcrumb__sep { color: var(--hairline-strong); }

.page-content {
    max-width: 760px;
    margin: 0 auto;
    padding: var(--spacing-section) var(--spacing-xl);
}

.page-content h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    margin-bottom: var(--spacing-lg);
    line-height: 1.15;
}

.page-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: var(--spacing-xxl) 0 var(--spacing-base);
}

.page-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: var(--spacing-xl) 0 var(--spacing-sm);
}

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

.page-content ul, .page-content ol {
    margin: var(--spacing-base) 0;
    padding-left: var(--spacing-xl);
}

.page-content ul { list-style: disc; }
.page-content ol { list-style: decimal; }

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

.page-content a {
    color: var(--ink);
    text-decoration: underline;
    text-underline-offset: 3px;
}

.page-content .updated {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: var(--spacing-xxl);
}

.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding: var(--spacing-xxl) 0 0;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl) var(--spacing-xxl);
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-xxl);
}

.footer-logo {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: 14px;
    line-height: 1.6;
    color: var(--body);
}

.footer-heading {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: var(--spacing-base);
}

.footer-links { display: flex; flex-direction: column; gap: var(--spacing-xs); }

.footer-links a {
    font-size: 14px;
    color: var(--body);
    text-decoration: none;
}

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

.footer-address p {
    font-size: 14px;
    color: var(--body);
    margin-bottom: var(--spacing-xs);
}

.footer-bottom {
    border-top: 1px solid var(--hairline);
    padding: var(--spacing-base) var(--spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.footer-copy, .footer-disclaimer {
    font-size: 13px;
    color: var(--muted);
}

.cookie-banner {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-card);
    border-top: 1px solid var(--hairline);
    z-index: 200;
    padding: var(--spacing-base) var(--spacing-xl);
}

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

.cookie-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.cookie-text {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    flex: 1;
}

.cookie-text a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }

.cookie-actions { display: flex; gap: var(--spacing-sm); flex-shrink: 0; }

.skip-link {
    position: absolute;
    top: -100px;
    left: var(--spacing-base);
    background: var(--ink);
    color: var(--canvas);
    padding: var(--spacing-xs) var(--spacing-base);
    border-radius: var(--rounded-md);
    font-size: 14px;
    z-index: 999;
    transition: top 0.1s;
}

.skip-link:focus { top: var(--spacing-base); }

.updated-badge {
    display: inline-flex;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    background: var(--surface-strong);
    color: var(--muted);
    padding: 4px 10px;
    border-radius: var(--rounded-pill);
    margin-bottom: var(--spacing-base);
}

@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: 1fr 1fr; }
    .hero-title { font-size: 44px; }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        flex-direction: column;
        padding: var(--spacing-base) var(--spacing-xl);
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
    .nav-menu.is-open { display: flex; }
    .nav-toggle { display: flex; }
    .nav-container { position: relative; }
    .contact-section { grid-template-columns: 1fr; }
    .article-nav { flex-direction: column; }
}

@media (max-width: 640px) {
    .container { padding: 0 var(--spacing-base); }
    .nav-container { padding: 0 var(--spacing-base); }
    .hero-inner { padding: 0 var(--spacing-base); }
    .section { padding: var(--spacing-xxl) 0; }
    .hero-band { padding: var(--spacing-xxl) 0; }
    .hero-title { font-size: 32px; letter-spacing: -0.8px; }
    .section-title { font-size: 28px; }
    .articles-grid { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: var(--spacing-xl); }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .article-page { padding: var(--spacing-xxl) var(--spacing-base); }
    .article-page__title { font-size: 30px; }
    .page-content { padding: var(--spacing-xxl) var(--spacing-base); }
    .page-content h1 { font-size: 30px; }
    .cookie-inner { flex-direction: column; align-items: flex-start; }
    .breadcrumb { padding-left: var(--spacing-base); padding-right: var(--spacing-base); }
}