@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 {
    --color-canvas: #f7f7f4;
    --color-canvas-soft: #fafaf7;
    --color-surface-card: #ffffff;
    --color-surface-strong: #e6e5e0;
    --color-primary: #f54e00;
    --color-primary-active: #d04200;
    --color-ink: #26251e;
    --color-body: #5a5852;
    --color-body-strong: #26251e;
    --color-muted: #807d72;
    --color-muted-soft: #a09c92;
    --color-on-primary: #ffffff;
    --color-hairline: #e6e5e0;
    --color-hairline-soft: #efeee8;
    --color-hairline-strong: #cfcdc4;
    --color-success: #1f8a65;
    --color-error: #cf2d56;

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

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

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

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

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

/* TOP NAV */
.site-nav {
    background-color: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    height: 64px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.nav-logo {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 600;
    color: var(--color-ink);
    letter-spacing: -0.02em;
    white-space: nowrap;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-body);
    transition: color 0.15s ease;
}

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

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px;
}

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

.nav-mobile {
    display: none;
    background-color: var(--color-canvas);
    border-bottom: 1px solid var(--color-hairline);
    padding: 16px 0;
}

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

.nav-mobile ul {
    list-style: none;
    padding: 0 24px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-mobile ul li a {
    display: block;
    padding: 10px 0;
    font-size: 15px;
    font-weight: 500;
    color: var(--color-body);
    border-bottom: 1px solid var(--color-hairline-soft);
}

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

.hero-eyebrow {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 20px;
}

.hero h1 {
    font-size: 72px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -2.16px;
    color: var(--color-ink);
    max-width: 800px;
    margin-bottom: 20px;
}

.hero-lead {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-body);
    max-width: 560px;
    margin-bottom: 48px;
}

.hero-image {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
}

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

/* ARTICLE CARDS GRID */
.articles-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--color-hairline);
}

.section-head {
    margin-bottom: 40px;
}

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

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

.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.card {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-radius: var(--rounded-lg);
    overflow: hidden;
    transition: border-color 0.15s ease;
}

.card:hover {
    border-color: var(--color-hairline-strong);
}

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

.card-body {
    padding: 24px;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

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

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

.card-excerpt {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: 20px;
}

.card-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.card-link::after {
    content: '→';
}

/* TOPIC OVERVIEW */
.overview-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--color-hairline);
}

.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.overview-grid img {
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
    width: 100%;
    height: 360px;
    object-fit: cover;
}

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

.overview-content p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: 16px;
}

/* INFO BLOCKS */
.info-blocks {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 80px;
}

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

.info-block-number {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 12px;
}

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

.info-block p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-body);
}

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

.article-header .badge {
    margin-bottom: 20px;
}

.article-title {
    font-size: 52px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--color-ink);
    max-width: 760px;
    margin-bottom: 20px;
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

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

.article-body {
    padding: 64px 0;
}

.article-content {
    max-width: 720px;
}

.article-content h2 {
    font-size: 26px;
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    margin: 48px 0 16px;
}

.article-content h3 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-ink);
    margin: 32px 0 12px;
}

.article-content p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: 20px;
}

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

.article-content li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: 8px;
}

.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

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

.article-content .note-block {
    background-color: var(--color-surface-card);
    border: 1px solid var(--color-hairline);
    border-left: 3px solid var(--color-primary);
    border-radius: var(--rounded-md);
    padding: 20px 24px;
    margin: 32px 0;
}

.article-content .note-block p {
    margin: 0;
    font-size: 14px;
    color: var(--color-body);
}

.article-content figure {
    margin: 40px 0;
}

.article-content figure img {
    border-radius: var(--rounded-lg);
    border: 1px solid var(--color-hairline);
    width: 100%;
}

.article-content figcaption {
    font-size: 13px;
    color: var(--color-muted);
    margin-top: 10px;
}

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

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

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

.sidebar-box h4 {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--color-muted);
    margin-bottom: 16px;
}

.sidebar-box ul {
    list-style: none;
    padding: 0;
}

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

.sidebar-box ul li a {
    font-size: 14px;
    color: var(--color-body);
    border-bottom: 1px solid var(--color-hairline-soft);
    padding-bottom: 8px;
    display: block;
}

.sidebar-box ul li a:hover {
    color: var(--color-ink);
}

.sidebar-box ul li:last-child a {
    border-bottom: none;
    padding-bottom: 0;
}

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

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

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

.contact-info p {
    font-size: 16px;
    line-height: 1.5;
    color: var(--color-body);
    margin-bottom: 24px;
}

.contact-detail {
    font-size: 14px;
    color: var(--color-muted);
    margin-bottom: 8px;
}

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

.contact-form label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--color-ink);
    margin-bottom: 6px;
}

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

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

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

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

.btn-primary {
    display: inline-block;
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    transition: background-color 0.15s ease;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

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

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.form-message {
    display: none;
    padding: 16px 20px;
    border-radius: var(--rounded-md);
    font-size: 14px;
    margin-top: 16px;
}

.form-message.success {
    background-color: #e8f5f0;
    color: var(--color-success);
    border: 1px solid #b5ddd1;
}

.form-message.show {
    display: block;
}

/* FOOTER */
.site-footer {
    padding: 64px 0 48px;
    border-top: 1px solid var(--color-hairline);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-body);
    margin-top: 12px;
    max-width: 240px;
}

.footer-col h5 {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 16px;
}

.footer-col ul {
    list-style: none;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    font-size: 14px;
    color: var(--color-body);
    transition: color 0.15s ease;
}

.footer-col ul li a:hover {
    color: var(--color-ink);
}

.footer-bottom {
    border-top: 1px solid var(--color-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(--color-muted);
}

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

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

/* COOKIE BANNER */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-ink);
    color: var(--color-canvas);
    padding: 20px 0;
    z-index: 1000;
    display: none;
}

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

.cookie-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.cookie-text {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-canvas);
    max-width: 640px;
}

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

.cookie-actions {
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.btn-cookie-accept {
    background-color: var(--color-primary);
    color: var(--color-on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: var(--rounded-md);
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    transition: background-color 0.15s ease;
}

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

.btn-cookie-reject {
    background-color: transparent;
    color: var(--color-canvas);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    border-radius: var(--rounded-md);
    border: 1px solid rgba(247,247,244,0.3);
    cursor: pointer;
    font-family: var(--font-body);
    transition: border-color 0.15s ease;
}

.btn-cookie-reject:hover {
    border-color: rgba(247,247,244,0.6);
}

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

.page-title {
    font-size: 52px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--color-ink);
    margin-bottom: 16px;
}

.page-lead {
    font-size: 18px;
    line-height: 1.5;
    color: var(--color-body);
    max-width: 560px;
}

.page-body {
    padding: 64px 0;
    max-width: 720px;
}

.page-body h2 {
    font-size: 26px;
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.325px;
    color: var(--color-ink);
    margin: 48px 0 16px;
}

.page-body h3 {
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-ink);
    margin: 32px 0 12px;
}

.page-body p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: 20px;
}

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

.page-body li {
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-body);
    margin-bottom: 8px;
}

.page-body a {
    color: var(--color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* ABOUT */
.team-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 32px;
}

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

.team-card h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--color-ink);
    margin-bottom: 4px;
}

.team-card .role {
    font-size: 13px;
    color: var(--color-muted);
    margin-bottom: 12px;
}

.team-card p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--color-body);
    margin: 0;
}

/* BREADCRUMB */
.breadcrumb {
    padding: 16px 0;
    border-bottom: 1px solid var(--color-hairline-soft);
}

.breadcrumb ol {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.breadcrumb li {
    font-size: 13px;
    color: var(--color-muted);
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb li:not(:last-child)::after {
    content: '/';
    color: var(--color-hairline-strong);
}

.breadcrumb li a {
    color: var(--color-muted);
}

.breadcrumb li a:hover {
    color: var(--color-body);
}

.breadcrumb li.active {
    color: var(--color-body);
}

/* RELATED ARTICLES */
.related-section {
    padding: 64px 0;
    border-top: 1px solid var(--color-hairline);
}

.related-section .section-label {
    margin-bottom: 24px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 56px;
        letter-spacing: -1.5px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr 1fr;
    }

    .footer-grid .footer-brand {
        grid-column: 1 / -1;
    }

    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-sidebar {
        position: static;
    }

    .related-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 40px;
        letter-spacing: -1px;
    }

    .hero-lead {
        font-size: 16px;
    }

    .article-title,
    .page-title {
        font-size: 36px;
        letter-spacing: -0.72px;
    }

    .cards-grid {
        grid-template-columns: 1fr;
    }

    .info-blocks {
        grid-template-columns: 1fr;
    }

    .overview-grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }

    .nav-links {
        display: none;
    }

    .nav-hamburger {
        display: flex;
    }

    .cookie-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .team-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: 48px 0;
    }

    .hero h1 {
        font-size: 32px;
        letter-spacing: -0.5px;
    }

    .section-title {
        font-size: 28px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
    }

    .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
    }
}