*, *::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-color: #5a5852;
    --muted: #807d72;
    --muted-soft: #a09c92;
    --on-primary: #ffffff;
    --hairline: #e6e5e0;
    --hairline-soft: #efeee8;
    --hairline-strong: #cfcdc4;
    --success: #1f8a65;
    --error: #cf2d56;
    --font-main: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-pill: 9999px;
}

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

body {
    background-color: var(--canvas);
    color: var(--body-color);
    font-family: var(--font-main);
    font-size: 1rem;
    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;
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
}
.logo span { color: var(--primary); }

.main-nav ul {
    display: flex;
    gap: 32px;
    list-style: none;
}

.main-nav ul li a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--body-color);
    transition: color 0.15s;
}
.main-nav ul li a:hover,
.main-nav ul li.active a { color: var(--ink); }

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform 0.2s, opacity 0.2s;
}

.hero {
    padding: 80px 0 64px;
    border-bottom: 1px solid var(--hairline);
}
.hero-label {
    display: inline-block;
    background: var(--surface-strong);
    color: var(--ink);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    border-radius: var(--radius-pill);
    padding: 4px 10px;
    margin-bottom: 20px;
}
.hero h1 {
    font-size: 2.625rem;
    font-weight: 400;
    line-height: 1.15;
    letter-spacing: -0.72px;
    color: var(--ink);
    max-width: 760px;
    margin-bottom: 20px;
}
.hero-lead {
    font-size: 1rem;
    color: var(--body-color);
    max-width: 640px;
    margin-bottom: 8px;
}
.hero-meta {
    font-size: 0.8125rem;
    color: var(--muted);
    margin-bottom: 40px;
}
.hero-img-wrap {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    max-height: 420px;
}
.hero-img-wrap img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.section { padding: 80px 0; }
.section + .section { border-top: 1px solid var(--hairline-soft); }

.section-label {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 12px;
}

.section-title {
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: -0.5px;
    color: var(--ink);
    margin-bottom: 40px;
}
.section-title-sm {
    font-size: 1.625rem;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin-bottom: 32px;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.article-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}
.article-card-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}
.article-card-body {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.article-card-tag {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
}
.article-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.35;
    margin-bottom: 12px;
}
.article-card-excerpt {
    font-size: 0.875rem;
    color: var(--body-color);
    line-height: 1.55;
    flex: 1;
}
.article-card-link {
    display: inline-block;
    margin-top: 16px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ink);
    border-bottom: 1px solid var(--hairline-strong);
    padding-bottom: 1px;
    transition: color 0.15s, border-color 0.15s;
}
.article-card-link:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 40px;
}
.info-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 24px;
}
.info-card h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 10px;
}
.info-card p {
    font-size: 0.875rem;
    color: var(--body-color);
    line-height: 1.55;
}

.article-content { max-width: 760px; }

.article-content h1 {
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: -0.5px;
    color: var(--ink);
    line-height: 1.2;
    margin-bottom: 16px;
}
.article-content h2 {
    font-size: 1.375rem;
    font-weight: 400;
    letter-spacing: -0.2px;
    color: var(--ink);
    margin-top: 48px;
    margin-bottom: 16px;
}
.article-content h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--ink);
    margin-top: 32px;
    margin-bottom: 12px;
}
.article-content p {
    font-size: 1rem;
    color: var(--body-color);
    line-height: 1.65;
    margin-bottom: 20px;
}
.article-content ul,
.article-content ol {
    padding-left: 20px;
    margin-bottom: 20px;
}
.article-content li {
    font-size: 1rem;
    color: var(--body-color);
    line-height: 1.65;
    margin-bottom: 6px;
}
.article-content a {
    color: var(--ink);
    border-bottom: 1px solid var(--hairline-strong);
    padding-bottom: 1px;
}
.article-content a:hover { color: var(--primary); border-color: var(--primary); }

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--hairline);
}
.article-meta time {
    font-size: 0.8125rem;
    color: var(--muted);
}
.article-meta .article-tag {
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    background: var(--surface-strong);
    color: var(--ink);
    padding: 3px 8px;
    border-radius: var(--radius-pill);
}

.article-lead {
    font-size: 1.125rem;
    color: var(--ink);
    line-height: 1.55;
    margin-bottom: 32px;
    font-weight: 400;
}

.article-image-full {
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--hairline);
    margin: 40px 0;
}
.article-image-full img {
    width: 100%;
    height: 380px;
    object-fit: cover;
}
.article-image-caption {
    font-size: 0.8125rem;
    color: var(--muted);
    padding: 10px 16px;
    background: var(--canvas-soft);
    border-top: 1px solid var(--hairline);
}

.callout {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--ink);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    margin: 32px 0;
}
.callout p {
    font-size: 0.9375rem;
    color: var(--body-color);
    margin: 0;
    line-height: 1.6;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 32px 0;
    font-size: 0.875rem;
}
.data-table th {
    text-align: left;
    padding: 10px 16px;
    background: var(--surface-strong);
    color: var(--ink);
    font-weight: 600;
    border-bottom: 1px solid var(--hairline-strong);
}
.data-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--hairline-soft);
    color: var(--body-color);
}
.data-table tr:last-child td { border-bottom: none; }

.refs {
    margin-top: 48px;
    padding-top: 32px;
    border-top: 1px solid var(--hairline);
}
.refs h3 {
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}
.refs ol {
    padding-left: 20px;
}
.refs li {
    font-size: 0.8125rem;
    color: var(--muted);
    line-height: 1.6;
    margin-bottom: 8px;
}
.refs a { color: var(--muted); border-bottom: 1px solid var(--hairline); }
.refs a:hover { color: var(--primary); }

.article-breadcrumb {
    padding: 20px 0;
    border-bottom: 1px solid var(--hairline-soft);
    margin-bottom: 48px;
}
.article-breadcrumb a,
.article-breadcrumb span {
    font-size: 0.8125rem;
    color: var(--muted);
}
.article-breadcrumb a:hover { color: var(--ink); }
.article-breadcrumb .sep { margin: 0 8px; color: var(--hairline-strong); }

.contact-form-wrap {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    padding: 40px;
    max-width: 600px;
}
.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 6px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    font-family: var(--font-main);
    font-size: 0.9375rem;
    color: var(--ink);
    height: 44px;
    outline: none;
    transition: border-color 0.15s;
}
.form-group textarea {
    height: auto;
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--ink);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--muted-soft);
}
.btn-submit {
    background: var(--ink);
    color: var(--canvas);
    font-family: var(--font-main);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 12px 20px;
    height: 44px;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: background 0.15s;
}
.btn-submit:hover { background: var(--primary); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; }
.form-message {
    display: none;
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}
.form-message.success {
    background: #e8f5f1;
    color: var(--success);
    border: 1px solid #b8ddd4;
}

.cookie-banner {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    color: var(--canvas);
    padding: 20px 24px;
    z-index: 1000;
    border-top: 1px solid rgba(255,255,255,0.1);
}
.cookie-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
}
.cookie-text {
    flex: 1;
    font-size: 0.875rem;
    color: rgba(247,247,244,0.8);
    line-height: 1.5;
    min-width: 240px;
}
.cookie-text a { color: rgba(247,247,244,0.7); border-bottom: 1px solid rgba(247,247,244,0.3); }
.cookie-buttons { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie {
    font-family: var(--font-main);
    font-size: 0.875rem;
    font-weight: 500;
    padding: 8px 18px;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: none;
    transition: background 0.15s;
}
.btn-cookie-accept { background: var(--canvas); color: var(--ink); }
.btn-cookie-accept:hover { background: var(--canvas-soft); }
.btn-cookie-reject { background: transparent; color: var(--canvas); border: 1px solid rgba(255,255,255,0.3); }
.btn-cookie-reject:hover { background: rgba(255,255,255,0.07); }

.site-footer {
    background: var(--canvas);
    border-top: 1px solid var(--hairline);
    padding-top: 64px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 48px;
}
.footer-logo {
    font-size: 1rem;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.02em;
    margin-bottom: 10px;
}
.footer-logo span { color: var(--primary); }
.footer-desc {
    font-size: 0.875rem;
    color: var(--body-color);
    line-height: 1.55;
}
.footer-col h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
    letter-spacing: 0.3px;
}
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a {
    font-size: 0.875rem;
    color: var(--body-color);
    transition: color 0.15s;
}
.footer-col ul li a:hover { color: var(--ink); }
.footer-bottom {
    border-top: 1px solid var(--hairline);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 8px;
}
.footer-bottom p {
    font-size: 0.8125rem;
    color: var(--muted);
}
.footer-bottom a { color: var(--muted); }
.footer-bottom a:hover { color: var(--ink); }

.page-content { max-width: 760px; padding: 64px 0; }
.page-content h1 {
    font-size: 2rem;
    font-weight: 400;
    letter-spacing: -0.5px;
    color: var(--ink);
    margin-bottom: 32px;
}
.page-content h2 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--ink);
    margin-top: 40px;
    margin-bottom: 14px;
}
.page-content p {
    font-size: 1rem;
    color: var(--body-color);
    line-height: 1.65;
    margin-bottom: 18px;
}
.page-content ul {
    padding-left: 20px;
    margin-bottom: 18px;
}
.page-content li {
    font-size: 1rem;
    color: var(--body-color);
    line-height: 1.65;
    margin-bottom: 6px;
}
.page-updated {
    font-size: 0.8125rem;
    color: var(--muted);
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--hairline-soft);
}

@media (max-width: 1024px) {
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .info-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .hero h1 { font-size: 2rem; }
}

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--canvas);
        border-bottom: 1px solid var(--hairline);
        padding: 16px 24px;
    }
    .main-nav.open { display: block; }
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    .main-nav ul li a {
        display: block;
        padding: 10px 0;
        border-bottom: 1px solid var(--hairline-soft);
        font-size: 1rem;
    }
    .section { padding: 48px 0; }
    .hero { padding: 48px 0 40px; }
    .hero h1 { font-size: 1.75rem; letter-spacing: -0.3px; }
    .section-title { font-size: 1.5rem; }
    .articles-grid { grid-template-columns: 1fr; }
    .info-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
    .contact-form-wrap { padding: 24px; }
    .cookie-inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
    .hero-img-wrap img { height: 240px; }
    .article-image-full img { height: 220px; }
}