@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=JetBrains+Mono:wght@400&display=swap');

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

*, *::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: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    font-weight: 400;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

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

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

.site-nav {
    background: var(--canvas);
    border-bottom: 1px solid var(--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-brand {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.01em;
    white-space: nowrap;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}

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

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

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--ink);
}

.nav-toggle svg { display: block; }

.hero-band {
    padding: 80px 0;
    border-bottom: 1px solid var(--hairline-soft);
}

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

.hero-content {}

.badge-pill {
    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: 9999px;
    padding: 4px 10px;
    margin-bottom: 20px;
}

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

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

.hero-image {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
}

.hero-image img {
    width: 100%;
    height: 360px;
    object-fit: cover;
}

.section {
    padding: 80px 0;
}

.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);
    max-width: 600px;
    line-height: 1.6;
    margin-bottom: 48px;
}

.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: 12px;
    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: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
}

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

.article-card-body p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    flex: 1;
    margin-bottom: 20px;
}

.article-card-body .card-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    border-bottom: 1px solid var(--hairline-strong);
    padding-bottom: 2px;
    display: inline-block;
    transition: color 0.15s, border-color 0.15s;
}

.article-card-body .card-link:hover {
    color: var(--primary);
    border-color: var(--primary);
}

.divider { border: none; border-top: 1px solid var(--hairline-soft); }

.info-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.info-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 28px 24px;
}

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

.info-card h3 {
    font-size: 22px;
    font-weight: 400;
    letter-spacing: -0.11px;
    color: var(--ink);
    margin-bottom: 10px;
}

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

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 64px;
    align-items: start;
}

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

.contact-info p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 24px;
}

.contact-detail {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.contact-detail strong {
    font-size: 14px;
    color: var(--ink);
    font-weight: 500;
}

.contact-form {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 32px;
}

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

.form-group label {
    display: block;
    font-size: 14px;
    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: 8px;
    padding: 12px 16px;
    height: 44px;
    font-size: 14px;
    font-family: inherit;
    color: var(--ink);
    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;
    resize: vertical;
    min-height: 100px;
}

.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: 8px;
    padding: 10px 18px;
    height: 40px;
    font-size: 14px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: background 0.15s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

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

.form-message {
    margin-top: 12px;
    font-size: 14px;
    padding: 10px 14px;
    border-radius: 8px;
    display: none;
}

.form-message.success {
    background: #f0faf6;
    color: var(--success);
    border: 1px solid #b3e6d4;
}

.form-message.error-msg {
    background: #fdf2f4;
    color: var(--error);
    border: 1px solid #f4c4cd;
}

.site-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: 40px;
    margin-bottom: 48px;
}

.footer-brand p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.6;
    margin-top: 10px;
    max-width: 260px;
}

.footer-col h4 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--ink);
    margin-bottom: 14px;
}

.footer-col ul { display: flex; flex-direction: column; gap: 8px; }

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

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

.footer-bottom {
    border-top: 1px solid var(--hairline-soft);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

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

.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 48px);
    max-width: 680px;
    background: var(--ink);
    color: var(--canvas);
    border-radius: 12px;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    z-index: 999;
    box-shadow: 0 4px 32px rgba(38,37,30,0.18);
}

.cookie-banner p {
    font-size: 13px;
    color: #e6e5e0;
    line-height: 1.5;
    flex: 1;
}

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

.cookie-buttons { display: flex; gap: 8px; flex-shrink: 0; }

.btn-cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    border: none;
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    font-family: inherit;
}

.btn-cookie-reject {
    background: transparent;
    color: var(--canvas);
    border: 1px solid rgba(230,229,224,0.4);
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
    font-family: inherit;
}

.article-hero {
    padding: 60px 0 40px;
    border-bottom: 1px solid var(--hairline-soft);
}

.article-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    font-size: 13px;
    color: var(--muted);
}

.article-meta .tag {
    background: var(--surface-strong);
    color: var(--ink);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    border-radius: 9999px;
    padding: 4px 10px;
}

.article-hero h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    line-height: 1.15;
    margin-bottom: 20px;
    max-width: 760px;
}

.article-hero .lead {
    font-size: 18px;
    color: var(--body);
    line-height: 1.6;
    max-width: 680px;
    font-weight: 400;
}

.article-layout {
    padding: 48px 0 80px;
}

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

.article-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin-bottom: 14px;
    margin-top: 40px;
}

.article-body h2:first-child { margin-top: 0; }

.article-body h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 10px;
    margin-top: 28px;
}

.article-body p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 18px;
}

.article-body ul, .article-body ol {
    padding-left: 20px;
    margin-bottom: 18px;
}

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

.article-body li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 6px;
}

.article-body figure {
    margin: 32px 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
}

.article-body figure img {
    width: 100%;
    height: 320px;
    object-fit: cover;
}

.article-body figcaption {
    padding: 10px 16px;
    font-size: 13px;
    color: var(--muted);
    background: var(--canvas-soft);
    border-top: 1px solid var(--hairline-soft);
}

.article-body .note-box {
    background: var(--canvas-soft);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: 0 8px 8px 0;
    padding: 16px 20px;
    margin: 24px 0;
    font-size: 15px;
    color: var(--body);
    line-height: 1.6;
}

.article-body .ref-list {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px;
    margin-top: 40px;
}

.article-body .ref-list h4 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 14px;
}

.article-body .ref-list ul { list-style: none; padding: 0; }

.article-body .ref-list li {
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 6px;
    padding-left: 0;
}

.article-body .ref-list a { color: var(--body); border-bottom: 1px solid var(--hairline); }
.article-body .ref-list a:hover { color: var(--ink); border-color: var(--ink); }

.article-sidebar { position: sticky; top: 84px; }

.sidebar-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 20px;
}

.sidebar-card h4 {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 14px;
}

.sidebar-toc { display: flex; flex-direction: column; gap: 8px; }

.sidebar-toc a {
    font-size: 14px;
    color: var(--body);
    transition: color 0.15s;
    border-bottom: none;
    padding-left: 0;
}

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

.sidebar-related { display: flex; flex-direction: column; gap: 12px; }

.sidebar-related a {
    font-size: 14px;
    color: var(--body);
    line-height: 1.4;
    transition: color 0.15s;
    border-bottom: 1px solid var(--hairline-soft);
    padding-bottom: 12px;
}

.sidebar-related a:last-child { border-bottom: none; padding-bottom: 0; }
.sidebar-related a:hover { color: var(--ink); }

.page-header {
    padding: 60px 0 48px;
    border-bottom: 1px solid var(--hairline-soft);
}

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

.page-header p {
    font-size: 16px;
    color: var(--body);
}

.page-content {
    padding: 48px 0 80px;
    max-width: 780px;
}

.page-content h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin: 36px 0 12px;
}

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

.page-content h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 24px 0 8px;
}

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

.page-content ul, .page-content ol {
    padding-left: 20px;
    margin-bottom: 16px;
}

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

.page-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 6px;
}

.update-notice {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--muted);
    margin-top: 8px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--muted);
    margin-bottom: 20px;
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb span { color: var(--muted-soft); }

@media (max-width: 1024px) {
    .hero-band h1 { font-size: 38px; }
    .articles-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
    .article-layout .container { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
}

@media (max-width: 768px) {
    .hero-band .container { grid-template-columns: 1fr; gap: 32px; }
    .hero-image { display: none; }
    .hero-band h1 { font-size: 32px; }
    .hero-band { padding: 48px 0; }
    .section { padding: 48px 0; }
    .articles-grid { grid-template-columns: 1fr; }
    .info-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 32px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
    .nav-links { display: none; flex-direction: column; position: absolute; top: 64px; left: 0; right: 0; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 20px 24px; gap: 16px; }
    .nav-links.open { display: flex; }
    .nav-toggle { display: block; }
    .article-hero h1 { font-size: 30px; }
    .section-title { font-size: 28px; }
    .cookie-banner { flex-direction: column; align-items: flex-start; bottom: 0; left: 0; right: 0; width: 100%; max-width: 100%; transform: none; border-radius: 12px 12px 0 0; }
}

@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
}