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

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

html { scroll-behavior: smooth; }

body {
    background-color: var(--canvas);
    color: var(--body);
    font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
}

a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--primary); }

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

h1, h2, h3, h4, h5, h6 {
    color: var(--ink);
    font-weight: 400;
    font-family: 'Inter', system-ui, sans-serif;
}

h1 { font-size: 72px; line-height: 1.1; letter-spacing: -2.16px; }
h2 { font-size: 36px; line-height: 1.2; letter-spacing: -0.72px; }
h3 { font-size: 26px; line-height: 1.25; letter-spacing: -0.325px; }
h4 { font-size: 22px; line-height: 1.3; letter-spacing: -0.11px; }

.title-md { font-size: 18px; font-weight: 600; line-height: 1.4; color: var(--ink); }
.title-sm { font-size: 16px; font-weight: 600; line-height: 1.4; color: var(--ink); }
.body-sm { font-size: 14px; line-height: 1.5; }
.caption { font-size: 13px; line-height: 1.4; color: var(--muted); }
.label-upper { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); }

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

.site-nav {
    background-color: var(--canvas);
    height: 64px;
    border-bottom: 1px solid var(--hairline);
    position: sticky;
    top: 0;
    z-index: 200;
}

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

.nav-brand {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    text-decoration: none;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
    list-style: none;
}

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

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

.nav-hamburger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--ink);
}

.nav-hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--ink);
    margin: 4px 0;
    transition: all 0.2s;
}

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

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

.hero-band h1 { max-width: 800px; margin-bottom: 20px; }

.hero-band .hero-sub {
    font-size: 16px;
    color: var(--body);
    max-width: 560px;
    line-height: 1.6;
    margin-bottom: 36px;
}

.hero-image-wrap {
    margin-top: 56px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
}

.hero-image-wrap img {
    width: 100%;
    height: 480px;
    object-fit: cover;
}

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

.section-head { margin-bottom: 48px; }
.section-head h2 { margin-bottom: 12px; }
.section-head p { color: var(--body); max-width: 560px; }

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

.article-card {
    background-color: 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: 20px 24px 24px; flex: 1; display: flex; flex-direction: column; }
.article-card-body .label-upper { margin-bottom: 10px; }
.article-card-body h3 { font-size: 20px; margin-bottom: 10px; line-height: 1.3; }
.article-card-body p { color: var(--body); font-size: 14px; line-height: 1.5; flex: 1; margin-bottom: 16px; }
.article-card-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--ink);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-top: auto;
}
.article-card-link:hover { color: var(--primary); }

.divider { border: none; border-top: 1px solid var(--hairline); margin: 0; }

.intro-section { padding: 80px 0; }

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

.intro-text p { color: var(--body); margin-bottom: 16px; line-height: 1.6; }
.intro-text p:last-child { margin-bottom: 0; }

.info-blocks { display: flex; flex-direction: column; gap: 20px; }

.info-block {
    background-color: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 20px 24px;
}

.info-block .title-sm { margin-bottom: 6px; }
.info-block p { font-size: 14px; color: var(--body); line-height: 1.5; }

.contact-section { padding: 80px 0; background-color: var(--canvas-soft); }

.contact-form-wrap {
    max-width: 560px;
}

.contact-form-wrap h2 { margin-bottom: 12px; }
.contact-form-wrap .form-sub { color: var(--body); margin-bottom: 36px; }

.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 {
    background-color: var(--surface-card);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 16px;
    width: 100%;
    font-family: inherit;
    transition: border-color 0.15s;
    outline: none;
}

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

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

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

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

.btn-secondary {
    background-color: var(--surface-card);
    color: var(--ink);
    border: 1px solid var(--hairline-strong);
    border-radius: 8px;
    padding: 10px 18px;
    height: 40px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    font-family: inherit;
    transition: border-color 0.15s;
}

.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }

.form-status {
    margin-top: 12px;
    font-size: 14px;
    padding: 10px 16px;
    border-radius: 8px;
    display: none;
}

.form-status.success {
    background-color: #e8f5f1;
    color: var(--success);
    border: 1px solid #b8ddd4;
    display: block;
}

.form-status.loading {
    background-color: var(--canvas-soft);
    color: var(--muted);
    border: 1px solid var(--hairline);
    display: block;
}

.site-footer {
    background-color: 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: 48px;
    margin-bottom: 48px;
}

.footer-brand .nav-brand { font-size: 18px; margin-bottom: 12px; display: block; }
.footer-brand p { font-size: 14px; color: var(--body); line-height: 1.6; max-width: 220px; }

.footer-col h5 {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 16px;
    letter-spacing: 0.3px;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a {
    font-size: 14px;
    color: var(--body);
    text-decoration: none;
    transition: color 0.15s;
}
.footer-col a:hover { color: var(--ink); }

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

.footer-disclaimer {
    margin-top: 20px;
    font-size: 13px;
    color: var(--muted-soft);
    line-height: 1.5;
    border-top: 1px solid var(--hairline-soft);
    padding-top: 20px;
}

.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 24px;
    right: 24px;
    max-width: 560px;
    background-color: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: 12px;
    padding: 24px;
    z-index: 1000;
    box-shadow: none;
    display: none;
}

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

.cookie-banner h4 { font-size: 16px; font-weight: 600; color: var(--ink); margin-bottom: 8px; }
.cookie-banner p { font-size: 14px; color: var(--body); margin-bottom: 20px; line-height: 1.5; }

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

.article-hero {
    padding: 60px 0 0;
}

.article-hero .label-upper { margin-bottom: 16px; }
.article-hero h1 { font-size: 48px; letter-spacing: -1.2px; max-width: 860px; margin-bottom: 16px; }
.article-meta { display: flex; align-items: center; gap: 20px; margin-bottom: 36px; }
.article-meta span { font-size: 14px; color: var(--muted); }
.article-meta time { font-size: 14px; color: var(--muted); }

.article-hero-img {
    width: 100%;
    height: 420px;
    object-fit: cover;
    border-radius: 12px;
    border: 1px solid var(--hairline);
    margin-bottom: 60px;
}

.article-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 80px;
    padding-bottom: 80px;
}

.article-body h2 {
    font-size: 28px;
    margin-top: 48px;
    margin-bottom: 16px;
}

.article-body h3 {
    font-size: 22px;
    margin-top: 36px;
    margin-bottom: 12px;
    font-weight: 500;
}

.article-body p {
    margin-bottom: 20px;
    line-height: 1.7;
    color: var(--body);
}

.article-body ul, .article-body ol {
    margin-bottom: 20px;
    padding-left: 20px;
    color: var(--body);
}

.article-body li {
    margin-bottom: 8px;
    line-height: 1.6;
}

.article-body .highlight-box {
    background-color: var(--surface-card);
    border: 1px solid var(--hairline);
    border-left: 3px solid var(--primary);
    border-radius: 0 8px 8px 0;
    padding: 20px 24px;
    margin: 28px 0;
}

.article-body .highlight-box p {
    font-size: 15px;
    margin-bottom: 0;
    color: var(--body);
}

.article-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
    font-size: 14px;
}

.article-body th {
    background-color: var(--canvas-soft);
    color: var(--ink);
    font-weight: 600;
    padding: 10px 14px;
    border: 1px solid var(--hairline);
    text-align: left;
}

.article-body td {
    padding: 10px 14px;
    border: 1px solid var(--hairline);
    color: var(--body);
    vertical-align: top;
}

.article-body tr:nth-child(even) td { background-color: var(--canvas-soft); }

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

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

.sidebar-card h5 {
    font-size: 14px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--hairline);
}

.sidebar-links { list-style: none; }
.sidebar-links li { margin-bottom: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--hairline-soft); }
.sidebar-links li:last-child { margin-bottom: 0; padding-bottom: 0; border-bottom: none; }
.sidebar-links a { font-size: 14px; color: var(--body); display: block; line-height: 1.4; }
.sidebar-links a:hover { color: var(--primary); }

.page-layout { padding: 64px 0 80px; }
.page-layout h1 { font-size: 48px; letter-spacing: -1.2px; margin-bottom: 12px; }
.page-layout .page-sub { color: var(--muted); margin-bottom: 48px; }

.page-content h2 { font-size: 26px; margin-top: 40px; margin-bottom: 14px; }
.page-content h3 { font-size: 20px; font-weight: 500; margin-top: 28px; margin-bottom: 10px; }
.page-content p { color: var(--body); margin-bottom: 18px; line-height: 1.7; }
.page-content ul, .page-content ol { margin-bottom: 18px; padding-left: 20px; color: var(--body); }
.page-content li { margin-bottom: 8px; line-height: 1.6; }
.page-content .divider { margin: 40px 0; }

.two-col-page {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 80px;
    align-items: start;
}

.badge-pill {
    display: inline-block;
    background-color: 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;
}

.related-articles { padding: 60px 0 80px; border-top: 1px solid var(--hairline); }
.related-articles h2 { font-size: 26px; margin-bottom: 28px; }

.external-ref {
    font-size: 13px;
    color: var(--muted);
    font-style: italic;
}

.external-ref a {
    color: var(--muted);
    text-decoration: underline;
    text-decoration-color: var(--hairline-strong);
}

.external-ref a:hover { color: var(--ink); }

@media (max-width: 1023px) {
    .article-grid { grid-template-columns: 1fr 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .intro-grid { grid-template-columns: 1fr; gap: 40px; }
    .article-layout { grid-template-columns: 1fr; }
    .article-sidebar { position: static; }
    .two-col-page { grid-template-columns: 1fr; }
}

@media (max-width: 767px) {
    h1 { font-size: 32px; letter-spacing: -0.5px; }
    h2 { font-size: 26px; letter-spacing: -0.3px; }
    .hero-band { padding: 48px 0; }
    .hero-band h1 { font-size: 36px; letter-spacing: -0.8px; }
    .hero-image-wrap img { height: 260px; }
    .article-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .intro-section, .contact-section { padding: 48px 0; }
    .site-nav { height: 56px; }
    .nav-inner { height: 56px; }
    .nav-links { display: none; flex-direction: column; position: absolute; top: 56px; left: 0; right: 0; background-color: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 16px 24px 20px; gap: 16px; }
    .nav-links.open { display: flex; }
    .nav-hamburger { display: block; }
    .article-hero h1 { font-size: 32px; letter-spacing: -0.5px; }
    .article-hero-img { height: 220px; }
    .page-layout h1 { font-size: 32px; }
    .cookie-banner { left: 12px; right: 12px; bottom: 12px; }
}

@media (max-width: 479px) {
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}