@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 {
    --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;
    --success: #1f8a65;
    --error: #cf2d56;
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-pill: 9999px;
}

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

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

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

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

.nav-wordmark {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
}

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

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

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

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

.nav-right { display: flex; align-items: center; gap: 12px; }

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

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

.mobile-nav {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px;
    flex-direction: column;
    gap: 16px;
}

.mobile-nav.open { display: flex; }
.mobile-nav a { font-size: 15px; font-weight: 500; color: var(--body); }
.mobile-nav a:hover { color: var(--ink); }

/* BUTTONS */
.btn-primary {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: background 0.15s;
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
}

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

.btn-secondary {
    background: var(--surface-card);
    color: var(--ink);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
    transition: border-color 0.15s;
    display: inline-flex;
    align-items: center;
}

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

/* HERO BAND */
.hero-band {
    padding: 80px 0 60px;
    border-bottom: 1px solid var(--hairline);
}

.hero-band h1 {
    font-size: 56px;
    font-weight: 400;
    line-height: 1.1;
    letter-spacing: -1.5px;
    color: var(--ink);
    max-width: 780px;
    margin-bottom: 20px;
}

.hero-band .hero-sub {
    font-size: 16px;
    color: var(--body);
    max-width: 560px;
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-meta {
    font-size: 13px;
    color: var(--muted);
    margin-top: 32px;
}

/* BADGE PILL */
.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: var(--radius-pill);
    padding: 4px 10px;
    margin-bottom: 20px;
}

/* SECTION */
.section { padding: 80px 0; }
.section-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

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

.section-sub {
    font-size: 16px;
    color: var(--body);
    max-width: 560px;
    line-height: 1.6;
    margin-bottom: 48px;
}

/* ARTICLE CARDS */
.article-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;
    transition: border-color 0.2s;
}

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

.article-card-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
}

.article-card-body { padding: 20px; }

.article-card-tag {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
}

.article-card-title {
    font-size: 18px;
    font-weight: 400;
    color: var(--ink);
    line-height: 1.35;
    margin-bottom: 10px;
    letter-spacing: -0.1px;
}

.article-card:hover .article-card-title { color: var(--primary); }

.article-card-excerpt {
    font-size: 14px;
    color: var(--body);
    line-height: 1.55;
    margin-bottom: 16px;
}

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

/* FEATURED ARTICLE */
.featured-article {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 48px;
}

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

.featured-article-body { padding: 40px 40px 40px 0; }

.featured-article-body .article-card-tag { margin-bottom: 12px; }

.featured-article-body h2 {
    font-size: 28px;
    font-weight: 400;
    color: var(--ink);
    letter-spacing: -0.4px;
    line-height: 1.25;
    margin-bottom: 14px;
}

.featured-article-body p {
    font-size: 15px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 20px;
}

.text-link {
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}

/* ARTICLE PAGE */
.article-page { padding: 60px 0 80px; }

.article-header { margin-bottom: 40px; }

.article-header h1 {
    font-size: 42px;
    font-weight: 400;
    letter-spacing: -1px;
    color: var(--ink);
    line-height: 1.15;
    margin: 16px 0 16px;
    max-width: 780px;
}

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

.article-header .article-meta span { display: flex; align-items: center; gap: 4px; }

.article-hero-img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    margin-bottom: 48px;
    border: 1px solid var(--hairline);
}

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

.article-body h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.3px;
    color: var(--ink);
    line-height: 1.25;
    margin: 40px 0 14px;
}

.article-body h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--ink);
    margin: 28px 0 10px;
}

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

.article-body ul, .article-body ol {
    margin: 0 0 18px 22px;
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
}

.article-body li { margin-bottom: 6px; }

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

.article-body strong { color: var(--body-strong); font-weight: 600; }

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

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

.info-box p { margin: 0; font-size: 15px; }

.table-wrap { overflow-x: auto; margin: 28px 0; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

.data-table th {
    background: var(--surface-strong);
    color: var(--ink);
    font-weight: 600;
    text-align: left;
    padding: 10px 14px;
    border: 1px solid var(--hairline);
    font-size: 11px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

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

.data-table tr:nth-child(even) td { background: var(--canvas-soft); }

.related-articles { margin-top: 64px; padding-top: 40px; border-top: 1px solid var(--hairline); }

.related-articles h3 {
    font-size: 22px;
    font-weight: 400;
    color: var(--ink);
    margin-bottom: 24px;
    letter-spacing: -0.1px;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

/* TOPICS BAND */
.topics-band { background: var(--canvas-soft); border-top: 1px solid var(--hairline); border-bottom: 1px solid var(--hairline); }

.topic-list {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.topic-tag {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: var(--radius-pill);
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--body);
    transition: border-color 0.15s, color 0.15s;
}

.topic-tag:hover { border-color: var(--primary); color: var(--primary); }

/* FORM */
.contact-section { padding: 80px 0; }

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

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

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

.contact-form { display: flex; flex-direction: column; gap: 16px; }

.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-group label { font-size: 14px; font-weight: 500; color: var(--ink); }

.form-group input,
.form-group textarea {
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    height: 44px;
    font-size: 15px;
    font-family: inherit;
    color: var(--ink);
    transition: border-color 0.15s;
    outline: none;
}

.form-group textarea { height: auto; min-height: 110px; resize: vertical; }

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

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

.form-error-msg { font-size: 12px; color: var(--error); display: none; }
.form-error-msg.visible { display: block; }

.form-status {
    font-size: 14px;
    padding: 12px 16px;
    border-radius: var(--radius-md);
    display: none;
}

.form-status.success { background: #e8f5f0; color: var(--success); border: 1px solid #b8ddd3; display: block; }
.form-status.loading { background: var(--canvas-soft); color: var(--muted); border: 1px solid var(--hairline); display: block; }

/* FOOTER */
.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: 14px;
    color: var(--body);
    line-height: 1.6;
    margin-top: 12px;
    max-width: 260px;
}

.footer-col h4 {
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: 0.3px;
    margin-bottom: 14px;
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.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);
    padding-top: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

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

.footer-bottom-links { display: flex; gap: 20px; }
.footer-bottom-links a { font-size: 13px; color: var(--muted); }
.footer-bottom-links a:hover { color: var(--ink); }

/* DISCLAIMER */
.disclaimer-band {
    background: var(--canvas-soft);
    border-top: 1px solid var(--hairline);
    padding: 16px 0;
}

.disclaimer-band p { font-size: 12px; color: var(--muted); line-height: 1.5; }

/* COOKIE BANNER */
.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: var(--radius-lg);
    padding: 20px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    z-index: 999;
    box-shadow: 0 4px 24px rgba(38,37,30,0.18);
}

.cookie-banner p { font-size: 14px; line-height: 1.55; flex: 1; }
.cookie-banner p a { color: var(--primary); text-decoration: underline; text-underline-offset: 2px; }
.cookie-banner-actions { display: flex; gap: 10px; flex-shrink: 0; }

.cookie-accept {
    background: var(--primary);
    color: var(--on-primary);
    font-size: 14px;
    font-weight: 500;
    padding: 9px 16px;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: background 0.15s;
}

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

.cookie-reject {
    background: transparent;
    color: var(--canvas);
    font-size: 14px;
    font-weight: 500;
    padding: 9px 16px;
    border-radius: var(--radius-md);
    border: 1px solid rgba(247,247,244,0.25);
    cursor: pointer;
    transition: border-color 0.15s;
}

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

/* PAGE CONTENT */
.page-content {
    max-width: 780px;
    padding: 60px 0 80px;
}

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

.page-content .page-date { font-size: 13px; color: var(--muted); margin-bottom: 40px; }

.page-content h2 {
    font-size: 24px;
    font-weight: 600;
    color: var(--ink);
    margin: 36px 0 12px;
}

.page-content p { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 16px; }
.page-content ul { margin: 0 0 16px 22px; }
.page-content li { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 6px; }
.page-content a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }

/* BREADCRUMB */
.breadcrumb { display: flex; gap: 8px; align-items: center; font-size: 13px; color: var(--muted); margin-bottom: 24px; }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb-sep { color: var(--hairline-strong); }

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero-band h1 { font-size: 44px; }
    .article-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
    .footer-brand { grid-column: span 3; }
    .contact-grid { gap: 48px; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
    .hero-band { padding: 48px 0 40px; }
    .hero-band h1 { font-size: 32px; letter-spacing: -0.8px; }
    .section { padding: 56px 0; }
    .section-title { font-size: 28px; }
    .featured-article { grid-template-columns: 1fr; }
    .featured-article-img { height: 220px; }
    .featured-article-body { padding: 24px; }
    .article-grid { grid-template-columns: 1fr; }
    .contact-grid { grid-template-columns: 1fr; gap: 40px; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .footer-brand { grid-column: span 2; }
    .related-grid { grid-template-columns: 1fr; }
    .article-header h1 { font-size: 30px; }
    .article-hero-img { height: 220px; }
    .cookie-banner { flex-direction: column; bottom: 16px; width: calc(100% - 32px); }
    .cookie-banner-actions { width: 100%; }
    .cookie-accept, .cookie-reject { flex: 1; text-align: center; }
}

@media (max-width: 480px) {
    .container { padding: 0 16px; }
    .hero-band h1 { font-size: 26px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-brand { grid-column: span 1; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}