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

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;
}

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

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.nav-logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: -0.3px;
    line-height: 1.4;
}

.nav-logo 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);
    line-height: 1.4;
    transition: color 0.15s;
}

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

.nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    background: none;
    border: none;
}

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

.mobile-menu {
    display: none;
    background: var(--canvas);
    border-bottom: 1px solid var(--hairline);
    padding: 16px 24px;
}

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

.mobile-menu ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.mobile-menu a {
    font-size: 15px;
    font-weight: 500;
    color: var(--body);
}

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

.hero-label {
    display: inline-block;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    background: var(--surface-strong);
    border-radius: 9999px;
    padding: 4px 10px;
    margin-bottom: 24px;
}

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

.hero-sub {
    font-size: 18px;
    color: var(--body);
    line-height: 1.5;
    max-width: 560px;
    margin-bottom: 40px;
}

.hero-image {
    margin-top: 48px;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
    background: var(--surface-card);
}

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

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

.section-label {
    display: inline-block;
    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;
    line-height: 1.2;
    letter-spacing: -0.72px;
    color: var(--ink);
    margin-bottom: 16px;
}

.section-sub {
    font-size: 16px;
    color: var(--body);
    line-height: 1.5;
    max-width: 600px;
    margin-bottom: 48px;
}

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

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

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

.card-img {
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 16px;
    border: 1px solid var(--hairline-soft);
}

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

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

.card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    line-height: 1.4;
    margin-bottom: 8px;
}

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

.card-link {
    display: inline-block;
    margin-top: 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--primary);
}

/* ARTICLE CARD */
.article-card {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    overflow: hidden;
}

.article-card-img {
    height: 220px;
    overflow: hidden;
}

.article-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.article-card:hover .article-card-img img {
    transform: scale(1.03);
}

.article-card-body {
    padding: 24px;
}

.article-card-body .card-label {
    display: block;
    margin-bottom: 8px;
}

.article-card-body h3 {
    font-size: 20px;
    font-weight: 400;
    letter-spacing: -0.11px;
    color: var(--ink);
    line-height: 1.3;
    margin-bottom: 10px;
}

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

.article-card-body a {
    display: inline-block;
    margin-top: 16px;
    font-size: 13px;
    font-weight: 500;
    color: var(--primary);
    border: 1px solid var(--primary);
    border-radius: 8px;
    padding: 6px 14px;
    transition: background 0.15s, color 0.15s;
}

.article-card-body a:hover {
    background: var(--primary);
    color: var(--on-primary);
}

/* INFO BLOCKS */
.info-block {
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 32px;
    margin-bottom: 24px;
}

.info-block h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    line-height: 1.25;
    margin-bottom: 16px;
}

.info-block h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin: 24px 0 12px;
}

.info-block p {
    font-size: 16px;
    color: var(--body);
    line-height: 1.5;
    margin-bottom: 12px;
}

.info-block ul, .info-block ol {
    padding-left: 20px;
    margin-bottom: 12px;
}

.info-block li {
    font-size: 15px;
    color: var(--body);
    line-height: 1.6;
    margin-bottom: 6px;
}

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

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

.article-header h1 {
    font-size: 48px;
    font-weight: 400;
    letter-spacing: -1.2px;
    color: var(--ink);
    line-height: 1.15;
    margin-bottom: 16px;
}

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

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

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

.article-featured-img {
    margin: 48px 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--hairline);
}

.article-featured-img img {
    width: 100%;
    max-height: 520px;
    object-fit: cover;
}

.article-content {
    max-width: 740px;
    margin: 0 auto;
}

.article-content h2 {
    font-size: 28px;
    font-weight: 400;
    letter-spacing: -0.5px;
    color: var(--ink);
    line-height: 1.3;
    margin: 48px 0 16px;
}

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

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

.article-content ul, .article-content ol {
    padding-left: 22px;
    margin-bottom: 16px;
}

.article-content li {
    font-size: 16px;
    color: var(--body);
    line-height: 1.7;
    margin-bottom: 8px;
}

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

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

.article-content .highlight-box p {
    margin-bottom: 0;
    font-size: 15px;
}

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

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

.article-content td {
    padding: 10px 14px;
    border: 1px solid var(--hairline);
    color: var(--body);
    background: var(--surface-card);
}

/* FEATURES GRID */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 48px;
}

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

.feature-icon {
    font-size: 28px;
    margin-bottom: 16px;
}

.feature-item h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 8px;
}

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

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

.contact-form {
    max-width: 560px;
    background: var(--surface-card);
    border: 1px solid var(--hairline);
    border-radius: 12px;
    padding: 40px;
}

.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,
.form-group select {
    width: 100%;
    background: var(--surface-card);
    border: 1px solid var(--hairline-strong);
    border-radius: 8px;
    padding: 12px 16px;
    height: 44px;
    font-family: inherit;
    font-size: 15px;
    color: var(--ink);
    outline: none;
    transition: border-color 0.15s;
}

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

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

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

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

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

.btn-secondary {
    display: inline-block;
    background: var(--surface-card);
    color: var(--ink);
    font-size: 14px;
    font-weight: 500;
    padding: 10px 18px;
    height: 40px;
    border-radius: 8px;
    border: 1px solid var(--hairline-strong);
    cursor: pointer;
    font-family: inherit;
    line-height: 1;
    transition: border-color 0.15s;
}

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

.form-status {
    display: none;
    margin-top: 16px;
    padding: 12px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
}

.form-status.success {
    background: #e8f5f0;
    color: var(--semantic-success);
    border: 1px solid #b8ddd1;
}

.form-status.loading {
    background: var(--surface-strong);
    color: var(--muted);
}

/* COOKIE BANNER */
#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--ink);
    color: var(--canvas);
    padding: 20px 24px;
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

#cookie-banner p {
    font-size: 14px;
    color: var(--canvas);
    line-height: 1.5;
    flex: 1;
}

#cookie-banner a {
    color: var(--primary);
    text-decoration: underline;
}

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

.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;
    font-family: inherit;
}

.cookie-reject {
    background: transparent;
    color: var(--canvas);
    border: 1px solid rgba(247,247,244,0.3);
    border-radius: 8px;
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    font-family: inherit;
}

/* 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: 32px;
    margin-bottom: 48px;
}

.footer-brand h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
}

.footer-brand h2 span {
    color: var(--primary);
}

.footer-brand p {
    font-size: 14px;
    color: var(--body);
    line-height: 1.5;
    max-width: 220px;
}

.footer-col h4 {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.88px;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
}

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

.footer-col a {
    font-size: 14px;
    color: var(--body);
    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-bottom a {
    font-size: 13px;
    color: var(--muted);
}

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

/* PAGE HEADER */
.page-header {
    padding: 64px 0;
    border-bottom: 1px solid var(--hairline-soft);
}

.page-header h1 {
    font-size: 48px;
    font-weight: 400;
    letter-spacing: -1.2px;
    color: var(--ink);
    line-height: 1.15;
    margin-bottom: 12px;
}

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

/* BREADCRUMB */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.breadcrumb a,
.breadcrumb span {
    font-size: 13px;
    color: var(--muted);
}

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

.breadcrumb .sep {
    color: var(--hairline-strong);
}

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

.related-section h2 {
    font-size: 26px;
    font-weight: 400;
    letter-spacing: -0.325px;
    color: var(--ink);
    margin-bottom: 32px;
}

/* UTILITY */
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mb-0 { margin-bottom: 0; }
.updated-date {
    font-size: 13px;
    color: var(--muted);
    margin-top: 8px;
}

/* SCHEMA DISCLAIMER */
.disclaimer {
    background: var(--surface-strong);
    border-radius: 8px;
    padding: 16px 20px;
    margin-top: 24px;
}

.disclaimer p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.5;
    margin: 0;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
    .hero h1 { font-size: 56px; letter-spacing: -1.5px; }
    .cards-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr 1fr; }
    .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }
    .hero { padding: 48px 0; }
    .hero h1 { font-size: 36px; letter-spacing: -0.8px; }
    .section { padding: 48px 0; }
    .section-title { font-size: 28px; }
    .cards-grid { grid-template-columns: 1fr; }
    .cards-grid-2 { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .article-header h1 { font-size: 32px; letter-spacing: -0.5px; }
    .page-header h1 { font-size: 32px; }
    #cookie-banner { flex-direction: column; align-items: flex-start; }
    .contact-form { padding: 24px; }
}

@media (max-width: 640px) {
    .container { padding: 0 16px; }
    .footer-grid { grid-template-columns: 1fr; }
    .footer-bottom { flex-direction: column; align-items: flex-start; }
}