@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;
  --semantic-success: #1f8a65;
  --semantic-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: var(--ink); text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

.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; }
.site-nav .container { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.nav-brand { font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: -0.02em; }
.nav-brand span { color: var(--primary); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.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-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; color: var(--ink); }
.nav-toggle svg { width: 20px; height: 20px; }

/* HERO */
.hero { padding: 80px 0; background: var(--canvas); }
.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); padding: 4px 10px; border-radius: var(--radius-pill); margin-bottom: 24px; }
.hero h1 { font-size: 56px; font-weight: 400; line-height: 1.1; letter-spacing: -1.5px; color: var(--ink); max-width: 760px; margin-bottom: 20px; }
.hero-sub { font-size: 18px; color: var(--body); max-width: 560px; line-height: 1.6; margin-bottom: 32px; }
.hero-meta { font-size: 13px; color: var(--muted); }

/* FEATURED IMAGE */
.featured-image { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hairline); margin-top: 48px; }
.featured-image img { width: 100%; max-height: 480px; object-fit: cover; }
.img-caption { font-size: 13px; color: var(--muted); padding: 12px 16px; background: var(--surface-card); border-top: 1px solid var(--hairline-soft); }

/* 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: 32px; }
.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: 600px; line-height: 1.5; margin-bottom: 48px; }
.section-divider { border: none; border-top: 1px solid var(--hairline); margin: 80px 0; }

/* GRID */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* CARD */
.card { background: var(--surface-card); border-radius: var(--radius-lg); border: 1px solid var(--hairline); padding: 24px; }
.card-img { border-radius: var(--radius-md); overflow: hidden; margin-bottom: 20px; border: 1px solid var(--hairline-soft); }
.card-img img { width: 100%; height: 200px; object-fit: cover; }
.card-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 10px; }
.card-title { font-size: 18px; font-weight: 600; color: var(--ink); margin-bottom: 12px; line-height: 1.3; }
.card-title a { color: var(--ink); }
.card-title a:hover { color: var(--primary); }
.card-excerpt { font-size: 14px; color: var(--body); line-height: 1.5; margin-bottom: 16px; }
.card-meta { font-size: 13px; color: var(--muted); }

/* ARTICLE */
.article-header { padding: 64px 0 48px; }
.article-header .breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 24px; }
.article-header .breadcrumb a { color: var(--muted); }
.article-header .breadcrumb a:hover { color: var(--ink); }
.article-header .breadcrumb span { margin: 0 8px; }
.article-tag { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); background: var(--surface-strong); padding: 4px 10px; border-radius: var(--radius-pill); margin-bottom: 20px; }
.article-title { font-size: 46px; font-weight: 400; letter-spacing: -1px; color: var(--ink); line-height: 1.15; max-width: 760px; margin-bottom: 20px; }
.article-desc { font-size: 18px; color: var(--body); max-width: 640px; line-height: 1.6; margin-bottom: 24px; }
.article-meta { font-size: 13px; color: var(--muted); display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.article-meta span { display: flex; align-items: center; gap: 6px; }

.article-body { max-width: 720px; }
.article-body h2 { font-size: 28px; font-weight: 400; letter-spacing: -0.5px; color: var(--ink); margin: 48px 0 16px; line-height: 1.25; }
.article-body h3 { font-size: 20px; font-weight: 600; color: var(--ink); margin: 32px 0 12px; line-height: 1.3; }
.article-body p { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 20px; }
.article-body ul, .article-body ol { margin-bottom: 20px; padding-left: 24px; }
.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: 8px; }
.article-body a { color: var(--primary); text-decoration: underline; text-decoration-color: transparent; transition: text-decoration-color 0.15s; }
.article-body a:hover { text-decoration-color: var(--primary); }
.article-body strong { color: var(--ink); font-weight: 600; }
.article-body table { width: 100%; border-collapse: collapse; margin-bottom: 24px; font-size: 14px; }
.article-body table th { background: var(--surface-strong); color: var(--ink); font-weight: 600; padding: 10px 14px; text-align: left; border: 1px solid var(--hairline); }
.article-body table td { padding: 10px 14px; border: 1px solid var(--hairline); color: var(--body); }
.article-body table tr:nth-child(even) td { background: var(--canvas-soft); }

.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: 32px 0; }
.info-box .info-title { font-size: 13px; font-weight: 600; letter-spacing: 0.5px; text-transform: uppercase; color: var(--primary); margin-bottom: 8px; }
.info-box p { margin: 0; font-size: 15px; color: var(--body); line-height: 1.6; }

.code-block { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: var(--radius-lg); padding: 20px; margin: 24px 0; font-family: 'JetBrains Mono', monospace; font-size: 13px; color: var(--ink); overflow-x: auto; line-height: 1.5; }

/* RELATED */
.related-section { padding: 64px 0; border-top: 1px solid var(--hairline); }
.related-section .section-label { margin-bottom: 24px; }

/* FORM */
.contact-form-section { padding: 80px 0; background: var(--canvas-soft); }
.form-container { max-width: 560px; }
.form-title { font-size: 36px; font-weight: 400; letter-spacing: -0.72px; color: var(--ink); margin-bottom: 8px; }
.form-sub { font-size: 16px; color: var(--body); margin-bottom: 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 { width: 100%; background: var(--surface-card); color: var(--ink); border: 1px solid var(--hairline-strong); border-radius: var(--radius-md); padding: 12px 16px; font-size: 16px; font-family: inherit; height: 44px; outline: none; transition: border-color 0.15s; }
.form-group textarea { height: 120px; 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(--semantic-error); }
.btn-submit { background: var(--primary); color: var(--on-primary); border: none; border-radius: var(--radius-md); padding: 10px 18px; font-size: 14px; font-weight: 500; height: 40px; cursor: pointer; transition: background 0.15s; display: inline-flex; align-items: center; gap: 8px; }
.btn-submit:hover { background: var(--primary-active); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; }
.form-feedback { margin-top: 16px; font-size: 14px; padding: 12px 16px; border-radius: var(--radius-md); display: none; }
.form-feedback.success { background: #e8f5f0; color: var(--semantic-success); border: 1px solid #b3dece; display: block; }
.form-feedback.error { background: #fce8ec; color: var(--semantic-error); border: 1px solid #f5b8c4; 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: 32px; margin-bottom: 48px; }
.footer-brand .nav-brand { font-size: 16px; margin-bottom: 12px; display: block; }
.footer-brand p { font-size: 14px; color: var(--body); line-height: 1.6; max-width: 240px; }
.footer-col h4 { font-size: 13px; font-weight: 600; color: var(--ink); margin-bottom: 16px; letter-spacing: 0.2px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: var(--body); transition: color 0.15s; }
.footer-col ul li 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 a { font-size: 13px; color: var(--muted); }
.footer-bottom a:hover { color: var(--ink); }

/* COOKIE */
#cookie-banner { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); background: var(--ink); color: var(--canvas); border-radius: var(--radius-lg); padding: 20px 24px; max-width: 600px; width: calc(100% - 48px); z-index: 1000; box-shadow: 0 4px 24px rgba(0,0,0,0.15); display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
#cookie-banner p { font-size: 14px; line-height: 1.5; flex: 1; color: var(--canvas); }
#cookie-banner p a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: 10px; flex-shrink: 0; }
.btn-cookie-accept { background: var(--primary); color: var(--on-primary); border: none; border-radius: var(--radius-md); padding: 8px 16px; font-size: 14px; font-weight: 500; cursor: pointer; transition: background 0.15s; }
.btn-cookie-accept:hover { background: var(--primary-active); }
.btn-cookie-reject { background: transparent; color: var(--canvas-soft); border: 1px solid rgba(255,255,255,0.3); border-radius: var(--radius-md); padding: 8px 16px; font-size: 14px; font-weight: 500; cursor: pointer; transition: opacity 0.15s; }
.btn-cookie-reject:hover { opacity: 0.75; }
.hidden { display: none !important; }

/* PAGE CONTENT */
.page-header { padding: 64px 0 48px; border-bottom: 1px solid var(--hairline); }
.page-header h1 { font-size: 46px; font-weight: 400; letter-spacing: -1px; color: var(--ink); margin-bottom: 12px; }
.page-header p { font-size: 16px; color: var(--body); max-width: 560px; }
.page-content { padding: 64px 0; max-width: 760px; }
.page-content h2 { font-size: 26px; font-weight: 400; letter-spacing: -0.3px; color: var(--ink); margin: 40px 0 14px; }
.page-content h3 { font-size: 18px; font-weight: 600; color: var(--ink); margin: 28px 0 10px; }
.page-content p { font-size: 16px; color: var(--body); line-height: 1.7; margin-bottom: 18px; }
.page-content ul { list-style: disc; padding-left: 24px; margin-bottom: 18px; }
.page-content li { font-size: 16px; color: var(--body); line-height: 1.6; margin-bottom: 8px; }
.page-content a { color: var(--primary); }
.last-updated { font-size: 13px; color: var(--muted); margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--hairline); }

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

@media (max-width: 768px) {
  .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: 16px 24px; gap: 16px; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .site-nav { position: relative; }
  .hero { padding: 48px 0; }
  .hero h1 { font-size: 36px; letter-spacing: -0.5px; }
  .article-title { font-size: 32px; }
  .section { padding: 48px 0; }
  .section-title { font-size: 28px; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
  .hero h1 { font-size: 32px; }
  .article-title { font-size: 26px; }
  #cookie-banner { flex-direction: column; align-items: flex-start; }
}