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

:root {
  --canvas: #f7f7f4;
  --canvas-soft: #fafaf7;
  --ink: #26251e;
  --body-color: #5a5852;
  --muted: #807d72;
  --muted-soft: #a09c92;
  --primary: #f54e00;
  --primary-active: #d04200;
  --on-primary: #ffffff;
  --surface-card: #ffffff;
  --surface-strong: #e6e5e0;
  --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 {
  font-family: 'Inter', system-ui, 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-weight: 400;
  background-color: var(--canvas);
  color: var(--body-color);
  line-height: 1.5;
}

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

h1, h2, h3, h4, h5, h6 { color: var(--ink); font-weight: 400; line-height: 1.2; }
h1 { font-size: clamp(36px, 5vw, 64px); letter-spacing: -0.03em; line-height: 1.1; }
h2 { font-size: 36px; letter-spacing: -0.02em; }
h3 { font-size: 26px; letter-spacing: -0.01em; line-height: 1.25; }
h4 { font-size: 20px; letter-spacing: -0.005em; }
p { font-size: 16px; line-height: 1.65; color: var(--body-color); }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }

.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: 100%; }
.nav-logo { font-size: 18px; font-weight: 600; color: var(--ink); letter-spacing: -0.02em; }
.nav-logo span { color: var(--primary); }
.nav-links { display: flex; list-style: none; gap: 28px; align-items: center; }
.nav-links a { font-size: 14px; font-weight: 500; color: var(--ink); transition: color 0.15s; }
.nav-links a:hover { color: var(--primary); }
.nav-hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 4px; }
.nav-hamburger span { display: block; width: 22px; height: 1.5px; background: var(--ink); transition: all 0.2s; }
.nav-mobile { display: none; background: var(--canvas); border-bottom: 1px solid var(--hairline); padding: 16px 24px; }
.nav-mobile.is-open { display: block; }
.nav-mobile ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.nav-mobile a { font-size: 15px; font-weight: 500; color: var(--ink); display: block; padding: 6px 0; border-bottom: 1px solid var(--hairline-soft); }

.hero { padding: 80px 0; border-bottom: 1px solid var(--hairline); }
.hero-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.hero-badge { display: inline-block; font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 20px; }
.hero h1 { margin-bottom: 20px; }
.hero-desc { font-size: 18px; line-height: 1.6; color: var(--body-color); margin-bottom: 0; }
.hero-img { width: 100%; height: 460px; object-fit: cover; border-radius: 12px; border: 1px solid var(--hairline); }

.section { padding: 80px 0; }
.section + .section { border-top: 1px solid var(--hairline); }
.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; color: var(--ink); margin-bottom: 48px; letter-spacing: -0.02em; }
.section-title-sm { font-size: 26px; color: var(--ink); margin-bottom: 32px; letter-spacing: -0.01em; }

.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; transition: border-color 0.15s; }
.article-card:hover { border-color: var(--hairline-strong); }
.article-card img { width: 100%; height: 220px; object-fit: cover; }
.article-card-body { padding: 24px; }
.article-tag { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); margin-bottom: 8px; }
.article-card h3 { font-size: 20px; color: var(--ink); margin-bottom: 10px; line-height: 1.3; }
.article-card p { font-size: 14px; line-height: 1.6; color: var(--body-color); }
.article-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: 14px; font-weight: 500; color: var(--ink); border-bottom: 1px solid var(--hairline-strong); padding-bottom: 2px; transition: color 0.15s, border-color 0.15s; }
.article-link:hover { color: var(--primary); border-color: var(--primary); }

.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature-card { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: 12px; padding: 28px; }
.feature-card h4 { font-size: 17px; font-weight: 600; color: var(--ink); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--body-color); line-height: 1.65; }

.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: center; }
.intro-img { width: 100%; height: 400px; object-fit: cover; border-radius: 12px; border: 1px solid var(--hairline); }
.intro-text h2 { margin-bottom: 20px; }
.intro-text p { margin-bottom: 16px; }

.article-page-header { padding: 64px 0 0; border-bottom: 1px solid var(--hairline); }
.article-meta { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; }
.article-category { font-size: 11px; font-weight: 600; letter-spacing: 0.88px; text-transform: uppercase; color: var(--muted); }
.article-date { font-size: 13px; color: var(--muted-soft); }
.article-page-header h1 { font-size: clamp(28px, 4vw, 52px); margin-bottom: 24px; }
.article-lead { font-size: 19px; line-height: 1.65; color: var(--body-color); margin-bottom: 48px; max-width: 760px; }
.article-hero-img { width: 100%; height: 460px; object-fit: cover; border-radius: 12px; border: 1px solid var(--hairline); margin: 0 0 64px; }

.article-body { display: grid; grid-template-columns: 1fr 300px; gap: 64px; padding: 64px 0 80px; }
.article-content h2 { font-size: 26px; color: var(--ink); margin: 48px 0 18px; }
.article-content h3 { font-size: 20px; color: var(--ink); margin: 36px 0 14px; font-weight: 500; }
.article-content p { font-size: 16px; line-height: 1.75; color: var(--body-color); margin-bottom: 20px; }
.article-content ul, .article-content ol { margin: 0 0 20px 24px; }
.article-content li { font-size: 16px; line-height: 1.65; color: var(--body-color); margin-bottom: 8px; }
.article-content img { width: 100%; border-radius: 8px; border: 1px solid var(--hairline); margin: 32px 0; }
.article-content .img-caption { font-size: 13px; color: var(--muted); margin-top: -24px; margin-bottom: 32px; }
.article-content a { color: var(--ink); border-bottom: 1px solid var(--hairline-strong); }
.article-content a:hover { color: var(--primary); border-color: var(--primary); }

.article-sidebar { border-left: 1px solid var(--hairline); padding-left: 32px; }
.sidebar-box { background: var(--surface-card); border: 1px solid var(--hairline); border-radius: 12px; padding: 24px; margin-bottom: 24px; }
.sidebar-box h4 { font-size: 12px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.7px; color: var(--muted); margin-bottom: 14px; }
.sidebar-links { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.sidebar-links li a { font-size: 14px; color: var(--body-color); line-height: 1.4; }
.sidebar-links li a:hover { color: var(--primary); }

.btn { display: inline-flex; align-items: center; justify-content: center; height: 40px; padding: 0 18px; font-size: 14px; font-weight: 500; border-radius: 8px; border: none; cursor: pointer; transition: background 0.15s, color 0.15s; text-decoration: none; font-family: inherit; }
.btn-primary { background: var(--primary); color: var(--on-primary); }
.btn-primary:hover { background: var(--primary-active); color: var(--on-primary); }
.btn-secondary { background: var(--surface-card); color: var(--ink); border: 1px solid var(--hairline-strong); }
.btn-secondary:hover { border-color: var(--ink); color: var(--ink); }
.btn-ink { background: var(--ink); color: var(--canvas); height: 44px; padding: 0 20px; }
.btn-ink:hover { background: #3a3930; color: var(--canvas); }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--ink); margin-bottom: 6px; }
.form-control { width: 100%; height: 44px; padding: 0 16px; font-size: 15px; font-family: inherit; background: var(--surface-card); color: var(--ink); border: 1px solid var(--hairline-strong); border-radius: 8px; outline: none; transition: border-color 0.15s; }
.form-control:focus { border-color: var(--ink); }
.form-control.error-field { border-color: var(--error); }
textarea.form-control { height: auto; padding: 12px 16px; resize: vertical; min-height: 120px; }
.form-error { font-size: 13px; color: var(--error); margin-top: 4px; display: none; }
.form-success { padding: 16px; background: #e7f5f0; color: var(--success); border-radius: 8px; font-size: 15px; display: none; border: 1px solid #b8e0d4; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: start; }
.contact-info h3 { font-size: 24px; margin-bottom: 16px; }
.contact-info p { font-size: 15px; line-height: 1.7; color: var(--body-color); margin-bottom: 20px; }
.contact-detail { display: flex; flex-direction: column; gap: 8px; margin-top: 24px; }
.contact-detail span { font-size: 14px; color: var(--body-color); }
.contact-detail strong { color: var(--ink); }

.page-header { padding: 80px 0 48px; border-bottom: 1px solid var(--hairline); }
.page-header h1 { font-size: clamp(32px, 4vw, 52px); margin-bottom: 16px; }
.page-header p { font-size: 18px; color: var(--muted); max-width: 600px; }

.page-content { padding: 64px 0; max-width: 800px; }
.page-content h2 { font-size: 24px; color: var(--ink); margin: 40px 0 14px; }
.page-content h3 { font-size: 19px; color: var(--ink); margin: 30px 0 10px; font-weight: 500; }
.page-content p { font-size: 16px; line-height: 1.75; color: var(--body-color); margin-bottom: 18px; }
.page-content ul { margin: 0 0 18px 24px; }
.page-content li { font-size: 16px; line-height: 1.65; color: var(--body-color); margin-bottom: 6px; }
.page-content a { color: var(--ink); border-bottom: 1px solid var(--hairline-strong); }
.page-content a:hover { color: var(--primary); }

.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; gap: 48px; margin-bottom: 48px; }
.footer-brand h3 { font-size: 17px; font-weight: 600; color: var(--ink); margin-bottom: 10px; }
.footer-brand p { font-size: 14px; color: var(--muted); line-height: 1.6; max-width: 260px; }
.footer-col h4 { font-size: 12px; font-weight: 600; letter-spacing: 0.7px; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col ul a { font-size: 14px; color: var(--body-color); 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; }
.footer-bottom p { font-size: 13px; color: var(--muted); }

.cookie-banner { position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); width: calc(100% - 48px); max-width: 720px; background: var(--ink); border-radius: 12px; padding: 20px 24px; display: none; align-items: center; justify-content: space-between; gap: 24px; z-index: 1000; }
.cookie-banner p { font-size: 14px; color: var(--canvas); line-height: 1.5; }
.cookie-banner a { color: var(--canvas); text-decoration: underline; }
.cookie-actions { display: flex; gap: 8px; flex-shrink: 0; }
.cookie-accept { background: var(--primary); color: #fff; border: none; border-radius: 8px; padding: 8px 16px; font-size: 14px; font-weight: 500; cursor: pointer; font-family: inherit; }
.cookie-reject { background: transparent; color: var(--canvas); border: 1px solid rgba(255,255,255,0.3); border-radius: 8px; padding: 8px 16px; font-size: 14px; font-weight: 500; cursor: pointer; font-family: inherit; }
.cookie-reject:hover { border-color: rgba(255,255,255,0.7); }

hr.sep { border: none; border-top: 1px solid var(--hairline); margin: 40px 0; }

@media (max-width: 1024px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .article-body { grid-template-columns: 1fr; }
  .article-sidebar { border-left: none; padding-left: 0; border-top: 1px solid var(--hairline); padding-top: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  .intro-grid { grid-template-columns: 1fr; gap: 40px; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  h2 { font-size: 26px; }
  .hero { padding: 48px 0; }
  .section { padding: 56px 0; }
  .articles-grid { grid-template-columns: 1fr; }
  .features-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
  .cookie-banner { flex-direction: column; align-items: flex-start; bottom: 0; border-radius: 12px 12px 0 0; width: 100%; max-width: 100%; left: 0; transform: none; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .hero-img { height: 260px; }
  .article-hero-img { height: 220px; }
  .footer-grid { grid-template-columns: 1fr; }
}