/* ============================================================
   «Вне Шаблона» — main.css (дизайн v3)
   ============================================================ */

:root {
  --vs-green: #4A7C59;
  --vs-green-dark: #2D5A3D;
  --vs-forest: #1F3A2E;
  --vs-bg: #F7F9F5;
  --vs-card: #FFFFFF;
  --vs-soft: #E8F0E5;
  --vs-text: #1F2D26;
  --vs-muted: #5C6B62;
  --vs-blue: #6B9BD1;
  --vs-blue-dark: #4A7BA8;
  --vs-border: #D9E2D9;
  --vs-shadow: 0 1px 3px rgba(31, 58, 46, 0.06), 0 1px 2px rgba(31, 58, 46, 0.04);
  --vs-shadow-hover: 0 8px 24px rgba(31, 58, 46, 0.12), 0 4px 8px rgba(31, 58, 46, 0.06);
  --vs-radius: 12px;
  --vs-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --vs-max-width: 1200px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--vs-bg);
  color: var(--vs-text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: 'PT Serif', Georgia, serif;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

a { color: var(--vs-blue-dark); text-decoration: none; transition: color var(--vs-transition); }
a:hover { color: var(--vs-green-dark); }

.container { max-width: var(--vs-max-width); margin: 0 auto; padding: 0 24px; }
.container.narrow { max-width: 780px; }
.page-wrap { padding: 60px 0; }

/* ====== SCROLL ANIMATIONS ====== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease-out, transform 0.7s ease-out; }
.fade-in.visible { opacity: 1; transform: translateY(0); }
.fade-in.delay-1 { transition-delay: 0.1s; }
.fade-in.delay-2 { transition-delay: 0.2s; }
.fade-in.delay-3 { transition-delay: 0.3s; }
.fade-in.delay-4 { transition-delay: 0.4s; }

/* ====== HEADER ====== */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(247, 249, 245, 0.95);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--vs-border);
  transition: background 0.3s ease, border-color 0.3s ease;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; padding-top: 14px; padding-bottom: 14px; }
.site-logo { display: flex; align-items: center; gap: 12px; font-family: 'PT Serif', serif; font-size: 22px; font-weight: 700; color: var(--vs-text); }
.site-logo-img {
  width: 40px; height: 40px; border-radius: 8px;
  background: linear-gradient(135deg, var(--vs-green) 0%, var(--vs-green-dark) 100%);
  display: flex; align-items: center; justify-content: center; font-size: 22px;
}
.site-nav { display: flex; gap: 32px; align-items: center; }
.site-nav a { color: var(--vs-text); font-size: 15px; font-weight: 500; }
.site-nav a:hover { color: var(--vs-green); }
.site-nav .nav-cta { background: var(--vs-green); color: #FFFFFF !important; padding: 10px 20px; border-radius: 8px; transition: all var(--vs-transition); }
.site-nav .nav-cta:hover { background: var(--vs-green-dark); transform: translateY(-1px); }

/* ====== HERO ====== */
.hero { padding: 80px 0 100px; position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; top: -50%; right: -10%; width: 600px; height: 600px; background: radial-gradient(circle, rgba(74, 124, 89, 0.08) 0%, transparent 70%); pointer-events: none; }
.hero::after { content: ""; position: absolute; bottom: -30%; left: -10%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(107, 155, 209, 0.08) 0%, transparent 70%); pointer-events: none; }
.hero-blob {
  position: absolute; top: 20%; right: 5%; width: 300px; height: 300px;
  background: linear-gradient(135deg, var(--vs-green) 0%, var(--vs-blue) 100%);
  border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%;
  opacity: 0.1; animation: blob-morph 8s ease-in-out infinite; pointer-events: none;
}
@keyframes blob-morph {
  0%, 100% { border-radius: 63% 37% 54% 46% / 55% 48% 52% 45%; }
  50% { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; }
}
.hero .container { position: relative; z-index: 1; display: grid; grid-template-columns: 1.2fr 1fr; gap: 60px; align-items: center; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: var(--vs-soft); color: var(--vs-green-dark); padding: 6px 14px; border-radius: 999px; font-size: 13px; font-weight: 600; margin-bottom: 24px; }
.hero-badge::before { content: "●"; color: var(--vs-green); font-size: 8px; animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero h1 { font-size: 56px; line-height: 1.1; margin-bottom: 24px; }
.hero h1 .accent { color: var(--vs-green); font-style: italic; }
.hero-subtitle { font-size: 19px; color: var(--vs-muted); margin-bottom: 36px; max-width: 540px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 16px 28px;
  border-radius: 10px; font-size: 15px; font-weight: 600; font-family: 'Inter', sans-serif;
  border: none; cursor: pointer; transition: all var(--vs-transition); letter-spacing: -0.01em;
}
.btn-primary { background: var(--vs-green); color: #FFFFFF; }
.btn-primary:hover { background: var(--vs-green-dark); color: #FFFFFF; transform: translateY(-2px); box-shadow: 0 10px 20px rgba(74, 124, 89, 0.25); }
.btn-secondary { background: transparent; color: var(--vs-text); border: 2px solid var(--vs-border); }
.btn-secondary:hover { border-color: var(--vs-green); color: var(--vs-green-dark); background: var(--vs-soft); }

/* Hero card */
.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; will-change: transform; }
.hero-card {
  background: var(--vs-forest); border-radius: 20px; padding: 36px; width: 100%; max-width: 420px;
  color: #F7F9F5; position: relative; box-shadow: 0 20px 40px rgba(31, 58, 46, 0.2); overflow: hidden;
}
.hero-card::before { content: ""; position: absolute; top: -20px; right: -20px; width: 100px; height: 100px; background: var(--vs-blue); border-radius: 50%; opacity: 0.25; filter: blur(40px); animation: float 6s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translate(0, 0) scale(1); } 50% { transform: translate(-10px, 10px) scale(1.1); } }
.hero-card-label { display: inline-flex; align-items: center; gap: 8px; background: rgba(143, 171, 148, 0.2); color: #8FAB94; padding: 6px 12px; border-radius: 4px; font-size: 12px; font-weight: 600; margin-bottom: 14px; letter-spacing: 0.05em; font-family: 'JetBrains Mono', monospace; }
.hero-card-label::before { content: "●"; color: #8FAB94; font-size: 8px; animation: pulse 1.5s ease-in-out infinite; }
.hero-card h3 { color: #F7F9F5; font-size: 20px; margin-bottom: 16px; }
.hero-card-metric { font-family: 'JetBrains Mono', monospace; font-size: 32px; font-weight: 700; color: #8FAB94; margin-bottom: 4px; transition: opacity 0.3s ease; letter-spacing: -0.02em; }
.hero-card-metric.updating { opacity: 0.5; }
.hero-card-desc { font-size: 13px; color: rgba(247, 249, 245, 0.7); margin-bottom: 16px; }
.hero-card-chart { margin-bottom: 18px; padding-top: 12px; border-top: 1px solid rgba(143, 171, 148, 0.2); cursor: crosshair; }
.hero-card-chart svg { display: block; width: 100%; height: 40px; }
.hero-card-chart .chart-label { display: block; font-size: 11px; color: rgba(247, 249, 245, 0.5); margin-top: 4px; }
.hero-card-chart:hover .chart-label { color: rgba(247, 249, 245, 0.7); }
.hero-card-features { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.hero-card-features li { font-size: 13px; color: rgba(247, 249, 245, 0.85); padding-left: 18px; position: relative; line-height: 1.5; }
.hero-card-features li::before { content: "→"; position: absolute; left: 0; color: #8FAB94; font-weight: 700; }

/* Sparkline tooltip */
.sparkline-tooltip {
  position: absolute; background: var(--vs-forest); color: #F7F9F5; padding: 6px 10px;
  border-radius: 4px; font-size: 12px; font-family: 'JetBrains Mono', monospace;
  pointer-events: none; opacity: 0; transition: opacity 0.2s ease; z-index: 1000;
  white-space: nowrap; box-shadow: 0 4px 12px rgba(31, 58, 46, 0.2);
}
.sparkline-tooltip::after { content: ""; position: absolute; bottom: -4px; left: 12px; width: 8px; height: 8px; background: var(--vs-forest); transform: rotate(45deg); }

/* ====== SECTIONS ====== */
.section { padding: 80px 0; }
.section-title { text-align: center; margin-bottom: 56px; }
.section-title h2 { font-size: 38px; margin-bottom: 12px; }
.section-title p { font-size: 17px; color: var(--vs-muted); max-width: 600px; margin: 0 auto; }

/* ====== TOOLS (Bento) ====== */
.tools-grid { display: grid; grid-template-columns: 2fr 1fr; grid-template-rows: auto auto; gap: 24px; }
.tool-card {
  background: var(--vs-card); border-radius: var(--vs-radius); padding: 36px 32px;
  border: 1px solid var(--vs-border); transition: all var(--vs-transition);
  display: flex; flex-direction: column; position: relative; overflow: hidden;
}
.tool-card::before { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--vs-green); transform: scaleX(0); transform-origin: left; transition: transform var(--vs-transition); }
.tool-card:hover { transform: translateY(-4px); box-shadow: var(--vs-shadow-hover); border-color: var(--vs-green); }
.tool-card:hover::before { transform: scaleX(1); }
.tool-card.featured { background: var(--vs-forest); color: #F7F9F5; border: none; grid-column: 1 / 2; grid-row: 1 / 3; padding: 48px 40px; }
.tool-card.featured::before { background: var(--vs-blue); }
.tool-card.featured .tool-icon { background: rgba(143, 171, 148, 0.2); width: 64px; height: 64px; font-size: 32px; }
.tool-card.featured h3 { color: #F7F9F5; font-size: 28px; margin-bottom: 16px; }
.tool-card.featured p { color: rgba(247, 249, 245, 0.85); font-size: 16px; }
.tool-card.featured .tool-link { color: #8FAB94; }
.tool-card.featured .tool-link:hover { color: #F7F9F5; }
.tool-card.featured .tool-features { list-style: none; display: flex; flex-direction: column; gap: 8px; margin-bottom: 24px; }
.tool-card.featured .tool-features li { font-size: 14px; color: rgba(247, 249, 245, 0.8); padding-left: 18px; position: relative; }
.tool-card.featured .tool-features li::before { content: "→"; position: absolute; left: 0; color: #8FAB94; font-weight: 700; }
.tool-icon { width: 56px; height: 56px; background: var(--vs-soft); border-radius: 12px; display: flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: 20px; }
.tool-card h3 { font-size: 22px; margin-bottom: 12px; }
.tool-card p { font-size: 15px; color: var(--vs-muted); line-height: 1.6; margin-bottom: 24px; flex-grow: 1; }
.tool-link { font-size: 14px; font-weight: 600; color: var(--vs-green-dark); display: inline-flex; align-items: center; gap: 6px; transition: gap var(--vs-transition); }
.tool-link:hover { gap: 10px; }
.tool-link::after { content: "→"; font-weight: 700; }

/* ====== WHY ====== */
.why { background: var(--vs-soft); }
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.why-icon { width: 48px; height: 48px; background: var(--vs-card); border-radius: 10px; display: flex; align-items: center; justify-content: center; font-size: 24px; margin-bottom: 16px; box-shadow: var(--vs-shadow); }
.why-card h4 { font-size: 17px; margin-bottom: 8px; }
.why-card p { font-size: 14px; color: var(--vs-muted); line-height: 1.55; }

/* ====== TEXTBOOK ====== */
.textbook-tabs { display: flex; gap: 8px; margin-bottom: 32px; border-bottom: 2px solid var(--vs-border); overflow-x: auto; }
.textbook-tab {
  padding: 14px 20px; background: transparent; border: none; font-family: 'Inter', sans-serif;
  font-size: 15px; font-weight: 600; color: var(--vs-muted); cursor: pointer;
  border-bottom: 3px solid transparent; margin-bottom: -2px; white-space: nowrap; transition: all var(--vs-transition);
}
.textbook-tab:hover { color: var(--vs-text); }
.textbook-tab.active { color: var(--vs-green-dark); border-bottom-color: var(--vs-green); }
.textbook-tab:focus-visible { outline: 3px solid var(--vs-blue); outline-offset: 2px; border-radius: 4px; }
.textbook-content { background: var(--vs-card); border-radius: var(--vs-radius); padding: 40px; border: 1px solid var(--vs-border); transition: opacity 0.3s ease; }
.textbook-content.updating { opacity: 0.5; }
.module-info { margin-bottom: 28px; padding-bottom: 24px; border-bottom: 1px solid var(--vs-border); }
.module-info h3 { font-size: 24px; margin-bottom: 8px; display: flex; align-items: center; gap: 12px; }
.module-num { display: inline-flex; align-items: center; justify-content: center; width: 32px; height: 32px; background: var(--vs-green); color: #FFFFFF; border-radius: 50%; font-family: 'Inter', sans-serif; font-size: 14px; font-weight: 700; flex-shrink: 0; }
.module-goal { font-size: 15px; color: var(--vs-muted); font-style: italic; }
.module-goal strong { color: var(--vs-green-dark); font-style: normal; }
.chapter-list { list-style: none; display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }
.chapter-list li { display: flex; gap: 12px; padding: 14px; border-radius: 8px; background: var(--vs-bg); transition: all var(--vs-transition); }
.chapter-list li:hover { background: var(--vs-soft); transform: translateX(2px); }
.chapter-check { flex-shrink: 0; width: 20px; height: 20px; background: var(--vs-soft); color: var(--vs-green-dark); border-radius: 4px; display: flex; align-items: center; justify-content: center; font-size: 12px; font-weight: 700; margin-top: 2px; }
.chapter-info a { display: block; font-size: 14px; font-weight: 600; color: var(--vs-text); margin-bottom: 2px; line-height: 1.4; }
.chapter-info a:hover { color: var(--vs-green-dark); }
.chapter-info span { font-size: 12px; color: var(--vs-muted); }

/* ====== LATEST POSTS ====== */
.posts-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.post-card { background: var(--vs-card); border-radius: var(--vs-radius); padding: 28px; border: 1px solid var(--vs-border); transition: all var(--vs-transition); display: flex; flex-direction: column; }
.post-card:hover { transform: translateY(-4px); box-shadow: var(--vs-shadow-hover); border-color: var(--vs-green); }
.post-card-category { display: inline-block; font-size: 12px; font-weight: 600; color: var(--vs-green-dark); background: var(--vs-soft); padding: 4px 10px; border-radius: 4px; margin-bottom: 12px; align-self: flex-start; }
.post-card h3 { font-size: 18px; margin-bottom: 12px; line-height: 1.35; }
.post-card p { font-size: 14px; color: var(--vs-muted); line-height: 1.55; margin-bottom: 16px; flex-grow: 1; }
.post-card-meta { display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: var(--vs-muted); margin-bottom: 16px; }
.post-card-link { font-size: 14px; font-weight: 600; color: var(--vs-green-dark); display: inline-flex; align-items: center; gap: 6px; transition: gap var(--vs-transition); }
.post-card-link:hover { gap: 10px; }
.post-card-link::after { content: "→"; font-weight: 700; }

/* ====== ABOUT AUTHOR ====== */
.about-author { background: var(--vs-card); }
.about-author .container { display: grid; grid-template-columns: 280px 1fr; gap: 48px; align-items: center; }
.author-avatar {
  width: 240px; height: 240px; border-radius: 50%;
  background: linear-gradient(135deg, var(--vs-green) 0%, var(--vs-green-dark) 100%);
  display: flex; align-items: center; justify-content: center; font-size: 100px;
  position: relative; box-shadow: 0 20px 40px rgba(31, 58, 46, 0.15);
}
.author-avatar::after { content: ""; position: absolute; inset: -8px; border-radius: 50%; border: 2px solid var(--vs-soft); }
.author-info h2 { font-size: 32px; margin-bottom: 8px; }
.author-role { font-size: 15px; color: var(--vs-green-dark); font-weight: 600; margin-bottom: 20px; display: inline-block; background: var(--vs-soft); padding: 4px 12px; border-radius: 4px; }
.author-bio { font-size: 16px; line-height: 1.7; margin-bottom: 24px; }
.author-stats { display: flex; gap: 32px; padding-top: 24px; border-top: 1px solid var(--vs-border); }
.author-stat { display: flex; flex-direction: column; }
.author-stat-num { font-family: 'PT Serif', serif; font-size: 28px; font-weight: 700; color: var(--vs-green); }
.author-stat-label { font-size: 13px; color: var(--vs-muted); }

/* ====== NEWSLETTER ====== */
.newsletter { background: var(--vs-forest); color: #F7F9F5; padding: 64px 0; text-align: center; }
.newsletter h2 { font-size: 32px; color: #F7F9F5; margin-bottom: 12px; }
.newsletter .container > p { font-size: 16px; color: rgba(247, 249, 245, 0.7); margin-bottom: 32px; }
.newsletter-form { display: flex; gap: 12px; max-width: 480px; margin: 0 auto; }
.newsletter-input {
  flex: 1; padding: 14px 18px; font-size: 15px; border: 2px solid rgba(143, 171, 148, 0.3);
  border-radius: 10px; background: rgba(247, 249, 245, 0.05); color: #F7F9F5;
  font-family: 'Inter', sans-serif; transition: all var(--vs-transition);
}
.newsletter-input::placeholder { color: rgba(247, 249, 245, 0.4); }
.newsletter-input:focus { outline: none; border-color: var(--vs-blue); background: rgba(247, 249, 245, 0.1); }
.newsletter-form .btn-primary { white-space: nowrap; }
.newsletter-note { font-size: 13px; color: rgba(247, 249, 245, 0.5); margin-top: 16px; }

/* ====== FOOTER ====== */
.site-footer { background: var(--vs-forest); color: rgba(247, 249, 245, 0.8); padding: 64px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; margin-bottom: 48px; }
.footer-brand h3 { color: #F7F9F5; font-size: 22px; margin-bottom: 12px; }
.footer-brand p { font-size: 14px; line-height: 1.6; max-width: 320px; }
.footer-col h4 { color: #F7F9F5; font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 16px; font-family: 'Inter', sans-serif; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: rgba(247, 249, 245, 0.7); font-size: 14px; }
.footer-col a:hover { color: #8FAB94; }
.footer-bottom { padding-top: 24px; border-top: 1px solid rgba(143, 171, 148, 0.2); display: flex; justify-content: space-between; align-items: center; font-size: 13px; color: rgba(247, 249, 245, 0.5); }
.footer-disclaimer { background: rgba(139, 90, 43, 0.15); border: 1px solid rgba(139, 90, 43, 0.3); border-radius: 8px; padding: 14px 18px; font-size: 12px; color: rgba(247, 249, 245, 0.7); margin-bottom: 24px; }
.footer-disclaimer strong { color: #D4A574; font-weight: 700; }

/* ====== СТАТЬИ (single.php) ====== */
.breadcrumbs { font-size: 13px; color: var(--vs-muted); margin-bottom: 24px; }
.post-header h1 { font-size: 40px; margin-bottom: 16px; }
.post-meta { display: flex; gap: 20px; flex-wrap: wrap; font-size: 14px; color: var(--vs-muted); padding-bottom: 24px; margin-bottom: 32px; border-bottom: 1px solid var(--vs-border); }
.post-content { font-size: 17px; line-height: 1.75; }
.post-content h2 { font-size: 28px; margin: 40px 0 16px; }
.post-content h3 { font-size: 22px; margin: 32px 0 12px; }
.post-content p { margin-bottom: 18px; }
.post-content ul, .post-content ol { margin: 0 0 18px 24px; }
.post-content li { margin-bottom: 8px; }
.post-content blockquote { border-left: 4px solid var(--vs-green); background: var(--vs-soft); padding: 16px 20px; border-radius: 0 8px 8px 0; margin: 24px 0; font-style: italic; }
.post-content table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.post-content th, .post-content td { border: 1px solid var(--vs-border); padding: 10px 14px; text-align: left; }
.post-content th { background: var(--vs-soft); }
.related { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--vs-border); }
.related h3 { font-size: 24px; margin-bottom: 20px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.related-card { display: flex; flex-direction: column; gap: 8px; background: var(--vs-card); border: 1px solid var(--vs-border); border-radius: var(--vs-radius); padding: 20px; color: var(--vs-text); transition: all var(--vs-transition); }
.related-card:hover { transform: translateY(-3px); box-shadow: var(--vs-shadow-hover); border-color: var(--vs-green); }
.related-card span { font-size: 13px; color: var(--vs-muted); }

/* ====== DARK MODE ====== */
@media (prefers-color-scheme: dark) {
  :root {
    --vs-bg: #1F2D26; --vs-text: #F7F9F5; --vs-card: #2D5A3D;
    --vs-soft: #1F3A2E; --vs-border: #4A7C59; --vs-muted: #8FAB94;
  }
  .site-header { background: rgba(31, 45, 38, 0.95); border-bottom-color: rgba(74, 124, 89, 0.3); }
  .hero::before { background: radial-gradient(circle, rgba(143, 171, 148, 0.1) 0%, transparent 70%); }
  .hero::after { background: radial-gradient(circle, rgba(107, 155, 209, 0.1) 0%, transparent 70%); }
  .chapter-list li { background: var(--vs-soft); }
  .why-icon { background: var(--vs-soft); }
}

/* ====== АДАПТИВ ====== */
@media (max-width: 968px) {
  .hero .container, .about-author .container { grid-template-columns: 1fr; gap: 40px; }
  .hero h1 { font-size: 42px; }
    .tools-grid, .posts-grid, .chapter-list { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
}

/* ====== XG КАЛЬКУЛЯТОР ====== */
.vs-calc {
  max-width: 900px;
  margin: 0 auto;
  background: var(--vs-card);
  border: 1px solid var(--vs-border);
  border-radius: var(--vs-radius);
  padding: 40px;
}
.vs-calc h2 {
  font-size: 32px;
  margin-bottom: 12px;
  color: var(--vs-text);
}
.vs-calc-desc {
  font-size: 15px;
  color: var(--vs-muted);
  line-height: 1.6;
  margin-bottom: 32px;
}
.vs-calc-section {
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--vs-border);
}
.vs-calc-section:last-of-type {
  border-bottom: none;
}
.vs-calc-section h3 {
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--vs-text);
}
.vs-calc-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
}
.vs-calc-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.vs-calc-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--vs-muted);
}
.vs-calc-field input {
  padding: 12px 14px;
  border: 2px solid var(--vs-border);
  border-radius: 8px;
  font-size: 15px;
  font-family: 'JetBrains Mono', monospace;
  background: var(--vs-bg);
  color: var(--vs-text);
  transition: border-color var(--vs-transition);
}
.vs-calc-field input:focus {
  outline: none;
  border-color: var(--vs-green);
}
.vs-calc .btn-lg {
  width: 100%;
  margin-top: 24px;
  padding: 16px;
  font-size: 16px;
}
.vs-calc-result {
  margin-top: 32px;
}
.vs-calc-success {
  background: var(--vs-soft);
  border: 2px solid var(--vs-green);
  border-radius: var(--vs-radius);
  padding: 28px;
}
.vs-calc-success h3 {
  font-size: 22px;
  color: var(--vs-green-dark);
  margin-bottom: 20px;
}
.vs-calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}
.vs-calc-stat {
  background: var(--vs-card);
  border-radius: 8px;
  padding: 16px;
  text-align: center;
}
.vs-calc-stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--vs-green);
  font-family: 'JetBrains Mono', monospace;
  margin-bottom: 4px;
}
.vs-calc-stat-label {
  font-size: 12px;
  color: var(--vs-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.vs-calc-method {
  font-size: 13px;
  color: var(--vs-muted);
  font-style: italic;
  margin-bottom: 20px;
}
.vs-calc-details {
  margin-top: 20px;
  margin-bottom: 20px;
}
.vs-calc-details summary {
  font-size: 14px;
  font-weight: 600;
  color: var(--vs-blue-dark);
  cursor: pointer;
  padding: 8px 0;
}
.vs-calc-matrix {
  margin-top: 12px;
  overflow-x: auto;
}
.vs-calc-matrix table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
.vs-calc-matrix th,
.vs-calc-matrix td {
  padding: 8px;
  text-align: center;
  border: 1px solid var(--vs-border);
}
.vs-calc-matrix th {
  background: var(--vs-soft);
  font-weight: 700;
}
.vs-calc-matrix td {
  font-family: 'JetBrains Mono', monospace;
}
.vs-calc-actions {
  display: flex;
  gap: 12px;
  margin-top: 20px;
}
.vs-calc-actions .btn {
  flex: 1;
}
.vs-calc-error {
  background: rgba(239, 68, 68, 0.1);
  border: 2px solid #ef4444;
  color: #dc2626;
  padding: 16px;
  border-radius: 8px;
  font-weight: 600;
}
@media (max-width: 600px) {
  .vs-calc {
    padding: 24px;
  }
  .vs-calc-row {
    grid-template-columns: 1fr 1fr;
  }
  .vs-calc-grid {
    grid-template-columns: 1fr 1fr;
  }
}
.site-logo-pic {
  height: 56px;
  width: auto;
}
/* Логотип */
.site-logo-pic { height: 56px; width: auto; }

/* Бургер */
.nav-burger { display:none; background:none; border:none; font-size:24px; color:var(--vs-text); cursor:pointer; }
@media (max-width: 968px) {
  .nav-burger { display:block; }
  .site-nav { display:none; position:absolute; top:100%; left:0; right:0; background:var(--vs-card); border-bottom:1px solid var(--vs-border); flex-direction:column; gap:0; padding:8px 24px 16px; }
  .site-nav.open { display:flex; }
  .site-nav a { padding:12px 0; border-bottom:1px solid var(--vs-soft); }
  .site-nav .nav-cta { margin-top:12px; border-bottom:none; justify-content:center; }
}

/* Proof-полоска */
.proof-card { display:flex; align-items:center; gap:20px; background:var(--vs-card); border:1px dashed var(--vs-border); border-radius:var(--vs-radius); padding:20px 24px; }
.proof-icon { font-size:26px; }
.proof-text { flex:1; font-size:14px; color:var(--vs-muted); }
.proof-text strong { color:var(--vs-text); }
.proof-links { display:flex; gap:10px; }
.proof-links .btn { padding:10px 16px; font-size:13px; }
@media (max-width:768px){ .proof-card { flex-direction:column; text-align:center; } }

/* Словарь */
.glossary-letters { display:flex; flex-wrap:wrap; gap:8px; margin:28px 0 8px; }
.glossary-letters a { width:34px; height:34px; display:flex; align-items:center; justify-content:center; border:1px solid var(--vs-border); border-radius:8px; font-weight:700; color:var(--vs-green-dark); }
.glossary-letters a:hover { background:var(--vs-soft); }
.glossary-letter { font-size:26px; margin:32px 0 16px; padding-bottom:8px; border-bottom:2px solid var(--vs-soft); }
.glossary-grid { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.glossary-card { background:var(--vs-card); border:1px solid var(--vs-border); border-radius:var(--vs-radius); padding:20px; }
.glossary-card h3 { font-size:18px; margin-bottom:8px; color:var(--vs-green-dark); }
.glossary-body { font-size:14px; line-height:1.6; }
.glossary-body p { margin-bottom:8px; }
@media (max-width:768px){ .glossary-grid { grid-template-columns:1fr; } }
/* =====================================================
   МОБИЛЬНАЯ ШЛИФОВКА
===================================================== */
html, body { overflow-x: hidden; }
img, svg, canvas { max-width: 100%; height: auto; }

@media (max-width: 968px) {
  .container, .container.narrow { padding-left: 16px; padding-right: 16px; }

  /* Шапка */
  .site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
  .site-logo { font-size: 18px; }
  .site-logo-pic { height: 40px; }
  .nav-burger { display: block; }
  .site-nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--vs-card); border-bottom: 1px solid var(--vs-border); flex-direction: column; gap: 0; padding: 8px 24px 16px; z-index: 50; }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 12px 0; border-bottom: 1px solid var(--vs-soft); }
  .site-nav .nav-cta { margin-top: 12px; border-bottom: none; justify-content: center; }

  /* Типографика */
  h1 { font-size: clamp(28px, 9vw, 40px); line-height: 1.15; }
  h2 { font-size: clamp(22px, 6vw, 30px); }
  .post-content h2 { font-size: 22px; }

  /* Главная */
  .hero-grid { grid-template-columns: 1fr; }
  .hero-card { width: 100%; }
  .tools-grid { grid-template-columns: 1fr; }
  .tool-card.featured { grid-row: auto; }
  .why-grid { grid-template-columns: 1fr; }
  .textbook-tabs { overflow-x: auto; flex-wrap: nowrap; -webkit-overflow-scrolling: touch; }
  .posts-grid { grid-template-columns: 1fr; }
  .newsletter-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .hero .btn, .btn-lg { width: 100%; }

  /* Калькулятор */
  .vs-calc { padding: 20px; }
  .vs-calc-grid { grid-template-columns: 1fr 1fr; }
  .vs-calc-actions { flex-direction: column; }

  /* Полоска доказательности и словарь */
  .proof-card { flex-direction: column; text-align: center; }
  .glossary-grid { grid-template-columns: 1fr; }
}
.dna-btn {
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  padding: 12px 24px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
  transition: all 0.2s;
  display: inline-block;
}

.dna-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(16, 185, 129, 0.4);
  color: white;
  text-decoration: none;
}
.vs-breadcrumbs {
    font-size: 13px;
    color: var(--text-muted, #666);
    padding: 12px 0;
    margin-bottom: 16px;
    font-family: inherit;
}
.vs-breadcrumbs a {
    color: var(--accent-purple, #8b5cf6);
    text-decoration: none;
    border-bottom: 1px dashed transparent;
    transition: border-color 0.2s;
}
.vs-breadcrumbs a:hover { border-bottom-color: var(--accent-purple, #8b5cf6); }
.vs-crumb-sep { color: var(--text-muted, #666); margin: 0 6px; }
.vs-crumb-current { color: var(--text-primary, #333); font-weight: 600; }
/* ===== Бегущая лента статей ===== */
.posts-marquee {
  overflow: hidden;
  padding: 8px 0 16px;
}
.posts-track {
  display: flex;
  width: max-content;
  animation-name: vs-marquee;
  animation-timing-function: linear;
  animation-iteration-count: infinite;
  will-change: transform;
}
.posts-marquee:hover .posts-track {
  animation-play-state: paused;
}
@keyframes vs-marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}
.posts-track .post-card {
  flex: 0 0 260px;
  width: 260px;
  margin-right: 16px;
  margin-bottom: 0;
}
@media (max-width: 700px) {
  .posts-track .post-card { flex: 0 0 220px; width: 220px; }
}
/* ============================================================
   СПЕЦИФИКАЦИЯ СТРАНИЦ ИНСТРУМЕНТОВ (единый вид)
   Светлая витрина → белое интро → тёмный кабинет 1200px
   ============================================================ */
/* ============================================================
   СПЕЦИФИКАЦИЯ СТРАНИЦ ИНСТРУМЕНТОВ (единый вид)
   Светлая витрина → белое интро → тёмный кабинет 1200px
   Покрывает: Радар, Коридоры, Угловые, xG, 1-й тайм, EV-консенсус
   ============================================================ */
.radar-wrapper, .corr, .corner-calc, .xg-calc, .first-half-calc, .bm-wrapper, .dna-analyzer {
  background: transparent !important;
  min-height: 0 !important;
  padding: 40px 0 60px !important;
  color: #1F2D26;
}
.radar-wrapper .wrap, .radar-app, .corr .wrap, .corner-calc .wrap,
.xg-calc .wrap, .first-half-calc .wrap, .bm-wrapper .container, .dna-analyzer .wrap {
  max-width: 1200px !important;
  margin: 0 auto;
}
/* Интро-блоки (белые карточки сверху) */
.radar-wrapper .info-block, .corr .info-block, .corner-calc .info-block,
.xg-calc .info-block, .first-half-calc .info-block,
.bm-wrapper .info-block, .dna-analyzer .info-block {
  background: #FFFFFF !important;
  border: 1px solid #D9E2D9 !important;
  box-shadow: 0 1px 3px rgba(31,58,46,.06);
  border-radius: 12px;
  padding: 24px;
  margin-bottom: 24px;
}
.radar-wrapper .info-block h1, .corr .info-block h1, .corner-calc .info-block .calc-h,
.xg-calc .info-block h1, .first-half-calc .info-block h1,
.bm-wrapper .info-block h1, .dna-analyzer .info-block h1 { color: #1F3A2E !important; font-family: 'PT Serif', Georgia, serif; }
.radar-wrapper .info-block .sub, .corr .info-block .sub, .corner-calc .info-block .sub,
.xg-calc .info-block .sub, .first-half-calc .info-block .sub,
.bm-wrapper .info-block .sub, .dna-analyzer .info-block .sub { color: #5C6B62 !important; }
.radar-wrapper .info-block p, .radar-wrapper .info-block ul,
.corr .info-block p, .corner-calc .info-block p,
.xg-calc .info-block p, .first-half-calc .info-block p,
.bm-wrapper .info-block p, .dna-analyzer .info-block p { color: #5C6B62 !important; }
.radar-wrapper .info-block strong, .corr .info-block strong, .corner-calc .info-block strong,
.xg-calc .info-block strong, .first-half-calc .info-block strong,
.bm-wrapper .info-block strong, .dna-analyzer .info-block strong { color: #1F2D26 !important; }
.radar-wrapper .info-block a, .corr .info-block a, .corner-calc .info-block a,
.xg-calc .info-block a, .first-half-calc .info-block a,
.bm-wrapper .info-block a, .dna-analyzer .info-block a { color: #2D5A3D !important; }
/* Тёмный кабинет (рамка + скругление) */
.radar-app { border: 1px solid #34463B; border-radius: 14px; background: #141D18; }
.xg-calc .card { border-radius: 14px; }
/* Для EV-консенсуса: верхний заголовок не должен быть тёмным */
.bm-wrapper h1, .bm-wrapper h2, .bm-wrapper h3 { font-family: 'PT Serif', Georgia, serif; }
.bm-wrapper .subtitle { color: #7C9483; }