/* Core Variables */
:root {
  --brand-main: #1a365d;
  --brand-accent: #d97706;
  --page-bg: #f8fafc;
  --text-dark: #333333;
  --text-dark-muted: #666666;
  --border: #e0e0e0;
  --radius: 8px;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --font-main: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

/* Reset & Base */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-main);
  background-color: var(--page-bg);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--brand-accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Layout */
.wrapper {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* Header */
.top-navbar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: var(--spacing-sm) 0;
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo { font-weight: bold; font-size: 1.5rem; color: var(--brand-main); display: flex; align-items: center; gap: 0.5rem; }
.logo img { width: 32px; height: 32px; }
.main-nav { display: flex; gap: 1.5rem; }
.main-nav a { color: var(--text-dark); font-weight: 500; }
.main-nav a:hover { color: var(--brand-accent); text-decoration: none; }

/* Mobile Menu Toggle */
.mobile-trigger { display: none; background: none; border: none; font-size: 1.5rem; cursor: pointer; }

/* Placeholder Banner */
.alert-strip {
  background: #ffebee;
  color: #c62828;
  text-align: center;
  padding: 0.5rem;
  font-size: 0.875rem;
  font-weight: bold;
}

/* Typography */
h1 { font-size: 2.5rem; color: var(--brand-main); margin-bottom: 1rem; line-height: 1.2; }
h2 { font-size: 2rem; color: var(--brand-main); margin-bottom: 1rem; margin-top: 2rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.5rem; }
p { margin-bottom: 1.5rem; }

/* Buttons */
.action-btn {
  display: inline-block;
  background: var(--brand-main);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-weight: 500;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}
.action-btn:hover { opacity: 0.9; text-decoration: none; color: #fff; }
.action-btn-secondary { background: var(--brand-accent); }

/* Custom Layouts (Anti-pattern) */
.intro-block {
  padding: var(--spacing-lg) 0;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
.intro-text { max-width: 680px; }

.content-narrow { max-width: 780px; margin: 0 auto; }
.content-medium { max-width: 880px; margin: 0 auto; }

/* Asymmetric Grid */
.split-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin: var(--spacing-lg) 0;
}
@media (min-width: 768px) {
  .split-layout {
    grid-template-columns: 3fr 2fr;
    align-items: center;
  }
  .split-layout.reverse {
    grid-template-columns: 2fr 3fr;
  }
}

/* Service List */
.features-group {
  list-style: none;
  margin: var(--spacing-md) 0;
}
.feature-box {
  background: #fff;
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
}

/* Quote/Highlight */
.focus-panel {
  background: #f0f4f8;
  border-left: 4px solid var(--brand-accent);
  padding: 1.5rem;
  margin: 2rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}

/* Footer */
.page-footer {
  background: var(--brand-main);
  color: #fff;
  padding: var(--spacing-lg) 0 2rem;
  margin-top: var(--spacing-lg);
}
.foot-container {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}
@media (min-width: 768px) {
  .foot-container { grid-template-columns: repeat(3, 1fr); }
}
.foot-widget h4 { color: #fff; margin-bottom: 1rem; }
.foot-widget a { color: #ddd; display: block; margin-bottom: 0.5rem; }
.foot-base {
  text-align: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.875rem;
  color: #bbb;
}

/* Article Cards */
.post-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .post-grid { grid-template-columns: 2fr 1fr; }
  .post-item:nth-child(3) { grid-column: 1 / -1; }
}
.post-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}
.post-info { font-size: 0.875rem; color: var(--text-dark-muted); margin-bottom: 0.5rem; }

/* FAQ */
.qna-block {
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
}
.qna-ask { font-weight: bold; margin-bottom: 0.5rem; }
.qna-ans { color: var(--text-dark-muted); margin-bottom: 0; }

/* Form */
.input-wrap { margin-bottom: 1rem; }
.input-wrap label { display: block; margin-bottom: 0.5rem; font-weight: 500; }
.input-wrap input, .input-wrap textarea {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: inherit;
}

@media (max-width: 767px) {
  .main-nav { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; width: 100%; background: #fff; padding: 1rem; border-bottom: 1px solid var(--border); }
  .main-nav.active { display: flex; }
  .mobile-trigger { display: block; }
  h1 { font-size: 2rem; }
}