/* 읽기 유창성 랜딩 — teacher-dna-test 레이아웃 구조 참고 */
:root {
  --primary: #2a7ade;
  --primary-dark: #1e5fb1;
  --accent: #4caf50;
  --sky: #0ea5e9;
  --ink: #263238;
  --muted: #64748b;
  --line: #e8eef6;
  --page-max: 57.6rem;
}

*, *::before, *::after { box-sizing: border-box; }

.reading-body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Noto Sans KR', 'Nunito', system-ui, sans-serif;
  color: var(--ink);
  background: linear-gradient(135deg, #e9f4ff 0%, rgba(233, 244, 255, 0) 45%),
              linear-gradient(225deg, #e6fff5 0%, rgba(230, 255, 245, 0) 40%),
              #f7fbff;
  -webkit-font-smoothing: antialiased;
}

.reading-max-w-page {
  max-width: var(--page-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1rem;
  padding-right: 1rem;
}

/* exitbasic 배너 */
.reading-banner-wrap { padding-top: 0.75rem; padding-bottom: 0.25rem; }
.reading-banner-wrap--bottom { margin-top: 0.75rem; margin-bottom: 0.75rem; }

.exitbasic-banner {
  display: block;
  text-decoration: none;
  background: linear-gradient(100deg, #1e1b4b 0%, #312e81 40%, #4c1d95 100%);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(79, 46, 220, 0.25);
  border: 1.5px solid rgba(167, 139, 250, 0.3);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}
.exitbasic-banner:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 26px rgba(79, 46, 220, 0.38);
}
.exitbasic-banner-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 11px 18px;
}
.exitbasic-banner-left { display: flex; align-items: center; gap: 12px; }
.exitbasic-banner-icon { font-size: 1.7rem; flex-shrink: 0; }
.exitbasic-banner-title {
  font-size: 1rem;
  font-weight: 900;
  color: #e9d5ff;
  letter-spacing: 0.04em;
  line-height: 1.2;
}
.exitbasic-banner-sub {
  font-size: 11px;
  color: #c4b5fd;
  margin-top: 2px;
  font-weight: 500;
}
.exitbasic-banner-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.exitbasic-tag {
  background: rgba(255, 255, 255, 0.1);
  color: #ddd6fe;
  border: 1px solid rgba(167, 139, 250, 0.3);
  border-radius: 20px;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 700;
}
.exitbasic-tag-cta {
  background: linear-gradient(90deg, #a78bfa, #818cf8);
  color: #fff;
  font-weight: 900;
  font-size: 12px;
  padding: 6px 16px;
  border-radius: 20px;
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(129, 140, 248, 0.5);
}

/* 헤더 */
.reading-header {
  border-bottom: 1px solid rgba(42, 122, 222, 0.12);
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 40;
}
.reading-header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  flex-wrap: wrap;
}
.reading-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s;
}
.reading-brand:hover { color: var(--primary-dark); }
.reading-brand-icon { font-size: 1.35rem; }
.reading-brand-text { font-size: 1.05rem; }

.reading-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.875rem;
}
.reading-nav-pill {
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: background 0.2s, color 0.2s;
}
.reading-nav-pill--primary {
  background: #e0f2fe;
  color: #0369a1;
}
.reading-nav-pill--primary:hover { background: #bae6fd; }
.reading-nav-pill--student {
  background: #dcfce7;
  color: #15803d;
}
.reading-nav-pill--student:hover { background: #bbf7d0; }
.reading-nav-pill--teacher {
  background: #fffbeb;
  color: #92400e;
}
.reading-nav-pill--teacher:hover { background: #fef3c7; }

/* 메인 */
.reading-main {
  padding-top: 2rem;
  padding-bottom: 4rem;
}

.landing-hero {
  text-align: center;
  padding: 1rem 0 2rem;
}
.landing-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}
.landing-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.landing-badge--sky { border-color: #bae6fd; color: #0369a1; }
.landing-badge--green { border-color: #bbf7d0; color: #15803d; }

.landing-hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 5vw, 2.35rem);
  font-weight: 800;
  line-height: 1.25;
  color: #0f172a;
}
.landing-hero .landing-lead {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--sky);
  margin: 0 0 0.75rem;
}
.landing-hero .landing-desc {
  max-width: 32rem;
  margin: 0 auto 1.5rem;
  color: var(--muted);
  line-height: 1.75;
  font-size: 1rem;
}

.landing-cta-row {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0.75rem;
  max-width: 28rem;
  margin: 0 auto 2rem;
}
@media (min-width: 640px) {
  .landing-cta-row {
    flex-direction: row;
    max-width: 36rem;
    justify-content: center;
  }
}
.landing-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 1.75rem;
  border-radius: 1rem;
  font-size: 1.05rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.landing-btn:hover { transform: translateY(-1px); }
.landing-btn--primary {
  background: linear-gradient(90deg, var(--primary), #6fb1ff);
  color: #fff;
  box-shadow: 0 6px 20px rgba(42, 122, 222, 0.35);
}
.landing-btn--primary:hover {
  background: linear-gradient(90deg, var(--primary-dark), var(--primary));
}
.landing-btn--outline {
  background: #fff;
  color: var(--primary-dark);
  border: 2px solid #bcdcff;
}
.landing-btn--outline:hover { background: #f0f7ff; }
.landing-btn--teacher {
  background: #fff;
  color: #92400e;
  border: 2px solid #fde68a;
}
.landing-btn--teacher:hover { background: #fffbeb; }

.landing-grid {
  display: grid;
  gap: 1rem;
  max-width: 48rem;
  margin: 0 auto 2.5rem;
}
@media (min-width: 640px) {
  .landing-grid { grid-template-columns: repeat(3, 1fr); }
}
.landing-card {
  text-align: center;
  padding: 1.25rem 1rem;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--line);
  border-radius: 1rem;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.06);
}
.landing-card-icon { font-size: 1.75rem; margin-bottom: 0.5rem; }
.landing-card h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
  font-weight: 800;
  color: #0f172a;
}
.landing-card p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

.landing-steps {
  max-width: 40rem;
  margin: 0 auto;
  padding: 1.5rem;
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--line);
  border-radius: 1rem;
}
.landing-steps h2 {
  margin: 0 0 1rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: #0f172a;
  text-align: center;
}
.landing-steps ol {
  margin: 0;
  padding-left: 1.25rem;
  line-height: 1.85;
  color: #334155;
}
.landing-steps li { margin-bottom: 0.35rem; }
.landing-steps strong { color: var(--primary-dark); }

/* 광고 */
.reading-ad-wrap {
  margin-top: 1rem;
  padding-top: 0.75rem;
  padding-bottom: 0.5rem;
  border-top: 1px solid rgba(42, 122, 222, 0.1);
  text-align: center;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.5), transparent);
}
.reading-ad-label {
  font-size: 10px;
  color: #94a3b8;
  letter-spacing: 0.08em;
  margin: 0 0 0.5rem;
}
.reading-ad-slot {
  max-width: 42rem;
  margin: 0 auto;
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  min-height: 100px;
}

/* 푸터 */
.reading-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
  padding: 0 1rem 2rem;
  line-height: 1.7;
  max-width: 36rem;
  margin-left: auto;
  margin-right: auto;
}
.reading-footer-links {
  margin-top: 0.35rem;
}
.reading-footer-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}
.reading-footer-links a:hover { text-decoration: underline; }