/**
 * 9Reading — Science article styles
 *
 * Tất cả styles được scope dưới .nine-reading-science để tránh xung đột với Flatsome.
 * Cấu trúc đặt tên: .nrs-{component} (nine reading science)
 */

/* ============ FONTS ============ */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&family=Newsreader:ital,opsz,wght@1,6..72,400;1,6..72,500;1,6..72,600&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============ CSS VARS (scoped) ============ */
.nine-reading-science {
  --nrs-bg: #FBFAF6;
  --nrs-bg-2: #F4EFE2;
  --nrs-bg-3: #EFE9D8;
  --nrs-ink: #1A1816;
  --nrs-ink-2: #2D2A26;
  --nrs-mute: #6B6258;
  --nrs-mute-2: #8B8378;
  --nrs-accent: #C8442C;
  --nrs-accent-dark: #A23420;
  --nrs-highlight: #FFE34A;
  --nrs-green: #2F5D3A;
  --nrs-rule: rgba(26, 24, 22, 0.10);
  --nrs-rule-2: rgba(26, 24, 22, 0.18);
}

/* ============ ROOT WRAPPER ============ */
.nine-reading-science {
  font-family: 'Plus Jakarta Sans', sans-serif;
  background: var(--nrs-bg);
  color: var(--nrs-ink);
  font-size: 17px;
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  /* Override Flatsome's default page margins */
  margin: 0;
  padding: 0;
}
.nine-reading-science * { box-sizing: border-box; }
.nine-reading-science ::selection { background: var(--nrs-highlight); color: var(--nrs-ink); }

/* Reset some Flatsome page-level styles that may interfere */
.nine-reading-science p,
.nine-reading-science h1,
.nine-reading-science h2,
.nine-reading-science h3,
.nine-reading-science ol,
.nine-reading-science ul {
  margin: 0;
  padding: 0;
}

/* Container */
.nine-reading-science .nrs-container {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 32px;
}

/* ============ READING PROGRESS BAR ============ */
.nine-reading-science .nrs-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: transparent;
  z-index: 999;
  pointer-events: none;
}
.nine-reading-science .nrs-progress-fill {
  height: 100%;
  width: 0%;
  background: var(--nrs-accent);
  transition: width 0.05s linear;
}

/* ============ HEADER ============ */
.nine-reading-science .nrs-article-header {
  padding: 80px 0 60px;
  border-bottom: 1px solid var(--nrs-rule);
  background: var(--nrs-bg);
}
.nine-reading-science .nrs-kicker {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--nrs-mute);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
}
.nine-reading-science .nrs-kicker::before {
  content: '';
  width: 28px;
  height: 1px;
  background: var(--nrs-accent);
}
.nine-reading-science h1.nrs-article-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 52px;
  font-weight: 700;
  letter-spacing: -0.034em;
  line-height: 1.08;
  color: var(--nrs-ink);
  margin-bottom: 24px;
}
.nine-reading-science h1.nrs-article-title em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--nrs-accent);
  font-size: 1.04em;
}
.nine-reading-science .nrs-subtitle {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-size: 22px;
  line-height: 1.5;
  color: var(--nrs-ink-2);
  margin-bottom: 40px;
  max-width: 640px;
}
.nine-reading-science .nrs-article-meta {
  display: flex;
  gap: 32px;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--nrs-rule);
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--nrs-mute);
  letter-spacing: 0.04em;
}
.nine-reading-science .nrs-article-meta strong {
  color: var(--nrs-ink);
  font-weight: 500;
}
.nine-reading-science .nrs-dot {
  width: 4px;
  height: 4px;
  background: var(--nrs-mute-2);
  border-radius: 50%;
  display: inline-block;
}

/* ============ BODY ============ */
.nine-reading-science .nrs-article-body {
  padding: 60px 0 80px;
}
.nine-reading-science .nrs-lede {
  font-family: 'Newsreader', serif;
  font-size: 24px;
  line-height: 1.55;
  color: var(--nrs-ink);
  font-weight: 400;
  margin-bottom: 56px;
  padding-left: 28px;
  border-left: 3px solid var(--nrs-accent);
}
.nine-reading-science .nrs-lede em {
  font-style: italic;
  color: var(--nrs-accent);
}
.nine-reading-science .nrs-article-body p {
  margin-bottom: 22px;
  color: var(--nrs-ink-2);
  font-size: 17px;
  line-height: 1.75;
}
.nine-reading-science .nrs-article-body p strong {
  color: var(--nrs-ink);
  font-weight: 600;
}
.nine-reading-science .nrs-article-body p em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrs-accent);
  font-weight: 500;
}
.nine-reading-science .nrs-mark {
  background: linear-gradient(180deg, transparent 60%, var(--nrs-highlight) 60%);
  padding: 0 2px;
}
.nine-reading-science .nrs-article-body a {
  color: var(--nrs-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

/* Section markers */
.nine-reading-science .nrs-section-marker {
  margin: 72px 0 28px;
  display: flex;
  align-items: baseline;
  gap: 18px;
}
.nine-reading-science .nrs-section-marker .nrs-num {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--nrs-accent);
  font-size: 56px;
  line-height: 1;
}
.nine-reading-science .nrs-section-marker .nrs-label {
  font-size: 11px;
  font-weight: 700;
  color: var(--nrs-mute);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  flex: 1;
  border-bottom: 1px solid var(--nrs-rule);
  padding-bottom: 10px;
}

.nine-reading-science h2.nrs-section-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.026em;
  line-height: 1.18;
  margin-bottom: 32px;
  color: var(--nrs-ink);
}
.nine-reading-science h2.nrs-section-title em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--nrs-accent);
  font-size: 1.04em;
}
.nine-reading-science h3.nrs-sub-title {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.014em;
  line-height: 1.3;
  margin: 44px 0 18px;
  color: var(--nrs-ink);
}
.nine-reading-science h3.nrs-sub-title em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 500;
  color: var(--nrs-accent);
}

/* Pull quote */
.nine-reading-science .nrs-pull-quote {
  margin: 44px 0;
  padding: 32px 40px;
  background: var(--nrs-bg-2);
  border-radius: 8px;
  border-left: 4px solid var(--nrs-accent);
}
.nine-reading-science .nrs-pull-quote p {
  font-family: 'Newsreader', serif;
  font-size: 22px;
  line-height: 1.5;
  color: var(--nrs-ink);
  font-style: italic;
  margin: 0;
}
.nine-reading-science .nrs-pull-quote p strong {
  color: var(--nrs-accent);
  font-style: italic;
}
.nine-reading-science .nrs-attr {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-style: normal;
  font-size: 13px;
  color: var(--nrs-mute);
  margin-top: 14px;
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* Callout */
.nine-reading-science .nrs-callout {
  margin: 36px 0;
  padding: 26px 32px;
  background: var(--nrs-bg-2);
  border-radius: 6px;
  border-top: 3px solid var(--nrs-ink);
}
.nine-reading-science .nrs-callout-label {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--nrs-accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.nine-reading-science .nrs-callout p {
  margin-bottom: 12px;
  font-size: 15.5px;
}
.nine-reading-science .nrs-callout p:last-child { margin-bottom: 0; }
.nine-reading-science .nrs-callout ul { padding-left: 18px; margin: 0; }
.nine-reading-science .nrs-callout li {
  font-size: 15.5px;
  color: var(--nrs-ink-2);
  line-height: 1.65;
  margin-bottom: 6px;
}

/* Lists */
.nine-reading-science .nrs-article-body ul,
.nine-reading-science .nrs-article-body ol {
  margin: 18px 0 28px;
  padding-left: 0;
}
.nine-reading-science .nrs-article-body ul > li,
.nine-reading-science .nrs-article-body ol > li {
  list-style: none;
  padding-left: 26px;
  position: relative;
  color: var(--nrs-ink-2);
  line-height: 1.7;
  margin-bottom: 12px;
  font-size: 16.5px;
}
.nine-reading-science .nrs-article-body ul > li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  width: 12px;
  height: 1px;
  background: var(--nrs-accent);
}
.nine-reading-science .nrs-article-body ol {
  counter-reset: nrs-olist;
}
.nine-reading-science .nrs-article-body ol > li {
  counter-increment: nrs-olist;
}
.nine-reading-science .nrs-article-body ol > li::before {
  content: counter(nrs-olist);
  position: absolute;
  left: 0;
  top: 0;
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrs-accent);
  font-weight: 500;
  font-size: 18px;
}

/* DIAGRAMS */
.nine-reading-science .nrs-diagram {
  margin: 48px -20px;
  padding: 40px 32px 28px;
  background: var(--nrs-bg-2);
  border-radius: 12px;
  border: 1px solid var(--nrs-rule);
}
.nine-reading-science .nrs-diagram-label {
  font-size: 10.5px;
  font-weight: 700;
  color: var(--nrs-accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.nine-reading-science .nrs-diagram-title {
  font-size: 19px;
  font-weight: 700;
  color: var(--nrs-ink);
  margin-bottom: 24px;
  letter-spacing: -0.012em;
}
.nine-reading-science .nrs-diagram svg {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
}
.nine-reading-science .nrs-diagram-caption {
  font-size: 13.5px;
  color: var(--nrs-mute);
  margin-top: 18px;
  font-style: italic;
  line-height: 1.55;
}

/* NINE-READING SECTION */
.nine-reading-science .nrs-nine-section {
  margin: 80px 0 0;
  padding: 60px 48px;
  background: var(--nrs-ink);
  color: var(--nrs-bg);
  border-radius: 14px;
  position: relative;
  overflow: hidden;
}
.nine-reading-science .nrs-nine-section::before {
  content: '';
  position: absolute;
  bottom: -150px;
  right: -60px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle, rgba(255, 227, 74, 0.08) 0%, transparent 60%);
}
.nine-reading-science .nrs-nine-section .nrs-kicker {
  color: rgba(251, 250, 246, 0.55);
}
.nine-reading-science .nrs-nine-section .nrs-kicker::before {
  background: var(--nrs-highlight);
}
.nine-reading-science .nrs-nine-section h2 {
  color: var(--nrs-bg);
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.022em;
  line-height: 1.18;
  margin-bottom: 22px;
}
.nine-reading-science .nrs-nine-section h2 em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--nrs-highlight);
}
.nine-reading-science .nrs-nine-section p {
  color: rgba(251, 250, 246, 0.78);
  font-size: 16.5px;
  line-height: 1.7;
  margin-bottom: 18px;
  position: relative;
  z-index: 1;
}
.nine-reading-science .nrs-nine-section p strong {
  color: var(--nrs-bg);
}
.nine-reading-science .nrs-principle-grid {
  margin-top: 32px;
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  position: relative;
  z-index: 1;
}
.nine-reading-science .nrs-principle {
  padding: 18px 22px;
  background: rgba(251, 250, 246, 0.04);
  border-left: 2px solid var(--nrs-highlight);
  border-radius: 4px;
}
.nine-reading-science .nrs-theory {
  font-size: 11.5px;
  font-weight: 700;
  color: var(--nrs-highlight);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.nine-reading-science .nrs-impl {
  font-size: 15px;
  color: var(--nrs-bg);
  line-height: 1.5;
}
.nine-reading-science .nrs-impl em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  color: var(--nrs-highlight);
}

/* REFERENCES */
.nine-reading-science .nrs-references {
  margin-top: 80px;
  padding: 48px 0;
  border-top: 1px solid var(--nrs-rule);
}
.nine-reading-science .nrs-references h3 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 14px;
  font-weight: 700;
  color: var(--nrs-accent);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-bottom: 28px;
}
/* Use ol > li to match specificity of .nrs-article-body ol > li,
   then later position in CSS makes references rule win. */
.nine-reading-science .nrs-references ol {
  counter-reset: nrs-ref;
  padding-left: 0;
  margin: 0;
}
.nine-reading-science .nrs-references ol > li {
  list-style: none;
  counter-increment: nrs-ref;
  padding-left: 36px;
  position: relative;
  font-size: 14px;
  line-height: 1.6;
  color: var(--nrs-ink-2);
  margin-bottom: 14px;
}
.nine-reading-science .nrs-references ol > li::before {
  content: counter(nrs-ref);
  position: absolute;
  left: 0;
  top: 0;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  color: var(--nrs-mute);
  font-weight: 500;
  width: 24px;
  text-align: right;
  background: none;
  height: auto;
}
.nine-reading-science .nrs-references ol > li em {
  font-style: italic;
  color: var(--nrs-ink);
}

/* FINAL CTA */
.nine-reading-science .nrs-end-cta {
  margin: 80px 0 0;
  padding: 56px 40px;
  text-align: center;
  background: var(--nrs-bg-2);
  border-radius: 14px;
}
.nine-reading-science .nrs-end-cta h3 {
  font-family: 'Plus Jakarta Sans', sans-serif;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--nrs-ink);
  margin-bottom: 16px;
}
.nine-reading-science .nrs-end-cta h3 em {
  font-family: 'Newsreader', serif;
  font-style: italic;
  font-weight: 400;
  color: var(--nrs-accent);
}
.nine-reading-science .nrs-end-cta p {
  font-size: 16px;
  color: var(--nrs-ink-2);
  max-width: 520px;
  margin: 0 auto 28px;
  line-height: 1.6;
}
.nine-reading-science .nrs-end-cta a.nrs-btn {
  display: inline-block;
  padding: 14px 32px;
  background: var(--nrs-accent);
  color: var(--nrs-bg);
  text-decoration: none;
  font-weight: 600;
  font-size: 15.5px;
  border-radius: 100px;
  letter-spacing: 0.005em;
  transition: background 0.2s;
}
.nine-reading-science .nrs-end-cta a.nrs-btn:hover {
  background: var(--nrs-accent-dark);
  color: var(--nrs-bg);
  text-decoration: none;
}

/* RESPONSIVE */
@media (max-width: 720px) {
  .nine-reading-science .nrs-article-header {
    padding: 56px 0 44px;
  }
  .nine-reading-science h1.nrs-article-title { font-size: 36px; }
  .nine-reading-science .nrs-subtitle { font-size: 18px; }
  .nine-reading-science .nrs-article-meta {
    flex-wrap: wrap;
    gap: 12px 16px;
  }
  .nine-reading-science h2.nrs-section-title { font-size: 28px; }
  .nine-reading-science h3.nrs-sub-title { font-size: 19px; }
  .nine-reading-science .nrs-lede {
    font-size: 19px;
    padding-left: 18px;
  }
  .nine-reading-science .nrs-pull-quote {
    padding: 24px 22px;
  }
  .nine-reading-science .nrs-pull-quote p { font-size: 18px; }
  .nine-reading-science .nrs-nine-section {
    padding: 40px 26px;
  }
  .nine-reading-science .nrs-nine-section h2 { font-size: 24px; }
  .nine-reading-science .nrs-end-cta {
    padding: 40px 26px;
  }
  .nine-reading-science .nrs-end-cta h3 { font-size: 22px; }
  .nine-reading-science .nrs-diagram {
    margin: 36px -16px;
    padding: 28px 20px 20px;
  }
  .nine-reading-science .nrs-section-marker .nrs-num { font-size: 40px; }
}