/* ==========================================================================
   E-MAGAZINE DATA JOURNALISM STYLING
   Phong cách Báo chí Dữ liệu Cao cấp - Longform Immersive Experience
   Tối ưu hóa: Đọc sâu, Tương phản cao, Typography chuẩn xác
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400;1,600&family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Playfair+Display:ital,wght@0,600;0,700;0,800;0,900;1,600;1,700&display=swap');

:root {
  /* Bảng màu Báo chí Dữ liệu Cao cấp (Data Journalism Modern Palette) */
  --bg-primary: #0a0d12;
  --bg-secondary: #121820;
  --bg-card: rgba(18, 24, 32, 0.85);
  --bg-card-hover: rgba(26, 35, 48, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-accent-glow: radial-gradient(circle at 50% 50%, rgba(20, 184, 166, 0.12), transparent 70%);

  /* Màu chữ - Đảm bảo độ tương phản cao */
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-highlight: #ffffff;
  
  /* Điểm nhấn dữ liệu (Accents) */
  --emerald-accent: #10b981;
  --teal-accent: #14b8a6;
  --cyan-accent: #06b6d4;
  --gold-accent: #f59e0b;
  --copper-accent: #fb923c;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(20, 184, 166, 0.35);

  /* Typography Scale */
  --font-serif: 'Lora', Georgia, serif;
  --font-display: 'Playfair Display', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --container-max: 1240px;
  --article-width: 820px;
  --content-padding: clamp(1.25rem, 5vw, 3rem);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Nền tảng */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  color-scheme: dark;
  background-color: var(--bg-primary);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-serif);
  font-size: 1.1875rem; /* ~19px, vượt chuẩn tối thiểu 16px */
  line-height: 1.85;
  color: var(--text-secondary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  position: relative;
}

/* Hiệu ứng nền Ambient Matrix / Grid Tinh tế */
.ambient-background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: 
    radial-gradient(circle at 15% 20%, rgba(20, 184, 166, 0.05), transparent 45%),
    radial-gradient(circle at 85% 75%, rgba(6, 182, 212, 0.04), transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(16, 185, 129, 0.03), transparent 60%);
  background-attachment: fixed;
}

.ambient-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  opacity: 0.15;
  background-size: 60px 60px;
  background-image: 
    linear-gradient(to right, rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 40%, transparent 80%);
}

/* Khung bọc bài viết (Không có header/menu/TOC theo yêu cầu người dùng) */
.emagazine-wrapper {
  position: relative;
  z-index: 1;
  width: 100%;
}

/* ==========================================================================
   HERO / COVER SECTION
   ========================================================================== */
.hero-cover {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 6rem var(--content-padding) 5rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-background-media {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
}

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  filter: brightness(0.42) contrast(1.15) saturate(0.9);
  transform: scale(1.05);
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(10, 13, 18, 0.65) 0%,
    rgba(10, 13, 18, 0.45) 40%,
    rgba(10, 13, 18, 0.85) 85%,
    var(--bg-primary) 100%
  );
}

.hero-content {
  max-width: 1080px;
  width: 100%;
  text-align: center;
  position: relative;
  z-index: 2;
  margin: 0 auto;
}

.hero-category {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--teal-accent);
  margin-bottom: 2rem;
  padding: 0.4rem 1.25rem;
  background: rgba(20, 184, 166, 0.1);
  border: 1px solid rgba(20, 184, 166, 0.28);
  border-radius: 9999px;
  backdrop-filter: blur(8px);
}

.hero-category .live-dot {
  width: 8px;
  height: 8px;
  background-color: var(--teal-accent);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--teal-accent);
  animation: pulse-dot 2s infinite ease-in-out;
}

@keyframes pulse-dot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.4); opacity: 0.6; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 5.8vw, 4.75rem);
  font-weight: 900;
  line-height: 1.18;
  color: var(--text-highlight);
  letter-spacing: -0.025em;
  margin-bottom: 2.25rem;
  text-wrap: balance;
  text-shadow: 0 4px 28px rgba(0, 0, 0, 0.8);
}

.hero-title .quote-mark {
  color: var(--teal-accent);
  font-style: italic;
}

.hero-sapo {
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2.2vw, 1.55rem);
  font-weight: 400;
  line-height: 1.75;
  color: #e2e8f0;
  max-width: 900px;
  margin: 0 auto 3rem;
  text-align: center;
  font-style: normal;
  border-left: none;
  padding: 0;
  text-shadow: 0 2px 14px rgba(0, 0, 0, 0.6);
}

.hero-sapo strong {
  color: #ffffff;
  font-weight: 600;
}

.hero-scroll-cue {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 1rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.75;
  transition: opacity 0.3s ease;
  animation: float-cue 2.5s infinite ease-in-out;
}

.hero-scroll-cue svg {
  width: 24px;
  height: 24px;
  stroke: var(--teal-accent);
}

@keyframes float-cue {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(8px); }
}

/* ==========================================================================
   ARTICLE LAYOUT & SECTIONING
   ========================================================================== */
.article-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 4rem var(--content-padding) 6rem;
}

/* Khối dẫn nhập mở đầu bài báo */
.article-lead-block {
  max-width: var(--article-width);
  margin: 0 auto 5rem;
}

.article-lead-block p.lead-paragraph {
  font-size: clamp(1.25rem, 2vw, 1.45rem);
  line-height: 1.85;
  color: var(--text-primary);
  font-weight: 400;
  position: relative;
}

.article-lead-block p.lead-paragraph::first-letter {
  float: left;
  font-family: var(--font-display);
  font-size: 4.8rem;
  line-height: 0.8;
  padding-top: 6px;
  padding-right: 14px;
  padding-bottom: 2px;
  color: var(--teal-accent);
  font-weight: 700;
}

/* Section styling cho 3 phần */
.article-section {
  position: relative;
  margin-bottom: 6.5rem;
  padding-top: 3.5rem;
  border-top: 1px solid var(--border-subtle);
}

.article-section:first-of-type {
  border-top: none;
  padding-top: 0;
}

/* Section Header */
.section-header-block {
  max-width: var(--article-width);
  margin: 0 auto 2.75rem;
}

.section-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--teal-accent);
  margin-bottom: 0.75rem;
}

.section-heading {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 3rem);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-highlight);
  letter-spacing: -0.015em;
  position: relative;
  padding-bottom: 1.25rem;
}

.section-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 70px;
  height: 3px;
  background: linear-gradient(90deg, var(--teal-accent), var(--cyan-accent));
  border-radius: 2px;
}

/* Đoạn văn thân bài (Body Paragraphs) */
.text-column {
  max-width: var(--article-width);
  margin: 0 auto;
}

.body-paragraph {
  margin-bottom: 1.85rem;
  color: var(--text-secondary);
  font-size: 1.2rem; /* > 16px */
  line-height: 1.88;
}

.body-paragraph:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   HÌNH ẢNH MINH HỌA BÁO CHÍ (EDITORIAL PHOTO ESSAY)
   Đơn giản, không text, ít người
   ========================================================================== */
.editorial-photo-wrapper {
  margin: 3.5rem auto;
  max-width: 1040px;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
  border: 1px solid var(--border-subtle);
  position: relative;
  background: var(--bg-secondary);
}

.editorial-photo {
  width: 100%;
  height: auto;
  max-height: 580px;
  object-fit: cover;
  display: block;
  transition: transform 0.8s ease;
}

.editorial-photo-wrapper:hover .editorial-photo {
  transform: scale(1.02);
}

.editorial-photo-caption {
  padding: 1rem 1.5rem;
  background: rgba(14, 19, 26, 0.9);
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.editorial-photo-caption::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--teal-accent);
  border-radius: 50%;
}

/* ==========================================================================
   DATA JOURNALISM INFOGRAPHICS
   - Cỡ chữ tại infographic tối thiểu 18px
   - Thuần dữ liệu, SVG, icon, biểu đồ và con số; ít chữ
   - Chỉ minh họa, không thay thế nội dung
   ========================================================================== */
.data-infographic-card {
  max-width: 1040px;
  margin: 4.5rem auto;
  background: linear-gradient(145deg, rgba(18, 24, 32, 0.95), rgba(12, 16, 22, 0.98));
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 18px;
  padding: clamp(2rem, 4vw, 3.25rem);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.data-infographic-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--teal-accent), var(--cyan-accent), var(--emerald-accent));
}

.infographic-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 2.75rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.infographic-tag {
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--teal-accent);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.infographic-tag svg {
  width: 22px;
  height: 22px;
  stroke: var(--teal-accent);
}

.infographic-title {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 700;
  color: var(--text-highlight);
  margin-top: 0.4rem;
  line-height: 1.3;
}

.infographic-source-badge {
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  font-weight: 600;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.05);
  padding: 0.45rem 1rem;
  border-radius: 8px;
  border: 1px solid var(--border-subtle);
}

/* --------------------------------------------------------------------------
   INFOGRAPHIC 1: BƯỚC NGOẶT ĐỔI MỚI (Khởi đầu & Đột phá Chuồng Lạnh)
   -------------------------------------------------------------------------- */
.grid-infographic-1 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.data-stat-box {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 1.85rem 1.6rem;
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.data-stat-box:hover {
  background: rgba(255, 255, 255, 0.045);
  border-color: var(--border-highlight);
  transform: translateY(-4px);
}

.stat-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: rgba(20, 184, 166, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--teal-accent);
}

.stat-icon-wrap svg {
  width: 28px;
  height: 28px;
}

.stat-number-hero {
  font-family: var(--font-sans);
  font-size: clamp(2.5rem, 4.2vw, 3.4rem);
  font-weight: 800;
  color: var(--text-highlight);
  line-height: 1;
  letter-spacing: -0.02em;
  margin-bottom: 0.6rem;
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
}

.stat-unit {
  font-size: 1.25rem; /* >= 18px */
  font-weight: 600;
  color: var(--teal-accent);
}

.stat-label-text {
  font-family: var(--font-sans);
  font-size: 1.15rem; /* ~18.4px */
  font-weight: 700;
  color: #f1f5f9;
  line-height: 1.4;
  margin-bottom: 0.5rem;
}

.stat-sub-text {
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  color: var(--text-muted);
  line-height: 1.5;
}

/* Comparison Bar Component (Chuồng truyền thống vs Chuồng lạnh khép kín) */
.comparison-container {
  margin-top: 2rem;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 1.75rem;
}

.comparison-title {
  font-family: var(--font-sans);
  font-size: 1.2rem; /* >= 18px */
  font-weight: 700;
  color: var(--text-highlight);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

.comparison-item {
  padding: 1.25rem;
  border-radius: 10px;
}

.comparison-item.negative {
  background: rgba(239, 68, 68, 0.07);
  border-left: 4px solid #ef4444;
}

.comparison-item.positive {
  background: rgba(20, 184, 166, 0.09);
  border-left: 4px solid var(--teal-accent);
}

.comparison-name {
  font-family: var(--font-sans);
  font-size: 1.15rem; /* >= 18px */
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.comparison-item.negative .comparison-name {
  color: #fca5a5;
}

.comparison-item.positive .comparison-name {
  color: #5eead4;
}

.comparison-points {
  list-style: none;
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  line-height: 1.6;
  color: var(--text-secondary);
}

.comparison-points li {
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* --------------------------------------------------------------------------
   INFOGRAPHIC 2: TRIẾT LÝ BÓ ĐŨA & ĐÒN BẨY HỢP TÁC (Phần 2)
   -------------------------------------------------------------------------- */
.boda-data-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 2.5rem;
  align-items: center;
  margin-bottom: 2.75rem;
}

/* Biểu đồ đòn bẩy vốn Bó đũa 5 tỷ -> 50 tỷ */
.capital-leverage-box {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 2rem;
}

.capital-leverage-title {
  font-family: var(--font-sans);
  font-size: 1.25rem; /* 20px */
  font-weight: 700;
  color: var(--text-highlight);
  margin-bottom: 1.75rem;
}

.capital-bars-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.capital-bar-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.capital-bar-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  font-weight: 600;
  color: var(--text-secondary);
}

.capital-bar-label span:last-child {
  font-weight: 700;
  color: var(--text-highlight);
}

.bar-track {
  width: 100%;
  height: 28px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
}

.bar-fill {
  height: 100%;
  border-radius: 8px;
  transition: width 1.6s cubic-bezier(0.16, 1, 0.3, 1);
  width: 0%; /* Triggered via JS */
  position: relative;
}

.bar-fill.single {
  background: linear-gradient(90deg, #64748b, #94a3b8);
}

.bar-fill.collective {
  background: linear-gradient(90deg, var(--teal-accent), var(--emerald-accent));
  box-shadow: 0 0 20px rgba(20, 184, 166, 0.4);
}

/* Đồ thị SVG Đàn gà & Thành viên */
.htx-composition-box {
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.htx-pie-svg-container {
  width: 180px;
  height: 180px;
  position: relative;
  margin-bottom: 1.5rem;
}

.htx-pie-svg-container svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.htx-pie-svg-container .donut-center-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.donut-number {
  font-family: var(--font-sans);
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-highlight);
  line-height: 1;
}

.donut-label {
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  font-weight: 600;
  color: var(--text-muted);
}

.htx-legend-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
}

.legend-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.45rem 0.75rem;
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.02);
}

.legend-color-dot {
  width: 14px;
  height: 14px;
  border-radius: 4px;
  display: inline-block;
  margin-right: 0.6rem;
}

.legend-color-dot.direct {
  background: var(--teal-accent);
}

.legend-color-dot.affiliated {
  background: var(--cyan-accent);
}

/* Hàng chỉ số tự động hóa: 1 nhân công / 20.000 con gà & 20h Tối Thứ Hai */
.operational-metrics-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.metric-pill-card {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.5rem 1.6rem;
  transition: var(--transition-smooth);
}

.metric-pill-card:hover {
  border-color: var(--border-highlight);
  background: rgba(255, 255, 255, 0.05);
}

.metric-icon-circle {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(6, 182, 212, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--cyan-accent);
  flex-shrink: 0;
}

.metric-icon-circle svg {
  width: 28px;
  height: 28px;
}

.metric-content-col {
  display: flex;
  flex-direction: column;
}

.metric-big-figure {
  font-family: var(--font-sans);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-highlight);
  line-height: 1.15;
}

.metric-big-title {
  font-family: var(--font-sans);
  font-size: 1.15rem; /* >= 18px */
  font-weight: 700;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.metric-sub-note {
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   INFOGRAPHIC 3: CHUỖI GIÁ TRỊ KHÉP KÍN & XUẤT KHẨU (Phần 3)
   -------------------------------------------------------------------------- */
.chain-flow-container {
  margin-bottom: 2.75rem;
}

.chain-flow-title {
  font-family: var(--font-sans);
  font-size: 1.25rem; /* 20px */
  font-weight: 700;
  color: var(--text-highlight);
  margin-bottom: 1.75rem;
  text-align: center;
}

.chain-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  position: relative;
}

.chain-step-node {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 14px;
  padding: 1.75rem 1.25rem;
  text-align: center;
  position: relative;
  transition: var(--transition-smooth);
}

.chain-step-node:hover {
  transform: translateY(-4px);
  border-color: var(--border-highlight);
  background: rgba(20, 184, 166, 0.06);
}

.step-number-tag {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(20, 184, 166, 0.15);
  border: 1px solid var(--teal-accent);
  color: var(--teal-accent);
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.1rem;
}

.step-node-icon {
  margin-bottom: 0.85rem;
  color: var(--text-highlight);
}

.step-node-icon svg {
  width: 32px;
  height: 32px;
}

.step-name-heading {
  font-family: var(--font-sans);
  font-size: 1.2rem; /* >= 18px */
  font-weight: 700;
  color: var(--text-highlight);
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.step-desc-text {
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  color: var(--text-muted);
  line-height: 1.45;
}

/* 3 Trụ cột Bền vững (Card Row) */
.pillars-summary-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.pillar-item-box {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 1.6rem 1.4rem;
  text-align: center;
  border-top: 3px solid var(--teal-accent);
}

.pillar-item-box:nth-child(2) {
  border-top-color: var(--cyan-accent);
}

.pillar-item-box:nth-child(3) {
  border-top-color: var(--emerald-accent);
}

.pillar-title {
  font-family: var(--font-sans);
  font-size: 1.2rem; /* >= 18px */
  font-weight: 700;
  color: var(--text-highlight);
  margin-bottom: 0.6rem;
}

.pillar-detail {
  font-family: var(--font-sans);
  font-size: 1.125rem; /* 18px */
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   KẾT THÚC BÀI BÁO & TÁC GIẢ (BYLINE & FOOTER)
   Không menu, không toc, không thanh tiến trình, thuần túy báo chí
   ========================================================================== */
.article-signoff-block {
  max-width: var(--article-width);
  margin: 4.5rem auto 2rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.author-byline {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.byline-avatar-sig {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--teal-accent), var(--cyan-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: 1.25rem;
  color: #042f2e;
}

.byline-text-wrap {
  text-align: right;
}

.byline-role {
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.byline-name {
  font-family: var(--font-serif);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-highlight);
  letter-spacing: 0.02em;
}

/* Chân trang tối giản báo chí */
.magazine-footer {
  text-align: center;
  padding: 4rem 1rem 5rem;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 1rem;
  border-top: 1px solid var(--border-subtle);
  background: #080a0e;
}

.magazine-footer p {
  margin-bottom: 0.5rem;
}

/* ==========================================================================
   ANIMATION & SCROLL TRIGGER STYLES
   ========================================================================== */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal-on-scroll.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   RESPONSIVE DESIGN (DESKTOP, TABLET, MOBILE)
   ========================================================================== */
@media (max-width: 1024px) {
  :root {
    --article-width: 100%;
  }

  .chain-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .boda-data-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 1.125rem; /* 18px mobile */
    line-height: 1.8;
  }

  .hero-cover {
    min-height: 90vh;
    padding: 4.5rem 1.25rem 3.5rem;
  }

  .hero-title {
    font-size: 2.35rem;
  }

  .hero-sapo {
    font-size: 1.2rem;
  }

  .article-container {
    padding: 2.5rem 1.25rem 4rem;
  }

  .article-section {
    margin-bottom: 4.5rem;
    padding-top: 2.5rem;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .pillars-summary-row {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .chain-steps-grid {
    grid-template-columns: 1fr;
  }

  .data-infographic-card {
    padding: 1.5rem 1.2rem;
    margin: 3.5rem 0;
    border-radius: 14px;
  }

  .stat-label-text,
  .stat-sub-text,
  .comparison-points,
  .capital-bar-label,
  .htx-legend-list,
  .metric-big-title,
  .metric-sub-note,
  .step-desc-text,
  .pillar-detail {
    font-size: 1.125rem !important; /* Đảm bảo tối thiểu 18px trên mọi thiết bị */
  }
}