/* ==========================================================================
   DESIGN SYSTEM - E-MAGAZINE DATA JOURNALISM
   "HTX - Hạt nhân liên kết, tạo sinh kế bền vững"
   ========================================================================== */

@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&display=swap');

:root {
  /* Color Palette - Forest & Earth Editorial */
  --color-primary: #12372A;
  --color-primary-light: #1B4D3E;
  --color-primary-dark: #092017;
  --color-accent: #2D6A4F;
  --color-accent-gold: #D4A373;
  --color-accent-amber: #E76F51;
  --color-accent-blue: #2A9D8F;
  
  --color-bg-page: #FAF9F6;
  --color-bg-surface: #FFFFFF;
  --color-bg-card: #F4F7F4;
  --color-bg-dark: #0D1F18;
  
  --color-text-main: #1C2826;
  --color-text-muted: #4A5568;
  --color-text-light: #F7FAFC;
  
  --color-border: #E2E8F0;
  --color-border-subtle: #CBD5E1;
  
  /* Typography Tokens - Strictly >= 18px across the whole page */
  --font-serif: 'Lora', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --text-xs: 18px;       /* Absolute minimum per user constraint */
  --text-sm: 19px;
  --text-base: 20px;     /* Standard body size */
  --text-md: 22px;
  --text-lg: 26px;
  --text-xl: 32px;
  --text-2xl: 40px;
  --text-3xl: 52px;
  --text-hero: clamp(38px, 5.5vw, 68px);
  
  --line-height-body: 1.85;
  --line-height-heading: 1.25;
  
  /* Layout & Spacing */
  --container-max: 1240px;
  --article-width: 840px;
  --infographic-width: 1160px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(18, 55, 42, 0.08);
  --shadow-lg: 0 16px 40px rgba(18, 55, 42, 0.12);
  
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 18px; /* Base 18px strictly ensures no text drops below 18px */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--color-bg-page);
  color: var(--color-text-main);
  font-family: var(--font-serif);
  font-size: var(--text-base);
  line-height: var(--line-height-body);
  overflow-x: hidden;
}

/* Selection */
::selection {
  background: var(--color-accent);
  color: #ffffff;
}

/* Reading Progress Bar */
#reading-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: rgba(0, 0, 0, 0.06);
  z-index: 1000;
}

#reading-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-gold) 100%);
  transition: width 0.1s ease-out;
}

/* Top Subtle Reading Indicator */
.editorial-topbar {
  position: fixed;
  top: 5px;
  left: 0;
  right: 0;
  z-index: 900;
  padding: 12px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(250, 249, 246, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  transform: translateY(-100%);
  transition: transform 0.4s ease;
}

.editorial-topbar.visible {
  transform: translateY(0);
}

.topbar-brand {
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-primary);
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 10px;
}

.topbar-brand .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-accent);
  display: inline-block;
}

.topbar-progress-text {
  color: var(--color-text-muted);
  font-size: var(--text-xs);
  font-weight: 500;
}

/* ==========================================================================
   HERO COVER / HEADER SECTION
   ========================================================================== */
.hero-cover {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: flex-end;
  padding: 80px 24px;
  background-color: var(--color-bg-dark);
  color: #ffffff;
  overflow: hidden;
}

.hero-background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 110%;
  background-image: url('assets/hero.jpg');
  background-size: cover;
  background-position: center 30%;
  transform: translateY(0);
  will-change: transform;
  z-index: 1;
  filter: brightness(0.85);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    180deg,
    rgba(13, 31, 24, 0.4) 0%,
    rgba(13, 31, 24, 0.72) 55%,
    rgba(9, 32, 23, 0.98) 100%
  );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 40px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #F8F9FA;
  margin-bottom: 24px;
}

.hero-title {
  font-family: var(--font-sans);
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: var(--line-height-heading);
  letter-spacing: -0.02em;
  color: #FFFFFF;
  margin-bottom: 24px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  max-width: 1080px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 28px;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.88);
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-meta-item svg {
  stroke: var(--color-accent-gold);
}

/* ==========================================================================
   ARTICLE LAYOUT & TYPOGRAPHY
   ========================================================================== */
.article-main {
  width: 100%;
  padding: 30px 0 60px;
}

.article-container {
  width: 100%;
  max-width: var(--article-width);
  margin: 0 auto;
  padding: 40px 24px 20px;
}

/* WIDE / FULL-SCREEN INFOGRAPHIC CONTAINER */
.wide-container {
  width: 100%;
  max-width: 100%;
  margin: 60px 0;
  padding: 0 clamp(16px, 3.5vw, 64px);
}

/* Sapo / Lead In */
.article-lead-wrapper {
  margin-bottom: 60px;
  border-bottom: 2px solid #E2E8F0;
  padding-bottom: 45px;
}

.article-lead {
  font-size: var(--text-md);
  line-height: 1.85;
  color: var(--color-primary-light);
  font-weight: 500;
  font-style: normal;
  position: relative;
  padding-left: 28px;
  border-left: 5px solid var(--color-accent);
}

.article-lead p {
  margin-bottom: 22px;
}

.article-lead p:last-child {
  margin-bottom: 0;
}

/* Body Paragraphs */
.prose {
  font-size: var(--text-base);
  line-height: var(--line-height-body);
  color: var(--color-text-main);
}

.prose p {
  margin-bottom: 28px;
  text-align: justify;
}

/* Drop Cap on specific opening paragraphs */
.has-dropcap::first-letter {
  float: left;
  font-family: var(--font-sans);
  font-size: 74px;
  line-height: 60px;
  padding-top: 6px;
  padding-right: 14px;
  padding-bottom: 4px;
  color: var(--color-primary);
  font-weight: 800;
}

/* Section Header Divider */
.chapter-break {
  margin: 75px 0 35px;
  position: relative;
}

.chapter-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 2.5px;
  margin-bottom: 12px;
  background: rgba(45, 106, 79, 0.12);
  padding: 6px 16px;
  border-radius: 20px;
}

.chapter-title {
  font-family: var(--font-sans);
  font-size: var(--text-2xl);
  font-weight: 800;
  line-height: 1.3;
  color: var(--color-primary);
  letter-spacing: -0.01em;
  margin-bottom: 24px;
  position: relative;
}

.chapter-title::after {
  content: '';
  display: block;
  width: 65px;
  height: 4px;
  background: var(--color-accent-gold);
  border-radius: 2px;
  margin-top: 14px;
}

/* Pull Quotes */
.pull-quote {
  margin: 48px -20px;
  padding: 36px 36px 36px 32px;
  background: linear-gradient(135deg, #F3F7F4 0%, #FFFFFF 100%);
  border-left: 6px solid var(--color-accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.quote-mark {
  position: absolute;
  top: 15px;
  right: 25px;
  font-size: 80px;
  font-family: var(--font-serif);
  color: rgba(45, 106, 79, 0.12);
  line-height: 1;
  user-select: none;
}

.pull-quote p {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: var(--text-md);
  line-height: 1.75;
  color: var(--color-primary);
  margin-bottom: 14px;
}

.pull-quote cite {
  display: block;
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 700;
  font-size: var(--text-xs);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* Mid-Article Editorial Image */
.editorial-photo-wrapper {
  margin: 50px 0;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.editorial-photo-wrapper img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

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

.editorial-photo-caption {
  padding: 16px 20px;
  background: #FFFFFF;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  line-height: 1.6;
  color: var(--color-text-muted);
  border-top: 1px solid #E2E8F0;
  display: flex;
  align-items: center;
  gap: 10px;
}

.editorial-photo-caption svg {
  flex-shrink: 0;
  stroke: var(--color-accent);
}

/* ==========================================================================
   DATA INFOGRAPHICS - FULLY SVG & INTERACTIVE DATA
   (Rule: 18px minimum font size everywhere)
   ========================================================================== */
.infographic-wrapper {
  margin: 0 auto;
  width: 100%;
  max-width: 1720px;
  background: #FFFFFF;
  border: 1px solid #D8E2DC;
  border-radius: var(--radius-lg);
  box-shadow: 0 16px 44px rgba(18, 55, 42, 0.1);
  overflow: hidden;
  position: relative;
}

.infographic-header {
  padding: 34px clamp(24px, 4vw, 56px);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #FFFFFF;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
}

.infographic-tag {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 800;
  color: var(--color-accent-gold);
  text-transform: uppercase;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.infographic-title {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.3;
}

.infographic-subtitle {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.85);
  margin-top: 6px;
}

.infographic-source-badge {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.15);
  padding: 6px 14px;
  border-radius: 20px;
  backdrop-filter: blur(5px);
  white-space: nowrap;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.infographic-body {
  padding: clamp(28px, 3.5vw, 52px) clamp(24px, 4vw, 56px);
  background: #FAFBF9;
}

/* --- INFOGRAPHIC 1: Chiềng Sơn & Hoàng Sơn --- */
.stats-grid-chieng-son {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  margin-bottom: 36px;
}

.stat-card-journal {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.stat-card-journal:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.stat-card-journal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--color-accent);
}

.stat-card-journal.highlight::before {
  background: var(--color-accent-amber);
}

.stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(45, 106, 79, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.stat-icon svg {
  stroke: var(--color-accent);
}

.stat-number-wrapper {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 8px;
}

.stat-counter {
  font-family: var(--font-sans);
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-unit {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent-amber);
}

.stat-label {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Hoang Son Feature Panel */
.hoang-son-dashboard {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 30px;
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 32px;
  box-shadow: var(--shadow-sm);
}

.hoang-son-title {
  font-family: var(--font-sans);
  font-size: var(--text-lg);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.vietgap-badge {
  font-size: var(--text-xs);
  font-weight: 800;
  background: #E8F5E9;
  color: #2E7D32;
  padding: 4px 12px;
  border-radius: 20px;
  letter-spacing: 1px;
}

.crops-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 18px 0;
}

.crop-tag {
  background: #F1F5F2;
  border: 1px solid #D5DFD8;
  padding: 8px 14px;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-primary-light);
  display: flex;
  align-items: center;
  gap: 6px;
}

.crop-tag svg {
  stroke: var(--color-accent);
}

.hoang-son-income-box {
  background: linear-gradient(135deg, #092017 0%, #164E3F 100%);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
}

.income-range-text {
  font-family: var(--font-sans);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-accent-gold);
  margin: 10px 0;
  line-height: 1.2;
}

.income-sub {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.88);
}

/* --- INFOGRAPHIC 2: Chuỗi Giá Trị & Chế Biến Cường Hoa --- */
.processing-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 32px;
  position: relative;
}

.flow-step-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-sm);
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #FFFFFF;
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
}

.step-title {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.step-desc {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Highlight metrics of project */
.project-spec-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}

.spec-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-left: 5px solid var(--color-accent-blue);
  border-radius: var(--radius-md);
  padding: 24px;
}

.spec-card.gold {
  border-left-color: var(--color-accent-gold);
}

.spec-card.green {
  border-left-color: var(--color-accent);
}

.spec-title {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.spec-number {
  font-family: var(--font-sans);
  font-size: var(--text-2xl);
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 6px;
}

.spec-detail {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Comparison Matrix (Fresh vs Dried) */
.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.compare-box {
  border-radius: var(--radius-md);
  padding: 26px;
}

.compare-box.negative {
  background: #FFF5F5;
  border: 1px solid #FED7D7;
}

.compare-box.positive {
  background: #F0FFF4;
  border: 1px solid #C6F6D5;
}

.compare-title {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.compare-box.negative .compare-title {
  color: #C53030;
}

.compare-box.positive .compare-title {
  color: #22543D;
}

.compare-list {
  list-style: none;
}

.compare-list li {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  line-height: 1.6;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.compare-list li:last-child {
  margin-bottom: 0;
}

.compare-list li svg {
  flex-shrink: 0;
  margin-top: 4px;
}

/* --- INFOGRAPHIC 3: 4 Điểm Nghẽn & 4 Giải Pháp Chiềng Sơn --- */
.matrix-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.matrix-column {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.matrix-col-header {
  padding: 16px 20px;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.matrix-col-header.bottleneck {
  background: #FFEBE9;
  color: #CF222E;
  border: 1px solid #FF8182;
}

.matrix-col-header.solution {
  background: #E6F4EA;
  color: #137333;
  border: 1px solid #81C995;
}

.matrix-item {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

.matrix-item:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

.matrix-item-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.matrix-item-badge {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 20px;
  white-space: nowrap;
}

.matrix-item.bottleneck .matrix-item-badge {
  background: #FFEBEE;
  color: #C62828;
}

.matrix-item.solution .matrix-item-badge {
  background: #E8F5E9;
  color: #2E7D32;
}

.matrix-item-title {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-primary);
}

.matrix-item-content {
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   ARTICLE FOOTER & AUTHOR BIO
   ========================================================================== */
.article-footer {
  margin-top: 80px;
  padding-top: 40px;
  border-top: 2px solid #E2E8F0;
}

.author-block {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
  padding: 24px 30px;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  border: 1px solid #E2E8F0;
  box-shadow: var(--shadow-sm);
}

.author-info {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* ==========================================================================
   ARTICLE FOOTER - SIMPLE AUTHOR
   "Phần tác giả chỉ cần 2 chữ 'An Chi' đơn thuần, in đậm, căng giữa ở cuối bài"
   ========================================================================== */
.author-section-simple {
  margin: 60px 0 100px;
  text-align: center;
  padding-top: 40px;
  border-top: 2px solid #E2E8F0;
}

.author-simple {
  font-family: var(--font-sans);
  font-size: var(--text-xl);
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 1px;
  text-align: center;
  display: block;
}

/* ==========================================================================
   ANIMATIONS & SCROLL-TRIGGER CLASSES
   ========================================================================== */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  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)
   Strictly preserving >= 18px on all viewports!
   ========================================================================== */
@media (max-width: 1200px) {
  .stats-grid-chieng-son {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 1024px) {
  .processing-flow {
    grid-template-columns: 1fr 1fr;
  }
  
  .project-spec-cards {
    grid-template-columns: 1fr;
  }
  
  .hoang-son-dashboard {
    grid-template-columns: 1fr;
  }
  
  .comparison-grid {
    grid-template-columns: 1fr;
  }
  
  .matrix-container {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --text-base: 18.5px;
  }
  
  .hero-cover {
    min-height: 80vh;
    padding: 60px 16px;
  }
  
  .hero-title {
    font-size: 34px;
  }
  
  .article-container, .wide-container {
    padding-left: 16px;
    padding-right: 16px;
  }
  
  .infographic-body {
    padding: 24px 16px;
  }
  
  .infographic-header {
    padding: 24px 20px;
  }
  
  .pull-quote {
    margin: 32px 0;
    padding: 24px 20px;
  }
  
  .processing-flow {
    grid-template-columns: 1fr;
  }
  
  .stats-grid-chieng-son {
    grid-template-columns: 1fr;
  }
  
  .prose p {
    text-align: left;
  }
}