/* ==========================================================================
   BLOOMBERG x FINANCIAL TIMES x VNEXPRESS PREMIUM LONGFORM STYLESHEET
   Theme: Tài sản trí tuệ - Chìa khóa nâng tầm giá trị Hợp tác xã (HTX Hiệp Cường)
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Be+Vietnam+Pro:ital,wght@0,400;0,500;0,600;0,700;0,800;0,900;1,400;1,600&family=Inter:wght@400;500;600;700;800&display=swap');

:root {
  /* Color Palette */
  --primary-green: #2E7D32;
  --primary-green-dark: #1B5E20;
  --primary-green-light: #E8F5E9;
  --primary-green-glow: rgba(46, 125, 50, 0.35);

  --tech-blue: #1E88E5;
  --tech-blue-dark: #1565C0;
  --tech-blue-light: #E3F2FD;
  --tech-blue-glow: rgba(30, 136, 229, 0.35);

  --ocop-gold: #F9A825;
  --ocop-gold-dark: #F57F17;
  --ocop-gold-light: #FFFDE7;
  --ocop-gold-glow: rgba(249, 168, 37, 0.35);

  --bg-dark: #0A1410;
  --bg-dark-card: #12241C;
  --bg-white: #FFFFFF;
  --bg-gold-tint: #FEFCF5;
  --bg-blue-tint: #F4F8FD;

  --text-primary: #1A202C;
  --text-secondary: #03070e;
  --text-muted: #64748B;
  --text-light: #F8FAFC;

  /* Typography */
  --font-heading: 'Be Vietnam Pro', sans-serif;
  --font-body: 'Inter', 'Be Vietnam Pro', sans-serif;

  --font-size-base: 20px;
  --line-height-base: 1.8;

  /* Layout */
  --container-narrow: 840px;
  --container-medium: 1100px;
  --container-wide: 1320px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 18px;
  background-color: var(--bg-white);
  color: var(--text-primary);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-primary);
  overflow-x: hidden;
}

/* Scroll Progress Bar */
.scroll-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(0, 0, 0, 0.05);
  z-index: 1000;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary-green), var(--tech-blue), var(--ocop-gold));
  transition: width 0.1s ease-out;
  box-shadow: 0 0 10px var(--tech-blue-glow);
}

/* Typography Hierarchy */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 1.2rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  letter-spacing: -0.01em;
  margin-top: 2rem;
}

h3 {
  font-size: clamp(1.4rem, 2.2vw, 2rem);
  font-weight: 700;
}

p {
  margin-bottom: 1.8rem;
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

strong {
  color: var(--text-primary);
  font-weight: 700;
}

/* Common Section Layout */
.longform-section {
  padding: 100px 24px;
  position: relative;
}

.container-narrow {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.container-medium {
  max-width: var(--container-medium);
  margin: 0 auto;
}

.container-wide {
  max-width: var(--container-wide);
  margin: 0 auto;
}

/* Decorative Section Header */
.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 30px;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 1rem;
}

.badge-green {
  background: var(--primary-green-light);
  color: var(--primary-green-dark);
  border: 1px solid rgba(46, 125, 50, 0.2);
}

.badge-gold {
  background: var(--ocop-gold-light);
  color: var(--ocop-gold-dark);
  border: 1px solid rgba(249, 168, 37, 0.3);
}

.badge-blue {
  background: var(--tech-blue-light);
  color: var(--tech-blue-dark);
  border: 1px solid rgba(30, 136, 229, 0.2);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  min-height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-light);
  background-color: var(--bg-dark);
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.45) contrast(1.1);
  transform: scale(1.05);
  transition: transform 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg,
      rgba(10, 20, 16, 0.7) 0%,
      rgba(10, 20, 16, 0.4) 50%,
      rgba(10, 20, 16, 0.95) 100%);
  z-index: 1;
}

/* Tech Floating Overlay Graphics */
.hero-tech-elements {
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  overflow: hidden;
}

.tech-node {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: rgba(18, 36, 28, 0.65);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #E2E8F0;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  animation: float 6s ease-in-out infinite alternate;
}

.tech-node svg {
  width: 20px;
  height: 20px;
}

.node-1 {
  top: 15%;
  left: 8%;
  animation-delay: 0s;
  border-color: rgba(46, 125, 50, 0.4);
}

.node-2 {
  top: 22%;
  right: 10%;
  animation-delay: 1.5s;
  border-color: rgba(30, 136, 229, 0.4);
}

.node-3 {
  bottom: 25%;
  left: 10%;
  animation-delay: 3s;
  border-color: rgba(249, 168, 37, 0.4);
}

.node-4 {
  bottom: 20%;
  right: 12%;
  animation-delay: 4.5s;
  border-color: rgba(46, 125, 50, 0.4);
}

@keyframes float {
  0% {
    transform: translateY(0px) rotate(0deg);
  }

  100% {
    transform: translateY(-15px) rotate(1deg);
  }
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 960px;
  text-align: center;
  margin: 0 auto;
}

.hero-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: 0.25em;
  color: var(--ocop-gold);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  padding: 6px 20px;
  background: rgba(249, 168, 37, 0.12);
  border: 1px solid rgba(249, 168, 37, 0.3);
  border-radius: 50px;
}

.hero-title {
  color: #FFFFFF;
  font-size: clamp(2.4rem, 5.2vw, 4.8rem);
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 2rem;
}

.hero-title .highlight-gold {
  color: var(--ocop-gold);
  background: linear-gradient(135deg, #FFD54F, #F9A825);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-title .highlight-green {
  color: #81C784;
  background: linear-gradient(135deg, #A5D6A7, #4CAF50);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  line-height: 1.7;
  color: #E2E8F0;
  max-width: 820px;
  margin: 0 auto 2.5rem;
  font-weight: 400;
}

.hero-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 0.95rem;
  color: #94A3B8;
  margin-bottom: 3rem;
}

.hero-author {
  font-weight: 700;
  color: #F8FAFC;
}

.hero-divider {
  width: 4px;
  height: 4px;
  background: #64748B;
  border-radius: 50%;
}

/* Scroll Down Indicator */
.scroll-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 0.3s;
}

.scroll-indicator:hover {
  color: #FFFFFF;
}

.mouse-icon {
  width: 26px;
  height: 42px;
  border: 2px solid rgba(255, 255, 255, 0.6);
  border-radius: 15px;
  position: relative;
  display: flex;
  justify-content: center;
}

.mouse-wheel {
  width: 4px;
  height: 8px;
  background: var(--ocop-gold);
  border-radius: 2px;
  position: absolute;
  top: 8px;
  animation: scrollWheel 2s infinite;
}

@keyframes scrollWheel {
  0% {
    transform: translateY(0);
    opacity: 1;
  }

  100% {
    transform: translateY(14px);
    opacity: 0;
  }
}

/* ==========================================================================
   INTRO SECTION (MỞ ĐẦU)
   ========================================================================== */
.intro-section {
  background: #FFFFFF;
  padding: 100px 24px;
  border-bottom: 1px solid #E2E8F0;
}

.intro-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: center;
}

@media (max-width: 992px) {
  .intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.intro-lead p {
  font-size: 1.25rem;
  line-height: 1.85;
  color: #2D3748;
}

/* Dropcap Styling */
.dropcap {
  float: left;
  font-family: var(--font-heading);
  font-size: 4.8rem;
  line-height: 0.8;
  font-weight: 900;
  margin-right: 16px;
  margin-bottom: 4px;
  color: var(--primary-green);
  background: linear-gradient(135deg, var(--primary-green), var(--tech-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Innovation Ecosystem Card (Right side) */
.ecosystem-card {
  background: linear-gradient(145deg, #F8FAFC, #EDF2F7);
  border: 1px solid #E2E8F0;
  border-radius: 24px;
  padding: 36px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.04);
  position: relative;
  overflow: hidden;
}

.ecosystem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary-green), var(--tech-blue), var(--ocop-gold));
}

.ecosystem-title {
  font-size: 1.2rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.ecosystem-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 20px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 16px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.ecosystem-item:hover {
  transform: translateX(8px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
  border-color: var(--primary-green);
}

.item-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.icon-bulb {
  background: #FEF3C7;
  color: #D97706;
}

.icon-shield {
  background: #DCFCE7;
  color: #15803D;
}

.icon-qr {
  background: #E0F2FE;
  color: #0369A1;
}

.icon-chain {
  background: #F3E8FF;
  color: #7E22CE;
}

.icon-star {
  background: #FEF08A;
  color: #A16207;
}

.item-text strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 2px;
}

.item-text span {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* ==========================================================================
   IMAGE COMPONENTS & MEDIA STYLES
   ========================================================================== */
.article-image-block {
  margin: 60px 0;
  position: relative;
}

.article-image {
  width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
  display: block;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.article-image-block:hover .article-image {
  transform: scale(1.015);
}

.image-caption {
  margin-top: 14px;
  font-size: 0.95rem;
  color: var(--text-muted);
  text-align: center;
  font-style: italic;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.caption-dot {
  width: 6px;
  height: 6px;
  background: var(--primary-green);
  border-radius: 50%;
  display: inline-block;
}

/* Full Width Featured Image */
.featured-image-wide {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  margin-top: 70px;
  margin-bottom: 70px;
}

.featured-image-wide img {
  width: 100%;
  max-height: 70vh;
  object-fit: cover;
}

.featured-image-wide .caption-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 30px;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0) 100%);
  color: #FFFFFF;
  text-align: center;
  font-size: 1.05rem;
}

/* Pullquote Styling */
.editorial-quote {
  margin: 50px 0;
  padding: 30px 40px;
  border-left: 4px solid var(--primary-green);
  background: linear-gradient(90deg, var(--primary-green-light), transparent);
  border-radius: 0 16px 16px 0;
}

.editorial-quote p {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--primary-green-dark);
  margin-bottom: 0;
}

/* ==========================================================================
   INFOGRAPHIC 1: HÀNH TRÌNH TẠO GIÁ TRỊ (Flow Timeline)
   ========================================================================== */
.infographic-wrapper {
  margin: 60px 0;
  padding: 40px 30px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 24px;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.04);
}

.infographic-header {
  text-align: center;
  margin-bottom: 36px;
}

.infographic-tag {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--primary-green);
  margin-bottom: 6px;
  display: block;
}

.infographic-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.timeline-flow {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 12px;
  position: relative;
  padding-top: 20px;
}

@media (max-width: 1100px) {
  .timeline-flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }
}

@media (max-width: 640px) {
  .timeline-flow {
    grid-template-columns: repeat(2, 1fr);
  }
}

.timeline-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 2;
}

.step-icon-wrap {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: var(--primary-green-light);
  border: 2px solid var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 12px;
  box-shadow: 0 6px 16px rgba(46, 125, 50, 0.15);
  transition: transform 0.3s, background-color 0.3s;
}

.timeline-step:hover .step-icon-wrap {
  transform: translateY(-6px) scale(1.08);
  background: var(--primary-green);
  color: #FFFFFF;
}

.step-number {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.step-label {
  font-size: 0.95rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

/* Connection Line between timeline steps */
.timeline-flow::before {
  content: '';
  position: absolute;
  top: 52px;
  left: 5%;
  right: 5%;
  height: 3px;
  background: linear-gradient(90deg, #C8E6C9, var(--primary-green), var(--tech-blue), var(--ocop-gold));
  z-index: 1;
}

@media (max-width: 1100px) {
  .timeline-flow::before {
    display: none;
  }
}

/* ==========================================================================
   INFOGRAPHIC 2: CÔNG NGHỆ TẠO KHÁC BIỆT (Before / After Comparison Matrix)
   ========================================================================== */
.comparison-matrix {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 50px 0;
}

@media (max-width: 768px) {
  .comparison-matrix {
    grid-template-columns: 1fr;
  }
}

.comp-column {
  border-radius: 20px;
  padding: 30px;
  transition: transform 0.3s;
}

.comp-before {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
}

.comp-after {
  background: linear-gradient(145deg, #F0FDF4, #DCFCE7);
  border: 2px solid var(--primary-green);
  box-shadow: 0 12px 32px rgba(46, 125, 50, 0.08);
}

.comp-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.comp-title {
  font-size: 1.3rem;
  font-weight: 800;
}

.before-badge {
  color: #64748B;
  background: #E2E8F0;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
}

.after-badge {
  color: var(--primary-green-dark);
  background: #BBF7D0;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 800;
}

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

.comp-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: #FFFFFF;
  border-radius: 12px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.comp-label {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 600;
}

.comp-val {
  font-weight: 700;
  font-size: 1.05rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.val-bad {
  color: #DC2626;
}

.val-good {
  color: var(--primary-green-dark);
  font-weight: 800;
}

/* ==========================================================================
   SECTION 2: PHẦN 2 STYLES (Soft Warm Gold Tint)
   ========================================================================== */
.section-part2 {
  background-color: var(--bg-gold-tint);
  border-top: 1px solid #FEF08A;
  border-bottom: 1px solid #FEF08A;
}

/* INFOGRAPHIC 3: CHUỖI GIÁ TRỊ (Circular Infographic Hub) */
.circular-hub-container {
  margin: 60px 0;
  padding: 50px 20px;
  background: #FFFFFF;
  border: 1px solid #FEF08A;
  border-radius: 28px;
  box-shadow: 0 16px 40px rgba(249, 168, 37, 0.08);
  position: relative;
  overflow: hidden;
}

.circular-hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  align-items: center;
  position: relative;
}

@media (max-width: 900px) {
  .circular-hub-grid {
    grid-template-columns: 1fr;
  }
}

.hub-center-card {
  grid-column: span 1;
  background: linear-gradient(135deg, #FFF9C4, #FFF59D);
  border: 2px solid var(--ocop-gold);
  border-radius: 24px;
  padding: 30px 20px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(249, 168, 37, 0.2);
}

.hub-center-logo {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 900;
  color: var(--ocop-gold-dark);
  margin-bottom: 8px;
}

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

.hub-node {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  background: #FAF8F0;
  border: 1px solid #FDE68A;
  border-radius: 16px;
  transition: transform 0.3s, background-color 0.3s;
}

.hub-node:hover {
  transform: scale(1.03);
  background: #FEF3C7;
}

.node-icon-box {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: #FEF08A;
  color: #854D0E;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* INFOGRAPHIC 4: NHỮNG CON SỐ NỔI BẬT (Stats Dashboard) */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin: 50px 0;
}

@media (max-width: 900px) {
  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 580px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

.stat-card {
  background: #FFFFFF;
  border: 1px solid #FEF08A;
  border-radius: 20px;
  padding: 24px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.03);
  position: relative;
  overflow: hidden;
  transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(249, 168, 37, 0.15);
  border-color: var(--ocop-gold);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 3.5vw, 3.2rem);
  font-weight: 900;
  line-height: 1;
  color: var(--ocop-gold-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.stat-unit {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.stat-subtext {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ==========================================================================
   SECTION 3: PHẦN 3 STYLES (Tech Blue Tint)
   ========================================================================== */
.section-part3 {
  background-color: var(--bg-blue-tint);
  border-top: 1px solid #BFDBFE;
  border-bottom: 1px solid #BFDBFE;
}

/* INFOGRAPHIC 5: BA TRỦ CỘT PHÁT TRIỂN (3D Triangle / Pyramid) */
.triangle-container {
  margin: 60px 0;
  padding: 50px 30px;
  background: #FFFFFF;
  border: 1px solid #BFDBFE;
  border-radius: 28px;
  box-shadow: 0 16px 40px rgba(30, 136, 229, 0.08);
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 30px;
}

@media (max-width: 850px) {
  .pillars-grid {
    grid-template-columns: 1fr;
  }
}

.pillar-card {
  background: linear-gradient(180deg, #EFF6FF, #FFFFFF);
  border: 2px solid #93C5FD;
  border-radius: 20px;
  padding: 28px 24px;
  text-align: center;
  position: relative;
  transition: transform 0.3s, border-color 0.3s;
}

.pillar-card:hover {
  transform: translateY(-8px);
  border-color: var(--tech-blue);
  box-shadow: 0 12px 30px rgba(30, 136, 229, 0.15);
}

.pillar-icon {
  width: 60px;
  height: 60px;
  border-radius: 18px;
  background: var(--tech-blue);
  color: #FFFFFF;
  font-size: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  box-shadow: 0 8px 20px rgba(30, 136, 229, 0.3);
}

.pillar-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--tech-blue-dark);
  margin-bottom: 10px;
}

.pillar-tags {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px;
  margin-top: 14px;
}

.pillar-tag {
  background: #DBEAFE;
  color: #1E40AF;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
}

/* INFOGRAPHIC 6: TÀI SẢN TRÍ TUỆ HTX (Honeycomb Hex Grid) */
.honeycomb-section {
  margin: 60px 0;
}

.honeycomb-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 30px;
}

@media (max-width: 900px) {
  .honeycomb-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 600px) {
  .honeycomb-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.hex-item {
  background: #FFFFFF;
  border: 1px solid #BFDBFE;
  border-radius: 18px;
  padding: 20px 14px;
  text-align: center;
  transition: transform 0.3s, background-color 0.3s, border-color 0.3s;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.hex-item:hover {
  transform: scale(1.06);
  background: #EFF6FF;
  border-color: var(--tech-blue);
  box-shadow: 0 8px 24px rgba(30, 136, 229, 0.15);
}

.hex-icon {
  font-size: 1.8rem;
  margin-bottom: 8px;
}

.hex-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.3;
}

/* ==========================================================================
   CLOSING SECTION (KẾT)
   ========================================================================== */
.closing-section {
  background-color: var(--bg-dark);
  color: var(--text-light);
  padding: 140px 24px;
  position: relative;
  text-align: center;
  overflow: hidden;
}

.closing-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.35);
}

.closing-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(10, 20, 16, 0.4) 0%, rgba(10, 20, 16, 0.95) 100%);
}

.closing-content {
  position: relative;
  z-index: 2;
  max-width: 940px;
  margin: 0 auto;
}

.quote-mark {
  font-family: var(--font-heading);
  font-size: 5rem;
  line-height: 1;
  color: var(--ocop-gold);
  margin-bottom: -20px;
  display: block;
  opacity: 0.8;
}

.closing-quote {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.6vw, 2.2rem);
  font-weight: 800;
  line-height: 1.5;
  color: #FFFFFF;
  margin-bottom: 30px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
}

.closing-icons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
}

.closing-icon-badge {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--ocop-gold);
}

/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.footer-section {
  background-color: #060D0A;
  color: #94A3B8;
  padding: 60px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.95rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-author-info strong {
  color: #FFFFFF;
  font-size: 1.05rem;
}

.social-share-btns {
  display: flex;
  gap: 12px;
}

.share-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 30px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #FFFFFF;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
}

.share-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.back-to-top-btn {
  background: var(--primary-green);
  border: none;
  color: #FFFFFF;
  padding: 12px 24px;
  border-radius: 30px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background-color 0.3s, transform 0.2s;
}

.back-to-top-btn:hover {
  background: var(--primary-green-dark);
  transform: translateY(-3px);
}

/* ==========================================================================
   ANIMATION & SCROLL REVEAL CLASSES
   ========================================================================== */
.fade-up {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-up.active {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 {
  transition-delay: 0.15s;
}

.delay-2 {
  transition-delay: 0.3s;
}

.delay-3 {
  transition-delay: 0.45s;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  :root {
    --font-size-base: 18px;
  }

  .longform-section {
    padding: 60px 16px;
  }

  .editorial-quote {
    padding: 20px 24px;
  }
}