/* ==========================================================================
   DR. ABHAY KUMAR SHARMA — EXECUTIVE CONSULTING PORTFOLIO
   Design System & Core Styles
   Aesthetic: Editorial, Executive, Minimal, Research-led, Understated Luxury
   Palette: Warm White + Charcoal + Muted Navy + Soft Graphite
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400..600;1,6..72,400..500&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette - Executive Editorial */
  --color-bg: #FAF9F5;               /* Warm white / off-white canvas */
  --color-bg-alt: #F3F2EC;           /* Subtle tinted warm section background */
  --color-surface: #FFFFFF;          /* Pure card/container surface */
  --color-surface-hover: #FCFCF9;    /* Subtle hover surface */
  --color-text-primary: #121316;     /* Deep charcoal / near black */
  --color-text-secondary: #4A4E57;   /* Muted graphite body */
  --color-text-muted: #737882;       /* Subtle meta / tertiary text */
  --color-border: #E3E1D9;           /* Refined thin divider */
  --color-border-subtle: #ECEAE3;    /* Very light inner border */
  
  /* Primary Executive Accent - Muted Navy */
  --color-accent: #1B365D;           /* Deep classic navy */
  --color-accent-hover: #122744;     /* Darker navy */
  --color-accent-soft: rgba(27, 54, 93, 0.07);
  --color-accent-border: rgba(27, 54, 93, 0.2);

  /* Typography */
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-serif: 'Newsreader', Georgia, 'Times New Roman', serif;
  
  /* Layout & Spacing */
  --max-width: 1320px;
  --container-px: clamp(20px, 4vw, 48px);
  --section-py: clamp(80px, 8vw, 130px);
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.65;
  font-size: 1.0625rem; /* ~17px */
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

ul, ol {
  list-style: none;
}

::selection {
  background: var(--color-accent);
  color: #FFFFFF;
}

/* Accessibility: Focus rings */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* Container & Grid Standards */
.container {
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-px);
  padding-right: var(--container-px);
  width: 100%;
}

.section {
  padding-top: var(--section-py);
  padding-bottom: var(--section-py);
  position: relative;
}

.section-alt {
  background-color: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* Editorial Section Header */
.section-header {
  margin-bottom: clamp(40px, 5vw, 64px);
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 0.75rem; /* 12px */
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 18px;
}

.section-eyebrow::before {
  content: '';
  display: inline-block;
  width: 24px;
  height: 1px;
  background-color: var(--color-accent);
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.8vw, 3.25rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--color-text-primary);
  max-width: 820px;
}

.section-lead {
  font-size: clamp(1.05rem, 1.3vw, 1.25rem);
  color: var(--color-text-secondary);
  line-height: 1.7;
  max-width: 740px;
  margin-top: 16px;
  font-weight: 300;
}

/* Editorial Separator Line */
.editorial-rule {
  width: 100%;
  height: 1px;
  background-color: var(--color-border);
  border: none;
  margin: 0;
}

/* ==========================================================================
   NAVIGATION BAR (Minimal & Sticky)
   ========================================================================== */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(250, 249, 245, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.site-nav.scrolled {
  background-color: rgba(250, 249, 245, 0.98);
  box-shadow: 0 4px 20px rgba(18, 19, 22, 0.04);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.nav-brand {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 0.9375rem; /* 15px */
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-primary);
}

.brand-sub {
  font-size: 0.6875rem; /* 11px */
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  font-weight: 500;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-link {
  font-size: 0.875rem; /* 14px */
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-text-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--color-text-primary);
  color: var(--color-surface);
  font-size: 0.8125rem; /* 13px */
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 10px 20px;
  border-radius: var(--radius-xs);
  transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.nav-cta:hover {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

/* Mobile Toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 12px;
  flex-direction: column;
  gap: 6px;
  z-index: 1100;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* ==========================================================================
   HERO SECTION (Editorial 2-Column Layout)
   ========================================================================== */
.hero {
  padding-top: clamp(40px, 6vw, 90px);
  padding-bottom: clamp(60px, 8vw, 100px);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(32px, 5vw, 72px);
  align-items: center;
}

.hero-eyebrow {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-index {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  font-family: var(--font-sans);
}

.hero-eyebrow-text {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 5.5vw, 5.25rem);
  font-weight: 400;
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--color-text-primary);
  margin-bottom: 28px;
}

.hero-headline em {
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent);
}

.hero-paragraph {
  font-size: clamp(1.0625rem, 1.25vw, 1.25rem);
  line-height: 1.7;
  color: var(--color-text-secondary);
  font-weight: 300;
  max-width: 620px;
  margin-bottom: 38px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--color-text-primary);
  color: #FFFFFF;
  padding: 16px 28px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
  border: 1px solid var(--color-text-primary);
}

.btn-primary:hover {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-1px);
}

.btn-primary .arrow {
  transition: transform var(--transition-fast);
}

.btn-primary:hover .arrow {
  transform: translateX(4px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: transparent;
  color: var(--color-text-primary);
  padding: 16px 26px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--color-text-primary);
  background-color: rgba(18, 19, 22, 0.03);
}

/* Hero Portrait Visual Frame */
.hero-portrait-card {
  position: relative;
}

.portrait-frame {
  position: relative;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 12px;
  box-shadow: 0 12px 36px rgba(18, 19, 22, 0.04);
}

.portrait-img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  filter: contrast(102%) brightness(99%);
}

.portrait-caption {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  padding-top: 14px;
  padding-bottom: 4px;
  border-top: 1px solid var(--color-border-subtle);
  margin-top: 12px;
}

.portrait-name {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-primary);
}

.portrait-degrees {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-accent);
}

/* ==========================================================================
   TRUST / CREDENTIAL STRIP (Section 8)
   ========================================================================== */
.trust-strip {
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-surface);
  padding: 24px 0;
}

.trust-items {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.trust-pill {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-primary);
}

.trust-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
}

.trust-divider {
  width: 1px;
  height: 20px;
  background-color: var(--color-border);
}

/* ==========================================================================
   ABOUT SECTION (Section 9)
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(36px, 6vw, 80px);
}

.about-summary {
  font-size: clamp(1.2rem, 1.8vw, 1.6rem);
  font-family: var(--font-serif);
  line-height: 1.45;
  color: var(--color-text-primary);
  margin-bottom: 28px;
}

.about-text p {
  color: var(--color-text-secondary);
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 22px;
}

.about-meta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.meta-box-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.meta-box-value {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.about-action {
  margin-top: 36px;
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.link-arrow:hover {
  color: var(--color-accent-hover);
  gap: 12px;
}

/* ==========================================================================
   AREAS OF EXPERTISE (Section 10)
   ========================================================================== */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.expertise-grid-2col {
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.table-responsive {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  width: 100%;
}

.expertise-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: clamp(28px, 3.5vw, 40px);
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
  transition: all var(--transition-base);
}

.expertise-card:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(18, 19, 22, 0.04);
}

.card-number {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  margin-bottom: 24px;
}

.card-title {
  font-family: var(--font-serif);
  font-size: 1.55rem;
  font-weight: 500;
  line-height: 1.25;
  color: var(--color-text-primary);
  margin-bottom: 16px;
}

.card-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 24px;
}

.card-tag {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  background-color: var(--color-bg-alt);
  color: var(--color-text-muted);
  padding: 3px 8px;
  border-radius: var(--radius-xs);
}

.card-footer {
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--color-border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ==========================================================================
   SERVICES (Section 11 — Interactive Accordion / Reveal)
   ========================================================================== */
.services-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-border);
}

.service-item {
  border-bottom: 1px solid var(--color-border);
  transition: background-color var(--transition-fast);
}

.service-header {
  padding: 32px 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
}

.service-header-left {
  display: flex;
  align-items: baseline;
  gap: 32px;
}

.service-num {
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--color-accent);
  min-width: 48px;
}

.service-title {
  font-family: var(--font-serif);
  font-size: clamp(1.35rem, 2.2vw, 1.85rem);
  font-weight: 500;
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

.service-item:hover .service-title {
  color: var(--color-accent);
}

.service-toggle-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.service-item.open .service-toggle-icon {
  transform: rotate(45deg);
  background-color: var(--color-text-primary);
  color: #FFFFFF;
  border-color: var(--color-text-primary);
}

.service-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base), padding var(--transition-base);
}

.service-item.open .service-body {
  max-height: 400px;
  padding-bottom: 36px;
}

.service-content-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  padding-left: 80px;
}

.service-desc-text {
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.service-sublist-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 12px;
}

.service-sublist {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 16px;
}

.service-sublist li {
  font-size: 0.875rem;
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.service-sublist li::before {
  content: '—';
  color: var(--color-accent);
  font-size: 0.75rem;
}

/* ==========================================================================
   CONSULTING METHOD (Section 12 — Horizontal 5 Stages)
   ========================================================================== */
.method-flow {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  position: relative;
  margin-top: 40px;
}

.method-flow::before {
  content: '';
  position: absolute;
  top: 24px;
  left: 20px;
  right: 20px;
  height: 1px;
  background-color: var(--color-border);
  z-index: 1;
}

.method-step {
  position: relative;
  z-index: 2;
  background-color: var(--color-bg);
  padding: 0 12px;
}

.section-alt .method-step {
  background-color: var(--color-bg-alt);
}

.method-node {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-xs);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 24px;
  transition: all var(--transition-fast);
}

.method-step:hover .method-node {
  background-color: var(--color-accent);
  color: #FFFFFF;
  border-color: var(--color-accent);
}

.method-name {
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-primary);
  margin-bottom: 10px;
}

.method-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* ==========================================================================
   PROFESSIONAL JOURNEY & EDUCATION (Sections 13 & 14)
   ========================================================================== */
.experience-layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(40px, 6vw, 84px);
}

.timeline {
  display: flex;
  flex-direction: column;
  gap: 36px;
  position: relative;
  padding-left: 28px;
  border-left: 1px solid var(--color-border);
}

.timeline-item {
  position: relative;
}

.timeline-dot {
  position: absolute;
  left: -33px;
  top: 4px;
  width: 9px;
  height: 9px;
  background-color: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--color-bg);
}

.section-alt .timeline-dot {
  box-shadow: 0 0 0 4px var(--color-bg-alt);
}

.timeline-period {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.timeline-role {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.timeline-org {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 12px;
}

.timeline-desc {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
  margin-bottom: 14px;
}

.timeline-bullets {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.timeline-bullets li {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  position: relative;
  padding-left: 14px;
}

.timeline-bullets li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* Education Cards */
.education-stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.edu-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 28px;
  border-radius: var(--radius-xs);
  transition: border-color var(--transition-fast);
}

.edu-card:hover {
  border-color: var(--color-accent-border);
}

.edu-degree-tag {
  font-size: 1.75rem;
  font-family: var(--font-serif);
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 6px;
}

.edu-degree-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.edu-institution {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
}

.edu-note {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  border-top: 1px solid var(--color-border-subtle);
  padding-top: 10px;
  margin-top: 10px;
}

/* ==========================================================================
   CASE STUDIES / SELECTED WORK (Section 16)
   ========================================================================== */
.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.case-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  transition: all var(--transition-base);
}

.case-card:hover {
  border-color: var(--color-accent-border);
  box-shadow: 0 16px 36px rgba(18, 19, 22, 0.05);
  transform: translateY(-2px);
}

.case-card-hero {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
}

.case-card-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.case-card:hover .case-card-hero img {
  transform: scale(1.02);
}

.case-card-body {
  padding: clamp(28px, 3.5vw, 40px);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.case-category {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.case-title {
  font-family: var(--font-serif);
  font-size: 1.65rem;
  font-weight: 500;
  line-height: 1.25;
  color: var(--color-text-primary);
  margin-bottom: 24px;
}

.case-breakdown {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
}

.case-block-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}

.case-block-text {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.case-card-footer {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-subtle);
}

/* ==========================================================================
   RESEARCH & THOUGHT LEADERSHIP (Section 15)
   ========================================================================== */
.research-filter-bar {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 16px;
}

.filter-btn {
  background: none;
  border: none;
  padding: 8px 18px;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--color-text-primary);
}

.filter-btn.active {
  background-color: var(--color-accent);
  color: #FFFFFF;
}

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

.research-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.research-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.research-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.research-card-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-bottom: 14px;
}

.research-card-venue {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  font-weight: 500;
}

.research-card-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* ==========================================================================
   FEATURED INSIGHT & ARTICLES (Sections 17 & 18)
   ========================================================================== */
.featured-insight-card {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  margin-bottom: 48px;
  overflow: hidden;
}

.featured-insight-img {
  width: 100%;
  height: 100%;
  min-height: 380px;
  object-fit: cover;
}

.featured-insight-content {
  padding: clamp(36px, 5vw, 64px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.featured-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.featured-title {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 2.8vw, 2.5rem);
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-text-primary);
  margin-bottom: 18px;
}

.featured-summary {
  font-size: 1.0625rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.articles-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
}

.article-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.article-category {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.article-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.35;
  color: var(--color-text-primary);
  margin-bottom: 14px;
}

.article-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

/* ==========================================================================
   SPEAKING & KNOWLEDGE SHARING (Section 19)
   ========================================================================== */
.speaking-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.speaking-box {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 24px;
  border-radius: var(--radius-xs);
}

.speaking-box-icon {
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.speaking-box-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.speaking-box-desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ==========================================================================
   CONTACT SECTION (Section 21 — High Authority Advisory Consultation)
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: clamp(40px, 6vw, 80px);
}

.contact-info-col {
  display: flex;
  flex-direction: column;
}

.contact-headline {
  font-family: var(--font-serif);
  font-size: clamp(2.2rem, 3.6vw, 3.2rem);
  font-weight: 400;
  line-height: 1.15;
  color: var(--color-text-primary);
  margin-bottom: 20px;
}

.contact-intro {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
  font-weight: 300;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-top: 1px solid var(--color-border);
  padding-top: 32px;
}

.contact-entry {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-entry-label {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.contact-entry-value {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-text-primary);
}

/* Consultation Form Card */
.consultation-form-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: clamp(32px, 4vw, 48px);
  box-shadow: 0 16px 40px rgba(18, 19, 22, 0.04);
}

.form-header {
  margin-bottom: 28px;
}

.form-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.form-sub {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-primary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 14px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xs);
  color: var(--color-text-primary);
  font-size: 0.9375rem;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-accent);
  background-color: #FFFFFF;
  outline: none;
}

.form-textarea {
  min-height: 110px;
  resize: vertical;
}

.form-privacy-note {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.5;
  margin-top: 14px;
}

.form-success-banner {
  display: none;
  background-color: #EBF3EA;
  color: #1A4D2E;
  padding: 16px;
  border-radius: var(--radius-xs);
  margin-bottom: 20px;
  font-size: 0.875rem;
}

/* ==========================================================================
   SITE FOOTER (Section 22)
   ========================================================================= */
.site-footer {
  background-color: #121316;
  color: #FAF9F5;
  padding-top: clamp(60px, 7vw, 100px);
  padding-bottom: 40px;
  border-top: 1px solid #23252A;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: clamp(32px, 5vw, 64px);
  margin-bottom: 60px;
}

.footer-brand-title {
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #FAF9F5;
  margin-bottom: 10px;
}

.footer-brand-tagline {
  font-size: 0.875rem;
  color: #A0A5B0;
  line-height: 1.6;
  max-width: 320px;
  margin-bottom: 20px;
}

.footer-degrees {
  display: inline-block;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  font-weight: 600;
  color: #728DB5;
  text-transform: uppercase;
}

.footer-col-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #FAF9F5;
  margin-bottom: 18px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  font-size: 0.875rem;
  color: #A0A5B0;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: #FFFFFF;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid #23252A;
  font-size: 0.75rem;
  color: #737882;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-legal-links {
  display: flex;
  gap: 24px;
}

.footer-legal-link {
  color: #737882;
  transition: color var(--transition-fast);
}

.footer-legal-link:hover {
  color: #FAF9F5;
}

/* ==========================================================================
   DOWNLOADABLE PROFILE BAR (Section 16 in detail.md)
   ========================================================================== */
.profile-download-bar {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 32px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-top: 48px;
  border-radius: var(--radius-xs);
}

.profile-download-text h4 {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 500;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.profile-download-text p {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.profile-download-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Interactive modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(18, 19, 22, 0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  padding: 20px;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background-color: var(--color-surface);
  max-width: 600px;
  width: 100%;
  padding: 40px;
  border-radius: var(--radius-xs);
  position: relative;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--color-border);
}

.modal-close-btn {
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-muted);
}