/* ==========================================================================
   EXECUTIVE PORTFOLIO MICROSITE: FROM ANALYST WORKFLOW TO INVESTMENT INTELLIGENCE
   Design System, CSS Custom Properties, Light & Dark Theme, Layout & Components
   Primary Accent: #F7931A (Institutional Financial Gold / Bitcoin Amber)
   ========================================================================== */

:root {
  /* Common Brand Colors */
  --color-primary: #F7931A;
  --color-primary-hover: #E07E09;
  --color-primary-subtle: rgba(247, 147, 26, 0.12);
  --color-primary-glow: rgba(247, 147, 26, 0.25);
  
  --color-positive: #10B981;
  --color-positive-bg: rgba(16, 185, 129, 0.12);
  --color-negative: #EF4444;
  --color-negative-bg: rgba(239, 68, 68, 0.12);
  --color-warning: #F59E0B;
  --color-info: #3B82F6;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Transitions & Radii */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 400ms cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Light Theme (Default) */
  --bg-body: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #F1F5F9;
  --bg-surface-translucent: rgba(255, 255, 255, 0.85);
  --bg-tag: #E2E8F0;
  
  --border-subtle: rgba(15, 23, 42, 0.08);
  --border-medium: rgba(15, 23, 42, 0.14);
  --border-focus: #F7931A;

  --text-primary: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-inverse: #FFFFFF;

  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 24px rgba(247, 147, 26, 0.20);
}

/* Dark Theme Overrides */
[data-theme="dark"] {
  --bg-body: #0A0E17;
  --bg-surface: #111827;
  --bg-surface-elevated: #1A2234;
  --bg-surface-translucent: rgba(17, 24, 39, 0.85);
  --bg-tag: #1F2937;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-medium: rgba(255, 255, 255, 0.16);
  --border-focus: #F7931A;

  --text-primary: #F9FAFB;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-inverse: #0F172A;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 32px rgba(247, 147, 26, 0.28);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 768px) {
  .container {
    padding: 0 2rem;
  }
}

/* ==========================================================================
   TOP STICKY NAVIGATION BAR
   ========================================================================== */
.top-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--bg-surface-translucent);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 1.5rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), #D97706);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1rem;
  box-shadow: 0 2px 8px var(--color-primary-glow);
  flex-shrink: 0;
}

.brand-details {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
}

.brand-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.brand-role {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-weight: 500;
}

/* Navigation Links */
.header-nav {
  display: none;
}

@media (min-width: 960px) {
  .header-nav {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    background: var(--bg-surface-elevated);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-subtle);
  }

  .nav-link {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: 0.4rem 0.75rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
  }

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

  .nav-link.active {
    background-color: var(--bg-surface);
    color: var(--color-primary);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
  }
}

/* Actions in Header */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  flex-shrink: 0;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 2px solid var(--border-medium);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
}

.sun-icon { display: none; }
.moon-icon { display: block; }
[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }

.btn-platform {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-md);
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border: 1px solid rgba(247, 147, 26, 0.3);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-platform:hover {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.btn-cta {
  display: none;
}

@media (min-width: 640px) and (max-width: 959px) {
  .btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    background: var(--text-primary);
    color: var(--bg-body);
    transition: all var(--transition-fast);
  }

  .btn-cta:hover {
    background: var(--color-primary);
    color: #FFFFFF;
  }
}

@media (min-width: 1360px) {
  .btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    background: var(--text-primary);
    color: var(--bg-body);
    transition: all var(--transition-fast);
  }

  .btn-cta:hover {
    background: var(--color-primary);
    color: #FFFFFF;
  }
}

/* ==========================================================================
   MOBILE NAVIGATION DROPDOWN & TOGGLE
   ========================================================================== */
.mobile-nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 2px solid var(--border-medium);
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.mobile-nav-toggle:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.hamburger-line {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.2s ease;
  transform-origin: center;
}

/* Transform hamburger into X when opened */
.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 960px) {
  .mobile-nav-toggle {
    display: none !important;
  }
}

/* Mobile Navigation Dropdown Container */
.mobile-nav-dropdown {
  display: block;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  width: 100%;
  background: var(--bg-surface-elevated);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.22);
  max-height: 0;
  opacity: 0;
  visibility: hidden;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1),
              opacity 0.25s ease,
              visibility 0.25s ease;
  z-index: 99;
}

.mobile-nav-dropdown.is-open {
  max-height: 85vh;
  opacity: 1;
  visibility: visible;
  overflow-y: auto;
}

.mobile-nav-inner {
  padding: 1.25rem 1rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.mobile-nav-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
}

@media (max-width: 440px) {
  .mobile-nav-grid {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}

.mobile-nav-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.mobile-nav-item:hover {
  color: var(--text-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
  transform: translateY(-1px);
}

.mobile-nav-item.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

.mobile-nav-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-primary);
}

.mobile-nav-label {
  font-weight: 600;
}

.mobile-nav-actions {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
}

@media (min-width: 480px) {
  .mobile-nav-actions {
    flex-direction: row;
  }
}

.mobile-action-btn {
  flex: 1;
  justify-content: center;
  text-align: center;
  padding: 0.65rem 1rem;
}

@media (min-width: 960px) {
  .mobile-nav-dropdown {
    display: none !important;
  }
}

/* ==========================================================================
   PROGRESS SCROLL INDICATOR
   ========================================================================== */
.scroll-progress-container {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: transparent;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--color-primary), #FBBF24);
  transition: width 50ms ease-out;
}

/* ==========================================================================
   SECTION COMMON STYLES & LAYOUT
   ========================================================================== */
section {
  padding: 5rem 0;
  position: relative;
}

@media (min-width: 960px) {
  section {
    padding: 6.5rem 0;
  }
}

.section-header {
  margin-bottom: 2.75rem;
  max-width: 840px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-secondary);
  background: var(--bg-surface-elevated);
  padding: 0.35rem 0.85rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  border: 1px solid var(--border-subtle);
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-lead {
  font-size: clamp(1.0625rem, 1.8vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Cards */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
}

/* ==========================================================================
   01. HERO & 15-SECOND BRIEFING
   ========================================================================== */
#hero {
  padding: 3.5rem 0 4.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.hero-meta {
  margin-bottom: 1rem;
}

.hero-headline {
  font-size: clamp(2.5rem, 5.2vw, 4.25rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  max-width: 980px;
}

.hero-headline span.accent {
  color: var(--color-primary);
  position: relative;
  display: inline-block;
}

.hero-subheadline {
  font-size: clamp(1.125rem, 2vw, 1.35rem);
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: 860px;
  margin-bottom: 1.25rem;
}

.hero-origin {
  font-size: 0.9375rem;
  color: var(--text-muted);
  max-width: 820px;
  line-height: 1.6;
  margin-bottom: 2.5rem;
  padding-left: 1rem;
  border-left: 2px solid var(--border-medium);
}

/* 15-Second Dominant KPI Strip */
.kpi-strip {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 768px) {
  .kpi-strip {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

.kpi-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
}


.kpi-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
}

.kpi-num {
  font-family: var(--font-mono);
  font-size: clamp(1.85rem, 3.2vw, 2.5rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.1;
  margin-bottom: 0.35rem;
  letter-spacing: -0.03em;
}

.kpi-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.kpi-desc {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* 15-Second Executive TL;DR Matrix */
.tldr-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  margin-bottom: 3.5rem;
  box-shadow: var(--shadow-sm);
  position: relative;
}

.tldr-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
}

.tldr-title {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tldr-title::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  display: inline-block;
}

.tldr-pill {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  background: var(--bg-tag);
  color: var(--text-secondary);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
}

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

@media (min-width: 768px) {
  .tldr-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.tldr-col {
  display: flex;
  flex-direction: column;
}

.tldr-col-step {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.tldr-col-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.tldr-col-body {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Hero Composite Visual */
.hero-visual {
  position: relative;
  margin-top: 1rem;
}

.hero-screen-container {
  position: relative;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-screen-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.window-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-medium);
}
.dot.red { background: #EF4444; }
.dot.yellow { background: #F59E0B; }
.dot.green { background: #10B981; }

.hero-main-img {
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: cover;
  object-position: top center;
  cursor: pointer;
  transition: transform var(--transition-normal);
}

.hero-screen-container:hover .hero-main-img {
  transform: scale(1.01);
}

/* Floating overlay panels on desktop */
.floating-overlay {
  display: none;
}

@media (min-width: 960px) {
  .floating-overlay {
    display: flex;
    position: absolute;
    bottom: -24px;
    right: 28px;
    background: var(--bg-surface-translucent);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-lg);
    padding: 1rem 1.25rem;
    box-shadow: var(--shadow-lg);
    gap: 1.25rem;
    align-items: center;
    max-width: 480px;
    z-index: 10;
  }

  .floating-overlay-thumb {
    width: 90px;
    height: 60px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    border: 1px solid var(--border-subtle);
  }

  .floating-overlay-text h4 {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.2rem;
  }

  .floating-overlay-text p {
    font-size: 0.75rem;
    color: var(--text-secondary);
    line-height: 1.4;
  }
}

.inspect-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-subtle);
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(247, 147, 26, 0.3);
  margin-top: 0;
  transition: all var(--transition-fast);
}

.inspect-btn:hover {
  background: var(--color-primary);
  color: #FFFFFF;
}

/* ==========================================================================
   02. THE PROBLEM: ANALYST LEVERAGE
   ========================================================================== */
#problem {
  border-bottom: 1px solid var(--border-subtle);
}

.problem-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 840px) {
  .problem-grid {
    grid-template-columns: 1fr 1fr 1.2fr;
    gap: 1.5rem;
  }
}

.problem-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
}

.problem-card.highlight {
  background: linear-gradient(145deg, var(--bg-surface), var(--color-primary-subtle));
  border-color: rgba(247, 147, 26, 0.4);
  box-shadow: var(--shadow-glow);
}

.problem-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  align-self: flex-start;
}

.problem-badge.past {
  background: var(--color-negative-bg);
  color: var(--color-negative);
}

.problem-badge.reality {
  background: var(--bg-tag);
  color: var(--text-secondary);
}

.problem-badge.solution {
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  border: 1px solid rgba(247, 147, 26, 0.3);
}

.problem-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.problem-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.problem-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.5;
}

.problem-list li::before {
  content: '✕';
  color: var(--color-negative);
  font-weight: 700;
  font-size: 0.8125rem;
}

.problem-quote {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.philosophy-banner {
  margin-top: 2.5rem;
  padding: 1.75rem 2rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  font-size: 1.0625rem;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.philosophy-banner strong {
  font-size: 1.1875rem;
  color: var(--color-primary);
}

/* ==========================================================================
   03. THE EVOLUTION: 2021 -> 2026 TIMELINE
   ========================================================================== */
#evolution {
  border-bottom: 1px solid var(--border-subtle);
}

.timeline-track {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (min-width: 900px) {
  .timeline-track {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

.timeline-node {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.timeline-node:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.timeline-year {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.timeline-node:last-child .timeline-year {
  color: var(--color-primary);
}

.timeline-stage {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.timeline-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.timeline-tag {
  margin-top: 0.75rem;
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.5rem;
  background: var(--bg-tag);
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  align-self: flex-start;
}

/* ==========================================================================
   04. THE PRODUCT: 6 CAPABILITIES (TABBED / ZERO-CLUTTER DECK)
   ========================================================================== */
#platform {
  border-bottom: 1px solid var(--border-subtle);
}

/* Tab Selector Buttons */
.capability-tabs {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  margin-bottom: 2rem;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.capability-tabs::-webkit-scrollbar {
  display: none;
}

.cap-tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.65rem 1.15rem;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.cap-tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.cap-tab-btn.active {
  background: var(--text-primary);
  color: var(--bg-body);
  border-color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Capability Display Panel */
.capability-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .capability-panel {
    grid-template-columns: 1.1fr 1.4fr;
  }
}

.cap-content {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cap-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.cap-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  display: inline-block;
}

.cap-title {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
}

.cap-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.55;
}

.cap-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.cap-points li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.45;
}

.cap-points li::before {
  content: '✓';
  color: var(--color-primary);
  font-weight: 700;
  font-family: var(--font-mono);
}

.cap-footer {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.cap-footer .inspect-btn,
.cap-footer .btn-platform {
  margin: 0;
  height: 36px;
  padding: 0 0.85rem;
  font-size: 0.8125rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-sizing: border-box;
  line-height: 1;
}

.cap-visual {
  background: var(--bg-surface-elevated);
  border-top: 1px solid var(--border-subtle);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 380px;
}

@media (min-width: 900px) {
  .cap-visual {
    border-top: none;
    border-left: 1px solid var(--border-subtle);
  }
}

.cap-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top left;
  cursor: pointer;
  transition: transform var(--transition-normal);
}

.cap-visual:hover .cap-img {
  transform: scale(1.02);
}

.cap-zoom-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-fast);
  cursor: pointer;
}

.cap-visual:hover .cap-zoom-overlay {
  opacity: 1;
}

.cap-zoom-pill {
  background: rgba(17, 24, 39, 0.85);
  color: #FFFFFF;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* ==========================================================================
   05. THE DECISION ENGINE: EXPLICIT JUDGMENT PIPELINE
   ========================================================================== */
#method {
  border-bottom: 1px solid var(--border-subtle);
}

.pipeline-flow {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 2rem;
}

@media (min-width: 860px) {
  .pipeline-flow {
    flex-direction: row;
    align-items: stretch;
  }
}

.pipeline-step {
  flex: 1;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  position: relative;
  text-align: left;
}

.pipeline-step-num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.pipeline-step-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
}

.pipeline-step-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.methodology-note {
  margin-top: 2.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .methodology-note {
    grid-template-columns: 1fr 1fr;
  }
}

.method-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.method-box h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.method-box p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   06. WORKED EXAMPLE: ARBITRUM END TO END
   ========================================================================== */
#arbitrum {
  border-bottom: 1px solid var(--border-subtle);
}

.arbitrum-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-columns: 1fr;
}

@media (min-width: 960px) {
  .arbitrum-container {
    grid-template-columns: 1.15fr 1.35fr;
  }
}

.arbitrum-left {
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
}

.arbitrum-stepper {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin: 1.5rem 0;
}

.arb-step-btn {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  text-align: left;
  transition: all var(--transition-fast);
}

.arb-step-btn:hover {
  border-color: var(--border-medium);
}

.arb-step-btn.active {
  background: var(--bg-surface);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.arb-step-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  background: var(--bg-surface);
  color: var(--text-primary);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.arb-step-btn.active .arb-step-badge {
  background: var(--text-primary);
  color: var(--bg-body);
  border-color: var(--text-primary);
}

.arb-step-info h4 {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.arb-step-info p {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.arbitrum-right {
  background: var(--bg-surface-elevated);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  position: relative;
}

@media (min-width: 960px) {
  .arbitrum-right {
    border-top: none;
    border-left: 1px solid var(--border-subtle);
  }
}

.arbitrum-img-wrap {
  width: 100%;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: transform var(--transition-normal);
}

.arbitrum-img-wrap:hover {
  transform: scale(1.01);
}

/* ==========================================================================
   07. REAL-WORLD TEST: QUANTITATIVE AUDIT LEDGER (PROGRESSIVE DISCLOSURE)
   ========================================================================== */
#results {
  border-bottom: 1px solid var(--border-subtle);
}

.results-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

@media (min-width: 800px) {
  .results-stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
  }
}

.stat-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.35rem 1.25rem;
}

.stat-val {
  font-family: var(--font-mono);
  font-size: clamp(1.75rem, 2.75vw, 2.25rem);
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.15;
  margin-bottom: 0.35rem;
}

.stat-val.positive,
.stat-val-positive {
  color: var(--color-positive);
}

.stat-lbl {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.stat-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Concentration / Risk Realism Card */
.concentration-banner {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin-bottom: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.concentration-banner h4 {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.concentration-banner p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   INTERACTIVE CHART SUITE STYLING
   ========================================================================== */
.chart-suite-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-md);
}

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

.chart-main-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.chart-tab-controls {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.chart-tab-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.chart-tab-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.chart-tab-btn.active {
  background: var(--text-primary);
  color: var(--bg-body);
  border-color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

/* Compact Multi-Dimensional Chart Filter & Drill Controls */
.chart-filter-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem 0.85rem;
  padding: 0.55rem 0.85rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  font-family: var(--font-mono);
}

.chart-filter-groups {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.85rem;
}

.chart-filter-group {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.filter-label {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin-right: 0.15rem;
}

.chart-filter-chip {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.25rem 0.55rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.chart-filter-chip:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.chart-filter-chip.active {
  background: var(--text-primary);
  color: var(--bg-body);
  border-color: var(--text-primary);
  font-weight: 700;
}

@media (max-width: 640px) {
  .chart-filter-toolbar {
    padding: 0.5rem;
    gap: 0.5rem;
  }
  .chart-filter-groups {
    gap: 0.35rem 0.6rem;
  }
  .chart-filter-chip {
    padding: 0.2rem 0.45rem;
    font-size: 0.625rem;
  }
  .filter-label {
    font-size: 0.625rem;
  }
}

/* Active Drilldown Breadcrumb */
.chart-drill-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-primary-subtle);
  border: 1px solid rgba(247, 147, 26, 0.35);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  animation: fadeIn 200ms ease;
}

.drill-crumb-label {
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.drill-token-badge {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--text-primary);
  background: var(--bg-surface);
  padding: 0.1rem 0.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.drill-up-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  background: var(--text-primary);
  color: var(--bg-body);
  border: 1px solid var(--text-primary);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.5rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.drill-up-btn:hover {
  opacity: 0.88;
  transform: translateX(-1px);
}

.chart-drill-hint {
  font-size: 0.6875rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
  opacity: 0.85;
}

/* Sizing Chart Subview Toggle */
.sizing-subview-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.2rem 0.35rem;
  margin-bottom: 0.85rem;
  width: fit-content;
}

.sizing-subview-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--text-muted);
  padding: 0 0.4rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sizing-sub-btn {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.sizing-sub-btn.active {
  background: var(--text-primary);
  color: var(--bg-body);
  font-weight: 700;
}

.chart-stage {
  position: relative;
  width: 100%;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 1rem 0.5rem;
  overflow: hidden;
}

.interactive-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Floating Chart Tooltip */
.chart-tooltip {
  position: absolute;
  pointer-events: none;
  z-index: 50;
  background: var(--bg-surface-translucent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0.85rem 1.1rem;
  box-shadow: var(--shadow-lg);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-primary);
  line-height: 1.45;
  min-width: 200px;
  transform: translate(-50%, -115%);
  transition: opacity 150ms ease-out, transform 150ms ease-out;
}

.chart-tooltip-title {
  font-size: 0.875rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.25rem;
  display: flex;
  justify-content: space-between;
}

.chart-tooltip-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.15rem;
}

.chart-tooltip-label {
  color: var(--text-muted);
}

.chart-tooltip-val {
  font-weight: 600;
  color: var(--text-primary);
}

.chart-caption-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.chart-legend-badge {
  font-family: var(--font-mono);
  background: var(--bg-tag);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
}

/* SVG Chart Elements */
.chart-grid-line {
  stroke: var(--border-subtle);
  stroke-dasharray: 4 4;
}

.chart-axis-line {
  stroke: var(--border-medium);
  stroke-width: 1.5;
}

.chart-axis-text {
  fill: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
}

.chart-bar {
  cursor: pointer;
  transition: opacity var(--transition-fast), filter var(--transition-fast);
}

.chart-bar:hover {
  opacity: 0.88;
  filter: drop-shadow(0 0 6px rgba(247, 147, 26, 0.35));
}

.chart-bubble {
  cursor: pointer;
  stroke: rgba(255, 255, 255, 0.3);
  stroke-width: 1.5;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.chart-bubble:hover {
  filter: brightness(1.25) drop-shadow(0 0 10px var(--color-primary-glow));
}

.chart-label-text {
  fill: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
}

/* ==========================================================================
   CYCLE CHART STYLING: Research decisions through the cycle
   ========================================================================== */
.cycle-chart-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 1.5rem 1.75rem;
  margin-top: 1.5rem;
  margin-bottom: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.cycle-chart-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.cycle-chart-title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.cycle-chart-legend {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.cycle-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.cycle-legend-line {
  display: inline-block;
  width: 20px;
  height: 2px;
}

.cycle-legend-line.dashed {
  border-top: 2px dashed #94A3B8;
  height: 0;
}

.cycle-legend-line.solid {
  background: #0D9488;
  height: 2.5px;
  border-radius: 1px;
}

.cycle-chart-stage {
  position: relative;
  width: 100%;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  padding: 0.75rem 0.5rem;
  overflow: hidden;
}

.cycle-chart-svg {
  width: 100%;
  height: auto;
  display: block;
}

.cycle-caption-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-top: 0.85rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.cycle-caption {
  font-style: italic;
  color: var(--text-secondary);
}

.stat-val strong, .stat-val .highlight-bold {
  font-weight: 800;
}
.flagship-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.flagship-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.flagship-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}

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

@media (min-width: 960px) {
  .flagship-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.flagship-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-fast);
}

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

.flagship-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.flagship-token {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--text-primary);
}

.flagship-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--color-positive);
  background: var(--color-positive-bg);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
}

.flagship-gain {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
}

.flagship-detail {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Progressive Disclosure Trigger */
.ledger-trigger-wrap {
  text-align: center;
  margin: 1.5rem 0;
}

.ledger-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  background: var(--bg-surface);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.ledger-toggle-btn:hover {
  border-color: var(--text-primary);
  transform: translateY(-1px);
}

/* Expandable Full 32-Transaction Audit Ledger Panel */
.ledger-expand-panel {
  display: none;
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 1.75rem;
  margin-top: 1.5rem;
  box-shadow: var(--shadow-md);
  animation: fadeIn 300ms ease-in-out;
}

.ledger-expand-panel.open {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.ledger-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.ledger-search-input {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-medium);
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
  width: 100%;
  max-width: 320px;
  outline: none;
}

.ledger-search-input:focus {
  border-color: var(--color-primary);
}

.ledger-filters {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.ledger-filter-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

.ledger-filter-btn.active {
  background: var(--text-primary);
  color: var(--bg-body);
  border-color: var(--text-primary);
}

/* Transaction Data Table */
.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.transaction-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
  text-align: left;
}

.transaction-table th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  padding: 0.75rem 0.85rem;
  border-bottom: 2px solid var(--border-subtle);
  background: var(--bg-surface-elevated);
  white-space: nowrap;
}

.transaction-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  white-space: nowrap;
}

.transaction-table tr:hover td {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.token-badge {
  font-weight: 700;
  color: var(--text-primary);
}

.val-positive {
  color: var(--color-positive);
  font-weight: 600;
}

.val-negative {
  color: var(--color-negative);
  font-weight: 600;
}

/* ==========================================================================
   08. WHAT I LEARNED: 3 SENIOR LESSONS
   ========================================================================== */
#lessons {
  border-bottom: 1px solid var(--border-subtle);
}

.lessons-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 840px) {
  .lessons-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.lesson-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  transition: all var(--transition-normal);
}

.lesson-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
}

.lesson-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.lesson-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.lesson-body {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ==========================================================================
   09. THE FUTURE: AI RESEARCH PARTNER (TODAY vs NEXT vs PRINCIPLE)
   ========================================================================== */
#future {
  border-bottom: 1px solid var(--border-subtle);
}

.future-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (min-width: 860px) {
  .future-board {
    grid-template-columns: 1fr 1.2fr 1fr;
  }
}

.future-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
}

.future-card.active-exploring {
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.future-state-badge {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  align-self: flex-start;
}

.future-state-badge.built {
  background: var(--color-positive-bg);
  color: var(--color-positive);
}

.future-state-badge.exploring {
  background: var(--bg-tag);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
}

.future-state-badge.principle {
  background: var(--bg-tag);
  color: var(--text-primary);
}

.future-heading {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.future-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.future-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  line-height: 1.5;
}

.future-list li.built-item::before {
  content: '✓';
  color: var(--color-positive);
  font-weight: 700;
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.future-list li.next-item::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1.5px solid var(--color-primary);
  margin-top: 0.45rem;
  flex-shrink: 0;
  box-sizing: border-box;
}

.future-list li.next-item .next-item-body {
  flex: 1;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.future-list li.next-item strong {
  color: var(--text-primary);
  font-weight: 600;
  margin-right: 0.25rem;
}

.principle-box {
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin-top: 1rem;
  border-left: 3px solid var(--color-primary);
}

.principle-box p {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.45;
}

/* ==========================================================================
   10. PRODUCT VISION & CONNECT
   ========================================================================== */
#connect {
  padding-bottom: 6rem;
}

.career-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: 3rem 2rem;
  max-width: 960px;
  margin: 0 auto 3rem auto;
  text-align: center;
  box-shadow: var(--shadow-md);
}

@media (min-width: 768px) {
  .career-card {
    padding: 3.5rem 3.5rem;
  }
}

.career-headline {
  font-size: clamp(1.75rem, 3.2vw, 2.35rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
  line-height: 1.2;
}

.career-body {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.65;
  max-width: 760px;
  margin: 0 auto 2rem auto;
}

.domain-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.domain-chip {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.4rem 0.9rem;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-primary);
}

.career-ctas {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.btn-large-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 700;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  background: var(--color-primary);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow);
  transition: all var(--transition-fast);
}

.btn-large-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.btn-large-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9375rem;
  font-weight: 700;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-medium);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.btn-large-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Social Connections Footer */
.socials-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.social-link-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.social-link-pill:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.site-footer {
  text-align: center;
  padding: 2.5rem 0;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ==========================================================================
   INTERACTIVE NATIVE <dialog> MODALS
   ========================================================================== */
dialog {
  border: none;
  background: transparent;
  padding: 0;
  max-width: 95vw;
  max-height: 92vh;
  margin: auto;
}

dialog::backdrop {
  background-color: rgba(10, 14, 23, 0.82);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  max-height: 90vh;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-subtle);
}

.modal-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-close-btn {
  font-size: 1.25rem;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  color: var(--text-primary);
  border-color: var(--border-medium);
}

.modal-body {
  padding: 1.25rem;
  overflow-y: auto;
}

.modal-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.modal-caption {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: var(--bg-surface-elevated);
  border-radius: var(--radius-md);
}

/* Contact Modal */
.contact-modal-body {
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 520px;
}

.contact-modal-body p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.contact-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.contact-card-btn {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--radius-md);
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
  text-align: left;
}

.contact-card-btn:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-subtle);
}

.contact-card-btn strong {
  display: block;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.contact-card-btn span {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ==========================================================================
   ACCESSIBILITY & UTILITIES
   ========================================================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
}