:root {
  --sedentary-bg: #0d1117;
  --sedentary-surface: #161b22;
  --sedentary-surface-card: #21262d;
  --sedentary-tone: #00f5d4;
  --sedentary-tone-hover: #00bbf9;
  --sedentary-tone-ghost: rgba(0, 245, 212, 0.15);
  --sedentary-ink: #f0f6fc;
  --sedentary-muted: #8b949e;
  --sedentary-line: #30363d;
  --sedentary-gradient: linear-gradient(135deg, #0d1117 0%, #161b22 100%);
  --sedentary-accent-gradient: linear-gradient(135deg, #00f5d4 0%, #00bbf9 100%);
  
  --font-display: 'Montserrat', sans-serif;
  --font-body: 'Roboto', sans-serif;
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-body);
  background-color: var(--sedentary-bg);
  color: var(--sedentary-ink);
  line-height: 1.6;
}

body.office-body-root {
  background-color: var(--sedentary-bg);
  color: var(--sedentary-ink);
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Decorative SVG pattern background */
body.office-body-root::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
}

/* Scroll-driven Progress Bar Header */
.reading-progress-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: var(--sedentary-accent-gradient);
  width: 100%;
  transform-origin: 0 50%;
  z-index: 100;
  animation: scroll-progress linear;
  animation-timeline: scroll();
}

@keyframes scroll-progress {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}

/* Layout Shell */
.office-habits-shell {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
  position: relative;
  z-index: 10;
}

/* Sections Global Styling */
main > section {
  padding-top: 10dvh;
  padding-bottom: 10dvh;
  border-bottom: 1px solid var(--sedentary-line);
  animation: section-fade-in linear both;
  animation-timeline: view();
  animation-range: entry 10% cover 30%;
}

@keyframes section-fade-in {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Header Component */
.habit-header-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: rgba(13, 17, 23, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--sedentary-line);
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.habit-header-bar img[alt="logo"] {
  height: 38px;
  width: auto;
}

.sedentary-top-nav ul {
  list-style: none;
  gap: 1.5rem;
}

.nav-item-link a {
  color: var(--sedentary-ink);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav-item-link a:hover {
  color: var(--sedentary-tone);
}

/* Mobile Hamburger Menu CSS Only */
.hamburger-toggle-label {
  display: none;
  cursor: pointer;
  width: 28px;
  height: 20px;
}

.bar-line {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--sedentary-ink);
  border-radius: 2px;
}

/* Hero Section (Preset G Minimal Typographic) */
.posture-hero-zone {
  min-height: 75vh;
  padding-top: 12dvh;
  padding-bottom: 10dvh;
}

.hero-category-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--sedentary-tone);
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.heading-display-alpha {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  color: var(--sedentary-ink);
}

.sub-heading-beta {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  color: var(--sedentary-muted);
  font-weight: 300;
  max-width: 680px;
  line-height: 1.6;
}

/* Section Title Typography */
.section-label-badge {
  display: block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--sedentary-tone);
  margin-bottom: 0.5rem;
  text-transform: uppercase;
}

.heading-section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--sedentary-ink);
  margin-bottom: 1rem;
}

.body-reading-paragraph {
  color: var(--sedentary-muted);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Action Triggers / Buttons */
.custom-action-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.9rem 2rem;
  border-radius: 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.25s ease;
  cursor: pointer;
  border: 1px solid transparent;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.trigger-accent {
  background: var(--sedentary-accent-gradient);
  color: #0d1117;
  box-shadow: 0 4px 20px rgba(0, 245, 212, 0.25);
}

.trigger-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 245, 212, 0.4);
}

.trigger-ghost {
  background: transparent;
  border-color: var(--sedentary-tone);
  color: var(--sedentary-tone);
}

.trigger-ghost:hover {
  background: var(--sedentary-tone-ghost);
  color: var(--sedentary-ink);
}

.trigger-header {
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
}

/* Content 1 Media Frame */
.hero-media-cover-frame {
  height: 40vh;
  border-radius: 16px;
  border: 1px solid var(--sedentary-line);
}

.narrow-text-holder {
  max-width: 720px;
}

/* Features (Preset G Manifesto Vertical List) */
.spine-manifesto-list {
  display: flex;
  flex-direction: column;
}

.manifesto-item-row {
  border-top: 1px solid var(--sedentary-line);
  position: relative;
  transition: background-color 0.2s ease;
}

.manifesto-item-row:hover {
  background-color: rgba(255, 255, 255, 0.015);
}

.manifesto-num-tag {
  font-family: var(--font-display);
  font-size: 4.5rem;
  font-weight: 900;
  color: var(--sedentary-ink);
  opacity: 0.08;
  line-height: 1;
  width: 120px;
  flex-shrink: 0;
}

.manifesto-item-head {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--sedentary-ink);
}

/* Content 2 (Preset G 3 Cards with Top Accent Border) */
.card-trio-zone {
  background-color: var(--sedentary-bg);
}

.posture-feature-box {
  background-color: var(--sedentary-surface);
  border-radius: 12px;
  padding: 2rem;
  border: 1px solid var(--sedentary-line);
  border-top: 4px solid var(--sedentary-tone);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.posture-feature-box:hover {
  transform: translateY(-4px);
  border-top-color: var(--sedentary-tone-hover);
}

.card-icon-wrap {
  color: var(--sedentary-tone);
}

.card-item-title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--sedentary-ink);
}

/* Testimonials (Preset G Featured + 2 Minor) */
.desk-wellness-quote-zone {
  background-color: var(--sedentary-surface);
}

.featured-quote-card {
  background-color: var(--sedentary-surface-card);
  border-radius: 16px;
  border: 1px solid var(--sedentary-line);
  overflow: hidden;
}

.quote-mark-bg {
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 12rem;
  font-family: Georgia, serif;
  color: var(--sedentary-tone);
  opacity: 0.08;
  line-height: 1;
  pointer-events: none;
}

.featured-quote-text {
  font-size: clamp(1.2rem, 2.5vw, 1.6rem);
  font-weight: 400;
  color: var(--sedentary-ink);
  line-height: 1.5;
}

.author-avatar-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--sedentary-accent-gradient);
}

.minor-quote-card {
  background-color: var(--sedentary-surface-card);
  border-radius: 12px;
  border: 1px solid var(--sedentary-line);
  border-left: 4px solid var(--sedentary-tone);
}

/* FAQ Section (Preset G Numbered Q&A Open) */
.faq-row-item {
  border-bottom: 1px solid var(--sedentary-line);
}

.faq-number {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--sedentary-tone);
  opacity: 0.8;
}

.faq-question-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--sedentary-ink);
}

/* Form Section (Preset G 2 Columns Underline Fields) */
.signup-action-node {
  background-color: var(--sedentary-surface);
}

.webinar-form-wrap {
  background-color: var(--sedentary-surface-card);
  padding: 2.5rem;
  border-radius: 16px;
  border: 1px solid var(--sedentary-line);
}

.form-field-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-field-label {
  font-size: 0.85rem;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--sedentary-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-underline-field {
  background: transparent;
  border: none;
  border-bottom: 2px solid var(--sedentary-line);
  padding: 0.75rem 0;
  color: var(--sedentary-ink);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: border-color 0.2s ease;
  border-radius: 0;
}

.form-underline-field:focus {
  border-bottom-color: var(--sedentary-tone);
}

.trust-list-box {
  color: var(--sedentary-ink);
  font-size: 0.95rem;
}

.contact-details-block {
  color: var(--sedentary-muted);
  border-top: 1px solid var(--sedentary-line);
  padding-top: 1.5rem;
  margin-top: 1.5rem;
}

/* Footer Section */
.sedentary-footer-layer {
  background-color: var(--sedentary-bg);
  border-top: 1px solid var(--sedentary-line);
  padding-top: 3rem;
  padding-bottom: 3rem;
  color: var(--sedentary-muted);
}

.sedentary-footer-layer img[alt="logo"] {
  height: 32px;
  width: auto;
}

.sedentary-footer-layer a {
  color: var(--sedentary-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.sedentary-footer-layer a:hover {
  color: var(--sedentary-tone);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .hamburger-toggle-label {
    display: flex;
  }

  .sedentary-top-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--sedentary-surface);
    border-bottom: 1px solid var(--sedentary-line);
    padding: 1.5rem;
    display: none;
  }

  #mobile-toggle-checkbox:checked ~ .sedentary-top-nav {
    display: block;
  }

  .sedentary-top-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .manifesto-num-tag {
    font-size: 3rem;
    width: 60px;
  }

  .webinar-form-wrap {
    padding: 1.5rem;
  }
}