/* GENERAL CONFIGURATION & CSS CUSTOM VARIABLES */
:root {
  --lumen-primary: #1A2332;       /* Deep Slate Indigo */
  --lumen-accent: #C5A059;        /* Premium Warm Gold Accent */
  --lumen-accent-hover: #AA7C11;  /* Rich Gold Hover */
  --lumen-bg: #FAF8F5;            /* Off-white Premium Paper Cream Background */
  --lumen-text: #2B2D42;          /* Clean Dark Charcoal text for readability */
  --lumen-text-light: #5C5E70;    /* Muted Slate text */
  --lumen-card-bg: #FFFFFF;       /* Pure white panels */
  --lumen-border: #E5E1D8;        /* Soft hairline separator */
  --lumen-font-serif: 'Playfair Display', 'Noto Serif JP', serif;
  --lumen-font-sans: 'Noto Sans JP', sans-serif;
  --lumen-container-w: 1200px;
  --lumen-measure: 72ch;          /* Ideal line measure for Magazine Longread Layout */
  --lumen-shadow: 0 4px 20px rgba(0,0,0,0.04);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--lumen-primary);
}

body {
  font-family: var(--lumen-font-sans);
  color: var(--lumen-text);
  background-color: var(--lumen-bg);
  line-height: 1.85;
  letter-spacing: 0.05em;
  -webkit-font-smoothing: antialiased;
}

/* READING PROGRESS BAR */
.lumen-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 4px;
  background-color: var(--lumen-accent);
  z-index: 1000;
  transition: width 0.1s ease;
}

/* CONTAINER */
.lumen-container {
  width: 100%;
  max-width: var(--lumen-container-w);
  margin: 0 auto;
  padding: 0 2rem;
}

/* GRID LAYOUTS */
.lumen-grid-8 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.lumen-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

/* HEADER STYLE */
.lumen-header {
  position: sticky;
  top: 0;
  background-color: rgba(26, 35, 50, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(229, 225, 216, 0.1);
  z-index: 99;
  padding: 1rem 0;
}

.lumen-header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--lumen-container-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.lumen-logo-wrap {
  display: flex;
  align-items: center;
}

.lumen-logo {
  height: 44px;
  width: auto;
}

.lumen-desktop-nav ul {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.lumen-desktop-nav a {
  color: #E5E1D8;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 400;
  transition: color 0.3s ease;
  letter-spacing: 0.1em;
}

.lumen-desktop-nav a:hover {
  color: var(--lumen-accent);
}

/* HERO SECTION (Magazine Typefirst + Image Right) */
.lumen-hero {
  padding: 6rem 0 4rem;
  background-color: var(--lumen-primary);
  color: #FAF8F5;
  overflow: hidden;
}

.lumen-hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
  max-width: var(--lumen-container-w);
  margin: 0 auto;
  padding: 0 2rem;
}

.lumen-hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.lumen-label {
  display: inline-block;
  font-family: var(--lumen-font-sans);
  color: var(--lumen-accent);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  margin-bottom: 1rem;
}

.lumen-hero-title {
  font-family: var(--lumen-font-serif);
  font-size: 3.2rem;
  line-height: 1.3;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: #FAF8F5;
}

.lumen-drop {
  color: var(--lumen-accent);
}

.lumen-hero-subtitle {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #D3D6DC;
  margin-bottom: 2rem;
}

.lumen-hero-ctas {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.lumen-hero-badges {
  display: flex;
  gap: 1.5rem;
  border-top: 1px solid rgba(229, 225, 216, 0.2);
  padding-top: 1.5rem;
}

.lumen-badge-item {
  font-size: 0.8rem;
  color: var(--lumen-accent);
  letter-spacing: 0.08em;
}

.lumen-hero-image-wrap {
  position: relative;
  border: 1px solid var(--lumen-accent);
  padding: 8px;
}

.lumen-hero-img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  filter: grayscale(30%) contrast(110%);
}

.lumen-hero-image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  box-shadow: inset 0 0 40px rgba(26, 35, 50, 0.5);
  pointer-events: none;
}

/* BUTTONS */
.lumen-btn {
  display: inline-block;
  padding: 1rem 2.2rem;
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  letter-spacing: 0.1em;
  text-align: center;
  border-radius: 0;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  cursor: pointer;
  border: none;
}

.lumen-btn-sm {
  padding: 0.6rem 1.2rem;
  font-size: 0.8rem;
}

.lumen-btn-primary {
  background-color: var(--lumen-accent);
  color: var(--lumen-primary);
}

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

.lumen-btn-secondary {
  background-color: transparent;
  color: #FAF8F5;
  border: 1px solid rgba(229, 225, 216, 0.4);
}

.lumen-btn-secondary:hover {
  background-color: rgba(229, 225, 216, 0.1);
  border-color: var(--lumen-accent);
}

.lumen-btn-full {
  width: 100%;
}

/* SECTIONS STRUTURE (Magazine Archetype: Long-read structure, narrow text focus) */
.lumen-section {
  padding: 6rem 0;
  border-bottom: 1px solid var(--lumen-border);
}

.lumen-section-bg {
  background-color: #FAF6EE;
}

.lumen-section-narrow {
  max-width: var(--lumen-measure);
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.lumen-section-header {
  margin-bottom: 3rem;
}

.lumen-center {
  text-align: center;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.lumen-section-tag {
  display: block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--lumen-accent);
  letter-spacing: 0.25em;
  margin-bottom: 0.5rem;
}

.lumen-section-title {
  font-family: var(--lumen-font-serif);
  font-size: 2.2rem;
  color: var(--lumen-primary);
  font-weight: 700;
  line-height: 1.4;
}

.lumen-section-desc {
  font-size: 1rem;
  color: var(--lumen-text-light);
  margin-top: 1rem;
}

/* MAGAZINE ARTICLE BODY STYLE */
.lumen-article-body {
  max-width: var(--lumen-measure);
  margin: 0 auto;
}

.lumen-article-body p {
  margin-bottom: 1.8rem;
  font-size: 1.05rem;
  color: var(--lumen-text);
  text-align: justify;
}

/* Dropcap */
.lumen-dropcap-p::first-letter {
  font-family: var(--lumen-font-serif);
  font-size: 4.5rem;
  float: left;
  line-height: 1;
  padding-right: 0.75rem;
  padding-top: 0.2rem;
  color: var(--lumen-accent);
  font-weight: 700;
}

.lumen-blockquote {
  font-family: var(--lumen-font-serif);
  font-style: italic;
  font-size: 1.4rem;
  line-height: 1.7;
  color: var(--lumen-primary);
  border-left: 3px solid var(--lumen-accent);
  padding-left: 1.5rem;
  margin: 2.5rem 0;
}

/* COMPARISON TABLE */
.lumen-table-wrapper {
  overflow-x: auto;
  margin-top: 2rem;
  border: 1px solid var(--lumen-border);
}

.lumen-compare-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.lumen-compare-table th, 
.lumen-compare-table td {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--lumen-border);
}

.lumen-compare-table th {
  background-color: var(--lumen-primary);
  color: #FAF8F5;
  font-family: var(--lumen-font-sans);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
}

.lumen-highlight-col {
  background-color: rgba(197, 160, 89, 0.1) !important;
  border-left: 1px solid var(--lumen-accent);
  border-right: 1px solid var(--lumen-accent);
  color: var(--lumen-primary);
  font-weight: 700;
}

.lumen-tbl-feature {
  font-weight: 700;
  color: var(--lumen-primary);
  width: 25%;
}

.lumen-tbl-active {
  background-color: rgba(197, 160, 89, 0.05);
  border-left: 1px solid var(--lumen-accent);
  border-right: 1px solid var(--lumen-accent);
}

/* BENEFIT CARDS (S3 - Slate/Gold) */
.lumen-benefit-card {
  background-color: var(--lumen-card-bg);
  padding: 2.5rem;
  border: 1px solid var(--lumen-border);
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  display: flex;
  flex-direction: column;
}

.lumen-benefit-card:hover {
  transform: translateY(-5px);
  border-color: var(--lumen-accent);
  box-shadow: var(--lumen-shadow);
}

.lumen-benefit-icon {
  color: var(--lumen-accent);
  margin-bottom: 1.5rem;
}

.lumen-benefit-card h3 {
  font-family: var(--lumen-font-serif);
  font-size: 1.25rem;
  color: var(--lumen-primary);
  font-weight: 700;
  margin-bottom: 1rem;
}

.lumen-benefit-card p {
  font-size: 0.9rem;
  color: var(--lumen-text-light);
  line-height: 1.7;
}

/* TIMELINE (Scroll-Draw Spine Node Animation Core) */
.lumen-timeline-container {
  position: relative;
  max-width: 800px;
  margin: 4rem auto 0;
  padding-left: 3rem;
}

.lumen-timeline-spine {
  position: absolute;
  top: 0;
  left: 10px;
  width: 10px;
  height: 100%;
}

.lumen-spine-svg {
  width: 100%;
  height: 100%;
}

.lumen-timeline-step {
  position: relative;
  margin-bottom: 4rem;
}

.lumen-time-badge {
  position: absolute;
  left: -50px;
  top: 0;
  background-color: var(--lumen-accent);
  color: var(--lumen-primary);
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  transform: rotate(-90deg) translate(-10px, -15px);
  transform-origin: left top;
}

.lumen-time-content {
  background-color: var(--lumen-card-bg);
  padding: 2rem;
  border: 1px solid var(--lumen-border);
}

.lumen-time-content h3 {
  font-family: var(--lumen-font-serif);
  font-size: 1.3rem;
  color: var(--lumen-primary);
  margin-bottom: 1rem;
}

.lumen-time-content p {
  font-size: 0.95rem;
  color: var(--lumen-text-light);
}

/* SCENARIO CARDS */
.lumen-scenario-card {
  background-color: var(--lumen-card-bg);
  border: 1px solid var(--lumen-border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.lumen-scenario-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  filter: grayscale(10%) contrast(105%);
}

.lumen-sc-content {
  padding: 2rem;
}

.lumen-sc-content h4 {
  font-family: var(--lumen-font-serif);
  font-size: 1.2rem;
  color: var(--lumen-primary);
  margin-bottom: 1rem;
}

.lumen-sc-content p {
  font-size: 0.9rem;
  color: var(--lumen-text-light);
  margin-bottom: 1rem;
}

/* SPLIT FOUNDER SECTION */
.lumen-split-founder {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.lumen-founder-img-wrap {
  border: 1px solid var(--lumen-accent);
  padding: 8px;
  background-color: #FFFFFF;
}

.lumen-founder-img {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(20%);
}

.lumen-founder-content {
  display: flex;
  flex-direction: column;
}

.lumen-founder-signature {
  font-family: var(--lumen-font-serif);
  font-size: 1.2rem;
  color: var(--lumen-primary);
  margin-top: 1.5rem;
  font-weight: 700;
}

/* INTERACTIVE QUIZ DESIGN */
.lumen-quiz-container {
  max-width: 750px;
  margin: 2rem auto;
  background-color: var(--lumen-card-bg);
  border: 1px solid var(--lumen-border);
  padding: 3rem;
  box-shadow: var(--lumen-shadow);
}

.lumen-quiz-step {
  display: none;
}

.lumen-quiz-step.active {
  display: block;
}

.lumen-quiz-q {
  font-family: var(--lumen-font-serif);
  font-size: 1.4rem;
  color: var(--lumen-primary);
  margin-bottom: 2rem;
  font-weight: 700;
  line-height: 1.5;
}

.lumen-quiz-options {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.lumen-quiz-opt {
  display: block;
  width: 100%;
  text-align: left;
  padding: 1.2rem;
  background-color: var(--lumen-bg);
  border: 1px solid var(--lumen-border);
  font-family: var(--lumen-font-sans);
  font-size: 0.95rem;
  color: var(--lumen-text);
  cursor: pointer;
  transition: all 0.2s ease;
}

.lumen-quiz-opt:hover {
  background-color: #EAE6DD;
  border-color: var(--lumen-accent);
  padding-left: 1.5rem;
}

.lumen-quiz-progress-track {
  width: 100%;
  height: 4px;
  background-color: var(--lumen-bg);
  margin-top: 2rem;
  overflow: hidden;
}

.lumen-quiz-progress-indicator {
  width: 25%;
  height: 100%;
  background-color: var(--lumen-accent);
  transition: width 0.3s ease;
}

.lumen-quiz-result-title {
  font-family: var(--lumen-font-serif);
  font-size: 1.6rem;
  color: var(--lumen-primary);
  margin-bottom: 1.5rem;
  font-weight: 700;
}

.lumen-quiz-result-p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--lumen-text);
  margin-bottom: 2rem;
}

.lumen-quiz-reassure {
  font-size: 0.8rem;
  color: var(--lumen-text-light);
  line-height: 1.6;
  border-top: 1px solid var(--lumen-border);
  padding-top: 1.5rem;
  margin-bottom: 2rem;
}

/* PRICING PHILOSOPHY CARDS */
.lumen-pricing-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  margin: 2.5rem 0;
}

.lumen-price-feature-card {
  border-top: 2px solid var(--lumen-accent);
  padding-top: 1.5rem;
}

.lumen-price-feature-card h4 {
  font-family: var(--lumen-font-serif);
  font-size: 1.15rem;
  color: var(--lumen-primary);
  margin-bottom: 0.75rem;
}

.lumen-price-feature-card p {
  font-size: 0.85rem !important;
  color: var(--lumen-text-light) !important;
}

.lumen-center-p {
  text-align: center;
  font-weight: 700;
  margin-top: 2rem;
}

/* LOCAL RELEVANCE SPLIT */
.lumen-split-local {
  max-width: var(--lumen-measure);
  margin: 0 auto;
}

/* CHECKLIST */
.lumen-checklist-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.lumen-check-item {
  display: flex;
  gap: 1rem;
}

.lumen-check-box {
  color: var(--lumen-accent);
  font-size: 1.5rem;
  line-height: 1;
}

.lumen-check-text h4 {
  font-family: var(--lumen-font-serif);
  font-size: 1.1rem;
  color: var(--lumen-primary);
  margin-bottom: 0.5rem;
}

.lumen-check-text p {
  font-size: 0.85rem;
  color: var(--lumen-text-light);
}

/* FAQ STYLE */
.lumen-faq-group {
  max-width: 800px;
  margin: 0 auto;
}

.lumen-faq-group h3 {
  font-family: var(--lumen-font-serif);
  font-size: 1.2rem;
  color: var(--lumen-primary);
  border-bottom: 1px solid var(--lumen-accent);
  padding-bottom: 0.5rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.lumen-faq-item {
  border-bottom: 1px solid var(--lumen-border);
  padding: 1.5rem 0;
}

.lumen-faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: none;
  border: none;
  font-family: var(--lumen-font-sans);
  font-size: 1rem;
  font-weight: 700;
  color: var(--lumen-primary);
  cursor: pointer;
  text-align: left;
}

.lumen-faq-icon {
  font-size: 1.5rem;
  color: var(--lumen-accent);
  transition: transform 0.3s ease;
}

.lumen-faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.lumen-faq-answer p {
  font-size: 0.95rem;
  color: var(--lumen-text-light);
  padding-top: 1rem;
  line-height: 1.8;
}

/* LEAD FORM SPLIT PANEL (S6 = Split with Sidebar) */
.lumen-section-form-bg {
  background-color: var(--lumen-primary);
  color: #FAF8F5;
}

.lumen-section-form-bg .lumen-section-title {
  color: #FAF8F5;
}

.lumen-split-form {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
  align-items: start;
}

.lumen-form-sidebar {
  padding-right: 2rem;
}

.lumen-form-bullet-list {
  list-style: none;
  margin: 2rem 0;
}

.lumen-form-bullet-list li {
  margin-bottom: 1rem;
  border-bottom: 1px dashed rgba(229, 225, 216, 0.2);
  padding-bottom: 0.5rem;
  font-size: 0.95rem;
}

.lumen-privacy-guarantee {
  font-size: 0.8rem;
  color: #A5A8B0;
  line-height: 1.6;
}

.lumen-form-card {
  background-color: #FFFFFF;
  padding: 3rem;
  border: 1px solid rgba(229, 225, 216, 0.1);
}

.lumen-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.lumen-form-group {
  margin-bottom: 1.5rem;
}

.lumen-form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--lumen-primary);
  margin-bottom: 0.5rem;
}

.lumen-req {
  color: #C1121F;
}

.lumen-form-input, 
.lumen-form-textarea {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--lumen-border);
  font-family: var(--lumen-font-sans);
  font-size: 0.95rem;
  color: var(--lumen-text);
  background-color: var(--lumen-bg);
  transition: border-color 0.3s ease;
}

.lumen-form-input:focus, 
.lumen-form-textarea:focus {
  outline: none;
  border-color: var(--lumen-accent);
}

.lumen-form-textarea {
  height: 120px;
  resize: vertical;
}

.lumen-form-help {
  display: block;
  font-size: 0.75rem;
  color: var(--lumen-text-light);
  margin-top: 0.4rem;
}

.lumen-form-consent {
  margin-bottom: 2rem;
}

.lumen-consent-label {
  display: flex;
  gap: 0.8rem;
  font-size: 0.8rem;
  line-height: 1.5;
  color: var(--lumen-text);
  cursor: pointer;
}

.lumen-consent-checkbox {
  margin-top: 0.2rem;
  cursor: pointer;
}

.lumen-link {
  color: var(--lumen-accent);
  text-decoration: underline;
}

.lumen-link:hover {
  color: var(--lumen-accent-hover);
}

.lumen-form-status {
  margin-top: 1.5rem;
  padding: 1rem;
  font-size: 0.9rem;
  font-weight: 700;
  display: none;
}

.lumen-form-status.success {
  display: block;
  background-color: #D4EDDA;
  border: 1px solid #C3E6CB;
  color: #155724;
}

.lumen-form-status.error {
  display: block;
  background-color: #F8D7DA;
  border: 1px solid #F5C6CB;
  color: #721C24;
}

/* FOOTER */
.lumen-footer {
  background-color: #111823;
  color: #A5A8B0;
  padding: 5rem 0 3rem;
  font-size: 0.85rem;
  border-top: 1px solid rgba(229, 225, 216, 0.1);
}

.lumen-footer-container {
  max-width: var(--lumen-container-w);
  margin: 0 auto;
  padding: 0 2rem;
  text-align: center;
}

.lumen-footer-logo-wrap {
  margin-bottom: 2.5rem;
}

.lumen-operator-transparency {
  max-width: 800px;
  margin: 0 auto 3rem;
  background-color: rgba(255,255,255,0.02);
  border: 1px solid rgba(229, 225, 216, 0.05);
  padding: 2rem;
  text-align: left;
}

.lumen-operator-transparency p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.lumen-operator-transparency p:last-child {
  margin-bottom: 0;
}

.lumen-footer-nav ul {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2rem;
  list-style: none;
  margin-bottom: 3rem;
  border-bottom: 1px solid rgba(229, 225, 216, 0.05);
  padding-bottom: 2rem;
}

.lumen-footer-nav a {
  color: #A5A8B0;
  text-decoration: none;
  transition: color 0.3s ease;
}

.lumen-footer-nav a:hover {
  color: var(--lumen-accent);
}

.lumen-footer-bottom {
  font-size: 0.75rem;
  color: #71747E;
}

/* RESPONSIVE LAYOUTS */
@media (max-width: 991px) {
  .lumen-hero-container {
    grid-template-columns: 1fr;
  }
  .lumen-hero-image-wrap {
    order: -1;
    max-width: 600px;
    margin: 0 auto;
  }
  .lumen-split-founder {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .lumen-founder-img-wrap {
    max-width: 400px;
    margin: 0 auto;
  }
  .lumen-split-form {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .lumen-form-sidebar {
    padding-right: 0;
  }
}

@media (max-width: 768px) {
  .lumen-desktop-nav {
    display: none; /* Collapses to clean top layout */
  }
  .lumen-hero-title {
    font-size: 2.3rem;
  }
  .lumen-hero-ctas {
    flex-direction: column;
  }
  .lumen-quiz-container {
    padding: 1.5rem;
  }
  .lumen-form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }
}