/* ==========================================================================
   CSS CUSTOM PROPERTIES (SWISS EDITORIAL - METICULOUS, CLEAN Slate & Warm Gray)
   ========================================================================== */
:root {
    --l-bg-primary: #fdfcfb;
    --l-bg-secondary: #f4f1eb;
    --l-bg-dark: #0f1d26;
    --l-primary: #0f1d26;
    --l-accent: #cfa872;
    --l-accent-hover: #bfa068;
    --l-text-main: #222222;
    --l-text-muted: #5e666e;
    --l-text-light: #ffffff;
    --l-border-color: rgba(15, 29, 38, 0.15);
    --l-border-dark: #0f1d26;
    
    /* Fonts */
    --l-font-serif: 'Noto Serif JP', Georgia, serif;
    --l-font-sans: 'Noto Sans JP', sans-serif;
    
    /* Transitions */
    --l-transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--l-font-sans);
    color: var(--l-text-main);
    background-color: var(--l-bg-primary);
    font-size: 16px;
    line-height: 1.625;
}

body {
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--l-font-serif);
    font-weight: 700;
    color: var(--l-primary);
    line-height: 1.25;
}

p {
    margin-bottom: 1.25rem;
}

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

a {
    color: inherit;
    text-decoration: none;
}

/* Base Layout Helpers */
.lumen-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.lumen-section {
    padding: 7rem 0;
    border-bottom: 1px solid var(--l-border-color);
}

.lumen-bg-alt {
    background-color: var(--l-bg-secondary);
}

.lumen-caption-label {
    display: inline-block;
    font-family: var(--l-font-sans);
    font-weight: 700;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    color: var(--l-accent);
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.lumen-section-title {
    font-size: 2.25rem;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.lumen-section-header {
    margin-bottom: 4rem;
    max-width: 800px;
}

/* Header & Navigation */
.lumen-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(253, 252, 251, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--l-border-color);
}

.lumen-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

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

.lumen-logo-img {
    height: 40px;
}

.lumen-nav {
    display: flex;
}

.lumen-nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.lumen-nav-link {
    font-size: 0.875rem;
    font-weight: 400;
    color: var(--l-text-main);
    transition: var(--l-transition);
}

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

.lumen-header-cta-wrap {
    display: flex;
}

/* Buttons */
.lumen-btn-primary {
    display: inline-block;
    background-color: var(--l-primary);
    color: var(--l-text-light);
    padding: 0.875rem 1.75rem;
    font-weight: 700;
    font-size: 0.875rem;
    border: 1px solid var(--l-primary);
    cursor: pointer;
    transition: var(--l-transition);
}

.lumen-btn-primary:hover {
    background-color: transparent;
    color: var(--l-primary);
}

.lumen-btn-secondary {
    display: inline-block;
    background-color: transparent;
    color: var(--l-primary);
    padding: 0.875rem 1.75rem;
    font-weight: 700;
    font-size: 0.875rem;
    border: 1px solid var(--l-primary);
    cursor: pointer;
    transition: var(--l-transition);
}

.lumen-btn-secondary:hover {
    background-color: var(--l-primary);
    color: var(--l-text-light);
}/* ==========================================================================
   HERO STYLE (SWISS ASYMMETRICAL EDITORIAL STYLE)
   ========================================================================== */
.lumen-hero {
    padding: 6rem 0;
    border-bottom: 1px solid var(--l-border-dark);
}

.lumen-hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.lumen-hero-title {
    font-size: 3.5rem;
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.lumen-hero-title .lumen-accent {
    color: var(--l-accent);
}

.lumen-hero-lead {
    font-size: 1.125rem;
    color: var(--l-text-muted);
    margin-bottom: 2.5rem;
    max-width: 650px;
}

.lumen-hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 4rem;
}

.lumen-hero-trust {
    display: flex;
    gap: 2.5rem;
    border-top: 1px solid var(--l-border-color);
    padding-top: 2rem;
}

.lumen-trust-item {
    display: flex;
    flex-direction: column;
}

.lumen-trust-number {
    font-family: var(--l-font-serif);
    font-size: 1.5rem;
    color: var(--l-primary);
    font-weight: 700;
}

.lumen-trust-text {
    font-size: 0.8125rem;
    color: var(--l-text-muted);
}

.lumen-hero-media {
    position: relative;
    border: 1px solid var(--l-border-dark);
}

.lumen-hero-img-main {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

.lumen-media-overlay-card {
    position: absolute;
    bottom: -2rem;
    left: -2rem;
    background-color: var(--l-primary);
    color: var(--l-text-light);
    padding: 2rem;
    max-width: 320px;
    border: 1px solid var(--l-accent);
}

.lumen-overlay-text {
    font-size: 0.875rem;
    font-style: italic;
    margin-bottom: 0;
}

/* ==========================================================================
   SIGNATURE EFFECT: MARQUEE TICKER
   ========================================================================== */
.lumen-marquee-section {
    border-bottom: 1px solid var(--l-border-dark);
    background-color: var(--l-primary);
    color: var(--l-bg-secondary);
    overflow: hidden;
    padding: 1.5rem 0;
}

.lumen-marquee-container {
    width: 100vw;
    display: flex;
}

.lumen-marquee-track {
    display: flex;
    white-space: nowrap;
    animation: lumen-marquee 35s linear infinite;
}

.lumen-marquee-track span {
    font-family: var(--l-font-serif);
    font-size: 1rem;
    letter-spacing: 0.2em;
    padding-right: 4rem;
    font-weight: 700;
}

@keyframes lumen-marquee {
    0% { transform: translateX(0%); }
    100% { transform: translateX(-50%); }
}

.lumen-marquee-container:hover .lumen-marquee-track {
    animation-play-state: paused;
}/* ==========================================================================
   SWISS GRID LAYOUTS
   ========================================================================== */
.lumen-swiss-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
}

.lumen-intro-col {
    position: sticky;
    top: 120px;
    height: fit-content;
}

.lumen-body-paragraph {
    font-size: 1.0625rem;
    color: var(--l-text-main);
    margin-bottom: 2rem;
}

.lumen-problem-visual, .lumen-scenarios-visual {
    margin-top: 3rem;
    border: 1px solid var(--l-border-dark);
}

.lumen-standard-img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
}

/* Bento Grid */
.lumen-bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.lumen-bento-item {
    background-color: var(--l-bg-secondary);
    padding: 2.5rem;
    border: 1px solid var(--l-border-color);
    transition: var(--l-transition);
}

.lumen-bento-item:hover {
    border-color: var(--l-border-dark);
    background-color: var(--l-bg-primary);
}

.lumen-benefit-num {
    display: block;
    font-family: var(--l-font-serif);
    font-size: 2rem;
    font-weight: 700;
    color: var(--l-accent);
    margin-bottom: 1.5rem;
}

.lumen-benefit-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.lumen-benefit-desc {
    font-size: 0.9375rem;
    color: var(--l-text-muted);
}

/* Swiss Grid Features (Two Column Layout for 8 Features) */
.lumen-swiss-grid-cols {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.lumen-feature-card {
    border: 1px solid var(--l-border-color);
    padding: 3rem;
    transition: var(--l-transition);
    background-color: var(--l-bg-primary);
}

.lumen-feature-card:hover {
    border-color: var(--l-border-dark);
}

.lumen-feature-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--l-border-color);
    padding-bottom: 1rem;
}

.lumen-feature-id {
    font-family: var(--l-font-sans);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--l-accent);
}

.lumen-feature-title {
    font-size: 1.35rem;
}

.lumen-feature-desc {
    font-size: 0.9375rem;
    color: var(--l-text-muted);
    margin-bottom: 2rem;
}

.lumen-feature-details {
    font-size: 0.8125rem;
    color: var(--l-text-main);
    background-color: var(--l-bg-secondary);
    padding: 0.75rem 1rem;
    border-left: 2px solid var(--l-accent);
}/* ==========================================================================
   TIMELINE SPINE
   ========================================================================== */
.lumen-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    padding: 2rem 0;
}

.lumen-timeline::before {
    content: '';
    position: absolute;
    left: 2.5rem;
    top: 0;
    bottom: 0;
    width: 1px;
    background-color: var(--l-border-dark);
}

.lumen-timeline-item {
    display: flex;
    gap: 3rem;
    margin-bottom: 4rem;
}

.lumen-timeline-item:last-child {
    margin-bottom: 0;
}

.lumen-timeline-badge {
    flex-shrink: 0;
    width: 5rem;
    height: 5rem;
    background-color: var(--l-primary);
    color: var(--l-text-light);
    border: 1px solid var(--l-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: var(--l-font-serif);
    font-size: 1.125rem;
    z-index: 2;
}

.lumen-timeline-content {
    border-bottom: 1px solid var(--l-border-color);
    padding-bottom: 2rem;
    flex-grow: 1;
}

.lumen-timeline-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.lumen-timeline-desc {
    font-size: 1rem;
    color: var(--l-text-muted);
}

/* Scenario Boxes */
.lumen-scenario-box {
    border-bottom: 1px solid var(--l-border-color);
    padding-bottom: 2.5rem;
    margin-bottom: 2.5rem;
}

.lumen-scenario-box:last-child {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.lumen-scenario-tag {
    display: inline-block;
    background-color: var(--l-primary);
    color: var(--l-text-light);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    margin-bottom: 1rem;
}

.lumen-scenario-title {
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.lumen-scenario-desc {
    font-size: 0.9375rem;
    color: var(--l-text-muted);
}

/* Founder / Note Section */
.lumen-founder-section {
    background-color: var(--l-bg-primary);
}

/* Checklist Cards */
.lumen-checklist-card {
    border: 1px solid var(--l-border-color);
    padding: 2.5rem;
    background-color: var(--l-bg-primary);
}

.lumen-checklist-title {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    border-left: 3px solid var(--l-accent);
    padding-left: 1rem;
}

.lumen-checklist-desc {
    font-size: 0.9375rem;
    color: var(--l-text-muted);
}/* ==========================================================================
   TESTIMONIALS & GLOSSARY
   ========================================================================== */
.lumen-testimonials-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.lumen-testimonial-card {
    border: 1px solid var(--l-border-color);
    background-color: var(--l-bg-primary);
    padding: 2.5rem;
}

.lumen-testimonial-user {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.lumen-t-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid var(--l-border-dark);
}

.lumen-t-name {
    font-size: 1.0625rem;
    font-family: var(--l-font-serif);
}

.lumen-t-role {
    font-size: 0.8125rem;
    color: var(--l-text-muted);
}

.lumen-testimonial-text {
    font-size: 0.9375rem;
    color: var(--l-text-muted);
    font-style: italic;
    line-height: 1.7;
}

/* Glossary Section */
.lumen-glossary-item {
    padding: 2.5rem;
    border-bottom: 1px solid var(--l-border-color);
}

.lumen-glossary-term {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--l-primary);
}

.lumen-glossary-def {
    font-size: 0.9375rem;
    color: var(--l-text-muted);
}

/* ==========================================================================
   FAQ ACCORDION LAYOUT
   ========================================================================== */
.lumen-faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.lumen-faq-item {
    border-bottom: 1px solid var(--l-border-color);
}

.lumen-faq-item:first-child {
    border-top: 1px solid var(--l-border-color);
}

.lumen-faq-question {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 2rem 1rem;
    font-family: var(--l-font-serif);
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--l-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--l-transition);
}

.lumen-faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--l-accent);
}

.lumen-faq-item.active .lumen-faq-question::after {
    content: '-';
}

.lumen-faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 0 1rem;
}

.lumen-faq-item.active .lumen-faq-answer {
    max-height: 500px;
    padding-bottom: 2rem;
}

.lumen-faq-answer p {
    font-size: 0.9375rem;
    color: var(--l-text-muted);
    margin-bottom: 0;
}/* ==========================================================================
   LEAD FORM (SPLIT PANEL DESIGN)
   ========================================================================== */
.lumen-form-section {
    background-color: var(--l-bg-secondary);
}

.lumen-form-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 4rem;
    background-color: var(--l-bg-primary);
    border: 1px solid var(--l-border-dark);
    padding: 4rem;
}

.lumen-form-info {
    display: flex;
    flex-direction: column;
}

.lumen-form-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.lumen-form-intro {
    color: var(--l-text-muted);
    margin-bottom: 2.5rem;
    font-size: 0.9375rem;
}

.lumen-form-bullets {
    list-style: none;
    margin-top: auto;
}

.lumen-form-bullets li {
    font-size: 0.875rem;
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    position: relative;
}

.lumen-form-bullets li::before {
    content: '■';
    color: var(--l-accent);
    font-size: 0.625rem;
    position: absolute;
    left: 0;
    top: 2px;
}

/* Form Styles */
.lumen-lead-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

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

.lumen-label {
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--l-primary);
}

.lumen-required {
    color: #e03131;
}

.lumen-input {
    width: 100%;
    background-color: var(--l-bg-secondary);
    border: 1px solid var(--l-border-color);
    padding: 1rem;
    font-family: var(--l-font-sans);
    font-size: 0.9375rem;
    transition: var(--l-transition);
}

.lumen-input:focus {
    outline: none;
    border-color: var(--l-border-dark);
    background-color: var(--l-bg-primary);
}

.lumen-form-consent {
    margin: 0.5rem 0;
}

.lumen-checkbox-label {
    display: flex;
    gap: 0.75rem;
    cursor: pointer;
}

.lumen-checkbox {
    margin-top: 3px;
    accent-color: var(--l-primary);
}

.lumen-checkbox-text {
    font-size: 0.8125rem;
    color: var(--l-text-muted);
    line-height: 1.5;
}

.lumen-form-link {
    text-decoration: underline;
    color: var(--l-primary);
}

.lumen-btn-submit {
    background-color: var(--l-primary);
    color: var(--l-text-light);
    border: 1px solid var(--l-primary);
    padding: 1.25rem;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--l-transition);
    text-align: center;
}

.lumen-btn-submit:hover {
    background-color: transparent;
    color: var(--l-primary);
}

.lumen-form-status {
    font-size: 0.875rem;
    font-weight: 700;
    padding: 1rem;
    display: none;
    margin-top: 1rem;
}

.lumen-form-status.success {
    background-color: #ebfbee;
    color: #2b8a3e;
    border: 1px solid #b2f2bb;
    display: block;
}

.lumen-form-status.error {
    background-color: #fff5f5;
    color: #c92a2a;
    border: 1px solid #ffc9c9;
    display: block;
}/* ==========================================================================
   FOOTER SECTION
   ========================================================================== */
.lumen-footer {
    background-color: var(--l-primary);
    color: rgba(255, 255, 255, 0.7);
    padding: 6rem 0 3rem;
    font-size: 0.875rem;
    border-top: 1px solid var(--l-accent);
}

.lumen-footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 0.8fr 0.8fr 1.5fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.lumen-logo-footer {
    height: 40px;
    margin-bottom: 1.5rem;
    filter: brightness(0) invert(1);
}

.lumen-footer-desc {
    font-size: 0.8125rem;
    line-height: 1.7;
}

.lumen-footer-title {
    color: var(--l-text-light);
    font-family: var(--l-font-serif);
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.lumen-footer-list {
    list-style: none;
}

.lumen-footer-list li {
    margin-bottom: 0.75rem;
}

.lumen-footer-link {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--l-transition);
}

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

.lumen-footer-contact-text {
    line-height: 1.8;
}

.lumen-footer-operator-notice {
    font-size: 0.75rem;
    margin-top: 1.5rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.4);
}

.lumen-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.lumen-copyright {
    font-size: 0.75rem;
}

.lumen-back-to-top {
    background-color: transparent;
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: var(--l-text-light);
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--l-transition);
}

.lumen-back-to-top:hover {
    border-color: var(--l-accent);
    color: var(--l-accent);
}

/* ==========================================================================
   COOKIE CONSENT BANNER
   ========================================================================== */
.lumen-cookie-banner {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 1000;
    background-color: var(--l-primary);
    color: var(--l-text-light);
    border: 1px solid var(--l-accent);
    padding: 2rem;
    max-width: 480px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.lumen-cookie-banner-inner {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.lumen-cookie-text {
    font-size: 0.8125rem;
    line-height: 1.6;
    margin-bottom: 0;
}

.lumen-cookie-text a {
    color: var(--l-accent);
    text-decoration: underline;
}

.lumen-cookie-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.lumen-cookie-btn {
    padding: 0.5rem 1.25rem;
    font-weight: 700;
    font-size: 0.8125rem;
    cursor: pointer;
    transition: var(--l-transition);
}

.lumen-cookie-btn-accept {
    background-color: var(--l-accent);
    color: var(--l-primary);
    border: 1px solid var(--l-accent);
}

.lumen-cookie-btn-accept:hover {
    background-color: var(--l-accent-hover);
}

.lumen-cookie-btn-decline {
    background-color: transparent;
    color: var(--l-text-light);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.lumen-cookie-btn-decline:hover {
    border-color: var(--l-accent);
}

/* ==========================================================================
   RESPONSIVE LAYOUT RESPONSES
   ========================================================================== */
@media (max-width: 1024px) {
    .lumen-hero-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .lumen-col-right {
        order: -1;
    }
    .lumen-media-overlay-card {
        display: none;
    }
    .lumen-bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .lumen-swiss-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .lumen-intro-col {
        position: static;
    }
    .lumen-form-wrapper {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding: 2rem;
    }
    .lumen-footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .lumen-nav {
        display: none; /* Hide top nav in mobile for simplicity */
    }
    .lumen-hero-title {
        font-size: 2.5rem;
    }
    .lumen-bento-grid {
        grid-template-columns: 1fr;
    }
    .lumen-swiss-grid-cols {
        grid-template-columns: 1fr;
    }
    .lumen-testimonials-grid {
        grid-template-columns: 1fr;
    }
    .lumen-timeline::before {
        left: 1.5rem;
    }
    .lumen-timeline-badge {
        width: 3.5rem;
        height: 3.5rem;
        font-size: 0.875rem;
    }
    .lumen-timeline-item {
        gap: 1.5rem;
    }
    .lumen-footer-grid {
        grid-template-columns: 1fr;
    }
    .lumen-cookie-banner {
        left: 1rem;
        right: 1rem;
        bottom: 1rem;
        max-width: 100%;
    }
}