:root {
/* Color Tokens */
--color-navy: #0A1128;
--color-alabaster: #FBFBFA;
--color-gold: #C5A059;
--color-slate: #1C1C1C;
--color-border: rgba(197, 160, 89, 0.15);
--color-border-light: rgba(28, 28, 28, 0.08);
--font-serif: 'Noto Serif JP', serif;
--font-sans: 'Inter', 'Noto Serif JP', sans-serif;
--ease-silk: cubic-bezier(0.16, 1, 0.3, 1);
--transition-duration: 0.8s;
--transition-hover: 0.3s;
}

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

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

body {
font-family: var(--font-sans);
font-size: 15px;
line-height: 1.8;
letter-spacing: 0.08em;
color: var(--color-slate);
background-color: var(--color-alabaster);
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
overflow-x: hidden;
font-feature-settings: "palt";
}

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

/* Accessibility Skip Link */
.skip-link {
position: absolute;
top: -100px;
left: 20px;
background-color: var(--color-navy);
color: var(--color-alabaster);
padding: 12px 24px;
font-size: 14px;
font-family: var(--font-sans);
z-index: 1000;
transition: top 0.3s var(--ease-silk);
border: 1px solid var(--color-gold);
}

.skip-link:focus-visible {
top: 20px;
outline: 2px solid var(--color-gold);
outline-offset: 2px;
}

*:focus-visible {
outline: 2px solid var(--color-gold);
outline-offset: 4px;
}

/* Container & Spacing Layout */
.container {
width: 100%;
max-width: 1200px;
margin: 0 auto;
padding: 0 24px;
}

@media (min-width: 768px) {
.container { padding: 0 40px; }
}
@media (min-width: 1024px) {
.container { padding: 0 64px; }
}

.section-padding {
padding: 64px 0;
}
@media (min-width: 1024px) {
.section-padding { padding: 120px 0; }
}

/* Grid & Layout System */
.grid-split {
display: grid;
grid-template-columns: 1fr;
gap: 40px;
align-items: center;
}

@media (min-width: 1024px) {
.grid-split {
grid-template-columns: 1.1fr 0.9fr;
gap: 80px;
}
.grid-split.reverse {
grid-template-columns: 0.9fr 1.1fr;
}
.grid-split.reverse .split-text-col {
order: -1;
}
}

.split-image-col {
width: 100%;
background-color: var(--color-navy);
position: relative;
overflow: hidden;
border: 1px solid var(--color-border);
aspect-ratio: 4 / 3;
}

.split-image {
width: 100%;
height: 100%;
object-fit: contain;
transition: transform var(--transition-duration) var(--ease-silk);
}

.split-image-col:hover .split-image {
transform: scale(1.02);
}

.split-text-col {
display: flex;
flex-direction: column;
align-items: flex-start;
}

.split-desc {
font-size: 15px;
line-height: 2.2;
color: var(--color-slate);
opacity: 0.85;
margin-bottom: 24px;
}

.bg-dark .split-desc {
color: var(--color-alabaster);
opacity: 0.8;
}

/* Header & Desktop Menu */
.header {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 80px;
z-index: 100;
background-color: transparent;
transition: background-color var(--transition-hover) var(--ease-silk),
box-shadow var(--transition-hover) var(--ease-silk),
height var(--transition-hover) var(--ease-silk);
display: flex;
align-items: center;
}

.header.scrolled {
background-color: rgba(251, 251, 250, 0.98);
box-shadow: 0 4px 30px rgba(0, 0, 0, 0.01);
height: 70px;
border-bottom: 1px solid var(--color-border-light);
}

.header-container {
display: flex;
justify-content: space-between;
align-items: center;
width: 100%;
}

.header-logo-link {
display: inline-block;
height: 48px;
transition: opacity var(--transition-hover) var(--ease-silk);
}
.header-logo-link:hover {
opacity: 0.85;
}
.header-logo-img {
height: 100%;
width: auto;
object-fit: contain;
}

.nav-desktop {
display: none;
}

@media (min-width: 1024px) {
.nav-desktop {
display: flex;
align-items: center;
gap: 32px;
}
.nav-link {
font-family: var(--font-serif);
font-size: 13px;
letter-spacing: 0.15em;
color: var(--color-slate);
position: relative;
padding: 8px 0;
transition: color var(--transition-hover) var(--ease-silk);
}
.nav-link:hover {
color: var(--color-gold);
}
.nav-link::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
width: 100%;
height: 1px;
background-color: var(--color-gold);
transform: scaleX(0);
transform-origin: right;
transition: transform var(--transition-hover) var(--ease-silk);
}
.nav-link:hover::after {
transform: scaleX(1);
transform-origin: left;
}
}

.menu-trigger {
display: flex;
align-items: center;
justify-content: center;
width: 44px;
height: 44px;
position: relative;
z-index: 102;
color: var(--color-slate);
background: transparent;
border: none;
cursor: pointer;
}
@media (min-width: 1024px) {
.menu-trigger { display: none; }
}

.menu-trigger-icon {
width: 24px;
height: 24px;
fill: currentColor;
transition: transform var(--transition-hover) var(--ease-silk);
}

/* Mobile Navigation Menu Drawer */
.mobile-menu {
position: fixed;
top: 0;
right: -100%;
width: 100%;
max-width: 400px;
height: 100vh;
background-color: var(--color-navy);
color: var(--color-alabaster);
z-index: 101;
padding: 100px 40px 40px;
display: flex;
flex-direction: column;
justify-content: space-between;
box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
transition: right 0.5s var(--ease-silk);
overflow-y: auto;
}

.mobile-menu.active {
right: 0;
}

.mobile-menu-overlay {
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100vh;
background-color: rgba(10, 17, 40, 0.6);
backdrop-filter: blur(4px);
z-index: 100;
opacity: 0;
visibility: hidden;
transition: opacity 0.5s var(--ease-silk), visibility 0.5s var(--ease-silk);
}

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

.mobile-logo-wrap {
margin-bottom: 40px;
display: flex;
justify-content: center;
height: 44px;
}
.mobile-logo-img {
height: 100%;
width: auto;
object-fit: contain;
}

.nav-mobile-list {
display: flex;
flex-direction: column;
gap: 24px;
list-style: none;
}

.nav-mobile-link {
font-family: var(--font-serif);
font-size: 16px;
letter-spacing: 0.15em;
color: var(--color-alabaster);
display: block;
padding: 8px 0;
border-bottom: 1px solid rgba(251, 251, 250, 0.1);
transition: color var(--transition-hover) var(--ease-silk);
}
.nav-mobile-link:hover {
color: var(--color-gold);
}

.mobile-footer {
margin-top: 40px;
font-size: 11px;
opacity: 0.6;
text-align: center;
letter-spacing: 0.1em;
border-top: 1px solid rgba(251, 251, 250, 0.1);
padding-top: 24px;
}

/* Hero First View */
.hero, .about-hero {
height: 100vh;
min-height: 600px;
display: flex;
align-items: center;
position: relative;
background-color: var(--color-navy);
overflow: hidden;
padding-top: 80px;
}

.about-hero {
height: 55vh;
min-height: 380px;
}

.hero-bg, .about-hero-bg {
position: absolute;
top: 0;
right: 0;
width: 100%;
height: 100%;
background-color: var(--color-navy);
z-index: 1;
}

.hero-img, .about-hero-img {
width: 100%;
height: 100%;
object-fit: contain;
object-position: center;
opacity: 0.15;
}

.hero-content, .about-hero-content {
position: relative;
z-index: 2;
max-width: 700px;
color: var(--color-alabaster);
}

.hero-badge-wrap {
height: 64px;
margin-bottom: 24px;
}
.hero-badge {
height: 100%;
width: auto;
object-fit: contain;
}

.hero-title, .about-hero-title {
font-family: var(--font-serif);
font-size: 32px;
font-weight: 200;
line-height: 1.5;
letter-spacing: 0.25em;
color: var(--color-alabaster);
margin-bottom: 24px;
}

.hero-desc, .about-hero-desc {
font-family: var(--font-sans);
font-size: 15px;
font-weight: 300;
line-height: 2.0;
color: var(--color-alabaster);
margin-bottom: 40px;
opacity: 0.9;
}

@media (min-width: 768px) {
.hero-title, .about-hero-title { font-size: 42px; }
.hero-desc, .about-hero-desc { font-size: 16px; }
}

/* Breadcrumbs trail */
.breadcrumb-nav {
padding: 24px 0 0 0;
font-size: 12px;
color: rgba(28, 28, 28, 0.6);
}
.breadcrumb-list {
display: flex;
flex-wrap: wrap;
list-style: none;
gap: 8px;
align-items: center;
}
.breadcrumb-item {
display: flex;
align-items: center;
gap: 8px;
}
.breadcrumb-item a {
text-decoration: none;
color: inherit;
transition: color var(--transition-hover) var(--ease-silk);
}
.breadcrumb-item a:hover {
color: var(--color-gold);
}
.breadcrumb-separator {
display: inline-block;
width: 6px;
height: 10px;
opacity: 0.5;
}

/* Molecular Typography Elements */
.h2-title {
font-family: var(--font-serif);
font-size: 24px;
font-weight: 300;
line-height: 1.6;
letter-spacing: 0.18em;
color: var(--color-navy);
margin-bottom: 16px;
}
@media (min-width: 768px) {
.h2-title { font-size: 32px; }
}

.bg-dark .h2-title {
color: var(--color-alabaster);
}

.section-label {
display: inline-block;
font-family: var(--font-serif);
font-size: 12px;
letter-spacing: 0.2em;
color: var(--color-gold);
margin-bottom: 16px;
}

/* Noble Sincere Brand Button */
.btn-brand {
display: inline-flex;
align-items: center;
justify-content: center;
min-height: 50px;
padding: 12px 32px;
border: 1px solid var(--color-slate);
color: var(--color-slate);
font-family: var(--font-serif);
font-size: 12px;
letter-spacing: 0.15em;
transition: all var(--transition-hover) var(--ease-silk);
background-color: transparent;
text-decoration: none;
}

.btn-brand:hover {
border-color: var(--color-gold);
background-color: rgba(197, 160, 89, 0.05);
color: var(--color-gold);
}

.bg-dark .btn-brand {
border-color: rgba(251, 251, 250, 0.3);
color: var(--color-alabaster);
}
.bg-dark .btn-brand:hover {
border-color: var(--color-gold);
background-color: rgba(197, 160, 89, 0.08);
color: var(--color-gold);
}

/* About / Standard Text layout utility classes */
.about-center-wrap {
max-width: 800px;
margin: 0 auto;
text-align: center;
}
.about-text {
font-size: 15px;
line-height: 2.4;
color: var(--color-slate);
opacity: 0.9;
}
@media (min-width: 768px) {
.about-text { font-size: 16px; }
}

.certification-shield-wrap {
height: 80px;
margin: 0 auto 24px;
display: flex;
justify-content: center;
}
.certification-shield {
max-height: 48px;
height: auto;
width: auto;
object-fit: contain;
}

.badge-preparation {
display: inline-block;
background-color: transparent;
border: 1px solid var(--color-gold);
color: var(--color-gold);
font-size: 11px;
font-weight: 500;
padding: 4px 16px;
letter-spacing: 0.15em;
margin-bottom: 24px;
}

/* Standard Accordion Elements (style tag relocation) */
.faq-container {
margin-top: 40px;
}
.faq-accordion-item {
border-bottom: 1px solid var(--color-border-light);
padding: 24px 0;
}
.faq-summary {
font-family: var(--font-serif);
font-size: 16px;
font-weight: 400;
color: var(--color-navy);
cursor: pointer;
list-style: none;
display: flex;
justify-content: space-between;
align-items: center;
outline-offset: 4px;
}
.faq-summary::-webkit-details-marker {
display: none;
}
.faq-icon {
transition: transform var(--transition-hover) var(--ease-silk);
display: inline-block;
width: 24px;
text-align: center;
color: var(--color-gold);
}
details[open] .faq-icon {
transform: rotate(45deg);
}
.faq-answer {
padding-top: 16px;
font-size: 15px;
line-height: 2.2;
color: var(--color-slate);
opacity: 0.9;
}

/* Contact Page Form Standard Elements (style tag relocation) */
.brand-form {
width: 100%;
}
.form-group {
margin-bottom: 32px;
}
.form-label {
display: block;
font-family: var(--font-serif);
font-size: 14px;
font-weight: 400;
color: var(--color-navy);
margin-bottom: 8px;
}
.form-label span {
color: var(--color-gold);
font-size: 11px;
margin-left: 8px;
}
.form-input, .form-select, .form-textarea {
width: 100%;
min-height: 48px;
padding: 12px 16px;
border: 1px solid var(--color-border);
background-color: var(--color-alabaster);
font-family: var(--font-sans);
font-size: 14px;
outline-offset: 4px;
color: var(--color-slate);
transition: border-color var(--transition-hover) var(--ease-silk);
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
border-color: var(--color-gold);
outline: none;
}
.form-textarea {
resize: vertical;
line-height: 1.8;
}
.form-checkbox-label {
display: inline-flex;
align-items: center;
font-size: 13px;
color: var(--color-slate);
cursor: pointer;
text-align: left;
gap: 8px;
}
.form-checkbox {
width: 16px;
height: 16px;
accent-color: var(--color-gold);
cursor: pointer;
}

/* Specified Commercial Transactions (Legal) Page Lists (style tag relocation) */
.legal-item {
display: flex;
flex-direction: column;
padding: 24px 0;
border-bottom: 1px solid var(--color-border-light);
gap: 12px;
}
.legal-term {
width: 100%;
font-family: var(--font-serif);
font-size: 14px;
color: var(--color-navy);
font-weight: 400;
}
.legal-desc {
font-size: 14px;
color: var(--color-slate);
opacity: 0.9;
}
@media (min-width: 768px) {
.legal-item {
flex-direction: row;
align-items: center;
gap: 40px;
}
.legal-term {
width: 220px;
flex-shrink: 0;
}
}

/* News List */
.news-container {
border-top: 1px solid var(--color-border);
margin-top: 40px;
}
.news-item {
display: flex;
flex-direction: column;
padding: 24px 0;
border-bottom: 1px solid var(--color-border-light);
gap: 12px;
}
.news-meta {
display: flex;
gap: 24px;
font-size: 12px;
color: rgba(28, 28, 28, 0.4);
font-family: var(--font-sans);
}
.news-placeholder-text {
font-size: 15px;
color: rgba(28, 28, 28, 0.7);
line-height: 2.0;
}
@media (min-width: 768px) {
.news-item {
flex-direction: row;
align-items: center;
gap: 40px;
}
.news-meta {
width: 200px;
flex-shrink: 0;
gap: 32px;
}
}

.contact-box {
text-align: center;
max-width: 700px;
margin: 0 auto;
}

/* Value Columns (Three Pillars) */
.value-grid {
display: grid;
grid-template-columns: 1fr;
gap: 32px;
margin-top: 56px;
}
@media (min-width: 768px) {
.value-grid { grid-template-columns: repeat(3, 1fr); }
}
.value-card {
border: 1px solid var(--color-border);
padding: 40px 32px;
background-color: var(--color-alabaster);
transition: border-color var(--transition-hover) var(--ease-silk);
}
.value-card:hover {
border-color: var(--color-gold);
}
.value-number {
font-family: var(--font-serif);
font-size: 18px;
color: var(--color-gold);
margin-bottom: 24px;
display: block;
}
.value-title {
font-family: var(--font-serif);
font-size: 18px;
margin-bottom: 16px;
}
.value-desc {
font-size: 14px;
color: var(--color-slate);
opacity: 0.8;
}

/* Footer Section */
.footer {
background-color: var(--color-navy);
color: var(--color-alabaster);
padding: 64px 0 32px;
border-top: 1px solid var(--color-border);
}
.footer-grid {
display: grid;
grid-template-columns: 1fr;
gap: 40px;
margin-bottom: 64px;
}
@media (min-width: 768px) {
.footer-grid { grid-template-columns: 1.5fr 2fr; }
}
.footer-logo-link {
display: inline-block;
height: 40px;
margin-bottom: 24px;
transition: opacity var(--transition-hover) var(--ease-silk);
}
.footer-logo-link:hover {
opacity: 0.85;
}
.footer-logo-img {
height: 100%;
width: auto;
object-fit: contain;
}
.footer-tagline {
font-size: 13px;
opacity: 0.7;
max-width: 320px;
line-height: 2.0;
}
.footer-nav-grid {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 24px;
}
@media (min-width: 1024px) {
.footer-nav-grid { grid-template-columns: repeat(3, 1fr); }
}
.footer-nav-group-title {
font-family: var(--font-serif);
font-size: 13px;
color: var(--color-gold);
margin-bottom: 16px;
letter-spacing: 0.1em;
}
.footer-nav-list {
list-style: none;
display: flex;
flex-direction: column;
gap: 12px;
}
.footer-nav-link {
font-size: 12px;
opacity: 0.8;
text-decoration: none;
color: inherit;
transition: color var(--transition-hover) var(--ease-silk), opacity var(--transition-hover) var(--ease-silk);
}
.footer-nav-link:hover {
color: var(--color-gold);
opacity: 1;
}
.footer-bottom {
display: flex;
flex-direction: column;
gap: 16px;
border-top: 1px solid rgba(251, 251, 250, 0.08);
padding-top: 32px;
font-size: 11px;
opacity: 0.6;
letter-spacing: 0.1em;
}
@media (min-width: 768px) {
.footer-bottom {
flex-direction: row;
justify-content: space-between;
align-items: center;
}
}
.footer-bottom-links {
display: flex;
gap: 24px;
}

/* Scroll Animation classes */
.js-scroll-reveal {
opacity: 0;
transform: translateY(20px);
transition: opacity 1.0s var(--ease-silk), transform 1.0s var(--ease-silk);
}
.js-scroll-reveal.revealed {
opacity: 1;
transform: translateY(0);
}

/* Micro-Utility Classes (style tag relocation for general spacing/alignment) */
.text-left-align {
text-align: left !important;
}
.max-width-medium {
max-width: 800px !important;
}
.max-width-small {
max-width: 680px !important;
}
.margin-bottom-large {
margin-bottom: 56px !important;
}
.margin-bottom-medium {
margin-bottom: 32px !important;
}
.margin-bottom-small {
margin-bottom: 24px !important;
}
.font-size-medium {
font-size: 20px !important;
}
.font-size-small {
font-size: 14px !important;
}
.leading-wide {
line-height: 2.2 !important;
}
.opacity-high {
opacity: 0.9 !important;
}
.gold-accent-txt {
color: var(--color-gold) !important;
font-size: 11px !important;
letter-spacing: 0.1em !important;
font-family: var(--font-sans) !important;
}
/* Header visibility fix: dark header + light navigation at page top,
   white header + dark navigation after scrolling. */
.header:not(.scrolled) {
  background-color: rgba(10, 17, 40, 0.92);
  border-bottom: 1px solid rgba(251, 251, 250, 0.12);
}

.header:not(.scrolled) .nav-link,
.header:not(.scrolled) .menu-trigger {
  color: var(--color-alabaster);
}

.header.scrolled .nav-link,
.header.scrolled .menu-trigger {
  color: var(--color-slate);
}


/* === PC header visibility fix === */
@media (min-width:1024px){
.header{
background:rgba(255,255,255,.92)!important;
backdrop-filter:blur(8px);
}
.header:not(.scrolled){
box-shadow:0 1px 8px rgba(0,0,0,.08);
}
.nav-link{
color:#222!important;
font-weight:500;
}
}

/* === Desktop image display fix === */
@media (min-width:1024px){
.split-image{
object-fit:contain!important;
object-position:center center!important;
background:#fff;
}
}