/* ==========================================================================
   JAPANESE SITE THEME
   Loaded only when current_lang == "ja"
   ========================================================================== */

html[lang="ja"] {
    --jp-ink: #1f2724;
    --jp-ink-soft: #58615d;
    --jp-paper: #f7f5f0;
    --jp-paper-deep: #eeebe3;
    --jp-vermilion: #a7352b;
    --jp-vermilion-dark: #7f261f;
    --jp-gold: #9a8052;
    --jp-line: #d9d4c9;
    --jp-green: #173c35;
    --brand: var(--jp-vermilion);
    --nz-gold: var(--jp-vermilion);
    --nz-green: var(--jp-green);
    color-scheme: light;
}

html[lang="ja"] body {
    font-family: "Noto Sans JP", "Yu Gothic", "Hiragino Kaku Gothic ProN", sans-serif;
    color: var(--jp-ink);
    background: var(--jp-paper);
    line-height: 1.9;
    letter-spacing: 0.025em;
}

html[lang="ja"] h1,
html[lang="ja"] h2,
html[lang="ja"] h3,
html[lang="ja"] .section-title,
html[lang="ja"] .hero-big-title,
html[lang="ja"] .b2b-main-title,
html[lang="ja"] .routes-main-title,
html[lang="ja"] .sol-left-title {
    font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
    font-weight: 600;
    letter-spacing: 0.06em;
}

/* Navigation: quiet, formal and information-first */
html[lang="ja"] .navbar-nz {
    height: 76px;
    background: rgba(22, 29, 27, 0.96) !important;
    border-bottom: 1px solid rgba(255, 255, 255, 0.16);
    box-shadow: none;
}

html[lang="ja"] .transparent-nav {
    background: linear-gradient(180deg, rgba(15, 22, 20, 0.9), rgba(15, 22, 20, 0.28)) !important;
}

html[lang="ja"] .navbar-nz.scrolled {
    height: 68px;
    background: rgba(250, 249, 246, 0.98) !important;
    border-bottom-color: var(--jp-line);
    box-shadow: 0 3px 16px rgba(31, 39, 36, 0.06);
}

html[lang="ja"] .brand-name {
    font-family: "Noto Serif JP", serif;
    font-weight: 600 !important;
    letter-spacing: 0.08em !important;
}

html[lang="ja"] .nz-nav .nav-link {
    position: relative;
    padding: 0.5rem 1.15rem !important;
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.12em;
}

html[lang="ja"] .nz-nav .nav-link::after {
    content: "";
    position: absolute;
    right: 1.15rem;
    bottom: 0;
    left: 1.15rem;
    height: 1px;
    background: var(--jp-vermilion);
    transform: scaleX(0);
    transition: transform 0.25s ease;
}

html[lang="ja"] .nz-nav .nav-link:hover::after,
html[lang="ja"] .nz-nav .nav-link.active::after {
    transform: scaleX(1);
}

html[lang="ja"] .btn-lang {
    min-width: 34px;
    padding: 4px 9px !important;
    border-radius: 0;
    font-weight: 500;
}

html[lang="ja"] .btn-lang.active {
    background: var(--jp-vermilion) !important;
    border-color: var(--jp-vermilion) !important;
}

html[lang="ja"] .read-progress {
    background: var(--jp-vermilion);
}

/* Shared controls */
html[lang="ja"] .btn-brand-solid,
html[lang="ja"] .btn-cta {
    border: 1px solid var(--jp-vermilion);
    border-radius: 2px;
    background: var(--jp-vermilion);
    box-shadow: none;
    font-weight: 600;
    letter-spacing: 0.1em;
    transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

html[lang="ja"] .btn-brand-solid:hover,
html[lang="ja"] .btn-cta:hover {
    background: var(--jp-vermilion-dark);
    border-color: var(--jp-vermilion-dark);
    box-shadow: none;
    transform: translateY(-2px);
}

html[lang="ja"] .section-label {
    color: var(--jp-vermilion) !important;
    font-size: 0.7rem;
    font-weight: 600 !important;
    letter-spacing: 0.22em !important;
}

/* Home hero */
html[lang="ja"] .hero-media {
    filter: brightness(0.58) saturate(0.82);
}

html[lang="ja"] .hero-mask {
    background:
        linear-gradient(90deg, rgba(14, 23, 20, 0.76) 0%, rgba(14, 23, 20, 0.2) 68%),
        linear-gradient(180deg, rgba(0, 0, 0, 0.18), rgba(0, 0, 0, 0.5));
}

html[lang="ja"] .hero-inner {
    padding-top: 76px;
}

html[lang="ja"] .branding-text {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    color: #f1e9dc;
    font-size: 0.73rem;
    font-weight: 500;
    letter-spacing: 0.2em;
}

html[lang="ja"] .branding-text::before {
    content: "";
    width: 38px;
    height: 1px;
    background: var(--jp-vermilion);
}

html[lang="ja"] .hero-big-title {
    max-width: 850px;
    margin-bottom: 1.6rem;
    font-size: clamp(2.5rem, 5.1vw, 4.8rem);
    line-height: 1.45;
    letter-spacing: 0.08em;
    text-shadow: 0 2px 18px rgba(0, 0, 0, 0.28);
}

html[lang="ja"] .text-highlight {
    background: none;
    color: #fff;
    -webkit-text-fill-color: currentColor;
}

html[lang="ja"] .hero-lead {
    max-width: 720px;
    margin-bottom: 2.4rem;
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
    font-weight: 400;
    line-height: 2;
}

/* Home content */
html[lang="ja"] .section-b2b-partnership,
html[lang="ja"] .section-b2b-routes {
    background-color: var(--jp-paper);
}

html[lang="ja"] .section-b2b-partnership {
    background-image: url("https://fjwheels-upload.oss-ap-northeast-1.aliyuncs.com/front/hero.jpg");
}

html[lang="ja"] .section-b2b-partnership::before {
    background: rgba(247, 245, 240, 0.95);
}

html[lang="ja"] .b2b-brand-text,
html[lang="ja"] .b2b-main-title,
html[lang="ja"] .routes-header-wrap .routes-main-title,
html[lang="ja"] .badge-text {
    color: var(--jp-ink);
}

html[lang="ja"] .b2b-main-title {
    position: relative;
    margin-bottom: 1.4rem;
    padding-left: 20px;
    border-left: 3px solid var(--jp-vermilion);
    font-size: 1.85rem;
    line-height: 1.65;
}

html[lang="ja"] .b2b-desc,
html[lang="ja"] .routes-header-wrap .routes-sub-title {
    color: var(--jp-ink-soft);
    line-height: 2;
}

html[lang="ja"] .green-dot {
    width: 6px;
    height: 6px;
    border-radius: 0;
    background: var(--jp-vermilion);
    transform: rotate(45deg);
}

html[lang="ja"] .b2b-bullet-item {
    color: var(--jp-green);
    font-weight: 500;
}

html[lang="ja"] .b2b-stats-row {
    border-top-color: var(--jp-line);
}

html[lang="ja"] .b2b-stat-num {
    color: var(--jp-vermilion);
    font-family: "Noto Serif JP", serif;
    font-weight: 600;
}

html[lang="ja"] .section-solutions {
    background-image: url("https://fjwheels-upload.oss-ap-northeast-1.aliyuncs.com/front/scene1.jpg");
}

html[lang="ja"] .section-solutions::before {
    background: rgba(17, 31, 27, 0.78);
}

html[lang="ja"] .sol-left-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 600;
    letter-spacing: 0.08em;
}

html[lang="ja"] .sol-brand-tag::after {
    height: 1px;
    background: var(--jp-vermilion);
}

html[lang="ja"] .sol-card-exact {
    border: 1px solid rgba(255, 255, 255, 0.18);
    border-radius: 0;
    box-shadow: none;
}

html[lang="ja"] .sol-card-exact:hover {
    transform: translateY(-4px);
    box-shadow: 0 18px 35px rgba(0, 0, 0, 0.15);
}

html[lang="ja"] .sol-card-icon {
    color: var(--jp-vermilion);
}

html[lang="ja"] .sol-card-exact h3 {
    line-height: 1.6;
}

html[lang="ja"] .btn-sol-exact,
html[lang="ja"] .btn-route-glass {
    border-radius: 0;
    letter-spacing: 0.08em;
}

html[lang="ja"] .sol-card-exact:hover .btn-sol-exact,
html[lang="ja"] .btn-route-glass:hover {
    border-color: var(--jp-vermilion);
    background: var(--jp-vermilion);
}

html[lang="ja"] .route-card-img {
    border-radius: 0;
    box-shadow: 8px 8px 0 var(--jp-paper-deep);
}

html[lang="ja"] .route-card-img:hover {
    transform: translateY(-4px);
    box-shadow: 8px 12px 0 var(--jp-paper-deep);
}

html[lang="ja"] .route-tag-glass {
    color: #f0c7bd;
    letter-spacing: 0.16em;
}

html[lang="ja"] .route-title-white {
    font-family: "Noto Serif JP", serif;
    font-weight: 600;
    line-height: 1.6;
}

html[lang="ja"] .footer-badge {
    border-color: var(--jp-line);
    border-radius: 0;
    background: transparent;
}

html[lang="ja"] .badge-line {
    background: var(--jp-vermilion);
}

html[lang="ja"] .section-process {
    background: var(--jp-paper-deep);
}

html[lang="ja"] .process-watermark {
    font-family: "Noto Serif JP", serif;
    color: rgba(31, 39, 36, 0.035);
}

html[lang="ja"] .step-icon {
    border-color: var(--jp-line);
    border-radius: 50%;
    box-shadow: none;
}

html[lang="ja"] .step-number-pill {
    border-radius: 0;
    background: var(--jp-vermilion);
    box-shadow: none;
}

html[lang="ja"] .step-item:hover .step-icon {
    border-color: var(--jp-vermilion);
    background: var(--jp-vermilion);
    box-shadow: none;
    transform: translateY(-4px);
}

html[lang="ja"] .step-item:hover .step-title {
    color: var(--jp-vermilion);
}

/* Inner-page heroes */
html[lang="ja"] .about-hero,
html[lang="ja"] .faq-hero,
html[lang="ja"] .contact-hero {
    min-height: 420px;
    display: flex;
    align-items: center;
    padding: 130px 0 72px;
}

html[lang="ja"] .about-hero {
    background-image: url("https://fjwheels-upload.oss-ap-northeast-1.aliyuncs.com/front/scene1.jpg");
}

html[lang="ja"] .faq-hero {
    background-image: url("https://fjwheels-upload.oss-ap-northeast-1.aliyuncs.com/front/scene3.jpg");
}

html[lang="ja"] .contact-hero {
    background-image: url("https://fjwheels-upload.oss-ap-northeast-1.aliyuncs.com/front/scene4.jpg");
}

html[lang="ja"] .about-hero::before,
html[lang="ja"] .faq-hero::before,
html[lang="ja"] .contact-hero::before {
    background: rgba(20, 35, 31, 0.78);
}

html[lang="ja"] .about-hero h1,
html[lang="ja"] .faq-hero h1,
html[lang="ja"] .contact-hero h1 {
    position: relative;
    margin-bottom: 1.7rem;
    padding-bottom: 1.2rem;
    font-size: clamp(2.25rem, 5vw, 3.8rem);
    letter-spacing: 0.14em;
}

html[lang="ja"] .about-hero h1::after,
html[lang="ja"] .faq-hero h1::after,
html[lang="ja"] .contact-hero h1::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 48px;
    height: 2px;
    background: var(--jp-vermilion);
    transform: translateX(-50%);
}

html[lang="ja"] .about-hero .lead,
html[lang="ja"] .faq-hero .lead,
html[lang="ja"] .contact-hero .lead {
    font-size: 1rem;
    font-weight: 400;
    line-height: 2;
    letter-spacing: 0.08em;
}

/* About */
html[lang="ja"] .section-about-intro,
html[lang="ja"] .section-about-fleet,
html[lang="ja"] .about-kpis {
    background: var(--jp-paper);
}

html[lang="ja"] .intro-content {
    max-width: 800px;
}

html[lang="ja"] .intro-content p {
    color: var(--jp-ink-soft);
    line-height: 2.15;
}

html[lang="ja"] .fleet-list li {
    color: var(--jp-ink);
    border-bottom-color: var(--jp-line);
    font-weight: 500;
}

html[lang="ja"] .check-icon,
html[lang="ja"] .pillar-num,
html[lang="ja"] .kpi-val {
    color: var(--jp-vermilion);
}

html[lang="ja"] .pillar-card {
    border: 1px solid var(--jp-line);
    border-radius: 0;
    box-shadow: none;
}

html[lang="ja"] .pillar-card:hover {
    border-color: var(--jp-vermilion);
    box-shadow: none;
    transform: translateY(-4px);
}

html[lang="ja"] .about-cta {
    background: var(--jp-green) !important;
}

/* FAQ */
html[lang="ja"] .section-faq-content {
    background: var(--jp-paper);
}

html[lang="ja"] .accordion-item {
    border: 0;
    border-bottom: 1px solid var(--jp-line);
    border-radius: 0 !important;
    margin: 0;
    box-shadow: none;
}

html[lang="ja"] .accordion-item:hover {
    box-shadow: none;
    transform: none;
}

html[lang="ja"] .accordion-button {
    padding: 25px 18px 25px 54px;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.7;
}

html[lang="ja"] .accordion-button::before {
    content: "Q";
    position: absolute;
    left: 18px;
    color: var(--jp-vermilion);
    font-family: "Noto Serif JP", serif;
    font-size: 1.25rem;
}

html[lang="ja"] .accordion-button:not(.collapsed) {
    color: var(--jp-vermilion);
    background: #fff;
}

html[lang="ja"] .accordion-body {
    position: relative;
    padding: 0 30px 28px 54px;
    color: var(--jp-ink-soft);
    line-height: 2;
}

html[lang="ja"] .accordion-body::before {
    content: "A";
    position: absolute;
    left: 18px;
    color: var(--jp-green);
    font-family: "Noto Serif JP", serif;
    font-size: 1.25rem;
}

html[lang="ja"] .faq-cta {
    background: var(--jp-green);
}

/* Contact */
html[lang="ja"] .contact-form-section {
    background: var(--jp-paper);
}

html[lang="ja"] .contact-info-item .icon {
    color: #f0c7bd;
}

html[lang="ja"] .form-container {
    border: 1px solid var(--jp-line);
    border-radius: 0;
    box-shadow: none;
}

html[lang="ja"] .form-label {
    color: var(--jp-ink);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: none;
}

html[lang="ja"] .form-control {
    border-color: var(--jp-line);
    border-radius: 0;
    background: #fbfaf7;
}

html[lang="ja"] .form-control:focus {
    border-color: var(--jp-vermilion);
    box-shadow: 0 0 0 3px rgba(167, 53, 43, 0.09);
}

/* Footer */
html[lang="ja"] .footer-nz {
    background: #17201d;
    padding-top: 80px;
}

html[lang="ja"] .footer-title {
    font-family: "Noto Serif JP", serif;
    font-weight: 600;
    letter-spacing: 0.12em;
}

html[lang="ja"] .footer-link:hover {
    color: #efc5bb;
    transform: none;
}

html[lang="ja"] .footer-qr {
    border-radius: 0;
}

/* Motion is more restrained on the Japanese theme */
html[lang="ja"] .reveal {
    transform: translateY(18px);
    transition-duration: 0.7s;
}

@media (max-width: 991px) {
    html[lang="ja"] .nz-nav {
        padding: 16px 0;
        background: #faf9f6;
    }

    html[lang="ja"] .nz-nav .nav-link {
        color: var(--jp-ink) !important;
        padding: 12px 20px !important;
        border-bottom: 1px solid var(--jp-line);
    }

    html[lang="ja"] .b2b-main-title {
        padding-left: 0;
        border-left: 0;
        text-align: center;
    }

    html[lang="ja"] .step-card {
        border: 1px solid var(--jp-line);
        border-radius: 0;
        box-shadow: none;
    }
}

@media (max-width: 768px) {
    html[lang="ja"] .hero-inner {
        text-align: left;
    }

    html[lang="ja"] .hero-big-title {
        font-size: clamp(2rem, 9vw, 3rem);
        line-height: 1.55;
    }

    html[lang="ja"] .hero-lead {
        max-width: 100%;
        margin-right: 0;
        margin-left: 0;
        font-size: 0.92rem;
    }

    html[lang="ja"] .hero-btns .btn-brand-solid {
        width: auto;
    }

    html[lang="ja"] .route-card-img {
        border-radius: 0;
    }

    html[lang="ja"] .about-hero,
    html[lang="ja"] .faq-hero,
    html[lang="ja"] .contact-hero {
        min-height: 72vh;
    }

    html[lang="ja"] .form-container {
        border-right: 0;
        border-left: 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    html[lang="ja"] *,
    html[lang="ja"] *::before,
    html[lang="ja"] *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}