/* ===================================================
   LYON株式会社 - Premium Corporate Redesign
   Japanese Premium × International Business × Technology
   Inspired by Apple / Sony / MUJI / 高端日本企业官网
   Palette: 白 #F7F7F5 / 深黑 #080B12 / 文字 #111111 / 品牌蓝 #4A9EFF
   Philosophy: Minimal, Premium, Elegant, Trust, generous but meaningful whitespace
   =================================================== */

:root {
    /* --- Brand Palette --- */
    --bg: #F7F7F5;
    --bg-alt: #FFFFFF;
    --ink: #111111;
    --ink-soft: #333333;
    --text-mid: #666666;
    --text-faint: #999999;
    --navy: #080B12;
    --navy-soft: #0E1420;
    --accent: #4A9EFF;
    --accent-soft: rgba(74, 158, 255, 0.10);
    --line: #e3e3df;
    --line-dark: rgba(255,255,255,0.08);

    /* --- Typography --- */
    --font-jp: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', 'Yu Gothic', sans-serif;
    --font-en: 'Helvetica Neue', 'Inter', 'Arial', sans-serif;

    /* --- Spacing (based on 8px) --- */
    --sp-1: 8px;
    --sp-2: 16px;
    --sp-3: 24px;
    --sp-4: 32px;
    --sp-5: 48px;
    --sp-6: 64px;
    --sp-7: 96px;
    --sp-8: 128px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-jp);
    color: var(--ink);
    line-height: 1.9;
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 300;
    letter-spacing: 0.2px;
}

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

img { max-width: 100%; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}

/* --- Typography --- */
.section-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 4px;
    margin-bottom: 14px;
    font-family: var(--font-en);
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(24px, 3.2vw, 34px);
    font-weight: 500;
    color: var(--ink);
    letter-spacing: 1.5px;
    margin-bottom: 18px;
    line-height: 1.4;
}

.section-desc {
    font-size: 14px;
    color: var(--text-mid);
    line-height: 2;
    max-width: 560px;
}

/* --- Header --- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(247,247,245,0.92);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(17,17,17,0.06);
    z-index: 1000;
    height: 68px;
}

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

.header-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-logo-img {
    height: 30px;
    width: auto;
}

.header-logo-text {
    display: flex;
    flex-direction: column;
}

.header-logo-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--ink);
    letter-spacing: 0.5px;
}

.header-logo-sub {
    font-size: 8px;
    color: var(--text-faint);
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: var(--font-en);
}

.nav {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    padding: 8px 20px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-mid);
    letter-spacing: 1px;
    transition: color 0.25s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 2px;
    transform: translateX(-50%) scaleX(0);
    width: 16px;
    height: 1px;
    background: var(--accent);
    transition: transform 0.3s ease;
}

.nav-link:hover {
    color: var(--ink);
}

.nav-link.active {
    color: var(--ink);
    font-weight: 600;
}

.nav-link.active::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-link.contact-link {
    background: var(--ink);
    color: #fff;
    padding: 12px 28px;
    font-weight: 600;
    margin-left: 20px;
    letter-spacing: 1.5px;
    font-size: 11px;
    border-radius: 2px;
    transition: background 0.3s ease;
}

.nav-link.contact-link:hover {
    background: var(--navy);
    color: #fff;
}

.nav-link.contact-link::after { display: none; }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}
.hamburger span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--ink);
    transition: all 0.3s;
}

/* --- Hero --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 68px;
    background: var(--navy);
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background-image: url('/static/img/hero-japan.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.35;
    transform: scale(1.02);
    animation: heroFade 1.6s ease-out both;
}

.hero-bg::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        90deg,
        rgba(8,11,18,0.92) 0%,
        rgba(8,11,18,0.65) 45%,
        rgba(8,11,18,0.35) 100%
    );
}

@keyframes heroFade {
    from { opacity: 0; }
    to { opacity: 0.35; }
}

.hero .container {
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 720px;
    padding: var(--sp-7) 0;
}

.hero-suptitle {
    font-size: 11px;
    font-weight: 500;
    color: rgba(255,255,255,0.45);
    letter-spacing: 5px;
    text-transform: uppercase;
    margin-bottom: 24px;
    font-family: var(--font-en);
}

.hero-en-title {
    font-family: var(--font-en);
    font-size: clamp(38px, 6vw, 68px);
    font-weight: 700;
    color: #fff;
    line-height: 1.08;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

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

.hero-title-main {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 500;
    color: #fff;
    line-height: 1.5;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.hero-tag {
    font-family: var(--font-en);
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 28px;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.12);
    display: inline-block;
}

.hero-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    line-height: 2;
    margin-bottom: 48px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
}

/* Scroll indicator */
.hero-scroll {
    position: absolute;
    bottom: 32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.4);
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
}

.hero-scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.5), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { transform: translateY(0); opacity: 0.6; }
    50% { transform: translateY(6px); opacity: 0.2; }
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 40px;
    font-size: 12px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    letter-spacing: 2px;
    background: none;
    border: none;
    border-radius: 2px;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}
.btn-primary:hover {
    background: #3b8ae0;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(74,158,255,0.3);
}

.btn-outline {
    border: 1px solid rgba(255,255,255,0.25);
    color: rgba(255,255,255,0.9);
}
.btn-outline:hover {
    border-color: rgba(255,255,255,0.7);
    color: #fff;
    background: rgba(255,255,255,0.06);
}

.btn-dark {
    background: var(--ink);
    color: #fff;
}
.btn-dark:hover {
    background: var(--navy);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 54px;
    font-size: 12px;
}

/* --- Section Base --- */
.section {
    padding: var(--sp-8) 0;
}

.section-header {
    margin-bottom: var(--sp-6);
}

.section-header.centered {
    text-align: center;
}

.section-header.centered .section-desc {
    margin: 0 auto;
}

/* --- Section: Message --- */
.section-message {
    background: var(--bg);
    border-bottom: 1px solid var(--line);
}

.message-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: end;
}

.message-quote {
    font-size: 24px;
    font-weight: 400;
    color: var(--ink);
    line-height: 1.7;
    letter-spacing: 0.5px;
    margin-bottom: 24px;
}

.message-quote-mark {
    color: var(--accent);
    font-size: 40px;
    font-weight: 300;
    line-height: 0;
    vertical-align: -10px;
    margin-right: 4px;
}

.message-body p {
    font-size: 13px;
    color: var(--text-mid);
    line-height: 2.2;
    margin-bottom: 20px;
}

.message-sign {
    font-size: 12px;
    color: var(--ink);
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-top: 32px;
}

.message-sign-label {
    font-size: 10px;
    color: var(--text-faint);
    letter-spacing: 1.5px;
    display: block;
    margin-bottom: 4px;
}

/* --- Section: Values --- */
.section-values {
    background: var(--bg-alt);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
}

.value-card {
    background: var(--bg-alt);
    padding: 56px 40px;
    transition: background 0.3s ease;
}

.value-card:hover {
    background: #fcfcfb;
}

.value-num {
    font-size: 40px;
    font-weight: 200;
    color: var(--accent);
    margin-bottom: 20px;
    letter-spacing: -2px;
    font-family: var(--font-en);
}

.value-card-title {
    font-size: 17px;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.value-card-desc {
    font-size: 13px;
    color: var(--text-mid);
    line-height: 2;
}

/* --- Section: Business --- */
.section-business {
    background: var(--bg);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--line);
    border: 1px solid var(--line);
}

.business-card {
    background: var(--bg);
    padding: 48px 40px;
    transition: background 0.3s ease;
}

.business-card:hover {
    background: var(--bg-alt);
}

.business-icon {
    font-size: 28px;
    display: block;
    margin-bottom: 16px;
}

.business-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.business-card-desc {
    font-size: 13px;
    color: var(--text-mid);
    line-height: 2;
}

/* --- Section: Numbers --- */
.section-numbers {
    background: var(--navy);
    border-top: none;
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.number-item {
    text-align: center;
    padding: 64px 24px;
    position: relative;
}

.number-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background: var(--line-dark);
}

.number-value {
    display: block;
    font-size: 34px;
    font-weight: 300;
    color: #fff;
    margin-bottom: 8px;
    letter-spacing: 1px;
    font-family: var(--font-en);
}

.number-label {
    display: block;
    font-size: 11px;
    color: rgba(255,255,255,0.4);
    letter-spacing: 2px;
}

/* --- CTA --- */
.section-cta {
    background: var(--bg-alt);
    padding: var(--sp-7) 0;
    text-align: center;
}

.cta-title {
    font-size: clamp(22px, 3vw, 30px);
    font-weight: 400;
    color: var(--ink);
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.cta-desc {
    font-size: 13px;
    color: var(--text-mid);
    margin-bottom: 40px;
}

/* --- Page Header (About/Contact) --- */
.page-hero {
    padding: 160px 0 96px;
    background: var(--navy);
}

.page-hero-label {
    font-size: 10px;
    font-weight: 500;
    color: rgba(255,255,255,0.4);
    letter-spacing: 5px;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-family: var(--font-en);
}

.page-hero-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 400;
    color: #fff;
    letter-spacing: 1px;
}

/* --- About: Message Block --- */
.about-message-block {
    max-width: 720px;
    margin: 0 auto;
}

.about-message-text {
    font-size: 15px;
    color: #555;
    line-height: 2.2;
    margin-bottom: 24px;
}

.about-message-sign {
    font-size: 13px;
    color: #1a1a1a;
    font-weight: 500;
    margin-top: 36px;
    text-align: right;
}

/* --- Info Table --- */
.table-wrap {
    max-width: 720px;
    margin: 0 auto;
}

.info-table {
    width: 100%;
    border-collapse: collapse;
    border-top: 2px solid #1a1a1a;
}

.info-table th,
.info-table td {
    padding: 18px 20px;
    border-bottom: 1px solid #eee;
    text-align: left;
    font-size: 13px;
    vertical-align: top;
}

.info-table th {
    color: #1a1a1a;
    font-weight: 500;
    width: 130px;
    white-space: nowrap;
    letter-spacing: 0.3px;
    background: #fafafa;
}

.info-table td {
    color: #555;
    line-height: 1.9;
}

/* --- About: Vision --- */
.about-vision {
    text-align: center;
    padding: 80px 0;
    background: #f8f8f8;
}

.about-vision-text {
    font-size: 24px;
    font-weight: 400;
    color: #1a1a1a;
    letter-spacing: 1px;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* --- Contact --- */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}

.contact-block-title {
    font-size: 14px;
    font-weight: 500;
    color: #1a1a1a;
    letter-spacing: 1px;
    margin-bottom: 32px;
}

.contact-item {
    margin-bottom: 28px;
}

.contact-item-label {
    font-size: 10px;
    font-weight: 600;
    color: #bbb;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 6px;
}

.contact-item-value {
    font-size: 15px;
    color: #333;
}

.contact-item a.contact-item-value {
    color: #1a1a1a;
    font-weight: 500;
}

.contact-item a.contact-item-value:hover {
    text-decoration: underline;
}

.contact-note {
    background: #f8f8f8;
    padding: 24px;
    margin-top: 32px;
}

.contact-note-title {
    font-size: 12px;
    font-weight: 600;
    color: #1a1a1a;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.contact-note-list {
    list-style: none;
    padding: 0;
}

.contact-note-list li {
    font-size: 12px;
    color: #999;
    padding: 4px 0 4px 16px;
    position: relative;
}

.contact-note-list li::before {
    content: '—';
    position: absolute;
    left: 0;
    color: #ccc;
}

.contact-form-placeholder {
    border: 1px solid #eee;
    padding: 56px 40px;
    text-align: center;
}

.contact-form-icon {
    font-size: 36px;
    display: block;
    margin-bottom: 16px;
}

.contact-form-text {
    font-size: 13px;
    color: #999;
    margin-bottom: 24px;
    line-height: 1.9;
}

/* --- Access Section --- */
.section-access {
    background: #f8f8f8;
}

.access-block {
    text-align: center;
    padding: 40px 0;
}

.access-icon {
    font-size: 32px;
    display: block;
    margin-bottom: 12px;
}

.access-address {
    font-size: 14px;
    color: #555;
    margin-bottom: 20px;
}

/* --- Footer --- */
.footer {
    background: var(--ink);
    padding: var(--sp-6) 0 0;
}

.footer-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 40px 60px;
    padding-bottom: var(--sp-5);
    border-bottom: 1px solid var(--line-dark);
}

.footer-grid > div:first-child {
    flex: 2 1 300px;
}

.footer-grid > .footer-links {
    flex: 1 1 160px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-brand-img {
    height: 28px;
    width: auto;
    filter: brightness(0) invert(0.85) sepia(0.3) hue-rotate(180deg) saturate(3);
}

.footer-brand-text-name {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: rgba(255,255,255,0.75);
    letter-spacing: 0.5px;
}

.footer-brand-text-sub {
    display: block;
    font-size: 8px;
    color: rgba(255,255,255,0.3);
    letter-spacing: 2px;
    text-transform: uppercase;
    font-family: var(--font-en);
}

.footer-desc {
    font-size: 11px;
    color: rgba(255,255,255,0.3);
    line-height: 1.9;
    margin-top: 20px;
    max-width: 280px;
}

.footer-section-title {
    font-size: 10px;
    font-weight: 600;
    color: rgba(255,255,255,0.35);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 20px;
    font-family: var(--font-en);
}

.footer-links a,
.footer-info p {
    display: block;
    font-size: 12px;
    color: rgba(255,255,255,0.45);
    padding: 5px 0;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: #fff;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 10px;
    color: rgba(255,255,255,0.2);
    letter-spacing: 1px;
    font-family: var(--font-en);
}

/* --- 404 --- */
.page-404 {
    padding: 160px 0;
    text-align: center;
}
.error-code {
    font-size: 80px;
    font-weight: 200;
    color: #1a1a1a;
    margin-bottom: 12px;
}
.error-title {
    font-size: 20px;
    font-weight: 400;
    color: #333;
    margin-bottom: 16px;
}
.error-desc {
    font-size: 13px;
    color: #999;
    margin-bottom: 36px;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .message-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav {
        display: none;
        position: absolute;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--bg);
        flex-direction: column;
        padding: 16px;
        border-bottom: 1px solid var(--line);
        box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    }

    .nav.open { display: flex; }

    .nav-link {
        width: 100%;
        padding: 14px 16px;
    }

    .nav-link.contact-link {
        margin-left: 0;
        text-align: center;
    }

    .hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .hamburger.active span:nth-child(2) { opacity: 0; }
    .hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

    .values-grid {
        grid-template-columns: 1fr;
    }

    .business-grid {
        grid-template-columns: 1fr;
    }

    .numbers-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .number-item:nth-child(2)::after { display: none; }

    .hero-actions { flex-direction: column; }

    .section { padding: 64px 0; }

    .container { padding: 0 20px; }

    .footer-grid {
        flex-direction: column;
        gap: 32px;
    }
}


/* ===== Legal pages (privacy / terms) ===== */
.container-narrow { max-width: 760px; }
.legal-block { line-height: 1.9; color: #333; }
.legal-updated { color: #888; font-size: 14px; margin-bottom: 24px; }
.legal-lead { font-size: 15px; margin-bottom: 24px; }
.legal-h2 { font-size: 18px; font-weight: 600; color: #111; margin: 36px 0 10px; padding-bottom: 6px; border-bottom: 2px solid #eee; }
.legal-block ul { margin: 8px 0 16px; padding-left: 22px; }
.legal-block li { margin: 6px 0; font-size: 15px; }
.contact-box { background: #f8f9fa; border: 1px solid #e5e5e5; padding: 16px 20px; border-radius: 6px; margin-top: 12px; font-size: 14px; line-height: 1.8; }

/* =====================================================================
   ===== NEW: Premium Redesign Additions (Global Business / Photo / CTA)
   ===================================================================== */

/* --- GLOBAL BUSINESS: 主打务实的业务展示区（深色） --- */
.section-global {
    background: var(--navy);
    color: #fff;
    position: relative;
    overflow: hidden;
}

.section-global::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 85% 10%, rgba(74,158,255,0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 10% 90%, rgba(74,158,255,0.05) 0%, transparent 50%);
    pointer-events: none;
}

.section-global .container {
    position: relative;
    z-index: 1;
}

.section-global .section-label {
    color: var(--accent);
}

.section-global .section-title {
    color: #fff;
}

.section-global-desc {
    font-size: 15px;
    color: rgba(255,255,255,0.55);
    line-height: 2.2;
    max-width: 640px;
    margin-bottom: var(--sp-5);
}

.global-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--line-dark);
    border: 1px solid var(--line-dark);
}

.global-card {
    padding: var(--sp-5) var(--sp-4);
    background: rgba(8,11,18,0.4);
    -webkit-backdrop-filter: blur(4px);
    backdrop-filter: blur(4px);
    position: relative;
    transition: background 0.3s ease;
}

.global-card:hover {
    background: rgba(8,11,18,0.75);
}

.global-card-num {
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 3px;
    margin-bottom: var(--sp-3);
    display: block;
}

.global-card-title {
    font-size: 16px;
    font-weight: 500;
    color: #fff;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
    font-family: var(--font-en);
}

.global-card-title.jp {
    font-family: var(--font-jp);
}

.global-card-desc {
    font-size: 13px;
    color: rgba(255,255,255,0.6);
    line-height: 2;
}

/* --- PHOTO SHOWCASE: 高质量图片区（深色 克制） --- */
.section-photo {
    background: #fff;
}

.photo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.photo-card {
    position: relative;
    overflow: hidden;
    border-radius: 2px;
    min-height: 420px;
    display: flex;
    align-items: flex-end;
    background: var(--navy);
}

.photo-card img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease, opacity 0.6s ease;
    opacity: 0.75;
}

.photo-card:hover img {
    transform: scale(1.04);
    opacity: 1;
}

.photo-card-caption {
    position: relative;
    z-index: 2;
    padding: var(--sp-4);
    width: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
}

.photo-card-caption-en {
    font-family: var(--font-en);
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 6px;
    display: block;
}

.photo-card-caption-jp {
    font-size: 13px;
    color: #fff;
    letter-spacing: 0.5px;
}

/* 大图(跨两列) */
.photo-card.large {
    grid-column: span 2;
    min-height: 520px;
}

/* --- CTA Contact (金色/实心 CTA 区) --- */
.section-contact-cta {
    background: var(--ink);
    color: #fff;
    text-align: center;
    padding: var(--sp-8) 0;
    position: relative;
    overflow: hidden;
}

.section-contact-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 120%, rgba(74,158,255,0.18) 0%, transparent 60%);
    pointer-events: none;
}

.section-contact-cta .container { position: relative; z-index: 1; }

.contact-cta-label {
    font-family: var(--font-en);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 6px;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: var(--sp-3);
    display: block;
}

.contact-cta-title {
    font-size: clamp(24px, 4vw, 38px);
    font-weight: 300;
    color: #fff;
    letter-spacing: 2px;
    margin-bottom: 16px;
    line-height: 1.5;
}

.contact-cta-sub {
    font-size: 14px;
    color: rgba(255,255,255,0.5);
    margin-bottom: var(--sp-5);
    letter-spacing: 0.5px;
}

/* --- Fade-in reveal animation (轻微，克制) --- */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive additions --- */
@media (max-width: 900px) {
    .global-grid {
        grid-template-columns: 1fr;
    }
    .photo-grid {
        grid-template-columns: 1fr;
    }
    .photo-card,
    .photo-card.large {
        grid-column: span 1;
        min-height: 320px;
    }
    .section-global { padding: var(--sp-7) 0; }
}