/* =========================================
           Variables
        ========================================= */
        :root {
            --primary-color: #437199;
            --text-main: #1a1a1a;
            --text-light: #404040;
            --bg-body: #ffffff;
            --font-serif: 'Noto Serif JP', serif;
            --font-sans: 'Noto Sans JP', sans-serif;
            --font-en: 'Playfair Display', serif;
        }

        /* =========================================
           Base Reset
        ========================================= */
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-sans);
            color: var(--text-main);
            background-color: var(--bg-body);
            line-height: 2.2;
            letter-spacing: 0.1em;
            -webkit-font-smoothing: antialiased;
        }
        a { color: inherit; text-decoration: none; transition: all 0.4s ease; }
        a:hover { opacity: 0.5; }
        img { max-width: 100%; height: auto; vertical-align: bottom; }
        ul { list-style: none; }
        
        .container { max-width: 1000px; margin: 0 auto; padding: 0 5%; }
        .pc-only { display: inline; }

        /* =========================================
           Typography & Common
        ========================================= */
        .en-title {
            font-family: var(--font-en);
            font-size: clamp(2rem, 4vw, 3rem);
            font-style: italic;
            color: #dddddd;
            letter-spacing: 0.05em;
            display: block;
            margin-bottom: -15px;
            position: relative;
            z-index: 0;
        }

        .sec-title { margin-bottom: 80px; position: relative; }
        .sec-title h2 { font-family: var(--font-serif); font-size: clamp(1.4rem, 3vw, 1.8rem); font-weight: 400; letter-spacing: 0.15em; }
        
        .deco-line { width: 1px; height: 60px; background-color: var(--primary-color); margin: 0 auto 40px; }

        .fade-up { opacity: 0; transform: translateY(40px); transition: opacity 1.5s cubic-bezier(0.2, 0.8, 0.2, 1), transform 1.5s cubic-bezier(0.2, 0.8, 0.2, 1); }
        .fade-up.is-visible { opacity: 1; transform: translateY(0); }
        
        .img-reveal { position: relative; overflow: hidden; }
        .img-reveal::after {
            content: ''; position: absolute; top: 0; right: 0; bottom: 0; left: 0;
            background: #fff; transition: transform 1.5s cubic-bezier(0.77, 0, 0.175, 1); transform-origin: right;
        }
        .img-reveal.is-visible::after { transform: scaleX(0); }

        /* =========================================
           Menu Flip Animation (3D) - 英語基準に修正
        ========================================= */
        .flip-inner {
            position: relative;
            display: inline-block; /* 英語の幅に合わせる */
            transform-style: preserve-3d;
            transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
            text-align: center;
        }
        .flip-front {
            display: block; /* 闍ｱ隱槭ユ繧ｭ繧ｹ繝医′蝨溷床縺ｫ縺ｪ繧・*/
            backface-visibility: hidden;
            transform: translateZ(10px);
        }
        .flip-back {
            position: absolute; /* 譌･譛ｬ隱槭・豬ｮ縺九○繧・*/
            top: 0;
            left: 50%;
            transform: translateX(-50%) rotateX(90deg) translateZ(10px);
            display: block;
            white-space: nowrap; /* 闍ｱ隱槭ｈ繧企聞縺上※繧よ釜繧願ｿ斐＆縺ｪ縺・*/
            backface-visibility: hidden;
            color: #ffffff;
            font-weight: 500;
            text-shadow: 0 0 10px rgba(255, 255, 255, 0.8), 0 0 20px rgba(255, 255, 255, 0.4);
        }
        a:hover .flip-inner {
            transform: rotateX(-90deg);
        }

        header.scrolled .flip-back {
            color: var(--text-main);
            text-shadow: none;
        }

        /* =========================================
           Header
        ========================================= */
        header {
            position: fixed;
            width: 100%;
            top: 0; left: 0;
            padding: 30px 4%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            z-index: 100;
            isolation: isolate;
            transition: all 0.5s ease;
        }
        header::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            left: 0;
            height: 132px;
            background: linear-gradient(180deg, rgba(14, 22, 31, 0.42) 0%, rgba(14, 22, 31, 0.24) 46%, rgba(14, 22, 31, 0) 100%);
            z-index: -1;
            pointer-events: none;
            transition: opacity 0.35s ease;
        }

        header.scrolled {
            padding: 15px 4%;
            background-color: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 20px rgba(0,0,0,0.06);
        }
        header.scrolled::before {
            opacity: 0;
        }
        
        .logo img { height: 35px; transition: all 0.4s ease; }
        header:not(.scrolled) .logo img {
            filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
        }
        .logo .logo-w { display: block; content: url('../img/logoW.png?v=1.1'); }
        .logo .logo-b { display: none; content: url('../img/logoB.png?v=1.1'); }
        header.scrolled .logo img { height: 30px; }
        header.scrolled .logo .logo-w { display: none; }
        header.scrolled .logo .logo-b { display: block; }
        
        nav ul { display: flex; gap: 32px; } /* 日本語が広がっても大丈夫なように間隔を確保 */
        
        nav a { 
            font-size: 0.8rem; 
            letter-spacing: 0.15em; 
            font-weight: 400; 
            color: #ffffff;
            position: relative; 
            display: inline-block;
            perspective: 800px;
        }
        header:not(.scrolled) nav a {
            text-shadow: 0 2px 8px rgba(0, 0, 0, 0.24);
        }
        header.scrolled nav a {
            color: var(--text-main);
        }

        nav a::after {
            content: ''; position: absolute; bottom: -5px; left: 50%;
            width: 0; height: 1px; background: var(--primary-color);
            transition: width 0.3s ease;
            transform: translateX(-50%);
        }
        nav a:hover::after { width: var(--hover-underline-width, 100%); }
        nav a:hover { opacity: 1; }

        /* =========================================
           Hamburger Menu
        ========================================= */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 6px;
            width: 44px;
            height: 44px;
            cursor: pointer;
            z-index: 200;
            background: #ffffff;
            border: 1px solid var(--primary-color);
            border-radius: 12px;
            box-shadow: var(--floating-action-shadow);
            padding: 0;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--primary-color);
            border-radius: 999px;
            box-shadow: none;
            transition: all 0.4s ease;
            transform-origin: center;
        }
        header.scrolled .hamburger {
            background: var(--floating-action-bg);
            border: var(--floating-action-border);
            box-shadow: var(--floating-action-shadow);
        }
        header.scrolled .hamburger span { background: #ffffff; box-shadow: none; }
        .hamburger.is-open span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
        .hamburger.is-open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
        .hamburger.is-open span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

        /* Mobile Menu Overlay */
        .mobile-menu {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(255,255,255,0.98);
            z-index: 150;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 50px;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.5s ease;
        }
        .mobile-menu.is-open {
            opacity: 1;
            pointer-events: all;
        }
        .mobile-menu ul {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 35px;
            width: 90%;
        }
        .mobile-menu a {
            font-family: var(--font-serif);
            font-size: clamp(1.1rem, 4vw, 1.4rem);
            letter-spacing: 0.15em;
            color: var(--text-main);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 5px;
            text-align: center;
            line-height: 1.5;
        }
        .mobile-menu a span.en {
            font-family: var(--font-en);
            font-size: 0.75rem;
            color: var(--text-light);
            font-style: italic;
            letter-spacing: 0.1em;
        }
        .mobile-menu a:hover { opacity: 0.5; }
        .mobile-menu-close {
            position: absolute;
            top: 25px;
            right: 5%;
            width: 36px;
            height: 36px;
            cursor: pointer;
            background: none;
            border: none;
            display: flex;
            flex-direction: column;
            justify-content: center;
            gap: 7px;
            padding: 4px;
        }
        .mobile-menu-close span {
            display: block;
            width: 100%;
            height: 1px;
            background: var(--text-main);
        }
        .mobile-menu-close span:nth-child(1) { transform: translateY(4px) rotate(45deg); }
        .mobile-menu-close span:nth-child(2) { transform: translateY(-4px) rotate(-45deg); }

        body {
            --hero-image-url: url('../img/hero.webp');
            --hero-radial-layer: radial-gradient(circle at 78% 18%, rgba(146, 180, 214, 0.16) 0%, rgba(146, 180, 214, 0) 30%);
            --hero-base-layer: linear-gradient(135deg, #2e4a64 0%, #437199 48%, #648caf 100%);
            --hero-blur-position: 54% 36%;
            --hero-blur-filter: blur(40px) saturate(0.72) brightness(0.78);
            --hero-blur-opacity: 0.16;
            --hero-photo-size: cover;
            --hero-photo-focus-x: 54%;
            --hero-photo-overlay: linear-gradient(180deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0) 26%, rgba(0, 0, 0, 0.12) 100%);
            --hero-photo-sheen: linear-gradient(90deg, rgba(0, 0, 0, 0.08) 0%, rgba(0, 0, 0, 0) 18%, rgba(255,255,255,0.03) 100%);
            --hero-overlay-desktop: linear-gradient(90deg, rgba(17, 28, 39, 0.7) 0%, rgba(17, 28, 39, 0.54) 28%, rgba(17, 28, 39, 0.18) 52%, rgba(17, 28, 39, 0.12) 100%), linear-gradient(180deg, rgba(15, 25, 35, 0.22) 0%, rgba(15, 25, 35, 0.02) 28%, rgba(15, 25, 35, 0.18) 100%);
            --hero-overlay-tablet: linear-gradient(180deg, rgba(19, 31, 43, 0.46) 0%, rgba(19, 31, 43, 0.58) 46%, rgba(19, 31, 43, 0.72) 100%), linear-gradient(90deg, rgba(19, 31, 43, 0.5) 0%, rgba(19, 31, 43, 0.14) 54%, rgba(19, 31, 43, 0.32) 100%);
            --hero-overlay-mobile: linear-gradient(180deg, rgba(19, 31, 43, 0.52) 0%, rgba(19, 31, 43, 0.66) 46%, rgba(19, 31, 43, 0.8) 100%), linear-gradient(90deg, rgba(19, 31, 43, 0.42) 0%, rgba(19, 31, 43, 0.08) 56%, rgba(19, 31, 43, 0.22) 100%);
        }

        /* =========================================
           Hero
        ========================================= */
        .hero {
            --hero-photo-pan-start: 28%;
            --hero-photo-pan-end: 42%;
            height: 100vh;
            min-height: 600px;
            position: relative;
            display: flex;
            align-items: center;
            overflow: hidden;
            background:
                var(--hero-radial-layer),
                var(--hero-base-layer);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: -4%;
            background-image: var(--hero-image-url);
            background-size: cover;
            background-position: var(--hero-blur-position);
            filter: var(--hero-blur-filter);
            transform: scale(1.08);
            opacity: var(--hero-blur-opacity);
            z-index: 0;
        }
        .hero-img {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            left: 0;
            width: 100%;
            background-image: var(--hero-image-url);
            background-size: var(--hero-photo-size);
            background-position: var(--hero-photo-focus-x) var(--hero-photo-pan-start);
            transition: opacity 0.6s ease;
            overflow: hidden;
            z-index: 2;
            will-change: background-position;
            animation: heroPhotoPan 18s ease-out forwards paused;
        }
        .hero-img::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--hero-photo-overlay);
        }
        .hero-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--hero-photo-sheen);
        }
        .hero.is-loaded .hero-img { animation-play-state: running; }
        
        .hero::after {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--hero-overlay-desktop);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 3;
            width: min(46%, 640px);
            padding-left: 7%;
            padding-right: 4%;
            color: #fff;
            text-shadow: 0 14px 30px rgba(0,0,0,0.42);
            isolation: isolate;
        }
        .hero-content::before {
            content: '';
            position: absolute;
            inset: -14% 18% -18% -10%;
            background: radial-gradient(circle at 22% 42%, rgba(8, 14, 22, 0.52) 0%, rgba(8, 14, 22, 0.34) 34%, rgba(8, 14, 22, 0.1) 58%, rgba(8, 14, 22, 0) 78%);
            filter: blur(16px);
            z-index: -1;
            pointer-events: none;
        }
        .hero-content h2 { font-family: var(--font-serif); font-size: clamp(2.05rem, 5.4vw, 4.15rem); line-height: 1.42; font-weight: 300; letter-spacing: 0.08em; margin-bottom: 22px; white-space: nowrap; }
        .hero-content h2:last-of-type { margin-bottom: 34px; }
        .hero-content p { font-family: var(--font-serif); font-size: clamp(0.85rem, 2vw, 1.1rem); letter-spacing: 0.2em; font-weight: 300; text-shadow: 0 10px 24px rgba(0,0,0,0.48); }

        /* =========================================
           Hero Contact Button
        ========================================= */
        .hero-contact-btn {
            position: fixed;
            right: 6%;
            bottom: 8%;
            width: 150px;
            height: 150px;
            z-index: 120;
            display: flex;
            justify-content: center;
            align-items: center;
            color: #fff;
            opacity: 0;
            transform: translateY(20px);
            animation: heroBtnFade 1.5s 1s forwards cubic-bezier(0.2, 0.8, 0.2, 1);
        }
        .hero-contact-btn:hover {
            opacity: 1;
            color: var(--primary-color);
        }
        .hero-contact-btn:hover .inner-icon {
            background: #fff;
            color: var(--primary-color);
            border-color: var(--primary-color);
            transform: scale(1.08);
            box-shadow: 0 10px 25px rgba(0,0,0,0.3);
        }
        .circle-text {
            position: absolute;
            width: 100%;
            height: 100%;
            animation: textRotate 20s linear infinite;
            filter: drop-shadow(0px 2px 4px rgba(0,0,0,0.5));
            transition: opacity 0.35s ease;
        }
        .hero-contact-btn.is-outside-hero .circle-text {
            opacity: 0;
            pointer-events: none;
        }
        .circle-text text {
            font-family: var(--font-en);
            font-size: 11.5px;
            font-weight: 500;
            letter-spacing: 0.16em;
            fill: currentColor;
            text-transform: uppercase;
        }
        @keyframes textRotate {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        @keyframes heroPhotoPan {
            0% { background-position: center var(--hero-photo-pan-start); }
            100% { background-position: center var(--hero-photo-pan-end); }
        }
        @keyframes heroBtnFade {
            to { opacity: 1; transform: translateY(0); }
        }
        .inner-icon {
            width: 76px;
            height: 76px;
            background: var(--primary-color);
            border: 1px solid var(--primary-color);
            border-radius: 50%;
            box-shadow: 0 8px 20px rgba(0,0,0,0.25);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            transition: all 0.4s ease;
            color: #fff;
        }
        .inner-text {
            font-family: var(--font-sans);
            font-size: 9.5px;
            font-weight: 500;
            letter-spacing: 0.05em;
            line-height: 1;
            margin-top: 4px;
            white-space: nowrap;
        }

        /* =========================================
           Core (私たちの信念)
        ========================================= */
        .core {
            position: relative;
            isolation: isolate;
            padding: 0 0 clamp(80px, 10vw, 140px);
            background: #fff;
        }
        .core::before {
            content: '';
            position: absolute;
            top: clamp(150px, 16vw, 210px);
            bottom: 0;
            left: 50%;
            width: 100vw;
            transform: translateX(-50%);
            background:
                linear-gradient(rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.82)),
                url('../img/core.webp') center center / cover no-repeat;
            pointer-events: none;
            z-index: 0;
        }
        .core > * {
            position: relative;
            z-index: 1;
        }
        .core-wrapper {
            max-width: 820px;
            margin: 0 auto;
            text-align: center;
        }
        .core .deco-line {
            margin: calc(clamp(150px, 16vw, 210px) / 2 - 30px) auto;
        }
        .core .sec-title { display: flex; flex-direction: column; align-items: center; margin-bottom: 50px; }
        .core-catch {
            font-family: var(--font-serif);
            font-size: clamp(1.4rem, 3vw, 2.2rem);
            font-weight: 300;
            letter-spacing: 0.15em;
            line-height: 1.8;
            max-width: 20em;
            margin: 0 auto 40px;
            text-wrap: balance;
            color: var(--text-main);
            text-align: center;
            white-space: normal;
            position: relative;
            left: -1em;
        }
        .core-catch span {
            display: block;
        }
        .line2 {
            padding-left: 5em;
        }

        .line3 {
            padding-left: 10em;
        }
        .core-text {
            max-width: 760px;
            margin: 0 auto;
            text-align: center;
        }
        .core-text p {
            font-size: clamp(0.85rem, 1.5vw, 0.95rem);
            color: var(--text-light);
            line-height: 2.4;
            margin-bottom: 22px;
            text-wrap: pretty;
        }
        .core-text p:last-child { margin-bottom: 0; }

        /* =========================================
           Concept
        ========================================= */
        .concept { padding: clamp(80px, 10vw, 140px) 0 clamp(80px, 15vw, 180px); }
        .concept-inner { display: flex; justify-content: space-between; align-items: flex-start; position: relative; }
        
        .concept-catch {
            writing-mode: vertical-rl;
            text-orientation: mixed;
            font-family: var(--font-serif);
            font-size: clamp(1.6rem, 3.5vw, 3rem);
            line-height: 2;
            letter-spacing: 0.3em;
            color: var(--text-main);
            flex-shrink: 0;
        }

        .concept-img-wrap { width: 55%; position: relative; left: -4%; margin-top: 80px; overflow: visible; }
        .concept-img-wrap img { width: 100%; aspect-ratio: 4/5; object-fit: cover; }
        .concept-img-wrap.img-reveal::after {
            right: -20%;
            bottom: -110px;
        }
        
        .concept-text {
            position: absolute;
            left: 52%;
            right: auto;
            bottom: -80px;
            width: min(clamp(280px, 29vw, 420px), calc(100vw - 72px));
            background: rgba(255, 255, 255, 0.96);
            padding: clamp(28px, 3.4vw, 44px);
            box-shadow: 0 18px 42px rgba(0,0,0,0.035);
        }
        .concept-text p { font-size: clamp(0.85rem, 1.5vw, 0.95rem); color: var(--text-light); margin-bottom: 20px; line-height: 2; }
        .concept-text p:last-child { margin-bottom: 0; }

        /* =========================================
           Service
        ========================================= */
        .service { padding: clamp(80px, 15vw, 180px) 0; background: #fafafa; }
        .service-item { display: flex; align-items: center; justify-content: space-between; margin-bottom: clamp(60px, 10vw, 120px); }
        .service-item:last-child { margin-bottom: 0; }
        .service-item:nth-child(even) { flex-direction: row-reverse; }

        .service-img { display: block; width: 55%; overflow: hidden; }
        a.service-img:hover { opacity: 1; }
        .service-img img { width: 100%; aspect-ratio: 16/10; object-fit: cover; transition: transform 0.8s ease; }
        .service-img:hover img { transform: scale(1.05); }
        
        .service-info { width: 35%; }
        .service-info h3 { font-family: var(--font-serif); font-size: clamp(1.2rem, 2.5vw, 1.6rem); margin-bottom: 25px; letter-spacing: 0.1em; }
        .service-info h3 a { transition: color 0.4s ease; }
        .service-info h3 a:hover { color: var(--primary-color); opacity: 1; }
        .service-info p { font-size: clamp(0.85rem, 1.5vw, 0.9rem); color: var(--text-light); line-height: 2; }
        
        /* Service Detail Link */
        .service-detail-link {
            display: inline-flex;
            align-items: center;
            margin-top: 25px;
            font-family: var(--font-en);
            font-size: 0.85rem;
            letter-spacing: 0.15em;
            color: var(--text-main);
            position: relative;
        }
        .service-detail-link:hover { color: var(--primary-color); opacity: 1; }
        .service-detail-link::after {
            content: '';
            display: inline-block;
            width: 40px;
            height: 1px;
            background-color: currentColor;
            margin-left: 15px;
            transition: width 0.4s ease;
        }
        .service-detail-link:hover::after { width: 60px; }

        /* =========================================
           Rental Highlight
        ========================================= */
        .rental-highlight {
            padding: 0 0 clamp(80px, 10vw, 140px);
            background: linear-gradient(180deg, #fafafa 0%, #ffffff 100%);
        }
        .rental-highlight-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 48px;
            padding: clamp(40px, 6vw, 72px);
            border: 1px solid rgba(67, 113, 153, 0.14);
            background: rgba(255, 255, 255, 0.94);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.04);
        }
        .rental-highlight-copy {
            max-width: 620px;
        }
        .rental-highlight-copy .en-title {
            margin-bottom: -10px;
        }
        .rental-highlight-copy h2 {
            font-family: var(--font-serif);
            font-size: clamp(1.4rem, 3vw, 1.9rem);
            font-weight: 400;
            letter-spacing: 0.14em;
            margin-bottom: 22px;
        }
        .rental-highlight-copy p {
            font-size: clamp(0.86rem, 1.45vw, 0.95rem);
            color: var(--text-light);
            line-height: 2.1;
        }
        .rental-highlight-link {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 240px;
            padding: 20px 34px;
            border: 1px solid var(--primary-color);
            color: var(--primary-color);
            font-family: var(--font-serif);
            letter-spacing: 0.12em;
            background: #fff;
        }
        .rental-highlight-link:hover {
            background: var(--primary-color);
            color: #fff;
            opacity: 1;
        }

        /* =========================================
           Contact CTA
        ========================================= */
        .cta {
            position: relative; padding: clamp(80px, 12vw, 160px) 0; text-align: center; color: #fff;
            background-image: url('../img/contact.webp');
            background-size: cover; background-position: center;
        }
        @media (hover: hover) {
            .cta { background-attachment: fixed; }
        }
        .cta::after { content: ''; position: absolute; inset: 0; background: rgba(0,0,0,0.58); }
        .cta .container { position: relative; z-index: 1; }
        
        .cta h2 { font-family: var(--font-serif); font-size: clamp(1.4rem, 3.5vw, 2rem); font-weight: 300; letter-spacing: 0.1em; margin-bottom: 25px; }
        .cta p { margin-bottom: 50px; font-weight: 300; letter-spacing: 0.1em; font-size: clamp(0.85rem, 1.5vw, 1rem); }
        
        .cta-btn {
            display: inline-block; padding: 22px min(80px, 8vw); background-color: var(--primary-color); color: #fff;
            border: 1px solid var(--primary-color);
            font-family: var(--font-serif); letter-spacing: 0.15em; transition: all 0.4s ease; font-size: clamp(0.85rem, 1.5vw, 1rem);
        }
        .cta-btn:hover { background-color: #fff; color: var(--primary-color); opacity: 1; }

        /* =========================================
           Footer
        ========================================= */
        footer { background-color: #fff; padding: clamp(60px, 8vw, 100px) 0 40px; border-top: 1px solid #f0f0f0; }
        .footer-inner { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 60px; gap: 40px; }
        .footer-info img { height: 30px; margin-bottom: 24px; }
        .footer-info p { font-size: 0.82rem; color: var(--text-light); }
        .footer-nav ul { display: flex; gap: 40px; flex-wrap: wrap; justify-content: flex-end; }
        .footer-nav a { font-size: 0.78rem; letter-spacing: 0.1em; color: var(--text-light); display: inline-block; perspective: 800px; }
        .footer-nav .flip-back { color: var(--text-light); text-shadow: none; }
        .footer-nav a:hover { opacity: 1; }
        .copyright { text-align: center; font-size: 0.72rem; color: #ccc; letter-spacing: 0.1em; padding-top: 40px; border-top: 1px solid #f0f0f0; }

        /* =========================================
           Responsive — Tablet (max 900px)
        ========================================= */
        @media (max-width: 900px) {
            body {
                --hero-image-url: url('../img/hero_mo.webp');
            }

            header { padding: 20px 5%; }
            header::before { height: 108px; }
            nav { display: none; }
            .hamburger { display: flex; }
            .mobile-menu { display: flex; }
            
            .pc-only { display: none; }

            .hero {
                --hero-photo-pan-start: bottom;
                --hero-photo-pan-end: bottom;
                --hero-photo-focus-x: 50%;
                height: 100dvh;
                min-height: 720px;
            }
            .hero::before {
                inset: -2%;
                background-position: 58% 28%;
                filter: blur(20px) saturate(0.88) brightness(0.84);
                opacity: 0.12;
            }
            .hero::after {
                background: var(--hero-overlay-tablet);
            }
            .hero-img {
                background-size: var(--hero-photo-size);
                background-position: var(--hero-photo-focus-x) var(--hero-photo-pan-start);
            }
            .hero-img::before {
                background: var(--hero-photo-overlay);
            }
            .hero-content {
                width: min(86%, 460px);
                padding-left: 6%;
                padding-right: 6%;
                top: -7dvh;
            }
            .hero-content::before {
                inset: -12% 10% -14% -8%;
                filter: blur(14px);
            }

            .hero-contact-btn { width: 68px; height: 68px; right: 14px; bottom: calc(env(safe-area-inset-bottom, 0px) + 96px); }
            .hero-contact-btn .circle-text { display: none; }
            .inner-icon { width: 68px; height: 68px; }
            .inner-text { font-size: 8.5px; margin-top: 3px; }

            .core::before { top: 150px; }
            .core .deco-line { margin: 45px auto; }
            .core-wrapper { padding: 0 5%; }
            .core-catch {
                left: 0;
                max-width: none;
                margin-bottom: 36px;
            }
            .line2,
            .line3 {
                padding-left: 0;
            }
            .core-text {
                width: calc(100% - 56px);
                max-width: 34rem;
                margin: 0 auto;
                padding: 0;
            }
            .core-text p { margin-bottom: 18px; }
            .concept { padding: 80px 0 140px; }
            .concept-inner { flex-direction: column; align-items: center; }
            .concept-catch { writing-mode: horizontal-tb; font-size: clamp(1.6rem, 5vw, 2.2rem); text-align: center; letter-spacing: 0.15em; margin-bottom: 40px; }
            .concept-img-wrap { width: 90%; left: 0; margin-top: 0; }
            .concept-img-wrap.img-reveal::after { right: 0; bottom: 0; }
            .concept-text { position: relative; left: auto; right: auto; bottom: 0; width: 90%; margin: -40px auto 0; padding: 30px; }

            .service-item, .service-item:nth-child(even) { flex-direction: column; gap: 30px; margin-bottom: 70px; }
            .service-img, .service-info { width: 100%; }
            .service-info { padding: 0 2%; }
            .rental-highlight-inner { flex-direction: column; align-items: flex-start; gap: 28px; }
            .rental-highlight-link { min-width: 0; width: 100%; }

            .footer-inner { flex-direction: column; align-items: flex-start; gap: 30px; }
            .footer-nav ul { justify-content: flex-start; gap: 20px; }
        }

        /* =========================================
           Responsive — Mobile (max 480px)
        ========================================= */
        @media (max-width: 480px) {
            header::before { height: 92px; }
            .hero {
                --hero-photo-pan-start: bottom;
                --hero-photo-pan-end: bottom;
                --hero-photo-focus-x: 50%;
                height: 100dvh;
                min-height: 100dvh;
            }
            .hero::before {
                background-position: 60% 24%;
                opacity: 0.08;
            }
            .hero::after {
                background: var(--hero-overlay-mobile);
            }
            .hero-img {
                background-size: var(--hero-photo-size);
                background-position: var(--hero-photo-focus-x) var(--hero-photo-pan-start);
            }
            .hero-content {
                width: 88%;
                padding-left: 6%;
                padding-right: 6%;
                top: -8dvh;
            }
            .hero-content::before {
                inset: -10% 6% -12% -6%;
                filter: blur(12px);
            }
            .hero-contact-btn { width: 68px; height: 68px; right: 12px; bottom: calc(env(safe-area-inset-bottom, 0px) + 96px); }
            .inner-icon { width: 68px; height: 68px; }
            .inner-icon svg { width: 22px; height: 22px; }
            .inner-text { font-size: 8.5px; margin-top: 3px; }

            .core::before { top: 132px; }
            .core .deco-line { margin: 36px auto; }
            .core-wrapper { padding: 0 6%; }
            .core-catch { font-size: clamp(1.2rem, 5vw, 1.5rem); line-height: 1.9; letter-spacing: 0.12em; margin-bottom: 32px; }
            .core-text {
                width: calc(100% - 40px);
                max-width: 30rem;
                margin: 0 auto;
                padding: 0;
            }
            .core-text p { font-size: 0.92rem; line-height: 2.3; }
            .concept { padding: 60px 0 120px; }
            .concept-text { width: 100%; margin: -30px auto 0; padding: 25px 20px; }
            .service { padding: 80px 0; }
            .sec-title { margin-bottom: 50px; }
        }