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

        :root {
            --bg: #fafafa;
            --fg: #1a1a1a;
            --fg-light: #555;
            --fg-muted: #999;
            --line: #e8e8e8;
            --accent: #c8a96e;
            --accent-dark: #b08d50;
            --white: #fff;
            --transition: all .4s cubic-bezier(.25, .46, .45, .94);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px
        }

        body {
            font-family: 'Hiragino Sans GB', 'Noto Sans SC', 'Microsoft YaHei', 'PingFang SC', sans-serif;
            background: var(--bg);
            color: var(--fg);
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

        section {
            position: relative
        }

        /* ========== Scroll Reveal ========== */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: opacity 1s cubic-bezier(.25, .46, .45, .94), transform 1s cubic-bezier(.25, .46, .45, .94)
        }

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

        /* ========== Navigation ========== */
        .nav {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.5rem 3rem;
            transition: var(--transition);
            background: transparent;
        }

        .nav.scrolled {
            background: rgba(250, 250, 250, .92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            padding: 1rem 3rem;
            border-bottom: 1px solid var(--line);
        }

        .nav-logo {
            font-size: 1.4rem;
            font-weight: 700;
            letter-spacing: .15em;
            color: var(--fg);
            transition: var(--transition);
        }

        .nav.scrolled .nav-logo {
            color: var(--fg)
        }

        .nav-logo span {
            color: var(--accent)
        }

        .nav-menu {
            display: flex;
            gap: 2.5rem;
            align-items: center
        }

        .nav-menu a {
            font-size: .875rem;
            letter-spacing: .08em;
            color: var(--fg);
            position: relative;
            padding: .3rem 0;
            transition: var(--transition);
        }

        .nav-menu a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 1px;
            background: var(--accent);
            transition: width .3s ease;
        }

        .nav-menu a:hover::after {
            width: 100%
        }

        .nav-menu a:hover {
            color: var(--accent)
        }

        .nav-lang {
            display: flex;
            gap: .6rem;
            align-items: center;
            font-size: .75rem;
            color: var(--fg-muted);
            border-left: 1px solid var(--line);
            padding-left: 1.5rem;
            margin-left: 1rem;
        }

        .nav-lang a {
            cursor: pointer;
            transition: var(--transition)
        }

        .nav-lang a.active {
            color: var(--accent);
            font-weight: 600
        }

        .nav-lang a:hover {
            color: var(--accent)
        }

        .nav-burger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: .5rem
        }

        .nav-burger span {
            width: 24px;
            height: 2px;
            background: var(--fg);
            transition: var(--transition)
        }

        .nav-burger.open span:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px)
        }

        .nav-burger.open span:nth-child(2) {
            opacity: 0
        }

        .nav-burger.open span:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px)
        }

        /* ========== Hero ========== */
        .hero {
            height: 100vh;
            min-height: 640px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
            background: linear-gradient(135deg, #1a1a1a 0%, #2a2520 100%);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('https://images.unsplash.com/photo-1497366216548-37526070297c?w=1920&q=80') center/cover no-repeat;
            opacity: .45;
            transform: scale(1.05);
            animation: heroZoom 20s ease-in-out infinite alternate;
        }

        @keyframes heroZoom {
            from {
                transform: scale(1.05)
            }
            to {
                transform: scale(1.15)
            }
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(0, 0, 0, .3) 0%, rgba(0, 0, 0, .15) 50%, rgba(0, 0, 0, .5) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: var(--white);
            padding: 0 2rem;
            max-width: 900px;
        }

        .hero-tagline {
            font-size: .8rem;
            letter-spacing: .4em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 2rem;
            opacity: 0;
            animation: fadeInUp 1s ease .3s forwards;
        }

        .hero-title {
            font-size: clamp(2.5rem, 8vw, 5.5rem);
            font-weight: 800;
            letter-spacing: .05em;
            line-height: 1.15;
            margin-bottom: 1.5rem;
            opacity: 0;
            animation: fadeInUp 1s ease .5s forwards;
        }

        .hero-title-en {
            display: block;
            font-size: .3em;
            font-weight: 400;
            letter-spacing: .3em;
            color: var(--accent);
            margin-top: 1rem;
        }

        .hero-slogan {
            font-size: clamp(1rem, 2vw, 1.25rem);
            font-weight: 300;
            letter-spacing: .1em;
            color: rgba(255, 255, 255, .8);
            max-width: 600px;
            margin: 0 auto 3rem;
            opacity: 0;
            animation: fadeInUp 1s ease .7s forwards;
        }

        .hero-cta {
            display: inline-block;
            padding: 1rem 3rem;
            border: 1px solid rgba(255, 255, 255, .4);
            color: var(--white);
            font-size: .875rem;
            letter-spacing: .15em;
            transition: var(--transition);
            opacity: 0;
            animation: fadeInUp 1s ease .9s forwards;
        }

        .hero-cta:hover {
            background: var(--accent);
            border-color: var(--accent);
            transform: translateY(-3px);
        }

        .hero-scroll {
            position: absolute;
            bottom: 2rem;
            left: 50%;
            transform: translateX(-50%);
            z-index: 2;
            color: rgba(255, 255, 255, .5);
            font-size: .75rem;
            letter-spacing: .2em;
            text-align: center;
            animation: bounce 2s infinite;
        }

        .hero-scroll::after {
            content: '';
            display: block;
            width: 1px;
            height: 40px;
            background: rgba(255, 255, 255, .3);
            margin: .8rem auto 0;
        }

        @keyframes bounce {
            0%, 100% {
                transform: translateX(-50%) translateY(0)
            }
            50% {
                transform: translateX(-50%) translateY(10px)
            }
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px)
            }
            to {
                opacity: 1;
                transform: translateY(0)
            }
        }

        /* ========== Section Common ========== */
        .section {
            padding: 8rem 3rem;
            max-width: 1400px;
            margin: 0 auto
        }

        .section-label {
            font-size: .75rem;
            letter-spacing: .4em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.8rem);
            font-weight: 700;
            letter-spacing: .05em;
            margin-bottom: 1rem;
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--fg-light);
            max-width: 600px;
            margin-bottom: 4rem;
        }

        /* ========== About ========== */
        .about {
            background: var(--white)
        }

        .about-grid {
            display: grid;
            grid-template-columns:1fr 1fr;
            gap: 5rem;
            align-items: center;
        }

        .about-text {
            padding-right: 2rem
        }

        .about-item {
            margin-bottom: 3rem
        }

        .about-item:last-child {
            margin-bottom: 0
        }

        .about-item-title {
            font-size: .75rem;
            letter-spacing: .3em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: .8rem;
        }

        .about-item h3 {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: .8rem;
        }

        .about-item p {
            color: var(--fg-light);
            font-size: .95rem;
            line-height: 1.9;
        }

        .about-image {
            position: relative;
            height: 600px;
            overflow: hidden;
        }

        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 1.5s cubic-bezier(.25, .46, .45, .94);
        }

        .about-image:hover img {
            transform: scale(1.08)
        }

        .about-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, transparent 60%, rgba(200, 169, 110, .1));
            pointer-events: none;
        }

        /* ========== Services ========== */
        .services {
            background: var(--bg)
        }

        .services-header {
            text-align: center;
            margin-bottom: 5rem
        }

        .services-header .section-subtitle {
            margin: 1rem auto 0
        }

        .services-grid {
            display: grid;
            grid-template-columns:repeat(4, 1fr);
            gap: 2rem;
        }

        .service-card {
            background: var(--white);
            overflow: hidden;
            transition: var(--transition);
            border: 1px solid var(--line);
        }

        .service-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, .08);
            border-color: var(--accent);
        }

        .service-card-img {
            height: 240px;
            overflow: hidden;
            position: relative;
        }

        .service-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 1s ease;
        }

        .service-card:hover .service-card-img img {
            transform: scale(1.1)
        }

        .service-card-num {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: rgba(255, 255, 255, .9);
            color: var(--fg);
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: .875rem;
            font-weight: 600;
            border-radius: 50%;
        }

        .service-card-body {
            padding: 2rem 1.5rem
        }

        .service-card-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: .8rem;
        }

        .service-card-body p {
            font-size: .875rem;
            color: var(--fg-light);
            line-height: 1.8;
        }

        .service-card-body .accent-line {
            width: 30px;
            height: 2px;
            background: var(--accent);
            margin-bottom: 1rem;
        }

        /* ========== Client Logos ========== */
        .clients {
            padding: 5rem 3rem;
            background: var(--white);
            text-align: center
        }

        .clients-title {
            font-size: .75rem;
            letter-spacing: .3em;
            text-transform: uppercase;
            color: var(--fg-muted);
            margin-bottom: 3rem;
        }

        .clients-grid {
            display: grid;
            grid-template-columns:repeat(6, 1fr);
            gap: 2rem;
            max-width: 1200px;
            margin: 0 auto;
            align-items: center;
        }

        .client-logo {
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: .5;
            transition: var(--transition);
            filter: grayscale(100%);
        }

        .client-logo:hover {
            opacity: 1;
            filter: grayscale(0)
        }

        .client-logo span {
            font-size: 1rem;
            font-weight: 600;
            letter-spacing: .1em;
            color: var(--fg-light);
        }

        /* ========== Cases ========== */
        .cases {
            background: var(--bg)
        }

        .cases-header {
            text-align: center;
            margin-bottom: 5rem
        }

        .case-item {
            display: grid;
            grid-template-columns:1fr 1fr;
            gap: 4rem;
            align-items: center;
            margin-bottom: 6rem;
        }

        .case-item:last-child {
            margin-bottom: 0
        }

        .case-item:nth-child(even) .case-image {
            order: 2
        }

        .case-item:nth-child(even) .case-text {
            order: 1
        }

        .case-image {
            height: 400px;
            overflow: hidden;
            position: relative
        }

        .case-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 1.2s ease;
        }

        .case-item:hover .case-image img {
            transform: scale(1.06)
        }

        .case-num {
            position: absolute;
            top: 1.5rem;
            left: 1.5rem;
            font-size: 3rem;
            font-weight: 800;
            color: rgba(255, 255, 255, .5);
            line-height: 1;
        }

        .case-text {
            padding: 0 1rem
        }

        .case-label {
            font-size: .75rem;
            letter-spacing: .3em;
            text-transform: uppercase;
            color: var(--accent);
            margin-bottom: 1rem;
        }

        .case-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }

        .case-text p {
            color: var(--fg-light);
            font-size: .95rem;
            line-height: 1.9;
            margin-bottom: 1.5rem;
        }

        .case-tag {
            display: inline-block;
            padding: .3rem 1rem;
            background: rgba(200, 169, 110, .1);
            color: var(--accent);
            font-size: .75rem;
            letter-spacing: .1em;
            border-radius: 2px;
        }

        /* ========== Contact ========== */
        .contact {
            background: var(--white)
        }

        .contact-grid {
            display: grid;
            grid-template-columns:1fr 1fr;
            gap: 5rem;
        }

        .contact-info h2 {
            margin-bottom: 2rem
        }

        .contact-info p {
            color: var(--fg-light);
            margin-bottom: 2rem;
            font-size: .95rem
        }

        .contact-detail {
            margin-bottom: 1.5rem
        }

        .contact-detail-label {
            font-size: .75rem;
            letter-spacing: .2em;
            color: var(--fg-muted);
            text-transform: uppercase;
            margin-bottom: .3rem;
        }

        .contact-detail-value {
            font-size: 1rem;
            color: var(--fg)
        }

        .contact-form {
            display: flex;
            flex-direction: column;
            gap: 1.5rem
        }

        .form-group {
            display: flex;
            flex-direction: column
        }

        .form-group label {
            font-size: .75rem;
            letter-spacing: .1em;
            color: var(--fg-muted);
            margin-bottom: .5rem;
            text-transform: uppercase;
        }

        .form-group select,
        .form-group input,
        .form-group textarea {
            padding: .8rem 1rem;
            border: 1px solid var(--line);
            background: var(--bg);
            font-size: .9rem;
            color: var(--fg);
            transition: var(--transition);
            font-family: inherit;
        }

        .form-group select:focus,
        .form-group input:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: var(--accent);
            background: var(--white);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 120px
        }

        .form-submit {
            padding: 1rem 2rem;
            background: var(--fg);
            color: var(--white);
            border: none;
            font-size: .875rem;
            letter-spacing: .15em;
            cursor: pointer;
            transition: var(--transition);
            text-transform: uppercase;
        }

        .form-submit:hover {
            background: var(--accent);
            transform: translateY(-2px)
        }

        /* ========== Footer ========== */
        .footer {
            background: #1a1a1a;
            color: rgba(255, 255, 255, .6);
            padding: 4rem 3rem 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns:2fr 1fr 1fr 1fr;
            gap: 3rem;
            max-width: 1400px;
            margin: 0 auto 3rem;
        }

        .footer-brand h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--white);
            letter-spacing: .15em;
            margin-bottom: 1rem;
        }

        .footer-brand h3 span {
            color: var(--accent)
        }

        .footer-brand p {
            font-size: .85rem;
            max-width: 300px
        }

        .footer-col h4 {
            font-size: .75rem;
            letter-spacing: .2em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, .4);
            margin-bottom: 1rem;
        }

        .footer-col a {
            display: block;
            font-size: .875rem;
            color: rgba(255, 255, 255, .6);
            margin-bottom: .6rem;
            transition: var(--transition);
        }

        .footer-col a:hover {
            color: var(--accent)
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 2rem;
            text-align: center;
            max-width: 1400px;
            margin: 0 auto;
        }

        .footer-bottom p {
            font-size: .8rem;
            color: rgba(255, 255, 255, .4)
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .services-grid {
                grid-template-columns:repeat(2, 1fr)
            }

            .clients-grid {
                grid-template-columns:repeat(4, 1fr)
            }

            .footer-grid {
                grid-template-columns:1fr 1fr
            }
        }

        @media (max-width: 768px) {
            .nav {
                padding: 1rem 1.5rem
            }

            .nav.scrolled {
                padding: .8rem 1.5rem
            }

            .nav-menu {
                position: fixed;
                top: 0;
                right: -100%;
                width: 80%;
                height: 100vh;
                background: var(--white);
                flex-direction: column;
                justify-content: center;
                gap: 2rem;
                transition: right .4s ease;
                box-shadow: -5px 0 30px rgba(0, 0, 0, .1);
            }

            .nav-menu.open {
                right: 0
            }

            .nav-lang {
                border-left: none;
                padding-left: 0;
                margin-left: 0;
                flex-direction: column;
                gap: .5rem
            }

            .nav-burger {
                display: flex;
                z-index: 1001
            }

            .section {
                padding: 5rem 1.5rem
            }

            .about-grid, .case-item, .contact-grid {
                grid-template-columns:1fr;
                gap: 3rem
            }

            .about-image {
                height: 400px
            }

            .about-text {
                padding-right: 0
            }

            .case-item:nth-child(even) .case-image {
                order: 0
            }

            .case-item:nth-child(even) .case-text {
                order: 0
            }

            .services-grid {
                grid-template-columns:1fr
            }

            .clients-grid {
                grid-template-columns:repeat(3, 1fr)
            }

            .footer-grid {
                grid-template-columns:1fr;
                gap: 2rem
            }

            .footer {
                padding: 3rem 1.5rem 2rem
            }
        }