* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            --black: #0b0b0b;
            --dark-gray: #2d2d2d;
            --mid-gray: #7e7e7e;
            --light-gray: #e5e5e5;
            --white: #ffffff;
            --grid-color: rgba(0,0,0,0.02);
            --nav-height: 80px;
        }

        body {
            font-family: 'Inter', sans-serif;
            background: var(--white);
            color: var(--dark-gray);
            font-weight: 300;
            line-height: 1.3;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        img {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .grid-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: 
                linear-gradient(var(--grid-color) 1px, transparent 1px),
                linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
            background-size: 4rem 4rem;
            pointer-events: none;
            z-index: 0;
        }

        /* --- Navbar Styles --- */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            padding: 2rem 4rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            z-index: 1000;
            
            /* 默认状态：透明背景，白色文字，使用混合模式 */
            background: transparent; 
            color: var(--white);
           /* mix-blend-mode: difference; */
            
            pointer-events: none;
            transition: all 0.3s ease; /* 平滑过渡 */
        }
        
        /* --- Navbar Scrolled State (class="on") --- */
        .navbar.on {
            background: var(--white);
            color: var(--black);
            mix-blend-mode: normal; /* 滚动后取消混合模式，确保文字在白底上清晰 */
            padding-top: 1.5rem;
            padding-bottom: 1.5rem;
            box-shadow: 0 4px 20px rgba(0,0,0,0.03);
        }
         
        .navbar a, .hamburger {
            pointer-events: auto;
        }

        .logo-text {
            font-size: 0.85rem;
            font-weight: 400;
            letter-spacing: 0.15em;
            color: inherit; /* 继承父级颜色 */
            text-decoration: none;
            text-transform: uppercase;
            z-index: 1002;
            transition: color 0.3s ease;
        }
        .logo-text img{
            max-height: 18px;
        }
        .logo-text .logo2{display:none;}
        .navbar.on .logo-text .logo1{display:none;}
        .navbar.on .logo-text .logo2{display:block;}
        .nav-links {
            display: flex;
            gap: 3rem;
        }

        .nav-links a {
            color: inherit; /* 继承父级颜色 */
            text-decoration: none;
            font-weight: 300;
            font-size: 0.85rem;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            transition: opacity 0.2s, color 0.3s ease;
        }

        .nav-links a:hover {
            opacity: 0.6;
        }

        /* Hamburger Menu */
        .hamburger {
            display: none;
            cursor: pointer;
            width: 30px;
            height: 20px;
            position: relative;
            z-index: 1002;
            background: transparent;
            border: none;
        }

        .hamburger span {
            display: block;
            position: absolute;
            height: 2px;
            width: 100%;
            background: currentColor; /* 使用当前字体颜色 */
            opacity: 1;
            left: 0;
            transform: rotate(0deg);
            transition: .25s ease-in-out, background 0.3s ease;
        }

        .hamburger span:nth-child(1) { top: 0px; }
        .hamburger span:nth-child(2) { top: 9px; }
        .hamburger span:nth-child(3) { top: 18px; }

        /* --- Hero Section --- */
        .hero {
            position: relative;
            height: 100vh;
            width: 100%;
            background-color: var(--black);
            color: var(--white);
            display: flex;
            align-items: flex-end;
            padding: 4rem;
            overflow: hidden;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            transform: scale(1.02);
            transition: transform 0.1s ease-out;
        }

        .hero-bg img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.85;
            filter: grayscale(20%) contrast(1.05) brightness(1.05);
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(45deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0) 80%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 1000px;
            padding-bottom: 2rem;
        }

        .hero-content h1 {
            font-size: clamp(3.5rem, 12vw, 9rem);
            font-weight: 300;
            line-height: 0.9;
            letter-spacing: -0.03em;
            text-transform: uppercase;
            margin-bottom: 1rem;
        }

        .hero-content h1 span {
            display: block;
            font-weight: 350;
            color: rgba(255,255,255,0.95);
        }

        .hero-content p {
            font-size: 1.2rem;
            font-weight: 300;
            max-width: 500px;
            margin-top: 2rem;
            opacity: 0.9;
            line-height: 1.5;
        }

        .vertical-line {
            position: fixed;
            right: 4rem;
            top: 0;
            width: 1px;
            height: 100vh;
            background: linear-gradient(to bottom, transparent 0%, var(--mid-gray) 10%, var(--mid-gray) 90%, transparent 100%);
            opacity: 0.2;
            z-index: 5;
            pointer-events: none;
        }

        /* --- Values Section --- */
        .values {
            padding: 8rem 4rem;
            background: var(--white);
            position: relative;
        }

        .values-grid {
            display: flex;
            flex-direction: column;
            gap: 5rem;
            max-width: 1000px;
            margin: 0 auto;
        }

        .value-item {
            display: flex;
            align-items: baseline;
            border-bottom: 1px solid rgba(0,0,0,0.03);
            padding-bottom: 2rem;
            transition: border-color 0.2s;
        }

        .value-item:hover {
            border-bottom-color: var(--dark-gray);
        }

        .value-num {
            font-size: 5rem;
            font-weight: 300;
            color: var(--mid-gray);
            opacity: 0.3;
            min-width: 120px;
            transition: all 0.3s ease;
            line-height: 1;
        }

        .value-item:hover .value-num {
            opacity: 1;
            color: var(--black);
            transform: translateX(15px);
            font-weight: 350;
        }

        .value-text {
            flex: 1;
        }

        .value-text h3 {
            font-size: 2rem;
            font-weight: 350;
            color: var(--black);
            margin-bottom: 0.5rem;
            letter-spacing: -0.02em;
        }

        .value-text p {
            font-size: 1rem;
            font-weight: 300;
            color: var(--dark-gray);
            max-width: 600px;
            line-height: 1.6;
        }


        .value-item::after {
            content: '';
            display: block;
            width: 0;
            height: 2px;
            background: var(--dark-gray);
            transition: width 0.2s;
        }

        .value-item:hover::after {
            width: 50px;
        }
        /* --- Mission Section --- */
        .mission {
            padding: 6rem 4rem;
            background: var(--white);
            text-align: center;
            position: relative;
        }

        .mission-content {
            max-width: 1200px;
            margin: 0 auto;
            font-size: 1.4rem;
            font-weight: 300;
            line-height: 1.6;
            color: var(--dark-gray);
        }

        .mission-content .principle-list {
            margin: 3rem 0 2rem;
            text-align: left;
            display: inline-block;
            width: 100%;
            max-width: 800px;
        }

        .mission-content .principle-item {
            margin: 1rem 0;
            display: block;
            align-items: baseline;
            border-bottom: 1px dashed rgba(0,0,0,0.05);
            padding-bottom: 0.8rem;
            text-align: center;
        }

        .principle-item strong {
            font-weight: 500;
            color: var(--black);
            width: 120px;
            flex-shrink: 0;
            font-size: 1.2rem;
            letter-spacing: 0.02em;
        }

        .mission-decoration {
            width: 60px;
            height: 1px;
            background: var(--mid-gray);
            margin: 3rem auto 0;
            opacity: 0.3;
        }

        /* --- Business Section --- */
        .business {
            display: grid;
            grid-template-columns: 1fr 1fr;
            min-height: 80vh;
            background: var(--light-gray);
        }

        .business-text {
            padding: 4rem;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .business-text h2 {
            font-size: 3.5rem;
            font-weight: 300;
            color: var(--black);
            letter-spacing: -0.02em;
            margin-bottom: 1.5rem;
            line-height: 1.1;
        }

        .business-text p {
            font-size: 1.1rem;
            font-weight: 300;
            color: var(--dark-gray);
            line-height: 1.6;
            max-width: 500px;
        }

        .business-image {
            height: 100%;
            overflow: hidden;
            background: var(--mid-gray);
        }

        .business-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            filter: grayscale(10%) contrast(1.02) brightness(1.02);
            transition: transform 0.4s ease;
        }

        .business-image:hover img {
            transform: scale(1.02);
        }

        /* --- Inquiry Section --- */
        .inquiry {
            padding: 8rem 4rem;
            background: var(--white);
            text-align: center;
        }

        .inquiry-card {
            max-width: 600px;
            margin: 0 auto;
        }
        .inquiry-card p {
           margin-bottom: 2.5rem;
        }

        .inquiry h3 {
            font-size: 2rem;
            font-weight: 300;
            margin-bottom: 0.5rem;
        }

        .inquiry-tagline {
            font-size: 1rem;
            color: var(--mid-gray);
            margin-bottom: 1rem;
            font-style: italic;
        }

        .inline-form {
            display: flex;
            align-items: baseline;
            gap: 1rem;
            border-bottom: 1px solid var(--dark-gray);
            padding-bottom: 0.5rem;
            transition: border-color 0.2s;
        }

        .inline-form:focus-within {
            border-bottom-color: var(--black);
        }

        .inline-form input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 0.5rem 0;
            font-size: 1.2rem;
            font-weight: 300;
            background: none;
            color: var(--black);
            outline: none;
            font-family: 'Inter', sans-serif;
            min-width: 0;
            border-radius: 0;
            box-shadow: none;
            -webkit-appearance: none;
            -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
        }

          .inline-form button {
            border: none;
            background: transparent;
            font-size: 1rem;
            font-weight: 300;
            color: var(--black);
            cursor: pointer;
            padding: 0.5rem 1rem;
            transition: all 0.2s;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            font-family: 'Inter', sans-serif;
            border: 1px solid transparent;
        }

        .inline-form button:hover {
            border-color: var(--dark-gray);
            background: rgba(0,0,0,0.02);
        }

        .footer {
            padding: 2rem 4rem;
            background: var(--white);
            color: var(--mid-gray);
            font-size: 0.8rem;
            display: flex;
            justify-content: space-between;
            border-top: 1px solid rgba(0,0,0,0.03);
            flex-wrap: wrap;
            gap: 1rem;
        }

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

        /* --- Mobile Optimization --- */
        @media (max-width: 900px) {
            .navbar {
                padding: 1.5rem 2rem;
            }

           .logo-text img{
               width: auto;
            max-height: 15px;
           }
            .navbar.on {
                padding-top: 1rem;
                padding-bottom: 1rem;
            }
            .menu-open .logo-text .logo1{display:none;}
            .menu-open .logo-text .logo2{display:block;}

            .hamburger {
                display: block;
                color: #fff;
            }
            .navbar.on .hamburger{
                color:var(--black) 
            }

            .nav-links {
                position: fixed;
                top: 0;
                left: 0;
                width: 100vw;
                height: 100vh;
                background-color: var(--white);
                flex-direction: column;
                justify-content: center;
                align-items: center;
                gap: 2.5rem;
                transform: translateX(100%);
                transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
                z-index: 1001;
                mix-blend-mode: normal !important; /* Force normal blend mode for mobile menu */
                color: var(--black);
            }

            .nav-links.active {
                transform: translateX(0);
            }

            .nav-links a {
                font-size: 1.5rem;
                color: var(--black); /* Ensure menu text is always black in mobile menu */
                font-weight: 400;
            }

            /* Fix Navbar color when menu is open */
            body.menu-open .navbar {
                mix-blend-mode: normal;
                background: transparent; /* Menu bg handles content */
            }
            
            body.menu-open .logo-text, 
            body.menu-open .hamburger span {
                color: var(--black);
                z-index: 1003;
            }

            .hamburger.open span:nth-child(1) { top: 9px; transform: rotate(135deg); }
            .hamburger.open span:nth-child(2) { opacity: 0; left: -60px; }
            .hamburger.open span:nth-child(3) { top: 9px; transform: rotate(-135deg); }

            /* Layout Adjustments */
            .hero { padding: 2rem; align-items: center; }
            .hero-content h1 { margin-top: 2rem; }
            .hero-content p { font-size: 1rem; }
            .vertical-line { display: none; }

            .values, .mission, .inquiry, .footer {
                padding-left: 1.5rem; padding-right: 1.5rem;
                padding-top: 4rem; padding-bottom: 4rem;
            }

            .value-item { flex-direction: column; gap: 1rem; }
            .value-num { font-size: 3.5rem; opacity: 0.5; }
            .mission-content { font-size: 1.1rem; text-align: left; }
            .mission-content .principle-item { flex-direction: column; align-items: flex-start; gap: 0.2rem; }
            
            .business { grid-template-columns: 1fr; }
            .business-image { height: 40vh; order: -1; }
            .business-text { padding: 3rem 1.5rem; }
            .business-text h2 { font-size: 2.5rem; }

            .inline-form { flex-direction: column; border-bottom: none; gap: 1.5rem; }
            .inline-form input { width: 100%; border-bottom: 1px solid var(--dark-gray); padding: 1rem 0; }
            .inline-form button { width: 100%; border: 1px solid var(--black); padding: 1rem; margin-top: 1rem; }
            .footer { flex-direction: column; text-align: center; gap: 1.5rem; }
        }