/* ===== Reset & Base ===== */
        *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: #333; line-height: 1.6; overflow-x: hidden;
        }
        img { max-width: 100%; display: block; }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }

        /* ===== CSS Variables ===== */
        :root {
            --primary: #043885;
            --primary-light: #1d5faa;
            --primary-dark: #022a63;
            --accent: #e63946;
            --gold: #f0a500;
            --bg-light: #f5f8fc;
            --bg-dark: #0a1628;
            --text-light: #6b7b8d;
            --white: #ffffff;
            --shadow: 0 4px 24px rgba(4, 56, 133, 0.10);
            --shadow-lg: 0 12px 48px rgba(4, 56, 133, 0.15);
            --radius: 12px;
            --transition: all 0.3s ease;
        }

        /* ===== Utility ===== */
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section-padding { padding: 100px 0; }
        .section-title {
            text-align: center; margin-bottom: 60px;
        }
        .section-title h2 {
            font-size: 2.4rem; color: var(--primary); font-weight: 700;
            position: relative; display: inline-block; padding-bottom: 16px;
        }
        .section-title h2::after {
            content: ''; position: absolute; bottom: 0; left: 50%;
            transform: translateX(-50%); width: 60px; height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--primary-light));
            border-radius: 2px;
        }
        .section-title p {
            color: var(--text-light); font-size: 1.1rem; margin-top: 16px;
            max-width: 600px; margin-left: auto; margin-right: auto;
        }

        /* ===== Navigation ===== */
        .navbar {
            position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
            background: rgba(255,255,255,0.95); backdrop-filter: blur(12px);
            box-shadow: 0 1px 12px rgba(0,0,0,0.06);
            transition: var(--transition);
        }
        .navbar .container {
            display: flex; align-items: center; justify-content: space-between;
            height: 72px;
        }
        .navbar-brand { display: flex; align-items: center; gap: 12px; }
        .navbar-brand img { height: 44px; width: auto; }
        .navbar-brand span {
            font-size: 1.3rem; font-weight: 700; color: var(--primary);
            letter-spacing: 1px;
        }
        .nav-links { display: flex; gap: 36px; }
        .nav-links a {
            font-size: 0.95rem; color: #444; font-weight: 500;
            transition: var(--transition); position: relative;
        }
        .nav-links a:hover { color: var(--primary); }
        .nav-links a::after {
            content: ''; position: absolute; bottom: -4px; left: 0;
            width: 0; height: 2px; background: var(--primary);
            transition: width 0.3s;
        }
        .nav-links a:hover::after { width: 100%; }
        .nav-toggle { display: none; cursor: pointer; flex-direction: column; gap: 5px; }
        .nav-toggle span { width: 24px; height: 2px; background: var(--primary); transition: var(--transition); }

        /* ===== Hero ===== */
        .hero {
            position: relative; height: 100vh; min-height: 600px;
            display: flex; align-items: center; overflow: hidden;
        }
        .hero-bg {
            position: absolute; inset: 0; z-index: -1;
            background-image: url(../images/hero_bg.jpg);
            background-size: cover; 
            background-position: center;
        }
        .hero-bg::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(4,56,133,0.88) 0%, rgba(10,22,40,0.75) 100%);
        }
        .hero-content { position: relative; z-index: 1; color: var(--white); max-width: 700px; }
        .hero-content .hero-logo { width: 100px; height: auto; margin-bottom: 24px; filter: brightness(0) invert(1); }
        .hero-content h1 {
            font-size: 3.2rem; font-weight: 800; line-height: 1.2; margin-bottom: 16px;
            text-shadow: 0 2px 12px rgba(0,0,0,0.3);
        }
        .hero-content h1 span { color: var(--gold); }
        .hero-content .hero-subtitle {
            font-size: 1.35rem; opacity: 0.9; margin-bottom: 12px; font-weight: 300;
        }
        .hero-content .hero-slogan {
            font-size: 1.1rem; opacity: 0.75; margin-bottom: 36px;
            border-left: 3px solid var(--gold); padding-left: 16px;
        }
        .hero-btn {
            display: inline-block; padding: 14px 40px; background: var(--gold);
            color: var(--primary-dark); font-weight: 700; font-size: 1rem;
            border-radius: 50px; transition: var(--transition);
            box-shadow: 0 4px 20px rgba(240,165,0,0.4);
        }
        .hero-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(240,165,0,0.5); }
        .hero-stats {
            position: absolute; bottom: 0; left: 0; right: 0;
            background: rgba(255,255,255,0.1); backdrop-filter: blur(16px);
            border-top: 1px solid rgba(255,255,255,0.15);
        }
        .hero-stats .container {
            display: grid; grid-template-columns: repeat(3, 1fr);
            height: auto; padding: 28px 24px;
        }
        .stat-item { text-align: center; color: var(--white); }
        .stat-item .stat-num {
            font-size: 2.4rem; font-weight: 800; line-height: 1;
            background: linear-gradient(135deg, var(--gold), #ffd166);
            -webkit-background-clip: text; -webkit-text-fill-color: transparent;
        }
        .stat-item .stat-num span { font-size: 1rem; -webkit-text-fill-color: rgba(255,255,255,0.7); }
        .stat-item .stat-label { font-size: 0.85rem; opacity: 0.7; margin-top: 4px; }

        /* ===== About ===== */
        .about { background: var(--white); }
        .about-grid {
            display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center;
        }
        .about-image {
            border-radius: var(--radius); overflow: hidden;
            box-shadow: var(--shadow-lg); position: relative;
        }
        .about-image img { width: 100%; height: 400px; object-fit: cover; }
        .about-image::before {
            content: ''; position: absolute; top: -20px; left: -20px;
            width: 100px; height: 100px; border: 3px solid var(--primary);
            border-radius: var(--radius); z-index: -1; opacity: 0.3;
        }
        .about-text h3 {
            font-size: 1.6rem; color: var(--primary); margin-bottom: 20px;
        }
        .about-text p { color: #555; line-height: 1.9; margin-bottom: 16px; font-size: 1.02rem; }
        .about-text .highlight { color: var(--accent); font-weight: 600; }
        .about-tags { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
        .about-tags .tag {
            padding: 8px 20px; background: var(--bg-light); color: var(--primary);
            border-radius: 50px; font-size: 0.9rem; font-weight: 500;
            border: 1px solid rgba(4,56,133,0.1);
        }
        .about-text .about-tips{
            font-size: 0.85rem; opacity: 0.7; margin-top: 24px;
        }

        /* ===== Business Section ===== */
        .business { background: linear-gradient(135deg, #f8fafc 0%, #e8f4fc 100%); }
        .business-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px;
        }
        .business-card {
            background: var(--white); border-radius: var(--radius);
            padding: 40px 32px; box-shadow: var(--shadow);
            transition: var(--transition); position: relative; overflow: hidden;
            border: 1px solid rgba(4,56,133,0.06);
        }
        .business-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .business-card::before {
            content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%;
            background: linear-gradient(180deg, var(--primary), var(--primary-light));
        }
        .business-card .business-icon {
            width: 168px; height: 78px; margin-bottom: 16px;
            display: flex; align-items: center;
            color: #7897b8;
        }
        .business-card .business-icon svg {
            width: 100%; height: 100%; overflow: visible;
            fill: none; stroke: currentColor; stroke-width: 2;
            stroke-linecap: round; stroke-linejoin: round;
        }
        .business-card .business-icon .icon-soft {
            fill: #f7fbff; stroke: #9bb3ca;
        }
        .business-card h3 { font-size: 1.3rem; color: var(--primary); margin-bottom: 12px; }
        .business-card p { color: #666; line-height: 1.8; font-size: 0.95rem; margin-bottom: 16px; }
        .business-card .business-features {
            display: flex; flex-wrap: wrap; gap: 8px;
        }
        .business-card .business-features span {
            padding: 6px 14px; background: var(--bg-light); color: var(--primary);
            border-radius: 20px; font-size: 0.85rem;
        }
        .business-stats-bar {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
            margin-top: 50px; padding: 40px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: var(--radius); color: var(--white);
        }
        .business-stat { text-align: center; }
        .business-stat .num {
            font-size: 2.2rem; font-weight: 800; color: var(--gold);
            margin-bottom: 8px;
        }
        .business-stat .label { font-size: 0.9rem; opacity: 0.9; }
        .service-note {
            margin-top: 28px; padding: 20px 24px; border-radius: var(--radius);
            background: #fff8e6; border: 1px solid #f3d693; color: #614600;
        }
        .service-note strong { color: var(--primary); }
        .process { background: var(--white); }
        .process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
        .process-item { position: relative; padding: 32px 24px; border: 1px solid #dce6f2; border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow); }
        .process-num { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--primary); color: var(--white); font-weight: 700; margin-bottom: 18px; }
        .process-item h3 { color: var(--primary); margin-bottom: 10px; }
        .process-item p { color: #5e6b78; font-size: .94rem; }
        .security { background: var(--bg-dark); color: var(--white); }
        .security .section-title h2 { color: var(--white); }
        .security .section-title p { color: rgba(255,255,255,.72); }
        .security-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
        .security-card { padding: 32px; border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); background: rgba(255,255,255,.06); }
        .security-card h3 { color: #ffd166; margin-bottom: 12px; }
        .security-card p { color: rgba(255,255,255,.78); line-height: 1.8; }
        .contact-panel { display: grid; grid-template-columns: 1.2fr .8fr; gap: 36px; padding: 44px; background: linear-gradient(135deg, #eef5ff, #fff); border: 1px solid #d7e3f2; border-radius: var(--radius); }
        .contact-panel h3 { color: var(--primary); font-size: 1.5rem; margin-bottom: 14px; }
        .contact-list li { margin-top: 12px; color: #4f5e6d; }
        .contact-list strong { display: inline-block; min-width: 82px; color: #26384a; }
        .scope-box { padding: 24px; background: var(--primary); color: var(--white); border-radius: var(--radius); }
        .scope-box h4 { margin-bottom: 12px; color: #ffd166; }
        .scope-box p { font-size: .92rem; opacity: .88; margin-bottom: 10px; }
        @media (max-width: 1024px) {
            .business-grid { grid-template-columns: 1fr; }
            .business-stats-bar { grid-template-columns: repeat(2, 1fr); }
            .process-grid, .security-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 480px) {
            .business-stats-bar { grid-template-columns: 1fr; gap: 20px; }
            .process-grid, .security-grid, .contact-panel { grid-template-columns: 1fr; }
            .contact-panel { padding: 28px 20px; }
        }

        /* ===== Culture (Mission/Vision/Values) ===== */
        .culture { background: var(--bg-light); }
        .culture-cards {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px;
        }
        .culture-card {
            background: var(--white); border-radius: var(--radius);
            padding: 40px 32px; text-align: center;
            box-shadow: var(--shadow); transition: var(--transition);
            position: relative; overflow: hidden;
        }
        .culture-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .culture-card::before {
            content: ''; position: absolute; top: 0; left: 0; right: 0;
            height: 4px; background: linear-gradient(90deg, var(--primary), var(--primary-light));
        }
        .culture-card .card-icon {
            width: 72px; height: 72px; margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 50%; display: flex; align-items: center; justify-content: center;
            color: var(--white); font-size: 2rem;
        }
        .culture-card h3 { font-size: 1.4rem; color: var(--primary); margin-bottom: 16px; }
        .culture-card p { color: #666; line-height: 1.8; font-size: 0.95rem; }

        /* ===== Values Detail ===== */
        .values { background: var(--white); }
        .values-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
        }
        .value-item {
            text-align: center; padding: 36px 20px;
            border-radius: var(--radius); transition: var(--transition);
            background: linear-gradient(180deg, var(--bg-light) 0%, var(--white) 100%);
            border: 1px solid rgba(4,56,133,0.06);
        }
        .value-item:hover {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--white); transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .value-item:hover h3, .value-item:hover p { color: var(--white); }
        .value-item .value-icon {
            font-size: 2.6rem; margin-bottom: 16px;
        }
        .value-item h3 { font-size: 1.5rem; color: var(--primary); margin-bottom: 8px; font-weight: 700; }
        .value-item p { color: var(--text-light); font-size: 0.9rem; }

        /* ===== Five Senses ===== */
        .five-senses { background: var(--bg-dark); color: var(--white); }
        .five-senses .section-title h2 { color: var(--white); }
        .five-senses .section-title h2::after { background: linear-gradient(90deg, var(--gold), #ffd166); }
        .five-senses .section-title p { color: rgba(255,255,255,0.6); }
        .senses-grid {
            display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px;
        }
        .sense-item {
            text-align: center; padding: 36px 16px;
            border-radius: var(--radius);
            background: rgba(255,255,255,0.05); border: 1px solid rgba(255,255,255,0.08);
            transition: var(--transition);
        }
        .sense-item:hover {
            background: rgba(255,255,255,0.1); transform: translateY(-4px);
            border-color: var(--gold);
        }
        .sense-item .sense-icon { font-size: 2.4rem; margin-bottom: 12px; }
        .sense-item h4 { font-size: 1.2rem; font-weight: 600; margin-bottom: 8px; }
        .sense-item p { font-size: 0.85rem; color: rgba(255,255,255,0.5); }

        /* ===== Gallery ===== */
        .gallery { background: var(--bg-light); }
        .gallery-grid {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
        }
        .gallery-item {
            border-radius: var(--radius); overflow: hidden; position: relative;
            aspect-ratio: 4/3; cursor: pointer;
        }
        .gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
        .gallery-item:hover img { transform: scale(1.08); }
        .gallery-item .gallery-overlay {
            position: absolute; inset: 0; background: linear-gradient(transparent 40%, rgba(4,56,133,0.8));
            display: flex; align-items: flex-end; padding: 20px;
            opacity: 0; transition: opacity 0.3s;
        }
        .gallery-item:hover .gallery-overlay { opacity: 1; }
        .gallery-item .gallery-overlay span { color: var(--white); font-weight: 600; font-size: 0.95rem; }
        .gallery-item:first-child { grid-column: span 2; grid-row: span 2; aspect-ratio: auto; }

        /* ===== Benefits ===== */
        .benefits { background: var(--white); }
        .benefits-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
        }
        .benefit-item {
            display: flex; align-items: flex-start; gap: 16px; padding: 28px;
            border-radius: var(--radius); background: var(--bg-light);
            transition: var(--transition);
        }
        .benefit-item:hover { box-shadow: var(--shadow); transform: translateY(-2px); }
        .benefit-item .benefit-icon {
            flex-shrink: 0; width: 48px; height: 48px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px; display: flex; align-items: center; justify-content: center;
            color: var(--white); font-size: 1.4rem;
        }
        .benefit-item h4 { font-size: 1.05rem; color: var(--primary); margin-bottom: 4px; }
        .benefit-item p { font-size: 0.88rem; color: var(--text-light); }

        /* ===== Footer ===== */
        .footer {
            background: #1a1a1a; color: rgba(255,255,255,0.55);
            padding: 0;
        }
        .footer-top {
            padding: 56px 0 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-grid {
            display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 48px;
        }
        .footer h4 { 
            color: var(--white); font-size: 0.95rem; margin-bottom: 20px; 
            font-weight: 600;
        }
        .footer ul { list-style: none; padding: 0; margin: 0; }
        .footer ul li { margin-bottom: 12px; font-size: 0.85rem; line-height: 1.5; }
        .footer ul li a { 
            color: rgba(255,255,255,0.55); transition: color 0.2s; text-decoration: none;
        }
        .footer ul li a:hover { color: var(--white); }
        .footer-mid {
            display: flex; align-items: center; justify-content: space-between;
            padding: 24px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-mid-logo img { 
            height: 36px; filter: brightness(0) invert(1); opacity: 0.9;
        }
        .footer-mid-links {
            display: flex; align-items: center; gap: 28px; flex-wrap: wrap;
        }
        .footer-mid-links a {
            color: rgba(255,255,255,0.55); font-size: 0.82rem;
            text-decoration: none; transition: color 0.2s; white-space: nowrap;
        }
        .footer-mid-links a:hover { color: var(--white); }
        .footer-mid .container {
            display: flex; align-items: center; justify-content: space-between;
            flex-wrap: wrap; gap: 16px;
        }
        .footer-bottom-wrap {
            padding: 20px 0;
        }
        .footer-legal {
            display: flex; align-items: center; flex-wrap: wrap;
            gap: 6px; font-size: 0.78rem; color: rgba(255,255,255,0.35);
            margin-bottom: 8px;
        }
        .footer-legal a {
            color: rgba(255,255,255,0.35); text-decoration: none; transition: color 0.2s;
        }
        .footer-legal a:hover { color: rgba(255,255,255,0.7); }
        .footer-legal .dot {
            margin: 0 4px; color: rgba(255,255,255,0.2);
        }
        .footer-copyright {
            font-size: 0.78rem; color: rgba(255,255,255,0.3); line-height: 1.6;
        }

        /* ===== Scroll Animation ===== */
        .fade-in {
            opacity: 0; transform: translateY(30px);
            transition: opacity 0.6s ease, transform 0.6s ease;
        }
        .fade-in.visible { opacity: 1; transform: translateY(0); }

        /* ===== Back to top ===== */
        .back-to-top {
            position: fixed; bottom: 32px; right: 32px; width: 48px; height: 48px;
            background: var(--primary); color: var(--white); border: none; border-radius: 50%;
            cursor: pointer; font-size: 1.2rem; display: none; align-items: center;
            justify-content: center; box-shadow: var(--shadow); z-index: 999;
            transition: var(--transition);
        }
        .back-to-top:hover { background: var(--primary-light); transform: translateY(-2px); }
        .back-to-top.show { display: flex; }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .culture-cards { grid-template-columns: 1fr; }
            .values-grid { grid-template-columns: repeat(2, 1fr); }
            .senses-grid { grid-template-columns: repeat(3, 1fr); }
            .gallery-grid { grid-template-columns: repeat(2, 1fr); }
            .benefits-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .nav-links { 
                display: none; position: absolute; top: 72px; left: 0; right: 0;
                background: var(--white); flex-direction: column; padding: 20px;
                gap: 16px; box-shadow: var(--shadow);
            }
            .nav-links.active { display: flex; }
            .nav-toggle { display: flex; }
            .hero-content h1 { font-size: 2.2rem; }
            .hero-stats .container { grid-template-columns: repeat(2, 1fr); gap: 16px; }
            .about-grid { grid-template-columns: 1fr; gap: 30px; }
            .process-grid, .security-grid, .contact-panel { grid-template-columns: 1fr; }
            .contact-panel { padding: 32px 24px; }
            .culture-cards { grid-template-columns: 1fr; }
            .values-grid { grid-template-columns: 1fr 1fr; }
            .senses-grid { grid-template-columns: 1fr 1fr; }
            .gallery-grid { grid-template-columns: 1fr 1fr; }
            .gallery-item:first-child { grid-column: span 2; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .footer-mid { flex-direction: column; gap: 16px; align-items: flex-start; }
            .footer-mid-links { gap: 16px; }
            .footer-legal { flex-wrap: wrap; }
            .section-padding { padding: 60px 0; }
            .section-title h2 { font-size: 1.8rem; }
        }
        @media (max-width: 480px) {
            .hero-content h1 { font-size: 1.8rem; }
            .stat-item .stat-num { font-size: 1.8rem; }
            .values-grid { grid-template-columns: 1fr; }
            .senses-grid { grid-template-columns: 1fr; }
            .gallery-grid { grid-template-columns: 1fr; }
            .gallery-item:first-child { grid-column: span 1; }
        }