*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
        :root {
            --primary: #C8102E;
            --primary-light: #E8384F;
            --dark: #1A1A2E;
            --dark2: #16213E;
            --accent: #F0A500;
            --accent-light: #FFD166;
            --light: #F8F9FA;
            --white: #FFFFFF;
            --text: #2D3436;
            --text-light: #636E72;
            --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --shadow: 0 4px 20px rgba(26, 26, 46, 0.08);
            --shadow-lg: 0 12px 40px rgba(26, 26, 46, 0.12);
        }
        html { scroll-behavior: smooth; font-size: 16px; }
        body {
            font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--text); background: var(--white); line-height: 1.7; overflow-x: hidden;
        }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        img { max-width: 100%; display: block; }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .section { padding: 100px 0; }
        .section-label {
            display: inline-flex; align-items: center; gap: 8px;
            font-size: 0.85rem; font-weight: 600; color: var(--primary);
            text-transform: uppercase; letter-spacing: 2px; margin-bottom: 12px;
        }
        .section-label::before { content: ''; width: 32px; height: 2px; background: var(--primary); border-radius: 1px; }
        .section-title {
            font-size: clamp(1.8rem, 4vw, 2.6rem); font-weight: 900;
            color: var(--dark); line-height: 1.3; margin-bottom: 16px;
        }
        .section-desc { font-size: 1.05rem; color: var(--text-light); max-width: 600px; line-height: 1.8; }
        .btn {
            display: inline-flex; align-items: center; gap: 8px;
            padding: 14px 32px; border-radius: 8px; font-size: 0.95rem;
            font-weight: 600; cursor: pointer; border: none; transition: var(--transition); letter-spacing: 0.5px;
        }
        .btn-primary { background: var(--primary); color: var(--white); }
        .btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(200,16,46,0.3); }
        .btn-outline { background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,0.5); }
        .btn-outline:hover { background: var(--white); color: var(--dark); border-color: var(--white); }
        .btn-accent { background: var(--accent); color: var(--dark); }
        .btn-accent:hover { background: var(--accent-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(240,165,0,0.3); }

        /* Animations */
        .fade-up { opacity: 0; transform: translateY(40px); transition: opacity 0.7s ease, transform 0.7s ease; }
        .fade-up.visible { opacity: 1; transform: translateY(0); }
        .fade-up.delay-1 { transition-delay: 0.1s; }
        .fade-up.delay-2 { transition-delay: 0.2s; }
        .fade-up.delay-3 { transition-delay: 0.3s; }
        .fade-up.delay-4 { transition-delay: 0.4s; }
        .fade-up.delay-5 { transition-delay: 0.5s; }

        /* ===== Navbar ===== */
        .navbar {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            padding: 16px 0; transition: var(--transition);
        }
        .navbar.scrolled {
            background: rgba(255,255,255,0.96); backdrop-filter: blur(12px);
            padding: 10px 0; box-shadow: 0 2px 20px rgba(0,0,0,0.06);
        }
        .navbar .container { display: flex; align-items: center; justify-content: space-between; }
        .nav-logo {
            display: flex; align-items: center; gap: 10px; font-weight: 900;
            font-size: 1.2rem; color: var(--white); transition: var(--transition);
        }
        .navbar.scrolled .nav-logo { color: var(--dark); }
        .nav-logo-icon {
            width: 40px; height: 40px; background: var(--primary);
            border-radius: 10px; display: flex; align-items: center; justify-content: center;
            color: var(--white); font-weight: 900; font-size: 1.05rem;
        }
        .nav-links { display: flex; align-items: center; gap: 32px; }
        .nav-links a {
            font-size: 0.9rem; font-weight: 500; color: rgba(255,255,255,0.85);
            transition: var(--transition); position: relative;
        }
        .nav-links a::after {
            content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
            background: var(--primary); transition: var(--transition); border-radius: 1px;
        }
        .nav-links a:hover::after { width: 100%; }
        .navbar.scrolled .nav-links a { color: var(--text); }
        .navbar.scrolled .nav-links a:hover { color: var(--primary); }
        .nav-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
        .nav-toggle span { width: 24px; height: 2px; background: var(--white); transition: var(--transition); border-radius: 1px; }
        .navbar.scrolled .nav-toggle span { background: var(--dark); }

        /* ===== Hero ===== */
        .hero {
            position: relative; min-height: 100vh; display: flex; align-items: center; overflow: hidden;
        }
        .hero-bg { position: absolute; inset: 0; z-index: 0; }
        .hero-bg img { width: 100%; height: 100%; object-fit: cover; }
        .hero-bg::after {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(26,26,46,0.92) 0%, rgba(22,33,62,0.82) 40%, rgba(200,16,46,0.25) 100%);
        }
        .hero .container { position: relative; z-index: 1; }
        .hero-content { max-width: 700px; }
        .hero-badge {
            display: inline-flex; align-items: center; gap: 8px;
            background: rgba(240,165,0,0.12); border: 1px solid rgba(240,165,0,0.25);
            padding: 8px 18px; border-radius: 50px; font-size: 0.85rem;
            color: var(--accent-light); margin-bottom: 24px; backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: clamp(2.4rem, 5.5vw, 3.6rem); font-weight: 900;
            color: var(--white); line-height: 1.2; margin-bottom: 20px;
        }
        .hero-title .highlight {
            background: linear-gradient(135deg, var(--primary-light), var(--accent));
            -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
        }
        .hero-desc {
            font-size: 1.15rem; color: rgba(255,255,255,0.72); line-height: 1.8;
            margin-bottom: 36px; max-width: 540px;
        }
        .hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }
        .hero-stats {
            display: flex; gap: 48px; margin-top: 64px;
            padding-top: 40px; border-top: 1px solid rgba(255,255,255,0.1);
        }
        .hero-stat-num { font-size: 2.2rem; font-weight: 900; color: var(--white); line-height: 1.2; }
        .hero-stat-num span { color: var(--accent); }
        .hero-stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.5); margin-top: 4px; }

        /* Floating shapes */
        .hero-shapes { position: absolute; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
        .shape { position: absolute; border-radius: 50%; opacity: 0.06; animation: floatShape 8s ease-in-out infinite; }
        .shape-1 { width: 400px; height: 400px; background: var(--primary); top: -100px; right: -100px; }
        .shape-2 { width: 250px; height: 250px; background: var(--accent); bottom: 10%; right: 20%; animation-delay: -3s; }
        .shape-3 { width: 180px; height: 180px; background: var(--primary-light); top: 30%; right: 10%; animation-delay: -5s; }
        @keyframes floatShape { 0%,100% { transform: translateY(0) scale(1); } 50% { transform: translateY(-30px) scale(1.05); } }

        /* ===== About ===== */
        .about { background: var(--light); }
        .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; }
        .about-image { position: relative; border-radius: 16px; overflow: hidden; box-shadow: var(--shadow-lg); }
        .about-image img { width: 100%; height: 360px; object-fit: cover; }
        .about-image-badge {
            position: absolute; bottom: 20px; right: 20px;
            background: var(--primary); color: var(--white); padding: 12px 20px;
            border-radius: 10px; font-weight: 700; font-size: 0.9rem;
            box-shadow: 0 4px 16px rgba(200,16,46,0.3);
        }
        .about-text .section-desc { margin-bottom: 20px; }
        .about-features { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 24px; }
        .about-feature {
            display: flex; align-items: flex-start; gap: 10px;
            padding: 14px; border-radius: 10px; background: var(--white);
            box-shadow: 0 2px 8px rgba(0,0,0,0.04);
        }
        .about-feature-icon {
            width: 36px; height: 36px; border-radius: 8px; flex-shrink: 0;
            display: flex; align-items: center; justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--white); font-size: 0.85rem;
        }
        .about-feature-text { font-size: 0.88rem; font-weight: 500; color: var(--dark); line-height: 1.4; }

        /* ===== Business ===== */
        .business-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-top: 48px; }
        .business-card {
            background: var(--white); border-radius: 16px; overflow: hidden;
            box-shadow: var(--shadow); transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.04);
        }
        .business-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
        .business-card-img { width: 100%; height: 200px; object-fit: cover; }
        .business-card-body { padding: 28px 24px; }
        .business-card-title {
            font-size: 1.15rem; font-weight: 700; color: var(--dark); margin-bottom: 10px;
            display: flex; align-items: center; gap: 8px;
        }
        .business-card-title .icon { font-size: 1.3rem; }
        .business-card-desc { font-size: 0.92rem; color: var(--text-light); line-height: 1.7; }
        .business-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 16px; }
        .business-tag {
            padding: 4px 12px; border-radius: 4px; font-size: 0.75rem;
            font-weight: 500; background: var(--light); color: var(--dark);
        }

        /* ===== Brand - 东约到家 ===== */
        .brand-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark2) 100%);
            position: relative; overflow: hidden;
        }
        .brand-section::before {
            content: ''; position: absolute; top: -30%; right: -10%;
            width: 500px; height: 500px; border-radius: 50%;
            background: rgba(200,16,46,0.06); pointer-events: none;
        }
        .brand-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; position: relative; z-index: 1; }
        .brand-text .section-title { color: var(--white); }
        .brand-text .section-desc { color: rgba(255,255,255,0.65); }
        .brand-features { margin-top: 28px; display: flex; flex-direction: column; gap: 16px; }
        .brand-feature {
            display: flex; gap: 14px; padding: 16px; border-radius: 10px;
            background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.06);
            transition: var(--transition);
        }
        .brand-feature:hover { background: rgba(255,255,255,0.08); }
        .brand-feature-icon {
            width: 44px; height: 44px; border-radius: 10px; flex-shrink: 0;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.2rem; background: rgba(200,16,46,0.15);
        }
        .brand-feature-title { font-size: 0.95rem; font-weight: 600; color: var(--white); margin-bottom: 4px; }
        .brand-feature-desc { font-size: 0.85rem; color: rgba(255,255,255,0.5); }
        .brand-visual {
            background: rgba(255,255,255,0.04); border-radius: 16px; padding: 40px;
            border: 1px solid rgba(255,255,255,0.06); text-align: center;
        }
        .brand-logo-large {
            font-size: 3rem; font-weight: 900; color: var(--white); margin-bottom: 8px;
        }
        .brand-logo-large .accent { color: var(--primary-light); }
        .brand-logo-sub { font-size: 1rem; color: rgba(255,255,255,0.4); letter-spacing: 4px; }
        .brand-categories {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 28px;
        }
        .brand-cat {
            padding: 12px 8px; border-radius: 8px; background: rgba(200,16,46,0.1);
            border: 1px solid rgba(200,16,46,0.15); text-align: center;
        }
        .brand-cat-icon { font-size: 1.5rem; margin-bottom: 4px; }
        .brand-cat-name { font-size: 0.8rem; color: rgba(255,255,255,0.7); font-weight: 500; }

        /* ===== Scope ===== */
        .scope { background: var(--white); }
        .scope-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px 60px; margin-top: 48px; }
        .scope-item { display: flex; gap: 20px; padding: 24px; border-radius: 14px; transition: var(--transition); border: 1px solid transparent; }
        .scope-item:hover { background: var(--light); border-color: rgba(200,16,46,0.08); }
        .scope-num {
            width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.1rem; font-weight: 900; color: var(--primary); background: rgba(200,16,46,0.06);
        }
        .scope-title { font-size: 1.05rem; font-weight: 700; color: var(--dark); margin-bottom: 6px; }
        .scope-desc { font-size: 0.9rem; color: var(--text-light); line-height: 1.7; }

        /* ===== Stats ===== */
        .stats {
            background: linear-gradient(135deg, var(--primary) 0%, #8B0000 100%);
            position: relative; overflow: hidden;
        }
        .stats::before {
            content: ''; position: absolute; top: -50%; right: -20%;
            width: 600px; height: 600px; border-radius: 50%;
            background: rgba(255,255,255,0.05); pointer-events: none;
        }
        .stats-inner { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; z-index: 1; }
        .stat-item { text-align: center; padding: 20px; }
        .stat-number { font-size: clamp(2.2rem, 4vw, 3rem); font-weight: 900; color: var(--white); line-height: 1.2; }
        .stat-number .accent { color: var(--accent-light); }
        .stat-label { font-size: 0.9rem; color: rgba(255,255,255,0.7); margin-top: 8px; }
        .stat-divider { width: 40px; height: 3px; background: var(--accent); margin: 12px auto 0; border-radius: 2px; }

        /* ===== CTA ===== */
        .cta { background: var(--light); text-align: center; }
        .cta .section-title { color: var(--dark); }
        .cta .section-desc { margin: 0 auto 32px; }

        /* ===== Contact ===== */
        .contact { background: var(--white); }
        .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 48px; }
        .contact-info { display: flex; flex-direction: column; gap: 24px; }
        .contact-item { display: flex; gap: 16px; }
        .contact-icon {
            width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0;
            display: flex; align-items: center; justify-content: center;
            background: rgba(200,16,46,0.06); font-size: 1.2rem;
        }
        .contact-label { font-size: 0.85rem; color: var(--text-light); margin-bottom: 2px; }
        .contact-value { font-size: 1rem; font-weight: 600; color: var(--dark); }
        .contact-form { display: flex; flex-direction: column; gap: 16px; }
        .form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
        .form-input, .form-textarea {
            width: 100%; padding: 14px 18px; border: 1.5px solid #E8ECF1;
            border-radius: 10px; font-size: 0.95rem; font-family: inherit;
            transition: var(--transition); background: var(--light);
        }
        .form-input:focus, .form-textarea:focus {
            outline: none; border-color: var(--primary); background: var(--white);
            box-shadow: 0 0 0 4px rgba(200,16,46,0.06);
        }
        .form-textarea { resize: vertical; min-height: 120px; }
        .form-submit {
            align-self: flex-start; padding: 14px 40px;
            background: var(--primary); color: var(--white); border: none;
            border-radius: 10px; font-size: 1rem; font-weight: 600;
            cursor: pointer; transition: var(--transition); font-family: inherit;
        }
        .form-submit:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(200,16,46,0.3); }

        /* ===== Footer ===== */
        .footer { background: var(--dark); color: rgba(255,255,255,0.6); padding: 60px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
        .footer-logo { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; }
        .footer-logo-icon {
            width: 36px; height: 36px; background: var(--primary); border-radius: 8px;
            display: flex; align-items: center; justify-content: center;
            color: var(--white); font-weight: 900; font-size: 0.95rem;
        }
        .footer-logo-text { font-weight: 900; font-size: 1.1rem; color: var(--white); }
        .footer-brand p { font-size: 0.88rem; line-height: 1.8; max-width: 300px; }
        .footer-title { font-size: 0.9rem; font-weight: 700; color: var(--white); margin-bottom: 16px; }
        .footer-links { display: flex; flex-direction: column; gap: 10px; }
        .footer-links a { font-size: 0.88rem; transition: var(--transition); }
        .footer-links a:hover { color: var(--primary-light); }
        .footer-bottom {
            margin-top: 40px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.06);
            display: flex; justify-content: space-between; align-items: center; font-size: 0.82rem;
        }
        .footer-icp { color: rgba(255,255,255,0.3); }

        /* ===== Mobile Nav ===== */
        .mobile-nav {
            position: fixed; inset: 0; z-index: 999;
            background: rgba(26,26,46,0.97); backdrop-filter: blur(12px);
            display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 24px;
            opacity: 0; pointer-events: none; transition: var(--transition);
        }
        .mobile-nav.active { opacity: 1; pointer-events: auto; }
        .mobile-nav a { font-size: 1.3rem; font-weight: 600; color: var(--white); transition: var(--transition); }
        .mobile-nav a:hover { color: var(--primary-light); }
        .mobile-nav-close {
            position: absolute; top: 20px; right: 24px;
            font-size: 2rem; color: var(--white); cursor: pointer; background: none; border: none;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .business-grid { grid-template-columns: repeat(2, 1fr); }
            .stats-inner { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .brand-grid { grid-template-columns: 1fr; }
        }
        @media (max-width: 768px) {
            .section { padding: 64px 0; }
            .nav-links { display: none; }
            .nav-toggle { display: flex; }
            .hero-stats { gap: 24px; flex-wrap: wrap; }
            .about-grid { grid-template-columns: 1fr; gap: 32px; }
            .business-grid { grid-template-columns: 1fr; }
            .stats-inner { grid-template-columns: 1fr 1fr; }
            .scope-grid { grid-template-columns: 1fr; }
            .contact-grid { grid-template-columns: 1fr; }
            .form-row { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; gap: 8px; text-align: center; }
            .brand-categories { grid-template-columns: repeat(2, 1fr); }
        }

        ::-webkit-scrollbar { width: 8px; }
        ::-webkit-scrollbar-track { background: var(--light); }
        ::-webkit-scrollbar-thumb { background: var(--primary); border-radius: 4px; }