/* ========== CSS Variables & Reset ========== */
        :root {
            --brand-primary: #43A047;
            --brand-dark: #2E7D32;
            --brand-light: #E8F5E9;
            --brand-accent: #FF8F00;
            --text-primary: #2C3E50;
            --text-secondary: #546E7A;
            --text-light: #78909C;
            --bg-white: #FFFFFF;
            --bg-warm: #FAFBFC;
            --bg-section-alt: #F5F7FA;
            --border-light: #E8ECF0;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
            --shadow-lg: 0 8px 40px rgba(0,0,0,0.12);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-cn: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'WenQuanYi Micro Hei', sans-serif;
            --font-en: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            --max-width: 1200px;
            --header-height: 72px;
        }

        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; font-size: 16px; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-cn);
            color: var(--text-primary);
            background: var(--bg-white);
            line-height: 1.8;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { color: var(--brand-primary); text-decoration: none; transition: color .2s; }
        a:hover { color: var(--brand-dark); }
        h1, h2, h3, h4 { line-height: 1.4; font-weight: 700; color: var(--text-primary); }
        h1 { font-size: clamp(2rem, 5vw, 3.2rem); letter-spacing: -0.02em; }
        h2 { font-size: clamp(1.5rem, 3.5vw, 2.2rem); margin-bottom: 1rem; }
        h3 { font-size: clamp(1.15rem, 2vw, 1.4rem); }
        p { margin-bottom: 1rem; color: var(--text-secondary); }
        .container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
        .section { padding: 80px 0; }
        .section-alt { background: var(--bg-section-alt); }
        .section-label {
            display: inline-block; font-size: 0.85rem; font-weight: 600;
            color: var(--brand-primary); text-transform: uppercase;
            letter-spacing: 0.15em; margin-bottom: 12px;
        }
        .section-title { text-align: center; margin-bottom: 48px; }
        .section-title p { max-width: 640px; margin: 12px auto 0; font-size: 1.05rem; }
        .divider { width: 48px; height: 3px; background: var(--brand-primary); border-radius: 2px; margin: 16px auto; }

        /* ========== Header ========== */
        .header {
            position: relative; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(255,255,255,0.96); backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-light);
            transition: all .3s ease; height: var(--header-height);
        }
        .header.scrolled { box-shadow: var(--shadow-sm); }
        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
        }
        .header-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
        .header-logo img { height: 44px; width: auto; display: block; }
        .nav { display: flex; align-items: center; gap: 28px; }
        .nav a {
            font-size: 0.92rem; font-weight: 500; color: var(--text-secondary);
            transition: color .2s; white-space: nowrap;
        }
        .nav a:hover, .nav a.active { color: var(--brand-primary); }
        .nav-btn {
            background: var(--brand-primary) !important; color: #fff !important;
            padding: 8px 20px !important; border-radius: 24px;
            font-weight: 600; transition: background .2s !important;
        }
        .nav-btn:hover { background: var(--brand-dark) !important; }
        .menu-toggle { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
        .menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text-primary); border-radius: 2px; transition: all .3s; }

    /* ========== Hero ========== */
    .hero {
        position: relative;
        top: 0; left: 0;
        width: 100%;
        height: 100vh;
        min-height: 600px;
        overflow: hidden;
        cursor: pointer;
        z-index: 100;
        transition: opacity 0.5s ease, visibility 0.5s ease;
    }
    .hero.hidden {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }
    .hero-prompt {
        position: absolute;
        bottom: 40px;
        left: 50%;
        transform: translateX(-50%);
        color: #fff;
        font-size: 0.95rem;
        letter-spacing: 0.2em;
        text-shadow: 0 2px 8px rgba(0,0,0,0.6);
        animation: pulse 2s infinite;
        z-index: 2;
    }
    @keyframes pulse {
        0%, 100% { opacity: 0.6; }
        50% { opacity: 1; }
    }
    body.hero-locked { overflow: hidden; }
    body.hero-locked .header { display: none; }
    body.hero-locked > *:not(.hero) { visibility: hidden; }
    .hero-bg {
        position: absolute; top: 0; left: 0; width: 100%; height: 100%;
        object-fit: cover; object-position: center;
        z-index: 0;
    }
    .hero-overlay {
        position: absolute; bottom: 0; left: 0; right: 0;
        height: 100%;
        background: linear-gradient(to bottom, rgba(45,80,60,0.15) 0%, rgba(45,80,60,0) 40%, rgba(45,80,60,0) 60%, rgba(45,80,60,0.2) 100%);
        z-index: 1; pointer-events: none;
    }
    .hero-content {
        position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%);
        z-index: 2; text-align: center; color: #fff;
        width: 90%; max-width: 800px;
        text-shadow: 0 2px 10px rgba(0,0,0,0.25);
    }
    .hero-content h1 {
        color: #fff; font-size: clamp(2.2rem, 5.5vw, 3.8rem);
        margin-bottom: 20px; letter-spacing: 0.04em;
    }
    .hero-content p {
        color: rgba(255,255,255,0.95); font-size: clamp(1rem, 2vw, 1.25rem);
        margin-bottom: 32px; letter-spacing: 0.05em;
    }
    .hero-tagline {
        font-size: 1.1rem; letter-spacing: 0.3em; font-weight: 600;
        margin-bottom: 16px; color: #fff; opacity: 0.95;
    }

    /* ========== Brand Banner ========== */
    .brand-banner {
        background: linear-gradient(180deg, #2E7D32 0%, #388E3C 100%);
        color: #fff; padding: calc(var(--header-height) + 48px) 0 56px; text-align: center;
        position: relative; overflow: hidden;
        scroll-margin-top: var(--header-height);
    }
    .brand-banner::before {
        content: ''; position: absolute; top: -80px; right: -120px;
        width: 360px; height: 360px; border-radius: 50%;
        background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
        pointer-events: none;
    }
    .brand-banner::after {
        content: ''; position: absolute; bottom: -100px; left: -100px;
        width: 320px; height: 320px; border-radius: 50%;
        background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
        pointer-events: none;
    }
    .brand-banner > .container { position: relative; z-index: 1; }
    .brand-banner .brand-logo {
        display: block; margin: 0 auto 22px; height: 80px; width: auto;
    }
    .brand-banner .brand-nav {
        display: flex; align-items: center; justify-content: center;
        gap: 10px; flex-wrap: wrap; margin: 22px auto 0; max-width: 980px;
    }
    .brand-banner .brand-nav a {
        color: #fff; font-size: 0.92rem; font-weight: 500;
        padding: 6px 14px; border-radius: 20px;
        background: rgba(255,255,255,0.12);
        transition: background .2s; white-space: nowrap;
    }
    .brand-banner .brand-nav a:hover { background: rgba(255,255,255,0.22); }
    .brand-banner .brand-nav a.nav-cta {
        background: #fff; color: var(--brand-dark); font-weight: 600;
    }
    .brand-banner .brand-nav a.nav-cta:hover { background: rgba(255,255,255,0.92); }
    .brand-banner h2 {
        font-size: clamp(1.4rem, 3vw, 2rem); color: #fff;
        margin: 8px 0 12px; letter-spacing: 0.06em; font-weight: 500;
    }
    .brand-banner p {
        color: rgba(255,255,255,0.85); font-size: 1.05rem;
        max-width: 600px; margin: 0 auto;
    }

        .about-mission {
            background: linear-gradient(135deg, var(--brand-dark), var(--brand-primary));
            color: #fff; padding: 40px 44px; border-radius: var(--radius-lg);
            position: relative; overflow: hidden;
        }
        .about-mission::before { content: '"'; position: absolute; top: -10px; left: 20px; font-size: 120px; opacity: 0.1; font-family: Georgia, serif; line-height: 1; }
        .about-mission h3 { color: #fff; margin-bottom: 16px; font-size: 1.25rem; }
        .about-mission p { color: rgba(255,255,255,0.88); font-size: 1.05rem; line-height: 1.9; }
        .about-mission .highlight { color: #AED581; font-weight: 700; }

        /* ========== About Single Column ========== */
        .about-main { max-width: 720px; margin: 0 auto; text-align: center; }
        .about-lead { margin-bottom: 32px; }
        .about-lead h2 { margin-bottom: 16px; }
        .about-lead h2 strong { color: var(--brand-dark); }
        .about-lead .divider { margin: 16px auto; }
        .about-values { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin-top: 32px; text-align: left; }
        .value-card { background: var(--bg-warm); padding: 20px 24px; border-radius: var(--radius-sm); border-left: 3px solid var(--brand-primary); }
        .value-card strong { display: block; color: var(--brand-dark); margin-bottom: 4px; font-size: 0.95rem; }
        .value-card span { font-size: 0.88rem; color: var(--text-light); }

        /* ========== Advantages ========== */
        .adv-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 28px; }
        .adv-card { background: #fff; padding: 36px 32px; border-radius: var(--radius-md); border: 1px solid var(--border-light); transition: all .3s; }
        .adv-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
        .adv-num { display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px; background: var(--brand-light); color: var(--brand-primary); border-radius: 10px; font-weight: 800; font-size: 1.1rem; margin-bottom: 20px; }
        .adv-card h3 { font-size: 1.15rem; margin-bottom: 12px; }
        .adv-card p { font-size: 0.94rem; line-height: 1.75; }

        /* ========== Products ========== */
        .product-tabs { display: flex; justify-content: center; gap: 12px; margin-bottom: 48px; flex-wrap: wrap; }
        .product-tab {
            padding: 12px 28px; border-radius: 28px; font-size: 0.95rem; font-weight: 600;
            cursor: pointer; border: 2px solid var(--border-light); background: #fff;
            color: var(--text-secondary); transition: all .25s; font-family: inherit;
        }
        .product-tab.active { background: var(--brand-primary); color: #fff; border-color: var(--brand-primary); }
        .product-tab:hover:not(.active) { border-color: var(--brand-primary); color: var(--brand-primary); }
        .product-panel { display: none; animation: fadeIn .4s ease; }
        .product-panel.active { display: block; }
        .product-hero-image {
            width: 100%; height: 280px; object-fit: cover; border-radius: var(--radius-md);
            margin-bottom: 32px; box-shadow: var(--shadow-sm);
            max-width: 100%;
        }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
        .product-header { text-align: center; margin-bottom: 40px; }
        .product-header .product-icon { font-size: 3rem; margin-bottom: 16px; }
        .product-header h3 { font-size: 1.5rem; margin-bottom: 8px; }
        .product-desc { max-width: 640px; margin: 0 auto 32px; font-size: 1.02rem; }
        .product-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
        .product-item { background: #fff; border-radius: var(--radius-md); padding: 28px 26px; border: 1px solid var(--border-light); transition: all .3s; }
        .product-item:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
        .product-item h4 { font-size: 1.1rem; margin-bottom: 8px; color: var(--brand-dark); }
        .product-item .tag { display: inline-block; font-size: 0.78rem; padding: 3px 10px; border-radius: 12px; background: var(--brand-light); color: var(--brand-primary); font-weight: 600; margin-bottom: 12px; }
        .product-item p { font-size: 0.92rem; line-height: 1.7; }

        /* ========== Age Grading ========== */
        .age-timeline { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; margin-top: 20px; }
        .age-timeline::before { content: ''; position: absolute; top: 52px; left: 10%; right: 10%; height: 3px; background: linear-gradient(to right, var(--brand-primary), #81C784, #AED581, #C5E1A5); border-radius: 2px; }
        .age-card { text-align: center; position: relative; z-index: 1; }
        .age-circle {
            width: 100px; height: 100px; border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-primary), #66BB6A);
            color: #fff; display: flex; flex-direction: column; align-items: center; justify-content: center;
            margin: 0 auto 20px; box-shadow: 0 4px 20px rgba(61,139,64,0.25); transition: transform .3s;
        }
        .age-card:hover .age-circle { transform: scale(1.08); }
        .age-range { font-size: 1rem; font-weight: 700; }
        .age-stage { font-size: 0.72rem; opacity: 0.85; margin-top: 2px; }
        .age-card h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .age-card p { font-size: 0.88rem; }

        /* ========== Founder ========== */
        .founder-layout { display: grid; grid-template-columns: 280px 1fr; gap: 56px; align-items: start; }
        .founder-avatar {
            width: 240px; height: 240px; border-radius: 50%;
            background: linear-gradient(135deg, var(--brand-light), #C8E6C9);
            display: flex; align-items: center; justify-content: center;
            font-size: 4rem; margin: 0 auto; border: 4px solid #fff; box-shadow: var(--shadow-md);
        }
        .founder-info h3 { font-size: 1.4rem; margin-bottom: 4px; }
        .founder-info .role { color: var(--brand-primary); font-weight: 600; font-size: 0.95rem; margin-bottom: 20px; }
        .founder-bio p { font-size: 1rem; line-height: 1.95; margin-bottom: 16px; }
        .founder-highlights { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 24px; }
        .fh-item { display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: var(--brand-light); border-radius: var(--radius-sm); }
        .fh-icon { font-size: 1.3rem; }
        .fh-text { font-size: 0.9rem; font-weight: 500; color: var(--text-primary); }

        /* ========== Mentor list ========== */
        .mentor-list { margin-top: 8px; }
        .mentor-list .founder-layout { grid-template-columns: 200px 1fr; gap: 44px; margin-top: 56px; align-items: center; }
        .mentor-list .founder-layout:first-child { margin-top: 36px; }
        .mentor-list .founder-avatar { width: 160px; height: 160px; font-size: 2.6rem; }

        /* ========== Field Records ========== */
        .record-grid {
            display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 40px;
        }
        .record-card {
            background: #fff; border-radius: var(--radius-md); overflow: hidden;
            box-shadow: var(--shadow-sm); border: 1px solid var(--border-light); transition: all .3s;
        }
        .record-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); }
        .record-card img { width: 100%; height: 240px; object-fit: cover; }
        .record-card .record-caption { padding: 24px; }
        .record-card h4 { font-size: 1.1rem; margin-bottom: 8px; color: var(--text-primary); }
        .record-card p { font-size: 0.92rem; line-height: 1.7; color: var(--text-secondary); margin: 0; }
        .record-tag {
            display: inline-block; font-size: 0.75rem; font-weight: 600;
            padding: 3px 10px; border-radius: 12px; background: var(--brand-light);
            color: var(--brand-primary); margin-bottom: 10px;
        }
        .record-wide { grid-column: span 2; }
        .record-wide img { height: 320px; }
        .record-note {
            max-width: 760px; margin: 0 auto; text-align: center;
            padding: 28px 32px; background: #fff; border-radius: var(--radius-md);
            border-left: 4px solid var(--brand-primary); box-shadow: var(--shadow-sm);
        }
        .record-note p { font-size: 1rem; color: var(--text-secondary); margin: 0; line-height: 1.8; }
        @media (max-width: 900px) {
            .record-grid { grid-template-columns: 1fr; }
            .record-wide { grid-column: span 1; }
            .record-wide img { height: 240px; }
        }

        /* ========== News & Updates ========== */
        .news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-bottom: 32px; }
        .news-card {
            display: flex; gap: 20px; background: #fff; padding: 24px;
            border-radius: var(--radius-md); border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm); transition: all .25s;
        }
        .news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: transparent; }
        .news-date {
            flex-shrink: 0; width: 64px; text-align: center;
            display: flex; flex-direction: column; align-items: center; justify-content: center;
        }
        .nd-day { font-size: 1.8rem; font-weight: 800; color: var(--brand-primary); line-height: 1; }
        .nd-mon { font-size: 0.75rem; color: var(--text-light); letter-spacing: 0.05em; margin-top: 4px; }
        .news-body { flex: 1; }
        .news-tag {
            display: inline-block; font-size: 0.72rem; font-weight: 600;
            padding: 2px 8px; border-radius: 10px; background: var(--brand-light);
            color: var(--brand-primary); margin-bottom: 8px;
        }
        .news-body h4 { font-size: 1.05rem; margin-bottom: 8px; }
        .news-body p { font-size: 0.92rem; line-height: 1.7; color: var(--text-secondary); margin-bottom: 12px; }
        .news-link { font-size: 0.9rem; font-weight: 600; color: var(--brand-primary); }
        .news-link:hover { color: var(--brand-dark); }
        .news-more { text-align: center; color: var(--text-secondary); font-size: 0.95rem; }
        .news-extra { display: none; }
        .news-grid.show-all .news-extra { display: flex; }
        .news-toggle-wrap { text-align: center; margin: 4px 0 36px; }
        .news-toggle {
            display: inline-block; padding: 12px 30px; font-size: 0.95rem; font-weight: 600;
            color: #fff; background: var(--brand-primary); border: none; border-radius: 24px;
            cursor: pointer; transition: all .2s;
        }
        .news-toggle:hover { background: var(--brand-dark); transform: translateY(-2px); }

        .news-more strong { color: var(--brand-primary); }
        @media (max-width: 900px) {
            .news-grid { grid-template-columns: 1fr; }
            .news-card { flex-direction: column; gap: 12px; }
        }

        /* ========== Contact ========== */
        .contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
        .contact-cards { display: flex; flex-direction: column; gap: 20px; }
        .contact-card { display: flex; align-items: center; gap: 20px; padding: 24px 28px; background: #fff; border-radius: var(--radius-md); border: 1px solid var(--border-light); transition: all .25s; }
        .contact-card:hover { box-shadow: var(--shadow-sm); border-color: var(--brand-primary); }
        .cc-icon { width: 52px; height: 52px; border-radius: 14px; background: var(--brand-light); display: flex; align-items: center; justify-content: center; font-size: 1.4rem; flex-shrink: 0; }
        .cc-label { font-size: 0.82rem; color: var(--text-light); }
        .cc-value { font-size: 1.05rem; font-weight: 600; color: var(--text-primary); }
        .contact-form-wrap { background: #fff; border-radius: var(--radius-lg); padding: 36px; box-shadow: var(--shadow-md); border: 1px solid var(--border-light); }
        .form-group { margin-bottom: 20px; }
        .form-group label { display: block; font-size: 0.9rem; font-weight: 600; margin-bottom: 8px; color: var(--text-primary); }
        .form-group input, .form-group textarea { width: 100%; padding: 12px 16px; border: 1.5px solid var(--border-light); border-radius: var(--radius-sm); font-size: 0.95rem; font-family: inherit; color: var(--text-primary); transition: border-color .2s; outline: none; }
        .form-group input:focus, .form-group textarea:focus { border-color: var(--brand-primary); box-shadow: 0 0 0 3px rgba(61,139,64,0.1); }
        .form-group textarea { min-height: 100px; resize: vertical; }
        .form-submit { width: 100%; padding: 14px; background: var(--brand-primary); color: #fff; border: none; border-radius: var(--radius-sm); font-size: 1rem; font-weight: 600; cursor: pointer; transition: background .2s; font-family: inherit; }
        .form-submit:hover { background: var(--brand-dark); }

        /* ========== Footer ========== */
        .footer { background: var(--brand-dark); color: rgba(255,255,255,0.8); padding: 56px 0 0; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; padding-bottom: 40px; }
        .footer-brand img { margin-bottom: 16px; }
        .footer-brand p { color: rgba(255,255,255,0.65); font-size: 0.9rem; }
        .footer-col h4 { color: #fff; font-size: 0.95rem; margin-bottom: 16px; font-weight: 600; }
        .footer-col ul { list-style: none; }
        .footer-col li { margin-bottom: 10px; }
        .footer-col a { color: rgba(255,255,255,0.65); font-size: 0.9rem; transition: color .2s; }
        .footer-col a:hover { color: #AED581; }
        .footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; text-align: center; font-size: 0.82rem; color: rgba(255,255,255,0.45); }

        /* ========== Mobile ========== */
        @media (max-width: 900px) {
            .nav { display: none; position: fixed; top: var(--header-height); left: 0; right: 0; bottom: 0; background: #fff; flex-direction: column; padding: 32px 24px; gap: 0; z-index: 999; overflow-y: auto; }
            .nav.open { display: flex; }
            .nav a { padding: 16px 0; font-size: 1.1rem; border-bottom: 1px solid var(--border-light); }
            .menu-toggle { display: flex; }
            .hero { min-height: 500px; }
            .hero-content { width: 92%; padding: 0 12px; }
            .hero-content h1 { font-size: clamp(1.8rem, 8vw, 2.6rem); }
            .hero-content p { font-size: 0.95rem; }
            .about-main { padding: 0 4px; }
            .about-values { grid-template-columns: 1fr 1fr; }
            .founder-layout { grid-template-columns: 1fr; text-align: center; }
            .founder-avatar { margin: 0 auto 24px; width: 180px; height: 180px; font-size: 3rem; }
            .founder-highlights { grid-template-columns: 1fr; }
            .mentor-list .founder-layout { grid-template-columns: 1fr; text-align: center; margin-top: 40px; align-items: center; }
            .mentor-list .founder-avatar { margin: 0 auto 20px; width: 140px; height: 140px; font-size: 2.2rem; }
            .age-timeline { grid-template-columns: 1fr 1fr; gap: 16px; }
            .age-timeline::before { display: none; }
            .age-circle { width: 80px; height: 80px; }
            .journey-step::after { display: none; }
            .contact-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
            .case-journey { grid-template-columns: 1fr 1fr; }
            .product-tabs { gap: 8px; }
            .product-tab { padding: 8px 16px; font-size: 0.85rem; }
        @media (max-width: 768px) {
            .hero { display: none !important; }
            .product-hero-image { height: 200px; }
            .product-list { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
        }
        @media (max-width: 480px) {
            :root { --header-height: 64px; }
            .container { padding: 0 16px; }
            .section { padding: 48px 0; }
            .section-title { margin-bottom: 32px; }
            .hero { min-height: 420px; }
            .hero-content h1 { font-size: 1.7rem; line-height: 1.35; }
            .hero-content p { font-size: 0.9rem; margin-bottom: 24px; }
            .hero-tagline { font-size: 0.9rem; letter-spacing: 0.2em; }
            .brand-banner { padding: calc(var(--header-height) + 32px) 0 40px; }
            .brand-banner h2 { font-size: 1.2rem; }
            .brand-banner p { font-size: 0.92rem; }
            .stat-num { font-size: 1.6rem; }
            .adv-grid { grid-template-columns: 1fr; }
            .age-timeline { grid-template-columns: 1fr; }
            .age-circle { width: 80px; height: 80px; }
            .case-journey { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr; }
            .about-values { grid-template-columns: 1fr; }
            .value-card { padding: 16px 18px; }
            .product-list { grid-template-columns: 1fr; }
            .product-tab { padding: 8px 12px; font-size: 0.8rem; }
            .product-hero-image { height: 160px; }
            .product-header h3 { font-size: 1.25rem; }
            .product-item { padding: 22px 18px; }
            .case-card { padding: 28px 20px; }
            .contact-card { padding: 18px 20px; }
            .contact-form-wrap { padding: 24px 20px; }
            .header-logo img { height: 36px; }
            .brand-banner .brand-row { flex-direction: column; gap: 20px; padding: 0 20px; }
            .brand-banner .brand-side { justify-content: center !important; }
            .brand-banner .brand-side.right a { font-size: 0.85rem; padding: 5px 10px; }
            .record-card img { height: 180px; }
            .record-wide img { height: 180px; }
            .news-card { padding: 18px; }
            .nd-day { font-size: 1.5rem; }
        }
    
        /* ========== Multi-page additions ========== */
        .page-hero {
            background: linear-gradient(180deg, var(--brand-dark), var(--brand-primary));
            color: #fff; text-align: center;
            padding: calc(var(--header-height) + 56px) 0 56px;
            position: relative; overflow: hidden;
        }
        .page-hero::before {
            content: ''; position: absolute; top: -80px; right: -120px;
            width: 360px; height: 360px; border-radius: 50%;
            background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
            pointer-events: none;
        }
        .page-hero .container { position: relative; z-index: 1; }
        .page-hero .section-label { color: rgba(255,255,255,0.85); }
        .page-hero h1 { color: #fff; margin-bottom: 12px; }
        .page-hero p { color: rgba(255,255,255,0.85); max-width: 680px; margin: 12px auto 0; font-size: 1.05rem; }
        .guide-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 24px; margin-top: 8px; }
        .guide-card { display: block; background: #fff; border: 1px solid var(--border-light); border-radius: var(--radius-md); padding: 28px 26px; transition: all .3s; box-shadow: var(--shadow-sm); }
        .guide-card:hover { box-shadow: var(--shadow-md); transform: translateY(-4px); border-color: transparent; }
        .guide-card .g-icon { font-size: 2rem; margin-bottom: 14px; }
        .guide-card h3 { font-size: 1.15rem; margin-bottom: 8px; color: var(--text-primary); }
        .guide-card p { font-size: 0.92rem; line-height: 1.7; margin-bottom: 14px; }
        .guide-card .g-link { font-size: 0.9rem; font-weight: 600; color: var(--brand-primary); }
        .guide-card .g-link:hover { color: var(--brand-dark); }
        main { display: block; padding-bottom: 3rem; }
        .section-spacer { height: 5rem; background: #ffffff; }