@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');
        body { font-family: 'Inter', 'Microsoft YaHei', sans-serif; scroll-behavior: smooth; }
        .hero-bg { background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%); }
        .site-brand { text-decoration: none; }
        .site-emblem {
            flex-shrink: 0;
            height: 2.35rem;
            width: auto;
            max-width: 7.5rem;
            object-fit: contain;
        }
        @media (min-width: 640px) {
            .site-emblem { height: 2.65rem; max-width: 8.75rem; }
        }
        .site-logo { flex-shrink: 0; filter: drop-shadow(0 2px 6px rgba(14, 165, 233, 0.35)); transition: transform 0.25s ease; }
        .site-brand:hover .site-logo { transform: scale(1.06) rotate(-2deg); }
        .site-name {
            background: linear-gradient(120deg, #0f172a 0%, #0369a1 42%, #0ea5e9 58%, #0f172a 100%);
            background-size: 200% auto;
            -webkit-background-clip: text; background-clip: text; color: transparent;
            letter-spacing: 0.04em; line-height: 1.2;
            min-width: 0;
            font-size: 1.125rem;
        }
        @media (min-width: 640px) {
            .site-name {
                font-size: 1.25rem;
            }
        }
        .site-name-short {
            display: none;
        }
        body.lang-en .site-name-full {
            display: none;
        }
        body.lang-en .site-name-short {
            display: none;
        }
        @media (max-width: 1023px) {
            body.lang-en .site-name-short {
                display: inline-flex;
                flex: 1 1 auto;
                align-items: center;
                justify-content: center;
                min-width: 0;
                font-size: 1.15rem;
                letter-spacing: 0.08em;
                white-space: nowrap;
                line-height: 1;
                position: static;
                transform: none;
            }
            body.lang-en .site-brand {
                flex: 0 0 auto;
                margin-right: 0;
            }
        }
        @media (min-width: 640px) and (max-width: 1023px) {
            body.lang-en .site-name-short {
                font-size: 1.25rem;
            }
        }
        @media (min-width: 1024px) {
            body.lang-en .site-name-full {
                display: inline;
                font-size: 0.95rem;
                letter-spacing: 0;
                white-space: nowrap;
            }
            body.lang-en .site-name-short {
                display: none;
            }
        }
        @media (min-width: 1280px) {
            body.lang-en .site-name-full {
                font-size: 1.05rem;
            }
        }
        body.lang-en nav > div {
            padding-left: 0.75rem;
        }
        @media (min-width: 640px) {
            body.lang-en nav > div {
                padding-left: 1rem;
            }
        }
        @media (min-width: 1024px) {
            body.lang-en nav > div {
                padding-left: 1.25rem;
            }
        }
        body.lang-en .site-brand {
            gap: 0.45rem;
        }
        body.lang-en .site-emblem {
            max-width: 6.25rem;
        }
        .page-hero-title {
            background: linear-gradient(135deg, #ffffff 0%, #bae6fd 50%, #ffffff 100%);
            -webkit-background-clip: text; background-clip: text; color: transparent;
        }
        .footer-brand {
            background: linear-gradient(90deg, #ffffff, #7dd3fc, #ffffff);
            background-size: 200% auto;
            -webkit-background-clip: text; background-clip: text; color: transparent;
        }
        .mobile-drawer { position: fixed; top: 0; right: 0; bottom: 0; width: 80vw; max-width: 320px; background: #fff; z-index: 60; transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.4,0,0.2,1); box-shadow: -10px 0 30px rgba(0,0,0,0.1); display: flex; flex-direction: column; }
        .mobile-drawer.open { transform: translateX(0); }
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 55; opacity: 0; visibility: hidden; transition: all 0.3s; }
        .drawer-overlay.open { opacity: 1; visibility: visible; }
        .lightbox { position: fixed; inset: 0; z-index: 100; background: rgba(0,0,0,0.9); display: none; align-items: center; justify-content: center; padding: 1rem; }
        .lightbox.open { display: flex; }
        .lightbox img { max-width: 95vw; max-height: 90vh; object-fit: contain; }
        .zoomable { cursor: zoom-in; }
        .section-card { background: #fff; border: 1px solid #f1f5f9; border-radius: 1rem; box-shadow: 0 1px 3px rgba(15,23,42,0.04); }
        .contact-page {
            min-height: calc(100vh - 8rem);
            background: #f8fafc;
        }
        .contact-card {
            display: flex;
            gap: 1rem;
            align-items: flex-start;
            padding: 1.35rem 1.4rem;
            border-radius: 1.15rem;
            background: #ffffff;
            border: 1px solid #e2e8f0;
            box-shadow: 0 8px 24px -18px rgba(15, 23, 42, 0.35);
            transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
            min-height: 7.25rem;
        }
        .contact-card:hover {
            transform: translateY(-2px);
            border-color: rgba(14, 165, 233, 0.35);
            box-shadow: 0 14px 28px -18px rgba(14, 165, 233, 0.45);
        }
        .contact-card-icon {
            flex-shrink: 0;
            width: 2.75rem;
            height: 2.75rem;
            border-radius: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0ea5e9;
            background: rgba(14, 165, 233, 0.1);
        }
        .contact-card-label {
            font-size: 0.75rem;
            color: #94a3b8;
            margin-bottom: 0.4rem;
            letter-spacing: 0.04em;
        }
        .contact-card-value {
            font-size: 0.98rem;
            color: #334155;
            line-height: 1.65;
            font-weight: 600;
        }
        .contact-item { display: flex; gap: 1rem; align-items: flex-start; padding: 1rem 1.25rem; border-radius: 0.75rem; background: #f8fafc; border: 1px solid #e2e8f0; }
        .back-to-top { opacity: 0; visibility: hidden; transform: translateY(8px); transition: all 0.25s ease; }
        .back-to-top.show { opacity: 1; visibility: visible; transform: translateY(0); }
        .back-to-top-btn {
            width: 3.25rem; height: 3.25rem; border-radius: 9999px;
            background: linear-gradient(135deg, #0ea5e9 0%, #0284c7 100%);
            border: 1px solid rgba(255,255,255,0.25);
            box-shadow: 0 12px 26px -10px rgba(14,165,233,0.8);
        }
        .back-to-top-btn:hover { transform: translateY(-2px) scale(1.04); }
        .back-to-top-label { font-size: 10px; font-weight: 700; margin-top: -2px; }
        .nav-active { color: #0ea5e9 !important; font-weight: 700; }
        .nav-link.nav-active { position: relative; }
        .nav-link.nav-active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -6px;
            height: 2px;
            background: #0ea5e9;
            border-radius: 1px;
        }
        .paragraph-indent { text-indent: 2em; }