:root {
            --primary: #1B3A5C;
            --primary-light: #2A5A7A;
            --secondary: #2E8B9A;
            --secondary-light: #4AAEBF;
            --accent: #D4A843;
            --accent-light: #E8C56A;
            --bg: #F4F6F9;
            --bg-card: #FFFFFF;
            --bg-alt: #E9EDF2;
            --text: #1E2A3A;
            --text-light: #4A5A6A;
            --text-muted: #7A8A9A;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 16px 40px rgba(0, 0, 0, 0.10);
            --border: #E2E8F0;
            --font: 'Microsoft Sans Serif', 'Microsoft YaHei', 'PingFang SC', sans-serif;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }
        @media (max-width:768px) {
            .container {
                padding: 0 20px;
            }
        }

        /* topbar */
        .topbar {
            background: var(--primary);
            color: #fff;
            font-size: 0.85rem;
            padding: 8px 0;
            letter-spacing: 0.3px;
        }
        .topbar__inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px 16px;
        }
        .topbar__inner span {
            opacity: 0.92;
        }
        @media (max-width:640px) {
            .topbar__inner {
                justify-content: center;
                font-size: 0.78rem;
            }
        }

        /* header */
        .header {
            background: #fff;
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
        }
        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 14px 0;
            gap: 12px 24px;
        }
        .brand {
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .brand__mark {
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: #fff;
            font-weight: 700;
            flex-shrink: 0;
        }
        .brand__mark::after {
            content: "鸿";
            font-size: 1.2rem;
            font-weight: 700;
        }
        .brand__text {
            display: flex;
            flex-direction: column;
        }
        .brand__text strong {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.5px;
        }
        .brand__text span {
            font-size: 0.8rem;
            color: var(--text-light);
            letter-spacing: 0.3px;
        }
        .nav {
            display: flex;
            flex-wrap: wrap;
            gap: 6px 18px;
            align-items: center;
        }
        .nav a {
            text-decoration: none;
            color: var(--text-light);
            font-size: 0.92rem;
            font-weight: 500;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav a:hover {
            color: var(--primary);
            border-bottom-color: var(--accent);
        }
        .nav a.nav-about {
            color: var(--primary);
            font-weight: 600;
        }
        .nav a.nav-about:hover {
            border-bottom-color: var(--primary);
        }
        @media (max-width:768px) {
            .header__inner {
                flex-direction: column;
                align-items: stretch;
                padding: 12px 0;
            }
            .brand {
                justify-content: center;
            }
            .nav {
                justify-content: center;
                gap: 4px 14px;
                flex-wrap: wrap;
            }
            .nav a {
                font-size: 0.85rem;
            }
        }

        /* hero */
        .hero {
            background: linear-gradient(145deg, #EAF0F6 0%, #D6E4ED 100%);
            padding: 80px 0 90px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(43, 139, 154, 0.10) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -20%;
            left: -5%;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(212, 168, 67, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-copy .eyebrow {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 20px;
        }
        .hero-copy h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.18;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .hero-copy h1 span {
            color: var(--secondary);
        }
        .hero-copy>p {
            font-size: 1.1rem;
            color: var(--text-light);
            max-width: 540px;
            margin-bottom: 24px;
            line-height: 1.6;
        }
        .chip-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 16px;
        }
        .chip-row .chip {
            background: rgba(27, 58, 92, 0.08);
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 0.82rem;
            color: var(--primary);
            font-weight: 500;
            border: 1px solid rgba(27, 58, 92, 0.12);
        }
        .chip-row .chip-accent {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .hero-panel {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 28px;
            box-shadow: var(--shadow-hover);
            border: 1px solid var(--border);
        }
        .metric-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 18px;
            margin-bottom: 24px;
        }
        .metric-item {
            text-align: center;
            padding: 12px 6px;
            background: var(--bg);
            border-radius: var(--radius-sm);
        }
        .metric-item .num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--primary);
        }
        .metric-item .label {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 2px;
        }
        .hero-contact {
            border-top: 1px solid var(--border);
            padding-top: 20px;
            text-align: center;
        }
        .hero-contact strong {
            display: block;
            font-size: 1rem;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .hero-contact a {
            display: inline-block;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--secondary);
            text-decoration: none;
            margin-bottom: 8px;
            letter-spacing: 0.5px;
        }
        .hero-contact a:hover {
            color: var(--primary-light);
        }
        .hero-contact p {
            font-size: 0.88rem;
            color: var(--text-muted);
            line-height: 1.5;
            max-width: 360px;
            margin: 0 auto;
        }
        .hero-contact .region-text {
            font-size: 0.85rem;
            color: var(--text-light);
            background: var(--bg-alt);
            padding: 10px 16px;
            border-radius: var(--radius-sm);
            margin-top: 12px;
            line-height: 1.5;
        }
        @media (max-width:1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-copy h1 {
                font-size: 2.2rem;
            }
            .hero {
                padding: 48px 0 56px;
            }
        }
        @media (max-width:640px) {
            .hero-copy h1 {
                font-size: 1.8rem;
            }
            .metric-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .hero-panel {
                padding: 20px 16px;
            }
        }

        /* section */
        .section {
            padding: 72px 0;
        }
        .section-head {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.3px;
        }
        .section-head span {
            display: block;
            font-size: 0.9rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-top: 6px;
        }
        .section-head h2::after {
            content: '';
            display: block;
            width: 60px;
            height: 4px;
            background: var(--accent);
            margin: 14px auto 0;
            border-radius: 4px;
        }
        @media (max-width:640px) {
            .section {
                padding: 48px 0;
            }
            .section-head h2 {
                font-size: 1.6rem;
            }
        }

        /* about */
        .surface-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 40px 36px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .about-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .about-copy p {
            margin-bottom: 16px;
            color: var(--text-light);
            font-size: 0.95rem;
            line-height: 1.7;
        }
        .about-copy p strong {
            color: var(--primary);
        }
        .about-figure {
            margin: 0;
        }
        .about-figure img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-sm);
            box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
            display: block;
        }
        .about-figure figcaption {
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 10px;
            font-style: italic;
        }
        .about-cta {
            margin-top: 20px;
            display: inline-block;
            background: var(--primary);
            color: #fff;
            padding: 10px 28px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            transition: 0.2s;
        }
        .about-cta:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        @media (max-width:900px) {
            .about-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .surface-card {
                padding: 24px 20px;
            }
        }

        /* strengths */
        .strength-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .strength-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 24px 28px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: 0.25s;
            text-align: center;
        }
        .strength-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: var(--secondary-light);
        }
        .strength-card .icon {
            font-size: 2.4rem;
            margin-bottom: 16px;
            display: block;
        }
        .strength-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 10px;
        }
        .strength-card p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
        }
        @media (max-width:1024px) {
            .strength-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width:640px) {
            .strength-grid {
                grid-template-columns: 1fr;
            }
        }

        /* gallery */
        .gallery-group {
            margin-bottom: 48px;
        }
        .gallery-group:last-child {
            margin-bottom: 0;
        }
        .gallery-group h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 24px;
            padding-left: 12px;
            border-left: 4px solid var(--accent);
        }
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .gallery-card {
            background: #fff;
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
            transition: 0.2s;
        }
        .gallery-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .gallery-card img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
            display: block;
            background: var(--bg-alt);
        }
        .gallery-card p {
            padding: 10px 12px 14px;
            font-size: 0.85rem;
            color: var(--text-light);
            font-weight: 500;
            line-height: 1.4;
            min-height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: center;
        }
        @media (max-width:1024px) {
            .gallery-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width:768px) {
            .gallery-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width:480px) {
            .gallery-grid {
                grid-template-columns: 1fr;
            }
        }

        /* faq */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            padding: 24px 22px;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .faq-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .faq-item h4::before {
            content: 'Q';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 26px;
            height: 26px;
            background: var(--accent);
            color: #fff;
            border-radius: 50%;
            font-size: 0.8rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-light);
            line-height: 1.6;
            padding-left: 34px;
        }
        @media (max-width:768px) {
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }

        /* contact / cta */
        .cta-panel {
            background: linear-gradient(135deg, var(--primary) 0%, #1F4A6A 100%);
            border-radius: var(--radius);
            padding: 48px 40px;
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 40px;
            align-items: center;
            color: #fff;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
        }
        .cta-copy .eyebrow {
            display: inline-block;
            background: var(--accent);
            padding: 4px 18px;
            border-radius: 30px;
            font-size: 0.8rem;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
        }
        .cta-copy h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
        }
        .cta-copy>p {
            font-size: 1rem;
            opacity: 0.9;
            margin-bottom: 20px;
            line-height: 1.6;
        }
        .contact-list {
            list-style: none;
            padding: 0;
        }
        .contact-list li {
            padding: 6px 0;
            font-size: 0.95rem;
            opacity: 0.92;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .contact-list li::before {
            content: '›';
            font-size: 1.2rem;
            color: var(--accent);
            font-weight: 700;
        }
        .cta-contact {
            background: rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-sm);
            padding: 28px 24px;
            text-align: center;
            backdrop-filter: blur(4px);
        }
        .cta-contact strong {
            display: block;
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
            color: #fff;
        }
        .cta-contact a {
            display: inline-block;
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-light);
            text-decoration: none;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .cta-contact a:hover {
            color: #fff;
        }
        .cta-contact .region-text {
            font-size: 0.85rem;
            opacity: 0.85;
            line-height: 1.5;
            margin-top: 12px;
            padding: 10px 14px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: var(--radius-sm);
        }
        .cta-contact__meta {
            display: flex;
            justify-content: center;
            gap: 32px;
            margin-top: 16px;
            flex-wrap: wrap;
        }
        .cta-contact__meta div {
            text-align: center;
        }
        .cta-contact__meta span {
            display: block;
            font-size: 0.75rem;
            opacity: 0.7;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .cta-contact__meta strong {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--accent-light);
        }
        .cta-about-link {
            display: inline-block;
            margin-top: 16px;
            color: var(--accent-light);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            border-bottom: 1px solid var(--accent-light);
            padding-bottom: 2px;
        }
        .cta-about-link:hover {
            color: #fff;
            border-color: #fff;
        }
        @media (max-width:900px) {
            .cta-panel {
                grid-template-columns: 1fr;
                padding: 32px 24px;
                gap: 28px;
            }
            .cta-copy h2 {
                font-size: 1.5rem;
            }
            .cta-contact a {
                font-size: 1.5rem;
            }
        }

        /* footer */
        .footer {
            background: #0F1F2E;
            color: #BDC8D4;
            padding: 40px 0 32px;
            margin-top: 0;
        }
        .footer__inner {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .footer-copy p {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.85;
            max-width: 800px;
        }
        .footer-copy p strong {
            color: #fff;
            opacity: 1;
        }
        .friend-links-row {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 24px;
            margin-top: 8px;
        }
        .friend-links {
            width: 100%;
        }
        .friend-links__inner {
            display: flex;
            flex-wrap: wrap;
            gap: 12px 28px;
            justify-content: center;
            font-size: 0.82rem;
        }
        .friend-links__inner a {
            color: #8FA8B8;
            text-decoration: none;
            transition: 0.2s;
            padding: 2px 0;
        }
        .friend-links__inner a:hover {
            color: #fff;
            text-decoration: underline;
        }
        @media (max-width:640px) {
            .footer {
                padding: 28px 0 24px;
            }
            .footer-copy p {
                font-size: 0.82rem;
            }
        }

        /* mobile call btn */
        .mobile-call-btn {
            position: fixed;
            bottom: 28px;
            right: 28px;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.25);
            z-index: 1100;
            text-decoration: none;
            transition: 0.2s;
        }
        .mobile-call-btn:hover {
            background: var(--primary-light);
            transform: scale(1.05);
        }
        @media (min-width:768px) {
            .mobile-call-btn {
                display: none;
            }
        }

        /* region text utility */
        .region-text {
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* fade-up */
        .fade-up {
            animation: fadeUp 0.7s ease-out forwards;
        }
        @keyframes fadeUp {
            0% {
                opacity: 0;
                transform: translateY(20px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .delay-1 {
            animation-delay: 0.1s;
        }
        .delay-2 {
            animation-delay: 0.2s;
        }
        .delay-3 {
            animation-delay: 0.3s;
        }
    

.friend-links-row{display:block !important;width:100%;margin:18px 0 0;clear:both;}
.friend-links{display:block !important;width:100%;box-sizing:border-box;}
.friend-links__inner{display:flex;flex-wrap:wrap;align-items:center;gap:6px 12px;width:100%;}
.friend-links__inner a{display:inline-block;font-size:12px;line-height:1.6;padding:0;color:inherit;text-decoration:none;opacity:.88;}
.friend-links__inner a:hover{text-decoration:underline;opacity:1;}
@media (max-width: 768px){
  .friend-links-row{margin-top:14px;}
  .friend-links__inner{gap:5px 10px;}
  .friend-links__inner a{font-size:11px;line-height:1.7;}
}