:root {
            --fudan-red: #8B1A1A;
            --fudan-red-light: #B22222;
            --fudan-gold: #C9A96E;
            --fudan-gold-light: #E8D5A3;
            --fudan-blue: #1A2B4A;
            --fudan-blue-light: #2C3E6B;
            --text-dark: #1A1A1A;
            --text-gray: #666;
            --text-light: #999;
            --bg-light: #F8F6F1;
            --bg-cream: #FDFBF7;
            --white: #FFFFFF;
            /* 导航栏高度变量，方便全局统一引用 */
            --nav-height: 98px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
            color: var(--text-dark);
            line-height: 1.8;
            overflow-x: hidden;
            background: var(--bg-cream);
            /* 给 body 顶部预留导航栏空间，防止页面加载时内容被遮挡 */
            padding-top: var(--nav-height);
        }

        /* ===== 导航栏 ===== */
        .navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgb(176, 31, 36);
            backdrop-filter: blur(20px);
            transition: all 0.3s ease;
            border-bottom: 1px solid rgba(201, 169, 110, 0.2);
        }

        .navbar.scrolled {
            background: rgb(176, 31, 36);
            box-shadow: 0 4px 30px rgba(0,0,0,0.15);
        }

        .nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
        }

        .nav-brand-icon {
            width: 171px;
            height: 90px;
            
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--fudan-gold);
            font-family: 'Noto Serif SC', serif;
            font-size: 20px;
            font-weight: 900;
            
        }
        .nav-brand-icon img {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
        }

        .nav-brand-text {
            color: var(--white);
            line-height: 0.1;
        }

        .nav-brand-text .brand-main {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 2px;
            line-height: 1.2;
        }

        .nav-brand-text .brand-sub {
            font-size: 11px;
            color: var(--white);
            letter-spacing: 1px;
            margin-top: 11px;
            font-size: 16px;
            white-space: nowrap;
            display: inline-block;
            width: 100%;              /* 撑满与 brand-main 同宽 */
            text-align: justify;      /* 两端对齐 */
            text-align-last: justify;
        line-height: 1;}

        .nav-links {
            display: flex;
            gap: 36px;
            list-style: none;
        }

        .nav-links a {
            color: rgba(255,255,255,0.85);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
            padding: 4px 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--fudan-gold);
            transition: width 0.3s;
        }

        .nav-links a:hover {
            color: var(--fudan-gold);
        }

        .nav-links a:hover::after {
            width: 100%;
        }

        .nav-cta {
            background: rgb(0, 51, 153);
            color: var(--white);
            padding: 10px 28px;
            border-radius: 6px;
            text-decoration: none;
            font-size: 14px;
            font-weight: 600;
            transition: all 0.3s;
            border: 1px solid var(--fudan-red);
        }

        .nav-cta:hover {
            background: transparent;
            color: var(--fudan-gold);
            border-color: var(--fudan-gold);
        }

        /* ===== 首屏 Hero ===== */
        .hero {
            /* 使用 min-height: 100vh 让首屏撑满视口，内容自然居中 */
            min-height: calc(70vh - var(--nav-height));
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
            background: var(--fudan-blue);
            /* 当通过锚点跳转时，scroll-margin-top 让目标区域顶部留出导航栏高度 */
            scroll-margin-top: var(--nav-height);
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background: 
                radial-gradient(ellipse at 20% 50%, rgba(139, 26, 26, 0.4) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(201, 169, 110, 0.15) 0%, transparent 40%),
                linear-gradient(135deg, var(--fudan-blue) 0%, var(--fudan-blue-light) 50%, #0F1A2E 100%);
        }

        .hero-pattern {
            position: absolute;
            inset: 0;
            opacity: 0.04;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        }

        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 1000px;
            /* 去掉固定 padding-top，改用更灵活的间距 */
            padding: 40px 40px 80px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: rgba(201, 169, 110, 0.15);
            border: 1px solid rgba(201, 169, 110, 0.3);
            padding: 10px 24px;
            border-radius: 50px;
            margin-bottom: 36px;
            animation: fadeInDown 1s ease;
        }

        .hero-badge-dot {
            width: 8px;
            height: 8px;
            background: #ffffff;
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

        .hero-badge-text {
            color: #ffffff;
            font-size: 14px;
            letter-spacing: 3px;
        }

        .hero-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 56px;
            font-weight: 900;
            color: var(--white);
            line-height: 1.3;
            margin-bottom: 20px;
            text-shadow: 0 4px 30px rgba(0,0,0,0.3);
            animation: fadeInUp 1s ease 0.2s both;
        }

        .hero-title .highlight {
            color: var(--fudan-gold);
            position: relative;
        }

        .hero-subtitle {
            font-size: 22px;
            color: rgba(255,255,255,0.75);
            margin-bottom: 16px;
            font-weight: 300;
            letter-spacing: 4px;
            animation: fadeInUp 1s ease 0.4s both;
        }

        .hero-motto {
            font-family: 'Noto Serif SC', serif;
            font-size: 18px;
            color: var(--fudan-gold);
            letter-spacing: 6px;
            margin-bottom: 48px;
            animation: fadeInUp 1s ease 0.6s both;
        }

        .hero-cta-group {
            display: flex;
            gap: 20px;
            justify-content: center;
            animation: fadeInUp 1s ease 0.8s both;
        }

        .btn-primary {
            background: var(--fudan-red);
            color: var(--white);
            padding: 16px 44px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s;
            border: 2px solid var(--fudan-red);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            background: transparent;
            color: var(--fudan-gold);
            border-color: var(--fudan-gold);
            transform: translateY(-2px);
            box-shadow: 0 10px 40px rgba(201, 169, 110, 0.2);
        }

        .btn-secondary {
            background: transparent;
            color: var(--white);
            padding: 16px 44px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s;
            border: 2px solid rgba(255,255,255,0.3);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary:hover {
            border-color: var(--fudan-gold);
            color: var(--fudan-gold);
            transform: translateY(-2px);
        }

        .hero-scroll {
            position: absolute;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255,255,255,0.5);
            font-size: 12px;
            letter-spacing: 2px;
            animation: bounce 2s infinite;
            cursor: pointer;
        }

        /* ===== 核心数据 ===== */
        .stats-section {
            background: var(--white);
            padding: 80px 0;
            position: relative;
            scroll-margin-top: var(--nav-height);
        }

        .stats-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--fudan-red), var(--fudan-gold), var(--fudan-red));
        }

        .stats-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
        }

        .stat-item {
            text-align: center;
            padding: 30px 20px;
            position: relative;
        }

        .stat-item:not(:last-child)::after {
            content: '';
            position: absolute;
            right: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 1px;
            height: 60px;
            background: linear-gradient(to bottom, transparent, var(--fudan-gold), transparent);
        }

        .stat-number {
            font-family: 'Noto Serif SC', serif;
            font-size: 48px;
            font-weight: 900;
            color: var(--fudan-red);
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-number .suffix {
            font-size: 28px;
            color: var(--fudan-gold);
        }

        .stat-label {
            font-size: 15px;
            color: var(--text-gray);
            font-weight: 500;
        }

        .stat-desc {
            font-size: 13px;
            color: var(--text-light);
            margin-top: 6px;
        }

        /* ===== 品牌背书 ===== */
        .authority-section {
            background: var(--bg-light);
            padding: 100px 0;
            scroll-margin-top: var(--nav-height);
        }

        .section-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .section-tag {
            display: inline-block;
            color: var(--fudan-red);
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 3px;
            margin-bottom: 12px;
            text-transform: uppercase;
        }

        .section-title {
            font-family: 'Noto Serif SC', serif;
            font-size: 40px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .section-subtitle {
            font-size: 18px;
            color: var(--text-gray);
            max-width: 600px;
            margin: 0 auto;
        }

        .authority-grid {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .authority-card {
            background: var(--white);
            border-radius: 16px;
            padding: 40px 32px;
            text-align: center;
            transition: all 0.4s;
            border: 1px solid rgba(0,0,0,0.05);
            position: relative;
            overflow: hidden;
        }

        .authority-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: var(--fudan-red);
            transform: scaleX(0);
            transition: transform 0.4s;
        }

        .authority-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 60px rgba(0,0,0,0.08);
        }

        .authority-card:hover::before {
            transform: scaleX(1);
        }

        .authority-icon {
            width: 72px;
            height: 72px;
            background: linear-gradient(135deg, var(--fudan-red), var(--fudan-red-light));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            color: var(--white);
            font-size: 28px;
        }

        .authority-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-dark);
        }

        .authority-card p {
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.8;
        }

        /* ===== 培训体系 ===== */
        .training-section {
            background: var(--white);
            padding: 100px 0;
            scroll-margin-top: var(--nav-height);
        }

        .training-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .training-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 60px;
        }

        .training-card {
            background: var(--bg-cream);
            border-radius: 16px;
            padding: 0;
            overflow: hidden;
            transition: all 0.4s;
            border: 1px solid rgba(0,0,0,0.04);
        }

        .training-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 50px rgba(0,0,0,0.08);
        }

        .training-card-header {
            padding: 32px 28px 24px;
            position: relative;
        }

        .training-card:nth-child(1) .training-card-header {
            background: linear-gradient(135deg, var(--fudan-red), #A52A2A);
        }

        .training-card:nth-child(2) .training-card-header {
            background: linear-gradient(135deg, var(--fudan-blue), var(--fudan-blue-light));
        }

        .training-card:nth-child(3) .training-card-header {
            background: linear-gradient(135deg, #2D5A3D, #3D7A4D);
        }

        .training-card-header h3 {
            color: var(--white);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .training-card-header .en {
            color: rgba(255,255,255,0.7);
            font-size: 12px;
            letter-spacing: 2px;
            text-transform: uppercase;
        }

        .training-card-body {
            padding: 28px;
        }

        .training-card-body ul {
            list-style: none;
        }

        .training-card-body li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            font-size: 15px;
            color: var(--text-gray);
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }

        .training-card-body li:last-child {
            border-bottom: none;
        }

        .training-card-body li::before {
            content: '◆';
            color: var(--fudan-gold);
            font-size: 10px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== 培训对象 ===== */
        .audience-section {
            background: linear-gradient(135deg, rgb(0, 51, 153) 0%, rgb(0, 51, 153) 100%);
            padding: 100px 0;
            position: relative;
            overflow: hidden;
            scroll-margin-top: var(--nav-height);
        }

        .audience-section .section-title,
        .audience-section .section-subtitle {
            color: var(--white);
        }

        .audience-section .section-tag {
            color: var(--fudan-gold);
        }

        .audience-grid {
            max-width: 1200px;
            margin: 60px auto 0;
            padding: 0 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .audience-card {
            background: rgba(255,255,255,0.06);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(201, 169, 110, 0.2);
            border-radius: 12px;
            padding: 32px 24px;
            text-align: center;
            transition: all 0.4s;
        }

        .audience-card:hover {
            background: rgba(255,255,255,0.1);
            border-color: var(--fudan-gold);
            transform: translateY(-4px);
        }

        .audience-icon {
            width: 56px;
            height: 56px;
            background: rgba(201, 169, 110, 0.15);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            color: var(--fudan-gold);
            font-size: 24px;
        }

        .audience-card h4 {
            color: var(--white);
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .audience-card p {
            color: rgba(255,255,255,255);
            font-size: 13px;
            line-height: 1.7;
        }

        /* ===== 师资阵容 ===== */
        .faculty-section {
            background: var(--bg-light);
            padding: 100px 0;
            scroll-margin-top: var(--nav-height);
        }

        .faculty-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .faculty-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-top: 60px;
        }

        .faculty-card {
            background: var(--white);
            border-radius: 16px;
            padding: 36px 28px;
            transition: all 0.4s;
            border: 1px solid rgba(0,0,0,0.05);
            position: relative;
        }

        .faculty-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 50px rgba(0,0,0,0.08);
        }

        .faculty-card .number {
            position: absolute;
            top: 20px;
            right: 24px;
            font-family: 'Noto Serif SC', serif;
            font-size: 48px;
            font-weight: 900;
            color: rgba(139, 26, 26, 0.06);
            line-height: 1;
        }

        .faculty-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
            padding-right: 50px;
        }

        .faculty-card p {
            font-size: 15px;
            color: var(--text-gray);
            line-height: 1.8;
        }

        .faculty-card .tag {
            display: inline-block;
            background: rgba(139, 26, 26, 0.08);
            color: var(--fudan-red);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-top: 16px;
        }

        /* ===== 培训形式 ===== */
        .method-section {
            background: var(--white);
            padding: 100px 0;
            scroll-margin-top: var(--nav-height);
        }

        .method-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .method-timeline {
            display: flex;
            justify-content: space-between;
            margin-top: 60px;
            position: relative;
        }

        .method-timeline::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 10%;
            right: 10%;
            height: 2px;
            background: linear-gradient(90deg, var(--fudan-red), var(--fudan-gold), var(--fudan-red));
        }

        .method-item {
            text-align: center;
            width: 18%;
            position: relative;
            z-index: 1;
        }

        .method-circle {
            width: 72px;
            height: 72px;
            background: var(--white);
            border: 3px solid var(--fudan-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 24px;
            color: var(--fudan-red);
            box-shadow: 0 4px 20px rgba(201, 169, 110, 0.2);
            transition: all 0.3s;
        }

        .method-item:hover .method-circle {
            background: var(--fudan-red);
            color: var(--white);
            border-color: var(--fudan-red);
            transform: scale(1.1);
        }

        .method-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 8px;
        }

        .method-item p {
            font-size: 13px;
            color: var(--text-gray);
            line-height: 1.6;
        }

        /* ===== 成功案例 ===== */
        .cases-section {
            background: linear-gradient(135deg, rgb(0, 51, 153) 0%, rgb(0, 51, 153) 100%);
            padding: 100px 0;
            scroll-margin-top: var(--nav-height);
        }

        .cases-section .section-title,
        .cases-section .section-subtitle {
            color: var(--white);
        }

        .cases-section .section-tag {
            color: var(--fudan-gold);
        }

        .cases-container {
            max-width: 1200px;
            margin: 60px auto 0;
            padding: 0 40px;
        }

        .cases-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .case-card {
            background: rgba(255,255,255,0.05);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(201, 169, 110, 0.15);
            border-radius: 12px;
            padding: 28px;
            transition: all 0.4s;
        }

        .case-card:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--fudan-gold);
        }

        .case-card .case-tag {
            display: inline-block;
            background: rgba(201, 169, 110, 0.2);
            color: var(--fudan-gold);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .case-card h4 {
            color: var(--white);
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .case-card p {
            color: rgba(255,255,255,0.6);
            font-size: 14px;
            line-height: 1.7;
        }

        .case-card .case-meta {
            display: flex;
            gap: 20px;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        .case-meta span {
            color: rgba(255,255,255,0.5);
            font-size: 13px;
        }

        /* ===== 联系我们 ===== */
        .contact-section {
            background: var(--bg-light);
            padding: 100px 0;
            scroll-margin-top: var(--nav-height);
        }

        .contact-container {
            max-width: 1000px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .contact-card {
            background: var(--white);
            border-radius: 20px;
            padding: 60px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.06);
            text-align: center;
            border: 1px solid rgba(0,0,0,0.04);
        }

        .contact-card h2 {
            font-family: 'Noto Serif SC', serif;
            font-size: 36px;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

        .contact-card .contact-desc {
            font-size: 18px;
            color: var(--text-gray);
            margin-bottom: 40px;
        }

        .contact-info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }

        .contact-info-item {
            padding: 24px;
            background: var(--bg-cream);
            border-radius: 12px;
            transition: all 0.3s;
        }

        .contact-info-item:hover {
            background: var(--fudan-red);
            color: var(--white);
        }

        .contact-info-item:hover .info-label,
        .contact-info-item:hover .info-value {
            color: var(--white);
        }

        .contact-info-item .info-icon {
            font-size: 28px;
            margin-bottom: 12px;
        }

        .contact-info-item .info-label {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 6px;
            letter-spacing: 1px;
        }

        .contact-info-item .info-value {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
        }

        .contact-form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-bottom: 20px;
        }

        .contact-form input,
        .contact-form textarea,
        .contact-form select {
            width: 100%;
            padding: 16px 20px;
            border: 1px solid rgba(0,0,0,0.1);
            border-radius: 10px;
            font-size: 15px;
            font-family: inherit;
            background: var(--bg-cream);
            transition: all 0.3s;
            outline: none;
        }

        .contact-form input:focus,
        .contact-form textarea:focus,
        .contact-form select:focus {
            border-color: var(--fudan-red);
            box-shadow: 0 0 0 3px rgba(139, 26, 26, 0.1);
        }

        .contact-form textarea {
            min-height: 120px;
            resize: vertical;
            margin-bottom: 24px;
        }

        .contact-form .btn-submit {
            background: rgb(0, 51, 153);
            color: var(--white);
            padding: 18px 60px;
            border: none;
            border-radius: 10px;
            font-size: 17px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            font-family: inherit;
        }

        .contact-form .btn-submit:hover {
            background: var(--fudan-red-light);
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(139, 26, 26, 0.3);
        }

        /* ===== 页脚 ===== */
        .footer {
            background: rgb(176, 31, 36);
            color: rgba(255,255,255,0.6);
            padding: 60px 0 30px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .footer-logo {
            font-family: 'Noto Serif SC', serif;
            font-size: 22px;
            font-weight: 700;
            color: var(--white);
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255,255,255,0.5);
        }

        .footer-col h4 {
            color: var(--fudan-gold);
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 2px;
        }

        .footer-col ul {
            list-style: none;
        }

        .footer-col li {
            margin-bottom: 10px;
        }

        .footer-col a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .footer-col a:hover {
            color: var(--fudan-gold);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.4);
        }

        /* ===== 动画 ===== */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        @keyframes bounce {
            0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
            40% { transform: translateX(-50%) translateY(-10px); }
            60% { transform: translateX(-50%) translateY(-5px); }
        }

        /* ===== 滚动显示动画 ===== */
        .reveal {
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s ease;
        }

        .reveal.active {
            opacity: 1;
            transform: translateY(0);
        }


    /* ===== 悬浮联系按钮 ===== */
.float-contact {
  position: fixed;
  z-index: 999;
}

.float-btn {
  flex-direction: column;
  justify-content: center;
  width: 120px;
  padding: 6px 8px;
  background: rgb(176, 31, 36);
  color: #fff;
  text-decoration: none;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s;
  position: relative;
  text-align: center;
}

.float-btn:hover {
  background: rgb(0, 51, 153);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.float-icon {
  font-size: 22px;
  margin-bottom: 4px;
}

.float-label {
  font-size: 16px;
  white-space: nowrap;
}

/* 两个按钮之间的间距 */
.float-btn + .float-btn {
  margin-top: 10px;
}

/* ===== 微信二维码弹出层 ===== */
.wechat-qrcode {
  display: none;
  position: absolute;
  top: 50%;
  right: 125px;
  transform: translateY(-50%);
  background: #fff;
  border-radius: 10px;
  padding: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
  text-align: center;
  z-index: 1000;
}

.wechat-qrcode img {
  width: 150px;
  height: 150px;
  display: block;
}

.wechat-qrcode p {
  margin-top: 8px;
  font-size: 12px;
  color: #666;
}

/* 显示状态 */
.wechat-qrcode.active {
  display: block;
}


        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .stats-container { grid-template-columns: repeat(2, 1fr); }
            .authority-grid { grid-template-columns: repeat(2, 1fr); }
            .training-grid { grid-template-columns: repeat(2, 1fr); }
            .audience-grid { grid-template-columns: repeat(2, 1fr); }
            .faculty-grid { grid-template-columns: repeat(2, 1fr); }
            .cases-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }

        @media (max-width: 768px) {
            /* ===== 移动端导航栏整体 ===== */
            /* 动态计算移动端导航栏高度，用于后续 scroll-margin-top 和 padding */
            :root {
                --nav-height: 160px;
            }

            body {
                padding-top: var(--nav-height);
            }

            .nav-container {
                flex-direction: column;
                align-items: stretch;
                height: auto;
                padding: 6px 16px;
                gap: 10px;
            }

            /* Logo 居左 + 文字居右，同一行 */
            .nav-brand {
                display: flex;
                align-items: center;
                gap: 15px;
                text-decoration: none;
                width: 100%;
            }
            .nav-brand-icon {
                flex-shrink: 0;
                width: 114px;
                height: 60px;
            }
            .nav-brand-icon img {
                max-width: 100%;
                max-height: 100%;
                object-fit: contain;
            }
            .nav-brand-text {
                display: flex;
                flex-direction: column;
                justify-content: center;
                text-align: left;
                line-height: 1.3;
            }
            .nav-brand-text .brand-main {
                font-size: 14px;
                font-weight: 700;
                letter-spacing: 1px;
                color: var(--white);
                white-space: nowrap;
            }
            .nav-brand-text .brand-sub {
                font-size: 14px;
                color: #ffffff;
                letter-spacing: 7.5px;
                margin-top: 2px;
                white-space: nowrap;
            }

            /* 导航菜单：2行3列 */
            .nav-links {
                display: grid !important;
                grid-template-columns: repeat(5, 1fr);
                gap: 1px 8px;
                width: 100%;
                padding: 8px 0 4px;
                border-top: 1px solid rgba(201, 169, 110, 0.2);
                padding-top: 1px;
            }
            .nav-links li {
                text-align: center;
                margin: 0;
            }
            .nav-links a {
                font-size: 13px;
                padding: 6px 4px;
                display: block;
                color: rgba(255,255,255,0.85);
                white-space: nowrap;
            }
            .nav-links a::after {
                display: none;
            }

            /* 立即咨询按钮：居中 */
            .nav-cta {
                display: none;
            }

            /* ===== Hero 移动端适配 ===== */
            .hero {
                /* 移动端导航栏很高（约210px），hero 需要更大的最小高度 */
                min-height: calc(90vh - var(--nav-height));
                padding-top: 1px;
            }
            .hero-content {
                padding: 20px 20px 60px;
            }
            .hero-title { font-size: 32px; }
            .hero-subtitle { font-size: 16px; }
            .hero-cta-group { flex-direction: column; align-items: center; }
            
            /* ===== 移动端 stats-section 下 stat-item 改为 1行2列 ===== */
            .stats-container { 
                grid-template-columns: repeat(2, 1fr) !important; 
                gap: 20px !important;
                padding: 0 20px !important;
            }
            .stat-item {
                padding: 20px 10px !important;
            }
            .stat-item:not(:last-child)::after { 
                display: none; 
            }
            /* 第1个和第2个之间加竖线分隔 */
            .stat-item:nth-child(1)::after {
                content: '';
                display: block !important;
                position: absolute;
                right: 0;
                top: 50%;
                transform: translateY(-50%);
                width: 1px;
                height: 60px;
                background: linear-gradient(to bottom, transparent, var(--fudan-gold), transparent);
            }
            /* 第3个和第4个之间加竖线分隔 */
            .stat-item:nth-child(3)::after {
                content: '';
                display: block !important;
                position: absolute;
                right: 0;
                top: 50%;
                transform: translateY(-50%);
                width: 1px;
                height: 60px;
                background: linear-gradient(to bottom, transparent, var(--fudan-gold), transparent);
            }
            /* 第2个和第3个之间加横线分隔（跨行） */
            .stat-item:nth-child(1),
            .stat-item:nth-child(2) {
                border-bottom: 1px solid rgba(201, 169, 110, 0.2);
                padding-bottom: 30px !important;
                margin-bottom: 10px;
            }
            .stat-number {
                font-size: 36px !important;
            }
            .stat-number .suffix {
                font-size: 20px !important;
            }

            .authority-grid { grid-template-columns: 1fr; }
            .training-grid { grid-template-columns: 1fr; }
            .audience-grid { grid-template-columns: 1fr; }
            .faculty-grid { grid-template-columns: 1fr; }
            .stats-section {padding: 40px 0;}
            .authority-section{padding: 40px 0;}
            .training-section {padding: 40px 0;}
            .audience-section {padding: 40px 0;}
            .faculty-section {padding: 40px 0;}
            .method-section {padding: 100px 0;}
            .cases-section {padding: 40px 0;}
            .contact-section {padding: 40px 0;}
            /* ===== 移动端 method-timeline 下 method-item 改为 1行2列 ===== */
            .method-timeline { 
                display: grid !important;
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 24px 16px !important;
                padding: 0 10px;
            }
            .method-timeline::before { display: none; }
            .method-item { 
                width: 100% !important; 
                padding: 16px 8px;
            }
            .method-circle {
                width: 60px !important;
                height: 60px !important;
                font-size: 20px !important;
                margin-bottom: 12px !important;
            }
            .method-item h4 {
                font-size: 15px !important;
            }
            .method-item p {
                font-size: 12px !important;
            }

            .contact-info-grid { grid-template-columns: 1fr; }
            .contact-form-row { grid-template-columns: 1fr; }
            
            /* ===== 移动端 footer-col 下 li 改为 1行2列 ===== */
            .footer-grid { 
                grid-template-columns: 1fr !important; 
                gap: 30px !important;
            }
            .footer-col ul {
                display: grid !important;
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 6px 16px !important;
            }
            .footer-col li {
                margin-bottom: 0 !important;
            }
            .footer-col a {
                font-size: 13px !important;
            }

            .section-title { font-size: 28px; }
            .contact-card { padding: 32px 24px; }
        }
/* ===== PC端：右侧固定 ===== */
@media (min-width: 769px) {
  .float-contact {
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
  }
}

/* ===== 移动端：底部吸底 ===== */
@media (max-width: 768px) {
  .float-contact {
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: row;
    background: #fff;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    padding: 8px 16px;
    gap: 12px;
  }

  .float-btn {
    flex: 1;
    flex-direction: row;
    width: auto;
    padding: 12px 16px;
    border-radius: 6px;
    gap: 6px;
  }

  .float-btn + .float-btn {
    margin-top: 0;
  }

  .float-icon {
    font-size: 18px;
    margin-bottom: 0;
  }

  .float-label {
    font-size: 14px;
  }

  /* 移动端二维码从底部弹出 */
   .wechat-qrcode {
    display: none;
    position: fixed;       /* 改为 fixed，脱离父元素 */
    bottom: 70px;          /* 吸底栏高度约60px + 10px间距 */
    top: auto;
    right: auto;
    transform: translateX(-50%);
    margin-bottom: 0;
    background: #fff;
    border-radius: 10px;
    padding: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    text-align: center;
    z-index: 1001;
  }

  .wechat-qrcode.active {
    display: block;
  }

  .wechat-qrcode img {
    width: 180px;
    height: 180px;
  }
}