* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Noto Sans SC', sans-serif;
        }

        :root {
            --primary-light: #c6873f;
            --primary-color: #764e0d;
            --primary-dark: #422608;
            --secondary-color: #e8b33d;
            --accent-color: #4c9ce6;
            --light-color: #f5f8fc;
            --dark-color: #333;
            --gray-color: #6c757d;
            --transition: all 0.3s ease;
        }

        body {
            background-color: #f0f5fb;
            color: var(--dark-color);
            line-height: 1.6;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ͷ����ʽ */
        header {
            background: linear-gradient(to right, var(--primary-light), var(--primary-dark));
            color: white;
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 4px 12px rgba(12, 58, 107, 0.15);
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .logo-icon {
            font-size: 2.2rem;
            color: var(--secondary-color);
        }

        .logo-text h1 {
            font-size: 1.6rem;
            margin-bottom: 5px;
            font-weight: 700;
        }

        .logo-text p {
            font-size: 0.85rem;
            opacity: 0.9;
        }

        /* ������ʽ */
        nav ul {
            display: flex;
            list-style: none;
        }

        nav ul li {
            margin-left: 20px;
        }

        nav ul li a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            padding: 8px 15px;
            border-radius: 4px;
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }

        nav ul li a:hover {
            background-color: rgba(255, 255, 255, 0.15);
        }

        nav ul li a.active {
            background-color: var(--secondary-color);
            color: var(--primary-dark);
        }

        nav ul li a.active::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 0;
            border-left: 6px solid transparent;
            border-right: 6px solid transparent;
            border-top: 6px solid var(--secondary-color);
        }

        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 1.5rem;
            cursor: pointer;
        }

        /* ������� */
        .banner {
            background: linear-gradient(rgba(244, 237, 210, 0.45), rgba(249, 205, 106, 0.6)), url(images/bg1.png);
            background-size: cover;
            background-position: center;
            color: #885b2f;
            padding: 80px 0;
            text-align: center;
            margin-bottom: 40px;
        }

        .banner h2 {
            font-size: 2.8rem;
            margin-bottom: 15px;
            text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
            font-weight: 700;
        }

        .banner p {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 25px;
            opacity: 0.95;
        }

        .banner-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 30px;
        }

        .btn {
            padding: 12px 28px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            transition: var(--transition);
            cursor: pointer;
            border: none;
            font-size: 0.95rem;
        }

        .btn-primary {
            background-color: var(--secondary-color);
            color: var(--primary-dark);
        }

        .btn-primary:hover {
            background-color: #f0b52e;
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(232, 179, 61, 0.3);
        }

        .btn-secondary {
            background-color: transparent;
            color: white;
            border: 2px solid white;
        }

        .btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* ��Ҫ�������� */
        main {
            padding-bottom: 60px;
        }

        .section {
            background-color: white;
            border-radius: 8px;
            padding: 35px;
            margin-bottom: 35px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            border-left: 4px solid var(--primary-color);
        }

        .section:hover {
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
        }

        .section-header {
            display: flex;
            align-items: center;
            margin-bottom: 25px;
            padding-bottom: 15px;
            border-bottom: 2px solid var(--secondary-color);
        }

        .section-icon {
            background-color: var(--primary-color);
            color: white;
            width: 45px;
            height: 45px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-right: 15px;
        }

        .section-title {
            font-size: 1.6rem;
            color: var(--primary-dark);
            font-weight: 600;
        }

        /* ���鱳�� */
        .conference-background {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .background-image {
            flex: 1;
            border-radius: 6px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .background-image img {
            width: 100%;
            height: auto;
            display: block;
            transition: transform 0.5s ease;
        }

        .background-image:hover img {
            transform: scale(1.03);
        }

        .background-content {
            flex: 1;
        }

        .background-content h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--primary-dark);
        }

        .background-content p {
            margin-bottom: 15px;
        }

        /* ������Ϣ */
        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
            gap: 20px;
        }

        .info-card {
            background-color: var(--light-color);
            border-radius: 6px;
            padding: 22px;
            border-top: 4px solid var(--primary-color);
            transition: var(--transition);
        }

        .info-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
        }

        .info-card i {
            font-size: 1.6rem;
            color: var(--primary-color);
            margin-bottom: 15px;
        }

        .info-card h3 {
            font-size: 1.2rem;
            margin-bottom: 10px;
            color: var(--primary-dark);
        }

        /* �����ճ� */
        .schedule-tabs {
            display: flex;
            gap: 5px;
            margin-bottom: 25px;
            flex-wrap: wrap;
        }

        .tab-btn {
            padding: 10px 22px;
            background-color: var(--light-color);
            border: none;
            border-radius: 4px;
            font-weight: 600;
            color: var(--dark-color);
            cursor: pointer;
            transition: var(--transition);
        }

        .tab-btn.active {
            background-color: var(--primary-color);
            color: white;
        }

        .tab-btn:hover:not(.active) {
            background-color: #e3ecf7;
        }

        .tab-content {
            display: none;
        }

        .tab-content.active {
            display: block;
        }

        .schedule-item {
            display: flex;
            padding: 18px;
            border-bottom: 1px solid #eee;
            transition: var(--transition);

        }





        .schedule-item:hover {
            background-color: #f9fbfe;
        }

        .schedule-time {
            min-width: 140px;
            font-weight: 600;
            color: var(--primary-color);
        }

        .schedule-content h4 {
            color: var(--primary-dark);
            margin-bottom: 8px;
            font-size: 1.1rem;
        }

        .schedule-content p a {
            text-decoration: none;
        }

        .schedule-content .speaker {
            color: var(--primary-color);
            font-weight: 500;
        }

        /* ��֯���� */
        .organization-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
        }

        .org-category {
            background-color: var(--light-color);
            border-radius: 6px;
            padding: 22px;
        }

        .org-category h3 {
            color: var(--primary-dark);
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid #ddd;
            font-size: 1.3rem;
        }

        .org-list {
            list-style-type: none;
        }

        .org-list li {
            padding: 9px 0;
            border-bottom: 1px dashed #ddd;
            display: flex;
            align-items: center;
        }

        .org-list li:last-child {
            border-bottom: none;
        }

        .org-list li i {
            color: var(--primary-color);
            margin-right: 10px;
            font-size: 0.9rem;
        }

        /* ������ϵ */
        .contact-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 25px;
        }

        .contact-card {
            text-align: center;
            padding: 28px;
            border-radius: 6px;
            background-color: var(--light-color);
            transition: var(--transition);
        }

        .contact-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
        }

        .contact-icon {
            width: 65px;
            height: 65px;
            background: linear-gradient(135deg, var(--primary-light), var(--primary-dark));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 18px;
            font-size: 1.6rem;
            color: white;
            box-shadow: 0 5px 15px rgba(44, 128, 213, 0.2);
        }

        .contact-card h3 {
            color: var(--primary-dark);
            margin-bottom: 10px;
            font-size: 1.2rem;
        }

        /* ���鱨�� */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
            gap: 25px;
        }

        .news-card {
            border-radius: 6px;
            overflow: hidden;
            background-color: white;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
            border: 1px solid #eaeaea;
        }

        .news-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }

        .news-image {
            height: 180px;
            overflow: hidden;
        }

        .news-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .news-card:hover .news-image img {
            transform: scale(1.05);
        }

        .news-content {
            padding: 22px;
        }

        .news-date {
            color: var(--gray-color);
            font-size: 0.85rem;
            margin-bottom: 10px;
        }

        .news-content h3 {
            color: var(--primary-dark);
            margin-bottom: 12px;
            font-size: 1.2rem;
        }

        .news-content p {
            color: var(--gray-color);
            margin-bottom: 18px;
            font-size: 0.95rem;
        }

        .news-link {
            color: var(--primary-color);
            font-weight: 600;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.95rem;
        }

        /* ���鱨�� */
        .registration-form {
            max-width: 800px;
            margin: 0 auto;
        }

        .form-group {
            margin-bottom: 22px;
        }

        .form-row {
            display: flex;
            gap: 20px;
            margin-bottom: 22px;
        }

        .form-row .form-group {
            flex: 1;
            margin-bottom: 0;
        }

        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: var(--primary-dark);
        }

        input,
        select,
        textarea {
            width: 100%;
            padding: 12px 15px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        input:focus,
        select:focus,
        textarea:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(44, 128, 213, 0.1);
        }

        .checkbox-group {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
            margin-top: 10px;
        }

        .checkbox-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .form-note {
            color: var(--gray-color);
            font-size: 0.9rem;
            margin-top: 5px;
        }

        .submit-btn {
            background-color: var(--primary-color);
            color: white;
            padding: 14px 30px;
            border: none;
            border-radius: 4px;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            display: block;
            width: 100%;
            margin-top: 10px;
        }

        .submit-btn:hover {
            background-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(12, 58, 107, 0.2);
        }

        /* ҳ�� */
        footer {
            background: linear-gradient(to right, var(--primary-dark), #082a4d);
            color: white;
            padding: 45px 0 20px;
        }

        .footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 35px;
            margin-bottom: 35px;
        }

        .footer-section {
            flex: 1;
            min-width: 230px;
        }

        .footer-section h3 {
            color: var(--secondary-color);
            margin-bottom: 18px;
            font-size: 1.2rem;
        }

        .footer-links {
            list-style-type: none;
        }

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

        .footer-links a {
            color: #ddd;
            text-decoration: none;
            transition: var(--transition);
            font-size: 0.95rem;
        }

        .footer-links a:hover {
            color: var(--secondary-color);
            padding-left: 5px;
        }

        .social-icons {
            display: flex;
            gap: 12px;
            margin-top: 18px;
        }

        .social-icons a {
            width: 38px;
            height: 38px;
            background-color: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            transition: var(--transition);
        }

        .social-icons a:hover {
            background-color: var(--secondary-color);
            transform: translateY(-3px);
        }

        .copyright {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #aaa;
            font-size: 0.85rem;
        }

        /* ��Ӧʽ��� */
        @media (max-width: 992px) {
            .conference-background {
                flex-direction: column;
            }

            .background-image,
            .background-content {
                width: 100%;
            }

            .banner h2 {
                font-size: 2.3rem;
            }
        }

        @media (max-width: 768px) {
            .header-content {
                flex-direction: column;
                gap: 18px;
            }

            nav ul {
                flex-wrap: wrap;
                justify-content: center;
            }

            nav ul li {
                margin: 5px 8px;
            }

            .banner h2 {
                font-size: 2rem;
            }

            .banner p {
                font-size: 1.1rem;
            }

            .section {
                padding: 25px 20px;
            }

            .banner-buttons {
                flex-direction: column;
                align-items: center;
            }

            .mobile-menu-btn {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
            }

            nav {
                width: 100%;
                display: none;
            }

            nav.active {
                display: block;
                margin-top: 18px;
            }

            nav ul {
                flex-direction: column;
                gap: 8px;
            }

            nav ul li {
                margin: 0;
            }

            nav ul li a {
                display: block;
                padding: 12px;
                text-align: center;
                border-radius: 4px;
            }

            .form-row {
                flex-direction: column;
                gap: 0;
            }
        }

        @media (max-width: 576px) {
            .section-title {
                font-size: 1.4rem;
            }

            .info-grid,
            .organization-grid,
            .contact-grid,
            .news-grid {
                grid-template-columns: 1fr;
            }

            .tab-btn {
                padding: 8px 15px;
                font-size: 0.9rem;
                flex: 1;
                min-width: 120px;
            }

            .schedule-item {
                flex-direction: column;
                gap: 8px;
            }

            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }

            .section-icon {
                margin-right: 0;
            }
        }

        /* ��ҵ��ɫװ�� */
        .cotton-decoration {
            position: absolute;
            opacity: 0.03;
            font-size: 10rem;
            color: var(--primary-color);
            z-index: -1;
        }

        .cotton-icon {
            color: var(--primary-color);
        }

        /* ͳ������ */
        .stats-container {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 20px;
            margin-top: 30px;
            padding: 25px;
            background-color: var(--light-color);
            border-radius: 8px;
            border-left: 4px solid var(--secondary-color);
        }

        .stat-item {
            text-align: center;
            flex: 1;
            min-width: 150px;
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 700;
            color: var(--primary-color);
            margin-bottom: 5px;
        }

        .stat-label {
            color: var(--primary-dark);
            font-weight: 500;
        }