/* ===== 全局重置 & 基础 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Quicksand', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            background: linear-gradient(145deg, #f5f0f8 0%, #e8f0f5 100%);
            color: #2d3e4f;
            line-height: 1.7;
            padding: 0 20px;
            min-height: 100vh;
        }

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 20px;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        img {
            max-width: 100%;
            display: block;
        }

        /* ===== 头部 ===== */
        .main-header {
            padding: 18px 0 12px;
            background: rgba(255, 255, 255, 0.72);
            backdrop-filter: blur(14px);
            border-radius: 0 0 32px 32px;
            box-shadow: 0 8px 32px rgba(120, 100, 160, 0.10);
            margin-bottom: 40px;
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 2px solid rgba(180, 160, 210, 0.20);
        }

        .header-flex {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .logo h1 {
            font-size: 28px;
            font-weight: 700;
            background: linear-gradient(135deg, #6f5b8c, #9b7eb5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: 1px;
        }
        .logo h1 a {
            -webkit-text-fill-color: transparent;
        }
        .logo .tagline {
            font-size: 13px;
            color: #8a7a9e;
            font-weight: 400;
            letter-spacing: 2px;
            margin-top: 2px;
        }

        .search-form {
            display: flex;
            background: #fff;
            border-radius: 60px;
            padding: 4px 4px 4px 18px;
            box-shadow: 0 4px 16px rgba(140, 120, 180, 0.12);
            border: 1px solid rgba(180, 160, 210, 0.25);
            transition: 0.3s;
        }
        .search-form:focus-within {
            box-shadow: 0 4px 24px rgba(140, 120, 180, 0.25);
            border-color: #b8a9d0;
        }
        .search-form input {
            border: none;
            background: transparent;
            padding: 10px 0;
            font-size: 14px;
            width: 200px;
            outline: none;
            font-family: inherit;
            color: #2d3e4f;
        }
        .search-form input::placeholder {
            color: #b0a4c0;
        }
        .search-form button {
            background: linear-gradient(135deg, #7ec8c9, #6ab0b8);
            border: none;
            color: #fff;
            width: 44px;
            height: 44px;
            border-radius: 60px;
            cursor: pointer;
            font-size: 18px;
            transition: 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .search-form button:hover {
            transform: scale(1.04);
            background: linear-gradient(135deg, #6ab0b8, #5a9ca5);
        }

        .main-nav ul {
            display: flex;
            gap: 28px;
            list-style: none;
            font-weight: 600;
            font-size: 15px;
        }
        .main-nav ul li a {
            color: #3d4e5f;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: 0.3s;
            letter-spacing: 0.5px;
        }
        .main-nav ul li a:hover {
            border-bottom-color: #9b7eb5;
            color: #6f5b8c;
        }

        /* ===== 通用标题 ===== */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: #3d2e4f;
            margin-bottom: 28px;
            display: flex;
            align-items: center;
            gap: 12px;
            letter-spacing: 1px;
        }
        .section-title i {
            color: #9b7eb5;
            font-size: 26px;
        }
        .section-title .highlight {
            background: linear-gradient(135deg, #7ec8c9, #9b7eb5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* ===== 新增：介绍描述区块 ===== */
        .intro-description {
            background: rgba(255, 255, 255, 0.60);
            backdrop-filter: blur(8px);
            border-radius: 32px;
            padding: 28px 32px;
            margin-bottom: 40px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            box-shadow: 0 8px 28px rgba(120, 100, 160, 0.06);
            text-align: center;
            font-size: 17px;
            font-weight: 400;
            color: #3d4e5f;
            line-height: 1.9;
            letter-spacing: 0.3px;
        }
        .intro-description strong {
            color: #6f5b8c;
            font-weight: 700;
        }
        @media (max-width: 600px) {
            .intro-description {
                padding: 20px 16px;
                font-size: 15px;
            }
        }

        /* ===== 图片画廊 ===== */
        .gallery-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 24px;
            margin-bottom: 48px;
        }

        .gallery-item {
            background: rgba(255, 255, 255, 0.70);
            backdrop-filter: blur(8px);
            border-radius: 28px;
            overflow: hidden;
            box-shadow: 0 8px 28px rgba(120, 100, 160, 0.10);
            transition: 0.4s cubic-bezier(0.2, 0.9, 0.3, 1.1);
            border: 1px solid rgba(255, 255, 255, 0.5);
            position: relative;
        }
        .gallery-item:hover {
            transform: translateY(-8px) scale(1.01);
            box-shadow: 0 18px 48px rgba(120, 100, 160, 0.18);
        }

        .gallery-item .image-link {
            display: block;
            position: relative;
            overflow: hidden;
            aspect-ratio: 1 / 1;
            background: #ddd2e6;
        }
        .gallery-item .image-link img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: 0.6s;
        }
        .gallery-item:hover .image-link img {
            transform: scale(1.06);
        }

        /* 播放图标 */
        .play-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(40, 30, 60, 0.20);
            transition: 0.4s;
            opacity: 0;
        }
        .gallery-item:hover .play-overlay {
            opacity: 1;
        }
        .play-overlay i {
            font-size: 56px;
            color: #fff;
            text-shadow: 0 4px 20px rgba(0, 0, 0, 0.30);
            background: rgba(255, 255, 255, 0.20);
            backdrop-filter: blur(4px);
            width: 80px;
            height: 80px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: 0.3s;
            border: 2px solid rgba(255, 255, 255, 0.50);
        }
        .gallery-item:hover .play-overlay i {
            transform: scale(1.08);
            background: rgba(255, 255, 255, 0.35);
        }

        .gallery-item .image-title {
            padding: 16px 18px 12px;
            font-weight: 700;
            font-size: 16px;
            color: #3d2e4f;
            letter-spacing: 0.5px;
        }
        .gallery-item .image-title a {
            background: linear-gradient(135deg, #6f5b8c, #9b7eb5);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gallery-item .image-desc {
            padding: 0 18px 18px;
            font-size: 13px;
            color: #7a6a8e;
            font-weight: 300;
            line-height: 1.5;
            border-top: 1px solid rgba(180, 160, 210, 0.15);
            padding-top: 12px;
        }
        .gallery-item .image-desc span {
            display: inline-block;
            background: rgba(180, 160, 210, 0.12);
            padding: 0 8px;
            border-radius: 20px;
            font-size: 11px;
            color: #6f5b8c;
            margin: 2px 2px;
        }

        /* ===== 关键词云 ===== */
        .keywords-cloud-wrap {
            background: rgba(255, 255, 255, 0.60);
            backdrop-filter: blur(8px);
            border-radius: 32px;
            padding: 32px 28px;
            margin-bottom: 48px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            box-shadow: 0 8px 28px rgba(120, 100, 160, 0.06);
        }
        .keywords-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px 14px;
            justify-content: center;
        }
        .keywords-cloud a {
            font-size: 14px;
            font-weight: 500;
            color: #4d3e5f;
            padding: 4px 14px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.5);
            transition: 0.25s;
            border: 1px solid rgba(180, 160, 210, 0.15);
            letter-spacing: 0.3px;
            display: inline-block;
        }
        .keywords-cloud a:hover {
            background: linear-gradient(135deg, #7ec8c9, #9b7eb5);
            color: #fff;
            transform: scale(1.05);
            border-color: transparent;
            box-shadow: 0 4px 16px rgba(120, 100, 160, 0.25);
        }
        .keywords-cloud .kw-high {
            font-weight: 700;
            font-size: 18px;
            background: linear-gradient(135deg, #6f5b8c, #b8a9c9);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            border-color: rgba(180, 160, 210, 0.30);
            padding: 4px 18px;
        }
        .keywords-cloud .kw-high:hover {
            -webkit-text-fill-color: #fff;
            background: linear-gradient(135deg, #7ec8c9, #6f5b8c);
        }
        .keywords-cloud .kw-mid {
            font-weight: 600;
            font-size: 16px;
            color: #5d4e6f;
        }
        .keywords-cloud .kw-low {
            font-weight: 400;
            font-size: 13px;
            color: #7a6a8e;
        }

        /* ===== 文章列表 ===== */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
            margin-bottom: 48px;
        }
        .article-card {
            background: rgba(255, 255, 255, 0.70);
            backdrop-filter: blur(8px);
            border-radius: 28px;
            padding: 22px 24px 24px;
            border: 1px solid rgba(255, 255, 255, 0.5);
            box-shadow: 0 6px 24px rgba(120, 100, 160, 0.06);
            transition: 0.35s;
            position: relative;
            overflow: hidden;
        }
        .article-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, #7ec8c9, #9b7eb5, #b8a9c9);
            opacity: 0.5;
        }
        .article-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 14px 40px rgba(120, 100, 160, 0.14);
            background: rgba(255, 255, 255, 0.85);
        }
        .article-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .article-card h3 a {
            color: #3d2e4f;
            transition: 0.3s;
        }
        .article-card h3 a:hover {
            color: #6f5b8c;
        }
        .article-card .article-meta {
            font-size: 13px;
            color: #8a7a9e;
            margin-bottom: 10px;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .article-card .article-meta i {
            margin-right: 4px;
            color: #9b7eb5;
        }
        .article-card .article-excerpt {
            font-size: 14px;
            color: #5d4e6f;
            font-weight: 300;
            line-height: 1.6;
        }
        .article-card .article-excerpt .kw-tag {
            display: inline-block;
            background: rgba(180, 160, 210, 0.12);
            padding: 0 10px;
            border-radius: 20px;
            font-size: 12px;
            color: #6f5b8c;
            margin: 2px 2px;
        }

        /* ===== SEO 内容区 ===== */
        .seo-section {
            background: rgba(255, 255, 255, 0.60);
            backdrop-filter: blur(8px);
            border-radius: 32px;
            padding: 32px 30px;
            margin-bottom: 40px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            box-shadow: 0 8px 28px rgba(120, 100, 160, 0.06);
        }
        .seo-section h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 18px;
            color: #3d2e4f;
            letter-spacing: 1px;
        }
        .seo-section h2 i {
            color: #9b7eb5;
            margin-right: 10px;
        }
        .seo-section p {
            font-size: 15px;
            line-height: 1.9;
            color: #3d4e5f;
            margin-bottom: 14px;
            font-weight: 400;
        }
        .seo-section .seo-links {
            margin-top: 18px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px 16px;
            padding-top: 16px;
            border-top: 1px solid rgba(180, 160, 210, 0.15);
        }
        .seo-section .seo-links a {
            background: rgba(255, 255, 255, 0.5);
            padding: 4px 16px;
            border-radius: 40px;
            font-size: 14px;
            font-weight: 500;
            color: #4d3e5f;
            border: 1px solid rgba(180, 160, 210, 0.15);
            transition: 0.25s;
        }
        .seo-section .seo-links a:hover {
            background: linear-gradient(135deg, #7ec8c9, #9b7eb5);
            color: #fff;
            border-color: transparent;
            transform: scale(1.04);
        }

        /* ===== 页脚 ===== */
        .main-footer {
            background: rgba(255, 255, 255, 0.70);
            backdrop-filter: blur(14px);
            border-radius: 32px 32px 0 0;
            padding: 40px 0 20px;
            margin-top: 20px;
            border-top: 2px solid rgba(180, 160, 210, 0.15);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 28px;
        }
        .footer-grid h3 {
            font-size: 18px;
            font-weight: 700;
            color: #3d2e4f;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-grid p,
        .footer-grid li {
            font-size: 14px;
            color: #5d4e6f;
            font-weight: 300;
            line-height: 1.8;
        }
        .footer-grid ul {
            list-style: none;
        }
        .footer-grid ul li a {
            color: #5d4e6f;
            transition: 0.3s;
            border-bottom: 1px solid transparent;
        }
        .footer-grid ul li a:hover {
            color: #6f5b8c;
            border-bottom-color: #b8a9c9;
        }
        .footer-keywords {
            display: flex;
            flex-wrap: wrap;
            gap: 8px 12px;
        }
        .footer-keywords a {
            font-size: 13px;
            color: #6f5b8c;
            padding: 2px 12px;
            border-radius: 30px;
            background: rgba(180, 160, 210, 0.08);
            border: 1px solid rgba(180, 160, 210, 0.10);
            transition: 0.25s;
        }
        .footer-keywords a:hover {
            background: rgba(180, 160, 210, 0.20);
            transform: translateY(-2px);
        }
        .footer-bottom {
            border-top: 1px solid rgba(180, 160, 210, 0.15);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #7a6a8e;
            font-weight: 300;
            line-height: 1.8;
        }
        .footer-bottom .seo-footer {
            margin-top: 6px;
            font-size: 12px;
            color: #8a7a9e;
            letter-spacing: 0.3px;
        }

        /* ===== 悬浮搜索 ===== */
        .floating-search {
            position: fixed;
            bottom: 30px;
            right: 30px;
            display: flex;
            flex-direction: column;
            align-items: flex-end;
            gap: 12px;
            z-index: 200;
        }
        .float-btn {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #7ec8c9, #6f5b8c);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            box-shadow: 0 8px 28px rgba(120, 100, 160, 0.30);
            transition: 0.35s;
            border: none;
            cursor: pointer;
        }
        .float-btn:hover {
            transform: scale(1.08) rotate(-4deg);
            box-shadow: 0 12px 36px rgba(120, 100, 160, 0.40);
        }
        .float-search {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            border-radius: 60px;
            padding: 6px 6px 6px 18px;
            box-shadow: 0 8px 32px rgba(120, 100, 160, 0.16);
            display: flex;
            align-items: center;
            gap: 4px;
            border: 1px solid rgba(255, 255, 255, 0.6);
            transition: 0.3s;
        }
        .float-search input {
            border: none;
            background: transparent;
            padding: 8px 0;
            font-size: 14px;
            width: 150px;
            outline: none;
            font-family: inherit;
            color: #2d3e4f;
        }
        .float-search input::placeholder {
            color: #b0a4c0;
        }
        .float-search button {
            background: linear-gradient(135deg, #7ec8c9, #6ab0b8);
            border: none;
            color: #fff;
            width: 40px;
            height: 40px;
            border-radius: 60px;
            cursor: pointer;
            font-size: 16px;
            transition: 0.3s;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .float-search button:hover {
            background: linear-gradient(135deg, #6ab0b8, #5a9ca5);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 900px) {
            .header-flex {
                flex-direction: column;
                align-items: stretch;
                gap: 12px;
            }
            .logo {
                text-align: center;
            }
            .search-form {
                max-width: 100%;
            }
            .search-form input {
                width: 100%;
            }
            .main-nav ul {
                justify-content: center;
                flex-wrap: wrap;
                gap: 14px 20px;
            }
            .gallery-grid {
                grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
                gap: 16px;
            }
            .article-grid {
                grid-template-columns: 1fr 1fr;
            }
            .keywords-cloud a {
                font-size: 13px;
                padding: 2px 10px;
            }
            .keywords-cloud .kw-high {
                font-size: 15px;
                padding: 2px 12px;
            }
        }

        @media (max-width: 600px) {
            body {
                padding: 0 10px;
            }
            .container {
                padding: 0 10px;
            }
            .gallery-grid {
                grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
                gap: 12px;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 22px;
            }
            .play-overlay i {
                width: 56px;
                height: 56px;
                font-size: 36px;
            }
            .float-search input {
                width: 100px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .footer-keywords {
                justify-content: center;
            }
            .main-nav ul {
                gap: 10px 14px;
                font-size: 13px;
            }
            .seo-section {
                padding: 20px 16px;
            }
            .keywords-cloud-wrap {
                padding: 20px 14px;
            }
        }

        /* ===== 入场动画 ===== */
        @keyframes fadeUp {
            0% {
                opacity: 0;
                transform: translateY(30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .gallery-item,
        .article-card,
        .keywords-cloud-wrap,
        .seo-section,
        .intro-description {
            animation: fadeUp 0.7s ease both;
        }
        .gallery-item:nth-child(1) {
            animation-delay: 0.05s;
        }
        .gallery-item:nth-child(2) {
            animation-delay: 0.10s;
        }
        .gallery-item:nth-child(3) {
            animation-delay: 0.15s;
        }
        .gallery-item:nth-child(4) {
            animation-delay: 0.20s;
        }
        .gallery-item:nth-child(5) {
            animation-delay: 0.25s;
        }
        .gallery-item:nth-child(6) {
            animation-delay: 0.30s;
        }
        .gallery-item:nth-child(7) {
            animation-delay: 0.35s;
        }
        .gallery-item:nth-child(8) {
            animation-delay: 0.40s;
        }
        .gallery-item:nth-child(9) {
            animation-delay: 0.45s;
        }
        .gallery-item:nth-child(10) {
            animation-delay: 0.50s;
        }
        .keywords-cloud-wrap {
            animation-delay: 0.20s;
        }
        .seo-section {
            animation-delay: 0.30s;
        }
        .intro-description {
            animation-delay: 0.10s;
        }
        .article-card:nth-child(1) {
            animation-delay: 0.10s;
        }
        .article-card:nth-child(2) {
            animation-delay: 0.15s;
        }
        .article-card:nth-child(3) {
            animation-delay: 0.20s;
        }
        .article-card:nth-child(4) {
            animation-delay: 0.25s;
        }
        .article-card:nth-child(5) {
            animation-delay: 0.30s;
        }
        .article-card:nth-child(6) {
            animation-delay: 0.35s;
        }
        .article-card:nth-child(7) {
            animation-delay: 0.40s;
        }
        .article-card:nth-child(8) {
            animation-delay: 0.45s;
        }
        .article-card:nth-child(9) {
            animation-delay: 0.50s;
        }
        .article-card:nth-child(10) {
            animation-delay: 0.55s;
        }

        /* ===== 滚动条 ===== */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #f0ebf5;
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb {
            background: linear-gradient(180deg, #b8a9c9, #9b7eb5);
            border-radius: 10px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #7ec8c9;
        }